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android / platform / external / chromium_org / 1e9bf3e / . / chrome / browser / ui / gtk / tabs / tab_renderer_gtk.cc
blob: ba121dba288e3cafd9a772153e7ded3d694a6879 [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 "chrome/browser/ui/gtk/tabs/tab_renderer_gtk.h"
#include <algorithm>
#include <utility>
#include "base/debug/trace_event.h"
#include "base/strings/utf_string_conversions.h"
#include "chrome/browser/chrome_notification_types.h"
#include "chrome/browser/defaults.h"
#include "chrome/browser/extensions/tab_helper.h"
#include "chrome/browser/favicon/favicon_tab_helper.h"
#include "chrome/browser/profiles/profile.h"
#include "chrome/browser/themes/theme_properties.h"
#include "chrome/browser/ui/browser.h"
#include "chrome/browser/ui/gtk/bookmarks/bookmark_utils_gtk.h"
#include "chrome/browser/ui/gtk/custom_button.h"
#include "chrome/browser/ui/gtk/gtk_theme_service.h"
#include "chrome/browser/ui/gtk/gtk_util.h"
#include "chrome/browser/ui/tab_contents/core_tab_helper.h"
#include "chrome/browser/ui/tabs/tab_utils.h"
#include "content/public/browser/notification_source.h"
#include "content/public/browser/web_contents.h"
#include "grit/generated_resources.h"
#include "grit/theme_resources.h"
#include "grit/ui_resources.h"
#include "skia/ext/image_operations.h"
#include "ui/base/gtk/gtk_screen_util.h"
#include "ui/base/l10n/l10n_util.h"
#include "ui/base/resource/resource_bundle.h"
#include "ui/gfx/animation/slide_animation.h"
#include "ui/gfx/animation/throb_animation.h"
#include "ui/gfx/canvas_skia_paint.h"
#include "ui/gfx/favicon_size.h"
#include "ui/gfx/gtk_compat.h"
#include "ui/gfx/gtk_util.h"
#include "ui/gfx/image/cairo_cached_surface.h"
#include "ui/gfx/image/image.h"
#include "ui/gfx/pango_util.h"
#include "ui/gfx/platform_font_pango.h"
#include "ui/gfx/skbitmap_operations.h"
using content::WebContents;
namespace {
const int kFontPixelSize = 12;
const int kLeftPadding = 16;
const int kTopPadding = 6;
const int kRightPadding = 15;
const int kBottomPadding = 5;
const int kFaviconTitleSpacing = 4;
const int kTitleCloseButtonSpacing = 5;
const int kStandardTitleWidth = 175;
const int kDropShadowOffset = 2;
const int kInactiveTabBackgroundOffsetY = 15;
// When a non-mini-tab becomes a mini-tab the width of the tab animates. If
// the width of a mini-tab is >= kMiniTabRendererAsNormalTabWidth then the tab
// is rendered as a normal tab. This is done to avoid having the title
// immediately disappear when transitioning a tab from normal to mini-tab.
const int kMiniTabRendererAsNormalTabWidth =
browser_defaults::kMiniTabWidth + 30;
// The tab images are designed to overlap the toolbar by 1 pixel. For now we
// don't actually overlap the toolbar, so this is used to know how many pixels
// at the bottom of the tab images are to be ignored.
const int kToolbarOverlap = 1;
// How long the hover state takes.
const int kHoverDurationMs = 90;
// How opaque to make the hover state (out of 1).
const double kHoverOpacity = 0.33;
// Opacity for non-active selected tabs.
const double kSelectedTabOpacity = 0.45;
// Selected (but not active) tabs have their throb value scaled down by this.
const double kSelectedTabThrobScale = 0.5;
// Max opacity for the mini-tab title change animation.
const double kMiniTitleChangeThrobOpacity = 0.75;
// Duration for when the title of an inactive mini-tab changes.
const int kMiniTitleChangeThrobDuration = 1000;
// The horizontal offset used to position the close button in the tab.
const int kCloseButtonHorzFuzz = 4;
// Gets the bounds of |widget| relative to |parent|.
gfx::Rect GetWidgetBoundsRelativeToParent(GtkWidget* parent,
GtkWidget* widget) {
gfx::Rect bounds = ui::GetWidgetScreenBounds(widget);
bounds.Offset(-ui::GetWidgetScreenOffset(parent));
return bounds;
}
// Returns a GdkPixbuf after resizing the SkBitmap as necessary to the
// specified desired width and height. Caller must g_object_unref the returned
// pixbuf when no longer used.
GdkPixbuf* GetResizedGdkPixbufFromSkBitmap(const SkBitmap& bitmap,
int dest_w,
int dest_h) {
float float_dest_w = static_cast<float>(dest_w);
float float_dest_h = static_cast<float>(dest_h);
int bitmap_w = bitmap.width();
int bitmap_h = bitmap.height();
// Scale proportionately.
float scale = std::min(float_dest_w / bitmap_w,
float_dest_h / bitmap_h);
int final_dest_w = static_cast<int>(bitmap_w * scale);
int final_dest_h = static_cast<int>(bitmap_h * scale);
GdkPixbuf* pixbuf;
if (final_dest_w == bitmap_w && final_dest_h == bitmap_h) {
pixbuf = gfx::GdkPixbufFromSkBitmap(bitmap);
} else {
SkBitmap resized_icon = skia::ImageOperations::Resize(
bitmap,
skia::ImageOperations::RESIZE_BETTER,
final_dest_w, final_dest_h);
pixbuf = gfx::GdkPixbufFromSkBitmap(resized_icon);
}
return pixbuf;
}
} // namespace
TabRendererGtk::LoadingAnimation::Data::Data(
GtkThemeService* theme_service) {
// The loading animation image is a strip of states. Each state must be
// square, so the height must divide the width evenly.
