| // 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 "ui/app_list/views/app_list_item_view.h" |
| |
| #include <algorithm> |
| |
| #include "base/strings/utf_string_conversions.h" |
| #include "ui/accessibility/ax_view_state.h" |
| #include "ui/app_list/app_list_constants.h" |
| #include "ui/app_list/app_list_folder_item.h" |
| #include "ui/app_list/app_list_item.h" |
| #include "ui/app_list/views/apps_grid_view.h" |
| #include "ui/app_list/views/cached_label.h" |
| #include "ui/app_list/views/progress_bar_view.h" |
| #include "ui/base/dragdrop/drag_utils.h" |
| #include "ui/base/l10n/l10n_util.h" |
| #include "ui/base/resource/resource_bundle.h" |
| #include "ui/compositor/layer.h" |
| #include "ui/compositor/scoped_layer_animation_settings.h" |
| #include "ui/gfx/animation/throb_animation.h" |
| #include "ui/gfx/canvas.h" |
| #include "ui/gfx/font_list.h" |
| #include "ui/gfx/image/image_skia_operations.h" |
| #include "ui/gfx/point.h" |
| #include "ui/gfx/shadow_value.h" |
| #include "ui/gfx/transform_util.h" |
| #include "ui/strings/grit/ui_strings.h" |
| #include "ui/views/background.h" |
| #include "ui/views/controls/image_view.h" |
| #include "ui/views/controls/label.h" |
| #include "ui/views/controls/menu/menu_runner.h" |
| #include "ui/views/drag_controller.h" |
| |
| namespace app_list { |
| |
| namespace { |
| |
| const int kTopPadding = 20; |
| const int kIconTitleSpacing = 7; |
| const int kProgressBarHorizontalPadding = 12; |
| |
| // Radius of the folder dropping preview circle. |
| const int kFolderPreviewRadius = 40; |
| |
| const int kLeftRightPaddingChars = 1; |
| |
| // Scale to transform the icon when a drag starts. |
| const float kDraggingIconScale = 1.5f; |
| |
| // Delay in milliseconds of when the dragging UI should be shown for mouse drag. |
| const int kMouseDragUIDelayInMs = 200; |
| |
| const gfx::ShadowValues& GetIconShadows() { |
| CR_DEFINE_STATIC_LOCAL( |
| const gfx::ShadowValues, |
| icon_shadows, |
| (1, |
| gfx::ShadowValue(gfx::Point(0, 2), 2, SkColorSetARGB(0x24, 0, 0, 0)))); |
| return icon_shadows; |
| } |
| |
| gfx::FontList GetFontList() { |
| ui::ResourceBundle& rb = ui::ResourceBundle::GetSharedInstance(); |
| const gfx::FontList& font_list = rb.GetFontList(kItemTextFontStyle); |
| // The font is different on each platform. The font size is adjusted on some |
| // platforms to keep a consistent look. |
| #if defined(OS_LINUX) && !defined(OS_CHROMEOS) |
| // Reducing the font size by 2 makes it the same as the Windows font size. |
| const int kFontSizeDelta = -2; |
| return font_list.DeriveWithSizeDelta(kFontSizeDelta); |
| #else |
| return font_list; |
| #endif |
| } |
| |
| } // namespace |
| |
| // static |
| const char AppListItemView::kViewClassName[] = "ui/app_list/AppListItemView"; |
| |
| AppListItemView::AppListItemView(AppsGridView* apps_grid_view, |
| AppListItem* item) |
| : CustomButton(apps_grid_view), |
| is_folder_(item->GetItemType() == AppListFolderItem::kItemType), |
| is_in_folder_(item->IsInFolder()), |
| item_weak_(item), |
| apps_grid_view_(apps_grid_view), |
| icon_(new views::ImageView), |
| title_(new CachedLabel), |
| progress_bar_(new ProgressBarView), |
| ui_state_(UI_STATE_NORMAL), |
| touch_dragging_(false), |
| is_installing_(false), |
| is_highlighted_(false) { |
| icon_->set_interactive(false); |
| |
| title_->SetBackgroundColor(0); |
| title_->SetAutoColorReadabilityEnabled(false); |
| title_->SetEnabledColor(kGridTitleColor); |
| |
| static const gfx::FontList font_list = GetFontList(); |
| title_->SetFontList(font_list); |
