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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 "gm.h"
#include "sk_tool_utils.h"
#include "SkCanvas.h"
#include "SkPaint.h"
#include "SkPath.h"
#include "SkRandom.h"
namespace skiagm {
class EmptyPathGM : public GM {
public:
EmptyPathGM() {}
protected:
SkString onShortName() {
return SkString("emptypath");
}
SkISize onISize() { return SkISize::Make(600, 280); }
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 onDraw(SkCanvas* canvas) {
struct FillAndName {
SkPath::FillType fFill;
const char* fName;
};
constexpr 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;
};
constexpr 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);
sk_tool_utils::set_portable_typeface(&titlePaint);
titlePaint.setTextSize(15 * SK_Scalar1);
const char title[] = "Empty Paths Drawn Into Rectangle Clips With "
"Indicated Style and Fill";
canvas->drawString(title,
20 * SK_Scalar1,
20 * SK_Scalar1,
titlePaint);
SkRandom rand;
SkRect rect = SkRect::MakeWH(100*SK_Scalar1, 30*SK_Scalar1);
int i = 0;
canvas->save();
canvas->translate(10 * 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() + 40 * SK_Scalar1);
canvas->save();
} else {
canvas->translate(rect.width() + 40 * SK_Scalar1, 0);
}
++i;
SkColor color = rand.nextU();
color = 0xff000000 | color; // force solid
color = sk_tool_utils::color_to_565(color);
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);
SkPaint labelPaint;
labelPaint.setColor(color);
labelPaint.setAntiAlias(true);
sk_tool_utils::set_portable_typeface(&labelPaint);
labelPaint.setTextSize(12 * SK_Scalar1);
canvas->drawString(gStyles[style].fName,
0, rect.height() + 15 * SK_Scalar1,
labelPaint);
canvas->drawString(gFills[fill].fName,
0, rect.height() + 28 * SK_Scalar1,
labelPaint);
}
}
canvas->restore();
canvas->restore();
}
private:
typedef GM INHERITED;
};
DEF_GM( return new EmptyPathGM; )
//////////////////////////////////////////////////////////////////////////////
static void make_path_move(SkPath* path, const SkPoint pts[3]) {
for (int i = 0; i < 3; ++i) {
path->moveTo(pts[i]);
}
}
static void make_path_move_close(SkPath* path, const SkPoint pts[3]) {
for (int i = 0; i < 3; ++i) {
path->moveTo(pts[i]);
path->close();
}
}
static void make_path_move_line(SkPath* path, const SkPoint pts[3]) {
for (int i = 0; i < 3; ++i) {
path->moveTo(pts[i]);
path->lineTo(pts[i]);
}
}
typedef void (*MakePathProc)(SkPath*, const SkPoint pts[3]);
static void make_path_move_mix(SkPath* path, const SkPoint pts[3]) {
path->moveTo(pts[0]);
path->moveTo(pts[1]); path->close();
path->moveTo(pts[2]); path->lineTo(pts[2]);
}
class EmptyStrokeGM : public GM {
SkPoint fPts[3];
public:
EmptyStrokeGM() {
fPts[0].set(40, 40);
fPts[1].set(80, 40);
fPts[2].set(120, 40);
}
protected:
SkString onShortName() override {
return SkString("emptystroke");
}
SkISize onISize() override { return SkISize::Make(200, 240); }
void onDraw(SkCanvas* canvas) override {
const MakePathProc procs[] = {
make_path_move, // expect red red red
make_path_move_close, // expect black black black
make_path_move_line, // expect black black black
make_path_move_mix, // expect red black black,
};
SkPaint strokePaint;
strokePaint.setStyle(SkPaint::kStroke_Style);
strokePaint.setStrokeWidth(21);
strokePaint.setStrokeCap(SkPaint::kSquare_Cap);
SkPaint dotPaint;
dotPaint.setColor(SK_ColorRED);
strokePaint.setStyle(SkPaint::kStroke_Style);
dotPaint.setStrokeWidth(7);
for (size_t i = 0; i < SK_ARRAY_COUNT(procs); ++i) {
SkPath path;
procs[i](&path, fPts);
canvas->drawPoints(SkCanvas::kPoints_PointMode, 3, fPts, dotPaint);
canvas->drawPath(path, strokePaint);
canvas->translate(0, 40);
}
}
private:
typedef GM INHERITED;
};
DEF_GM( return new EmptyStrokeGM; )
}
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