quadpaths.cpp 11 KB

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  1. /*
  2. * Copyright 2011 Google Inc.
  3. *
  4. * Use of this source code is governed by a BSD-style license that can be
  5. * found in the LICENSE file.
  6. */
  7. #include "gm/gm.h"
  8. #include "include/core/SkCanvas.h"
  9. #include "include/core/SkColor.h"
  10. #include "include/core/SkFont.h"
  11. #include "include/core/SkPaint.h"
  12. #include "include/core/SkPath.h"
  13. #include "include/core/SkRect.h"
  14. #include "include/core/SkScalar.h"
  15. #include "include/core/SkSize.h"
  16. #include "include/core/SkString.h"
  17. #include "include/core/SkTypeface.h"
  18. #include "include/core/SkTypes.h"
  19. #include "include/utils/SkRandom.h"
  20. #include "tools/ToolUtils.h"
  21. namespace skiagm {
  22. class QuadPathGM : public GM {
  23. public:
  24. QuadPathGM() {}
  25. protected:
  26. SkString onShortName() override {
  27. return SkString("quadpath");
  28. }
  29. SkISize onISize() override { return SkISize::Make(1240, 390); }
  30. void drawPath(SkPath& path,SkCanvas* canvas,SkColor color,
  31. const SkRect& clip,SkPaint::Cap cap, SkPaint::Join join,
  32. SkPaint::Style style, SkPath::FillType fill,
  33. SkScalar strokeWidth) {
  34. path.setFillType(fill);
  35. SkPaint paint;
  36. paint.setStrokeCap(cap);
  37. paint.setStrokeWidth(strokeWidth);
  38. paint.setStrokeJoin(join);
  39. paint.setColor(color);
  40. paint.setStyle(style);
  41. canvas->save();
  42. canvas->clipRect(clip);
  43. canvas->drawPath(path, paint);
  44. canvas->restore();
  45. }
  46. void onDraw(SkCanvas* canvas) override {
  47. struct FillAndName {
  48. SkPath::FillType fFill;
  49. const char* fName;
  50. };
  51. constexpr FillAndName gFills[] = {
  52. {SkPath::kWinding_FillType, "Winding"},
  53. {SkPath::kEvenOdd_FillType, "Even / Odd"},
  54. {SkPath::kInverseWinding_FillType, "Inverse Winding"},
  55. {SkPath::kInverseEvenOdd_FillType, "Inverse Even / Odd"},
  56. };
  57. struct StyleAndName {
  58. SkPaint::Style fStyle;
  59. const char* fName;
  60. };
  61. constexpr StyleAndName gStyles[] = {
  62. {SkPaint::kFill_Style, "Fill"},
  63. {SkPaint::kStroke_Style, "Stroke"},
  64. {SkPaint::kStrokeAndFill_Style, "Stroke And Fill"},
  65. };
  66. struct CapAndName {
  67. SkPaint::Cap fCap;
  68. SkPaint::Join fJoin;
  69. const char* fName;
  70. };
  71. constexpr CapAndName gCaps[] = {
  72. {SkPaint::kButt_Cap, SkPaint::kBevel_Join, "Butt"},
  73. {SkPaint::kRound_Cap, SkPaint::kRound_Join, "Round"},
  74. {SkPaint::kSquare_Cap, SkPaint::kBevel_Join, "Square"}
  75. };
  76. struct PathAndName {
  77. SkPath fPath;
  78. const char* fName;
  79. };
  80. PathAndName path;
  81. path.fPath.moveTo(25*SK_Scalar1, 10*SK_Scalar1);
  82. path.fPath.quadTo(50*SK_Scalar1, 20*SK_Scalar1,
  83. 75*SK_Scalar1, 10*SK_Scalar1);
  84. path.fName = "moveTo-quad";
  85. SkPaint titlePaint;
  86. SkFont font(ToolUtils::create_portable_typeface(), 15);
  87. SkFont labelFont(ToolUtils::create_portable_typeface(), 10);
  88. const char title[] = "Quad Drawn Into Rectangle Clips With "
  89. "Indicated Style, Fill and Linecaps, with stroke width 10";
