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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 "include/core/SkBitmap.h"
- #include "include/core/SkCanvas.h"
- #include "include/core/SkPaint.h"
- #include "include/core/SkShader.h"
- #include "samplecode/Sample.h"
- static SkBitmap createBitmap(int n) {
- SkBitmap bitmap;
- bitmap.allocN32Pixels(n, n);
- bitmap.eraseColor(SK_ColorGREEN);
- SkCanvas canvas(bitmap);
- SkRect r;
- r.set(0, 0, SkIntToScalar(n), SkIntToScalar(n));
- SkPaint paint;
- paint.setAntiAlias(true);
- paint.setColor(SK_ColorRED);
- canvas.drawOval(r, paint);
- paint.setColor(SK_ColorBLUE);
- paint.setStrokeWidth(SkIntToScalar(n)/15);
- paint.setStyle(SkPaint::kStroke_Style);
- canvas.drawLine(0, 0, r.fRight, r.fBottom, paint);
- canvas.drawLine(0, r.fBottom, r.fRight, 0, paint);
- return bitmap;
- }
- static constexpr int N = 64;
- class AARectView : public Sample {
- SkBitmap fBitmap;
- void onOnceBeforeDraw() override {
- fBitmap = createBitmap(N);
- }
- SkString name() override { return SkString("AA Rects"); }
- void onDrawContent(SkCanvas* canvas) override {
- canvas->translate(SkIntToScalar(10), SkIntToScalar(10));
- SkPaint bluePaint;
- bluePaint.setARGB(0xff, 0x0, 0x0, 0xff);
- SkPaint bmpPaint;
- bmpPaint.setShader(fBitmap.makeShader(SkTileMode::kRepeat, SkTileMode::kRepeat));
- bluePaint.setStrokeWidth(3);
- bmpPaint.setStrokeWidth(3);
- SkPaint paints[] = { bluePaint, bmpPaint };
- SkRect rect;
- SkScalar dx = SkIntToScalar(80);
- SkScalar dy = SkIntToScalar(100);
- SkMatrix matrix;
- for (size_t p = 0; p < SK_ARRAY_COUNT(paints); ++p) {
- for (int stroke = 0; stroke < 2; ++stroke) {
- paints[p].setStyle(stroke ? SkPaint::kStroke_Style : SkPaint::kFill_Style);
- for (int a = 0; a < 3; ++ a) {
- paints[p].setAntiAlias(a > 0);
- paints[p].setAlpha(a > 1 ? 0x80 : 0xff);
- canvas->save();
- rect = SkRect::MakeLTRB(0.f,
- 0.f,
- 40.f,
- 40.f);
- canvas->drawRect(rect, paints[p]);
- canvas->translate(dx, 0);
- rect = SkRect::MakeLTRB(0.5f,
- 0.5f,
- 40.5f,
- 40.5f);
- canvas->drawRect(rect, paints[p]);
- canvas->translate(dx, 0);
- rect = SkRect::MakeLTRB(0.5f,
- 0.5f,
- 40.f,
- 40.f);
- canvas->drawRect(rect, paints[p]);
- canvas->translate(dx, 0);
- rect = SkRect::MakeLTRB(0.75f,
- 0.75f,
- 40.75f,
- 40.75f);
- canvas->drawRect(rect, paints[p]);
- canvas->translate(dx, 0);
- canvas->save();
- canvas->translate(.33f, .67f);
- rect = SkRect::MakeLTRB(0.0f,
- 0.0f,
- 40.0f,
- 40.0f);
- canvas->drawRect(rect, paints[p]);
- canvas->restore();
- canvas->translate(dx, 0);
- canvas->save();
- matrix.setRotate(45.f);
- canvas->concat(matrix);
- canvas->translate(20.0f / sqrtf(2.f),
- 20.0f / sqrtf(2.f));
- rect = SkRect::MakeLTRB(-20.0f,
- -20.0f,
- 20.0f,
- 20.0f);
- canvas->drawRect(rect, paints[p]);
- canvas->restore();
- canvas->translate(dx, 0);
- canvas->save();
- canvas->rotate(90.f);
- rect = SkRect::MakeLTRB(0.0f,
- 0.0f,
- 40.0f,
- -40.0f);
- canvas->drawRect(rect, paints[p]);
- canvas->restore();
- canvas->translate(dx, 0);
- canvas->save();
- canvas->rotate(90.f);
- rect = SkRect::MakeLTRB(0.5f,
- 0.5f,
- 40.5f,
- -40.5f);
- canvas->drawRect(rect, paints[p]);
- canvas->restore();
- canvas->translate(dx, 0);
- canvas->save();
- matrix.setScale(-1.f, -1.f);
- canvas->concat(matrix);
- rect = SkRect::MakeLTRB(0.5f,
- 0.5f,
- -40.5f,
- -40.5f);
- canvas->drawRect(rect, paints[p]);
- canvas->restore();
- canvas->translate(dx, 0);
- canvas->save();
- matrix.setScale(2.1f, 4.1f);
- canvas->concat(matrix);
- rect = SkRect::MakeLTRB(0.1f,
- 0.1f,
- 19.1f,
- 9.1f);
- canvas->drawRect(rect, paints[p]);
- canvas->restore();
- canvas->translate(dx, 0);
- canvas->restore();
- canvas->translate(0, dy);
- }
- }
- }
- }
- private:
- typedef Sample INHERITED;
- };
- //////////////////////////////////////////////////////////////////////////////
- DEF_SAMPLE( return new AARectView(); )
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