introduce Props to surface

src/image/SkSurface.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 "SkFontLCDConfig.h"
+static SkPixelGeometry compute_default_geometry() {
+    SkFontLCDConfig::LCDOrder order = SkFontLCDConfig::GetSubpixelOrder();
+    if (SkFontLCDConfig::kNONE_LCDOrder == order) {
+        return kUnknown_SkPixelGeometry;
+    } else {
+        // Bit0 is RGB(0), BGR(1)
+        // Bit1 is H(0), V(1)
+        const SkPixelGeometry gGeo[] = {
+            kRGB_H_SkPixelGeometry,
+            kBGR_H_SkPixelGeometry,
+            kRGB_V_SkPixelGeometry,
+            kBGR_V_SkPixelGeometry,
+        };
+        int index = 0;
+        if (SkFontLCDConfig::kBGR_LCDOrder == order) {
+            index |= 1;
+        }
+        if (SkFontLCDConfig::kVertical_LCDOrientation == SkFontLCDConfig::GetSubpixelOrientation()){
+            index |= 2;
+        }
+        return gGeo[index];
+    }
+}
+
+SkSurfaceProps::SkSurfaceProps() : fFlags(0), fPixelGeometry(kUnknown_SkPixelGeometry) {}
+
+SkSurfaceProps::SkSurfaceProps(InitType) : fFlags(0), fPixelGeometry(compute_default_geometry()) {}
+
+SkSurfaceProps::SkSurfaceProps(uint32_t flags, SkPixelGeometry pg)
+    : fFlags(flags), fPixelGeometry(pg)
+{}
+
 ///////////////////////////////////////////////////////////////////////////////
 
-SkSurface_Base::SkSurface_Base(int width, int height) : INHERITED(width, height) {
+SkSurface_Base::SkSurface_Base(int width, int height, const Props* props)
+    : INHERITED(width, height, props)
+{
     fCachedCanvas = NULL;
     fCachedImage = NULL;
 }
 
-SkSurface_Base::SkSurface_Base(const SkImageInfo& info) : INHERITED(info) {
+SkSurface_Base::SkSurface_Base(const SkImageInfo& info, const Props* props)
+    : INHERITED(info, props)
+{
     fCachedCanvas = NULL;
     fCachedImage = NULL;
 }
 
 SkSurface_Base::~SkSurface_Base() {
     // in case the canvas outsurvives us, we null the callback
     if (fCachedCanvas) {
         fCachedCanvas->setSurfaceBase(NULL);
     }
 
@@ skipping 37 matching lines @@
     static int32_t gID;
     return sk_atomic_inc(&gID) + 1;
 }
 
 static SkSurface_Base* asSB(SkSurface* surface) {
     return static_cast<SkSurface_Base*>(surface);
 }
 
 ///////////////////////////////////////////////////////////////////////////////
 
-SkSurface::SkSurface(int width, int height) : fWidth(width), fHeight(height) {
+static SkSurfaceProps props_or_default(const SkSurfaceProps* props) {
+    if (props) {
+        return *props;
+    } else {
+        return SkSurfaceProps(SkSurfaceProps::kLegacyFontHost_InitType);
+    }
+}
+
+SkSurface::SkSurface(int width, int height, const Props* props)
+    : fProps(props_or_default(props)), fWidth(width), fHeight(height)
+{
     SkASSERT(fWidth >= 0);
     SkASSERT(fHeight >= 0);
     fGenerationID = 0;
 }
 
-SkSurface::SkSurface(const SkImageInfo& info) : fWidth(info.width()), fHeight(info.height()) {
+SkSurface::SkSurface(const SkImageInfo& info, const Props* props)
+    : fProps(props_or_default(props)), fWidth(info.width()), fHeight(info.height())
+{
     SkASSERT(fWidth >= 0);
     SkASSERT(fHeight >= 0);
     fGenerationID = 0;
 }
 
 uint32_t SkSurface::generationID() {
     if (0 == fGenerationID) {
         fGenerationID = asSB(this)->newGenerationID();
     }
     return fGenerationID;
@@ skipping 18 matching lines @@
 }
 
 void SkSurface::draw(SkCanvas* canvas, SkScalar x, SkScalar y,
                      const SkPaint* paint) {
     return asSB(this)->onDraw(canvas, x, y, paint);
 }
 
 const void* SkSurface::peekPixels(SkImageInfo* info, size_t* rowBytes) {
     return this->getCanvas()->peekPixels(info, rowBytes);
 }