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/*
* Copyright (C) 2024 Igalia S.L.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. 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.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``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 APPLE INC. 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 "config.h"
#include "FontRenderOptions.h"
#if USE(SKIA)
namespace WebCore {
FontRenderOptions::FontRenderOptions() = default;
void FontRenderOptions::setHinting(std::optional<Hinting> hinting)
{
switch (hinting.value_or(Hinting::Medium)) {
case Hinting::None:
m_hinting = SkFontHinting::kNone;
break;
case Hinting::Slight:
m_hinting = SkFontHinting::kSlight;
break;
case Hinting::Medium:
m_hinting = SkFontHinting::kNormal;
break;
case Hinting::Full:
m_hinting = SkFontHinting::kFull;
break;
}
}
SkFontHinting FontRenderOptions::hinting() const
{
if (m_isHintingDisabledForTesting)
return SkFontHinting::kNone;
if (m_followSystemSettings)
return m_hinting;
return SkFontHinting::kSlight;
}
void FontRenderOptions::setAntialias(std::optional<Antialias> antialias)
{
switch (antialias.value_or(Antialias::Normal)) {
case Antialias::None:
m_antialias = SkFont::Edging::kAlias;
break;
case Antialias::Normal:
m_antialias = SkFont::Edging::kAntiAlias;
break;
case Antialias::Subpixel:
m_antialias = SkFont::Edging::kSubpixelAntiAlias;
break;
}
}
SkFont::Edging FontRenderOptions::antialias() const
{
if (m_followSystemSettings)
return m_antialias;
return SkFont::Edging::kAntiAlias;
}
void FontRenderOptions::setSubpixelOrder(std::optional<SubpixelOrder> subpixelOrder)
{
switch (subpixelOrder.value_or(SubpixelOrder::Unknown)) {
case SubpixelOrder::Unknown:
m_subpixelOrder = kUnknown_SkPixelGeometry;
break;
case SubpixelOrder::HorizontalRGB:
m_subpixelOrder = kRGB_H_SkPixelGeometry;
break;
case SubpixelOrder::HorizontalBGR:
m_subpixelOrder = kBGR_H_SkPixelGeometry;
break;
case SubpixelOrder::VerticalRGB:
m_subpixelOrder = kRGB_V_SkPixelGeometry;
break;
case SubpixelOrder::VerticalBGR:
m_subpixelOrder = kBGR_V_SkPixelGeometry;
break;
}
}
SkPixelGeometry FontRenderOptions::subpixelOrder() const
{
if (m_followSystemSettings)
return m_subpixelOrder;
return kUnknown_SkPixelGeometry;
}
bool FontRenderOptions::useSubpixelPositioning() const
{
// Subpixel positioning is not a system setting, it's set when device scale factor is >= 2.
// So, we only apply it when not following system settings to force subpixel position with
// linear metrics and no hinting.
if (!m_followSystemSettings)
return m_useSubpixelPositioning;
return false;
}
void FontRenderOptions::disableHintingForTesting()
{
m_isHintingDisabledForTesting = true;
}
} // namespace WebCore
#endif // USE(SKIA)
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