SampleApp.cpp revision 4469938e92d779dff05e745559e67907bbf21e78 
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#include "SampleApp.h"
8
9#include "SkData.h"
10#include "SkCanvas.h"
11#include "SkDevice.h"
12#include "SkGraphics.h"
13#include "SkImageDecoder.h"
14#include "SkImageEncoder.h"
15#include "SkPaint.h"
16#include "SkPicture.h"
17#include "SkStream.h"
18#include "SkTSort.h"
19#include "SkTime.h"
20#include "SkWindow.h"
21
22#include "SampleCode.h"
23#include "SkTypeface.h"
24
25#if SK_SUPPORT_GPU
26#include "gl/GrGLInterface.h"
27#include "gl/GrGLUtil.h"
28#include "GrRenderTarget.h"
29#include "GrContext.h"
30#include "SkGpuDevice.h"
31#else
32class GrContext;
33#endif
34
35#include "SkOSFile.h"
36#include "SkPDFDevice.h"
37#include "SkPDFDocument.h"
38#include "SkStream.h"
39
40#include "SkGPipe.h"
41#include "SamplePipeControllers.h"
42#include "OverView.h"
43#include "TransitionView.h"
44
45SK_DEFINE_INST_COUNT(SampleWindow::DeviceManager)
46
47extern SampleView* CreateSamplePictFileView(const char filename[]);
48
49class PictFileFactory : public SkViewFactory {
50    SkString fFilename;
51public:
52    PictFileFactory(const SkString& filename) : fFilename(filename) {}
53    virtual SkView* operator() () const SK_OVERRIDE {
54        return CreateSamplePictFileView(fFilename.c_str());
55    }
56};
57
58#ifdef SAMPLE_PDF_FILE_VIEWER
59extern SampleView* CreateSamplePdfFileViewer(const char filename[]);
60
61class PdfFileViewerFactory : public SkViewFactory {
62    SkString fFilename;
63public:
64    PdfFileViewerFactory(const SkString& filename) : fFilename(filename) {}
65    virtual SkView* operator() () const SK_OVERRIDE {
66        return CreateSamplePdfFileViewer(fFilename.c_str());
67    }
68};
69#endif  // SAMPLE_PDF_FILE_VIEWER
70
71#define PIPE_FILEx
72#ifdef  PIPE_FILE
73#define FILE_PATH "/path/to/drawing.data"
74#endif
75
76#define PIPE_NETx
77#ifdef  PIPE_NET
78#include "SkSockets.h"
79SkTCPServer gServer;
80#endif
81
82#define USE_ARROWS_FOR_ZOOM true
83
84#if SK_ANGLE
85//#define DEFAULT_TO_ANGLE 1
86#else
87#define DEFAULT_TO_GPU 0 // if 1 default rendering is on GPU
88#endif
89
90#define ANIMATING_EVENTTYPE "nextSample"
91#define ANIMATING_DELAY     250
92
93#ifdef SK_DEBUG
94    #define FPS_REPEAT_MULTIPLIER   1
95#else
96    #define FPS_REPEAT_MULTIPLIER   10
97#endif
98#define FPS_REPEAT_COUNT    (10 * FPS_REPEAT_MULTIPLIER)
99
100static SampleWindow* gSampleWindow;
101
102static bool gShowGMBounds;
103
104static void postEventToSink(SkEvent* evt, SkEventSink* sink) {
105    evt->setTargetID(sink->getSinkID())->post();
106}
107
108///////////////////////////////////////////////////////////////////////////////
109
110static const char* skip_until(const char* str, const char* skip) {
111    if (!str) {
112        return NULL;
113    }
114    return strstr(str, skip);
115}
116
117static const char* skip_past(const char* str, const char* skip) {
118    const char* found = skip_until(str, skip);
119    if (!found) {
120        return NULL;
121    }
122    return found + strlen(skip);
123}
124
125static const char* gPrefFileName = "sampleapp_prefs.txt";
126
127static bool readTitleFromPrefs(SkString* title) {
128    SkFILEStream stream(gPrefFileName);
129    if (!stream.isValid()) {
130        return false;
131    }
132
133    int len = stream.getLength();
134    SkString data(len);
135    stream.read(data.writable_str(), len);
136    const char* s = data.c_str();
137
138    s = skip_past(s, "curr-slide-title");
139    s = skip_past(s, "=");
140    s = skip_past(s, "\"");
141    const char* stop = skip_until(s, "\"");
142    if (stop > s) {
143        title->set(s, stop - s);
144        return true;
145    }
146    return false;
147}
148
149static void writeTitleToPrefs(const char* title) {
150    SkFILEWStream stream(gPrefFileName);
151    SkString data;
152    data.printf("curr-slide-title = \"%s\"\n", title);
153    stream.write(data.c_str(), data.size());
154}
155
156///////////////////////////////////////////////////////////////////////////////
157
158class SampleWindow::DefaultDeviceManager : public SampleWindow::DeviceManager {
159public:
160
161    DefaultDeviceManager() {
162#if SK_SUPPORT_GPU
163        fCurContext = NULL;
164        fCurIntf = NULL;
165        fCurRenderTarget = NULL;
166        fMSAASampleCount = 0;
167#endif
168        fBackend = kNone_BackEndType;
169    }
170
171    virtual ~DefaultDeviceManager() {
172#if SK_SUPPORT_GPU
173        SkSafeUnref(fCurContext);
174        SkSafeUnref(fCurIntf);
175        SkSafeUnref(fCurRenderTarget);
176#endif
177    }
178
179    virtual void setUpBackend(SampleWindow* win, int msaaSampleCount) {
180        SkASSERT(kNone_BackEndType == fBackend);
181
182        fBackend = kNone_BackEndType;
183
184#if SK_SUPPORT_GPU
185        switch (win->getDeviceType()) {
186            case kRaster_DeviceType:
187                // fallthrough
188            case kPicture_DeviceType:
189                // fallthrough
190            case kGPU_DeviceType:
191                // fallthrough
192            case kNullGPU_DeviceType:
193                // all these guys use the native backend
194                fBackend = kNativeGL_BackEndType;
195                break;
196#if SK_ANGLE
197            case kANGLE_DeviceType:
198                // ANGLE is really the only odd man out
199                fBackend = kANGLE_BackEndType;
200                break;
201#endif // SK_ANGLE
202            default:
203                SkASSERT(false);
204                break;
205        }
206        AttachmentInfo attachmentInfo;
207        bool result = win->attach(fBackend, msaaSampleCount, &attachmentInfo);
208        if (!result) {
209            SkDebugf("Failed to initialize GL");
210            return;
211        }
212        fMSAASampleCount = msaaSampleCount;
213
214        SkASSERT(NULL == fCurIntf);
215        switch (win->getDeviceType()) {
216            case kRaster_DeviceType:
217                // fallthrough
218            case kPicture_DeviceType:
219                // fallthrough
220            case kGPU_DeviceType:
221                // all these guys use the native interface
222                fCurIntf = GrGLCreateNativeInterface();
223                break;
224#if SK_ANGLE
225            case kANGLE_DeviceType:
226                fCurIntf = GrGLCreateANGLEInterface();
227                break;
228#endif // SK_ANGLE
229            case kNullGPU_DeviceType:
230                fCurIntf = GrGLCreateNullInterface();
231                break;
232            default:
233                SkASSERT(false);
234                break;
235        }
236
237        SkASSERT(NULL == fCurContext);
238        fCurContext = GrContext::Create(kOpenGL_GrBackend, (GrBackendContext) fCurIntf);
239
240        if (NULL == fCurContext || NULL == fCurIntf) {
241            // We need some context and interface to see results
242            SkSafeUnref(fCurContext);
243            SkSafeUnref(fCurIntf);
244            SkDebugf("Failed to setup 3D");
245
246            win->detach();
247        }
248#endif // SK_SUPPORT_GPU
249        // call windowSizeChanged to create the render target
250        this->windowSizeChanged(win);
251    }
252
253    virtual void tearDownBackend(SampleWindow *win) {
254#if SK_SUPPORT_GPU
255        SkSafeUnref(fCurContext);
256        fCurContext = NULL;
257
258        SkSafeUnref(fCurIntf);
259        fCurIntf = NULL;
260
261        SkSafeUnref(fCurRenderTarget);
262        fCurRenderTarget = NULL;
263#endif
264        win->detach();
265        fBackend = kNone_BackEndType;
266    }
267
268    virtual SkCanvas* createCanvas(SampleWindow::DeviceType dType,
269                                   SampleWindow* win) {
270#if SK_SUPPORT_GPU
271        if (IsGpuDeviceType(dType) && NULL != fCurContext) {
272            SkAutoTUnref<SkBaseDevice> device(new SkGpuDevice(fCurContext, fCurRenderTarget));
273            return new SkCanvas(device);
274        } else
275#endif
276        {
277            return NULL;
278        }
279    }
280
281    virtual void publishCanvas(SampleWindow::DeviceType dType,
282                               SkCanvas* canvas,
283                               SampleWindow* win) {
284#if SK_SUPPORT_GPU
285        if (fCurContext) {
286            // in case we have queued drawing calls
287            fCurContext->flush();
288
289            if (!IsGpuDeviceType(dType)) {
290                // need to send the raster bits to the (gpu) window
291                fCurContext->setRenderTarget(fCurRenderTarget);
292                const SkBitmap& bm = win->getBitmap();
293                fCurRenderTarget->writePixels(0, 0, bm.width(), bm.height(),
294                                             kSkia8888_GrPixelConfig,
295                                             bm.getPixels(),
296                                             bm.rowBytes());
297            }
298        }
299#endif
300
301        win->present();
302    }
303
304    virtual void windowSizeChanged(SampleWindow* win) {
305#if SK_SUPPORT_GPU
306        if (fCurContext) {
307            AttachmentInfo attachmentInfo;
308            win->attach(fBackend, fMSAASampleCount, &attachmentInfo);
309
310            GrBackendRenderTargetDesc desc;
311            desc.fWidth = SkScalarRound(win->width());
312            desc.fHeight = SkScalarRound(win->height());
313            desc.fConfig = kSkia8888_GrPixelConfig;
314            desc.fOrigin = kBottomLeft_GrSurfaceOrigin;
315            desc.fSampleCnt = attachmentInfo.fSampleCount;
316            desc.fStencilBits = attachmentInfo.fStencilBits;
317            GrGLint buffer;
318            GR_GL_GetIntegerv(fCurIntf, GR_GL_FRAMEBUFFER_BINDING, &buffer);
319            desc.fRenderTargetHandle = buffer;
320
321            SkSafeUnref(fCurRenderTarget);
322            fCurRenderTarget = fCurContext->wrapBackendRenderTarget(desc);
323        }
324#endif
325    }
326
327    virtual GrContext* getGrContext() {
328#if SK_SUPPORT_GPU
329        return fCurContext;
330#else
331        return NULL;
332#endif
333    }
334
335    virtual GrRenderTarget* getGrRenderTarget() SK_OVERRIDE {
336#if SK_SUPPORT_GPU
337        return fCurRenderTarget;
338#else
339        return NULL;
340#endif
341    }
342
343private:
344
345#if SK_SUPPORT_GPU
346    GrContext*              fCurContext;
347    const GrGLInterface*    fCurIntf;
348    GrRenderTarget*         fCurRenderTarget;
349    int fMSAASampleCount;
350#endif
351
352    SkOSWindow::SkBackEndTypes fBackend;
353
354    typedef SampleWindow::DeviceManager INHERITED;
355};
356
357///////////////
358static const char view_inval_msg[] = "view-inval-msg";
359
360void SampleWindow::postInvalDelay() {
361    (new SkEvent(view_inval_msg, this->getSinkID()))->postDelay(1);
362}
363
364static bool isInvalEvent(const SkEvent& evt) {
365    return evt.isType(view_inval_msg);
366}
367//////////////////
368
369SkFuncViewFactory::SkFuncViewFactory(SkViewCreateFunc func)
370    : fCreateFunc(func) {
371}
372
373SkView* SkFuncViewFactory::operator() () const {
374    return (*fCreateFunc)();
375}
376
377#include "GMSampleView.h"
378
379SkGMSampleViewFactory::SkGMSampleViewFactory(GMFactoryFunc func)
380    : fFunc(func) {
381}
382
383SkView* SkGMSampleViewFactory::operator() () const {
384    return new GMSampleView(fFunc(NULL));
385}
386
387SkViewRegister* SkViewRegister::gHead;
388SkViewRegister::SkViewRegister(SkViewFactory* fact) : fFact(fact) {
389    fFact->ref();
390    fChain = gHead;
391    gHead = this;
392}
393
394SkViewRegister::SkViewRegister(SkViewCreateFunc func) {
395    fFact = new SkFuncViewFactory(func);
396    fChain = gHead;
397    gHead = this;
398}
399
400SkViewRegister::SkViewRegister(GMFactoryFunc func) {
401    fFact = new SkGMSampleViewFactory(func);
402    fChain = gHead;
403    gHead = this;
404}
405
406class AutoUnrefArray {
407public:
408    AutoUnrefArray() {}
409    ~AutoUnrefArray() {
410        int count = fObjs.count();
411        for (int i = 0; i < count; ++i) {
412            fObjs[i]->unref();
413        }
414    }
415    SkRefCnt*& push_back() { return *fObjs.append(); }
416
417private:
418    SkTDArray<SkRefCnt*> fObjs;
419};
420
421// registers GMs as Samples
422// This can't be performed during static initialization because it could be
423// run before GMRegistry has been fully built.
