1/*
2 * Copyright 2011 Google Inc.
3 *
4 * Use of this source code is governed by a BSD-style license that can be
5 * found in the LICENSE file.
6 */
7
8#include "SampleApp.h"
9
10#include "OverView.h"
11#include "SampleCode.h"
12#include "SamplePipeControllers.h"
13#include "SkCanvas.h"
14#include "SkCommandLineFlags.h"
15#include "SkData.h"
16#include "SkDevice.h"
17#include "SkGPipe.h"
18#include "SkGraphics.h"
19#include "SkImageEncoder.h"
20#include "SkOSFile.h"
21#include "SkPDFDevice.h"
22#include "SkPDFDocument.h"
23#include "SkPaint.h"
24#include "SkPicture.h"
25#include "SkPictureRecorder.h"
26#include "SkStream.h"
27#include "SkSurface.h"
28#include "SkTSort.h"
29#include "SkTime.h"
30#include "SkTypeface.h"
31#include "SkWindow.h"
32#include "TransitionView.h"
33#include "sk_tool_utils.h"
34
35#if SK_SUPPORT_GPU
36#include "gl/GrGLInterface.h"
37#include "gl/GrGLUtil.h"
38#include "GrRenderTarget.h"
39#include "GrContext.h"
40#include "SkGpuDevice.h"
41#else
42class GrContext;
43#endif
44
45extern SampleView* CreateSamplePictFileView(const char filename[]);
46
47class PictFileFactory : public SkViewFactory {
48    SkString fFilename;
49public:
50    PictFileFactory(const SkString& filename) : fFilename(filename) {}
51    virtual SkView* operator() () const SK_OVERRIDE {
52        return CreateSamplePictFileView(fFilename.c_str());
53    }
54};
55
56#ifdef SAMPLE_PDF_FILE_VIEWER
57extern SampleView* CreateSamplePdfFileViewer(const char filename[]);
58
59class PdfFileViewerFactory : public SkViewFactory {
60    SkString fFilename;
61public:
62    PdfFileViewerFactory(const SkString& filename) : fFilename(filename) {}
63    virtual SkView* operator() () const SK_OVERRIDE {
64        return CreateSamplePdfFileViewer(fFilename.c_str());
65    }
66};
67#endif  // SAMPLE_PDF_FILE_VIEWER
68
69#define PIPE_FILEx
70#ifdef  PIPE_FILE
71#define FILE_PATH "/path/to/drawing.data"
72#endif
73
74#define PIPE_NETx
75#ifdef  PIPE_NET
76#include "SkSockets.h"
77SkTCPServer gServer;
78#endif
79
80#define USE_ARROWS_FOR_ZOOM true
81
82#if SK_ANGLE
83//#define DEFAULT_TO_ANGLE 1
84#else
85#define DEFAULT_TO_GPU 0 // if 1 default rendering is on GPU
86#endif
87
88#define ANIMATING_EVENTTYPE "nextSample"
89#define ANIMATING_DELAY     250
90
91#ifdef SK_DEBUG
92    #define FPS_REPEAT_MULTIPLIER   1
93#else
94    #define FPS_REPEAT_MULTIPLIER   10
95#endif
96#define FPS_REPEAT_COUNT    (10 * FPS_REPEAT_MULTIPLIER)
97
98static SampleWindow* gSampleWindow;
99
100static bool gShowGMBounds;
101
102static void post_event_to_sink(SkEvent* evt, SkEventSink* sink) {
103    evt->setTargetID(sink->getSinkID())->post();
104}
105
106///////////////////////////////////////////////////////////////////////////////
107
108static const char* skip_until(const char* str, const char* skip) {
109    if (!str) {
110        return NULL;
111    }
112    return strstr(str, skip);
113}
114
115static const char* skip_past(const char* str, const char* skip) {
116    const char* found = skip_until(str, skip);
117    if (!found) {
118        return NULL;
119    }
120    return found + strlen(skip);
121}
122
123static const char* gPrefFileName = "sampleapp_prefs.txt";
124
125static bool readTitleFromPrefs(SkString* title) {
126    SkFILEStream stream(gPrefFileName);
127    if (!stream.isValid()) {
128        return false;
129    }
130
131    size_t len = stream.getLength();
132    SkString data(len);
133    stream.read(data.writable_str(), len);
134    const char* s = data.c_str();
135
136    s = skip_past(s, "curr-slide-title");
137    s = skip_past(s, "=");
138    s = skip_past(s, "\"");
139    const char* stop = skip_until(s, "\"");
140    if (stop > s) {
141        title->set(s, stop - s);
142        return true;
143    }
144    return false;
145}
146
147static void writeTitleToPrefs(const char* title) {
148    SkFILEWStream stream(gPrefFileName);
149    SkString data;
150    data.printf("curr-slide-title = \"%s\"\n", title);
151    stream.write(data.c_str(), data.size());
152}
153
154///////////////////////////////////////////////////////////////////////////////
155
156class SampleWindow::DefaultDeviceManager : public SampleWindow::DeviceManager {
157public:
158
159    DefaultDeviceManager() {
160#if SK_SUPPORT_GPU
161        fCurContext = NULL;
162        fCurIntf = NULL;
163        fCurRenderTarget = NULL;
164        fMSAASampleCount = 0;
165#endif
166        fBackend = kNone_BackEndType;
167    }
168
169    virtual ~DefaultDeviceManager() {
170#if SK_SUPPORT_GPU
171        SkSafeUnref(fCurContext);
172        SkSafeUnref(fCurIntf);
173        SkSafeUnref(fCurRenderTarget);
174#endif
175    }
176
177    virtual void setUpBackend(SampleWindow* win, int msaaSampleCount) {
178        SkASSERT(kNone_BackEndType == fBackend);
179
180        fBackend = kNone_BackEndType;
181
182#if SK_SUPPORT_GPU
183        switch (win->getDeviceType()) {
184            case kRaster_DeviceType:
185                // fallthrough
186            case kPicture_DeviceType:
187                // fallthrough
188            case kGPU_DeviceType:
189                // fallthrough
190            case kNullGPU_DeviceType:
191                // all these guys use the native backend
192                fBackend = kNativeGL_BackEndType;
193                break;
194#if SK_ANGLE
195            case kANGLE_DeviceType:
196                // ANGLE is really the only odd man out
197                fBackend = kANGLE_BackEndType;
198                break;
199#endif // SK_ANGLE
200            default:
201                SkASSERT(false);
202                break;
203        }
204        AttachmentInfo attachmentInfo;
205        bool result = win->attach(fBackend, msaaSampleCount, &attachmentInfo);
206        if (!result) {
207            SkDebugf("Failed to initialize GL");
208            return;
209        }
210        fMSAASampleCount = msaaSampleCount;
211
212        SkASSERT(NULL == fCurIntf);
213        SkAutoTUnref<const GrGLInterface> glInterface;
214        switch (win->getDeviceType()) {
215            case kRaster_DeviceType:
216                // fallthrough
217            case kPicture_DeviceType:
218                // fallthrough
219            case kGPU_DeviceType:
220                // all these guys use the native interface
221                glInterface.reset(GrGLCreateNativeInterface());
222                break;
223#if SK_ANGLE
224            case kANGLE_DeviceType:
225                glInterface.reset(GrGLCreateANGLEInterface());
226                break;
227#endif // SK_ANGLE
228            case kNullGPU_DeviceType:
229                glInterface.reset(GrGLCreateNullInterface());
230                break;
231            default:
232                SkASSERT(false);
233                break;
234        }
235
236        // Currently SampleApp does not use NVPR. TODO: Provide an NVPR device type that is skipped
237        // when the driver doesn't support NVPR.
238        fCurIntf = GrGLInterfaceRemoveNVPR(glInterface.get());
239
240        SkASSERT(NULL == fCurContext);
241        fCurContext = GrContext::Create(kOpenGL_GrBackend, (GrBackendContext) fCurIntf);
242
243        if (NULL == fCurContext || NULL == fCurIntf) {
244            // We need some context and interface to see results
245            SkSafeUnref(fCurContext);
246            SkSafeUnref(fCurIntf);
247            fCurContext = NULL;
248            fCurIntf = NULL;
249            SkDebugf("Failed to setup 3D");
250
251            win->detach();
252        }
253#endif // SK_SUPPORT_GPU
254        // call windowSizeChanged to create the render target
255        this->windowSizeChanged(win);
256    }
257
258    virtual void tearDownBackend(SampleWindow *win) {
259#if SK_SUPPORT_GPU
260        SkSafeUnref(fCurContext);
261        fCurContext = NULL;
262
263        SkSafeUnref(fCurIntf);
264        fCurIntf = NULL;
265
266        SkSafeUnref(fCurRenderTarget);
267        fCurRenderTarget = NULL;
268#endif
269        win->detach();
270        fBackend = kNone_BackEndType;
271    }
272
273    virtual SkCanvas* createCanvas(SampleWindow::DeviceType dType,
274                                   SampleWindow* win) {
275#if SK_SUPPORT_GPU
276        if (IsGpuDeviceType(dType) && NULL != fCurContext) {
277            SkAutoTUnref<SkBaseDevice> device(new SkGpuDevice(fCurContext, fCurRenderTarget));
278            return new SkCanvas(device);
279        } else
280#endif
281        {
282            return NULL;
283        }
284    }
285
286    virtual void publishCanvas(SampleWindow::DeviceType dType,
287                               SkCanvas* canvas,
288                               SampleWindow* win) {
289#if SK_SUPPORT_GPU
290        if (fCurContext) {
291            // in case we have queued drawing calls
292            fCurContext->flush();
293
294            if (!IsGpuDeviceType(dType)) {
295                // need to send the raster bits to the (gpu) window
296                fCurContext->setRenderTarget(fCurRenderTarget);
297                const SkBitmap& bm = win->getBitmap();
298                fCurRenderTarget->writePixels(0, 0, bm.width(), bm.height(),
299                                             SkImageInfo2GrPixelConfig(bm.colorType(),
300                                                                       bm.alphaType()),
301                                             bm.getPixels(),
302                                             bm.rowBytes());
303            }
304        }
305#endif
306
307        win->present();
308    }
309
310    virtual void windowSizeChanged(SampleWindow* win) {
311#if SK_SUPPORT_GPU
312        if (fCurContext) {
313            AttachmentInfo attachmentInfo;
314            win->attach(fBackend, fMSAASampleCount, &attachmentInfo);
315
316            GrBackendRenderTargetDesc desc;
317            desc.fWidth = SkScalarRoundToInt(win->width());
318            desc.fHeight = SkScalarRoundToInt(win->height());
319            desc.fConfig = kSkia8888_GrPixelConfig;
320            desc.fOrigin = kBottomLeft_GrSurfaceOrigin;
321            desc.fSampleCnt = attachmentInfo.fSampleCount;
322            desc.fStencilBits = attachmentInfo.fStencilBits;
323            GrGLint buffer;
324            GR_GL_GetIntegerv(fCurIntf, GR_GL_FRAMEBUFFER_BINDING, &buffer);
325            desc.fRenderTargetHandle = buffer;
326
327            SkSafeUnref(fCurRenderTarget);
328            fCurRenderTarget = fCurContext->wrapBackendRenderTarget(desc);
329        }
330#endif
331    }
332
333    virtual GrContext* getGrContext() {
334#if SK_SUPPORT_GPU
335        return fCurContext;
336#else
337        return NULL;
338#endif
339    }
340
341    virtual GrRenderTarget* getGrRenderTarget() SK_OVERRIDE {
342#if SK_SUPPORT_GPU
343        return fCurRenderTarget;
344#else
345        return NULL;
346#endif
347    }
348
349private:
350
351#if SK_SUPPORT_GPU
352    GrContext*              fCurContext;
353    const GrGLInterface*    fCurIntf;
354    GrRenderTarget*         fCurRenderTarget;
355    int fMSAASampleCount;
356#endif
357
358    SkOSWindow::SkBackEndTypes fBackend;
359
360    typedef SampleWindow::DeviceManager INHERITED;
361};
362
363///////////////
364static const char view_inval_msg[] = "view-inval-msg";
365
366void SampleWindow::postInvalDelay() {
367    (new SkEvent(view_inval_msg, this->getSinkID()))->postDelay(1);
368}
369
370static bool isInvalEvent(const SkEvent& evt) {
371    return evt.isType(view_inval_msg);
372}
373//////////////////
374
375SkFuncViewFactory::SkFuncViewFactory(SkViewCreateFunc func)
376    : fCreateFunc(func) {
377}
378
379SkView* SkFuncViewFactory::operator() () const {
380    return (*fCreateFunc)();
381}
382
383#include "GMSampleView.h"
384
385SkGMSampleViewFactory::SkGMSampleViewFactory(GMFactoryFunc func)
386    : fFunc(func) {
387}
388
389SkView* SkGMSampleViewFactory::operator() () const {
390    skiagm::GM* gm = fFunc(NULL);
391    gm->setMode(skiagm::GM::kSample_Mode);
392    return new GMSampleView(gm);
393}
394
395SkViewRegister* SkViewRegister::gHead;
396SkViewRegister::SkViewRegister(SkViewFactory* fact) : fFact(fact) {
397    fFact->ref();
398    fChain = gHead;
399    gHead = this;
400}
401
402SkViewRegister::SkViewRegister(SkViewCreateFunc func) {
403    fFact = new SkFuncViewFactory(func);
404    fChain = gHead;
405    gHead = this;
406}
407
408SkViewRegister::SkViewRegister(GMFactoryFunc func) {
409    fFact = new SkGMSampleViewFactory(func);
410    fChain = gHead;
411    gHead = this;
412}
413
414class AutoUnrefArray {
415public:
416    AutoUnrefArray() {}
417    ~AutoUnrefArray() {
418        int count = fObjs.count();
419        for (int i = 0; i < count; ++i) {
420            fObjs[i]->unref();
421        }
422    }
423    SkRefCnt*& push_back() { return *fObjs.append(); }
424
425private:
426    SkTDArray<SkRefCnt*> fObjs;
427};
428
429// registers GMs as Samples
430// This can't be performed during static initialization because it could be
431// run before GMRegistry has been fully built.
