SampleApp.cpp revision 3055b700189afdd02486ed8f2279cea1d8897243 
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 1
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->setFilterBitmap(SkOSMenu::kOnState == fFilterState);
509        }
510        if (SkOSMenu::kMixedState != fSubpixelState) {
511            paint->setSubpixelText(SkOSMenu::kOnState == fSubpixelState);
512        }
513        if (0 != fHintingState && fHintingState < (int)SK_ARRAY_COUNT(gHintingStates)) {
514            paint->setHinting(gHintingStates[fHintingState].hinting);
515        }
516        return true;
517    }
518
519private:
520    SkOSMenu::TriState  fLCDState;
521    SkOSMenu::TriState  fAAState;
522    SkOSMenu::TriState  fFilterState;
523    SkOSMenu::TriState  fSubpixelState;
524    int fHintingState;
525};
526
527//////////////////////////////////////////////////////////////////////////////
528
529#define MAX_ZOOM_LEVEL  8
530#define MIN_ZOOM_LEVEL  -8
531
532static const char gCharEvtName[] = "SampleCode_Char_Event";
533static const char gKeyEvtName[] = "SampleCode_Key_Event";
534static const char gTitleEvtName[] = "SampleCode_Title_Event";
535static const char gPrefSizeEvtName[] = "SampleCode_PrefSize_Event";
536static const char gFastTextEvtName[] = "SampleCode_FastText_Event";
537static const char gUpdateWindowTitleEvtName[] = "SampleCode_UpdateWindowTitle";
538
539bool SampleCode::CharQ(const SkEvent& evt, SkUnichar* outUni) {
540    if (evt.isType(gCharEvtName, sizeof(gCharEvtName) - 1)) {
541        if (outUni) {
542            *outUni = evt.getFast32();
543        }
544        return true;
545    }
546    return false;
547}
548
549bool SampleCode::KeyQ(const SkEvent& evt, SkKey* outKey) {
550    if (evt.isType(gKeyEvtName, sizeof(gKeyEvtName) - 1)) {
551        if (outKey) {
552            *outKey = (SkKey)evt.getFast32();
553        }
554        return true;
555    }
556    return false;
557}
558
559bool SampleCode::TitleQ(const SkEvent& evt) {
560    return evt.isType(gTitleEvtName, sizeof(gTitleEvtName) - 1);
561}
562
563void SampleCode::TitleR(SkEvent* evt, const char title[]) {
564    SkASSERT(evt && TitleQ(*evt));
565    evt->setString(gTitleEvtName, title);
566}
567
568bool SampleCode::RequestTitle(SkView* view, SkString* title) {
569    SkEvent evt(gTitleEvtName);
570    if (view->doQuery(&evt)) {
571        title->set(evt.findString(gTitleEvtName));
572        return true;
573    }
574    return false;
575}
576
577bool SampleCode::PrefSizeQ(const SkEvent& evt) {
578    return evt.isType(gPrefSizeEvtName, sizeof(gPrefSizeEvtName) - 1);
579}
580
581void SampleCode::PrefSizeR(SkEvent* evt, SkScalar width, SkScalar height) {
582    SkASSERT(evt && PrefSizeQ(*evt));
583    SkScalar size[2];
584    size[0] = width;
585    size[1] = height;
586    evt->setScalars(gPrefSizeEvtName, 2, size);
587}
588
589bool SampleCode::FastTextQ(const SkEvent& evt) {
590    return evt.isType(gFastTextEvtName, sizeof(gFastTextEvtName) - 1);
591}
592
593///////////////////////////////////////////////////////////////////////////////
594
595static SkMSec gAnimTime;
596static SkMSec gAnimTimePrev;
597
598SkMSec SampleCode::GetAnimTime() { return gAnimTime; }
599SkMSec SampleCode::GetAnimTimeDelta() { return gAnimTime - gAnimTimePrev; }
600SkScalar SampleCode::GetAnimSecondsDelta() {
601    return SkDoubleToScalar(GetAnimTimeDelta() / 1000.0);
602}
603
604SkScalar SampleCode::GetAnimScalar(SkScalar speed, SkScalar period) {
605    // since gAnimTime can be up to 32 bits, we can't convert it to a float
606    // or we'll lose the low bits. Hence we use doubles for the intermediate
607    // calculations
608    double seconds = (double)gAnimTime / 1000.0;
609    double value = SkScalarToDouble(speed) * seconds;
610    if (period) {
611        value = ::fmod(value, SkScalarToDouble(period));
612    }
613    return SkDoubleToScalar(value);
614}
615
616SkScalar SampleCode::GetAnimSinScalar(SkScalar amplitude,
617                                      SkScalar periodInSec,
618                                      SkScalar phaseInSec) {
619    if (!periodInSec) {
620        return 0;
621    }
622    double t = (double)gAnimTime / 1000.0 + phaseInSec;
623    t *= SkScalarToFloat(2 * SK_ScalarPI) / periodInSec;
624    amplitude = SK_ScalarHalf * amplitude;
625    return SkScalarMul(amplitude, SkDoubleToScalar(sin(t))) + amplitude;
626}
627
628GrContext* SampleCode::GetGr() {
629    return gSampleWindow ? gSampleWindow->getGrContext() : NULL;
630}
631
632// some GMs rely on having a skiagm::GetGr function defined
633namespace skiagm {
634    // FIXME: this should be moved into a header
635    GrContext* GetGr();
636    GrContext* GetGr() { return SampleCode::GetGr(); }
637}
638
639//////////////////////////////////////////////////////////////////////////////
640
641static SkView* curr_view(SkWindow* wind) {
642    SkView::F2BIter iter(wind);
643    return iter.next();
644}
645
646static bool curr_title(SkWindow* wind, SkString* title) {
647    SkView* view = curr_view(wind);
648    if (view) {
649        SkEvent evt(gTitleEvtName);
650        if (view->doQuery(&evt)) {
651            title->set(evt.findString(gTitleEvtName));
652            return true;
653        }
654    }
655    return false;
656}
657
658void SampleWindow::setZoomCenter(float x, float y)
659{
660    fZoomCenterX = SkFloatToScalar(x);
661    fZoomCenterY = SkFloatToScalar(y);
662}
663
664bool SampleWindow::zoomIn()
665{
666    // Arbitrarily decided
667    if (fFatBitsScale == 25) return false;
668    fFatBitsScale++;
669    this->inval(NULL);
670    return true;
671}
672
673bool SampleWindow::zoomOut()
674{
675    if (fFatBitsScale == 1) return false;
676    fFatBitsScale--;
677    this->inval(NULL);
678    return true;
679}
680
681void SampleWindow::updatePointer(int x, int y)
682{
683    fMouseX = x;
684    fMouseY = y;
685    if (fShowZoomer) {
686        this->inval(NULL);
687    }
688}
689
690static inline SampleWindow::DeviceType cycle_devicetype(SampleWindow::DeviceType ct) {
691    static const SampleWindow::DeviceType gCT[] = {
692        SampleWindow::kPicture_DeviceType,
693#if SK_SUPPORT_GPU
694        SampleWindow::kGPU_DeviceType,
695#if SK_ANGLE
696        SampleWindow::kANGLE_DeviceType,
697#endif // SK_ANGLE
698        SampleWindow::kRaster_DeviceType, // skip the null gpu device in normal cycling
699#endif // SK_SUPPORT_GPU
700        SampleWindow::kRaster_DeviceType
701    };
702    SK_COMPILE_ASSERT(SK_ARRAY_COUNT(gCT) == SampleWindow::kDeviceTypeCnt, array_size_mismatch);
703    return gCT[ct];
704}
705
706static void usage(const char * argv0) {
707    SkDebugf("%s [--slide sampleName] [-i resourcePath] [--msaa sampleCount] [--pictureDir dirPath] [--picture path] [--sort]\n", argv0);
708#ifdef SAMPLE_PDF_FILE_VIEWER
709    SkDebugf("                [--pdfDir pdfPath]\n");
710    SkDebugf("    pdfPath: path to directory pdf files are read from\n");
711#endif  // SAMPLE_PDF_FILE_VIEWER
712    SkDebugf("    sampleName: sample at which to start.\n");
713    SkDebugf("    resourcePath: directory that stores image resources.\n");
714    SkDebugf("    msaa: request multisampling with the given sample count.\n");
715    SkDebugf("    dirPath: path to directory skia pictures are read from\n");
716    SkDebugf("    path: path to skia picture\n");
717    SkDebugf("    --sort: sort samples by title, this would help to compare pdf rendering (P:foo.pdf) with skp rendering (P:foo.pdf)\n");
718}
719
720static SkString getSampleTitle(const SkViewFactory* sampleFactory) {
721    SkView* view = (*sampleFactory)();
722    SkString title;
723    SampleCode::RequestTitle(view, &title);
724    view->unref();
725    return title;
726}
727
728static bool compareSampleTitle(const SkViewFactory* first, const SkViewFactory* second) {
729    return strcmp(getSampleTitle(first).c_str(), getSampleTitle(second).c_str()) < 0;
730}
731
732SampleWindow::SampleWindow(void* hwnd, int argc, char** argv, DeviceManager* devManager)
733    : INHERITED(hwnd)
734    , fDevManager(NULL) {
735
736    fCurrIndex = -1;
737
738    this->registerPictFileSamples(argv, argc);
739    this->registerPictFileSample(argv, argc);
740#ifdef SAMPLE_PDF_FILE_VIEWER
741    this->registerPdfFileViewerSamples(argv, argc);
742#endif  // SAMPLE_PDF_FILE_VIEWER
743    SkGMRegistyToSampleRegistry();
744    {
745        const SkViewRegister* reg = SkViewRegister::Head();
746        while (reg) {
747            *fSamples.append() = reg->factory();
748            reg = reg->next();
749        }
750    }
751
752    bool sort = false;
753    for (int i = 0; i < argc; ++i) {
754        if (!strcmp(argv[i], "--sort")) {
755            sort = true;
756            break;
757        }
758    }
759
760    if (sort) {
761        // Sort samples, so foo.skp and foo.pdf are consecutive and we can quickly spot where
762        // skp -> pdf -> png fails.
