Upstream more layers, decoration title, layer_title_cache

chrome/browser/android/compositor/decoration_title.cc

Index: chrome/browser/android/compositor/decoration_title.cc
diff --git a/chrome/browser/android/compositor/decoration_title.cc b/chrome/browser/android/compositor/decoration_title.cc
new file mode 100644
index 0000000000000000000000000000000000000000..ded630714198e7f6beb0ecc494d2dbd400096a86
--- /dev/null
+++ b/chrome/browser/android/compositor/decoration_title.cc
@@ -0,0 +1,243 @@
+// Copyright 2014 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 "chrome/browser/android/compositor/decoration_title.h"
+
+#include <android/bitmap.h>
+
+#include "base/i18n/rtl.h"
+#include "base/logging.h"
+#include "cc/layers/layer.h"
+#include "cc/layers/ui_resource_layer.h"
+#include "chrome/browser/android/compositor/layer_title_cache.h"
+#include "ui/android/resources/resource_manager.h"
+#include "ui/android/resources/ui_resource_android.h"
+#include "ui/base/l10n/l10n_util_android.h"
+#include "ui/gfx/android/java_bitmap.h"
+#include "ui/gfx/geometry/vector3d_f.h"
+
+namespace chrome {
+namespace android {
+
+DecorationTitle::DecorationTitle(LayerTitleCache* layer_title_cache,
+                                 ui::ResourceManager* resource_manager,
+                                 int title_resource_id,
+                                 int favicon_resource_id,
+                                 int spinner_resource_id,
+                                 int spinner_incognito_resource_id,
+                                 int fade_width,
+                                 int favicon_start_padding,
+                                 int favicon_end_padding,
+                                 bool is_incognito,
+                                 bool is_rtl)
+    : layer_(cc::Layer::Create()),
+      layer_opaque_(cc::UIResourceLayer::Create()),
+      layer_fade_(cc::UIResourceLayer::Create()),
+      layer_favicon_(cc::UIResourceLayer::Create()),
+      title_resource_id_(title_resource_id),
+      favicon_resource_id_(favicon_resource_id),
+      spinner_resource_id_(spinner_resource_id),
+      spinner_incognito_resource_id_(spinner_resource_id),
+      fade_width_(fade_width),
+      spinner_rotation_(0),
+      favicon_start_padding_(favicon_start_padding),
+      favicon_end_padding_(favicon_end_padding),
+      is_incognito_(is_incognito),
+      is_rtl_(is_rtl),
+      is_loading_(false),
+      transform_(new gfx::Transform()),
+      resource_manager_(resource_manager),
+      layer_title_cache_(layer_title_cache) {
+  layer_->AddChild(layer_favicon_);
+  layer_->AddChild(layer_opaque_);
+  layer_->AddChild(layer_fade_);
+}
+
+DecorationTitle::~DecorationTitle() {
+  layer_->RemoveFromParent();
+}
+
+void DecorationTitle::SetResourceManager(
+    ui::ResourceManager* resource_manager) {
+  resource_manager_ = resource_manager;
+}
+
+void DecorationTitle::Update(int title_resource_id,
+                             int favicon_resource_id,
+                             int fade_width,
+                             int favicon_start_padding,
+                             int favicon_end_padding,
+                             bool is_incognito,
+                             bool is_rtl) {
+  title_resource_id_ = title_resource_id;
+  favicon_resource_id_ = favicon_resource_id;
+  is_incognito_ = is_incognito;
+  is_rtl_ = is_rtl;
+  favicon_start_padding_ = favicon_start_padding;
+  favicon_end_padding_ = favicon_end_padding;
+  fade_width_ = fade_width;
+}
+
+void DecorationTitle::SetUIResourceIds() {
+  ui::ResourceManager::Resource* title_resource =
+      resource_manager_->GetResource(ui::ANDROID_RESOURCE_TYPE_DYNAMIC_BITMAP,
+                                     title_resource_id_);
+  if (title_resource) {
+    layer_opaque_->SetUIResourceId(title_resource->ui_resource->id());
+    layer_fade_->SetUIResourceId(title_resource->ui_resource->id());
+    title_size_ = title_resource->size;
+  }
+
+  if (!is_loading_) {
+    ui::ResourceManager::Resource* favicon_resource =
+        resource_manager_->GetResource(ui::ANDROID_RESOURCE_TYPE_DYNAMIC_BITMAP,
+                                       favicon_resource_id_);
+    if (favicon_resource) {
+      layer_favicon_->SetUIResourceId(favicon_resource->ui_resource->id());
+      favicon_size_ = favicon_resource->size;
+    } else {
+      layer_favicon_->SetUIResourceId(0);
+    }
+    layer_favicon_->SetTransform(gfx::Transform());
+  } else {
+    int resource_id =
+        is_incognito_ ? spinner_incognito_resource_id_ : spinner_resource_id_;
+
+    ui::ResourceManager::Resource* spinner_resource =
+        resource_manager_->GetResource(ui::ANDROID_RESOURCE_TYPE_STATIC,
+                                       resource_id);
+
+    if (spinner_resource)
+      layer_favicon_->SetUIResourceId(spinner_resource->ui_resource->id());
+
+    // Rotate about the center of the layer.