432static void SkGMRegistyToSampleRegistry() {
433    static bool gOnce;
434    static AutoUnrefArray fRegisters;
435
436    if (!gOnce) {
437        const skiagm::GMRegistry* gmreg = skiagm::GMRegistry::Head();
438        while (gmreg) {
439            fRegisters.push_back() = new SkViewRegister(gmreg->factory());
440            gmreg = gmreg->next();
441        }
442        gOnce = true;
443    }
444}
445
446//////////////////////////////////////////////////////////////////////////////
447
448enum FlipAxisEnum {
449    kFlipAxis_X = (1 << 0),
450    kFlipAxis_Y = (1 << 1)
451};
452
453#include "SkDrawFilter.h"
454
455struct HintingState {
456    SkPaint::Hinting hinting;
457    const char* name;
458    const char* label;
459};
460static HintingState gHintingStates[] = {
461    {SkPaint::kNo_Hinting, "Mixed", NULL },
462    {SkPaint::kNo_Hinting, "None", "H0 " },
463    {SkPaint::kSlight_Hinting, "Slight", "Hs " },
464    {SkPaint::kNormal_Hinting, "Normal", "Hn " },
465    {SkPaint::kFull_Hinting, "Full", "Hf " },
466};
467
468struct FilterLevelState {
469    SkPaint::FilterLevel    fLevel;
470    const char*             fName;
471    const char*             fLabel;
472};
473static FilterLevelState gFilterLevelStates[] = {
474    { SkPaint::kNone_FilterLevel,   "Mixed",    NULL    },
475    { SkPaint::kNone_FilterLevel,   "None",     "F0 "   },
476    { SkPaint::kLow_FilterLevel,    "Low",      "F1 "   },
477    { SkPaint::kMedium_FilterLevel, "Medium",   "F2 "   },
478    { SkPaint::kHigh_FilterLevel,   "High",     "F3 "   },
479};
480
481class FlagsDrawFilter : public SkDrawFilter {
482public:
483    FlagsDrawFilter(SkOSMenu::TriState lcd, SkOSMenu::TriState aa,
484                    SkOSMenu::TriState subpixel, int hinting, int filterlevel)
485        : fLCDState(lcd)
486        , fAAState(aa)
487        , fSubpixelState(subpixel)
488        , fHintingState(hinting)
489        , fFilterLevelIndex(filterlevel)
490    {
491        SkASSERT((unsigned)filterlevel < SK_ARRAY_COUNT(gFilterLevelStates));
492    }
493
494    virtual bool filter(SkPaint* paint, Type t) {
495        if (kText_Type == t && SkOSMenu::kMixedState != fLCDState) {
496            paint->setLCDRenderText(SkOSMenu::kOnState == fLCDState);
497        }
498        if (SkOSMenu::kMixedState != fAAState) {
499            paint->setAntiAlias(SkOSMenu::kOnState == fAAState);
500        }
501        if (0 != fFilterLevelIndex) {
502            paint->setFilterLevel(gFilterLevelStates[fFilterLevelIndex].fLevel);
503        }
504        if (SkOSMenu::kMixedState != fSubpixelState) {
505            paint->setSubpixelText(SkOSMenu::kOnState == fSubpixelState);
506        }
507        if (0 != fHintingState && fHintingState < (int)SK_ARRAY_COUNT(gHintingStates)) {
508            paint->setHinting(gHintingStates[fHintingState].hinting);
509        }
510        return true;
511    }
512
513private:
514    SkOSMenu::TriState  fLCDState;
515    SkOSMenu::TriState  fAAState;
516    SkOSMenu::TriState  fSubpixelState;
517    int fHintingState;
518    int fFilterLevelIndex;
519};
520
521//////////////////////////////////////////////////////////////////////////////
522
523#define MAX_ZOOM_LEVEL  8
524#define MIN_ZOOM_LEVEL  -8
525
526static const char gCharEvtName[] = "SampleCode_Char_Event";
527static const char gKeyEvtName[] = "SampleCode_Key_Event";
528static const char gTitleEvtName[] = "SampleCode_Title_Event";
529static const char gPrefSizeEvtName[] = "SampleCode_PrefSize_Event";
530static const char gFastTextEvtName[] = "SampleCode_FastText_Event";
531static const char gUpdateWindowTitleEvtName[] = "SampleCode_UpdateWindowTitle";
532
533bool SampleCode::CharQ(const SkEvent& evt, SkUnichar* outUni) {
534    if (evt.isType(gCharEvtName, sizeof(gCharEvtName) - 1)) {
535        if (outUni) {
536            *outUni = evt.getFast32();
537        }
538        return true;
539    }
540    return false;
541}
542
543bool SampleCode::KeyQ(const SkEvent& evt, SkKey* outKey) {
544    if (evt.isType(gKeyEvtName, sizeof(gKeyEvtName) - 1)) {
545        if (outKey) {
546            *outKey = (SkKey)evt.getFast32();
547        }
548        return true;
549    }
550    return false;
551}
552
553bool SampleCode::TitleQ(const SkEvent& evt) {
554    return evt.isType(gTitleEvtName, sizeof(gTitleEvtName) - 1);
555}
556
557void SampleCode::TitleR(SkEvent* evt, const char title[]) {
558    SkASSERT(evt && TitleQ(*evt));
559    evt->setString(gTitleEvtName, title);
560}
561
562bool SampleCode::RequestTitle(SkView* view, SkString* title) {
563    SkEvent evt(gTitleEvtName);
564    if (view->doQuery(&evt)) {
565        title->set(evt.findString(gTitleEvtName));
566        return true;
567    }
568    return false;
569}
570
571bool SampleCode::PrefSizeQ(const SkEvent& evt) {
572    return evt.isType(gPrefSizeEvtName, sizeof(gPrefSizeEvtName) - 1);
573}
574
575void SampleCode::PrefSizeR(SkEvent* evt, SkScalar width, SkScalar height) {
576    SkASSERT(evt && PrefSizeQ(*evt));
577    SkScalar size[2];
578    size[0] = width;
579    size[1] = height;
580    evt->setScalars(gPrefSizeEvtName, 2, size);
581}
582
583bool SampleCode::FastTextQ(const SkEvent& evt) {
584    return evt.isType(gFastTextEvtName, sizeof(gFastTextEvtName) - 1);
585}
586
587///////////////////////////////////////////////////////////////////////////////
588
589static SkMSec gAnimTime;
590static SkMSec gAnimTimePrev;
591
592SkMSec SampleCode::GetAnimTime() { return gAnimTime; }
593SkMSec SampleCode::GetAnimTimeDelta() { return gAnimTime - gAnimTimePrev; }
594SkScalar SampleCode::GetAnimSecondsDelta() {
595    return SkDoubleToScalar(GetAnimTimeDelta() / 1000.0);
596}
597
598SkScalar SampleCode::GetAnimScalar(SkScalar speed, SkScalar period) {
599    // since gAnimTime can be up to 32 bits, we can't convert it to a float
600    // or we'll lose the low bits. Hence we use doubles for the intermediate
601    // calculations
602    double seconds = (double)gAnimTime / 1000.0;
603    double value = SkScalarToDouble(speed) * seconds;
604    if (period) {
605        value = ::fmod(value, SkScalarToDouble(period));
606    }
607    return SkDoubleToScalar(value);
608}
609
610SkScalar SampleCode::GetAnimSinScalar(SkScalar amplitude,
611                                      SkScalar periodInSec,
612                                      SkScalar phaseInSec) {
613    if (!periodInSec) {
614        return 0;
615    }
616    double t = (double)gAnimTime / 1000.0 + phaseInSec;
617    t *= SkScalarToFloat(2 * SK_ScalarPI) / periodInSec;
618    amplitude = SK_ScalarHalf * amplitude;
619    return SkScalarMul(amplitude, SkDoubleToScalar(sin(t))) + amplitude;
620}
621
622enum TilingMode {
623    kNo_Tiling,
624    kAbs_128x128_Tiling,
625    kAbs_256x256_Tiling,
626    kRel_4x4_Tiling,
627    kRel_1x16_Tiling,
628    kRel_16x1_Tiling,
629
630    kLast_TilingMode_Enum
631};
632
633struct TilingInfo {
634    const char* label;
635    SkScalar    w, h;
636};
637
638static const struct TilingInfo gTilingInfo[] = {
639    { "No tiling", SK_Scalar1        , SK_Scalar1         }, // kNo_Tiling
640    { "128x128"  , SkIntToScalar(128), SkIntToScalar(128) }, // kAbs_128x128_Tiling
641    { "256x256"  , SkIntToScalar(256), SkIntToScalar(256) }, // kAbs_256x256_Tiling
642    { "1/4x1/4"  , SK_Scalar1 / 4    , SK_Scalar1 / 4     }, // kRel_4x4_Tiling
643    { "1/1x1/16" , SK_Scalar1        , SK_Scalar1 / 16    }, // kRel_1x16_Tiling
644    { "1/16x1/1" , SK_Scalar1 / 16   , SK_Scalar1         }, // kRel_16x1_Tiling
645};
646SK_COMPILE_ASSERT((SK_ARRAY_COUNT(gTilingInfo) == kLast_TilingMode_Enum),
647                  Incomplete_tiling_labels);
648
649SkSize SampleWindow::tileSize() const {
650    SkASSERT((TilingMode)fTilingMode < kLast_TilingMode_Enum);
651    const struct TilingInfo* info = gTilingInfo + fTilingMode;
652    return SkSize::Make(info->w > SK_Scalar1 ? info->w : this->width() * info->w,
653                        info->h > SK_Scalar1 ? info->h : this->height() * info->h);
654}
655//////////////////////////////////////////////////////////////////////////////
656
657static SkView* curr_view(SkWindow* wind) {
658    SkView::F2BIter iter(wind);
659    return iter.next();
660}
661
662static bool curr_title(SkWindow* wind, SkString* title) {
663    SkView* view = curr_view(wind);
664    if (view) {
665        SkEvent evt(gTitleEvtName);
666        if (view->doQuery(&evt)) {
667            title->set(evt.findString(gTitleEvtName));
668            return true;
669        }
670    }
671    return false;
672}
673
674void SampleWindow::setZoomCenter(float x, float y)
675{
676    fZoomCenterX = x;
677    fZoomCenterY = y;
678}
679
680bool SampleWindow::zoomIn()
681{
682    // Arbitrarily decided
683    if (fFatBitsScale == 25) return false;
684    fFatBitsScale++;
685    this->inval(NULL);
686    return true;
687}
688
689bool SampleWindow::zoomOut()
690{
691    if (fFatBitsScale == 1) return false;
692    fFatBitsScale--;
693    this->inval(NULL);
694    return true;
695}
696
697void SampleWindow::updatePointer(int x, int y)
698{
699    fMouseX = x;
700    fMouseY = y;
701    if (fShowZoomer) {
702        this->inval(NULL);
703    }
704}
705
706static inline SampleWindow::DeviceType cycle_devicetype(SampleWindow::DeviceType ct) {
707    static const SampleWindow::DeviceType gCT[] = {
708        SampleWindow::kPicture_DeviceType,
709#if SK_SUPPORT_GPU
710        SampleWindow::kGPU_DeviceType,
711#if SK_ANGLE
712        SampleWindow::kANGLE_DeviceType,
713#endif // SK_ANGLE
714        SampleWindow::kRaster_DeviceType, // skip the null gpu device in normal cycling
715#endif // SK_SUPPORT_GPU
716        SampleWindow::kRaster_DeviceType
