Skia Merge (revision 1510)

This CL includes bug fixes and closely mirrors the version of
Skia used in Chrome M13, which is likely to be our baseline for
ICS.

The CL also adds source files for the SampleApp which will allow
us to execute basic skia tests. The SampleApp requires the
utils/views directory in order to run.

Finally, we have included the PDF backend for Skia in order to
experiment with using it to generate PDF files for certain
applications.

Note: The SampleApp and PDF code are not built as part of libskia.

Change-Id: I1895ccfbd8074e25f19148cc7bd1b4af571fb307

1 files changed, 1647 insertions, 0 deletions

diff --git a/samplecode/SampleApp.cpp b/samplecode/SampleApp.cpp
new file mode 100644
index 0000000..3efffe6
--- /dev/null
+++ b/samplecode/SampleApp.cpp
@@ -0,0 +1,1647 @@
+#include "SkCanvas.h"
+#include "SkDevice.h"
+#include "SkGpuCanvas.h"
+#include "SkGraphics.h"
+#include "SkImageEncoder.h"
+#include "SkPaint.h"
+#include "SkPicture.h"
+#include "SkStream.h"
+#include "SkTime.h"
+#include "SkWindow.h"
+
+#include "SampleCode.h"
+#include "GrContext.h"
+#include "SkTouchGesture.h"
+#include "SkTypeface.h"
+
+#define TEST_GPIPEx
+
+#ifdef  TEST_GPIPE
+#define PIPE_FILE
+#define FILE_PATH "/path/to/drawing.data"
+#endif
+
+#define USE_ARROWS_FOR_ZOOM true
+//#define DEFAULT_TO_GPU
+
+extern SkView* create_overview(int, const SkViewFactory[]);
+
+#define SK_SUPPORT_GL
+
+#define ANIMATING_EVENTTYPE "nextSample"
+#define ANIMATING_DELAY     750
+
+#ifdef SK_DEBUG
+    #define FPS_REPEAT_MULTIPLIER   1
+#else
+    #define FPS_REPEAT_MULTIPLIER   10
+#endif
+#define FPS_REPEAT_COUNT    (10 * FPS_REPEAT_MULTIPLIER)
+
+#ifdef SK_SUPPORT_GL
+    #include "GrGLConfig.h"
+#endif
+
+///////////////
+static const char view_inval_msg[] = "view-inval-msg";
+
+static void postInvalDelay(SkEventSinkID sinkID) {
+    SkEvent* evt = new SkEvent(view_inval_msg);
+    evt->post(sinkID, 1);
+}
+
+static bool isInvalEvent(const SkEvent& evt) {
+    return evt.isType(view_inval_msg);
+}
+//////////////////
+
+SkViewRegister* SkViewRegister::gHead;
+SkViewRegister::SkViewRegister(SkViewFactory fact) : fFact(fact) {
+    static bool gOnce;
+    if (!gOnce) {
+        gHead = NULL;
+        gOnce = true;
+    }
+
+    fChain = gHead;
+    gHead = this;
+}
+
+#if defined(SK_SUPPORT_GL)
+    #define SK_USE_SHADERS
+#endif
+
+#ifdef SK_BUILD_FOR_MAC
+#include <CoreFoundation/CoreFoundation.h>
+#include <CoreFoundation/CFURLAccess.h>
+
+static void testpdf() {
+    CFStringRef path = CFStringCreateWithCString(NULL, "/test.pdf",
+                                                 kCFStringEncodingUTF8);
+    CFURLRef url = CFURLCreateWithFileSystemPath(NULL, path,
+                                              kCFURLPOSIXPathStyle,
+                                              false);
+    CFRelease(path);
+    CGRect box = CGRectMake(0, 0, 8*72, 10*72);
+    CGContextRef cg = CGPDFContextCreateWithURL(url, &box, NULL);
+    CFRelease(url);
+
+    CGContextBeginPage(cg, &box);
+    CGRect r = CGRectMake(10, 10, 40 + 0.5, 50 + 0.5);
+    CGContextFillEllipseInRect(cg, r);
+    CGContextEndPage(cg);
+    CGContextRelease(cg);
+
+    if (false) {
+        SkBitmap bm;
+        bm.setConfig(SkBitmap::kA8_Config, 64, 64);
+        bm.allocPixels();
+        bm.eraseColor(0);
+
+        SkCanvas canvas(bm);
+
+    }
+}
+#endif
+
+//////////////////////////////////////////////////////////////////////////////
+
+enum FlipAxisEnum {
+    kFlipAxis_X = (1 << 0),
+    kFlipAxis_Y = (1 << 1)
+};
+
+enum SkTriState {
+    kFalse_SkTriState,
+    kTrue_SkTriState,
+    kUnknown_SkTriState,
+};
+
+static SkTriState cycle_tristate(SkTriState state) {
+    static const SkTriState gCycle[] = {
+        /* kFalse_SkTriState   -> */  kUnknown_SkTriState,
+        /* kTrue_SkTriState    -> */  kFalse_SkTriState,
+        /* kUnknown_SkTriState -> */  kTrue_SkTriState,
+    };
+    return gCycle[state];
+}
+
+#include "SkDrawFilter.h"
+
+class FlagsDrawFilter : public SkDrawFilter {
+public:
+    FlagsDrawFilter(SkTriState lcd, SkTriState aa, SkTriState filter,
+                    SkTriState hinting) :
+        fLCDState(lcd), fAAState(aa), fFilterState(filter), fHintingState(hinting) {}
+
+    virtual void filter(SkPaint* paint, Type t) {
+        if (kText_Type == t && kUnknown_SkTriState != fLCDState) {
+            paint->setLCDRenderText(kTrue_SkTriState == fLCDState);
+        }
+        if (kUnknown_SkTriState != fAAState) {
+            paint->setAntiAlias(kTrue_SkTriState == fAAState);
+        }
+        if (kUnknown_SkTriState != fFilterState) {
+            paint->setFilterBitmap(kTrue_SkTriState == fFilterState);
+        }
+        if (kUnknown_SkTriState != fHintingState) {
+            paint->setHinting(kTrue_SkTriState == fHintingState ?
