SampleApp.cpp revision 1830c7aa3c4045af438fb24ee0bd22598f1bfca7 
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 "SkGpuDevice.h"
13#include "SkGraphics.h"
14#include "SkImageEncoder.h"
15#include "SkPaint.h"
16#include "SkPicture.h"
17#include "SkStream.h"
18#include "SkTime.h"
19#include "SkWindow.h"
20
21#include "SampleCode.h"
22#include "GrContext.h"
23#include "SkTypeface.h"
24
25#include "gl/GrGLInterface.h"
26#include "gl/GrGLUtil.h"
27#include "GrRenderTarget.h"
28
29#include "SkOSFile.h"
30#include "SkPDFDevice.h"
31#include "SkPDFDocument.h"
32#include "SkStream.h"
33
34extern SampleView* CreateSamplePictFileView(const char filename[]);
35
36class PictFileFactory : public SkViewFactory {
37    SkString fFilename;
38public:
39    PictFileFactory(const SkString& filename) : fFilename(filename) {}
40    virtual SkView* operator() () const SK_OVERRIDE {
41        return CreateSamplePictFileView(fFilename.c_str());
42    }
43};
44
45#define TEST_GPIPE
46
47#ifdef  TEST_GPIPE
48#define PIPE_FILEx
49#ifdef  PIPE_FILE
50#define FILE_PATH "/path/to/drawing.data"
51#endif
52
53#define PIPE_NETx
54#ifdef  PIPE_NET
55#include "SkSockets.h"
56SkTCPServer gServer;
57#endif
58
59#define DEBUGGERx
60#ifdef  DEBUGGER
61extern SkView* create_debugger(const char* data, size_t size);
62extern bool is_debugger(SkView* view);
63SkTDArray<char> gTempDataStore;
64#endif
65
66#endif
67
68#define USE_ARROWS_FOR_ZOOM true
69
70#if SK_ANGLE
71//#define DEFAULT_TO_ANGLE 1
72#else
73//#define DEFAULT_TO_GPU 1
74#endif
75
76extern SkView* create_overview(int, const SkViewFactory*[]);
77extern bool is_overview(SkView* view);
78extern SkView* create_transition(SkView*, SkView*, int);
79extern bool is_transition(SkView* view);
80
81
82#define ANIMATING_EVENTTYPE "nextSample"
83#define ANIMATING_DELAY     750
84
85#ifdef SK_DEBUG
86    #define FPS_REPEAT_MULTIPLIER   1
87#else
88    #define FPS_REPEAT_MULTIPLIER   10
89#endif
90#define FPS_REPEAT_COUNT    (10 * FPS_REPEAT_MULTIPLIER)
91
92static SampleWindow* gSampleWindow;
93
94static void postEventToSink(SkEvent* evt, SkEventSink* sink) {
95    evt->setTargetID(sink->getSinkID())->post();
96}
97
98///////////////////////////////////////////////////////////////////////////////
99
100static const char* skip_until(const char* str, const char* skip) {
101    if (!str) {
102        return NULL;
103    }
104    return strstr(str, skip);
105}
106
107static const char* skip_past(const char* str, const char* skip) {
108    const char* found = skip_until(str, skip);
109    if (!found) {
110        return NULL;
111    }
112    return found + strlen(skip);
113}
114
115static const char* gPrefFileName = "sampleapp_prefs.txt";
116
117static bool readTitleFromPrefs(SkString* title) {
118    SkFILEStream stream(gPrefFileName);
119    if (!stream.isValid()) {
120        return false;
121    }
122
123    int len = stream.getLength();
124    SkString data(len);
125    stream.read(data.writable_str(), len);
126    const char* s = data.c_str();
127
128    s = skip_past(s, "curr-slide-title");
129    s = skip_past(s, "=");
130    s = skip_past(s, "\"");
131    const char* stop = skip_until(s, "\"");
132    if (stop > s) {
133        title->set(s, stop - s);
134        return true;
135    }
136    return false;
137}
138
139static void writeTitleToPrefs(const char* title) {
140    SkFILEWStream stream(gPrefFileName);
141    SkString data;
142    data.printf("curr-slide-title = \"%s\"\n", title);
143    stream.write(data.c_str(), data.size());
144}
145
146///////////////////////////////////////////////////////////////////////////////
147
148class SampleWindow::DefaultDeviceManager : public SampleWindow::DeviceManager {
149public:
150
151    DefaultDeviceManager()
152        : fCurContext(NULL)
153        , fCurIntf(NULL)
154        , fCurRenderTarget(NULL)
155        , fBackend(kNone_BackEndType)
156        , fMSAASampleCount(0) {
157    }
158
159    virtual ~DefaultDeviceManager() {
160        SkSafeUnref(fCurContext);
161        SkSafeUnref(fCurIntf);
162        SkSafeUnref(fCurRenderTarget);
163    }
164
165    virtual void setUpBackend(SampleWindow* win, int msaaSampleCount) {
166        SkASSERT(kNone_BackEndType == fBackend);
167
168        fBackend = kNone_BackEndType;
169
170        switch (win->getDeviceType()) {
171            case kRaster_DeviceType:
172                // fallthrough
173            case kPicture_DeviceType:
174                // fallthrough
175            case kGPU_DeviceType:
176                // fallthrough
177            case kNullGPU_DeviceType:
178                // all these guys use the native backend
179                fBackend = kNativeGL_BackEndType;
180                break;
181#if SK_ANGLE
182            case kANGLE_DeviceType:
183                // ANGLE is really the only odd man out
184                fBackend = kANGLE_BackEndType;
185                break;
186#endif
187            default:
188                SkASSERT(false);
189                break;
190        }
191
192        bool result = win->attach(fBackend, msaaSampleCount);
193        if (!result) {
194            SkDebugf("Failed to initialize GL");
195            return;
196        }
197        fMSAASampleCount = msaaSampleCount;
198
199        SkASSERT(NULL == fCurIntf);
200        switch (win->getDeviceType()) {
201            case kRaster_DeviceType:
202                // fallthrough
203            case kPicture_DeviceType:
204                // fallthrough
205            case kGPU_DeviceType:
206                // all these guys use the native interface
207                fCurIntf = GrGLCreateNativeInterface();
208                break;
209#if SK_ANGLE
210            case kANGLE_DeviceType:
211                fCurIntf = GrGLCreateANGLEInterface();
212                break;
213#endif
214            case kNullGPU_DeviceType:
215                fCurIntf = GrGLCreateNullInterface();
216                break;
217            default:
218                SkASSERT(false);
219                break;
220        }
221
222        SkASSERT(NULL == fCurContext);
223        fCurContext = GrContext::Create(kOpenGL_Shaders_GrEngine,
224                                        (GrPlatform3DContext) fCurIntf);
225
226        if (NULL == fCurContext || NULL == fCurIntf) {
227            // We need some context and interface to see results
228            SkSafeUnref(fCurContext);
229            SkSafeUnref(fCurIntf);
230            SkDebugf("Failed to setup 3D");
231
232            win->detach();
233        }
234
235        // call windowSizeChanged to create the render target
236        windowSizeChanged(win);
237    }
238
239    virtual void tearDownBackend(SampleWindow *win) {
240
241        SkSafeUnref(fCurContext);
242        fCurContext = NULL;
243
244        SkSafeUnref(fCurIntf);
245        fCurIntf = NULL;
246
247        SkSafeUnref(fCurRenderTarget);
248        fCurRenderTarget = NULL;
249
250        win->detach();
251        fBackend = kNone_BackEndType;
252    }
253
254    virtual bool prepareCanvas(SampleWindow::DeviceType dType,
255                               SkCanvas* canvas,
256                               SampleWindow* win) {
257        switch (dType) {
258            case kRaster_DeviceType:
259                // fallthrough
260            case kPicture_DeviceType:
261                // fallthrough
262#if SK_ANGLE
263            case kANGLE_DeviceType:
264#endif
265                break;
266            case kGPU_DeviceType:
267            case kNullGPU_DeviceType:
268                if (fCurContext) {
269                    canvas->setDevice(new SkGpuDevice(fCurContext,
270                                                    fCurRenderTarget))->unref();
271                } else {
272                    return false;
273                }
274                break;
275            default:
276                SkASSERT(false);
277                return false;
278        }
279        return true;
280    }
281
282    virtual void publishCanvas(SampleWindow::DeviceType dType,
283                               SkCanvas* canvas,
284                               SampleWindow* win) {
285        if (fCurContext) {
286            // in case we have queued drawing calls
287            fCurContext->flush();
288
289            if (kGPU_DeviceType != dType && kNullGPU_DeviceType != 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_PM_GrPixelConfig,
295                                             bm.getPixels(),
296                                             bm.rowBytes());
297            }
298        }
299
300        win->present();
301    }
302
303    virtual void windowSizeChanged(SampleWindow* win) {
304
305        if (fCurContext) {
306            win->attach(fBackend, fMSAASampleCount);
307
308            GrPlatformRenderTargetDesc desc;
309            desc.fWidth = SkScalarRound(win->width());
310            desc.fHeight = SkScalarRound(win->height());
311            desc.fConfig = kSkia8888_PM_GrPixelConfig;
312            GR_GL_GetIntegerv(fCurIntf, GR_GL_SAMPLES, &desc.fSampleCnt);
313            GR_GL_GetIntegerv(fCurIntf, GR_GL_STENCIL_BITS, &desc.fStencilBits);
314            GrGLint buffer;
315            GR_GL_GetIntegerv(fCurIntf, GR_GL_FRAMEBUFFER_BINDING, &buffer);
316            desc.fRenderTargetHandle = buffer;
317
318            SkSafeUnref(fCurRenderTarget);
319            fCurRenderTarget = fCurContext->createPlatformRenderTarget(desc);
320        }
321    }
322
323    virtual GrContext* getGrContext() {
324        return fCurContext;
325    }
326
327    virtual GrRenderTarget* getGrRenderTarget() SK_OVERRIDE {
328        return fCurRenderTarget;
329    }
330
331private:
332    GrContext*              fCurContext;
333    const GrGLInterface*    fCurIntf;
334    GrRenderTarget*         fCurRenderTarget;
335
336    SkOSWindow::SkBackEndTypes fBackend;
337    int fMSAASampleCount;
338
339    typedef SampleWindow::DeviceManager INHERITED;
340};
341
342///////////////
343static const char view_inval_msg[] = "view-inval-msg";
344
345void SampleWindow::postInvalDelay() {
346    (new SkEvent(view_inval_msg, this->getSinkID()))->postDelay(1);
347}
348
349static bool isInvalEvent(const SkEvent& evt) {
350    return evt.isType(view_inval_msg);
351}
352//////////////////
353
354SkFuncViewFactory::SkFuncViewFactory(SkViewCreateFunc func)
355    : fCreateFunc(func) {
356}
357
358SkView* SkFuncViewFactory::operator() () const {
359    return (*fCreateFunc)();
360}
361
362#include "GMSampleView.h"
363
364SkGMSampleViewFactory::SkGMSampleViewFactory(GMFactoryFunc func)
365    : fFunc(func) {
366}
367
368SkView* SkGMSampleViewFactory::operator() () const {
369    return new GMSampleView(fFunc(NULL));
370}
371
372SkViewRegister* SkViewRegister::gHead;
373SkViewRegister::SkViewRegister(SkViewFactory* fact) : fFact(fact) {
374    fFact->ref();
375    fChain = gHead;
376    gHead = this;
377}
378
379SkViewRegister::SkViewRegister(SkViewCreateFunc func) {
380    fFact = new SkFuncViewFactory(func);
381    fChain = gHead;
382    gHead = this;
383}
384
385SkViewRegister::SkViewRegister(GMFactoryFunc func) {
386    fFact = new SkGMSampleViewFactory(func);
387    fChain = gHead;
388    gHead = this;
389}
390
391class AutoUnrefArray {
392public:
393    AutoUnrefArray() {}
394    ~AutoUnrefArray() {
395        int count = fObjs.count();
396        for (int i = 0; i < count; ++i) {
397            fObjs[i]->unref();
398        }
399    }
400    SkRefCnt*& push_back() { return *fObjs.append(); }
401
402private:
403    SkTDArray<SkRefCnt*> fObjs;
404};
405
406// registers GMs as Samples
407// This can't be performed during static initialization because it could be
408// run before GMRegistry has been fully built.
