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| 1 // Copyright (c) 2011 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 "chrome/browser/download/download_started_animation.h" | |
| 6 | |
| 7 #include "content/browser/tab_contents/tab_contents.h" | |
| 8 #include "content/public/browser/notification_details.h" | |
| 9 #include "content/public/browser/notification_registrar.h" | |
| 10 #include "content/public/browser/notification_source.h" | |
| 11 #include "content/public/browser/notification_types.h" | |
| 12 #include "grit/theme_resources.h" | |
| 13 #include "ui/base/animation/linear_animation.h" | |
| 14 #include "ui/base/resource/resource_bundle.h" | |
| 15 #include "ui/gfx/rect.h" | |
| 16 #include "views/controls/image_view.h" | |
| 17 #include "views/widget/widget.h" | |
| 18 | |
| 19 // How long to spend moving downwards and fading out after waiting. | |
| 20 static const int kMoveTimeMs = 600; | |
| 21 | |
| 22 // The animation framerate. | |
| 23 static const int kFrameRateHz = 60; | |
| 24 | |
| 25 // What fraction of the frame height to move downward from the frame center. | |
| 26 // Note that setting this greater than 0.5 will mean moving past the bottom of | |
| 27 // the frame. | |
| 28 static const double kMoveFraction = 1.0 / 3.0; | |
| 29 | |
| 30 namespace { | |
| 31 | |
| 32 // DownloadStartAnimation creates an animation (which begins running | |
| 33 // immediately) that animates an image downward from the center of the frame | |
| 34 // provided on the constructor, while simultaneously fading it out. To use, | |
| 35 // simply call "new DownloadStartAnimation"; the class cleans itself up when it | |
| 36 // finishes animating. | |
| 37 class DownloadStartedAnimationWin : public ui::LinearAnimation, | |
| 38 public content::NotificationObserver, | |
| 39 public views::ImageView { | |
| 40 public: | |
| 41 explicit DownloadStartedAnimationWin(TabContents* tab_contents); | |
| 42 | |
| 43 private: | |
| 44 // Move the animation to wherever it should currently be. | |
| 45 void Reposition(); | |
| 46 | |
| 47 // Shut down the animation cleanly. | |
| 48 void Close(); | |
| 49 | |
| 50 // Animation | |
| 51 virtual void AnimateToState(double state); | |
| 52 | |
| 53 // content::NotificationObserver | |
| 54 virtual void Observe(int type, | |
| 55 const content::NotificationSource& source, | |
| 56 const content::NotificationDetails& details); | |
| 57 | |
| 58 // We use a HWND for the popup so that it may float above any HWNDs in our UI. | |
| 59 views::Widget* popup_; | |
| 60 | |
| 61 // The content area holding us. | |
| 62 TabContents* tab_contents_; | |
| 63 | |
| 64 // The content area at the start of the animation. We store this so that the | |
| 65 // download shelf's resizing of the content area doesn't cause the animation | |
| 66 // to move around. This means that once started, the animation won't move | |
| 67 // with the parent window, but it's so fast that this shouldn't cause too | |
| 68 // much heartbreak. | |
| 69 gfx::Rect tab_contents_bounds_; | |
| 70 | |
| 71 // A scoped container for notification registries. | |
| 72 content::NotificationRegistrar registrar_; | |
| 73 | |
| 74 DISALLOW_COPY_AND_ASSIGN(DownloadStartedAnimationWin); | |
| 75 }; | |
| 76 | |
| 77 DownloadStartedAnimationWin::DownloadStartedAnimationWin( | |
| 78 TabContents* tab_contents) | |
| 79 : ui::LinearAnimation(kMoveTimeMs, kFrameRateHz, NULL), | |
| 80 popup_(NULL), | |
| 81 tab_contents_(tab_contents) { | |
| 82 static SkBitmap* kDownloadImage = NULL; | |
| 83 if (!kDownloadImage) { | |