SkBitmap loading_animation_frames =
theme_service->GetImageNamed(IDR_THROBBER).AsBitmap();
DCHECK(!loading_animation_frames.isNull());
DCHECK_EQ(loading_animation_frames.width() %
loading_animation_frames.height(), 0);
loading_animation_frame_count =
loading_animation_frames.width() /
loading_animation_frames.height();
SkBitmap waiting_animation_frames =
theme_service->GetImageNamed(IDR_THROBBER_WAITING).AsBitmap();
DCHECK(!waiting_animation_frames.isNull());
DCHECK_EQ(waiting_animation_frames.width() %
waiting_animation_frames.height(), 0);
waiting_animation_frame_count =
waiting_animation_frames.width() /
waiting_animation_frames.height();
waiting_to_loading_frame_count_ratio =
waiting_animation_frame_count /
loading_animation_frame_count;
// TODO(beng): eventually remove this when we have a proper themeing system.
// themes not supporting IDR_THROBBER_WAITING are causing this
// value to be 0 which causes DIV0 crashes. The value of 5
// matches the current bitmaps in our source.
if (waiting_to_loading_frame_count_ratio == 0)
waiting_to_loading_frame_count_ratio = 5;
}
TabRendererGtk::LoadingAnimation::Data::Data(
int loading, int waiting, int waiting_to_loading)
: loading_animation_frame_count(loading),
waiting_animation_frame_count(waiting),
waiting_to_loading_frame_count_ratio(waiting_to_loading) {
}
bool TabRendererGtk::initialized_ = false;
int TabRendererGtk::tab_active_l_width_ = 0;
int TabRendererGtk::tab_active_l_height_ = 0;
int TabRendererGtk::tab_inactive_l_height_ = 0;
gfx::Font* TabRendererGtk::title_font_ = NULL;
int TabRendererGtk::title_font_height_ = 0;
int TabRendererGtk::close_button_width_ = 0;
int TabRendererGtk::close_button_height_ = 0;
////////////////////////////////////////////////////////////////////////////////
// TabRendererGtk::LoadingAnimation, public:
//
TabRendererGtk::LoadingAnimation::LoadingAnimation(
GtkThemeService* theme_service)
: data_(new Data(theme_service)),
theme_service_(theme_service),
animation_state_(ANIMATION_NONE),
animation_frame_(0) {
registrar_.Add(this,
chrome::NOTIFICATION_BROWSER_THEME_CHANGED,
content::Source<ThemeService>(theme_service_));
}
TabRendererGtk::LoadingAnimation::LoadingAnimation(
const LoadingAnimation::Data& data)
: data_(new Data(data)),
theme_service_(NULL),
animation_state_(ANIMATION_NONE),
animation_frame_(0) {
}
TabRendererGtk::LoadingAnimation::~LoadingAnimation() {}
bool TabRendererGtk::LoadingAnimation::ValidateLoadingAnimation(
AnimationState animation_state) {
bool has_changed = false;
if (animation_state_ != animation_state) {
// The waiting animation is the reverse of the loading animation, but at a
// different rate - the following reverses and scales the animation_frame_
// so that the frame is at an equivalent position when going from one
// animation to the other.
if (animation_state_ == ANIMATION_WAITING &&
animation_state == ANIMATION_LOADING) {
animation_frame_ = data_->loading_animation_frame_count -
(animation_frame_ / data_->waiting_to_loading_frame_count_ratio);
}
animation_state_ = animation_state;
has_changed = true;
}
if (animation_state_ != ANIMATION_NONE) {
animation_frame_ = (animation_frame_ + 1) %
((animation_state_ == ANIMATION_WAITING) ?
data_->waiting_animation_frame_count :
data_->loading_animation_frame_count);
has_changed = true;
} else {
animation_frame_ = 0;
}
return has_changed;
}
void TabRendererGtk::LoadingAnimation::Observe(
int type,
const content::NotificationSource& source,
const content::NotificationDetails& details) {
DCHECK(type == chrome::NOTIFICATION_BROWSER_THEME_CHANGED);
data_.reset(new Data(theme_service_));
}
TabRendererGtk::TabData::TabData()
: is_default_favicon(false),
loading(false),
crashed(false),
incognito(false),
show_icon(true),
mini(false),
blocked(false),
animating_mini_change(false),
app(false),
media_state(TAB_MEDIA_STATE_NONE),
previous_media_state(TAB_MEDIA_STATE_NONE) {
}
TabRendererGtk::TabData::~TabData() {}
////////////////////////////////////////////////////////////////////////////////
// FaviconCrashAnimation
//
// A custom animation subclass to manage the favicon crash animation.
