gfx/canvas_direct2d.cc - chromium/src.git - Git at Google

 // Copyright (c) 2010 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 "gfx/canvas_direct2d.h"

 #include "gfx/rect.h"

 namespace {

 // Converts a SkColor to a ColorF.
 D2D1_COLOR_F SkColorToColorF(SkColor color) {
   return D2D1::ColorF(static_cast<float>(SkColorGetR(color)) / 0xFF,
                       static_cast<float>(SkColorGetG(color)) / 0xFF,
                       static_cast<float>(SkColorGetB(color)) / 0xFF,
                       static_cast<float>(SkColorGetA(color)) / 0xFF);
 }

 D2D1_RECT_F RectToRectF(int x, int y, int w, int h) {
   return D2D1::RectF(static_cast<float>(x), static_cast<float>(y),
                      static_cast<float>(x + w), static_cast<float>(y + h));
 }

 D2D1_RECT_F RectToRectF(const gfx::Rect& rect) {
   return RectToRectF(rect.x(), rect.y(), rect.width(), rect.height());
 }

 D2D1_POINT_2F PointToPoint2F(const gfx::Point& point) {
   return D2D1::Point2F(static_cast<float>(point.x()),
                        static_cast<float>(point.y()));
 }

 D2D1_EXTEND_MODE TileModeToExtendMode(gfx::Canvas::TileMode tile_mode) {
   switch (tile_mode) {
     case gfx::Canvas::TileMode_Clamp:
       return D2D1_EXTEND_MODE_CLAMP;
     case gfx::Canvas::TileMode_Mirror:
       return D2D1_EXTEND_MODE_MIRROR;
     case gfx::Canvas::TileMode_Repeat:
       return D2D1_EXTEND_MODE_WRAP;
     default:
       NOTREACHED() << "Invalid TileMode";
   }
   return D2D1_EXTEND_MODE_CLAMP;
 }

 // A platform wrapper for a Direct2D brush that makes sure the underlying
 // ID2D1Brush COM object is released when this object is destroyed.
 class Direct2DBrush : public gfx::Brush {
  public:
   explicit Direct2DBrush(ID2D1Brush* brush) : brush_(brush) {
   }

   ID2D1Brush* brush() const { return brush_.get(); }

  private:
   ScopedComPtr<ID2D1Brush> brush_;

   DISALLOW_COPY_AND_ASSIGN(Direct2DBrush);
 };


 }  // namespace

 namespace gfx {

 // static
 ID2D1Factory* CanvasDirect2D::d2d1_factory_ = NULL;

 ////////////////////////////////////////////////////////////////////////////////
 // CanvasDirect2D, public:

 CanvasDirect2D::CanvasDirect2D(ID2D1RenderTarget* rt) : rt_(rt) {
   // A RenderState entry is pushed onto the stack to track the clip count prior
   // to any calls to Save*().
   state_.push(RenderState());
   rt_->BeginDraw();
 }

 CanvasDirect2D::~CanvasDirect2D() {
   // Unwind any clips that were pushed outside of any Save*()/Restore() pairs.
   int clip_count = state_.top().clip_count;
   for (int i = 0; i < clip_count; ++i)
     rt_->PopAxisAlignedClip();
   rt_->EndDraw();
 }

 // static
 ID2D1Factory* CanvasDirect2D::GetD2D1Factory() {
   if (!d2d1_factory_)
     D2D1CreateFactory(D2D1_FACTORY_TYPE_SINGLE_THREADED, &d2d1_factory_);
   return d2d1_factory_;
 }