+    layer_favicon_->SetTransformOrigin(
+        gfx::Point3F(favicon_size_.width() / 2, favicon_size_.height() / 2, 0));
+  }
+
+  size_ = gfx::Size(title_size_.width() + favicon_size_.width(),
+                    title_size_.height());
+}
+
+void DecorationTitle::SetIsLoading(bool is_loading) {
+  if (is_loading != is_loading_) {
+    is_loading_ = is_loading;
+    SetUIResourceIds();
+  }
+}
+
+void DecorationTitle::SetSpinnerRotation(float rotation) {
+  if (!is_loading_)
+    return;
+  float diff = rotation - spinner_rotation_;
+  spinner_rotation_ = rotation;
+  if (diff != 0) {
+    transform_->RotateAboutZAxis(diff);
+  }
+  layer_favicon_->SetTransform(*transform_.get());
+}
+
+void DecorationTitle::setOpacity(float opacity) {
+  layer_opaque_->SetOpacity(opacity);
+  layer_favicon_->SetOpacity(opacity);
+  layer_fade_->SetOpacity(opacity);
+}
+
+void DecorationTitle::setBounds(const gfx::Size& bounds) {
+  layer_->SetBounds(gfx::Size(bounds.width(), size_.height()));
+
+  if (bounds.GetArea() == 0.f) {
+    layer_->SetHideLayerAndSubtree(true);
+    return;
+  } else {
+    layer_->SetHideLayerAndSubtree(false);
+  }
+
+  // Current implementation assumes there is always enough space
+  // to draw favicon and title fade.
+
+  // Note that favicon positon and title aligning depends on the system locale,
+  // l10n_util::IsLayoutRtl(), while title starting and fade out direction
+  // depends on the title text locale (DecorationTitle::is_rtl_).
+
+  bool sys_rtl = l10n_util::IsLayoutRtl();
+  int favicon_space =
+      favicon_size_.width() + favicon_start_padding_ + favicon_end_padding_;
+  int title_space = std::max(0, bounds.width() - favicon_space - fade_width_);
+  int fade_space = std::max(0, bounds.width() - favicon_space - title_space);
+
+  if (title_size_.width() <= title_space + fade_space)
+    title_space += fade_space;
+
+  if (title_size_.width() <= title_space)
+    fade_space = 0.f;
+
+  float favicon_offset_y = (size_.height() - favicon_size_.height()) / 2.f;
+  float title_offset_y = (size_.height() - title_size_.height()) / 2.f;
+
+  // Step 1. Place favicon.
+  int favicon_x = favicon_start_padding_;
+  if (sys_rtl) {
+    favicon_x = bounds.width() - favicon_size_.width() - favicon_start_padding_;
+  }
+  layer_favicon_->SetIsDrawable(true);
+  layer_favicon_->SetBounds(favicon_size_);
+  layer_favicon_->SetPosition(gfx::PointF(favicon_x, favicon_offset_y));
+
+  // Step 2. Place the opaque title component.
+  if (title_space > 0.f) {
+    // Calculate the title position and size, taking into account both
+    // system and title RTL.
+    int width = std::min(title_space, title_size_.width());
+    int x_offset = sys_rtl ? title_space - width : favicon_space;
+    int x = x_offset + (is_rtl_ ? fade_space : 0);
+
+    // Calculate the UV coordinates taking into account title RTL.
+    float width_percentage = (float)width / title_size_.width();
+    float u1 = is_rtl_ ? 1.f - width_percentage : 0.f;
+    float u2 = is_rtl_ ? 1.f : width_percentage;
+
+    layer_opaque_->SetIsDrawable(true);
+    layer_opaque_->SetBounds(gfx::Size(width, title_size_.height()));
+    layer_opaque_->SetPosition(gfx::PointF(x, title_offset_y));
+    layer_opaque_->SetUV(gfx::PointF(u1, 0.f), gfx::PointF(u2, 1.f));
+  } else {
+    layer_opaque_->SetIsDrawable(false);
+  }
+
+  // Step 3. Place the fade title component.
+  if (fade_space > 0.f) {
+    // Calculate the title position and size, taking into account both
+    // system and title RTL.
+    int x_offset = sys_rtl ? 0 : favicon_space;
+    int x = x_offset + (is_rtl_ ? 0 : title_space);
+    float title_amt = (float)title_space / title_size_.width();
+    float fade_amt = (float)fade_space / title_size_.width();
+
+    // Calculate UV coordinates taking into account title RTL.
+    float u1 = is_rtl_ ? 1.f - title_amt - fade_amt : title_amt;
+    float u2 = is_rtl_ ? 1.f - title_amt : title_amt + fade_amt;
+
+    // Calculate vertex alpha taking into account title RTL.
+    float max_alpha = (float)fade_space / fade_width_;
+    float a1 = is_rtl_ ? 0.f : max_alpha;
+    float a2 = is_rtl_ ? max_alpha : 0.f;
+
+    layer_fade_->SetIsDrawable(true);
+    layer_fade_->SetBounds(gfx::Size(fade_space, title_size_.height()));
+    layer_fade_->SetPosition(gfx::PointF(x, title_offset_y));
+    layer_fade_->SetUV(gfx::PointF(u1, 0.f), gfx::PointF(u2, 1.f));
+    layer_fade_->SetVertexOpacity(a1, a1, a2, a2);
+  } else {
+    layer_fade_->SetIsDrawable(false);
+  }
+}
+
+scoped_refptr<cc::Layer> DecorationTitle::layer() {
+  DCHECK(layer_.get());
+  return layer_;
+}
+
+}  // namespace android
+}  // namespace chrome