class TabRendererGtk::FaviconCrashAnimation : public gfx::LinearAnimation,
public gfx::AnimationDelegate {
public:
explicit FaviconCrashAnimation(TabRendererGtk* target)
: gfx::LinearAnimation(1000, 25, this),
target_(target) {
}
virtual ~FaviconCrashAnimation() {}
// gfx::Animation overrides:
virtual void AnimateToState(double state) OVERRIDE {
const double kHidingOffset = 27;
if (state < .5) {
target_->SetFaviconHidingOffset(
static_cast<int>(floor(kHidingOffset * 2.0 * state)));
} else {
target_->DisplayCrashedFavicon();
target_->SetFaviconHidingOffset(
static_cast<int>(
floor(kHidingOffset - ((state - .5) * 2.0 * kHidingOffset))));
}
}
// gfx::AnimationDelegate overrides:
virtual void AnimationCanceled(const gfx::Animation* animation) OVERRIDE {
target_->SetFaviconHidingOffset(0);
}
private:
TabRendererGtk* target_;
DISALLOW_COPY_AND_ASSIGN(FaviconCrashAnimation);
};
////////////////////////////////////////////////////////////////////////////////
// TabRendererGtk, public:
TabRendererGtk::TabRendererGtk(GtkThemeService* theme_service)
: showing_icon_(false),
showing_media_indicator_(false),
showing_close_button_(false),
favicon_hiding_offset_(0),
should_display_crashed_favicon_(false),
animating_media_state_(TAB_MEDIA_STATE_NONE),
loading_animation_(theme_service),
background_offset_x_(0),
background_offset_y_(kInactiveTabBackgroundOffsetY),
theme_service_(theme_service),
close_button_color_(0),
is_active_(false),
selected_title_color_(SK_ColorBLACK),
unselected_title_color_(SkColorSetRGB(64, 64, 64)) {
InitResources();
theme_service_->InitThemesFor(this);
registrar_.Add(this, chrome::NOTIFICATION_BROWSER_THEME_CHANGED,
content::Source<ThemeService>(theme_service_));
tab_.Own(gtk_fixed_new());
gtk_widget_set_app_paintable(tab_.get(), TRUE);
g_signal_connect(tab_.get(), "expose-event",
G_CALLBACK(OnExposeEventThunk), this);
g_signal_connect(tab_.get(), "size-allocate",
G_CALLBACK(OnSizeAllocateThunk), this);
close_button_.reset(MakeCloseButton());
gtk_widget_show(tab_.get());
hover_animation_.reset(new gfx::SlideAnimation(this));
hover_animation_->SetSlideDuration(kHoverDurationMs);
}
TabRendererGtk::~TabRendererGtk() {
tab_.Destroy();
}
void TabRendererGtk::Observe(int type,
const content::NotificationSource& source,
const content::NotificationDetails& details) {
DCHECK(chrome::NOTIFICATION_BROWSER_THEME_CHANGED);
selected_title_color_ =
theme_service_->GetColor(ThemeProperties::COLOR_TAB_TEXT);
unselected_title_color_ =
theme_service_->GetColor(ThemeProperties::COLOR_BACKGROUND_TAB_TEXT);
}
void TabRendererGtk::UpdateData(WebContents* contents,
bool app,
bool loading_only) {
DCHECK(contents);
FaviconTabHelper* favicon_tab_helper =
FaviconTabHelper::FromWebContents(contents);
if (!loading_only) {
data_.title = contents->GetTitle();
data_.incognito = contents->GetBrowserContext()->IsOffTheRecord();
TabMediaState next_media_state;
if (contents->IsCrashed()) {
data_.crashed = true;
next_media_state = TAB_MEDIA_STATE_NONE;
} else {
data_.crashed = false;
next_media_state = chrome::GetTabMediaStateForContents(contents);
}
if (data_.media_state != next_media_state) {
data_.previous_media_state = data_.media_state;
data_.media_state = next_media_state;
}
SkBitmap* app_icon =
extensions::TabHelper::FromWebContents(contents)->GetExtensionAppIcon();
if (app_icon) {
data_.favicon = *app_icon;
} else {
data_.favicon = favicon_tab_helper->GetFavicon().AsBitmap();
}
data_.app = app;
// Make a cairo cached version of the favicon.
if (!data_.favicon.isNull()) {
// Instead of resizing the icon during each frame, create our resized
// icon resource now, send it to the xserver and use that each frame
// instead.
// For source images smaller than the favicon square, scale them as if
// they were padded to fit the favicon square, so we don't blow up tiny
// favicons into larger or nonproportional results.
GdkPixbuf* pixbuf = GetResizedGdkPixbufFromSkBitmap(data_.favicon,
gfx::kFaviconSize, gfx::kFaviconSize);
data_.cairo_favicon.UsePixbuf(pixbuf);
g_object_unref(pixbuf);
} else {
data_.cairo_favicon.Reset();
}
// This is kind of a hacky way to determine whether our icon is the default
// favicon. But the plumbing that would be necessary to do it right would
// be a good bit of work and would sully code for other platforms which
// don't care to custom-theme the favicon. Hopefully the default favicon
// will eventually be chromium-themable and this code will go away.
data_.is_default_favicon =
(data_.favicon.pixelRef() ==
ui::ResourceBundle::GetSharedInstance().GetImageNamed(
IDR_DEFAULT_FAVICON).AsBitmap().pixelRef());
}
// Loading state also involves whether we show the favicon, since that's where
// we display the throbber.
data_.loading = contents->IsLoading();
data_.show_icon = favicon_tab_helper->ShouldDisplayFavicon();
}
void TabRendererGtk::UpdateFromModel() {
// Force a layout, since the tab may have grown a favicon.
Layout();
SchedulePaint();
if (data_.crashed) {
if (!should_display_crashed_favicon_ && !IsPerformingCrashAnimation())
StartCrashAnimation();
} else {
if (IsPerformingCrashAnimation())
StopCrashAnimation();
ResetCrashedFavicon();
}
if (data_.media_state != data_.previous_media_state) {
data_.previous_media_state = data_.media_state;
if (data_.media_state != TAB_MEDIA_STATE_NONE)
animating_media_state_ = data_.media_state;
StartMediaIndicatorAnimation();
}
}
void TabRendererGtk::SetBlocked(bool blocked) {
if (data_.blocked == blocked)
return;
data_.blocked = blocked;
// TODO(zelidrag) bug 32399: Make tabs pulse on Linux as well.