+                              SkPaint::kNormal_Hinting :
+                              SkPaint::kSlight_Hinting);
+        }
+    }
+
+private:
+    SkTriState  fLCDState;
+    SkTriState  fAAState;
+    SkTriState  fFilterState;
+    SkTriState  fHintingState;
+};
+
+//////////////////////////////////////////////////////////////////////////////
+
+#define MAX_ZOOM_LEVEL  8
+#define MIN_ZOOM_LEVEL  -8
+
+static const char gCharEvtName[] = "SampleCode_Char_Event";
+static const char gKeyEvtName[] = "SampleCode_Key_Event";
+static const char gTitleEvtName[] = "SampleCode_Title_Event";
+static const char gPrefSizeEvtName[] = "SampleCode_PrefSize_Event";
+static const char gFastTextEvtName[] = "SampleCode_FastText_Event";
+
+bool SampleCode::CharQ(const SkEvent& evt, SkUnichar* outUni) {
+    if (evt.isType(gCharEvtName, sizeof(gCharEvtName) - 1)) {
+        if (outUni) {
+            *outUni = evt.getFast32();
+        }
+        return true;
+    }
+    return false;
+}
+
+bool SampleCode::KeyQ(const SkEvent& evt, SkKey* outKey) {
+    if (evt.isType(gKeyEvtName, sizeof(gKeyEvtName) - 1)) {
+        if (outKey) {
+            *outKey = (SkKey)evt.getFast32();
+        }
+        return true;
+    }
+    return false;
+}
+
+bool SampleCode::TitleQ(const SkEvent& evt) {
+    return evt.isType(gTitleEvtName, sizeof(gTitleEvtName) - 1);
+}
+
+void SampleCode::TitleR(SkEvent* evt, const char title[]) {
+    SkASSERT(evt && TitleQ(*evt));
+    evt->setString(gTitleEvtName, title);
+}
+
+bool SampleCode::PrefSizeQ(const SkEvent& evt) {
+    return evt.isType(gPrefSizeEvtName, sizeof(gPrefSizeEvtName) - 1);
+}
+
+void SampleCode::PrefSizeR(SkEvent* evt, SkScalar width, SkScalar height) {
+    SkASSERT(evt && PrefSizeQ(*evt));
+    SkScalar size[2];
+    size[0] = width;
+    size[1] = height;
+    evt->setScalars(gPrefSizeEvtName, 2, size);
+}
+
+bool SampleCode::FastTextQ(const SkEvent& evt) {
+    return evt.isType(gFastTextEvtName, sizeof(gFastTextEvtName) - 1);
+}
+
+///////////////////////////////////////////////////////////////////////////////
+
+static SkMSec gAnimTime;
+static SkMSec gAnimTimePrev;
+
+SkMSec SampleCode::GetAnimTime() { return gAnimTime; }
+SkMSec SampleCode::GetAnimTimeDelta() { return gAnimTime - gAnimTimePrev; }
+SkScalar SampleCode::GetAnimSecondsDelta() {
+    return SkDoubleToScalar(GetAnimTimeDelta() / 1000.0);
+}
+
+SkScalar SampleCode::GetAnimScalar(SkScalar speed, SkScalar period) {
+    // since gAnimTime can be up to 32 bits, we can't convert it to a float
+    // or we'll lose the low bits. Hence we use doubles for the intermediate
+    // calculations
+    double seconds = (double)gAnimTime / 1000.0;
+    double value = SkScalarToDouble(speed) * seconds;
+    if (period) {
+        value = ::fmod(value, SkScalarToDouble(period));
+    }
+    return SkDoubleToScalar(value);
+}
+
+//////////////////////////////////////////////////////////////////////////////
+
+static SkView* curr_view(SkWindow* wind) {
+    SkView::F2BIter iter(wind);
+    return iter.next();
+}
+
+class SampleWindow : public SkOSWindow {
+    SkTDArray<SkViewFactory> fSamples;
+public:
+    SampleWindow(void* hwnd);
+    virtual ~SampleWindow();
+
+    virtual void draw(SkCanvas* canvas);
+
+protected:
+    virtual void onDraw(SkCanvas* canvas);
+    virtual bool onHandleKey(SkKey key);
+    virtual bool onHandleChar(SkUnichar);
+    virtual void onSizeChange();
+
+    virtual SkCanvas* beforeChildren(SkCanvas*);
+    virtual void afterChildren(SkCanvas*);
+    virtual void beforeChild(SkView* child, SkCanvas* canvas);
+    virtual void afterChild(SkView* child, SkCanvas* canvas);
+
+    virtual bool onEvent(const SkEvent& evt);
+    virtual bool onQuery(SkEvent* evt);
+
+    virtual bool onDispatchClick(int x, int y, Click::State);
+    virtual bool onClick(Click* click);
+    virtual Click* onFindClickHandler(SkScalar x, SkScalar y);
+
+#if 0
+    virtual bool handleChar(SkUnichar uni);
+    virtual bool handleEvent(const SkEvent& evt);
+    virtual bool handleKey(SkKey key);
+    virtual bool handleKeyUp(SkKey key);
+    virtual bool onHandleKeyUp(SkKey key);
+#endif
+
+private:
+    int fCurrIndex;
+
+    SkPicture* fPicture;
+    SkGpuCanvas* fGpuCanvas;
+    GrContext* fGrContext;
+    SkPath fClipPath;
+
+    SkTouchGesture fGesture;
+    int      fZoomLevel;
+    SkScalar fZoomScale;
+
+    enum CanvasType {
+        kRaster_CanvasType,
+        kPicture_CanvasType,
+        kGPU_CanvasType
+    };
+    CanvasType fCanvasType;
+
+    bool fUseClip;
+    bool fNClip;
+    bool fRepeatDrawing;
+    bool fAnimating;
+    bool fRotate;
+    bool fScale;
+    bool fRequestGrabImage;
+    bool fUsePipe;
+    bool fMeasureFPS;
+    SkMSec fMeasureFPS_Time;
+
+    // The following are for the 'fatbits' drawing
+    // Latest position of the mouse.
+    int fMouseX, fMouseY;
+    int fFatBitsScale;
+    // Used by the text showing position and color values.
+    SkTypeface* fTypeface;
+    bool fShowZoomer;
+
+    SkTriState fLCDState;
+    SkTriState fAAState;
+    SkTriState fFilterState;
+    SkTriState fHintingState;
+    unsigned   fFlipAxis;
+
+    int fScrollTestX, fScrollTestY;
+
+    bool make3DReady();
+    void changeZoomLevel(int delta);
+
+    void loadView(SkView*);
+    void updateTitle();
+    bool nextSample();
+
+    void toggleZoomer();
+    bool zoomIn();
+    bool zoomOut();
+    void updatePointer(int x, int y);
+    void showZoomer(SkCanvas* canvas);
+
+    void postAnimatingEvent() {
+        if (fAnimating) {
+            SkEvent* evt = new SkEvent(ANIMATING_EVENTTYPE);
+            evt->post(this->getSinkID(), ANIMATING_DELAY);
+        }
+    }
+
+
+    static CanvasType cycle_canvastype(CanvasType);
+
+    typedef SkOSWindow INHERITED;
+};
+
+bool SampleWindow::zoomIn()
+{
+    // Arbitrarily decided
+    if (fFatBitsScale == 25) return false;
+    fFatBitsScale++;
+    this->inval(NULL);
+    return true;
+}
+
+bool SampleWindow::zoomOut()
+{
+    if (fFatBitsScale == 1) return false;
+    fFatBitsScale--;
+    this->inval(NULL);
+    return true;
+}
+
+void SampleWindow::toggleZoomer()
+{
+    fShowZoomer = !fShowZoomer;
+    this->inval(NULL);
+}
+
+void SampleWindow::updatePointer(int x, int y)
+{
+    fMouseX = x;
+    fMouseY = y;
+    if (fShowZoomer) {
+        this->inval(NULL);
+    }
+}
+
+bool SampleWindow::make3DReady() {
+
+#if defined(SK_SUPPORT_GL)
+    if (attachGL()) {
+        if (NULL != fGrContext) {
+        // various gr lifecycle tests
+        #if   0
+            fGrContext->freeGpuResources();
+        #elif 0
+            // this will leak resources.
