| /* |
| * 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.setWH(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, |
| SkSamplingOptions())); |
| 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 < std::size(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: |
| |
| using INHERITED = Sample; |
| }; |
| |
| ////////////////////////////////////////////////////////////////////////////// |
| |
| DEF_SAMPLE( return new AARectView(); ) |