gm/image.cpp - platform/external/skqp - Gitiles

 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */

 #include "gm.h"
 #include "SkData.h"
 #include "SkCanvas.h"
 #include "SkRandom.h"
 #include "SkStream.h"
 #include "SkSurface.h"

 #if SK_SUPPORT_GPU
 #include "GrContext.h"
 #endif

 static void drawJpeg(SkCanvas* canvas, const SkISize& size) {
     // TODO: Make this draw a file that is checked in, so it can
     // be exercised on machines other than mike's. Will require a
     // rebaseline.
     SkAutoDataUnref data(SkData::NewFromFileName("/Users/mike/Downloads/skia.google.jpeg"));
     if (NULL == data.get()) {
         return;
     }
     SkImage* image = SkImage::NewFromData(data);
     if (image) {
         SkAutoCanvasRestore acr(canvas, true);
         canvas->scale(size.width() * 1.0f / image->width(),
                       size.height() * 1.0f / image->height());
         canvas->drawImage(image, 0, 0, NULL);
         image->unref();
     }
 }

 static void drawContents(SkSurface* surface, SkColor fillC) {
     SkSize size = SkSize::Make(SkIntToScalar(surface->width()),
                                SkIntToScalar(surface->height()));
     SkCanvas* canvas = surface->getCanvas();

     SkScalar stroke = size.fWidth / 10;
     SkScalar radius = (size.fWidth - stroke) / 2;

     SkPaint paint;

     paint.setAntiAlias(true);
     paint.setColor(fillC);
     canvas->drawCircle(size.fWidth/2, size.fHeight/2, radius, paint);

     paint.setStyle(SkPaint::kStroke_Style);
     paint.setStrokeWidth(stroke);
     paint.setColor(SK_ColorBLACK);
     canvas->drawCircle(size.fWidth/2, size.fHeight/2, radius, paint);
 }

 static void test_surface(SkCanvas* canvas, SkSurface* surf, bool usePaint) {
     drawContents(surf, SK_ColorRED);
     SkImage* imgR = surf->newImageSnapshot();

     if (true) {
         SkImage* imgR2 = surf->newImageSnapshot();
         SkASSERT(imgR == imgR2);
         imgR2->unref();
     }

     drawContents(surf, SK_ColorGREEN);
     SkImage* imgG = surf->newImageSnapshot();

     // since we've drawn after we snapped imgR, imgG will be a different obj
     SkASSERT(imgR != imgG);

     drawContents(surf, SK_ColorBLUE);

     SkPaint paint;
 //    paint.setFilterBitmap(true);
 //    paint.setAlpha(0x80);

     canvas->drawImage(imgR, 0, 0, usePaint ? &paint : NULL);
     canvas->drawImage(imgG, 0, 80, usePaint ? &paint : NULL);
     surf->draw(canvas, 0, 160, usePaint ? &paint : NULL);

     SkRect src1, src2, src3;
     src1.iset(0, 0, surf->width(), surf->height());
     src2.iset(-surf->width() / 2, -surf->height() / 2,
              surf->width(), surf->height());
     src3.iset(0, 0, surf->width() / 2, surf->height() / 2);

     SkRect dst1, dst2, dst3, dst4;
     dst1.set(0, 240, 65, 305);
     dst2.set(0, 320, 65, 385);
     dst3.set(0, 400, 65, 465);
     dst4.set(0, 480, 65, 545);

     canvas->drawImageRect(imgR, &src1, dst1, usePaint ? &paint : NULL);
     canvas->drawImageRect(imgG, &src2, dst2, usePaint ? &paint : NULL);
     canvas->drawImageRect(imgR, &src3, dst3, usePaint ? &paint : NULL);
     canvas->drawImageRect(imgG, NULL, dst4, usePaint ? &paint : NULL);

     imgG->unref();
     imgR->unref();
 }

 class ImageGM : public skiagm::GM {
     void*   fBuffer;
     size_t  fBufferSize;
     SkSize  fSize;
     enum {
         W = 64,
         H = 64,
         RB = W * 4 + 8,
     };
 public:
     ImageGM() {
         fBufferSize = RB * H;
         fBuffer = sk_malloc_throw(fBufferSize);
         fSize.set(SkIntToScalar(W), SkIntToScalar(H));
     }

     virtual ~ImageGM() {
         sk_free(fBuffer);
     }

 protected:
     SkString onShortName() SK_OVERRIDE {
         return SkString("image-surface");
     }