717    };
718    SK_COMPILE_ASSERT(SK_ARRAY_COUNT(gCT) == SampleWindow::kDeviceTypeCnt, array_size_mismatch);
719    return gCT[ct];
720}
721
722static SkString getSampleTitle(const SkViewFactory* sampleFactory) {
723    SkView* view = (*sampleFactory)();
724    SkString title;
725    SampleCode::RequestTitle(view, &title);
726    view->unref();
727    return title;
728}
729
730static bool compareSampleTitle(const SkViewFactory* first, const SkViewFactory* second) {
731    return strcmp(getSampleTitle(first).c_str(), getSampleTitle(second).c_str()) < 0;
732}
733
734DEFINE_string(slide, "", "Start on this sample.");
735DEFINE_int32(msaa, 0, "Request multisampling with this count.");
736DEFINE_string(pictureDir, "", "Read pictures from here.");
737DEFINE_string(picture, "", "Path to single picture.");
738DEFINE_bool(sort, false, "Sort samples by title.");
739DEFINE_bool(list, false, "List samples?");
740#ifdef SAMPLE_PDF_FILE_VIEWER
741DEFINE_string(pdfPath, "", "Path to direcotry of pdf files.");
742#endif
743
744SampleWindow::SampleWindow(void* hwnd, int argc, char** argv, DeviceManager* devManager)
745    : INHERITED(hwnd)
746    , fDevManager(NULL) {
747
748    SkCommandLineFlags::Parse(argc, argv);
749
750    fCurrIndex = -1;
751
752    if (!FLAGS_pictureDir.isEmpty()) {
753        SkOSFile::Iter iter(FLAGS_pictureDir[0], "skp");
754        SkString filename;
755        while (iter.next(&filename)) {
756            *fSamples.append() = new PictFileFactory(
757                    SkOSPath::SkPathJoin(FLAGS_pictureDir[0], filename.c_str()));
758        }
759    }
760    if (!FLAGS_picture.isEmpty()) {
761        SkString path(FLAGS_picture[0]);
762        fCurrIndex = fSamples.count();
763        *fSamples.append() = new PictFileFactory(path);
764    }
765#ifdef SAMPLE_PDF_FILE_VIEWER
766    if (!FLAGS_pdfPath.isEmpty()) {
767        SkOSFile::Iter iter(FLAGS_pdfPath[0], "pdf");
768        SkString filename;
769        while (iter.next(&filename)) {
770            *fSamples.append() = new PdfFileViewerFactory(
771                    SkOSPath::SkPathJoin(FLAGS_pictureDir[0], filename.c_str()));
772        }
773    }
774#endif
775    SkGMRegistyToSampleRegistry();
776    {
777        const SkViewRegister* reg = SkViewRegister::Head();
778        while (reg) {
779            *fSamples.append() = reg->factory();
780            reg = reg->next();
781        }
782    }
783
784    if (FLAGS_sort) {
785        // Sort samples, so foo.skp and foo.pdf are consecutive and we can quickly spot where
786        // skp -> pdf -> png fails.
787        SkTQSort(fSamples.begin(), fSamples.end() ? fSamples.end() - 1 : NULL, compareSampleTitle);
788    }
789
790    if (!FLAGS_slide.isEmpty()) {
791        fCurrIndex = findByTitle(FLAGS_slide[0]);
792        if (fCurrIndex < 0) {
793            fprintf(stderr, "Unknown sample \"%s\"\n", FLAGS_slide[0]);
794            listTitles();
795        }
796    }
797
798    fMSAASampleCount = FLAGS_msaa;
799
800    if (FLAGS_list) {
801        listTitles();
802    }
803
804    if (fCurrIndex < 0) {
805        SkString title;
806        if (readTitleFromPrefs(&title)) {
807            fCurrIndex = findByTitle(title.c_str());
808        }
809    }
810
811    if (fCurrIndex < 0) {
812        fCurrIndex = 0;
813    }
814
815    gSampleWindow = this;
816
817#ifdef  PIPE_FILE
818    //Clear existing file or create file if it doesn't exist
819    FILE* f = fopen(FILE_PATH, "wb");
820    fclose(f);
821#endif
822
823    fDeviceType = kRaster_DeviceType;
824
825#if DEFAULT_TO_GPU
826    fDeviceType = kGPU_DeviceType;
827#endif
828#if SK_ANGLE && DEFAULT_TO_ANGLE
829    fDeviceType = kANGLE_DeviceType;
830#endif
831
832    fUseClip = false;
833    fNClip = false;
834    fAnimating = false;
835    fRotate = false;
836    fRotateAnimTime = 0;
837    fPerspAnim = false;
838    fPerspAnimTime = 0;
839    fRequestGrabImage = false;
840    fPipeState = SkOSMenu::kOffState;
841    fTilingMode = kNo_Tiling;
842    fMeasureFPS = false;
843    fLCDState = SkOSMenu::kMixedState;
844    fAAState = SkOSMenu::kMixedState;
845    fSubpixelState = SkOSMenu::kMixedState;
846    fHintingState = 0;
847    fFilterLevelIndex = 0;
848    fFlipAxis = 0;
849    fScrollTestX = fScrollTestY = 0;
850
851    fMouseX = fMouseY = 0;
852    fFatBitsScale = 8;
853    fTypeface = SkTypeface::CreateFromTypeface(NULL, SkTypeface::kBold);
854    fShowZoomer = false;
855
856    fZoomLevel = 0;
857    fZoomScale = SK_Scalar1;
858
859    fMagnify = false;
860
861    fSaveToPdf = false;
862    fPdfCanvas = NULL;
863
864    fTransitionNext = 6;
865    fTransitionPrev = 2;
866
867    int sinkID = this->getSinkID();
868    fAppMenu = new SkOSMenu;
869    fAppMenu->setTitle("Global Settings");
870    int itemID;
871
872    itemID =fAppMenu->appendList("Device Type", "Device Type", sinkID, 0,
873                                "Raster", "Picture", "OpenGL",
874#if SK_ANGLE
875                                "ANGLE",
876#endif
877                                NULL);
878    fAppMenu->assignKeyEquivalentToItem(itemID, 'd');
879    itemID = fAppMenu->appendTriState("AA", "AA", sinkID, fAAState);
880    fAppMenu->assignKeyEquivalentToItem(itemID, 'b');
881    itemID = fAppMenu->appendTriState("LCD", "LCD", sinkID, fLCDState);
882    fAppMenu->assignKeyEquivalentToItem(itemID, 'l');
883    itemID = fAppMenu->appendList("FilterLevel", "FilterLevel", sinkID, fFilterLevelIndex,
884                                  gFilterLevelStates[0].fName,
885                                  gFilterLevelStates[1].fName,
886                                  gFilterLevelStates[2].fName,
887                                  gFilterLevelStates[3].fName,
888                                  gFilterLevelStates[4].fName,
889                                  NULL);
890    fAppMenu->assignKeyEquivalentToItem(itemID, 'n');
891    itemID = fAppMenu->appendTriState("Subpixel", "Subpixel", sinkID, fSubpixelState);
892    fAppMenu->assignKeyEquivalentToItem(itemID, 's');
893    itemID = fAppMenu->appendList("Hinting", "Hinting", sinkID, fHintingState,
894                                  gHintingStates[0].name,
895                                  gHintingStates[1].name,
896                                  gHintingStates[2].name,
897                                  gHintingStates[3].name,
898                                  gHintingStates[4].name,
899                                  NULL);
900    fAppMenu->assignKeyEquivalentToItem(itemID, 'h');
901
902    fUsePipeMenuItemID = fAppMenu->appendTriState("Pipe", "Pipe" , sinkID,
903                                                  fPipeState);
904    fAppMenu->assignKeyEquivalentToItem(fUsePipeMenuItemID, 'P');
905
906    itemID =fAppMenu->appendList("Tiling", "Tiling", sinkID, fTilingMode,
907                                 gTilingInfo[kNo_Tiling].label,
908                                 gTilingInfo[kAbs_128x128_Tiling].label,
909                                 gTilingInfo[kAbs_256x256_Tiling].label,
910                                 gTilingInfo[kRel_4x4_Tiling].label,
911                                 gTilingInfo[kRel_1x16_Tiling].label,
912                                 gTilingInfo[kRel_16x1_Tiling].label,
913                                 NULL);
914    fAppMenu->assignKeyEquivalentToItem(itemID, 't');
915
916    itemID = fAppMenu->appendSwitch("Slide Show", "Slide Show" , sinkID, false);
917    fAppMenu->assignKeyEquivalentToItem(itemID, 'a');
918    itemID = fAppMenu->appendSwitch("Clip", "Clip" , sinkID, fUseClip);
919    fAppMenu->assignKeyEquivalentToItem(itemID, 'c');
920    itemID = fAppMenu->appendSwitch("Flip X", "Flip X" , sinkID, false);
921    fAppMenu->assignKeyEquivalentToItem(itemID, 'x');
922    itemID = fAppMenu->appendSwitch("Flip Y", "Flip Y" , sinkID, false);
923    fAppMenu->assignKeyEquivalentToItem(itemID, 'y');
924    itemID = fAppMenu->appendSwitch("Zoomer", "Zoomer" , sinkID, fShowZoomer);
925    fAppMenu->assignKeyEquivalentToItem(itemID, 'z');
926    itemID = fAppMenu->appendSwitch("Magnify", "Magnify" , sinkID, fMagnify);
927    fAppMenu->assignKeyEquivalentToItem(itemID, 'm');
928    itemID =fAppMenu->appendList("Transition-Next", "Transition-Next", sinkID,
929                                fTransitionNext, "Up", "Up and Right", "Right",
930                                "Down and Right", "Down", "Down and Left",
931                                "Left", "Up and Left", NULL);
932    fAppMenu->assignKeyEquivalentToItem(itemID, 'j');
933    itemID =fAppMenu->appendList("Transition-Prev", "Transition-Prev", sinkID,
934                                fTransitionPrev, "Up", "Up and Right", "Right",
935                                "Down and Right", "Down", "Down and Left",
936                                "Left", "Up and Left", NULL);
937    fAppMenu->assignKeyEquivalentToItem(itemID, 'k');
938    itemID = fAppMenu->appendAction("Save to PDF", sinkID);
939    fAppMenu->assignKeyEquivalentToItem(itemID, 'e');
940
941    this->addMenu(fAppMenu);
942    fSlideMenu = new SkOSMenu;
943    this->addMenu(fSlideMenu);
944
945    this->setColorType(kN32_SkColorType);
946    this->setVisibleP(true);
947    this->setClipToBounds(false);
948
949    this->loadView((*fSamples[fCurrIndex])());
950
951    fPDFData = NULL;
952
953    if (NULL == devManager) {
954        fDevManager = new DefaultDeviceManager();
955    } else {
956        devManager->ref();
957        fDevManager = devManager;
958    }
959    fDevManager->setUpBackend(this, fMSAASampleCount);
960
961    // If another constructor set our dimensions, ensure that our
962    // onSizeChange gets called.
