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skia2/gm/smallpaths.cpp
Ben Wagner 7fde8e1728 IWYU for gms. 
This almost gets gms to be iwyu clean. The last bit is around gm.cpp
and the tracing framework and its use of atomic. Will also need a way
of keeping things from regressing, which is difficult due to needing to
do this outside-in.

Change-Id: I1393531e99da8b0f1a29f55c53c86d53f459af7d
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/211593
Reviewed-by: Herb Derby <herb@google.com>
Commit-Queue: Ben Wagner <bungeman@google.com>
2019-05-02 17:48:53 +00:00

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/*
* Copyright 2015 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/SkCanvas.h"
#include "include/core/SkPaint.h"
#include "include/core/SkPath.h"
#include "include/core/SkRect.h"
#include "include/core/SkScalar.h"
#include "include/core/SkSize.h"
#include "include/core/SkString.h"
#include "include/core/SkTypes.h"
typedef SkScalar (*MakePathProc)(SkPath*);
static SkScalar make_triangle(SkPath* path) {
constexpr int gCoord[] = {
10, 20, 15, 5, 30, 30
};
path->moveTo(SkIntToScalar(gCoord[0]), SkIntToScalar(gCoord[1]));
path->lineTo(SkIntToScalar(gCoord[2]), SkIntToScalar(gCoord[3]));
path->lineTo(SkIntToScalar(gCoord[4]), SkIntToScalar(gCoord[5]));
path->close();
path->offset(SkIntToScalar(10), SkIntToScalar(0));
return SkIntToScalar(30);
}
static SkScalar make_rect(SkPath* path) {
SkRect r = { SkIntToScalar(10), SkIntToScalar(10),
SkIntToScalar(30), SkIntToScalar(30) };
path->addRect(r);
path->offset(SkIntToScalar(10), SkIntToScalar(0));
return SkIntToScalar(30);
}
static SkScalar make_oval(SkPath* path) {
SkRect r = { SkIntToScalar(10), SkIntToScalar(10),
SkIntToScalar(30), SkIntToScalar(30) };
path->addOval(r);
path->offset(SkIntToScalar(10), SkIntToScalar(0));
return SkIntToScalar(30);
}
static SkScalar make_star(SkPath* path, int n) {
const SkScalar c = SkIntToScalar(45);
const SkScalar r = SkIntToScalar(20);
SkScalar rad = -SK_ScalarPI / 2;
const SkScalar drad = (n >> 1) * SK_ScalarPI * 2 / n;
path->moveTo(c, c - r);
for (int i = 1; i < n; i++) {
rad += drad;
path->lineTo(c + SkScalarCos(rad) * r, c + SkScalarSin(rad) * r);
}
path->close();
return r * 2 * 6 / 5;
}
static SkScalar make_star_5(SkPath* path) { return make_star(path, 5); }
static SkScalar make_star_13(SkPath* path) { return make_star(path, 13); }
static SkScalar make_three_line(SkPath* path) {
static SkScalar xOffset = 34.f;
static SkScalar yOffset = 50.f;
path->moveTo(-32.5f + xOffset, 0.0f + yOffset);
path->lineTo(32.5f + xOffset, 0.0f + yOffset);
path->moveTo(-32.5f + xOffset, 19 + yOffset);
path->lineTo(32.5f + xOffset, 19 + yOffset);
path->moveTo(-32.5f + xOffset, -19 + yOffset);
path->lineTo(32.5f + xOffset, -19 + yOffset);
path->lineTo(-32.5f + xOffset, -19 + yOffset);
path->close();
return SkIntToScalar(70);
}
static SkScalar make_arrow(SkPath* path) {
static SkScalar xOffset = 34.f;
static SkScalar yOffset = 40.f;
path->moveTo(-26.f + xOffset, 0.0f + yOffset);
path->lineTo(26.f + xOffset, 0.0f + yOffset);
path->moveTo(-28.f + xOffset, -2.4748745f + yOffset);
path->lineTo(0 + xOffset, 25.525126f + yOffset);
path->moveTo(-28.f + xOffset, 2.4748745f + yOffset);
path->lineTo(0 + xOffset, -25.525126f + yOffset);
path->lineTo(-28.f + xOffset, 2.4748745f + yOffset);
path->close();
return SkIntToScalar(70);
}
static SkScalar make_curve(SkPath* path) {
static SkScalar xOffset = -382.f;
static SkScalar yOffset = -50.f;
path->moveTo(491 + xOffset, 56 + yOffset);
path->conicTo(435.93292f + xOffset, 56.000031f + yOffset,
382.61078f + xOffset, 69.752716f + yOffset,
0.9920463f);
return SkIntToScalar(40);
}
static SkScalar make_battery(SkPath* path) {
static SkScalar xOffset = 5.0f;
path->moveTo(24.67f + xOffset, 0.33000004f);
path->lineTo(8.3299999f + xOffset, 0.33000004f);
path->lineTo(8.3299999f + xOffset, 5.3299999f);
path->lineTo(0.33000004f + xOffset, 5.3299999f);
path->lineTo(0.33000004f + xOffset, 50.669998f);