424static void SkGMRegistyToSampleRegistry() {
425    static bool gOnce;
426    static AutoUnrefArray fRegisters;
427
428    if (!gOnce) {
429        const skiagm::GMRegistry* gmreg = skiagm::GMRegistry::Head();
430        while (gmreg) {
431            fRegisters.push_back() = new SkViewRegister(gmreg->factory());
432            gmreg = gmreg->next();
433        }
434        gOnce = true;
435    }
436}
437
438#if 0
439#include <CoreFoundation/CoreFoundation.h>
440#include <CoreFoundation/CFURLAccess.h>
441
442static void testpdf() {
443    CFStringRef path = CFStringCreateWithCString(NULL, "/test.pdf",
444                                                 kCFStringEncodingUTF8);
445    CFURLRef url = CFURLCreateWithFileSystemPath(NULL, path,
446                                              kCFURLPOSIXPathStyle,
447                                              false);
448    CFRelease(path);
449    CGRect box = CGRectMake(0, 0, 8*72, 10*72);
450    CGContextRef cg = CGPDFContextCreateWithURL(url, &box, NULL);
451    CFRelease(url);
452
453    CGContextBeginPage(cg, &box);
454    CGRect r = CGRectMake(10, 10, 40 + 0.5, 50 + 0.5);
455    CGContextFillEllipseInRect(cg, r);
456    CGContextEndPage(cg);
457    CGContextRelease(cg);
458
459    if (false) {
460        SkBitmap bm;
461        bm.setConfig(SkBitmap::kA8_Config, 64, 64);
462        bm.allocPixels();
463        bm.eraseColor(SK_ColorTRANSPARENT);
464
465        SkCanvas canvas(bm);
466
467    }
468}
469#endif
470
471//////////////////////////////////////////////////////////////////////////////
472
473enum FlipAxisEnum {
474    kFlipAxis_X = (1 << 0),
475    kFlipAxis_Y = (1 << 1)
476};
477
478#include "SkDrawFilter.h"
479
480struct HintingState {
481    SkPaint::Hinting hinting;
482    const char* name;
483    const char* label;
484};
485static HintingState gHintingStates[] = {
486    {SkPaint::kNo_Hinting, "Mixed", NULL },
487    {SkPaint::kNo_Hinting, "None", "H0 " },
488    {SkPaint::kSlight_Hinting, "Slight", "Hs " },
489    {SkPaint::kNormal_Hinting, "Normal", "Hn " },
490    {SkPaint::kFull_Hinting, "Full", "Hf " },
491};
492
493class FlagsDrawFilter : public SkDrawFilter {
494public:
495    FlagsDrawFilter(SkOSMenu::TriState lcd, SkOSMenu::TriState aa, SkOSMenu::TriState filter,
496                    SkOSMenu::TriState subpixel, int hinting)
497        : fLCDState(lcd), fAAState(aa), fFilterState(filter), fSubpixelState(subpixel)
498        , fHintingState(hinting) {}
499
500    virtual bool filter(SkPaint* paint, Type t) {
501        if (kText_Type == t && SkOSMenu::kMixedState != fLCDState) {
502            paint->setLCDRenderText(SkOSMenu::kOnState == fLCDState);
503        }
504        if (SkOSMenu::kMixedState != fAAState) {
505            paint->setAntiAlias(SkOSMenu::kOnState == fAAState);
506        }
507        if (SkOSMenu::kMixedState != fFilterState) {
508            paint->setFilterLevel(SkOSMenu::kOnState == fFilterState ?
509                                  SkPaint::kLow_FilterLevel : SkPaint::kNone_FilterLevel);
510        }
511        if (SkOSMenu::kMixedState != fSubpixelState) {
512            paint->setSubpixelText(SkOSMenu::kOnState == fSubpixelState);
513        }
514        if (0 != fHintingState && fHintingState < (int)SK_ARRAY_COUNT(gHintingStates)) {
515            paint->setHinting(gHintingStates[fHintingState].hinting);
516        }
517        return true;
518    }
519
520private:
521    SkOSMenu::TriState  fLCDState;
522    SkOSMenu::TriState  fAAState;
523    SkOSMenu::TriState  fFilterState;
524    SkOSMenu::TriState  fSubpixelState;
525    int fHintingState;
526};
527
528//////////////////////////////////////////////////////////////////////////////
529
530#define MAX_ZOOM_LEVEL  8
531#define MIN_ZOOM_LEVEL  -8
532
533static const char gCharEvtName[] = "SampleCode_Char_Event";
534static const char gKeyEvtName[] = "SampleCode_Key_Event";
535static const char gTitleEvtName[] = "SampleCode_Title_Event";
536static const char gPrefSizeEvtName[] = "SampleCode_PrefSize_Event";
537static const char gFastTextEvtName[] = "SampleCode_FastText_Event";
538static const char gUpdateWindowTitleEvtName[] = "SampleCode_UpdateWindowTitle";
539
540bool SampleCode::CharQ(const SkEvent& evt, SkUnichar* outUni) {
541    if (evt.isType(gCharEvtName, sizeof(gCharEvtName) - 1)) {
542        if (outUni) {
543            *outUni = evt.getFast32();
544        }
545        return true;
546    }
547    return false;
548}
549
550bool SampleCode::KeyQ(const SkEvent& evt, SkKey* outKey) {
551    if (evt.isType(gKeyEvtName, sizeof(gKeyEvtName) - 1)) {
552        if (outKey) {
553            *outKey = (SkKey)evt.getFast32();
554        }
555        return true;
556    }
557    return false;
558}
559
560bool SampleCode::TitleQ(const SkEvent& evt) {
561    return evt.isType(gTitleEvtName, sizeof(gTitleEvtName) - 1);
562}
563
564void SampleCode::TitleR(SkEvent* evt, const char title[]) {
565    SkASSERT(evt && TitleQ(*evt));
566    evt->setString(gTitleEvtName, title);
567}
568
569bool SampleCode::RequestTitle(SkView* view, SkString* title) {
570    SkEvent evt(gTitleEvtName);
571    if (view->doQuery(&evt)) {
572        title->set(evt.findString(gTitleEvtName));
573        return true;
574    }
575    return false;
576}
577
578bool SampleCode::PrefSizeQ(const SkEvent& evt) {
579    return evt.isType(gPrefSizeEvtName, sizeof(gPrefSizeEvtName) - 1);
580}
581
582void SampleCode::PrefSizeR(SkEvent* evt, SkScalar width, SkScalar height) {
583    SkASSERT(evt && PrefSizeQ(*evt));
584    SkScalar size[2];
585    size[0] = width;
586    size[1] = height;
587    evt->setScalars(gPrefSizeEvtName, 2, size);
588}
589
590bool SampleCode::FastTextQ(const SkEvent& evt) {
591    return evt.isType(gFastTextEvtName, sizeof(gFastTextEvtName) - 1);
592}
593
594///////////////////////////////////////////////////////////////////////////////
595
596static SkMSec gAnimTime;
597static SkMSec gAnimTimePrev;
598
599SkMSec SampleCode::GetAnimTime() { return gAnimTime; }
600SkMSec SampleCode::GetAnimTimeDelta() { return gAnimTime - gAnimTimePrev; }
601SkScalar SampleCode::GetAnimSecondsDelta() {
602    return SkDoubleToScalar(GetAnimTimeDelta() / 1000.0);
603}
604
605SkScalar SampleCode::GetAnimScalar(SkScalar speed, SkScalar period) {
606    // since gAnimTime can be up to 32 bits, we can't convert it to a float
607    // or we'll lose the low bits. Hence we use doubles for the intermediate
608    // calculations
609    double seconds = (double)gAnimTime / 1000.0;
610    double value = SkScalarToDouble(speed) * seconds;
611    if (period) {
612        value = ::fmod(value, SkScalarToDouble(period));
613    }
614    return SkDoubleToScalar(value);
615}
616
617SkScalar SampleCode::GetAnimSinScalar(SkScalar amplitude,
618                                      SkScalar periodInSec,
619                                      SkScalar phaseInSec) {
620    if (!periodInSec) {
621        return 0;
622    }
623    double t = (double)gAnimTime / 1000.0 + phaseInSec;
624    t *= SkScalarToFloat(2 * SK_ScalarPI) / periodInSec;
625    amplitude = SK_ScalarHalf * amplitude;
626    return SkScalarMul(amplitude, SkDoubleToScalar(sin(t))) + amplitude;
627}
628
629GrContext* SampleCode::GetGr() {
630    return gSampleWindow ? gSampleWindow->getGrContext() : NULL;
631}
632
633// some GMs rely on having a skiagm::GetGr function defined
634namespace skiagm {
635    // FIXME: this should be moved into a header
636    GrContext* GetGr();
637    GrContext* GetGr() { return SampleCode::GetGr(); }
638}
639
640//////////////////////////////////////////////////////////////////////////////
641
642static SkView* curr_view(SkWindow* wind) {
643    SkView::F2BIter iter(wind);
644    return iter.next();
645}
646
647static bool curr_title(SkWindow* wind, SkString* title) {
648    SkView* view = curr_view(wind);
649    if (view) {
650        SkEvent evt(gTitleEvtName);
651        if (view->doQuery(&evt)) {
652            title->set(evt.findString(gTitleEvtName));
653            return true;
654        }
655    }
656    return false;
657}
658
659void SampleWindow::setZoomCenter(float x, float y)
660{
661    fZoomCenterX = SkFloatToScalar(x);
662    fZoomCenterY = SkFloatToScalar(y);
663}
664
665bool SampleWindow::zoomIn()
666{
667    // Arbitrarily decided
668    if (fFatBitsScale == 25) return false;
669    fFatBitsScale++;
670    this->inval(NULL);
671    return true;
672}
673
674bool SampleWindow::zoomOut()
675{
676    if (fFatBitsScale == 1) return false;
677    fFatBitsScale--;
678    this->inval(NULL);
679    return true;
680}
681
682void SampleWindow::updatePointer(int x, int y)
683{
684    fMouseX = x;
685    fMouseY = y;
686    if (fShowZoomer) {
687        this->inval(NULL);
688    }
689}
690
691static inline SampleWindow::DeviceType cycle_devicetype(SampleWindow::DeviceType ct) {
692    static const SampleWindow::DeviceType gCT[] = {
693        SampleWindow::kPicture_DeviceType,
694#if SK_SUPPORT_GPU
695        SampleWindow::kGPU_DeviceType,
696#if SK_ANGLE
697        SampleWindow::kANGLE_DeviceType,
698#endif // SK_ANGLE
699        SampleWindow::kRaster_DeviceType, // skip the null gpu device in normal cycling
700#endif // SK_SUPPORT_GPU
701        SampleWindow::kRaster_DeviceType
702    };
703    SK_COMPILE_ASSERT(SK_ARRAY_COUNT(gCT) == SampleWindow::kDeviceTypeCnt, array_size_mismatch);
704    return gCT[ct];
705}
706
707static void usage(const char * argv0) {
708    SkDebugf("%s [--slide sampleName] [-i resourcePath] [--msaa sampleCount] [--pictureDir dirPath] [--picture path] [--sort]\n", argv0);
709#ifdef SAMPLE_PDF_FILE_VIEWER
710    SkDebugf("                [--pdfDir pdfPath]\n");
711    SkDebugf("    pdfPath: path to directory pdf files are read from\n");
712#endif  // SAMPLE_PDF_FILE_VIEWER
713    SkDebugf("    sampleName: sample at which to start.\n");
714    SkDebugf("    resourcePath: directory that stores image resources.\n");
715    SkDebugf("    msaa: request multisampling with the given sample count.\n");
716    SkDebugf("    dirPath: path to directory skia pictures are read from\n");
717    SkDebugf("    path: path to skia picture\n");
718    SkDebugf("    --sort: sort samples by title, this would help to compare pdf rendering (P:foo.pdf) with skp rendering (P:foo.pdf)\n");
719}
720
721static SkString getSampleTitle(const SkViewFactory* sampleFactory) {
722    SkView* view = (*sampleFactory)();
723    SkString title;
724    SampleCode::RequestTitle(view, &title);
725    view->unref();
726    return title;
727}
728
729static bool compareSampleTitle(const SkViewFactory* first, const SkViewFactory* second) {
730    return strcmp(getSampleTitle(first).c_str(), getSampleTitle(second).c_str()) < 0;
731}
732
733SampleWindow::SampleWindow(void* hwnd, int argc, char** argv, DeviceManager* devManager)
734    : INHERITED(hwnd)
735    , fDevManager(NULL) {
736
737    fCurrIndex = -1;
738
739    this->registerPictFileSamples(argv, argc);
740    this->registerPictFileSample(argv, argc);
741#ifdef SAMPLE_PDF_FILE_VIEWER
742    this->registerPdfFileViewerSamples(argv, argc);
743#endif  // SAMPLE_PDF_FILE_VIEWER
744    SkGMRegistyToSampleRegistry();
745    {
746        const SkViewRegister* reg = SkViewRegister::Head();
747        while (reg) {
748            *fSamples.append() = reg->factory();
749            reg = reg->next();
750        }
751    }
752
753    bool sort = false;
754    for (int i = 0; i < argc; ++i) {
755        if (!strcmp(argv[i], "--sort")) {
756            sort = true;
757            break;
758        }
759    }
760
761    if (sort) {
762        // Sort samples, so foo.skp and foo.pdf are consecutive and we can quickly spot where
763        // skp -> pdf -> png fails.
