introduce Props to surface

src/image/SkSurface_Gpu.cpp

 /*
  * Copyright 2012 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkSurface_Base.h"
 #include "SkImagePriv.h"
 #include "SkCanvas.h"
 #include "SkGpuDevice.h"
 
 class SkSurface_Gpu : public SkSurface_Base {
 public:
     SK_DECLARE_INST_COUNT(SkSurface_Gpu)
 
-    SkSurface_Gpu(GrRenderTarget*, bool cached, TextRenderMode trm, 
-                  SkSurface::RenderTargetFlags flags);
+    SkSurface_Gpu(GrRenderTarget*, bool cached, SkSurface::RenderTargetFlags flags,
+                  const SkSurfaceProps&);
     virtual ~SkSurface_Gpu();
 
     virtual SkCanvas* onNewCanvas() SK_OVERRIDE;
     virtual SkSurface* onNewSurface(const SkImageInfo&) SK_OVERRIDE;
     virtual SkImage* onNewImageSnapshot() SK_OVERRIDE;
     virtual void onDraw(SkCanvas*, SkScalar x, SkScalar y,
                         const SkPaint*) SK_OVERRIDE;
     virtual void onCopyOnWrite(ContentChangeMode) SK_OVERRIDE;
     virtual void onDiscard() SK_OVERRIDE;
 
 private:
     SkGpuDevice* fDevice;
 
     typedef SkSurface_Base INHERITED;
 };
 
 ///////////////////////////////////////////////////////////////////////////////
 
-SkSurface_Gpu::SkSurface_Gpu(GrRenderTarget* renderTarget, bool cached, TextRenderMode trm,
-                             SkSurface::RenderTargetFlags flags)
-        : INHERITED(renderTarget->width(), renderTarget->height()) {
+SkSurface_Gpu::SkSurface_Gpu(GrRenderTarget* renderTarget, bool cached, RenderTargetFlags flags,
+                             const SkSurfaceProps& props)
+    : INHERITED(renderTarget->width(), renderTarget->height(), &props)
+{
     int deviceFlags = 0;
     deviceFlags |= cached ? SkGpuDevice::kCached_Flag : 0;
-    deviceFlags |= (kDistanceField_TextRenderMode == trm) ? SkGpuDevice::kDFFonts_Flag : 0;
-    fDevice = SkGpuDevice::Create(renderTarget, deviceFlags);
+    deviceFlags |= props.useDistanceFieldFonts() ? SkGpuDevice::kDFFonts_Flag : 0;
+    fDevice = SkGpuDevice::Create(renderTarget, this->props(), deviceFlags);
 
-    if (kRGB_565_GrPixelConfig != renderTarget->config() && 
+    if (kRGB_565_GrPixelConfig != renderTarget->config() &&
         !(flags & kDontClear_RenderTargetFlag)) {
         fDevice->clear(0x0);
     }
 }
 
 SkSurface_Gpu::~SkSurface_Gpu() {
     SkSafeUnref(fDevice);
 }
 
 SkCanvas* SkSurface_Gpu::onNewCanvas() {
-    return SkNEW_ARGS(SkCanvas, (fDevice));
+    SkCanvas::InitFlags flags = SkCanvas::kDefault_InitFlags;
+    // When we think this works...
+//    flags |= SkCanvas::kConservativeRasterClip_InitFlag;
+
+    return SkNEW_ARGS(SkCanvas, (fDevice, &this->props(), flags));
 }
 
 SkSurface* SkSurface_Gpu::onNewSurface(const SkImageInfo& info) {
     GrRenderTarget* rt = fDevice->accessRenderTarget();
     int sampleCount = rt->numSamples();
     return SkSurface::NewRenderTarget(fDevice->context(), info, sampleCount);
 }
 
 SkImage* SkSurface_Gpu::onNewImageSnapshot() {
     return SkImage::NewTexture(fDevice->accessBitmap(false));
@@ skipping 30 matching lines @@
         this->SkSurface_Gpu::onDiscard();
     }
 }
 
 void SkSurface_Gpu::onDiscard() {
     fDevice->accessRenderTarget()->discard();
 }
 
 ///////////////////////////////////////////////////////////////////////////////
 
+static SkSurfaceProps make_props(SkSurface::TextRenderMode trm) {
+    const SkSurfaceProps legacyProps(SkSurfaceProps::kLegacyFontHost_InitType);
+
+    uint32_t propsFlags = 0;
+    if (SkSurface::kDistanceField_TextRenderMode == trm) {
+        propsFlags |= SkSurfaceProps::kUseDistanceFieldFonts_Flag;
+    }
+    return SkSurfaceProps(propsFlags, legacyProps.pixelGeometry());
+}
+
 SkSurface* SkSurface::NewRenderTargetDirect(GrRenderTarget* target, TextRenderMode trm,
                                             RenderTargetFlags flags) {
     if (NULL == target) {
         return NULL;
     }
-    return SkNEW_ARGS(SkSurface_Gpu, (target, false, trm, flags));
+    return SkNEW_ARGS(SkSurface_Gpu, (target, false, flags, make_props(trm)));
 }
 
 SkSurface* SkSurface::NewRenderTarget(GrContext* ctx, const SkImageInfo& info, int sampleCount,
-                                      TextRenderMode trm, RenderTargetFlags flags) {
+                                      TextRenderMode trm, RenderTargetFlags renderFlags) {
+    return NewRenderTarget(ctx, info, sampleCount, make_props(trm), renderFlags);
+}
+
+SkSurface* SkSurface::NewRenderTarget(GrContext* ctx, const SkImageInfo& info, int sampleCount,
+                                      const SkSurfaceProps& props, RenderTargetFlags flags) {
     if (NULL == ctx) {
         return NULL;
     }
 
     GrTextureDesc desc;
     desc.fFlags = kRenderTarget_GrTextureFlagBit | kCheckAllocation_GrTextureFlagBit;
     desc.fWidth = info.width();
     desc.fHeight = info.height();
     desc.fConfig = SkImageInfo2GrPixelConfig(info);
     desc.fSampleCnt = sampleCount;
 
     SkAutoTUnref<GrTexture> tex(ctx->createUncachedTexture(desc, NULL, 0));
     if (NULL == tex) {
         return NULL;
     }
 
-    return SkNEW_ARGS(SkSurface_Gpu, (tex->asRenderTarget(), false, trm, flags));
+    return SkNEW_ARGS(SkSurface_Gpu, (tex->asRenderTarget(), false, flags, props));
 }
 
 SkSurface* SkSurface::NewScratchRenderTarget(GrContext* ctx, const SkImageInfo& info,
                                              int sampleCount, TextRenderMode trm,
                                              RenderTargetFlags flags) {
     if (NULL == ctx) {
         return NULL;
     }
 
     GrTextureDesc desc;
     desc.fFlags = kRenderTarget_GrTextureFlagBit | kCheckAllocation_GrTextureFlagBit;
     desc.fWidth = info.width();
     desc.fHeight = info.height();
     desc.fConfig = SkImageInfo2GrPixelConfig(info);
     desc.fSampleCnt = sampleCount;
 
     SkAutoTUnref<GrTexture> tex(ctx->lockAndRefScratchTexture(desc, GrContext::kExact_ScratchTexMatch));
 
     if (NULL == tex) {
         return NULL;
     }
 
-    return SkNEW_ARGS(SkSurface_Gpu, (tex->asRenderTarget(), true, trm, flags));
+    return SkNEW_ARGS(SkSurface_Gpu, (tex->asRenderTarget(), true, flags, make_props(trm)));
 }