| title_->SetHorizontalAlignment(gfx::ALIGN_LEFT); |
| title_->Invalidate(); |
| SetTitleSubpixelAA(); |
| |
| AddChildView(icon_); |
| AddChildView(title_); |
| AddChildView(progress_bar_); |
| |
| SetIcon(item->icon(), item->has_shadow()); |
| SetItemName(base::UTF8ToUTF16(item->GetDisplayName()), |
| base::UTF8ToUTF16(item->name())); |
| SetItemIsInstalling(item->is_installing()); |
| SetItemIsHighlighted(item->highlighted()); |
| item->AddObserver(this); |
| |
| set_context_menu_controller(this); |
| set_request_focus_on_press(false); |
| |
| SetAnimationDuration(0); |
| } |
| |
| AppListItemView::~AppListItemView() { |
| if (item_weak_) |
| item_weak_->RemoveObserver(this); |
| } |
| |
| void AppListItemView::SetIcon(const gfx::ImageSkia& icon, bool has_shadow) { |
| // Clear icon and bail out if item icon is empty. |
| if (icon.isNull()) { |
| icon_->SetImage(NULL); |
| return; |
| } |
| |
| gfx::ImageSkia resized(gfx::ImageSkiaOperations::CreateResizedImage( |
| icon, |
| skia::ImageOperations::RESIZE_BEST, |
| gfx::Size(kGridIconDimension, kGridIconDimension))); |
| if (has_shadow) { |
| gfx::ImageSkia shadow(gfx::ImageSkiaOperations::CreateImageWithDropShadow( |
| resized, GetIconShadows())); |
| icon_->SetImage(shadow); |
| return; |
| } |
| |
| icon_->SetImage(resized); |
| } |
| |
| void AppListItemView::SetUIState(UIState state) { |
| if (ui_state_ == state) |
| return; |
| |
| ui_state_ = state; |
| |
| switch (ui_state_) { |
| case UI_STATE_NORMAL: |
| title_->SetVisible(!is_installing_); |
| progress_bar_->SetVisible(is_installing_); |
| break; |
| case UI_STATE_DRAGGING: |
| title_->SetVisible(false); |
| progress_bar_->SetVisible(false); |
| break; |
| case UI_STATE_DROPPING_IN_FOLDER: |
| break; |
| } |
| #if !defined(OS_WIN) |
| ui::ScopedLayerAnimationSettings settings(layer()->GetAnimator()); |
| switch (ui_state_) { |
| case UI_STATE_NORMAL: |
| layer()->SetTransform(gfx::Transform()); |
| break; |
| case UI_STATE_DRAGGING: { |
| const gfx::Rect bounds(layer()->bounds().size()); |
| layer()->SetTransform(gfx::GetScaleTransform( |
| bounds.CenterPoint(), |
| kDraggingIconScale)); |
| break; |
| } |
| case UI_STATE_DROPPING_IN_FOLDER: |
| break; |
| } |
| #endif // !OS_WIN |
| |
| SchedulePaint(); |
| } |
| |
| void AppListItemView::SetTouchDragging(bool touch_dragging) { |
| if (touch_dragging_ == touch_dragging) |
| return; |
| |
| touch_dragging_ = touch_dragging; |
| SetUIState(touch_dragging_ ? UI_STATE_DRAGGING : UI_STATE_NORMAL); |
| } |
| |
| void AppListItemView::OnMouseDragTimer() { |
| DCHECK(apps_grid_view_->IsDraggedView(this)); |
| SetUIState(UI_STATE_DRAGGING); |
| } |
| |
| void AppListItemView::SetTitleSubpixelAA() { |
| // TODO(tapted): Enable AA for folders as well, taking care to play nice with |
| // the folder bubble animation. |
| bool enable_aa = !is_in_folder_ && ui_state_ == UI_STATE_NORMAL && |
| !is_highlighted_ && !apps_grid_view_->IsSelectedView(this) && |
| !apps_grid_view_->IsAnimatingView(this); |
| |
| bool currently_enabled = title_->background() != NULL; |
| if (currently_enabled == enable_aa) |
| return; |
| |
| if (enable_aa) { |
| title_->SetBackgroundColor(app_list::kContentsBackgroundColor); |
| title_->set_background(views::Background::CreateSolidBackground( |
| app_list::kContentsBackgroundColor)); |
| } else { |
| // In other cases, keep the background transparent to ensure correct |
| // interactions with animations. This will temporarily disable subpixel AA. |
| title_->SetBackgroundColor(0); |
| title_->set_background(NULL); |