963    if (this->height() && this->width()) {
964        this->onSizeChange();
965    }
966
967    // can't call this synchronously, since it may require a subclass to
968    // to implement, or the caller may need us to have returned from the
969    // constructor first. Hence we post an event to ourselves.
970//    this->updateTitle();
971    post_event_to_sink(new SkEvent(gUpdateWindowTitleEvtName), this);
972}
973
974SampleWindow::~SampleWindow() {
975    delete fPdfCanvas;
976    fTypeface->unref();
977
978    SkSafeUnref(fDevManager);
979}
980
981
982int SampleWindow::findByTitle(const char title[]) {
983    int i, count = fSamples.count();
984    for (i = 0; i < count; i++) {
985        if (getSampleTitle(i).equals(title)) {
986            return i;
987        }
988    }
989    return -1;
990}
991
992void SampleWindow::listTitles() {
993    int count = fSamples.count();
994    SkDebugf("All Slides:\n");
995    for (int i = 0; i < count; i++) {
996        SkDebugf("    %s\n", getSampleTitle(i).c_str());
997    }
998}
999
1000static SkBitmap capture_bitmap(SkCanvas* canvas) {
1001    SkBitmap bm;
1002    if (bm.allocPixels(canvas->imageInfo())) {
1003        canvas->readPixels(&bm, 0, 0);
1004    }
1005    return bm;
1006}
1007
1008static bool bitmap_diff(SkCanvas* canvas, const SkBitmap& orig,
1009                        SkBitmap* diff) {
1010    const SkBitmap& src = canvas->getDevice()->accessBitmap(false);
1011
1012    SkAutoLockPixels alp0(src);
1013    SkAutoLockPixels alp1(orig);
1014    for (int y = 0; y < src.height(); y++) {
1015        const void* srcP = src.getAddr(0, y);
1016        const void* origP = orig.getAddr(0, y);
1017        size_t bytes = src.width() * src.bytesPerPixel();
1018        if (memcmp(srcP, origP, bytes)) {
1019            SkDebugf("---------- difference on line %d\n", y);
1020            return true;
1021        }
1022    }
1023    return false;
1024}
1025
1026static void drawText(SkCanvas* canvas, SkString string, SkScalar left, SkScalar top, SkPaint& paint)
1027{
1028    SkColor desiredColor = paint.getColor();
1029    paint.setColor(SK_ColorWHITE);
1030    const char* c_str = string.c_str();
1031    size_t size = string.size();
1032    SkRect bounds;
1033    paint.measureText(c_str, size, &bounds);
1034    bounds.offset(left, top);
1035    SkScalar inset = SkIntToScalar(-2);
1036    bounds.inset(inset, inset);
1037    canvas->drawRect(bounds, paint);
1038    if (desiredColor != SK_ColorBLACK) {
1039        paint.setColor(SK_ColorBLACK);
1040        canvas->drawText(c_str, size, left + SK_Scalar1, top + SK_Scalar1, paint);
1041    }
1042    paint.setColor(desiredColor);
1043    canvas->drawText(c_str, size, left, top, paint);
1044}
1045
1046#define XCLIP_N  8
1047#define YCLIP_N  8
1048
1049void SampleWindow::draw(SkCanvas* canvas) {
1050    // update the animation time
1051    if (!gAnimTimePrev && !gAnimTime) {
1052        // first time make delta be 0
1053        gAnimTime = SkTime::GetMSecs();
1054        gAnimTimePrev = gAnimTime;
1055    } else {
1056        gAnimTimePrev = gAnimTime;
1057        gAnimTime = SkTime::GetMSecs();
1058    }
1059
1060    if (fGesture.isActive()) {
1061        this->updateMatrix();
1062    }
1063
1064    if (fMeasureFPS) {
1065        fMeasureFPS_Time = 0;
1066    }
1067
1068    if (fNClip) {
1069        this->INHERITED::draw(canvas);
1070        SkBitmap orig = capture_bitmap(canvas);
1071
1072        const SkScalar w = this->width();
1073        const SkScalar h = this->height();
1074        const SkScalar cw = w / XCLIP_N;
1075        const SkScalar ch = h / YCLIP_N;
1076        for (int y = 0; y < YCLIP_N; y++) {
1077            SkRect r;
1078            r.fTop = y * ch;
1079            r.fBottom = (y + 1) * ch;
1080            if (y == YCLIP_N - 1) {
1081                r.fBottom = h;
1082            }
1083            for (int x = 0; x < XCLIP_N; x++) {
1084                SkAutoCanvasRestore acr(canvas, true);
1085                r.fLeft = x * cw;
1086                r.fRight = (x + 1) * cw;
1087                if (x == XCLIP_N - 1) {
1088                    r.fRight = w;
1089                }
1090                canvas->clipRect(r);
1091                this->INHERITED::draw(canvas);
1092            }
1093        }
1094
1095        SkBitmap diff;
1096        if (bitmap_diff(canvas, orig, &diff)) {
1097        }
1098    } else {
1099        SkSize tile = this->tileSize();
1100
1101        if (kNo_Tiling == fTilingMode) {
1102            this->INHERITED::draw(canvas); // no looping or surfaces needed
1103        } else {
1104            const int w = SkScalarRoundToInt(tile.width());
1105            const int h = SkScalarRoundToInt(tile.height());
1106            SkImageInfo info = SkImageInfo::MakeN32Premul(w, h);
1107            SkAutoTUnref<SkSurface> surface(canvas->newSurface(info));
1108            SkCanvas* tileCanvas = surface->getCanvas();
1109
1110            for (SkScalar y = 0; y < height(); y += tile.height()) {
1111                for (SkScalar x = 0; x < width(); x += tile.width()) {
1112                    SkAutoCanvasRestore acr(tileCanvas, true);
1113                    tileCanvas->translate(-x, -y);
1114                    tileCanvas->clear(0);
1115                    this->INHERITED::draw(tileCanvas);
1116                    surface->draw(canvas, x, y, NULL);
1117                }
1118            }
1119
1120            // for drawing the borders between tiles
1121            SkPaint paint;
1122            paint.setColor(0x60FF00FF);
1123            paint.setStyle(SkPaint::kStroke_Style);
1124
1125            for (SkScalar y = 0; y < height(); y += tile.height()) {
1126                for (SkScalar x = 0; x < width(); x += tile.width()) {
1127                    canvas->drawRect(SkRect::MakeXYWH(x, y, tile.width(), tile.height()), paint);
1128                }
1129            }
1130        }
1131    }
1132    if (fShowZoomer && !fSaveToPdf) {
1133        showZoomer(canvas);
1134    }
1135    if (fMagnify && !fSaveToPdf) {
1136        magnify(canvas);
1137    }
1138
1139    if (fMeasureFPS && fMeasureFPS_Time) {
1140        this->updateTitle();
1141        this->postInvalDelay();
1142    }
1143
1144    // do this last
1145    fDevManager->publishCanvas(fDeviceType, canvas, this);
1146}
1147
1148static float clipW = 200;
1149static float clipH = 200;
1150void SampleWindow::magnify(SkCanvas* canvas) {
1151    SkRect r;
1152    int count = canvas->save();
1153
1154    SkMatrix m = canvas->getTotalMatrix();
1155    if (!m.invert(&m)) {
1156        return;
1157    }
1158    SkPoint offset, center;
1159    SkScalar mouseX = fMouseX * SK_Scalar1;
1160    SkScalar mouseY = fMouseY * SK_Scalar1;
1161    m.mapXY(mouseX - clipW/2, mouseY - clipH/2, &offset);
1162    m.mapXY(mouseX, mouseY, &center);
1163
1164    r.set(0, 0, clipW * m.getScaleX(), clipH * m.getScaleX());
1165    r.offset(offset.fX, offset.fY);
1166
1167    SkPaint paint;
1168    paint.setColor(0xFF66AAEE);
1169    paint.setStyle(SkPaint::kStroke_Style);
1170    paint.setStrokeWidth(10.f * m.getScaleX());
1171    //lense offset
1172    //canvas->translate(0, -250);
1173    canvas->drawRect(r, paint);
1174    canvas->clipRect(r);
1175
1176    m = canvas->getTotalMatrix();
1177    m.setTranslate(-center.fX, -center.fY);
1178    m.postScale(0.5f * fFatBitsScale, 0.5f * fFatBitsScale);
1179    m.postTranslate(center.fX, center.fY);
1180    canvas->concat(m);
1181
1182    this->INHERITED::draw(canvas);
1183
1184    canvas->restoreToCount(count);
1185}
1186
1187void SampleWindow::showZoomer(SkCanvas* canvas) {
1188        int count = canvas->save();
1189        canvas->resetMatrix();
1190        // Ensure the mouse position is on screen.
1191        int width = SkScalarRoundToInt(this->width());
1192        int height = SkScalarRoundToInt(this->height());
1193        if (fMouseX >= width) fMouseX = width - 1;
1194        else if (fMouseX < 0) fMouseX = 0;
1195        if (fMouseY >= height) fMouseY = height - 1;
1196        else if (fMouseY < 0) fMouseY = 0;
1197
1198        SkBitmap bitmap = capture_bitmap(canvas);
1199        bitmap.lockPixels();
1200
1201        // Find the size of the zoomed in view, forced to be odd, so the examined pixel is in the middle.
