cac5fd597f
This is part of an effort to ensure that all SkPaint effects can only be allocated on the heap. This patch makes the constructors of SkImageFilter and its subclasses non-public and instead provides factory methods for creating these objects on the heap. We temporarily keep constructor of publicly visible classes public behind a flag. BUG=skia:2187 R=scroggo@google.com, mtklein@chromium.org, reed@google.com, senorblanco@google.com, senorblanco@chromium.org, bsalomon@google.com, sugoi@chromium.org, zork@chromium.org Author: dominikg@chromium.org Review URL: https://codereview.chromium.org/182983003 git-svn-id: http://skia.googlecode.com/svn/trunk@13718 2bbb7eff-a529-9590-31e7-b0007b416f81
230 lines
10 KiB
C++
230 lines
10 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 "SkDisplacementMapEffect.h"
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#include "SkBitmapSource.h"
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namespace skiagm {
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class DisplacementMapGM : public GM {
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public:
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DisplacementMapGM() : 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("displacement");
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}
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void make_bitmaps() {
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make_bitmap();
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make_checkerboard(&fCheckerboard, 80, 80);
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make_checkerboard(&fSmall, 64, 64);
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make_checkerboard(&fLarge, 96, 96);
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make_checkerboard(&fLargeW, 96, 64);
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make_checkerboard(&fLargeH, 64, 96);
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}
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void make_bitmap() {
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fBitmap.allocN32Pixels(80, 80);
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SkCanvas canvas(fBitmap);
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canvas.clear(0x00000000);
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SkPaint paint;
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paint.setAntiAlias(true);
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paint.setColor(0xFF884422);
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paint.setTextSize(SkIntToScalar(96));
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const char* str = "g";
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canvas.drawText(str, strlen(str), SkIntToScalar(15), SkIntToScalar(55), paint);
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}
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void make_checkerboard(SkBitmap* bitmap, int w, int h) {
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bitmap->allocN32Pixels(w, h);
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SkCanvas canvas(*bitmap);
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canvas.clear(0x00000000);
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SkPaint darkPaint;
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darkPaint.setColor(0xFF804020);
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SkPaint lightPaint;
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lightPaint.setColor(0xFF244484);
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for (int y = 0; y < h; y += 16) {
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for (int x = 0; x < w; 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(500, 500);
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}
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void drawClippedBitmap(SkCanvas* canvas, int x, int y, const SkPaint& paint) {
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canvas->save();
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canvas->translate(SkIntToScalar(x), SkIntToScalar(y));
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canvas->clipRect(SkRect::MakeWH(SkIntToScalar(fBitmap.width()), SkIntToScalar(fBitmap.height())));
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canvas->drawBitmap(fBitmap, 0, 0, &paint);
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canvas->restore();
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}
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virtual void onDraw(SkCanvas* canvas) {
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if (!fInitialized) {
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make_bitmaps();
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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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SkAutoTUnref<SkImageFilter> displ(SkBitmapSource::Create(fCheckerboard));
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paint.setImageFilter(SkDisplacementMapEffect::Create(
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SkDisplacementMapEffect::kR_ChannelSelectorType,
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SkDisplacementMapEffect::kG_ChannelSelectorType, 0.0f, displ))->unref();
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drawClippedBitmap(canvas, 0, 0, paint);
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paint.setImageFilter(SkDisplacementMapEffect::Create(
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SkDisplacementMapEffect::kB_ChannelSelectorType,
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SkDisplacementMapEffect::kA_ChannelSelectorType, 16.0f, displ))->unref();
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drawClippedBitmap(canvas, 100, 0, paint);
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paint.setImageFilter(SkDisplacementMapEffect::Create(
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SkDisplacementMapEffect::kR_ChannelSelectorType,
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SkDisplacementMapEffect::kB_ChannelSelectorType, 32.0f, displ))->unref();
