c82ab0839f
Change-Id: I67d1a464618f1a54f4e3bd4e1409b1d91a90e66a Reviewed-on: https://skia-review.googlesource.com/c/skia/+/429336 Reviewed-by: Mike Reed <reed@google.com> Commit-Queue: Mike Reed <reed@google.com>
63 lines
2.3 KiB
C++
63 lines
2.3 KiB
C++
/*
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* Copyright 2014 Google Inc.
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*
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#include "gm/gm.h"
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#include "include/core/SkBitmap.h"
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#include "include/core/SkCanvas.h"
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#include "include/core/SkColor.h"
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#include "include/core/SkImage.h"
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#include "include/core/SkMatrix.h"
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#include "include/core/SkPaint.h"
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#include "include/core/SkRect.h"
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#include "include/core/SkScalar.h"
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#include "include/effects/SkImageFilters.h"
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static void draw(SkCanvas* canvas, const SkRect& rect, const SkBitmap& bitmap,
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const SkMatrix& matrix, const SkSamplingOptions& sampling) {
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SkPaint paint;
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paint.setImageFilter(SkImageFilters::MatrixTransform(matrix, sampling, nullptr));
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canvas->saveLayer(&rect, &paint);
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canvas->drawImage(bitmap.asImage(), 0, 0, sampling);
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canvas->restore();
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}
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static void make_checkerboard(SkBitmap* bitmap) {
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bitmap->allocN32Pixels(64, 64);
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SkCanvas canvas(*bitmap);
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SkPaint darkPaint;
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darkPaint.setColor(0xFF404040);
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SkPaint lightPaint;
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lightPaint.setColor(0xFFA0A0A0);
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for (int y = 0; y < 64; y += 32) {
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for (int x = 0; x < 64; x += 32) {
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canvas.save();
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canvas.translate(SkIntToScalar(x), SkIntToScalar(y));
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canvas.drawRect(SkRect::MakeXYWH(0, 0, 16, 16), darkPaint);
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canvas.drawRect(SkRect::MakeXYWH(16, 0, 16, 16), lightPaint);
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canvas.drawRect(SkRect::MakeXYWH(0, 16, 16, 16), lightPaint);
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canvas.drawRect(SkRect::MakeXYWH(16, 16, 16, 16), darkPaint);
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canvas.restore();
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}
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}
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}
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DEF_SIMPLE_GM_BG(matriximagefilter, canvas, 420, 100, SK_ColorBLACK) {
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SkMatrix matrix;
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SkScalar margin = SkIntToScalar(10);
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matrix.setSkew(SkDoubleToScalar(0.5), SkDoubleToScalar(0.2));
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SkBitmap checkerboard;
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make_checkerboard(&checkerboard);
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SkRect srcRect = SkRect::MakeWH(96, 96);
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canvas->translate(margin, margin);
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draw(canvas, srcRect, checkerboard, matrix, SkSamplingOptions());
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canvas->translate(srcRect.width() + margin, 0);
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draw(canvas, srcRect, checkerboard, matrix, SkSamplingOptions(SkFilterMode::kLinear));
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}
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