1 files changed, 138 insertions, 0 deletions
diff --git a/src/tooltips/ktooltipdelegate.cpp b/src/tooltips/ktooltipdelegate.cpp
new file mode 100644
index 000000000..0141db143
--- /dev/null
+++ b/src/tooltips/ktooltipdelegate.cpp
@@ -0,0 +1,138 @@
+/***************************************************************************
+ *   Copyright (C) 2008 by Fredrik Höglund <[email protected]>               *
+ *                                                                         *
+ *   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) any later version.                                   *
+ *                                                                         *
+ *   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, write to the                         *
+ *   Free Software Foundation, Inc.,                                       *
+ *   51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA            *
+ ***************************************************************************/
+
+#include "ktooltipdelegate.h"
+
+#include "ktooltip.h"
+
+#include <QApplication>
+#include <QPainter>
+#include <QIcon>
+
+#ifdef Q_WS_X11
+#  include <QX11Info>
+#  include <X11/Xlib.h>
+#  include <X11/extensions/shape.h>
+#endif
+
+
+// ----------------------------------------------------------------------------
+
+
+KStyleOptionToolTip::KStyleOptionToolTip()
+    : fontMetrics(QApplication::font())
+{
+}
+
+
+// ----------------------------------------------------------------------------
+
+
+KToolTipDelegate::KToolTipDelegate() : QObject()
+{
+}
+
+KToolTipDelegate::~KToolTipDelegate()
+{
+}
+
+QSize KToolTipDelegate::sizeHint(const KStyleOptionToolTip &option, const KToolTipItem &item) const
+{
+    QSize size;
+    size.rwidth() = option.fontMetrics.width(item.text());
+    size.rheight() = option.fontMetrics.lineSpacing();
+
+    QIcon icon = item.icon();
+    if (!icon.isNull()) {
+        const QSize iconSize = icon.actualSize(option.decorationSize);
+        size.rwidth() += iconSize.width() + 4;
+        size.rheight() = qMax(size.height(), iconSize.height());
+    }
+
+    return size + QSize(20, 20);
+
+}
+
+void KToolTipDelegate::paint(QPainter *painter,
+                             const KStyleOptionToolTip &option,
+                             const KToolTipItem &item) const
+{
+    bool haveAlpha = haveAlphaChannel();
+    painter->setRenderHint(QPainter::Antialiasing);
+
+    QPainterPath path;
+    if (haveAlpha)
+        path.addRoundRect(option.rect.adjusted(0, 0, -1, -1), 25);
+    else
+        path.addRect(option.rect.adjusted(0, 0, -1, -1));
+
+    QColor color = option.palette.color(QPalette::ToolTipBase);
+    QColor from = color.lighter(105);
+    QColor to   = color.darker(120);
+
+    QLinearGradient gradient(0, 0, 0, 1);
+    gradient.setCoordinateMode(QGradient::ObjectBoundingMode);
+    gradient.setColorAt(0, from);
+    gradient.setColorAt(1, to);
+
+    painter->translate(.5, .5);
+    painter->setPen(QPen(Qt::black, 1));
+    painter->setBrush(gradient);
+    painter->drawPath(path);
+    painter->translate(-.5, -.5);
+
+    if (haveAlpha) {
+        QLinearGradient mask(0, 0, 0, 1);
+        gradient.setCoordinateMode(QGradient::ObjectBoundingMode);
+        gradient.setColorAt(0, QColor(0, 0, 0, 192));
+        gradient.setColorAt(1, QColor(0, 0, 0, 72));
+        painter->setCompositionMode(QPainter::CompositionMode_DestinationIn);
+        painter->fillRect(option.rect, gradient);
+        painter->setCompositionMode(QPainter::CompositionMode_SourceOver);
+    }
+
+    QRect textRect = option.rect.adjusted(10, 10, -10, -10);
+
+    QIcon icon = item.icon();
+    if (!icon.isNull()) {
+        const QSize iconSize = icon.actualSize(option.decorationSize);
+        painter->drawPixmap(textRect.topLeft(), icon.pixmap(iconSize));
+        textRect.adjust(iconSize.width() + 4, 0, 0, 0);
+    }
+    painter->drawText(textRect, Qt::AlignLeft | Qt::AlignVCenter, item.text());
+}
+
+QRegion KToolTipDelegate::inputShape(const KStyleOptionToolTip &option) const
+{
+    return QRegion(option.rect);
+}
+
+QRegion KToolTipDelegate::shapeMask(const KStyleOptionToolTip &option) const
+{
+    return QRegion(option.rect);
+}
+
+bool KToolTipDelegate::haveAlphaChannel() const
+{
+#ifdef Q_WS_X11
+    return QX11Info::isCompositingManagerRunning();
+#else
+	return false;
+#endif
+}