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/****************************************************************************
**
** Copyright (C) 2020 The Qt Company Ltd.
** Contact: http://www.qt.io/licensing/
**
** This file is part of the QtQuick module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 3 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL3 included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 3 requirements
** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 2.0 or (at your option) the GNU General
** Public license version 3 or any later version approved by the KDE Free
** Qt Foundation. The licenses are as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-2.0.html and
** https://www.gnu.org/licenses/gpl-3.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "qquickpalettecolorprovider_p.h"
#include <QtQuick/private/qquickabstractpaletteprovider_p.h>
QT_BEGIN_NAMESPACE
static bool notEq(const QPalette &p1, const QPalette &p2)
{
return p1.resolveMask() != p2.resolveMask() || p1 != p2;
}
static QPalette::ColorGroup adjustCg(QPalette::ColorGroup group)
{
return group == QPalette::All ? QPalette::Active : group;
}
class DefaultPalettesProvider : public QQuickAbstractPaletteProvider
{
public:
QPalette defaultPalette() const override { static QPalette p; return p; }
QPalette parentPalette() const override { return defaultPalette(); }
};
static std::default_delete<const QQuickAbstractPaletteProvider> defaultDeleter() { return {}; }
QQuickPaletteColorProvider::QQuickPaletteColorProvider()
: m_paletteProvider(ProviderPtr(new DefaultPalettesProvider, defaultDeleter()))
{
}
const QColor &QQuickPaletteColorProvider::color(QPalette::ColorGroup group, QPalette::ColorRole role) const
{
return m_resolvedPalette.color(adjustCg(group), role);
}
bool QQuickPaletteColorProvider::setColor(QPalette::ColorGroup g, QPalette::ColorRole r, QColor c)
{
m_requestedPalette.value() = m_resolvedPalette;
m_requestedPalette->setColor(g, r, c);
return inheritPalette(paletteProvider()->parentPalette());
}
bool QQuickPaletteColorProvider::resetColor(QPalette::ColorGroup group, QPalette::ColorRole role)
{
const auto &defaultPalette = paletteProvider()->defaultPalette() ;
const auto &defaultColor = defaultPalette.color(adjustCg(group), role);
return setColor(group, role, defaultColor);
}
bool QQuickPaletteColorProvider::fromQPalette(QPalette p)
{
m_requestedPalette.value() = std::move(p);
return inheritPalette(paletteProvider()->parentPalette());
}
QPalette QQuickPaletteColorProvider::palette() const
{
return m_resolvedPalette;
}
const QQuickAbstractPaletteProvider *QQuickPaletteColorProvider::paletteProvider() const
{
Q_ASSERT(m_paletteProvider);
return m_paletteProvider.get();
}
void QQuickPaletteColorProvider::setPaletteProvider(const QQuickAbstractPaletteProvider *paletteProvider)
{
static const auto emptyDeleter = [](auto &&){};
m_paletteProvider = ProviderPtr(paletteProvider, emptyDeleter);
}
bool QQuickPaletteColorProvider::copyColorGroup(QPalette::ColorGroup cg,
const QQuickPaletteColorProvider &p)
{
m_requestedPalette.value() = m_resolvedPalette;
auto srcPalette = p.palette();
for (int roleIndex = QPalette::WindowText; roleIndex < QPalette::NColorRoles; ++roleIndex) {
const auto cr = QPalette::ColorRole(roleIndex);
if (srcPalette.isBrushSet(cg, cr)) {
m_requestedPalette->setBrush(cg, cr, srcPalette.brush(cg, cr));
}
}
return inheritPalette(paletteProvider()->parentPalette());
}
bool QQuickPaletteColorProvider::reset()
{
return fromQPalette(QPalette());
}
bool QQuickPaletteColorProvider::inheritPalette(const QPalette &p)
{
auto inheritedMask = m_requestedPalette.isAllocated() ? m_requestedPalette->resolveMask() | p.resolveMask() : p.resolveMask();
QPalette parentPalette = m_requestedPalette.isAllocated() ? m_requestedPalette->resolve(p) : p;
parentPalette.setResolveMask(inheritedMask);
auto tmpResolvedPalette = parentPalette.resolve(paletteProvider()->defaultPalette());
tmpResolvedPalette.setResolveMask(tmpResolvedPalette.resolveMask() | inheritedMask);
bool changed = notEq(tmpResolvedPalette, m_resolvedPalette);
if (changed) {
std::swap(tmpResolvedPalette, m_resolvedPalette);
}
return changed;
}
QT_END_NAMESPACE
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