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/window.h" 9 #include "ui/aura/window_tree_host.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 18 // ui::LayerDelegate that copies the aura host window's content to a ui::Layer. 19 class BootSplashScreen::CopyHostContentLayerDelegate 20 : public ui::LayerDelegate { 21 public: 22 explicit CopyHostContentLayerDelegate(aura::WindowTreeHost* host) 23 : host_(host) { 24 } 25 26 virtual ~CopyHostContentLayerDelegate() {} 27 28 // ui::LayerDelegate overrides: 29 virtual void OnPaintLayer(gfx::Canvas* canvas) OVERRIDE { 30 // It'd be safer to copy the area to a canvas in the constructor and then 31 // copy from that canvas to this one here, but this appears to work (i.e. we 32 // only call this before we draw our first frame) and it saves us an extra 33 // copy. 34 // TODO(derat): Instead of copying the data, use GLX_EXT_texture_from_pixmap 35 // to create a zero-copy texture (when possible): 36 // https://codereview.chromium.org/10543125 37 #if defined(USE_X11) 38 ui::CopyAreaToCanvas(host_->GetAcceleratedWidget(), 39 host_->GetBounds(), gfx::Point(), canvas); 40 #else 41 // TODO(spang): Figure out what to do here. 42 NOTIMPLEMENTED(); 43 #endif 44 } 45 46 virtual void OnDelegatedFrameDamage( 47 const gfx::Rect& damage_rect_in_dip) OVERRIDE {} 48 49 virtual void OnDeviceScaleFactorChanged(float device_scale_factor) OVERRIDE {} 50 51 virtual base::Closure PrepareForLayerBoundsChange() OVERRIDE { 52 return base::Closure(); 53 } 54 55 private: 56 aura::WindowTreeHost* host_; // not owned 57 58 DISALLOW_COPY_AND_ASSIGN(CopyHostContentLayerDelegate); 59 }; 60 61 BootSplashScreen::BootSplashScreen(aura::WindowTreeHost* host) 62 : layer_delegate_(new CopyHostContentLayerDelegate(host)), 63 layer_(new ui::Layer(ui::LAYER_TEXTURED)) { 64 layer_->set_delegate(layer_delegate_.get()); 65 66 ui::Layer* root_layer = host->window()->layer(); 67 layer_->SetBounds(gfx::Rect(host->window()->bounds().size())); 68 root_layer->Add(layer_.get()); 69 root_layer->StackAtTop(layer_.get()); 70 } 71 72 BootSplashScreen::~BootSplashScreen() { 73 } 74 75 void BootSplashScreen::StartHideAnimation(base::TimeDelta duration) { 76 ui::ScopedLayerAnimationSettings settings(layer_->GetAnimator()); 77 settings.SetTransitionDuration(duration); 78 settings.SetPreemptionStrategy(ui::LayerAnimator::REPLACE_QUEUED_ANIMATIONS); 79 layer_->SetOpacity(0.0f); 80 } 81 82 } // namespace ash 83