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- /*
- * Copyright 2013 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/SkCanvas.h"
- #include "include/core/SkColor.h"
- #include "include/core/SkPaint.h"
- #include "include/core/SkRect.h"
- #include "include/core/SkSize.h"
- #include "include/core/SkString.h"
- #include "include/core/SkTypes.h"
- namespace skiagm {
- // Draw various width thin rects at 1/8 horizontal pixel increments
- class ThinRectsGM : public GM {
- public:
- ThinRectsGM() {
- this->setBGColor(0xFF000000);
- }
- protected:
- SkString onShortName() override {
- return SkString("thinrects");
- }
- SkISize onISize() override {
- return SkISize::Make(240, 320);
- }
- void onDraw(SkCanvas* canvas) override {
- SkPaint white;
- white.setColor(SK_ColorWHITE);
- white.setAntiAlias(true);
- SkPaint green;
- green.setColor(SK_ColorGREEN);
- green.setAntiAlias(true);
- for (int i = 0; i < 8; ++i) {
- canvas->save();
- canvas->translate(i*0.125f, i*40.0f);
- DrawVertRects(canvas, white);
- canvas->translate(40.0f, 0.0f);
- DrawVertRects(canvas, green);
- canvas->restore();
- canvas->save();
- canvas->translate(80.0f, i*40.0f + i*0.125f);
- DrawHorizRects(canvas, white);
- canvas->translate(40.0f, 0.0f);
- DrawHorizRects(canvas, green);
- canvas->restore();
- canvas->save();
- canvas->translate(160.0f + i*0.125f,
- i*40.0f + i*0.125f);
- DrawSquares(canvas, white);
- canvas->translate(40.0f, 0.0f);
- DrawSquares(canvas, green);
- canvas->restore();
- }
- }
- private:
- static void DrawVertRects(SkCanvas* canvas, const SkPaint& p) {
- constexpr SkRect vertRects[] = {
- { 1, 1, 5.0f, 21 }, // 4 pix wide
- { 8, 1, 10.0f, 21 }, // 2 pix wide
- { 13, 1, 14.0f, 21 }, // 1 pix wide
- { 17, 1, 17.5f, 21 }, // 1/2 pix wide
- { 21, 1, 21.25f, 21 }, // 1/4 pix wide
- { 25, 1, 25.125f, 21 }, // 1/8 pix wide
- { 29, 1, 29.0f, 21 } // 0 pix wide
- };
- for (size_t j = 0; j < SK_ARRAY_COUNT(vertRects); ++j) {
- canvas->drawRect(vertRects[j], p);
- }
- }
- static void DrawHorizRects(SkCanvas* canvas, const SkPaint& p) {
- constexpr SkRect horizRects[] = {
- { 1, 1, 21, 5.0f }, // 4 pix high
- { 1, 8, 21, 10.0f }, // 2 pix high
- { 1, 13, 21, 14.0f }, // 1 pix high
- { 1, 17, 21, 17.5f }, // 1/2 pix high
- { 1, 21, 21, 21.25f }, // 1/4 pix high
- { 1, 25, 21, 25.125f }, // 1/8 pix high
- { 1, 29, 21, 29.0f } // 0 pix high
- };
- for (size_t j = 0; j < SK_ARRAY_COUNT(horizRects); ++j) {
- canvas->drawRect(horizRects[j], p);
- }
- }
- static void DrawSquares(SkCanvas* canvas, const SkPaint& p) {
- constexpr SkRect squares[] = {
- { 1, 1, 5.0f, 5.0f }, // 4 pix
- { 8, 8, 10.0f, 10.0f }, // 2 pix
- { 13, 13, 14.0f, 14.0f }, // 1 pix
- { 17, 17, 17.5f, 17.5f }, // 1/2 pix
- { 21, 21, 21.25f, 21.25f }, // 1/4 pix
- { 25, 25, 25.125f, 25.125f }, // 1/8 pix
- { 29, 29, 29.0f, 29.0f } // 0 pix
- };
- for (size_t j = 0; j < SK_ARRAY_COUNT(squares); ++j) {
- canvas->drawRect(squares[j], p);
- }
- }
- typedef GM INHERITED;
- };
- //////////////////////////////////////////////////////////////////////////////
- DEF_GM( return new ThinRectsGM; )
- }
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