chrome/browser/android/compositor/decoration_title.cc

   1 // Copyright 2014 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/android/compositor/decoration_title.h"
   6
   7 #include <android/bitmap.h>
   8
   9 #include "base/i18n/rtl.h"
  10 #include "base/logging.h"
  11 #include "cc/layers/layer.h"
  12 #include "cc/layers/ui_resource_layer.h"
  13 #include "chrome/browser/android/compositor/layer_title_cache.h"
  14 #include "ui/android/resources/resource_manager.h"
  15 #include "ui/android/resources/ui_resource_android.h"
  16 #include "ui/base/l10n/l10n_util_android.h"
  17 #include "ui/gfx/android/java_bitmap.h"
  18 #include "ui/gfx/geometry/vector3d_f.h"
  19
  20 namespace chrome {
  21 namespace android {
  22
  23 DecorationTitle::DecorationTitle(LayerTitleCache* layer_title_cache,
  24                                  ui::ResourceManager* resource_manager,
  25                                  int title_resource_id,
  26                                  int favicon_resource_id,
  27                                  int spinner_resource_id,
  28                                  int spinner_incognito_resource_id,
  29                                  int fade_width,
  30                                  int favicon_start_padding,
  31                                  int favicon_end_padding,
  32                                  bool is_incognito,
  33                                  bool is_rtl)
  34     : layer_(cc::Layer::Create()),
  35       layer_opaque_(cc::UIResourceLayer::Create()),
  36       layer_fade_(cc::UIResourceLayer::Create()),
  37       layer_favicon_(cc::UIResourceLayer::Create()),
  38       title_resource_id_(title_resource_id),
  39       favicon_resource_id_(favicon_resource_id),
  40       spinner_resource_id_(spinner_resource_id),
  41       spinner_incognito_resource_id_(spinner_resource_id),
  42       fade_width_(fade_width),
  43       spinner_rotation_(0),
  44       favicon_start_padding_(favicon_start_padding),
  45       favicon_end_padding_(favicon_end_padding),
  46       is_incognito_(is_incognito),
  47       is_rtl_(is_rtl),
  48       is_loading_(false),
  49       transform_(new gfx::Transform()),
  50       resource_manager_(resource_manager),
  51       layer_title_cache_(layer_title_cache) {
  52   layer_->AddChild(layer_favicon_);
  53   layer_->AddChild(layer_opaque_);
  54   layer_->AddChild(layer_fade_);
  55 }
  56
  57 DecorationTitle::~DecorationTitle() {
  58   layer_->RemoveFromParent();
  59 }
  60
  61 void DecorationTitle::SetResourceManager(
  62     ui::ResourceManager* resource_manager) {
  63   resource_manager_ = resource_manager;
  64 }
  65
  66 void DecorationTitle::Update(int title_resource_id,
  67                              int favicon_resource_id,
  68                              int fade_width,
  69                              int favicon_start_padding,
  70                              int favicon_end_padding,
  71                              bool is_incognito,
  72                              bool is_rtl) {
  73   title_resource_id_ = title_resource_id;
  74   favicon_resource_id_ = favicon_resource_id;
  75   is_incognito_ = is_incognito;
  76   is_rtl_ = is_rtl;
  77   favicon_start_padding_ = favicon_start_padding;
  78   favicon_end_padding_ = favicon_end_padding;
  79   fade_width_ = fade_width;
  80 }
  81
  82 void DecorationTitle::SetUIResourceIds() {
  83   ui::ResourceManager::Resource* title_resource =
  84       resource_manager_->GetResource(ui::ANDROID_RESOURCE_TYPE_DYNAMIC_BITMAP,
  85                                      title_resource_id_);
  86   if (title_resource) {
  87     layer_opaque_->SetUIResourceId(title_resource->ui_resource->id());
  88     layer_fade_->SetUIResourceId(title_resource->ui_resource->id());
  89     title_size_ = title_resource->size;
  90   }
  91
  92   if (!is_loading_) {
  93     ui::ResourceManager::Resource* favicon_resource =
  94         resource_manager_->GetResource(ui::ANDROID_RESOURCE_TYPE_DYNAMIC_BITMAP,
  95                                        favicon_resource_id_);
  96     if (favicon_resource) {
  97       layer_favicon_->SetUIResourceId(favicon_resource->ui_resource->id());
  98       favicon_size_ = favicon_resource->size;
  99     } else {
 100       layer_favicon_->SetUIResourceId(0);
 101     }
 102     layer_favicon_->SetTransform(gfx::Transform());
 103   } else {
 104     int resource_id =
 105         is_incognito_ ? spinner_incognito_resource_id_ : spinner_resource_id_;
 106
 107     ui::ResourceManager::Resource* spinner_resource =
 108         resource_manager_->GetResource(ui::ANDROID_RESOURCE_TYPE_STATIC,
 109                                        resource_id);
 110
 111     if (spinner_resource)
 112       layer_favicon_->SetUIResourceId(spinner_resource->ui_resource->id());
 113
 114     // Rotate about the center of the layer.