764        SkTQSort(fSamples.begin(), fSamples.end() ? fSamples.end() - 1 : NULL, compareSampleTitle);
765    }
766
767    const char* resourcePath = NULL;
768    fMSAASampleCount = 0;
769
770    const char* const commandName = argv[0];
771    char* const* stop = argv + argc;
772    for (++argv; argv < stop; ++argv) {
773        if (!strcmp(*argv, "-i") || !strcmp(*argv, "--resourcePath")) {
774            argv++;
775            if (argv < stop && **argv) {
776                resourcePath = *argv;
777            }
778        } else if (strcmp(*argv, "--slide") == 0) {
779            argv++;
780            if (argv < stop && **argv) {
781                fCurrIndex = findByTitle(*argv);
782                if (fCurrIndex < 0) {
783                    fprintf(stderr, "Unknown sample \"%s\"\n", *argv);
784                    listTitles();
785                }
786            }
787        } else if (strcmp(*argv, "--msaa") == 0) {
788            ++argv;
789            if (argv < stop && **argv) {
790                fMSAASampleCount = atoi(*argv);
791            }
792        } else if (strcmp(*argv, "--list") == 0) {
793            listTitles();
794        } else if (strcmp(*argv, "--pictureDir") == 0) {
795            ++argv;  // This case is dealt with in registerPictFileSamples().
796        } else if (strcmp(*argv, "--picture") == 0) {
797            ++argv;  // This case is dealt with in registerPictFileSample().
798        }
799        else {
800            usage(commandName);
801        }
802    }
803
804    if (fCurrIndex < 0) {
805        SkString title;
806        if (readTitleFromPrefs(&title)) {
807            fCurrIndex = findByTitle(title.c_str());
808        }
809    }
810
811    if (fCurrIndex < 0) {
812        fCurrIndex = 0;
813    }
814
815    gSampleWindow = this;
816
817#ifdef  PIPE_FILE
818    //Clear existing file or create file if it doesn't exist
819    FILE* f = fopen(FILE_PATH, "wb");
820    fclose(f);
821#endif
822
823    fPicture = NULL;
824
825    fDeviceType = kRaster_DeviceType;
826
827#if DEFAULT_TO_GPU
828    fDeviceType = kGPU_DeviceType;
829#endif
830#if SK_ANGLE && DEFAULT_TO_ANGLE
831    fDeviceType = kANGLE_DeviceType;
832#endif
833
834    fUseClip = false;
835    fNClip = false;
836    fAnimating = false;
837    fRotate = false;
838    fRotateAnimTime = 0;
839    fPerspAnim = false;
840    fPerspAnimTime = 0;
841    fRequestGrabImage = false;
842    fPipeState = SkOSMenu::kOffState;
843    fTilingState = SkOSMenu::kOffState;
844    fTileCount.set(1, 1);
845    fMeasureFPS = false;
846    fLCDState = SkOSMenu::kMixedState;
847    fAAState = SkOSMenu::kMixedState;
848    fFilterState = SkOSMenu::kMixedState;
849    fSubpixelState = SkOSMenu::kMixedState;
850    fHintingState = 0;
851    fFlipAxis = 0;
852    fScrollTestX = fScrollTestY = 0;
853
854    fMouseX = fMouseY = 0;
855    fFatBitsScale = 8;
856    fTypeface = SkTypeface::CreateFromTypeface(NULL, SkTypeface::kBold);
857    fShowZoomer = false;
858
859    fZoomLevel = 0;
860    fZoomScale = SK_Scalar1;
861
862    fMagnify = false;
863
864    fSaveToPdf = false;
865    fPdfCanvas = NULL;
866
867    fTransitionNext = 6;
868    fTransitionPrev = 2;
869
870    int sinkID = this->getSinkID();
871    fAppMenu = new SkOSMenu;
872    fAppMenu->setTitle("Global Settings");
873    int itemID;
874
875    itemID =fAppMenu->appendList("Device Type", "Device Type", sinkID, 0,
876                                "Raster", "Picture", "OpenGL",
877#if SK_ANGLE
878                                "ANGLE",
879#endif
880                                NULL);
881    fAppMenu->assignKeyEquivalentToItem(itemID, 'd');
882    itemID = fAppMenu->appendTriState("AA", "AA", sinkID, fAAState);
883    fAppMenu->assignKeyEquivalentToItem(itemID, 'b');
884    itemID = fAppMenu->appendTriState("LCD", "LCD", sinkID, fLCDState);
885    fAppMenu->assignKeyEquivalentToItem(itemID, 'l');
886    itemID = fAppMenu->appendTriState("Filter", "Filter", sinkID, fFilterState);
887    fAppMenu->assignKeyEquivalentToItem(itemID, 'n');
888    itemID = fAppMenu->appendTriState("Subpixel", "Subpixel", sinkID, fSubpixelState);
889    fAppMenu->assignKeyEquivalentToItem(itemID, 's');
890    itemID = fAppMenu->appendList("Hinting", "Hinting", sinkID, fHintingState,
891                                  gHintingStates[0].name,
892                                  gHintingStates[1].name,
893                                  gHintingStates[2].name,
894                                  gHintingStates[3].name,
895                                  gHintingStates[4].name,
896                                  NULL);
897    fAppMenu->assignKeyEquivalentToItem(itemID, 'h');
898
899    fUsePipeMenuItemID = fAppMenu->appendTriState("Pipe", "Pipe" , sinkID,
900                                                  fPipeState);
901    fAppMenu->assignKeyEquivalentToItem(fUsePipeMenuItemID, 'P');
902
903    itemID = fAppMenu->appendTriState("Tiling", "Tiling", sinkID, fTilingState);
904    fAppMenu->assignKeyEquivalentToItem(itemID, 't');
905
906    itemID = fAppMenu->appendSwitch("Slide Show", "Slide Show" , sinkID, false);
907    fAppMenu->assignKeyEquivalentToItem(itemID, 'a');
908    itemID = fAppMenu->appendSwitch("Clip", "Clip" , sinkID, fUseClip);
909    fAppMenu->assignKeyEquivalentToItem(itemID, 'c');
910    itemID = fAppMenu->appendSwitch("Flip X", "Flip X" , sinkID, false);
911    fAppMenu->assignKeyEquivalentToItem(itemID, 'x');
912    itemID = fAppMenu->appendSwitch("Flip Y", "Flip Y" , sinkID, false);
913    fAppMenu->assignKeyEquivalentToItem(itemID, 'y');
914    itemID = fAppMenu->appendSwitch("Zoomer", "Zoomer" , sinkID, fShowZoomer);
915    fAppMenu->assignKeyEquivalentToItem(itemID, 'z');
916    itemID = fAppMenu->appendSwitch("Magnify", "Magnify" , sinkID, fMagnify);
917    fAppMenu->assignKeyEquivalentToItem(itemID, 'm');
918    itemID =fAppMenu->appendList("Transition-Next", "Transition-Next", sinkID,
919                                fTransitionNext, "Up", "Up and Right", "Right",
920                                "Down and Right", "Down", "Down and Left",
921                                "Left", "Up and Left", NULL);
922    fAppMenu->assignKeyEquivalentToItem(itemID, 'j');
923    itemID =fAppMenu->appendList("Transition-Prev", "Transition-Prev", sinkID,
924                                fTransitionPrev, "Up", "Up and Right", "Right",
925                                "Down and Right", "Down", "Down and Left",
926                                "Left", "Up and Left", NULL);
927    fAppMenu->assignKeyEquivalentToItem(itemID, 'k');
928    itemID = fAppMenu->appendAction("Save to PDF", sinkID);
929    fAppMenu->assignKeyEquivalentToItem(itemID, 'e');
930
931    this->addMenu(fAppMenu);
932    fSlideMenu = new SkOSMenu;
933    this->addMenu(fSlideMenu);
934
935//    this->setConfig(SkBitmap::kRGB_565_Config);
936    this->setConfig(SkBitmap::kARGB_8888_Config);
937    this->setVisibleP(true);
938    this->setClipToBounds(false);
939
940    skiagm::GM::SetResourcePath(resourcePath);
941
942    this->loadView((*fSamples[fCurrIndex])());
943
944    fPDFData = NULL;
945
946    if (NULL == devManager) {
947        fDevManager = new DefaultDeviceManager();
948    } else {
949        devManager->ref();
950        fDevManager = devManager;
951    }
952    fDevManager->setUpBackend(this, fMSAASampleCount);
953
954    // If another constructor set our dimensions, ensure that our
955    // onSizeChange gets called.
956    if (this->height() && this->width()) {
957        this->onSizeChange();
958    }
959
960    // can't call this synchronously, since it may require a subclass to
961    // to implement, or the caller may need us to have returned from the
962    // constructor first. Hence we post an event to ourselves.