1202        int zoomedWidth = (width >> 1) | 1;
1203        int zoomedHeight = (height >> 1) | 1;
1204        SkIRect src;
1205        src.set(0, 0, zoomedWidth / fFatBitsScale, zoomedHeight / fFatBitsScale);
1206        src.offset(fMouseX - (src.width()>>1), fMouseY - (src.height()>>1));
1207        SkRect dest;
1208        dest.set(0, 0, SkIntToScalar(zoomedWidth), SkIntToScalar(zoomedHeight));
1209        dest.offset(SkIntToScalar(width - zoomedWidth), SkIntToScalar(height - zoomedHeight));
1210        SkPaint paint;
1211        // Clear the background behind our zoomed in view
1212        paint.setColor(SK_ColorWHITE);
1213        canvas->drawRect(dest, paint);
1214        canvas->drawBitmapRect(bitmap, &src, dest);
1215        paint.setColor(SK_ColorBLACK);
1216        paint.setStyle(SkPaint::kStroke_Style);
1217        // Draw a border around the pixel in the middle
1218        SkRect originalPixel;
1219        originalPixel.set(SkIntToScalar(fMouseX), SkIntToScalar(fMouseY), SkIntToScalar(fMouseX + 1), SkIntToScalar(fMouseY + 1));
1220        SkMatrix matrix;
1221        SkRect scalarSrc;
1222        scalarSrc.set(src);
1223        SkColor color = bitmap.getColor(fMouseX, fMouseY);
1224        if (matrix.setRectToRect(scalarSrc, dest, SkMatrix::kFill_ScaleToFit)) {
1225            SkRect pixel;
1226            matrix.mapRect(&pixel, originalPixel);
1227            // TODO Perhaps measure the values and make the outline white if it's "dark"
1228            if (color == SK_ColorBLACK) {
1229                paint.setColor(SK_ColorWHITE);
1230            }
1231            canvas->drawRect(pixel, paint);
1232        }
1233        paint.setColor(SK_ColorBLACK);
1234        // Draw a border around the destination rectangle
1235        canvas->drawRect(dest, paint);
1236        paint.setStyle(SkPaint::kStrokeAndFill_Style);
1237        // Identify the pixel and its color on screen
1238        paint.setTypeface(fTypeface);
1239        paint.setAntiAlias(true);
1240        SkScalar lineHeight = paint.getFontMetrics(NULL);
1241        SkString string;
1242        string.appendf("(%i, %i)", fMouseX, fMouseY);
1243        SkScalar left = dest.fLeft + SkIntToScalar(3);
1244        SkScalar i = SK_Scalar1;
1245        drawText(canvas, string, left, SkScalarMulAdd(lineHeight, i, dest.fTop), paint);
1246        // Alpha
1247        i += SK_Scalar1;
1248        string.reset();
1249        string.appendf("A: %X", SkColorGetA(color));
1250        drawText(canvas, string, left, SkScalarMulAdd(lineHeight, i, dest.fTop), paint);
1251        // Red
1252        i += SK_Scalar1;
1253        string.reset();
1254        string.appendf("R: %X", SkColorGetR(color));
1255        paint.setColor(SK_ColorRED);
1256        drawText(canvas, string, left, SkScalarMulAdd(lineHeight, i, dest.fTop), paint);
1257        // Green
1258        i += SK_Scalar1;
1259        string.reset();
1260        string.appendf("G: %X", SkColorGetG(color));
1261        paint.setColor(SK_ColorGREEN);
1262        drawText(canvas, string, left, SkScalarMulAdd(lineHeight, i, dest.fTop), paint);
1263        // Blue
1264        i += SK_Scalar1;
1265        string.reset();
1266        string.appendf("B: %X", SkColorGetB(color));
1267        paint.setColor(SK_ColorBLUE);
1268        drawText(canvas, string, left, SkScalarMulAdd(lineHeight, i, dest.fTop), paint);
1269        canvas->restoreToCount(count);
1270}
1271
1272void SampleWindow::onDraw(SkCanvas* canvas) {
1273}
1274
1275#include "SkColorPriv.h"
1276
1277void SampleWindow::saveToPdf()
1278{
1279    fSaveToPdf = true;
1280    this->inval(NULL);
1281}
1282
1283SkCanvas* SampleWindow::beforeChildren(SkCanvas* canvas) {
1284    if (fSaveToPdf) {
1285        const SkBitmap& bmp = canvas->getDevice()->accessBitmap(false);
1286        SkISize size = SkISize::Make(bmp.width(), bmp.height());
1287        SkPDFDevice* pdfDevice = new SkPDFDevice(size, size,
1288                canvas->getTotalMatrix());
1289        fPdfCanvas = new SkCanvas(pdfDevice);
1290        pdfDevice->unref();
1291        canvas = fPdfCanvas;
1292    } else if (kPicture_DeviceType == fDeviceType) {
1293        canvas = fRecorder.beginRecording(9999, 9999, NULL, 0);
1294    } else {
1295#if SK_SUPPORT_GPU
1296        if (kNullGPU_DeviceType != fDeviceType)
1297#endif
1298        {
1299            canvas = this->INHERITED::beforeChildren(canvas);
1300        }
1301    }
1302
1303    if (fUseClip) {
1304        canvas->drawColor(0xFFFF88FF);
1305        canvas->clipPath(fClipPath, SkRegion::kIntersect_Op, true);
1306    }
1307
1308    return canvas;
1309}
1310
1311static void paint_rgn(const SkBitmap& bm, const SkIRect& r,
1312                      const SkRegion& rgn) {
1313    SkCanvas    canvas(bm);
1314    SkRegion    inval(rgn);
1315
1316    inval.translate(r.fLeft, r.fTop);
1317    canvas.clipRegion(inval);
1318    canvas.drawColor(0xFFFF8080);
1319}
1320#include "SkData.h"
1321void SampleWindow::afterChildren(SkCanvas* orig) {
1322    if (fSaveToPdf) {
1323        fSaveToPdf = false;
1324        if (fShowZoomer) {
1325            showZoomer(fPdfCanvas);
1326        }
1327        SkString name;
1328        name.printf("%s.pdf", this->getTitle());
1329        SkPDFDocument doc;
1330        SkPDFDevice* device = static_cast<SkPDFDevice*>(fPdfCanvas->getDevice());
1331        doc.appendPage(device);
1332#ifdef SK_BUILD_FOR_ANDROID
1333        name.prepend("/sdcard/");
1334#endif
1335
1336#ifdef SK_BUILD_FOR_IOS
1337        SkDynamicMemoryWStream mstream;
1338        doc.emitPDF(&mstream);
1339        fPDFData = mstream.copyToData();
1340#endif
1341        SkFILEWStream stream(name.c_str());
1342        if (stream.isValid()) {
1343            doc.emitPDF(&stream);
1344            const char* desc = "File saved from Skia SampleApp";
1345            this->onPDFSaved(this->getTitle(), desc, name.c_str());
1346        }
1347
1348        delete fPdfCanvas;
1349        fPdfCanvas = NULL;
1350
1351        // We took over the draw calls in order to create the PDF, so we need
1352        // to redraw.
1353        this->inval(NULL);
1354        return;
1355    }
1356
1357    if (fRequestGrabImage) {
1358        fRequestGrabImage = false;
1359
1360        SkBaseDevice* device = orig->getDevice();
1361        SkBitmap bmp;
1362        if (device->accessBitmap(false).copyTo(&bmp, kN32_SkColorType)) {
1363            static int gSampleGrabCounter;
1364            SkString name;
1365            name.printf("sample_grab_%d.png", gSampleGrabCounter++);
1366            SkImageEncoder::EncodeFile(name.c_str(), bmp,
1367                                       SkImageEncoder::kPNG_Type, 100);
1368        }
1369    }
1370
1371    if (kPicture_DeviceType == fDeviceType) {
1372        SkAutoTUnref<SkPicture> picture(fRecorder.endRecording());
1373
1374        if (true) {
1375            SkPicture* pict = new SkPicture(*picture);
1376            this->installDrawFilter(orig);
1377            orig->drawPicture(pict);
1378            pict->unref();
1379        } else if (true) {
1380            SkDynamicMemoryWStream ostream;
1381            picture->serialize(&ostream);
1382
1383            SkAutoDataUnref data(ostream.copyToData());
1384            SkMemoryStream istream(data->data(), data->size());
1385            SkAutoTUnref<SkPicture> pict(SkPicture::CreateFromStream(&istream));
1386            if (pict.get() != NULL) {
1387                orig->drawPicture(pict.get());
1388            }
1389        } else {
1390            picture->draw(orig);
1391        }
1392    }
1393
1394    // Do this after presentGL and other finishing, rather than in afterChild
1395    if (fMeasureFPS && fMeasureFPS_StartTime) {
1396        fMeasureFPS_Time += SkTime::GetMSecs() - fMeasureFPS_StartTime;
1397    }
1398
1399    //    if ((fScrollTestX | fScrollTestY) != 0)
1400    if (false) {
1401        const SkBitmap& bm = orig->getDevice()->accessBitmap(true);
1402        int dx = fScrollTestX * 7;
1403        int dy = fScrollTestY * 7;
1404        SkIRect r;
1405        SkRegion inval;
1406
1407        r.set(50, 50, 50+100, 50+100);
1408        bm.scrollRect(&r, dx, dy, &inval);
1409        paint_rgn(bm, r, inval);
1410    }
1411}
1412
1413void SampleWindow::beforeChild(SkView* child, SkCanvas* canvas) {
1414    if (fRotate) {
1415        fRotateAnimTime += SampleCode::GetAnimSecondsDelta();
1416
1417        SkScalar cx = this->width() / 2;
1418        SkScalar cy = this->height() / 2;
1419        canvas->translate(cx, cy);
1420        canvas->rotate(fRotateAnimTime * 10);
1421        canvas->translate(-cx, -cy);
1422    }
1423
1424    if (fPerspAnim) {
1425        fPerspAnimTime += SampleCode::GetAnimSecondsDelta();
1426
1427        static const SkScalar gAnimPeriod = 10 * SK_Scalar1;
1428        static const SkScalar gAnimMag = SK_Scalar1 / 1000;
1429        SkScalar t = SkScalarMod(fPerspAnimTime, gAnimPeriod);
1430        if (SkScalarFloorToInt(SkScalarDiv(fPerspAnimTime, gAnimPeriod)) & 0x1) {
1431            t = gAnimPeriod - t;
1432        }
1433        t = 2 * t - gAnimPeriod;
1434        t = SkScalarMul(SkScalarDiv(t, gAnimPeriod), gAnimMag);
1435        SkMatrix m;
1436        m.reset();
1437        m.setPerspY(t);
1438        canvas->concat(m);
1439    }
1440
1441    this->installDrawFilter(canvas);
1442
1443    if (fMeasureFPS) {
1444        if (SampleView::SetRepeatDraw(child, FPS_REPEAT_COUNT)) {
1445            fMeasureFPS_StartTime = SkTime::GetMSecs();
1446        }
1447    } else {
1448        (void)SampleView::SetRepeatDraw(child, 1);
1449    }
1450    if (fPerspAnim || fRotate) {
1451        this->inval(NULL);
1452    }
1453}
1454
1455void SampleWindow::afterChild(SkView* child, SkCanvas* canvas) {
