Split drawing functionality out of GrContext and into new GrDrawContext

src/gpu/GrTextContext.cpp

 /*
  * Copyright 2010 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "GrTextContext.h"
 #include "GrContext.h"
 #include "GrDrawTarget.h"
 #include "GrFontScaler.h"
 
 #include "SkAutoKern.h"
 #include "SkDrawFilter.h"
 #include "SkDrawProcs.h"
 #include "SkGlyphCache.h"
 #include "SkGpuDevice.h"
 #include "SkTextBlob.h"
 #include "SkTextMapStateProc.h"
 #include "SkTextToPathIter.h"
 
 GrTextContext::GrTextContext(GrContext* context, SkGpuDevice* gpuDevice,
                              const SkDeviceProperties& properties)
     : fFallbackTextContext(NULL)
     , fContext(context)
     , fGpuDevice(gpuDevice)
-    , fDeviceProperties(properties)
-    , fDrawTarget(NULL) {
+    , fDeviceProperties(properties) {
 }
 
 GrTextContext::~GrTextContext() {
     SkDELETE(fFallbackTextContext);
 }
 
 void GrTextContext::init(GrRenderTarget* rt, const GrClip& clip, const GrPaint& grPaint,
                          const SkPaint& skPaint, const SkIRect& regionClipBounds) {
     fClip = clip;
 
     fRenderTarget.reset(SkRef(rt));
 
     fRegionClipBounds = regionClipBounds;
     fClip.getConservativeBounds(fRenderTarget->width(), fRenderTarget->height(), &fClipRect);
 
-    fDrawTarget = fContext->getTextTarget();
-
     fPaint = grPaint;
     fSkPaint = skPaint;
 }
 
 void GrTextContext::drawText(GrRenderTarget* rt, const GrClip& clip, const GrPaint& paint,
                              const SkPaint& skPaint, const SkMatrix& viewMatrix,
                              const char text[], size_t byteLength,
                              SkScalar x, SkScalar y, const SkIRect& clipBounds) {
-    if (!fContext->getTextTarget()) {
+    if (fContext->abandoned()) {
         return;
     }
 
     GrTextContext* textContext = this;
     do {
         if (textContext->canDraw(rt, clip, paint, skPaint, viewMatrix)) {
             textContext->onDrawText(rt, clip, paint, skPaint, viewMatrix, text, byteLength, x, y,
                                     clipBounds);
             return;
         }
         textContext = textContext->fFallbackTextContext;
     } while (textContext);
 
     // fall back to drawing as a path
     SkASSERT(fGpuDevice);
     this->drawTextAsPath(skPaint, viewMatrix, text, byteLength, x, y, clipBounds);
 }
 
 void GrTextContext::drawPosText(GrRenderTarget* rt, const GrClip& clip, const GrPaint& paint,
                                 const SkPaint& skPaint, const SkMatrix& viewMatrix,
                                 const char text[], size_t byteLength,
                                 const SkScalar pos[], int scalarsPerPosition,
                                 const SkPoint& offset, const SkIRect& clipBounds) {
-    if (!fContext->getTextTarget()) {
+    if (fContext->abandoned()) {
         return;
     }
 
     GrTextContext* textContext = this;
     do {
         if (textContext->canDraw(rt, clip, paint, skPaint, viewMatrix)) {
             textContext->onDrawPosText(rt, clip, paint, skPaint, viewMatrix, text, byteLength, pos,
                                        scalarsPerPosition, offset, clipBounds);
             return;
         }
@@ skipping 162 matching lines @@
     if (cache->getAuxProcData(GlyphCacheAuxProc, &auxData)) {
         scaler = (GrFontScaler*)auxData;
     }
     if (NULL == scaler) {
         scaler = SkNEW_ARGS(GrFontScaler, (cache));
         cache->setAuxProc(GlyphCacheAuxProc, scaler);
     }
 
     return scaler;
 }