SampleApp.cpp revision bcbc1788b478b1e54079318ad073e8490aa66fae 
1/*
2 * Copyright 2011 Google Inc.
3 *
4 * Use of this source code is governed by a BSD-style license that can be
5 * found in the LICENSE file.
6 */
7
8#include "SampleApp.h"
9
10#include "OverView.h"
11#include "SampleCode.h"
12#include "SamplePipeControllers.h"
13#include "SkCanvas.h"
14#include "SkCommandLineFlags.h"
15#include "SkData.h"
16#include "SkDevice.h"
17#include "SkGPipe.h"
18#include "SkGraphics.h"
19#include "SkImageEncoder.h"
20#include "SkOSFile.h"
21#include "SkPDFDevice.h"
22#include "SkPDFDocument.h"
23#include "SkPaint.h"
24#include "SkPicture.h"
25#include "SkPictureRecorder.h"
26#include "SkStream.h"
27#include "SkSurface.h"
28#include "SkTSort.h"
29#include "SkTime.h"
30#include "SkTypeface.h"
31#include "SkWindow.h"
32#include "TransitionView.h"
33#include "sk_tool_utils.h"
34
35#if SK_SUPPORT_GPU
36#include "gl/GrGLInterface.h"
37#include "gl/GrGLUtil.h"
38#include "GrRenderTarget.h"
39#include "GrContext.h"
40#include "SkGpuDevice.h"
41#else
42class GrContext;
43#endif
44
45extern SampleView* CreateSamplePictFileView(const char filename[]);
46
47class PictFileFactory : public SkViewFactory {
48    SkString fFilename;
49public:
50    PictFileFactory(const SkString& filename) : fFilename(filename) {}
51    virtual SkView* operator() () const SK_OVERRIDE {
52        return CreateSamplePictFileView(fFilename.c_str());
53    }
54};
55
56#ifdef SAMPLE_PDF_FILE_VIEWER
57extern SampleView* CreateSamplePdfFileViewer(const char filename[]);
58
59class PdfFileViewerFactory : public SkViewFactory {
60    SkString fFilename;
61public:
62    PdfFileViewerFactory(const SkString& filename) : fFilename(filename) {}
63    virtual SkView* operator() () const SK_OVERRIDE {
64        return CreateSamplePdfFileViewer(fFilename.c_str());
65    }
66};
67#endif  // SAMPLE_PDF_FILE_VIEWER
68
69#define PIPE_FILEx
70#ifdef  PIPE_FILE
71#define FILE_PATH "/path/to/drawing.data"
72#endif
73
74#define PIPE_NETx
75#ifdef  PIPE_NET
76#include "SkSockets.h"
77SkTCPServer gServer;
78#endif
79
80#define USE_ARROWS_FOR_ZOOM true
81
82#if SK_ANGLE
83//#define DEFAULT_TO_ANGLE 1
84#else
85#define DEFAULT_TO_GPU 0 // if 1 default rendering is on GPU
86#endif
87
88#define ANIMATING_EVENTTYPE "nextSample"
89#define ANIMATING_DELAY     250
90
91#ifdef SK_DEBUG
92    #define FPS_REPEAT_MULTIPLIER   1
93#else
94    #define FPS_REPEAT_MULTIPLIER   10
95#endif
96#define FPS_REPEAT_COUNT    (10 * FPS_REPEAT_MULTIPLIER)
97
98static SampleWindow* gSampleWindow;
99
100static bool gShowGMBounds;
101
102static void post_event_to_sink(SkEvent* evt, SkEventSink* sink) {
103    evt->setTargetID(sink->getSinkID())->post();
104}
105
106///////////////////////////////////////////////////////////////////////////////
107
108static const char* skip_until(const char* str, const char* skip) {
109    if (!str) {
110        return NULL;
111    }
112    return strstr(str, skip);
113}
114
115static const char* skip_past(const char* str, const char* skip) {
116    const char* found = skip_until(str, skip);
117    if (!found) {
118        return NULL;
119    }
120    return found + strlen(skip);
121}
122
123static const char* gPrefFileName = "sampleapp_prefs.txt";
124
125static bool readTitleFromPrefs(SkString* title) {
126    SkFILEStream stream(gPrefFileName);
127    if (!stream.isValid()) {
128        return false;
129    }
130
131    size_t len = stream.getLength();
132    SkString data(len);
133    stream.read(data.writable_str(), len);
134    const char* s = data.c_str();
135
136    s = skip_past(s, "curr-slide-title");
137    s = skip_past(s, "=");
138    s = skip_past(s, "\"");
139    const char* stop = skip_until(s, "\"");
140    if (stop > s) {
141        title->set(s, stop - s);
142        return true;
143    }
144    return false;
145}
146
147static void writeTitleToPrefs(const char* title) {
148    SkFILEWStream stream(gPrefFileName);
149    SkString data;
150    data.printf("curr-slide-title = \"%s\"\n", title);
151    stream.write(data.c_str(), data.size());
152}
153
154///////////////////////////////////////////////////////////////////////////////
155
156class SampleWindow::DefaultDeviceManager : public SampleWindow::DeviceManager {
157public:
158
159    DefaultDeviceManager() {
160#if SK_SUPPORT_GPU
161        fCurContext = NULL;
162        fCurIntf = NULL;
163        fCurRenderTarget = NULL;
164        fMSAASampleCount = 0;
165#endif
166        fBackend = kNone_BackEndType;
167    }
168
169    virtual ~DefaultDeviceManager() {
170#if SK_SUPPORT_GPU
171        SkSafeUnref(fCurContext);
172        SkSafeUnref(fCurIntf);
173        SkSafeUnref(fCurRenderTarget);
174#endif
175    }
176
177    virtual void setUpBackend(SampleWindow* win, int msaaSampleCount) {
178        SkASSERT(kNone_BackEndType == fBackend);
179
180        fBackend = kNone_BackEndType;
181
182#if SK_SUPPORT_GPU
183        switch (win->getDeviceType()) {
184            case kRaster_DeviceType:
185                // fallthrough
186            case kPicture_DeviceType:
187                // fallthrough
188            case kGPU_DeviceType:
189                // fallthrough
190            case kNullGPU_DeviceType:
191                // all these guys use the native backend
192                fBackend = kNativeGL_BackEndType;
193                break;
194#if SK_ANGLE
195            case kANGLE_DeviceType:
196                // ANGLE is really the only odd man out
197                fBackend = kANGLE_BackEndType;
198                break;
199#endif // SK_ANGLE
200            default:
201                SkASSERT(false);
202                break;
203        }
204        AttachmentInfo attachmentInfo;
205        bool result = win->attach(fBackend, msaaSampleCount, &attachmentInfo);
206        if (!result) {
207            SkDebugf("Failed to initialize GL");
208            return;
209        }
210        fMSAASampleCount = msaaSampleCount;
211
212        SkASSERT(NULL == fCurIntf);
213        SkAutoTUnref<const GrGLInterface> glInterface;
214        switch (win->getDeviceType()) {
215            case kRaster_DeviceType:
216                // fallthrough
217            case kPicture_DeviceType:
218                // fallthrough
219            case kGPU_DeviceType:
220                // all these guys use the native interface
221                glInterface.reset(GrGLCreateNativeInterface());
222                break;
223#if SK_ANGLE
224            case kANGLE_DeviceType:
225                glInterface.reset(GrGLCreateANGLEInterface());
226                break;
227#endif // SK_ANGLE
228            case kNullGPU_DeviceType:
229                glInterface.reset(GrGLCreateNullInterface());
230                break;
231            default:
232                SkASSERT(false);
233                break;
234        }
235
236        // Currently SampleApp does not use NVPR. TODO: Provide an NVPR device type that is skipped
237        // when the driver doesn't support NVPR.
238        fCurIntf = GrGLInterfaceRemoveNVPR(glInterface.get());
239
240        SkASSERT(NULL == fCurContext);
241        fCurContext = GrContext::Create(kOpenGL_GrBackend, (GrBackendContext) fCurIntf);
242
243        if (NULL == fCurContext || NULL == fCurIntf) {
244            // We need some context and interface to see results
245            SkSafeUnref(fCurContext);
246            SkSafeUnref(fCurIntf);
247            fCurContext = NULL;
248            fCurIntf = NULL;
249            SkDebugf("Failed to setup 3D");
250
251            win->detach();
252        }
253#endif // SK_SUPPORT_GPU
254        // call windowSizeChanged to create the render target
255        this->windowSizeChanged(win);
256    }
257
258    virtual void tearDownBackend(SampleWindow *win) {
259#if SK_SUPPORT_GPU
260        SkSafeUnref(fCurContext);
261        fCurContext = NULL;
262
263        SkSafeUnref(fCurIntf);
264        fCurIntf = NULL;
265
266        SkSafeUnref(fCurRenderTarget);
267        fCurRenderTarget = NULL;
268#endif
269        win->detach();
270        fBackend = kNone_BackEndType;
271    }
272
273    virtual SkCanvas* createCanvas(SampleWindow::DeviceType dType,
274                                   SampleWindow* win) {
275#if SK_SUPPORT_GPU
276        if (IsGpuDeviceType(dType) && NULL != fCurContext) {
277            SkAutoTUnref<SkBaseDevice> device(new SkGpuDevice(fCurContext, fCurRenderTarget));
278            return new SkCanvas(device);
279        } else
280#endif
281        {
282            return NULL;
283        }
284    }
285
286    virtual void publishCanvas(SampleWindow::DeviceType dType,
287                               SkCanvas* canvas,
288                               SampleWindow* win) {
289#if SK_SUPPORT_GPU
290        if (fCurContext) {
291            // in case we have queued drawing calls
292            fCurContext->flush();
293
294            if (!IsGpuDeviceType(dType)) {
295                // need to send the raster bits to the (gpu) window
296                fCurContext->setRenderTarget(fCurRenderTarget);
297                const SkBitmap& bm = win->getBitmap();
298                fCurRenderTarget->writePixels(0, 0, bm.width(), bm.height(),
299                                             SkImageInfo2GrPixelConfig(bm.colorType(),
300                                                                       bm.alphaType()),
301                                             bm.getPixels(),
302                                             bm.rowBytes());
303            }
304        }
305#endif
306
307        win->present();
308    }
309
310    virtual void windowSizeChanged(SampleWindow* win) {
311#if SK_SUPPORT_GPU
312        if (fCurContext) {
313            AttachmentInfo attachmentInfo;
314            win->attach(fBackend, fMSAASampleCount, &attachmentInfo);
315
316            GrBackendRenderTargetDesc desc;
317            desc.fWidth = SkScalarRoundToInt(win->width());
318            desc.fHeight = SkScalarRoundToInt(win->height());
319            desc.fConfig = kSkia8888_GrPixelConfig;
320            desc.fOrigin = kBottomLeft_GrSurfaceOrigin;
321            desc.fSampleCnt = attachmentInfo.fSampleCount;
322            desc.fStencilBits = attachmentInfo.fStencilBits;
323            GrGLint buffer;
324            GR_GL_GetIntegerv(fCurIntf, GR_GL_FRAMEBUFFER_BINDING, &buffer);
325            desc.fRenderTargetHandle = buffer;
326
327            SkSafeUnref(fCurRenderTarget);
328            fCurRenderTarget = fCurContext->wrapBackendRenderTarget(desc);
329        }
330#endif
331    }
332
333    virtual GrContext* getGrContext() {
334#if SK_SUPPORT_GPU
335        return fCurContext;
336#else
337        return NULL;
338#endif
339    }
340
341    virtual GrRenderTarget* getGrRenderTarget() SK_OVERRIDE {
342#if SK_SUPPORT_GPU
343        return fCurRenderTarget;
344#else
345        return NULL;
346#endif
347    }
348
349private:
350
351#if SK_SUPPORT_GPU
352    GrContext*              fCurContext;
353    const GrGLInterface*    fCurIntf;
354    GrRenderTarget*         fCurRenderTarget;
355    int fMSAASampleCount;
356#endif
357
358    SkOSWindow::SkBackEndTypes fBackend;
359
360    typedef SampleWindow::DeviceManager INHERITED;
361};
362
363///////////////
364static const char view_inval_msg[] = "view-inval-msg";
365
366void SampleWindow::postInvalDelay() {
367    (new SkEvent(view_inval_msg, this->getSinkID()))->postDelay(1);
368}
369
370static bool isInvalEvent(const SkEvent& evt) {
371    return evt.isType(view_inval_msg);
372}
373//////////////////
374
375SkFuncViewFactory::SkFuncViewFactory(SkViewCreateFunc func)
376    : fCreateFunc(func) {
377}
378
379SkView* SkFuncViewFactory::operator() () const {
380    return (*fCreateFunc)();
381}
382
383#include "GMSampleView.h"
384
385SkGMSampleViewFactory::SkGMSampleViewFactory(GMFactoryFunc func)
386    : fFunc(func) {
387}
388
389SkView* SkGMSampleViewFactory::operator() () const {
390    skiagm::GM* gm = fFunc(NULL);
391    gm->setMode(skiagm::GM::kSample_Mode);
392    return new GMSampleView(gm);
393}
394
395SkViewRegister* SkViewRegister::gHead;
396SkViewRegister::SkViewRegister(SkViewFactory* fact) : fFact(fact) {
397    fFact->ref();
398    fChain = gHead;
399    gHead = this;
400}
401
402SkViewRegister::SkViewRegister(SkViewCreateFunc func) {
403    fFact = new SkFuncViewFactory(func);
404    fChain = gHead;
405    gHead = this;
406}
407
408SkViewRegister::SkViewRegister(GMFactoryFunc func) {
409    fFact = new SkGMSampleViewFactory(func);
410    fChain = gHead;
411    gHead = this;
412}
413
414class AutoUnrefArray {
415public:
416    AutoUnrefArray() {}
417    ~AutoUnrefArray() {
418        int count = fObjs.count();
419        for (int i = 0; i < count; ++i) {
420            fObjs[i]->unref();
421        }
422    }
423    SkRefCnt*& push_back() { return *fObjs.append(); }
424
425private:
426    SkTDArray<SkRefCnt*> fObjs;
427};
428
429// registers GMs as Samples
430// This can't be performed during static initialization because it could be
431// run before GMRegistry has been fully built.
