Upstream oodles of Chrome for Android code into Chromium.

chrome/browser/android/compositor/layer/tab_handle_layer.cc

+// Copyright 2015 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/layer/tab_handle_layer.h"
+
+#include "base/i18n/rtl.h"
+#include "cc/layers/layer.h"
+#include "cc/layers/solid_color_layer.h"
+#include "chrome/browser/android/compositor/decoration_title.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"
+
+namespace chrome {
+namespace android {
+
+// static
+scoped_refptr<TabHandleLayer> TabHandleLayer::Create(
+    LayerTitleCache* layer_title_cache) {
+  return make_scoped_refptr(new TabHandleLayer(layer_title_cache));
+}
+
+void TabHandleLayer::SetProperties(
+    int id,
+    ui::ResourceManager::Resource* close_button_resource,
+    ui::ResourceManager::Resource* tab_handle_resource,
+    bool foreground,
+    bool close_pressed,
+    float toolbar_width,
+    float x,
+    float y,
+    float width,
+    float height,
+    float content_offset_x,
+    float close_button_alpha,
+    bool is_loading,
+    float spinner_rotation,
+    float brightness,
+    float border_opacity) {
+  if (brightness != brightness_ || foreground != foreground_) {
+    brightness_ = brightness;
+    foreground_ = foreground;
+    cc::FilterOperations filters;
+    if (brightness_ != 1.0f && !foreground_)
+      filters.Append(cc::FilterOperation::CreateBrightnessFilter(brightness_));
+    layer_->SetFilters(filters);
+  }
+
+  float original_x = x;
+  float original_y = y;
+  if (foreground_) {
+    if (!border_->parent()) {
+      layer_->InsertChild(border_, 0);
+      border_->SetIsDrawable(true);
+    }
+    border_->SetBackgroundColor(SK_ColorBLACK);
+    border_->SetPosition(gfx::PointF(0, height - 1));
+    border_->SetBounds(gfx::Size(toolbar_width, 1));
+    border_->SetOpacity(border_opacity);
+
+    x = 0;
+    y = 0;
+  } else if (border_->parent()) {
+    border_->RemoveFromParent();
+  }
+
+  bool is_rtl = l10n_util::IsLayoutRtl();
+
+  float margin_width =
+      tab_handle_resource->size.width() - tab_handle_resource->aperture.width();
+  float margin_height = tab_handle_resource->size.height() -
+                        tab_handle_resource->aperture.height();
+
+  // In the inset case, the |decoration_tab_| nine-patch layer should not have a
+  // margin that is greater than the content size of the layer.  This case can
+  // happen at initialization.  The sizes used below are just temp values until
+  // the real content sizes arrive.
+  if (margin_width >= width) {
+    // Shift the left edge over by the adjusted amount for more
+    // aesthetic animations.
+    x = x - (margin_width - width);
+    width = margin_width;
+  }
+  if (margin_height >= height) {
+    y = y - (margin_height - height);
+    height = margin_height;
+  }
+  gfx::Size tab_bounds(width, height);
+
+  layer_->SetPosition(gfx::Point(x, y));
+  DecorationTitle* title_layer = nullptr;
+  if (layer_title_cache_)
+    title_layer = layer_title_cache_->GetTitleLayer(id);
+
+  if (title_layer) {
+    title_layer->setOpacity(1.0f);
+    unsigned expected_children = 3;
+    if (foreground_)
+      expected_children += 1;
+    title_layer_ = title_layer->layer();
+    if (layer_->children().size() < expected_children) {
+      layer_->AddChild(title_layer_);
+    } else if (layer_->children()[expected_children - 1]->id() !=
+               title_layer_->id()) {
+      layer_->ReplaceChild((layer_->children()[expected_children - 1]).get(),
+                           title_layer_);
+    }
+    title_layer->SetUIResourceIds();
+  } else if (title_layer_.get()) {
+    title_layer_->RemoveFromParent();
+    title_layer_ = nullptr;
+  }
+
+  decoration_tab_->SetUIResourceId(tab_handle_resource->ui_resource->id());
+  decoration_tab_->SetAperture(tab_handle_resource->aperture);
+  decoration_tab_->SetFillCenter(true);
+  decoration_tab_->SetBounds(tab_bounds);
+  decoration_tab_->SetBorder(
+      tab_handle_resource->Border(decoration_tab_->bounds()));
+
+  if (foreground_)
+    decoration_tab_->SetPosition(gfx::PointF(original_x, original_y));
+  else
+    decoration_tab_->SetPosition(gfx::PointF(0, 0));
+
+  close_button_->SetUIResourceId(close_button_resource->ui_resource->id());
+  close_button_->SetBounds(close_button_resource->size);
+  const float padding_right =
+      tab_handle_resource->size.width() - tab_handle_resource->padding.right();
+  const float padding_left = tab_handle_resource->padding.x();
+  const float close_width = close_button_->bounds().width();
+  if (title_layer) {
+    int title_y = tab_handle_resource->padding.y() / 2 + height / 2 -
+                  title_layer->size().height() / 2;
+    int title_x = is_rtl ? padding_left + close_width : padding_left;
+    title_x += is_rtl ? 0 : content_offset_x;
+    title_layer->setBounds(gfx::Size(
+        width - padding_right - padding_left - close_width - content_offset_x,
+        height));
+    if (foreground_) {
+      title_x += original_x;
+      title_y += original_y;
+    }
+    title_layer->layer()->SetPosition(gfx::Point(title_x, title_y));
+    if (is_loading) {
+      title_layer->SetIsLoading(true);
+      title_layer->SetSpinnerRotation(spinner_rotation);
+    } else {
+      title_layer->SetIsLoading(false);
+    }
+  }
+
+  if (close_button_alpha == 0.f) {
+    close_button_->SetIsDrawable(false);
+  } else {
+    close_button_->SetIsDrawable(true);
+    const float close_max_width = close_button_->bounds().width();
+    int close_y = (tab_handle_resource->padding.y() + height) / 2 -
+                  close_button_->bounds().height() / 2;
+    int close_x = is_rtl ? padding_left - close_max_width + close_width
+                         : width - padding_right - close_width;
+    if (foreground_) {
+      close_y += original_y;
+      close_x += original_x;
+    }
+
+    close_button_->SetPosition(gfx::PointF(close_x, close_y));
+    close_button_->SetOpacity(close_button_alpha);
+  }
+}
+
+scoped_refptr<cc::Layer> TabHandleLayer::layer() {
+  return layer_;
+}
+
+TabHandleLayer::TabHandleLayer(LayerTitleCache* layer_title_cache)
+    : layer_title_cache_(layer_title_cache),
+      layer_(cc::Layer::Create()),
+      close_button_(cc::UIResourceLayer::Create()),
+      decoration_tab_(cc::NinePatchLayer::Create()),
+      border_(cc::SolidColorLayer::Create()),
+      brightness_(1.0f),
+      foreground_(false) {
+  decoration_tab_->SetIsDrawable(true);
+  layer_->AddChild(decoration_tab_);
+  layer_->AddChild(close_button_);
+}
+
+TabHandleLayer::~TabHandleLayer() {
+}
+
+}  // namespace android
+}  // namespace chrome