+            fGrContext->contextLost();
+        #elif 0
+            GrAssert(1 == fGrContext->refcnt());
+            fGrContext->unref();
+            fGrContext = NULL;
+        #endif
+        }
+
+        if (NULL == fGrContext) {
+        #if defined(SK_USE_SHADERS)
+            fGrContext = GrContext::Create(kOpenGL_Shaders_GrEngine, NULL);
+        #else
+            fGrContext = GrContext::Create(kOpenGL_Fixed_GrEngine, NULL);
+        #endif
+            SkDebugf("---- constructor\n");
+        }
+
+        if (NULL != fGrContext) {
+            return true;
+        } else {
+            detachGL();
+        }
+    }
+#endif
+    SkDebugf("Failed to setup 3D");
+    return false;
+}
+
+SampleWindow::CanvasType SampleWindow::cycle_canvastype(CanvasType ct) {
+    static const CanvasType gCT[] = {
+        kPicture_CanvasType,
+        kGPU_CanvasType,
+        kRaster_CanvasType
+    };
+    return gCT[ct];
+}
+
+SampleWindow::SampleWindow(void* hwnd) : INHERITED(hwnd) {
+#ifdef  PIPE_FILE
+    //Clear existing file or create file if it doesn't exist
+    FILE* f = fopen(FILE_PATH, "wb");
+    fclose(f);
+#endif
+     
+    fPicture = NULL;
+    fGpuCanvas = NULL;
+
+    fGrContext = NULL;
+
+#ifdef DEFAULT_TO_GPU
+    fCanvasType = kGPU_CanvasType;
+#else
+    fCanvasType = kRaster_CanvasType;
+#endif
+    fUseClip = false;
+    fNClip = false;
+    fRepeatDrawing = false;
+    fAnimating = false;
+    fRotate = false;
+    fScale = false;
+    fRequestGrabImage = false;
+    fUsePipe = false;
+    fMeasureFPS = false;
+    fLCDState = kUnknown_SkTriState;
+    fAAState = kUnknown_SkTriState;
+    fFilterState = kUnknown_SkTriState;
+    fHintingState = kUnknown_SkTriState;
+    fFlipAxis = 0;
+    fScrollTestX = fScrollTestY = 0;
+
+    fMouseX = fMouseY = 0;
+    fFatBitsScale = 8;
+    fTypeface = SkTypeface::CreateFromTypeface(NULL, SkTypeface::kBold);
+    fShowZoomer = false;
+
+    fZoomLevel = 0;
+    fZoomScale = SK_Scalar1;
+
+//    this->setConfig(SkBitmap::kRGB_565_Config);
+    this->setConfig(SkBitmap::kARGB_8888_Config);
+    this->setVisibleP(true);
+    this->setClipToBounds(false);
+
+    {
+        const SkViewRegister* reg = SkViewRegister::Head();
+        while (reg) {
+            *fSamples.append() = reg->factory();
+            reg = reg->next();
+        }
+    }
+    fCurrIndex = 0;
+    this->loadView(fSamples[fCurrIndex]());
+
+#ifdef SK_BUILD_FOR_MAC
+    testpdf();
+#endif
+}
+
+SampleWindow::~SampleWindow() {
+    delete fPicture;
+    delete fGpuCanvas;
+    if (NULL != fGrContext) {
+        fGrContext->unref();
+    }
+    fTypeface->unref();
+}
+
+static SkBitmap capture_bitmap(SkCanvas* canvas) {
+    SkBitmap bm;
+    const SkBitmap& src = canvas->getDevice()->accessBitmap(false);
+    src.copyTo(&bm, src.config());
+    return bm;
+}
+
+static bool bitmap_diff(SkCanvas* canvas, const SkBitmap& orig,
+                        SkBitmap* diff) {
+    const SkBitmap& src = canvas->getDevice()->accessBitmap(false);
+
+    SkAutoLockPixels alp0(src);
+    SkAutoLockPixels alp1(orig);
+    for (int y = 0; y < src.height(); y++) {
+        const void* srcP = src.getAddr(0, y);
+        const void* origP = orig.getAddr(0, y);
+        size_t bytes = src.width() * src.bytesPerPixel();
+        if (memcmp(srcP, origP, bytes)) {
+            SkDebugf("---------- difference on line %d\n", y);
+            return true;
+        }
+    }
+    return false;
+}
+
+static void drawText(SkCanvas* canvas, SkString string, SkScalar left, SkScalar top, SkPaint& paint)
+{
+    SkColor desiredColor = paint.getColor();
+    paint.setColor(SK_ColorWHITE);
+    const char* c_str = string.c_str();
+    size_t size = string.size();
+    SkRect bounds;
+    paint.measureText(c_str, size, &bounds);
+    bounds.offset(left, top);
+    SkScalar inset = SkIntToScalar(-2);
+    bounds.inset(inset, inset);
+    canvas->drawRect(bounds, paint);
+    if (desiredColor != SK_ColorBLACK) {
+        paint.setColor(SK_ColorBLACK);
+        canvas->drawText(c_str, size, left + SK_Scalar1, top + SK_Scalar1, paint);
+    }
+    paint.setColor(desiredColor);
+    canvas->drawText(c_str, size, left, top, paint);
+}
+
+#define XCLIP_N  8
+#define YCLIP_N  8
+
+void SampleWindow::draw(SkCanvas* canvas) {
+    // update the animation time
+    gAnimTimePrev = gAnimTime;
+    gAnimTime = SkTime::GetMSecs();
+
+    SkScalar cx = SkScalarHalf(this->width());
+    SkScalar cy = SkScalarHalf(this->height());
+
+    if (fZoomLevel) {
+        SkMatrix m;
+        SkPoint center;
+        m = canvas->getTotalMatrix();//.invert(&m);
+        m.mapXY(cx, cy, &center);
+        cx = center.fX;
+        cy = center.fY;
+
+        m.setTranslate(-cx, -cy);
+        m.postScale(fZoomScale, fZoomScale);
+        m.postTranslate(cx, cy);
+
+        canvas->concat(m);
+    }
+
+    if (fFlipAxis) {
+        SkMatrix m;
+        m.setTranslate(cx, cy);
+        if (fFlipAxis & kFlipAxis_X) {
+            m.preScale(-SK_Scalar1, SK_Scalar1);
+        }
+        if (fFlipAxis & kFlipAxis_Y) {
+            m.preScale(SK_Scalar1, -SK_Scalar1);
+        }
+        m.preTranslate(-cx, -cy);
+        canvas->concat(m);
+    }
+
+    // Apply any gesture matrix
+    if (true) {
+        const SkMatrix& localM = fGesture.localM();
+        if (localM.getType() & SkMatrix::kScale_Mask) {
+            canvas->setExternalMatrix(&localM);
+        }
+        canvas->concat(localM);
+        canvas->concat(fGesture.globalM());
+
+        if (fGesture.isActive()) {
+            this->inval(NULL);
+        }
+    }
+
+    if (fNClip) {
+        this->INHERITED::draw(canvas);
+        SkBitmap orig = capture_bitmap(canvas);
+
+        const SkScalar w = this->width();
+        const SkScalar h = this->height();
+        const SkScalar cw = w / XCLIP_N;
+        const SkScalar ch = h / YCLIP_N;
+        for (int y = 0; y < YCLIP_N; y++) {
+            SkRect r;
+            r.fTop = y * ch;
+            r.fBottom = (y + 1) * ch;
+            if (y == YCLIP_N - 1) {
+                r.fBottom = h;
+            }
+            for (int x = 0; x < XCLIP_N; x++) {
+                SkAutoCanvasRestore acr(canvas, true);
+                r.fLeft = x * cw;
+                r.fRight = (x + 1) * cw;
+                if (x == XCLIP_N - 1) {
+                    r.fRight = w;
+                }
+                canvas->clipRect(r);
+                this->INHERITED::draw(canvas);
+            }
+        }
+
+        SkBitmap diff;
+        if (bitmap_diff(canvas, orig, &diff)) {
+        }
+    } else {
+        this->INHERITED::draw(canvas);
+    }
+    if (fShowZoomer && fCanvasType != kGPU_CanvasType) {
+        // In the GPU case, INHERITED::draw calls beforeChildren, which
+        // creates an SkGpuCanvas.  All further draw calls are directed
+        // at that canvas, which is deleted in afterChildren (which is
+        // also called by draw), so we cannot show the zoomer here.
