/*
* 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 <functional>
#include "gm.h"
#include "sk_tool_utils.h"
#include "SkAutoPixmapStorage.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.
sk_sp<SkData> data(SkData::MakeFromFileName("/Users/mike/Downloads/skia.google.jpeg"));
if (nullptr == data) {
return;
}
sk_sp<SkImage> image = SkImage::MakeFromEncoded(std::move(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, nullptr);
}
}
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);
sk_sp<SkImage> imgR = surf->makeImageSnapshot();
if (true) {
sk_sp<SkImage> imgR2 = surf->makeImageSnapshot();
SkASSERT(imgR == imgR2);
}
drawContents(surf, SK_ColorGREEN);
sk_sp<SkImage> imgG = surf->makeImageSnapshot();
// 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 : nullptr);
canvas->drawImage(imgG, 0, 80, usePaint ? &paint : nullptr);
surf->draw(canvas, 0, 160, usePaint ? &paint : nullptr);
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 : nullptr);
canvas->drawImageRect(imgG, src2, dst2, usePaint ? &paint : nullptr);
canvas->drawImageRect(imgR, src3, dst3, usePaint ? &paint : nullptr);
canvas->drawImageRect(imgG, dst4, usePaint ? &paint : nullptr);
}
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));
}
~ImageGM() override {
sk_free(fBuffer);
}
protected:
SkString onShortName() override {
return SkString("image-surface");
}
SkISize onISize() override {
return SkISize::Make(960, 1200);
}
void onDraw(SkCanvas* canvas) override {
drawJpeg(canvas, this->getISize());
canvas->scale(2, 2);
const char* kLabel1 = "Original Img";
const char* kLabel2 = "Modified Img";
const char* kLabel3 = "Cur Surface";
const char* kLabel4 = "Full Crop";
const char* kLabel5 = "Over-crop";
const char* kLabel6 = "Upper-left";
const char* kLabel7 = "No Crop";
const char* kLabel8 = "Pre-Alloc Img";
const char* kLabel9 = "New Alloc Img";
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);
sk_sp<SkSurface> surf0(SkSurface::MakeRasterDirect(info, fBuffer, RB));
sk_sp<SkSurface> surf1(SkSurface::MakeRaster(info));
sk_sp<SkSurface> surf2; // gpu
#if SK_SUPPORT_GPU
surf2 = SkSurface::MakeRenderTarget(canvas->getGrContext(), SkBudgeted::kNo, info);
#endif
test_surface(canvas, surf0.get(), true);
canvas->translate(80, 0);
test_surface(canvas, surf1.get(), true);
if (surf2) {
canvas->translate(80, 0);
test_surface(canvas, surf2.get(), true);
}
}
private:
typedef skiagm::GM INHERITED;
};
DEF_GM( return new ImageGM; )
///////////////////////////////////////////////////////////////////////////////////////////////////
#include "SkPictureRecorder.h"
static void draw_pixmap(SkCanvas* canvas, const SkPixmap& pmap) {
SkBitmap bitmap;
bitmap.installPixels(pmap);
canvas->drawBitmap(bitmap, 0, 0, nullptr);
}
static void show_scaled_pixels(SkCanvas* canvas, SkImage* image) {
SkAutoCanvasRestore acr(canvas, true);
canvas->drawImage(image, 0, 0, nullptr);
canvas->translate(110, 10);
const SkImageInfo info = SkImageInfo::MakeN32Premul(40, 40);
SkAutoPixmapStorage storage;
storage.alloc(info);
const SkImage::CachingHint chints[] = {
SkImage::kAllow_CachingHint, SkImage::kDisallow_CachingHint,
};
const SkFilterQuality qualities[] = {
kNone_SkFilterQuality, kLow_SkFilterQuality, kMedium_SkFilterQuality, kHigh_SkFilterQuality,
};
for (auto ch : chints) {
canvas->save();
for (auto q : qualities) {
if (image->scalePixels(storage, q, ch)) {
draw_pixmap(canvas, storage);
}
canvas->translate(70, 0);
}
canvas->restore();
canvas->translate(0, 45);
}
}
static void draw_contents(SkCanvas* canvas) {
SkPaint paint;
paint.setStyle(SkPaint::kStroke_Style);
paint.setStrokeWidth(20);
canvas->drawCircle(50, 50, 35, paint);
}
static sk_sp<SkImage> make_raster(const SkImageInfo& info, GrContext*, void (*draw)(SkCanvas*)) {
auto surface(SkSurface::MakeRaster(info));
draw(surface->getCanvas());
return surface->makeImageSnapshot();
}
static sk_sp<SkImage> make_picture(const SkImageInfo& info, GrContext*, void (*draw)(SkCanvas*)) {
SkPictureRecorder recorder;