409void SkGMRegistyToSampleRegistry() {
410    static bool gOnce;
411    static AutoUnrefArray fRegisters;
412
413    if (!gOnce) {
414        const skiagm::GMRegistry* gmreg = skiagm::GMRegistry::Head();
415        while (gmreg) {
416            fRegisters.push_back() = new SkViewRegister(gmreg->factory());
417            gmreg = gmreg->next();
418        }
419        gOnce = true;
420    }
421}
422
423#if 0
424#include <CoreFoundation/CoreFoundation.h>
425#include <CoreFoundation/CFURLAccess.h>
426
427static void testpdf() {
428    CFStringRef path = CFStringCreateWithCString(NULL, "/test.pdf",
429                                                 kCFStringEncodingUTF8);
430    CFURLRef url = CFURLCreateWithFileSystemPath(NULL, path,
431                                              kCFURLPOSIXPathStyle,
432                                              false);
433    CFRelease(path);
434    CGRect box = CGRectMake(0, 0, 8*72, 10*72);
435    CGContextRef cg = CGPDFContextCreateWithURL(url, &box, NULL);
436    CFRelease(url);
437
438    CGContextBeginPage(cg, &box);
439    CGRect r = CGRectMake(10, 10, 40 + 0.5, 50 + 0.5);
440    CGContextFillEllipseInRect(cg, r);
441    CGContextEndPage(cg);
442    CGContextRelease(cg);
443
444    if (false) {
445        SkBitmap bm;
446        bm.setConfig(SkBitmap::kA8_Config, 64, 64);
447        bm.allocPixels();
448        bm.eraseColor(0);
449
450        SkCanvas canvas(bm);
451
452    }
453}
454#endif
455
456//////////////////////////////////////////////////////////////////////////////
457
458enum FlipAxisEnum {
459    kFlipAxis_X = (1 << 0),
460    kFlipAxis_Y = (1 << 1)
461};
462
463#include "SkDrawFilter.h"
464
465class FlagsDrawFilter : public SkDrawFilter {
466public:
467    FlagsDrawFilter(SkOSMenu::TriState lcd, SkOSMenu::TriState aa, SkOSMenu::TriState filter,
468                    SkOSMenu::TriState hinting) :
469        fLCDState(lcd), fAAState(aa), fFilterState(filter), fHintingState(hinting) {}
470
471    virtual void filter(SkPaint* paint, Type t) {
472        if (kText_Type == t && SkOSMenu::kMixedState != fLCDState) {
473            paint->setLCDRenderText(SkOSMenu::kOnState == fLCDState);
474        }
475        if (SkOSMenu::kMixedState != fAAState) {
476            paint->setAntiAlias(SkOSMenu::kOnState == fAAState);
477        }
478        if (SkOSMenu::kMixedState != fFilterState) {
479            paint->setFilterBitmap(SkOSMenu::kOnState == fFilterState);
480        }
481        if (SkOSMenu::kMixedState != fHintingState) {
482            paint->setHinting(SkOSMenu::kOnState == fHintingState ?
483                              SkPaint::kNormal_Hinting :
484                              SkPaint::kSlight_Hinting);
485        }
486    }
487
488private:
489    SkOSMenu::TriState  fLCDState;
490    SkOSMenu::TriState  fAAState;
491    SkOSMenu::TriState  fFilterState;
492    SkOSMenu::TriState  fHintingState;
493};
494
495//////////////////////////////////////////////////////////////////////////////
496
497#define MAX_ZOOM_LEVEL  8
498#define MIN_ZOOM_LEVEL  -8
499
500static const char gCharEvtName[] = "SampleCode_Char_Event";
501static const char gKeyEvtName[] = "SampleCode_Key_Event";
502static const char gTitleEvtName[] = "SampleCode_Title_Event";
503static const char gPrefSizeEvtName[] = "SampleCode_PrefSize_Event";
504static const char gFastTextEvtName[] = "SampleCode_FastText_Event";
505static const char gUpdateWindowTitleEvtName[] = "SampleCode_UpdateWindowTitle";
506
507bool SampleCode::CharQ(const SkEvent& evt, SkUnichar* outUni) {
508    if (evt.isType(gCharEvtName, sizeof(gCharEvtName) - 1)) {
509        if (outUni) {
510            *outUni = evt.getFast32();
511        }
512        return true;
513    }
514    return false;
515}
516
517bool SampleCode::KeyQ(const SkEvent& evt, SkKey* outKey) {
518    if (evt.isType(gKeyEvtName, sizeof(gKeyEvtName) - 1)) {
519        if (outKey) {
520            *outKey = (SkKey)evt.getFast32();
521        }
522        return true;
523    }
524    return false;
525}
526
527bool SampleCode::TitleQ(const SkEvent& evt) {
528    return evt.isType(gTitleEvtName, sizeof(gTitleEvtName) - 1);
529}
530
531void SampleCode::TitleR(SkEvent* evt, const char title[]) {
532    SkASSERT(evt && TitleQ(*evt));
533    evt->setString(gTitleEvtName, title);
534}
535
536bool SampleCode::RequestTitle(SkView* view, SkString* title) {
537    SkEvent evt(gTitleEvtName);
538    if (view->doQuery(&evt)) {
539        title->set(evt.findString(gTitleEvtName));
540        return true;
541    }
542    return false;
543}
544
545bool SampleCode::PrefSizeQ(const SkEvent& evt) {
546    return evt.isType(gPrefSizeEvtName, sizeof(gPrefSizeEvtName) - 1);
547}
548
549void SampleCode::PrefSizeR(SkEvent* evt, SkScalar width, SkScalar height) {
550    SkASSERT(evt && PrefSizeQ(*evt));
551    SkScalar size[2];
552    size[0] = width;
553    size[1] = height;
554    evt->setScalars(gPrefSizeEvtName, 2, size);
555}
556
557bool SampleCode::FastTextQ(const SkEvent& evt) {
558    return evt.isType(gFastTextEvtName, sizeof(gFastTextEvtName) - 1);
559}
560
561///////////////////////////////////////////////////////////////////////////////
562
563static SkMSec gAnimTime;
564static SkMSec gAnimTimePrev;
565
566SkMSec SampleCode::GetAnimTime() { return gAnimTime; }
567SkMSec SampleCode::GetAnimTimeDelta() { return gAnimTime - gAnimTimePrev; }
568SkScalar SampleCode::GetAnimSecondsDelta() {
569    return SkDoubleToScalar(GetAnimTimeDelta() / 1000.0);
570}
571
572SkScalar SampleCode::GetAnimScalar(SkScalar speed, SkScalar period) {
573    // since gAnimTime can be up to 32 bits, we can't convert it to a float
574    // or we'll lose the low bits. Hence we use doubles for the intermediate
575    // calculations
576    double seconds = (double)gAnimTime / 1000.0;
577    double value = SkScalarToDouble(speed) * seconds;
578    if (period) {
579        value = ::fmod(value, SkScalarToDouble(period));
580    }
581    return SkDoubleToScalar(value);
582}
583
584SkScalar SampleCode::GetAnimSinScalar(SkScalar amplitude,
585                                      SkScalar periodInSec,
586                                      SkScalar phaseInSec) {
587    if (!periodInSec) {
588        return 0;
589    }
590    double t = (double)gAnimTime / 1000.0 + phaseInSec;
591    t *= SkScalarToFloat(2 * SK_ScalarPI) / periodInSec;
592    amplitude = SK_ScalarHalf * amplitude;
593    return SkScalarMul(amplitude, SkDoubleToScalar(sin(t))) + amplitude;
594}
595
596GrContext* SampleCode::GetGr() {
597    return gSampleWindow ? gSampleWindow->getGrContext() : NULL;
598}
599
600// some GMs rely on having a skiagm::GetGr function defined
601namespace skiagm {
602    GrContext* GetGr() { return SampleCode::GetGr(); }
603}
604
605//////////////////////////////////////////////////////////////////////////////
606
607static SkView* curr_view(SkWindow* wind) {
608    SkView::F2BIter iter(wind);
609    return iter.next();
610}
611
612static bool curr_title(SkWindow* wind, SkString* title) {
613    SkView* view = curr_view(wind);
614    if (view) {
615        SkEvent evt(gTitleEvtName);
616        if (view->doQuery(&evt)) {
617            title->set(evt.findString(gTitleEvtName));
618            return true;
619        }
620    }
621    return false;
622}
623
624void SampleWindow::setZoomCenter(float x, float y)
625{
626    fZoomCenterX = SkFloatToScalar(x);
627    fZoomCenterY = SkFloatToScalar(y);
628}
629
630bool SampleWindow::zoomIn()
631{
632    // Arbitrarily decided
633    if (fFatBitsScale == 25) return false;
634    fFatBitsScale++;
635    this->inval(NULL);
636    return true;
637}
638
639bool SampleWindow::zoomOut()
640{
641    if (fFatBitsScale == 1) return false;
642    fFatBitsScale--;
643    this->inval(NULL);
644    return true;
645}
646
647void SampleWindow::updatePointer(int x, int y)
648{
649    fMouseX = x;
650    fMouseY = y;
651    if (fShowZoomer) {
652        this->inval(NULL);
653    }
654}
655
656static inline SampleWindow::DeviceType cycle_devicetype(SampleWindow::DeviceType ct) {
