| /* |
| * 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.h" |
| #include "SkDisplacementMapEffect.h" |
| #include "SkBitmapSource.h" |
| |
| namespace skiagm { |
| |
| class DisplacementMapGM : public GM { |
| public: |
| DisplacementMapGM() : fInitialized(false) { |
| this->setBGColor(0xFF000000); |
| } |
| |
| protected: |
| virtual SkString onShortName() { |
| return SkString("displacement"); |
| } |
| |
| void make_bitmaps() { |
| make_bitmap(); |
| make_checkerboard(&fCheckerboard, 80, 80); |
| make_checkerboard(&fSmall, 64, 64); |
| make_checkerboard(&fLarge, 96, 96); |
| make_checkerboard(&fLargeW, 96, 64); |
| make_checkerboard(&fLargeH, 64, 96); |
| } |
| |
| void make_bitmap() { |
| fBitmap.allocN32Pixels(80, 80); |
| SkBitmapDevice device(fBitmap); |
| SkCanvas canvas(&device); |
| canvas.clear(0x00000000); |
| SkPaint paint; |
| paint.setAntiAlias(true); |
| paint.setColor(0xFF884422); |
| paint.setTextSize(SkIntToScalar(96)); |
| const char* str = "g"; |
| canvas.drawText(str, strlen(str), SkIntToScalar(15), SkIntToScalar(55), paint); |
| } |
| |
| void make_checkerboard(SkBitmap* bitmap, int w, int h) { |
| bitmap->allocN32Pixels(w, h); |
| SkBitmapDevice device(*bitmap); |
| SkCanvas canvas(&device); |
| canvas.clear(0x00000000); |
| SkPaint darkPaint; |
| darkPaint.setColor(0xFF804020); |
| SkPaint lightPaint; |
| lightPaint.setColor(0xFF244484); |
| for (int y = 0; y < h; y += 16) { |
| for (int x = 0; x < w; x += 16) { |
| canvas.save(); |
| canvas.translate(SkIntToScalar(x), SkIntToScalar(y)); |
| canvas.drawRect(SkRect::MakeXYWH(0, 0, 8, 8), darkPaint); |
| canvas.drawRect(SkRect::MakeXYWH(8, 0, 8, 8), lightPaint); |
| canvas.drawRect(SkRect::MakeXYWH(0, 8, 8, 8), lightPaint); |
| canvas.drawRect(SkRect::MakeXYWH(8, 8, 8, 8), darkPaint); |
| canvas.restore(); |
| } |
| } |
| } |
| |
| virtual SkISize onISize() { |
| return make_isize(500, 500); |
| } |
| |
| void drawClippedBitmap(SkCanvas* canvas, int x, int y, const SkPaint& paint) { |
| canvas->save(); |
| canvas->translate(SkIntToScalar(x), SkIntToScalar(y)); |
| canvas->clipRect(SkRect::MakeWH(SkIntToScalar(fBitmap.width()), SkIntToScalar(fBitmap.height()))); |
| canvas->drawBitmap(fBitmap, 0, 0, &paint); |
| canvas->restore(); |
| } |
| |
| virtual void onDraw(SkCanvas* canvas) { |
| if (!fInitialized) { |
| make_bitmaps(); |
| fInitialized = true; |
| } |
| canvas->clear(0x00000000); |
| SkPaint paint; |
| SkAutoTUnref<SkImageFilter> displ(SkNEW_ARGS(SkBitmapSource, (fCheckerboard))); |
| paint.setImageFilter(SkNEW_ARGS(SkDisplacementMapEffect, |
| (SkDisplacementMapEffect::kR_ChannelSelectorType, |
| SkDisplacementMapEffect::kG_ChannelSelectorType, 0.0f, displ)))->unref(); |
| drawClippedBitmap(canvas, 0, 0, paint); |
| paint.setImageFilter(SkNEW_ARGS(SkDisplacementMapEffect, |
| (SkDisplacementMapEffect::kB_ChannelSelectorType, |
| SkDisplacementMapEffect::kA_ChannelSelectorType, 16.0f, displ)))->unref(); |
| drawClippedBitmap(canvas, 100, 0, paint); |
| paint.setImageFilter(SkNEW_ARGS(SkDisplacementMapEffect, |
| (SkDisplacementMapEffect::kR_ChannelSelectorType, |
| SkDisplacementMapEffect::kB_ChannelSelectorType, 32.0f, displ)))->unref(); |
| drawClippedBitmap(canvas, 200, 0, paint); |