763        SkTQSort(fSamples.begin(), fSamples.end() ? fSamples.end() - 1 : NULL, compareSampleTitle);
764    }
765
766    const char* resourcePath = NULL;
767    fMSAASampleCount = 0;
768
769    const char* const commandName = argv[0];
770    char* const* stop = argv + argc;
771    for (++argv; argv < stop; ++argv) {
772        if (strcmp(*argv, "-i") == 0) {
773            argv++;
774            if (argv < stop && **argv) {
775                resourcePath = *argv;
776            }
777        } else if (strcmp(*argv, "--slide") == 0) {
778            argv++;
779            if (argv < stop && **argv) {
780                fCurrIndex = findByTitle(*argv);
781                if (fCurrIndex < 0) {
782                    fprintf(stderr, "Unknown sample \"%s\"\n", *argv);
783                    listTitles();
784                }
785            }
786        } else if (strcmp(*argv, "--msaa") == 0) {
787            ++argv;
788            if (argv < stop && **argv) {
789                fMSAASampleCount = atoi(*argv);
790            }
791        } else if (strcmp(*argv, "--list") == 0) {
792            listTitles();
793        }
794        else {
795            usage(commandName);
796        }
797    }
798
799    if (fCurrIndex < 0) {
800        SkString title;
801        if (readTitleFromPrefs(&title)) {
802            fCurrIndex = findByTitle(title.c_str());
803        }
804    }
805
806    if (fCurrIndex < 0) {
807        fCurrIndex = 0;
808    }
809
810    gSampleWindow = this;
811
812#ifdef  PIPE_FILE
813    //Clear existing file or create file if it doesn't exist
814    FILE* f = fopen(FILE_PATH, "wb");
815    fclose(f);
816#endif
817
818    fPicture = NULL;
819
820    fDeviceType = kRaster_DeviceType;
821
822#if DEFAULT_TO_GPU
823    fDeviceType = kGPU_DeviceType;
824#endif
825#if SK_ANGLE && DEFAULT_TO_ANGLE
826    fDeviceType = kANGLE_DeviceType;
827#endif
828
829    fUseClip = false;
830    fNClip = false;
831    fAnimating = false;
832    fRotate = false;
833    fRotateAnimTime = 0;
834    fPerspAnim = false;
835    fPerspAnimTime = 0;
836    fRequestGrabImage = false;
837    fPipeState = SkOSMenu::kOffState;
838    fTilingState = SkOSMenu::kOffState;
839    fTileCount.set(1, 1);
840    fMeasureFPS = false;
841    fLCDState = SkOSMenu::kMixedState;
842    fAAState = SkOSMenu::kMixedState;
843    fFilterState = SkOSMenu::kMixedState;
844    fSubpixelState = SkOSMenu::kMixedState;
845    fHintingState = 0;
846    fFlipAxis = 0;
847    fScrollTestX = fScrollTestY = 0;
848
849    fMouseX = fMouseY = 0;
850    fFatBitsScale = 8;
851    fTypeface = SkTypeface::CreateFromTypeface(NULL, SkTypeface::kBold);
852    fShowZoomer = false;
853
854    fZoomLevel = 0;
855    fZoomScale = SK_Scalar1;
856
857    fMagnify = false;
858
859    fSaveToPdf = false;
860    fPdfCanvas = NULL;
861
862    fTransitionNext = 6;
863    fTransitionPrev = 2;
864
865    int sinkID = this->getSinkID();
866    fAppMenu = new SkOSMenu;
867    fAppMenu->setTitle("Global Settings");
868    int itemID;
869
870    itemID =fAppMenu->appendList("Device Type", "Device Type", sinkID, 0,
871                                "Raster", "Picture", "OpenGL",
872#if SK_ANGLE
873                                "ANGLE",
874#endif
875                                NULL);
876    fAppMenu->assignKeyEquivalentToItem(itemID, 'd');
877    itemID = fAppMenu->appendTriState("AA", "AA", sinkID, fAAState);
878    fAppMenu->assignKeyEquivalentToItem(itemID, 'b');
879    itemID = fAppMenu->appendTriState("LCD", "LCD", sinkID, fLCDState);
880    fAppMenu->assignKeyEquivalentToItem(itemID, 'l');
881    itemID = fAppMenu->appendTriState("Filter", "Filter", sinkID, fFilterState);
882    fAppMenu->assignKeyEquivalentToItem(itemID, 'n');
883    itemID = fAppMenu->appendTriState("Subpixel", "Subpixel", sinkID, fSubpixelState);
884    fAppMenu->assignKeyEquivalentToItem(itemID, 's');
885    itemID = fAppMenu->appendList("Hinting", "Hinting", sinkID, fHintingState,
886                                  gHintingStates[0].name,
887                                  gHintingStates[1].name,
888                                  gHintingStates[2].name,
889                                  gHintingStates[3].name,
890                                  gHintingStates[4].name,
891                                  NULL);
892    fAppMenu->assignKeyEquivalentToItem(itemID, 'h');
893
894    fUsePipeMenuItemID = fAppMenu->appendTriState("Pipe", "Pipe" , sinkID,
895                                                  fPipeState);
896    fAppMenu->assignKeyEquivalentToItem(fUsePipeMenuItemID, 'P');
897
898    itemID = fAppMenu->appendTriState("Tiling", "Tiling", sinkID, fTilingState);
899    fAppMenu->assignKeyEquivalentToItem(itemID, 't');
900
901    itemID = fAppMenu->appendSwitch("Slide Show", "Slide Show" , sinkID, false);
902    fAppMenu->assignKeyEquivalentToItem(itemID, 'a');
903    itemID = fAppMenu->appendSwitch("Clip", "Clip" , sinkID, fUseClip);
904    fAppMenu->assignKeyEquivalentToItem(itemID, 'c');
905    itemID = fAppMenu->appendSwitch("Flip X", "Flip X" , sinkID, false);
906    fAppMenu->assignKeyEquivalentToItem(itemID, 'x');
907    itemID = fAppMenu->appendSwitch("Flip Y", "Flip Y" , sinkID, false);
908    fAppMenu->assignKeyEquivalentToItem(itemID, 'y');
909    itemID = fAppMenu->appendSwitch("Zoomer", "Zoomer" , sinkID, fShowZoomer);
910    fAppMenu->assignKeyEquivalentToItem(itemID, 'z');
911    itemID = fAppMenu->appendSwitch("Magnify", "Magnify" , sinkID, fMagnify);
912    fAppMenu->assignKeyEquivalentToItem(itemID, 'm');
913    itemID =fAppMenu->appendList("Transition-Next", "Transition-Next", sinkID,
914                                fTransitionNext, "Up", "Up and Right", "Right",
915                                "Down and Right", "Down", "Down and Left",
916                                "Left", "Up and Left", NULL);
917    fAppMenu->assignKeyEquivalentToItem(itemID, 'j');
918    itemID =fAppMenu->appendList("Transition-Prev", "Transition-Prev", sinkID,
919                                fTransitionPrev, "Up", "Up and Right", "Right",
920                                "Down and Right", "Down", "Down and Left",
921                                "Left", "Up and Left", NULL);
922    fAppMenu->assignKeyEquivalentToItem(itemID, 'k');
923    itemID = fAppMenu->appendAction("Save to PDF", sinkID);
924    fAppMenu->assignKeyEquivalentToItem(itemID, 'e');
925
926    this->addMenu(fAppMenu);
927    fSlideMenu = new SkOSMenu;
928    this->addMenu(fSlideMenu);
929
930//    this->setConfig(SkBitmap::kRGB_565_Config);
931    this->setConfig(SkBitmap::kARGB_8888_Config);
932    this->setVisibleP(true);
933    this->setClipToBounds(false);
934
935    skiagm::GM::SetResourcePath(resourcePath);
936
937    this->loadView((*fSamples[fCurrIndex])());
938
939    fPDFData = NULL;
940
941    if (NULL == devManager) {
942        fDevManager = new DefaultDeviceManager();
943    } else {
944        devManager->ref();
945        fDevManager = devManager;
946    }
947    fDevManager->setUpBackend(this, fMSAASampleCount);
948
949    // If another constructor set our dimensions, ensure that our
950    // onSizeChange gets called.
951    if (this->height() && this->width()) {
952        this->onSizeChange();
953    }
954
955    // can't call this synchronously, since it may require a subclass to
956    // to implement, or the caller may need us to have returned from the
957    // constructor first. Hence we post an event to ourselves.
