chrome/browser/android/compositor/decoration_title.cc - chromium/src - Git at Google

 // 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 "cc/resources/scoped_ui_resource.h"
 #include "content/public/browser/android/compositor.h"
 #include "ui/android/resources/resource_manager.h"
 #include "ui/base/l10n/l10n_util_android.h"
 #include "ui/gfx/android/java_bitmap.h"
 #include "ui/gfx/geometry/vector3d_f.h"

 namespace android {

 DecorationTitle::DecorationTitle(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_incognito_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_->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::SetFaviconResourceId(int favicon_resource_id) {
   favicon_resource_id_ = favicon_resource_id;
 }

 void DecorationTitle::SetUIResourceIds() {
   ui::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::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::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;
   }
   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
	// 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 "cc/resources/scoped_ui_resource.h"
	#include "content/public/browser/android/compositor.h"
	#include "ui/android/resources/resource_manager.h"
	#include "ui/base/l10n/l10n_util_android.h"
	#include "ui/gfx/android/java_bitmap.h"
	#include "ui/gfx/geometry/vector3d_f.h"

	namespace android {

	DecorationTitle::DecorationTitle(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_incognito_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_->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::SetFaviconResourceId(int favicon_resource_id) {
	favicon_resource_id_ = favicon_resource_id;
	}

	void DecorationTitle::SetUIResourceIds() {
	ui::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::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::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;
	}
	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