imagefilterscropped.cpp 6.9 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/SkBitmap.h"
  9. #include "include/core/SkBlendMode.h"
  10. #include "include/core/SkCanvas.h"
  11. #include "include/core/SkColor.h"
  12. #include "include/core/SkColorFilter.h"
  13. #include "include/core/SkFont.h"
  14. #include "include/core/SkImageFilter.h"
  15. #include "include/core/SkPaint.h"
  16. #include "include/core/SkRect.h"
  17. #include "include/core/SkRefCnt.h"
  18. #include "include/core/SkScalar.h"
  19. #include "include/core/SkSize.h"
  20. #include "include/core/SkString.h"
  21. #include "include/core/SkTypeface.h"
  22. #include "include/core/SkTypes.h"
  23. #include "include/effects/SkBlurImageFilter.h"
  24. #include "include/effects/SkColorFilterImageFilter.h"
  25. #include "include/effects/SkMergeImageFilter.h"
  26. #include "include/effects/SkMorphologyImageFilter.h"
  27. #include "include/effects/SkOffsetImageFilter.h"
  28. #include "include/utils/SkTextUtils.h"
  29. #include "tools/ToolUtils.h"
  30. #include <utility>
  31. ///////////////////////////////////////////////////////////////////////////////
  32. static void draw_paint(SkCanvas* canvas, const SkRect& r, sk_sp<SkImageFilter> imf) {
  33. SkPaint paint;
  34. paint.setImageFilter(std::move(imf));
  35. paint.setColor(SK_ColorBLACK);
  36. canvas->save();
  37. canvas->clipRect(r);
  38. canvas->drawPaint(paint);
  39. canvas->restore();
  40. }
  41. static void draw_path(SkCanvas* canvas, const SkRect& r, sk_sp<SkImageFilter> imf) {
  42. SkPaint paint;
  43. paint.setColor(SK_ColorMAGENTA);
  44. paint.setImageFilter(std::move(imf));
  45. paint.setAntiAlias(true);
  46. canvas->drawCircle(r.centerX(), r.centerY(), r.width()*2/5, paint);
  47. }
  48. static void draw_text(SkCanvas* canvas, const SkRect& r, sk_sp<SkImageFilter> imf) {
  49. SkPaint paint;
  50. paint.setImageFilter(std::move(imf));
  51. paint.setColor(SK_ColorGREEN);
  52. SkFont font(ToolUtils::create_portable_typeface(), r.height() / 2);
  53. SkTextUtils::DrawString(canvas, "Text", r.centerX(), r.centerY(), font, paint, SkTextUtils::kCenter_Align);
  54. }
  55. static void draw_bitmap(SkCanvas* canvas, const SkRect& r, sk_sp<SkImageFilter> imf) {
  56. SkPaint paint;
  57. SkIRect bounds;
  58. r.roundOut(&bounds);
  59. SkBitmap bm;
  60. bm.allocN32Pixels(bounds.width(), bounds.height());
  61. bm.eraseColor(SK_ColorTRANSPARENT);
  62. SkCanvas c(bm);
  63. draw_path(&c, r, nullptr);
  64. paint.setImageFilter(std::move(imf));
  65. canvas->drawBitmap(bm, 0, 0, &paint);
  66. }
  67. ///////////////////////////////////////////////////////////////////////////////
  68. class ImageFiltersCroppedGM : public skiagm::GM {
  69. public:
  70. ImageFiltersCroppedGM () {}
  71. protected:
  72. SkString onShortName() override {
  73. return SkString("imagefilterscropped");
  74. }
  75. SkISize onISize() override { return SkISize::Make(400, 960); }
  76. void make_checkerboard() {
  77. fCheckerboard.allocN32Pixels(80, 80);
  78. SkCanvas canvas(fCheckerboard);
  79. canvas.clear(SK_ColorTRANSPARENT);
  80. SkPaint darkPaint;
  81. darkPaint.setColor(0xFF404040);
  82. SkPaint lightPaint;
  83. lightPaint.setColor(0xFFA0A0A0);
  84. for (int y = 0; y < 80; y += 16) {
  85. for (int x = 0; x < 80; x += 16) {
  86. canvas.save();
