skia2/samplecode/SampleEmptyPath.cpp
commit-bot@chromium.org e0e7cfe44b Change old PRG to be SkLCGRandom; change new one to SkRandom
The goal here is to get people to start using the new random number
generator, while leaving the old one in place so we don't have to 
rebaseline GMs.

R=reed@google.com, bsalomon@google.com

Author: jvanverth@google.com

Review URL: https://chromiumcodereview.appspot.com/23576015

git-svn-id: http://skia.googlecode.com/svn/trunk@11169 2bbb7eff-a529-9590-31e7-b0007b416f81
2013-09-09 20:09:12 +00:00

130 lines
4.2 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 "SampleCode.h"
#include "SkView.h"
#include "SkCanvas.h"
#include "SkPaint.h"
#include "SkRandom.h"
class EmptyPathView : public SampleView {
public:
EmptyPathView() {}
protected:
// overrides from SkEventSink
virtual bool onQuery(SkEvent* evt) {
if (SampleCode::TitleQ(*evt)) {
SampleCode::TitleR(evt, "EmptyPath");
return true;
}
return this->INHERITED::onQuery(evt);
}
void drawEmpty(SkCanvas* canvas,
SkColor color,
const SkRect& clip,
SkPaint::Style style,
SkPath::FillType fill) {
SkPath path;
path.setFillType(fill);
SkPaint paint;
paint.setColor(color);
paint.setStyle(style);
canvas->save();
canvas->clipRect(clip);
canvas->drawPath(path, paint);
canvas->restore();
}
virtual void onDrawContent(SkCanvas* canvas) {
struct FillAndName {
SkPath::FillType fFill;
const char* fName;
};
static const FillAndName gFills[] = {
{SkPath::kWinding_FillType, "Winding"},
{SkPath::kEvenOdd_FillType, "Even / Odd"},
{SkPath::kInverseWinding_FillType, "Inverse Winding"},
{SkPath::kInverseEvenOdd_FillType, "Inverse Even / Odd"},
};
struct StyleAndName {
SkPaint::Style fStyle;
const char* fName;
};
static const StyleAndName gStyles[] = {
{SkPaint::kFill_Style, "Fill"},
{SkPaint::kStroke_Style, "Stroke"},
{SkPaint::kStrokeAndFill_Style, "Stroke And Fill"},
};
SkPaint titlePaint;
titlePaint.setColor(SK_ColorBLACK);
titlePaint.setAntiAlias(true);
titlePaint.setLCDRenderText(true);
titlePaint.setTextSize(24 * SK_Scalar1);
const char title[] = "Empty Paths Drawn Into Rectangle Clips With Indicated Style and Fill";
canvas->drawText(title, strlen(title),
40 * SK_Scalar1,
100*SK_Scalar1,
titlePaint);
SkRandom rand;
SkRect rect = SkRect::MakeWH(125*SK_Scalar1, 100*SK_Scalar1);
int i = 0;
canvas->save();
canvas->translate(80 * SK_Scalar1, 0);
canvas->save();
for (size_t style = 0; style < SK_ARRAY_COUNT(gStyles); ++style) {
for (size_t fill = 0; fill < SK_ARRAY_COUNT(gFills); ++fill) {
if (0 == i % 4) {
canvas->restore();
canvas->translate(0, rect.height() + 50 * SK_Scalar1);
canvas->save();
} else {
canvas->translate(rect.width() + 100 * SK_Scalar1, 0);
}
++i;
SkColor color = rand.nextU();
color = 0xff000000| color; // force solid
this->drawEmpty(canvas, color, rect,
gStyles[style].fStyle, gFills[fill].fFill);
SkPaint rectPaint;
rectPaint.setColor(SK_ColorBLACK);
rectPaint.setStyle(SkPaint::kStroke_Style);
rectPaint.setStrokeWidth(-1);
rectPaint.setAntiAlias(true);
canvas->drawRect(rect, rectPaint);
char label[1024];
sprintf(label, "%s, %s", gStyles[style].fName,
gFills[fill].fName);
SkPaint labelPaint;
labelPaint.setColor(color);
labelPaint.setAntiAlias(true);
labelPaint.setLCDRenderText(true);
canvas->drawText(label, strlen(label),
0, rect.height() + 15 * SK_Scalar1,
labelPaint);
}
}
canvas->restore();
canvas->restore();
}
private:
typedef SampleView INHERITED;
};
//////////////////////////////////////////////////////////////////////////////
static SkView* MyFactory() { return new EmptyPathView; }
static SkViewRegister reg(MyFactory);