     SkISize onISize() SK_OVERRIDE {
         return SkISize::Make(960, 1200);
     }

     void onDraw(SkCanvas* canvas) SK_OVERRIDE {
         drawJpeg(canvas, this->getISize());

         canvas->scale(2, 2);

         static const char* kLabel1 = "Original Img";
         static const char* kLabel2 = "Modified Img";
         static const char* kLabel3 = "Cur Surface";
         static const char* kLabel4 = "Full Crop";
         static const char* kLabel5 = "Over-crop";
         static const char* kLabel6 = "Upper-left";
         static const char* kLabel7 = "No Crop";

         static const char* kLabel8 = "Pre-Alloc Img";
         static const char* kLabel9 = "New Alloc Img";
         static const char* kLabel10 = "GPU";

         SkPaint textPaint;
         textPaint.setAntiAlias(true);
         sk_tool_utils::set_portable_typeface(&textPaint);
         textPaint.setTextSize(8);

         canvas->drawText(kLabel1, strlen(kLabel1), 10,  60, textPaint);
         canvas->drawText(kLabel2, strlen(kLabel2), 10, 140, textPaint);
         canvas->drawText(kLabel3, strlen(kLabel3), 10, 220, textPaint);
         canvas->drawText(kLabel4, strlen(kLabel4), 10, 300, textPaint);
         canvas->drawText(kLabel5, strlen(kLabel5), 10, 380, textPaint);
         canvas->drawText(kLabel6, strlen(kLabel6), 10, 460, textPaint);
         canvas->drawText(kLabel7, strlen(kLabel7), 10, 540, textPaint);

         canvas->drawText(kLabel8, strlen(kLabel8),  80, 10, textPaint);
         canvas->drawText(kLabel9, strlen(kLabel9), 160, 10, textPaint);
         canvas->drawText(kLabel10, strlen(kLabel10), 265, 10, textPaint);

         canvas->translate(80, 20);

         // since we draw into this directly, we need to start fresh
         sk_bzero(fBuffer, fBufferSize);

         SkImageInfo info = SkImageInfo::MakeN32Premul(W, H);
         SkAutoTUnref<SkSurface> surf0(SkSurface::NewRasterDirect(info, fBuffer, RB));
         SkAutoTUnref<SkSurface> surf1(SkSurface::NewRaster(info));
         SkAutoTUnref<SkSurface> surf2;  // gpu

 #if SK_SUPPORT_GPU
         surf2.reset(SkSurface::NewRenderTarget(canvas->getGrContext(),
                                                SkSurface::kNo_Budgeted, info));
 #endif

         test_surface(canvas, surf0, true);
         canvas->translate(80, 0);
         test_surface(canvas, surf1, true);
         if (surf2) {
             canvas->translate(80, 0);
             test_surface(canvas, surf2, true);
         }
     }

 private:
     typedef skiagm::GM INHERITED;
 };
 DEF_GM( return new ImageGM; )

 class ImageResizeGM : public skiagm::GM {
     enum {
         W = 100,
         H = 100,
     };
 public:
     ImageResizeGM() {}

 protected:
     SkString onShortName() SK_OVERRIDE { return SkString("image-resize"); }

     SkISize onISize() SK_OVERRIDE { return SkISize::Make(510, 480); }

     void drawIntoImage(SkCanvas* canvas) {
         SkPaint paint;
         paint.setAntiAlias(true);
         paint.setStyle(SkPaint::kStroke_Style);
         paint.setStrokeWidth(3);
         SkRandom rand;
         for (int i = 0; i < 60; ++i) {
             paint.setColor(rand.nextU());
             SkScalar x = rand.nextUScalar1() * W;
             SkScalar y = rand.nextUScalar1() * H;
             SkScalar r = rand.nextUScalar1() * W / 2;
             canvas->drawCircle(x, y, r, paint);
         }
     }