657    static const SampleWindow::DeviceType gCT[] = {
658        SampleWindow::kPicture_DeviceType,
659        SampleWindow::kGPU_DeviceType,
660#if SK_ANGLE
661        SampleWindow::kANGLE_DeviceType,
662#endif
663        SampleWindow::kRaster_DeviceType, // skip the null gpu device in normal cycling
664        SampleWindow::kRaster_DeviceType
665    };
666    return gCT[ct];
667}
668
669static void usage(const char * argv0) {
670    SkDebugf("%s [--slide sampleName] [-i resourcePath] [--msaa sampleCount] [--pictureDir path]\n", argv0);
671    SkDebugf("    sampleName: sample at which to start.\n");
672    SkDebugf("    resourcePath: directory that stores image resources.\n");
673    SkDebugf("    msaa: request multisampling with the given sample count.\n");
674}
675
676SampleWindow::SampleWindow(void* hwnd, int argc, char** argv, DeviceManager* devManager)
677    : INHERITED(hwnd)
678    , fDevManager(NULL) {
679
680    this->registerPictFileSamples(argv, argc);
681    SkGMRegistyToSampleRegistry();
682    {
683        const SkViewRegister* reg = SkViewRegister::Head();
684        while (reg) {
685            *fSamples.append() = reg->factory();
686            reg = reg->next();
687        }
688    }
689
690    const char* resourcePath = NULL;
691    fCurrIndex = -1;
692    fMSAASampleCount = 0;
693
694    const char* const commandName = argv[0];
695    char* const* stop = argv + argc;
696    for (++argv; argv < stop; ++argv) {
697        if (strcmp(*argv, "-i") == 0) {
698            argv++;
699            if (argv < stop && **argv) {
700                resourcePath = *argv;
701            }
702        } else if (strcmp(*argv, "--slide") == 0) {
703            argv++;
704            if (argv < stop && **argv) {
705                fCurrIndex = findByTitle(*argv);
706                if (fCurrIndex < 0) {
707                    fprintf(stderr, "Unknown sample \"%s\"\n", *argv);
708                    listTitles();
709                }
710            }
711        } else if (strcmp(*argv, "--msaa") == 0) {
712            ++argv;
713            if (argv < stop && **argv) {
714                fMSAASampleCount = atoi(*argv);
715            }
716        } else if (strcmp(*argv, "--list") == 0) {
717            listTitles();
718        }
719        else {
720            usage(commandName);
721        }
722    }
723
724    if (fCurrIndex < 0) {
725        SkString title;
726        if (readTitleFromPrefs(&title)) {
727            fCurrIndex = findByTitle(title.c_str());
728        }
729    }
730
731    if (fCurrIndex < 0) {
732        fCurrIndex = 0;
733    }
734
735    gSampleWindow = this;
736
737#ifdef  PIPE_FILE
738    //Clear existing file or create file if it doesn't exist
739    FILE* f = fopen(FILE_PATH, "wb");
740    fclose(f);
741#endif
742
743    fPicture = NULL;
744
745    fDeviceType = kRaster_DeviceType;
746
747#if DEFAULT_TO_GPU
748    fDeviceType = kGPU_DeviceType;
749#endif
750#if SK_ANGLE && DEFAULT_TO_ANGLE
751    fDeviceType = kANGLE_DeviceType;
752#endif
753
754    fUseClip = false;
755    fNClip = false;
756    fAnimating = false;
757    fRotate = false;
758    fPerspAnim = false;
759    fPerspAnimTime = 0;
760    fScale = false;
761    fRequestGrabImage = false;
762    fUsePipe = false;
763    fMeasureFPS = false;
764    fLCDState = SkOSMenu::kMixedState;
765    fAAState = SkOSMenu::kMixedState;
766    fFilterState = SkOSMenu::kMixedState;
767    fHintingState = SkOSMenu::kMixedState;
768    fFlipAxis = 0;
769    fScrollTestX = fScrollTestY = 0;
770
771    fMouseX = fMouseY = 0;
772    fFatBitsScale = 8;
773    fTypeface = SkTypeface::CreateFromTypeface(NULL, SkTypeface::kBold);
774    fShowZoomer = false;
775
776    fZoomLevel = 0;
777    fZoomScale = SK_Scalar1;
778
779    fMagnify = false;
780    fDebugger = false;
781
782    fSaveToPdf = false;
783    fPdfCanvas = NULL;
784
785    fTransitionNext = 6;
786    fTransitionPrev = 2;
787
788    int sinkID = this->getSinkID();
789    fAppMenu = new SkOSMenu;
790    fAppMenu->setTitle("Global Settings");
791    int itemID;
792
793    itemID =fAppMenu->appendList("Device Type", "Device Type", sinkID, 0,
794                                "Raster", "Picture", "OpenGL",
795#if SK_ANGLE
796                                "ANGLE",
797#endif
798                                NULL);
799    fAppMenu->assignKeyEquivalentToItem(itemID, 'd');
800    itemID = fAppMenu->appendTriState("AA", "AA", sinkID, fAAState);
801    fAppMenu->assignKeyEquivalentToItem(itemID, 'b');
802    itemID = fAppMenu->appendTriState("LCD", "LCD", sinkID, fLCDState);
803    fAppMenu->assignKeyEquivalentToItem(itemID, 'l');
804    itemID = fAppMenu->appendTriState("Filter", "Filter", sinkID, fFilterState);
805    fAppMenu->assignKeyEquivalentToItem(itemID, 'n');
806    itemID = fAppMenu->appendTriState("Hinting", "Hinting", sinkID, fHintingState);
807    fAppMenu->assignKeyEquivalentToItem(itemID, 'h');
808    fUsePipeMenuItemID = fAppMenu->appendSwitch("Pipe", "Pipe" , sinkID, fUsePipe);
809    fAppMenu->assignKeyEquivalentToItem(fUsePipeMenuItemID, 'p');
810#ifdef DEBUGGER
811    itemID = fAppMenu->appendSwitch("Debugger", "Debugger", sinkID, fDebugger);
812    fAppMenu->assignKeyEquivalentToItem(itemID, 'q');
813#endif
814    itemID = fAppMenu->appendSwitch("Slide Show", "Slide Show" , sinkID, false);
815    fAppMenu->assignKeyEquivalentToItem(itemID, 'a');
816    itemID = fAppMenu->appendSwitch("Clip", "Clip" , sinkID, fUseClip);
817    fAppMenu->assignKeyEquivalentToItem(itemID, 'c');
818    itemID = fAppMenu->appendSwitch("Flip X", "Flip X" , sinkID, false);
819    fAppMenu->assignKeyEquivalentToItem(itemID, 'x');
820    itemID = fAppMenu->appendSwitch("Flip Y", "Flip Y" , sinkID, false);
821    fAppMenu->assignKeyEquivalentToItem(itemID, 'y');
822    itemID = fAppMenu->appendSwitch("Zoomer", "Zoomer" , sinkID, fShowZoomer);
823    fAppMenu->assignKeyEquivalentToItem(itemID, 'z');
824    itemID = fAppMenu->appendSwitch("Magnify", "Magnify" , sinkID, fMagnify);
825    fAppMenu->assignKeyEquivalentToItem(itemID, 'm');
826    itemID =fAppMenu->appendList("Transition-Next", "Transition-Next", sinkID,
827                                fTransitionNext, "Up", "Up and Right", "Right",
828                                "Down and Right", "Down", "Down and Left",
829                                "Left", "Up and Left", NULL);
830    fAppMenu->assignKeyEquivalentToItem(itemID, 'j');
831    itemID =fAppMenu->appendList("Transition-Prev", "Transition-Prev", sinkID,
832                                fTransitionPrev, "Up", "Up and Right", "Right",
833                                "Down and Right", "Down", "Down and Left",
834                                "Left", "Up and Left", NULL);
835    fAppMenu->assignKeyEquivalentToItem(itemID, 'k');
836    itemID = fAppMenu->appendAction("Save to PDF", sinkID);
837    fAppMenu->assignKeyEquivalentToItem(itemID, 'e');
838
839    this->addMenu(fAppMenu);
840    fSlideMenu = new SkOSMenu;
841    this->addMenu(fSlideMenu);
842
843//    this->setConfig(SkBitmap::kRGB_565_Config);
844    this->setConfig(SkBitmap::kARGB_8888_Config);
845    this->setVisibleP(true);
846    this->setClipToBounds(false);
847
848    skiagm::GM::SetResourcePath(resourcePath);
849
850    this->loadView((*fSamples[fCurrIndex])());
851
852    fPDFData = NULL;
853
854    if (NULL == devManager) {
855        fDevManager = new DefaultDeviceManager();
856    } else {
857        devManager->ref();
858        fDevManager = devManager;
859    }
860    fDevManager->setUpBackend(this, fMSAASampleCount);
861
862    // If another constructor set our dimensions, ensure that our
863    // onSizeChange gets called.
864    if (this->height() && this->width()) {
865        this->onSizeChange();
866    }
867
868    // can't call this synchronously, since it may require a subclass to
869    // to implement, or the caller may need us to have returned from the
870    // constructor first. Hence we post an event to ourselves.