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drawClippedBitmap(canvas, 200, 0, paint);
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paint.setImageFilter(SkDisplacementMapEffect::Create(
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SkDisplacementMapEffect::kG_ChannelSelectorType,
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SkDisplacementMapEffect::kA_ChannelSelectorType, 48.0f, displ))->unref();
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drawClippedBitmap(canvas, 300, 0, paint);
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paint.setImageFilter(SkDisplacementMapEffect::Create(
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SkDisplacementMapEffect::kR_ChannelSelectorType,
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SkDisplacementMapEffect::kA_ChannelSelectorType, 64.0f, displ))->unref();
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drawClippedBitmap(canvas, 400, 0, paint);
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paint.setImageFilter(SkDisplacementMapEffect::Create(
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SkDisplacementMapEffect::kR_ChannelSelectorType,
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SkDisplacementMapEffect::kG_ChannelSelectorType, 40.0f, displ))->unref();
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drawClippedBitmap(canvas, 0, 100, paint);
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paint.setImageFilter(SkDisplacementMapEffect::Create(
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SkDisplacementMapEffect::kB_ChannelSelectorType,
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SkDisplacementMapEffect::kA_ChannelSelectorType, 40.0f, displ))->unref();
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drawClippedBitmap(canvas, 100, 100, paint);
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paint.setImageFilter(SkDisplacementMapEffect::Create(
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SkDisplacementMapEffect::kR_ChannelSelectorType,
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SkDisplacementMapEffect::kB_ChannelSelectorType, 40.0f, displ))->unref();
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drawClippedBitmap(canvas, 200, 100, paint);
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paint.setImageFilter(SkDisplacementMapEffect::Create(
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SkDisplacementMapEffect::kG_ChannelSelectorType,
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SkDisplacementMapEffect::kA_ChannelSelectorType, 40.0f, displ))->unref();
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drawClippedBitmap(canvas, 300, 100, paint);
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paint.setImageFilter(SkDisplacementMapEffect::Create(
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SkDisplacementMapEffect::kR_ChannelSelectorType,
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SkDisplacementMapEffect::kA_ChannelSelectorType, 40.0f, displ))->unref();
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drawClippedBitmap(canvas, 400, 100, paint);
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SkImageFilter::CropRect cropRect(SkRect::MakeXYWH(30, 30, 40, 40));
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paint.setImageFilter(SkDisplacementMapEffect::Create(
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SkDisplacementMapEffect::kR_ChannelSelectorType,
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SkDisplacementMapEffect::kG_ChannelSelectorType,
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0.0f, displ, NULL, &cropRect))->unref();
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drawClippedBitmap(canvas, 0, 200, paint);
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paint.setImageFilter(SkDisplacementMapEffect::Create(
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SkDisplacementMapEffect::kB_ChannelSelectorType,
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SkDisplacementMapEffect::kA_ChannelSelectorType,
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16.0f, displ, NULL, &cropRect))->unref();
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drawClippedBitmap(canvas, 100, 200, paint);
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paint.setImageFilter(SkDisplacementMapEffect::Create(
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SkDisplacementMapEffect::kR_ChannelSelectorType,
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SkDisplacementMapEffect::kB_ChannelSelectorType,
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32.0f, displ, NULL, &cropRect))->unref();
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drawClippedBitmap(canvas, 200, 200, paint);
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paint.setImageFilter(SkDisplacementMapEffect::Create(
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SkDisplacementMapEffect::kG_ChannelSelectorType,
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SkDisplacementMapEffect::kA_ChannelSelectorType,
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48.0f, displ, NULL, &cropRect))->unref();
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drawClippedBitmap(canvas, 300, 200, paint);
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paint.setImageFilter(SkDisplacementMapEffect::Create(
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SkDisplacementMapEffect::kR_ChannelSelectorType,
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SkDisplacementMapEffect::kA_ChannelSelectorType,
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64.0f, displ, NULL, &cropRect))->unref();
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drawClippedBitmap(canvas, 400, 200, paint);
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paint.setImageFilter(SkDisplacementMapEffect::Create(
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SkDisplacementMapEffect::kR_ChannelSelectorType,
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SkDisplacementMapEffect::kG_ChannelSelectorType,
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40.0f, displ, NULL, &cropRect))->unref();
