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android / platform / external / chromium_org / 1e9bf3e / . / content / browser / renderer_host / render_widget_host_view_win.cc
blob: 97ec948cf275a63038860c905070e1d750ff1d31 [file] [log] [blame]
// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "content/browser/renderer_host/render_widget_host_view_win.h"
#include <InputScope.h>
#include <wtsapi32.h>
#pragma comment(lib, "wtsapi32.lib")
#include <algorithm>
#include <map>
#include <stack>
#include "base/basictypes.h"
#include "base/bind.h"
#include "base/callback_helpers.h"
#include "base/command_line.h"
#include "base/debug/trace_event.h"
#include "base/i18n/rtl.h"
#include "base/metrics/histogram.h"
#include "base/threading/thread.h"
#include "base/win/metro.h"
#include "base/win/scoped_comptr.h"
#include "base/win/scoped_gdi_object.h"
#include "base/win/win_util.h"
#include "base/win/windows_version.h"
#include "base/win/wrapped_window_proc.h"
#include "content/browser/accessibility/browser_accessibility_manager_win.h"
#include "content/browser/accessibility/browser_accessibility_state_impl.h"
#include "content/browser/accessibility/browser_accessibility_win.h"
#include "content/browser/gpu/gpu_data_manager_impl.h"
#include "content/browser/gpu/gpu_process_host.h"
#include "content/browser/gpu/gpu_process_host_ui_shim.h"
#include "content/browser/renderer_host/backing_store.h"
#include "content/browser/renderer_host/backing_store_win.h"
#include "content/browser/renderer_host/input/web_input_event_builders_win.h"
#include "content/browser/renderer_host/render_process_host_impl.h"
#include "content/browser/renderer_host/render_widget_host_impl.h"
#include "content/browser/renderer_host/ui_events_helper.h"
#include "content/common/accessibility_messages.h"
#include "content/common/gpu/gpu_messages.h"
#include "content/common/plugin_constants_win.h"
#include "content/common/view_messages.h"
#include "content/common/webplugin_geometry.h"
#include "content/public/browser/browser_thread.h"
#include "content/public/browser/child_process_data.h"
#include "content/public/browser/content_browser_client.h"
#include "content/public/browser/native_web_keyboard_event.h"
#include "content/public/browser/notification_service.h"
#include "content/public/browser/notification_types.h"
#include "content/public/browser/render_view_host.h"
#include "content/public/common/content_switches.h"
#include "content/public/common/page_zoom.h"
#include "content/public/common/process_type.h"
#include "skia/ext/skia_utils_win.h"
#include "third_party/WebKit/public/web/WebCompositionUnderline.h"
#include "third_party/WebKit/public/web/WebInputEvent.h"
#include "third_party/skia/include/core/SkRegion.h"
#include "ui/base/ime/composition_text.h"
#include "ui/base/ime/win/imm32_manager.h"
#include "ui/base/ime/win/tsf_input_scope.h"
#include "ui/base/l10n/l10n_util_win.h"
#include "ui/base/touch/touch_device.h"
#include "ui/base/touch/touch_enabled.h"
#include "ui/base/ui_base_switches.h"
#include "ui/base/view_prop.h"
#include "ui/base/win/mouse_wheel_util.h"
#include "ui/base/win/touch_input.h"
#include "ui/events/event.h"
#include "ui/events/event_utils.h"
#include "ui/gfx/canvas.h"
#include "ui/gfx/rect.h"
#include "ui/gfx/rect_conversions.h"
#include "ui/gfx/screen.h"
#include "ui/gfx/sequential_id_generator.h"
#include "ui/gfx/text_elider.h"
#include "ui/gfx/win/dpi.h"
#include "ui/gfx/win/hwnd_util.h"
#include "webkit/common/cursors/webcursor.h"
#include "win8/util/win8_util.h"
using base::TimeDelta;
using base::TimeTicks;
using ui::ViewProp;
using WebKit::WebInputEvent;
using WebKit::WebMouseEvent;
using WebKit::WebTextDirection;
namespace content {
namespace {
// Tooltips will wrap after this width. Yes, wrap. Imagine that!
const int kTooltipMaxWidthPixels = 300;
// Maximum number of characters we allow in a tooltip.
const int kMaxTooltipLength = 1024;
// A custom MSAA object id used to determine if a screen reader is actively
// listening for MSAA events.
const int kIdCustom = 1;
// The delay before the compositor host window is destroyed. This gives the GPU
// process a grace period to stop referencing it.
const int kDestroyCompositorHostWindowDelay = 10000;
// In mouse lock mode, we need to prevent the (invisible) cursor from hitting
// the border of the view, in order to get valid movement information. However,
// forcing the cursor back to the center of the view after each mouse move
// doesn't work well. It reduces the frequency of useful WM_MOUSEMOVE messages
// significantly. Therefore, we move the cursor to the center of the view only
// if it approaches the border. |kMouseLockBorderPercentage| specifies the width
// of the border area, in percentage of the corresponding dimension.
const int kMouseLockBorderPercentage = 15;
// A callback function for EnumThreadWindows to enumerate and dismiss
// any owned popup windows.
BOOL CALLBACK DismissOwnedPopups(HWND window, LPARAM arg) {
const HWND toplevel_hwnd = reinterpret_cast<HWND>(arg);
if (::IsWindowVisible(window)) {
const HWND owner = ::GetWindow(window, GW_OWNER);
if (toplevel_hwnd == owner) {
::PostMessage(window, WM_CANCELMODE, 0, 0);
}
}
return TRUE;
}
void SendToGpuProcessHost(int gpu_host_id, scoped_ptr<IPC::Message> message) {
GpuProcessHost* gpu_process_host = GpuProcessHost::FromID(gpu_host_id);
if (!gpu_process_host)
return;
gpu_process_host->Send(message.release());
}
void PostTaskOnIOThread(const tracked_objects::Location& from_here,
base::Closure task) {
BrowserThread::PostTask(BrowserThread::IO, from_here, task);
}
bool DecodeZoomGesture(HWND hwnd, const GESTUREINFO& gi,
PageZoom* zoom, POINT* zoom_center) {
static long start = 0;
static POINT zoom_first;
if (gi.dwFlags == GF_BEGIN) {
start = gi.ullArguments;
zoom_first.x = gi.ptsLocation.x;
zoom_first.y = gi.ptsLocation.y;
ScreenToClient(hwnd, &zoom_first);
return false;
}
if (gi.dwFlags == GF_END)
return false;
POINT zoom_second = {0};
zoom_second.x = gi.ptsLocation.x;
zoom_second.y = gi.ptsLocation.y;
ScreenToClient(hwnd, &zoom_second);
if (zoom_first.x == zoom_second.x && zoom_first.y == zoom_second.y)
return false;
zoom_center->x = (zoom_first.x + zoom_second.x) / 2;
zoom_center->y = (zoom_first.y + zoom_second.y) / 2;
double zoom_factor =
static_cast<double>(gi.ullArguments)/static_cast<double>(start);
*zoom = zoom_factor >= 1 ? PAGE_ZOOM_IN : PAGE_ZOOM_OUT;
start = gi.ullArguments;
zoom_first = zoom_second;
return true;
}
bool DecodeScrollGesture(const GESTUREINFO& gi,
POINT* start,
POINT* delta){
// Windows gestures are streams of messages with begin/end messages that
// separate each new gesture. We key off the begin message to reset
// the static variables.
static POINT last_pt;
static POINT start_pt;
if (gi.dwFlags == GF_BEGIN) {
delta->x = 0;
delta->y = 0;
start_pt.x = gi.ptsLocation.x;
start_pt.y = gi.ptsLocation.y;
} else {
delta->x = gi.ptsLocation.x - last_pt.x;
delta->y = gi.ptsLocation.y - last_pt.y;
}
last_pt.x = gi.ptsLocation.x;
last_pt.y = gi.ptsLocation.y;
*start = start_pt;
return true;
}
WebKit::WebMouseWheelEvent MakeFakeScrollWheelEvent(HWND hwnd,
POINT start,
POINT delta) {
WebKit::WebMouseWheelEvent result;
result.type = WebInputEvent::MouseWheel;
result.timeStampSeconds = ::GetMessageTime() / 1000.0;
result.button = WebMouseEvent::ButtonNone;
result.globalX = start.x;
result.globalY = start.y;
// Map to window coordinates.
POINT client_point = { result.globalX, result.globalY };
MapWindowPoints(0, hwnd, &client_point, 1);
result.x = client_point.x;
result.y = client_point.y;
result.windowX = result.x;
result.windowY = result.y;
// Note that we support diagonal scrolling.
result.deltaX = static_cast<float>(delta.x);
result.wheelTicksX = WHEEL_DELTA;
result.deltaY = static_cast<float>(delta.y);
result.wheelTicksY = WHEEL_DELTA;
return result;
}
static const int kTouchMask = 0x7;
inline int GetTouchType(const TOUCHINPUT& point) {
return point.dwFlags & kTouchMask;
}
inline void SetTouchType(TOUCHINPUT* point, int type) {
point->dwFlags = (point->dwFlags & kTouchMask) | type;
}
ui::EventType ConvertToUIEvent(WebKit::WebTouchPoint::State t) {
switch (t) {
case WebKit::WebTouchPoint::StatePressed:
return ui::ET_TOUCH_PRESSED;
case WebKit::WebTouchPoint::StateMoved:
return ui::ET_TOUCH_MOVED;
case WebKit::WebTouchPoint::StateStationary:
return ui::ET_TOUCH_STATIONARY;
case WebKit::WebTouchPoint::StateReleased:
return ui::ET_TOUCH_RELEASED;
case WebKit::WebTouchPoint::StateCancelled:
return ui::ET_TOUCH_CANCELLED;
default:
DCHECK(false) << "Unexpected ui type. " << t;
return ui::ET_UNKNOWN;
}
}
// Creates a WebGestureEvent corresponding to the given |gesture|
WebKit::WebGestureEvent CreateWebGestureEvent(HWND hwnd,
const ui::GestureEvent& gesture) {
WebKit::WebGestureEvent gesture_event =
MakeWebGestureEventFromUIEvent(gesture);
POINT client_point = gesture.location().ToPOINT();
POINT screen_point = gesture.location().ToPOINT();
MapWindowPoints(hwnd, HWND_DESKTOP, &screen_point, 1);
gesture_event.x = client_point.x;
gesture_event.y = client_point.y;
gesture_event.globalX = screen_point.x;
gesture_event.globalY = screen_point.y;
return gesture_event;
}
WebKit::WebGestureEvent CreateFlingCancelEvent(double time_stamp) {
WebKit::WebGestureEvent gesture_event;
gesture_event.timeStampSeconds = time_stamp;
gesture_event.type = WebKit::WebGestureEvent::GestureFlingCancel;
gesture_event.sourceDevice = WebKit::WebGestureEvent::Touchscreen;
return gesture_event;
}
class TouchEventFromWebTouchPoint : public ui::TouchEvent {
public:
TouchEventFromWebTouchPoint(const WebKit::WebTouchPoint& touch_point,
base::TimeDelta& timestamp)
: ui::TouchEvent(ConvertToUIEvent(touch_point.state),
touch_point.position,
touch_point.id,
timestamp) {
set_radius(touch_point.radiusX, touch_point.radiusY);
set_rotation_angle(touch_point.rotationAngle);
set_force(touch_point.force);
set_flags(ui::GetModifiersFromKeyState());
}
virtual ~TouchEventFromWebTouchPoint() {}
private:
DISALLOW_COPY_AND_ASSIGN(TouchEventFromWebTouchPoint);
};
bool ShouldSendPinchGesture() {
static bool pinch_allowed =
CommandLine::ForCurrentProcess()->HasSwitch(switches::kEnablePinch);
return pinch_allowed;
}
void GetScreenInfoForWindow(gfx::NativeViewId id,
WebKit::WebScreenInfo* results) {
HWND window = gfx::NativeViewFromId(id);
HMONITOR monitor = MonitorFromWindow(window, MONITOR_DEFAULTTOPRIMARY);
MONITORINFOEX monitor_info;
monitor_info.cbSize = sizeof(MONITORINFOEX);
if (!base::win::GetMonitorInfoWrapper(monitor, &monitor_info))
return;
DEVMODE dev_mode;
dev_mode.dmSize = sizeof(dev_mode);
dev_mode.dmDriverExtra = 0;
EnumDisplaySettings(monitor_info.szDevice, ENUM_CURRENT_SETTINGS, &dev_mode);
WebKit::WebScreenInfo screen_info;
screen_info.depth = dev_mode.dmBitsPerPel;
screen_info.depthPerComponent = 8;
screen_info.deviceScaleFactor = gfx::win::GetDeviceScaleFactor();
screen_info.isMonochrome = dev_mode.dmColor == DMCOLOR_MONOCHROME;
screen_info.rect = gfx::Rect(monitor_info.rcMonitor);
screen_info.availableRect = gfx::Rect(monitor_info.rcWork);
*results = screen_info;
}
} // namespace
const wchar_t kRenderWidgetHostHWNDClass[] = L"Chrome_RenderWidgetHostHWND";
// Wrapper for maintaining touchstate associated with a WebTouchEvent.
class WebTouchState {
public:
explicit WebTouchState(const RenderWidgetHostViewWin* window);
// Updates the current touchpoint state with the supplied touches.
// Touches will be consumed only if they are of the same type (e.g. down,
// up, move). Returns the number of consumed touches.
size_t UpdateTouchPoints(TOUCHINPUT* points, size_t count);
// Marks all active touchpoints as released.
bool ReleaseTouchPoints();
// The contained WebTouchEvent.
const WebKit::WebTouchEvent& touch_event() { return touch_event_; }
// Returns if any touches are modified in the event.
bool is_changed() { return touch_event_.changedTouchesLength != 0; }
private:
// Adds a touch point or returns NULL if there's not enough space.
