rainmeter-studio/Common/Gfx/CanvasD2D.h
Birunthan Mohanathas 82970d1cce Gfx: Add initial work
Gfx provides support for rendering with both Direct2D and GDI+.
2013-03-25 17:37:20 +02:00

105 lines
3.3 KiB
C++

/*
Copyright (C) 2013 Birunthan Mohanathas
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#ifndef RM_GFX_CANVASD2D_H_
#define RM_GFX_CANVASD2D_H_
#include "Canvas.h"
#include "TextFormatD2D.h"
#include <string>
#include <GdiPlus.h>
#include <d2d1.h>
#include <d2d1helper.h>
#include <dwrite.h>
#include <wincodec.h>
namespace Gfx {
// Provides a Direct2D/DirectWrite implementation of Canvas.
class CanvasD2D : public Canvas
{
public:
CanvasD2D();
~CanvasD2D();
virtual void Resize(int w, int h);
virtual bool BeginDraw();
virtual void EndDraw();
virtual Gdiplus::Graphics& BeginGdiplusContext() override;
virtual void EndGdiplusContext() override;
virtual HDC GetDC() override;
virtual void ReleaseDC(HDC dc) override;
virtual TextFormat* CreateTextFormat() override { return new TextFormatD2D(); }
virtual bool IsTransparentPixel(int x, int y) override;
virtual void SetAntiAliasing(bool enable) override;
virtual void SetTextAntiAliasing(bool enable) override;
virtual void Clear(const Gdiplus::Color& color) override;
virtual void DrawTextW(const WCHAR* str, UINT strLen, const TextFormat& format, Gdiplus::RectF& rect, const Gdiplus::SolidBrush& brush) override;
virtual bool MeasureTextW(const WCHAR* str, UINT strLen, const TextFormat& format, Gdiplus::RectF& rect) override;
virtual bool MeasureTextLinesW(const WCHAR* str, UINT strLen, const TextFormat& format, Gdiplus::RectF& rect, UINT& lines) override;
virtual void DrawBitmap(Gdiplus::Bitmap* bitmap, const Gdiplus::Rect& dstRect, const Gdiplus::Rect& srcRect) override;
virtual void FillRectangle(Gdiplus::Rect& rect, const Gdiplus::SolidBrush& brush) override;
private:
friend class TextFormatD2D;
CanvasD2D(const CanvasD2D& other) {}
static bool Initialize();
static void Finalize();
void DiscardDeviceResources();
void BeginTargetDraw();
void EndTargetDraw();
ID2D1RenderTarget* m_Target;
ID2D1GdiInteropRenderTarget* m_InteropTarget;
IWICBitmap* m_Bitmap;
// GDI+ objects that share the pixel data of m_Bitmap.
Gdiplus::Graphics* m_GdipGraphics;
Gdiplus::Bitmap* m_GdipBitmap;
// If true, the BeginDraw() function of this class has been called and the matching EndDraw()
// has not been called yet.
bool m_BeginDrawCalled;
// If true, the BeginDraw() function of the render target has been called and the matching
// EndDraw() has not been called yet.
bool m_TargetBeginDrawCalled;
static UINT c_Instances;
static ID2D1Factory* c_D2D;
static IDWriteFactory* c_DW;
static IWICImagingFactory* c_WIC;
};
} // namespace Gfx
#endif