871//    this->updateTitle();
872    postEventToSink(new SkEvent(gUpdateWindowTitleEvtName), this);
873}
874
875SampleWindow::~SampleWindow() {
876    delete fPicture;
877    delete fPdfCanvas;
878    fTypeface->unref();
879
880    SkSafeUnref(fDevManager);
881}
882
883static void make_filepath(SkString* path, const char* dir, const SkString& name) {
884    size_t len = strlen(dir);
885    path->set(dir);
886    if (len > 0 && dir[len - 1] != '/') {
887        path->append("/");
888    }
889    path->append(name);
890}
891
892void SampleWindow::registerPictFileSamples(char** argv, int argc) {
893    const char* pictDir = NULL;
894
895    for (int i = 0; i < argc; ++i) {
896        if (!strcmp(argv[i], "--pictureDir")) {
897            i += 1;
898            if (i < argc) {
899                pictDir = argv[i];
900                break;
901            }
902        }
903    }
904    if (pictDir) {
905        SkOSFile::Iter iter(pictDir, "skp");
906        SkString filename;
907        while (iter.next(&filename)) {
908            SkString path;
909            make_filepath(&path, pictDir, filename);
910            *fSamples.append() = new PictFileFactory(path);
911        }
912    }
913}
914
915int SampleWindow::findByTitle(const char title[]) {
916    int i, count = fSamples.count();
917    for (i = 0; i < count; i++) {
918        if (getSampleTitle(i).equals(title)) {
919            return i;
920        }
921    }
922    return -1;
923}
924
925void SampleWindow::listTitles() {
926    int count = fSamples.count();
927    SkDebugf("All Slides:\n");
928    for (int i = 0; i < count; i++) {
929        SkDebugf("    %s\n", getSampleTitle(i).c_str());
930    }
931}
932
933static SkBitmap capture_bitmap(SkCanvas* canvas) {
934    SkBitmap bm;
935    const SkBitmap& src = canvas->getDevice()->accessBitmap(false);
936    src.copyTo(&bm, src.config());
937    return bm;
938}
939
940static bool bitmap_diff(SkCanvas* canvas, const SkBitmap& orig,
941                        SkBitmap* diff) {
942    const SkBitmap& src = canvas->getDevice()->accessBitmap(false);
943
944    SkAutoLockPixels alp0(src);
945    SkAutoLockPixels alp1(orig);
946    for (int y = 0; y < src.height(); y++) {
947        const void* srcP = src.getAddr(0, y);
948        const void* origP = orig.getAddr(0, y);
949        size_t bytes = src.width() * src.bytesPerPixel();
950        if (memcmp(srcP, origP, bytes)) {
951            SkDebugf("---------- difference on line %d\n", y);
952            return true;
953        }
954    }
955    return false;
956}
957
958static void drawText(SkCanvas* canvas, SkString string, SkScalar left, SkScalar top, SkPaint& paint)
959{
960    SkColor desiredColor = paint.getColor();
961    paint.setColor(SK_ColorWHITE);
962    const char* c_str = string.c_str();
963    size_t size = string.size();
964    SkRect bounds;
965    paint.measureText(c_str, size, &bounds);
966    bounds.offset(left, top);
967    SkScalar inset = SkIntToScalar(-2);
968    bounds.inset(inset, inset);
969    canvas->drawRect(bounds, paint);
970    if (desiredColor != SK_ColorBLACK) {
971        paint.setColor(SK_ColorBLACK);
972        canvas->drawText(c_str, size, left + SK_Scalar1, top + SK_Scalar1, paint);
973    }
974    paint.setColor(desiredColor);
975    canvas->drawText(c_str, size, left, top, paint);
976}
977
978#define XCLIP_N  8
979#define YCLIP_N  8
980
981void SampleWindow::draw(SkCanvas* canvas) {
982    if (!fDevManager->prepareCanvas(fDeviceType, canvas, this)) {
983        return;
984    }
985    // update the animation time
986    if (!gAnimTimePrev && !gAnimTime) {
987        // first time make delta be 0
988        gAnimTime = SkTime::GetMSecs();
989        gAnimTimePrev = gAnimTime;
990    } else {
991        gAnimTimePrev = gAnimTime;
992        gAnimTime = SkTime::GetMSecs();
993    }
994
995    const SkMatrix& localM = fGesture.localM();
996    if (localM.getType() & SkMatrix::kScale_Mask) {
997        canvas->setExternalMatrix(&localM);
998    }
999    if (fGesture.isActive()) {
1000        this->updateMatrix();
1001    }
1002
1003    if (fNClip) {
1004        this->INHERITED::draw(canvas);
1005        SkBitmap orig = capture_bitmap(canvas);
1006
1007        const SkScalar w = this->width();
1008        const SkScalar h = this->height();
1009        const SkScalar cw = w / XCLIP_N;
1010        const SkScalar ch = h / YCLIP_N;
1011        for (int y = 0; y < YCLIP_N; y++) {
1012            SkRect r;
1013            r.fTop = y * ch;
1014            r.fBottom = (y + 1) * ch;
1015            if (y == YCLIP_N - 1) {
1016                r.fBottom = h;
1017            }
1018            for (int x = 0; x < XCLIP_N; x++) {
1019                SkAutoCanvasRestore acr(canvas, true);
1020                r.fLeft = x * cw;
1021                r.fRight = (x + 1) * cw;
1022                if (x == XCLIP_N - 1) {
1023                    r.fRight = w;
1024                }
1025                canvas->clipRect(r);
1026                this->INHERITED::draw(canvas);
1027            }
1028        }
1029
1030        SkBitmap diff;
1031        if (bitmap_diff(canvas, orig, &diff)) {
1032        }
1033    } else {
1034        this->INHERITED::draw(canvas);
1035    }
1036    if (fShowZoomer && !fSaveToPdf) {
1037        showZoomer(canvas);
1038    }
1039    if (fMagnify && !fSaveToPdf) {
1040        magnify(canvas);
1041    }
1042
1043    // do this last
1044    fDevManager->publishCanvas(fDeviceType, canvas, this);
1045}
1046
1047static float clipW = 200;
1048static float clipH = 200;
1049void SampleWindow::magnify(SkCanvas* canvas) {
1050    SkRect r;
1051    int count = canvas->save();
1052
1053    SkMatrix m = canvas->getTotalMatrix();
1054    m.invert(&m);
1055    SkPoint offset, center;
1056    SkScalar mouseX = fMouseX * SK_Scalar1;
1057    SkScalar mouseY = fMouseY * SK_Scalar1;
1058    m.mapXY(mouseX - clipW/2, mouseY - clipH/2, &offset);
1059    m.mapXY(mouseX, mouseY, &center);
1060
1061    r.set(0, 0, clipW * m.getScaleX(), clipH * m.getScaleX());
1062    r.offset(offset.fX, offset.fY);
1063
1064    SkPaint paint;
1065    paint.setColor(0xFF66AAEE);
1066    paint.setStyle(SkPaint::kStroke_Style);
1067    paint.setStrokeWidth(10.f * m.getScaleX());
1068    //lense offset
1069    //canvas->translate(0, -250);
1070    canvas->drawRect(r, paint);
1071    canvas->clipRect(r);
1072
1073    m = canvas->getTotalMatrix();
1074    m.setTranslate(-center.fX, -center.fY);
1075    m.postScale(0.5f * fFatBitsScale, 0.5f * fFatBitsScale);
1076    m.postTranslate(center.fX, center.fY);
1077    canvas->concat(m);
1078
1079    this->INHERITED::draw(canvas);
1080
1081    canvas->restoreToCount(count);
1082}
1083
1084void SampleWindow::showZoomer(SkCanvas* canvas) {
1085        int count = canvas->save();
1086        canvas->resetMatrix();
1087        // Ensure the mouse position is on screen.
1088        int width = SkScalarRound(this->width());
1089        int height = SkScalarRound(this->height());
1090        if (fMouseX >= width) fMouseX = width - 1;
1091        else if (fMouseX < 0) fMouseX = 0;
1092        if (fMouseY >= height) fMouseY = height - 1;
1093        else if (fMouseY < 0) fMouseY = 0;
1094
1095        SkBitmap bitmap = capture_bitmap(canvas);
1096        bitmap.lockPixels();
1097
1098        // Find the size of the zoomed in view, forced to be odd, so the examined pixel is in the middle.
1099        int zoomedWidth = (width >> 1) | 1;
1100        int zoomedHeight = (height >> 1) | 1;
1101        SkIRect src;
1102        src.set(0, 0, zoomedWidth / fFatBitsScale, zoomedHeight / fFatBitsScale);
1103        src.offset(fMouseX - (src.width()>>1), fMouseY - (src.height()>>1));
1104        SkRect dest;
1105        dest.set(0, 0, SkIntToScalar(zoomedWidth), SkIntToScalar(zoomedHeight));
1106        dest.offset(SkIntToScalar(width - zoomedWidth), SkIntToScalar(height - zoomedHeight));
1107        SkPaint paint;
1108        // Clear the background behind our zoomed in view
1109        paint.setColor(SK_ColorWHITE);
1110        canvas->drawRect(dest, paint);
1111        canvas->drawBitmapRect(bitmap, &src, dest);
1112        paint.setColor(SK_ColorBLACK);
1113        paint.setStyle(SkPaint::kStroke_Style);
1114        // Draw a border around the pixel in the middle
1115        SkRect originalPixel;
1116        originalPixel.set(SkIntToScalar(fMouseX), SkIntToScalar(fMouseY), SkIntToScalar(fMouseX + 1), SkIntToScalar(fMouseY + 1));
1117        SkMatrix matrix;
1118        SkRect scalarSrc;
1119        scalarSrc.set(src);
1120        SkColor color = bitmap.getColor(fMouseX, fMouseY);
1121        if (matrix.setRectToRect(scalarSrc, dest, SkMatrix::kFill_ScaleToFit)) {
1122            SkRect pixel;
1123            matrix.mapRect(&pixel, originalPixel);
1124            // TODO Perhaps measure the values and make the outline white if it's "dark"
1125            if (color == SK_ColorBLACK) {
1126                paint.setColor(SK_ColorWHITE);
1127            }
1128            canvas->drawRect(pixel, paint);
1129        }
1130        paint.setColor(SK_ColorBLACK);
1131        // Draw a border around the destination rectangle
1132        canvas->drawRect(dest, paint);
1133        paint.setStyle(SkPaint::kStrokeAndFill_Style);
1134        // Identify the pixel and its color on screen
1135        paint.setTypeface(fTypeface);
1136        paint.setAntiAlias(true);
1137        SkScalar lineHeight = paint.getFontMetrics(NULL);
1138        SkString string;
1139        string.appendf("(%i, %i)", fMouseX, fMouseY);
1140        SkScalar left = dest.fLeft + SkIntToScalar(3);
1141        SkScalar i = SK_Scalar1;
1142        drawText(canvas, string, left, SkScalarMulAdd(lineHeight, i, dest.fTop), paint);
1143        // Alpha
1144        i += SK_Scalar1;
1145        string.reset();
1146        string.appendf("A: %X", SkColorGetA(color));
1147        drawText(canvas, string, left, SkScalarMulAdd(lineHeight, i, dest.fTop), paint);
1148        // Red
1149        i += SK_Scalar1;
1150        string.reset();
