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108 lines
3.1 KiB
C++
108 lines
3.1 KiB
C++
// vim: set tabstop=4 shiftwidth=4 expandtab:
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/*
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Gwenview: an image viewer
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Copyright 2011 Aurélien Gâteau <agateau@kde.org>
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Cambridge, MA 02110-1301, USA.
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*/
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// Self
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#include "moc_contextbarbutton.cpp"
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// Local
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#include "paintutils.h"
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// KDE
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#include <KIconLoader>
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// Qt
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#include <QtGui/qstyleoption.h>
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#include <QStylePainter>
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namespace Gwenview
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{
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/** How lighter is the border of context bar buttons */
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const int CONTEXTBAR_BORDER_LIGHTNESS = 140;
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/** How darker is the background of context bar buttons */
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const int CONTEXTBAR_BACKGROUND_DARKNESS = 170;
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/** How lighter are context bar buttons when under mouse */
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const int CONTEXTBAR_MOUSEOVER_LIGHTNESS = 115;
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/** Radius of ContextBarButtons */
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const int CONTEXTBAR_RADIUS = 5;
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struct ContextBarButtonPrivate
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{
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};
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ContextBarButton::ContextBarButton(const QString& iconName, QWidget* parent)
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: QToolButton(parent)
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, d(new ContextBarButtonPrivate)
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{
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const int size = KIconLoader::global()->currentSize(KIconLoader::Small);
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setIconSize(QSize(size, size));
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setAutoRaise(true);
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setIcon(SmallIcon(iconName));
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}
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ContextBarButton::~ContextBarButton()
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{
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delete d;
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}
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void Gwenview::ContextBarButton::paintEvent(QPaintEvent*)
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{
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QStylePainter painter(this);
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painter.setRenderHint(QPainter::Antialiasing);
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QStyleOptionToolButton opt;
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initStyleOption(&opt);
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const QColor bgColor = palette().color(backgroundRole());
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QColor color = bgColor.dark(CONTEXTBAR_BACKGROUND_DARKNESS);
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QColor borderColor = bgColor.light(CONTEXTBAR_BORDER_LIGHTNESS);
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if (opt.state & QStyle::State_MouseOver && opt.state & QStyle::State_Enabled) {
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color = color.light(CONTEXTBAR_MOUSEOVER_LIGHTNESS);
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borderColor = borderColor.light(CONTEXTBAR_MOUSEOVER_LIGHTNESS);
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}
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const QRectF rectF = QRectF(opt.rect).adjusted(0.5, 0.5, -0.5, -0.5);
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const QPainterPath path = PaintUtils::roundedRectangle(rectF, CONTEXTBAR_RADIUS);
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// Background
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painter.fillPath(path, color);
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// Top shadow
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QLinearGradient gradient(rectF.topLeft(), rectF.topLeft() + QPoint(0, 5));
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gradient.setColorAt(0, QColor::fromHsvF(0, 0, 0, .3));
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gradient.setColorAt(1, Qt::transparent);
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painter.fillPath(path, gradient);
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// Left shadow
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gradient.setFinalStop(rectF.topLeft() + QPoint(5, 0));
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painter.fillPath(path, gradient);
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// Border
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painter.setPen(borderColor);
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painter.drawPath(path);
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// Content
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painter.drawControl(QStyle::CE_ToolButtonLabel, opt);
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}
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} // namespace
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