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/*
* 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 "SkSurface.h"
static sk_sp<SkSurface> make_surface(SkCanvas* root, int N) {
SkImageInfo info = SkImageInfo::MakeN32Premul(N, N);
auto surface = root->makeSurface(info);
if (!surface) {
surface = SkSurface::MakeRaster(info);
}
return surface;
}
static sk_sp<SkImage> make_image(SkCanvas* root, SkIRect* center) {
const int kFixed = 28;
const int kStretchy = 8;
const int kSize = 2*kFixed + kStretchy;
auto surface(make_surface(root, kSize));
SkCanvas* canvas = surface->getCanvas();
SkRect r = SkRect::MakeWH(SkIntToScalar(kSize), SkIntToScalar(kSize));
const SkScalar strokeWidth = SkIntToScalar(6);
const SkScalar radius = SkIntToScalar(kFixed) - strokeWidth/2;
center->setXYWH(kFixed, kFixed, kStretchy, kStretchy);
SkPaint paint;
paint.setAntiAlias(true);
paint.setColor(0xFFFF0000);
canvas->drawRoundRect(r, radius, radius, paint);
r.setXYWH(SkIntToScalar(kFixed), 0, SkIntToScalar(kStretchy), SkIntToScalar(kSize));
paint.setColor(0x8800FF00);
canvas->drawRect(r, paint);
r.setXYWH(0, SkIntToScalar(kFixed), SkIntToScalar(kSize), SkIntToScalar(kStretchy));
paint.setColor(0x880000FF);
canvas->drawRect(r, paint);
return surface->makeImageSnapshot();
}
static void image_to_bitmap(const SkImage* image, SkBitmap* bm) {
SkImageInfo info = SkImageInfo::MakeN32Premul(image->width(), image->height());
bm->allocPixels(info);
image->readPixels(info, bm->getPixels(), bm->rowBytes(), 0, 0);
}
class NinePatchStretchGM : public skiagm::GM {
public:
sk_sp<SkImage> fImage;
SkBitmap fBitmap;
SkIRect fCenter;
NinePatchStretchGM() {}
protected:
SkString onShortName() override {
return SkString("ninepatch-stretch");
}
SkISize onISize() override {
return SkISize::Make(760, 800);
}
void onDraw(SkCanvas* canvas) override {
if (nullptr == fBitmap.pixelRef()) {
fImage = make_image(canvas, &fCenter);
image_to_bitmap(fImage.get(), &fBitmap);
}
// amount of bm that should not be stretched (unless we have to)
const SkScalar fixed = SkIntToScalar(fBitmap.width() - fCenter.width());
const SkTSize<SkScalar> size[] = {
{ fixed * 4 / 5, fixed * 4 / 5 }, // shrink in both axes
{ fixed * 4 / 5, fixed * 4 }, // shrink in X
{ fixed * 4, fixed * 4 / 5 }, // shrink in Y
{ fixed * 4, fixed * 4 }
};
canvas->drawBitmap(fBitmap, 10, 10, nullptr);
SkScalar x = SkIntToScalar(100);
SkScalar y = SkIntToScalar(100);
SkPaint paint;
for (int filter = 0; filter < 2; filter++) {
paint.setFilterQuality(filter == 0 ? kLow_SkFilterQuality : kNone_SkFilterQuality);
canvas->translate(0, filter * SkIntToScalar(400));
for (int iy = 0; iy < 2; ++iy) {
for (int ix = 0; ix < 2; ++ix) {
int i = ix * 2 + iy;
SkRect r = SkRect::MakeXYWH(x + ix * fixed, y + iy * fixed,
size[i].width(), size[i].height());
canvas->drawBitmapNine(fBitmap, fCenter, r, &paint);
canvas->drawImageNine(fImage.get(), fCenter, r.makeOffset(360, 0), &paint);
}
}
}
}
private:
typedef skiagm::GM INHERITED;
};
DEF_GM( return new NinePatchStretchGM; )
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