963//    this->updateTitle();
964    postEventToSink(new SkEvent(gUpdateWindowTitleEvtName), this);
965}
966
967SampleWindow::~SampleWindow() {
968    delete fPicture;
969    delete fPdfCanvas;
970    fTypeface->unref();
971
972    SkSafeUnref(fDevManager);
973}
974
975static void make_filepath(SkString* path, const char* dir, const SkString& name) {
976    size_t len = strlen(dir);
977    path->set(dir);
978    if (len > 0 && dir[len - 1] != '/') {
979        path->append("/");
980    }
981    path->append(name);
982}
983
984void SampleWindow::registerPictFileSample(char** argv, int argc) {
985    const char* pict = NULL;
986
987    for (int i = 0; i < argc; ++i) {
988        if (!strcmp(argv[i], "--picture")) {
989            i += 1;
990            if (i < argc) {
991                pict = argv[i];
992                break;
993            }
994        }
995    }
996    if (pict) {
997        SkString path(pict);
998        fCurrIndex = fSamples.count();
999        *fSamples.append() = new PictFileFactory(path);
1000    }
1001}
1002
1003void SampleWindow::registerPictFileSamples(char** argv, int argc) {
1004    const char* pictDir = NULL;
1005
1006    for (int i = 0; i < argc; ++i) {
1007        if (!strcmp(argv[i], "--pictureDir")) {
1008            i += 1;
1009            if (i < argc) {
1010                pictDir = argv[i];
1011                break;
1012            }
1013        }
1014    }
1015    if (pictDir) {
1016        SkOSFile::Iter iter(pictDir, "skp");
1017        SkString filename;
1018        while (iter.next(&filename)) {
1019            SkString path;
1020            make_filepath(&path, pictDir, filename);
1021            *fSamples.append() = new PictFileFactory(path);
1022        }
1023    }
1024}
1025
1026#ifdef SAMPLE_PDF_FILE_VIEWER
1027void SampleWindow::registerPdfFileViewerSamples(char** argv, int argc) {
1028    const char* pdfDir = NULL;
1029
1030    for (int i = 0; i < argc; ++i) {
1031        if (!strcmp(argv[i], "--pdfDir")) {
1032            i += 1;
1033            if (i < argc) {
1034                pdfDir = argv[i];
1035                break;
1036            }
1037        }
1038    }
1039    if (pdfDir) {
1040        SkOSFile::Iter iter(pdfDir, "pdf");
1041        SkString filename;
1042        while (iter.next(&filename)) {
1043            SkString path;
1044            make_filepath(&path, pdfDir, filename);
1045            *fSamples.append() = new PdfFileViewerFactory(path);
1046        }
1047    }
1048}
1049#endif  // SAMPLE_PDF_FILE_VIEWER
1050
1051
1052int SampleWindow::findByTitle(const char title[]) {
1053    int i, count = fSamples.count();
1054    for (i = 0; i < count; i++) {
1055        if (getSampleTitle(i).equals(title)) {
1056            return i;
1057        }
1058    }
1059    return -1;
1060}
1061
1062void SampleWindow::listTitles() {
1063    int count = fSamples.count();
1064    SkDebugf("All Slides:\n");
1065    for (int i = 0; i < count; i++) {
1066        SkDebugf("    %s\n", getSampleTitle(i).c_str());
1067    }
1068}
1069
1070static SkBitmap capture_bitmap(SkCanvas* canvas) {
1071    SkBitmap bm;
1072    const SkBitmap& src = canvas->getDevice()->accessBitmap(false);
1073    src.copyTo(&bm, src.config());
1074    return bm;
1075}
1076
1077static bool bitmap_diff(SkCanvas* canvas, const SkBitmap& orig,
1078                        SkBitmap* diff) {
1079    const SkBitmap& src = canvas->getDevice()->accessBitmap(false);
1080
1081    SkAutoLockPixels alp0(src);
1082    SkAutoLockPixels alp1(orig);
1083    for (int y = 0; y < src.height(); y++) {
1084        const void* srcP = src.getAddr(0, y);
1085        const void* origP = orig.getAddr(0, y);
1086        size_t bytes = src.width() * src.bytesPerPixel();
1087        if (memcmp(srcP, origP, bytes)) {
1088            SkDebugf("---------- difference on line %d\n", y);
1089            return true;
1090        }
1091    }
1092    return false;
1093}
1094
1095static void drawText(SkCanvas* canvas, SkString string, SkScalar left, SkScalar top, SkPaint& paint)
1096{
1097    SkColor desiredColor = paint.getColor();
1098    paint.setColor(SK_ColorWHITE);
1099    const char* c_str = string.c_str();
1100    size_t size = string.size();
1101    SkRect bounds;
1102    paint.measureText(c_str, size, &bounds);
1103    bounds.offset(left, top);
1104    SkScalar inset = SkIntToScalar(-2);
1105    bounds.inset(inset, inset);
1106    canvas->drawRect(bounds, paint);
1107    if (desiredColor != SK_ColorBLACK) {
1108        paint.setColor(SK_ColorBLACK);
1109        canvas->drawText(c_str, size, left + SK_Scalar1, top + SK_Scalar1, paint);
1110    }
1111    paint.setColor(desiredColor);
1112    canvas->drawText(c_str, size, left, top, paint);
1113}
1114
1115#define XCLIP_N  8
1116#define YCLIP_N  8
1117
1118void SampleWindow::draw(SkCanvas* canvas) {
1119    // update the animation time
1120    if (!gAnimTimePrev && !gAnimTime) {
1121        // first time make delta be 0
1122        gAnimTime = SkTime::GetMSecs();
1123        gAnimTimePrev = gAnimTime;
1124    } else {
1125        gAnimTimePrev = gAnimTime;
1126        gAnimTime = SkTime::GetMSecs();
1127    }
1128
1129    if (fGesture.isActive()) {
1130        this->updateMatrix();
1131    }
1132
1133    if (fMeasureFPS) {
1134        fMeasureFPS_Time = 0;
1135    }
1136
1137    if (fNClip) {
1138        this->INHERITED::draw(canvas);
1139        SkBitmap orig = capture_bitmap(canvas);
1140
1141        const SkScalar w = this->width();
1142        const SkScalar h = this->height();
1143        const SkScalar cw = w / XCLIP_N;
1144        const SkScalar ch = h / YCLIP_N;
1145        for (int y = 0; y < YCLIP_N; y++) {
1146            SkRect r;
1147            r.fTop = y * ch;
1148            r.fBottom = (y + 1) * ch;
1149            if (y == YCLIP_N - 1) {
1150                r.fBottom = h;
1151            }
1152            for (int x = 0; x < XCLIP_N; x++) {
1153                SkAutoCanvasRestore acr(canvas, true);
1154                r.fLeft = x * cw;
1155                r.fRight = (x + 1) * cw;
1156                if (x == XCLIP_N - 1) {
1157                    r.fRight = w;
1158                }
1159                canvas->clipRect(r);
1160                this->INHERITED::draw(canvas);
1161            }
1162        }
1163
1164        SkBitmap diff;
1165        if (bitmap_diff(canvas, orig, &diff)) {
1166        }
1167    } else {
1168        const SkScalar cw = SkScalarDiv(this->width(), SkIntToScalar(fTileCount.width()));
1169        const SkScalar ch = SkScalarDiv(this->height(), SkIntToScalar(fTileCount.height()));
1170
1171        for (int y = 0; y < fTileCount.height(); ++y) {
1172            for (int x = 0; x < fTileCount.width(); ++x) {
1173                SkAutoCanvasRestore acr(canvas, true);
1174                canvas->clipRect(SkRect::MakeXYWH(x * cw, y * ch, cw, ch));
1175                this->INHERITED::draw(canvas);
1176            }
1177        }
1178
1179        if (!fTileCount.equals(1, 1)) {
1180            SkPaint paint;
1181            paint.setColor(0x60FF00FF);
1182            paint.setStyle(SkPaint::kStroke_Style);
1183            for (int y = 0; y < fTileCount.height(); ++y) {
1184                for (int x = 0; x < fTileCount.width(); ++x) {
1185                    canvas->drawRect(SkRect::MakeXYWH(x * cw, y * ch, cw, ch), paint);
1186                }
1187            }
1188        }
1189    }
1190    if (fShowZoomer && !fSaveToPdf) {
1191        showZoomer(canvas);
1192    }
1193    if (fMagnify && !fSaveToPdf) {
1194        magnify(canvas);
1195    }
1196
1197    if (fMeasureFPS && fMeasureFPS_Time) {
1198        this->updateTitle();
1199        this->postInvalDelay();
1200    }
1201
1202    // do this last
1203    fDevManager->publishCanvas(fDeviceType, canvas, this);
1204}
1205
1206static float clipW = 200;
1207static float clipH = 200;
1208void SampleWindow::magnify(SkCanvas* canvas) {
1209    SkRect r;
1210    int count = canvas->save();
1211
1212    SkMatrix m = canvas->getTotalMatrix();
1213    if (!m.invert(&m)) {
1214        return;
1215    }
1216    SkPoint offset, center;
1217    SkScalar mouseX = fMouseX * SK_Scalar1;
1218    SkScalar mouseY = fMouseY * SK_Scalar1;
1219    m.mapXY(mouseX - clipW/2, mouseY - clipH/2, &offset);
1220    m.mapXY(mouseX, mouseY, &center);
1221
1222    r.set(0, 0, clipW * m.getScaleX(), clipH * m.getScaleX());
1223    r.offset(offset.fX, offset.fY);
1224
1225    SkPaint paint;
1226    paint.setColor(0xFF66AAEE);
1227    paint.setStyle(SkPaint::kStroke_Style);
1228    paint.setStrokeWidth(10.f * m.getScaleX());
1229    //lense offset
1230    //canvas->translate(0, -250);
1231    canvas->drawRect(r, paint);
1232    canvas->clipRect(r);
1233
1234    m = canvas->getTotalMatrix();
1235    m.setTranslate(-center.fX, -center.fY);
1236    m.postScale(0.5f * fFatBitsScale, 0.5f * fFatBitsScale);
1237    m.postTranslate(center.fX, center.fY);
1238    canvas->concat(m);
1239
1240    this->INHERITED::draw(canvas);
1241
1242    canvas->restoreToCount(count);
1243}
1244
1245void SampleWindow::showZoomer(SkCanvas* canvas) {
1246        int count = canvas->save();
1247        canvas->resetMatrix();
1248        // Ensure the mouse position is on screen.
1249        int width = SkScalarRound(this->width());
1250        int height = SkScalarRound(this->height());
1251        if (fMouseX >= width) fMouseX = width - 1;
1252        else if (fMouseX < 0) fMouseX = 0;
1253        if (fMouseY >= height) fMouseY = height - 1;
1254        else if (fMouseY < 0) fMouseY = 0;
1255
1256        SkBitmap bitmap = capture_bitmap(canvas);
1257        bitmap.lockPixels();
1258
1259        // Find the size of the zoomed in view, forced to be odd, so the examined pixel is in the middle.
