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/*
* Copyright 2015 Kevin Funk <kfunk@kde.org>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License or (at your option) version 3 or any later version
* accepted by the membership of KDE e.V. (or its successor approved
* by the membership of KDE e.V.), which shall act as a proxy
* defined in Section 14 of version 3 of the license.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
*/
#include "widgetcolorizer.h"
#include <KColorUtils>
#include <KSharedConfig>
#include <KConfigGroup>
#include <QColor>
#include <QPainter>
#include <QPalette>
#include <QTreeView>
using namespace KDevelop;
QColor WidgetColorizer::blendForeground(QColor color, float ratio,
const QColor& foreground, const QColor& background)
{
if (KColorUtils::luma(foreground) > KColorUtils::luma(background)) {
// for dark color schemes, produce a fitting color first
color = KColorUtils::tint(foreground, color, 0.5);
}
// adapt contrast
return KColorUtils::mix(foreground, color, ratio);
}
QColor WidgetColorizer::blendBackground(const QColor& color, float ratio,
const QColor& /*foreground*/, const QColor& background)
{
// adapt contrast
return KColorUtils::mix(background, color, ratio);
}
void WidgetColorizer::drawBranches(const QTreeView* treeView, QPainter* painter,
const QRect& rect, const QModelIndex& /*index*/,
const QColor& baseColor)
{
QRect newRect(rect);
newRect.setWidth(treeView->indentation());
painter->fillRect(newRect, baseColor);
}
QColor WidgetColorizer::colorForId(uint id, const QPalette& activePalette, bool forBackground)
{
const int high = 255;
const int low = 100;
auto color = QColor(qAbs(id % (high - low)),
qAbs((id / 50) % (high - low)),
qAbs((id / (50 * 50)) % (high - low)));
const auto& foreground = activePalette.windowText().color();
const auto& background = activePalette.window().color();
if (forBackground) {
return blendBackground(color, .5, foreground, background);
} else {
return blendForeground(color, .5, foreground, background);
}
}
bool WidgetColorizer::colorizeByProject()
{
return KSharedConfig::openConfig()->group("UiSettings").readEntry("ColorizeByProject", true);
}
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