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/*
* Copyright (C) 2015, 2020 Igalia S.L.
* Copyright (C) 2023 Apple 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:
* 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. AND ITS 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 APPLE INC. OR ITS 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 "ThemeAdwaita.h"
#if USE(THEME_ADWAITA)
#include "Adwaita.h"
#include "Color.h"
#include "FontCascade.h"
#include "LengthSize.h"
#include <wtf/NeverDestroyed.h>
#if PLATFORM(GTK) || PLATFORM(WPE)
#include "SystemSettings.h"
#endif
namespace WebCore {
using namespace WebCore::Adwaita;
Theme& Theme::singleton()
{
static NeverDestroyed<ThemeAdwaita> theme;
return theme;
}
ThemeAdwaita::ThemeAdwaita()
{
#if PLATFORM(GTK) || PLATFORM(WPE)
refreshSettings();
// Note that Theme is NeverDestroy'd so the destructor will never be called to disconnect this.
SystemSettings::singleton().addObserver([this](const SystemSettings::State& state) mutable {
if (state.enableAnimations || state.themeName)
this->refreshSettings();
}, this);
#endif // PLATFORM(GTK) || PLATFORM(WPE)
}
#if PLATFORM(GTK) || PLATFORM(WPE)
void ThemeAdwaita::refreshSettings()
{
if (auto enableAnimations = SystemSettings::singleton().enableAnimations())
m_prefersReducedMotion = !enableAnimations.value();
// For high contrast in GTK3 we can rely on the theme name and be accurate most of the time.
// However whether or not high-contrast is enabled is also stored in GSettings/xdg-desktop-portal.
// We could rely on libadwaita, dynamically, to re-use its logic.
#if PLATFORM(GTK) && !USE(GTK4)
if (auto themeName = SystemSettings::singleton().themeName())
m_prefersContrast = themeName == "HighContrast"_s || themeName == "HighContrastInverse"_s;
#endif // PLATFORM(GTK) && !USE(GTK4)
}
#endif // PLATFORM(GTK) || PLATFORM(WPE)
LengthSize ThemeAdwaita::controlSize(StyleAppearance appearance, const FontCascade& fontCascade, const LengthSize& zoomedSize, float zoomFactor) const
{
if (!zoomedSize.width.isIntrinsicOrAuto() && !zoomedSize.height.isIntrinsicOrAuto())
return Theme::controlSize(appearance, fontCascade, zoomedSize, zoomFactor);
switch (appearance) {
case StyleAppearance::Checkbox:
case StyleAppearance::Radio: {
LengthSize buttonSize = zoomedSize;
if (buttonSize.width.isIntrinsicOrAuto())
buttonSize.width = Length(12 * zoomFactor, LengthType::Fixed);
if (buttonSize.height.isIntrinsicOrAuto())
buttonSize.height = Length(12 * zoomFactor, LengthType::Fixed);
return buttonSize;
}
case StyleAppearance::InnerSpinButton: {
LengthSize spinButtonSize = zoomedSize;
if (spinButtonSize.width.isIntrinsicOrAuto())
spinButtonSize.width = Length(static_cast<int>(arrowSize * zoomFactor), LengthType::Fixed);
if (spinButtonSize.height.isIntrinsicOrAuto() || fontCascade.size() > arrowSize)
spinButtonSize.height = Length(fontCascade.size(), LengthType::Fixed);
return spinButtonSize;
}
default:
break;
}
return Theme::controlSize(appearance, fontCascade, zoomedSize, zoomFactor);
}
LengthSize ThemeAdwaita::minimumControlSize(StyleAppearance, const FontCascade&, const LengthSize& zoomedSize, float) const
{
if (!zoomedSize.width.isIntrinsicOrAuto() && !zoomedSize.height.isIntrinsicOrAuto())
return zoomedSize;
LengthSize minSize = zoomedSize;
if (minSize.width.isIntrinsicOrAuto())
minSize.width = Length(0, LengthType::Fixed);
if (minSize.height.isIntrinsicOrAuto())
minSize.height = Length(0, LengthType::Fixed);
return minSize;
}
LengthBox ThemeAdwaita::controlBorder(StyleAppearance appearance, const FontCascade& font, const LengthBox& zoomedBox, float zoomFactor) const
{
switch (appearance) {
case StyleAppearance::PushButton:
case StyleAppearance::DefaultButton:
case StyleAppearance::Button:
case StyleAppearance::SquareButton:
return zoomedBox;
default:
break;
}
return Theme::controlBorder(appearance, font, zoomedBox, zoomFactor);
}
void ThemeAdwaita::setAccentColor(const Color& color)
{
if (m_accentColor == color)
return;
m_accentColor = color;
platformColorsDidChange();
}
Color ThemeAdwaita::accentColor()
{
return m_accentColor;
}
bool ThemeAdwaita::userPrefersContrast() const
{
#if !USE(GTK4)
return m_prefersContrast;
#else
return false;
#endif
}
bool ThemeAdwaita::userPrefersReducedMotion() const
{
return m_prefersReducedMotion;
}
} // namespace WebCore
#endif // USE(THEME_ADWAITA)
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