gecko/content/canvas/public/nsICanvasElementExternal.h
Ehsan Akhgari 18ef76b0d7 Bug 921753 - Part 2: Move GraphicsFilters outside of gfxPattern.h so that we won't need to #include that header everywhere GraphicsFilter is needed; r=roc
This patch reduces the number of files that transitively #include
gfx/2d.h from 1582 to 1362.
2013-10-01 17:01:19 -04:00

59 lines
1.8 KiB
C++

/* -*- Mode: C++; tab-width: 40; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* 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 nsICanvasElementExternal_h___
#define nsICanvasElementExternal_h___
#include "nsISupports.h"
#include "GraphicsFilter.h"
class gfxContext;
class nsIFrame;
struct gfxRect;
#define NS_ICANVASELEMENTEXTERNAL_IID \
{ 0x51870f54, 0x6c4c, 0x469a, {0xad, 0x46, 0xf0, 0xa9, 0x8e, 0x32, 0xa7, 0xe2 } }
class nsRenderingContext;
class nsICanvasRenderingContextInternal;
struct _cairo_surface;
/*
* This interface contains methods that are needed outside of the content/layout
* modules, specifically widget. It should eventually go away when we support
* libxul builds, and HTMLCanvasElement be used directly.
*
* Code internal to content/layout should /never/ use this interface; if the
* same functionality is needed in both places, two separate methods should be
* used.
*/
class nsICanvasElementExternal : public nsISupports {
public:
NS_DECLARE_STATIC_IID_ACCESSOR(NS_ICANVASELEMENTEXTERNAL_IID)
enum {
RenderFlagPremultAlpha = 0x1
};
/**
* Get the size in pixels of this canvas element
*/
NS_IMETHOD_(nsIntSize) GetSizeExternal() = 0;
/*
* Ask the canvas element to tell the contexts to render themselves
* to the given gfxContext at the origin of its coordinate space.
*/
NS_IMETHOD RenderContextsExternal(gfxContext *ctx,
GraphicsFilter aFilter,
uint32_t aFlags = RenderFlagPremultAlpha) = 0;
};
NS_DEFINE_STATIC_IID_ACCESSOR(nsICanvasElementExternal, NS_ICANVASELEMENTEXTERNAL_IID)
#endif /* nsICanvasElementExternal_h___ */