WebKit::WebTouchPoint* AddTouchPoint(TOUCHINPUT* touch_input);
// Copy details from a TOUCHINPUT to an existing WebTouchPoint, returning
// true if the resulting point is a stationary move.
bool UpdateTouchPoint(WebKit::WebTouchPoint* touch_point,
TOUCHINPUT* touch_input);
// Find (or create) a mapping for _os_touch_id_.
unsigned int GetMappedTouch(unsigned int os_touch_id);
// Remove any mappings that are no longer in use.
void RemoveExpiredMappings();
WebKit::WebTouchEvent touch_event_;
const RenderWidgetHostViewWin* const window_;
ui::SequentialIDGenerator id_generator_;
DISALLOW_COPY_AND_ASSIGN(WebTouchState);
};
typedef void (*MetroSetFrameWindow)(HWND window);
typedef void (*MetroCloseFrameWindow)(HWND window);
///////////////////////////////////////////////////////////////////////////////
// RenderWidgetHostViewWin, public:
RenderWidgetHostViewWin::RenderWidgetHostViewWin(RenderWidgetHost* widget)
: render_widget_host_(RenderWidgetHostImpl::From(widget)),
compositor_host_window_(NULL),
hide_compositor_window_at_next_paint_(false),
track_mouse_leave_(false),
imm32_manager_(new ui::IMM32Manager),
ime_notification_(false),
capture_enter_key_(false),
about_to_validate_and_paint_(false),
close_on_deactivate_(false),
being_destroyed_(false),
tooltip_hwnd_(NULL),
tooltip_showing_(false),
weak_factory_(this),
is_loading_(false),
text_input_type_(ui::TEXT_INPUT_TYPE_NONE),
text_input_mode_(ui::TEXT_INPUT_MODE_DEFAULT),
can_compose_inline_(true),
is_fullscreen_(false),
ignore_mouse_movement_(true),
composition_range_(gfx::Range::InvalidRange()),
touch_state_(new WebTouchState(this)),
pointer_down_context_(false),
last_touch_location_(-1, -1),
touch_events_enabled_(ui::AreTouchEventsEnabled()),
gesture_recognizer_(ui::GestureRecognizer::Create()) {
render_widget_host_->SetView(this);
registrar_.Add(this,
NOTIFICATION_RENDERER_PROCESS_TERMINATED,
NotificationService::AllBrowserContextsAndSources());
gesture_recognizer_->AddGestureEventHelper(this);
}
RenderWidgetHostViewWin::~RenderWidgetHostViewWin() {
gesture_recognizer_->RemoveGestureEventHelper(this);
UnlockMouse();
ResetTooltip();
}
void RenderWidgetHostViewWin::CreateWnd(HWND parent) {
// ATL function to create the window.
Create(parent);
}
///////////////////////////////////////////////////////////////////////////////
// RenderWidgetHostViewWin, RenderWidgetHostView implementation:
void RenderWidgetHostViewWin::InitAsChild(
gfx::NativeView parent_view) {
CreateWnd(parent_view);
}
void RenderWidgetHostViewWin::InitAsPopup(
RenderWidgetHostView* parent_host_view, const gfx::Rect& pos) {
close_on_deactivate_ = true;
DoPopupOrFullscreenInit(parent_host_view->GetNativeView(), pos,
WS_EX_TOOLWINDOW);
}
void RenderWidgetHostViewWin::InitAsFullscreen(
RenderWidgetHostView* reference_host_view) {
gfx::Rect pos = gfx::Screen::GetNativeScreen()->GetDisplayNearestWindow(
reference_host_view->GetNativeView()).bounds();
is_fullscreen_ = true;
DoPopupOrFullscreenInit(gfx::GetWindowToParentTo(true), pos, 0);
}
RenderWidgetHost* RenderWidgetHostViewWin::GetRenderWidgetHost() const {
return render_widget_host_;
}
void RenderWidgetHostViewWin::WasShown() {
// |render_widget_host_| may be NULL if the WebContentsImpl is in the process
// of closing.
if (!render_widget_host_)
return;
if (!render_widget_host_->is_hidden())
return;
if (web_contents_switch_paint_time_.is_null())
web_contents_switch_paint_time_ = TimeTicks::Now();
render_widget_host_->WasShown();
}
void RenderWidgetHostViewWin::WasHidden() {
// |render_widget_host_| may be NULL if the WebContentsImpl is in the process
// of closing.
if (!render_widget_host_)
return;
if (render_widget_host_->is_hidden())
return;
ResetTooltip();
// Inform the renderer that we are being hidden so it can reduce its resource
// utilization.
render_widget_host_->WasHidden();
if (accelerated_surface_)
accelerated_surface_->WasHidden();
if (GetBrowserAccessibilityManager())
GetBrowserAccessibilityManager()->WasHidden();
web_contents_switch_paint_time_ = base::TimeTicks();
}
void RenderWidgetHostViewWin::SetSize(const gfx::Size& size) {
SetBounds(gfx::Rect(GetPixelBounds().origin(), size));
}
void RenderWidgetHostViewWin::SetBounds(const gfx::Rect& rect) {
if (being_destroyed_)
return;
// No SWP_NOREDRAW as autofill popups can move and the underneath window
// should redraw in that case.
UINT swp_flags = SWP_NOSENDCHANGING | SWP_NOOWNERZORDER | SWP_NOCOPYBITS |
SWP_NOZORDER | SWP_NOACTIVATE | SWP_DEFERERASE;
// If the style is not popup, you have to convert the point to client
// coordinate.
POINT point = { rect.x(), rect.y() };
if (GetStyle() & WS_CHILD)
ScreenToClient(&point);
SetWindowPos(NULL, point.x, point.y, rect.width(), rect.height(), swp_flags);
render_widget_host_->WasResized();
}
gfx::NativeView RenderWidgetHostViewWin::GetNativeView() const {
return m_hWnd;
}
gfx::NativeViewId RenderWidgetHostViewWin::GetNativeViewId() const {
return reinterpret_cast<gfx::NativeViewId>(m_hWnd);
}
gfx::NativeViewAccessible
RenderWidgetHostViewWin::GetNativeViewAccessible() {
if (render_widget_host_ &&
!BrowserAccessibilityState::GetInstance()->IsAccessibleBrowser()) {
// Attempt to detect screen readers by sending an event with our custom id.
NotifyWinEvent(EVENT_SYSTEM_ALERT, m_hWnd, kIdCustom, CHILDID_SELF);
}
CreateBrowserAccessibilityManagerIfNeeded();
return GetBrowserAccessibilityManager()->GetRoot()->
ToBrowserAccessibilityWin();
}
void RenderWidgetHostViewWin::CreateBrowserAccessibilityManagerIfNeeded() {
if (GetBrowserAccessibilityManager())
return;
HRESULT hr = ::CreateStdAccessibleObject(
m_hWnd, OBJID_WINDOW, IID_IAccessible,
reinterpret_cast<void **>(&window_iaccessible_));
DCHECK(SUCCEEDED(hr));
SetBrowserAccessibilityManager(
new BrowserAccessibilityManagerWin(
m_hWnd,
window_iaccessible_.get(),
BrowserAccessibilityManagerWin::GetEmptyDocument(),
this));
}
void RenderWidgetHostViewWin::MovePluginWindows(
const gfx::Vector2d& scroll_offset,
const std::vector<WebPluginGeometry>& plugin_window_moves) {
MovePluginWindowsHelper(m_hWnd, plugin_window_moves);
}
static BOOL CALLBACK AddChildWindowToVector(HWND hwnd, LPARAM lparam) {
std::vector<HWND>* vector = reinterpret_cast<std::vector<HWND>*>(lparam);
vector->push_back(hwnd);
return TRUE;
}
void RenderWidgetHostViewWin::CleanupCompositorWindow() {
if (!compositor_host_window_)
return;
gfx::SetWindowUserData(compositor_host_window_, NULL);
// Hide the compositor and parent it to the desktop rather than destroying
// it immediately. The GPU process has a grace period to stop accessing the
// window. TODO(apatrick): the GPU process should acknowledge that it has
// finished with the window handle and the browser process should destroy it
// at that point.
::ShowWindow(compositor_host_window_, SW_HIDE);
::SetParent(compositor_host_window_, NULL);
BrowserThread::PostDelayedTask(
BrowserThread::UI,
FROM_HERE,
base::Bind(base::IgnoreResult(&::DestroyWindow),
compositor_host_window_),
base::TimeDelta::FromMilliseconds(kDestroyCompositorHostWindowDelay));
compositor_host_window_ = NULL;
}
bool RenderWidgetHostViewWin::IsActivatable() const {
// Popups should not be activated.
return popup_type_ == WebKit::WebPopupTypeNone;
}
void RenderWidgetHostViewWin::Focus() {
if (IsWindow())
SetFocus();
}
void RenderWidgetHostViewWin::Blur() {
NOTREACHED();
}
bool RenderWidgetHostViewWin::HasFocus() const {
return ::GetFocus() == m_hWnd;
}
bool RenderWidgetHostViewWin::IsSurfaceAvailableForCopy() const {
if (render_widget_host_->is_accelerated_compositing_active())
return accelerated_surface_.get() && accelerated_surface_->IsReadyForCopy();
else
return !!render_widget_host_->GetBackingStore(false);
}
void RenderWidgetHostViewWin::Show() {
ShowWindow(SW_SHOW);
WasShown();
}
void RenderWidgetHostViewWin::Hide() {
if (!is_fullscreen_ && GetParent() == gfx::GetWindowToParentTo(true)) {
LOG(WARNING) << "Hide() called twice in a row: " << this << ":"
<< GetParent();
return;
}
if (::GetFocus() == m_hWnd)
::SetFocus(NULL);
ShowWindow(SW_HIDE);
WasHidden();
}
bool RenderWidgetHostViewWin::IsShowing() {
return !!IsWindowVisible();
}
gfx::Rect RenderWidgetHostViewWin::GetViewBounds() const {
return gfx::win::ScreenToDIPRect(GetPixelBounds());
}
gfx::Rect RenderWidgetHostViewWin::GetPixelBounds() const {
CRect window_rect;
GetWindowRect(&window_rect);
return gfx::Rect(window_rect);
}
void RenderWidgetHostViewWin::UpdateCursor(const WebCursor& cursor) {
current_cursor_ = cursor;
UpdateCursorIfOverSelf();
}
void RenderWidgetHostViewWin::UpdateCursorIfOverSelf() {
static HCURSOR kCursorArrow = LoadCursor(NULL, IDC_ARROW);
static HCURSOR kCursorAppStarting = LoadCursor(NULL, IDC_APPSTARTING);
static HINSTANCE module_handle = GetModuleHandle(
GetContentClient()->browser()->GetResourceDllName());
// If the mouse is over our HWND, then update the cursor state immediately.
CPoint pt;
GetCursorPos(&pt);
if (WindowFromPoint(pt) == m_hWnd) {
// We cannot pass in NULL as the module handle as this would only work for
// standard win32 cursors. We can also receive cursor types which are
// defined as webkit resources. We need to specify the module handle of
// chrome.dll while loading these cursors.
HCURSOR display_cursor = current_cursor_.GetCursor(module_handle);
// If a page is in the loading state, we want to show the Arrow+Hourglass
// cursor only when the current cursor is the ARROW cursor. In all other
// cases we should continue to display the current cursor.
if (is_loading_ && display_cursor == kCursorArrow)
display_cursor = kCursorAppStarting;
SetCursor(display_cursor);
}
}
void RenderWidgetHostViewWin::SetIsLoading(bool is_loading) {
is_loading_ = is_loading;
UpdateCursorIfOverSelf();
}
void RenderWidgetHostViewWin::TextInputTypeChanged(
ui::TextInputType type,
ui::TextInputMode input_mode,
bool can_compose_inline) {
if (text_input_type_ != type ||
text_input_mode_ != input_mode ||
can_compose_inline_ != can_compose_inline) {
const bool text_input_type_changed = (text_input_type_ != type) ||
(text_input_mode_ != input_mode);
text_input_type_ = type;
text_input_mode_ = input_mode;
can_compose_inline_ = can_compose_inline;
UpdateIMEState();
if (text_input_type_changed)
UpdateInputScopeIfNecessary(text_input_type_);
}
}
void RenderWidgetHostViewWin::SelectionBoundsChanged(
const ViewHostMsg_SelectionBounds_Params& params) {
bool is_enabled = (text_input_type_ != ui::TEXT_INPUT_TYPE_NONE &&
text_input_type_ != ui::TEXT_INPUT_TYPE_PASSWORD);
// Only update caret position if the input method is enabled.
if (is_enabled) {
caret_rect_ = gfx::UnionRects(params.anchor_rect, params.focus_rect);
imm32_manager_->UpdateCaretRect(m_hWnd, caret_rect_);
}
}
void RenderWidgetHostViewWin::ScrollOffsetChanged() {
}
void RenderWidgetHostViewWin::ImeCancelComposition() {
imm32_manager_->CancelIME(m_hWnd);
}
void RenderWidgetHostViewWin::ImeCompositionRangeChanged(
const gfx::Range& range,
const std::vector<gfx::Rect>& character_bounds) {
composition_range_ = range;
composition_character_bounds_ = character_bounds;
}
void RenderWidgetHostViewWin::Redraw() {
RECT damage_bounds;
GetUpdateRect(&damage_bounds, FALSE);
base::win::ScopedGDIObject<HRGN> damage_region(CreateRectRgn(0, 0, 0, 0));
GetUpdateRgn(damage_region, FALSE);
// Paint the invalid region synchronously. Our caller will not paint again
// until we return, so by painting to the screen here, we ensure effective
// rate-limiting of backing store updates. This helps a lot on pages that
// have animations or fairly expensive layout (e.g., google maps).
//
// We paint this window synchronously, however child windows (i.e. plugins)
// are painted asynchronously. By avoiding synchronous cross-process window
// message dispatching we allow scrolling to be smooth, and also avoid the
// browser process locking up if the plugin process is hung.
//
RedrawWindow(NULL, damage_region, RDW_UPDATENOW | RDW_NOCHILDREN);
// Send the invalid rect in screen coordinates.
gfx::Rect invalid_screen_rect(damage_bounds);
invalid_screen_rect.Offset(GetPixelBounds().OffsetFromOrigin());
PaintPluginWindowsHelper(m_hWnd, invalid_screen_rect);
}
void RenderWidgetHostViewWin::DidUpdateBackingStore(
const gfx::Rect& scroll_rect,
const gfx::Vector2d& scroll_delta,
const std::vector<gfx::Rect>& copy_rects,
const ui::LatencyInfo& latency_info) {
TRACE_EVENT0("content", "RenderWidgetHostViewWin::DidUpdateBackingStore");
software_latency_info_.MergeWith(latency_info);
if (render_widget_host_->is_hidden())
return;
// Schedule invalidations first so that the ScrollWindowEx call is closer to
// Redraw. That minimizes chances of "flicker" resulting if the screen
// refreshes before we have a chance to paint the exposed area. Somewhat
// surprisingly, this ordering matters.
for (size_t i = 0; i < copy_rects.size(); ++i) {
gfx::Rect pixel_rect = gfx::win::DIPToScreenRect(copy_rects[i]);
// Damage might not be DIP aligned.
pixel_rect.Inset(-1, -1);
RECT bounds = pixel_rect.ToRECT();
InvalidateRect(&bounds, false);
}
if (!scroll_rect.IsEmpty()) {
TRACE_EVENT0("content", "ScrollWindowEx");
gfx::Rect pixel_rect = gfx::win::DIPToScreenRect(scroll_rect);
// Damage might not be DIP aligned.
pixel_rect.Inset(-1, -1);
RECT clip_rect = pixel_rect.ToRECT();
float scale = gfx::win::GetDeviceScaleFactor();
int dx = static_cast<int>(scale * scroll_delta.x());
int dy = static_cast<int>(scale * scroll_delta.y());
ScrollWindowEx(dx, dy, NULL, &clip_rect, NULL, NULL, SW_INVALIDATE);
}
if (!about_to_validate_and_paint_)
Redraw();
}
void RenderWidgetHostViewWin::RenderProcessGone(base::TerminationStatus status,
int error_code) {
UpdateCursorIfOverSelf();
Destroy();
}
bool RenderWidgetHostViewWin::CanSubscribeFrame() const {
return render_widget_host_ != NULL;
}
void RenderWidgetHostViewWin::WillWmDestroy() {
CleanupCompositorWindow();
if (base::win::IsTSFAwareRequired())
ui::TSFBridge::GetInstance()->RemoveFocusedClient(this);
}
void RenderWidgetHostViewWin::Destroy() {
// We've been told to destroy.