}
bool TabRendererGtk::is_blocked() const {
return data_.blocked;
}
bool TabRendererGtk::IsActive() const {
return is_active_;
}
bool TabRendererGtk::IsSelected() const {
return true;
}
bool TabRendererGtk::IsVisible() const {
return gtk_widget_get_visible(tab_.get());
}
void TabRendererGtk::SetVisible(bool visible) const {
if (visible) {
gtk_widget_show(tab_.get());
if (data_.mini)
gtk_widget_show(close_button_->widget());
} else {
gtk_widget_hide_all(tab_.get());
}
}
bool TabRendererGtk::ValidateLoadingAnimation(AnimationState animation_state) {
return loading_animation_.ValidateLoadingAnimation(animation_state);
}
void TabRendererGtk::PaintFaviconArea(GtkWidget* widget, cairo_t* cr) {
DCHECK(ShouldShowIcon());
cairo_rectangle(cr,
x() + favicon_bounds_.x(),
y() + favicon_bounds_.y(),
favicon_bounds_.width(),
favicon_bounds_.height());
cairo_clip(cr);
// The tab is rendered into a windowless widget whose offset is at the
// coordinate event->area. Translate by these offsets so we can render at
// (0,0) to match Windows' rendering metrics.
cairo_matrix_t cairo_matrix;
cairo_matrix_init_translate(&cairo_matrix, x(), y());
cairo_set_matrix(cr, &cairo_matrix);
// Which background should we be painting?
int theme_id;
int offset_y = 0;
if (IsActive()) {
theme_id = IDR_THEME_TOOLBAR;
} else {
theme_id = data_.incognito ? IDR_THEME_TAB_BACKGROUND_INCOGNITO :
IDR_THEME_TAB_BACKGROUND;
if (!theme_service_->HasCustomImage(theme_id))
offset_y = background_offset_y_;
}
// Paint the background behind the favicon.
const gfx::Image tab_bg = theme_service_->GetImageNamed(theme_id);
tab_bg.ToCairo()->SetSource(cr, widget, -x(), -offset_y);
cairo_pattern_set_extend(cairo_get_source(cr), CAIRO_EXTEND_REPEAT);
cairo_rectangle(cr,
favicon_bounds_.x(), favicon_bounds_.y(),
favicon_bounds_.width(), favicon_bounds_.height());
cairo_fill(cr);
if (!IsActive()) {
double throb_value = GetThrobValue();
if (throb_value > 0) {
cairo_push_group(cr);
gfx::Image active_bg =
theme_service_->GetImageNamed(IDR_THEME_TOOLBAR);
active_bg.ToCairo()->SetSource(cr, widget, -x(), 0);
cairo_pattern_set_extend(cairo_get_source(cr), CAIRO_EXTEND_REPEAT);
cairo_rectangle(cr,
favicon_bounds_.x(), favicon_bounds_.y(),
favicon_bounds_.width(), favicon_bounds_.height());
cairo_fill(cr);
cairo_pop_group_to_source(cr);
cairo_paint_with_alpha(cr, throb_value);
}
}
PaintIcon(widget, cr);
}
void TabRendererGtk::MaybeAdjustLeftForMiniTab(gfx::Rect* icon_bounds) const {
if (!(mini() || data_.animating_mini_change) ||
bounds_.width() >= kMiniTabRendererAsNormalTabWidth)
return;
const int mini_delta = kMiniTabRendererAsNormalTabWidth - GetMiniWidth();
const int ideal_delta = bounds_.width() - GetMiniWidth();
const int ideal_x = (GetMiniWidth() - icon_bounds->width()) / 2;
icon_bounds->set_x(icon_bounds->x() + static_cast<int>(
(1 - static_cast<float>(ideal_delta) / static_cast<float>(mini_delta)) *
(ideal_x - icon_bounds->x())));
}
// static
gfx::Size TabRendererGtk::GetMinimumUnselectedSize() {
InitResources();
gfx::Size minimum_size;
minimum_size.set_width(kLeftPadding + kRightPadding);
// Since we use bitmap images, the real minimum height of the image is
// defined most accurately by the height of the end cap images.
minimum_size.set_height(tab_active_l_height_ - kToolbarOverlap);
return minimum_size;
}
// static
gfx::Size TabRendererGtk::GetMinimumSelectedSize() {
gfx::Size minimum_size = GetMinimumUnselectedSize();
minimum_size.set_width(kLeftPadding + gfx::kFaviconSize + kRightPadding);
return minimum_size;
}
// static
gfx::Size TabRendererGtk::GetStandardSize() {
gfx::Size standard_size = GetMinimumUnselectedSize();
standard_size.Enlarge(kFaviconTitleSpacing + kStandardTitleWidth, 0);
return standard_size;
}
// static
int TabRendererGtk::GetMiniWidth() {
return browser_defaults::kMiniTabWidth;
}
// static
int TabRendererGtk::GetContentHeight() {
// The height of the content of the Tab is the largest of the favicon,
// the title text and the close button graphic.
int content_height = std::max(gfx::kFaviconSize, title_font_height_);
return std::max(content_height, close_button_height_);
}
gfx::Rect TabRendererGtk::GetNonMirroredBounds(GtkWidget* parent) const {
// The tabstrip widget is a windowless widget so the tab widget's allocation
// is relative to the browser titlebar. We need the bounds relative to the
// tabstrip.