958//    this->updateTitle();
959    postEventToSink(new SkEvent(gUpdateWindowTitleEvtName), this);
960}
961
962SampleWindow::~SampleWindow() {
963    delete fPicture;
964    delete fPdfCanvas;
965    fTypeface->unref();
966
967    SkSafeUnref(fDevManager);
968}
969
970static void make_filepath(SkString* path, const char* dir, const SkString& name) {
971    size_t len = strlen(dir);
972    path->set(dir);
973    if (len > 0 && dir[len - 1] != '/') {
974        path->append("/");
975    }
976    path->append(name);
977}
978
979void SampleWindow::registerPictFileSample(char** argv, int argc) {
980    const char* pict = NULL;
981
982    for (int i = 0; i < argc; ++i) {
983        if (!strcmp(argv[i], "--picture")) {
984            i += 1;
985            if (i < argc) {
986                pict = argv[i];
987                break;
988            }
989        }
990    }
991    if (pict) {
992        SkString path(pict);
993        fCurrIndex = fSamples.count();
994        *fSamples.append() = new PictFileFactory(path);
995    }
996}
997
998void SampleWindow::registerPictFileSamples(char** argv, int argc) {
999    const char* pictDir = NULL;
1000
1001    for (int i = 0; i < argc; ++i) {
1002        if (!strcmp(argv[i], "--pictureDir")) {
1003            i += 1;
1004            if (i < argc) {
1005                pictDir = argv[i];
1006                break;
1007            }
1008        }
1009    }
1010    if (pictDir) {
1011        SkOSFile::Iter iter(pictDir, "skp");
1012        SkString filename;
1013        while (iter.next(&filename)) {
1014            SkString path;
1015            make_filepath(&path, pictDir, filename);
1016            *fSamples.append() = new PictFileFactory(path);
1017        }
1018    }
1019}
1020
1021#ifdef SAMPLE_PDF_FILE_VIEWER
1022void SampleWindow::registerPdfFileViewerSamples(char** argv, int argc) {
1023    const char* pdfDir = NULL;
1024
1025    for (int i = 0; i < argc; ++i) {
1026        if (!strcmp(argv[i], "--pdfDir")) {
1027            i += 1;
1028            if (i < argc) {
1029                pdfDir = argv[i];
1030                break;
1031            }
1032        }
1033    }
1034    if (pdfDir) {
1035        SkOSFile::Iter iter(pdfDir, "pdf");
1036        SkString filename;
1037        while (iter.next(&filename)) {
1038            SkString path;
1039            make_filepath(&path, pdfDir, filename);
1040            *fSamples.append() = new PdfFileViewerFactory(path);
1041        }
1042    }
1043}
1044#endif  // SAMPLE_PDF_FILE_VIEWER
1045
1046
1047int SampleWindow::findByTitle(const char title[]) {
1048    int i, count = fSamples.count();
1049    for (i = 0; i < count; i++) {
1050        if (getSampleTitle(i).equals(title)) {
1051            return i;
1052        }
1053    }
1054    return -1;
1055}
1056
1057void SampleWindow::listTitles() {
1058    int count = fSamples.count();
1059    SkDebugf("All Slides:\n");
1060    for (int i = 0; i < count; i++) {
1061        SkDebugf("    %s\n", getSampleTitle(i).c_str());
1062    }
1063}
1064
1065static SkBitmap capture_bitmap(SkCanvas* canvas) {
1066    SkBitmap bm;
1067    const SkBitmap& src = canvas->getDevice()->accessBitmap(false);
1068    src.copyTo(&bm, src.config());
1069    return bm;
1070}
1071
1072static bool bitmap_diff(SkCanvas* canvas, const SkBitmap& orig,
1073                        SkBitmap* diff) {
1074    const SkBitmap& src = canvas->getDevice()->accessBitmap(false);
1075
1076    SkAutoLockPixels alp0(src);
1077    SkAutoLockPixels alp1(orig);
1078    for (int y = 0; y < src.height(); y++) {
1079        const void* srcP = src.getAddr(0, y);
1080        const void* origP = orig.getAddr(0, y);
1081        size_t bytes = src.width() * src.bytesPerPixel();
1082        if (memcmp(srcP, origP, bytes)) {
1083            SkDebugf("---------- difference on line %d\n", y);
1084            return true;
1085        }
1086    }
1087    return false;
1088}
1089
1090static void drawText(SkCanvas* canvas, SkString string, SkScalar left, SkScalar top, SkPaint& paint)
1091{
1092    SkColor desiredColor = paint.getColor();
1093    paint.setColor(SK_ColorWHITE);
1094    const char* c_str = string.c_str();
1095    size_t size = string.size();
1096    SkRect bounds;
1097    paint.measureText(c_str, size, &bounds);
1098    bounds.offset(left, top);
1099    SkScalar inset = SkIntToScalar(-2);
1100    bounds.inset(inset, inset);
1101    canvas->drawRect(bounds, paint);
1102    if (desiredColor != SK_ColorBLACK) {
1103        paint.setColor(SK_ColorBLACK);
1104        canvas->drawText(c_str, size, left + SK_Scalar1, top + SK_Scalar1, paint);
1105    }
1106    paint.setColor(desiredColor);
1107    canvas->drawText(c_str, size, left, top, paint);
1108}
1109
1110#define XCLIP_N  8
1111#define YCLIP_N  8
1112
1113void SampleWindow::draw(SkCanvas* canvas) {
1114    // update the animation time
1115    if (!gAnimTimePrev && !gAnimTime) {
1116        // first time make delta be 0
1117        gAnimTime = SkTime::GetMSecs();
1118        gAnimTimePrev = gAnimTime;
1119    } else {
1120        gAnimTimePrev = gAnimTime;
1121        gAnimTime = SkTime::GetMSecs();
1122    }
1123
1124    if (fGesture.isActive()) {
1125        this->updateMatrix();
1126    }
1127
1128    if (fMeasureFPS) {
1129        fMeasureFPS_Time = 0;
1130    }
1131
1132    if (fNClip) {
1133        this->INHERITED::draw(canvas);
1134        SkBitmap orig = capture_bitmap(canvas);
1135
1136        const SkScalar w = this->width();
1137        const SkScalar h = this->height();
1138        const SkScalar cw = w / XCLIP_N;
1139        const SkScalar ch = h / YCLIP_N;
1140        for (int y = 0; y < YCLIP_N; y++) {
1141            SkRect r;
1142            r.fTop = y * ch;
1143            r.fBottom = (y + 1) * ch;
1144            if (y == YCLIP_N - 1) {
1145                r.fBottom = h;
1146            }
1147            for (int x = 0; x < XCLIP_N; x++) {
1148                SkAutoCanvasRestore acr(canvas, true);
1149                r.fLeft = x * cw;
1150                r.fRight = (x + 1) * cw;
1151                if (x == XCLIP_N - 1) {
1152                    r.fRight = w;
1153                }
1154                canvas->clipRect(r);
1155                this->INHERITED::draw(canvas);
1156            }
1157        }
1158
1159        SkBitmap diff;
1160        if (bitmap_diff(canvas, orig, &diff)) {
1161        }
1162    } else {
1163        const SkScalar cw = SkScalarDiv(this->width(), SkIntToScalar(fTileCount.width()));
1164        const SkScalar ch = SkScalarDiv(this->height(), SkIntToScalar(fTileCount.height()));
1165
1166        for (int y = 0; y < fTileCount.height(); ++y) {
1167            for (int x = 0; x < fTileCount.width(); ++x) {
1168                SkAutoCanvasRestore acr(canvas, true);
1169                canvas->clipRect(SkRect::MakeXYWH(x * cw, y * ch, cw, ch));
1170                this->INHERITED::draw(canvas);
1171            }
1172        }
1173
1174        if (!fTileCount.equals(1, 1)) {
1175            SkPaint paint;
1176            paint.setColor(0x60FF00FF);
1177            paint.setStyle(SkPaint::kStroke_Style);
1178            for (int y = 0; y < fTileCount.height(); ++y) {
1179                for (int x = 0; x < fTileCount.width(); ++x) {
1180                    canvas->drawRect(SkRect::MakeXYWH(x * cw, y * ch, cw, ch), paint);
1181                }
1182            }
1183        }
1184    }
1185    if (fShowZoomer && !fSaveToPdf) {
1186        showZoomer(canvas);
1187    }
1188    if (fMagnify && !fSaveToPdf) {
1189        magnify(canvas);
1190    }
1191
1192    if (fMeasureFPS && fMeasureFPS_Time) {
1193        this->updateTitle();
1194        this->postInvalDelay();
1195    }
1196
1197    // do this last
1198    fDevManager->publishCanvas(fDeviceType, canvas, this);
1199}
1200
1201static float clipW = 200;
1202static float clipH = 200;
1203void SampleWindow::magnify(SkCanvas* canvas) {
1204    SkRect r;
1205    int count = canvas->save();
1206
1207    SkMatrix m = canvas->getTotalMatrix();
1208    if (!m.invert(&m)) {
1209        return;
1210    }
1211    SkPoint offset, center;
1212    SkScalar mouseX = fMouseX * SK_Scalar1;
1213    SkScalar mouseY = fMouseY * SK_Scalar1;
1214    m.mapXY(mouseX - clipW/2, mouseY - clipH/2, &offset);
1215    m.mapXY(mouseX, mouseY, &center);
1216
1217    r.set(0, 0, clipW * m.getScaleX(), clipH * m.getScaleX());
1218    r.offset(offset.fX, offset.fY);
1219
1220    SkPaint paint;
1221    paint.setColor(0xFF66AAEE);
1222    paint.setStyle(SkPaint::kStroke_Style);
1223    paint.setStrokeWidth(10.f * m.getScaleX());
1224    //lense offset
1225    //canvas->translate(0, -250);
1226    canvas->drawRect(r, paint);
1227    canvas->clipRect(r);
1228
1229    m = canvas->getTotalMatrix();
1230    m.setTranslate(-center.fX, -center.fY);
1231    m.postScale(0.5f * fFatBitsScale, 0.5f * fFatBitsScale);
1232    m.postTranslate(center.fX, center.fY);
1233    canvas->concat(m);
1234
1235    this->INHERITED::draw(canvas);
1236
1237    canvas->restoreToCount(count);
1238}
1239
1240void SampleWindow::showZoomer(SkCanvas* canvas) {
1241        int count = canvas->save();
1242        canvas->resetMatrix();
1243        // Ensure the mouse position is on screen.
1244        int width = SkScalarRound(this->width());
1245        int height = SkScalarRound(this->height());
1246        if (fMouseX >= width) fMouseX = width - 1;
1247        else if (fMouseX < 0) fMouseX = 0;
1248        if (fMouseY >= height) fMouseY = height - 1;
1249        else if (fMouseY < 0) fMouseY = 0;
1250
1251        SkBitmap bitmap = capture_bitmap(canvas);
1252        bitmap.lockPixels();
1253
1254        // Find the size of the zoomed in view, forced to be odd, so the examined pixel is in the middle.
