blob: 64e7af5558975bb374bcea9b58c2f0d59240c8ac [file] [log] [blame]
/*
* 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 "include/core/SkCanvas.h"
#include "include/core/SkFont.h"
#include "include/core/SkPath.h"
#include "samplecode/Sample.h"
class ComplexClipView : public Sample {
void onOnceBeforeDraw() override {
this->setBGColor(0xFFA0DDA0);
}
SkString name() override { return SkString("ComplexClip"); }
void onDrawContent(SkCanvas* canvas) override {
SkPath path;
path.moveTo(SkIntToScalar(0), SkIntToScalar(50));
path.quadTo(SkIntToScalar(0), SkIntToScalar(0), SkIntToScalar(50), SkIntToScalar(0));
path.lineTo(SkIntToScalar(175), SkIntToScalar(0));
path.quadTo(SkIntToScalar(200), SkIntToScalar(0), SkIntToScalar(200), SkIntToScalar(25));
path.lineTo(SkIntToScalar(200), SkIntToScalar(150));
path.quadTo(SkIntToScalar(200), SkIntToScalar(200), SkIntToScalar(150), SkIntToScalar(200));
path.lineTo(SkIntToScalar(0), SkIntToScalar(200));
path.close();
path.moveTo(SkIntToScalar(50), SkIntToScalar(50));
path.lineTo(SkIntToScalar(150), SkIntToScalar(50));
path.lineTo(SkIntToScalar(150), SkIntToScalar(125));
path.quadTo(SkIntToScalar(150), SkIntToScalar(150), SkIntToScalar(125), SkIntToScalar(150));
path.lineTo(SkIntToScalar(50), SkIntToScalar(150));
path.close();
path.setFillType(SkPathFillType::kEvenOdd);
SkColor pathColor = SK_ColorBLACK;
SkPaint pathPaint;
pathPaint.setAntiAlias(true);
pathPaint.setColor(pathColor);
SkPath clipA;
clipA.moveTo(SkIntToScalar(10), SkIntToScalar(20));
clipA.lineTo(SkIntToScalar(165), SkIntToScalar(22));
clipA.lineTo(SkIntToScalar(70), SkIntToScalar(105));
clipA.lineTo(SkIntToScalar(165), SkIntToScalar(177));
clipA.lineTo(SkIntToScalar(-5), SkIntToScalar(180));
clipA.close();
SkColor colorA = SK_ColorCYAN;
SkPath clipB;
clipB.moveTo(SkIntToScalar(40), SkIntToScalar(10));
clipB.lineTo(SkIntToScalar(190), SkIntToScalar(15));
clipB.lineTo(SkIntToScalar(195), SkIntToScalar(190));
clipB.lineTo(SkIntToScalar(40), SkIntToScalar(185));
clipB.lineTo(SkIntToScalar(155), SkIntToScalar(100));
clipB.close();
SkColor colorB = SK_ColorRED;
SkFont font;
font.setSize(20);
SkPaint paint;
paint.setAntiAlias(true);
paint.setStyle(SkPaint::kStroke_Style);
paint.setStrokeWidth(0);
canvas->translate(SkIntToScalar(10),SkIntToScalar(10));
canvas->drawPath(path, pathPaint);
paint.setColor(colorA);
canvas->drawPath(clipA, paint);
paint.setColor(colorB);
canvas->drawPath(clipB, paint);
static const struct {
SkClipOp fOp;
const char* fName;
} gOps[] = { //extra spaces in names for measureText
{SkClipOp::kIntersect, "Isect "},
{SkClipOp::kDifference, "Diff " },
};
canvas->translate(0, SkIntToScalar(40));
canvas->scale(3 * SK_Scalar1 / 4, 3 * SK_Scalar1 / 4);
canvas->save();
for (int invA = 0; invA < 2; ++invA) {
for (size_t op = 0; op < SK_ARRAY_COUNT(gOps); ++op) {
size_t idx = invA * SK_ARRAY_COUNT(gOps) + op;
if (!(idx % 3)) {
canvas->restore();
canvas->translate(0, SkIntToScalar(250));
canvas->save();
}
canvas->save();
// set clip
clipA.setFillType(invA ? SkPathFillType::kInverseEvenOdd :
SkPathFillType::kEvenOdd);
canvas->clipPath(clipA);
canvas->clipPath(clipB, gOps[op].fOp);
// draw path clipped
canvas->drawPath(path, pathPaint);
canvas->restore();
// draw path in hairline
paint.setColor(pathColor);
canvas->drawPath(path, paint);
// draw clips in hair line
paint.setColor(colorA);
canvas->drawPath(clipA, paint);
paint.setColor(colorB);
canvas->drawPath(clipB, paint);
SkScalar txtX = SkIntToScalar(55);
paint.setColor(colorA);
const char* aTxt = invA ? "InverseA " : "A ";
canvas->drawSimpleText(aTxt, strlen(aTxt), SkTextEncoding::kUTF8, txtX, SkIntToScalar(220), font, paint);
txtX += font.measureText(aTxt, strlen(aTxt), SkTextEncoding::kUTF8);
paint.setColor(SK_ColorBLACK);
canvas->drawSimpleText(gOps[op].fName, strlen(gOps[op].fName), SkTextEncoding::kUTF8,
txtX, 220, font, paint);
txtX += font.measureText(gOps[op].fName, strlen(gOps[op].fName), SkTextEncoding::kUTF8);
paint.setColor(colorB);
canvas->drawSimpleText("B", 1, SkTextEncoding::kUTF8, txtX, 220, font, paint);
canvas->translate(SkIntToScalar(250),0);
}
}
canvas->restore();
}
};
DEF_SAMPLE( return new ComplexClipView(); )