// By clearing close_on_deactivate_, we prevent further deactivations
// (caused by windows messages resulting from the DestroyWindow) from
// triggering further destructions. The deletion of this is handled by
// OnFinalMessage();
close_on_deactivate_ = false;
render_widget_host_ = NULL;
being_destroyed_ = true;
CleanupCompositorWindow();
// This releases the resources associated with input scope.
UpdateInputScopeIfNecessary(ui::TEXT_INPUT_TYPE_NONE);
if (is_fullscreen_ && win8::IsSingleWindowMetroMode()) {
MetroCloseFrameWindow close_frame_window =
reinterpret_cast<MetroCloseFrameWindow>(
::GetProcAddress(base::win::GetMetroModule(), "CloseFrameWindow"));
DCHECK(close_frame_window);
close_frame_window(m_hWnd);
}
DestroyWindow();
}
void RenderWidgetHostViewWin::SetTooltipText(const string16& tooltip_text) {
if (!render_widget_host_->is_hidden())
EnsureTooltip();
// Clamp the tooltip length to kMaxTooltipLength so that we don't
// accidentally DOS the user with a mega tooltip (since Windows doesn't seem
// to do this itself).
const string16 new_tooltip_text =
gfx::TruncateString(tooltip_text, kMaxTooltipLength);
if (new_tooltip_text != tooltip_text_) {
tooltip_text_ = new_tooltip_text;
// Need to check if the tooltip is already showing so that we don't
// immediately show the tooltip with no delay when we move the mouse from
// a region with no tooltip to a region with a tooltip.
if (::IsWindow(tooltip_hwnd_) && tooltip_showing_) {
::SendMessage(tooltip_hwnd_, TTM_POP, 0, 0);
::SendMessage(tooltip_hwnd_, TTM_POPUP, 0, 0);
}
} else {
// Make sure the tooltip gets closed after TTN_POP gets sent. For some
// reason this doesn't happen automatically, so moving the mouse around
// within the same link/image/etc doesn't cause the tooltip to re-appear.
if (!tooltip_showing_) {
if (::IsWindow(tooltip_hwnd_))
::SendMessage(tooltip_hwnd_, TTM_POP, 0, 0);
}
}
}
BackingStore* RenderWidgetHostViewWin::AllocBackingStore(
const gfx::Size& size) {
return new BackingStoreWin(render_widget_host_, size);
}
void RenderWidgetHostViewWin::CopyFromCompositingSurface(
const gfx::Rect& src_subrect,
const gfx::Size& dst_size,
const base::Callback<void(bool, const SkBitmap&)>& callback) {
base::ScopedClosureRunner scoped_callback_runner(
base::Bind(callback, false, SkBitmap()));
if (!accelerated_surface_)
return;
if (dst_size.IsEmpty() || src_subrect.IsEmpty())
return;
ignore_result(scoped_callback_runner.Release());
accelerated_surface_->AsyncCopyTo(src_subrect, dst_size, callback);
}
void RenderWidgetHostViewWin::CopyFromCompositingSurfaceToVideoFrame(
const gfx::Rect& src_subrect,
const scoped_refptr<media::VideoFrame>& target,
const base::Callback<void(bool)>& callback) {
base::ScopedClosureRunner scoped_callback_runner(base::Bind(callback, false));
if (!accelerated_surface_)
return;
if (!target || (target->format() != media::VideoFrame::YV12 &&
target->format() != media::VideoFrame::I420))
return;
if (src_subrect.IsEmpty())
return;
ignore_result(scoped_callback_runner.Release());
accelerated_surface_->AsyncCopyToVideoFrame(src_subrect, target, callback);
}
bool RenderWidgetHostViewWin::CanCopyToVideoFrame() const {
return accelerated_surface_.get() && render_widget_host_ &&
render_widget_host_->is_accelerated_compositing_active();
}
void RenderWidgetHostViewWin::SetBackground(const SkBitmap& background) {
RenderWidgetHostViewBase::SetBackground(background);
render_widget_host_->SetBackground(background);
}
void RenderWidgetHostViewWin::ProcessAckedTouchEvent(
const TouchEventWithLatencyInfo& touch, InputEventAckState ack_result) {
DCHECK(touch_events_enabled_);
ScopedVector<ui::TouchEvent> events;
if (!MakeUITouchEventsFromWebTouchEvents(touch, &events, LOCAL_COORDINATES))
return;
ui::EventResult result = (ack_result ==
INPUT_EVENT_ACK_STATE_CONSUMED) ? ui::ER_HANDLED : ui::ER_UNHANDLED;
for (ScopedVector<ui::TouchEvent>::iterator iter = events.begin(),
end = events.end(); iter != end; ++iter) {
scoped_ptr<ui::GestureRecognizer::Gestures> gestures;
gestures.reset(gesture_recognizer_->ProcessTouchEventForGesture(
*(*iter), result, this));
ProcessGestures(gestures.get());
}
}
void RenderWidgetHostViewWin::UpdateDesiredTouchMode() {
// Make sure that touch events even make sense.
if (base::win::GetVersion() < base::win::VERSION_WIN7)
return;
if (touch_events_enabled_) {
CHECK(RegisterTouchWindow(m_hWnd, TWF_WANTPALM));
}
}
bool RenderWidgetHostViewWin::CanDispatchToConsumer(
ui::GestureConsumer* consumer) {
CHECK_EQ(static_cast<RenderWidgetHostViewWin*>(consumer), this);
return true;
}
void RenderWidgetHostViewWin::DispatchPostponedGestureEvent(
ui::GestureEvent* event) {
ForwardGestureEventToRenderer(event);
}
void RenderWidgetHostViewWin::DispatchCancelTouchEvent(
ui::TouchEvent* event) {
if (!render_widget_host_ || !touch_events_enabled_ ||
!render_widget_host_->ShouldForwardTouchEvent()) {
return;
}
DCHECK(event->type() == WebKit::WebInputEvent::TouchCancel);
WebKit::WebTouchEvent cancel_event;
cancel_event.type = WebKit::WebInputEvent::TouchCancel;
cancel_event.timeStampSeconds = event->time_stamp().InSecondsF();
render_widget_host_->ForwardTouchEventWithLatencyInfo(
cancel_event, *event->latency());
}
void RenderWidgetHostViewWin::SetHasHorizontalScrollbar(
bool has_horizontal_scrollbar) {
}
void RenderWidgetHostViewWin::SetScrollOffsetPinning(
bool is_pinned_to_left, bool is_pinned_to_right) {
}
void RenderWidgetHostViewWin::SetCompositionText(
const ui::CompositionText& composition) {
if (!base::win::IsTSFAwareRequired()) {
NOTREACHED();
return;
}
if (!render_widget_host_)
return;
// ui::CompositionUnderline should be identical to
// WebKit::WebCompositionUnderline, so that we can do reinterpret_cast safely.
COMPILE_ASSERT(sizeof(ui::CompositionUnderline) ==
sizeof(WebKit::WebCompositionUnderline),
ui_CompositionUnderline__WebKit_WebCompositionUnderline_diff);
const std::vector<WebKit::WebCompositionUnderline>& underlines =
reinterpret_cast<const std::vector<WebKit::WebCompositionUnderline>&>(
composition.underlines);
render_widget_host_->ImeSetComposition(composition.text, underlines,
composition.selection.end(),
composition.selection.end());
}
void RenderWidgetHostViewWin::ConfirmCompositionText() {
if (!base::win::IsTSFAwareRequired()) {
NOTREACHED();
return;
}
// TODO(nona): Implement this function.
NOTIMPLEMENTED();
}
void RenderWidgetHostViewWin::ClearCompositionText() {
if (!base::win::IsTSFAwareRequired()) {
NOTREACHED();
return;
}
// TODO(nona): Implement this function.
NOTIMPLEMENTED();
}
void RenderWidgetHostViewWin::InsertText(const string16& text) {
if (!base::win::IsTSFAwareRequired()) {
NOTREACHED();
return;
}
if (render_widget_host_)
render_widget_host_->ImeConfirmComposition(text,
gfx::Range::InvalidRange(),
false);
}
void RenderWidgetHostViewWin::InsertChar(char16 ch, int flags) {
if (!base::win::IsTSFAwareRequired()) {
NOTREACHED();
return;
}
// TODO(nona): Implement this function.
NOTIMPLEMENTED();
}
gfx::NativeWindow RenderWidgetHostViewWin::GetAttachedWindow() const {
return m_hWnd;
}
ui::TextInputType RenderWidgetHostViewWin::GetTextInputType() const {
if (!base::win::IsTSFAwareRequired()) {
NOTREACHED();
return ui::TEXT_INPUT_TYPE_NONE;
}
return text_input_type_;
}
ui::TextInputMode RenderWidgetHostViewWin::GetTextInputMode() const {
if (!base::win::IsTSFAwareRequired()) {
NOTREACHED();
return ui::TEXT_INPUT_MODE_DEFAULT;
}
return text_input_mode_;
}
bool RenderWidgetHostViewWin::CanComposeInline() const {
if (!base::win::IsTSFAwareRequired()) {
NOTREACHED();
return false;
}
// TODO(nona): Implement this function.
NOTIMPLEMENTED();
return false;
}
gfx::Rect RenderWidgetHostViewWin::GetCaretBounds() const {
if (!base::win::IsTSFAwareRequired()) {
NOTREACHED();
return gfx::Rect(0, 0, 0, 0);
}
RECT tmp_rect = caret_rect_.ToRECT();
ClientToScreen(&tmp_rect);
return gfx::Rect(tmp_rect);
}
bool RenderWidgetHostViewWin::GetCompositionCharacterBounds(
uint32 index, gfx::Rect* rect) const {
if (!base::win::IsTSFAwareRequired()) {
NOTREACHED();
return false;
}
DCHECK(rect);
if (index >= composition_character_bounds_.size())
return false;
RECT rec = composition_character_bounds_[index].ToRECT();
ClientToScreen(&rec);
*rect = gfx::Rect(rec);
return true;
}
bool RenderWidgetHostViewWin::HasCompositionText() const {
if (!base::win::IsTSFAwareRequired()) {
NOTREACHED();
return false;
}
// TODO(nona): Implement this function.
NOTIMPLEMENTED();
return false;
}
bool RenderWidgetHostViewWin::GetTextRange(gfx::Range* range) const {
if (!base::win::IsTSFAwareRequired()) {
NOTREACHED();
return false;
}
range->set_start(selection_text_offset_);
range->set_end(selection_text_offset_ + selection_text_.length());
return false;
}
bool RenderWidgetHostViewWin::GetCompositionTextRange(gfx::Range* range) const {
if (!base::win::IsTSFAwareRequired()) {
NOTREACHED();
return false;
}
// TODO(nona): Implement this function.
NOTIMPLEMENTED();
return false;
}
bool RenderWidgetHostViewWin::GetSelectionRange(gfx::Range* range) const {
if (!base::win::IsTSFAwareRequired()) {
NOTREACHED();
return false;
}
range->set_start(selection_range_.start());
range->set_end(selection_range_.end());
return false;
}
bool RenderWidgetHostViewWin::SetSelectionRange(const gfx::Range& range) {
if (!base::win::IsTSFAwareRequired()) {
NOTREACHED();
return false;
}
// TODO(nona): Implement this function.
NOTIMPLEMENTED();
return false;
}
bool RenderWidgetHostViewWin::DeleteRange(const gfx::Range& range) {
if (!base::win::IsTSFAwareRequired()) {
NOTREACHED();
return false;
}
// TODO(nona): Implement this function.
NOTIMPLEMENTED();
return false;
}
bool RenderWidgetHostViewWin::GetTextFromRange(const gfx::Range& range,
string16* text) const {
if (!base::win::IsTSFAwareRequired()) {
NOTREACHED();
return false;
}
gfx::Range selection_text_range(selection_text_offset_,
selection_text_offset_ + selection_text_.length());
if (!selection_text_range.Contains(range)) {
text->clear();
return false;
}
if (selection_text_range.EqualsIgnoringDirection(range)) {
*text = selection_text_;
} else {
*text = selection_text_.substr(
range.GetMin() - selection_text_offset_,
range.length());
}
return true;
}
void RenderWidgetHostViewWin::OnInputMethodChanged() {
if (!base::win::IsTSFAwareRequired()) {
NOTREACHED();
return;
}
// TODO(nona): Implement this function.
NOTIMPLEMENTED();
}
bool RenderWidgetHostViewWin::ChangeTextDirectionAndLayoutAlignment(
base::i18n::TextDirection direction) {
if (!base::win::IsTSFAwareRequired()) {
NOTREACHED();
return false;
}
// TODO(nona): Implement this function.
NOTIMPLEMENTED();
return false;
}
void RenderWidgetHostViewWin::ExtendSelectionAndDelete(
size_t before,
size_t after) {
if (!base::win::IsTSFAwareRequired()) {
NOTREACHED();
return;
}
if (!render_widget_host_)
return;
render_widget_host_->ExtendSelectionAndDelete(before, after);
}
void RenderWidgetHostViewWin::EnsureCaretInRect(const gfx::Rect& rect) {
// TODO(nona): Implement this function.
NOTIMPLEMENTED();
}
///////////////////////////////////////////////////////////////////////////////
// RenderWidgetHostViewWin, private:
LRESULT RenderWidgetHostViewWin::OnCreate(CREATESTRUCT* create_struct) {
TRACE_EVENT0("browser", "RenderWidgetHostViewWin::OnCreate");
// Call the WM_INPUTLANGCHANGE message handler to initialize the input locale
// of a browser process.