+        // Instead, we call it inside afterChildren.
+        showZoomer(canvas);
+    }
+}
+
+void SampleWindow::showZoomer(SkCanvas* canvas) {
+        int count = canvas->save();
+        canvas->resetMatrix();
+        // Ensure the mouse position is on screen.
+        int width = SkScalarRound(this->width());
+        int height = SkScalarRound(this->height());
+        if (fMouseX >= width) fMouseX = width - 1;
+        else if (fMouseX < 0) fMouseX = 0;
+        if (fMouseY >= height) fMouseY = height - 1;
+        else if (fMouseY < 0) fMouseY = 0;
+
+        SkBitmap bitmap = capture_bitmap(canvas);
+        bitmap.lockPixels();
+
+        // Find the size of the zoomed in view, forced to be odd, so the examined pixel is in the middle.
+        int zoomedWidth = (width >> 1) | 1;
+        int zoomedHeight = (height >> 1) | 1;
+        SkIRect src;
+        src.set(0, 0, zoomedWidth / fFatBitsScale, zoomedHeight / fFatBitsScale);
+        src.offset(fMouseX - (src.width()>>1), fMouseY - (src.height()>>1));
+        SkRect dest;
+        dest.set(0, 0, SkIntToScalar(zoomedWidth), SkIntToScalar(zoomedHeight));
+        dest.offset(SkIntToScalar(width - zoomedWidth), SkIntToScalar(height - zoomedHeight));
+        SkPaint paint;
+        // Clear the background behind our zoomed in view
+        paint.setColor(SK_ColorWHITE);
+        canvas->drawRect(dest, paint);
+        canvas->drawBitmapRect(bitmap, &src, dest);
+        paint.setColor(SK_ColorBLACK);
+        paint.setStyle(SkPaint::kStroke_Style);
+        // Draw a border around the pixel in the middle
+        SkRect originalPixel;
+        originalPixel.set(SkIntToScalar(fMouseX), SkIntToScalar(fMouseY), SkIntToScalar(fMouseX + 1), SkIntToScalar(fMouseY + 1));
+        SkMatrix matrix;
+        SkRect scalarSrc;
+        scalarSrc.set(src);
+        SkColor color = bitmap.getColor(fMouseX, fMouseY);
+        if (matrix.setRectToRect(scalarSrc, dest, SkMatrix::kFill_ScaleToFit)) {
+            SkRect pixel;
+            matrix.mapRect(&pixel, originalPixel);
+            // TODO Perhaps measure the values and make the outline white if it's "dark"
+            if (color == SK_ColorBLACK) {
+                paint.setColor(SK_ColorWHITE);
+            }
+            canvas->drawRect(pixel, paint);
+        }
+        paint.setColor(SK_ColorBLACK);
+        // Draw a border around the destination rectangle
+        canvas->drawRect(dest, paint);
+        paint.setStyle(SkPaint::kStrokeAndFill_Style);
+        // Identify the pixel and its color on screen
+        paint.setTypeface(fTypeface);
+        paint.setAntiAlias(true);
+        SkScalar lineHeight = paint.getFontMetrics(NULL);
+        SkString string;
+        string.appendf("(%i, %i)", fMouseX, fMouseY);
+        SkScalar left = dest.fLeft + SkIntToScalar(3);
+        SkScalar i = SK_Scalar1;
+        drawText(canvas, string, left, SkScalarMulAdd(lineHeight, i, dest.fTop), paint);
+        // Alpha
+        i += SK_Scalar1;
+        string.reset();
+        string.appendf("A: %X", SkColorGetA(color));
+        drawText(canvas, string, left, SkScalarMulAdd(lineHeight, i, dest.fTop), paint);
+        // Red
+        i += SK_Scalar1;
+        string.reset();
+        string.appendf("R: %X", SkColorGetR(color));
+        paint.setColor(SK_ColorRED);
+        drawText(canvas, string, left, SkScalarMulAdd(lineHeight, i, dest.fTop), paint);
+        // Green
+        i += SK_Scalar1;
+        string.reset();
+        string.appendf("G: %X", SkColorGetG(color));
+        paint.setColor(SK_ColorGREEN);
+        drawText(canvas, string, left, SkScalarMulAdd(lineHeight, i, dest.fTop), paint);
+        // Blue
+        i += SK_Scalar1;
+        string.reset();
+        string.appendf("B: %X", SkColorGetB(color));
+        paint.setColor(SK_ColorBLUE);
+        drawText(canvas, string, left, SkScalarMulAdd(lineHeight, i, dest.fTop), paint);
+        canvas->restoreToCount(count);
+}
+
+void SampleWindow::onDraw(SkCanvas* canvas) {
+    if (fRepeatDrawing) {
+        this->inval(NULL);
+    }
+}
+
+#include "SkColorPriv.h"
+
+static void reverseRedAndBlue(const SkBitmap& bm) {
+    SkASSERT(bm.config() == SkBitmap::kARGB_8888_Config);
+    uint8_t* p = (uint8_t*)bm.getPixels();
+    uint8_t* stop = p + bm.getSize();
+    while (p < stop) {
+        // swap red/blue (to go from ARGB(int) to RGBA(memory) and premultiply
+        unsigned scale = SkAlpha255To256(p[3]);
+        unsigned r = p[2];
+        unsigned b = p[0];
+        p[0] = SkAlphaMul(r, scale);
+        p[1] = SkAlphaMul(p[1], scale);
+        p[2] = SkAlphaMul(b, scale);
+        p += 4;
+    }
+}
+
+SkCanvas* SampleWindow::beforeChildren(SkCanvas* canvas) {
+    if (kGPU_CanvasType != fCanvasType) {
+#ifdef SK_SUPPORT_GL
+        detachGL();
+#endif
+    }
+
+    switch (fCanvasType) {
+        case kRaster_CanvasType:
+            canvas = this->INHERITED::beforeChildren(canvas);
+            break;
+        case kPicture_CanvasType:
+            fPicture = new SkPicture;
+            canvas = fPicture->beginRecording(9999, 9999);
+            break;
+        case kGPU_CanvasType: {
+            if (make3DReady()) {
+                SkDevice* device = canvas->getDevice();
+                const SkBitmap& bitmap = device->accessBitmap(true);
+
+                GrRenderTarget* renderTarget;
+                renderTarget = fGrContext->createRenderTargetFrom3DApiState();
+                fGpuCanvas = new SkGpuCanvas(fGrContext, renderTarget);
+                renderTarget->unref();
+
+                device = fGpuCanvas->createDevice(SkBitmap::kARGB_8888_Config,
+                                                  bitmap.width(), bitmap.height(),
+                                                  false, false);
+                fGpuCanvas->setDevice(device)->unref();
+
+                fGpuCanvas->concat(canvas->getTotalMatrix());
+                canvas = fGpuCanvas;
