f460eeec99
Now that no one is using the linear metrics flag directly, change the meaning from 'no-hinting and subpixel positioning at an odd size when measuring and just no-hinting when drawing' to meaning 'use linear metrics'. This also changes the font hosts to no longer use subpixel positioning as a proxy for this value. This fixes outstanding bugs in Chromium about getting the right metrics for hinted fonts. Change-Id: I033b3d5ad431eba906a89cc0fefc59cd6702a02c Reviewed-on: https://skia-review.googlesource.com/c/skia/+/209174 Commit-Queue: Ben Wagner <bungeman@google.com> Reviewed-by: Mike Reed <reed@google.com> Reviewed-by: Herb Derby <herb@google.com>
81 lines
2.4 KiB
C++
81 lines
2.4 KiB
C++
/*
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* Copyright 2011 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/gm.h"
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#include "include/core/SkFont.h"
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#include "include/core/SkTypeface.h"
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#include "tools/ToolUtils.h"
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namespace skiagm {
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class FontScalerGM : public GM {
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public:
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FontScalerGM() {
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this->setBGColor(0xFFFFFFFF);
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}
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protected:
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SkString onShortName() override {
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return SkString("fontscaler");
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}
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SkISize onISize() override {
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return SkISize::Make(1450, 750);
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}
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void onDraw(SkCanvas* canvas) override {
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SkFont font;
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font.setEdging(SkFont::Edging::kSubpixelAntiAlias);
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//With freetype the default (normal hinting) can be really ugly.
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//Most distros now set slight (vertical hinting only) in any event.
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font.setHinting(kSlight_SkFontHinting);
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const char* text = "Hamburgefons ooo mmm";
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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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// This used to do 6 iterations but it causes the N4 to crash in the MSAA4 config.
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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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SkAutoCanvasRestore acr(canvas, true);
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canvas->translate(SkIntToScalar(50 + i * 230),
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SkIntToScalar(20));
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canvas->rotate(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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font.setSize(SkIntToScalar(ps));
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canvas->drawSimpleText(text, textLen, kUTF8_SkTextEncoding, x, y, font, SkPaint());
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y += font.getMetrics(nullptr);
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}
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}
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canvas->translate(0, SkIntToScalar(360));
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font.setSubpixel(true);
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font.setLinearMetrics(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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DEF_GM( return new FontScalerGM; )
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}
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