1255        int zoomedWidth = (width >> 1) | 1;
1256        int zoomedHeight = (height >> 1) | 1;
1257        SkIRect src;
1258        src.set(0, 0, zoomedWidth / fFatBitsScale, zoomedHeight / fFatBitsScale);
1259        src.offset(fMouseX - (src.width()>>1), fMouseY - (src.height()>>1));
1260        SkRect dest;
1261        dest.set(0, 0, SkIntToScalar(zoomedWidth), SkIntToScalar(zoomedHeight));
1262        dest.offset(SkIntToScalar(width - zoomedWidth), SkIntToScalar(height - zoomedHeight));
1263        SkPaint paint;
1264        // Clear the background behind our zoomed in view
1265        paint.setColor(SK_ColorWHITE);
1266        canvas->drawRect(dest, paint);
1267        canvas->drawBitmapRect(bitmap, &src, dest);
1268        paint.setColor(SK_ColorBLACK);
1269        paint.setStyle(SkPaint::kStroke_Style);
1270        // Draw a border around the pixel in the middle
1271        SkRect originalPixel;
1272        originalPixel.set(SkIntToScalar(fMouseX), SkIntToScalar(fMouseY), SkIntToScalar(fMouseX + 1), SkIntToScalar(fMouseY + 1));
1273        SkMatrix matrix;
1274        SkRect scalarSrc;
1275        scalarSrc.set(src);
1276        SkColor color = bitmap.getColor(fMouseX, fMouseY);
1277        if (matrix.setRectToRect(scalarSrc, dest, SkMatrix::kFill_ScaleToFit)) {
1278            SkRect pixel;
1279            matrix.mapRect(&pixel, originalPixel);
1280            // TODO Perhaps measure the values and make the outline white if it's "dark"
1281            if (color == SK_ColorBLACK) {
1282                paint.setColor(SK_ColorWHITE);
1283            }
1284            canvas->drawRect(pixel, paint);
1285        }
1286        paint.setColor(SK_ColorBLACK);
1287        // Draw a border around the destination rectangle
1288        canvas->drawRect(dest, paint);
1289        paint.setStyle(SkPaint::kStrokeAndFill_Style);
1290        // Identify the pixel and its color on screen
1291        paint.setTypeface(fTypeface);
1292        paint.setAntiAlias(true);
1293        SkScalar lineHeight = paint.getFontMetrics(NULL);
1294        SkString string;
1295        string.appendf("(%i, %i)", fMouseX, fMouseY);
1296        SkScalar left = dest.fLeft + SkIntToScalar(3);
1297        SkScalar i = SK_Scalar1;
1298        drawText(canvas, string, left, SkScalarMulAdd(lineHeight, i, dest.fTop), paint);
1299        // Alpha
1300        i += SK_Scalar1;
1301        string.reset();
1302        string.appendf("A: %X", SkColorGetA(color));
1303        drawText(canvas, string, left, SkScalarMulAdd(lineHeight, i, dest.fTop), paint);
1304        // Red
1305        i += SK_Scalar1;
1306        string.reset();
1307        string.appendf("R: %X", SkColorGetR(color));
1308        paint.setColor(SK_ColorRED);
1309        drawText(canvas, string, left, SkScalarMulAdd(lineHeight, i, dest.fTop), paint);
1310        // Green
1311        i += SK_Scalar1;
1312        string.reset();
1313        string.appendf("G: %X", SkColorGetG(color));
1314        paint.setColor(SK_ColorGREEN);
1315        drawText(canvas, string, left, SkScalarMulAdd(lineHeight, i, dest.fTop), paint);
1316        // Blue
1317        i += SK_Scalar1;
1318        string.reset();
1319        string.appendf("B: %X", SkColorGetB(color));
1320        paint.setColor(SK_ColorBLUE);
1321        drawText(canvas, string, left, SkScalarMulAdd(lineHeight, i, dest.fTop), paint);
1322        canvas->restoreToCount(count);
1323}
1324
1325void SampleWindow::onDraw(SkCanvas* canvas) {
1326}
1327
1328#include "SkColorPriv.h"
1329
1330#if 0 // UNUSED
1331static void reverseRedAndBlue(const SkBitmap& bm) {
1332    SkASSERT(bm.config() == SkBitmap::kARGB_8888_Config);
1333    uint8_t* p = (uint8_t*)bm.getPixels();
1334    uint8_t* stop = p + bm.getSize();
1335    while (p < stop) {
1336        // swap red/blue (to go from ARGB(int) to RGBA(memory) and premultiply
1337        unsigned scale = SkAlpha255To256(p[3]);
1338        unsigned r = p[2];
1339        unsigned b = p[0];
1340        p[0] = SkAlphaMul(r, scale);
1341        p[1] = SkAlphaMul(p[1], scale);
1342        p[2] = SkAlphaMul(b, scale);
1343        p += 4;
1344    }
1345}
1346#endif
1347
1348void SampleWindow::saveToPdf()
1349{
1350    fSaveToPdf = true;
1351    this->inval(NULL);
1352}
1353
1354SkCanvas* SampleWindow::beforeChildren(SkCanvas* canvas) {
1355    if (fSaveToPdf) {
1356        const SkBitmap& bmp = canvas->getDevice()->accessBitmap(false);
1357        SkISize size = SkISize::Make(bmp.width(), bmp.height());
1358        SkPDFDevice* pdfDevice = new SkPDFDevice(size, size,
1359                canvas->getTotalMatrix());
1360        fPdfCanvas = new SkCanvas(pdfDevice);
1361        pdfDevice->unref();
1362        canvas = fPdfCanvas;
1363    } else if (kPicture_DeviceType == fDeviceType) {
1364        fPicture = new SkPicture;
1365        canvas = fPicture->beginRecording(9999, 9999);
1366    } else {
1367#if SK_SUPPORT_GPU
1368        if (kNullGPU_DeviceType != fDeviceType)
1369#endif
1370        {
1371            canvas = this->INHERITED::beforeChildren(canvas);
1372        }
1373    }
1374
1375    if (fUseClip) {
1376        canvas->drawColor(0xFFFF88FF);
1377        canvas->clipPath(fClipPath, SkRegion::kIntersect_Op, true);
1378    }
1379
1380    return canvas;
1381}
1382
1383static void paint_rgn(const SkBitmap& bm, const SkIRect& r,
1384                      const SkRegion& rgn) {
1385    SkCanvas    canvas(bm);
1386    SkRegion    inval(rgn);
1387
1388    inval.translate(r.fLeft, r.fTop);
1389    canvas.clipRegion(inval);
1390    canvas.drawColor(0xFFFF8080);
1391}
1392#include "SkData.h"
1393void SampleWindow::afterChildren(SkCanvas* orig) {
1394    if (fSaveToPdf) {
1395        fSaveToPdf = false;
1396        if (fShowZoomer) {
1397            showZoomer(fPdfCanvas);
1398        }
1399        SkString name;
1400        name.printf("%s.pdf", this->getTitle());
1401        SkPDFDocument doc;
1402        SkPDFDevice* device = static_cast<SkPDFDevice*>(fPdfCanvas->getDevice());
1403        doc.appendPage(device);
1404#ifdef SK_BUILD_FOR_ANDROID
1405        name.prepend("/sdcard/");
1406#endif
1407
1408#ifdef SK_BUILD_FOR_IOS
1409        SkDynamicMemoryWStream mstream;
1410        doc.emitPDF(&mstream);
1411        fPDFData = mstream.copyToData();
1412#endif
1413        SkFILEWStream stream(name.c_str());
1414        if (stream.isValid()) {
1415            doc.emitPDF(&stream);
1416            const char* desc = "File saved from Skia SampleApp";
1417            this->onPDFSaved(this->getTitle(), desc, name.c_str());
1418        }
1419
1420        delete fPdfCanvas;
1421        fPdfCanvas = NULL;
1422
1423        // We took over the draw calls in order to create the PDF, so we need
1424        // to redraw.