+
+            } else {
+                canvas = this->INHERITED::beforeChildren(canvas);
+            }
+            break;
+        }
+    }
+
+    if (fUseClip) {
+        canvas->drawColor(0xFFFF88FF);
+        canvas->clipPath(fClipPath);
+    }
+
+    return canvas;
+}
+
+static void paint_rgn(const SkBitmap& bm, const SkIRect& r,
+                      const SkRegion& rgn) {
+    SkCanvas    canvas(bm);
+    SkRegion    inval(rgn);
+
+    inval.translate(r.fLeft, r.fTop);
+    canvas.clipRegion(inval);
+    canvas.drawColor(0xFFFF8080);
+}
+
+void SampleWindow::afterChildren(SkCanvas* orig) {
+    if (fRequestGrabImage) {
+        fRequestGrabImage = false;
+
+        SkCanvas* canvas = fGpuCanvas ? fGpuCanvas : orig;
+        SkDevice* device = canvas->getDevice();
+        SkBitmap bmp;
+        if (device->accessBitmap(false).copyTo(&bmp, SkBitmap::kARGB_8888_Config)) {
+            static int gSampleGrabCounter;
+            SkString name;
+            name.printf("sample_grab_%d", gSampleGrabCounter++);
+            SkImageEncoder::EncodeFile(name.c_str(), bmp,
+                                       SkImageEncoder::kPNG_Type, 100);
+        }
+    }
+
+    switch (fCanvasType) {
+        case kRaster_CanvasType:
+            break;
+        case kPicture_CanvasType:
+            if (true) {
+                SkPicture* pict = new SkPicture(*fPicture);
+                fPicture->unref();
+                orig->drawPicture(*pict);
+                pict->unref();
+            } else if (true) {
+                SkDynamicMemoryWStream ostream;
+                fPicture->serialize(&ostream);
+                fPicture->unref();
+
+                SkMemoryStream istream(ostream.getStream(), ostream.getOffset());
+                SkPicture pict(&istream);
+                orig->drawPicture(pict);
+            } else {
+                fPicture->draw(orig);
+                fPicture->unref();
+            }
+            fPicture = NULL;
+            break;
+#ifdef SK_SUPPORT_GL
+        case kGPU_CanvasType:
+            if (fShowZoomer) {
+                this->showZoomer(fGpuCanvas);
+            }
+            delete fGpuCanvas;
+            fGpuCanvas = NULL;
+            presentGL();
+            break;
+#endif
+    }
+
+    // Do this after presentGL and other finishing, rather than in afterChild
+    if (fMeasureFPS && fMeasureFPS_Time) {
+        fMeasureFPS_Time = SkTime::GetMSecs() - fMeasureFPS_Time;
+        this->updateTitle();
+        postInvalDelay(this->getSinkID());
+    }
+
+    //    if ((fScrollTestX | fScrollTestY) != 0)
+    if (false) {
+        const SkBitmap& bm = orig->getDevice()->accessBitmap(true);
+        int dx = fScrollTestX * 7;
+        int dy = fScrollTestY * 7;
+        SkIRect r;
+        SkRegion inval;
+
+        r.set(50, 50, 50+100, 50+100);
+        bm.scrollRect(&r, dx, dy, &inval);
+        paint_rgn(bm, r, inval);
+    }        
+}
+
+void SampleWindow::beforeChild(SkView* child, SkCanvas* canvas) {
+    if (fScale) {
+        SkScalar scale = SK_Scalar1 * 7 / 10;
+        SkScalar cx = this->width() / 2;
+        SkScalar cy = this->height() / 2;
+        canvas->translate(cx, cy);
+        canvas->scale(scale, scale);
+        canvas->translate(-cx, -cy);
+    }
+    if (fRotate) {
+        SkScalar cx = this->width() / 2;
+        SkScalar cy = this->height() / 2;
+        canvas->translate(cx, cy);
+        canvas->rotate(SkIntToScalar(30));
+        canvas->translate(-cx, -cy);
+    }
+
+    canvas->setDrawFilter(new FlagsDrawFilter(fLCDState, fAAState,
+                                       fFilterState, fHintingState))->unref();
+
+    if (fMeasureFPS) {
+        fMeasureFPS_Time = 0;   // 0 means the child is not aware of repeat-draw
+        if (SampleView::SetRepeatDraw(child, FPS_REPEAT_COUNT)) {
+            fMeasureFPS_Time = SkTime::GetMSecs();
+        }
+    } else {
+        (void)SampleView::SetRepeatDraw(child, 1);
+    }
+    (void)SampleView::SetUsePipe(child, fUsePipe);
+}
+
+void SampleWindow::afterChild(SkView* child, SkCanvas* canvas) {
+    canvas->setDrawFilter(NULL);
+}
+
+static SkBitmap::Config gConfigCycle[] = {
+    SkBitmap::kNo_Config,           // none -> none
+    SkBitmap::kNo_Config,           // a1 -> none
+    SkBitmap::kNo_Config,           // a8 -> none
+    SkBitmap::kNo_Config,           // index8 -> none
+    SkBitmap::kARGB_4444_Config,    // 565 -> 4444
+    SkBitmap::kARGB_8888_Config,    // 4444 -> 8888
+    SkBitmap::kRGB_565_Config       // 8888 -> 565
+};
+
+static SkBitmap::Config cycle_configs(SkBitmap::Config c) {
+    return gConfigCycle[c];
+}
+
+void SampleWindow::changeZoomLevel(int delta) {
+    fZoomLevel += delta;
+    if (fZoomLevel > 0) {
+        fZoomLevel = SkMin32(fZoomLevel, MAX_ZOOM_LEVEL);
+        fZoomScale = SkIntToScalar(fZoomLevel + 1);
+    } else if (fZoomLevel < 0) {
+        fZoomLevel = SkMax32(fZoomLevel, MIN_ZOOM_LEVEL);
+        fZoomScale = SK_Scalar1 / (1 - fZoomLevel);
+    } else {
+        fZoomScale = SK_Scalar1;
+    }
+
+    this->inval(NULL);
+}
+
+bool SampleWindow::nextSample() {
+    fCurrIndex = (fCurrIndex + 1) % fSamples.count();
+    this->loadView(fSamples[fCurrIndex]());
+    return true;
+}
+
+bool SampleWindow::onEvent(const SkEvent& evt) {
+    if (evt.isType(ANIMATING_EVENTTYPE)) {
+        if (fAnimating) {
+            this->nextSample();
+            this->postAnimatingEvent();
+        }
+        return true;
+    }
+    if (evt.isType("set-curr-index")) {
+        fCurrIndex = evt.getFast32() % fSamples.count();
+        this->loadView(fSamples[fCurrIndex]());
+        return true;
+    }
+    if (isInvalEvent(evt)) {
+        this->inval(NULL);
+        return true;
+    }
+    return this->INHERITED::onEvent(evt);
+}
+
+bool SampleWindow::onQuery(SkEvent* query) {
+    if (query->isType("get-slide-count")) {
+        query->setFast32(fSamples.count());
+        return true;