 ////////////////////////////////////////////////////////////////////////////////
 // CanvasDirect2D, Canvas implementation:

 void CanvasDirect2D::Save() {
   SaveInternal(NULL);
 }

 void CanvasDirect2D::SaveLayerAlpha(uint8 alpha) {
   SaveLayerAlpha(alpha, gfx::Rect());
 }

 void CanvasDirect2D::SaveLayerAlpha(uint8 alpha,
                                     const gfx::Rect& layer_bounds) {
   D2D1_RECT_F bounds = D2D1::InfiniteRect();
   if (!layer_bounds.IsEmpty())
     bounds = RectToRectF(layer_bounds);
   ID2D1Layer* layer = NULL;
   HRESULT hr = rt_->CreateLayer(NULL, &layer);
   if (SUCCEEDED(hr)) {
     rt_->PushLayer(D2D1::LayerParameters(bounds,
                                          NULL,
                                          D2D1_ANTIALIAS_MODE_PER_PRIMITIVE,
                                          D2D1::IdentityMatrix(),
                                          static_cast<float>(alpha) / 0xFF,
                                          NULL,
                                          D2D1_LAYER_OPTIONS_NONE),
                    layer);
   }
   SaveInternal(layer);
 }

 void CanvasDirect2D::Restore() {
   ID2D1Layer* layer = state_.top().layer;
   if (layer) {
     rt_->PopLayer();
     layer->Release();
   }

   int clip_count = state_.top().clip_count;
   for (int i = 0; i < clip_count; ++i)
     rt_->PopAxisAlignedClip();

   state_.pop();
   // The state_ stack should never be empty - we should always have at least one
   // entry to hold a clip count when there is no active save/restore entry.
   CHECK(!state_.empty()) << "Called Restore() once too often!";

   rt_->RestoreDrawingState(drawing_state_block_);
 }

 bool CanvasDirect2D::ClipRectInt(int x, int y, int w, int h) {
   rt_->PushAxisAlignedClip(RectToRectF(x, y, w, h),
                            D2D1_ANTIALIAS_MODE_PER_PRIMITIVE);
   // Increment the clip count so the call to PushAxisAlignedClip() can be
   // balanced with a call to PopAxisAlignedClip in the next Restore().
   ++state_.top().clip_count;
   return w > 0 && h > 0;
 }

 void CanvasDirect2D::TranslateInt(int x, int y) {
   D2D1_MATRIX_3X2_F raw;
   rt_->GetTransform(&raw);
   D2D1::Matrix3x2F transform(raw._11, raw._12, raw._21, raw._22, raw._31,
                              raw._32);
   transform = D2D1::Matrix3x2F::Translation(static_cast<float>(x),
                                             static_cast<float>(y)) * transform;
   rt_->SetTransform(transform);
 }

 void CanvasDirect2D::ScaleInt(int x, int y) {
   D2D1_MATRIX_3X2_F raw;
   rt_->GetTransform(&raw);
   D2D1::Matrix3x2F transform(raw._11, raw._12, raw._21, raw._22, raw._31,
                              raw._32);
   transform = D2D1::Matrix3x2F::Scale(static_cast<float>(x),
                                       static_cast<float>(y)) * transform;
   rt_->SetTransform(transform);
 }

 void CanvasDirect2D::FillRectInt(int x, int y, int w, int h,
                                  const SkPaint& paint) {
 }

 void CanvasDirect2D::FillRectInt(const SkColor& color, int x, int y, int w,
                                  int h) {
   ScopedComPtr<ID2D1SolidColorBrush> solid_brush;
   rt_->CreateSolidColorBrush(SkColorToColorF(color), solid_brush.Receive());
   rt_->FillRectangle(RectToRectF(x, y, w, h), solid_brush);
 }

 void CanvasDirect2D::FillRectInt(const gfx::Brush* brush, int x, int y, int w,
                                  int h) {
   const Direct2DBrush* d2d_brush = static_cast<const Direct2DBrush*>(brush);
   rt_->FillRectangle(RectToRectF(x, y, w, h), d2d_brush->brush());
 }

 void CanvasDirect2D::DrawRectInt(const SkColor& color, int x, int y, int w,
                                  int h) {

 }

 void CanvasDirect2D::DrawRectInt(const SkColor& color, int x, int y, int w,
                                  int h, SkXfermode::Mode mode) {

 }

 void CanvasDirect2D::DrawLineInt(const SkColor& color, int x1, int y1, int x2,
                                  int y2) {