gfx::Rect bounds = GetWidgetBoundsRelativeToParent(parent, widget());
bounds.set_x(gtk_util::MirroredLeftPointForRect(parent, bounds));
return bounds;
}
gfx::Rect TabRendererGtk::GetRequisition() const {
return gfx::Rect(requisition_.x(), requisition_.y(),
requisition_.width(), requisition_.height());
}
void TabRendererGtk::StartMiniTabTitleAnimation() {
if (!mini_title_animation_.get()) {
mini_title_animation_.reset(new gfx::ThrobAnimation(this));
mini_title_animation_->SetThrobDuration(kMiniTitleChangeThrobDuration);
}
if (!mini_title_animation_->is_animating())
mini_title_animation_->StartThrobbing(-1);
}
void TabRendererGtk::StopMiniTabTitleAnimation() {
if (mini_title_animation_.get())
mini_title_animation_->Stop();
}
void TabRendererGtk::SetBounds(const gfx::Rect& bounds) {
requisition_ = bounds;
gtk_widget_set_size_request(tab_.get(), bounds.width(), bounds.height());
}
////////////////////////////////////////////////////////////////////////////////
// TabRendererGtk, protected:
void TabRendererGtk::Raise() const {
if (gtk_button_get_event_window(GTK_BUTTON(close_button_->widget())))
gdk_window_raise(gtk_button_get_event_window(
GTK_BUTTON(close_button_->widget())));
}
string16 TabRendererGtk::GetTitle() const {
return data_.title;
}
///////////////////////////////////////////////////////////////////////////////
// TabRendererGtk, gfx::AnimationDelegate implementation:
void TabRendererGtk::AnimationProgressed(const gfx::Animation* animation) {
gtk_widget_queue_draw(tab_.get());
}
void TabRendererGtk::AnimationCanceled(const gfx::Animation* animation) {
if (media_indicator_animation_ == animation)
animating_media_state_ = data_.media_state;
AnimationEnded(animation);
}
void TabRendererGtk::AnimationEnded(const gfx::Animation* animation) {
if (media_indicator_animation_ == animation)
animating_media_state_ = data_.media_state;
gtk_widget_queue_draw(tab_.get());
}
////////////////////////////////////////////////////////////////////////////////
// TabRendererGtk, private:
void TabRendererGtk::StartCrashAnimation() {
if (!crash_animation_.get())
crash_animation_.reset(new FaviconCrashAnimation(this));
crash_animation_->Stop();
crash_animation_->Start();
}
void TabRendererGtk::StopCrashAnimation() {
if (!crash_animation_.get())
return;
crash_animation_->Stop();
}
bool TabRendererGtk::IsPerformingCrashAnimation() const {
return crash_animation_.get() && crash_animation_->is_animating();
}
void TabRendererGtk::StartMediaIndicatorAnimation() {
media_indicator_animation_ =
chrome::CreateTabMediaIndicatorFadeAnimation(data_.media_state);
media_indicator_animation_->set_delegate(this);
media_indicator_animation_->Start();
}
void TabRendererGtk::SetFaviconHidingOffset(int offset) {
favicon_hiding_offset_ = offset;
SchedulePaint();
}
void TabRendererGtk::DisplayCrashedFavicon() {
should_display_crashed_favicon_ = true;
}
void TabRendererGtk::ResetCrashedFavicon() {
should_display_crashed_favicon_ = false;
}
void TabRendererGtk::Paint(GtkWidget* widget, cairo_t* cr) {
// Don't paint if we're narrower than we can render correctly. (This should
// only happen during animations).
if (width() < GetMinimumUnselectedSize().width() && !mini())
return;
// See if the model changes whether the icons should be painted.
const bool show_icon = ShouldShowIcon();
const bool show_media_indicator = ShouldShowMediaIndicator();
const bool show_close_button = ShouldShowCloseBox();
if (show_icon != showing_icon_ ||
show_media_indicator != showing_media_indicator_ ||
show_close_button != showing_close_button_)
Layout();
PaintTabBackground(widget, cr);
if (!mini() || width() > kMiniTabRendererAsNormalTabWidth)
PaintTitle(widget, cr);
if (show_icon)
PaintIcon(widget, cr);
if (show_media_indicator)
PaintMediaIndicator(widget, cr);
}
cairo_surface_t* TabRendererGtk::PaintToSurface(GtkWidget* widget,
cairo_t* cr) {
cairo_surface_t* target = cairo_get_target(cr);
cairo_surface_t* out_surface = cairo_surface_create_similar(
target,
CAIRO_CONTENT_COLOR_ALPHA,
width(), height());
cairo_t* out_cr = cairo_create(out_surface);
Paint(widget, out_cr);
cairo_destroy(out_cr);
return out_surface;
}
void TabRendererGtk::SchedulePaint() {
gtk_widget_queue_draw(tab_.get());
}
gfx::Rect TabRendererGtk::GetLocalBounds() {
return gfx::Rect(0, 0, bounds_.width(), bounds_.height());
}
void TabRendererGtk::Layout() {
gfx::Rect local_bounds = GetLocalBounds();
if (local_bounds.IsEmpty())
return;
local_bounds.Inset(kLeftPadding, kTopPadding, kRightPadding, kBottomPadding);
// Figure out who is tallest.
int content_height = GetContentHeight();
// Size the Favicon.
showing_icon_ = ShouldShowIcon();
if (showing_icon_) {
int favicon_top = kTopPadding + (content_height - gfx::kFaviconSize) / 2;
favicon_bounds_.SetRect(local_bounds.x(), favicon_top,
gfx::kFaviconSize, gfx::kFaviconSize);
MaybeAdjustLeftForMiniTab(&favicon_bounds_);
} else {
favicon_bounds_.SetRect(local_bounds.x(), local_bounds.y(), 0, 0);
}
// Size the Close button.
showing_close_button_ = ShouldShowCloseBox();
if (showing_close_button_) {
int close_button_top = kTopPadding +
(content_height - close_button_height_) / 2;
int close_button_left =
local_bounds.right() - close_button_width_ + kCloseButtonHorzFuzz;
close_button_bounds_.SetRect(close_button_left,
close_button_top,
close_button_width_,
close_button_height_);
// If the close button color has changed, generate a new one.
