81 lines
2.4 KiB
C++
81 lines
2.4 KiB
C++
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/*
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* Copyright 2018 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 "sk_tool_utils.h"
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#include "Resources.h"
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#include "SkCanvas.h"
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#include "SkStream.h"
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#include "SkTo.h"
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#include "SkTypeface.h"
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namespace skiagm {
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class ScaledEmojiRenderingGM : public GM {
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public:
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ScaledEmojiRenderingGM() {}
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protected:
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sk_sp<SkTypeface> typefaces[4];
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void onOnceBeforeDraw() override {
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typefaces[0] = MakeResourceAsTypeface("fonts/colr.ttf");
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typefaces[1] = MakeResourceAsTypeface("fonts/sbix.ttf");
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typefaces[2] = MakeResourceAsTypeface("fonts/cbdt.ttf");
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typefaces[3] = sk_tool_utils::create_portable_typeface("Emoji", SkFontStyle());
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}
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SkString onShortName() override {
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SkString name("scaledemoji_rendering");
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name.append(sk_tool_utils::platform_font_manager());
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return name;
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}
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SkISize onISize() override { return SkISize::Make(1200, 1200); }
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void onDraw(SkCanvas* canvas) override {
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canvas->drawColor(sk_tool_utils::color_to_565(SK_ColorGRAY));
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SkScalar y = 0;
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for (const auto& typeface: typefaces) {
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SkPaint paint;
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paint.setTypeface(typeface);
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const char* text = sk_tool_utils::emoji_sample_text();
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SkPaint::FontMetrics metrics;
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for (SkScalar textSize : { 70, 150 }) {
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paint.setTextSize(textSize);
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paint.getFontMetrics(&metrics);
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// All typefaces should support subpixel mode
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paint.setSubpixelText(true);
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y += -metrics.fAscent;
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int len = SkToInt(strlen(text));
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SkAutoTArray<SkPoint> pos(len);
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SkAutoTArray<SkScalar> widths(len);
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int found = paint.getTextWidths(text, len, &widths[0]);
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SkScalar x = SkIntToScalar(10);
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for (int i = 0; i < found; ++i) {
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pos[i].set(x, y);
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x += widths[i];
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}
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canvas->drawPosText(text, len, &pos[0], paint);
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y += metrics.fDescent + metrics.fLeading;
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}
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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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DEF_GM(return new ScaledEmojiRenderingGM;)
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}
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