  87. canvas.translate(SkIntToScalar(x), SkIntToScalar(y));
  88. canvas.drawRect(SkRect::MakeXYWH(0, 0, 8, 8), darkPaint);
  89. canvas.drawRect(SkRect::MakeXYWH(8, 0, 8, 8), lightPaint);
  90. canvas.drawRect(SkRect::MakeXYWH(0, 8, 8, 8), lightPaint);
  91. canvas.drawRect(SkRect::MakeXYWH(8, 8, 8, 8), darkPaint);
  92. canvas.restore();
  93. }
  94. }
  95. }
  96. void draw_frame(SkCanvas* canvas, const SkRect& r) {
  97. SkPaint paint;
  98. paint.setStyle(SkPaint::kStroke_Style);
  99. paint.setColor(SK_ColorRED);
  100. canvas->drawRect(r, paint);
  101. }
  102. void onOnceBeforeDraw() override {
  103. make_checkerboard();
  104. }
  105. void onDraw(SkCanvas* canvas) override {
  106. void (*drawProc[])(SkCanvas*, const SkRect&, sk_sp<SkImageFilter>) = {
  107. draw_bitmap, draw_path, draw_paint, draw_text
  108. };
  109. sk_sp<SkColorFilter> cf(SkColorFilters::Blend(SK_ColorBLUE,
  110. SkBlendMode::kSrcIn));
  111. SkImageFilter::CropRect cropRect(SkRect::Make(SkIRect::MakeXYWH(10, 10, 44, 44)),
  112. SkImageFilter::CropRect::kHasAll_CropEdge);
  113. SkImageFilter::CropRect bogusRect(SkRect::Make(SkIRect::MakeXYWH(-100, -100, 10, 10)),
  114. SkImageFilter::CropRect::kHasAll_CropEdge);
  115. sk_sp<SkImageFilter> offset(SkOffsetImageFilter::Make(SkIntToScalar(-10),
  116. SkIntToScalar(-10),
  117. nullptr));
  118. sk_sp<SkImageFilter> cfOffset(SkColorFilterImageFilter::Make(cf, std::move(offset)));
  119. sk_sp<SkImageFilter> erodeX(SkErodeImageFilter::Make(8, 0, nullptr, &cropRect));
  120. sk_sp<SkImageFilter> erodeY(SkErodeImageFilter::Make(0, 8, nullptr, &cropRect));
  121. sk_sp<SkImageFilter> filters[] = {
  122. nullptr,
  123. SkColorFilterImageFilter::Make(cf, nullptr, &cropRect),
  124. SkBlurImageFilter::Make(0.0f, 0.0f, nullptr, &cropRect),
  125. SkBlurImageFilter::Make(1.0f, 1.0f, nullptr, &cropRect),
  126. SkBlurImageFilter::Make(8.0f, 0.0f, nullptr, &cropRect),
  127. SkBlurImageFilter::Make(0.0f, 8.0f, nullptr, &cropRect),
  128. SkBlurImageFilter::Make(8.0f, 8.0f, nullptr, &cropRect),
  129. SkErodeImageFilter::Make(1, 1, nullptr, &cropRect),
  130. SkErodeImageFilter::Make(8, 0, std::move(erodeY), &cropRect),
  131. SkErodeImageFilter::Make(0, 8, std::move(erodeX), &cropRect),
  132. SkErodeImageFilter::Make(8, 8, nullptr, &cropRect),
  133. SkMergeImageFilter::Make(nullptr,
  134. std::move(cfOffset),
  135. &cropRect),
  136. SkBlurImageFilter::Make(8.0f, 8.0f, nullptr, &bogusRect),
  137. SkColorFilterImageFilter::Make(cf, nullptr, &bogusRect),
  138. };
  139. SkRect r = SkRect::MakeWH(SkIntToScalar(64), SkIntToScalar(64));
  140. SkScalar MARGIN = SkIntToScalar(16);
  141. SkScalar DX = r.width() + MARGIN;
  142. SkScalar DY = r.height() + MARGIN;
  143. canvas->translate(MARGIN, MARGIN);
  144. for (size_t j = 0; j < SK_ARRAY_COUNT(drawProc); ++j) {
  145. canvas->save();
  146. for (size_t i = 0; i < SK_ARRAY_COUNT(filters); ++i) {
  147. SkPaint paint;
  148. canvas->drawBitmap(fCheckerboard, 0, 0);
  149. drawProc[j](canvas, r, filters[i]);
  150. canvas->translate(0, DY);
  151. }
  152. canvas->restore();
  153. canvas->translate(DX, 0);
  154. }
  155. }
  156. private:
  157. SkBitmap fCheckerboard;
  158. typedef GM INHERITED;
  159. };
  160. ///////////////////////////////////////////////////////////////////////////////
  161. DEF_GM( return new ImageFiltersCroppedGM; )