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116 строки
4.2 KiB
Plaintext
116 строки
4.2 KiB
Plaintext
/* -*- Mode: IDL; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is the Mozilla SVG project.
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*
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* The Initial Developer of the Original Code is
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* Crocodile Clips Ltd.
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* Portions created by the Initial Developer are Copyright (C) 2002
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* Alex Fritze <alex.fritze@crocodile-clips.com> (original author)
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either of the GNU General Public License Version 2 or later (the "GPL"),
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* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#include "nsISupports.idl"
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interface nsISVGRendererRegion;
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interface nsISVGRendererGlyphMetrics;
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interface nsISVGRendererCanvas;
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interface nsIDOMSVGRect;
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interface nsSVGGlyphFrame;
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/**
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* \addtogroup renderer_interfaces Rendering Engine Interfaces
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* @{
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*/
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/**
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* One of a number of interfaces (all starting with nsISVGRenderer*)
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* to be implemented by an SVG rendering engine. See nsISVGRenderer
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* for more details.
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*
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* The SVG rendering backend uses this interface to communicate to the
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* rendering engine-native glyph objects.
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*
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* A glyph object is instantiated by the rendering backend for a given
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* nsISVGGlyphGeometrySource object with a call to
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* nsISVGRenderer::createGlyphGeometry(). The glyph object is assumed
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* to store a reference to its associated source object and provide
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* glyph rendering and hit-testing for the (composite) glyph described
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* by the nsISVGGlyphGeometrySource members.
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*/
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[uuid(c4bb4669-563c-4c32-b499-e7b71fed4914)]
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interface nsISVGRendererGlyphGeometry : nsISupports
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{
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/**
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* Paint this object.
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*
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* @param canvas The canvas to render to.
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*/
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void render(in nsSVGGlyphFrame source, in nsISVGRendererCanvas canvas);
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/**
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* Called by this object's corresponding nsISVGGlyphGeometrySource
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* as a notification that some of the source's data (identified by
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* parameter 'updatemask') has changed.
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*
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* @param updatemask An OR-ed combination of the UPDATEMASK_*
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* constants defined in nsISVGGlyphGeometrySource.
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* @return Region that needs to be redrawn.
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*/
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nsISVGRendererRegion update(in nsSVGGlyphFrame source,
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in unsigned long updatemask);
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/**
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* Get a region object describing the area covered with paint by
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* this glyph geometry.
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*
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* @return Covered region.
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*/
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nsISVGRendererRegion getCoveredRegion(in nsSVGGlyphFrame source);
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/**
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* Hit-testing method. Does this glyph geometry (with all relevant
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* transformations applied) contain the point x,y? Should work on a
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* character-cell basis, rather than the actual character outline.
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*
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* @param x X-coordinate of test point. @param y Y-coordinate of
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* test point.
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* @return PR_TRUE if the glyph geometry contains the point,
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* PR_FALSE otherwise.
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*/
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boolean containsPoint(in nsSVGGlyphFrame source, in float x, in float y);
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/**
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* Transformed bounding box (does not include stroke width)
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*/
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void getBoundingBox(in nsSVGGlyphFrame source, out nsIDOMSVGRect box);
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};
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/** @} */
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