eb9a46cbbb
This is an intermediate api, but might help us quickly get to a point where no one is creating bitmaps in a 2-step process (setConfig + alloc). BUG=skia: R=halcanary@google.com Review URL: https://codereview.chromium.org/140593005 git-svn-id: http://skia.googlecode.com/svn/trunk@13182 2bbb7eff-a529-9590-31e7-b0007b416f81
115 lines
3.7 KiB
C++
115 lines
3.7 KiB
C++
/*
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* Copyright 2013 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 "SkTileImageFilter.h"
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#include "SkBitmapSource.h"
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#define WIDTH 400
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#define HEIGHT 100
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#define MARGIN 12
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namespace skiagm {
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class TileImageFilterGM : public GM {
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public:
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TileImageFilterGM() : fInitialized(false) {
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this->setBGColor(0xFF000000);
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}
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protected:
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virtual SkString onShortName() {
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return SkString("tileimagefilter");
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}
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void make_bitmap() {
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fBitmap.allocN32Pixels(80, 80);
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SkBitmapDevice device(fBitmap);
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SkCanvas canvas(&device);
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canvas.clear(0xFF000000);
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SkPaint paint;
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paint.setAntiAlias(true);
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paint.setColor(0xD000D000);
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paint.setTextSize(SkIntToScalar(96));
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const char* str = "e";
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canvas.drawText(str, strlen(str), SkIntToScalar(15), SkIntToScalar(65), paint);
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}
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void make_checkerboard() {
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fCheckerboard.allocN32Pixels(80, 80);
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SkBitmapDevice device(fCheckerboard);
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SkCanvas canvas(&device);
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canvas.clear(0x00000000);
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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 < 80; y += 16) {
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for (int x = 0; x < 80; x += 16) {
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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, 8, 8), darkPaint);
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canvas.drawRect(SkRect::MakeXYWH(8, 0, 8, 8), lightPaint);
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canvas.drawRect(SkRect::MakeXYWH(0, 8, 8, 8), lightPaint);
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canvas.drawRect(SkRect::MakeXYWH(8, 8, 8, 8), darkPaint);
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canvas.restore();
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}
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}
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}
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virtual SkISize onISize() {
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return make_isize(WIDTH, HEIGHT);
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}
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virtual void onDraw(SkCanvas* canvas) {
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if (!fInitialized) {
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make_bitmap();
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make_checkerboard();
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fInitialized = true;
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}
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canvas->clear(0x00000000);
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SkPaint paint;
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int x = 0, y = 0;
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for (size_t i = 0; i < 4; i++) {
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SkBitmap* bitmap = (i & 0x01) ? &fCheckerboard : &fBitmap;
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SkRect srcRect = SkRect::MakeXYWH(SkIntToScalar(bitmap->width()/4),
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SkIntToScalar(bitmap->height()/4),
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SkIntToScalar(bitmap->width()/(i+1)),
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SkIntToScalar(bitmap->height()/(i+1)));
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SkRect dstRect = SkRect::MakeXYWH(SkIntToScalar(i * 8),
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SkIntToScalar(i * 4),
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SkIntToScalar(bitmap->width() - i * 12),
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SkIntToScalar(bitmap->height()) - i * 12);
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SkAutoTUnref<SkImageFilter> tileInput(SkNEW_ARGS(SkBitmapSource, (*bitmap)));
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SkAutoTUnref<SkImageFilter> filter(SkNEW_ARGS(
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SkTileImageFilter, (srcRect, dstRect, tileInput)));
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canvas->save();
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canvas->translate(SkIntToScalar(x), SkIntToScalar(y));
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paint.setImageFilter(filter);
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canvas->drawBitmap(fBitmap, 0, 0, &paint);
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canvas->restore();
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x += bitmap->width() + MARGIN;
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if (x + bitmap->width() > WIDTH) {
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x = 0;
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y += bitmap->height() + MARGIN;
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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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SkBitmap fBitmap, fCheckerboard;
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bool fInitialized;
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};
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//////////////////////////////////////////////////////////////////////////////
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static GM* MyFactory(void*) { return new TileImageFilterGM; }
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static GMRegistry reg(MyFactory);
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}
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