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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.h"
#include "Resources.h"
#include "SkFixed.h"
#include "SkFontDescriptor.h"
#include "SkFontMgr.h"
#include "SkTypeface.h"
namespace skiagm {
class FontScalerDistortableGM : public GM {
public:
FontScalerDistortableGM() {
this->setBGColor(0xFFFFFFFF);
}
virtual ~FontScalerDistortableGM() { }
protected:
SkString onShortName() override {
return SkString("fontscalerdistortable");
}
SkISize onISize() override {
return SkISize::Make(550, 700);
}
static void rotate_about(SkCanvas* canvas, SkScalar degrees, SkScalar px, SkScalar py) {
canvas->translate(px, py);
canvas->rotate(degrees);
canvas->translate(-px, -py);
}
void onDraw(SkCanvas* canvas) override {
SkPaint paint;
paint.setAntiAlias(true);
paint.setLCDRenderText(true);
SkAutoTUnref<SkFontMgr> fontMgr(SkFontMgr::RefDefault());
SkAutoTDelete<SkStreamAsset> distortable(GetResourceAsStream("/fonts/Distortable.ttf"));
if (!distortable) {
return;
}
const char* text = "abc";
const size_t textLen = strlen(text);
for (int j = 0; j < 2; ++j) {
for (int i = 0; i < 5; ++i) {
SkScalar x = SkIntToScalar(10);
SkScalar y = SkIntToScalar(20);
SkFourByteTag tag = SkSetFourByteTag('w','g','h','t');
SkScalar styleValue = SkDoubleToScalar(0.5 + (5*j + i) * ((2.0 - 0.5) / (2 * 5)));
SkFontMgr::FontParameters::Axis axes[] = { { tag, styleValue } };
SkAutoTUnref<SkTypeface> typeface(fontMgr->createFromStream(
distortable->duplicate(), SkFontMgr::FontParameters().setAxes(axes, 1)));
paint.setTypeface(typeface);
SkAutoCanvasRestore acr(canvas, true);
canvas->translate(SkIntToScalar(30 + i * 100), SkIntToScalar(20));
rotate_about(canvas, SkIntToScalar(i * 5), x, y * 10);
{
SkPaint p;
p.setAntiAlias(true);
SkRect r;
r.set(x - SkIntToScalar(3), SkIntToScalar(15),
x - SkIntToScalar(1), SkIntToScalar(280));
canvas->drawRect(r, p);
}
for (int ps = 6; ps <= 22; ps++) {
paint.setTextSize(SkIntToScalar(ps));
canvas->drawText(text, textLen, x, y, paint);
y += paint.getFontMetrics(nullptr);
}
}
canvas->translate(0, SkIntToScalar(360));
paint.setSubpixelText(true);
}
}
private:
typedef GM INHERITED;
};
//////////////////////////////////////////////////////////////////////////////
static GM* MyFactory(void*) { return new FontScalerDistortableGM; }
static GMRegistry reg(MyFactory);
}
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