  90. canvas->drawString(title, 20.0f, 20.0f, font, titlePaint);
  91. SkRandom rand;
  92. SkRect rect = SkRect::MakeWH(100*SK_Scalar1, 30*SK_Scalar1);
  93. canvas->save();
  94. canvas->translate(10 * SK_Scalar1, 30 * SK_Scalar1);
  95. canvas->save();
  96. for (size_t cap = 0; cap < SK_ARRAY_COUNT(gCaps); ++cap) {
  97. if (0 < cap) {
  98. canvas->translate((rect.width() + 40 * SK_Scalar1) * SK_ARRAY_COUNT(gStyles), 0);
  99. }
  100. canvas->save();
  101. for (size_t fill = 0; fill < SK_ARRAY_COUNT(gFills); ++fill) {
  102. if (0 < fill) {
  103. canvas->translate(0, rect.height() + 40 * SK_Scalar1);
  104. }
  105. canvas->save();
  106. for (size_t style = 0; style < SK_ARRAY_COUNT(gStyles); ++style) {
  107. if (0 < style) {
  108. canvas->translate(rect.width() + 40 * SK_Scalar1, 0);
  109. }
  110. SkColor color = ToolUtils::color_to_565(0xff007000);
  111. this->drawPath(path.fPath, canvas, color, rect,
  112. gCaps[cap].fCap, gCaps[cap].fJoin, gStyles[style].fStyle,
  113. gFills[fill].fFill, SK_Scalar1*10);
  114. SkPaint rectPaint;
  115. rectPaint.setColor(SK_ColorBLACK);
  116. rectPaint.setStyle(SkPaint::kStroke_Style);
  117. rectPaint.setStrokeWidth(-1);
  118. rectPaint.setAntiAlias(true);
  119. canvas->drawRect(rect, rectPaint);
  120. SkPaint labelPaint;
  121. labelPaint.setColor(color);
  122. canvas->drawString(gStyles[style].fName, 0, rect.height() + 12.0f,
  123. labelFont, labelPaint);
  124. canvas->drawString(gFills[fill].fName, 0, rect.height() + 24.0f,
  125. labelFont, labelPaint);
  126. canvas->drawString(gCaps[cap].fName, 0, rect.height() + 36.0f,
  127. labelFont, labelPaint);
  128. }
  129. canvas->restore();
  130. }
  131. canvas->restore();
  132. }
  133. canvas->restore();
  134. canvas->restore();
  135. }
  136. private:
  137. typedef GM INHERITED;
  138. };
  139. class QuadClosePathGM : public GM {
  140. public:
  141. QuadClosePathGM() {}
  142. protected:
  143. SkString onShortName() override {
  144. return SkString("quadclosepath");
  145. }
  146. SkISize onISize() override { return SkISize::Make(1240, 390); }
  147. void drawPath(SkPath& path,SkCanvas* canvas,SkColor color,
  148. const SkRect& clip,SkPaint::Cap cap, SkPaint::Join join,
  149. SkPaint::Style style, SkPath::FillType fill,
  150. SkScalar strokeWidth) {
  151. path.setFillType(fill);
  152. SkPaint paint;
  153. paint.setStrokeCap(cap);
  154. paint.setStrokeWidth(strokeWidth);
  155. paint.setStrokeJoin(join);
  156. paint.setColor(color);
  157. paint.setStyle(style);
  158. canvas->save();
  159. canvas->clipRect(clip);
  160. canvas->drawPath(path, paint);
  161. canvas->restore();
  162. }
  163. void onDraw(SkCanvas* canvas) override {
  164. struct FillAndName {
  165. SkPath::FillType fFill;
  166. const char* fName;
  167. };
  168. constexpr FillAndName gFills[] = {
  169. {SkPath::kWinding_FillType, "Winding"},
  170. {SkPath::kEvenOdd_FillType, "Even / Odd"},
  171. {SkPath::kInverseWinding_FillType, "Inverse Winding"},
  172. {SkPath::kInverseEvenOdd_FillType, "Inverse Even / Odd"},
  173. };
  174. struct StyleAndName {
  175. SkPaint::Style fStyle;
  176. const char* fName;
  177. };