1425        this->inval(NULL);
1426        return;
1427    }
1428
1429    if (fRequestGrabImage) {
1430        fRequestGrabImage = false;
1431
1432        SkBaseDevice* device = orig->getDevice();
1433        SkBitmap bmp;
1434        if (device->accessBitmap(false).copyTo(&bmp, SkBitmap::kARGB_8888_Config)) {
1435            static int gSampleGrabCounter;
1436            SkString name;
1437            name.printf("sample_grab_%d.png", gSampleGrabCounter++);
1438            SkImageEncoder::EncodeFile(name.c_str(), bmp,
1439                                       SkImageEncoder::kPNG_Type, 100);
1440        }
1441    }
1442
1443    if (kPicture_DeviceType == fDeviceType) {
1444        if (true) {
1445            SkPicture* pict = new SkPicture(*fPicture);
1446            fPicture->unref();
1447            this->installDrawFilter(orig);
1448            orig->drawPicture(*pict);
1449            pict->unref();
1450        } else if (true) {
1451            SkDynamicMemoryWStream ostream;
1452            fPicture->serialize(&ostream);
1453            fPicture->unref();
1454
1455            SkAutoDataUnref data(ostream.copyToData());
1456            SkMemoryStream istream(data->data(), data->size());
1457            SkAutoTUnref<SkPicture> pict(SkPicture::CreateFromStream(&istream));
1458            if (pict.get() != NULL) {
1459                orig->drawPicture(*pict.get());
1460            }
1461        } else {
1462            fPicture->draw(orig);
1463            fPicture->unref();
1464        }
1465        fPicture = NULL;
1466    }
1467
1468    // Do this after presentGL and other finishing, rather than in afterChild
1469    if (fMeasureFPS && fMeasureFPS_StartTime) {
1470        fMeasureFPS_Time += SkTime::GetMSecs() - fMeasureFPS_StartTime;
1471    }
1472
1473    //    if ((fScrollTestX | fScrollTestY) != 0)
1474    if (false) {
1475        const SkBitmap& bm = orig->getDevice()->accessBitmap(true);
1476        int dx = fScrollTestX * 7;
1477        int dy = fScrollTestY * 7;
1478        SkIRect r;
1479        SkRegion inval;
1480
1481        r.set(50, 50, 50+100, 50+100);
1482        bm.scrollRect(&r, dx, dy, &inval);
1483        paint_rgn(bm, r, inval);
1484    }
1485}
1486
1487void SampleWindow::beforeChild(SkView* child, SkCanvas* canvas) {
1488    if (fRotate) {
1489        fRotateAnimTime += SampleCode::GetAnimSecondsDelta();
1490
1491        SkScalar cx = this->width() / 2;
1492        SkScalar cy = this->height() / 2;
1493        canvas->translate(cx, cy);
1494        canvas->rotate(fRotateAnimTime * 10);
1495        canvas->translate(-cx, -cy);
1496    }
1497
1498    if (fPerspAnim) {
1499        fPerspAnimTime += SampleCode::GetAnimSecondsDelta();
1500
1501        static const SkScalar gAnimPeriod = 10 * SK_Scalar1;
1502        static const SkScalar gAnimMag = SK_Scalar1 / 1000;
1503        SkScalar t = SkScalarMod(fPerspAnimTime, gAnimPeriod);
1504        if (SkScalarFloorToInt(SkScalarDiv(fPerspAnimTime, gAnimPeriod)) & 0x1) {
1505            t = gAnimPeriod - t;
1506        }
1507        t = 2 * t - gAnimPeriod;
1508        t = SkScalarMul(SkScalarDiv(t, gAnimPeriod), gAnimMag);
1509        SkMatrix m;
1510        m.reset();
1511        m.setPerspY(t);
1512        canvas->concat(m);
1513    }
1514
1515    this->installDrawFilter(canvas);
1516
1517    if (fMeasureFPS) {
1518        if (SampleView::SetRepeatDraw(child, FPS_REPEAT_COUNT)) {
1519            fMeasureFPS_StartTime = SkTime::GetMSecs();
1520        }
1521    } else {
1522        (void)SampleView::SetRepeatDraw(child, 1);
1523    }
1524    if (fPerspAnim || fRotate) {
1525        this->inval(NULL);
1526    }
1527}
1528
1529void SampleWindow::afterChild(SkView* child, SkCanvas* canvas) {
1530    canvas->setDrawFilter(NULL);
1531}
1532
1533static SkBitmap::Config gConfigCycle[] = {
1534    SkBitmap::kNo_Config,           // none -> none
1535    SkBitmap::kNo_Config,           // a1 -> none
1536    SkBitmap::kNo_Config,           // a8 -> none
1537    SkBitmap::kNo_Config,           // index8 -> none
1538    SkBitmap::kARGB_4444_Config,    // 565 -> 4444
1539    SkBitmap::kARGB_8888_Config,    // 4444 -> 8888
1540    SkBitmap::kRGB_565_Config       // 8888 -> 565
1541};
1542
1543static SkBitmap::Config cycle_configs(SkBitmap::Config c) {
1544    return gConfigCycle[c];
1545}
1546
1547void SampleWindow::changeZoomLevel(float delta) {
1548    fZoomLevel += SkFloatToScalar(delta);
1549    if (fZoomLevel > 0) {
1550        fZoomLevel = SkMinScalar(fZoomLevel, MAX_ZOOM_LEVEL);
1551        fZoomScale = fZoomLevel + SK_Scalar1;
1552    } else if (fZoomLevel < 0) {
1553        fZoomLevel = SkMaxScalar(fZoomLevel, MIN_ZOOM_LEVEL);
1554        fZoomScale = SK_Scalar1 / (SK_Scalar1 - fZoomLevel);
1555    } else {
1556        fZoomScale = SK_Scalar1;
1557    }
1558    this->updateMatrix();
1559}
1560
1561void SampleWindow::updateMatrix(){
1562    SkMatrix m;
1563    m.reset();
1564    if (fZoomLevel) {
1565        SkPoint center;
1566        //m = this->getLocalMatrix();//.invert(&m);
1567        m.mapXY(fZoomCenterX, fZoomCenterY, &center);
1568        SkScalar cx = center.fX;
1569        SkScalar cy = center.fY;
1570
1571        m.setTranslate(-cx, -cy);
1572        m.postScale(fZoomScale, fZoomScale);
1573        m.postTranslate(cx, cy);
1574    }
1575
1576    if (fFlipAxis) {
1577        m.preTranslate(fZoomCenterX, fZoomCenterY);
1578        if (fFlipAxis & kFlipAxis_X) {
1579            m.preScale(-SK_Scalar1, SK_Scalar1);
1580        }
1581        if (fFlipAxis & kFlipAxis_Y) {
1582            m.preScale(SK_Scalar1, -SK_Scalar1);
1583        }
1584        m.preTranslate(-fZoomCenterX, -fZoomCenterY);
1585        //canvas->concat(m);
1586    }
1587    // Apply any gesture matrix
1588    m.preConcat(fGesture.localM());
1589    m.preConcat(fGesture.globalM());
1590
1591    this->setLocalMatrix(m);
1592
1593    this->updateTitle();
1594    this->inval(NULL);
1595}
1596bool SampleWindow::previousSample() {
1597    fCurrIndex = (fCurrIndex - 1 + fSamples.count()) % fSamples.count();
1598    this->loadView(create_transition(curr_view(this), (*fSamples[fCurrIndex])(),
1599                                     fTransitionPrev));
1600    return true;
1601}
1602
1603bool SampleWindow::nextSample() {
1604    fCurrIndex = (fCurrIndex + 1) % fSamples.count();
1605    this->loadView(create_transition(curr_view(this), (*fSamples[fCurrIndex])(),
1606                                     fTransitionNext));
1607    return true;
1608}
1609
1610bool SampleWindow::goToSample(int i) {
1611    fCurrIndex = (i) % fSamples.count();
1612    this->loadView(create_transition(curr_view(this),(*fSamples[fCurrIndex])(), 6));
1613    return true;
1614}
1615
1616SkString SampleWindow::getSampleTitle(int i) {
1617    return ::getSampleTitle(fSamples[i]);
1618}
1619
1620int SampleWindow::sampleCount() {
1621    return fSamples.count();
1622}
1623
1624void SampleWindow::showOverview() {
1625    this->loadView(create_transition(curr_view(this),
1626                                     create_overview(fSamples.count(), fSamples.begin()),
1627                                     4));
1628}
1629
1630void SampleWindow::installDrawFilter(SkCanvas* canvas) {
1631    canvas->setDrawFilter(new FlagsDrawFilter(fLCDState, fAAState, fFilterState, fSubpixelState,
1632                                              fHintingState))->unref();
1633}
1634
1635void SampleWindow::postAnimatingEvent() {
1636    if (fAnimating) {
1637        (new SkEvent(ANIMATING_EVENTTYPE, this->getSinkID()))->postDelay(ANIMATING_DELAY);
1638    }
1639}
1640
1641bool SampleWindow::onEvent(const SkEvent& evt) {
1642    if (evt.isType(gUpdateWindowTitleEvtName)) {
1643        this->updateTitle();
1644        return true;
1645    }
1646    if (evt.isType(ANIMATING_EVENTTYPE)) {
1647        if (fAnimating) {
1648            this->nextSample();
1649            this->postAnimatingEvent();
1650        }
1651        return true;
1652    }
1653    if (evt.isType("replace-transition-view")) {
1654        this->loadView((SkView*)SkEventSink::FindSink(evt.getFast32()));
1655        return true;
1656    }
1657    if (evt.isType("set-curr-index")) {
1658        this->goToSample(evt.getFast32());
1659        return true;
1660    }
1661    if (isInvalEvent(evt)) {
1662        this->inval(NULL);
1663        return true;
1664    }
1665    int selected = -1;
1666    if (SkOSMenu::FindListIndex(evt, "Device Type", &selected)) {
1667        this->setDeviceType((DeviceType)selected);
1668        return true;
1669    }
1670    if (SkOSMenu::FindTriState(evt, "Pipe", &fPipeState)) {
1671#ifdef PIPE_NET
1672        if (!fPipeState != SkOSMenu::kOnState)
1673            gServer.disconnectAll();
1674#endif
