gecko/gfx/thebes/gfxWindowsSurface.h

/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 4 -*-
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

#ifndef GFX_WINDOWSSURFACE_H
#define GFX_WINDOWSSURFACE_H

#include "gfxASurface.h"
#include "gfxImageSurface.h"

/* include windows.h for the HWND and HDC definitions that we need. */
#include <windows.h>
/* undefine LoadImage because our code uses that name */
#undef LoadImage

class gfxContext;

class gfxWindowsSurface : public gfxASurface {
public:
    enum {
        FLAG_TAKE_DC = (1 << 0),
        FLAG_FOR_PRINTING = (1 << 1),
        FLAG_IS_TRANSPARENT = (1 << 2)
    };

    gfxWindowsSurface(HWND wnd, uint32_t flags = 0);
    gfxWindowsSurface(HDC dc, uint32_t flags = 0);

    // Create a DIB surface
    gfxWindowsSurface(const gfxIntSize& size,
                      gfxImageFormat imageFormat = ImageFormatRGB24);

    // Create a DDB surface; dc may be nullptr to use the screen DC
    gfxWindowsSurface(HDC dc,
                      const gfxIntSize& size,
                      gfxImageFormat imageFormat = ImageFormatRGB24);

    gfxWindowsSurface(cairo_surface_t *csurf);

    virtual already_AddRefed<gfxASurface> CreateSimilarSurface(gfxContentType aType,
                                                               const gfxIntSize& aSize);

    void InitWithDC(uint32_t flags);

    virtual ~gfxWindowsSurface();

    HDC GetDC() { return mDC; }

    HDC GetDCWithClip(gfxContext *);

    already_AddRefed<gfxImageSurface> GetAsImageSurface();

    already_AddRefed<gfxWindowsSurface> OptimizeToDDB(HDC dc,
                                                      const gfxIntSize& size,
                                                      gfxImageFormat format);

    nsresult BeginPrinting(const nsAString& aTitle, const nsAString& aPrintToFileName);
    nsresult EndPrinting();
    nsresult AbortPrinting();
    nsresult BeginPage();
    nsresult EndPage();

    virtual int32_t GetDefaultContextFlags() const;

    const gfxIntSize GetSize() const;

    void MovePixels(const nsIntRect& aSourceRect,
                    const nsIntPoint& aDestTopLeft)
    {
        FastMovePixels(aSourceRect, aDestTopLeft);
    }

    // The memory used by this surface lives in this process's address space,
    // but not in the heap.
    virtual gfxASurface::MemoryLocation GetMemoryLocation() const;

private:
    void MakeInvalid(gfxIntSize& size);

    bool mOwnsDC;
    bool mForPrinting;

    HDC mDC;
    HWND mWnd;
};

#endif /* GFX_WINDOWSSURFACE_H */