  178. constexpr StyleAndName gStyles[] = {
  179. {SkPaint::kFill_Style, "Fill"},
  180. {SkPaint::kStroke_Style, "Stroke"},
  181. {SkPaint::kStrokeAndFill_Style, "Stroke And Fill"},
  182. };
  183. struct CapAndName {
  184. SkPaint::Cap fCap;
  185. SkPaint::Join fJoin;
  186. const char* fName;
  187. };
  188. constexpr CapAndName gCaps[] = {
  189. {SkPaint::kButt_Cap, SkPaint::kBevel_Join, "Butt"},
  190. {SkPaint::kRound_Cap, SkPaint::kRound_Join, "Round"},
  191. {SkPaint::kSquare_Cap, SkPaint::kBevel_Join, "Square"}
  192. };
  193. struct PathAndName {
  194. SkPath fPath;
  195. const char* fName;
  196. };
  197. PathAndName path;
  198. path.fPath.moveTo(25*SK_Scalar1, 10*SK_Scalar1);
  199. path.fPath.quadTo(50*SK_Scalar1, 20*SK_Scalar1,
  200. 75*SK_Scalar1, 10*SK_Scalar1);
  201. path.fPath.close();
  202. path.fName = "moveTo-quad-close";
  203. SkPaint titlePaint;
  204. SkFont font(ToolUtils::create_portable_typeface(), 15);
  205. SkFont labelFont(ToolUtils::create_portable_typeface(), 10);
  206. const char title[] = "Quad Closed Drawn Into Rectangle Clips With "
  207. "Indicated Style, Fill and Linecaps, with stroke width 10";
  208. canvas->drawString(title, 20.0f, 20.0f, font, titlePaint);
  209. SkRandom rand;
  210. SkRect rect = SkRect::MakeWH(100*SK_Scalar1, 30*SK_Scalar1);
  211. canvas->save();
  212. canvas->translate(10 * SK_Scalar1, 30 * SK_Scalar1);
  213. canvas->save();
  214. for (size_t cap = 0; cap < SK_ARRAY_COUNT(gCaps); ++cap) {
  215. if (0 < cap) {
  216. canvas->translate((rect.width() + 40 * SK_Scalar1) * SK_ARRAY_COUNT(gStyles), 0);
  217. }
  218. canvas->save();
  219. for (size_t fill = 0; fill < SK_ARRAY_COUNT(gFills); ++fill) {
  220. if (0 < fill) {
  221. canvas->translate(0, rect.height() + 40 * SK_Scalar1);
  222. }
  223. canvas->save();
  224. for (size_t style = 0; style < SK_ARRAY_COUNT(gStyles); ++style) {
  225. if (0 < style) {
  226. canvas->translate(rect.width() + 40 * SK_Scalar1, 0);
  227. }
  228. SkColor color = ToolUtils::color_to_565(0xff007000);
  229. this->drawPath(path.fPath, canvas, color, rect,
  230. gCaps[cap].fCap, gCaps[cap].fJoin, gStyles[style].fStyle,
  231. gFills[fill].fFill, SK_Scalar1*10);
  232. SkPaint rectPaint;
  233. rectPaint.setColor(SK_ColorBLACK);
  234. rectPaint.setStyle(SkPaint::kStroke_Style);
  235. rectPaint.setStrokeWidth(-1);
  236. rectPaint.setAntiAlias(true);
  237. canvas->drawRect(rect, rectPaint);
  238. SkPaint labelPaint;
  239. labelPaint.setColor(color);
  240. canvas->drawString(gStyles[style].fName, 0, rect.height() + 12.0f,
  241. labelFont, labelPaint);
  242. canvas->drawString(gFills[fill].fName, 0, rect.height() + 24.0f,
  243. labelFont, labelPaint);
  244. canvas->drawString(gCaps[cap].fName, 0, rect.height() + 36.0f,
  245. labelFont, labelPaint);
  246. }
  247. canvas->restore();
  248. }
  249. canvas->restore();
  250. }
  251. canvas->restore();
  252. canvas->restore();
  253. }
  254. private:
  255. typedef GM INHERITED;
  256. };
  257. //////////////////////////////////////////////////////////////////////////////
  258. DEF_GM( return new QuadPathGM; )
  259. DEF_GM( return new QuadClosePathGM; )
  260. }