| paint.setImageFilter(SkNEW_ARGS(SkDisplacementMapEffect, |
| (SkDisplacementMapEffect::kG_ChannelSelectorType, |
| SkDisplacementMapEffect::kA_ChannelSelectorType, 48.0f, displ)))->unref(); |
| drawClippedBitmap(canvas, 300, 0, paint); |
| paint.setImageFilter(SkNEW_ARGS(SkDisplacementMapEffect, |
| (SkDisplacementMapEffect::kR_ChannelSelectorType, |
| SkDisplacementMapEffect::kA_ChannelSelectorType, 64.0f, displ)))->unref(); |
| drawClippedBitmap(canvas, 400, 0, paint); |
| |
| paint.setImageFilter(SkNEW_ARGS(SkDisplacementMapEffect, |
| (SkDisplacementMapEffect::kR_ChannelSelectorType, |
| SkDisplacementMapEffect::kG_ChannelSelectorType, 40.0f, displ)))->unref(); |
| drawClippedBitmap(canvas, 0, 100, paint); |
| paint.setImageFilter(SkNEW_ARGS(SkDisplacementMapEffect, |
| (SkDisplacementMapEffect::kB_ChannelSelectorType, |
| SkDisplacementMapEffect::kA_ChannelSelectorType, 40.0f, displ)))->unref(); |
| drawClippedBitmap(canvas, 100, 100, paint); |
| paint.setImageFilter(SkNEW_ARGS(SkDisplacementMapEffect, |
| (SkDisplacementMapEffect::kR_ChannelSelectorType, |
| SkDisplacementMapEffect::kB_ChannelSelectorType, 40.0f, displ)))->unref(); |
| drawClippedBitmap(canvas, 200, 100, paint); |
| paint.setImageFilter(SkNEW_ARGS(SkDisplacementMapEffect, |
| (SkDisplacementMapEffect::kG_ChannelSelectorType, |
| SkDisplacementMapEffect::kA_ChannelSelectorType, 40.0f, displ)))->unref(); |
| drawClippedBitmap(canvas, 300, 100, paint); |
| paint.setImageFilter(SkNEW_ARGS(SkDisplacementMapEffect, |
| (SkDisplacementMapEffect::kR_ChannelSelectorType, |
| SkDisplacementMapEffect::kA_ChannelSelectorType, 40.0f, displ)))->unref(); |
| drawClippedBitmap(canvas, 400, 100, paint); |
| |
| SkImageFilter::CropRect cropRect(SkRect::MakeXYWH(30, 30, 40, 40)); |
| paint.setImageFilter(SkNEW_ARGS(SkDisplacementMapEffect, |
| (SkDisplacementMapEffect::kR_ChannelSelectorType, |
| SkDisplacementMapEffect::kG_ChannelSelectorType, |
| 0.0f, displ, NULL, &cropRect)))->unref(); |
| drawClippedBitmap(canvas, 0, 200, paint); |
| paint.setImageFilter(SkNEW_ARGS(SkDisplacementMapEffect, |
| (SkDisplacementMapEffect::kB_ChannelSelectorType, |
| SkDisplacementMapEffect::kA_ChannelSelectorType, |
| 16.0f, displ, NULL, &cropRect)))->unref(); |
| drawClippedBitmap(canvas, 100, 200, paint); |
| paint.setImageFilter(SkNEW_ARGS(SkDisplacementMapEffect, |
| (SkDisplacementMapEffect::kR_ChannelSelectorType, |
| SkDisplacementMapEffect::kB_ChannelSelectorType, |
| 32.0f, displ, NULL, &cropRect)))->unref(); |
| drawClippedBitmap(canvas, 200, 200, paint); |
| paint.setImageFilter(SkNEW_ARGS(SkDisplacementMapEffect, |
| (SkDisplacementMapEffect::kG_ChannelSelectorType, |
| SkDisplacementMapEffect::kA_ChannelSelectorType, |
| 48.0f, displ, NULL, &cropRect)))->unref(); |
| drawClippedBitmap(canvas, 300, 200, paint); |
| paint.setImageFilter(SkNEW_ARGS(SkDisplacementMapEffect, |
| (SkDisplacementMapEffect::kR_ChannelSelectorType, |
| SkDisplacementMapEffect::kA_ChannelSelectorType, |
| 64.0f, displ, NULL, &cropRect)))->unref(); |
| drawClippedBitmap(canvas, 400, 200, paint); |
| |
| paint.setImageFilter(SkNEW_ARGS(SkDisplacementMapEffect, |
| (SkDisplacementMapEffect::kR_ChannelSelectorType, |
