| OLD | NEW |
| 1 /* | 1 /* |
| 2 * Copyright 2016 Google Inc. | 2 * Copyright 2016 Google Inc. |
| 3 * | 3 * |
| 4 * Use of this source code is governed by a BSD-style license that can be | 4 * Use of this source code is governed by a BSD-style license that can be |
| 5 * found in the LICENSE file. | 5 * found in the LICENSE file. |
| 6 */ | 6 */ |
| 7 | 7 |
| 8 #include <functional> | 8 #include <functional> |
| 9 #include "SkCanvas.h" | 9 #include "SkCanvas.h" |
| 10 #include "gm.h" | 10 #include "gm.h" |
| 11 | 11 |
| 12 static constexpr SkScalar kStarts[] = {0.f, 10.f, 30.f, 45.f, 90.f, 165.f, 180.f
, 270.f}; | 12 static constexpr SkScalar kStarts[] = {0.f, 10.f, 30.f, 45.f, 90.f, 165.f, 180.f
, 270.f}; |
| 13 static constexpr SkScalar kSweeps[] = {45.f, 90.f, 165.f, 180.f, 220.f, 270.f, 3
00.f, 315.f}; | 13 static constexpr SkScalar kSweeps[] = {45.f, 90.f, 165.f, 180.f, 220.f, 270.f, 3
00.f, 315.f}; |
| 14 static constexpr SkScalar kDiameter = 40.f; | 14 static constexpr SkScalar kDiameter = 40.f; |
| 15 static constexpr SkRect kRect = {0.f, 0.f, kDiameter, kDiameter}; | 15 static constexpr SkRect kRect = {0.f, 0.f, kDiameter, kDiameter}; |
| 16 static constexpr int kW = 1000; | 16 static constexpr int kW = 1000; |
| 17 static constexpr int kH = 1000; | 17 static constexpr int kH = 1000; |
| 18 static constexpr SkScalar kPad = 20.f; | 18 static constexpr SkScalar kPad = 20.f; |
| 19 | 19 |
| 20 void draw_arcs(SkCanvas* canvas, std::function<void(SkPaint*)> configureStyle) { | 20 void draw_arcs(SkCanvas* canvas, std::function<void(SkPaint*)> configureStyle) { |
| 21 // Draws grid of arcs with different start/sweep angles in red and their com
plement arcs in | 21 // Draws grid of arcs with different start/sweep angles in red and their com
plement arcs in |
| 22 // blue. | 22 // blue. |
| 23 auto drawGrid = [canvas, &configureStyle] (SkScalar x, SkScalar y, bool useC
enter, bool aa) { | 23 auto drawGrid = [canvas, &configureStyle] (SkScalar x, SkScalar y, bool useC
enter, bool aa) { |
| 24 SkPaint p0; | 24 SkPaint p0; |
| 25 p0.setColor(SK_ColorRED); | 25 p0.setColor(SK_ColorRED); |
| 26 p0.setAntiAlias(aa); | 26 p0.setAntiAlias(aa); |
| 27 // Set a reasonable stroke width that configureStyle can override. | 27 // Set a reasonable stroke width that configureStyle can override. |
| 28 p0.setStrokeWidth(15.f); | 28 p0.setStrokeWidth(15.f); |
| 29 SkPaint p1 = p0; |
| 30 p1.setColor(SK_ColorBLUE); |
| 29 // Use alpha so we see magenta on overlap between arc and its complement
. | 31 // Use alpha so we see magenta on overlap between arc and its complement
. |
| 30 p0.setAlpha(100); | 32 p0.setAlpha(100); |
| 31 SkPaint p1 = p0; | 33 p1.setAlpha(100); |
| 32 p1.setColor(SK_ColorBLUE); | |
| 33 configureStyle(&p0); | 34 configureStyle(&p0); |