1260        int zoomedWidth = (width >> 1) | 1;
1261        int zoomedHeight = (height >> 1) | 1;
1262        SkIRect src;
1263        src.set(0, 0, zoomedWidth / fFatBitsScale, zoomedHeight / fFatBitsScale);
1264        src.offset(fMouseX - (src.width()>>1), fMouseY - (src.height()>>1));
1265        SkRect dest;
1266        dest.set(0, 0, SkIntToScalar(zoomedWidth), SkIntToScalar(zoomedHeight));
1267        dest.offset(SkIntToScalar(width - zoomedWidth), SkIntToScalar(height - zoomedHeight));
1268        SkPaint paint;
1269        // Clear the background behind our zoomed in view
1270        paint.setColor(SK_ColorWHITE);
1271        canvas->drawRect(dest, paint);
1272        canvas->drawBitmapRect(bitmap, &src, dest);
1273        paint.setColor(SK_ColorBLACK);
1274        paint.setStyle(SkPaint::kStroke_Style);
1275        // Draw a border around the pixel in the middle
1276        SkRect originalPixel;
1277        originalPixel.set(SkIntToScalar(fMouseX), SkIntToScalar(fMouseY), SkIntToScalar(fMouseX + 1), SkIntToScalar(fMouseY + 1));
1278        SkMatrix matrix;
1279        SkRect scalarSrc;
1280        scalarSrc.set(src);
1281        SkColor color = bitmap.getColor(fMouseX, fMouseY);
1282        if (matrix.setRectToRect(scalarSrc, dest, SkMatrix::kFill_ScaleToFit)) {
1283            SkRect pixel;
1284            matrix.mapRect(&pixel, originalPixel);
1285            // TODO Perhaps measure the values and make the outline white if it's "dark"
1286            if (color == SK_ColorBLACK) {
1287                paint.setColor(SK_ColorWHITE);
1288            }
1289            canvas->drawRect(pixel, paint);
1290        }
1291        paint.setColor(SK_ColorBLACK);
1292        // Draw a border around the destination rectangle
1293        canvas->drawRect(dest, paint);
1294        paint.setStyle(SkPaint::kStrokeAndFill_Style);
1295        // Identify the pixel and its color on screen
1296        paint.setTypeface(fTypeface);
1297        paint.setAntiAlias(true);
1298        SkScalar lineHeight = paint.getFontMetrics(NULL);
1299        SkString string;
1300        string.appendf("(%i, %i)", fMouseX, fMouseY);
1301        SkScalar left = dest.fLeft + SkIntToScalar(3);
1302        SkScalar i = SK_Scalar1;
1303        drawText(canvas, string, left, SkScalarMulAdd(lineHeight, i, dest.fTop), paint);
1304        // Alpha
1305        i += SK_Scalar1;
1306        string.reset();
1307        string.appendf("A: %X", SkColorGetA(color));
1308        drawText(canvas, string, left, SkScalarMulAdd(lineHeight, i, dest.fTop), paint);
1309        // Red
1310        i += SK_Scalar1;
1311        string.reset();
1312        string.appendf("R: %X", SkColorGetR(color));
1313        paint.setColor(SK_ColorRED);
1314        drawText(canvas, string, left, SkScalarMulAdd(lineHeight, i, dest.fTop), paint);
1315        // Green
1316        i += SK_Scalar1;
1317        string.reset();
1318        string.appendf("G: %X", SkColorGetG(color));
1319        paint.setColor(SK_ColorGREEN);
1320        drawText(canvas, string, left, SkScalarMulAdd(lineHeight, i, dest.fTop), paint);
1321        // Blue
1322        i += SK_Scalar1;
1323        string.reset();
1324        string.appendf("B: %X", SkColorGetB(color));
1325        paint.setColor(SK_ColorBLUE);
1326        drawText(canvas, string, left, SkScalarMulAdd(lineHeight, i, dest.fTop), paint);
1327        canvas->restoreToCount(count);
1328}
1329
1330void SampleWindow::onDraw(SkCanvas* canvas) {
1331}
1332
1333#include "SkColorPriv.h"
1334
1335#if 0 // UNUSED
1336static void reverseRedAndBlue(const SkBitmap& bm) {
1337    SkASSERT(bm.config() == SkBitmap::kARGB_8888_Config);
1338    uint8_t* p = (uint8_t*)bm.getPixels();
1339    uint8_t* stop = p + bm.getSize();
1340    while (p < stop) {
1341        // swap red/blue (to go from ARGB(int) to RGBA(memory) and premultiply
1342        unsigned scale = SkAlpha255To256(p[3]);
1343        unsigned r = p[2];
1344        unsigned b = p[0];
1345        p[0] = SkAlphaMul(r, scale);
1346        p[1] = SkAlphaMul(p[1], scale);
1347        p[2] = SkAlphaMul(b, scale);
1348        p += 4;
1349    }
1350}
1351#endif
1352
1353void SampleWindow::saveToPdf()
1354{
1355    fSaveToPdf = true;
1356    this->inval(NULL);
1357}
1358
1359SkCanvas* SampleWindow::beforeChildren(SkCanvas* canvas) {
1360    if (fSaveToPdf) {
1361        const SkBitmap& bmp = canvas->getDevice()->accessBitmap(false);
1362        SkISize size = SkISize::Make(bmp.width(), bmp.height());
1363        SkPDFDevice* pdfDevice = new SkPDFDevice(size, size,
1364                canvas->getTotalMatrix());
1365        fPdfCanvas = new SkCanvas(pdfDevice);
1366        pdfDevice->unref();
1367        canvas = fPdfCanvas;
1368    } else if (kPicture_DeviceType == fDeviceType) {
1369        fPicture = new SkPicture;
1370        canvas = fPicture->beginRecording(9999, 9999);
1371    } else {
1372#if SK_SUPPORT_GPU
1373        if (kNullGPU_DeviceType != fDeviceType)
1374#endif
1375        {
1376            canvas = this->INHERITED::beforeChildren(canvas);
1377        }
1378    }
1379
1380    if (fUseClip) {
1381        canvas->drawColor(0xFFFF88FF);
1382        canvas->clipPath(fClipPath, SkRegion::kIntersect_Op, true);
1383    }
1384
1385    return canvas;
1386}
1387
1388static void paint_rgn(const SkBitmap& bm, const SkIRect& r,
1389                      const SkRegion& rgn) {
1390    SkCanvas    canvas(bm);
1391    SkRegion    inval(rgn);
1392
1393    inval.translate(r.fLeft, r.fTop);
1394    canvas.clipRegion(inval);
1395    canvas.drawColor(0xFFFF8080);
1396}
1397#include "SkData.h"
1398void SampleWindow::afterChildren(SkCanvas* orig) {
1399    if (fSaveToPdf) {
1400        fSaveToPdf = false;
1401        if (fShowZoomer) {
1402            showZoomer(fPdfCanvas);
1403        }
1404        SkString name;
1405        name.printf("%s.pdf", this->getTitle());
1406        SkPDFDocument doc;
1407        SkPDFDevice* device = static_cast<SkPDFDevice*>(fPdfCanvas->getDevice());
1408        doc.appendPage(device);
1409#ifdef SK_BUILD_FOR_ANDROID
1410        name.prepend("/sdcard/");
1411#endif
1412
1413#ifdef SK_BUILD_FOR_IOS
1414        SkDynamicMemoryWStream mstream;
1415        doc.emitPDF(&mstream);
1416        fPDFData = mstream.copyToData();
1417#endif
1418        SkFILEWStream stream(name.c_str());
1419        if (stream.isValid()) {
1420            doc.emitPDF(&stream);
1421            const char* desc = "File saved from Skia SampleApp";
1422            this->onPDFSaved(this->getTitle(), desc, name.c_str());
1423        }
1424
1425        delete fPdfCanvas;
1426        fPdfCanvas = NULL;
1427
1428        // We took over the draw calls in order to create the PDF, so we need
1429        // to redraw.
1430        this->inval(NULL);
1431        return;
1432    }
1433
1434    if (fRequestGrabImage) {
1435        fRequestGrabImage = false;
1436
1437        SkBaseDevice* device = orig->getDevice();
1438        SkBitmap bmp;
1439        if (device->accessBitmap(false).copyTo(&bmp, SkBitmap::kARGB_8888_Config)) {
1440            static int gSampleGrabCounter;
1441            SkString name;
1442            name.printf("sample_grab_%d.png", gSampleGrabCounter++);
1443            SkImageEncoder::EncodeFile(name.c_str(), bmp,
1444                                       SkImageEncoder::kPNG_Type, 100);
1445        }
1446    }
1447
1448    if (kPicture_DeviceType == fDeviceType) {
1449        if (true) {
1450            SkPicture* pict = new SkPicture(*fPicture);
1451            fPicture->unref();
1452            this->installDrawFilter(orig);
1453            orig->drawPicture(*pict);
1454            pict->unref();
1455        } else if (true) {
1456            SkDynamicMemoryWStream ostream;
1457            fPicture->serialize(&ostream);
1458            fPicture->unref();
1459
1460            SkAutoDataUnref data(ostream.copyToData());
1461            SkMemoryStream istream(data->data(), data->size());
1462            SkAutoTUnref<SkPicture> pict(SkPicture::CreateFromStream(&istream));
1463            if (pict.get() != NULL) {
1464                orig->drawPicture(*pict.get());
1465            }
1466        } else {
1467            fPicture->draw(orig);
1468            fPicture->unref();
1469        }
1470        fPicture = NULL;
1471    }
1472
1473    // Do this after presentGL and other finishing, rather than in afterChild
1474    if (fMeasureFPS && fMeasureFPS_StartTime) {
1475        fMeasureFPS_Time += SkTime::GetMSecs() - fMeasureFPS_StartTime;
1476    }
1477
1478    //    if ((fScrollTestX | fScrollTestY) != 0)
1479    if (false) {
1480        const SkBitmap& bm = orig->getDevice()->accessBitmap(true);
1481        int dx = fScrollTestX * 7;
1482        int dy = fScrollTestY * 7;
1483        SkIRect r;
1484        SkRegion inval;
1485
1486        r.set(50, 50, 50+100, 50+100);
1487        bm.scrollRect(&r, dx, dy, &inval);
1488        paint_rgn(bm, r, inval);
1489    }
1490}
1491
1492void SampleWindow::beforeChild(SkView* child, SkCanvas* canvas) {
1493    if (fRotate) {
1494        fRotateAnimTime += SampleCode::GetAnimSecondsDelta();
1495
1496        SkScalar cx = this->width() / 2;
1497        SkScalar cy = this->height() / 2;
1498        canvas->translate(cx, cy);
1499        canvas->rotate(fRotateAnimTime * 10);
1500        canvas->translate(-cx, -cy);
1501    }
1502
1503    if (fPerspAnim) {
1504        fPerspAnimTime += SampleCode::GetAnimSecondsDelta();
1505
1506        static const SkScalar gAnimPeriod = 10 * SK_Scalar1;
1507        static const SkScalar gAnimMag = SK_Scalar1 / 1000;
1508        SkScalar t = SkScalarMod(fPerspAnimTime, gAnimPeriod);
1509        if (SkScalarFloorToInt(SkScalarDiv(fPerspAnimTime, gAnimPeriod)) & 0x1) {
1510            t = gAnimPeriod - t;
1511        }
1512        t = 2 * t - gAnimPeriod;
1513        t = SkScalarMul(SkScalarDiv(t, gAnimPeriod), gAnimMag);
1514        SkMatrix m;
1515        m.reset();
1516        m.setPerspY(t);
1517        canvas->concat(m);
1518    }
1519
1520    this->installDrawFilter(canvas);
1521
1522    if (fMeasureFPS) {
1523        if (SampleView::SetRepeatDraw(child, FPS_REPEAT_COUNT)) {
1524            fMeasureFPS_StartTime = SkTime::GetMSecs();
1525        }
1526    } else {
1527        (void)SampleView::SetRepeatDraw(child, 1);
1528    }
1529    if (fPerspAnim || fRotate) {
1530        this->inval(NULL);
1531    }
1532}
1533
1534void SampleWindow::afterChild(SkView* child, SkCanvas* canvas) {
1535    canvas->setDrawFilter(NULL);
1536}
1537
1538static SkBitmap::Config gConfigCycle[] = {
1539    SkBitmap::kNo_Config,           // none -> none
1540    SkBitmap::kNo_Config,           // a1 -> none
1541    SkBitmap::kNo_Config,           // a8 -> none
1542    SkBitmap::kNo_Config,           // index8 -> none
1543    SkBitmap::kARGB_4444_Config,    // 565 -> 4444
1544    SkBitmap::kARGB_8888_Config,    // 4444 -> 8888
1545    SkBitmap::kRGB_565_Config       // 8888 -> 565
1546};
1547
1548static SkBitmap::Config cycle_configs(SkBitmap::Config c) {
