288 lines
8.9 KiB
C++
288 lines
8.9 KiB
C++
/*
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* Copyright 2011 Google Inc.
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*
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#include "gm.h"
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#include "SkData.h"
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#include "SkCanvas.h"
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#include "SkRandom.h"
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#include "SkStream.h"
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#include "SkSurface.h"
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#if SK_SUPPORT_GPU
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#include "GrContext.h"
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#endif
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static void drawJpeg(SkCanvas* canvas, const SkISize& size) {
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// TODO: Make this draw a file that is checked in, so it can
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// be exercised on machines other than mike's. Will require a
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// rebaseline.
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SkAutoDataUnref data(SkData::NewFromFileName("/Users/mike/Downloads/skia.google.jpeg"));
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if (NULL == data.get()) {
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return;
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}
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SkImage* image = SkImage::NewFromEncoded(data);
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if (image) {
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SkAutoCanvasRestore acr(canvas, true);
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canvas->scale(size.width() * 1.0f / image->width(),
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size.height() * 1.0f / image->height());
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canvas->drawImage(image, 0, 0, NULL);
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image->unref();
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}
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}
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static void drawContents(SkSurface* surface, SkColor fillC) {
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SkSize size = SkSize::Make(SkIntToScalar(surface->width()),
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SkIntToScalar(surface->height()));
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SkCanvas* canvas = surface->getCanvas();
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SkScalar stroke = size.fWidth / 10;
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SkScalar radius = (size.fWidth - stroke) / 2;
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SkPaint paint;
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paint.setAntiAlias(true);
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paint.setColor(fillC);
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canvas->drawCircle(size.fWidth/2, size.fHeight/2, radius, paint);
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paint.setStyle(SkPaint::kStroke_Style);
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paint.setStrokeWidth(stroke);
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paint.setColor(SK_ColorBLACK);
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canvas->drawCircle(size.fWidth/2, size.fHeight/2, radius, paint);
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}
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static void test_surface(SkCanvas* canvas, SkSurface* surf, bool usePaint) {
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drawContents(surf, SK_ColorRED);
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SkImage* imgR = surf->newImageSnapshot();
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if (true) {
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SkImage* imgR2 = surf->newImageSnapshot();
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SkASSERT(imgR == imgR2);
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imgR2->unref();
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}
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drawContents(surf, SK_ColorGREEN);
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SkImage* imgG = surf->newImageSnapshot();
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// since we've drawn after we snapped imgR, imgG will be a different obj
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SkASSERT(imgR != imgG);
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drawContents(surf, SK_ColorBLUE);
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SkPaint paint;
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// paint.setFilterBitmap(true);
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// paint.setAlpha(0x80);
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canvas->drawImage(imgR, 0, 0, usePaint ? &paint : NULL);
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canvas->drawImage(imgG, 0, 80, usePaint ? &paint : NULL);
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surf->draw(canvas, 0, 160, usePaint ? &paint : NULL);
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SkRect src1, src2, src3;
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src1.iset(0, 0, surf->width(), surf->height());
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src2.iset(-surf->width() / 2, -surf->height() / 2,
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surf->width(), surf->height());
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src3.iset(0, 0, surf->width() / 2, surf->height() / 2);
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SkRect dst1, dst2, dst3, dst4;
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dst1.set(0, 240, 65, 305);
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dst2.set(0, 320, 65, 385);
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dst3.set(0, 400, 65, 465);
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dst4.set(0, 480, 65, 545);
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canvas->drawImageRect(imgR, src1, dst1, usePaint ? &paint : NULL);
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canvas->drawImageRect(imgG, src2, dst2, usePaint ? &paint : NULL);
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canvas->drawImageRect(imgR, src3, dst3, usePaint ? &paint : NULL);
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canvas->drawImageRect(imgG, dst4, usePaint ? &paint : NULL);
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imgG->unref();
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imgR->unref();
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}
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class ImageGM : public skiagm::GM {
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void* fBuffer;
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size_t fBufferSize;
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SkSize fSize;
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enum {
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W = 64,
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H = 64,
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RB = W * 4 + 8,
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};
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public:
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ImageGM() {
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fBufferSize = RB * H;
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fBuffer = sk_malloc_throw(fBufferSize);
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fSize.set(SkIntToScalar(W), SkIntToScalar(H));
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}
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virtual ~ImageGM() {
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sk_free(fBuffer);
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}
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protected:
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SkString onShortName() override {
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return SkString("image-surface");
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}
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SkISize onISize() override {
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return SkISize::Make(960, 1200);
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}
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void onDraw(SkCanvas* canvas) override {
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drawJpeg(canvas, this->getISize());
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canvas->scale(2, 2);
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static const char* kLabel1 = "Original Img";
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static const char* kLabel2 = "Modified Img";
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static const char* kLabel3 = "Cur Surface";
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static const char* kLabel4 = "Full Crop";
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static const char* kLabel5 = "Over-crop";
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static const char* kLabel6 = "Upper-left";
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static const char* kLabel7 = "No Crop";
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static const char* kLabel8 = "Pre-Alloc Img";
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static const char* kLabel9 = "New Alloc Img";
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static const char* kLabel10 = "GPU";