1675        (void)SampleView::SetUsePipe(curr_view(this), fPipeState);
1676        this->updateTitle();
1677        this->inval(NULL);
1678        return true;
1679    }
1680    if (SkOSMenu::FindTriState(evt, "Tiling", &fTilingState)) {
1681        int nx = 1, ny = 1;
1682        switch (fTilingState) {
1683            case SkOSMenu::kOffState:   nx = 1; ny = 1; break;
1684            case SkOSMenu::kMixedState: nx = 1; ny = 16; break;
1685            case SkOSMenu::kOnState:    nx = 4; ny = 4; break;
1686        }
1687        fTileCount.set(nx, ny);
1688        this->inval(NULL);
1689        return true;
1690    }
1691    if (SkOSMenu::FindSwitchState(evt, "Slide Show", NULL)) {
1692        this->toggleSlideshow();
1693        return true;
1694    }
1695    if (SkOSMenu::FindTriState(evt, "AA", &fAAState) ||
1696        SkOSMenu::FindTriState(evt, "LCD", &fLCDState) ||
1697        SkOSMenu::FindTriState(evt, "Filter", &fFilterState) ||
1698        SkOSMenu::FindTriState(evt, "Subpixel", &fSubpixelState) ||
1699        SkOSMenu::FindListIndex(evt, "Hinting", &fHintingState) ||
1700        SkOSMenu::FindSwitchState(evt, "Clip", &fUseClip) ||
1701        SkOSMenu::FindSwitchState(evt, "Zoomer", &fShowZoomer) ||
1702        SkOSMenu::FindSwitchState(evt, "Magnify", &fMagnify) ||
1703        SkOSMenu::FindListIndex(evt, "Transition-Next", &fTransitionNext) ||
1704        SkOSMenu::FindListIndex(evt, "Transition-Prev", &fTransitionPrev)) {
1705        this->inval(NULL);
1706        this->updateTitle();
1707        return true;
1708    }
1709    if (SkOSMenu::FindSwitchState(evt, "Flip X", NULL)) {
1710        fFlipAxis ^= kFlipAxis_X;
1711        this->updateMatrix();
1712        return true;
1713    }
1714    if (SkOSMenu::FindSwitchState(evt, "Flip Y", NULL)) {
1715        fFlipAxis ^= kFlipAxis_Y;
1716        this->updateMatrix();
1717        return true;
1718    }
1719    if (SkOSMenu::FindAction(evt,"Save to PDF")) {
1720        this->saveToPdf();
1721        return true;
1722    }
1723    return this->INHERITED::onEvent(evt);
1724}
1725
1726bool SampleWindow::onQuery(SkEvent* query) {
1727    if (query->isType("get-slide-count")) {
1728        query->setFast32(fSamples.count());
1729        return true;
1730    }
1731    if (query->isType("get-slide-title")) {
1732        SkView* view = (*fSamples[query->getFast32()])();
1733        SkEvent evt(gTitleEvtName);
1734        if (view->doQuery(&evt)) {
1735            query->setString("title", evt.findString(gTitleEvtName));
1736        }
1737        SkSafeUnref(view);
1738        return true;
1739    }
1740    if (query->isType("use-fast-text")) {
1741        SkEvent evt(gFastTextEvtName);
1742        return curr_view(this)->doQuery(&evt);
1743    }
1744    if (query->isType("ignore-window-bitmap")) {
1745        query->setFast32(this->getGrContext() != NULL);
1746        return true;
1747    }
1748    return this->INHERITED::onQuery(query);
1749}
1750
1751#if 0 // UNUSED
1752static void cleanup_for_filename(SkString* name) {
1753    char* str = name->writable_str();
1754    for (size_t i = 0; i < name->size(); i++) {
1755        switch (str[i]) {
1756            case ':': str[i] = '-'; break;
1757            case '/': str[i] = '-'; break;
1758            case ' ': str[i] = '_'; break;
1759            default: break;
1760        }
1761    }
1762}
1763#endif
1764
1765//extern bool gIgnoreFastBlurRect;
1766
1767bool SampleWindow::onHandleChar(SkUnichar uni) {
1768    {
1769        SkView* view = curr_view(this);
1770        if (view) {
1771            SkEvent evt(gCharEvtName);
1772            evt.setFast32(uni);
1773            if (view->doQuery(&evt)) {
1774                return true;
1775            }
1776        }
1777    }
1778
1779    int dx = 0xFF;
1780    int dy = 0xFF;
1781
1782    switch (uni) {
1783        case '5': dx =  0; dy =  0; break;
1784        case '8': dx =  0; dy = -1; break;
1785        case '6': dx =  1; dy =  0; break;
1786        case '2': dx =  0; dy =  1; break;
1787        case '4': dx = -1; dy =  0; break;
1788        case '7': dx = -1; dy = -1; break;
1789        case '9': dx =  1; dy = -1; break;
1790        case '3': dx =  1; dy =  1; break;
1791        case '1': dx = -1; dy =  1; break;
1792
1793        default:
1794            break;
1795    }
1796
1797    if (0xFF != dx && 0xFF != dy) {
1798        if ((dx | dy) == 0) {
1799            fScrollTestX = fScrollTestY = 0;
1800        } else {
1801            fScrollTestX += dx;
1802            fScrollTestY += dy;
1803        }
1804        this->inval(NULL);
1805        return true;
1806    }
1807
1808    switch (uni) {
1809        case 'b':
1810            {
1811            postEventToSink(SkNEW_ARGS(SkEvent, ("PictFileView::toggleBBox")), curr_view(this));
1812            this->updateTitle();
1813            this->inval(NULL);
1814            break;
1815            }
1816        case 'B':
1817//            gIgnoreFastBlurRect = !gIgnoreFastBlurRect;
1818            this->inval(NULL);
1819            break;
1820
1821        case 'f':
1822            // only
1823            toggleFPS();
1824            break;
1825        case 'g':
1826            fRequestGrabImage = true;
1827            this->inval(NULL);
1828            break;
1829        case 'G':
1830            gShowGMBounds = !gShowGMBounds;
1831            postEventToSink(GMSampleView::NewShowSizeEvt(gShowGMBounds),
1832                            curr_view(this));
1833            this->inval(NULL);
1834            break;
1835        case 'i':
1836            this->zoomIn();
1837            break;
1838        case 'o':
1839            this->zoomOut();
1840            break;
1841        case 'r':
1842            fRotate = !fRotate;
1843            fRotateAnimTime = 0;
1844            this->inval(NULL);
1845            this->updateTitle();
1846            return true;
1847        case 'k':
1848            fPerspAnim = !fPerspAnim;
1849            this->inval(NULL);
1850            this->updateTitle();
1851            return true;
1852#if SK_SUPPORT_GPU
1853        case '\\':
1854            this->setDeviceType(kNullGPU_DeviceType);
1855            this->inval(NULL);
1856            this->updateTitle();
1857            return true;
1858        case 'p':
1859            {
1860                GrContext* grContext = this->getGrContext();
1861                if (grContext) {
1862                    size_t cacheBytes = grContext->getGpuTextureCacheBytes();
1863                    grContext->freeGpuResources();
1864                    SkDebugf("Purged %d bytes from the GPU resource cache.\n",
1865                             cacheBytes);
1866                }
1867            }
1868            return true;
1869#endif
1870        default:
1871            break;
1872    }
1873
1874    if (fAppMenu->handleKeyEquivalent(uni)|| fSlideMenu->handleKeyEquivalent(uni)) {
1875        this->onUpdateMenu(fAppMenu);
1876        this->onUpdateMenu(fSlideMenu);
1877        return true;
1878    }
1879    return this->INHERITED::onHandleChar(uni);
1880}
1881
1882void SampleWindow::setDeviceType(DeviceType type) {
1883    if (type == fDeviceType)
1884        return;
1885
1886    fDevManager->tearDownBackend(this);
1887
1888    fDeviceType = type;
1889
1890    fDevManager->setUpBackend(this, fMSAASampleCount);
1891
1892    this->updateTitle();
1893    this->inval(NULL);
1894}
1895
1896void SampleWindow::toggleSlideshow() {
1897    fAnimating = !fAnimating;
1898    this->postAnimatingEvent();
1899    this->updateTitle();
1900}
1901
1902void SampleWindow::toggleRendering() {
1903    this->setDeviceType(cycle_devicetype(fDeviceType));
1904    this->updateTitle();
1905    this->inval(NULL);
1906}
1907
1908void SampleWindow::toggleFPS() {
1909    fMeasureFPS = !fMeasureFPS;
1910    this->updateTitle();
1911    this->inval(NULL);
1912}
1913
1914#include "SkDumpCanvas.h"
1915
1916bool SampleWindow::onHandleKey(SkKey key) {
1917    {
1918        SkView* view = curr_view(this);
1919        if (view) {
1920            SkEvent evt(gKeyEvtName);
1921            evt.setFast32(key);
1922            if (view->doQuery(&evt)) {
1923                return true;
1924            }
1925        }
1926    }
1927    switch (key) {
1928        case kRight_SkKey:
1929            if (this->nextSample()) {
1930                return true;
1931            }
1932            break;
1933        case kLeft_SkKey:
1934            if (this->previousSample()) {
1935                return true;
1936            }
1937            return true;
1938        case kUp_SkKey:
1939            if (USE_ARROWS_FOR_ZOOM) {
1940                this->changeZoomLevel(1.f / 32.f);
1941            } else {
1942                fNClip = !fNClip;
1943                this->inval(NULL);