 115     layer_favicon_->SetTransformOrigin(
 116         gfx::Point3F(favicon_size_.width() / 2, favicon_size_.height() / 2, 0));
 117   }
 118
 119   size_ = gfx::Size(title_size_.width() + favicon_size_.width(),
 120                     title_size_.height());
 121 }
 122
 123 void DecorationTitle::SetIsLoading(bool is_loading) {
 124   if (is_loading != is_loading_) {
 125     is_loading_ = is_loading;
 126     SetUIResourceIds();
 127   }
 128 }
 129
 130 void DecorationTitle::SetSpinnerRotation(float rotation) {
 131   if (!is_loading_)
 132     return;
 133   float diff = rotation - spinner_rotation_;
 134   spinner_rotation_ = rotation;
 135   if (diff != 0) {
 136     transform_->RotateAboutZAxis(diff);
 137   }
 138   layer_favicon_->SetTransform(*transform_.get());
 139 }
 140
 141 void DecorationTitle::setOpacity(float opacity) {
 142   layer_opaque_->SetOpacity(opacity);
 143   layer_favicon_->SetOpacity(opacity);
 144   layer_fade_->SetOpacity(opacity);
 145 }
 146
 147 void DecorationTitle::setBounds(const gfx::Size& bounds) {
 148   layer_->SetBounds(gfx::Size(bounds.width(), size_.height()));
 149
 150   if (bounds.GetArea() == 0.f) {
 151     layer_->SetHideLayerAndSubtree(true);
 152     return;
 153   } else {
 154     layer_->SetHideLayerAndSubtree(false);
 155   }
 156
 157   // Current implementation assumes there is always enough space
 158   // to draw favicon and title fade.
 159
 160   // Note that favicon positon and title aligning depends on the system locale,
 161   // l10n_util::IsLayoutRtl(), while title starting and fade out direction
 162   // depends on the title text locale (DecorationTitle::is_rtl_).
 163
 164   bool sys_rtl = l10n_util::IsLayoutRtl();
 165   int favicon_space =
 166       favicon_size_.width() + favicon_start_padding_ + favicon_end_padding_;
 167   int title_space = std::max(0, bounds.width() - favicon_space - fade_width_);
 168   int fade_space = std::max(0, bounds.width() - favicon_space - title_space);
 169
 170   if (title_size_.width() <= title_space + fade_space)
 171     title_space += fade_space;
 172
 173   if (title_size_.width() <= title_space)
 174     fade_space = 0.f;
 175
 176   float favicon_offset_y = (size_.height() - favicon_size_.height()) / 2.f;
 177   float title_offset_y = (size_.height() - title_size_.height()) / 2.f;
 178
 179   // Step 1. Place favicon.
 180   int favicon_x = favicon_start_padding_;
 181   if (sys_rtl) {
 182     favicon_x = bounds.width() - favicon_size_.width() - favicon_start_padding_;
 183   }
 184   layer_favicon_->SetIsDrawable(true);
 185   layer_favicon_->SetBounds(favicon_size_);
 186   layer_favicon_->SetPosition(gfx::PointF(favicon_x, favicon_offset_y));
 187
 188   // Step 2. Place the opaque title component.
 189   if (title_space > 0.f) {
 190     // Calculate the title position and size, taking into account both
 191     // system and title RTL.
 192     int width = std::min(title_space, title_size_.width());
 193     int x_offset = sys_rtl ? title_space - width : favicon_space;
 194     int x = x_offset + (is_rtl_ ? fade_space : 0);
 195
 196     // Calculate the UV coordinates taking into account title RTL.
 197     float width_percentage = (float)width / title_size_.width();
 198     float u1 = is_rtl_ ? 1.f - width_percentage : 0.f;
 199     float u2 = is_rtl_ ? 1.f : width_percentage;
 200
 201     layer_opaque_->SetIsDrawable(true);
 202     layer_opaque_->SetBounds(gfx::Size(width, title_size_.height()));
 203     layer_opaque_->SetPosition(gfx::PointF(x, title_offset_y));
 204     layer_opaque_->SetUV(gfx::PointF(u1, 0.f), gfx::PointF(u2, 1.f));
 205   } else {
 206     layer_opaque_->SetIsDrawable(false);
 207   }
 208
 209   // Step 3. Place the fade title component.
 210   if (fade_space > 0.f) {
 211     // Calculate the title position and size, taking into account both
 212     // system and title RTL.
 213     int x_offset = sys_rtl ? 0 : favicon_space;
 214     int x = x_offset + (is_rtl_ ? 0 : title_space);
 215     float title_amt = (float)title_space / title_size_.width();
 216     float fade_amt = (float)fade_space / title_size_.width();
 217
 218     // Calculate UV coordinates taking into account title RTL.
 219     float u1 = is_rtl_ ? 1.f - title_amt - fade_amt : title_amt;
 220     float u2 = is_rtl_ ? 1.f - title_amt : title_amt + fade_amt;
 221
 222     // Calculate vertex alpha taking into account title RTL.
 223     float max_alpha = (float)fade_space / fade_width_;
 224     float a1 = is_rtl_ ? 0.f : max_alpha;
 225     float a2 = is_rtl_ ? max_alpha : 0.f;
 226
 227     layer_fade_->SetIsDrawable(true);
 228     layer_fade_->SetBounds(gfx::Size(fade_space, title_size_.height()));
 229     layer_fade_->SetPosition(gfx::PointF(x, title_offset_y));
 230     layer_fade_->SetUV(gfx::PointF(u1, 0.f), gfx::PointF(u2, 1.f));
 231     layer_fade_->SetVertexOpacity(a1, a1, a2, a2);
 232   } else {
 233     layer_fade_->SetIsDrawable(false);
 234   }
 235 }
 236
 237 scoped_refptr<cc::Layer> DecorationTitle::layer() {
 238   DCHECK(layer_.get());
 239   return layer_;
 240 }
 241
 242 }  // namespace android
 243 }  // namespace chrome