432static void SkGMRegistyToSampleRegistry() {
433    static bool gOnce;
434    static AutoUnrefArray fRegisters;
435
436    if (!gOnce) {
437        const skiagm::GMRegistry* gmreg = skiagm::GMRegistry::Head();
438        while (gmreg) {
439            fRegisters.push_back() = new SkViewRegister(gmreg->factory());
440            gmreg = gmreg->next();
441        }
442        gOnce = true;
443    }
444}
445
446//////////////////////////////////////////////////////////////////////////////
447
448enum FlipAxisEnum {
449    kFlipAxis_X = (1 << 0),
450    kFlipAxis_Y = (1 << 1)
451};
452
453#include "SkDrawFilter.h"
454
455struct HintingState {
456    SkPaint::Hinting hinting;
457    const char* name;
458    const char* label;
459};
460static HintingState gHintingStates[] = {
461    {SkPaint::kNo_Hinting, "Mixed", NULL },
462    {SkPaint::kNo_Hinting, "None", "H0 " },
463    {SkPaint::kSlight_Hinting, "Slight", "Hs " },
464    {SkPaint::kNormal_Hinting, "Normal", "Hn " },
465    {SkPaint::kFull_Hinting, "Full", "Hf " },
466};
467
468struct FilterLevelState {
469    SkPaint::FilterLevel    fLevel;
470    const char*             fName;
471    const char*             fLabel;
472};
473static FilterLevelState gFilterLevelStates[] = {
474    { SkPaint::kNone_FilterLevel,   "Mixed",    NULL    },
475    { SkPaint::kNone_FilterLevel,   "None",     "F0 "   },
476    { SkPaint::kLow_FilterLevel,    "Low",      "F1 "   },
477    { SkPaint::kMedium_FilterLevel, "Medium",   "F2 "   },
478    { SkPaint::kHigh_FilterLevel,   "High",     "F3 "   },
479};
480
481class FlagsDrawFilter : public SkDrawFilter {
482public:
483    FlagsDrawFilter(SkOSMenu::TriState lcd, SkOSMenu::TriState aa,
484                    SkOSMenu::TriState subpixel, int hinting, int filterlevel)
485        : fLCDState(lcd)
486        , fAAState(aa)
487        , fSubpixelState(subpixel)
488        , fHintingState(hinting)
489        , fFilterLevelIndex(filterlevel)
490    {
491        SkASSERT((unsigned)filterlevel < SK_ARRAY_COUNT(gFilterLevelStates));
492    }
493
494    virtual bool filter(SkPaint* paint, Type t) {
495        if (kText_Type == t && SkOSMenu::kMixedState != fLCDState) {
496            paint->setLCDRenderText(SkOSMenu::kOnState == fLCDState);
497        }
498        if (SkOSMenu::kMixedState != fAAState) {
499            paint->setAntiAlias(SkOSMenu::kOnState == fAAState);
500        }
501        if (0 != fFilterLevelIndex) {
502            paint->setFilterLevel(gFilterLevelStates[fFilterLevelIndex].fLevel);
503        }
504        if (SkOSMenu::kMixedState != fSubpixelState) {
505            paint->setSubpixelText(SkOSMenu::kOnState == fSubpixelState);
506        }
507        if (0 != fHintingState && fHintingState < (int)SK_ARRAY_COUNT(gHintingStates)) {
508            paint->setHinting(gHintingStates[fHintingState].hinting);
509        }
510        return true;
511    }
512
513private:
514    SkOSMenu::TriState  fLCDState;
515    SkOSMenu::TriState  fAAState;
516    SkOSMenu::TriState  fSubpixelState;
517    int fHintingState;
518    int fFilterLevelIndex;
519};
520
521//////////////////////////////////////////////////////////////////////////////
522
523#define MAX_ZOOM_LEVEL  8
524#define MIN_ZOOM_LEVEL  -8
525
526static const char gCharEvtName[] = "SampleCode_Char_Event";
527static const char gKeyEvtName[] = "SampleCode_Key_Event";
528static const char gTitleEvtName[] = "SampleCode_Title_Event";
529static const char gPrefSizeEvtName[] = "SampleCode_PrefSize_Event";
530static const char gFastTextEvtName[] = "SampleCode_FastText_Event";
531static const char gUpdateWindowTitleEvtName[] = "SampleCode_UpdateWindowTitle";
532
533bool SampleCode::CharQ(const SkEvent& evt, SkUnichar* outUni) {
534    if (evt.isType(gCharEvtName, sizeof(gCharEvtName) - 1)) {
535        if (outUni) {
536            *outUni = evt.getFast32();
537        }
538        return true;
539    }
540    return false;
541}
542
543bool SampleCode::KeyQ(const SkEvent& evt, SkKey* outKey) {
544    if (evt.isType(gKeyEvtName, sizeof(gKeyEvtName) - 1)) {
545        if (outKey) {
546            *outKey = (SkKey)evt.getFast32();
547        }
548        return true;
549    }
550    return false;
551}
552
553bool SampleCode::TitleQ(const SkEvent& evt) {
554    return evt.isType(gTitleEvtName, sizeof(gTitleEvtName) - 1);
555}
556
557void SampleCode::TitleR(SkEvent* evt, const char title[]) {
558    SkASSERT(evt && TitleQ(*evt));
559    evt->setString(gTitleEvtName, title);
560}
561
562bool SampleCode::RequestTitle(SkView* view, SkString* title) {
563    SkEvent evt(gTitleEvtName);
564    if (view->doQuery(&evt)) {
565        title->set(evt.findString(gTitleEvtName));
566        return true;
567    }
568    return false;
569}
570
571bool SampleCode::PrefSizeQ(const SkEvent& evt) {
572    return evt.isType(gPrefSizeEvtName, sizeof(gPrefSizeEvtName) - 1);
573}
574
575void SampleCode::PrefSizeR(SkEvent* evt, SkScalar width, SkScalar height) {
576    SkASSERT(evt && PrefSizeQ(*evt));
577    SkScalar size[2];
578    size[0] = width;
579    size[1] = height;
580    evt->setScalars(gPrefSizeEvtName, 2, size);
581}
582
583bool SampleCode::FastTextQ(const SkEvent& evt) {
584    return evt.isType(gFastTextEvtName, sizeof(gFastTextEvtName) - 1);
585}
586
587///////////////////////////////////////////////////////////////////////////////
588
589static SkMSec gAnimTime;
590static SkMSec gAnimTimePrev;
591
592SkMSec SampleCode::GetAnimTime() { return gAnimTime; }
593SkMSec SampleCode::GetAnimTimeDelta() { return gAnimTime - gAnimTimePrev; }
594SkScalar SampleCode::GetAnimSecondsDelta() {
595    return SkDoubleToScalar(GetAnimTimeDelta() / 1000.0);
596}
597
598SkScalar SampleCode::GetAnimScalar(SkScalar speed, SkScalar period) {
599    // since gAnimTime can be up to 32 bits, we can't convert it to a float
600    // or we'll lose the low bits. Hence we use doubles for the intermediate
601    // calculations
602    double seconds = (double)gAnimTime / 1000.0;
603    double value = SkScalarToDouble(speed) * seconds;
604    if (period) {
605        value = ::fmod(value, SkScalarToDouble(period));
606    }
607    return SkDoubleToScalar(value);
608}
609
610SkScalar SampleCode::GetAnimSinScalar(SkScalar amplitude,
611                                      SkScalar periodInSec,
612                                      SkScalar phaseInSec) {
613    if (!periodInSec) {
614        return 0;
615    }
616    double t = (double)gAnimTime / 1000.0 + phaseInSec;
617    t *= SkScalarToFloat(2 * SK_ScalarPI) / periodInSec;
618    amplitude = SK_ScalarHalf * amplitude;
619    return SkScalarMul(amplitude, SkDoubleToScalar(sin(t))) + amplitude;
620}
621
622enum TilingMode {
623    kNo_Tiling,
624    kAbs_128x128_Tiling,
625    kAbs_256x256_Tiling,
626    kRel_4x4_Tiling,
627    kRel_1x16_Tiling,
628    kRel_16x1_Tiling,
629
630    kLast_TilingMode_Enum
631};
632
633struct TilingInfo {
634    const char* label;
635    SkScalar    w, h;
636};
637
638static const struct TilingInfo gTilingInfo[] = {
639    { "No tiling", SK_Scalar1        , SK_Scalar1         }, // kNo_Tiling
640    { "128x128"  , SkIntToScalar(128), SkIntToScalar(128) }, // kAbs_128x128_Tiling
641    { "256x256"  , SkIntToScalar(256), SkIntToScalar(256) }, // kAbs_256x256_Tiling
642    { "1/4x1/4"  , SK_Scalar1 / 4    , SK_Scalar1 / 4     }, // kRel_4x4_Tiling
643    { "1/1x1/16" , SK_Scalar1        , SK_Scalar1 / 16    }, // kRel_1x16_Tiling
644    { "1/16x1/1" , SK_Scalar1 / 16   , SK_Scalar1         }, // kRel_16x1_Tiling
645};
646SK_COMPILE_ASSERT((SK_ARRAY_COUNT(gTilingInfo) == kLast_TilingMode_Enum),
647                  Incomplete_tiling_labels);
648
649SkSize SampleWindow::tileSize() const {
650    SkASSERT((TilingMode)fTilingMode < kLast_TilingMode_Enum);
651    const struct TilingInfo* info = gTilingInfo + fTilingMode;
652    return SkSize::Make(info->w > SK_Scalar1 ? info->w : this->width() * info->w,
653                        info->h > SK_Scalar1 ? info->h : this->height() * info->h);
654}
655//////////////////////////////////////////////////////////////////////////////
656
657static SkView* curr_view(SkWindow* wind) {
658    SkView::F2BIter iter(wind);
659    return iter.next();
660}
661
662static bool curr_title(SkWindow* wind, SkString* title) {
663    SkView* view = curr_view(wind);
664    if (view) {
665        SkEvent evt(gTitleEvtName);
666        if (view->doQuery(&evt)) {
667            title->set(evt.findString(gTitleEvtName));
668            return true;
669        }
670    }
671    return false;
672}
673
674void SampleWindow::setZoomCenter(float x, float y)
675{
676    fZoomCenterX = x;
677    fZoomCenterY = y;
678}
679
680bool SampleWindow::zoomIn()
681{
682    // Arbitrarily decided
683    if (fFatBitsScale == 25) return false;
684    fFatBitsScale++;
685    this->inval(NULL);
686    return true;
687}
688
689bool SampleWindow::zoomOut()
690{
691    if (fFatBitsScale == 1) return false;
692    fFatBitsScale--;
693    this->inval(NULL);
694    return true;
695}
696
697void SampleWindow::updatePointer(int x, int y)
698{
699    fMouseX = x;
700    fMouseY = y;
701    if (fShowZoomer) {
702        this->inval(NULL);
703    }
704}
705
706static inline SampleWindow::DeviceType cycle_devicetype(SampleWindow::DeviceType ct) {
707    static const SampleWindow::DeviceType gCT[] = {
708        SampleWindow::kPicture_DeviceType,
709#if SK_SUPPORT_GPU
710        SampleWindow::kGPU_DeviceType,
711#if SK_ANGLE
712        SampleWindow::kANGLE_DeviceType,
713#endif // SK_ANGLE
714        SampleWindow::kRaster_DeviceType, // skip the null gpu device in normal cycling
715#endif // SK_SUPPORT_GPU
716        SampleWindow::kRaster_DeviceType
717    };
718    SK_COMPILE_ASSERT(SK_ARRAY_COUNT(gCT) == SampleWindow::kDeviceTypeCnt, array_size_mismatch);
719    return gCT[ct];
720}
721
722static void usage(const char * argv0) {
723    SkDebugf("%s [--slide sampleName] [-i resourcePath] [--msaa sampleCount] [--pictureDir dirPath] [--picture path] [--sort]\n", argv0);
724#ifdef SAMPLE_PDF_FILE_VIEWER