1456    canvas->setDrawFilter(NULL);
1457}
1458
1459static SkColorType gColorTypeCycle[] = {
1460    kUnknown_SkColorType,           // none -> none
1461    kUnknown_SkColorType,           // a8 -> none
1462    kN32_SkColorType,               // 565 -> 8888
1463    kN32_SkColorType,               // 4444 -> 8888
1464    kRGB_565_SkColorType,           // 8888 -> 565
1465    kRGB_565_SkColorType,           // 8888 -> 565
1466    kUnknown_SkColorType,           // index8 -> none
1467};
1468
1469static SkColorType cycle_colortypes(SkColorType c) {
1470    return gColorTypeCycle[c];
1471}
1472
1473void SampleWindow::changeZoomLevel(float delta) {
1474    fZoomLevel += delta;
1475    if (fZoomLevel > 0) {
1476        fZoomLevel = SkMinScalar(fZoomLevel, MAX_ZOOM_LEVEL);
1477        fZoomScale = fZoomLevel + SK_Scalar1;
1478    } else if (fZoomLevel < 0) {
1479        fZoomLevel = SkMaxScalar(fZoomLevel, MIN_ZOOM_LEVEL);
1480        fZoomScale = SK_Scalar1 / (SK_Scalar1 - fZoomLevel);
1481    } else {
1482        fZoomScale = SK_Scalar1;
1483    }
1484    this->updateMatrix();
1485}
1486
1487void SampleWindow::updateMatrix(){
1488    SkMatrix m;
1489    m.reset();
1490    if (fZoomLevel) {
1491        SkPoint center;
1492        //m = this->getLocalMatrix();//.invert(&m);
1493        m.mapXY(fZoomCenterX, fZoomCenterY, &center);
1494        SkScalar cx = center.fX;
1495        SkScalar cy = center.fY;
1496
1497        m.setTranslate(-cx, -cy);
1498        m.postScale(fZoomScale, fZoomScale);
1499        m.postTranslate(cx, cy);
1500    }
1501
1502    if (fFlipAxis) {
1503        m.preTranslate(fZoomCenterX, fZoomCenterY);
1504        if (fFlipAxis & kFlipAxis_X) {
1505            m.preScale(-SK_Scalar1, SK_Scalar1);
1506        }
1507        if (fFlipAxis & kFlipAxis_Y) {
1508            m.preScale(SK_Scalar1, -SK_Scalar1);
1509        }
1510        m.preTranslate(-fZoomCenterX, -fZoomCenterY);
1511        //canvas->concat(m);
1512    }
1513    // Apply any gesture matrix
1514    m.preConcat(fGesture.localM());
1515    m.preConcat(fGesture.globalM());
1516
1517    this->setLocalMatrix(m);
1518
1519    this->updateTitle();
1520    this->inval(NULL);
1521}
1522bool SampleWindow::previousSample() {
1523    fCurrIndex = (fCurrIndex - 1 + fSamples.count()) % fSamples.count();
1524    this->loadView(create_transition(curr_view(this), (*fSamples[fCurrIndex])(),
1525                                     fTransitionPrev));
1526    return true;
1527}
1528
1529bool SampleWindow::nextSample() {
1530    fCurrIndex = (fCurrIndex + 1) % fSamples.count();
1531    this->loadView(create_transition(curr_view(this), (*fSamples[fCurrIndex])(),
1532                                     fTransitionNext));
1533    return true;
1534}
1535
1536bool SampleWindow::goToSample(int i) {
1537    fCurrIndex = (i) % fSamples.count();
1538    this->loadView(create_transition(curr_view(this),(*fSamples[fCurrIndex])(), 6));
1539    return true;
1540}
1541
1542SkString SampleWindow::getSampleTitle(int i) {
1543    return ::getSampleTitle(fSamples[i]);
1544}
1545
1546int SampleWindow::sampleCount() {
1547    return fSamples.count();
1548}
1549
1550void SampleWindow::showOverview() {
1551    this->loadView(create_transition(curr_view(this),
1552                                     create_overview(fSamples.count(), fSamples.begin()),
1553                                     4));
1554}
1555
1556void SampleWindow::installDrawFilter(SkCanvas* canvas) {
1557    canvas->setDrawFilter(new FlagsDrawFilter(fLCDState, fAAState, fSubpixelState,
1558                                              fHintingState, fFilterLevelIndex))->unref();
1559}
1560
1561void SampleWindow::postAnimatingEvent() {
1562    if (fAnimating) {
1563        (new SkEvent(ANIMATING_EVENTTYPE, this->getSinkID()))->postDelay(ANIMATING_DELAY);
1564    }
1565}
1566
1567bool SampleWindow::onEvent(const SkEvent& evt) {
1568    if (evt.isType(gUpdateWindowTitleEvtName)) {
1569        this->updateTitle();
1570        return true;
1571    }
1572    if (evt.isType(ANIMATING_EVENTTYPE)) {
1573        if (fAnimating) {
1574            this->nextSample();
1575            this->postAnimatingEvent();
1576        }
1577        return true;
1578    }
1579    if (evt.isType("replace-transition-view")) {
1580        this->loadView((SkView*)SkEventSink::FindSink(evt.getFast32()));
1581        return true;
1582    }
1583    if (evt.isType("set-curr-index")) {
1584        this->goToSample(evt.getFast32());
1585        return true;
1586    }
1587    if (isInvalEvent(evt)) {
1588        this->inval(NULL);
1589        return true;
1590    }
1591    int selected = -1;
1592    if (SkOSMenu::FindListIndex(evt, "Device Type", &selected)) {
1593        this->setDeviceType((DeviceType)selected);
1594        return true;
1595    }
1596    if (SkOSMenu::FindTriState(evt, "Pipe", &fPipeState)) {
1597#ifdef PIPE_NET
1598        if (!fPipeState != SkOSMenu::kOnState)
1599            gServer.disconnectAll();
1600#endif
1601        (void)SampleView::SetUsePipe(curr_view(this), fPipeState);
1602        this->updateTitle();
1603        this->inval(NULL);
1604        return true;
1605    }
1606    if (SkOSMenu::FindSwitchState(evt, "Slide Show", NULL)) {
1607        this->toggleSlideshow();
1608        return true;
1609    }
1610    if (SkOSMenu::FindTriState(evt, "AA", &fAAState) ||
1611        SkOSMenu::FindTriState(evt, "LCD", &fLCDState) ||
1612        SkOSMenu::FindListIndex(evt, "FilterLevel", &fFilterLevelIndex) ||
1613        SkOSMenu::FindTriState(evt, "Subpixel", &fSubpixelState) ||
1614        SkOSMenu::FindListIndex(evt, "Hinting", &fHintingState) ||
1615        SkOSMenu::FindSwitchState(evt, "Clip", &fUseClip) ||
1616        SkOSMenu::FindSwitchState(evt, "Zoomer", &fShowZoomer) ||
1617        SkOSMenu::FindSwitchState(evt, "Magnify", &fMagnify) ||
1618        SkOSMenu::FindListIndex(evt, "Transition-Next", &fTransitionNext) ||
1619        SkOSMenu::FindListIndex(evt, "Transition-Prev", &fTransitionPrev)) {
1620        this->inval(NULL);
1621        this->updateTitle();
1622        return true;
1623    }
1624    if (SkOSMenu::FindListIndex(evt, "Tiling", &fTilingMode)) {
1625        if (SampleView::IsSampleView(curr_view(this))) {
1626            ((SampleView*)curr_view(this))->onTileSizeChanged(this->tileSize());
1627        }
1628        this->inval(NULL);
1629        this->updateTitle();
1630        return true;
1631    }
1632    if (SkOSMenu::FindSwitchState(evt, "Flip X", NULL)) {
1633        fFlipAxis ^= kFlipAxis_X;
1634        this->updateMatrix();
1635        return true;
1636    }
1637    if (SkOSMenu::FindSwitchState(evt, "Flip Y", NULL)) {
1638        fFlipAxis ^= kFlipAxis_Y;
1639        this->updateMatrix();
1640        return true;
1641    }
1642    if (SkOSMenu::FindAction(evt,"Save to PDF")) {
1643        this->saveToPdf();
1644        return true;
1645    }
1646    return this->INHERITED::onEvent(evt);
1647}
1648
1649bool SampleWindow::onQuery(SkEvent* query) {
1650    if (query->isType("get-slide-count")) {
1651        query->setFast32(fSamples.count());
1652        return true;
1653    }
1654    if (query->isType("get-slide-title")) {
1655        SkView* view = (*fSamples[query->getFast32()])();
1656        SkEvent evt(gTitleEvtName);
1657        if (view->doQuery(&evt)) {
1658            query->setString("title", evt.findString(gTitleEvtName));
1659        }
1660        SkSafeUnref(view);
1661        return true;
1662    }
1663    if (query->isType("use-fast-text")) {
1664        SkEvent evt(gFastTextEvtName);
1665        return curr_view(this)->doQuery(&evt);
1666    }
1667    if (query->isType("ignore-window-bitmap")) {
1668        query->setFast32(this->getGrContext() != NULL);
1669        return true;
1670    }
1671    return this->INHERITED::onQuery(query);
1672}
1673
1674#if 0 // UNUSED
1675static void cleanup_for_filename(SkString* name) {
1676    char* str = name->writable_str();
1677    for (size_t i = 0; i < name->size(); i++) {
1678        switch (str[i]) {
1679            case ':': str[i] = '-'; break;
1680            case '/': str[i] = '-'; break;
1681            case ' ': str[i] = '_'; break;
1682            default: break;
1683        }
1684    }
1685}
1686#endif
1687
1688bool SampleWindow::onHandleChar(SkUnichar uni) {
1689    {
1690        SkView* view = curr_view(this);
1691        if (view) {
1692            SkEvent evt(gCharEvtName);
1693            evt.setFast32(uni);
1694            if (view->doQuery(&evt)) {
1695                return true;
1696            }
1697        }
1698    }
1699
1700    int dx = 0xFF;
1701    int dy = 0xFF;
1702
1703    switch (uni) {
1704        case '5': dx =  0; dy =  0; break;
1705        case '8': dx =  0; dy = -1; break;
1706        case '6': dx =  1; dy =  0; break;
1707        case '2': dx =  0; dy =  1; break;
1708        case '4': dx = -1; dy =  0; break;
1709        case '7': dx = -1; dy = -1; break;
1710        case '9': dx =  1; dy = -1; break;
1711        case '3': dx =  1; dy =  1; break;
1712        case '1': dx = -1; dy =  1; break;
1713
1714        default:
1715            break;
1716    }
1717
1718    if (0xFF != dx && 0xFF != dy) {
1719        if ((dx | dy) == 0) {
1720            fScrollTestX = fScrollTestY = 0;
1721        } else {
1722            fScrollTestX += dx;
1723            fScrollTestY += dy;
1724        }
1725        this->inval(NULL);
1726        return true;
1727    }
1728
1729    switch (uni) {
1730        case 'B':
1731            post_event_to_sink(SkNEW_ARGS(SkEvent, ("PictFileView::toggleBBox")), curr_view(this));
1732            // Cannot call updateTitle() synchronously, because the toggleBBox event is still in
1733            // the queue.