OnInputLangChange(0, 0);
// Marks that window as supporting mouse-wheel messages rerouting so it is
// scrolled when under the mouse pointer even if inactive.
props_.push_back(ui::SetWindowSupportsRerouteMouseWheel(m_hWnd));
WTSRegisterSessionNotification(m_hWnd, NOTIFY_FOR_THIS_SESSION);
UpdateDesiredTouchMode();
UpdateIMEState();
return 0;
}
void RenderWidgetHostViewWin::OnActivate(UINT action, BOOL minimized,
HWND window) {
TRACE_EVENT0("browser", "RenderWidgetHostViewWin::OnActivate");
// If the container is a popup, clicking elsewhere on screen should close the
// popup.
if (close_on_deactivate_ && action == WA_INACTIVE) {
// Send a windows message so that any derived classes
// will get a change to override the default handling
SendMessage(WM_CANCELMODE);
}
}
void RenderWidgetHostViewWin::OnDestroy() {
TRACE_EVENT0("browser", "RenderWidgetHostViewWin::OnDestroy");
DetachPluginsHelper(m_hWnd);
props_.clear();
if (base::win::GetVersion() >= base::win::VERSION_WIN7 &&
IsTouchWindow(m_hWnd, NULL)) {
UnregisterTouchWindow(m_hWnd);
}
CleanupCompositorWindow();
WTSUnRegisterSessionNotification(m_hWnd);
ResetTooltip();
TrackMouseLeave(false);
}
void RenderWidgetHostViewWin::OnPaint(HDC unused_dc) {
TRACE_EVENT0("browser", "RenderWidgetHostViewWin::OnPaint");
// Grab the region to paint before creation of paint_dc since it clears the
// damage region.
base::win::ScopedGDIObject<HRGN> damage_region(CreateRectRgn(0, 0, 0, 0));
GetUpdateRgn(damage_region, FALSE);
CPaintDC paint_dc(m_hWnd);
if (!render_widget_host_)
return;
DCHECK(render_widget_host_->GetProcess()->HasConnection());
// If the GPU process is rendering to a child window, compositing is
// already triggered by damage to compositor_host_window_, so all we need to
// do here is clear borders during resize.
if (compositor_host_window_ &&
render_widget_host_->is_accelerated_compositing_active()) {
RECT host_rect, child_rect;
GetClientRect(&host_rect);
if (::GetClientRect(compositor_host_window_, &child_rect) &&
(child_rect.right < host_rect.right ||
child_rect.bottom < host_rect.bottom)) {
paint_dc.FillRect(&host_rect,
reinterpret_cast<HBRUSH>(GetStockObject(WHITE_BRUSH)));
}
return;
}
if (accelerated_surface_.get() &&
render_widget_host_->is_accelerated_compositing_active()) {
AcceleratedPaint(paint_dc.m_hDC);
return;
}
about_to_validate_and_paint_ = true;
BackingStoreWin* backing_store = static_cast<BackingStoreWin*>(
render_widget_host_->GetBackingStore(true));
// We initialize |paint_dc| (and thus call BeginPaint()) after calling
// GetBackingStore(), so that if it updates the invalid rect we'll catch the
// changes and repaint them.
about_to_validate_and_paint_ = false;
if (compositor_host_window_ && hide_compositor_window_at_next_paint_) {
::ShowWindow(compositor_host_window_, SW_HIDE);
hide_compositor_window_at_next_paint_ = false;
}
gfx::Rect damaged_rect(paint_dc.m_ps.rcPaint);
if (damaged_rect.IsEmpty())
return;
if (backing_store) {
gfx::Rect bitmap_rect(gfx::Point(),
gfx::win::DIPToScreenSize(backing_store->size()));
bool manage_colors = BackingStoreWin::ColorManagementEnabled();
if (manage_colors)
SetICMMode(paint_dc.m_hDC, ICM_ON);
// Blit only the damaged regions from the backing store.
DWORD data_size = GetRegionData(damage_region, 0, NULL);
scoped_ptr<char[]> region_data_buf;
RGNDATA* region_data = NULL;
RECT* region_rects = NULL;
if (data_size) {
region_data_buf.reset(new char[data_size]);
region_data = reinterpret_cast<RGNDATA*>(region_data_buf.get());
region_rects = reinterpret_cast<RECT*>(region_data->Buffer);
data_size = GetRegionData(damage_region, data_size, region_data);
}
if (!data_size) {
// Grabbing the damaged regions failed, fake with the whole rect.
data_size = sizeof(RGNDATAHEADER) + sizeof(RECT);
region_data_buf.reset(new char[data_size]);
region_data = reinterpret_cast<RGNDATA*>(region_data_buf.get());
region_rects = reinterpret_cast<RECT*>(region_data->Buffer);
region_data->rdh.nCount = 1;
region_rects[0] = damaged_rect.ToRECT();
}
for (DWORD i = 0; i < region_data->rdh.nCount; ++i) {
gfx::Rect paint_rect =
gfx::IntersectRects(bitmap_rect, gfx::Rect(region_rects[i]));
if (!paint_rect.IsEmpty()) {
BitBlt(paint_dc.m_hDC,
paint_rect.x(),
paint_rect.y(),
paint_rect.width(),
paint_rect.height(),
backing_store->hdc(),
paint_rect.x(),
paint_rect.y(),
SRCCOPY);
}
}
if (manage_colors)
SetICMMode(paint_dc.m_hDC, ICM_OFF);
// Fill the remaining portion of the damaged_rect with the background
if (damaged_rect.right() > bitmap_rect.right()) {
RECT r;
r.left = std::max(bitmap_rect.right(), damaged_rect.x());
r.right = damaged_rect.right();
r.top = damaged_rect.y();
r.bottom = std::min(bitmap_rect.bottom(), damaged_rect.bottom());
DrawBackground(r, &paint_dc);
}
if (damaged_rect.bottom() > bitmap_rect.bottom()) {
RECT r;
r.left = damaged_rect.x();
r.right = damaged_rect.right();
r.top = std::max(bitmap_rect.bottom(), damaged_rect.y());
r.bottom = damaged_rect.bottom();
DrawBackground(r, &paint_dc);
}
if (!whiteout_start_time_.is_null()) {
TimeDelta whiteout_duration = TimeTicks::Now() - whiteout_start_time_;
UMA_HISTOGRAM_TIMES("MPArch.RWHH_WhiteoutDuration", whiteout_duration);
// Reset the start time to 0 so that we start recording again the next
// time the backing store is NULL...
whiteout_start_time_ = TimeTicks();
}
if (!web_contents_switch_paint_time_.is_null()) {
TimeDelta web_contents_switch_paint_duration = TimeTicks::Now() -
web_contents_switch_paint_time_;
UMA_HISTOGRAM_TIMES("MPArch.RWH_TabSwitchPaintDuration",
web_contents_switch_paint_duration);
// Reset contents_switch_paint_time_ to 0 so future tab selections are
// recorded.
web_contents_switch_paint_time_ = TimeTicks();
}
software_latency_info_.AddLatencyNumber(
ui::INPUT_EVENT_LATENCY_TERMINATED_FRAME_SWAP_COMPONENT, 0, 0);
render_widget_host_->FrameSwapped(software_latency_info_);
software_latency_info_.Clear();
} else {
DrawBackground(paint_dc.m_ps.rcPaint, &paint_dc);
if (whiteout_start_time_.is_null())
whiteout_start_time_ = TimeTicks::Now();
}
}
void RenderWidgetHostViewWin::DrawBackground(const RECT& dirty_rect,
CPaintDC* dc) {
if (!background_.empty()) {
gfx::Rect dirty_area(dirty_rect);
gfx::Canvas canvas(dirty_area.size(), 1.0f, true);
canvas.Translate(-dirty_area.OffsetFromOrigin());
gfx::Rect dc_rect(dc->m_ps.rcPaint);
// TODO(pkotwicz): Fix |background_| such that it is an ImageSkia.
canvas.TileImageInt(gfx::ImageSkia::CreateFrom1xBitmap(background_),
0, 0, dc_rect.width(), dc_rect.height());
skia::DrawToNativeContext(canvas.sk_canvas(), *dc, dirty_area.x(),
dirty_area.y(), NULL);
} else {
HBRUSH white_brush = reinterpret_cast<HBRUSH>(GetStockObject(WHITE_BRUSH));
dc->FillRect(&dirty_rect, white_brush);
}
}
void RenderWidgetHostViewWin::OnNCPaint(HRGN update_region) {
TRACE_EVENT0("browser", "RenderWidgetHostViewWin::OnNCPaint");
// Do nothing. This suppresses the resize corner that Windows would
// otherwise draw for us.
}
void RenderWidgetHostViewWin::SetClickthroughRegion(SkRegion* region) {
transparent_region_.reset(region);
}
LRESULT RenderWidgetHostViewWin::OnNCHitTest(const CPoint& point) {
TRACE_EVENT0("browser", "RenderWidgetHostViewWin::OnNCHitTest");
RECT rc;
GetWindowRect(&rc);
if (transparent_region_.get() &&
transparent_region_->contains(point.x - rc.left, point.y - rc.top)) {
SetMsgHandled(TRUE);
return HTTRANSPARENT;
}
SetMsgHandled(FALSE);
return 0;
}
LRESULT RenderWidgetHostViewWin::OnEraseBkgnd(HDC dc) {
TRACE_EVENT0("browser", "RenderWidgetHostViewWin::OnEraseBkgnd");
return 1;
}
LRESULT RenderWidgetHostViewWin::OnSetCursor(HWND window, UINT hittest_code,
UINT mouse_message_id) {
TRACE_EVENT0("browser", "RenderWidgetHostViewWin::OnSetCursor");
UpdateCursorIfOverSelf();
return 0;
}
void RenderWidgetHostViewWin::OnSetFocus(HWND window) {
TRACE_EVENT0("browser", "RenderWidgetHostViewWin::OnSetFocus");
if (!render_widget_host_)
return;
if (GetBrowserAccessibilityManager())
GetBrowserAccessibilityManager()->GotFocus(pointer_down_context_);
render_widget_host_->GotFocus();
render_widget_host_->SetActive(true);
if (base::win::IsTSFAwareRequired())
ui::TSFBridge::GetInstance()->SetFocusedClient(m_hWnd, this);
}
void RenderWidgetHostViewWin::OnKillFocus(HWND window) {
TRACE_EVENT0("browser", "RenderWidgetHostViewWin::OnKillFocus");
if (!render_widget_host_)
return;
render_widget_host_->SetActive(false);
render_widget_host_->Blur();
last_touch_location_ = gfx::Point(-1, -1);
if (base::win::IsTSFAwareRequired())
ui::TSFBridge::GetInstance()->RemoveFocusedClient(this);
}
void RenderWidgetHostViewWin::OnCaptureChanged(HWND window) {
TRACE_EVENT0("browser", "RenderWidgetHostViewWin::OnCaptureChanged");
if (render_widget_host_)
render_widget_host_->LostCapture();
pointer_down_context_ = false;
}
void RenderWidgetHostViewWin::OnCancelMode() {
TRACE_EVENT0("browser", "RenderWidgetHostViewWin::OnCancelMode");
if (render_widget_host_)
render_widget_host_->LostCapture();
if ((is_fullscreen_ || close_on_deactivate_) &&
!weak_factory_.HasWeakPtrs()) {
// Dismiss popups and menus. We do this asynchronously to avoid changing
// activation within this callstack, which may interfere with another window
// being activated. We can synchronously hide the window, but we need to
// not change activation while doing so.
SetWindowPos(NULL, 0, 0, 0, 0,
SWP_HIDEWINDOW | SWP_NOACTIVATE | SWP_NOMOVE |
SWP_NOREPOSITION | SWP_NOSIZE | SWP_NOZORDER);
base::MessageLoop::current()->PostTask(
FROM_HERE,
base::Bind(&RenderWidgetHostViewWin::ShutdownHost,
weak_factory_.GetWeakPtr()));
}
}
void RenderWidgetHostViewWin::OnInputLangChange(DWORD character_set,
HKL input_language_id) {
TRACE_EVENT0("browser", "RenderWidgetHostViewWin::OnInputLangChange");
// Send the given Locale ID to the IMM32Manager object and retrieves whether
// or not the current input context has IMEs.
// If the current input context has IMEs, a browser process has to send a
// request to a renderer process that it needs status messages about
// the focused edit control from the renderer process.
// On the other hand, if the current input context does not have IMEs, the
// browser process also has to send a request to the renderer process that
// it does not need the status messages any longer.
// To minimize the number of this notification request, we should check if
// the browser process is actually retrieving the status messages (this
// state is stored in ime_notification_) and send a request only if the
// browser process has to update this status, its details are listed below:
// * If a browser process is not retrieving the status messages,
// (i.e. ime_notification_ == false),
// send this request only if the input context does have IMEs,
// (i.e. ime_status == true);
// When it successfully sends the request, toggle its notification status,
// (i.e.ime_notification_ = !ime_notification_ = true).
// * If a browser process is retrieving the status messages
// (i.e. ime_notification_ == true),
// send this request only if the input context does not have IMEs,
// (i.e. ime_status == false).
// When it successfully sends the request, toggle its notification status,
// (i.e.ime_notification_ = !ime_notification_ = false).
// To analyze the above actions, we can optimize them into the ones
// listed below:
// 1 Sending a request only if ime_status_ != ime_notification_, and;
// 2 Copying ime_status to ime_notification_ if it sends the request
// successfully (because Action 1 shows ime_status = !ime_notification_.)
bool ime_status = imm32_manager_->SetInputLanguage();
if (ime_status != ime_notification_) {
if (render_widget_host_) {
render_widget_host_->SetInputMethodActive(ime_status);
ime_notification_ = ime_status;
}
}
// Call DefWindowProc() for consistency with other Chrome windows.
// TODO(hbono): This is a speculative fix for Bug 36354 and this code may be
// reverted if it does not fix it.
SetMsgHandled(FALSE);
}
void RenderWidgetHostViewWin::OnThemeChanged() {
TRACE_EVENT0("browser", "RenderWidgetHostViewWin::OnThemeChanged");
if (!render_widget_host_)
return;
render_widget_host_->Send(new ViewMsg_ThemeChanged(
render_widget_host_->GetRoutingID()));
}
LRESULT RenderWidgetHostViewWin::OnNotify(int w_param, NMHDR* header) {
TRACE_EVENT0("browser", "RenderWidgetHostViewWin::OnNotify");
if (tooltip_hwnd_ == NULL)
return 0;
switch (header->code) {
case TTN_GETDISPINFO: {
NMTTDISPINFOW* tooltip_info = reinterpret_cast<NMTTDISPINFOW*>(header);
tooltip_info->szText[0] = L'\0';
tooltip_info->lpszText = const_cast<WCHAR*>(tooltip_text_.c_str());
::SendMessage(
tooltip_hwnd_, TTM_SETMAXTIPWIDTH, 0, kTooltipMaxWidthPixels);
SetMsgHandled(TRUE);
break;
}
case TTN_POP:
tooltip_showing_ = false;
SetMsgHandled(TRUE);
break;
case TTN_SHOW:
// Tooltip shouldn't be shown when the mouse is locked.
DCHECK(!mouse_locked_);
tooltip_showing_ = true;
SetMsgHandled(TRUE);
break;
}
return 0;
}
LRESULT RenderWidgetHostViewWin::OnImeSetContext(
UINT message, WPARAM wparam, LPARAM lparam, BOOL& handled) {
TRACE_EVENT0("browser", "RenderWidgetHostViewWin::OnImeSetContext");
if (!render_widget_host_)
return 0;
// We need status messages about the focused input control from a
// renderer process when:
// * the current input context has IMEs, and;
// * an application is activated.
// This seems to tell we should also check if the current input context has
// IMEs before sending a request, however, this WM_IME_SETCONTEXT is
// fortunately sent to an application only while the input context has IMEs.
