blob: 31e6ef62f2a93d2f2443fbf96a76caefa19a99e0 [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 "gm/gm.h"
#include "include/core/SkBitmap.h"
#include "include/core/SkBlendMode.h"
#include "include/core/SkCanvas.h"
#include "include/core/SkColor.h"
#include "include/core/SkColorPriv.h"
#include "include/core/SkMatrix.h"
#include "include/core/SkPaint.h"
#include "include/core/SkPath.h"
#include "include/core/SkPathBuilder.h"
#include "include/core/SkPoint.h"
#include "include/core/SkRect.h"
#include "include/core/SkRefCnt.h"
#include "include/core/SkScalar.h"
#include "include/core/SkShader.h"
#include "include/core/SkTileMode.h"
#include "include/core/SkTypes.h"
static void test4(SkCanvas* canvas) {
SkPaint paint;
paint.setAntiAlias(true);
SkPoint pts[] = {
{10, 160}, {610, 160},
{610, 160}, {10, 160},
{610, 160}, {610, 160},
{610, 199}, {610, 199},
{10, 198}, {610, 198},
{610, 199}, {10, 199},
{10, 160}, {10, 160},
{10, 199}, {10, 199}
};
char verbs[] = {
0, 1, 1, 1, 4,
0, 1, 1, 1, 4,
0, 1, 1, 1, 4,
0, 1, 1, 1, 4
};
SkPathBuilder path;
SkPoint* ptPtr = pts;
for (size_t i = 0; i < sizeof(verbs); ++i) {
switch ((SkPath::Verb) verbs[i]) {
case SkPath::kMove_Verb:
path.moveTo(ptPtr->fX, ptPtr->fY);
++ptPtr;
break;
case SkPath::kLine_Verb:
path.lineTo(ptPtr->fX, ptPtr->fY);
++ptPtr;
break;
case SkPath::kClose_Verb:
path.close();
break;
default:
SkASSERT(false);
break;
}
}
SkRect clip = {0, 130, 772, 531};
canvas->clipRect(clip);
canvas->drawPath(path.detach(), paint);
}
constexpr SkBlendMode gModes[] = {
SkBlendMode::kClear,
SkBlendMode::kSrc,
SkBlendMode::kDst,
SkBlendMode::kSrcOver,
SkBlendMode::kDstOver,
SkBlendMode::kSrcIn,
SkBlendMode::kDstIn,
SkBlendMode::kSrcOut,
SkBlendMode::kDstOut,
SkBlendMode::kSrcATop,
SkBlendMode::kDstATop,
SkBlendMode::kXor,
};
const int gWidth = 64;
const int gHeight = 64;
const SkScalar W = SkIntToScalar(gWidth);
const SkScalar H = SkIntToScalar(gHeight);
static SkScalar drawCell(SkCanvas* canvas, SkBlendMode mode, SkAlpha a0, SkAlpha a1) {
SkPaint paint;
paint.setAntiAlias(true);
SkRect r = SkRect::MakeWH(W, H);
r.inset(W/10, H/10);
paint.setColor(SK_ColorBLUE);
paint.setAlpha(a0);
canvas->drawOval(r, paint);
paint.setColor(SK_ColorRED);
paint.setAlpha(a1);
paint.setBlendMode(mode);
SkScalar offset = SK_Scalar1 / 3;
SkRect rect = SkRect::MakeXYWH(W / 4 + offset,
H / 4 + offset,
W / 2, H / 2);
canvas->drawRect(rect, paint);
return H;
}
static sk_sp<SkShader> make_bg_shader() {
SkBitmap bm;
bm.allocN32Pixels(2, 2);
*bm.getAddr32(0, 0) = *bm.getAddr32(1, 1) = 0xFFFFFFFF;
*bm.getAddr32(1, 0) = *bm.getAddr32(0, 1) = SkPackARGB32(0xFF, 0xCE,
0xCF, 0xCE);
const SkMatrix m = SkMatrix::Scale(SkIntToScalar(6), SkIntToScalar(6));
return bm.makeShader(SkTileMode::kRepeat, SkTileMode::kRepeat, &m);
}
DEF_SIMPLE_GM(aarectmodes, canvas, 640, 480) {
SkPaint bgPaint;
bgPaint.setShader(make_bg_shader());
if (false) { // avoid bit rot, suppress warning
test4(canvas);
}
const SkRect bounds = SkRect::MakeWH(W, H);
constexpr SkAlpha gAlphaValue[] = { 0xFF, 0x88, 0x88 };
canvas->translate(SkIntToScalar(4), SkIntToScalar(4));
for (int alpha = 0; alpha < 4; ++alpha) {
canvas->save();
canvas->save();
for (size_t i = 0; i < SK_ARRAY_COUNT(gModes); ++i) {
if (6 == i) {
canvas->restore();
canvas->translate(W * 5, 0);
canvas->save();
}
canvas->drawRect(bounds, bgPaint);
canvas->saveLayer(&bounds, nullptr);
SkScalar dy = drawCell(canvas, gModes[i],
gAlphaValue[alpha & 1],
gAlphaValue[alpha & 2]);
canvas->restore();
canvas->translate(0, dy * 5 / 4);
}
canvas->restore();
canvas->restore();
canvas->translate(W * 5 / 4, 0);
}
}