path->lineTo(32.669998f + xOffset, 50.669998f);
path->lineTo(32.669998f + xOffset, 5.3299999f);
path->lineTo(24.67f + xOffset, 5.3299999f);
path->lineTo(24.67f + xOffset, 0.33000004f);
path->close();
path->moveTo(25.727224f + xOffset, 12.886665f);
path->lineTo(10.907918f + xOffset, 12.886665f);
path->lineTo(7.5166659f + xOffset, 28.683645f);
path->lineTo(14.810181f + xOffset, 28.683645f);
path->lineTo(7.7024879f + xOffset, 46.135998f);
path->lineTo(28.049999f + xOffset, 25.136419f);
path->lineTo(16.854223f + xOffset, 25.136419f);
path->lineTo(25.727224f + xOffset, 12.886665f);
path->close();
return SkIntToScalar(50);
}
static SkScalar make_battery2(SkPath* path) {
static SkScalar xOffset = 225.625f;
path->moveTo(32.669998f + xOffset, 9.8640003f);
path->lineTo(0.33000004f + xOffset, 9.8640003f);
path->lineTo(0.33000004f + xOffset, 50.669998f);
path->lineTo(32.669998f + xOffset, 50.669998f);
path->lineTo(32.669998f + xOffset, 9.8640003f);
path->close();
path->moveTo(10.907918f + xOffset, 12.886665f);
path->lineTo(25.727224f + xOffset, 12.886665f);
path->lineTo(16.854223f + xOffset, 25.136419f);
path->lineTo(28.049999f + xOffset, 25.136419f);
path->lineTo(7.7024879f + xOffset, 46.135998f);
path->lineTo(14.810181f + xOffset, 28.683645f);
path->lineTo(7.5166659f + xOffset, 28.683645f);
path->lineTo(10.907918f + xOffset, 12.886665f);
path->close();
return SkIntToScalar(70);
}
constexpr MakePathProc gProcs[] = {
make_triangle,
make_rect,
make_oval,
make_star_5,
make_star_13,
make_three_line,
make_arrow,
make_curve,
make_battery,
make_battery2
};
constexpr SkScalar gWidths[] = {
2.0f,
3.0f,
4.0f,
5.0f,
6.0f,
7.0f,
7.0f,
14.0f,
0.0f,
0.0f,
};
constexpr SkScalar gMiters[] = {
2.0f,
3.0f,
3.0f,
3.0f,
4.0f,
4.0f,
4.0f,
4.0f,
4.0f,
4.0f,
};
constexpr SkScalar gXTranslate[] = {
0.0f,
0.0f,
0.0f,
0.0f,
0.0f,
0.0f,
0.0f,
0.0f,
-220.625f,
0.0f,
};
#define N SK_ARRAY_COUNT(gProcs)
// This GM tests out drawing small paths (i.e., for Ganesh, using the Distance
// Field path renderer) which are filled, stroked and filledAndStroked. In
// particular this ensures that any cache keys in use include the stroking
// parameters.
class SmallPathsGM : public skiagm::GM {
SkPath fPath[N];
SkScalar fDY[N];
protected:
void onOnceBeforeDraw() override {
for (size_t i = 0; i < N; i++) {
fDY[i] = gProcs[i](&fPath[i]);
}
}
SkString onShortName() override {
return SkString("smallpaths");
}
SkISize onISize() override {
return SkISize::Make(640, 480);
}
void onDraw(SkCanvas* canvas) override {
SkPaint paint;
paint.setAntiAlias(true);
// first column: filled paths
canvas->save();
for (size_t i = 0; i < N; i++) {
canvas->drawPath(fPath[i], paint);
canvas->translate(gXTranslate[i], fDY[i]);
}
canvas->restore();
canvas->translate(SkIntToScalar(120), SkIntToScalar(0));
// second column: stroked paths
canvas->save();
paint.setStyle(SkPaint::kStroke_Style);
paint.setStrokeCap(SkPaint::kButt_Cap);
for (size_t i = 0; i < N; i++) {
paint.setStrokeWidth(gWidths[i]);
paint.setStrokeMiter(gMiters[i]);
canvas->drawPath(fPath[i], paint);
canvas->translate(gXTranslate[i], fDY[i]);
}
canvas->restore();
canvas->translate(SkIntToScalar(120), SkIntToScalar(0));
// third column: stroked paths with different widths
canvas->save();
paint.setStyle(SkPaint::kStroke_Style);
paint.setStrokeCap(SkPaint::kButt_Cap);
for (size_t i = 0; i < N; i++) {
paint.setStrokeWidth(gWidths[i] + 2.0f);
paint.setStrokeMiter(gMiters[i]);
canvas->drawPath(fPath[i], paint);
canvas->translate(gXTranslate[i], fDY[i]);
}
canvas->restore();
canvas->translate(SkIntToScalar(120), SkIntToScalar(0));
// fourth column: stroked and filled paths
paint.setStyle(SkPaint::kStrokeAndFill_Style);
paint.setStrokeCap(SkPaint::kButt_Cap);
for (size_t i = 0; i < N; i++) {
paint.setStrokeWidth(gWidths[i]);
paint.setStrokeMiter(gMiters[i]);
canvas->drawPath(fPath[i], paint);
canvas->translate(gXTranslate[i], fDY[i]);
}
}
private:
typedef skiagm::GM INHERITED;
};
DEF_GM(return new SmallPathsGM;)
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