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90 lines
2.8 KiB
C++
90 lines
2.8 KiB
C++
/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 4 -*-
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef GFXGDKNATIVERENDER_H_
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#define GFXGDKNATIVERENDER_H_
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#include <gdk/gdk.h>
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#include "nsSize.h"
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#ifdef MOZ_X11
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#include "gfxXlibNativeRenderer.h"
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#endif
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class gfxASurface;
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class gfxContext;
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/**
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* This class lets us take code that draws into an GDK drawable and lets us
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* use it to draw into any Thebes context. The user should subclass this class,
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* override DrawWithGDK, and then call Draw(). The drawing will be subjected
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* to all Thebes transformations, clipping etc.
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*/
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class gfxGdkNativeRenderer
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#ifdef MOZ_X11
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: private gfxXlibNativeRenderer
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#endif
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{
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public:
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/**
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* Perform the native drawing.
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* @param offsetX draw at this offset into the given drawable
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* @param offsetY draw at this offset into the given drawable
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* @param clipRects an array of rects; clip to the union
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* @param numClipRects the number of rects in the array, or zero if
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* no clipping is required
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*/
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#if (MOZ_WIDGET_GTK == 2)
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virtual nsresult DrawWithGDK(GdkDrawable * drawable, gint offsetX,
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gint offsetY, GdkRectangle * clipRects, uint32_t numClipRects) = 0;
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#endif
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enum {
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// If set, then Draw() is opaque, i.e., every pixel in the intersection
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// of the clipRect and (offset.x,offset.y,bounds.width,bounds.height)
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// will be set and there is no dependence on what the existing pixels
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// in the drawable are set to.
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DRAW_IS_OPAQUE =
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#ifdef MOZ_X11
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gfxXlibNativeRenderer::DRAW_IS_OPAQUE
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#else
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0x1
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#endif
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// If set, then numClipRects can be zero or one.
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// If not set, then numClipRects will be zero.
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, DRAW_SUPPORTS_CLIP_RECT =
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#ifdef MOZ_X11
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gfxXlibNativeRenderer::DRAW_SUPPORTS_CLIP_RECT
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#else
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0x2
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#endif
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};
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/**
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* @param flags see above
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* @param bounds Draw()'s drawing is guaranteed to be restricted to
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* the rectangle (offset.x,offset.y,bounds.width,bounds.height)
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* @param dpy a display to use for the drawing if ctx doesn't have one
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*/
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#if (MOZ_WIDGET_GTK == 2)
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void Draw(gfxContext* ctx, nsIntSize size,
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uint32_t flags, GdkColormap* colormap);
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#endif
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private:
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#ifdef MOZ_X11
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// for gfxXlibNativeRenderer:
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virtual nsresult DrawWithXlib(cairo_surface_t* surface,
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nsIntPoint offset,
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nsIntRect* clipRects, uint32_t numClipRects) MOZ_OVERRIDE;
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#if (MOZ_WIDGET_GTK == 2)
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GdkColormap *mColormap;
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#endif
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#endif
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};
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#endif /*GFXGDKNATIVERENDER_H_*/
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