 }

 void CanvasDirect2D::DrawBitmapInt(const SkBitmap& bitmap, int x, int y) {
 }

 void CanvasDirect2D::DrawBitmapInt(const SkBitmap& bitmap, int x, int y,
                                    const SkPaint& paint) {

 }

 void CanvasDirect2D::DrawBitmapInt(const SkBitmap& bitmap, int src_x, int src_y,
                                    int src_w, int src_h, int dest_x, int dest_y,
                                    int dest_w, int dest_h, bool filter) {

 }

 void CanvasDirect2D::DrawBitmapInt(const SkBitmap& bitmap, int src_x, int src_y,
                                    int src_w, int src_h, int dest_x, int dest_y,
                                    int dest_w, int dest_h, bool filter,
                                    const SkPaint& paint) {

 }

 void CanvasDirect2D::DrawStringInt(const std::wstring& text,
                                    const gfx::Font& font,
                                    const SkColor& color, int x, int y, int w,
                                    int h) {

 }

 void CanvasDirect2D::DrawStringInt(const std::wstring& text,
                                    const gfx::Font& font,
                                    const SkColor& color,
                                    const gfx::Rect& display_rect) {

 }

 void CanvasDirect2D::DrawStringInt(const std::wstring& text,
                                    const gfx::Font& font,
                                    const SkColor& color,
                                    int x, int y, int w, int h,
                                    int flags) {

 }

 void CanvasDirect2D::DrawFocusRect(int x, int y, int width, int height) {
 }

 void CanvasDirect2D::TileImageInt(const SkBitmap& bitmap, int x, int y, int w,
                                   int h) {
 }

 void CanvasDirect2D::TileImageInt(const SkBitmap& bitmap, int src_x, int src_y,
                                   int dest_x, int dest_y, int w, int h) {

 }

 gfx::NativeDrawingContext CanvasDirect2D::BeginPlatformPaint() {
   DCHECK(!interop_rt_.get());
   interop_rt_.QueryFrom(rt_);
   HDC dc = NULL;
   if (interop_rt_.get())
     interop_rt_->GetDC(D2D1_DC_INITIALIZE_MODE_COPY, &dc);
   return dc;
 }

 void CanvasDirect2D::EndPlatformPaint() {
   DCHECK(interop_rt_.get());
   interop_rt_->ReleaseDC(NULL);
   interop_rt_.release();
 }

 Brush* CanvasDirect2D::CreateLinearGradientBrush(
     const gfx::Point& start_point,
     const gfx::Point& end_point,
     const SkColor colors[],
     const float positions[],
     size_t position_count,
     TileMode tile_mode) {
   ID2D1GradientStopCollection* gradient_stop_collection = NULL;
   D2D1_GRADIENT_STOP* gradient_stops = new D2D1_GRADIENT_STOP[position_count];
   for (size_t i = 0; i < position_count; ++i) {
     gradient_stops[i].color = SkColorToColorF(colors[i]);
     gradient_stops[i].position = positions[i];
   }
   HRESULT hr = rt_->CreateGradientStopCollection(gradient_stops,
       position_count,
       D2D1_GAMMA_2_2,
       TileModeToExtendMode(tile_mode),
       &gradient_stop_collection);
   if (FAILED(hr))
     return NULL;

   ID2D1LinearGradientBrush* brush = NULL;
   hr = rt_->CreateLinearGradientBrush(
       D2D1::LinearGradientBrushProperties(PointToPoint2F(start_point),
                                           PointToPoint2F(end_point)),
       gradient_stop_collection,
       &brush);

   return new Direct2DBrush(brush);
 }

 CanvasSkia* CanvasDirect2D::AsCanvasSkia() {
   return NULL;
 }

 const CanvasSkia* CanvasDirect2D::AsCanvasSkia() const {
   return NULL;
 }

 ////////////////////////////////////////////////////////////////////////////////
 // CanvasDirect2D, private:

 void CanvasDirect2D::SaveInternal(ID2D1Layer* layer) {
   if (!drawing_state_block_)
     GetD2D1Factory()->CreateDrawingStateBlock(drawing_state_block_.Receive());
   rt_->SaveDrawingState(drawing_state_block_.get());
   state_.push(RenderState(layer));
 }