+    }
+    if (query->isType("get-slide-title")) {
+        SkView* view = fSamples[query->getFast32()]();
+        SkEvent evt(gTitleEvtName);
+        if (view->doQuery(&evt)) {
+            query->setString("title", evt.findString(gTitleEvtName));
+        }
+        SkSafeUnref(view);
+        return true;
+    }
+    if (query->isType("use-fast-text")) {
+        SkEvent evt(gFastTextEvtName);
+        return curr_view(this)->doQuery(&evt);
+    }
+    return this->INHERITED::onQuery(query);
+}
+
+static void cleanup_for_filename(SkString* name) {
+    char* str = name->writable_str();
+    for (size_t i = 0; i < name->size(); i++) {
+        switch (str[i]) {
+            case ':': str[i] = '-'; break;
+            case '/': str[i] = '-'; break;
+            case ' ': str[i] = '_'; break;
+            default: break;
+        }
+    }
+}
+
+bool SampleWindow::onHandleChar(SkUnichar uni) {
+    {
+        SkView* view = curr_view(this);
+        if (view) {
+            SkEvent evt(gCharEvtName);
+            evt.setFast32(uni);
+            if (view->doQuery(&evt)) {
+                return true;
+            }
+        }
+    }
+
+    int dx = 0xFF;
+    int dy = 0xFF;
+
+    switch (uni) {
+        case '5': dx =  0; dy =  0; break;
+        case '8': dx =  0; dy = -1; break;
+        case '6': dx =  1; dy =  0; break;
+        case '2': dx =  0; dy =  1; break;
+        case '4': dx = -1; dy =  0; break;
+        case '7': dx = -1; dy = -1; break;
+        case '9': dx =  1; dy = -1; break;
+        case '3': dx =  1; dy =  1; break;
+        case '1': dx = -1; dy =  1; break;
+
+        default:
+            break;
+    }
+
+    if (0xFF != dx && 0xFF != dy) {
+        if ((dx | dy) == 0) {
+            fScrollTestX = fScrollTestY = 0;
+        } else {
+            fScrollTestX += dx;
+            fScrollTestY += dy;
+        }
+        this->inval(NULL);
+        return true;
+    }
+
+    switch (uni) {
+        case 'a':
+            fAnimating = !fAnimating;
+            this->postAnimatingEvent();
+            this->updateTitle();
+            return true;
+        case 'b':
+            fAAState = cycle_tristate(fAAState);
+            this->updateTitle();
+            this->inval(NULL);
+            break;
+        case 'c':
+            fUseClip = !fUseClip;
+            this->inval(NULL);
+            this->updateTitle();
+            return true;
+        case 'd':
+            SkGraphics::SetFontCacheUsed(0);
+            return true;
+        case 'f':
+            fMeasureFPS = !fMeasureFPS;
+            this->inval(NULL);
+            break;
+        case 'g':
+            fRequestGrabImage = true;
+            this->inval(NULL);
+            break;
+        case 'h':
+            fHintingState = cycle_tristate(fHintingState);
+            this->updateTitle();
+            this->inval(NULL);
+            break;
+        case 'i':
+            this->zoomIn();
+            break;
+        case 'l':
+            fLCDState = cycle_tristate(fLCDState);
+            this->updateTitle();
+            this->inval(NULL);
+            break;
+        case 'n':
+            fFilterState = cycle_tristate(fFilterState);
+            this->updateTitle();
+            this->inval(NULL);
+            break;
+        case 'o':
+            this->zoomOut();
+            break;
+        case 'p':
+            fUsePipe = !fUsePipe;
+            this->updateTitle();
+            this->inval(NULL);
+            break;
+        case 'r':
+            fRotate = !fRotate;
+            this->inval(NULL);
+            this->updateTitle();
+            return true;
+        case 's':
+            fScale = !fScale;
+            this->inval(NULL);
+            this->updateTitle();
+            return true;
+        case 'x':
+            fFlipAxis ^= kFlipAxis_X;
+            this->updateTitle();
+            this->inval(NULL);
+            break;
+        case 'y':
+            fFlipAxis ^= kFlipAxis_Y;
+            this->updateTitle();
+            this->inval(NULL);
+            break;
+        case 'z':
+            this->toggleZoomer();
+            break;
+        default:
+            break;
+    }
+
+    return this->INHERITED::onHandleChar(uni);
+}
+
+#include "SkDumpCanvas.h"
+
+bool SampleWindow::onHandleKey(SkKey key) {
+    {
+        SkView* view = curr_view(this);
+        if (view) {
+            SkEvent evt(gKeyEvtName);
+            evt.setFast32(key);
+            if (view->doQuery(&evt)) {
+                return true;
+            }
+        }
+    }
+
+    switch (key) {
+        case kRight_SkKey:
+            if (this->nextSample()) {
+                return true;
+            }
+            break;
+        case kLeft_SkKey:
+            fCanvasType = cycle_canvastype(fCanvasType);
+            this->updateTitle();
+            this->inval(NULL);
+            return true;
+        case kUp_SkKey:
+            if (USE_ARROWS_FOR_ZOOM) {
+                this->changeZoomLevel(1);
+            } else {
+                fNClip = !fNClip;
+                this->inval(NULL);
+            }
+            this->updateTitle();
+            return true;
+        case kDown_SkKey:
+            if (USE_ARROWS_FOR_ZOOM) {
+                this->changeZoomLevel(-1);
+            } else {
+                this->setConfig(cycle_configs(this->getBitmap().config()));
+            }
+            this->updateTitle();
+            return true;
+        case kOK_SkKey:
+            if (false) {
+                SkDebugfDumper dumper;
+                SkDumpCanvas dc(&dumper);
+                this->draw(&dc);
+            } else {
+                fRepeatDrawing = !fRepeatDrawing;
+                if (fRepeatDrawing) {
+                    this->inval(NULL);
+                }
+            }
+            return true;
+        case kBack_SkKey:
+            this->loadView(NULL);
+            return true;
+        default:
+            break;
+    }
+    return this->INHERITED::onHandleKey(key);
+}
+
+///////////////////////////////////////////////////////////////////////////////
+
+static const char gGestureClickType[] = "GestureClickType";
+
+bool SampleWindow::onDispatchClick(int x, int y, Click::State state) {
+    if (Click::kMoved_State == state) {
+        updatePointer(x, y);
+    }
+    int w = SkScalarRound(this->width());
+    int h = SkScalarRound(this->height());
+
+    // check for the resize-box
+    if (w - x < 16 && h - y < 16) {
+        return false;   // let the OS handle the click
+    } else {
+        return this->INHERITED::onDispatchClick(x, y, state);
+    }
+}
+
+class GestureClick : public SkView::Click {
+public:
+    GestureClick(SkView* target) : SkView::Click(target) {
+        this->setType(gGestureClickType);
+    }
+
+    static bool IsGesture(Click* click) {
+        return click->isType(gGestureClickType);
+    }
+};
+
+SkView::Click* SampleWindow::onFindClickHandler(SkScalar x, SkScalar y) {
+    return new GestureClick(this);
+}
+
+bool SampleWindow::onClick(Click* click) {
+    if (GestureClick::IsGesture(click)) {
+        float x = SkScalarToFloat(click->fCurr.fX);
+        float y = SkScalarToFloat(click->fCurr.fY);
+        switch (click->fState) {
+            case SkView::Click::kDown_State:
+                fGesture.touchBegin(click, x, y);
+                break;
+            case SkView::Click::kMoved_State:
+                fGesture.touchMoved(click, x, y);
+                this->inval(NULL);
+                break;
+            case SkView::Click::kUp_State:
+                fGesture.touchEnd(click);
+                this->inval(NULL);
+                break;
+        }
+        return true;
+    }
+    return false;
+}
+
+///////////////////////////////////////////////////////////////////////////////
+
+void SampleWindow::loadView(SkView* view) {
+    SkView::F2BIter iter(this);
+    SkView* prev = iter.next();
+    if (prev) {
+        prev->detachFromParent();
+    }
+
+    if (NULL == view) {
+        view = create_overview(fSamples.count(), fSamples.begin());
+    }
+    view->setVisibleP(true);
+    view->setClipToBounds(false);
+    this->attachChildToFront(view)->unref();
+    view->setSize(this->width(), this->height());
+
+    this->updateTitle();
+}
+
+static const char* gConfigNames[] = {
+    "unknown config",
+    "A1",
+    "A8",
+    "Index8",
+    "565",
+    "4444",
+    "8888"
+};
+
+static const char* configToString(SkBitmap::Config c) {
+    return gConfigNames[c];
+}
+
+static const char* gCanvasTypePrefix[] = {
+    "raster: ",
+    "picture: ",
+    "opengl: "
+};
+
+static const char* trystate_str(SkTriState state,
+                                const char trueStr[], const char falseStr[]) {
+    if (kTrue_SkTriState == state) {
+        return trueStr;
+    } else if (kFalse_SkTriState == state) {
+        return falseStr;
+    }
+    return NULL;
+}
+
+void SampleWindow::updateTitle() {
+    SkString title;
+
+    SkView::F2BIter iter(this);
+    SkView* view = iter.next();
+    SkEvent evt(gTitleEvtName);
+    if (view->doQuery(&evt)) {
+        title.set(evt.findString(gTitleEvtName));
+    }
+    if (title.size() == 0) {
+        title.set("<unknown>");
+    }
+
+    title.prepend(gCanvasTypePrefix[fCanvasType]);
+
+    title.prepend(" ");
+    title.prepend(configToString(this->getBitmap().config()));
+
+    if (fAnimating) {
+        title.prepend("<A> ");
+    }
+    if (fScale) {
+        title.prepend("<S> ");
+    }
+    if (fRotate) {
+        title.prepend("<R> ");
+    }
+    if (fNClip) {
+        title.prepend("<C> ");
+    }
+
+    title.prepend(trystate_str(fLCDState, "LCD ", "lcd "));
+    title.prepend(trystate_str(fAAState, "AA ", "aa "));
+    title.prepend(trystate_str(fFilterState, "H ", "h "));
+    title.prepend(fFlipAxis & kFlipAxis_X ? "X " : NULL);
+    title.prepend(fFlipAxis & kFlipAxis_Y ? "Y " : NULL);
+
+    if (fZoomLevel) {
+        title.prependf("{%d} ", fZoomLevel);
+    }
+    
+    if (fMeasureFPS) {
+        title.appendf(" %6.1f ms", fMeasureFPS_Time / (float)FPS_REPEAT_MULTIPLIER);
+    }
+    if (fUsePipe && SampleView::IsSampleView(view)) {
+        title.prepend("<P> ");
+    }
+    if (SampleView::IsSampleView(view)) {
+        title.prepend("! ");
+    }
+
+    this->setTitle(title.c_str());
+}
+
+void SampleWindow::onSizeChange() {
+    this->INHERITED::onSizeChange();
+
+    SkView::F2BIter iter(this);
+    SkView* view = iter.next();
+    view->setSize(this->width(), this->height());
+
+    // rebuild our clippath
+    {
+        const SkScalar W = this->width();
+        const SkScalar H = this->height();
+
+        fClipPath.reset();
+#if 0
+        for (SkScalar y = SK_Scalar1; y < H; y += SkIntToScalar(32)) {
+            SkRect r;
+            r.set(SK_Scalar1, y, SkIntToScalar(30), y + SkIntToScalar(30));
+            for (; r.fLeft < W; r.offset(SkIntToScalar(32), 0))
+                fClipPath.addRect(r);
+        }
+#else
+        SkRect r;
+        r.set(0, 0, W, H);
+        fClipPath.addRect(r, SkPath::kCCW_Direction);
+        r.set(W/4, H/4, W*3/4, H*3/4);
+        fClipPath.addRect(r, SkPath::kCW_Direction);
+#endif
+    }
+
+    this->updateTitle();    // to refresh our config
+}
+
+///////////////////////////////////////////////////////////////////////////////
+
+static const char is_sample_view_tag[] = "sample-is-sample-view";
+static const char repeat_count_tag[] = "sample-set-repeat-count";
+static const char set_use_pipe_tag[] = "sample-set-use-pipe";
+
+bool SampleView::IsSampleView(SkView* view) {
+    SkEvent evt(is_sample_view_tag);
+    return view->doQuery(&evt);
+}
+
+bool SampleView::SetRepeatDraw(SkView* view, int count) {
+    SkEvent evt(repeat_count_tag);
+    evt.setFast32(count);
+    return view->doEvent(evt);
+}
+
+bool SampleView::SetUsePipe(SkView* view, bool pred) {
+    SkEvent evt(set_use_pipe_tag);