| } |
| title_->Invalidate(); |
| title_->SchedulePaint(); |
| } |
| |
| void AppListItemView::Prerender() { |
| title_->PaintToBackingImage(); |
| } |
| |
| void AppListItemView::CancelContextMenu() { |
| if (context_menu_runner_) |
| context_menu_runner_->Cancel(); |
| } |
| |
| gfx::ImageSkia AppListItemView::GetDragImage() { |
| return icon_->GetImage(); |
| } |
| |
| void AppListItemView::OnDragEnded() { |
| mouse_drag_timer_.Stop(); |
| SetUIState(UI_STATE_NORMAL); |
| } |
| |
| gfx::Point AppListItemView::GetDragImageOffset() { |
| gfx::Point image = icon_->GetImageBounds().origin(); |
| return gfx::Point(icon_->x() + image.x(), icon_->y() + image.y()); |
| } |
| |
| void AppListItemView::SetAsAttemptedFolderTarget(bool is_target_folder) { |
| if (is_target_folder) |
| SetUIState(UI_STATE_DROPPING_IN_FOLDER); |
| else |
| SetUIState(UI_STATE_NORMAL); |
| } |
| |
| void AppListItemView::SetItemName(const base::string16& display_name, |
| const base::string16& full_name) { |
| title_->SetText(display_name); |
| title_->Invalidate(); |
| |
| title_->SetTooltipText(display_name == full_name ? base::string16() |
| : full_name); |
| |
| // Use full name for accessibility. |
| SetAccessibleName( |
| is_folder_ ? l10n_util::GetStringFUTF16( |
| IDS_APP_LIST_FOLDER_BUTTON_ACCESSIBILE_NAME, full_name) |
| : full_name); |
| Layout(); |
| } |
| |
| void AppListItemView::SetItemIsHighlighted(bool is_highlighted) { |
| is_highlighted_ = is_highlighted; |
| SchedulePaint(); |
| } |
| |
| void AppListItemView::SetItemIsInstalling(bool is_installing) { |
| is_installing_ = is_installing; |
| if (ui_state_ == UI_STATE_NORMAL) { |
| title_->SetVisible(!is_installing); |
| progress_bar_->SetVisible(is_installing); |
| } |
| SchedulePaint(); |
| } |
| |
| void AppListItemView::SetItemPercentDownloaded(int percent_downloaded) { |
| // A percent_downloaded() of -1 can mean it's not known how much percent is |
| // completed, or the download hasn't been marked complete, as is the case |
| // while an extension is being installed after being downloaded. |
| if (percent_downloaded == -1) |
| return; |
| progress_bar_->SetValue(percent_downloaded / 100.0); |
| } |
| |
| const char* AppListItemView::GetClassName() const { |
| return kViewClassName; |
| } |
| |
| void AppListItemView::Layout() { |
| gfx::Rect rect(GetContentsBounds()); |
| |
| const int left_right_padding = |
| title_->font_list().GetExpectedTextWidth(kLeftRightPaddingChars); |
| rect.Inset(left_right_padding, kTopPadding, left_right_padding, 0); |
| const int y = rect.y(); |
| |
| icon_->SetBoundsRect(GetIconBoundsForTargetViewBounds(GetContentsBounds())); |
| const gfx::Size title_size = title_->GetPreferredSize(); |
| gfx::Rect title_bounds(rect.x() + (rect.width() - title_size.width()) / 2, |
| y + kGridIconDimension + kIconTitleSpacing, |
| title_size.width(), |
| title_size.height()); |
| title_bounds.Intersect(rect); |
| title_->SetBoundsRect(title_bounds); |
| |
| gfx::Rect progress_bar_bounds(progress_bar_->GetPreferredSize()); |
| progress_bar_bounds.set_x(GetContentsBounds().x() + |
| kProgressBarHorizontalPadding); |
| progress_bar_bounds.set_y(title_bounds.y()); |
| progress_bar_->SetBoundsRect(progress_bar_bounds); |
| } |
| |
| void AppListItemView::SchedulePaintInRect(const gfx::Rect& r) { |
| SetTitleSubpixelAA(); |
| views::CustomButton::SchedulePaintInRect(r); |
| } |
| |
| void AppListItemView::OnPaint(gfx::Canvas* canvas) { |
| if (apps_grid_view_->IsDraggedView(this)) |
| return; |
| |
| gfx::Rect rect(GetContentsBounds()); |