1944                this->updateTitle();
1945            }
1946            return true;
1947        case kDown_SkKey:
1948            if (USE_ARROWS_FOR_ZOOM) {
1949                this->changeZoomLevel(-1.f / 32.f);
1950            } else {
1951                this->setConfig(cycle_configs(this->getBitmap().config()));
1952                this->updateTitle();
1953            }
1954            return true;
1955        case kOK_SkKey: {
1956            SkString title;
1957            if (curr_title(this, &title)) {
1958                writeTitleToPrefs(title.c_str());
1959            }
1960            return true;
1961        }
1962        case kBack_SkKey:
1963            this->showOverview();
1964            return true;
1965        default:
1966            break;
1967    }
1968    return this->INHERITED::onHandleKey(key);
1969}
1970
1971///////////////////////////////////////////////////////////////////////////////
1972
1973static const char gGestureClickType[] = "GestureClickType";
1974
1975bool SampleWindow::onDispatchClick(int x, int y, Click::State state,
1976        void* owner, unsigned modi) {
1977    if (Click::kMoved_State == state) {
1978        updatePointer(x, y);
1979    }
1980    int w = SkScalarRound(this->width());
1981    int h = SkScalarRound(this->height());
1982
1983    // check for the resize-box
1984    if (w - x < 16 && h - y < 16) {
1985        return false;   // let the OS handle the click
1986    }
1987    else if (fMagnify) {
1988        //it's only necessary to update the drawing if there's a click
1989        this->inval(NULL);
1990        return false; //prevent dragging while magnify is enabled
1991    } else {
1992        // capture control+option, and trigger debugger
1993        if ((modi & kControl_SkModifierKey) && (modi & kOption_SkModifierKey)) {
1994            if (Click::kDown_State == state) {
1995                SkEvent evt("debug-hit-test");
1996                evt.setS32("debug-hit-test-x", x);
1997                evt.setS32("debug-hit-test-y", y);
1998                curr_view(this)->doEvent(evt);
1999            }
2000            return true;
2001        } else {
2002            return this->INHERITED::onDispatchClick(x, y, state, owner, modi);
2003        }
2004    }
2005}
2006
2007class GestureClick : public SkView::Click {
2008public:
2009    GestureClick(SkView* target) : SkView::Click(target) {
2010        this->setType(gGestureClickType);
2011    }
2012
2013    static bool IsGesture(Click* click) {
2014        return click->isType(gGestureClickType);
2015    }
2016};
2017
2018SkView::Click* SampleWindow::onFindClickHandler(SkScalar x, SkScalar y,
2019                                                unsigned modi) {
2020    return new GestureClick(this);
2021}
2022
2023bool SampleWindow::onClick(Click* click) {
2024    if (GestureClick::IsGesture(click)) {
2025        float x = static_cast<float>(click->fICurr.fX);
2026        float y = static_cast<float>(click->fICurr.fY);
2027
2028        switch (click->fState) {
2029            case SkView::Click::kDown_State:
2030                fGesture.touchBegin(click->fOwner, x, y);
2031                break;
2032            case SkView::Click::kMoved_State:
2033                fGesture.touchMoved(click->fOwner, x, y);
2034                this->updateMatrix();
2035                break;
2036            case SkView::Click::kUp_State:
2037                fGesture.touchEnd(click->fOwner);
2038                this->updateMatrix();
2039                break;
2040        }
2041        return true;
2042    }
2043    return false;
2044}
2045
2046///////////////////////////////////////////////////////////////////////////////
2047
2048void SampleWindow::loadView(SkView* view) {
2049    SkView::F2BIter iter(this);
2050    SkView* prev = iter.next();
2051    if (prev) {
2052        prev->detachFromParent();
2053    }
2054
2055    view->setVisibleP(true);
2056    view->setClipToBounds(false);
2057    this->attachChildToFront(view)->unref();
2058    view->setSize(this->width(), this->height());
2059
2060    //repopulate the slide menu when a view is loaded
2061    fSlideMenu->reset();
2062
2063    (void)SampleView::SetUsePipe(view, fPipeState);
2064    if (SampleView::IsSampleView(view))
2065        ((SampleView*)view)->requestMenu(fSlideMenu);
2066    this->onUpdateMenu(fSlideMenu);
2067    this->updateTitle();
2068}
2069
2070static const char* gConfigNames[] = {
2071    "unknown config",
2072    "A1",
2073    "A8",
2074    "Index8",
2075    "565",
2076    "4444",
2077    "8888"
2078};
2079
2080static const char* configToString(SkBitmap::Config c) {
2081    return gConfigNames[c];
2082}
2083
2084static const char* gDeviceTypePrefix[] = {
2085    "raster: ",
2086    "picture: ",
2087#if SK_SUPPORT_GPU
2088    "opengl: ",
2089#if SK_ANGLE
2090    "angle: ",
2091#endif // SK_ANGLE
2092    "null-gl: "
2093#endif // SK_SUPPORT_GPU
2094};
2095SK_COMPILE_ASSERT(SK_ARRAY_COUNT(gDeviceTypePrefix) == SampleWindow::kDeviceTypeCnt,
2096                  array_size_mismatch);
2097
2098static const char* trystate_str(SkOSMenu::TriState state,
2099                                const char trueStr[], const char falseStr[]) {
2100    if (SkOSMenu::kOnState == state) {
2101        return trueStr;
2102    } else if (SkOSMenu::kOffState == state) {
2103        return falseStr;
2104    }
2105    return NULL;
2106}
2107
2108void SampleWindow::updateTitle() {
2109    SkView* view = curr_view(this);
2110
2111    SkString title;
2112    if (!curr_title(this, &title)) {
2113        title.set("<unknown>");
2114    }
2115
2116    title.prepend(gDeviceTypePrefix[fDeviceType]);
2117
2118    title.prepend(" ");
2119    title.prepend(configToString(this->getBitmap().config()));
2120
2121    if (fAnimating) {
2122        title.prepend("<A> ");
2123    }
2124    if (fRotate) {
2125        title.prepend("<R> ");
2126    }
2127    if (fNClip) {
2128        title.prepend("<C> ");
2129    }
2130    if (fPerspAnim) {
2131        title.prepend("<K> ");
2132    }
2133
2134    title.prepend(trystate_str(fLCDState, "LCD ", "lcd "));
2135    title.prepend(trystate_str(fAAState, "AA ", "aa "));
2136    title.prepend(trystate_str(fFilterState, "N ", "n "));
2137    title.prepend(trystate_str(fSubpixelState, "S ", "s "));
2138    title.prepend(fFlipAxis & kFlipAxis_X ? "X " : NULL);
2139    title.prepend(fFlipAxis & kFlipAxis_Y ? "Y " : NULL);
2140    title.prepend(gHintingStates[fHintingState].label);
2141
2142    if (fZoomLevel) {
2143        title.prependf("{%.2f} ", SkScalarToFloat(fZoomLevel));
2144    }
2145
2146    if (fMeasureFPS) {
2147        title.appendf(" %8.3f ms", fMeasureFPS_Time / (float)FPS_REPEAT_COUNT);
2148    }
2149    if (SampleView::IsSampleView(view)) {
2150        switch (fPipeState) {
2151            case SkOSMenu::kOnState:
2152                title.prepend("<Pipe> ");
2153                break;
2154            case SkOSMenu::kMixedState:
2155                title.prepend("<Tiled Pipe> ");
2156                break;
2157
2158            default:
2159                break;
2160        }
2161        title.prepend("! ");
2162    }
2163
2164#if SK_SUPPORT_GPU
2165    if (IsGpuDeviceType(fDeviceType) &&
2166        NULL != fDevManager &&
2167        fDevManager->getGrRenderTarget() &&
2168        fDevManager->getGrRenderTarget()->numSamples() > 0) {
2169        title.appendf(" [MSAA: %d]",
2170                       fDevManager->getGrRenderTarget()->numSamples());
2171    }
2172#endif
2173
2174    this->setTitle(title.c_str());
2175}
2176
2177void SampleWindow::onSizeChange() {
2178    this->INHERITED::onSizeChange();
2179
2180    SkView::F2BIter iter(this);
2181    SkView* view = iter.next();
2182    view->setSize(this->width(), this->height());
2183
2184    // rebuild our clippath
2185    {
2186        const SkScalar W = this->width();
2187        const SkScalar H = this->height();
2188
2189        fClipPath.reset();
2190#if 0
2191        for (SkScalar y = SK_Scalar1; y < H; y += SkIntToScalar(32)) {
2192            SkRect r;
2193            r.set(SK_Scalar1, y, SkIntToScalar(30), y + SkIntToScalar(30));
2194            for (; r.fLeft < W; r.offset(SkIntToScalar(32), 0))
2195                fClipPath.addRect(r);
2196        }
2197#else
2198        SkRect r;
2199        r.set(0, 0, W, H);
2200        fClipPath.addRect(r, SkPath::kCCW_Direction);
2201        r.set(W/4, H/4, W*3/4, H*3/4);
2202        fClipPath.addRect(r, SkPath::kCW_Direction);
2203#endif
2204    }
2205
2206    fZoomCenterX = SkScalarHalf(this->width());
2207    fZoomCenterY = SkScalarHalf(this->height());
2208
2209#ifdef SK_BUILD_FOR_ANDROID
2210    // FIXME: The first draw after a size change does not work on Android, so
2211    // we post an invalidate.