| SkDisplacementMapEffect::kG_ChannelSelectorType, |
| 40.0f, displ, NULL, &cropRect)))->unref(); |
| drawClippedBitmap(canvas, 0, 300, paint); |
| paint.setImageFilter(SkNEW_ARGS(SkDisplacementMapEffect, |
| (SkDisplacementMapEffect::kB_ChannelSelectorType, |
| SkDisplacementMapEffect::kA_ChannelSelectorType, |
| 40.0f, displ, NULL, &cropRect)))->unref(); |
| drawClippedBitmap(canvas, 100, 300, paint); |
| paint.setImageFilter(SkNEW_ARGS(SkDisplacementMapEffect, |
| (SkDisplacementMapEffect::kR_ChannelSelectorType, |
| SkDisplacementMapEffect::kB_ChannelSelectorType, |
| 40.0f, displ, NULL, &cropRect)))->unref(); |
| drawClippedBitmap(canvas, 200, 300, paint); |
| paint.setImageFilter(SkNEW_ARGS(SkDisplacementMapEffect, |
| (SkDisplacementMapEffect::kG_ChannelSelectorType, |
| SkDisplacementMapEffect::kA_ChannelSelectorType, |
| 40.0f, displ, NULL, &cropRect)))->unref(); |
| drawClippedBitmap(canvas, 300, 300, paint); |
| paint.setImageFilter(SkNEW_ARGS(SkDisplacementMapEffect, |
| (SkDisplacementMapEffect::kR_ChannelSelectorType, |
| SkDisplacementMapEffect::kA_ChannelSelectorType, |
| 40.0f, displ, NULL, &cropRect)))->unref(); |
| drawClippedBitmap(canvas, 400, 300, paint); |
| |
| // Tests for images of different sizes |
| displ.reset(SkNEW_ARGS(SkBitmapSource, (fSmall))); |
| paint.setImageFilter(SkNEW_ARGS(SkDisplacementMapEffect, |
| (SkDisplacementMapEffect::kR_ChannelSelectorType, |
| SkDisplacementMapEffect::kG_ChannelSelectorType, |
| 40.0f, displ)))->unref(); |
| drawClippedBitmap(canvas, 0, 400, paint); |
| displ.reset(SkNEW_ARGS(SkBitmapSource, (fLarge))); |
| paint.setImageFilter(SkNEW_ARGS(SkDisplacementMapEffect, |
| (SkDisplacementMapEffect::kB_ChannelSelectorType, |
| SkDisplacementMapEffect::kA_ChannelSelectorType, |
| 40.0f, displ)))->unref(); |
| drawClippedBitmap(canvas, 100, 400, paint); |
| displ.reset(SkNEW_ARGS(SkBitmapSource, (fLargeW))); |
| paint.setImageFilter(SkNEW_ARGS(SkDisplacementMapEffect, |
| (SkDisplacementMapEffect::kR_ChannelSelectorType, |
| SkDisplacementMapEffect::kB_ChannelSelectorType, |
| 40.0f, displ)))->unref(); |
| drawClippedBitmap(canvas, 200, 400, paint); |
| displ.reset(SkNEW_ARGS(SkBitmapSource, (fLargeH))); |
| paint.setImageFilter(SkNEW_ARGS(SkDisplacementMapEffect, |
| (SkDisplacementMapEffect::kG_ChannelSelectorType, |
| SkDisplacementMapEffect::kA_ChannelSelectorType, |
| 40.0f, displ)))->unref(); |
| drawClippedBitmap(canvas, 300, 400, paint); |
| |
| // Test for no given displacement input. In this case, both displacement |
| // and color should use the same bitmap, given to SkCanvas::drawBitmap() |
| // as an input argument. |
| paint.setImageFilter(SkNEW_ARGS(SkDisplacementMapEffect, |
| (SkDisplacementMapEffect::kG_ChannelSelectorType, |
| SkDisplacementMapEffect::kA_ChannelSelectorType, |
| 40.0f, NULL)))->unref(); |
| drawClippedBitmap(canvas, 400, 400, paint); |
| } |
| |
| private: |
| typedef GM INHERITED; |
| SkBitmap fBitmap, fCheckerboard, fSmall, fLarge, fLargeW, fLargeH; |
| bool fInitialized; |
| }; |
| |
| ////////////////////////////////////////////////////////////////////////////// |
| |
| static GM* MyFactory(void*) { return new DisplacementMapGM; } |
| static GMRegistry reg(MyFactory); |
| |
| } |