add surfaceprops to SkWindow, and 'D' to toggle distancefieldfonts

BUG=skia:

Review URL: https://codereview.chromium.org/631943002

include/views/SkWindow.h

@@ -14,6 +14,7 @@
 #include "SkRegion.h"
 #include "SkEvent.h"
 #include "SkKey.h"
+#include "SkSurfaceProps.h"
 #include "SkTDArray.h"
 
 #ifdef SK_BUILD_FOR_WINCEx
@@ -29,6 +30,11 @@ public:
             SkWindow();
     virtual ~SkWindow();
 
+    SkSurfaceProps getSurfaceProps() const { return fSurfaceProps; }
+    void setSurfaceProps(const SkSurfaceProps& props) {
+        fSurfaceProps = props;
+    }
+
     const SkBitmap& getBitmap() const { return fBitmap; }
 
     void    setColorType(SkColorType);
@@ -80,6 +86,7 @@ protected:
     virtual bool onSetFocusView(SkView* focus);
 
 private:
+    SkSurfaceProps  fSurfaceProps;
     SkColorType fColorType;
     SkBitmap    fBitmap;
     SkRegion    fDirtyRgn;

samplecode/SampleApp.cpp

@@ -275,7 +275,8 @@ public:
                                      SampleWindow* win) SK_OVERRIDE {
 #if SK_SUPPORT_GPU
         if (IsGpuDeviceType(dType) && fCurContext) {
-            return SkSurface::NewRenderTargetDirect(fCurRenderTarget);
+            SkSurfaceProps props(win->getSurfaceProps());
+            return SkSurface::NewRenderTargetDirect(fCurRenderTarget, &props);
         }
 #endif
         return NULL;
@@ -1715,6 +1716,9 @@ bool SampleWindow::onHandleChar(SkUnichar uni) {
             post_event_to_sink(SkNEW_ARGS(SkEvent, (gUpdateWindowTitleEvtName)), this);
             this->inval(NULL);
             break;
+        case 'D':
+            toggleDistanceFieldFonts();
+            break;
         case 'f':
             // only
             toggleFPS();
@@ -1812,6 +1816,15 @@ void SampleWindow::toggleFPS() {
     this->inval(NULL);
 }
 
+void SampleWindow::toggleDistanceFieldFonts() {
+    SkSurfaceProps props = this->getSurfaceProps();
+    uint32_t flags = props.flags() ^ SkSurfaceProps::kUseDistanceFieldFonts_Flag;
+    this->setSurfaceProps(SkSurfaceProps(flags, props.pixelGeometry()));
+
+    this->updateTitle();
+    this->inval(NULL);
+}
+
 #include "SkDumpCanvas.h"
 
 bool SampleWindow::onHandleKey(SkKey key) {
@@ -2023,6 +2036,9 @@ void SampleWindow::updateTitle() {
     if (fPerspAnim) {
         title.prepend("<K> ");
     }
+    if (this->getSurfaceProps().flags() & SkSurfaceProps::kUseDistanceFieldFonts_Flag) {
+        title.prepend("<DFF> ");
+    }
 
     title.prepend(trystate_str(fLCDState, "LCD ", "lcd "));
     title.prepend(trystate_str(fAAState, "AA ", "aa "));

samplecode/SampleApp.h

@@ -118,6 +118,7 @@ public:
     void toggleSlideshow();
     void toggleFPS();
     void showOverview();
+    void toggleDistanceFieldFonts();
 
     GrContext* getGrContext() const { return fDevManager->getGrContext(); }
 

src/views/SkWindow.cpp

@@ -14,7 +14,10 @@
 
 #define SK_EventDelayInval "\xd" "n" "\xa" "l"
 
-SkWindow::SkWindow() : fFocusView(NULL) {
+SkWindow::SkWindow()
+    : fSurfaceProps(SkSurfaceProps::kLegacyFontHost_InitType)
+    , fFocusView(NULL)
+{
     fClicks.reset();
     fWaitingOnInval = false;
 
@@ -34,7 +37,7 @@ SkWindow::~SkWindow() {
 
 SkSurface* SkWindow::createSurface() {
     const SkBitmap& bm = this->getBitmap();
-    return SkSurface::NewRasterDirect(bm.info(), bm.getPixels(), bm.rowBytes());
+    return SkSurface::NewRasterDirect(bm.info(), bm.getPixels(), bm.rowBytes(), &fSurfaceProps);
 }
 
 void SkWindow::setMatrix(const SkMatrix& matrix) {