     SkImage* makeImage(SkCanvas* canvas) {
         const SkImageInfo info = SkImageInfo::MakeN32Premul(W, H);
         SkAutoTUnref<SkSurface> surface(canvas->newSurface(info));
         if (!surface) {
             surface.reset(SkSurface::NewRaster(info));
         }
         this->drawIntoImage(surface->getCanvas());
         return surface->newImageSnapshot();
     }

     void drawResized(SkCanvas* canvas, SkImage* image, int newW, int newH, const SkIRect* subset,
                      SkFilterQuality fq) {
         // canvas method
         SkPaint paint;
         paint.setFilterQuality(fq);
         SkRect dstR = SkRect::MakeWH(SkIntToScalar(newW), SkIntToScalar(newH));
         SkRect srcR;
         if (subset) {
             srcR.set(*subset);
         }
         canvas->drawImageRect(image, subset ? &srcR : NULL, dstR, &paint);
         canvas->translate(newW + 20.0f, 0);

         // image method
         SkAutoTUnref<SkImage> image2(image->newImage(newW, newH, subset, fq));
         canvas->drawImage(image2, 0, 0, NULL);
         canvas->translate(image2->width() + 20.0f, 0);
     }

     void drawImage(SkCanvas* canvas, SkImage* image, SkFilterQuality fq) {

         canvas->drawImage(image, 0, 0, NULL);
         canvas->translate(image->width() + 20.0f, 0);
         this->drawResized(canvas, image, image->width()*4/10, image->height()*4/10, NULL, fq);

         SkIRect subset = SkIRect::MakeLTRB(W/4, H/4, W/2, H/2);
         this->drawResized(canvas, image, W, H, &subset, fq);
     }

     void onDraw(SkCanvas* canvas) SK_OVERRIDE {
         canvas->translate(10, 10);

         SkAutoTUnref<SkImage> image(this->makeImage(canvas));

         const SkFilterQuality fq[] = {
             kNone_SkFilterQuality,
             kLow_SkFilterQuality,
             kMedium_SkFilterQuality,
             kHigh_SkFilterQuality,
         };
         for (size_t i = 0; i < SK_ARRAY_COUNT(fq); ++i) {
             {
                 SkAutoCanvasRestore acr(canvas, true);
                 this->drawImage(canvas, image, fq[i]);
             }
             canvas->translate(0, image->height() + 20.0f);
         }
     }

 private:
     typedef skiagm::GM INHERITED;
 };
 DEF_GM( return new ImageResizeGM; )
	/*
	* Copyright 2011 Google Inc.
	*
	* Use of this source code is governed by a BSD-style license that can be
	* found in the LICENSE file.
	*/

	#include "gm.h"
	#include "SkData.h"
	#include "SkCanvas.h"
	#include "SkRandom.h"
	#include "SkStream.h"
	#include "SkSurface.h"

	#if SK_SUPPORT_GPU
	#include "GrContext.h"
	#endif

	static void drawJpeg(SkCanvas* canvas, const SkISize& size) {
	// TODO: Make this draw a file that is checked in, so it can
	// be exercised on machines other than mike's. Will require a
	// rebaseline.
	SkAutoDataUnref data(SkData::NewFromFileName("/Users/mike/Downloads/skia.google.jpeg"));
	if (NULL == data.get()) {
	return;
	}
	SkImage* image = SkImage::NewFromData(data);
	if (image) {
	SkAutoCanvasRestore acr(canvas, true);
	canvas->scale(size.width() * 1.0f / image->width(),
	size.height() * 1.0f / image->height());
	canvas->drawImage(image, 0, 0, NULL);
	image->unref();
	}
	}

	static void drawContents(SkSurface* surface, SkColor fillC) {
	SkSize size = SkSize::Make(SkIntToScalar(surface->width()),
	SkIntToScalar(surface->height()));
	SkCanvas* canvas = surface->getCanvas();

	SkScalar stroke = size.fWidth / 10;
	SkScalar radius = (size.fWidth - stroke) / 2;

	SkPaint paint;

	paint.setAntiAlias(true);
	paint.setColor(fillC);
	canvas->drawCircle(size.fWidth/2, size.fHeight/2, radius, paint);

	paint.setStyle(SkPaint::kStroke_Style);
	paint.setStrokeWidth(stroke);
	paint.setColor(SK_ColorBLACK);
	canvas->drawCircle(size.fWidth/2, size.fHeight/2, radius, paint);
	}

	static void test_surface(SkCanvas* canvas, SkSurface* surf, bool usePaint) {
	drawContents(surf, SK_ColorRED);
	SkImage* imgR = surf->newImageSnapshot();

	if (true) {
	SkImage* imgR2 = surf->newImageSnapshot();
	SkASSERT(imgR == imgR2);
	imgR2->unref();
	}

	drawContents(surf, SK_ColorGREEN);
	SkImage* imgG = surf->newImageSnapshot();