725    SkDebugf("                [--pdfDir pdfPath]\n");
726    SkDebugf("    pdfPath: path to directory pdf files are read from\n");
727#endif  // SAMPLE_PDF_FILE_VIEWER
728    SkDebugf("    sampleName: sample at which to start.\n");
729    SkDebugf("    resourcePath: directory that stores image resources.\n");
730    SkDebugf("    msaa: request multisampling with the given sample count.\n");
731    SkDebugf("    dirPath: path to directory skia pictures are read from\n");
732    SkDebugf("    path: path to skia picture\n");
733    SkDebugf("    --sort: sort samples by title, this would help to compare pdf rendering (P:foo.pdf) with skp rendering (P:foo.pdf)\n");
734}
735
736static SkString getSampleTitle(const SkViewFactory* sampleFactory) {
737    SkView* view = (*sampleFactory)();
738    SkString title;
739    SampleCode::RequestTitle(view, &title);
740    view->unref();
741    return title;
742}
743
744static bool compareSampleTitle(const SkViewFactory* first, const SkViewFactory* second) {
745    return strcmp(getSampleTitle(first).c_str(), getSampleTitle(second).c_str()) < 0;
746}
747
748SampleWindow::SampleWindow(void* hwnd, int argc, char** argv, DeviceManager* devManager)
749    : INHERITED(hwnd)
750    , fDevManager(NULL) {
751
752    fCurrIndex = -1;
753
754    this->registerPictFileSamples(argv, argc);
755    this->registerPictFileSample(argv, argc);
756#ifdef SAMPLE_PDF_FILE_VIEWER
757    this->registerPdfFileViewerSamples(argv, argc);
758#endif  // SAMPLE_PDF_FILE_VIEWER
759    SkGMRegistyToSampleRegistry();
760    {
761        const SkViewRegister* reg = SkViewRegister::Head();
762        while (reg) {
763            *fSamples.append() = reg->factory();
764            reg = reg->next();
765        }
766    }
767
768    bool sort = false;
769    for (int i = 0; i < argc; ++i) {
770        if (!strcmp(argv[i], "--sort")) {
771            sort = true;
772            break;
773        }
774    }
775
776    if (sort) {
777        // Sort samples, so foo.skp and foo.pdf are consecutive and we can quickly spot where
778        // skp -> pdf -> png fails.
779        SkTQSort(fSamples.begin(), fSamples.end() ? fSamples.end() - 1 : NULL, compareSampleTitle);
780    }
781
782    fMSAASampleCount = 0;
783
784    SkCommandLineFlags::Parse(argc, argv);
785
786    const char* const commandName = argv[0];
787    char* const* stop = argv + argc;
788    for (++argv; argv < stop; ++argv) {
789        if (strcmp(*argv, "--slide") == 0) {
790            argv++;
791            if (argv < stop && **argv) {
792                fCurrIndex = findByTitle(*argv);
793                if (fCurrIndex < 0) {
794                    fprintf(stderr, "Unknown sample \"%s\"\n", *argv);
795                    listTitles();
796                }
797            }
798        } else if (strcmp(*argv, "--msaa") == 0) {
799            ++argv;
800            if (argv < stop && **argv) {
801                fMSAASampleCount = atoi(*argv);
802            }
803        } else if (strcmp(*argv, "--list") == 0) {
804            listTitles();
805        } else if (strcmp(*argv, "--pictureDir") == 0) {
806            ++argv;  // This case is dealt with in registerPictFileSamples().
807        } else if (strcmp(*argv, "--picture") == 0) {
808            ++argv;  // This case is dealt with in registerPictFileSample().
809        }
810        else {
811            usage(commandName);
812        }
813    }
814
815    if (fCurrIndex < 0) {
816        SkString title;
817        if (readTitleFromPrefs(&title)) {
818            fCurrIndex = findByTitle(title.c_str());
819        }
820    }
821
822    if (fCurrIndex < 0) {
823        fCurrIndex = 0;
824    }
825
826    gSampleWindow = this;
827
828#ifdef  PIPE_FILE
829    //Clear existing file or create file if it doesn't exist
830    FILE* f = fopen(FILE_PATH, "wb");
831    fclose(f);
832#endif
833
834    fDeviceType = kRaster_DeviceType;
835
836#if DEFAULT_TO_GPU
837    fDeviceType = kGPU_DeviceType;
838#endif
839#if SK_ANGLE && DEFAULT_TO_ANGLE
840    fDeviceType = kANGLE_DeviceType;
841#endif
842
843    fUseClip = false;
844    fNClip = false;
845    fAnimating = false;
846    fRotate = false;
847    fRotateAnimTime = 0;
848    fPerspAnim = false;
849    fPerspAnimTime = 0;
850    fRequestGrabImage = false;
851    fPipeState = SkOSMenu::kOffState;
852    fTilingMode = kNo_Tiling;
853    fMeasureFPS = false;
854    fLCDState = SkOSMenu::kMixedState;
855    fAAState = SkOSMenu::kMixedState;
856    fSubpixelState = SkOSMenu::kMixedState;
857    fHintingState = 0;
858    fFilterLevelIndex = 0;
859    fFlipAxis = 0;
860    fScrollTestX = fScrollTestY = 0;
861
862    fMouseX = fMouseY = 0;
863    fFatBitsScale = 8;
864    fTypeface = SkTypeface::CreateFromTypeface(NULL, SkTypeface::kBold);
865    fShowZoomer = false;
866
867    fZoomLevel = 0;
868    fZoomScale = SK_Scalar1;
869
870    fMagnify = false;
871
872    fSaveToPdf = false;
873    fPdfCanvas = NULL;
874
875    fTransitionNext = 6;
876    fTransitionPrev = 2;
877
878    int sinkID = this->getSinkID();
879    fAppMenu = new SkOSMenu;
880    fAppMenu->setTitle("Global Settings");
881    int itemID;
882
883    itemID =fAppMenu->appendList("Device Type", "Device Type", sinkID, 0,
884                                "Raster", "Picture", "OpenGL",
885#if SK_ANGLE
886                                "ANGLE",
887#endif
888                                NULL);
889    fAppMenu->assignKeyEquivalentToItem(itemID, 'd');
890    itemID = fAppMenu->appendTriState("AA", "AA", sinkID, fAAState);
891    fAppMenu->assignKeyEquivalentToItem(itemID, 'b');
892    itemID = fAppMenu->appendTriState("LCD", "LCD", sinkID, fLCDState);
893    fAppMenu->assignKeyEquivalentToItem(itemID, 'l');
894    itemID = fAppMenu->appendList("FilterLevel", "FilterLevel", sinkID, fFilterLevelIndex,
895                                  gFilterLevelStates[0].fName,
896                                  gFilterLevelStates[1].fName,
897                                  gFilterLevelStates[2].fName,
898                                  gFilterLevelStates[3].fName,
899                                  gFilterLevelStates[4].fName,
900                                  NULL);
901    fAppMenu->assignKeyEquivalentToItem(itemID, 'n');
902    itemID = fAppMenu->appendTriState("Subpixel", "Subpixel", sinkID, fSubpixelState);
903    fAppMenu->assignKeyEquivalentToItem(itemID, 's');
904    itemID = fAppMenu->appendList("Hinting", "Hinting", sinkID, fHintingState,
905                                  gHintingStates[0].name,
906                                  gHintingStates[1].name,
907                                  gHintingStates[2].name,
908                                  gHintingStates[3].name,
909                                  gHintingStates[4].name,
910                                  NULL);
911    fAppMenu->assignKeyEquivalentToItem(itemID, 'h');
912
913    fUsePipeMenuItemID = fAppMenu->appendTriState("Pipe", "Pipe" , sinkID,
914                                                  fPipeState);
915    fAppMenu->assignKeyEquivalentToItem(fUsePipeMenuItemID, 'P');
916
917    itemID =fAppMenu->appendList("Tiling", "Tiling", sinkID, fTilingMode,
918                                 gTilingInfo[kNo_Tiling].label,
919                                 gTilingInfo[kAbs_128x128_Tiling].label,
920                                 gTilingInfo[kAbs_256x256_Tiling].label,
921                                 gTilingInfo[kRel_4x4_Tiling].label,
922                                 gTilingInfo[kRel_1x16_Tiling].label,
923                                 gTilingInfo[kRel_16x1_Tiling].label,
924                                 NULL);
925    fAppMenu->assignKeyEquivalentToItem(itemID, 't');
926
927    itemID = fAppMenu->appendSwitch("Slide Show", "Slide Show" , sinkID, false);
928    fAppMenu->assignKeyEquivalentToItem(itemID, 'a');
929    itemID = fAppMenu->appendSwitch("Clip", "Clip" , sinkID, fUseClip);
930    fAppMenu->assignKeyEquivalentToItem(itemID, 'c');
931    itemID = fAppMenu->appendSwitch("Flip X", "Flip X" , sinkID, false);
932    fAppMenu->assignKeyEquivalentToItem(itemID, 'x');
933    itemID = fAppMenu->appendSwitch("Flip Y", "Flip Y" , sinkID, false);
934    fAppMenu->assignKeyEquivalentToItem(itemID, 'y');
935    itemID = fAppMenu->appendSwitch("Zoomer", "Zoomer" , sinkID, fShowZoomer);
936    fAppMenu->assignKeyEquivalentToItem(itemID, 'z');
937    itemID = fAppMenu->appendSwitch("Magnify", "Magnify" , sinkID, fMagnify);
938    fAppMenu->assignKeyEquivalentToItem(itemID, 'm');
939    itemID =fAppMenu->appendList("Transition-Next", "Transition-Next", sinkID,
940                                fTransitionNext, "Up", "Up and Right", "Right",
941                                "Down and Right", "Down", "Down and Left",
942                                "Left", "Up and Left", NULL);
943    fAppMenu->assignKeyEquivalentToItem(itemID, 'j');
944    itemID =fAppMenu->appendList("Transition-Prev", "Transition-Prev", sinkID,
945                                fTransitionPrev, "Up", "Up and Right", "Right",
946                                "Down and Right", "Down", "Down and Left",
947                                "Left", "Up and Left", NULL);
948    fAppMenu->assignKeyEquivalentToItem(itemID, 'k');
949    itemID = fAppMenu->appendAction("Save to PDF", sinkID);
950    fAppMenu->assignKeyEquivalentToItem(itemID, 'e');
951
952    this->addMenu(fAppMenu);
953    fSlideMenu = new SkOSMenu;
954    this->addMenu(fSlideMenu);
955
956    this->setColorType(kN32_SkColorType);
957    this->setVisibleP(true);
958    this->setClipToBounds(false);
959
960    this->loadView((*fSamples[fCurrIndex])());
961
962    fPDFData = NULL;
963
964    if (NULL == devManager) {
965        fDevManager = new DefaultDeviceManager();
966    } else {
967        devManager->ref();
968        fDevManager = devManager;
969    }
970    fDevManager->setUpBackend(this, fMSAASampleCount);
971
972    // If another constructor set our dimensions, ensure that our
973    // onSizeChange gets called.