// Therefore, we just start/stop status messages according to the activation
// status of this application without checks.
bool activated = (wparam == TRUE);
if (render_widget_host_) {
render_widget_host_->SetInputMethodActive(activated);
ime_notification_ = activated;
}
if (ime_notification_)
imm32_manager_->CreateImeWindow(m_hWnd);
imm32_manager_->CleanupComposition(m_hWnd);
return imm32_manager_->SetImeWindowStyle(
m_hWnd, message, wparam, lparam, &handled);
}
LRESULT RenderWidgetHostViewWin::OnImeStartComposition(
UINT message, WPARAM wparam, LPARAM lparam, BOOL& handled) {
TRACE_EVENT0("browser", "RenderWidgetHostViewWin::OnImeStartComposition");
if (!render_widget_host_)
return 0;
// Reset the composition status and create IME windows.
imm32_manager_->CreateImeWindow(m_hWnd);
imm32_manager_->ResetComposition(m_hWnd);
// When the focus is on an element that does not draw composition by itself
// (i.e., PPAPI plugin not handling IME), let IME to draw the text. Otherwise
// we have to prevent WTL from calling ::DefWindowProc() because the function
// calls ::ImmSetCompositionWindow() and ::ImmSetCandidateWindow() to
// over-write the position of IME windows.
handled = (can_compose_inline_ ? TRUE : FALSE);
return 0;
}
LRESULT RenderWidgetHostViewWin::OnImeComposition(
UINT message, WPARAM wparam, LPARAM lparam, BOOL& handled) {
TRACE_EVENT0("browser", "RenderWidgetHostViewWin::OnImeComposition");
if (!render_widget_host_)
return 0;
// At first, update the position of the IME window.
imm32_manager_->UpdateImeWindow(m_hWnd);
// ui::CompositionUnderline should be identical to
// WebKit::WebCompositionUnderline, so that we can do reinterpret_cast safely.
COMPILE_ASSERT(sizeof(ui::CompositionUnderline) ==
sizeof(WebKit::WebCompositionUnderline),
ui_CompositionUnderline__WebKit_WebCompositionUnderline_diff);
// Retrieve the result string and its attributes of the ongoing composition
// and send it to a renderer process.
ui::CompositionText composition;
if (imm32_manager_->GetResult(m_hWnd, lparam, &composition.text)) {
render_widget_host_->ImeConfirmComposition(
composition.text, gfx::Range::InvalidRange(), false);
imm32_manager_->ResetComposition(m_hWnd);
// Fall though and try reading the composition string.
// Japanese IMEs send a message containing both GCS_RESULTSTR and
// GCS_COMPSTR, which means an ongoing composition has been finished
// by the start of another composition.
}
// Retrieve the composition string and its attributes of the ongoing
// composition and send it to a renderer process.
if (imm32_manager_->GetComposition(m_hWnd, lparam, &composition)) {
// TODO(suzhe): due to a bug of webkit, we can't use selection range with
// composition string. See: https://bugs.webkit.org/show_bug.cgi?id=37788
composition.selection = gfx::Range(composition.selection.end());
// TODO(suzhe): convert both renderer_host and renderer to use
// ui::CompositionText.
const std::vector<WebKit::WebCompositionUnderline>& underlines =
reinterpret_cast<const std::vector<WebKit::WebCompositionUnderline>&>(
composition.underlines);
render_widget_host_->ImeSetComposition(
composition.text, underlines,
composition.selection.start(), composition.selection.end());
}
// We have to prevent WTL from calling ::DefWindowProc() because we do not
// want for the IMM (Input Method Manager) to send WM_IME_CHAR messages.
handled = TRUE;
if (!can_compose_inline_) {
// When the focus is on an element that does not draw composition by itself
// (i.e., PPAPI plugin not handling IME), let IME to draw the text, which
// is the default behavior of DefWindowProc. Note, however, even in this
// case we don't want GCS_RESULTSTR to be converted to WM_IME_CHAR messages.
// Thus we explicitly drop the flag.
return ::DefWindowProc(m_hWnd, message, wparam, lparam & ~GCS_RESULTSTR);
}
return 0;
}
LRESULT RenderWidgetHostViewWin::OnImeEndComposition(
UINT message, WPARAM wparam, LPARAM lparam, BOOL& handled) {
TRACE_EVENT0("browser", "RenderWidgetHostViewWin::OnImeEndComposition");
if (!render_widget_host_)
return 0;
if (imm32_manager_->is_composing()) {
// A composition has been ended while there is an ongoing composition,
// i.e. the ongoing composition has been canceled.
// We need to reset the composition status both of the IMM32Manager object
// and of the renderer process.
render_widget_host_->ImeCancelComposition();
imm32_manager_->ResetComposition(m_hWnd);
}
imm32_manager_->DestroyImeWindow(m_hWnd);
// Let WTL call ::DefWindowProc() and release its resources.
handled = FALSE;
return 0;
}
LRESULT RenderWidgetHostViewWin::OnImeRequest(
UINT message, WPARAM wparam, LPARAM lparam, BOOL& handled) {
TRACE_EVENT0("browser", "RenderWidgetHostViewWin::OnImeRequest");
if (!render_widget_host_) {
handled = FALSE;
return 0;
}
// Should not receive WM_IME_REQUEST message, if IME is disabled.
if (text_input_type_ == ui::TEXT_INPUT_TYPE_NONE ||
text_input_type_ == ui::TEXT_INPUT_TYPE_PASSWORD) {
handled = FALSE;
return 0;
}
switch (wparam) {
case IMR_RECONVERTSTRING:
return OnReconvertString(reinterpret_cast<RECONVERTSTRING*>(lparam));
case IMR_DOCUMENTFEED:
return OnDocumentFeed(reinterpret_cast<RECONVERTSTRING*>(lparam));
case IMR_QUERYCHARPOSITION:
return OnQueryCharPosition(reinterpret_cast<IMECHARPOSITION*>(lparam));
default:
handled = FALSE;
return 0;
}
}
LRESULT RenderWidgetHostViewWin::OnMouseEvent(UINT message, WPARAM wparam,
LPARAM lparam, BOOL& handled) {
TRACE_EVENT0("browser", "RenderWidgetHostViewWin::OnMouseEvent");
handled = TRUE;
if (message == WM_MOUSELEAVE)
ignore_mouse_movement_ = true;
if (mouse_locked_) {
HandleLockedMouseEvent(message, wparam, lparam);
MoveCursorToCenterIfNecessary();
return 0;
}
if (::IsWindow(tooltip_hwnd_)) {
// Forward mouse events through to the tooltip window
MSG msg;
msg.hwnd = m_hWnd;
msg.message = message;
msg.wParam = wparam;
msg.lParam = lparam;
SendMessage(tooltip_hwnd_, TTM_RELAYEVENT, NULL,
reinterpret_cast<LPARAM>(&msg));
}
// Due to a bug in Windows, the simulated mouse events for a touch event
// outside our bounds are delivered to us if we were previously focused
// causing crbug.com/159982. As a workaround, we check if this event is a
// simulated mouse event outside our bounds, and if so, we send it to the
// right window.
if ((message == WM_LBUTTONDOWN || message == WM_LBUTTONUP) &&
ui::IsMouseEventFromTouch(message)) {
CPoint cursor_pos(GET_X_LPARAM(lparam), GET_Y_LPARAM(lparam));
ClientToScreen(&cursor_pos);
if (!GetPixelBounds().Contains(cursor_pos.x, cursor_pos.y)) {
HWND window = WindowFromPoint(cursor_pos);
if (window) {
LRESULT nc_hit_result = SendMessage(window, WM_NCHITTEST, 0,
MAKELPARAM(cursor_pos.x, cursor_pos.y));
const bool in_client_area = (nc_hit_result == HTCLIENT);
int event_type;
if (message == WM_LBUTTONDOWN)
event_type = in_client_area ? WM_LBUTTONDOWN : WM_NCLBUTTONDOWN;
else
event_type = in_client_area ? WM_LBUTTONUP : WM_NCLBUTTONUP;
// Convert the coordinates to the target window.
RECT window_bounds;
::GetWindowRect(window, &window_bounds);
int window_x = cursor_pos.x - window_bounds.left;
int window_y = cursor_pos.y - window_bounds.top;
if (in_client_area) {
::PostMessage(window, event_type, wparam,
MAKELPARAM(window_x, window_y));
} else {
::PostMessage(window, event_type, nc_hit_result,
MAKELPARAM(cursor_pos.x, cursor_pos.y));
}
return 0;
}
}
}
// TODO(jcampan): I am not sure if we should forward the message to the
// WebContentsImpl first in the case of popups. If we do, we would need to
// convert the click from the popup window coordinates to the WebContentsImpl'
// window coordinates. For now we don't forward the message in that case to
// address bug #907474.
// Note: GetParent() on popup windows returns the top window and not the
// parent the window was created with (the parent and the owner of the popup
// is the first non-child view of the view that was specified to the create
// call). So the WebContentsImpl's window would have to be specified to the
// RenderViewHostHWND as there is no way to retrieve it from the HWND.
// Don't forward if the container is a popup or fullscreen widget.
if (!is_fullscreen_ && !close_on_deactivate_) {
switch (message) {
case WM_LBUTTONDOWN:
case WM_MBUTTONDOWN:
case WM_RBUTTONDOWN:
// Finish the ongoing composition whenever a mouse click happens.
// It matches IE's behavior.
if (base::win::IsTSFAwareRequired()) {
ui::TSFBridge::GetInstance()->CancelComposition();
} else {
imm32_manager_->CleanupComposition(m_hWnd);
}
// Fall through.
case WM_MOUSEMOVE:
case WM_MOUSELEAVE: {
// Give the WebContentsImpl first crack at the message. It may want to
// prevent forwarding to the renderer if some higher level browser
// functionality is invoked.
LPARAM parent_msg_lparam = lparam;
if (message != WM_MOUSELEAVE) {
// For the messages except WM_MOUSELEAVE, before forwarding them to
// parent window, we should adjust cursor position from client
// coordinates in current window to client coordinates in its parent
// window.
CPoint cursor_pos(GET_X_LPARAM(lparam), GET_Y_LPARAM(lparam));
ClientToScreen(&cursor_pos);
GetParent().ScreenToClient(&cursor_pos);
parent_msg_lparam = MAKELPARAM(cursor_pos.x, cursor_pos.y);
}
if (SendMessage(GetParent(), message, wparam, parent_msg_lparam) != 0) {
TRACE_EVENT0("browser", "EarlyOut_SentToParent");
return 1;
}
}
}
}
if (message == WM_LBUTTONDOWN && pointer_down_context_ &&
GetBrowserAccessibilityManager()) {
GetBrowserAccessibilityManager()->GotMouseDown();
}
if (message == WM_LBUTTONUP && ui::IsMouseEventFromTouch(message) &&
base::win::IsMetroProcess())
pointer_down_context_ = false;
ForwardMouseEventToRenderer(message, wparam, lparam);
return 0;
}
LRESULT RenderWidgetHostViewWin::OnKeyEvent(UINT message, WPARAM wparam,
LPARAM lparam, BOOL& handled) {
TRACE_EVENT0("browser", "RenderWidgetHostViewWin::OnKeyEvent");
handled = TRUE;
// When Escape is pressed, force fullscreen windows to close if necessary.
if ((message == WM_KEYDOWN || message == WM_KEYUP) && wparam == VK_ESCAPE) {
if (is_fullscreen_) {
SendMessage(WM_CANCELMODE);
return 0;
}
}
// If we are a pop-up, forward tab related messages to our parent HWND, so
// that we are dismissed appropriately and so that the focus advance in our
// parent.
// TODO(jcampan): http://b/issue?id=1192881 Could be abstracted in the
// FocusManager.
if (close_on_deactivate_ &&
(((message == WM_KEYDOWN || message == WM_KEYUP) && (wparam == VK_TAB)) ||
(message == WM_CHAR && wparam == L'\t'))) {
// First close the pop-up.
SendMessage(WM_CANCELMODE);
// Then move the focus by forwarding the tab key to the parent.
return ::SendMessage(GetParent(), message, wparam, lparam);
}
if (!render_widget_host_)
return 0;
// Bug 1845: we need to update the text direction when a user releases
// either a right-shift key or a right-control key after pressing both of
// them. So, we just update the text direction while a user is pressing the
// keys, and we notify the text direction when a user releases either of them.
// Bug 9718: http://crbug.com/9718 To investigate IE and notepad, this
// shortcut is enabled only on a PC having RTL keyboard layouts installed.
// We should emulate them.
if (ui::IMM32Manager::IsRTLKeyboardLayoutInstalled()) {
if (message == WM_KEYDOWN) {
if (wparam == VK_SHIFT) {
base::i18n::TextDirection dir;
if (ui::IMM32Manager::IsCtrlShiftPressed(&dir)) {
render_widget_host_->UpdateTextDirection(
dir == base::i18n::RIGHT_TO_LEFT ?
WebKit::WebTextDirectionRightToLeft :
WebKit::WebTextDirectionLeftToRight);
}
} else if (wparam != VK_CONTROL) {
// Bug 9762: http://crbug.com/9762 A user pressed a key except shift
// and control keys.
// When a user presses a key while he/she holds control and shift keys,
// we cancel sending an IPC message in NotifyTextDirection() below and
// ignore succeeding UpdateTextDirection() calls while we call
// NotifyTextDirection().
// To cancel it, this call set a flag that prevents sending an IPC
// message in NotifyTextDirection() only if we are going to send it.
// It is harmless to call this function if we aren't going to send it.
render_widget_host_->CancelUpdateTextDirection();
}
} else if (message == WM_KEYUP &&
(wparam == VK_SHIFT || wparam == VK_CONTROL)) {
// We send an IPC message only if we need to update the text direction.
render_widget_host_->NotifyTextDirection();
}
}
// Special processing for enter key: When user hits enter in omnibox
// we change focus to render host after the navigation, so repeat WM_KEYDOWNs
// and WM_KEYUP are going to render host, despite being initiated in other
// window. This code filters out these messages.
bool ignore_keyboard_event = false;
if (wparam == VK_RETURN) {
if (message == WM_KEYDOWN || message == WM_SYSKEYDOWN) {
if (KF_REPEAT & HIWORD(lparam)) {
// this is a repeated key
if (!capture_enter_key_)
ignore_keyboard_event = true;
} else {
capture_enter_key_ = true;
}
} else if (message == WM_KEYUP || message == WM_SYSKEYUP) {
if (!capture_enter_key_)
ignore_keyboard_event = true;
capture_enter_key_ = false;
} else {
// Ignore all other keyboard events for the enter key if not captured.
if (!capture_enter_key_)
ignore_keyboard_event = true;
}
}
if (render_widget_host_ && !ignore_keyboard_event) {
MSG msg = { m_hWnd, message, wparam, lparam };
render_widget_host_->ForwardKeyboardEvent(NativeWebKeyboardEvent(msg));
}
return 0;
}
LRESULT RenderWidgetHostViewWin::OnWheelEvent(UINT message, WPARAM wparam,
LPARAM lparam, BOOL& handled) {
TRACE_EVENT0("browser", "RenderWidgetHostViewWin::OnWheelEvent");
// Forward the mouse-wheel message to the window under the mouse if it belongs
// to us.
if (message == WM_MOUSEWHEEL &&
ui::RerouteMouseWheel(m_hWnd, wparam, lparam)) {
handled = TRUE;
return 0;
}
// We get mouse wheel/scroll messages even if we are not in the foreground.