| if (is_highlighted_ && !is_installing_) { |
| canvas->FillRect(rect, kHighlightedColor); |
| return; |
| } |
| if (apps_grid_view_->IsSelectedView(this)) |
| canvas->FillRect(rect, kSelectedColor); |
| |
| if (ui_state_ == UI_STATE_DROPPING_IN_FOLDER) { |
| DCHECK(apps_grid_view_->model()->folders_enabled()); |
| |
| // Draw folder dropping preview circle. |
| gfx::Point center = gfx::Point(icon_->x() + icon_->size().width() / 2, |
| icon_->y() + icon_->size().height() / 2); |
| SkPaint paint; |
| paint.setStyle(SkPaint::kFill_Style); |
| paint.setAntiAlias(true); |
| paint.setColor(kFolderBubbleColor); |
| canvas->DrawCircle(center, kFolderPreviewRadius, paint); |
| } |
| } |
| |
| void AppListItemView::ShowContextMenuForView(views::View* source, |
| const gfx::Point& point, |
| ui::MenuSourceType source_type) { |
| ui::MenuModel* menu_model = |
| item_weak_ ? item_weak_->GetContextMenuModel() : NULL; |
| if (!menu_model) |
| return; |
| |
| context_menu_runner_.reset( |
| new views::MenuRunner(menu_model, views::MenuRunner::HAS_MNEMONICS)); |
| if (context_menu_runner_->RunMenuAt(GetWidget(), |
| NULL, |
| gfx::Rect(point, gfx::Size()), |
| views::MENU_ANCHOR_TOPLEFT, |
| source_type) == |
| views::MenuRunner::MENU_DELETED) { |
| return; |
| } |
| } |
| |
| void AppListItemView::StateChanged() { |
| const bool is_folder_ui_enabled = apps_grid_view_->model()->folders_enabled(); |
| if (is_folder_ui_enabled) |
| apps_grid_view_->ClearAnySelectedView(); |
| |
| if (state() == STATE_HOVERED || state() == STATE_PRESSED) { |
| if (!is_folder_ui_enabled) |
| apps_grid_view_->SetSelectedView(this); |
| title_->SetEnabledColor(kGridTitleHoverColor); |
| } else { |
| if (!is_folder_ui_enabled) |
| apps_grid_view_->ClearSelectedView(this); |
| SetItemIsHighlighted(false); |
| if (item_weak_) |
| item_weak_->set_highlighted(false); |
| title_->SetEnabledColor(kGridTitleColor); |
| } |
| title_->Invalidate(); |
| } |
| |
| bool AppListItemView::ShouldEnterPushedState(const ui::Event& event) { |
| // Don't enter pushed state for ET_GESTURE_TAP_DOWN so that hover gray |
| // background does not show up during scroll. |
| if (event.type() == ui::ET_GESTURE_TAP_DOWN) |
| return false; |
| |
| return views::CustomButton::ShouldEnterPushedState(event); |
| } |
| |
| bool AppListItemView::OnMousePressed(const ui::MouseEvent& event) { |
| CustomButton::OnMousePressed(event); |
| |
| if (!ShouldEnterPushedState(event)) |
| return true; |
| |
| apps_grid_view_->InitiateDrag(this, AppsGridView::MOUSE, event); |
| |
| if (apps_grid_view_->IsDraggedView(this)) { |
| mouse_drag_timer_.Start(FROM_HERE, |
| base::TimeDelta::FromMilliseconds(kMouseDragUIDelayInMs), |
| this, &AppListItemView::OnMouseDragTimer); |
| } |
| return true; |
| } |
| |
| bool AppListItemView::OnKeyPressed(const ui::KeyEvent& event) { |
| // Disable space key to press the button. The keyboard events received |
| // by this view are forwarded from a Textfield (SearchBoxView) and key |
| // released events are not forwarded. This leaves the button in pressed |
| // state. |
| if (event.key_code() == ui::VKEY_SPACE) |
| return false; |
| |
| return CustomButton::OnKeyPressed(event); |
| } |
| |
| void AppListItemView::OnMouseReleased(const ui::MouseEvent& event) { |
| CustomButton::OnMouseReleased(event); |
| apps_grid_view_->EndDrag(false); |
| } |
| |
| void AppListItemView::OnMouseCaptureLost() { |
| // We don't cancel the dag on mouse capture lost for windows as entering a |
| // synchronous drag causes mouse capture to be lost and pressing escape |