draw(recorder.beginRecording(SkRect::MakeIWH(info.width(), info.height())));
return SkImage::MakeFromPicture(recorder.finishRecordingAsPicture(),
info.dimensions(), nullptr, nullptr, SkImage::BitDepth::kU8,
SkColorSpace::MakeSRGB());
}
static sk_sp<SkImage> make_codec(const SkImageInfo& info, GrContext*, void (*draw)(SkCanvas*)) {
sk_sp<SkImage> image(make_raster(info, nullptr, draw));
sk_sp<SkData> data(image->encode());
return SkImage::MakeFromEncoded(data);
}
static sk_sp<SkImage> make_gpu(const SkImageInfo& info, GrContext* ctx, void (*draw)(SkCanvas*)) {
if (!ctx) { return nullptr; }
auto surface(SkSurface::MakeRenderTarget(ctx, SkBudgeted::kNo, info));
if (!surface) { return nullptr; }
draw(surface->getCanvas());
return surface->makeImageSnapshot();
}
typedef sk_sp<SkImage> (*ImageMakerProc)(const SkImageInfo&, GrContext*, void (*)(SkCanvas*));
class ScalePixelsGM : public skiagm::GM {
public:
ScalePixelsGM() {}
protected:
SkString onShortName() override {
return SkString("scale-pixels");
}
SkISize onISize() override {
return SkISize::Make(960, 1200);
}
void onDraw(SkCanvas* canvas) override {
const SkImageInfo info = SkImageInfo::MakeN32Premul(100, 100);
const ImageMakerProc procs[] = {
make_codec, make_raster, make_picture, make_codec, make_gpu,
};
for (auto& proc : procs) {
sk_sp<SkImage> image(proc(info, canvas->getGrContext(), draw_contents));
if (image) {
show_scaled_pixels(canvas, image.get());
}
canvas->translate(0, 120);
}
}
private:
typedef skiagm::GM INHERITED;
};
DEF_GM( return new ScalePixelsGM; )
///////////////////////////////////////////////////////////////////////////////////////////////////
DEF_SIMPLE_GM(new_texture_image, canvas, 280, 60) {
GrContext* context = canvas->getGrContext();
if (!context) {
skiagm::GM::DrawGpuOnlyMessage(canvas);
return;
}
auto render_image = [](SkCanvas* canvas) {
canvas->clear(SK_ColorBLUE);
SkPaint paint;
paint.setColor(SK_ColorRED);
canvas->drawRect(SkRect::MakeXYWH(10.f,10.f,10.f,10.f), paint);
paint.setColor(SK_ColorGREEN);
canvas->drawRect(SkRect::MakeXYWH(30.f,10.f,10.f,10.f), paint);
paint.setColor(SK_ColorYELLOW);
canvas->drawRect(SkRect::MakeXYWH(10.f,30.f,10.f,10.f), paint);
paint.setColor(SK_ColorCYAN);
canvas->drawRect(SkRect::MakeXYWH(30.f,30.f,10.f,10.f), paint);
};
static constexpr int kSize = 50;
SkBitmap bmp;
bmp.allocPixels(SkImageInfo::MakeS32(kSize, kSize, kPremul_SkAlphaType));
SkCanvas bmpCanvas(bmp);
render_image(&bmpCanvas);
std::function<sk_sp<SkImage>()> imageFactories[] = {
// Create sw raster image.
[bmp] {
return SkImage::MakeFromBitmap(bmp);
},
// Create encoded image.
[bmp] {
sk_sp<SkData> src(
sk_tool_utils::EncodeImageToData(bmp, SkEncodedImageFormat::kPNG, 100));
return SkImage::MakeFromEncoded(std::move(src));
},
// Create YUV encoded image.
[bmp] {
sk_sp<SkData> src(
sk_tool_utils::EncodeImageToData(bmp, SkEncodedImageFormat::kJPEG, 100));
return SkImage::MakeFromEncoded(std::move(src));
},
// Create a picture image.
[render_image] {
SkPictureRecorder recorder;
SkCanvas* canvas = recorder.beginRecording(SkIntToScalar(kSize), SkIntToScalar(kSize));
render_image(canvas);
sk_sp<SkColorSpace> srgbColorSpace = SkColorSpace::MakeSRGB();
return SkImage::MakeFromPicture(recorder.finishRecordingAsPicture(),
SkISize::Make(kSize, kSize), nullptr, nullptr,
SkImage::BitDepth::kU8, srgbColorSpace);
},
// Create a texture image
[context, render_image]() -> sk_sp<SkImage> {
auto surface(SkSurface::MakeRenderTarget(context, SkBudgeted::kYes,
SkImageInfo::MakeS32(kSize, kSize,
kPremul_SkAlphaType)));
if (!surface) {
return nullptr;
}
render_image(surface->getCanvas());
return surface->makeImageSnapshot();
}
};
constexpr SkScalar kPad = 5.f;
canvas->translate(kPad, kPad);
for (auto factory : imageFactories) {
auto image(factory());
if (image) {
sk_sp<SkImage> texImage(image->makeTextureImage(context,
canvas->imageInfo().colorSpace()));
if (texImage) {
canvas->drawImage(texImage, 0, 0);
}
}
canvas->translate(kSize + kPad, 0);
}
}