974    if (this->height() && this->width()) {
975        this->onSizeChange();
976    }
977
978    // can't call this synchronously, since it may require a subclass to
979    // to implement, or the caller may need us to have returned from the
980    // constructor first. Hence we post an event to ourselves.
981//    this->updateTitle();
982    post_event_to_sink(new SkEvent(gUpdateWindowTitleEvtName), this);
983}
984
985SampleWindow::~SampleWindow() {
986    delete fPdfCanvas;
987    fTypeface->unref();
988
989    SkSafeUnref(fDevManager);
990}
991
992static void make_filepath(SkString* path, const char* dir, const SkString& name) {
993    size_t len = strlen(dir);
994    path->set(dir);
995    if (len > 0 && dir[len - 1] != '/') {
996        path->append("/");
997    }
998    path->append(name);
999}
1000
1001void SampleWindow::registerPictFileSample(char** argv, int argc) {
1002    const char* pict = NULL;
1003
1004    for (int i = 0; i < argc; ++i) {
1005        if (!strcmp(argv[i], "--picture")) {
1006            i += 1;
1007            if (i < argc) {
1008                pict = argv[i];
1009                break;
1010            }
1011        }
1012    }
1013    if (pict) {
1014        SkString path(pict);
1015        fCurrIndex = fSamples.count();
1016        *fSamples.append() = new PictFileFactory(path);
1017    }
1018}
1019
1020void SampleWindow::registerPictFileSamples(char** argv, int argc) {
1021    const char* pictDir = NULL;
1022
1023    for (int i = 0; i < argc; ++i) {
1024        if (!strcmp(argv[i], "--pictureDir")) {
1025            i += 1;
1026            if (i < argc) {
1027                pictDir = argv[i];
1028                break;
1029            }
1030        }
1031    }
1032    if (pictDir) {
1033        SkOSFile::Iter iter(pictDir, "skp");
1034        SkString filename;
1035        while (iter.next(&filename)) {
1036            SkString path;
1037            make_filepath(&path, pictDir, filename);
1038            *fSamples.append() = new PictFileFactory(path);
1039        }
1040    }
1041}
1042
1043#ifdef SAMPLE_PDF_FILE_VIEWER
1044void SampleWindow::registerPdfFileViewerSamples(char** argv, int argc) {
1045    const char* pdfDir = NULL;
1046
1047    for (int i = 0; i < argc; ++i) {
1048        if (!strcmp(argv[i], "--pdfDir")) {
1049            i += 1;
1050            if (i < argc) {
1051                pdfDir = argv[i];
1052                break;
1053            }
1054        }
1055    }
1056    if (pdfDir) {
1057        SkOSFile::Iter iter(pdfDir, "pdf");
1058        SkString filename;
1059        while (iter.next(&filename)) {
1060            SkString path;
1061            make_filepath(&path, pdfDir, filename);
1062            *fSamples.append() = new PdfFileViewerFactory(path);
1063        }
1064    }
1065}
1066#endif  // SAMPLE_PDF_FILE_VIEWER
1067
1068
1069int SampleWindow::findByTitle(const char title[]) {
1070    int i, count = fSamples.count();
1071    for (i = 0; i < count; i++) {
1072        if (getSampleTitle(i).equals(title)) {
1073            return i;
1074        }
1075    }
1076    return -1;
1077}
1078
1079void SampleWindow::listTitles() {
1080    int count = fSamples.count();
1081    SkDebugf("All Slides:\n");
1082    for (int i = 0; i < count; i++) {
1083        SkDebugf("    %s\n", getSampleTitle(i).c_str());
1084    }
1085}
1086
1087static SkBitmap capture_bitmap(SkCanvas* canvas) {
1088    SkBitmap bm;
1089    if (bm.allocPixels(canvas->imageInfo())) {
1090        canvas->readPixels(&bm, 0, 0);
1091    }
1092    return bm;
1093}
1094
1095static bool bitmap_diff(SkCanvas* canvas, const SkBitmap& orig,
1096                        SkBitmap* diff) {
1097    const SkBitmap& src = canvas->getDevice()->accessBitmap(false);
1098
1099    SkAutoLockPixels alp0(src);
1100    SkAutoLockPixels alp1(orig);
1101    for (int y = 0; y < src.height(); y++) {
1102        const void* srcP = src.getAddr(0, y);
1103        const void* origP = orig.getAddr(0, y);
1104        size_t bytes = src.width() * src.bytesPerPixel();
1105        if (memcmp(srcP, origP, bytes)) {
1106            SkDebugf("---------- difference on line %d\n", y);
1107            return true;
1108        }
1109    }
1110    return false;
1111}
1112
1113static void drawText(SkCanvas* canvas, SkString string, SkScalar left, SkScalar top, SkPaint& paint)
1114{
1115    SkColor desiredColor = paint.getColor();
1116    paint.setColor(SK_ColorWHITE);
1117    const char* c_str = string.c_str();
1118    size_t size = string.size();
1119    SkRect bounds;
1120    paint.measureText(c_str, size, &bounds);
1121    bounds.offset(left, top);
1122    SkScalar inset = SkIntToScalar(-2);
1123    bounds.inset(inset, inset);
1124    canvas->drawRect(bounds, paint);
1125    if (desiredColor != SK_ColorBLACK) {
1126        paint.setColor(SK_ColorBLACK);
1127        canvas->drawText(c_str, size, left + SK_Scalar1, top + SK_Scalar1, paint);
1128    }
1129    paint.setColor(desiredColor);
1130    canvas->drawText(c_str, size, left, top, paint);
1131}
1132
1133#define XCLIP_N  8
1134#define YCLIP_N  8
1135
1136void SampleWindow::draw(SkCanvas* canvas) {
1137    // update the animation time
1138    if (!gAnimTimePrev && !gAnimTime) {
1139        // first time make delta be 0
1140        gAnimTime = SkTime::GetMSecs();
1141        gAnimTimePrev = gAnimTime;
1142    } else {
1143        gAnimTimePrev = gAnimTime;
1144        gAnimTime = SkTime::GetMSecs();
1145    }
1146
1147    if (fGesture.isActive()) {
1148        this->updateMatrix();
1149    }
1150
1151    if (fMeasureFPS) {
1152        fMeasureFPS_Time = 0;
1153    }
1154
1155    if (fNClip) {
1156        this->INHERITED::draw(canvas);
1157        SkBitmap orig = capture_bitmap(canvas);
1158
1159        const SkScalar w = this->width();
1160        const SkScalar h = this->height();
1161        const SkScalar cw = w / XCLIP_N;
1162        const SkScalar ch = h / YCLIP_N;
1163        for (int y = 0; y < YCLIP_N; y++) {
1164            SkRect r;
1165            r.fTop = y * ch;
1166            r.fBottom = (y + 1) * ch;
1167            if (y == YCLIP_N - 1) {
1168                r.fBottom = h;
1169            }
1170            for (int x = 0; x < XCLIP_N; x++) {
1171                SkAutoCanvasRestore acr(canvas, true);
1172                r.fLeft = x * cw;
1173                r.fRight = (x + 1) * cw;
1174                if (x == XCLIP_N - 1) {
1175                    r.fRight = w;
1176                }
1177                canvas->clipRect(r);
1178                this->INHERITED::draw(canvas);
1179            }
1180        }
1181
1182        SkBitmap diff;
1183        if (bitmap_diff(canvas, orig, &diff)) {
1184        }
1185    } else {
1186        SkSize tile = this->tileSize();
1187
1188        if (kNo_Tiling == fTilingMode) {
1189            this->INHERITED::draw(canvas); // no looping or surfaces needed
1190        } else {
1191            const int w = SkScalarRoundToInt(tile.width());
1192            const int h = SkScalarRoundToInt(tile.height());
1193            SkImageInfo info = SkImageInfo::MakeN32Premul(w, h);
1194            SkAutoTUnref<SkSurface> surface(canvas->newSurface(info));
1195            SkCanvas* tileCanvas = surface->getCanvas();
1196
1197            for (SkScalar y = 0; y < height(); y += tile.height()) {
1198                for (SkScalar x = 0; x < width(); x += tile.width()) {
1199                    SkAutoCanvasRestore acr(tileCanvas, true);
1200                    tileCanvas->translate(-x, -y);
1201                    tileCanvas->clear(0);
1202                    this->INHERITED::draw(tileCanvas);
1203                    surface->draw(canvas, x, y, NULL);
1204                }
1205            }
1206
1207            // for drawing the borders between tiles
1208            SkPaint paint;
1209            paint.setColor(0x60FF00FF);
1210            paint.setStyle(SkPaint::kStroke_Style);
1211
1212            for (SkScalar y = 0; y < height(); y += tile.height()) {
1213                for (SkScalar x = 0; x < width(); x += tile.width()) {
1214                    canvas->drawRect(SkRect::MakeXYWH(x, y, tile.width(), tile.height()), paint);
1215                }
1216            }
1217        }
1218    }
1219    if (fShowZoomer && !fSaveToPdf) {
1220        showZoomer(canvas);
1221    }
1222    if (fMagnify && !fSaveToPdf) {
1223        magnify(canvas);
1224    }
1225
1226    if (fMeasureFPS && fMeasureFPS_Time) {
1227        this->updateTitle();
1228        this->postInvalDelay();
1229    }
1230
1231    // do this last
1232    fDevManager->publishCanvas(fDeviceType, canvas, this);
1233}
1234
1235static float clipW = 200;
1236static float clipH = 200;
1237void SampleWindow::magnify(SkCanvas* canvas) {
1238    SkRect r;
1239    int count = canvas->save();
1240
1241    SkMatrix m = canvas->getTotalMatrix();
1242    if (!m.invert(&m)) {
1243        return;
1244    }
1245    SkPoint offset, center;
1246    SkScalar mouseX = fMouseX * SK_Scalar1;
1247    SkScalar mouseY = fMouseY * SK_Scalar1;
1248    m.mapXY(mouseX - clipW/2, mouseY - clipH/2, &offset);
1249    m.mapXY(mouseX, mouseY, &center);
1250
1251    r.set(0, 0, clipW * m.getScaleX(), clipH * m.getScaleX());
1252    r.offset(offset.fX, offset.fY);
1253
1254    SkPaint paint;
1255    paint.setColor(0xFF66AAEE);
1256    paint.setStyle(SkPaint::kStroke_Style);
1257    paint.setStrokeWidth(10.f * m.getScaleX());
1258    //lense offset
1259    //canvas->translate(0, -250);
1260    canvas->drawRect(r, paint);
1261    canvas->clipRect(r);
1262
1263    m = canvas->getTotalMatrix();
1264    m.setTranslate(-center.fX, -center.fY);
1265    m.postScale(0.5f * fFatBitsScale, 0.5f * fFatBitsScale);
1266    m.postTranslate(center.fX, center.fY);
1267    canvas->concat(m);
1268
1269    this->INHERITED::draw(canvas);
1270
1271    canvas->restoreToCount(count);
1272}
1273
1274void SampleWindow::showZoomer(SkCanvas* canvas) {
1275        int count = canvas->save();
1276        canvas->resetMatrix();
1277        // Ensure the mouse position is on screen.