+    evt.setFast32(pred);
+    return view->doEvent(evt);
+}
+
+bool SampleView::onEvent(const SkEvent& evt) {
+    if (evt.isType(repeat_count_tag)) {
+        fRepeatCount = evt.getFast32();
+        return true;
+    }
+    if (evt.isType(set_use_pipe_tag)) {
+        fUsePipe = !!evt.getFast32();
+        return true;
+    }
+    return this->INHERITED::onEvent(evt);
+}
+
+bool SampleView::onQuery(SkEvent* evt) {
+    if (evt->isType(is_sample_view_tag)) {
+        return true;
+    }
+    return this->INHERITED::onQuery(evt);
+}
+
+#ifdef TEST_GPIPE
+    #include "SkGPipe.h"
+
+class SimplePC : public SkGPipeController {
+public:
+    SimplePC(SkCanvas* target);
+    ~SimplePC();
+
+    virtual void* requestBlock(size_t minRequest, size_t* actual);
+    virtual void notifyWritten(size_t bytes);
+
+private:
+    SkGPipeReader   fReader;
+    void*           fBlock;
+    size_t          fBlockSize;
+    size_t          fBytesWritten;
+    int             fAtomsWritten;
+    SkGPipeReader::Status   fStatus;
+
+    size_t        fTotalWritten;
+};
+
+SimplePC::SimplePC(SkCanvas* target) : fReader(target) {
+    fBlock = NULL;
+    fBlockSize = fBytesWritten = 0;
+    fStatus = SkGPipeReader::kDone_Status;
+    fTotalWritten = 0;
+    fAtomsWritten = 0;
+}
+
+SimplePC::~SimplePC() {
+//    SkASSERT(SkGPipeReader::kDone_Status == fStatus);
+    sk_free(fBlock);
+
+    if (fTotalWritten) {
+        SkDebugf("--- %d bytes %d atoms, status %d\n", fTotalWritten,
+                 fAtomsWritten, fStatus);
+    }
+}
+
+void* SimplePC::requestBlock(size_t minRequest, size_t* actual) {
+    sk_free(fBlock);
+
+    fBlockSize = minRequest * 4;
+    fBlock = sk_malloc_throw(fBlockSize);
+    fBytesWritten = 0;
+    *actual = fBlockSize;
+    return fBlock;
+}
+
+void SimplePC::notifyWritten(size_t bytes) {
+    SkASSERT(fBytesWritten + bytes <= fBlockSize);
+    
+#ifdef  PIPE_FILE
+    //File is open in append mode
+    FILE* f = fopen(FILE_PATH, "ab");
+    SkASSERT(f != NULL);
+    fwrite((const char*)fBlock + fBytesWritten, 1, bytes, f);
+    fclose(f);
+#endif
+    
+    fStatus = fReader.playback((const char*)fBlock + fBytesWritten, bytes);
+    SkASSERT(SkGPipeReader::kError_Status != fStatus);
+    fBytesWritten += bytes;
+    fTotalWritten += bytes;
+
+    fAtomsWritten += 1;
+}
+
+#endif
+
+
+void SampleView::onDraw(SkCanvas* canvas) {
+#ifdef TEST_GPIPE
+    SimplePC controller(canvas);
+    SkGPipeWriter writer;
+    if (fUsePipe) {
+        uint32_t flags = SkGPipeWriter::kCrossProcess_Flag;
+//        flags = 0;
+        canvas = writer.startRecording(&controller, flags);
+    }
+#endif
+
+    this->onDrawBackground(canvas);
+
+    for (int i = 0; i < fRepeatCount; i++) {
+        SkAutoCanvasRestore acr(canvas, true);
+        this->onDrawContent(canvas);
+    }
+}
+
+void SampleView::onDrawBackground(SkCanvas* canvas) {
+    canvas->drawColor(fBGColor);
+}
+
+///////////////////////////////////////////////////////////////////////////////
+
+template <typename T> void SkTBSort(T array[], int count) {
+    for (int i = 1; i < count - 1; i++) {
+        bool didSwap = false;
+        for (int j = count - 1; j > i; --j) {
+            if (array[j] < array[j-1]) {
+                T tmp(array[j-1]);
+                array[j-1] = array[j];
+                array[j] = tmp;
+                didSwap = true;
+            }
+        }
+        if (!didSwap) {
+            break;
+        }
+    }
+
+    for (int k = 0; k < count - 1; k++) {
+        SkASSERT(!(array[k+1] < array[k]));
+    }
+}
+
+#include "SkRandom.h"
+
+static void rand_rect(SkIRect* rect, SkRandom& rand) {
+    int bits = 8;
+    int shift = 32 - bits;
+    rect->set(rand.nextU() >> shift, rand.nextU() >> shift,
+              rand.nextU() >> shift, rand.nextU() >> shift);
+    rect->sort();
+}
+
+static void dumpRect(const SkIRect& r) {
+    SkDebugf(" { %d, %d, %d, %d },\n",
+             r.fLeft, r.fTop,
+             r.fRight, r.fBottom);
+}
+
+static void test_rects(const SkIRect rect[], int count) {
+    SkRegion rgn0, rgn1;
+
+    for (int i = 0; i < count; i++) {
+        rgn0.op(rect[i], SkRegion::kUnion_Op);
+     //   dumpRect(rect[i]);
+    }
+    rgn1.setRects(rect, count);
+
+    if (rgn0 != rgn1) {
+        SkDebugf("\n");
+        for (int i = 0; i < count; i++) {
+            dumpRect(rect[i]);
+        }
+        SkDebugf("\n");
+    }
+}
+
+static void test() {
+    size_t i;
+
+    const SkIRect r0[] = {
+        { 0, 0, 1, 1 },
+        { 2, 2, 3, 3 },
+    };
+    const SkIRect r1[] = {
+        { 0, 0, 1, 3 },
+        { 1, 1, 2, 2 },
+        { 2, 0, 3, 3 },
+    };
+    const SkIRect r2[] = {
+        { 0, 0, 1, 2 },
+        { 2, 1, 3, 3 },
+        { 4, 0, 5, 1 },
+        { 6, 0, 7, 4 },
+    };
+
+    static const struct {
+        const SkIRect* fRects;
+        int            fCount;
+    } gRecs[] = {
+        { r0, SK_ARRAY_COUNT(r0) },
+        { r1, SK_ARRAY_COUNT(r1) },
+        { r2, SK_ARRAY_COUNT(r2) },
+    };
+
+    for (i = 0; i < SK_ARRAY_COUNT(gRecs); i++) {
+        test_rects(gRecs[i].fRects, gRecs[i].fCount);
+    }
+
+    SkRandom rand;
+    for (i = 0; i < 10000; i++) {
+        SkRegion rgn0, rgn1;
+
+        const int N = 8;
+        SkIRect rect[N];
+        for (int j = 0; j < N; j++) {
+            rand_rect(&rect[j], rand);
+        }
+        test_rects(rect, N);
+    }
+}
+
+SkOSWindow* create_sk_window(void* hwnd) {
+//    test();
+    return new SampleWindow(hwnd);
+}
+
+void get_preferred_size(int* x, int* y, int* width, int* height) {
+    *x = 10;
+    *y = 50;
+    *width = 640;
+    *height = 480;
+}
+
+void application_init() {
+//    setenv("ANDROID_ROOT", "../../../data", 0);
+#ifdef SK_BUILD_FOR_MAC
+    setenv("ANDROID_ROOT", "/android/device/data", 0);
+#endif
+    SkGraphics::Init();
+    SkEvent::Init();
+}
+
+void application_term() {
+    SkEvent::Term();
+    SkGraphics::Term();
+}