blob: 070ff6af45e2d9412c2d243fab36cef8f5db3238 [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.h"
#include "sk_tool_utils.h"
#include "Resources.h"
#include "SkFontMetrics.h"
#include "SkPath.h"
#include "SkTextUtils.h"
#include "SkTypeface.h"
class Poly2PolyGM : public skiagm::GM {
public:
Poly2PolyGM() {}
protected:
SkString onShortName() override {
return SkString("poly2poly");
}
SkISize onISize() override {
return SkISize::Make(835, 840);
}
static void doDraw(SkCanvas* canvas, const SkFont& font, SkPaint* paint, const int isrc[],
const int idst[], int count) {
SkMatrix matrix;
SkPoint src[4], dst[4];
for (int i = 0; i < count; i++) {
src[i].set(SkIntToScalar(isrc[2*i+0]), SkIntToScalar(isrc[2*i+1]));
dst[i].set(SkIntToScalar(idst[2*i+0]), SkIntToScalar(idst[2*i+1]));
}
canvas->save();
matrix.setPolyToPoly(src, dst, count);
canvas->concat(matrix);
paint->setColor(SK_ColorGRAY);
paint->setStyle(SkPaint::kStroke_Style);
const SkScalar D = 64;
canvas->drawRect(SkRect::MakeWH(D, D), *paint);
canvas->drawLine(0, 0, D, D, *paint);
canvas->drawLine(0, D, D, 0, *paint);
SkFontMetrics fm;
font.getMetrics(&fm);
paint->setColor(SK_ColorRED);
paint->setStyle(SkPaint::kFill_Style);
SkScalar x = D/2;
SkScalar y = D/2 - (fm.fAscent + fm.fDescent)/2;
uint16_t glyphID = 3; // X
SkTextUtils::Draw(canvas, &glyphID, sizeof(glyphID), kGlyphID_SkTextEncoding, x, y,
font, *paint, SkTextUtils::kCenter_Align);
canvas->restore();
}
void onOnceBeforeDraw() override {
fEmFace = MakeResourceAsTypeface("fonts/Em.ttf");
}
void onDraw(SkCanvas* canvas) override {
SkPaint paint;
paint.setAntiAlias(true);
paint.setStrokeWidth(SkIntToScalar(4));
SkFont font(fEmFace, 40);
canvas->save();
canvas->translate(SkIntToScalar(10), SkIntToScalar(10));
// translate (1 point)
const int src1[] = { 0, 0 };
const int dst1[] = { 5, 5 };
doDraw(canvas, font, &paint, src1, dst1, 1);
canvas->restore();
canvas->save();
canvas->translate(SkIntToScalar(160), SkIntToScalar(10));
// rotate/uniform-scale (2 points)
const int src2[] = { 32, 32, 64, 32 };
const int dst2[] = { 32, 32, 64, 48 };
doDraw(canvas, font, &paint, src2, dst2, 2);
canvas->restore();
canvas->save();
canvas->translate(SkIntToScalar(10), SkIntToScalar(110));
// rotate/skew (3 points)
const int src3[] = { 0, 0, 64, 0, 0, 64 };
const int dst3[] = { 0, 0, 96, 0, 24, 64 };
doDraw(canvas, font, &paint, src3, dst3, 3);
canvas->restore();
canvas->save();
canvas->translate(SkIntToScalar(160), SkIntToScalar(110));
// perspective (4 points)
const int src4[] = { 0, 0, 64, 0, 64, 64, 0, 64 };
const int dst4[] = { 0, 0, 96, 0, 64, 96, 0, 64 };
doDraw(canvas, font, &paint, src4, dst4, 4);
canvas->restore();
}
private:
typedef skiagm::GM INHERITED;
sk_sp<SkTypeface> fEmFace;
};
//////////////////////////////////////////////////////////////////////////////
DEF_GM( return new Poly2PolyGM; )