 }  // namespace gfx
	// Copyright (c) 2010 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 "gfx/canvas_direct2d.h"

	#include "gfx/rect.h"

	namespace {

	// Converts a SkColor to a ColorF.
	D2D1_COLOR_F SkColorToColorF(SkColor color) {
	return D2D1::ColorF(static_cast<float>(SkColorGetR(color)) / 0xFF,
	static_cast<float>(SkColorGetG(color)) / 0xFF,
	static_cast<float>(SkColorGetB(color)) / 0xFF,
	static_cast<float>(SkColorGetA(color)) / 0xFF);
	}

	D2D1_RECT_F RectToRectF(int x, int y, int w, int h) {
	return D2D1::RectF(static_cast<float>(x), static_cast<float>(y),
	static_cast<float>(x + w), static_cast<float>(y + h));
	}

	D2D1_RECT_F RectToRectF(const gfx::Rect& rect) {
	return RectToRectF(rect.x(), rect.y(), rect.width(), rect.height());
	}

	D2D1_POINT_2F PointToPoint2F(const gfx::Point& point) {
	return D2D1::Point2F(static_cast<float>(point.x()),
	static_cast<float>(point.y()));
	}

	D2D1_EXTEND_MODE TileModeToExtendMode(gfx::Canvas::TileMode tile_mode) {
	switch (tile_mode) {
	case gfx::Canvas::TileMode_Clamp:
	return D2D1_EXTEND_MODE_CLAMP;
	case gfx::Canvas::TileMode_Mirror:
	return D2D1_EXTEND_MODE_MIRROR;
	case gfx::Canvas::TileMode_Repeat:
	return D2D1_EXTEND_MODE_WRAP;
	default:
	NOTREACHED() << "Invalid TileMode";
	}
	return D2D1_EXTEND_MODE_CLAMP;
	}

	// A platform wrapper for a Direct2D brush that makes sure the underlying
	// ID2D1Brush COM object is released when this object is destroyed.
	class Direct2DBrush : public gfx::Brush {
	public:
	explicit Direct2DBrush(ID2D1Brush* brush) : brush_(brush) {
	}

	ID2D1Brush* brush() const { return brush_.get(); }

	private:
	ScopedComPtr<ID2D1Brush> brush_;

	DISALLOW_COPY_AND_ASSIGN(Direct2DBrush);
	};


	} // namespace

	namespace gfx {

	// static
	ID2D1Factory* CanvasDirect2D::d2d1_factory_ = NULL;

	////////////////////////////////////////////////////////////////////////////////
	// CanvasDirect2D, public:

	CanvasDirect2D::CanvasDirect2D(ID2D1RenderTarget* rt) : rt_(rt) {
	// A RenderState entry is pushed onto the stack to track the clip count prior
	// to any calls to Save*().
	state_.push(RenderState());
	rt_->BeginDraw();
	}

	CanvasDirect2D::~CanvasDirect2D() {
	// Unwind any clips that were pushed outside of any Save*()/Restore() pairs.
	int clip_count = state_.top().clip_count;
	for (int i = 0; i < clip_count; ++i)
	rt_->PopAxisAlignedClip();
	rt_->EndDraw();
	}

	// static
	ID2D1Factory* CanvasDirect2D::GetD2D1Factory() {
	if (!d2d1_factory_)
	D2D1CreateFactory(D2D1_FACTORY_TYPE_SINGLE_THREADED, &d2d1_factory_);
	return d2d1_factory_;
	}

