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/*
* 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 "SkBenchmark.h"
#include "SkBitmap.h"
#include "SkCanvas.h"
#include "SkDashPathEffect.h"
#include "SkPaint.h"
#include "SkPath.h"
#include "SkRandom.h"
#include "SkString.h"
#include "SkTDArray.h"
/*
* Cases to consider:
*
* 1. antialiasing on/off (esp. width <= 1)
* 2. strokewidth == 0, 1, 2
* 3. hline, vline, diagonal, rect, oval
* 4. dots [1,1] ([N,N] where N=strokeWidth?) or arbitrary (e.g. [2,1] or [1,2,3,2])
*/
static void path_hline(SkPath* path) {
path->moveTo(SkIntToScalar(10), SkIntToScalar(10));
path->lineTo(SkIntToScalar(600), SkIntToScalar(10));
}
class DashBench : public SkBenchmark {
protected:
SkString fName;
SkTDArray<SkScalar> fIntervals;
int fWidth;
bool fDoClip;
enum {
N = SkBENCHLOOP(100)
};
public:
DashBench(void* param, const SkScalar intervals[], int count, int width,
bool doClip = false) : INHERITED(param) {
fIntervals.append(count, intervals);
for (int i = 0; i < count; ++i) {
fIntervals[i] *= width;
}
fWidth = width;
fName.printf("dash_%d_%s", width, doClip ? "clipped" : "noclip");
fDoClip = doClip;
}
virtual void makePath(SkPath* path) {
path_hline(path);
}
protected:
virtual const char* onGetName() SK_OVERRIDE {
return fName.c_str();
}
virtual void onDraw(SkCanvas* canvas) SK_OVERRIDE {
SkPaint paint;
this->setupPaint(&paint);
paint.setStyle(SkPaint::kStroke_Style);
paint.setStrokeWidth(SkIntToScalar(fWidth));
paint.setAntiAlias(false);
SkPath path;
this->makePath(&path);
paint.setPathEffect(new SkDashPathEffect(fIntervals.begin(),
fIntervals.count(), 0))->unref();
if (fDoClip) {
SkRect r = path.getBounds();
r.inset(-SkIntToScalar(20), -SkIntToScalar(20));
// now move it so we don't intersect
r.offset(0, r.height() * 3 / 2);
canvas->clipRect(r);
}
this->handlePath(canvas, path, paint, N);
}
virtual void handlePath(SkCanvas* canvas, const SkPath& path,
const SkPaint& paint, int N) {
for (int i = 0; i < N; ++i) {
canvas->drawPath(path, paint);
}
}
private:
typedef SkBenchmark INHERITED;
};
class RectDashBench : public DashBench {
public:
RectDashBench(void* param, const SkScalar intervals[], int count, int width, bool doClip = false)
: INHERITED(param, intervals, count, width) {
fName.append("_rect");
}
protected:
virtual void handlePath(SkCanvas* canvas, const SkPath& path,
const SkPaint& paint, int N) SK_OVERRIDE {
SkPoint pts[2];
if (!path.isLine(pts) || pts[0].fY != pts[1].fY) {
this->INHERITED::handlePath(canvas, path, paint, N);
} else {
SkRect rect;
rect.fLeft = pts[0].fX;
rect.fTop = pts[0].fY - paint.getStrokeWidth() / 2;
rect.fRight = rect.fLeft + SkIntToScalar(fWidth);
rect.fBottom = rect.fTop + paint.getStrokeWidth();
SkPaint p(paint);
p.setStyle(SkPaint::kFill_Style);
p.setPathEffect(NULL);
int count = SkScalarRoundToInt((pts[1].fX - pts[0].fX) / (2*fWidth));
SkScalar dx = SkIntToScalar(2 * fWidth);
for (int i = 0; i < N*10; ++i) {
SkRect r = rect;
for (int j = 0; j < count; ++j) {
canvas->drawRect(r, p);
r.offset(dx, 0);
}
}
}
}
private:
typedef DashBench INHERITED;
};
///////////////////////////////////////////////////////////////////////////////
static const SkScalar gDots[] = { SK_Scalar1, SK_Scalar1 };
#define PARAM(array) array, SK_ARRAY_COUNT(array)
static SkBenchmark* gF0(void* p) { return new DashBench(p, PARAM(gDots), 0); }
static SkBenchmark* gF1(void* p) { return new DashBench(p, PARAM(gDots), 1); }
static SkBenchmark* gF2(void* p) { return new DashBench(p, PARAM(gDots), 1, true); }
static SkBenchmark* gF3(void* p) { return new DashBench(p, PARAM(gDots), 4); }
static SkBenchmark* gF4(void* p) { return new RectDashBench(p, PARAM(gDots), 4); }
static BenchRegistry gR0(gF0);
static BenchRegistry gR1(gF1);
static BenchRegistry gR2(gF2);
static BenchRegistry gR3(gF3);
static BenchRegistry gR4(gF4);
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