flutter_flutter/sky/engine/platform/fonts/apple/FontPlatformDataApple.cpp
Eric Seidel 135ce7319f Make fonts not awful on iOS
This code was written from scratch for Sky by copying what
linux did, however that doesn't match with the expectations
of the surrounding code.  Instead here I just copied what Blink
was doing around this time by looking at:
https://blink.lc/blink/tree/Source/platform/fonts/mac/FontPlatformDataMac.mm?id=f0ab9794a9d1240ce5a57e510fdb82dbc8337906

Blink has since diverged from this codepath, but this at least
makes our FontPlatformData match how the rest of the mac code
expects it to operate.  This is all way more complicated than
we need.

@chinmaygarde
2015-07-30 14:17:22 -07:00

85 lines
3.4 KiB
C++

/*
* Copyright (c) 2006, 2007, 2008, Google Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following disclaimer
* in the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "base/logging.h"
#include "sky/engine/platform/fonts/FontPlatformData.h"
#include "sky/engine/platform/fonts/FontCache.h"
namespace blink {
void FontPlatformData::setupPaint(SkPaint* paint,
GraphicsContext* context) const {
bool shouldSmoothFonts = true;
bool shouldAntialias = true;
bool useSubpixelText = true;
paint->setAntiAlias(shouldAntialias);
paint->setEmbeddedBitmapText(false);
const float ts = m_textSize >= 0 ? m_textSize : 12;
paint->setTextSize(SkFloatToScalar(ts));
paint->setTypeface(typeface());
paint->setFakeBoldText(m_syntheticBold);
paint->setTextSkewX(m_syntheticItalic ? -SK_Scalar1 / 4 : 0);
paint->setAutohinted(false); // freetype specific
paint->setLCDRenderText(shouldSmoothFonts);
paint->setSubpixelText(useSubpixelText);
paint->setHinting(SkPaint::kNo_Hinting);
}
void FontPlatformData::querySystemForRenderStyle(
bool useSkiaSubpixelPositioning) {
if (!m_style.useHinting)
m_style.hintStyle = SkPaint::kNo_Hinting;
else if (m_style.useHinting == FontRenderStyle::NoPreference)
m_style.hintStyle = SkPaint::kNormal_Hinting;
if (m_style.useBitmaps == FontRenderStyle::NoPreference)
m_style.useBitmaps = true;
if (m_style.useAutoHint == FontRenderStyle::NoPreference)
m_style.useAutoHint = true;
if (m_style.useAntiAlias == FontRenderStyle::NoPreference)
m_style.useAntiAlias = true;
if (m_style.useSubpixelRendering == FontRenderStyle::NoPreference)
m_style.useSubpixelRendering = false;
if (m_style.useSubpixelPositioning == FontRenderStyle::NoPreference)
m_style.useSubpixelPositioning = useSkiaSubpixelPositioning;
}
bool FontPlatformData::defaultUseSubpixelPositioning() {
return false;
}
void FontCache::getFontForCharacter(
UChar32 c,
const char* preferredLocale,
FontCache::PlatformFallbackFont* fallbackFont) {
DCHECK(false);
}
} // namespace blink