1549    return gConfigCycle[c];
1550}
1551
1552void SampleWindow::changeZoomLevel(float delta) {
1553    fZoomLevel += SkFloatToScalar(delta);
1554    if (fZoomLevel > 0) {
1555        fZoomLevel = SkMinScalar(fZoomLevel, MAX_ZOOM_LEVEL);
1556        fZoomScale = fZoomLevel + SK_Scalar1;
1557    } else if (fZoomLevel < 0) {
1558        fZoomLevel = SkMaxScalar(fZoomLevel, MIN_ZOOM_LEVEL);
1559        fZoomScale = SK_Scalar1 / (SK_Scalar1 - fZoomLevel);
1560    } else {
1561        fZoomScale = SK_Scalar1;
1562    }
1563    this->updateMatrix();
1564}
1565
1566void SampleWindow::updateMatrix(){
1567    SkMatrix m;
1568    m.reset();
1569    if (fZoomLevel) {
1570        SkPoint center;
1571        //m = this->getLocalMatrix();//.invert(&m);
1572        m.mapXY(fZoomCenterX, fZoomCenterY, &center);
1573        SkScalar cx = center.fX;
1574        SkScalar cy = center.fY;
1575
1576        m.setTranslate(-cx, -cy);
1577        m.postScale(fZoomScale, fZoomScale);
1578        m.postTranslate(cx, cy);
1579    }
1580
1581    if (fFlipAxis) {
1582        m.preTranslate(fZoomCenterX, fZoomCenterY);
1583        if (fFlipAxis & kFlipAxis_X) {
1584            m.preScale(-SK_Scalar1, SK_Scalar1);
1585        }
1586        if (fFlipAxis & kFlipAxis_Y) {
1587            m.preScale(SK_Scalar1, -SK_Scalar1);
1588        }
1589        m.preTranslate(-fZoomCenterX, -fZoomCenterY);
1590        //canvas->concat(m);
1591    }
1592    // Apply any gesture matrix
1593    m.preConcat(fGesture.localM());
1594    m.preConcat(fGesture.globalM());
1595
1596    this->setLocalMatrix(m);
1597
1598    this->updateTitle();
1599    this->inval(NULL);
1600}
1601bool SampleWindow::previousSample() {
1602    fCurrIndex = (fCurrIndex - 1 + fSamples.count()) % fSamples.count();
1603    this->loadView(create_transition(curr_view(this), (*fSamples[fCurrIndex])(),
1604                                     fTransitionPrev));
1605    return true;
1606}
1607
1608bool SampleWindow::nextSample() {
1609    fCurrIndex = (fCurrIndex + 1) % fSamples.count();
1610    this->loadView(create_transition(curr_view(this), (*fSamples[fCurrIndex])(),
1611                                     fTransitionNext));
1612    return true;
1613}
1614
1615bool SampleWindow::goToSample(int i) {
1616    fCurrIndex = (i) % fSamples.count();
1617    this->loadView(create_transition(curr_view(this),(*fSamples[fCurrIndex])(), 6));
1618    return true;
1619}
1620
1621SkString SampleWindow::getSampleTitle(int i) {
1622    return ::getSampleTitle(fSamples[i]);
1623}
1624
1625int SampleWindow::sampleCount() {
1626    return fSamples.count();
1627}
1628
1629void SampleWindow::showOverview() {
1630    this->loadView(create_transition(curr_view(this),
1631                                     create_overview(fSamples.count(), fSamples.begin()),
1632                                     4));
1633}
1634
1635void SampleWindow::installDrawFilter(SkCanvas* canvas) {
1636    canvas->setDrawFilter(new FlagsDrawFilter(fLCDState, fAAState, fFilterState, fSubpixelState,
1637                                              fHintingState))->unref();
1638}
1639
1640void SampleWindow::postAnimatingEvent() {
1641    if (fAnimating) {
1642        (new SkEvent(ANIMATING_EVENTTYPE, this->getSinkID()))->postDelay(ANIMATING_DELAY);
1643    }
1644}
1645
1646bool SampleWindow::onEvent(const SkEvent& evt) {
1647    if (evt.isType(gUpdateWindowTitleEvtName)) {
1648        this->updateTitle();
1649        return true;
1650    }
1651    if (evt.isType(ANIMATING_EVENTTYPE)) {
1652        if (fAnimating) {
1653            this->nextSample();
1654            this->postAnimatingEvent();
1655        }
1656        return true;
1657    }
1658    if (evt.isType("replace-transition-view")) {
1659        this->loadView((SkView*)SkEventSink::FindSink(evt.getFast32()));
1660        return true;
1661    }
1662    if (evt.isType("set-curr-index")) {
1663        this->goToSample(evt.getFast32());
1664        return true;
1665    }
1666    if (isInvalEvent(evt)) {
1667        this->inval(NULL);
1668        return true;
1669    }
1670    int selected = -1;
1671    if (SkOSMenu::FindListIndex(evt, "Device Type", &selected)) {
1672        this->setDeviceType((DeviceType)selected);
1673        return true;
1674    }
1675    if (SkOSMenu::FindTriState(evt, "Pipe", &fPipeState)) {
1676#ifdef PIPE_NET
1677        if (!fPipeState != SkOSMenu::kOnState)
1678            gServer.disconnectAll();
1679#endif
1680        (void)SampleView::SetUsePipe(curr_view(this), fPipeState);
1681        this->updateTitle();
1682        this->inval(NULL);
1683        return true;
1684    }
1685    if (SkOSMenu::FindTriState(evt, "Tiling", &fTilingState)) {
1686        int nx = 1, ny = 1;
1687        switch (fTilingState) {
1688            case SkOSMenu::kOffState:   nx = 1; ny = 1; break;
1689            case SkOSMenu::kMixedState: nx = 1; ny = 16; break;
1690            case SkOSMenu::kOnState:    nx = 4; ny = 4; break;
1691        }
1692        fTileCount.set(nx, ny);
1693        this->inval(NULL);
1694        return true;
1695    }
1696    if (SkOSMenu::FindSwitchState(evt, "Slide Show", NULL)) {
1697        this->toggleSlideshow();
1698        return true;
1699    }
1700    if (SkOSMenu::FindTriState(evt, "AA", &fAAState) ||
1701        SkOSMenu::FindTriState(evt, "LCD", &fLCDState) ||
1702        SkOSMenu::FindTriState(evt, "Filter", &fFilterState) ||
1703        SkOSMenu::FindTriState(evt, "Subpixel", &fSubpixelState) ||
1704        SkOSMenu::FindListIndex(evt, "Hinting", &fHintingState) ||
1705        SkOSMenu::FindSwitchState(evt, "Clip", &fUseClip) ||
1706        SkOSMenu::FindSwitchState(evt, "Zoomer", &fShowZoomer) ||
1707        SkOSMenu::FindSwitchState(evt, "Magnify", &fMagnify) ||
1708        SkOSMenu::FindListIndex(evt, "Transition-Next", &fTransitionNext) ||
1709        SkOSMenu::FindListIndex(evt, "Transition-Prev", &fTransitionPrev)) {
1710        this->inval(NULL);
1711        this->updateTitle();
1712        return true;
1713    }
1714    if (SkOSMenu::FindSwitchState(evt, "Flip X", NULL)) {
1715        fFlipAxis ^= kFlipAxis_X;
1716        this->updateMatrix();
1717        return true;
1718    }
1719    if (SkOSMenu::FindSwitchState(evt, "Flip Y", NULL)) {
1720        fFlipAxis ^= kFlipAxis_Y;
1721        this->updateMatrix();
1722        return true;
1723    }
1724    if (SkOSMenu::FindAction(evt,"Save to PDF")) {
1725        this->saveToPdf();
1726        return true;
1727    }
1728    return this->INHERITED::onEvent(evt);
1729}
1730
1731bool SampleWindow::onQuery(SkEvent* query) {
1732    if (query->isType("get-slide-count")) {
1733        query->setFast32(fSamples.count());
1734        return true;
1735    }
1736    if (query->isType("get-slide-title")) {
1737        SkView* view = (*fSamples[query->getFast32()])();
1738        SkEvent evt(gTitleEvtName);
1739        if (view->doQuery(&evt)) {
1740            query->setString("title", evt.findString(gTitleEvtName));
1741        }
1742        SkSafeUnref(view);
1743        return true;
1744    }
1745    if (query->isType("use-fast-text")) {
1746        SkEvent evt(gFastTextEvtName);
1747        return curr_view(this)->doQuery(&evt);
1748    }
1749    if (query->isType("ignore-window-bitmap")) {
1750        query->setFast32(this->getGrContext() != NULL);
1751        return true;
1752    }
1753    return this->INHERITED::onQuery(query);
1754}
1755
1756#if 0 // UNUSED
1757static void cleanup_for_filename(SkString* name) {
1758    char* str = name->writable_str();
1759    for (size_t i = 0; i < name->size(); i++) {
1760        switch (str[i]) {
1761            case ':': str[i] = '-'; break;
1762            case '/': str[i] = '-'; break;
1763            case ' ': str[i] = '_'; break;
1764            default: break;
1765        }
1766    }
1767}
1768#endif
1769
1770//extern bool gIgnoreFastBlurRect;
1771
1772bool SampleWindow::onHandleChar(SkUnichar uni) {
1773    {
1774        SkView* view = curr_view(this);
1775        if (view) {
1776            SkEvent evt(gCharEvtName);
1777            evt.setFast32(uni);
1778            if (view->doQuery(&evt)) {
1779                return true;
1780            }
1781        }
1782    }
1783
1784    int dx = 0xFF;
1785    int dy = 0xFF;
1786
1787    switch (uni) {
1788        case '5': dx =  0; dy =  0; break;
1789        case '8': dx =  0; dy = -1; break;
1790        case '6': dx =  1; dy =  0; break;
1791        case '2': dx =  0; dy =  1; break;
1792        case '4': dx = -1; dy =  0; break;
1793        case '7': dx = -1; dy = -1; break;
1794        case '9': dx =  1; dy = -1; break;
1795        case '3': dx =  1; dy =  1; break;
1796        case '1': dx = -1; dy =  1; break;
1797
1798        default:
1799            break;
1800    }
1801
1802    if (0xFF != dx && 0xFF != dy) {
1803        if ((dx | dy) == 0) {
1804            fScrollTestX = fScrollTestY = 0;
1805        } else {
1806            fScrollTestX += dx;
1807            fScrollTestY += dy;
1808        }
1809        this->inval(NULL);
1810        return true;
1811    }
1812
1813    switch (uni) {
1814        case 'b':
1815            {
1816            postEventToSink(SkNEW_ARGS(SkEvent, ("PictFileView::toggleBBox")), curr_view(this));
1817            this->updateTitle();
1818            this->inval(NULL);
1819            break;
1820            }
1821        case 'B':
1822//            gIgnoreFastBlurRect = !gIgnoreFastBlurRect;
1823            this->inval(NULL);
1824            break;
1825
1826        case 'f':
1827            // only
1828            toggleFPS();
1829            break;
1830        case 'g':
1831            fRequestGrabImage = true;
1832            this->inval(NULL);
1833            break;
1834        case 'G':
1835            gShowGMBounds = !gShowGMBounds;
1836            postEventToSink(GMSampleView::NewShowSizeEvt(gShowGMBounds),
1837                            curr_view(this));
1838            this->inval(NULL);
1839            break;
1840        case 'i':
1841            this->zoomIn();
1842            break;
1843        case 'o':
1844            this->zoomOut();
1845            break;
1846        case 'r':
1847            fRotate = !fRotate;
1848            fRotateAnimTime = 0;
1849            this->inval(NULL);
1850            this->updateTitle();
1851            return true;
1852        case 'k':
1853            fPerspAnim = !fPerspAnim;
1854            this->inval(NULL);
1855            this->updateTitle();
1856            return true;
1857#if SK_SUPPORT_GPU
1858        case '\\':
1859            this->setDeviceType(kNullGPU_DeviceType);
1860            this->inval(NULL);
1861            this->updateTitle();
1862            return true;
1863        case 'p':
1864            {
1865                GrContext* grContext = this->getGrContext();
1866                if (grContext) {
1867                    size_t cacheBytes = grContext->getGpuTextureCacheBytes();
1868                    grContext->freeGpuResources();
