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59 lines
1.8 KiB
C++
59 lines
1.8 KiB
C++
/* -*- Mode: C++; tab-width: 40; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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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 nsICanvasElementExternal_h___
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#define nsICanvasElementExternal_h___
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#include "nsISupports.h"
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#include "gfxPattern.h"
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class gfxContext;
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class nsIFrame;
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struct gfxRect;
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#define NS_ICANVASELEMENTEXTERNAL_IID \
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{ 0x51870f54, 0x6c4c, 0x469a, {0xad, 0x46, 0xf0, 0xa9, 0x8e, 0x32, 0xa7, 0xe2 } }
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class nsRenderingContext;
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class nsICanvasRenderingContextInternal;
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struct _cairo_surface;
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/*
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* This interface contains methods that are needed outside of the content/layout
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* modules, specifically widget. It should eventually go away when we support
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* libxul builds, and nsHTMLCanvasElement be used directly.
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*
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* Code internal to content/layout should /never/ use this interface; if the
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* same functionality is needed in both places, two separate methods should be
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* used.
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*/
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class nsICanvasElementExternal : public nsISupports {
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public:
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NS_DECLARE_STATIC_IID_ACCESSOR(NS_ICANVASELEMENTEXTERNAL_IID)
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enum {
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RenderFlagPremultAlpha = 0x1
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};
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/**
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* Get the size in pixels of this canvas element
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*/
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NS_IMETHOD_(nsIntSize) GetSizeExternal() = 0;
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/*
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* Ask the canvas element to tell the contexts to render themselves
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* to the given gfxContext at the origin of its coordinate space.
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*/
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NS_IMETHOD RenderContextsExternal(gfxContext *ctx,
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gfxPattern::GraphicsFilter aFilter,
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PRUint32 aFlags = RenderFlagPremultAlpha) = 0;
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};
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NS_DEFINE_STATIC_IID_ACCESSOR(nsICanvasElementExternal, NS_ICANVASELEMENTEXTERNAL_IID)
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#endif /* nsICanvasElementExternal_h___ */
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