diff options
Diffstat (limited to 'chromium/ash/desktop_background/desktop_background_view.cc')
| -rw-r--r-- | chromium/ash/desktop_background/desktop_background_view.cc | 221 |
1 files changed, 0 insertions, 221 deletions
diff --git a/chromium/ash/desktop_background/desktop_background_view.cc b/chromium/ash/desktop_background/desktop_background_view.cc deleted file mode 100644 index 6a7bf82a1f7..00000000000 --- a/chromium/ash/desktop_background/desktop_background_view.cc +++ /dev/null @@ -1,221 +0,0 @@ -// 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 "ash/desktop_background/desktop_background_view.h" - -#include <limits> - -#include "ash/ash_export.h" -#include "ash/desktop_background/desktop_background_controller.h" -#include "ash/desktop_background/desktop_background_widget_controller.h" -#include "ash/desktop_background/user_wallpaper_delegate.h" -#include "ash/display/display_manager.h" -#include "ash/root_window_controller.h" -#include "ash/session_state_delegate.h" -#include "ash/shell.h" -#include "ash/shell_window_ids.h" -#include "ash/wm/window_animations.h" -#include "base/message_loop/message_loop.h" -#include "base/strings/utf_string_conversions.h" -#include "ui/aura/root_window.h" -#include "ui/base/resource/resource_bundle.h" -#include "ui/compositor/layer.h" -#include "ui/gfx/canvas.h" -#include "ui/gfx/image/image.h" -#include "ui/gfx/size_conversions.h" -#include "ui/gfx/transform.h" -#include "ui/views/widget/widget.h" - -namespace ash { -namespace internal { -namespace { - -// For our scaling ratios we need to round positive numbers. -int RoundPositive(double x) { - return static_cast<int>(floor(x + 0.5)); -} - -// A view that controls the child view's layer so that the layer -// always has the same size as the display's original, un-scaled size -// in DIP. The layer then transformed to fit to the virtual screen -// size when laid-out. -// This is to avoid scaling the image at painting time, then scaling -// it back to the screen size in the compositor. -class LayerControlView : public views::View { - public: - explicit LayerControlView(views::View* view) { - AddChildView(view); - view->SetPaintToLayer(true); - } - - // Overrides views::View. - virtual void Layout() OVERRIDE { - gfx::Display display = Shell::GetScreen()->GetDisplayNearestWindow( - GetWidget()->GetNativeView()); - DisplayManager* display_manager = Shell::GetInstance()->display_manager(); - DisplayInfo info = display_manager->GetDisplayInfo(display.id()); - float ui_scale = info.GetEffectiveUIScale(); - gfx::SizeF pixel_size = display.size(); - pixel_size.Scale(1.0f / ui_scale); - gfx::Size rounded_size = gfx::ToCeiledSize(pixel_size); - DCHECK_EQ(1, child_count()); - views::View* child = child_at(0); - child->SetBounds(0, 0, rounded_size.width(), rounded_size.height()); - gfx::Transform transform; - transform.Scale(ui_scale, ui_scale); - child->SetTransform(transform); - } - - private: - DISALLOW_COPY_AND_ASSIGN(LayerControlView); -}; - -} // namespace - -//////////////////////////////////////////////////////////////////////////////// -// DesktopBackgroundView, public: - -DesktopBackgroundView::DesktopBackgroundView() { - set_context_menu_controller(this); -} - -DesktopBackgroundView::~DesktopBackgroundView() { -} - -//////////////////////////////////////////////////////////////////////////////// -// DesktopBackgroundView, views::View overrides: - -void DesktopBackgroundView::OnPaint(gfx::Canvas* canvas) { - // Scale the image while maintaining the aspect ratio, cropping as - // necessary to fill the background. Ideally the image should be larger - // than the largest display supported, if not we will center it rather than - // streching to avoid upsampling artifacts (Note that we could tile too, but - // decided not to do this at the moment). - DesktopBackgroundController* controller = - Shell::GetInstance()->desktop_background_controller(); - gfx::ImageSkia wallpaper = controller->GetWallpaper(); - WallpaperLayout wallpaper_layout = controller->GetWallpaperLayout(); - - gfx::NativeView native_view = GetWidget()->GetNativeView(); - gfx::Display display = gfx::Screen::GetScreenFor(native_view)-> - GetDisplayNearestWindow(native_view); - - DisplayManager* display_manager = Shell::GetInstance()->display_manager(); - DisplayInfo display_info = display_manager->GetDisplayInfo(display.id()); - float scaling = display_info.GetEffectiveUIScale(); - if (scaling <= 1.0f) - scaling = 1.0f; - // Allow scaling up