if (theme_service_) {
SkColor tab_text_color =
theme_service_->GetColor(ThemeProperties::COLOR_TAB_TEXT);
if (!close_button_color_ || tab_text_color != close_button_color_) {
close_button_color_ = tab_text_color;
ui::ResourceBundle& rb = ui::ResourceBundle::GetSharedInstance();
close_button_->SetBackground(close_button_color_,
rb.GetImageNamed(IDR_CLOSE_1).AsBitmap(),
rb.GetImageNamed(IDR_CLOSE_1_MASK).AsBitmap());
}
}
} else {
close_button_bounds_.SetRect(0, 0, 0, 0);
}
showing_media_indicator_ = ShouldShowMediaIndicator();
if (showing_media_indicator_) {
const gfx::Image& media_indicator_image =
chrome::GetTabMediaIndicatorImage(animating_media_state_);
media_indicator_bounds_.set_width(media_indicator_image.Width());
media_indicator_bounds_.set_height(media_indicator_image.Height());
media_indicator_bounds_.set_y(
kTopPadding + (content_height - media_indicator_bounds_.height()) / 2);
const int right = showing_close_button_ ?
close_button_bounds_.x() : local_bounds.right();
media_indicator_bounds_.set_x(std::max(
local_bounds.x(), right - media_indicator_bounds_.width()));
MaybeAdjustLeftForMiniTab(&media_indicator_bounds_);
} else {
media_indicator_bounds_.SetRect(local_bounds.x(), local_bounds.y(), 0, 0);
}
if (!mini() || width() >= kMiniTabRendererAsNormalTabWidth) {
// Size the Title text to fill the remaining space.
int title_left = favicon_bounds_.right() + kFaviconTitleSpacing;
int title_top = kTopPadding;
// If the user has big fonts, the title will appear rendered too far down
// on the y-axis if we use the regular top padding, so we need to adjust it
// so that the text appears centered.
gfx::Size minimum_size = GetMinimumUnselectedSize();
int text_height = title_top + title_font_height_ + kBottomPadding;
if (text_height > minimum_size.height())
title_top -= (text_height - minimum_size.height()) / 2;
int title_width;
if (showing_media_indicator_) {
title_width = media_indicator_bounds_.x() - kTitleCloseButtonSpacing -
title_left;
} else if (close_button_bounds_.width() && close_button_bounds_.height()) {
title_width = close_button_bounds_.x() - kTitleCloseButtonSpacing -
title_left;
} else {
title_width = local_bounds.width() - title_left;
}
title_width = std::max(title_width, 0);
title_bounds_.SetRect(title_left, title_top, title_width, content_height);
}
favicon_bounds_.set_x(
gtk_util::MirroredLeftPointForRect(tab_.get(), favicon_bounds_));
media_indicator_bounds_.set_x(
gtk_util::MirroredLeftPointForRect(tab_.get(), media_indicator_bounds_));
close_button_bounds_.set_x(
gtk_util::MirroredLeftPointForRect(tab_.get(), close_button_bounds_));
title_bounds_.set_x(
gtk_util::MirroredLeftPointForRect(tab_.get(), title_bounds_));
MoveCloseButtonWidget();
}
void TabRendererGtk::MoveCloseButtonWidget() {
if (!close_button_bounds_.IsEmpty()) {
gtk_fixed_move(GTK_FIXED(tab_.get()), close_button_->widget(),
close_button_bounds_.x(), close_button_bounds_.y());
gtk_widget_show(close_button_->widget());
} else {
gtk_widget_hide(close_button_->widget());
}
}
void TabRendererGtk::PaintTab(GtkWidget* widget, GdkEventExpose* event) {
cairo_t* cr = gdk_cairo_create(gtk_widget_get_window(widget));
gdk_cairo_rectangle(cr, &event->area);
cairo_clip(cr);
// The tab is rendered into a windowless widget whose offset is at the
// coordinate event->area. Translate by these offsets so we can render at
// (0,0) to match Windows' rendering metrics.
cairo_matrix_t cairo_matrix;
cairo_matrix_init_translate(&cairo_matrix, event->area.x, event->area.y);
cairo_set_matrix(cr, &cairo_matrix);
// Save the original x offset so we can position background images properly.
background_offset_x_ = event->area.x;
Paint(widget, cr);
cairo_destroy(cr);
}
void TabRendererGtk::PaintTitle(GtkWidget* widget, cairo_t* cr) {
if (title_bounds_.IsEmpty())
return;
// Paint the Title.
string16 title = data_.title;
if (title.empty()) {
title = data_.loading ?
l10n_util::GetStringUTF16(IDS_TAB_LOADING_TITLE) :
CoreTabHelper::GetDefaultTitle();
} else {
Browser::FormatTitleForDisplay(&title);
}
GtkAllocation allocation;
gtk_widget_get_allocation(widget, &allocation);
gfx::Rect bounds(allocation);
// Draw the text directly onto the Cairo context. This is necessary for
// getting the draw order correct, and automatically applying transformations
// such as scaling when a tab is detached.
gfx::CanvasSkiaPaintCairo canvas(cr, bounds.size(), true);
SkColor title_color = IsSelected() ? selected_title_color_
: unselected_title_color_;
// Disable subpixel rendering. This does not work because the canvas has a
// transparent background.
int flags = gfx::Canvas::NO_ELLIPSIS | gfx::Canvas::NO_SUBPIXEL_RENDERING;
canvas.DrawFadeTruncatingStringRectWithFlags(
title, gfx::Canvas::TruncateFadeTail, gfx::FontList(*title_font_),
title_color, title_bounds_, flags);
}
void TabRendererGtk::PaintIcon(GtkWidget* widget, cairo_t* cr) {
if (loading_animation_.animation_state() != ANIMATION_NONE) {
PaintLoadingAnimation(widget, cr);
return;
}
gfx::CairoCachedSurface* to_display = NULL;
if (should_display_crashed_favicon_) {
to_display = theme_service_->GetImageNamed(IDR_SAD_FAVICON).ToCairo();
} else if (!data_.favicon.isNull()) {
if (data_.is_default_favicon && theme_service_->UsingNativeTheme()) {
to_display = GtkThemeService::GetDefaultFavicon(true).ToCairo();
} else if (data_.cairo_favicon.valid()) {
to_display = &data_.cairo_favicon;
}
}
if (to_display) {
to_display->SetSource(cr, widget, favicon_bounds_.x(),
favicon_bounds_.y() + favicon_hiding_offset_);
cairo_paint(cr);
}
}
void TabRendererGtk::PaintMediaIndicator(GtkWidget* widget, cairo_t* cr) {
if (media_indicator_bounds_.IsEmpty() || !media_indicator_animation_)
return;
double opaqueness = media_indicator_animation_->GetCurrentValue();
if (data_.media_state == TAB_MEDIA_STATE_NONE)
opaqueness = 1.0 - opaqueness; // Fading out, not in.