1734            post_event_to_sink(SkNEW_ARGS(SkEvent, (gUpdateWindowTitleEvtName)), this);
1735            this->inval(NULL);
1736            break;
1737        case 'f':
1738            // only
1739            toggleFPS();
1740            break;
1741        case 'g':
1742            fRequestGrabImage = true;
1743            this->inval(NULL);
1744            break;
1745        case 'G':
1746            gShowGMBounds = !gShowGMBounds;
1747            post_event_to_sink(GMSampleView::NewShowSizeEvt(gShowGMBounds),
1748                            curr_view(this));
1749            this->inval(NULL);
1750            break;
1751        case 'i':
1752            this->zoomIn();
1753            break;
1754        case 'o':
1755            this->zoomOut();
1756            break;
1757        case 'r':
1758            fRotate = !fRotate;
1759            fRotateAnimTime = 0;
1760            this->inval(NULL);
1761            this->updateTitle();
1762            return true;
1763        case 'k':
1764            fPerspAnim = !fPerspAnim;
1765            this->inval(NULL);
1766            this->updateTitle();
1767            return true;
1768#if SK_SUPPORT_GPU
1769        case '\\':
1770            this->setDeviceType(kNullGPU_DeviceType);
1771            this->inval(NULL);
1772            this->updateTitle();
1773            return true;
1774        case 'p':
1775            {
1776                GrContext* grContext = this->getGrContext();
1777                if (grContext) {
1778                    size_t cacheBytes;
1779                    grContext->getResourceCacheUsage(NULL, &cacheBytes);
1780                    grContext->freeGpuResources();
1781                    SkDebugf("Purged %d bytes from the GPU resource cache.\n", cacheBytes);
1782                }
1783            }
1784            return true;
1785#endif
1786        default:
1787            break;
1788    }
1789
1790    if (fAppMenu->handleKeyEquivalent(uni)|| fSlideMenu->handleKeyEquivalent(uni)) {
1791        this->onUpdateMenu(fAppMenu);
1792        this->onUpdateMenu(fSlideMenu);
1793        return true;
1794    }
1795    return this->INHERITED::onHandleChar(uni);
1796}
1797
1798void SampleWindow::setDeviceType(DeviceType type) {
1799    if (type == fDeviceType)
1800        return;
1801
1802    fDevManager->tearDownBackend(this);
1803
1804    fDeviceType = type;
1805
1806    fDevManager->setUpBackend(this, fMSAASampleCount);
1807
1808    this->updateTitle();
1809    this->inval(NULL);
1810}
1811
1812void SampleWindow::toggleSlideshow() {
1813    fAnimating = !fAnimating;
1814    this->postAnimatingEvent();
1815    this->updateTitle();
1816}
1817
1818void SampleWindow::toggleRendering() {
1819    this->setDeviceType(cycle_devicetype(fDeviceType));
1820    this->updateTitle();
1821    this->inval(NULL);
1822}
1823
1824void SampleWindow::toggleFPS() {
1825    fMeasureFPS = !fMeasureFPS;
1826    this->updateTitle();
1827    this->inval(NULL);
1828}
1829
1830#include "SkDumpCanvas.h"
1831
1832bool SampleWindow::onHandleKey(SkKey key) {
1833    {
1834        SkView* view = curr_view(this);
1835        if (view) {
1836            SkEvent evt(gKeyEvtName);
1837            evt.setFast32(key);
1838            if (view->doQuery(&evt)) {
1839                return true;
1840            }
1841        }
1842    }
1843    switch (key) {
1844        case kRight_SkKey:
1845            if (this->nextSample()) {
1846                return true;
1847            }
1848            break;
1849        case kLeft_SkKey:
1850            if (this->previousSample()) {
1851                return true;
1852            }
1853            return true;
1854        case kUp_SkKey:
1855            if (USE_ARROWS_FOR_ZOOM) {
1856                this->changeZoomLevel(1.f / 32.f);
1857            } else {
1858                fNClip = !fNClip;
1859                this->inval(NULL);
1860                this->updateTitle();
1861            }
1862            return true;
1863        case kDown_SkKey:
1864            if (USE_ARROWS_FOR_ZOOM) {
1865                this->changeZoomLevel(-1.f / 32.f);
1866            } else {
1867                this->setColorType(cycle_colortypes(this->getBitmap().colorType()));
1868                this->updateTitle();
1869            }
1870            return true;
1871        case kOK_SkKey: {
1872            SkString title;
1873            if (curr_title(this, &title)) {
1874                writeTitleToPrefs(title.c_str());
1875            }
1876            return true;
1877        }
1878        case kBack_SkKey:
1879            this->showOverview();
1880            return true;
1881        default:
1882            break;
1883    }
1884    return this->INHERITED::onHandleKey(key);
1885}
1886
1887///////////////////////////////////////////////////////////////////////////////
1888
1889static const char gGestureClickType[] = "GestureClickType";
1890
1891bool SampleWindow::onDispatchClick(int x, int y, Click::State state,
1892        void* owner, unsigned modi) {
1893    if (Click::kMoved_State == state) {
1894        updatePointer(x, y);
1895    }
1896    int w = SkScalarRoundToInt(this->width());
1897    int h = SkScalarRoundToInt(this->height());
1898
1899    // check for the resize-box
1900    if (w - x < 16 && h - y < 16) {
1901        return false;   // let the OS handle the click
1902    }
1903    else if (fMagnify) {
1904        //it's only necessary to update the drawing if there's a click
1905        this->inval(NULL);
1906        return false; //prevent dragging while magnify is enabled
1907    } else {
1908        // capture control+option, and trigger debugger
1909        if ((modi & kControl_SkModifierKey) && (modi & kOption_SkModifierKey)) {
1910            if (Click::kDown_State == state) {
1911                SkEvent evt("debug-hit-test");
1912                evt.setS32("debug-hit-test-x", x);
1913                evt.setS32("debug-hit-test-y", y);
1914                curr_view(this)->doEvent(evt);
1915            }
1916            return true;
1917        } else {
1918            return this->INHERITED::onDispatchClick(x, y, state, owner, modi);
1919        }
1920    }
1921}
1922
1923class GestureClick : public SkView::Click {
1924public:
1925    GestureClick(SkView* target) : SkView::Click(target) {
1926        this->setType(gGestureClickType);
1927    }
1928
1929    static bool IsGesture(Click* click) {
1930        return click->isType(gGestureClickType);
1931    }
1932};
1933
1934SkView::Click* SampleWindow::onFindClickHandler(SkScalar x, SkScalar y,
1935                                                unsigned modi) {
1936    return new GestureClick(this);
1937}
1938
1939bool SampleWindow::onClick(Click* click) {
1940    if (GestureClick::IsGesture(click)) {
1941        float x = static_cast<float>(click->fICurr.fX);
1942        float y = static_cast<float>(click->fICurr.fY);
1943
1944        switch (click->fState) {
1945            case SkView::Click::kDown_State:
1946                fGesture.touchBegin(click->fOwner, x, y);
1947                break;
1948            case SkView::Click::kMoved_State:
1949                fGesture.touchMoved(click->fOwner, x, y);
1950                this->updateMatrix();
1951                break;
1952            case SkView::Click::kUp_State:
1953                fGesture.touchEnd(click->fOwner);
1954                this->updateMatrix();
1955                break;
1956        }
1957        return true;
1958    }
1959    return false;
1960}
1961
1962///////////////////////////////////////////////////////////////////////////////
1963
1964void SampleWindow::loadView(SkView* view) {
1965    SkView::F2BIter iter(this);
1966    SkView* prev = iter.next();
1967    if (prev) {
1968        prev->detachFromParent();
1969    }
1970
1971    view->setVisibleP(true);
1972    view->setClipToBounds(false);
1973    this->attachChildToFront(view)->unref();
1974    view->setSize(this->width(), this->height());
1975
1976    //repopulate the slide menu when a view is loaded
1977    fSlideMenu->reset();
1978
1979    (void)SampleView::SetUsePipe(view, fPipeState);
1980    if (SampleView::IsSampleView(view)) {
1981        SampleView* sampleView = (SampleView*)view;
1982        sampleView->requestMenu(fSlideMenu);
1983        sampleView->onTileSizeChanged(this->tileSize());
1984    }
1985    this->onUpdateMenu(fSlideMenu);
1986    this->updateTitle();
1987}
1988
1989static const char* gDeviceTypePrefix[] = {
1990    "raster: ",
1991    "picture: ",
1992#if SK_SUPPORT_GPU
1993    "opengl: ",
1994#if SK_ANGLE
1995    "angle: ",
1996#endif // SK_ANGLE
1997    "null-gl: "
1998#endif // SK_SUPPORT_GPU
1999};
2000SK_COMPILE_ASSERT(SK_ARRAY_COUNT(gDeviceTypePrefix) == SampleWindow::kDeviceTypeCnt,
2001                  array_size_mismatch);
2002
2003static const char* trystate_str(SkOSMenu::TriState state,
2004                                const char trueStr[], const char falseStr[]) {
2005    if (SkOSMenu::kOnState == state) {
2006        return trueStr;
2007    } else if (SkOSMenu::kOffState == state) {
2008        return falseStr;
2009    }
2010    return NULL;
2011}
2012
2013void SampleWindow::updateTitle() {
2014    SkView* view = curr_view(this);
2015
2016    SkString title;
2017    if (!curr_title(this, &title)) {
2018        title.set("<unknown>");
2019    }
2020
2021    title.prepend(gDeviceTypePrefix[fDeviceType]);
2022
2023    title.prepend(" ");
2024    title.prepend(sk_tool_utils::colortype_name(this->getBitmap().colorType()));
2025
2026    if (fTilingMode != kNo_Tiling) {
2027        title.prependf("<T: %s> ", gTilingInfo[fTilingMode].label);
2028    }
2029    if (fAnimating) {
2030        title.prepend("<A> ");
2031    }
2032    if (fRotate) {
2033        title.prepend("<R> ");
2034    }
2035    if (fNClip) {
2036        title.prepend("<C> ");
2037    }
2038    if (fPerspAnim) {
2039        title.prepend("<K> ");
2040    }
2041
2042    title.prepend(trystate_str(fLCDState, "LCD ", "lcd "));
2043    title.prepend(trystate_str(fAAState, "AA ", "aa "));
2044    title.prepend(gFilterLevelStates[fFilterLevelIndex].fLabel);
2045    title.prepend(trystate_str(fSubpixelState, "S ", "s "));
2046    title.prepend(fFlipAxis & kFlipAxis_X ? "X " : NULL);
2047    title.prepend(fFlipAxis & kFlipAxis_Y ? "Y " : NULL);
2048    title.prepend(gHintingStates[fHintingState].label);
2049
2050    if (fZoomLevel) {
2051        title.prependf("{%.2f} ", SkScalarToFloat(fZoomLevel));
2052    }
2053
2054    if (fMeasureFPS) {
2055        title.appendf(" %8.3f ms", fMeasureFPS_Time / (float)FPS_REPEAT_COUNT);
2056    }
2057    if (SampleView::IsSampleView(view)) {
2058        switch (fPipeState) {
2059            case SkOSMenu::kOnState:
2060                title.prepend("<Pipe> ");
2061                break;
2062            case SkOSMenu::kMixedState:
2063                title.prepend("<Tiled Pipe> ");
2064                break;
2065
2066            default:
2067                break;
2068        }
2069        title.prepend("! ");
2070    }
2071
2072#if SK_SUPPORT_GPU
2073    if (IsGpuDeviceType(fDeviceType) &&
2074        NULL != fDevManager &&
2075        fDevManager->getGrRenderTarget() &&
2076        fDevManager->getGrRenderTarget()->numSamples() > 0) {
2077        title.appendf(" [MSAA: %d]",
2078                       fDevManager->getGrRenderTarget()->numSamples());
2079    }
2080#endif
2081
2082    this->setTitle(title.c_str());
2083}
2084
2085void SampleWindow::onSizeChange() {
2086    this->INHERITED::onSizeChange();
2087
2088    SkView::F2BIter iter(this);
2089    SkView* view = iter.next();
2090    view->setSize(this->width(), this->height());
2091
2092    // rebuild our clippath
2093    {
2094        const SkScalar W = this->width();
2095        const SkScalar H = this->height();
2096
2097        fClipPath.reset();
2098#if 0
2099        for (SkScalar y = SK_Scalar1; y < H; y += SkIntToScalar(32)) {
2100            SkRect r;
2101            r.set(SK_Scalar1, y, SkIntToScalar(30), y + SkIntToScalar(30));
2102            for (; r.fLeft < W; r.offset(SkIntToScalar(32), 0))
2103                fClipPath.addRect(r);
2104        }
2105#else
2106        SkRect r;
2107        r.set(0, 0, W, H);
2108        fClipPath.addRect(r, SkPath::kCCW_Direction);
2109        r.set(W/4, H/4, W*3/4, H*3/4);
2110        fClipPath.addRect(r, SkPath::kCW_Direction);
2111#endif
2112    }
2113
2114    fZoomCenterX = SkScalarHalf(this->width());
2115    fZoomCenterY = SkScalarHalf(this->height());
2116
2117#ifdef SK_BUILD_FOR_ANDROID
2118    // FIXME: The first draw after a size change does not work on Android, so
2119    // we post an invalidate.