1869                    SkDebugf("Purged %d bytes from the GPU resource cache.\n",
1870                             cacheBytes);
1871                }
1872            }
1873            return true;
1874#endif
1875        default:
1876            break;
1877    }
1878
1879    if (fAppMenu->handleKeyEquivalent(uni)|| fSlideMenu->handleKeyEquivalent(uni)) {
1880        this->onUpdateMenu(fAppMenu);
1881        this->onUpdateMenu(fSlideMenu);
1882        return true;
1883    }
1884    return this->INHERITED::onHandleChar(uni);
1885}
1886
1887void SampleWindow::setDeviceType(DeviceType type) {
1888    if (type == fDeviceType)
1889        return;
1890
1891    fDevManager->tearDownBackend(this);
1892
1893    fDeviceType = type;
1894
1895    fDevManager->setUpBackend(this, fMSAASampleCount);
1896
1897    this->updateTitle();
1898    this->inval(NULL);
1899}
1900
1901void SampleWindow::toggleSlideshow() {
1902    fAnimating = !fAnimating;
1903    this->postAnimatingEvent();
1904    this->updateTitle();
1905}
1906
1907void SampleWindow::toggleRendering() {
1908    this->setDeviceType(cycle_devicetype(fDeviceType));
1909    this->updateTitle();
1910    this->inval(NULL);
1911}
1912
1913void SampleWindow::toggleFPS() {
1914    fMeasureFPS = !fMeasureFPS;
1915    this->updateTitle();
1916    this->inval(NULL);
1917}
1918
1919#include "SkDumpCanvas.h"
1920
1921bool SampleWindow::onHandleKey(SkKey key) {
1922    {
1923        SkView* view = curr_view(this);
1924        if (view) {
1925            SkEvent evt(gKeyEvtName);
1926            evt.setFast32(key);
1927            if (view->doQuery(&evt)) {
1928                return true;
1929            }
1930        }
1931    }
1932    switch (key) {
1933        case kRight_SkKey:
1934            if (this->nextSample()) {
1935                return true;
1936            }
1937            break;
1938        case kLeft_SkKey:
1939            if (this->previousSample()) {
1940                return true;
1941            }
1942            return true;
1943        case kUp_SkKey:
1944            if (USE_ARROWS_FOR_ZOOM) {
1945                this->changeZoomLevel(1.f / 32.f);
1946            } else {
1947                fNClip = !fNClip;
1948                this->inval(NULL);
1949                this->updateTitle();
1950            }
1951            return true;
1952        case kDown_SkKey:
1953            if (USE_ARROWS_FOR_ZOOM) {
1954                this->changeZoomLevel(-1.f / 32.f);
1955            } else {
1956                this->setConfig(cycle_configs(this->getBitmap().config()));
1957                this->updateTitle();
1958            }
1959            return true;
1960        case kOK_SkKey: {
1961            SkString title;
1962            if (curr_title(this, &title)) {
1963                writeTitleToPrefs(title.c_str());
1964            }
1965            return true;
1966        }
1967        case kBack_SkKey:
1968            this->showOverview();
1969            return true;
1970        default:
1971            break;
1972    }
1973    return this->INHERITED::onHandleKey(key);
1974}
1975
1976///////////////////////////////////////////////////////////////////////////////
1977
1978static const char gGestureClickType[] = "GestureClickType";
1979
1980bool SampleWindow::onDispatchClick(int x, int y, Click::State state,
1981        void* owner, unsigned modi) {
1982    if (Click::kMoved_State == state) {
1983        updatePointer(x, y);
1984    }
1985    int w = SkScalarRound(this->width());
1986    int h = SkScalarRound(this->height());
1987
1988    // check for the resize-box
1989    if (w - x < 16 && h - y < 16) {
1990        return false;   // let the OS handle the click
1991    }
1992    else if (fMagnify) {
1993        //it's only necessary to update the drawing if there's a click
1994        this->inval(NULL);
1995        return false; //prevent dragging while magnify is enabled
1996    } else {
1997        // capture control+option, and trigger debugger
1998        if ((modi & kControl_SkModifierKey) && (modi & kOption_SkModifierKey)) {
1999            if (Click::kDown_State == state) {
2000                SkEvent evt("debug-hit-test");
2001                evt.setS32("debug-hit-test-x", x);
2002                evt.setS32("debug-hit-test-y", y);
2003                curr_view(this)->doEvent(evt);
2004            }
2005            return true;
2006        } else {
2007            return this->INHERITED::onDispatchClick(x, y, state, owner, modi);
2008        }
2009    }
2010}
2011
2012class GestureClick : public SkView::Click {
2013public:
2014    GestureClick(SkView* target) : SkView::Click(target) {
2015        this->setType(gGestureClickType);
2016    }
2017
2018    static bool IsGesture(Click* click) {
2019        return click->isType(gGestureClickType);
2020    }
2021};
2022
2023SkView::Click* SampleWindow::onFindClickHandler(SkScalar x, SkScalar y,
2024                                                unsigned modi) {
2025    return new GestureClick(this);
2026}
2027
2028bool SampleWindow::onClick(Click* click) {
2029    if (GestureClick::IsGesture(click)) {
2030        float x = static_cast<float>(click->fICurr.fX);
2031        float y = static_cast<float>(click->fICurr.fY);
2032
2033        switch (click->fState) {
2034            case SkView::Click::kDown_State:
2035                fGesture.touchBegin(click->fOwner, x, y);
2036                break;
2037            case SkView::Click::kMoved_State:
2038                fGesture.touchMoved(click->fOwner, x, y);
2039                this->updateMatrix();
2040                break;
2041            case SkView::Click::kUp_State:
2042                fGesture.touchEnd(click->fOwner);
2043                this->updateMatrix();
2044                break;
2045        }
2046        return true;
2047    }
2048    return false;
2049}
2050
2051///////////////////////////////////////////////////////////////////////////////
2052
2053void SampleWindow::loadView(SkView* view) {
2054    SkView::F2BIter iter(this);
2055    SkView* prev = iter.next();
2056    if (prev) {
2057        prev->detachFromParent();
2058    }
2059
2060    view->setVisibleP(true);
2061    view->setClipToBounds(false);
2062    this->attachChildToFront(view)->unref();
2063    view->setSize(this->width(), this->height());
2064
2065    //repopulate the slide menu when a view is loaded
2066    fSlideMenu->reset();
2067
2068    (void)SampleView::SetUsePipe(view, fPipeState);
2069    if (SampleView::IsSampleView(view))
2070        ((SampleView*)view)->requestMenu(fSlideMenu);
2071    this->onUpdateMenu(fSlideMenu);
2072    this->updateTitle();
2073}
2074
2075static const char* gConfigNames[] = {
2076    "unknown config",
2077    "A1",
2078    "A8",
2079    "Index8",
2080    "565",
2081    "4444",
2082    "8888"
2083};
2084
2085static const char* configToString(SkBitmap::Config c) {
2086    return gConfigNames[c];
2087}
2088
2089static const char* gDeviceTypePrefix[] = {
2090    "raster: ",
2091    "picture: ",
2092#if SK_SUPPORT_GPU
2093    "opengl: ",
2094#if SK_ANGLE
2095    "angle: ",
2096#endif // SK_ANGLE
2097    "null-gl: "
2098#endif // SK_SUPPORT_GPU
2099};
2100SK_COMPILE_ASSERT(SK_ARRAY_COUNT(gDeviceTypePrefix) == SampleWindow::kDeviceTypeCnt,
2101                  array_size_mismatch);
2102
2103static const char* trystate_str(SkOSMenu::TriState state,
2104                                const char trueStr[], const char falseStr[]) {
2105    if (SkOSMenu::kOnState == state) {
2106        return trueStr;
2107    } else if (SkOSMenu::kOffState == state) {
2108        return falseStr;
2109    }
2110    return NULL;
2111}
2112
2113void SampleWindow::updateTitle() {
2114    SkView* view = curr_view(this);
2115
2116    SkString title;
2117    if (!curr_title(this, &title)) {
2118        title.set("<unknown>");
2119    }
2120
2121    title.prepend(gDeviceTypePrefix[fDeviceType]);
2122
2123    title.prepend(" ");
2124    title.prepend(configToString(this->getBitmap().config()));
2125
2126    if (fAnimating) {
2127        title.prepend("<A> ");
2128    }
2129    if (fRotate) {
2130        title.prepend("<R> ");
2131    }
2132    if (fNClip) {
2133        title.prepend("<C> ");
2134    }
2135    if (fPerspAnim) {
2136        title.prepend("<K> ");
2137    }
2138
2139    title.prepend(trystate_str(fLCDState, "LCD ", "lcd "));
2140    title.prepend(trystate_str(fAAState, "AA ", "aa "));
2141    title.prepend(trystate_str(fFilterState, "N ", "n "));
2142    title.prepend(trystate_str(fSubpixelState, "S ", "s "));
2143    title.prepend(fFlipAxis & kFlipAxis_X ? "X " : NULL);
2144    title.prepend(fFlipAxis & kFlipAxis_Y ? "Y " : NULL);
2145    title.prepend(gHintingStates[fHintingState].label);
2146
2147    if (fZoomLevel) {
2148        title.prependf("{%.2f} ", SkScalarToFloat(fZoomLevel));
2149    }
2150
2151    if (fMeasureFPS) {
2152        title.appendf(" %8.3f ms", fMeasureFPS_Time / (float)FPS_REPEAT_COUNT);
2153    }
2154    if (SampleView::IsSampleView(view)) {
2155        switch (fPipeState) {
2156            case SkOSMenu::kOnState:
2157                title.prepend("<Pipe> ");
2158                break;
2159            case SkOSMenu::kMixedState:
2160                title.prepend("<Tiled Pipe> ");
2161                break;
2162
2163            default:
2164                break;
2165        }
2166        title.prepend("! ");
2167    }
2168
2169#if SK_SUPPORT_GPU
2170    if (IsGpuDeviceType(fDeviceType) &&
2171        NULL != fDevManager &&
2172        fDevManager->getGrRenderTarget() &&
2173        fDevManager->getGrRenderTarget()->numSamples() > 0) {
2174        title.appendf(" [MSAA: %d]",
2175                       fDevManager->getGrRenderTarget()->numSamples());
2176    }
2177#endif
2178
2179    this->setTitle(title.c_str());
2180}
2181
2182void SampleWindow::onSizeChange() {
2183    this->INHERITED::onSizeChange();
2184
2185    SkView::F2BIter iter(this);
2186    SkView* view = iter.next();
2187    view->setSize(this->width(), this->height());
2188
2189    // rebuild our clippath
2190    {
2191        const SkScalar W = this->width();
2192        const SkScalar H = this->height();
2193
2194        fClipPath.reset();
2195#if 0
2196        for (SkScalar y = SK_Scalar1; y < H; y += SkIntToScalar(32)) {
2197            SkRect r;
2198            r.set(SK_Scalar1, y, SkIntToScalar(30), y + SkIntToScalar(30));
2199            for (; r.fLeft < W; r.offset(SkIntToScalar(32), 0))
2200                fClipPath.addRect(r);
2201        }
2202#else
2203        SkRect r;
2204        r.set(0, 0, W, H);
2205        fClipPath.addRect(r, SkPath::kCCW_Direction);
2206        r.set(W/4, H/4, W*3/4, H*3/4);
2207        fClipPath.addRect(r, SkPath::kCW_Direction);
2208#endif
2209    }
2210
2211    fZoomCenterX = SkScalarHalf(this->width());
2212    fZoomCenterY = SkScalarHalf(this->height());
2213
2214#ifdef SK_BUILD_FOR_ANDROID
2215    // FIXME: The first draw after a size change does not work on Android, so
2216    // we post an invalidate.