	////////////////////////////////////////////////////////////////////////////////
	// CanvasDirect2D, Canvas implementation:

	void CanvasDirect2D::Save() {
	SaveInternal(NULL);
	}

	void CanvasDirect2D::SaveLayerAlpha(uint8 alpha) {
	SaveLayerAlpha(alpha, gfx::Rect());
	}

	void CanvasDirect2D::SaveLayerAlpha(uint8 alpha,
	const gfx::Rect& layer_bounds) {
	D2D1_RECT_F bounds = D2D1::InfiniteRect();
	if (!layer_bounds.IsEmpty())
	bounds = RectToRectF(layer_bounds);
	ID2D1Layer* layer = NULL;
	HRESULT hr = rt_->CreateLayer(NULL, &layer);
	if (SUCCEEDED(hr)) {
	rt_->PushLayer(D2D1::LayerParameters(bounds,
	NULL,
	D2D1_ANTIALIAS_MODE_PER_PRIMITIVE,
	D2D1::IdentityMatrix(),
	static_cast<float>(alpha) / 0xFF,
	NULL,
	D2D1_LAYER_OPTIONS_NONE),
	layer);
	}
	SaveInternal(layer);
	}

	void CanvasDirect2D::Restore() {
	ID2D1Layer* layer = state_.top().layer;
	if (layer) {
	rt_->PopLayer();
	layer->Release();
	}

	int clip_count = state_.top().clip_count;
	for (int i = 0; i < clip_count; ++i)
	rt_->PopAxisAlignedClip();

	state_.pop();
	// The state_ stack should never be empty - we should always have at least one
	// entry to hold a clip count when there is no active save/restore entry.
	CHECK(!state_.empty()) << "Called Restore() once too often!";

	rt_->RestoreDrawingState(drawing_state_block_);
	}

	bool CanvasDirect2D::ClipRectInt(int x, int y, int w, int h) {
	rt_->PushAxisAlignedClip(RectToRectF(x, y, w, h),
	D2D1_ANTIALIAS_MODE_PER_PRIMITIVE);
	// Increment the clip count so the call to PushAxisAlignedClip() can be
	// balanced with a call to PopAxisAlignedClip in the next Restore().
	++state_.top().clip_count;
	return w > 0 && h > 0;
	}

	void CanvasDirect2D::TranslateInt(int x, int y) {
	D2D1_MATRIX_3X2_F raw;
	rt_->GetTransform(&raw);
	D2D1::Matrix3x2F transform(raw._11, raw._12, raw._21, raw._22, raw._31,
	raw._32);
	transform = D2D1::Matrix3x2F::Translation(static_cast<float>(x),
	static_cast<float>(y)) * transform;
	rt_->SetTransform(transform);
	}

	void CanvasDirect2D::ScaleInt(int x, int y) {
	D2D1_MATRIX_3X2_F raw;
	rt_->GetTransform(&raw);
	D2D1::Matrix3x2F transform(raw._11, raw._12, raw._21, raw._22, raw._31,
	raw._32);
	transform = D2D1::Matrix3x2F::Scale(static_cast<float>(x),
	static_cast<float>(y)) * transform;
	rt_->SetTransform(transform);
	}

	void CanvasDirect2D::FillRectInt(int x, int y, int w, int h,
	const SkPaint& paint) {
	}

	void CanvasDirect2D::FillRectInt(const SkColor& color, int x, int y, int w,
	int h) {
	ScopedComPtr<ID2D1SolidColorBrush> solid_brush;
	rt_->CreateSolidColorBrush(SkColorToColorF(color), solid_brush.Receive());
	rt_->FillRectangle(RectToRectF(x, y, w, h), solid_brush);
	}

	void CanvasDirect2D::FillRectInt(const gfx::Brush* brush, int x, int y, int w,
	int h) {
	const Direct2DBrush* d2d_brush = static_cast<const Direct2DBrush*>(brush);
	rt_->FillRectangle(RectToRectF(x, y, w, h), d2d_brush->brush());
	}

	void CanvasDirect2D::DrawRectInt(const SkColor& color, int x, int y, int w,
	int h) {

	}

	void CanvasDirect2D::DrawRectInt(const SkColor& color, int x, int y, int w,
	int h, SkXfermode::Mode mode) {

	}

	void CanvasDirect2D::DrawLineInt(const SkColor& color, int x1, int y1, int x2,
	int y2) {