// So here we check if we have any owned popup windows in the foreground and
// dismiss them.
if (m_hWnd != GetForegroundWindow()) {
HWND toplevel_hwnd = ::GetAncestor(m_hWnd, GA_ROOT);
EnumThreadWindows(
GetCurrentThreadId(),
DismissOwnedPopups,
reinterpret_cast<LPARAM>(toplevel_hwnd));
}
if (render_widget_host_) {
WebKit::WebMouseWheelEvent wheel_event =
WebMouseWheelEventBuilder::Build(m_hWnd, message, wparam, lparam);
float scale = gfx::win::GetDeviceScaleFactor();
wheel_event.x /= scale;
wheel_event.y /= scale;
wheel_event.deltaX /= scale;
wheel_event.deltaY /= scale;
render_widget_host_->ForwardWheelEvent(wheel_event);
}
handled = TRUE;
return 0;
}
WebTouchState::WebTouchState(const RenderWidgetHostViewWin* window)
: window_(window),
id_generator_(0) {
}
size_t WebTouchState::UpdateTouchPoints(
TOUCHINPUT* points, size_t count) {
// First we reset all touch event state. This involves removing any released
// touchpoints and marking the rest as stationary. After that we go through
// and alter/add any touchpoints (from the touch input buffer) that we can
// coalesce into a single message. The return value is the number of consumed
// input message.
WebKit::WebTouchPoint* point = touch_event_.touches;
WebKit::WebTouchPoint* end = point + touch_event_.touchesLength;
while (point < end) {
if (point->state == WebKit::WebTouchPoint::StateReleased) {
*point = *(--end);
--touch_event_.touchesLength;
} else {
point->state = WebKit::WebTouchPoint::StateStationary;
point++;
}
}
touch_event_.changedTouchesLength = 0;
touch_event_.modifiers = content::EventFlagsToWebEventModifiers(
ui::GetModifiersFromKeyState());
// Consume all events of the same type and add them to the changed list.
int last_type = 0;
for (size_t i = 0; i < count; ++i) {
unsigned int mapped_id = GetMappedTouch(points[i].dwID);
WebKit::WebTouchPoint* point = NULL;
for (unsigned j = 0; j < touch_event_.touchesLength; ++j) {
if (static_cast<DWORD>(touch_event_.touches[j].id) == mapped_id) {
point = &touch_event_.touches[j];
break;
}
}
// Use a move instead if we see a down on a point we already have.
int type = GetTouchType(points[i]);
if (point && type == TOUCHEVENTF_DOWN)
SetTouchType(&points[i], TOUCHEVENTF_MOVE);
// Stop processing when the event type changes.
if (touch_event_.changedTouchesLength && type != last_type)
return i;
touch_event_.timeStampSeconds = points[i].dwTime / 1000.0;
last_type = type;
switch (type) {
case TOUCHEVENTF_DOWN: {
if (!(point = AddTouchPoint(&points[i])))
continue;
touch_event_.type = WebKit::WebInputEvent::TouchStart;
break;
}
case TOUCHEVENTF_UP: {
if (!point) // Just throw away a stray up.
continue;
point->state = WebKit::WebTouchPoint::StateReleased;
UpdateTouchPoint(point, &points[i]);
touch_event_.type = WebKit::WebInputEvent::TouchEnd;
break;
}
case TOUCHEVENTF_MOVE: {
if (point) {
point->state = WebKit::WebTouchPoint::StateMoved;
// Don't update the message if the point didn't really move.
if (UpdateTouchPoint(point, &points[i]))
continue;
touch_event_.type = WebKit::WebInputEvent::TouchMove;
} else if (touch_event_.changedTouchesLength) {
RemoveExpiredMappings();
// Can't add a point if we're already handling move events.
return i;
} else {
// Treat a move with no existing point as a down.
if (!(point = AddTouchPoint(&points[i])))
continue;
last_type = TOUCHEVENTF_DOWN;
SetTouchType(&points[i], TOUCHEVENTF_DOWN);
touch_event_.type = WebKit::WebInputEvent::TouchStart;
}
break;
}
default:
NOTREACHED();
continue;
}
touch_event_.changedTouches[touch_event_.changedTouchesLength++] = *point;
}
RemoveExpiredMappings();
return count;
}
void WebTouchState::RemoveExpiredMappings() {
WebKit::WebTouchPoint* point = touch_event_.touches;
WebKit::WebTouchPoint* end = point + touch_event_.touchesLength;
for (; point < end; ++point) {
if (point->state == WebKit::WebTouchPoint::StateReleased)
id_generator_.ReleaseGeneratedID(point->id);
}
}
bool WebTouchState::ReleaseTouchPoints() {
if (touch_event_.touchesLength == 0)
return false;
// Mark every active touchpoint as released.
touch_event_.type = WebKit::WebInputEvent::TouchEnd;
touch_event_.changedTouchesLength = touch_event_.touchesLength;
for (unsigned int i = 0; i < touch_event_.touchesLength; ++i) {
touch_event_.touches[i].state = WebKit::WebTouchPoint::StateReleased;
touch_event_.changedTouches[i].state =
WebKit::WebTouchPoint::StateReleased;
}
return true;
}
WebKit::WebTouchPoint* WebTouchState::AddTouchPoint(
TOUCHINPUT* touch_input) {
DCHECK(touch_event_.touchesLength <
WebKit::WebTouchEvent::touchesLengthCap);
if (touch_event_.touchesLength >=
WebKit::WebTouchEvent::touchesLengthCap)
return NULL;
WebKit::WebTouchPoint* point =
&touch_event_.touches[touch_event_.touchesLength++];
point->state = WebKit::WebTouchPoint::StatePressed;
point->id = GetMappedTouch(touch_input->dwID);
UpdateTouchPoint(point, touch_input);
return point;
}
bool WebTouchState::UpdateTouchPoint(
WebKit::WebTouchPoint* touch_point,
TOUCHINPUT* touch_input) {
CPoint coordinates(
TOUCH_COORD_TO_PIXEL(touch_input->x) /
gfx::win::GetUndocumentedDPITouchScale(),
TOUCH_COORD_TO_PIXEL(touch_input->y) /
gfx::win::GetUndocumentedDPITouchScale());
int radius_x = 1;
int radius_y = 1;
if (touch_input->dwMask & TOUCHINPUTMASKF_CONTACTAREA) {
// Some touch drivers send a contact area of "-1", yet flag it as valid.
radius_x = std::max(1,
static_cast<int>(TOUCH_COORD_TO_PIXEL(touch_input->cxContact) /
gfx::win::GetUndocumentedDPITouchScale()));
radius_y = std::max(1,
static_cast<int>(TOUCH_COORD_TO_PIXEL(touch_input->cyContact) /
gfx::win::GetUndocumentedDPITouchScale()));
}
// Detect and exclude stationary moves.
if (GetTouchType(*touch_input) == TOUCHEVENTF_MOVE &&
touch_point->screenPosition.x == coordinates.x &&
touch_point->screenPosition.y == coordinates.y &&
touch_point->radiusX == radius_x &&
touch_point->radiusY == radius_y) {
touch_point->state = WebKit::WebTouchPoint::StateStationary;
return true;
}
touch_point->screenPosition.x = coordinates.x;
touch_point->screenPosition.y = coordinates.y;
window_->ScreenToClient(&coordinates);
static float scale = gfx::win::GetDeviceScaleFactor();
touch_point->position.x = coordinates.x / scale;
touch_point->position.y = coordinates.y / scale;
touch_point->radiusX = radius_x;
touch_point->radiusY = radius_y;
touch_point->force = 0;
touch_point->rotationAngle = 0;
return false;
}
// Find (or create) a mapping for _os_touch_id_.
unsigned int WebTouchState::GetMappedTouch(unsigned int os_touch_id) {
return id_generator_.GetGeneratedID(os_touch_id);
}
LRESULT RenderWidgetHostViewWin::OnTouchEvent(UINT message, WPARAM wparam,
LPARAM lparam, BOOL& handled) {
TRACE_EVENT0("browser", "RenderWidgetHostViewWin::OnTouchEvent");
// Finish the ongoing composition whenever a touch event happens.
// It matches IE's behavior.
if (base::win::IsTSFAwareRequired()) {
ui::TSFBridge::GetInstance()->CancelComposition();
} else {
imm32_manager_->CleanupComposition(m_hWnd);
}
// TODO(jschuh): Add support for an arbitrary number of touchpoints.
size_t total = std::min(static_cast<int>(LOWORD(wparam)),
static_cast<int>(WebKit::WebTouchEvent::touchesLengthCap));
TOUCHINPUT points[WebKit::WebTouchEvent::touchesLengthCap];
if (!total || !ui::GetTouchInputInfoWrapper((HTOUCHINPUT)lparam, total,
points, sizeof(TOUCHINPUT))) {
TRACE_EVENT0("browser", "EarlyOut_NothingToDo");
return 0;
}
if (total == 1 && (points[0].dwFlags & TOUCHEVENTF_DOWN)) {
pointer_down_context_ = true;
last_touch_location_ = gfx::Point(
TOUCH_COORD_TO_PIXEL(points[0].x) /
gfx::win::GetUndocumentedDPITouchScale(),
TOUCH_COORD_TO_PIXEL(points[0].y) /
gfx::win::GetUndocumentedDPITouchScale());
}
bool should_forward = render_widget_host_->ShouldForwardTouchEvent() &&
touch_events_enabled_;
// Send a copy of the touch events on to the gesture recognizer.
for (size_t start = 0; start < total;) {
start += touch_state_->UpdateTouchPoints(points + start, total - start);
if (should_forward) {
if (touch_state_->is_changed())
render_widget_host_->ForwardTouchEventWithLatencyInfo(
touch_state_->touch_event(), ui::LatencyInfo());
} else {
const WebKit::WebTouchEvent& touch_event = touch_state_->touch_event();
base::TimeDelta timestamp = base::TimeDelta::FromMilliseconds(
touch_event.timeStampSeconds * 1000);
for (size_t i = 0; i < touch_event.touchesLength; ++i) {
scoped_ptr<ui::GestureRecognizer::Gestures> gestures;
gestures.reset(gesture_recognizer_->ProcessTouchEventForGesture(
TouchEventFromWebTouchPoint(touch_event.touches[i], timestamp),
ui::ER_UNHANDLED, this));
ProcessGestures(gestures.get());
}
}
}
CloseTouchInputHandle((HTOUCHINPUT)lparam);
return 0;
}
void RenderWidgetHostViewWin::ProcessGestures(
ui::GestureRecognizer::Gestures* gestures) {
if ((gestures == NULL) || gestures->empty())
return;
for (ui::GestureRecognizer::Gestures::iterator g_it = gestures->begin();
g_it != gestures->end();
++g_it) {
ForwardGestureEventToRenderer(*g_it);
}
}
LRESULT RenderWidgetHostViewWin::OnMouseActivate(UINT message,
WPARAM wparam,
LPARAM lparam,
BOOL& handled) {
TRACE_EVENT0("browser", "RenderWidgetHostViewWin::OnMouseActivate");
if (!render_widget_host_)
return MA_NOACTIVATE;
if (!IsActivatable())
return MA_NOACTIVATE;
HWND focus_window = GetFocus();
if (!::IsWindow(focus_window) || !IsChild(focus_window)) {
// We handle WM_MOUSEACTIVATE to set focus to the underlying plugin
// child window. This is to ensure that keyboard events are received
// by the plugin. The correct way to fix this would be send over
// an event to the renderer which would then eventually send over
// a setFocus call to the plugin widget. This would ensure that
// the renderer (webkit) knows about the plugin widget receiving
// focus.
// TODO(iyengar) Do the right thing as per the above comment.
POINT cursor_pos = {0};
::GetCursorPos(&cursor_pos);
::ScreenToClient(m_hWnd, &cursor_pos);
HWND child_window = ::RealChildWindowFromPoint(m_hWnd, cursor_pos);
if (::IsWindow(child_window) && child_window != m_hWnd) {
if (gfx::GetClassName(child_window) == kWrapperNativeWindowClassName)
child_window = ::GetWindow(child_window, GW_CHILD);
::SetFocus(child_window);
return MA_NOACTIVATE;
}
}
handled = FALSE;
render_widget_host_->OnPointerEventActivate();
return MA_ACTIVATE;
}
LRESULT RenderWidgetHostViewWin::OnGestureEvent(
UINT message, WPARAM wparam, LPARAM lparam, BOOL& handled) {
TRACE_EVENT0("browser", "RenderWidgetHostViewWin::OnGestureEvent");
DCHECK(!touch_events_enabled_);
handled = FALSE;
GESTUREINFO gi = {sizeof(GESTUREINFO)};
HGESTUREINFO gi_handle = reinterpret_cast<HGESTUREINFO>(lparam);
if (!::GetGestureInfo(gi_handle, &gi)) {
DWORD error = GetLastError();
NOTREACHED() << "Unable to get gesture info. Error : " << error;
return 0;
}
if (gi.dwID == GID_ZOOM) {
PageZoom zoom = PAGE_ZOOM_RESET;
POINT zoom_center = {0};
if (DecodeZoomGesture(m_hWnd, gi, &zoom, &zoom_center)) {
handled = TRUE;
Send(new ViewMsg_ZoomFactor(render_widget_host_->GetRoutingID(),
zoom, zoom_center.x, zoom_center.y));
}
} else if (gi.dwID == GID_PAN) {
// Right now we only decode scroll gestures and we forward to the page
// as scroll events.
POINT start;
POINT delta;
if (DecodeScrollGesture(gi, &start, &delta)) {
handled = TRUE;
render_widget_host_->ForwardWheelEvent(
MakeFakeScrollWheelEvent(m_hWnd, start, delta));
}
}
::CloseGestureInfoHandle(gi_handle);
return 0;
}
LRESULT RenderWidgetHostViewWin::OnMoveOrSize(
UINT message, WPARAM wparam, LPARAM lparam, BOOL& handled) {
// Reset the cliping rectangle if the mouse is locked.
if (mouse_locked_) {
CRect rect;
GetWindowRect(&rect);
::ClipCursor(&rect);
}
return 0;
}
void RenderWidgetHostViewWin::OnAccessibilityEvents(
const std::vector<AccessibilityHostMsg_EventParams>& params) {
CreateBrowserAccessibilityManagerIfNeeded();
GetBrowserAccessibilityManager()->OnAccessibilityEvents(params);
}
bool RenderWidgetHostViewWin::LockMouse() {
if (mouse_locked_)
return true;
mouse_locked_ = true;
// Hide the tooltip window if it is currently visible. When the mouse is
// locked, no mouse message is relayed to the tooltip window, so we don't need
// to worry that it will reappear.
if (::IsWindow(tooltip_hwnd_) && tooltip_showing_) {
::SendMessage(tooltip_hwnd_, TTM_POP, 0, 0);
// Sending a TTM_POP message doesn't seem to actually hide the tooltip
// window, although we will receive a TTN_POP notification. As a result,
// ShowWindow() is explicitly called to hide the window.