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SkPaint textPaint;
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textPaint.setAntiAlias(true);
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sk_tool_utils::set_portable_typeface(&textPaint);
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textPaint.setTextSize(8);
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canvas->drawText(kLabel1, strlen(kLabel1), 10, 60, textPaint);
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canvas->drawText(kLabel2, strlen(kLabel2), 10, 140, textPaint);
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canvas->drawText(kLabel3, strlen(kLabel3), 10, 220, textPaint);
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canvas->drawText(kLabel4, strlen(kLabel4), 10, 300, textPaint);
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canvas->drawText(kLabel5, strlen(kLabel5), 10, 380, textPaint);
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canvas->drawText(kLabel6, strlen(kLabel6), 10, 460, textPaint);
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canvas->drawText(kLabel7, strlen(kLabel7), 10, 540, textPaint);
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canvas->drawText(kLabel8, strlen(kLabel8), 80, 10, textPaint);
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canvas->drawText(kLabel9, strlen(kLabel9), 160, 10, textPaint);
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canvas->drawText(kLabel10, strlen(kLabel10), 265, 10, textPaint);
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canvas->translate(80, 20);
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// since we draw into this directly, we need to start fresh
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sk_bzero(fBuffer, fBufferSize);
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SkImageInfo info = SkImageInfo::MakeN32Premul(W, H);
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SkAutoTUnref<SkSurface> surf0(SkSurface::NewRasterDirect(info, fBuffer, RB));
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SkAutoTUnref<SkSurface> surf1(SkSurface::NewRaster(info));
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SkAutoTUnref<SkSurface> surf2; // gpu
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#if SK_SUPPORT_GPU
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surf2.reset(SkSurface::NewRenderTarget(canvas->getGrContext(),
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SkSurface::kNo_Budgeted, info));
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#endif
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test_surface(canvas, surf0, true);
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canvas->translate(80, 0);
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test_surface(canvas, surf1, true);
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if (surf2) {
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canvas->translate(80, 0);
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test_surface(canvas, surf2, true);
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}
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}
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private:
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typedef skiagm::GM INHERITED;
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};
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DEF_GM( return new ImageGM; )
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class ImageResizeGM : public skiagm::GM {
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enum {
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W = 100,
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H = 100,
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};
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public:
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ImageResizeGM() {}
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protected:
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SkString onShortName() override { return SkString("image-resize"); }
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SkISize onISize() override { return SkISize::Make(510, 480); }
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void drawIntoImage(SkCanvas* canvas) {
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SkPaint paint;
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paint.setAntiAlias(true);
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paint.setStyle(SkPaint::kStroke_Style);
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paint.setStrokeWidth(3);
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SkRandom rand;
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for (int i = 0; i < 60; ++i) {
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paint.setColor(rand.nextU());
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SkScalar x = rand.nextUScalar1() * W;
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SkScalar y = rand.nextUScalar1() * H;
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SkScalar r = rand.nextUScalar1() * W / 2;
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canvas->drawCircle(x, y, r, paint);
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}
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}
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SkImage* makeImage(SkCanvas* canvas) {
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const SkImageInfo info = SkImageInfo::MakeN32Premul(W, H);
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SkAutoTUnref<SkSurface> surface(canvas->newSurface(info));
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if (!surface) {
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surface.reset(SkSurface::NewRaster(info));
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}
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this->drawIntoImage(surface->getCanvas());
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return surface->newImageSnapshot();
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}
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void drawResized(SkCanvas* canvas, SkImage* image, int newW, int newH, const SkIRect* subset,
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SkFilterQuality fq) {
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// canvas method
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SkPaint paint;
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paint.setFilterQuality(fq);
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SkRect dstR = SkRect::MakeWH(SkIntToScalar(newW), SkIntToScalar(newH));
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SkRect srcR;
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if (subset) {
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srcR.set(*subset);
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}
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canvas->legacy_drawImageRect(image, subset ? &srcR : NULL, dstR, &paint);
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canvas->translate(newW + 20.0f, 0);
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// image method
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SkAutoTUnref<SkImage> image2(image->newImage(newW, newH, subset, fq));
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canvas->drawImage(image2, 0, 0, NULL);
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canvas->translate(image2->width() + 20.0f, 0);
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}
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void drawImage(SkCanvas* canvas, SkImage* image, SkFilterQuality fq) {
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canvas->drawImage(image, 0, 0, NULL);
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canvas->translate(image->width() + 20.0f, 0);
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this->drawResized(canvas, image, image->width()*4/10, image->height()*4/10, NULL, fq);
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SkIRect subset = SkIRect::MakeLTRB(W/4, H/4, W/2, H/2);
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this->drawResized(canvas, image, W, H, &subset, fq);
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}
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void onDraw(SkCanvas* canvas) override {
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canvas->translate(10, 10);
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SkAutoTUnref<SkImage> image(this->makeImage(canvas));
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const SkFilterQuality fq[] = {
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kNone_SkFilterQuality,
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kLow_SkFilterQuality,
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kMedium_SkFilterQuality,
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kHigh_SkFilterQuality,
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};
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for (size_t i = 0; i < SK_ARRAY_COUNT(fq); ++i) {
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{
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SkAutoCanvasRestore acr(canvas, true);
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this->drawImage(canvas, image, fq[i]);
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}
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canvas->translate(0, image->height() + 20.0f);
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}
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}
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private:
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typedef skiagm::GM INHERITED;
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};
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DEF_GM( return new ImageResizeGM; )
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