1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/gfx/thebes/gfxQtNativeRenderer.h Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,70 @@
1.4 +/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 4 -*-
1.5 + * This Source Code Form is subject to the terms of the Mozilla Public
1.6 + * License, v. 2.0. If a copy of the MPL was not distributed with this
1.7 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
1.8 +
1.9 +#ifndef GFXQTNATIVERENDER_H_
1.10 +#define GFXQTNATIVERENDER_H_
1.11 +
1.12 +#include "gfxColor.h"
1.13 +#include "gfxContext.h"
1.14 +#include "gfxXlibSurface.h"
1.15 +
1.16 +class QRect;
1.17 +struct nsIntRect;
1.18 +
1.19 +/**
1.20 + * This class lets us take code that draws into an Xlib surface drawable and lets us
1.21 + * use it to draw into any Thebes context. The user should subclass this class,
1.22 + * override NativeDraw, and then call Draw(). The drawing will be subjected
1.23 + * to all Thebes transformations, clipping etc.
1.24 + */
1.25 +class gfxQtNativeRenderer {
1.26 +public:
1.27 + /**
1.28 + * Perform the native drawing.
1.29 + * @param offsetX draw at this offset into the given drawable
1.30 + * @param offsetY draw at this offset into the given drawable
1.31 + * @param clipRects an array of rects; clip to the union
1.32 + * @param numClipRects the number of rects in the array, or zero if
1.33 + * no clipping is required
1.34 + */
1.35 + virtual nsresult DrawWithXlib(cairo_surface_t* surface,
1.36 + nsIntPoint offset,
1.37 + nsIntRect* clipRects, uint32_t numClipRects) = 0;
1.38 +
1.39 + enum {
1.40 + // If set, then Draw() is opaque, i.e., every pixel in the intersection
1.41 + // of the clipRect and (offset.x,offset.y,bounds.width,bounds.height)
1.42 + // will be set and there is no dependence on what the existing pixels
1.43 + // in the drawable are set to.
1.44 + DRAW_IS_OPAQUE = 0x01,
1.45 + // If set, then numClipRects can be zero or one
1.46 + DRAW_SUPPORTS_CLIP_RECT = 0x04,
1.47 + // If set, then numClipRects can be any value. If neither this
1.48 + // nor CLIP_RECT are set, then numClipRects will be zero
1.49 + DRAW_SUPPORTS_CLIP_LIST = 0x08,
1.50 + // If set, then the visual passed in can be any visual, otherwise the
1.51 + // visual passed in must be the default visual for dpy's default screen
1.52 + DRAW_SUPPORTS_ALTERNATE_VISUAL = 0x10,
1.53 + // If set, then the Screen 'screen' in the callback can be different
1.54 + // from the default Screen of the display passed to 'Draw' and can be
1.55 + // on a different display.
1.56 + DRAW_SUPPORTS_ALTERNATE_SCREEN = 0x20
1.57 + };
1.58 +
1.59 + /**
1.60 + * @param flags see above
1.61 + * @param size Draw()'s drawing is guaranteed to be restricted to
1.62 + * the rectangle (offset.x,offset.y,size.width,size.height)
1.63 + * @param dpy a display to use for the drawing if ctx doesn't have one
1.64 + * @param resultSurface if non-null, we will try to capture a copy of the
1.65 + * rendered image into a surface similar to the surface of ctx; if
1.66 + * successful, a pointer to the new gfxASurface is stored in *resultSurface,
1.67 + * otherwise *resultSurface is set to nullptr.
1.68 + */
1.69 + nsresult Draw(gfxContext* ctx, nsIntSize size,
1.70 + uint32_t flags, Screen* screen, Visual* visual);
1.71 +};
1.72 +
1.73 +#endif /*GFXQTNATIVERENDER_H_*/
