skia2/gm/pictureimagefilter.cpp
Mike Reed 77e487dfc0 Revert "Revert "Remove MakeForLocalSpace since picture image is sufficient""
This reverts commit fc45998242.

Reason for revert: google3 updated (I think)

Original change's description:
> Revert "Remove MakeForLocalSpace since picture image is sufficient"
> 
> This reverts commit 0d8766c84c.
> 
> Reason for revert: broke google3
> 
> Original change's description:
> > Remove MakeForLocalSpace since picture image is sufficient
> > 
> > Bug: skia:
> > Change-Id: If38e702c418e93141311490edf447d1f09ed4434
> > Reviewed-on: https://skia-review.googlesource.com/68640
> > Commit-Queue: Mike Reed <reed@google.com>
> > Reviewed-by: Florin Malita <fmalita@chromium.org>
> 
> TBR=robertphillips@google.com,fmalita@chromium.org,reed@google.com
> 
> Change-Id: I3dec3d2c704e02b4db5977c27cc3e6d9f1c68ed5
> No-Presubmit: true
> No-Tree-Checks: true
> No-Try: true
> Bug: skia:
> Reviewed-on: https://skia-review.googlesource.com/69500
> Reviewed-by: Mike Reed <reed@google.com>
> Commit-Queue: Mike Reed <reed@google.com>

TBR=robertphillips@google.com,fmalita@chromium.org,reed@google.com

Change-Id: I5751fa637d280f361dea0f248a43c1f7e9bd8bdc
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: skia:
Reviewed-on: https://skia-review.googlesource.com/69661
Reviewed-by: Mike Reed <reed@google.com>
Commit-Queue: Mike Reed <reed@google.com>
2017-11-09 21:50:27 +00:00

158 lines
5.6 KiB
C++

/*
* 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 "sk_tool_utils.h"
#include "SkPictureImageFilter.h"
#include "SkPictureRecorder.h"
#include "SkImage.h"
#include "SkImageSource.h"
// This GM exercises the SkPictureImageFilter ImageFilter class.
static void fill_rect_filtered(SkCanvas* canvas,
const SkRect& clipRect,
sk_sp<SkImageFilter> filter) {
SkPaint paint;
paint.setImageFilter(filter);
canvas->save();
canvas->clipRect(clipRect);
canvas->drawPaint(paint);
canvas->restore();
}
static sk_sp<SkPicture> make_picture() {
SkPictureRecorder recorder;
SkCanvas* canvas = recorder.beginRecording(100, 100, nullptr, 0);
SkPaint paint;
paint.setAntiAlias(true);
sk_tool_utils::set_portable_typeface(&paint);
paint.setColor(0xFFFFFFFF);
paint.setTextSize(SkIntToScalar(96));
const char* str = "e";
canvas->drawString(str, SkIntToScalar(20), SkIntToScalar(70), paint);
return recorder.finishRecordingAsPicture();
}
// Create a picture that will draw LCD text
static sk_sp<SkPicture> make_LCD_picture() {
SkPictureRecorder recorder;
SkCanvas* canvas = recorder.beginRecording(100, 100, nullptr, 0);
canvas->clear(SK_ColorTRANSPARENT);
SkPaint paint;
paint.setLCDRenderText(true); // want LCD
paint.setAntiAlias(true); // need AA for LCD
sk_tool_utils::set_portable_typeface(&paint);
paint.setColor(0xFFFFFFFF);
// this has to be small enough that it doesn't become a path
paint.setTextSize(SkIntToScalar(36));
const char* str = "e";
canvas->drawString(str, SkIntToScalar(20), SkIntToScalar(70), paint);
return recorder.finishRecordingAsPicture();
}
class PictureImageFilterGM : public skiagm::GM {
public:
PictureImageFilterGM() { }
protected:
SkString onShortName() override {
return SkString("pictureimagefilter");
}
SkISize onISize() override { return SkISize::Make(600, 300); }
void onOnceBeforeDraw() override {
fPicture = make_picture();
fLCDPicture = make_LCD_picture();
}
sk_sp<SkImageFilter> make(sk_sp<SkPicture> pic, SkRect r, SkFilterQuality fq) {
SkISize dim = { SkScalarRoundToInt(r.width()), SkScalarRoundToInt(r.height()) };
auto img = SkImage::MakeFromPicture(pic, dim, nullptr, nullptr,
SkImage::BitDepth::kU8, SkColorSpace::MakeSRGB());
return SkImageSource::Make(img, r, r, fq);
}
sk_sp<SkImageFilter> make(SkFilterQuality fq) {
return make(fPicture, fPicture->cullRect(), fq);
}
void onDraw(SkCanvas* canvas) override {
canvas->clear(SK_ColorGRAY);
{
SkRect srcRect = SkRect::MakeXYWH(20, 20, 30, 30);
SkRect emptyRect = SkRect::MakeXYWH(20, 20, 0, 0);
SkRect bounds = SkRect::MakeXYWH(0, 0, 100, 100);
sk_sp<SkImageFilter> pictureSource(SkPictureImageFilter::Make(fPicture));
sk_sp<SkImageFilter> pictureSourceSrcRect(SkPictureImageFilter::Make(fPicture,
srcRect));
sk_sp<SkImageFilter> pictureSourceEmptyRect(SkPictureImageFilter::Make(fPicture,
emptyRect));
sk_sp<SkImageFilter> pictureSourceResampled = make(kLow_SkFilterQuality);
sk_sp<SkImageFilter> pictureSourcePixelated = make(kNone_SkFilterQuality);
canvas->save();
// Draw the picture unscaled.
fill_rect_filtered(canvas, bounds, pictureSource);
canvas->translate(SkIntToScalar(100), 0);
// Draw an unscaled subset of the source picture.
fill_rect_filtered(canvas, bounds, pictureSourceSrcRect);
canvas->translate(SkIntToScalar(100), 0);
// Draw the picture to an empty rect (should draw nothing).
fill_rect_filtered(canvas, bounds, pictureSourceEmptyRect);
canvas->translate(SkIntToScalar(100), 0);
// Draw the LCD picture to a layer
{
SkPaint stroke;
stroke.setStyle(SkPaint::kStroke_Style);
canvas->drawRect(bounds, stroke);
SkPaint paint;
paint.setImageFilter(make(fLCDPicture, fPicture->cullRect(), kNone_SkFilterQuality));
canvas->scale(4, 4);
canvas->translate(-0.9f*srcRect.fLeft, -2.45f*srcRect.fTop);
canvas->saveLayerPreserveLCDTextRequests(&bounds, &paint);
canvas->restore();
}
canvas->restore();
// Draw the picture scaled
canvas->translate(0, SkIntToScalar(100));
canvas->scale(200 / srcRect.width(), 200 / srcRect.height());
canvas->translate(-srcRect.fLeft, -srcRect.fTop);
fill_rect_filtered(canvas, srcRect, pictureSource);
// Draw the picture scaled, but rasterized at original resolution
canvas->translate(srcRect.width(), 0);
fill_rect_filtered(canvas, srcRect, pictureSourceResampled);
// Draw the picture scaled, pixelated
canvas->translate(srcRect.width(), 0);
fill_rect_filtered(canvas, srcRect, pictureSourcePixelated);
}
}
private:
sk_sp<SkPicture> fPicture;
sk_sp<SkPicture> fLCDPicture;
typedef GM INHERITED;
};
///////////////////////////////////////////////////////////////////////////////
DEF_GM( return new PictureImageFilterGM; )