1278        int width = SkScalarRoundToInt(this->width());
1279        int height = SkScalarRoundToInt(this->height());
1280        if (fMouseX >= width) fMouseX = width - 1;
1281        else if (fMouseX < 0) fMouseX = 0;
1282        if (fMouseY >= height) fMouseY = height - 1;
1283        else if (fMouseY < 0) fMouseY = 0;
1284
1285        SkBitmap bitmap = capture_bitmap(canvas);
1286        bitmap.lockPixels();
1287
1288        // Find the size of the zoomed in view, forced to be odd, so the examined pixel is in the middle.
1289        int zoomedWidth = (width >> 1) | 1;
1290        int zoomedHeight = (height >> 1) | 1;
1291        SkIRect src;
1292        src.set(0, 0, zoomedWidth / fFatBitsScale, zoomedHeight / fFatBitsScale);
1293        src.offset(fMouseX - (src.width()>>1), fMouseY - (src.height()>>1));
1294        SkRect dest;
1295        dest.set(0, 0, SkIntToScalar(zoomedWidth), SkIntToScalar(zoomedHeight));
1296        dest.offset(SkIntToScalar(width - zoomedWidth), SkIntToScalar(height - zoomedHeight));
1297        SkPaint paint;
1298        // Clear the background behind our zoomed in view
1299        paint.setColor(SK_ColorWHITE);
1300        canvas->drawRect(dest, paint);
1301        canvas->drawBitmapRect(bitmap, &src, dest);
1302        paint.setColor(SK_ColorBLACK);
1303        paint.setStyle(SkPaint::kStroke_Style);
1304        // Draw a border around the pixel in the middle
1305        SkRect originalPixel;
1306        originalPixel.set(SkIntToScalar(fMouseX), SkIntToScalar(fMouseY), SkIntToScalar(fMouseX + 1), SkIntToScalar(fMouseY + 1));
1307        SkMatrix matrix;
1308        SkRect scalarSrc;
1309        scalarSrc.set(src);
1310        SkColor color = bitmap.getColor(fMouseX, fMouseY);
1311        if (matrix.setRectToRect(scalarSrc, dest, SkMatrix::kFill_ScaleToFit)) {
1312            SkRect pixel;
1313            matrix.mapRect(&pixel, originalPixel);
1314            // TODO Perhaps measure the values and make the outline white if it's "dark"
1315            if (color == SK_ColorBLACK) {
1316                paint.setColor(SK_ColorWHITE);
1317            }
1318            canvas->drawRect(pixel, paint);
1319        }
1320        paint.setColor(SK_ColorBLACK);
1321        // Draw a border around the destination rectangle
1322        canvas->drawRect(dest, paint);
1323        paint.setStyle(SkPaint::kStrokeAndFill_Style);
1324        // Identify the pixel and its color on screen
1325        paint.setTypeface(fTypeface);
1326        paint.setAntiAlias(true);
1327        SkScalar lineHeight = paint.getFontMetrics(NULL);
1328        SkString string;
1329        string.appendf("(%i, %i)", fMouseX, fMouseY);
1330        SkScalar left = dest.fLeft + SkIntToScalar(3);
1331        SkScalar i = SK_Scalar1;
1332        drawText(canvas, string, left, SkScalarMulAdd(lineHeight, i, dest.fTop), paint);
1333        // Alpha
1334        i += SK_Scalar1;
1335        string.reset();
1336        string.appendf("A: %X", SkColorGetA(color));
1337        drawText(canvas, string, left, SkScalarMulAdd(lineHeight, i, dest.fTop), paint);
1338        // Red
1339        i += SK_Scalar1;
1340        string.reset();
1341        string.appendf("R: %X", SkColorGetR(color));
1342        paint.setColor(SK_ColorRED);
1343        drawText(canvas, string, left, SkScalarMulAdd(lineHeight, i, dest.fTop), paint);
1344        // Green
1345        i += SK_Scalar1;
1346        string.reset();
1347        string.appendf("G: %X", SkColorGetG(color));
1348        paint.setColor(SK_ColorGREEN);
1349        drawText(canvas, string, left, SkScalarMulAdd(lineHeight, i, dest.fTop), paint);
1350        // Blue
1351        i += SK_Scalar1;
1352        string.reset();
1353        string.appendf("B: %X", SkColorGetB(color));
1354        paint.setColor(SK_ColorBLUE);
1355        drawText(canvas, string, left, SkScalarMulAdd(lineHeight, i, dest.fTop), paint);
1356        canvas->restoreToCount(count);
1357}
1358
1359void SampleWindow::onDraw(SkCanvas* canvas) {
1360}
1361
1362#include "SkColorPriv.h"
1363
1364void SampleWindow::saveToPdf()
1365{
1366    fSaveToPdf = true;
1367    this->inval(NULL);
1368}
1369
1370SkCanvas* SampleWindow::beforeChildren(SkCanvas* canvas) {
1371    if (fSaveToPdf) {
1372        const SkBitmap& bmp = canvas->getDevice()->accessBitmap(false);
1373        SkISize size = SkISize::Make(bmp.width(), bmp.height());
1374        SkPDFDevice* pdfDevice = new SkPDFDevice(size, size,
1375                canvas->getTotalMatrix());
1376        fPdfCanvas = new SkCanvas(pdfDevice);
1377        pdfDevice->unref();
1378        canvas = fPdfCanvas;
1379    } else if (kPicture_DeviceType == fDeviceType) {
1380        canvas = fRecorder.beginRecording(9999, 9999, NULL, 0);
1381    } else {
1382#if SK_SUPPORT_GPU
1383        if (kNullGPU_DeviceType != fDeviceType)
1384#endif
1385        {
1386            canvas = this->INHERITED::beforeChildren(canvas);
1387        }
1388    }
1389
1390    if (fUseClip) {
1391        canvas->drawColor(0xFFFF88FF);
1392        canvas->clipPath(fClipPath, SkRegion::kIntersect_Op, true);
1393    }
1394
1395    return canvas;
1396}
1397
1398static void paint_rgn(const SkBitmap& bm, const SkIRect& r,
1399                      const SkRegion& rgn) {
1400    SkCanvas    canvas(bm);
1401    SkRegion    inval(rgn);
1402
1403    inval.translate(r.fLeft, r.fTop);
1404    canvas.clipRegion(inval);
1405    canvas.drawColor(0xFFFF8080);
1406}
1407#include "SkData.h"
1408void SampleWindow::afterChildren(SkCanvas* orig) {
1409    if (fSaveToPdf) {
1410        fSaveToPdf = false;
1411        if (fShowZoomer) {
1412            showZoomer(fPdfCanvas);
1413        }
1414        SkString name;
1415        name.printf("%s.pdf", this->getTitle());
1416        SkPDFDocument doc;
1417        SkPDFDevice* device = static_cast<SkPDFDevice*>(fPdfCanvas->getDevice());
1418        doc.appendPage(device);
1419#ifdef SK_BUILD_FOR_ANDROID
1420        name.prepend("/sdcard/");
1421#endif
1422
1423#ifdef SK_BUILD_FOR_IOS
1424        SkDynamicMemoryWStream mstream;
1425        doc.emitPDF(&mstream);
1426        fPDFData = mstream.copyToData();
1427#endif
1428        SkFILEWStream stream(name.c_str());
1429        if (stream.isValid()) {
1430            doc.emitPDF(&stream);
1431            const char* desc = "File saved from Skia SampleApp";
1432            this->onPDFSaved(this->getTitle(), desc, name.c_str());
1433        }
1434
1435        delete fPdfCanvas;
1436        fPdfCanvas = NULL;
1437
1438        // We took over the draw calls in order to create the PDF, so we need
1439        // to redraw.
1440        this->inval(NULL);
1441        return;
1442    }
1443
1444    if (fRequestGrabImage) {
1445        fRequestGrabImage = false;
1446
1447        SkBaseDevice* device = orig->getDevice();
1448        SkBitmap bmp;
1449        if (device->accessBitmap(false).copyTo(&bmp, kN32_SkColorType)) {
1450            static int gSampleGrabCounter;
1451            SkString name;
1452            name.printf("sample_grab_%d.png", gSampleGrabCounter++);
1453            SkImageEncoder::EncodeFile(name.c_str(), bmp,
1454                                       SkImageEncoder::kPNG_Type, 100);
1455        }
1456    }
1457
1458    if (kPicture_DeviceType == fDeviceType) {
1459        SkAutoTUnref<SkPicture> picture(fRecorder.endRecording());
1460
1461        if (true) {
1462            SkPicture* pict = new SkPicture(*picture);
1463            this->installDrawFilter(orig);
1464            orig->drawPicture(pict);
1465            pict->unref();
1466        } else if (true) {
1467            SkDynamicMemoryWStream ostream;
1468            picture->serialize(&ostream);
1469
1470            SkAutoDataUnref data(ostream.copyToData());
1471            SkMemoryStream istream(data->data(), data->size());
1472            SkAutoTUnref<SkPicture> pict(SkPicture::CreateFromStream(&istream));
1473            if (pict.get() != NULL) {
1474                orig->drawPicture(pict.get());
1475            }
1476        } else {
1477            picture->draw(orig);
1478        }
1479    }
1480
1481    // Do this after presentGL and other finishing, rather than in afterChild
1482    if (fMeasureFPS && fMeasureFPS_StartTime) {
1483        fMeasureFPS_Time += SkTime::GetMSecs() - fMeasureFPS_StartTime;
1484    }
1485
1486    //    if ((fScrollTestX | fScrollTestY) != 0)
1487    if (false) {
1488        const SkBitmap& bm = orig->getDevice()->accessBitmap(true);
1489        int dx = fScrollTestX * 7;
1490        int dy = fScrollTestY * 7;
1491        SkIRect r;
1492        SkRegion inval;
1493
1494        r.set(50, 50, 50+100, 50+100);
1495        bm.scrollRect(&r, dx, dy, &inval);
1496        paint_rgn(bm, r, inval);
1497    }
1498}
1499
1500void SampleWindow::beforeChild(SkView* child, SkCanvas* canvas) {
1501    if (fRotate) {
1502        fRotateAnimTime += SampleCode::GetAnimSecondsDelta();
1503
1504        SkScalar cx = this->width() / 2;
1505        SkScalar cy = this->height() / 2;
1506        canvas->translate(cx, cy);
1507        canvas->rotate(fRotateAnimTime * 10);
1508        canvas->translate(-cx, -cy);
1509    }
1510
1511    if (fPerspAnim) {
1512        fPerspAnimTime += SampleCode::GetAnimSecondsDelta();
1513
1514        static const SkScalar gAnimPeriod = 10 * SK_Scalar1;
1515        static const SkScalar gAnimMag = SK_Scalar1 / 1000;
1516        SkScalar t = SkScalarMod(fPerspAnimTime, gAnimPeriod);
1517        if (SkScalarFloorToInt(SkScalarDiv(fPerspAnimTime, gAnimPeriod)) & 0x1) {
1518            t = gAnimPeriod - t;
1519        }
1520        t = 2 * t - gAnimPeriod;
1521        t = SkScalarMul(SkScalarDiv(t, gAnimPeriod), gAnimMag);
1522        SkMatrix m;
1523        m.reset();
1524        m.setPerspY(t);
1525        canvas->concat(m);
1526    }
1527
1528    this->installDrawFilter(canvas);
1529
1530    if (fMeasureFPS) {
1531        if (SampleView::SetRepeatDraw(child, FPS_REPEAT_COUNT)) {
1532            fMeasureFPS_StartTime = SkTime::GetMSecs();