| // dismisses the app list anyway. |
| #if !defined(OS_WIN) |
| CustomButton::OnMouseCaptureLost(); |
| apps_grid_view_->EndDrag(true); |
| #endif |
| } |
| |
| bool AppListItemView::OnMouseDragged(const ui::MouseEvent& event) { |
| CustomButton::OnMouseDragged(event); |
| if (apps_grid_view_->IsDraggedView(this)) { |
| // If the drag is no longer happening, it could be because this item |
| // got removed, in which case this item has been destroyed. So, bail out |
| // now as there will be nothing else to do anyway as |
| // apps_grid_view_->dragging() will be false. |
| if (!apps_grid_view_->UpdateDragFromItem(AppsGridView::MOUSE, event)) |
| return true; |
| } |
| |
| // Shows dragging UI when it's confirmed without waiting for the timer. |
| if (ui_state_ != UI_STATE_DRAGGING && |
| apps_grid_view_->dragging() && |
| apps_grid_view_->IsDraggedView(this)) { |
| mouse_drag_timer_.Stop(); |
| SetUIState(UI_STATE_DRAGGING); |
| } |
| return true; |
| } |
| |
| void AppListItemView::OnGestureEvent(ui::GestureEvent* event) { |
| switch (event->type()) { |
| case ui::ET_GESTURE_SCROLL_BEGIN: |
| if (touch_dragging_) { |
| apps_grid_view_->InitiateDrag(this, AppsGridView::TOUCH, *event); |
| event->SetHandled(); |
| } |
| break; |
| case ui::ET_GESTURE_SCROLL_UPDATE: |
| if (touch_dragging_ && apps_grid_view_->IsDraggedView(this)) { |
| apps_grid_view_->UpdateDragFromItem(AppsGridView::TOUCH, *event); |
| event->SetHandled(); |
| } |
| break; |
| case ui::ET_GESTURE_SCROLL_END: |
| case ui::ET_SCROLL_FLING_START: |
| if (touch_dragging_) { |
| SetTouchDragging(false); |
| apps_grid_view_->EndDrag(false); |
| event->SetHandled(); |
| } |
| break; |
| case ui::ET_GESTURE_LONG_PRESS: |
| if (!apps_grid_view_->has_dragged_view()) |
| SetTouchDragging(true); |
| event->SetHandled(); |
| break; |
| case ui::ET_GESTURE_LONG_TAP: |
| case ui::ET_GESTURE_END: |
| if (touch_dragging_) |
| SetTouchDragging(false); |
| break; |
| default: |
| break; |
| } |
| if (!event->handled()) |
| CustomButton::OnGestureEvent(event); |
| } |
| |
| void AppListItemView::OnSyncDragEnd() { |
| SetUIState(UI_STATE_NORMAL); |
| } |
| |
| const gfx::Rect& AppListItemView::GetIconBounds() const { |
| return icon_->bounds(); |
| } |
| |
| void AppListItemView::SetDragUIState() { |
| SetUIState(UI_STATE_DRAGGING); |
| } |
| |
| gfx::Rect AppListItemView::GetIconBoundsForTargetViewBounds( |
| const gfx::Rect& target_bounds) { |
| gfx::Rect rect(target_bounds); |
| |
| const int left_right_padding = |
| title_->font_list().GetExpectedTextWidth(kLeftRightPaddingChars); |
| rect.Inset(left_right_padding, kTopPadding, left_right_padding, 0); |
| |
| gfx::Rect icon_bounds(rect.x(), rect.y(), rect.width(), kGridIconDimension); |
| icon_bounds.Inset(gfx::ShadowValue::GetMargin(GetIconShadows())); |
| return icon_bounds; |
| } |
| |
| void AppListItemView::ItemIconChanged() { |
| SetIcon(item_weak_->icon(), item_weak_->has_shadow()); |
| } |
| |
| void AppListItemView::ItemNameChanged() { |
| SetItemName(base::UTF8ToUTF16(item_weak_->GetDisplayName()), |
| base::UTF8ToUTF16(item_weak_->name())); |
| } |
| |
| void AppListItemView::ItemIsInstallingChanged() { |
| SetItemIsInstalling(item_weak_->is_installing()); |
| } |
| |
| void AppListItemView::ItemPercentDownloadedChanged() { |
| SetItemPercentDownloaded(item_weak_->percent_downloaded()); |
| } |
| |
| void AppListItemView::ItemBeingDestroyed() { |
| DCHECK(item_weak_); |
| item_weak_->RemoveObserver(this); |
| item_weak_ = NULL; |
| } |
| |
| } // namespace app_list |