2212    this->postInvalDelay();
2213#endif
2214    this->updateTitle();    // to refresh our config
2215    fDevManager->windowSizeChanged(this);
2216}
2217
2218///////////////////////////////////////////////////////////////////////////////
2219
2220static const char is_sample_view_tag[] = "sample-is-sample-view";
2221static const char repeat_count_tag[] = "sample-set-repeat-count";
2222static const char set_use_pipe_tag[] = "sample-set-use-pipe";
2223
2224bool SampleView::IsSampleView(SkView* view) {
2225    SkEvent evt(is_sample_view_tag);
2226    return view->doQuery(&evt);
2227}
2228
2229bool SampleView::SetRepeatDraw(SkView* view, int count) {
2230    SkEvent evt(repeat_count_tag);
2231    evt.setFast32(count);
2232    return view->doEvent(evt);
2233}
2234
2235bool SampleView::SetUsePipe(SkView* view, SkOSMenu::TriState state) {
2236    SkEvent evt;
2237    evt.setS32(set_use_pipe_tag, state);
2238    return view->doEvent(evt);
2239}
2240
2241bool SampleView::onEvent(const SkEvent& evt) {
2242    if (evt.isType(repeat_count_tag)) {
2243        fRepeatCount = evt.getFast32();
2244        return true;
2245    }
2246
2247    int32_t pipeHolder;
2248    if (evt.findS32(set_use_pipe_tag, &pipeHolder)) {
2249        fPipeState = static_cast<SkOSMenu::TriState>(pipeHolder);
2250        return true;
2251    }
2252
2253    if (evt.isType("debug-hit-test")) {
2254        fDebugHitTest = true;
2255        evt.findS32("debug-hit-test-x", &fDebugHitTestLoc.fX);
2256        evt.findS32("debug-hit-test-y", &fDebugHitTestLoc.fY);
2257        this->inval(NULL);
2258        return true;
2259    }
2260
2261    return this->INHERITED::onEvent(evt);
2262}
2263
2264bool SampleView::onQuery(SkEvent* evt) {
2265    if (evt->isType(is_sample_view_tag)) {
2266        return true;
2267    }
2268    return this->INHERITED::onQuery(evt);
2269}
2270
2271
2272class SimplePC : public SkGPipeController {
2273public:
2274    SimplePC(SkCanvas* target);
2275    ~SimplePC();
2276
2277    virtual void* requestBlock(size_t minRequest, size_t* actual);
2278    virtual void notifyWritten(size_t bytes);
2279
2280private:
2281    SkGPipeReader   fReader;
2282    void*           fBlock;
2283    size_t          fBlockSize;
2284    size_t          fBytesWritten;
2285    int             fAtomsWritten;
2286    SkGPipeReader::Status   fStatus;
2287
2288    size_t        fTotalWritten;
2289};
2290
2291SimplePC::SimplePC(SkCanvas* target) : fReader(target) {
2292    fBlock = NULL;
2293    fBlockSize = fBytesWritten = 0;
2294    fStatus = SkGPipeReader::kDone_Status;
2295    fTotalWritten = 0;
2296    fAtomsWritten = 0;
2297    fReader.setBitmapDecoder(&SkImageDecoder::DecodeMemory);
2298}
2299
2300SimplePC::~SimplePC() {
2301//    SkASSERT(SkGPipeReader::kDone_Status == fStatus);
2302    if (fTotalWritten) {
2303        SkDebugf("--- %d bytes %d atoms, status %d\n", fTotalWritten,
2304                 fAtomsWritten, fStatus);
2305#ifdef  PIPE_FILE
2306        //File is open in append mode
2307        FILE* f = fopen(FILE_PATH, "ab");
2308        SkASSERT(f != NULL);
2309        fwrite((const char*)fBlock + fBytesWritten, 1, bytes, f);
2310        fclose(f);
2311#endif
2312#ifdef PIPE_NET
2313        if (fAtomsWritten > 1 && fTotalWritten > 4) { //ignore done
2314            gServer.acceptConnections();
2315            gServer.writePacket(fBlock, fTotalWritten);
2316        }
2317#endif
2318    }
2319    sk_free(fBlock);
2320}
2321
2322void* SimplePC::requestBlock(size_t minRequest, size_t* actual) {
2323    sk_free(fBlock);
2324
2325    fBlockSize = minRequest * 4;
2326    fBlock = sk_malloc_throw(fBlockSize);
2327    fBytesWritten = 0;
2328    *actual = fBlockSize;
2329    return fBlock;
2330}
2331
2332void SimplePC::notifyWritten(size_t bytes) {
2333    SkASSERT(fBytesWritten + bytes <= fBlockSize);
2334    fStatus = fReader.playback((const char*)fBlock + fBytesWritten, bytes);
2335    SkASSERT(SkGPipeReader::kError_Status != fStatus);
2336    fBytesWritten += bytes;
2337    fTotalWritten += bytes;
2338
2339    fAtomsWritten += 1;
2340}
2341
2342void SampleView::draw(SkCanvas* canvas) {
2343    if (SkOSMenu::kOffState == fPipeState) {
2344        this->INHERITED::draw(canvas);
2345    } else {
2346        SkGPipeWriter writer;
2347        SimplePC controller(canvas);
2348        TiledPipeController tc(canvas->getDevice()->accessBitmap(false),
2349                               &SkImageDecoder::DecodeMemory,
2350                               &canvas->getTotalMatrix());
2351        SkGPipeController* pc;
2352        if (SkOSMenu::kMixedState == fPipeState) {
2353            pc = &tc;
2354        } else {
2355            pc = &controller;
2356        }
2357        uint32_t flags = SkGPipeWriter::kCrossProcess_Flag;
2358
2359        canvas = writer.startRecording(pc, flags);
2360        //Must draw before controller goes out of scope and sends data
2361        this->INHERITED::draw(canvas);
2362        //explicitly end recording to ensure writer is flushed before the memory
2363        //is freed in the deconstructor of the controller
2364        writer.endRecording();
2365    }
2366}
2367
2368#include "SkBounder.h"
2369
2370class DebugHitTestBounder : public SkBounder {
2371public:
2372    DebugHitTestBounder(int x, int y) {
2373        fLoc.set(x, y);
2374    }
2375
2376    virtual bool onIRect(const SkIRect& bounds) SK_OVERRIDE {
2377        if (bounds.contains(fLoc.x(), fLoc.y())) {
2378            //
2379            // Set a break-point here to see what was being drawn under
2380            // the click point (just needed a line of code to stop the debugger)
2381            //
2382            bounds.centerX();
2383        }
2384        return true;
2385    }
2386
2387private:
2388    SkIPoint fLoc;
2389    typedef SkBounder INHERITED;
2390};
2391
2392void SampleView::onDraw(SkCanvas* canvas) {
2393    this->onDrawBackground(canvas);
2394
2395    DebugHitTestBounder bounder(fDebugHitTestLoc.x(), fDebugHitTestLoc.y());
2396    if (fDebugHitTest) {
2397        canvas->setBounder(&bounder);
2398    }
2399
2400    for (int i = 0; i < fRepeatCount; i++) {
2401        SkAutoCanvasRestore acr(canvas, true);
2402        this->onDrawContent(canvas);
2403    }
2404
2405    fDebugHitTest = false;
2406    canvas->setBounder(NULL);
2407}
2408
2409void SampleView::onDrawBackground(SkCanvas* canvas) {
2410    canvas->drawColor(fBGColor);
2411}
2412
2413///////////////////////////////////////////////////////////////////////////////
2414
2415template <typename T> void SkTBSort(T array[], int count) {
2416    for (int i = 1; i < count - 1; i++) {
2417        bool didSwap = false;
2418        for (int j = count - 1; j > i; --j) {
2419            if (array[j] < array[j-1]) {
2420                T tmp(array[j-1]);
2421                array[j-1] = array[j];
2422                array[j] = tmp;
2423                didSwap = true;
2424            }
2425        }
2426        if (!didSwap) {
2427            break;
2428        }
2429    }
2430
2431    for (int k = 0; k < count - 1; k++) {
2432        SkASSERT(!(array[k+1] < array[k]));
2433    }
2434}
2435
2436#include "SkRandom.h"
2437
2438static void rand_rect(SkIRect* rect, SkRandom& rand) {
2439    int bits = 8;
2440    int shift = 32 - bits;
2441    rect->set(rand.nextU() >> shift, rand.nextU() >> shift,
2442              rand.nextU() >> shift, rand.nextU() >> shift);
2443    rect->sort();
2444}
2445
2446static void dumpRect(const SkIRect& r) {
2447    SkDebugf(" { %d, %d, %d, %d },\n",
2448             r.fLeft, r.fTop,
2449             r.fRight, r.fBottom);
2450}
2451
2452static void test_rects(const SkIRect rect[], int count) {
2453    SkRegion rgn0, rgn1;
2454
2455    for (int i = 0; i < count; i++) {
2456        rgn0.op(rect[i], SkRegion::kUnion_Op);
2457     //   dumpRect(rect[i]);
2458    }
2459    rgn1.setRects(rect, count);
2460
2461    if (rgn0 != rgn1) {
2462        SkDebugf("\n");
2463        for (int i = 0; i < count; i++) {
2464            dumpRect(rect[i]);
2465        }
2466        SkDebugf("\n");
2467    }
2468}
2469
2470static void test() {
2471    size_t i;
2472
2473    const SkIRect r0[] = {
2474        { 0, 0, 1, 1 },
2475        { 2, 2, 3, 3 },
2476    };
2477    const SkIRect r1[] = {
2478        { 0, 0, 1, 3 },
2479        { 1, 1, 2, 2 },
2480        { 2, 0, 3, 3 },
2481    };
2482    const SkIRect r2[] = {
2483        { 0, 0, 1, 2 },
2484        { 2, 1, 3, 3 },
2485        { 4, 0, 5, 1 },
2486        { 6, 0, 7, 4 },
2487    };
2488
2489    static const struct {
2490        const SkIRect* fRects;
2491        int            fCount;
2492    } gRecs[] = {
2493        { r0, SK_ARRAY_COUNT(r0) },
2494        { r1, SK_ARRAY_COUNT(r1) },
2495        { r2, SK_ARRAY_COUNT(r2) },
2496    };
2497
2498    for (i = 0; i < SK_ARRAY_COUNT(gRecs); i++) {
2499        test_rects(gRecs[i].fRects, gRecs[i].fCount);
2500    }
2501
2502    SkRandom rand;
2503    for (i = 0; i < 10000; i++) {
2504        SkRegion rgn0, rgn1;
2505
2506        const int N = 8;
2507        SkIRect rect[N];
2508        for (int j = 0; j < N; j++) {
2509            rand_rect(&rect[j], rand);
2510        }
2511        test_rects(rect, N);
2512    }
2513}
2514
2515// FIXME: this should be in a header
2516SkOSWindow* create_sk_window(void* hwnd, int argc, char** argv);
2517SkOSWindow* create_sk_window(void* hwnd, int argc, char** argv) {
2518    if (false) { // avoid bit rot, suppress warning
2519        test();
2520    }
2521    return new SampleWindow(hwnd, argc, argv, NULL);
2522}
2523
2524// FIXME: this should be in a header
2525void get_preferred_size(int* x, int* y, int* width, int* height);
2526void get_preferred_size(int* x, int* y, int* width, int* height) {
2527    *x = 10;
2528    *y = 50;
2529    *width = 640;
2530    *height = 480;
2531}
2532
2533#ifdef SK_BUILD_FOR_IOS
2534void save_args(int argc, char *argv[]) {
2535}
2536#endif
2537
2538// FIXME: this should be in a header
2539void application_init();
2540void application_init() {
2541//    setenv("ANDROID_ROOT", "../../../data", 0);
2542#ifdef SK_BUILD_FOR_MAC
2543    setenv("ANDROID_ROOT", "/android/device/data", 0);
2544#endif
2545    SkGraphics::Init();
2546    SkEvent::Init();
2547}
2548
2549// FIXME: this should be in a header
2550void application_term();
2551void application_term() {
2552    SkEvent::Term();
2553    SkGraphics::Term();
2554}
2555