1533        }
1534    } else {
1535        (void)SampleView::SetRepeatDraw(child, 1);
1536    }
1537    if (fPerspAnim || fRotate) {
1538        this->inval(NULL);
1539    }
1540}
1541
1542void SampleWindow::afterChild(SkView* child, SkCanvas* canvas) {
1543    canvas->setDrawFilter(NULL);
1544}
1545
1546static SkColorType gColorTypeCycle[] = {
1547    kUnknown_SkColorType,           // none -> none
1548    kUnknown_SkColorType,           // a8 -> none
1549    kN32_SkColorType,               // 565 -> 8888
1550    kN32_SkColorType,               // 4444 -> 8888
1551    kRGB_565_SkColorType,           // 8888 -> 565
1552    kRGB_565_SkColorType,           // 8888 -> 565
1553    kUnknown_SkColorType,           // index8 -> none
1554};
1555
1556static SkColorType cycle_colortypes(SkColorType c) {
1557    return gColorTypeCycle[c];
1558}
1559
1560void SampleWindow::changeZoomLevel(float delta) {
1561    fZoomLevel += delta;
1562    if (fZoomLevel > 0) {
1563        fZoomLevel = SkMinScalar(fZoomLevel, MAX_ZOOM_LEVEL);
1564        fZoomScale = fZoomLevel + SK_Scalar1;
1565    } else if (fZoomLevel < 0) {
1566        fZoomLevel = SkMaxScalar(fZoomLevel, MIN_ZOOM_LEVEL);
1567        fZoomScale = SK_Scalar1 / (SK_Scalar1 - fZoomLevel);
1568    } else {
1569        fZoomScale = SK_Scalar1;
1570    }
1571    this->updateMatrix();
1572}
1573
1574void SampleWindow::updateMatrix(){
1575    SkMatrix m;
1576    m.reset();
1577    if (fZoomLevel) {
1578        SkPoint center;
1579        //m = this->getLocalMatrix();//.invert(&m);
1580        m.mapXY(fZoomCenterX, fZoomCenterY, &center);
1581        SkScalar cx = center.fX;
1582        SkScalar cy = center.fY;
1583
1584        m.setTranslate(-cx, -cy);
1585        m.postScale(fZoomScale, fZoomScale);
1586        m.postTranslate(cx, cy);
1587    }
1588
1589    if (fFlipAxis) {
1590        m.preTranslate(fZoomCenterX, fZoomCenterY);
1591        if (fFlipAxis & kFlipAxis_X) {
1592            m.preScale(-SK_Scalar1, SK_Scalar1);
1593        }
1594        if (fFlipAxis & kFlipAxis_Y) {
1595            m.preScale(SK_Scalar1, -SK_Scalar1);
1596        }
1597        m.preTranslate(-fZoomCenterX, -fZoomCenterY);
1598        //canvas->concat(m);
1599    }
1600    // Apply any gesture matrix
1601    m.preConcat(fGesture.localM());
1602    m.preConcat(fGesture.globalM());
1603
1604    this->setLocalMatrix(m);
1605
1606    this->updateTitle();
1607    this->inval(NULL);
1608}
1609bool SampleWindow::previousSample() {
1610    fCurrIndex = (fCurrIndex - 1 + fSamples.count()) % fSamples.count();
1611    this->loadView(create_transition(curr_view(this), (*fSamples[fCurrIndex])(),
1612                                     fTransitionPrev));
1613    return true;
1614}
1615
1616bool SampleWindow::nextSample() {
1617    fCurrIndex = (fCurrIndex + 1) % fSamples.count();
1618    this->loadView(create_transition(curr_view(this), (*fSamples[fCurrIndex])(),
1619                                     fTransitionNext));
1620    return true;
1621}
1622
1623bool SampleWindow::goToSample(int i) {
1624    fCurrIndex = (i) % fSamples.count();
1625    this->loadView(create_transition(curr_view(this),(*fSamples[fCurrIndex])(), 6));
1626    return true;
1627}
1628
1629SkString SampleWindow::getSampleTitle(int i) {
1630    return ::getSampleTitle(fSamples[i]);
1631}
1632
1633int SampleWindow::sampleCount() {
1634    return fSamples.count();
1635}
1636
1637void SampleWindow::showOverview() {
1638    this->loadView(create_transition(curr_view(this),
1639                                     create_overview(fSamples.count(), fSamples.begin()),
1640                                     4));
1641}
1642
1643void SampleWindow::installDrawFilter(SkCanvas* canvas) {
1644    canvas->setDrawFilter(new FlagsDrawFilter(fLCDState, fAAState, fSubpixelState,
1645                                              fHintingState, fFilterLevelIndex))->unref();
1646}
1647
1648void SampleWindow::postAnimatingEvent() {
1649    if (fAnimating) {
1650        (new SkEvent(ANIMATING_EVENTTYPE, this->getSinkID()))->postDelay(ANIMATING_DELAY);
1651    }
1652}
1653
1654bool SampleWindow::onEvent(const SkEvent& evt) {
1655    if (evt.isType(gUpdateWindowTitleEvtName)) {
1656        this->updateTitle();
1657        return true;
1658    }
1659    if (evt.isType(ANIMATING_EVENTTYPE)) {
1660        if (fAnimating) {
1661            this->nextSample();
1662            this->postAnimatingEvent();
1663        }
1664        return true;
1665    }
1666    if (evt.isType("replace-transition-view")) {
1667        this->loadView((SkView*)SkEventSink::FindSink(evt.getFast32()));
1668        return true;
1669    }
1670    if (evt.isType("set-curr-index")) {
1671        this->goToSample(evt.getFast32());
1672        return true;
1673    }
1674    if (isInvalEvent(evt)) {
1675        this->inval(NULL);
1676        return true;
1677    }
1678    int selected = -1;
1679    if (SkOSMenu::FindListIndex(evt, "Device Type", &selected)) {
1680        this->setDeviceType((DeviceType)selected);
1681        return true;
1682    }
1683    if (SkOSMenu::FindTriState(evt, "Pipe", &fPipeState)) {
1684#ifdef PIPE_NET
1685        if (!fPipeState != SkOSMenu::kOnState)
1686            gServer.disconnectAll();
1687#endif
1688        (void)SampleView::SetUsePipe(curr_view(this), fPipeState);
1689        this->updateTitle();
1690        this->inval(NULL);
1691        return true;
1692    }
1693    if (SkOSMenu::FindSwitchState(evt, "Slide Show", NULL)) {
1694        this->toggleSlideshow();
1695        return true;
1696    }
1697    if (SkOSMenu::FindTriState(evt, "AA", &fAAState) ||
1698        SkOSMenu::FindTriState(evt, "LCD", &fLCDState) ||
1699        SkOSMenu::FindListIndex(evt, "FilterLevel", &fFilterLevelIndex) ||
1700        SkOSMenu::FindTriState(evt, "Subpixel", &fSubpixelState) ||
1701        SkOSMenu::FindListIndex(evt, "Hinting", &fHintingState) ||
1702        SkOSMenu::FindSwitchState(evt, "Clip", &fUseClip) ||
1703        SkOSMenu::FindSwitchState(evt, "Zoomer", &fShowZoomer) ||
1704        SkOSMenu::FindSwitchState(evt, "Magnify", &fMagnify) ||
1705        SkOSMenu::FindListIndex(evt, "Transition-Next", &fTransitionNext) ||
1706        SkOSMenu::FindListIndex(evt, "Transition-Prev", &fTransitionPrev)) {
1707        this->inval(NULL);
1708        this->updateTitle();
1709        return true;
1710    }
1711    if (SkOSMenu::FindListIndex(evt, "Tiling", &fTilingMode)) {
1712        if (SampleView::IsSampleView(curr_view(this))) {
1713            ((SampleView*)curr_view(this))->onTileSizeChanged(this->tileSize());
1714        }
1715        this->inval(NULL);
1716        this->updateTitle();
1717        return true;
1718    }
1719    if (SkOSMenu::FindSwitchState(evt, "Flip X", NULL)) {
1720        fFlipAxis ^= kFlipAxis_X;
1721        this->updateMatrix();
1722        return true;
1723    }
1724    if (SkOSMenu::FindSwitchState(evt, "Flip Y", NULL)) {
1725        fFlipAxis ^= kFlipAxis_Y;
1726        this->updateMatrix();
1727        return true;
1728    }
1729    if (SkOSMenu::FindAction(evt,"Save to PDF")) {
1730        this->saveToPdf();
1731        return true;
1732    }
1733    return this->INHERITED::onEvent(evt);
1734}
1735
1736bool SampleWindow::onQuery(SkEvent* query) {
1737    if (query->isType("get-slide-count")) {
1738        query->setFast32(fSamples.count());
1739        return true;
1740    }
1741    if (query->isType("get-slide-title")) {
1742        SkView* view = (*fSamples[query->getFast32()])();
1743        SkEvent evt(gTitleEvtName);
1744        if (view->doQuery(&evt)) {
1745            query->setString("title", evt.findString(gTitleEvtName));
1746        }
1747        SkSafeUnref(view);
1748        return true;
1749    }
1750    if (query->isType("use-fast-text")) {
1751        SkEvent evt(gFastTextEvtName);
1752        return curr_view(this)->doQuery(&evt);
1753    }
1754    if (query->isType("ignore-window-bitmap")) {
1755        query->setFast32(this->getGrContext() != NULL);
1756        return true;
1757    }
1758    return this->INHERITED::onQuery(query);
1759}
1760
1761#if 0 // UNUSED
1762static void cleanup_for_filename(SkString* name) {
1763    char* str = name->writable_str();
1764    for (size_t i = 0; i < name->size(); i++) {
1765        switch (str[i]) {
1766            case ':': str[i] = '-'; break;
1767            case '/': str[i] = '-'; break;
1768            case ' ': str[i] = '_'; break;
1769            default: break;
1770        }
1771    }
1772}
1773#endif
1774
1775bool SampleWindow::onHandleChar(SkUnichar uni) {
1776    {
1777        SkView* view = curr_view(this);
1778        if (view) {
1779            SkEvent evt(gCharEvtName);
1780            evt.setFast32(uni);
1781            if (view->doQuery(&evt)) {
1782                return true;
1783            }
1784        }
1785    }
1786
1787    int dx = 0xFF;
1788    int dy = 0xFF;
1789
1790    switch (uni) {
1791        case '5': dx =  0; dy =  0; break;
1792        case '8': dx =  0; dy = -1; break;
1793        case '6': dx =  1; dy =  0; break;
1794        case '2': dx =  0; dy =  1; break;
1795        case '4': dx = -1; dy =  0; break;
1796        case '7': dx = -1; dy = -1; break;
1797        case '9': dx =  1; dy = -1; break;
1798        case '3': dx =  1; dy =  1; break;
1799        case '1': dx = -1; dy =  1; break;
1800
1801        default:
1802            break;
1803    }
1804
1805    if (0xFF != dx && 0xFF != dy) {
1806        if ((dx | dy) == 0) {
1807            fScrollTestX = fScrollTestY = 0;
1808        } else {
1809            fScrollTestX += dx;
1810            fScrollTestY += dy;
1811        }
1812        this->inval(NULL);
1813        return true;
1814    }
1815
1816    switch (uni) {
1817        case 'B':
1818            post_event_to_sink(SkNEW_ARGS(SkEvent, ("PictFileView::toggleBBox")), curr_view(this));
1819            // Cannot call updateTitle() synchronously, because the toggleBBox event is still in
1820            // the queue.
