skia2/samplecode/SampleSubpixelTranslate.cpp
Ben Wagner b2c4ea6219 Move Views into Sample and Viewer.
What is left of the SkView system is used only by samples or viewer.
As a result, move it out of the Skia source tree and re-organize so it
is a bit easier to understand and use more shared code.

Move samplecode/ClockFaceView.cpp to samplecode/SampleTextEffects.cpp,
sice that's what's actually in it.

Move SkAnimTimer.h to tools/timer, since it's actually shared between gm
and samples.

Change-Id: I55dafd94c64e4f930ddbd19168e0f812af86c455
Reviewed-on: https://skia-review.googlesource.com/146161
Reviewed-by: Brian Osman <brianosman@google.com>
Commit-Queue: Ben Wagner <bungeman@google.com>
2018-08-09 15:25:32 +00:00

109 lines
3.7 KiB
C++

/*
* Copyright 2014 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "DecodeFile.h"
#include "Resources.h"
#include "Sample.h"
#include "SkBlurMaskFilter.h"
#include "SkCanvas.h"
#include "SkColorPriv.h"
#include "SkRandom.h"
#include "SkStream.h"
// Intended to exercise pixel snapping observed with scaled images (and
// with non-scaled images, but for a different reason): Bug 1145
class SubpixelTranslateView : public Sample {
public:
SubpixelTranslateView(const char imageFilename[],
float horizontalVelocity,
float verticalVelocity)
: fHorizontalVelocity(horizontalVelocity)
, fVerticalVelocity(verticalVelocity)
{
if (!DecodeDataToBitmap(GetResourceAsData(imageFilename), &fBM)) {
fBM.allocN32Pixels(1, 1);
*(fBM.getAddr32(0,0)) = 0xFF0000FF; // red == bad
}
fCurPos = SkPoint::Make(0,0);
fSize = 200;
}
protected:
SkBitmap fBM;
SkScalar fSize;
float fHorizontalVelocity, fVerticalVelocity;
SkPoint fCurPos;
bool onQuery(Sample::Event* evt) override {
if (Sample::TitleQ(*evt)) {
Sample::TitleR(evt, "SubpixelTranslate");
return true;
}
return this->INHERITED::onQuery(evt);
}
void onDrawContent(SkCanvas* canvas) override {
static const SkFilterQuality gQualitys[] = {
kNone_SkFilterQuality,
kLow_SkFilterQuality,
kMedium_SkFilterQuality,
kHigh_SkFilterQuality
};
SkPaint paint;
paint.setTextSize(48);
paint.setSubpixelText(true);
paint.setAntiAlias(true);
for (size_t i = 0; i < SK_ARRAY_COUNT(gQualitys); ++i) {
paint.setFilterQuality(gQualitys[i]);
SkRect r = SkRect::MakeXYWH( fCurPos.fX + i * (fSize + 10), fCurPos.fY, fSize, fSize );
canvas->drawBitmapRect( fBM, r, &paint );
}
canvas->drawString( "AA Scaled", fCurPos.fX + SK_ARRAY_COUNT(gQualitys) * (fSize + 10), fCurPos.fY + fSize/2, paint );
paint.setAntiAlias(false);
for (size_t i = 0; i < SK_ARRAY_COUNT(gQualitys); ++i) {
paint.setFilterQuality(gQualitys[i]);
SkRect r = SkRect::MakeXYWH( fCurPos.fX + i * (fSize + 10), fCurPos.fY + fSize + 10, fSize, fSize );
canvas->drawBitmapRect( fBM, r, &paint );
}
canvas->drawString( "Scaled", fCurPos.fX + SK_ARRAY_COUNT(gQualitys) * (fSize + 10), fCurPos.fY + fSize + 10 + fSize/2, paint );
paint.setAntiAlias(true);
for (size_t i = 0; i < SK_ARRAY_COUNT(gQualitys); ++i) {
paint.setFilterQuality(gQualitys[i]);
canvas->drawBitmap( fBM, fCurPos.fX + i * (fBM.width() + 10), fCurPos.fY + 2*(fSize + 10), &paint );
}
canvas->drawString( "AA No Scale", fCurPos.fX + SK_ARRAY_COUNT(gQualitys) * (fBM.width() + 10), fCurPos.fY + 2*(fSize + 10) + fSize/2, paint );
paint.setAntiAlias(false);
for (size_t i = 0; i < SK_ARRAY_COUNT(gQualitys); ++i) {
paint.setFilterQuality(gQualitys[i]);
canvas->drawBitmap( fBM, fCurPos.fX + i * (fBM.width() + 10), fCurPos.fY + 2*(fSize + 10) + fBM.height() + 10, &paint );
}
canvas->drawString( "No Scale", fCurPos.fX + SK_ARRAY_COUNT(gQualitys) * (fBM.width() + 10), fCurPos.fY + 2*(fSize + 10) + fBM.height() + 10 + fSize/2, paint );
fCurPos.fX += fHorizontalVelocity;
fCurPos.fY += fVerticalVelocity;
}
private:
typedef Sample INHERITED;
};
//////////////////////////////////////////////////////////////////////////////
DEF_SAMPLE( return new SubpixelTranslateView("images/mandrill_256.png", .05f, .05f); )