const gfx::Image& media_indicator_image =
chrome::GetTabMediaIndicatorImage(animating_media_state_);
media_indicator_image.ToCairo()->SetSource(
cr, widget, media_indicator_bounds_.x(), media_indicator_bounds_.y());
cairo_paint_with_alpha(cr, opaqueness);
}
void TabRendererGtk::PaintTabBackground(GtkWidget* widget, cairo_t* cr) {
if (IsActive()) {
PaintActiveTabBackground(widget, cr);
} else {
PaintInactiveTabBackground(widget, cr);
double throb_value = GetThrobValue();
if (throb_value > 0) {
cairo_push_group(cr);
PaintActiveTabBackground(widget, cr);
cairo_pop_group_to_source(cr);
cairo_paint_with_alpha(cr, throb_value);
}
}
}
void TabRendererGtk::DrawTabBackground(
cairo_t* cr,
GtkWidget* widget,
const gfx::Image& tab_bg,
int offset_x,
int offset_y) {
tab_bg.ToCairo()->SetSource(cr, widget, -offset_x, -offset_y);
cairo_pattern_set_extend(cairo_get_source(cr), CAIRO_EXTEND_REPEAT);
ui::ResourceBundle& rb = ui::ResourceBundle::GetSharedInstance();
// Draw left edge
gfx::Image& tab_l_mask = rb.GetNativeImageNamed(IDR_TAB_ALPHA_LEFT);
tab_l_mask.ToCairo()->MaskSource(cr, widget, 0, 0);
// Draw center
cairo_rectangle(cr,
tab_active_l_width_, kDropShadowOffset,
width() - (2 * tab_active_l_width_),
tab_inactive_l_height_);
cairo_fill(cr);
// Draw right edge
gfx::Image& tab_r_mask = rb.GetNativeImageNamed(IDR_TAB_ALPHA_RIGHT);
tab_r_mask.ToCairo()->MaskSource(cr, widget,
width() - tab_active_l_width_, 0);
}
void TabRendererGtk::DrawTabShadow(cairo_t* cr,
GtkWidget* widget,
int left_idr,
int center_idr,
int right_idr) {
ui::ResourceBundle& rb = ui::ResourceBundle::GetSharedInstance();
gfx::Image& active_image_l = rb.GetNativeImageNamed(left_idr);
gfx::Image& active_image_c = rb.GetNativeImageNamed(center_idr);
gfx::Image& active_image_r = rb.GetNativeImageNamed(right_idr);
// Draw left drop shadow
active_image_l.ToCairo()->SetSource(cr, widget, 0, 0);
cairo_paint(cr);
// Draw the center shadow
active_image_c.ToCairo()->SetSource(cr, widget, 0, 0);
cairo_pattern_set_extend(cairo_get_source(cr), CAIRO_EXTEND_REPEAT);
cairo_rectangle(cr, tab_active_l_width_, 0,
width() - (2 * tab_active_l_width_),
height());
cairo_fill(cr);
// Draw right drop shadow
active_image_r.ToCairo()->SetSource(
cr, widget, width() - active_image_r.ToCairo()->Width(), 0);
cairo_paint(cr);
}
void TabRendererGtk::PaintInactiveTabBackground(GtkWidget* widget,
cairo_t* cr) {
int theme_id = data_.incognito ?
IDR_THEME_TAB_BACKGROUND_INCOGNITO : IDR_THEME_TAB_BACKGROUND;
gfx::Image tab_bg = theme_service_->GetImageNamed(theme_id);
// If the theme is providing a custom background image, then its top edge
// should be at the top of the tab. Otherwise, we assume that the background
// image is a composited foreground + frame image.
int offset_y = theme_service_->HasCustomImage(theme_id) ?
0 : background_offset_y_;
DrawTabBackground(cr, widget, tab_bg, background_offset_x_, offset_y);
DrawTabShadow(cr, widget, IDR_TAB_INACTIVE_LEFT, IDR_TAB_INACTIVE_CENTER,
IDR_TAB_INACTIVE_RIGHT);
}
void TabRendererGtk::PaintActiveTabBackground(GtkWidget* widget,
cairo_t* cr) {
gfx::Image tab_bg = theme_service_->GetImageNamed(IDR_THEME_TOOLBAR);
DrawTabBackground(cr, widget, tab_bg, background_offset_x_, 0);
DrawTabShadow(cr, widget, IDR_TAB_ACTIVE_LEFT, IDR_TAB_ACTIVE_CENTER,
IDR_TAB_ACTIVE_RIGHT);
}
void TabRendererGtk::PaintLoadingAnimation(GtkWidget* widget,
cairo_t* cr) {
int id = loading_animation_.animation_state() == ANIMATION_WAITING ?