2120    this->postInvalDelay();
2121#endif
2122    this->updateTitle();    // to refresh our config
2123    fDevManager->windowSizeChanged(this);
2124
2125    if (fTilingMode != kNo_Tiling && SampleView::IsSampleView(view)) {
2126        ((SampleView*)view)->onTileSizeChanged(this->tileSize());
2127    }
2128}
2129
2130///////////////////////////////////////////////////////////////////////////////
2131
2132static const char is_sample_view_tag[] = "sample-is-sample-view";
2133static const char repeat_count_tag[] = "sample-set-repeat-count";
2134static const char set_use_pipe_tag[] = "sample-set-use-pipe";
2135
2136bool SampleView::IsSampleView(SkView* view) {
2137    SkEvent evt(is_sample_view_tag);
2138    return view->doQuery(&evt);
2139}
2140
2141bool SampleView::SetRepeatDraw(SkView* view, int count) {
2142    SkEvent evt(repeat_count_tag);
2143    evt.setFast32(count);
2144    return view->doEvent(evt);
2145}
2146
2147bool SampleView::SetUsePipe(SkView* view, SkOSMenu::TriState state) {
2148    SkEvent evt;
2149    evt.setS32(set_use_pipe_tag, state);
2150    return view->doEvent(evt);
2151}
2152
2153bool SampleView::onEvent(const SkEvent& evt) {
2154    if (evt.isType(repeat_count_tag)) {
2155        fRepeatCount = evt.getFast32();
2156        return true;
2157    }
2158
2159    int32_t pipeHolder;
2160    if (evt.findS32(set_use_pipe_tag, &pipeHolder)) {
2161        fPipeState = static_cast<SkOSMenu::TriState>(pipeHolder);
2162        return true;
2163    }
2164
2165    return this->INHERITED::onEvent(evt);
2166}
2167
2168bool SampleView::onQuery(SkEvent* evt) {
2169    if (evt->isType(is_sample_view_tag)) {
2170        return true;
2171    }
2172    return this->INHERITED::onQuery(evt);
2173}
2174
2175
2176class SimplePC : public SkGPipeController {
2177public:
2178    SimplePC(SkCanvas* target);
2179    ~SimplePC();
2180
2181    virtual void* requestBlock(size_t minRequest, size_t* actual);
2182    virtual void notifyWritten(size_t bytes);
2183
2184private:
2185    SkGPipeReader   fReader;
2186    void*           fBlock;
2187    size_t          fBlockSize;
2188    size_t          fBytesWritten;
2189    int             fAtomsWritten;
2190    SkGPipeReader::Status   fStatus;
2191
2192    size_t        fTotalWritten;
2193};
2194
2195SimplePC::SimplePC(SkCanvas* target) : fReader(target) {
2196    fBlock = NULL;
2197    fBlockSize = fBytesWritten = 0;
2198    fStatus = SkGPipeReader::kDone_Status;
2199    fTotalWritten = 0;
2200    fAtomsWritten = 0;
2201    fReader.setBitmapDecoder(&SkImageDecoder::DecodeMemory);
2202}
2203
2204SimplePC::~SimplePC() {
2205//    SkASSERT(SkGPipeReader::kDone_Status == fStatus);
2206    if (fTotalWritten) {
2207        SkDebugf("--- %d bytes %d atoms, status %d\n", fTotalWritten,
2208                 fAtomsWritten, fStatus);
2209#ifdef  PIPE_FILE
2210        //File is open in append mode
2211        FILE* f = fopen(FILE_PATH, "ab");
2212        SkASSERT(f != NULL);
2213        fwrite((const char*)fBlock + fBytesWritten, 1, bytes, f);
2214        fclose(f);
2215#endif
2216#ifdef PIPE_NET
2217        if (fAtomsWritten > 1 && fTotalWritten > 4) { //ignore done
2218            gServer.acceptConnections();
2219            gServer.writePacket(fBlock, fTotalWritten);
2220        }
2221#endif
2222    }
2223    sk_free(fBlock);
2224}
2225
2226void* SimplePC::requestBlock(size_t minRequest, size_t* actual) {
2227    sk_free(fBlock);
2228
2229    fBlockSize = minRequest * 4;
2230    fBlock = sk_malloc_throw(fBlockSize);
2231    fBytesWritten = 0;
2232    *actual = fBlockSize;
2233    return fBlock;
2234}
2235
2236void SimplePC::notifyWritten(size_t bytes) {
2237    SkASSERT(fBytesWritten + bytes <= fBlockSize);
2238    fStatus = fReader.playback((const char*)fBlock + fBytesWritten, bytes);
2239    SkASSERT(SkGPipeReader::kError_Status != fStatus);
2240    fBytesWritten += bytes;
2241    fTotalWritten += bytes;
2242
2243    fAtomsWritten += 1;
2244}
2245
2246void SampleView::draw(SkCanvas* canvas) {
2247    if (SkOSMenu::kOffState == fPipeState) {
2248        this->INHERITED::draw(canvas);
2249    } else {
2250        SkGPipeWriter writer;
2251        SimplePC controller(canvas);
2252        TiledPipeController tc(canvas->getDevice()->accessBitmap(false),
2253                               &SkImageDecoder::DecodeMemory,
2254                               &canvas->getTotalMatrix());
2255        SkGPipeController* pc;
2256        if (SkOSMenu::kMixedState == fPipeState) {
2257            pc = &tc;
2258        } else {
2259            pc = &controller;
2260        }
2261        uint32_t flags = SkGPipeWriter::kCrossProcess_Flag;
2262
2263        canvas = writer.startRecording(pc, flags);
2264        //Must draw before controller goes out of scope and sends data
2265        this->INHERITED::draw(canvas);
2266        //explicitly end recording to ensure writer is flushed before the memory
2267        //is freed in the deconstructor of the controller
2268        writer.endRecording();
2269    }
2270}
2271
2272void SampleView::onDraw(SkCanvas* canvas) {
2273    this->onDrawBackground(canvas);
2274
2275    for (int i = 0; i < fRepeatCount; i++) {
2276        SkAutoCanvasRestore acr(canvas, true);
2277        this->onDrawContent(canvas);
2278    }
2279}
2280
2281void SampleView::onDrawBackground(SkCanvas* canvas) {
2282    canvas->drawColor(fBGColor);
2283}
2284
2285///////////////////////////////////////////////////////////////////////////////
2286
2287template <typename T> void SkTBSort(T array[], int count) {
2288    for (int i = 1; i < count - 1; i++) {
2289        bool didSwap = false;
2290        for (int j = count - 1; j > i; --j) {
2291            if (array[j] < array[j-1]) {
2292                T tmp(array[j-1]);
2293                array[j-1] = array[j];
2294                array[j] = tmp;
2295                didSwap = true;
2296            }
2297        }
2298        if (!didSwap) {
2299            break;
2300        }
2301    }
2302
2303    for (int k = 0; k < count - 1; k++) {
2304        SkASSERT(!(array[k+1] < array[k]));
2305    }
2306}
2307
2308#include "SkRandom.h"
2309
2310static void rand_rect(SkIRect* rect, SkRandom& rand) {
2311    int bits = 8;
2312    int shift = 32 - bits;
2313    rect->set(rand.nextU() >> shift, rand.nextU() >> shift,
2314              rand.nextU() >> shift, rand.nextU() >> shift);
2315    rect->sort();
2316}
2317
2318static void dumpRect(const SkIRect& r) {
2319    SkDebugf(" { %d, %d, %d, %d },\n",
2320             r.fLeft, r.fTop,
2321             r.fRight, r.fBottom);
2322}
2323
2324static void test_rects(const SkIRect rect[], int count) {
2325    SkRegion rgn0, rgn1;
2326
2327    for (int i = 0; i < count; i++) {
2328        rgn0.op(rect[i], SkRegion::kUnion_Op);
2329     //   dumpRect(rect[i]);
2330    }
2331    rgn1.setRects(rect, count);
2332
2333    if (rgn0 != rgn1) {
2334        SkDebugf("\n");
2335        for (int i = 0; i < count; i++) {
2336            dumpRect(rect[i]);
2337        }
2338        SkDebugf("\n");
2339    }
2340}
2341
2342static void test() {
2343    size_t i;
2344
2345    const SkIRect r0[] = {
2346        { 0, 0, 1, 1 },
2347        { 2, 2, 3, 3 },
2348    };
2349    const SkIRect r1[] = {
2350        { 0, 0, 1, 3 },
2351        { 1, 1, 2, 2 },
2352        { 2, 0, 3, 3 },
2353    };
2354    const SkIRect r2[] = {
2355        { 0, 0, 1, 2 },
2356        { 2, 1, 3, 3 },
2357        { 4, 0, 5, 1 },
2358        { 6, 0, 7, 4 },
2359    };
2360
2361    static const struct {
2362        const SkIRect* fRects;
2363        int            fCount;
2364    } gRecs[] = {
2365        { r0, SK_ARRAY_COUNT(r0) },
2366        { r1, SK_ARRAY_COUNT(r1) },
2367        { r2, SK_ARRAY_COUNT(r2) },
2368    };
2369
2370    for (i = 0; i < SK_ARRAY_COUNT(gRecs); i++) {
2371        test_rects(gRecs[i].fRects, gRecs[i].fCount);
2372    }
2373
2374    SkRandom rand;
2375    for (i = 0; i < 10000; i++) {
2376        SkRegion rgn0, rgn1;
2377
2378        const int N = 8;
2379        SkIRect rect[N];
2380        for (int j = 0; j < N; j++) {
2381            rand_rect(&rect[j], rand);
2382        }
2383        test_rects(rect, N);
2384    }
2385}
2386
2387// FIXME: this should be in a header
2388SkOSWindow* create_sk_window(void* hwnd, int argc, char** argv);
2389SkOSWindow* create_sk_window(void* hwnd, int argc, char** argv) {
2390    if (false) { // avoid bit rot, suppress warning
2391        test();
2392    }
2393    return new SampleWindow(hwnd, argc, argv, NULL);
2394}
2395
2396// FIXME: this should be in a header
2397void get_preferred_size(int* x, int* y, int* width, int* height);
2398void get_preferred_size(int* x, int* y, int* width, int* height) {
2399    *x = 10;
2400    *y = 50;
2401    *width = 640;
2402    *height = 480;
2403}
2404
2405#ifdef SK_BUILD_FOR_IOS
2406void save_args(int argc, char *argv[]) {
2407}
2408#endif
2409
2410// FIXME: this should be in a header
2411void application_init();
2412void application_init() {
2413//    setenv("ANDROID_ROOT", "../../../data", 0);
2414#ifdef SK_BUILD_FOR_MAC
2415    setenv("ANDROID_ROOT", "/android/device/data", 0);
2416#endif
2417    SkGraphics::Init();
2418    SkEvent::Init();
2419}
2420
2421// FIXME: this should be in a header
2422void application_term();
2423void application_term() {
2424    SkEvent::Term();
2425    SkGraphics::Term();
2426}
2427