1821            post_event_to_sink(SkNEW_ARGS(SkEvent, (gUpdateWindowTitleEvtName)), this);
1822            this->inval(NULL);
1823            break;
1824        case 'f':
1825            // only
1826            toggleFPS();
1827            break;
1828        case 'g':
1829            fRequestGrabImage = true;
1830            this->inval(NULL);
1831            break;
1832        case 'G':
1833            gShowGMBounds = !gShowGMBounds;
1834            post_event_to_sink(GMSampleView::NewShowSizeEvt(gShowGMBounds),
1835                            curr_view(this));
1836            this->inval(NULL);
1837            break;
1838        case 'i':
1839            this->zoomIn();
1840            break;
1841        case 'o':
1842            this->zoomOut();
1843            break;
1844        case 'r':
1845            fRotate = !fRotate;
1846            fRotateAnimTime = 0;
1847            this->inval(NULL);
1848            this->updateTitle();
1849            return true;
1850        case 'k':
1851            fPerspAnim = !fPerspAnim;
1852            this->inval(NULL);
1853            this->updateTitle();
1854            return true;
1855#if SK_SUPPORT_GPU
1856        case '\\':
1857            this->setDeviceType(kNullGPU_DeviceType);
1858            this->inval(NULL);
1859            this->updateTitle();
1860            return true;
1861        case 'p':
1862            {
1863                GrContext* grContext = this->getGrContext();
1864                if (grContext) {
1865                    size_t cacheBytes;
1866                    grContext->getResourceCacheUsage(NULL, &cacheBytes);
1867                    grContext->freeGpuResources();
1868                    SkDebugf("Purged %d bytes from the GPU resource cache.\n", cacheBytes);
1869                }
1870            }
1871            return true;
1872#endif
1873        default:
1874            break;
1875    }
1876
1877    if (fAppMenu->handleKeyEquivalent(uni)|| fSlideMenu->handleKeyEquivalent(uni)) {
1878        this->onUpdateMenu(fAppMenu);
1879        this->onUpdateMenu(fSlideMenu);
1880        return true;
1881    }
1882    return this->INHERITED::onHandleChar(uni);
1883}
1884
1885void SampleWindow::setDeviceType(DeviceType type) {
1886    if (type == fDeviceType)
1887        return;
1888
1889    fDevManager->tearDownBackend(this);
1890
1891    fDeviceType = type;
1892
1893    fDevManager->setUpBackend(this, fMSAASampleCount);
1894
1895    this->updateTitle();
1896    this->inval(NULL);
1897}
1898
1899void SampleWindow::toggleSlideshow() {
1900    fAnimating = !fAnimating;
1901    this->postAnimatingEvent();
1902    this->updateTitle();
1903}
1904
1905void SampleWindow::toggleRendering() {
1906    this->setDeviceType(cycle_devicetype(fDeviceType));
1907    this->updateTitle();
1908    this->inval(NULL);
1909}
1910
1911void SampleWindow::toggleFPS() {
1912    fMeasureFPS = !fMeasureFPS;
1913    this->updateTitle();
1914    this->inval(NULL);
1915}
1916
1917#include "SkDumpCanvas.h"
1918
1919bool SampleWindow::onHandleKey(SkKey key) {
1920    {
1921        SkView* view = curr_view(this);
1922        if (view) {
1923            SkEvent evt(gKeyEvtName);
1924            evt.setFast32(key);
1925            if (view->doQuery(&evt)) {
1926                return true;
1927            }
1928        }
1929    }
1930    switch (key) {
1931        case kRight_SkKey:
1932            if (this->nextSample()) {
1933                return true;
1934            }
1935            break;
1936        case kLeft_SkKey:
1937            if (this->previousSample()) {
1938                return true;
1939            }
1940            return true;
1941        case kUp_SkKey:
1942            if (USE_ARROWS_FOR_ZOOM) {
1943                this->changeZoomLevel(1.f / 32.f);
1944            } else {
1945                fNClip = !fNClip;
1946                this->inval(NULL);
1947                this->updateTitle();
1948            }
1949            return true;
1950        case kDown_SkKey:
1951            if (USE_ARROWS_FOR_ZOOM) {
1952                this->changeZoomLevel(-1.f / 32.f);
1953            } else {
1954                this->setColorType(cycle_colortypes(this->getBitmap().colorType()));
1955                this->updateTitle();
1956            }
1957            return true;
1958        case kOK_SkKey: {
1959            SkString title;
1960            if (curr_title(this, &title)) {
1961                writeTitleToPrefs(title.c_str());
1962            }
1963            return true;
1964        }
1965        case kBack_SkKey:
1966            this->showOverview();
1967            return true;
1968        default:
1969            break;
1970    }
1971    return this->INHERITED::onHandleKey(key);
1972}
1973
1974///////////////////////////////////////////////////////////////////////////////
1975
1976static const char gGestureClickType[] = "GestureClickType";
1977
1978bool SampleWindow::onDispatchClick(int x, int y, Click::State state,
1979        void* owner, unsigned modi) {
1980    if (Click::kMoved_State == state) {
1981        updatePointer(x, y);
1982    }
1983    int w = SkScalarRoundToInt(this->width());
1984    int h = SkScalarRoundToInt(this->height());
1985
1986    // check for the resize-box
1987    if (w - x < 16 && h - y < 16) {
1988        return false;   // let the OS handle the click
1989    }
1990    else if (fMagnify) {
1991        //it's only necessary to update the drawing if there's a click
1992        this->inval(NULL);
1993        return false; //prevent dragging while magnify is enabled
1994    } else {
1995        // capture control+option, and trigger debugger
1996        if ((modi & kControl_SkModifierKey) && (modi & kOption_SkModifierKey)) {
1997            if (Click::kDown_State == state) {
1998                SkEvent evt("debug-hit-test");
1999                evt.setS32("debug-hit-test-x", x);
2000                evt.setS32("debug-hit-test-y", y);
2001                curr_view(this)->doEvent(evt);
2002            }
2003            return true;
2004        } else {
2005            return this->INHERITED::onDispatchClick(x, y, state, owner, modi);
2006        }
2007    }
2008}
2009
2010class GestureClick : public SkView::Click {
2011public:
2012    GestureClick(SkView* target) : SkView::Click(target) {
2013        this->setType(gGestureClickType);
2014    }
2015
2016    static bool IsGesture(Click* click) {
2017        return click->isType(gGestureClickType);
2018    }
2019};
2020
2021SkView::Click* SampleWindow::onFindClickHandler(SkScalar x, SkScalar y,
2022                                                unsigned modi) {
2023    return new GestureClick(this);
2024}
2025
2026bool SampleWindow::onClick(Click* click) {
2027    if (GestureClick::IsGesture(click)) {
2028        float x = static_cast<float>(click->fICurr.fX);
2029        float y = static_cast<float>(click->fICurr.fY);
2030
2031        switch (click->fState) {
2032            case SkView::Click::kDown_State:
2033                fGesture.touchBegin(click->fOwner, x, y);
2034                break;
2035            case SkView::Click::kMoved_State:
2036                fGesture.touchMoved(click->fOwner, x, y);
2037                this->updateMatrix();
2038                break;
2039            case SkView::Click::kUp_State:
2040                fGesture.touchEnd(click->fOwner);
2041                this->updateMatrix();
2042                break;
2043        }
2044        return true;
2045    }
2046    return false;
2047}
2048
2049///////////////////////////////////////////////////////////////////////////////
2050
2051void SampleWindow::loadView(SkView* view) {
2052    SkView::F2BIter iter(this);
2053    SkView* prev = iter.next();
2054    if (prev) {
2055        prev->detachFromParent();
2056    }
2057
2058    view->setVisibleP(true);
2059    view->setClipToBounds(false);
2060    this->attachChildToFront(view)->unref();
2061    view->setSize(this->width(), this->height());
2062
2063    //repopulate the slide menu when a view is loaded
2064    fSlideMenu->reset();
2065
2066    (void)SampleView::SetUsePipe(view, fPipeState);
2067    if (SampleView::IsSampleView(view)) {
2068        SampleView* sampleView = (SampleView*)view;
2069        sampleView->requestMenu(fSlideMenu);
2070        sampleView->onTileSizeChanged(this->tileSize());
2071    }
2072    this->onUpdateMenu(fSlideMenu);
2073    this->updateTitle();
2074}
2075
2076static const char* gDeviceTypePrefix[] = {
2077    "raster: ",
2078    "picture: ",
2079#if SK_SUPPORT_GPU
2080    "opengl: ",
2081#if SK_ANGLE
2082    "angle: ",
2083#endif // SK_ANGLE
2084    "null-gl: "
2085#endif // SK_SUPPORT_GPU
2086};
2087SK_COMPILE_ASSERT(SK_ARRAY_COUNT(gDeviceTypePrefix) == SampleWindow::kDeviceTypeCnt,
2088                  array_size_mismatch);
2089
2090static const char* trystate_str(SkOSMenu::TriState state,
2091                                const char trueStr[], const char falseStr[]) {
2092    if (SkOSMenu::kOnState == state) {
2093        return trueStr;
2094    } else if (SkOSMenu::kOffState == state) {
2095        return falseStr;
2096    }
2097    return NULL;
2098}
2099
2100void SampleWindow::updateTitle() {
2101    SkView* view = curr_view(this);
2102
2103    SkString title;
2104    if (!curr_title(this, &title)) {
2105        title.set("<unknown>");
2106    }
2107
2108    title.prepend(gDeviceTypePrefix[fDeviceType]);
2109
2110    title.prepend(" ");
2111    title.prepend(sk_tool_utils::colortype_name(this->getBitmap().colorType()));
2112
2113    if (fTilingMode != kNo_Tiling) {
2114        title.prependf("<T: %s> ", gTilingInfo[fTilingMode].label);
2115    }
2116    if (fAnimating) {
2117        title.prepend("<A> ");
2118    }
2119    if (fRotate) {
2120        title.prepend("<R> ");
2121    }
2122    if (fNClip) {
2123        title.prepend("<C> ");
2124    }
2125    if (fPerspAnim) {
2126        title.prepend("<K> ");
2127    }
2128
2129    title.prepend(trystate_str(fLCDState, "LCD ", "lcd "));
2130    title.prepend(trystate_str(fAAState, "AA ", "aa "));
2131    title.prepend(gFilterLevelStates[fFilterLevelIndex].fLabel);
2132    title.prepend(trystate_str(fSubpixelState, "S ", "s "));
2133    title.prepend(fFlipAxis & kFlipAxis_X ? "X " : NULL);
2134    title.prepend(fFlipAxis & kFlipAxis_Y ? "Y " : NULL);
2135    title.prepend(gHintingStates[fHintingState].label);
2136
2137    if (fZoomLevel) {
2138        title.prependf("{%.2f} ", SkScalarToFloat(fZoomLevel));
2139    }
2140
2141    if (fMeasureFPS) {
2142        title.appendf(" %8.3f ms", fMeasureFPS_Time / (float)FPS_REPEAT_COUNT);
2143    }
2144    if (SampleView::IsSampleView(view)) {
2145        switch (fPipeState) {
2146            case SkOSMenu::kOnState:
2147                title.prepend("<Pipe> ");
2148                break;
2149            case SkOSMenu::kMixedState:
2150                title.prepend("<Tiled Pipe> ");
2151                break;
2152
2153            default:
2154                break;
2155        }
2156        title.prepend("! ");
2157    }
2158
2159#if SK_SUPPORT_GPU
2160    if (IsGpuDeviceType(fDeviceType) &&
2161        NULL != fDevManager &&
2162        fDevManager->getGrRenderTarget() &&
2163        fDevManager->getGrRenderTarget()->numSamples() > 0) {
2164        title.appendf(" [MSAA: %d]",
2165                       fDevManager->getGrRenderTarget()->numSamples());
2166    }
2167#endif
2168
2169    this->setTitle(title.c_str());
2170}
2171
2172void SampleWindow::onSizeChange() {
2173    this->INHERITED::onSizeChange();
2174
2175    SkView::F2BIter iter(this);
2176    SkView* view = iter.next();
2177    view->setSize(this->width(), this->height());
2178
2179    // rebuild our clippath
2180    {
2181        const SkScalar W = this->width();
2182        const SkScalar H = this->height();
2183
2184        fClipPath.reset();
2185#if 0
2186        for (SkScalar y = SK_Scalar1; y < H; y += SkIntToScalar(32)) {
2187            SkRect r;
2188            r.set(SK_Scalar1, y, SkIntToScalar(30), y + SkIntToScalar(30));
2189            for (; r.fLeft < W; r.offset(SkIntToScalar(32), 0))
2190                fClipPath.addRect(r);
2191        }
2192#else
2193        SkRect r;
2194        r.set(0, 0, W, H);
2195        fClipPath.addRect(r, SkPath::kCCW_Direction);
2196        r.set(W/4, H/4, W*3/4, H*3/4);
2197        fClipPath.addRect(r, SkPath::kCW_Direction);
2198#endif
2199    }
2200
2201    fZoomCenterX = SkScalarHalf(this->width());
2202    fZoomCenterY = SkScalarHalf(this->height());
2203
2204#ifdef SK_BUILD_FOR_ANDROID
2205    // FIXME: The first draw after a size change does not work on Android, so
2206    // we post an invalidate.