IDR_THROBBER_WAITING : IDR_THROBBER;
gfx::Image throbber = theme_service_->GetImageNamed(id);
const int image_size = throbber.ToCairo()->Height();
const int image_offset = loading_animation_.animation_frame() * image_size;
DCHECK(image_size == favicon_bounds_.height());
DCHECK(image_size == favicon_bounds_.width());
throbber.ToCairo()->SetSource(cr, widget, favicon_bounds_.x() - image_offset,
favicon_bounds_.y());
cairo_rectangle(cr, favicon_bounds_.x(), favicon_bounds_.y(),
image_size, image_size);
cairo_fill(cr);
}
int TabRendererGtk::IconCapacity() const {
if (height() < GetMinimumUnselectedSize().height())
return 0;
const int available_width =
std::max(0, width() - kLeftPadding - kRightPadding);
const int kPaddingBetweenIcons = 2;
if (available_width >= gfx::kFaviconSize &&
available_width < (gfx::kFaviconSize + kPaddingBetweenIcons)) {
return 1;
}
return available_width / (gfx::kFaviconSize + kPaddingBetweenIcons);
}
bool TabRendererGtk::ShouldShowIcon() const {
return chrome::ShouldTabShowFavicon(
IconCapacity(), mini(), IsActive(), data_.show_icon,
animating_media_state_);
}
bool TabRendererGtk::ShouldShowMediaIndicator() const {
return chrome::ShouldTabShowMediaIndicator(
IconCapacity(), mini(), IsActive(), data_.show_icon,
animating_media_state_);
}
bool TabRendererGtk::ShouldShowCloseBox() const {
return chrome::ShouldTabShowCloseButton(IconCapacity(), mini(), IsActive());
}
CustomDrawButton* TabRendererGtk::MakeCloseButton() {
CustomDrawButton* button = CustomDrawButton::CloseButtonBar(theme_service_);
button->ForceChromeTheme();
g_signal_connect(button->widget(), "clicked",
G_CALLBACK(OnCloseButtonClickedThunk), this);
g_signal_connect(button->widget(), "button-release-event",
G_CALLBACK(OnCloseButtonMouseReleaseThunk), this);
g_signal_connect(button->widget(), "enter-notify-event",
G_CALLBACK(OnEnterNotifyEventThunk), this);
g_signal_connect(button->widget(), "leave-notify-event",
G_CALLBACK(OnLeaveNotifyEventThunk), this);
gtk_widget_set_can_focus(button->widget(), FALSE);
gtk_fixed_put(GTK_FIXED(tab_.get()), button->widget(), 0, 0);
return button;
}
double TabRendererGtk::GetThrobValue() {
bool is_selected = IsSelected();
double min = is_selected ? kSelectedTabOpacity : 0;
double scale = is_selected ? kSelectedTabThrobScale : 1;
if (mini_title_animation_.get() && mini_title_animation_->is_animating()) {
return mini_title_animation_->GetCurrentValue() *
kMiniTitleChangeThrobOpacity * scale + min;
}
if (hover_animation_.get())
return kHoverOpacity * hover_animation_->GetCurrentValue() * scale + min;
return is_selected ? kSelectedTabOpacity : 0;
}
void TabRendererGtk::CloseButtonClicked() {
// Nothing to do.
}
void TabRendererGtk::OnCloseButtonClicked(GtkWidget* widget) {
CloseButtonClicked();
}
gboolean TabRendererGtk::OnCloseButtonMouseRelease(GtkWidget* widget,
GdkEventButton* event) {
if (event->button == 2) {
CloseButtonClicked();
return TRUE;
}
return FALSE;
}
gboolean TabRendererGtk::OnExposeEvent(GtkWidget* widget,
GdkEventExpose* event) {
TRACE_EVENT0("ui::gtk", "TabRendererGtk::OnExposeEvent");
PaintTab(widget, event);
gtk_container_propagate_expose(GTK_CONTAINER(tab_.get()),
close_button_->widget(), event);
return TRUE;
}
void TabRendererGtk::OnSizeAllocate(GtkWidget* widget,
GtkAllocation* allocation) {
gfx::Rect bounds = gfx::Rect(allocation->x, allocation->y,
allocation->width, allocation->height);
// Nothing to do if the bounds are the same. If we don't catch this, we'll
// get an infinite loop of size-allocate signals.
if (bounds_ == bounds)
return;
bounds_ = bounds;
Layout();
}
gboolean TabRendererGtk::OnEnterNotifyEvent(GtkWidget* widget,
GdkEventCrossing* event) {
hover_animation_->SetTweenType(gfx::Tween::EASE_OUT);
hover_animation_->Show();
return FALSE;
}
gboolean TabRendererGtk::OnLeaveNotifyEvent(GtkWidget* widget,
GdkEventCrossing* event) {
hover_animation_->SetTweenType(gfx::Tween::EASE_IN);
hover_animation_->Hide();
return FALSE;
}
// static
void TabRendererGtk::InitResources() {
if (initialized_)
return;
// Grab the pixel sizes of our masking images.
ui::ResourceBundle& rb = ui::ResourceBundle::GetSharedInstance();
GdkPixbuf* tab_active_l = rb.GetNativeImageNamed(
IDR_TAB_ACTIVE_LEFT).ToGdkPixbuf();
tab_active_l_width_ = gdk_pixbuf_get_width(tab_active_l);
tab_active_l_height_ = gdk_pixbuf_get_height(tab_active_l);
GdkPixbuf* tab_inactive_l = rb.GetNativeImageNamed(
IDR_TAB_INACTIVE_LEFT).ToGdkPixbuf();
tab_inactive_l_height_ = gdk_pixbuf_get_height(tab_inactive_l);
GdkPixbuf* tab_close = rb.GetNativeImageNamed(IDR_CLOSE_1).ToGdkPixbuf();
close_button_width_ = gdk_pixbuf_get_width(tab_close);
close_button_height_ = gdk_pixbuf_get_height(tab_close);
const gfx::Font& base_font = rb.GetFont(ui::ResourceBundle::BaseFont);
title_font_ = new gfx::Font(base_font.GetFontName(), kFontPixelSize);
title_font_height_ = title_font_->GetHeight();
initialized_ = true;
}