2217    this->postInvalDelay();
2218#endif
2219    this->updateTitle();    // to refresh our config
2220    fDevManager->windowSizeChanged(this);
2221}
2222
2223///////////////////////////////////////////////////////////////////////////////
2224
2225static const char is_sample_view_tag[] = "sample-is-sample-view";
2226static const char repeat_count_tag[] = "sample-set-repeat-count";
2227static const char set_use_pipe_tag[] = "sample-set-use-pipe";
2228
2229bool SampleView::IsSampleView(SkView* view) {
2230    SkEvent evt(is_sample_view_tag);
2231    return view->doQuery(&evt);
2232}
2233
2234bool SampleView::SetRepeatDraw(SkView* view, int count) {
2235    SkEvent evt(repeat_count_tag);
2236    evt.setFast32(count);
2237    return view->doEvent(evt);
2238}
2239
2240bool SampleView::SetUsePipe(SkView* view, SkOSMenu::TriState state) {
2241    SkEvent evt;
2242    evt.setS32(set_use_pipe_tag, state);
2243    return view->doEvent(evt);
2244}
2245
2246bool SampleView::onEvent(const SkEvent& evt) {
2247    if (evt.isType(repeat_count_tag)) {
2248        fRepeatCount = evt.getFast32();
2249        return true;
2250    }
2251
2252    int32_t pipeHolder;
2253    if (evt.findS32(set_use_pipe_tag, &pipeHolder)) {
2254        fPipeState = static_cast<SkOSMenu::TriState>(pipeHolder);
2255        return true;
2256    }
2257
2258    if (evt.isType("debug-hit-test")) {
2259        fDebugHitTest = true;
2260        evt.findS32("debug-hit-test-x", &fDebugHitTestLoc.fX);
2261        evt.findS32("debug-hit-test-y", &fDebugHitTestLoc.fY);
2262        this->inval(NULL);
2263        return true;
2264    }
2265
2266    return this->INHERITED::onEvent(evt);
2267}
2268
2269bool SampleView::onQuery(SkEvent* evt) {
2270    if (evt->isType(is_sample_view_tag)) {
2271        return true;
2272    }
2273    return this->INHERITED::onQuery(evt);
2274}
2275
2276
2277class SimplePC : public SkGPipeController {
2278public:
2279    SimplePC(SkCanvas* target);
2280    ~SimplePC();
2281
2282    virtual void* requestBlock(size_t minRequest, size_t* actual);
2283    virtual void notifyWritten(size_t bytes);
2284
2285private:
2286    SkGPipeReader   fReader;
2287    void*           fBlock;
2288    size_t          fBlockSize;
2289    size_t          fBytesWritten;
2290    int             fAtomsWritten;
2291    SkGPipeReader::Status   fStatus;
2292
2293    size_t        fTotalWritten;
2294};
2295
2296SimplePC::SimplePC(SkCanvas* target) : fReader(target) {
2297    fBlock = NULL;
2298    fBlockSize = fBytesWritten = 0;
2299    fStatus = SkGPipeReader::kDone_Status;
2300    fTotalWritten = 0;
2301    fAtomsWritten = 0;
2302    fReader.setBitmapDecoder(&SkImageDecoder::DecodeMemory);
2303}
2304
2305SimplePC::~SimplePC() {
2306//    SkASSERT(SkGPipeReader::kDone_Status == fStatus);
2307    if (fTotalWritten) {
2308        SkDebugf("--- %d bytes %d atoms, status %d\n", fTotalWritten,
2309                 fAtomsWritten, fStatus);
2310#ifdef  PIPE_FILE
2311        //File is open in append mode
2312        FILE* f = fopen(FILE_PATH, "ab");
2313        SkASSERT(f != NULL);
2314        fwrite((const char*)fBlock + fBytesWritten, 1, bytes, f);
2315        fclose(f);
2316#endif
2317#ifdef PIPE_NET
2318        if (fAtomsWritten > 1 && fTotalWritten > 4) { //ignore done
2319            gServer.acceptConnections();
2320            gServer.writePacket(fBlock, fTotalWritten);
2321        }
2322#endif
2323    }
2324    sk_free(fBlock);
2325}
2326
2327void* SimplePC::requestBlock(size_t minRequest, size_t* actual) {
2328    sk_free(fBlock);
2329
2330    fBlockSize = minRequest * 4;
2331    fBlock = sk_malloc_throw(fBlockSize);
2332    fBytesWritten = 0;
2333    *actual = fBlockSize;
2334    return fBlock;
2335}
2336
2337void SimplePC::notifyWritten(size_t bytes) {
2338    SkASSERT(fBytesWritten + bytes <= fBlockSize);
2339    fStatus = fReader.playback((const char*)fBlock + fBytesWritten, bytes);
2340    SkASSERT(SkGPipeReader::kError_Status != fStatus);
2341    fBytesWritten += bytes;
2342    fTotalWritten += bytes;
2343
2344    fAtomsWritten += 1;
2345}
2346
2347void SampleView::draw(SkCanvas* canvas) {
2348    if (SkOSMenu::kOffState == fPipeState) {
2349        this->INHERITED::draw(canvas);
2350    } else {
2351        SkGPipeWriter writer;
2352        SimplePC controller(canvas);
2353        TiledPipeController tc(canvas->getDevice()->accessBitmap(false),
2354                               &SkImageDecoder::DecodeMemory,
2355                               &canvas->getTotalMatrix());
2356        SkGPipeController* pc;
2357        if (SkOSMenu::kMixedState == fPipeState) {
2358            pc = &tc;
2359        } else {
2360            pc = &controller;
2361        }
2362        uint32_t flags = SkGPipeWriter::kCrossProcess_Flag;
2363
2364        canvas = writer.startRecording(pc, flags);
2365        //Must draw before controller goes out of scope and sends data
2366        this->INHERITED::draw(canvas);
2367        //explicitly end recording to ensure writer is flushed before the memory
2368        //is freed in the deconstructor of the controller
2369        writer.endRecording();
2370    }
2371}
2372
2373#include "SkBounder.h"
2374
2375class DebugHitTestBounder : public SkBounder {
2376public:
2377    DebugHitTestBounder(int x, int y) {
2378        fLoc.set(x, y);
2379    }
2380
2381    virtual bool onIRect(const SkIRect& bounds) SK_OVERRIDE {
2382        if (bounds.contains(fLoc.x(), fLoc.y())) {
2383            //
2384            // Set a break-point here to see what was being drawn under
2385            // the click point (just needed a line of code to stop the debugger)
2386            //
2387            bounds.centerX();
2388        }
2389        return true;
2390    }
2391
2392private:
2393    SkIPoint fLoc;
2394    typedef SkBounder INHERITED;
2395};
2396
2397void SampleView::onDraw(SkCanvas* canvas) {
2398    this->onDrawBackground(canvas);
2399
2400    DebugHitTestBounder bounder(fDebugHitTestLoc.x(), fDebugHitTestLoc.y());
2401    if (fDebugHitTest) {
2402        canvas->setBounder(&bounder);
2403    }
2404
2405    for (int i = 0; i < fRepeatCount; i++) {
2406        SkAutoCanvasRestore acr(canvas, true);
2407        this->onDrawContent(canvas);
2408    }
2409
2410    fDebugHitTest = false;
2411    canvas->setBounder(NULL);
2412}
2413
2414void SampleView::onDrawBackground(SkCanvas* canvas) {
2415    canvas->drawColor(fBGColor);
2416}
2417
2418///////////////////////////////////////////////////////////////////////////////
2419
2420template <typename T> void SkTBSort(T array[], int count) {
2421    for (int i = 1; i < count - 1; i++) {
2422        bool didSwap = false;
2423        for (int j = count - 1; j > i; --j) {
2424            if (array[j] < array[j-1]) {
2425                T tmp(array[j-1]);
2426                array[j-1] = array[j];
2427                array[j] = tmp;
2428                didSwap = true;
2429            }
2430        }
2431        if (!didSwap) {
2432            break;
2433        }
2434    }
2435
2436    for (int k = 0; k < count - 1; k++) {
2437        SkASSERT(!(array[k+1] < array[k]));
2438    }
2439}
2440
2441#include "SkRandom.h"
2442
2443static void rand_rect(SkIRect* rect, SkRandom& rand) {
2444    int bits = 8;
2445    int shift = 32 - bits;
2446    rect->set(rand.nextU() >> shift, rand.nextU() >> shift,
2447              rand.nextU() >> shift, rand.nextU() >> shift);
2448    rect->sort();
2449}
2450
2451static void dumpRect(const SkIRect& r) {
2452    SkDebugf(" { %d, %d, %d, %d },\n",
2453             r.fLeft, r.fTop,
2454             r.fRight, r.fBottom);
2455}
2456
2457static void test_rects(const SkIRect rect[], int count) {
2458    SkRegion rgn0, rgn1;
2459
2460    for (int i = 0; i < count; i++) {
2461        rgn0.op(rect[i], SkRegion::kUnion_Op);
2462     //   dumpRect(rect[i]);
2463    }
2464    rgn1.setRects(rect, count);
2465
2466    if (rgn0 != rgn1) {
2467        SkDebugf("\n");
2468        for (int i = 0; i < count; i++) {
2469            dumpRect(rect[i]);
2470        }
2471        SkDebugf("\n");
2472    }
2473}
2474
2475static void test() {
2476    size_t i;
2477
2478    const SkIRect r0[] = {
2479        { 0, 0, 1, 1 },
2480        { 2, 2, 3, 3 },
2481    };
2482    const SkIRect r1[] = {
2483        { 0, 0, 1, 3 },
2484        { 1, 1, 2, 2 },
2485        { 2, 0, 3, 3 },
2486    };
2487    const SkIRect r2[] = {
2488        { 0, 0, 1, 2 },
2489        { 2, 1, 3, 3 },
2490        { 4, 0, 5, 1 },
2491        { 6, 0, 7, 4 },
2492    };
2493
2494    static const struct {
2495        const SkIRect* fRects;
2496        int            fCount;
2497    } gRecs[] = {
2498        { r0, SK_ARRAY_COUNT(r0) },
2499        { r1, SK_ARRAY_COUNT(r1) },
2500        { r2, SK_ARRAY_COUNT(r2) },
2501    };
2502
2503    for (i = 0; i < SK_ARRAY_COUNT(gRecs); i++) {
2504        test_rects(gRecs[i].fRects, gRecs[i].fCount);
2505    }
2506
2507    SkRandom rand;
2508    for (i = 0; i < 10000; i++) {
2509        SkRegion rgn0, rgn1;
2510
2511        const int N = 8;
2512        SkIRect rect[N];
2513        for (int j = 0; j < N; j++) {
2514            rand_rect(&rect[j], rand);
2515        }
2516        test_rects(rect, N);
2517    }
2518}
2519
2520// FIXME: this should be in a header
2521SkOSWindow* create_sk_window(void* hwnd, int argc, char** argv);
2522SkOSWindow* create_sk_window(void* hwnd, int argc, char** argv) {
2523    if (false) { // avoid bit rot, suppress warning
2524        test();
2525    }
2526    return new SampleWindow(hwnd, argc, argv, NULL);
2527}
2528
2529// FIXME: this should be in a header
2530void get_preferred_size(int* x, int* y, int* width, int* height);
2531void get_preferred_size(int* x, int* y, int* width, int* height) {
2532    *x = 10;
2533    *y = 50;
2534    *width = 640;
2535    *height = 480;
2536}
2537
2538#ifdef SK_BUILD_FOR_IOS
2539void save_args(int argc, char *argv[]) {
2540}
2541#endif
2542
2543// FIXME: this should be in a header
2544void application_init();
2545void application_init() {
2546//    setenv("ANDROID_ROOT", "../../../data", 0);
2547#ifdef SK_BUILD_FOR_MAC
2548    setenv("ANDROID_ROOT", "/android/device/data", 0);
2549#endif
2550    SkGraphics::Init();
2551    SkEvent::Init();
2552}
2553
2554// FIXME: this should be in a header
2555void application_term();
2556void application_term() {
2557    SkEvent::Term();
2558    SkGraphics::Term();
2559}
2560