fd0ec2c76a
This will be used in Blink to accommodate matrices that contain rotation or shearing. This is a generalization of SkResizeImageFilter, so I've replaced all uses of SkResizeImageFilter in Skia. (It might be easier to review by diffing it with SkResizeImageFilter, too.) R=reed@google.com Review URL: https://codereview.chromium.org/211103006 git-svn-id: http://skia.googlecode.com/svn/trunk@13941 2bbb7eff-a529-9590-31e7-b0007b416f81
84 lines
2.4 KiB
C++
84 lines
2.4 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.h"
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#include "SkMatrixImageFilter.h"
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#include "SkRandom.h"
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#define WIDTH 640
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#define HEIGHT 480
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#define RESIZE_FACTOR SkIntToScalar(2)
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namespace skiagm {
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class ImageResizeTiledGM : public GM {
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public:
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ImageResizeTiledGM() {
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}
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protected:
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virtual SkString onShortName() SK_OVERRIDE {
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return SkString("imageresizetiled");
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}
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virtual SkISize onISize() SK_OVERRIDE {
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return make_isize(WIDTH, HEIGHT);
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}
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virtual uint32_t onGetFlags() const SK_OVERRIDE {
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return kSkipTiled_Flag;
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}
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virtual void onDraw(SkCanvas* canvas) SK_OVERRIDE {
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SkPaint paint;
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SkMatrix matrix;
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matrix.setScale(RESIZE_FACTOR, RESIZE_FACTOR);
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SkAutoTUnref<SkImageFilter> imageFilter(
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SkMatrixImageFilter::Create(matrix, SkPaint::kNone_FilterLevel));
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paint.setImageFilter(imageFilter.get());
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const SkScalar tile_size = SkIntToScalar(100);
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SkRect bounds;
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canvas->getClipBounds(&bounds);
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for (SkScalar y = 0; y < HEIGHT; y += tile_size) {
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for (SkScalar x = 0; x < WIDTH; x += tile_size) {
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canvas->save();
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canvas->clipRect(SkRect::MakeXYWH(x, y, tile_size, tile_size));
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canvas->scale(SkScalarInvert(RESIZE_FACTOR),
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SkScalarInvert(RESIZE_FACTOR));
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canvas->saveLayer(NULL, &paint);
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const char* str[] = {
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"The quick",
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"brown fox",
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"jumped over",
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"the lazy dog.",
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};
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SkPaint textPaint;
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textPaint.setAntiAlias(true);
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textPaint.setTextSize(SkIntToScalar(100));
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int posY = 0;
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for (unsigned i = 0; i < SK_ARRAY_COUNT(str); i++) {
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posY += 100;
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canvas->drawText(str[i], strlen(str[i]), SkIntToScalar(0),
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SkIntToScalar(posY), textPaint);
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}
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canvas->restore();
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canvas->restore();
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}
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}
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}
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private:
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typedef GM INHERITED;
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};
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//////////////////////////////////////////////////////////////////////////////
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DEF_GM(return new ImageResizeTiledGM(); )
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}
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