1151        string.appendf("R: %X", SkColorGetR(color));
1152        paint.setColor(SK_ColorRED);
1153        drawText(canvas, string, left, SkScalarMulAdd(lineHeight, i, dest.fTop), paint);
1154        // Green
1155        i += SK_Scalar1;
1156        string.reset();
1157        string.appendf("G: %X", SkColorGetG(color));
1158        paint.setColor(SK_ColorGREEN);
1159        drawText(canvas, string, left, SkScalarMulAdd(lineHeight, i, dest.fTop), paint);
1160        // Blue
1161        i += SK_Scalar1;
1162        string.reset();
1163        string.appendf("B: %X", SkColorGetB(color));
1164        paint.setColor(SK_ColorBLUE);
1165        drawText(canvas, string, left, SkScalarMulAdd(lineHeight, i, dest.fTop), paint);
1166        canvas->restoreToCount(count);
1167}
1168
1169void SampleWindow::onDraw(SkCanvas* canvas) {
1170}
1171
1172#include "SkColorPriv.h"
1173
1174static void reverseRedAndBlue(const SkBitmap& bm) {
1175    SkASSERT(bm.config() == SkBitmap::kARGB_8888_Config);
1176    uint8_t* p = (uint8_t*)bm.getPixels();
1177    uint8_t* stop = p + bm.getSize();
1178    while (p < stop) {
1179        // swap red/blue (to go from ARGB(int) to RGBA(memory) and premultiply
1180        unsigned scale = SkAlpha255To256(p[3]);
1181        unsigned r = p[2];
1182        unsigned b = p[0];
1183        p[0] = SkAlphaMul(r, scale);
1184        p[1] = SkAlphaMul(p[1], scale);
1185        p[2] = SkAlphaMul(b, scale);
1186        p += 4;
1187    }
1188}
1189
1190void SampleWindow::saveToPdf()
1191{
1192    fSaveToPdf = true;
1193    this->inval(NULL);
1194}
1195
1196SkCanvas* SampleWindow::beforeChildren(SkCanvas* canvas) {
1197    if (fSaveToPdf) {
1198        const SkBitmap& bmp = canvas->getDevice()->accessBitmap(false);
1199        SkISize size = SkISize::Make(bmp.width(), bmp.height());
1200        SkPDFDevice* pdfDevice = new SkPDFDevice(size, size,
1201                canvas->getTotalMatrix());
1202        fPdfCanvas = new SkCanvas(pdfDevice);
1203        pdfDevice->unref();
1204        canvas = fPdfCanvas;
1205    } else {
1206        switch (fDeviceType) {
1207            case kRaster_DeviceType:
1208                // fallthrough
1209            case kGPU_DeviceType:
1210                // fallthrough
1211#if SK_ANGLE
1212            case kANGLE_DeviceType:
1213#endif
1214                canvas = this->INHERITED::beforeChildren(canvas);
1215                break;
1216            case kPicture_DeviceType:
1217                fPicture = new SkPicture;
1218                canvas = fPicture->beginRecording(9999, 9999);
1219                break;
1220            case kNullGPU_DeviceType:
1221                break;
1222            default:
1223                SkASSERT(false);
1224                break;
1225        }
1226    }
1227
1228    if (fUseClip) {
1229        canvas->drawColor(0xFFFF88FF);
1230        canvas->clipPath(fClipPath, SkRegion::kIntersect_Op, true);
1231    }
1232
1233    return canvas;
1234}
1235
1236static void paint_rgn(const SkBitmap& bm, const SkIRect& r,
1237                      const SkRegion& rgn) {
1238    SkCanvas    canvas(bm);
1239    SkRegion    inval(rgn);
1240
1241    inval.translate(r.fLeft, r.fTop);
1242    canvas.clipRegion(inval);
1243    canvas.drawColor(0xFFFF8080);
1244}
1245#include "SkData.h"
1246void SampleWindow::afterChildren(SkCanvas* orig) {
1247    if (fSaveToPdf) {
1248        fSaveToPdf = false;
1249        if (fShowZoomer) {
1250            showZoomer(fPdfCanvas);
1251        }
1252        SkString name;
1253        name.printf("%s.pdf", this->getTitle());
1254        SkPDFDocument doc;
1255        SkPDFDevice* device = static_cast<SkPDFDevice*>(fPdfCanvas->getDevice());
1256        doc.appendPage(device);
1257#ifdef SK_BUILD_FOR_ANDROID
1258        name.prepend("/sdcard/");
1259#endif
1260
1261#ifdef SK_BUILD_FOR_IOS
1262        SkDynamicMemoryWStream mstream;
1263        doc.emitPDF(&mstream);
1264        fPDFData = mstream.copyToData();
1265#endif
1266        SkFILEWStream stream(name.c_str());
1267        if (stream.isValid()) {
1268            doc.emitPDF(&stream);
1269            const char* desc = "File saved from Skia SampleApp";
1270            this->onPDFSaved(this->getTitle(), desc, name.c_str());
1271        }
1272
1273        delete fPdfCanvas;
1274        fPdfCanvas = NULL;
1275
1276        // We took over the draw calls in order to create the PDF, so we need
1277        // to redraw.
1278        this->inval(NULL);
1279        return;
1280    }
1281
1282    if (fRequestGrabImage) {
1283        fRequestGrabImage = false;
1284
1285        SkDevice* device = orig->getDevice();
1286        SkBitmap bmp;
1287        if (device->accessBitmap(false).copyTo(&bmp, SkBitmap::kARGB_8888_Config)) {
1288            static int gSampleGrabCounter;
1289            SkString name;
1290            name.printf("sample_grab_%d", gSampleGrabCounter++);
1291            SkImageEncoder::EncodeFile(name.c_str(), bmp,
1292                                       SkImageEncoder::kPNG_Type, 100);
1293        }
1294    }
1295
1296    if (kPicture_DeviceType == fDeviceType) {
1297        if (true) {
1298            SkPicture* pict = new SkPicture(*fPicture);
1299            fPicture->unref();
1300            this->installDrawFilter(orig);
1301            orig->drawPicture(*pict);
1302            pict->unref();
1303        } else if (true) {
1304            SkDynamicMemoryWStream ostream;
1305            fPicture->serialize(&ostream);
1306            fPicture->unref();
1307
1308            SkAutoDataUnref data(ostream.copyToData());
1309            SkMemoryStream istream(data.data(), data.size());
1310            SkPicture pict(&istream);
1311            orig->drawPicture(pict);
1312        } else {
1313            fPicture->draw(orig);
1314            fPicture->unref();
1315        }
1316        fPicture = NULL;
1317    }
1318
1319    // Do this after presentGL and other finishing, rather than in afterChild
1320    if (fMeasureFPS && fMeasureFPS_Time) {
1321        fMeasureFPS_Time = SkTime::GetMSecs() - fMeasureFPS_Time;
1322        this->updateTitle();
1323        this->postInvalDelay();
1324    }
1325
1326    //    if ((fScrollTestX | fScrollTestY) != 0)
1327    if (false) {
1328        const SkBitmap& bm = orig->getDevice()->accessBitmap(true);
1329        int dx = fScrollTestX * 7;
1330        int dy = fScrollTestY * 7;
1331        SkIRect r;
1332        SkRegion inval;
1333
1334        r.set(50, 50, 50+100, 50+100);
1335        bm.scrollRect(&r, dx, dy, &inval);
1336        paint_rgn(bm, r, inval);
1337    }
1338#ifdef DEBUGGER
1339    SkView* curr = curr_view(this);
1340    if (fDebugger && !is_debugger(curr) && !is_transition(curr) && !is_overview(curr)) {
1341        //Stop Pipe when fDebugger is active
1342        fUsePipe = false;
1343        (void)SampleView::SetUsePipe(curr, false);
1344        fAppMenu->getItemByID(fUsePipeMenuItemID)->setBool(fUsePipe);
1345        this->onUpdateMenu(fAppMenu);
1346
1347        //Reset any transformations
1348        fGesture.stop();
1349        fGesture.reset();
1350
1351        this->loadView(create_debugger(gTempDataStore.begin(),
1352                                       gTempDataStore.count()));
1353    }
1354#endif
1355}
1356
1357void SampleWindow::beforeChild(SkView* child, SkCanvas* canvas) {
1358    if (fScale) {
1359        SkScalar scale = SK_Scalar1 * 7 / 10;
1360        SkScalar cx = this->width() / 2;
1361        SkScalar cy = this->height() / 2;
1362        canvas->translate(cx, cy);
1363        canvas->scale(scale, scale);
1364        canvas->translate(-cx, -cy);
1365    }
1366    if (fRotate) {
1367        SkScalar cx = this->width() / 2;
1368        SkScalar cy = this->height() / 2;
1369        canvas->translate(cx, cy);
1370        canvas->rotate(SkIntToScalar(30));
1371        canvas->translate(-cx, -cy);
1372    }
1373    if (fPerspAnim) {
1374        fPerspAnimTime += SampleCode::GetAnimSecondsDelta();
1375
1376        static const SkScalar gAnimPeriod = 10 * SK_Scalar1;
1377        static const SkScalar gAnimMag = SK_Scalar1 / 1000;
1378        SkScalar t = SkScalarMod(fPerspAnimTime, gAnimPeriod);
1379        if (SkScalarFloorToInt(SkScalarDiv(fPerspAnimTime, gAnimPeriod)) & 0x1) {
1380            t = gAnimPeriod - t;
1381        }
1382        t = 2 * t - gAnimPeriod;
1383        t = SkScalarMul(SkScalarDiv(t, gAnimPeriod), gAnimMag);
1384        SkMatrix m;
1385        m.reset();
1386        m.setPerspY(t);
1387        canvas->concat(m);
1388    }
1389
1390    this->installDrawFilter(canvas);
1391
1392    if (fMeasureFPS) {
1393        fMeasureFPS_Time = 0;   // 0 means the child is not aware of repeat-draw
1394        if (SampleView::SetRepeatDraw(child, FPS_REPEAT_COUNT)) {
1395            fMeasureFPS_Time = SkTime::GetMSecs();
1396        }
1397    } else {
1398        (void)SampleView::SetRepeatDraw(child, 1);
1399    }
1400    if (fPerspAnim) {
1401        this->inval(NULL);
1402    }
1403    //(void)SampleView::SetUsePipe(child, fUsePipe);
1404}
1405
1406void SampleWindow::afterChild(SkView* child, SkCanvas* canvas) {
1407    canvas->setDrawFilter(NULL);
1408}
1409
1410static SkBitmap::Config gConfigCycle[] = {
1411    SkBitmap::kNo_Config,           // none -> none
1412    SkBitmap::kNo_Config,           // a1 -> none
1413    SkBitmap::kNo_Config,           // a8 -> none
1414    SkBitmap::kNo_Config,           // index8 -> none
1415    SkBitmap::kARGB_4444_Config,    // 565 -> 4444
1416    SkBitmap::kARGB_8888_Config,    // 4444 -> 8888
1417    SkBitmap::kRGB_565_Config       // 8888 -> 565
1418};
1419
1420static SkBitmap::Config cycle_configs(SkBitmap::Config c) {
1421    return gConfigCycle[c];
1422}
1423
1424void SampleWindow::changeZoomLevel(float delta) {
1425    fZoomLevel += SkFloatToScalar(delta);
1426    if (fZoomLevel > 0) {
1427        fZoomLevel = SkMinScalar(fZoomLevel, MAX_ZOOM_LEVEL);
1428        fZoomScale = fZoomLevel + SK_Scalar1;
1429    } else if (fZoomLevel < 0) {