to the UI scaling. - // TODO(oshima): Create separate layer that fits to the image and then - // scale to avoid artifacts and be more efficient when clipped. - gfx::Rect wallpaper_rect( - 0, 0, wallpaper.width() * scaling, wallpaper.height() * scaling); - - if (wallpaper_layout == WALLPAPER_LAYOUT_CENTER_CROPPED && - wallpaper_rect.width() >= width() && - wallpaper_rect.height() >= height()) { - // The dimension with the smallest ratio must be cropped, the other one - // is preserved. Both are set in gfx::Size cropped_size. - double horizontal_ratio = static_cast<double>(width()) / - static_cast<double>(wallpaper.width()); - double vertical_ratio = static_cast<double>(height()) / - static_cast<double>(wallpaper.height()); - - gfx::Size cropped_size; - if (vertical_ratio > horizontal_ratio) { - cropped_size = gfx::Size( - RoundPositive(static_cast<double>(width()) / vertical_ratio), - wallpaper.height()); - } else { - cropped_size = gfx::Size(wallpaper.width(), - RoundPositive(static_cast<double>(height()) / horizontal_ratio)); - } - - gfx::Rect wallpaper_cropped_rect( - 0, 0, wallpaper.width(), wallpaper.height()); - wallpaper_cropped_rect.ClampToCenteredSize(cropped_size); - canvas->DrawImageInt(wallpaper, - wallpaper_cropped_rect.x(), wallpaper_cropped_rect.y(), - wallpaper_cropped_rect.width(), wallpaper_cropped_rect.height(), - 0, 0, width(), height(), - true); - } else if (wallpaper_layout == WALLPAPER_LAYOUT_TILE) { - canvas->TileImageInt(wallpaper, 0, 0, width(), height()); - } else if (wallpaper_layout == WALLPAPER_LAYOUT_STRETCH) { - // This is generally not recommended as it may show artifacts. - canvas->DrawImageInt(wallpaper, 0, 0, wallpaper.width(), - wallpaper.height(), 0, 0, width(), height(), true); - } else { - // Fill with black to make sure that the entire area is opaque. - canvas->FillRect(GetLocalBounds(), SK_ColorBLACK); - // All other are simply centered, and not scaled (but may be clipped). - if (wallpaper.width() && wallpaper.height()) { - canvas->DrawImageInt( - wallpaper, - 0, 0, wallpaper.width(), wallpaper.height(), - (width() - wallpaper_rect.width()) / 2, - (height() - wallpaper_rect.height()) / 2, - wallpaper_rect.width(), - wallpaper_rect.height(), - true); - } - } -} - -bool DesktopBackgroundView::OnMousePressed(const ui::MouseEvent& event) { - return true; -} - -void DesktopBackgroundView::ShowContextMenuForView( - views::View* source, - const gfx::Point& point, - ui::MenuSourceType source_type) { - Shell::GetInstance()->ShowContextMenu(point, source_type); -} - -views::Widget* CreateDesktopBackground(aura::Window* root_window, - int container_id) { - DesktopBackgroundController* controller = - Shell::GetInstance()->desktop_background_controller(); - UserWallpaperDelegate* wallpaper_delegate = - Shell::GetInstance()->user_wallpaper_delegate(); - - views::Widget* desktop_widget = new views::Widget; - views::Widget::InitParams params( - views::Widget::InitParams::TYPE_WINDOW_FRAMELESS); - if (controller->GetWallpaper().isNull()) - params.opacity = views::Widget::InitParams::TRANSLUCENT_WINDOW; - params.parent = root_window->GetChildById(container_id); - desktop_widget->Init(params); - desktop_widget->SetContentsView( - new LayerControlView(new DesktopBackgroundView())); - int animation_type = wallpaper_delegate->GetAnimationType(); - views::corewm::SetWindowVisibilityAnimationType( - desktop_widget->GetNativeView(), animation_type); - - RootWindowController* root_window_controller = - GetRootWindowController(root_window); - - // Enable wallpaper transition for the following cases: - // 1. Initial(OOBE) wallpaper animation. - // 2. Wallpaper fades in from a non empty background. - // 3. From an empty background, chrome transit to a logged in user session. - // 4. From an empty background, guest user logged in. - if (wallpaper_delegate->ShouldShowInitialAnimation() || - root_window_controller->animating_wallpaper_controller() || - Shell::GetInstance()->session_state_delegate()->NumberOfLoggedInUsers()) { - views::corewm::SetWindowVisibilityAnimationTransition( - desktop_widget->GetNativeView(), views::corewm::ANIMATE_SHOW); - } else { - // Disable animation if transition to login screen from an empty background. - views::corewm::SetWindowVisibilityAnimationTransition( - desktop_widget->GetNativeView(), views::corewm::ANIMATE_NONE); - } - - desktop_widget->SetBounds(params.parent->bounds()); - return desktop_widget; -} - -} // namespace internal -} // namespace ash |