| 84 kDownloadImage = ResourceBundle::GetSharedInstance().GetBitmapNamed( | |
| 85 IDR_DOWNLOAD_ANIMATION_BEGIN); | |
| 86 } | |
| 87 | |
| 88 // If we're too small to show the download image, then don't bother - | |
| 89 // the shelf will be enough. | |
| 90 tab_contents_->GetContainerBounds(&tab_contents_bounds_); | |
| 91 if (tab_contents_bounds_.height() < kDownloadImage->height()) | |
| 92 return; | |
| 93 | |
| 94 registrar_.Add( | |
| 95 this, | |
| 96 content::NOTIFICATION_TAB_CONTENTS_HIDDEN, | |
| 97 content::Source<TabContents>(tab_contents_)); | |
| 98 registrar_.Add( | |
| 99 this, | |
| 100 content::NOTIFICATION_TAB_CONTENTS_DESTROYED, | |
| 101 content::Source<TabContents>(tab_contents_)); | |
| 102 | |
| 103 SetImage(kDownloadImage); | |
| 104 | |
| 105 popup_ = new views::Widget; | |
| 106 | |
| 107 views::Widget::InitParams params(views::Widget::InitParams::TYPE_POPUP); | |
| 108 params.transparent = true; | |
| 109 params.accept_events = false; | |
| 110 params.parent = tab_contents_->GetNativeView(); | |
| 111 popup_->Init(params); | |
| 112 popup_->SetOpacity(0x00); | |
| 113 popup_->SetContentsView(this); | |
| 114 Reposition(); | |
| 115 popup_->Show(); | |
| 116 | |
| 117 Start(); | |
| 118 } | |
| 119 | |
| 120 void DownloadStartedAnimationWin::Reposition() { | |
| 121 if (!tab_contents_) | |
| 122 return; | |
| 123 | |
| 124 // Align the image with the bottom left of the web contents (so that it | |
| 125 // points to the newly created download). | |
| 126 gfx::Size size = GetPreferredSize(); | |
| 127 int x = base::i18n::IsRTL() ? | |
| 128 tab_contents_bounds_.right() - size.width() : tab_contents_bounds_.x(); | |
| 129 popup_->SetBounds(gfx::Rect( | |
| 130 x, | |
| 131 static_cast<int>(tab_contents_bounds_.bottom() - | |
| 132 size.height() - size.height() * (1 - GetCurrentValue())), | |
| 133 size.width(), | |
| 134 size.height())); | |
| 135 } | |
| 136 | |
| 137 void DownloadStartedAnimationWin::Close() { | |
| 138 if (!tab_contents_) | |
| 139 return; | |
| 140 | |
| 141 registrar_.Remove( | |
| 142 this, | |
| 143 content::NOTIFICATION_TAB_CONTENTS_HIDDEN, | |
| 144 content::Source<TabContents>(tab_contents_)); | |
| 145 registrar_.Remove( | |
| 146 this, | |
| 147 content::NOTIFICATION_TAB_CONTENTS_DESTROYED, | |
| 148 content::Source<TabContents>(tab_contents_)); | |
| 149 tab_contents_ = NULL; | |
| 150 popup_->Close(); | |
| 151 } | |
| 152 | |
| 153 void DownloadStartedAnimationWin::AnimateToState(double state) { | |
| 154 if (state >= 1.0) { | |
| 155 Close(); | |
| 156 } else { | |
| 157 Reposition(); | |
| 158 | |
| 159 // Start at zero, peak halfway and end at zero. | |
| 160 double opacity = std::min(1.0 - pow(GetCurrentValue() - 0.5, 2) * 4.0, | |
| 161 static_cast<double>(1.0)); | |
| 162 | |
| 163 popup_->SetOpacity( | |
| 164 static_cast<SkColor>(opacity * 255.0)); | |
| 165 SchedulePaint(); // Reposition() calls MoveWindow() which never picks up | |
| 166 // alpha changes, so we need to force a paint. | |
| 167 } | |
| 168 } | |
| 169 | |
| 170 void DownloadStartedAnimationWin::Observe( | |
| 171 int type, | |
| 172 const content::NotificationSource& source, | |
| 173 const content::NotificationDetails& details) { | |
| 174 Close(); | |
| 175 } | |
| 176 | |
| 177 } // namespace | |
| 178 | |
| 179 // static | |
| 180 void DownloadStartedAnimation::Show(TabContents* tab_contents) { | |
| 181 // The animation will delete itself when it's finished or when the tab | |
| 182 // contents is hidden or destroyed. | |
| 183 new DownloadStartedAnimationWin(tab_contents); | |
| 184 } | |
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