зеркало из https://github.com/mozilla/gecko-dev.git
70 строки
3.0 KiB
C++
70 строки
3.0 KiB
C++
/* -*- 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 GFXQTNATIVERENDER_H_
|
|
#define GFXQTNATIVERENDER_H_
|
|
|
|
#include "gfxColor.h"
|
|
#include "gfxContext.h"
|
|
#include "gfxXlibSurface.h"
|
|
#include "mozilla/gfx/Rect.h"
|
|
|
|
/**
|
|
* This class lets us take code that draws into an Xlib surface drawable and lets us
|
|
* use it to draw into any Thebes context. The user should subclass this class,
|
|
* override NativeDraw, and then call Draw(). The drawing will be subjected
|
|
* to all Thebes transformations, clipping etc.
|
|
*/
|
|
class gfxQtNativeRenderer {
|
|
public:
|
|
/**
|
|
* Perform the native drawing.
|
|
* @param offsetX draw at this offset into the given drawable
|
|
* @param offsetY draw at this offset into the given drawable
|
|
* @param clipRects an array of rects; clip to the union
|
|
* @param numClipRects the number of rects in the array, or zero if
|
|
* no clipping is required
|
|
*/
|
|
virtual nsresult DrawWithXlib(cairo_surface_t* surface,
|
|
nsIntPoint offset,
|
|
mozilla::gfx::IntRect* clipRects,
|
|
uint32_t numClipRects) = 0;
|
|
|
|
enum {
|
|
// If set, then Draw() is opaque, i.e., every pixel in the intersection
|
|
// of the clipRect and (offset.x,offset.y,bounds.width,bounds.height)
|
|
// will be set and there is no dependence on what the existing pixels
|
|
// in the drawable are set to.
|
|
DRAW_IS_OPAQUE = 0x01,
|
|
// If set, then numClipRects can be zero or one
|
|
DRAW_SUPPORTS_CLIP_RECT = 0x04,
|
|
// If set, then numClipRects can be any value. If neither this
|
|
// nor CLIP_RECT are set, then numClipRects will be zero
|
|
DRAW_SUPPORTS_CLIP_LIST = 0x08,
|
|
// If set, then the visual passed in can be any visual, otherwise the
|
|
// visual passed in must be the default visual for dpy's default screen
|
|
DRAW_SUPPORTS_ALTERNATE_VISUAL = 0x10,
|
|
// If set, then the Screen 'screen' in the callback can be different
|
|
// from the default Screen of the display passed to 'Draw' and can be
|
|
// on a different display.
|
|
DRAW_SUPPORTS_ALTERNATE_SCREEN = 0x20
|
|
};
|
|
|
|
/**
|
|
* @param flags see above
|
|
* @param size Draw()'s drawing is guaranteed to be restricted to
|
|
* the rectangle (offset.x,offset.y,size.width,size.height)
|
|
* @param dpy a display to use for the drawing if ctx doesn't have one
|
|
* @param resultSurface if non-null, we will try to capture a copy of the
|
|
* rendered image into a surface similar to the surface of ctx; if
|
|
* successful, a pointer to the new gfxASurface is stored in *resultSurface,
|
|
* otherwise *resultSurface is set to nullptr.
|
|
*/
|
|
nsresult Draw(gfxContext* ctx, mozilla::gfx::IntSize size,
|
|
uint32_t flags, Screen* screen, Visual* visual);
|
|
};
|
|
|
|
#endif /*GFXQTNATIVERENDER_H_*/
|