1 // Copyright 2013 The Chromium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #include "ash/wm/boot_splash_screen_chromeos.h" 6 7 #include "third_party/skia/include/core/SkBitmap.h" 8 #include "ui/aura/root_window.h" 9 #include "ui/aura/window.h" 10 #include "ui/base/x/x11_util.h" 11 #include "ui/compositor/layer.h" 12 #include "ui/compositor/layer_type.h" 13 #include "ui/compositor/scoped_layer_animation_settings.h" 14 #include "ui/gfx/canvas.h" 15 16 namespace ash { 17 namespace internal { 18 19 // ui::LayerDelegate that copies the aura host window's content to a ui::Layer. 20 class BootSplashScreen::CopyHostContentLayerDelegate 21 : public ui::LayerDelegate { 22 public: CopyHostContentLayerDelegate(aura::RootWindow * root_window)23 explicit CopyHostContentLayerDelegate(aura::RootWindow* root_window) 24 : root_window_(root_window) { 25 } 26 ~CopyHostContentLayerDelegate()27 virtual ~CopyHostContentLayerDelegate() {} 28 29 // ui::LayerDelegate overrides: OnPaintLayer(gfx::Canvas * canvas)30 virtual void OnPaintLayer(gfx::Canvas* canvas) OVERRIDE { 31 // It'd be safer to copy the area to a canvas in the constructor and then 32 // copy from that canvas to this one here, but this appears to work (i.e. we 33 // only call this before we draw our first frame) and it saves us an extra 34 // copy. 35 // TODO(derat): Instead of copying the data, use GLX_EXT_texture_from_pixmap 36 // to create a zero-copy texture (when possible): 37 // https://codereview.chromium.org/10543125 38 ui::CopyAreaToCanvas(root_window_->host()->GetAcceleratedWidget(), 39 root_window_->host()->GetBounds(), gfx::Point(), canvas); 40 } 41 OnDeviceScaleFactorChanged(float device_scale_factor)42 virtual void OnDeviceScaleFactorChanged(float device_scale_factor) OVERRIDE {} 43 PrepareForLayerBoundsChange()44 virtual base::Closure PrepareForLayerBoundsChange() OVERRIDE { 45 return base::Closure(); 46 } 47 48 private: 49 aura::RootWindow* root_window_; // not owned 50 51 DISALLOW_COPY_AND_ASSIGN(CopyHostContentLayerDelegate); 52 }; 53 BootSplashScreen(aura::RootWindow * root_window)54BootSplashScreen::BootSplashScreen(aura::RootWindow* root_window) 55 : layer_delegate_(new CopyHostContentLayerDelegate(root_window)), 56 layer_(new ui::Layer(ui::LAYER_TEXTURED)) { 57 layer_->set_delegate(layer_delegate_.get()); 58 59 ui::Layer* root_layer = root_window->window()->layer(); 60 layer_->SetBounds(gfx::Rect(root_layer->bounds().size())); 61 root_layer->Add(layer_.get()); 62 root_layer->StackAtTop(layer_.get()); 63 } 64 ~BootSplashScreen()65BootSplashScreen::~BootSplashScreen() { 66 } 67 StartHideAnimation(base::TimeDelta duration)68void BootSplashScreen::StartHideAnimation(base::TimeDelta duration) { 69 ui::ScopedLayerAnimationSettings settings(layer_->GetAnimator()); 70 settings.SetTransitionDuration(duration); 71 settings.SetPreemptionStrategy(ui::LayerAnimator::REPLACE_QUEUED_ANIMATIONS); 72 layer_->SetOpacity(0.0f); 73 } 74 75 } // namespace internal 76 } // namespace ash 77