1430        fZoomLevel = SkMaxScalar(fZoomLevel, MIN_ZOOM_LEVEL);
1431        fZoomScale = SK_Scalar1 / (SK_Scalar1 - fZoomLevel);
1432    } else {
1433        fZoomScale = SK_Scalar1;
1434    }
1435    this->updateMatrix();
1436}
1437
1438void SampleWindow::updateMatrix(){
1439    SkMatrix m;
1440    m.reset();
1441    if (fZoomLevel) {
1442        SkPoint center;
1443        //m = this->getLocalMatrix();//.invert(&m);
1444        m.mapXY(fZoomCenterX, fZoomCenterY, &center);
1445        SkScalar cx = center.fX;
1446        SkScalar cy = center.fY;
1447
1448        m.setTranslate(-cx, -cy);
1449        m.postScale(fZoomScale, fZoomScale);
1450        m.postTranslate(cx, cy);
1451    }
1452
1453    if (fFlipAxis) {
1454        m.preTranslate(fZoomCenterX, fZoomCenterY);
1455        if (fFlipAxis & kFlipAxis_X) {
1456            m.preScale(-SK_Scalar1, SK_Scalar1);
1457        }
1458        if (fFlipAxis & kFlipAxis_Y) {
1459            m.preScale(SK_Scalar1, -SK_Scalar1);
1460        }
1461        m.preTranslate(-fZoomCenterX, -fZoomCenterY);
1462        //canvas->concat(m);
1463    }
1464    // Apply any gesture matrix
1465    m.preConcat(fGesture.localM());
1466    m.preConcat(fGesture.globalM());
1467
1468    this->setLocalMatrix(m);
1469
1470    this->updateTitle();
1471    this->inval(NULL);
1472}
1473bool SampleWindow::previousSample() {
1474    fCurrIndex = (fCurrIndex - 1 + fSamples.count()) % fSamples.count();
1475    this->loadView(create_transition(curr_view(this), (*fSamples[fCurrIndex])(),
1476                                     fTransitionPrev));
1477    return true;
1478}
1479
1480bool SampleWindow::nextSample() {
1481    fCurrIndex = (fCurrIndex + 1) % fSamples.count();
1482    this->loadView(create_transition(curr_view(this), (*fSamples[fCurrIndex])(),
1483                                     fTransitionNext));
1484    return true;
1485}
1486
1487bool SampleWindow::goToSample(int i) {
1488    fCurrIndex = (i) % fSamples.count();
1489    this->loadView(create_transition(curr_view(this),(*fSamples[fCurrIndex])(), 6));
1490    return true;
1491}
1492
1493SkString SampleWindow::getSampleTitle(int i) {
1494    SkView* view = (*fSamples[i])();
1495    SkString title;
1496    SampleCode::RequestTitle(view, &title);
1497    view->unref();
1498    return title;
1499}
1500
1501int SampleWindow::sampleCount() {
1502    return fSamples.count();
1503}
1504
1505void SampleWindow::showOverview() {
1506    this->loadView(create_transition(curr_view(this),
1507                                     create_overview(fSamples.count(), fSamples.begin()),
1508                                     4));
1509}
1510
1511void SampleWindow::installDrawFilter(SkCanvas* canvas) {
1512    canvas->setDrawFilter(new FlagsDrawFilter(fLCDState, fAAState,
1513                                              fFilterState, fHintingState))->unref();
1514}
1515
1516void SampleWindow::postAnimatingEvent() {
1517    if (fAnimating) {
1518        (new SkEvent(ANIMATING_EVENTTYPE, this->getSinkID()))->postDelay(ANIMATING_DELAY);
1519    }
1520}
1521
1522bool SampleWindow::onEvent(const SkEvent& evt) {
1523    if (evt.isType(gUpdateWindowTitleEvtName)) {
1524        this->updateTitle();
1525        return true;
1526    }
1527    if (evt.isType(ANIMATING_EVENTTYPE)) {
1528        if (fAnimating) {
1529            this->nextSample();
1530            this->postAnimatingEvent();
1531        }
1532        return true;
1533    }
1534    if (evt.isType("replace-transition-view")) {
1535        this->loadView((SkView*)SkEventSink::FindSink(evt.getFast32()));
1536        return true;
1537    }
1538    if (evt.isType("set-curr-index")) {
1539        this->goToSample(evt.getFast32());
1540        return true;
1541    }
1542    if (isInvalEvent(evt)) {
1543        this->inval(NULL);
1544        return true;
1545    }
1546    int selected = -1;
1547    if (SkOSMenu::FindListIndex(evt, "Device Type", &selected)) {
1548        this->setDeviceType((DeviceType)selected);
1549        return true;
1550    }
1551    if (SkOSMenu::FindSwitchState(evt, "Pipe", &fUsePipe)) {
1552#ifdef PIPE_NET
1553        if (!fUsePipe)
1554            gServer.disconnectAll();
1555#endif
1556        (void)SampleView::SetUsePipe(curr_view(this), fUsePipe);
1557        this->updateTitle();
1558        this->inval(NULL);
1559        return true;
1560    }
1561    if (SkOSMenu::FindSwitchState(evt, "Slide Show", NULL)) {
1562        this->toggleSlideshow();
1563        return true;
1564    }
1565    if (SkOSMenu::FindTriState(evt, "AA", &fAAState) ||
1566        SkOSMenu::FindTriState(evt, "LCD", &fLCDState) ||
1567        SkOSMenu::FindTriState(evt, "Filter", &fFilterState) ||
1568        SkOSMenu::FindTriState(evt, "Hinting", &fHintingState) ||
1569        SkOSMenu::FindSwitchState(evt, "Clip", &fUseClip) ||
1570        SkOSMenu::FindSwitchState(evt, "Zoomer", &fShowZoomer) ||
1571        SkOSMenu::FindSwitchState(evt, "Magnify", &fMagnify) ||
1572        SkOSMenu::FindListIndex(evt, "Transition-Next", &fTransitionNext) ||
1573        SkOSMenu::FindListIndex(evt, "Transition-Prev", &fTransitionPrev)) {
1574        this->inval(NULL);
1575        this->updateTitle();
1576        return true;
1577    }
1578    if (SkOSMenu::FindSwitchState(evt, "Flip X", NULL)) {
1579        fFlipAxis ^= kFlipAxis_X;
1580        this->updateMatrix();
1581        return true;
1582    }
1583    if (SkOSMenu::FindSwitchState(evt, "Flip Y", NULL)) {
1584        fFlipAxis ^= kFlipAxis_Y;
1585        this->updateMatrix();
1586        return true;
1587    }
1588    if (SkOSMenu::FindAction(evt,"Save to PDF")) {
1589        this->saveToPdf();
1590        return true;
1591    }
1592#ifdef DEBUGGER
1593    if (SkOSMenu::FindSwitchState(evt, "Debugger", &fDebugger)) {
1594        if (fDebugger) {
1595            fUsePipe = true;
1596            (void)SampleView::SetUsePipe(curr_view(this), true);
1597        } else {
1598            this->loadView(fSamples[fCurrIndex]());
1599        }
1600        this->inval(NULL);
1601        return true;
1602    }
1603#endif
1604    return this->INHERITED::onEvent(evt);
1605}
1606
1607bool SampleWindow::onQuery(SkEvent* query) {
1608    if (query->isType("get-slide-count")) {
1609        query->setFast32(fSamples.count());
1610        return true;
1611    }
1612    if (query->isType("get-slide-title")) {
1613        SkView* view = (*fSamples[query->getFast32()])();
1614        SkEvent evt(gTitleEvtName);
1615        if (view->doQuery(&evt)) {
1616            query->setString("title", evt.findString(gTitleEvtName));
1617        }
1618        SkSafeUnref(view);
1619        return true;
1620    }
1621    if (query->isType("use-fast-text")) {
1622        SkEvent evt(gFastTextEvtName);
1623        return curr_view(this)->doQuery(&evt);
1624    }
1625    if (query->isType("ignore-window-bitmap")) {
1626        query->setFast32(this->getGrContext() != NULL);
1627        return true;
1628    }
1629    return this->INHERITED::onQuery(query);
1630}
1631
1632static void cleanup_for_filename(SkString* name) {
1633    char* str = name->writable_str();
1634    for (size_t i = 0; i < name->size(); i++) {
1635        switch (str[i]) {
1636            case ':': str[i] = '-'; break;
1637            case '/': str[i] = '-'; break;
1638            case ' ': str[i] = '_'; break;
1639            default: break;
1640        }
1641    }
1642}
1643
1644bool SampleWindow::onHandleChar(SkUnichar uni) {
1645    {
1646        SkView* view = curr_view(this);
1647        if (view) {
1648            SkEvent evt(gCharEvtName);
1649            evt.setFast32(uni);
1650            if (view->doQuery(&evt)) {
1651                return true;
1652            }
1653        }
1654    }
1655
1656    int dx = 0xFF;
1657    int dy = 0xFF;
1658
1659    switch (uni) {
1660        case '5': dx =  0; dy =  0; break;
1661        case '8': dx =  0; dy = -1; break;
1662        case '6': dx =  1; dy =  0; break;
1663        case '2': dx =  0; dy =  1; break;
1664        case '4': dx = -1; dy =  0; break;
1665        case '7': dx = -1; dy = -1; break;
1666        case '9': dx =  1; dy = -1; break;
1667        case '3': dx =  1; dy =  1; break;
1668        case '1': dx = -1; dy =  1; break;
1669
1670        default:
1671            break;
1672    }
1673
1674    if (0xFF != dx && 0xFF != dy) {
1675        if ((dx | dy) == 0) {
1676            fScrollTestX = fScrollTestY = 0;
1677        } else {
1678            fScrollTestX += dx;
1679            fScrollTestY += dy;
1680        }
1681        this->inval(NULL);
1682        return true;
1683    }
1684
1685    switch (uni) {
1686        case 'f':
1687            // only
1688            toggleFPS();
1689            break;
1690        case 'g':
1691            fRequestGrabImage = true;
1692            this->inval(NULL);
1693            break;
1694        case 'i':
1695            this->zoomIn();
1696            break;
1697        case 'o':
1698            this->zoomOut();
1699            break;
1700        case 'r':
1701            fRotate = !fRotate;
1702            this->inval(NULL);
1703            this->updateTitle();
1704            return true;
1705        case 'k':
1706            fPerspAnim = !fPerspAnim;
1707            this->inval(NULL);
1708            this->updateTitle();
1709            return true;
1710        case '\\':
1711            this->setDeviceType(kNullGPU_DeviceType);
1712            this->inval(NULL);
1713            this->updateTitle();
1714            return true;
1715        case 'p':
1716            {
1717                GrContext* grContext = this->getGrContext();
1718                if (grContext) {
1719                    size_t cacheBytes = grContext->getGpuTextureCacheBytes();
1720                    grContext->freeGpuResources();
1721                    SkDebugf("Purged %d bytes from the GPU resource cache.\n",
1722                             cacheBytes);
1723                }
1724            }
1725            return true;
1726        case 's':
1727            fScale = !fScale;
