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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/gm.h"
- #include "include/core/SkBitmap.h"
- #include "include/core/SkCanvas.h"
- #include "include/core/SkFilterQuality.h"
- #include "include/core/SkImage.h"
- #include "include/core/SkImageInfo.h"
- #include "include/core/SkPaint.h"
- #include "include/core/SkRect.h"
- #include "include/core/SkRefCnt.h"
- #include "include/core/SkScalar.h"
- #include "include/core/SkSize.h"
- #include "include/core/SkString.h"
- #include "include/core/SkSurface.h"
- #include "tools/ToolUtils.h"
- static sk_sp<SkSurface> make_surface(SkCanvas* root, int N) {
- SkImageInfo info = SkImageInfo::MakeN32Premul(N, N);
- return ToolUtils::makeSurface(root, info);
- }
- 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->isValid(canvas->getGrContext())) {
- 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 SkSize 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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