::ShowWindow(tooltip_hwnd_, SW_HIDE);
}
// TODO(yzshen): ShowCursor(FALSE) causes SetCursorPos() to be ignored on
// Remote Desktop.
::ShowCursor(FALSE);
move_to_center_request_.pending = false;
last_mouse_position_.locked_global = last_mouse_position_.unlocked_global;
// Must set the clip rectangle before MoveCursorToCenterIfNecessary()
// so that if the cursor is moved it uses the clip rect set to the window
// rect. Otherwise, MoveCursorToCenterIfNecessary() may move the cursor
// to the center of the screen, and then we would clip to the window
// rect, thus moving the cursor and causing a movement delta.
CRect rect;
GetWindowRect(&rect);
::ClipCursor(&rect);
MoveCursorToCenterIfNecessary();
return true;
}
void RenderWidgetHostViewWin::UnlockMouse() {
if (!mouse_locked_)
return;
mouse_locked_ = false;
::ClipCursor(NULL);
::SetCursorPos(last_mouse_position_.unlocked_global.x(),
last_mouse_position_.unlocked_global.y());
::ShowCursor(TRUE);
if (render_widget_host_)
render_widget_host_->LostMouseLock();
}
void RenderWidgetHostViewWin::Observe(
int type,
const NotificationSource& source,
const NotificationDetails& details) {
DCHECK(type == NOTIFICATION_RENDERER_PROCESS_TERMINATED);
// Get the RenderProcessHost that posted this notification, and exit
// if it's not the one associated with this host view.
RenderProcessHost* render_process_host =
Source<RenderProcessHost>(source).ptr();
DCHECK(render_process_host);
if (!render_widget_host_ ||
render_process_host != render_widget_host_->GetProcess()) {
return;
}
// If it was our RenderProcessHost that posted the notification,
// clear the BrowserAccessibilityManager, because the renderer is
// dead and any accessibility information we have is now stale.
SetBrowserAccessibilityManager(NULL);
}
static void PaintCompositorHostWindow(HWND hWnd) {
PAINTSTRUCT paint;
BeginPaint(hWnd, &paint);
RenderWidgetHostViewWin* win = static_cast<RenderWidgetHostViewWin*>(
gfx::GetWindowUserData(hWnd));
// Trigger composite to rerender window.
if (win)
win->AcceleratedPaint(paint.hdc);
EndPaint(hWnd, &paint);
}
// WndProc for the compositor host window. We use this instead of Default so
// we can drop WM_PAINT and WM_ERASEBKGD messages on the floor.
static LRESULT CALLBACK CompositorHostWindowProc(HWND hWnd, UINT message,
WPARAM wParam, LPARAM lParam) {
switch (message) {
case WM_ERASEBKGND:
return 0;
case WM_PAINT:
PaintCompositorHostWindow(hWnd);
return 0;
default:
return DefWindowProc(hWnd, message, wParam, lParam);
}
}
void RenderWidgetHostViewWin::AcceleratedPaint(HDC dc) {
if (render_widget_host_)
render_widget_host_->ScheduleComposite();
if (accelerated_surface_)
accelerated_surface_->Present(dc);
}
void RenderWidgetHostViewWin::GetScreenInfo(WebKit::WebScreenInfo* results) {
GetScreenInfoForWindow(GetNativeViewId(), results);
}
gfx::Rect RenderWidgetHostViewWin::GetBoundsInRootWindow() {
RECT window_rect = {0};
HWND root_window = GetAncestor(m_hWnd, GA_ROOT);
::GetWindowRect(root_window, &window_rect);
gfx::Rect rect(window_rect);
// Maximized windows are outdented from the work area by the frame thickness
// even though this "frame" is not painted. This confuses code (and people)
// that think of a maximized window as corresponding exactly to the work area.
// Correct for this by subtracting the frame thickness back off.
if (::IsZoomed(root_window)) {
rect.Inset(GetSystemMetrics(SM_CXSIZEFRAME),
GetSystemMetrics(SM_CYSIZEFRAME));
}
return gfx::win::ScreenToDIPRect(rect);
}
// Creates a HWND within the RenderWidgetHostView that will serve as a host
// for a HWND that the GPU process will create. The host window is used
// to Z-position the GPU's window relative to other plugin windows.
gfx::GLSurfaceHandle RenderWidgetHostViewWin::GetCompositingSurface() {
// If the window has been created, don't recreate it a second time
if (compositor_host_window_)
return gfx::GLSurfaceHandle(compositor_host_window_, gfx::NATIVE_TRANSPORT);
// On Vista and later we present directly to the view window rather than a
// child window.
if (GpuDataManagerImpl::GetInstance()->IsUsingAcceleratedSurface()) {
if (!accelerated_surface_)
accelerated_surface_.reset(new AcceleratedSurface(m_hWnd));
return gfx::GLSurfaceHandle(m_hWnd, gfx::NATIVE_TRANSPORT);
}
// On XP we need a child window that can be resized independently of the
// parent.
static ATOM atom = 0;
static HMODULE instance = NULL;
if (!atom) {
WNDCLASSEX window_class;
base::win::InitializeWindowClass(
L"CompositorHostWindowClass",
&base::win::WrappedWindowProc<CompositorHostWindowProc>,
0, 0, 0, NULL, NULL, NULL, NULL, NULL,
&window_class);
instance = window_class.hInstance;
atom = RegisterClassEx(&window_class);
DCHECK(atom);
}
RECT currentRect;
GetClientRect(&currentRect);
// Ensure window does not have zero area because D3D cannot create a zero
// area swap chain.
int width = std::max(1,
static_cast<int>(currentRect.right - currentRect.left));
int height = std::max(1,
static_cast<int>(currentRect.bottom - currentRect.top));
compositor_host_window_ = CreateWindowEx(
WS_EX_LEFT | WS_EX_LTRREADING | WS_EX_RIGHTSCROLLBAR,
MAKEINTATOM(atom), 0,
WS_CHILD | WS_CLIPCHILDREN | WS_CLIPSIBLINGS | WS_DISABLED,
0, 0, width, height, m_hWnd, 0, instance, 0);
gfx::CheckWindowCreated(compositor_host_window_);
gfx::SetWindowUserData(compositor_host_window_, this);
gfx::GLSurfaceHandle surface_handle(compositor_host_window_,
gfx::NATIVE_TRANSPORT);
return surface_handle;
}
void RenderWidgetHostViewWin::ResizeCompositingSurface(const gfx::Size& size) {
// Ensure window does not have zero area because D3D cannot create a zero
// area swap chain.
::SetWindowPos(compositor_host_window_,
NULL,
0, 0,
std::max(1, size.width()),
std::max(1, size.height()),
SWP_NOSENDCHANGING | SWP_NOCOPYBITS | SWP_NOZORDER |
SWP_NOACTIVATE | SWP_DEFERERASE | SWP_NOMOVE);
}
void RenderWidgetHostViewWin::OnAcceleratedCompositingStateChange() {
bool show = render_widget_host_->is_accelerated_compositing_active();
// When we first create the compositor, we will get a show request from
// the renderer before we have gotten the create request from the GPU. In this
// case, simply ignore the show request.
if (compositor_host_window_ == NULL)
return;
if (show) {
::ShowWindow(compositor_host_window_, SW_SHOW);
// Get all the child windows of this view, including the compositor window.
std::vector<HWND> all_child_windows;
::EnumChildWindows(m_hWnd, AddChildWindowToVector,
reinterpret_cast<LPARAM>(&all_child_windows));
// Build a list of just the plugin window handles
std::vector<HWND> plugin_windows;
bool compositor_host_window_found = false;
for (size_t i = 0; i < all_child_windows.size(); ++i) {
if (all_child_windows[i] != compositor_host_window_)
plugin_windows.push_back(all_child_windows[i]);
else
compositor_host_window_found = true;
}
DCHECK(compositor_host_window_found);
// Set all the plugin windows to be "after" the compositor window.
// When the compositor window is created, gets placed above plugins.
for (size_t i = 0; i < plugin_windows.size(); ++i) {
HWND next;
if (i + 1 < plugin_windows.size())
next = plugin_windows[i+1];
else
next = compositor_host_window_;
::SetWindowPos(plugin_windows[i], next, 0, 0, 0, 0,
SWP_NOSIZE | SWP_NOMOVE | SWP_NOACTIVATE);
}
} else {
// Drop the backing store for the accelerated surface when the accelerated
// compositor is disabled. Otherwise, a flash of the last presented frame
// could appear when it is next enabled.
if (accelerated_surface_)
accelerated_surface_->Suspend();
hide_compositor_window_at_next_paint_ = true;
}
}
void RenderWidgetHostViewWin::AcceleratedSurfaceBuffersSwapped(
const GpuHostMsg_AcceleratedSurfaceBuffersSwapped_Params& params,
int gpu_host_id) {
NOTREACHED();
}
void RenderWidgetHostViewWin::AcceleratedSurfacePostSubBuffer(
const GpuHostMsg_AcceleratedSurfacePostSubBuffer_Params& params,
int gpu_host_id) {
NOTREACHED();
}
void RenderWidgetHostViewWin::AcceleratedSurfaceSuspend() {
if (!accelerated_surface_)
return;
accelerated_surface_->Suspend();
}
void RenderWidgetHostViewWin::AcceleratedSurfaceRelease() {
}
bool RenderWidgetHostViewWin::HasAcceleratedSurface(
const gfx::Size& desired_size) {
// TODO(jbates) Implement this so this view can use GetBackingStore for both
// software and GPU frames. Defaulting to false just makes GetBackingStore
// only useable for software frames.
return false;
}
void RenderWidgetHostViewWin::SetAccessibilityFocus(int acc_obj_id) {
if (!render_widget_host_)
return;
render_widget_host_->AccessibilitySetFocus(acc_obj_id);
}
void RenderWidgetHostViewWin::AccessibilityDoDefaultAction(int acc_obj_id) {
if (!render_widget_host_)
return;
render_widget_host_->AccessibilityDoDefaultAction(acc_obj_id);
}
void RenderWidgetHostViewWin::AccessibilityScrollToMakeVisible(
int acc_obj_id, gfx::Rect subfocus) {
if (!render_widget_host_)
return;
render_widget_host_->AccessibilityScrollToMakeVisible(acc_obj_id, subfocus);
}
void RenderWidgetHostViewWin::AccessibilityScrollToPoint(
int acc_obj_id, gfx::Point point) {
if (!render_widget_host_)
return;
render_widget_host_->AccessibilityScrollToPoint(acc_obj_id, point);
}
void RenderWidgetHostViewWin::AccessibilitySetTextSelection(
int acc_obj_id, int start_offset, int end_offset) {
if (!render_widget_host_)
return;
render_widget_host_->AccessibilitySetTextSelection(
acc_obj_id, start_offset, end_offset);
}
gfx::Point RenderWidgetHostViewWin::GetLastTouchEventLocation() const {
return last_touch_location_;
}
void RenderWidgetHostViewWin::FatalAccessibilityTreeError() {
render_widget_host_->FatalAccessibilityTreeError();
SetBrowserAccessibilityManager(NULL);
}
LRESULT RenderWidgetHostViewWin::OnGetObject(UINT message, WPARAM wparam,
LPARAM lparam, BOOL& handled) {
TRACE_EVENT0("browser", "RenderWidgetHostViewWin::OnGetObject");
if (kIdCustom == lparam) {
// An MSAA client requestes our custom id. Assume that we have detected an
// active windows screen reader.
BrowserAccessibilityState::GetInstance()->OnScreenReaderDetected();
render_widget_host_->SetAccessibilityMode(
BrowserAccessibilityStateImpl::GetInstance()->accessibility_mode());
// Return with failure.
return static_cast<LRESULT>(0L);
}
if (lparam != OBJID_CLIENT) {
handled = false;
return static_cast<LRESULT>(0L);
}
IAccessible* iaccessible = GetNativeViewAccessible();
if (iaccessible)
return LresultFromObject(IID_IAccessible, wparam, iaccessible);
handled = false;
return static_cast<LRESULT>(0L);
}
LRESULT RenderWidgetHostViewWin::OnParentNotify(UINT message, WPARAM wparam,
LPARAM lparam, BOOL& handled) {
TRACE_EVENT0("browser", "RenderWidgetHostViewWin::OnParentNotify");
handled = FALSE;
if (!render_widget_host_)
return 0;
switch (LOWORD(wparam)) {
case WM_LBUTTONDOWN:
case WM_RBUTTONDOWN:
case WM_MBUTTONDOWN:
render_widget_host_->StartUserGesture();
break;
default:
break;
}
return 0;
}
void RenderWidgetHostViewWin::OnFinalMessage(HWND window) {
TRACE_EVENT0("browser", "RenderWidgetHostViewWin::OnFinalMessage");
// When the render widget host is being destroyed, it ends up calling
// Destroy() which NULLs render_widget_host_.
// Note: the following bug http://crbug.com/24248 seems to report that
// OnFinalMessage is called with a deleted |render_widget_host_|. It is not
// clear how this could happen, hence the NULLing of render_widget_host_
// above.
if (!render_widget_host_ && !being_destroyed_) {
// If you hit this NOTREACHED, please add a comment to report it on
// http://crbug.com/24248, including what you did when it happened and if
// you can repro.