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drawClippedBitmap(canvas, 0, 300, paint);
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paint.setImageFilter(SkDisplacementMapEffect::Create(
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SkDisplacementMapEffect::kB_ChannelSelectorType,
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SkDisplacementMapEffect::kA_ChannelSelectorType,
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40.0f, displ, NULL, &cropRect))->unref();
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drawClippedBitmap(canvas, 100, 300, paint);
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paint.setImageFilter(SkDisplacementMapEffect::Create(
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SkDisplacementMapEffect::kR_ChannelSelectorType,
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SkDisplacementMapEffect::kB_ChannelSelectorType,
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40.0f, displ, NULL, &cropRect))->unref();
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drawClippedBitmap(canvas, 200, 300, paint);
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paint.setImageFilter(SkDisplacementMapEffect::Create(
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SkDisplacementMapEffect::kG_ChannelSelectorType,
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SkDisplacementMapEffect::kA_ChannelSelectorType,
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40.0f, displ, NULL, &cropRect))->unref();
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drawClippedBitmap(canvas, 300, 300, paint);
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paint.setImageFilter(SkDisplacementMapEffect::Create(
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SkDisplacementMapEffect::kR_ChannelSelectorType,
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SkDisplacementMapEffect::kA_ChannelSelectorType,
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40.0f, displ, NULL, &cropRect))->unref();
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drawClippedBitmap(canvas, 400, 300, paint);
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// Tests for images of different sizes
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displ.reset(SkBitmapSource::Create(fSmall));
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paint.setImageFilter(SkDisplacementMapEffect::Create(
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SkDisplacementMapEffect::kR_ChannelSelectorType,
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SkDisplacementMapEffect::kG_ChannelSelectorType,
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40.0f, displ))->unref();
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drawClippedBitmap(canvas, 0, 400, paint);
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displ.reset(SkBitmapSource::Create(fLarge));
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paint.setImageFilter(SkDisplacementMapEffect::Create(
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SkDisplacementMapEffect::kB_ChannelSelectorType,
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SkDisplacementMapEffect::kA_ChannelSelectorType,
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40.0f, displ))->unref();
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drawClippedBitmap(canvas, 100, 400, paint);
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displ.reset(SkBitmapSource::Create(fLargeW));
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paint.setImageFilter(SkDisplacementMapEffect::Create(
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SkDisplacementMapEffect::kR_ChannelSelectorType,
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SkDisplacementMapEffect::kB_ChannelSelectorType,
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40.0f, displ))->unref();
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drawClippedBitmap(canvas, 200, 400, paint);
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displ.reset(SkBitmapSource::Create(fLargeH));
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paint.setImageFilter(SkDisplacementMapEffect::Create(
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SkDisplacementMapEffect::kG_ChannelSelectorType,
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SkDisplacementMapEffect::kA_ChannelSelectorType,
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40.0f, displ))->unref();
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drawClippedBitmap(canvas, 300, 400, paint);
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// Test for no given displacement input. In this case, both displacement
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// and color should use the same bitmap, given to SkCanvas::drawBitmap()
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// as an input argument.
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paint.setImageFilter(SkDisplacementMapEffect::Create(
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SkDisplacementMapEffect::kG_ChannelSelectorType,
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SkDisplacementMapEffect::kA_ChannelSelectorType,
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40.0f, NULL))->unref();
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drawClippedBitmap(canvas, 400, 400, paint);
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}
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private:
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typedef GM INHERITED;
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SkBitmap fBitmap, fCheckerboard, fSmall, fLarge, fLargeW, fLargeH;
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bool fInitialized;
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};
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//////////////////////////////////////////////////////////////////////////////
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static GM* MyFactory(void*) { return new DisplacementMapGM; }
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static GMRegistry reg(MyFactory);
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}
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