1728            this->inval(NULL);
1729            this->updateTitle();
1730            return true;
1731        default:
1732            break;
1733    }
1734
1735    if (fAppMenu->handleKeyEquivalent(uni)|| fSlideMenu->handleKeyEquivalent(uni)) {
1736        this->onUpdateMenu(fAppMenu);
1737        this->onUpdateMenu(fSlideMenu);
1738        return true;
1739    }
1740    return this->INHERITED::onHandleChar(uni);
1741}
1742
1743void SampleWindow::setDeviceType(DeviceType type) {
1744    if (type == fDeviceType)
1745        return;
1746
1747    fDevManager->tearDownBackend(this);
1748
1749    fDeviceType = type;
1750
1751    fDevManager->setUpBackend(this, fMSAASampleCount);
1752
1753    this->updateTitle();
1754    this->inval(NULL);
1755}
1756
1757void SampleWindow::toggleSlideshow() {
1758    fAnimating = !fAnimating;
1759    this->postAnimatingEvent();
1760    this->updateTitle();
1761}
1762
1763void SampleWindow::toggleRendering() {
1764    this->setDeviceType(cycle_devicetype(fDeviceType));
1765    this->updateTitle();
1766    this->inval(NULL);
1767}
1768
1769void SampleWindow::toggleFPS() {
1770    fMeasureFPS = !fMeasureFPS;
1771    this->updateTitle();
1772    this->inval(NULL);
1773}
1774
1775#include "SkDumpCanvas.h"
1776
1777bool SampleWindow::onHandleKey(SkKey key) {
1778    {
1779        SkView* view = curr_view(this);
1780        if (view) {
1781            SkEvent evt(gKeyEvtName);
1782            evt.setFast32(key);
1783            if (view->doQuery(&evt)) {
1784                return true;
1785            }
1786        }
1787    }
1788    switch (key) {
1789        case kRight_SkKey:
1790            if (this->nextSample()) {
1791                return true;
1792            }
1793            break;
1794        case kLeft_SkKey:
1795            toggleRendering();
1796            return true;
1797        case kUp_SkKey:
1798            if (USE_ARROWS_FOR_ZOOM) {
1799                this->changeZoomLevel(1.f);
1800            } else {
1801                fNClip = !fNClip;
1802                this->inval(NULL);
1803                this->updateTitle();
1804            }
1805            return true;
1806        case kDown_SkKey:
1807            if (USE_ARROWS_FOR_ZOOM) {
1808                this->changeZoomLevel(-1.f);
1809            } else {
1810                this->setConfig(cycle_configs(this->getBitmap().config()));
1811                this->updateTitle();
1812            }
1813            return true;
1814        case kOK_SkKey: {
1815            SkString title;
1816            if (curr_title(this, &title)) {
1817                writeTitleToPrefs(title.c_str());
1818            }
1819            return true;
1820        }
1821        case kBack_SkKey:
1822            this->showOverview();
1823            return true;
1824        default:
1825            break;
1826    }
1827    return this->INHERITED::onHandleKey(key);
1828}
1829
1830///////////////////////////////////////////////////////////////////////////////
1831
1832static const char gGestureClickType[] = "GestureClickType";
1833
1834bool SampleWindow::onDispatchClick(int x, int y, Click::State state,
1835        void* owner) {
1836    if (Click::kMoved_State == state) {
1837        updatePointer(x, y);
1838    }
1839    int w = SkScalarRound(this->width());
1840    int h = SkScalarRound(this->height());
1841
1842    // check for the resize-box
1843    if (w - x < 16 && h - y < 16) {
1844        return false;   // let the OS handle the click
1845    }
1846    else if (fMagnify) {
1847        //it's only necessary to update the drawing if there's a click
1848        this->inval(NULL);
1849        return false; //prevent dragging while magnify is enabled
1850    }
1851    else {
1852        return this->INHERITED::onDispatchClick(x, y, state, owner);
1853    }
1854}
1855
1856class GestureClick : public SkView::Click {
1857public:
1858    GestureClick(SkView* target) : SkView::Click(target) {
1859        this->setType(gGestureClickType);
1860    }
1861
1862    static bool IsGesture(Click* click) {
1863        return click->isType(gGestureClickType);
1864    }
1865};
1866
1867SkView::Click* SampleWindow::onFindClickHandler(SkScalar x, SkScalar y) {
1868    return new GestureClick(this);
1869}
1870
1871bool SampleWindow::onClick(Click* click) {
1872    if (GestureClick::IsGesture(click)) {
1873        float x = static_cast<float>(click->fICurr.fX);
1874        float y = static_cast<float>(click->fICurr.fY);
1875
1876        switch (click->fState) {
1877            case SkView::Click::kDown_State:
1878                fGesture.touchBegin(click->fOwner, x, y);
1879                break;
1880            case SkView::Click::kMoved_State:
1881                fGesture.touchMoved(click->fOwner, x, y);
1882                this->updateMatrix();
1883                break;
1884            case SkView::Click::kUp_State:
1885                fGesture.touchEnd(click->fOwner);
1886                this->updateMatrix();
1887                break;
1888        }
1889        return true;
1890    }
1891    return false;
1892}
1893
1894///////////////////////////////////////////////////////////////////////////////
1895
1896void SampleWindow::loadView(SkView* view) {
1897    SkView::F2BIter iter(this);
1898    SkView* prev = iter.next();
1899    if (prev) {
1900        prev->detachFromParent();
1901    }
1902
1903    view->setVisibleP(true);
1904    view->setClipToBounds(false);
1905    this->attachChildToFront(view)->unref();
1906    view->setSize(this->width(), this->height());
1907
1908    //repopulate the slide menu when a view is loaded
1909    fSlideMenu->reset();
1910#ifdef DEBUGGER
1911    if (!is_debugger(view) && !is_overview(view) && !is_transition(view) && fDebugger) {
1912        //Force Pipe to be on if using debugger
1913        fUsePipe = true;
1914    }
1915#endif
1916    (void)SampleView::SetUsePipe(view, fUsePipe);
1917    if (SampleView::IsSampleView(view))
1918        ((SampleView*)view)->requestMenu(fSlideMenu);
1919    this->onUpdateMenu(fSlideMenu);
1920    this->updateTitle();
1921}
1922
1923static const char* gConfigNames[] = {
1924    "unknown config",
1925    "A1",
1926    "A8",
1927    "Index8",
1928    "565",
1929    "4444",
1930    "8888"
1931};
1932
1933static const char* configToString(SkBitmap::Config c) {
1934    return gConfigNames[c];
1935}
1936
1937static const char* gDeviceTypePrefix[] = {
1938    "raster: ",
1939    "picture: ",
1940    "opengl: ",
1941#if SK_ANGLE
1942    "angle: ",
1943#endif
1944    "null-gl: "
1945};
1946
1947static const bool gDeviceTypeIsGPU[] = {
1948    false,
1949    false,
1950    true,
1951#if SK_ANGLE
1952    true,
1953#endif
1954    true
1955};
1956
1957static const char* trystate_str(SkOSMenu::TriState state,
1958                                const char trueStr[], const char falseStr[]) {
1959    if (SkOSMenu::kOnState == state) {
1960        return trueStr;
1961    } else if (SkOSMenu::kOffState == state) {
1962        return falseStr;
1963    }
1964    return NULL;
1965}
1966
1967void SampleWindow::updateTitle() {
1968    SkView* view = curr_view(this);
1969
1970    SkString title;
1971    if (!curr_title(this, &title)) {
1972        title.set("<unknown>");
1973    }
1974
1975    title.prepend(gDeviceTypePrefix[fDeviceType]);
1976
1977    title.prepend(" ");
1978    title.prepend(configToString(this->getBitmap().config()));
1979
1980    if (fAnimating) {
1981        title.prepend("<A> ");
1982    }
1983    if (fScale) {
1984        title.prepend("<S> ");
1985    }
1986    if (fRotate) {
1987        title.prepend("<R> ");
1988    }
1989    if (fNClip) {
1990        title.prepend("<C> ");
1991    }
1992    if (fPerspAnim) {
1993        title.prepend("<K> ");
1994    }
1995
1996    title.prepend(trystate_str(fLCDState, "LCD ", "lcd "));
1997    title.prepend(trystate_str(fAAState, "AA ", "aa "));
1998    title.prepend(trystate_str(fFilterState, "H ", "h "));
1999    title.prepend(fFlipAxis & kFlipAxis_X ? "X " : NULL);
2000    title.prepend(fFlipAxis & kFlipAxis_Y ? "Y " : NULL);
2001
2002    if (fZoomLevel) {
2003        title.prependf("{%.2f} ", SkScalarToFloat(fZoomLevel));
2004    }
2005
2006    if (fMeasureFPS) {
2007        title.appendf(" %6.1f ms", fMeasureFPS_Time / (float)FPS_REPEAT_MULTIPLIER);
2008    }
2009    if (fUsePipe && SampleView::IsSampleView(view)) {
2010        title.prepend("<P> ");
2011    }
2012    if (SampleView::IsSampleView(view)) {
2013        title.prepend("! ");
2014    }
2015
2016    if (gDeviceTypeIsGPU[fDeviceType] &&
2017        NULL != fDevManager &&
2018        fDevManager->getGrRenderTarget()->numSamples() > 0) {
2019        title.appendf(" [MSAA: %d]",
2020                       fDevManager->getGrRenderTarget()->numSamples());
2021    }
2022
2023    this->setTitle(title.c_str());
2024}
2025
2026void SampleWindow::onSizeChange() {
2027    this->INHERITED::onSizeChange();
2028
2029    SkView::F2BIter iter(this);
2030    SkView* view = iter.next();
2031    view->setSize(this->width(), this->height());
2032
2033    // rebuild our clippath
2034    {
2035        const SkScalar W = this->width();
2036        const SkScalar H = this->height();
2037
2038        fClipPath.reset();
2039#if 0
2040        for (SkScalar y = SK_Scalar1; y < H; y += SkIntToScalar(32)) {
2041            SkRect r;
2042            r.set(SK_Scalar1, y, SkIntToScalar(30), y + SkIntToScalar(30));
2043            for (; r.fLeft < W; r.offset(SkIntToScalar(32), 0))
2044                fClipPath.addRect(r);
2045        }
2046#else
2047        SkRect r;
2048        r.set(0, 0, W, H);
2049        fClipPath.addRect(r, SkPath::kCCW_Direction);
2050        r.set(W/4, H/4, W*3/4, H*3/4);
2051        fClipPath.addRect(r, SkPath::kCW_Direction);
2052#endif
2053    }
2054
2055    fZoomCenterX = SkScalarHalf(this->width());
2056    fZoomCenterY = SkScalarHalf(this->height());
2057
2058#ifdef SK_BUILD_FOR_ANDROID
2059    // FIXME: The first draw after a size change does not work on Android, so
2060    // we post an invalidate.