	}

	void CanvasDirect2D::DrawBitmapInt(const SkBitmap& bitmap, int x, int y) {
	}

	void CanvasDirect2D::DrawBitmapInt(const SkBitmap& bitmap, int x, int y,
	const SkPaint& paint) {

	}

	void CanvasDirect2D::DrawBitmapInt(const SkBitmap& bitmap, int src_x, int src_y,
	int src_w, int src_h, int dest_x, int dest_y,
	int dest_w, int dest_h, bool filter) {

	}

	void CanvasDirect2D::DrawBitmapInt(const SkBitmap& bitmap, int src_x, int src_y,
	int src_w, int src_h, int dest_x, int dest_y,
	int dest_w, int dest_h, bool filter,
	const SkPaint& paint) {

	}

	void CanvasDirect2D::DrawStringInt(const std::wstring& text,
	const gfx::Font& font,
	const SkColor& color, int x, int y, int w,
	int h) {

	}

	void CanvasDirect2D::DrawStringInt(const std::wstring& text,
	const gfx::Font& font,
	const SkColor& color,
	const gfx::Rect& display_rect) {

	}

	void CanvasDirect2D::DrawStringInt(const std::wstring& text,
	const gfx::Font& font,
	const SkColor& color,
	int x, int y, int w, int h,
	int flags) {

	}

	void CanvasDirect2D::DrawFocusRect(int x, int y, int width, int height) {
	}

	void CanvasDirect2D::TileImageInt(const SkBitmap& bitmap, int x, int y, int w,
	int h) {
	}

	void CanvasDirect2D::TileImageInt(const SkBitmap& bitmap, int src_x, int src_y,
	int dest_x, int dest_y, int w, int h) {

	}

	gfx::NativeDrawingContext CanvasDirect2D::BeginPlatformPaint() {
	DCHECK(!interop_rt_.get());
	interop_rt_.QueryFrom(rt_);
	HDC dc = NULL;
	if (interop_rt_.get())
	interop_rt_->GetDC(D2D1_DC_INITIALIZE_MODE_COPY, &dc);
	return dc;
	}

	void CanvasDirect2D::EndPlatformPaint() {
	DCHECK(interop_rt_.get());
	interop_rt_->ReleaseDC(NULL);
	interop_rt_.release();
	}

	Brush* CanvasDirect2D::CreateLinearGradientBrush(
	const gfx::Point& start_point,
	const gfx::Point& end_point,
	const SkColor colors[],
	const float positions[],
	size_t position_count,
	TileMode tile_mode) {
	ID2D1GradientStopCollection* gradient_stop_collection = NULL;
	D2D1_GRADIENT_STOP* gradient_stops = new D2D1_GRADIENT_STOP[position_count];
	for (size_t i = 0; i < position_count; ++i) {
	gradient_stops[i].color = SkColorToColorF(colors[i]);
	gradient_stops[i].position = positions[i];
	}
	HRESULT hr = rt_->CreateGradientStopCollection(gradient_stops,
	position_count,
	D2D1_GAMMA_2_2,
	TileModeToExtendMode(tile_mode),
	&gradient_stop_collection);
	if (FAILED(hr))
	return NULL;

	ID2D1LinearGradientBrush* brush = NULL;
	hr = rt_->CreateLinearGradientBrush(
	D2D1::LinearGradientBrushProperties(PointToPoint2F(start_point),
	PointToPoint2F(end_point)),
	gradient_stop_collection,
	&brush);

	return new Direct2DBrush(brush);
	}

	CanvasSkia* CanvasDirect2D::AsCanvasSkia() {
	return NULL;
	}

	const CanvasSkia* CanvasDirect2D::AsCanvasSkia() const {
	return NULL;
	}

	////////////////////////////////////////////////////////////////////////////////
	// CanvasDirect2D, private:

	void CanvasDirect2D::SaveInternal(ID2D1Layer* layer) {
	if (!drawing_state_block_)
	GetD2D1Factory()->CreateDrawingStateBlock(drawing_state_block_.Receive());
	rt_->SaveDrawingState(drawing_state_block_.get());
	state_.push(RenderState(layer));
	}

	} // namespace gfx