	// since we've drawn after we snapped imgR, imgG will be a different obj
	SkASSERT(imgR != imgG);

	drawContents(surf, SK_ColorBLUE);

	SkPaint paint;
	// paint.setFilterBitmap(true);
	// paint.setAlpha(0x80);

	canvas->drawImage(imgR, 0, 0, usePaint ? &paint : NULL);
	canvas->drawImage(imgG, 0, 80, usePaint ? &paint : NULL);
	surf->draw(canvas, 0, 160, usePaint ? &paint : NULL);

	SkRect src1, src2, src3;
	src1.iset(0, 0, surf->width(), surf->height());
	src2.iset(-surf->width() / 2, -surf->height() / 2,
	surf->width(), surf->height());
	src3.iset(0, 0, surf->width() / 2, surf->height() / 2);

	SkRect dst1, dst2, dst3, dst4;
	dst1.set(0, 240, 65, 305);
	dst2.set(0, 320, 65, 385);
	dst3.set(0, 400, 65, 465);
	dst4.set(0, 480, 65, 545);

	canvas->drawImageRect(imgR, &src1, dst1, usePaint ? &paint : NULL);
	canvas->drawImageRect(imgG, &src2, dst2, usePaint ? &paint : NULL);
	canvas->drawImageRect(imgR, &src3, dst3, usePaint ? &paint : NULL);
	canvas->drawImageRect(imgG, NULL, dst4, usePaint ? &paint : NULL);

	imgG->unref();
	imgR->unref();
	}

	class ImageGM : public skiagm::GM {
	void* fBuffer;
	size_t fBufferSize;
	SkSize fSize;
	enum {
	W = 64,
	H = 64,
	RB = W * 4 + 8,
	};
	public:
	ImageGM() {
	fBufferSize = RB * H;
	fBuffer = sk_malloc_throw(fBufferSize);
	fSize.set(SkIntToScalar(W), SkIntToScalar(H));
	}

	virtual ~ImageGM() {
	sk_free(fBuffer);
	}

	protected:
	SkString onShortName() SK_OVERRIDE {
	return SkString("image-surface");
	}

	SkISize onISize() SK_OVERRIDE {
	return SkISize::Make(960, 1200);
	}

	void onDraw(SkCanvas* canvas) SK_OVERRIDE {
	drawJpeg(canvas, this->getISize());

	canvas->scale(2, 2);

	static const char* kLabel1 = "Original Img";
	static const char* kLabel2 = "Modified Img";
	static const char* kLabel3 = "Cur Surface";
	static const char* kLabel4 = "Full Crop";
	static const char* kLabel5 = "Over-crop";
	static const char* kLabel6 = "Upper-left";
	static const char* kLabel7 = "No Crop";

	static const char* kLabel8 = "Pre-Alloc Img";
	static const char* kLabel9 = "New Alloc Img";
	static const char* kLabel10 = "GPU";

	SkPaint textPaint;
	textPaint.setAntiAlias(true);
	sk_tool_utils::set_portable_typeface(&textPaint);
	textPaint.setTextSize(8);

	canvas->drawText(kLabel1, strlen(kLabel1), 10, 60, textPaint);
	canvas->drawText(kLabel2, strlen(kLabel2), 10, 140, textPaint);
	canvas->drawText(kLabel3, strlen(kLabel3), 10, 220, textPaint);
	canvas->drawText(kLabel4, strlen(kLabel4), 10, 300, textPaint);
	canvas->drawText(kLabel5, strlen(kLabel5), 10, 380, textPaint);
	canvas->drawText(kLabel6, strlen(kLabel6), 10, 460, textPaint);
	canvas->drawText(kLabel7, strlen(kLabel7), 10, 540, textPaint);

	canvas->drawText(kLabel8, strlen(kLabel8), 80, 10, textPaint);
	canvas->drawText(kLabel9, strlen(kLabel9), 160, 10, textPaint);
	canvas->drawText(kLabel10, strlen(kLabel10), 265, 10, textPaint);

	canvas->translate(80, 20);

	// since we draw into this directly, we need to start fresh
	sk_bzero(fBuffer, fBufferSize);