2061    this->postInvalDelay();
2062#endif
2063    this->updateTitle();    // to refresh our config
2064    fDevManager->windowSizeChanged(this);
2065}
2066
2067///////////////////////////////////////////////////////////////////////////////
2068
2069static const char is_sample_view_tag[] = "sample-is-sample-view";
2070static const char repeat_count_tag[] = "sample-set-repeat-count";
2071static const char set_use_pipe_tag[] = "sample-set-use-pipe";
2072
2073bool SampleView::IsSampleView(SkView* view) {
2074    SkEvent evt(is_sample_view_tag);
2075    return view->doQuery(&evt);
2076}
2077
2078bool SampleView::SetRepeatDraw(SkView* view, int count) {
2079    SkEvent evt(repeat_count_tag);
2080    evt.setFast32(count);
2081    return view->doEvent(evt);
2082}
2083
2084bool SampleView::SetUsePipe(SkView* view, bool pred) {
2085    SkEvent evt(set_use_pipe_tag);
2086    evt.setFast32(pred);
2087    return view->doEvent(evt);
2088}
2089
2090bool SampleView::onEvent(const SkEvent& evt) {
2091    if (evt.isType(repeat_count_tag)) {
2092        fRepeatCount = evt.getFast32();
2093        return true;
2094    }
2095    if (evt.isType(set_use_pipe_tag)) {
2096        fUsePipe = !!evt.getFast32();
2097        return true;
2098    }
2099    return this->INHERITED::onEvent(evt);
2100}
2101
2102bool SampleView::onQuery(SkEvent* evt) {
2103    if (evt->isType(is_sample_view_tag)) {
2104        return true;
2105    }
2106    return this->INHERITED::onQuery(evt);
2107}
2108
2109#ifdef TEST_GPIPE
2110    #include "SkGPipe.h"
2111
2112class SimplePC : public SkGPipeController {
2113public:
2114    SimplePC(SkCanvas* target);
2115    ~SimplePC();
2116
2117    /**
2118     * User this method to halt/restart pipe
2119     */
2120    void setWriteToPipe(bool writeToPipe) { fWriteToPipe = writeToPipe; }
2121    virtual void* requestBlock(size_t minRequest, size_t* actual);
2122    virtual void notifyWritten(size_t bytes);
2123
2124private:
2125    SkGPipeReader   fReader;
2126    void*           fBlock;
2127    size_t          fBlockSize;
2128    size_t          fBytesWritten;
2129    int             fAtomsWritten;
2130    SkGPipeReader::Status   fStatus;
2131    bool            fWriteToPipe;
2132
2133    size_t        fTotalWritten;
2134};
2135
2136SimplePC::SimplePC(SkCanvas* target) : fReader(target) {
2137    fBlock = NULL;
2138    fBlockSize = fBytesWritten = 0;
2139    fStatus = SkGPipeReader::kDone_Status;
2140    fTotalWritten = 0;
2141    fAtomsWritten = 0;
2142    fWriteToPipe = true;
2143}
2144
2145SimplePC::~SimplePC() {
2146//    SkASSERT(SkGPipeReader::kDone_Status == fStatus);
2147    if (fTotalWritten) {
2148        if (fWriteToPipe) {
2149            SkDebugf("--- %d bytes %d atoms, status %d\n", fTotalWritten,
2150                     fAtomsWritten, fStatus);
2151#ifdef  PIPE_FILE
2152            //File is open in append mode
2153            FILE* f = fopen(FILE_PATH, "ab");
2154            SkASSERT(f != NULL);
2155            fwrite((const char*)fBlock + fBytesWritten, 1, bytes, f);
2156            fclose(f);
2157#endif
2158#ifdef PIPE_NET
2159            if (fAtomsWritten > 1 && fTotalWritten > 4) { //ignore done
2160                gServer.acceptConnections();
2161                gServer.writePacket(fBlock, fTotalWritten);
2162            }
2163#endif
2164#ifdef  DEBUGGER
2165            gTempDataStore.reset();
2166            gTempDataStore.append(fTotalWritten, (const char*)fBlock);
2167#endif
2168        }
2169    }
2170    sk_free(fBlock);
2171}
2172
2173void* SimplePC::requestBlock(size_t minRequest, size_t* actual) {
2174    sk_free(fBlock);
2175
2176    fBlockSize = minRequest * 4;
2177    fBlock = sk_malloc_throw(fBlockSize);
2178    fBytesWritten = 0;
2179    *actual = fBlockSize;
2180    return fBlock;
2181}
2182
2183void SimplePC::notifyWritten(size_t bytes) {
2184    SkASSERT(fBytesWritten + bytes <= fBlockSize);
2185    fStatus = fReader.playback((const char*)fBlock + fBytesWritten, bytes);
2186    SkASSERT(SkGPipeReader::kError_Status != fStatus);
2187    fBytesWritten += bytes;
2188    fTotalWritten += bytes;
2189
2190    fAtomsWritten += 1;
2191}
2192
2193#endif
2194
2195void SampleView::draw(SkCanvas* canvas) {
2196#ifdef TEST_GPIPE
2197    if (fUsePipe) {
2198        SkGPipeWriter writer;
2199        SimplePC controller(canvas);
2200        uint32_t flags = SkGPipeWriter::kCrossProcess_Flag;
2201        canvas = writer.startRecording(&controller, flags);
2202        //Must draw before controller goes out of scope and sends data
2203        this->INHERITED::draw(canvas);
2204        //explicitly end recording to ensure writer is flushed before the memory
2205        //is freed in the deconstructor of the controller
2206        writer.endRecording();
2207        controller.setWriteToPipe(fUsePipe);
2208    }
2209    else
2210        this->INHERITED::draw(canvas);
2211#else
2212    this->INHERITED::draw(canvas);
2213#endif
2214}
2215void SampleView::onDraw(SkCanvas* canvas) {
2216    this->onDrawBackground(canvas);
2217
2218    for (int i = 0; i < fRepeatCount; i++) {
2219        SkAutoCanvasRestore acr(canvas, true);
2220        this->onDrawContent(canvas);
2221    }
2222}
2223
2224void SampleView::onDrawBackground(SkCanvas* canvas) {
2225    canvas->drawColor(fBGColor);
2226}
2227
2228///////////////////////////////////////////////////////////////////////////////
2229
2230template <typename T> void SkTBSort(T array[], int count) {
2231    for (int i = 1; i < count - 1; i++) {
2232        bool didSwap = false;
2233        for (int j = count - 1; j > i; --j) {
2234            if (array[j] < array[j-1]) {
2235                T tmp(array[j-1]);
2236                array[j-1] = array[j];
2237                array[j] = tmp;
2238                didSwap = true;
2239            }
2240        }
2241        if (!didSwap) {
2242            break;
2243        }
2244    }
2245
2246    for (int k = 0; k < count - 1; k++) {
2247        SkASSERT(!(array[k+1] < array[k]));
2248    }
2249}
2250
2251#include "SkRandom.h"
2252
2253static void rand_rect(SkIRect* rect, SkRandom& rand) {
2254    int bits = 8;
2255    int shift = 32 - bits;
2256    rect->set(rand.nextU() >> shift, rand.nextU() >> shift,
2257              rand.nextU() >> shift, rand.nextU() >> shift);
2258    rect->sort();
2259}
2260
2261static void dumpRect(const SkIRect& r) {
2262    SkDebugf(" { %d, %d, %d, %d },\n",
2263             r.fLeft, r.fTop,
2264             r.fRight, r.fBottom);
2265}
2266
2267static void test_rects(const SkIRect rect[], int count) {
2268    SkRegion rgn0, rgn1;
2269
2270    for (int i = 0; i < count; i++) {
2271        rgn0.op(rect[i], SkRegion::kUnion_Op);
2272     //   dumpRect(rect[i]);
2273    }
2274    rgn1.setRects(rect, count);
2275
2276    if (rgn0 != rgn1) {
2277        SkDebugf("\n");
2278        for (int i = 0; i < count; i++) {
2279            dumpRect(rect[i]);
2280        }
2281        SkDebugf("\n");
2282    }
2283}
2284
2285static void test() {
2286    size_t i;
2287
2288    const SkIRect r0[] = {
2289        { 0, 0, 1, 1 },
2290        { 2, 2, 3, 3 },
2291    };
2292    const SkIRect r1[] = {
2293        { 0, 0, 1, 3 },
2294        { 1, 1, 2, 2 },
2295        { 2, 0, 3, 3 },
2296    };
2297    const SkIRect r2[] = {
2298        { 0, 0, 1, 2 },
2299        { 2, 1, 3, 3 },
2300        { 4, 0, 5, 1 },
2301        { 6, 0, 7, 4 },
2302    };
2303
2304    static const struct {
2305        const SkIRect* fRects;
2306        int            fCount;
2307    } gRecs[] = {
2308        { r0, SK_ARRAY_COUNT(r0) },
2309        { r1, SK_ARRAY_COUNT(r1) },
2310        { r2, SK_ARRAY_COUNT(r2) },
2311    };
2312
2313    for (i = 0; i < SK_ARRAY_COUNT(gRecs); i++) {
2314        test_rects(gRecs[i].fRects, gRecs[i].fCount);
2315    }
2316
2317    SkRandom rand;
2318    for (i = 0; i < 10000; i++) {
2319        SkRegion rgn0, rgn1;
2320
2321        const int N = 8;
2322        SkIRect rect[N];
2323        for (int j = 0; j < N; j++) {
2324            rand_rect(&rect[j], rand);
2325        }
2326        test_rects(rect, N);
2327    }
2328}
2329
2330SkOSWindow* create_sk_window(void* hwnd, int argc, char** argv) {
2331//    test();
2332    return new SampleWindow(hwnd, argc, argv, NULL);
2333}
2334
2335void get_preferred_size(int* x, int* y, int* width, int* height) {
2336    *x = 10;
2337    *y = 50;
2338    *width = 640;
2339    *height = 480;
2340}
2341
2342void application_init() {
2343//    setenv("ANDROID_ROOT", "../../../data", 0);
2344#ifdef SK_BUILD_FOR_MAC
2345    setenv("ANDROID_ROOT", "/android/device/data", 0);
2346#endif
2347    SkGraphics::Init();
2348    SkEvent::Init();
2349}
2350
2351void application_term() {
2352    SkEvent::Term();
2353    SkGraphics::Term();
2354}
2355