| 34 configureStyle(&p1); | 35 configureStyle(&p1); |
| 35 | 36 |
| 36 canvas->save(); | 37 canvas->save(); |
| 37 canvas->translate(kPad + x, kPad + y); | 38 canvas->translate(kPad + x, kPad + y); |
| 38 for (auto start : kStarts) { | 39 for (auto start : kStarts) { |
| 39 canvas->save(); | 40 canvas->save(); |
| 40 for (auto sweep : kSweeps) { | 41 for (auto sweep : kSweeps) { |
| 41 canvas->drawArc(kRect, start, sweep, useCenter, p0); | 42 canvas->drawArc(kRect, start, sweep, useCenter, p0); |
| 42 canvas->drawArc(kRect, start, -(360.f - sweep), useCenter, p1); | 43 canvas->drawArc(kRect, start, -(360.f - sweep), useCenter, p1); |
| (...skipping 14 matching lines...) Expand all Loading... |
| 57 // Draw separators between the grids. | 58 // Draw separators between the grids. |
| 58 SkPaint linePaint; | 59 SkPaint linePaint; |
| 59 linePaint.setAntiAlias(true); | 60 linePaint.setAntiAlias(true); |
| 60 linePaint.setColor(SK_ColorBLACK); | 61 linePaint.setColor(SK_ColorBLACK); |
| 61 canvas->drawLine(kGridW, 0.f , kGridW, SkIntToScalar(kH), lineP
aint); | 62 canvas->drawLine(kGridW, 0.f , kGridW, SkIntToScalar(kH), lineP
aint); |
| 62 canvas->drawLine(0.f , kGridH, SkIntToScalar(kW), kGridH, lineP
aint); | 63 canvas->drawLine(0.f , kGridH, SkIntToScalar(kW), kGridH, lineP
aint); |
| 63 } | 64 } |
| 64 | 65 |
| 65 #define DEF_ARC_GM(name) DEF_SIMPLE_GM(circular_arcs_##name, canvas, kW, kH) | 66 #define DEF_ARC_GM(name) DEF_SIMPLE_GM(circular_arcs_##name, canvas, kW, kH) |
| 66 | 67 |
| 67 DEF_ARC_GM(circular_arcs_fill) { | 68 DEF_ARC_GM(fill) { |
| 68 auto setFill = [] (SkPaint*p) { p->setStyle(SkPaint::kFill_Style); }; | 69 auto setFill = [] (SkPaint*p) { p->setStyle(SkPaint::kFill_Style); }; |
| 69 draw_arcs(canvas, setFill); | 70 draw_arcs(canvas, setFill); |
| 70 } | 71 } |
| 71 | 72 |
| 72 DEF_ARC_GM(hairline) { | 73 DEF_ARC_GM(hairline) { |
| 73 auto setHairline = [] (SkPaint* p) { | 74 auto setHairline = [] (SkPaint* p) { |
| 74 p->setStyle(SkPaint::kStroke_Style); | 75 p->setStyle(SkPaint::kStroke_Style); |
| 75 p->setStrokeWidth(0.f); | 76 p->setStrokeWidth(0.f); |
| 76 }; | 77 }; |
| 77 draw_arcs(canvas, setHairline); | 78 draw_arcs(canvas, setHairline); |
| (...skipping 15 matching lines...) Expand all Loading... |
| 93 draw_arcs(canvas, setStroke); | 94 draw_arcs(canvas, setStroke); |
| 94 } | 95 } |
| 95 | 96 |
| 96 DEF_ARC_GM(stroke_round) { | 97 DEF_ARC_GM(stroke_round) { |
| 97 auto setStroke = [] (SkPaint* p) { | 98 auto setStroke = [] (SkPaint* p) { |
| 98 p->setStyle(SkPaint::kStroke_Style); | 99 p->setStyle(SkPaint::kStroke_Style); |
| 99 p->setStrokeCap(SkPaint::kRound_Cap); | 100 p->setStrokeCap(SkPaint::kRound_Cap); |
| 100 }; | 101 }; |
| 101 draw_arcs(canvas, setStroke); | 102 draw_arcs(canvas, setStroke); |
| 102 } | 103 } |
| OLD | NEW |