5f74cf8c49
- Moved the SkStrokeRec class in its own file - Replaced SkStroke by SkStrokeRec in Ganesh - Moved path stroking to the Ganesh level in some cases (everytime it isn't required to do it directly in SkGpuDevice). PathEffect and MaskFilter still require path stroking at the SkGpuDevice for now. - Renamed static functions in SkPath with proper names * No functionality shold have changed with this patch. This is a step towards enabling Ganesh Path Renderers to decide whether or not to stroke the path rather than always receiving the stroked path as an input argument. BUG=chromium:135111 TEST=Try path rendering tests from the gm Review URL: https://codereview.appspot.com/6946072 git-svn-id: http://skia.googlecode.com/svn/trunk@6861 2bbb7eff-a529-9590-31e7-b0007b416f81
84 lines
2.6 KiB
C++
84 lines
2.6 KiB
C++
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/*
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* Copyright 2011 Google Inc.
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*
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#ifndef GrPathRendererChain_DEFINED
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#define GrPathRendererChain_DEFINED
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#include "GrRefCnt.h"
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#include "SkTArray.h"
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class GrContext;
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class GrDrawTarget;
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class GrPathRenderer;
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class SkPath;
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class SkStrokeRec;
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/**
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* Keeps track of an ordered list of path renderers. When a path needs to be
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* drawn this list is scanned to find the most preferred renderer. To add your
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* path renderer to the list implement the GrPathRenderer::AddPathRenderers
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* function.
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*/
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class GrPathRendererChain : public SkRefCnt {
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public:
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// See comments in GrPathRenderer.h
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enum StencilSupport {
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kNoSupport_StencilSupport,
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kStencilOnly_StencilSupport,
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kNoRestriction_StencilSupport,
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};
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SK_DECLARE_INST_COUNT(GrPathRendererChain)
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GrPathRendererChain(GrContext* context);
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~GrPathRendererChain();
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// takes a ref and unrefs in destructor
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GrPathRenderer* addPathRenderer(GrPathRenderer* pr);
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/** Documents how the caller plans to use a GrPathRenderer to draw a path. It affects the PR
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returned by getPathRenderer */
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enum DrawType {
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kColor_DrawType, // draw to the color buffer, no AA
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kColorAntiAlias_DrawType, // draw to color buffer, with partial coverage AA
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kStencilOnly_DrawType, // draw just to the stencil buffer
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kStencilAndColor_DrawType, // draw the stencil and color buffer, no AA
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kStencilAndColorAntiAlias_DrawType // draw the stencil and color buffer, with partial
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// coverage AA.
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};
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/** Returns a GrPathRenderer compatible with the request if one is available. If the caller
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is drawing the path to the stencil buffer then stencilSupport can be used to determine
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whether the path can be rendered with arbitrary stencil rules or not. See comments on
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StencilSupport in GrPathRenderer.h. */
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GrPathRenderer* getPathRenderer(const SkPath& path,
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const SkStrokeRec& rec,
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const GrDrawTarget* target,
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DrawType drawType,
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StencilSupport* stencilSupport);
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private:
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GrPathRendererChain();
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void init();
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enum {
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kPreAllocCount = 8,
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};
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bool fInit;
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GrContext* fOwner;
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SkSTArray<kPreAllocCount, GrPathRenderer*, true> fChain;
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typedef SkRefCnt INHERITED;
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};
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#endif
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