2207    this->postInvalDelay();
2208#endif
2209    this->updateTitle();    // to refresh our config
2210    fDevManager->windowSizeChanged(this);
2211
2212    if (fTilingMode != kNo_Tiling && SampleView::IsSampleView(view)) {
2213        ((SampleView*)view)->onTileSizeChanged(this->tileSize());
2214    }
2215}
2216
2217///////////////////////////////////////////////////////////////////////////////
2218
2219static const char is_sample_view_tag[] = "sample-is-sample-view";
2220static const char repeat_count_tag[] = "sample-set-repeat-count";
2221static const char set_use_pipe_tag[] = "sample-set-use-pipe";
2222
2223bool SampleView::IsSampleView(SkView* view) {
2224    SkEvent evt(is_sample_view_tag);
2225    return view->doQuery(&evt);
2226}
2227
2228bool SampleView::SetRepeatDraw(SkView* view, int count) {
2229    SkEvent evt(repeat_count_tag);
2230    evt.setFast32(count);
2231    return view->doEvent(evt);
2232}
2233
2234bool SampleView::SetUsePipe(SkView* view, SkOSMenu::TriState state) {
2235    SkEvent evt;
2236    evt.setS32(set_use_pipe_tag, state);
2237    return view->doEvent(evt);
2238}
2239
2240bool SampleView::onEvent(const SkEvent& evt) {
2241    if (evt.isType(repeat_count_tag)) {
2242        fRepeatCount = evt.getFast32();
2243        return true;
2244    }
2245
2246    int32_t pipeHolder;
2247    if (evt.findS32(set_use_pipe_tag, &pipeHolder)) {
2248        fPipeState = static_cast<SkOSMenu::TriState>(pipeHolder);
2249        return true;
2250    }
2251
2252    return this->INHERITED::onEvent(evt);
2253}
2254
2255bool SampleView::onQuery(SkEvent* evt) {
2256    if (evt->isType(is_sample_view_tag)) {
2257        return true;
2258    }
2259    return this->INHERITED::onQuery(evt);
2260}
2261
2262
2263class SimplePC : public SkGPipeController {
2264public:
2265    SimplePC(SkCanvas* target);
2266    ~SimplePC();
2267
2268    virtual void* requestBlock(size_t minRequest, size_t* actual);
2269    virtual void notifyWritten(size_t bytes);
2270
2271private:
2272    SkGPipeReader   fReader;
2273    void*           fBlock;
2274    size_t          fBlockSize;
2275    size_t          fBytesWritten;
2276    int             fAtomsWritten;
2277    SkGPipeReader::Status   fStatus;
2278
2279    size_t        fTotalWritten;
2280};
2281
2282SimplePC::SimplePC(SkCanvas* target) : fReader(target) {
2283    fBlock = NULL;
2284    fBlockSize = fBytesWritten = 0;
2285    fStatus = SkGPipeReader::kDone_Status;
2286    fTotalWritten = 0;
2287    fAtomsWritten = 0;
2288    fReader.setBitmapDecoder(&SkImageDecoder::DecodeMemory);
2289}
2290
2291SimplePC::~SimplePC() {
2292//    SkASSERT(SkGPipeReader::kDone_Status == fStatus);
2293    if (fTotalWritten) {
2294        SkDebugf("--- %d bytes %d atoms, status %d\n", fTotalWritten,
2295                 fAtomsWritten, fStatus);
2296#ifdef  PIPE_FILE
2297        //File is open in append mode
2298        FILE* f = fopen(FILE_PATH, "ab");
2299        SkASSERT(f != NULL);
2300        fwrite((const char*)fBlock + fBytesWritten, 1, bytes, f);
2301        fclose(f);
2302#endif
2303#ifdef PIPE_NET
2304        if (fAtomsWritten > 1 && fTotalWritten > 4) { //ignore done
2305            gServer.acceptConnections();
2306            gServer.writePacket(fBlock, fTotalWritten);
2307        }
2308#endif
2309    }
2310    sk_free(fBlock);
2311}
2312
2313void* SimplePC::requestBlock(size_t minRequest, size_t* actual) {
2314    sk_free(fBlock);
2315
2316    fBlockSize = minRequest * 4;
2317    fBlock = sk_malloc_throw(fBlockSize);
2318    fBytesWritten = 0;
2319    *actual = fBlockSize;
2320    return fBlock;
2321}
2322
2323void SimplePC::notifyWritten(size_t bytes) {
2324    SkASSERT(fBytesWritten + bytes <= fBlockSize);
2325    fStatus = fReader.playback((const char*)fBlock + fBytesWritten, bytes);
2326    SkASSERT(SkGPipeReader::kError_Status != fStatus);
2327    fBytesWritten += bytes;
2328    fTotalWritten += bytes;
2329
2330    fAtomsWritten += 1;
2331}
2332
2333void SampleView::draw(SkCanvas* canvas) {
2334    if (SkOSMenu::kOffState == fPipeState) {
2335        this->INHERITED::draw(canvas);
2336    } else {
2337        SkGPipeWriter writer;
2338        SimplePC controller(canvas);
2339        TiledPipeController tc(canvas->getDevice()->accessBitmap(false),
2340                               &SkImageDecoder::DecodeMemory,
2341                               &canvas->getTotalMatrix());
2342        SkGPipeController* pc;
2343        if (SkOSMenu::kMixedState == fPipeState) {
2344            pc = &tc;
2345        } else {
2346            pc = &controller;
2347        }
2348        uint32_t flags = SkGPipeWriter::kCrossProcess_Flag;
2349
2350        canvas = writer.startRecording(pc, flags);
2351        //Must draw before controller goes out of scope and sends data
2352        this->INHERITED::draw(canvas);
2353        //explicitly end recording to ensure writer is flushed before the memory
2354        //is freed in the deconstructor of the controller
2355        writer.endRecording();
2356    }
2357}
2358
2359void SampleView::onDraw(SkCanvas* canvas) {
2360    this->onDrawBackground(canvas);
2361
2362    for (int i = 0; i < fRepeatCount; i++) {
2363        SkAutoCanvasRestore acr(canvas, true);
2364        this->onDrawContent(canvas);
2365    }
2366}
2367
2368void SampleView::onDrawBackground(SkCanvas* canvas) {
2369    canvas->drawColor(fBGColor);
2370}
2371
2372///////////////////////////////////////////////////////////////////////////////
2373
2374template <typename T> void SkTBSort(T array[], int count) {
2375    for (int i = 1; i < count - 1; i++) {
2376        bool didSwap = false;
2377        for (int j = count - 1; j > i; --j) {
2378            if (array[j] < array[j-1]) {
2379                T tmp(array[j-1]);
2380                array[j-1] = array[j];
2381                array[j] = tmp;
2382                didSwap = true;
2383            }
2384        }
2385        if (!didSwap) {
2386            break;
2387        }
2388    }
2389
2390    for (int k = 0; k < count - 1; k++) {
2391        SkASSERT(!(array[k+1] < array[k]));
2392    }
2393}
2394
2395#include "SkRandom.h"
2396
2397static void rand_rect(SkIRect* rect, SkRandom& rand) {
2398    int bits = 8;
2399    int shift = 32 - bits;
2400    rect->set(rand.nextU() >> shift, rand.nextU() >> shift,
2401              rand.nextU() >> shift, rand.nextU() >> shift);
2402    rect->sort();
2403}
2404
2405static void dumpRect(const SkIRect& r) {
2406    SkDebugf(" { %d, %d, %d, %d },\n",
2407             r.fLeft, r.fTop,
2408             r.fRight, r.fBottom);
2409}
2410
2411static void test_rects(const SkIRect rect[], int count) {
2412    SkRegion rgn0, rgn1;
2413
2414    for (int i = 0; i < count; i++) {
2415        rgn0.op(rect[i], SkRegion::kUnion_Op);
2416     //   dumpRect(rect[i]);
2417    }
2418    rgn1.setRects(rect, count);
2419
2420    if (rgn0 != rgn1) {
2421        SkDebugf("\n");
2422        for (int i = 0; i < count; i++) {
2423            dumpRect(rect[i]);
2424        }
2425        SkDebugf("\n");
2426    }
2427}
2428
2429static void test() {
2430    size_t i;
2431
2432    const SkIRect r0[] = {
2433        { 0, 0, 1, 1 },
2434        { 2, 2, 3, 3 },
2435    };
2436    const SkIRect r1[] = {
2437        { 0, 0, 1, 3 },
2438        { 1, 1, 2, 2 },
2439        { 2, 0, 3, 3 },
2440    };
2441    const SkIRect r2[] = {
2442        { 0, 0, 1, 2 },
2443        { 2, 1, 3, 3 },
2444        { 4, 0, 5, 1 },
2445        { 6, 0, 7, 4 },
2446    };
2447
2448    static const struct {
2449        const SkIRect* fRects;
2450        int            fCount;
2451    } gRecs[] = {
2452        { r0, SK_ARRAY_COUNT(r0) },
2453        { r1, SK_ARRAY_COUNT(r1) },
2454        { r2, SK_ARRAY_COUNT(r2) },
2455    };
2456
2457    for (i = 0; i < SK_ARRAY_COUNT(gRecs); i++) {
2458        test_rects(gRecs[i].fRects, gRecs[i].fCount);
2459    }
2460
2461    SkRandom rand;
2462    for (i = 0; i < 10000; i++) {
2463        SkRegion rgn0, rgn1;
2464
2465        const int N = 8;
2466        SkIRect rect[N];
2467        for (int j = 0; j < N; j++) {
2468            rand_rect(&rect[j], rand);
2469        }
2470        test_rects(rect, N);
2471    }
2472}
2473
2474// FIXME: this should be in a header
2475SkOSWindow* create_sk_window(void* hwnd, int argc, char** argv);
2476SkOSWindow* create_sk_window(void* hwnd, int argc, char** argv) {
2477    if (false) { // avoid bit rot, suppress warning
2478        test();
2479    }
2480    return new SampleWindow(hwnd, argc, argv, NULL);
2481}
2482
2483// FIXME: this should be in a header
2484void get_preferred_size(int* x, int* y, int* width, int* height);
2485void get_preferred_size(int* x, int* y, int* width, int* height) {
2486    *x = 10;
2487    *y = 50;
2488    *width = 640;
2489    *height = 480;
2490}
2491
2492#ifdef SK_BUILD_FOR_IOS
2493void save_args(int argc, char *argv[]) {
2494}
2495#endif
2496
2497// FIXME: this should be in a header
2498void application_init();
2499void application_init() {
2500//    setenv("ANDROID_ROOT", "../../../data", 0);
2501#ifdef SK_BUILD_FOR_MAC
2502    setenv("ANDROID_ROOT", "/android/device/data", 0);
2503#endif
2504    SkGraphics::Init();
2505    SkEvent::Init();
2506}
2507
2508// FIXME: this should be in a header
2509void application_term();
2510void application_term() {
2511    SkEvent::Term();
2512    SkGraphics::Term();
2513}
2514