96 lines
2.8 KiB
C++
96 lines
2.8 KiB
C++
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/*
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* Copyright 2015 Google Inc.
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*
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#include "gm.h"
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#include "Resources.h"
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#include "SkFixed.h"
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#include "SkFontDescriptor.h"
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#include "SkFontMgr.h"
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#include "SkTypeface.h"
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namespace skiagm {
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class FontScalerDistortableGM : public GM {
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public:
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FontScalerDistortableGM() {
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this->setBGColor(0xFFFFFFFF);
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}
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virtual ~FontScalerDistortableGM() { }
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protected:
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SkString onShortName() override {
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return SkString("fontscalerdistortable");
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}
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SkISize onISize() override {
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return SkISize::Make(550, 700);
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}
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static void rotate_about(SkCanvas* canvas, SkScalar degrees, SkScalar px, SkScalar py) {
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canvas->translate(px, py);
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canvas->rotate(degrees);
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canvas->translate(-px, -py);
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}
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void onDraw(SkCanvas* canvas) override {
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SkPaint paint;
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paint.setAntiAlias(true);
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paint.setLCDRenderText(true);
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SkAutoTDelete<SkStreamAsset> distortable(GetResourceAsStream("/fonts/Distortable.ttf"));
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if (!distortable) {
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return;
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}
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const char* text = "abc";
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const size_t textLen = strlen(text);
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for (int j = 0; j < 2; ++j) {
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for (int i = 0; i < 5; ++i) {
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SkScalar x = SkIntToScalar(10);
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SkScalar y = SkIntToScalar(20);
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SkFixed axis = SkDoubleToFixed(0.5 + (5*j + i) * ((2.0 - 0.5) / (2 * 5)));
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SkAutoTUnref<SkTypeface> typeface(SkTypeface::CreateFromFontData(
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new SkFontData(distortable->duplicate(), 0, &axis, 1)));
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paint.setTypeface(typeface);
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SkAutoCanvasRestore acr(canvas, true);
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canvas->translate(SkIntToScalar(30 + i * 100), SkIntToScalar(20));
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rotate_about(canvas, SkIntToScalar(i * 5), x, y * 10);
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{
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SkPaint p;
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p.setAntiAlias(true);
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SkRect r;
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r.set(x - SkIntToScalar(3), SkIntToScalar(15),
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x - SkIntToScalar(1), SkIntToScalar(280));
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canvas->drawRect(r, p);
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}
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for (int ps = 6; ps <= 22; ps++) {
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paint.setTextSize(SkIntToScalar(ps));
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canvas->drawText(text, textLen, x, y, paint);
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y += paint.getFontMetrics(NULL);
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}
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}
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canvas->translate(0, SkIntToScalar(360));
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paint.setSubpixelText(true);
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}
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}
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private:
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typedef GM INHERITED;
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};
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//////////////////////////////////////////////////////////////////////////////
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static GM* MyFactory(void*) { return new FontScalerDistortableGM; }
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static GMRegistry reg(MyFactory);
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}
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