NOTREACHED();
}
if (render_widget_host_)
render_widget_host_->ViewDestroyed();
if (base::win::IsTSFAwareRequired())
ui::TSFBridge::GetInstance()->RemoveFocusedClient(this);
delete this;
}
LRESULT RenderWidgetHostViewWin::OnSessionChange(UINT message,
WPARAM wparam,
LPARAM lparam,
BOOL& handled) {
handled = FALSE;
TRACE_EVENT0("browser", "RenderWidgetHostViewWin::OnSessionChange");
if (!accelerated_surface_)
return 0;
switch (wparam) {
case WTS_SESSION_LOCK:
accelerated_surface_->SetIsSessionLocked(true);
break;
case WTS_SESSION_UNLOCK:
// Force a repaint to update the window contents.
if (!render_widget_host_->is_hidden())
InvalidateRect(NULL, FALSE);
accelerated_surface_->SetIsSessionLocked(false);
break;
default:
break;
}
return 0;
}
void RenderWidgetHostViewWin::TrackMouseLeave(bool track) {
if (track == track_mouse_leave_)
return;
track_mouse_leave_ = track;
DCHECK(m_hWnd);
TRACKMOUSEEVENT tme;
tme.cbSize = sizeof(TRACKMOUSEEVENT);
tme.dwFlags = TME_LEAVE;
if (!track_mouse_leave_)
tme.dwFlags |= TME_CANCEL;
tme.hwndTrack = m_hWnd;
TrackMouseEvent(&tme);
}
bool RenderWidgetHostViewWin::Send(IPC::Message* message) {
if (!render_widget_host_)
return false;
return render_widget_host_->Send(message);
}
void RenderWidgetHostViewWin::EnsureTooltip() {
UINT message = TTM_NEWTOOLRECT;
TOOLINFO ti = {0};
ti.cbSize = sizeof(ti);
ti.hwnd = m_hWnd;
ti.uId = 0;
if (!::IsWindow(tooltip_hwnd_)) {
message = TTM_ADDTOOL;
tooltip_hwnd_ = CreateWindowEx(
WS_EX_TRANSPARENT | l10n_util::GetExtendedTooltipStyles(),
TOOLTIPS_CLASS, NULL, TTS_NOPREFIX, 0, 0, 0, 0, m_hWnd, NULL,
NULL, NULL);
if (!tooltip_hwnd_) {
// Tooltip creation can inexplicably fail. See bug 82913 for details.
LOG_GETLASTERROR(WARNING) <<
"Tooltip creation failed, tooltips won't work";
return;
}
ti.uFlags = TTF_TRANSPARENT;
ti.lpszText = LPSTR_TEXTCALLBACK;
// Ensure web content tooltips are displayed for at least this amount of
// time, to give users a chance to read longer messages.
const int kMinimumAutopopDurationMs = 10 * 1000;
int autopop_duration_ms =
SendMessage(tooltip_hwnd_, TTM_GETDELAYTIME, TTDT_AUTOPOP, NULL);
if (autopop_duration_ms < kMinimumAutopopDurationMs) {
SendMessage(tooltip_hwnd_, TTM_SETDELAYTIME, TTDT_AUTOPOP,
kMinimumAutopopDurationMs);
}
}
CRect cr;
GetClientRect(&ti.rect);
SendMessage(tooltip_hwnd_, message, NULL, reinterpret_cast<LPARAM>(&ti));
}
void RenderWidgetHostViewWin::ResetTooltip() {
if (::IsWindow(tooltip_hwnd_))
::DestroyWindow(tooltip_hwnd_);
tooltip_hwnd_ = NULL;
}
bool RenderWidgetHostViewWin::ForwardGestureEventToRenderer(
ui::GestureEvent* gesture) {
if (!render_widget_host_)
return false;
// Pinch gestures are disabled by default on windows desktop. See
// crbug.com/128477 and crbug.com/148816
if ((gesture->type() == ui::ET_GESTURE_PINCH_BEGIN ||
gesture->type() == ui::ET_GESTURE_PINCH_UPDATE ||
gesture->type() == ui::ET_GESTURE_PINCH_END) &&
!ShouldSendPinchGesture()) {
return true;
}
WebKit::WebGestureEvent web_gesture = CreateWebGestureEvent(m_hWnd, *gesture);
if (web_gesture.type == WebKit::WebGestureEvent::Undefined)
return false;
if (web_gesture.type == WebKit::WebGestureEvent::GestureTapDown) {
render_widget_host_->ForwardGestureEvent(
CreateFlingCancelEvent(gesture->time_stamp().InSecondsF()));
}
render_widget_host_->ForwardGestureEventWithLatencyInfo(web_gesture,
*gesture->latency());
return true;
}
void RenderWidgetHostViewWin::ForwardMouseEventToRenderer(UINT message,
WPARAM wparam,
LPARAM lparam) {
TRACE_EVENT0("browser",
"RenderWidgetHostViewWin::ForwardMouseEventToRenderer");
if (!render_widget_host_) {
TRACE_EVENT0("browser", "EarlyOut_NoRWH");
return;
}
gfx::Point point = gfx::win::ScreenToDIPPoint(
gfx::Point(static_cast<short>(LOWORD(lparam)),
static_cast<short>(HIWORD(lparam))));
lparam = MAKELPARAM(point.x(), point.y());
WebMouseEvent event(
WebMouseEventBuilder::Build(m_hWnd, message, wparam, lparam));
if (mouse_locked_) {
event.movementX = event.globalX - last_mouse_position_.locked_global.x();
event.movementY = event.globalY - last_mouse_position_.locked_global.y();
last_mouse_position_.locked_global.SetPoint(event.globalX, event.globalY);
event.x = last_mouse_position_.unlocked.x();
event.y = last_mouse_position_.unlocked.y();
event.windowX = last_mouse_position_.unlocked.x();
event.windowY = last_mouse_position_.unlocked.y();
event.globalX = last_mouse_position_.unlocked_global.x();
event.globalY = last_mouse_position_.unlocked_global.y();
} else {
if (ignore_mouse_movement_) {
ignore_mouse_movement_ = false;
event.movementX = 0;
event.movementY = 0;
} else {
event.movementX =
event.globalX - last_mouse_position_.unlocked_global.x();
event.movementY =
event.globalY - last_mouse_position_.unlocked_global.y();
}
last_mouse_position_.unlocked.SetPoint(event.windowX, event.windowY);
last_mouse_position_.unlocked_global.SetPoint(event.globalX, event.globalY);
}
// Windows sends (fake) mouse messages for touch events. Don't send these to
// the render widget.
if (!touch_events_enabled_ || !ui::IsMouseEventFromTouch(message)) {
// Send the event to the renderer before changing mouse capture, so that
// the capturelost event arrives after mouseup.
render_widget_host_->ForwardMouseEvent(event);
switch (event.type) {
case WebInputEvent::MouseMove:
TrackMouseLeave(true);
break;
case WebInputEvent::MouseLeave:
TrackMouseLeave(false);
break;
case WebInputEvent::MouseDown:
SetCapture();
break;
case WebInputEvent::MouseUp:
if (GetCapture() == m_hWnd)
ReleaseCapture();
break;
}
}
if (IsActivatable() && event.type == WebInputEvent::MouseDown) {
// This is a temporary workaround for bug 765011 to get focus when the
// mouse is clicked. This happens after the mouse down event is sent to
// the renderer because normally Windows does a WM_SETFOCUS after
// WM_LBUTTONDOWN.
SetFocus();
}
}
void RenderWidgetHostViewWin::ShutdownHost() {
weak_factory_.InvalidateWeakPtrs();
if (render_widget_host_)
render_widget_host_->Shutdown();
// Do not touch any members at this point, |this| has been deleted.
}
void RenderWidgetHostViewWin::DoPopupOrFullscreenInit(HWND parent_hwnd,
const gfx::Rect& pos,
DWORD ex_style) {
Create(parent_hwnd, NULL, NULL, WS_POPUP, ex_style);
gfx::Rect screen_rect = gfx::win::DIPToScreenRect(pos);
MoveWindow(screen_rect.x(), screen_rect.y(), screen_rect.width(),
screen_rect.height(), TRUE);
ShowWindow(IsActivatable() ? SW_SHOW : SW_SHOWNA);
if (is_fullscreen_ && win8::IsSingleWindowMetroMode()) {
MetroSetFrameWindow set_frame_window =
reinterpret_cast<MetroSetFrameWindow>(
::GetProcAddress(base::win::GetMetroModule(), "SetFrameWindow"));
DCHECK(set_frame_window);
set_frame_window(m_hWnd);
}
}
CPoint RenderWidgetHostViewWin::GetClientCenter() const {
CRect rect;
GetClientRect(&rect);
return rect.CenterPoint();
}
void RenderWidgetHostViewWin::MoveCursorToCenterIfNecessary() {
DCHECK(mouse_locked_);
CRect rect;
GetClipCursor(&rect);
int border_x = rect.Width() * kMouseLockBorderPercentage / 100;
int border_y = rect.Height() * kMouseLockBorderPercentage / 100;
bool should_move =
last_mouse_position_.locked_global.x() < rect.left + border_x ||
last_mouse_position_.locked_global.x() > rect.right - border_x ||
last_mouse_position_.locked_global.y() < rect.top + border_y ||
last_mouse_position_.locked_global.y() > rect.bottom - border_y;
if (should_move) {
move_to_center_request_.pending = true;
move_to_center_request_.target = rect.CenterPoint();
if (!::SetCursorPos(move_to_center_request_.target.x(),
move_to_center_request_.target.y())) {
LOG_GETLASTERROR(WARNING) << "Failed to set cursor position.";
}
}
}
void RenderWidgetHostViewWin::HandleLockedMouseEvent(UINT message,
WPARAM wparam,
LPARAM lparam) {
TRACE_EVENT0("browser", "RenderWidgetHostViewWin::HandleLockedMouseEvent");
DCHECK(mouse_locked_);
if (message == WM_MOUSEMOVE && move_to_center_request_.pending) {
// Ignore WM_MOUSEMOVE messages generated by
// MoveCursorToCenterIfNecessary().
CPoint current_position(LOWORD(lparam), HIWORD(lparam));
ClientToScreen(&current_position);
if (move_to_center_request_.target.x() == current_position.x &&
move_to_center_request_.target.y() == current_position.y) {
move_to_center_request_.pending = false;
last_mouse_position_.locked_global = move_to_center_request_.target;
return;
}
}
ForwardMouseEventToRenderer(message, wparam, lparam);
}
LRESULT RenderWidgetHostViewWin::OnDocumentFeed(RECONVERTSTRING* reconv) {
size_t target_offset;
size_t target_length;
bool has_composition;
if (!composition_range_.is_empty()) {
target_offset = composition_range_.GetMin();
target_length = composition_range_.length();
has_composition = true;
} else if (selection_range_.IsValid()) {
target_offset = selection_range_.GetMin();
target_length = selection_range_.length();
has_composition = false;
} else {
return 0;
}
size_t len = selection_text_.length();
size_t need_size = sizeof(RECONVERTSTRING) + len * sizeof(WCHAR);
if (target_offset < selection_text_offset_ ||
target_offset + target_length > selection_text_offset_ + len) {
return 0;
}
if (!reconv)
return need_size;
if (reconv->dwSize < need_size)
return 0;
reconv->dwVersion = 0;
reconv->dwStrLen = len;
reconv->dwStrOffset = sizeof(RECONVERTSTRING);
reconv->dwCompStrLen = has_composition ? target_length: 0;
reconv->dwCompStrOffset =
(target_offset - selection_text_offset_) * sizeof(WCHAR);
reconv->dwTargetStrLen = target_length;
reconv->dwTargetStrOffset = reconv->dwCompStrOffset;
memcpy(reinterpret_cast<char*>(reconv) + sizeof(RECONVERTSTRING),
selection_text_.c_str(), len * sizeof(WCHAR));
// According to Microsft API document, IMR_RECONVERTSTRING and
// IMR_DOCUMENTFEED should return reconv, but some applications return
// need_size.
return reinterpret_cast<LRESULT>(reconv);
}
LRESULT RenderWidgetHostViewWin::OnReconvertString(RECONVERTSTRING* reconv) {
// If there is a composition string already, we don't allow reconversion.
if (imm32_manager_->is_composing())
return 0;
if (selection_range_.is_empty())
return 0;
if (selection_text_.empty())
return 0;
if (selection_range_.GetMin() < selection_text_offset_ ||
selection_range_.GetMax() >
selection_text_offset_ + selection_text_.length()) {
return 0;
}
size_t len = selection_range_.length();
size_t need_size = sizeof(RECONVERTSTRING) + len * sizeof(WCHAR);
if (!reconv)
return need_size;
if (reconv->dwSize < need_size)
return 0;
reconv->dwVersion = 0;
reconv->dwStrLen = len;
reconv->dwStrOffset = sizeof(RECONVERTSTRING);
reconv->dwCompStrLen = len;
reconv->dwCompStrOffset = 0;
reconv->dwTargetStrLen = len;
reconv->dwTargetStrOffset = 0;
size_t offset = selection_range_.GetMin() - selection_text_offset_;
memcpy(reinterpret_cast<char*>(reconv) + sizeof(RECONVERTSTRING),
selection_text_.c_str() + offset, len * sizeof(WCHAR));
// According to Microsft API document, IMR_RECONVERTSTRING and
// IMR_DOCUMENTFEED should return reconv, but some applications return
// need_size.
return reinterpret_cast<LRESULT>(reconv);
}
LRESULT RenderWidgetHostViewWin::OnQueryCharPosition(
IMECHARPOSITION* position) {
DCHECK(position);
if (position->dwSize < sizeof(IMECHARPOSITION))
return 0;
RECT target_rect = {};
if (imm32_manager_->is_composing() && !composition_range_.is_empty() &&
position->dwCharPos < composition_character_bounds_.size()) {
target_rect =
composition_character_bounds_[position->dwCharPos].ToRECT();
} else if (position->dwCharPos == 0) {
// When there is no on-going composition but |position->dwCharPos| is 0,
// use the caret rect. This behavior is the same to RichEdit. In fact,
// CUAS (Cicero Unaware Application Support) relies on this behavior to
// implement ITfContextView::GetTextExt on top of IMM32-based applications.
target_rect = caret_rect_.ToRECT();
} else {
return 0;
}
ClientToScreen(&target_rect);
RECT document_rect = GetPixelBounds().ToRECT();
ClientToScreen(&document_rect);
position->pt.x = target_rect.left;
position->pt.y = target_rect.top;
position->cLineHeight = target_rect.bottom - target_rect.top;
position->rcDocument = document_rect;
return 1;
}
void RenderWidgetHostViewWin::UpdateIMEState() {
if (base::win::IsTSFAwareRequired()) {
ui::TSFBridge::GetInstance()->OnTextInputTypeChanged(this);
return;
}
if (text_input_type_ != ui::TEXT_INPUT_TYPE_NONE &&
text_input_type_ != ui::TEXT_INPUT_TYPE_PASSWORD) {
imm32_manager_->EnableIME(m_hWnd);
imm32_manager_->SetUseCompositionWindow(!can_compose_inline_);
} else {
imm32_manager_->DisableIME(m_hWnd);
}
imm32_manager_->SetTextInputMode(m_hWnd, text_input_mode_);
}
void RenderWidgetHostViewWin::UpdateInputScopeIfNecessary(
ui::TextInputType text_input_type) {
// The text store is responsible for handling input scope when TSF-aware is
// required.
if (base::win::IsTSFAwareRequired())
return;
ui::tsf_inputscope::SetInputScopeForTsfUnawareWindow(
m_hWnd, text_input_type, text_input_mode_);
}
////////////////////////////////////////////////////////////////////////////////
// RenderWidgetHostView, public:
// static
RenderWidgetHostView* RenderWidgetHostView::CreateViewForWidget(
RenderWidgetHost* widget) {
return new RenderWidgetHostViewWin(widget);
}
// static
void RenderWidgetHostViewPort::GetDefaultScreenInfo(
WebKit::WebScreenInfo* results) {
GetScreenInfoForWindow(0, results);
}
} // namespace content