skia2/samplecode/SampleLines.cpp
Hal Canary ea60b951d7 IWYU: SkUtils.h
Change-Id: Ieac05047826b1fb80950d65573d38494a1a5c5e7
Reviewed-on: https://skia-review.googlesource.com/148383
Commit-Queue: Hal Canary <halcanary@google.com>
Commit-Queue: Ben Wagner <bungeman@google.com>
Auto-Submit: Hal Canary <halcanary@google.com>
Reviewed-by: Ben Wagner <bungeman@google.com>
2018-08-21 16:05:44 +00:00

106 lines
2.7 KiB
C++

/*
* Copyright 2011 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 "Sample.h"
#include "SkCanvas.h"
#include "SkCornerPathEffect.h"
#include "SkGradientShader.h"
#include "SkGraphics.h"
#include "SkPath.h"
#include "SkRandom.h"
#include "SkRegion.h"
#include "SkShader.h"
#include "SkUTF.h"
#include "SkColorPriv.h"
#include "SkColorFilter.h"
#include "SkTime.h"
#include "SkTypeface.h"
#include "SkStream.h"
#include "SkColorPriv.h"
class LinesView : public Sample {
public:
LinesView() {}
protected:
bool onQuery(Sample::Event* evt) override {
if (Sample::TitleQ(*evt)) {
Sample::TitleR(evt, "Lines");
return true;
}
return this->INHERITED::onQuery(evt);
}
/*
0x1F * x + 0x1F * (32 - x)
*/
void drawRings(SkCanvas* canvas) {
canvas->scale(SkIntToScalar(1)/2, SkIntToScalar(1)/2);
SkRect r;
SkScalar x = SkIntToScalar(10);
SkScalar y = SkIntToScalar(10);
r.set(x, y, x + SkIntToScalar(100), y + SkIntToScalar(100));
SkPaint paint;
// paint.setAntiAlias(true);
paint.setStyle(SkPaint::kStroke_Style);
paint.setStrokeWidth(SkScalarHalf(SkIntToScalar(3)));
paint.setColor(0xFFFF8800);
// paint.setColor(0xFFFFFFFF);
canvas->drawRect(r, paint);
}
void onDrawContent(SkCanvas* canvas) override {
SkBitmap bm;
decode_file("/kill.gif", &bm);
canvas->drawBitmap(bm, 0, 0, nullptr);
this->drawRings(canvas);
return;
SkPaint paint;
// fAlpha = 0x80;
paint.setColor(SK_ColorWHITE);
paint.setAlpha(fAlpha & 0xFF);
SkRect r;
SkScalar x = SkIntToScalar(10);
SkScalar y = SkIntToScalar(10);
r.set(x, y, x + SkIntToScalar(100), y + SkIntToScalar(100));
canvas->drawRect(r, paint);
return;
paint.setColor(0xffffff00); // yellow
paint.setStyle(SkPaint::kStroke_Style);
paint.setStrokeWidth(SkIntToScalar(2));
// y += SK_Scalar1/2;
canvas->drawLine(x, y, x + SkIntToScalar(90), y + SkIntToScalar(90), paint);
paint.setAntiAlias(true); // with anti-aliasing
y += SkIntToScalar(10);
canvas->drawLine(x, y, x + SkIntToScalar(90), y + SkIntToScalar(90), paint);
}
Sample::Click* onFindClickHandler(SkScalar x, SkScalar y, unsigned) override {
fAlpha = SkScalarRoundToInt(y);
return nullptr;
}
private:
int fAlpha;
typedef Sample INHERITED;
};
//////////////////////////////////////////////////////////////////////////////
DEF_SAMPLE( return new LinesView(); )