	SkImageInfo info = SkImageInfo::MakeN32Premul(W, H);
	SkAutoTUnref<SkSurface> surf0(SkSurface::NewRasterDirect(info, fBuffer, RB));
	SkAutoTUnref<SkSurface> surf1(SkSurface::NewRaster(info));
	SkAutoTUnref<SkSurface> surf2; // gpu

	#if SK_SUPPORT_GPU
	surf2.reset(SkSurface::NewRenderTarget(canvas->getGrContext(),
	SkSurface::kNo_Budgeted, info));
	#endif

	test_surface(canvas, surf0, true);
	canvas->translate(80, 0);
	test_surface(canvas, surf1, true);
	if (surf2) {
	canvas->translate(80, 0);
	test_surface(canvas, surf2, true);
	}
	}

	private:
	typedef skiagm::GM INHERITED;
	};
	DEF_GM( return new ImageGM; )

	class ImageResizeGM : public skiagm::GM {
	enum {
	W = 100,
	H = 100,
	};
	public:
	ImageResizeGM() {}

	protected:
	SkString onShortName() SK_OVERRIDE { return SkString("image-resize"); }

	SkISize onISize() SK_OVERRIDE { return SkISize::Make(510, 480); }

	void drawIntoImage(SkCanvas* canvas) {
	SkPaint paint;
	paint.setAntiAlias(true);
	paint.setStyle(SkPaint::kStroke_Style);
	paint.setStrokeWidth(3);
	SkRandom rand;
	for (int i = 0; i < 60; ++i) {
	paint.setColor(rand.nextU());
	SkScalar x = rand.nextUScalar1() * W;
	SkScalar y = rand.nextUScalar1() * H;
	SkScalar r = rand.nextUScalar1() * W / 2;
	canvas->drawCircle(x, y, r, paint);
	}
	}

	SkImage* makeImage(SkCanvas* canvas) {
	const SkImageInfo info = SkImageInfo::MakeN32Premul(W, H);
	SkAutoTUnref<SkSurface> surface(canvas->newSurface(info));
	if (!surface) {
	surface.reset(SkSurface::NewRaster(info));
	}
	this->drawIntoImage(surface->getCanvas());
	return surface->newImageSnapshot();
	}

	void drawResized(SkCanvas* canvas, SkImage* image, int newW, int newH, const SkIRect* subset,
	SkFilterQuality fq) {
	// canvas method
	SkPaint paint;
	paint.setFilterQuality(fq);
	SkRect dstR = SkRect::MakeWH(SkIntToScalar(newW), SkIntToScalar(newH));
	SkRect srcR;
	if (subset) {
	srcR.set(*subset);
	}
	canvas->drawImageRect(image, subset ? &srcR : NULL, dstR, &paint);
	canvas->translate(newW + 20.0f, 0);

	// image method
	SkAutoTUnref<SkImage> image2(image->newImage(newW, newH, subset, fq));
	canvas->drawImage(image2, 0, 0, NULL);
	canvas->translate(image2->width() + 20.0f, 0);
	}

	void drawImage(SkCanvas* canvas, SkImage* image, SkFilterQuality fq) {

	canvas->drawImage(image, 0, 0, NULL);
	canvas->translate(image->width() + 20.0f, 0);
	this->drawResized(canvas, image, image->width()4/10, image->height()4/10, NULL, fq);

	SkIRect subset = SkIRect::MakeLTRB(W/4, H/4, W/2, H/2);
	this->drawResized(canvas, image, W, H, &subset, fq);
	}

	void onDraw(SkCanvas* canvas) SK_OVERRIDE {
	canvas->translate(10, 10);

	SkAutoTUnref<SkImage> image(this->makeImage(canvas));

	const SkFilterQuality fq[] = {
	kNone_SkFilterQuality,
	kLow_SkFilterQuality,
	kMedium_SkFilterQuality,
	kHigh_SkFilterQuality,
	};
	for (size_t i = 0; i < SK_ARRAY_COUNT(fq); ++i) {
	{
	SkAutoCanvasRestore acr(canvas, true);
	this->drawImage(canvas, image, fq[i]);
	}
	canvas->translate(0, image->height() + 20.0f);
	}
	}

	private:
	typedef skiagm::GM INHERITED;
	};
	DEF_GM( return new ImageResizeGM; )