1 files changed, 93 insertions, 0 deletions
diff --git a/src/tooltips/ktooltipwindow.cpp b/src/tooltips/ktooltipwindow.cpp
new file mode 100644
index 000000000..9a1cb45eb
--- /dev/null
+++ b/src/tooltips/ktooltipwindow.cpp
@@ -0,0 +1,93 @@
+/*******************************************************************************
+ *   Copyright (C) 2008 by Fredrik Höglund <[email protected]>                   *
+ *   Copyright (C) 2008 by Konstantin Heil <[email protected]> *
+ *   Copyright (C) 2009 by Peter Penz <[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 "ktooltipwindow_p.h"
+
+#include <kcolorscheme.h>
+
+#include <QPainter>
+#include <QVBoxLayout>
+
+#ifdef Q_WS_X11
+    #include <QX11Info>
+#endif
+
+KToolTipWindow::KToolTipWindow(QWidget* content) :
+    QWidget(0)
+{
+    setAttribute(Qt::WA_TranslucentBackground);
+    setWindowFlags(Qt::ToolTip | Qt::FramelessWindowHint);
+
+    QVBoxLayout* layout = new QVBoxLayout(this);
+    layout->addWidget(content);
+}
+
+KToolTipWindow::~KToolTipWindow()
+{
+}
+
+void KToolTipWindow::paintEvent(QPaintEvent* event)
+{
+    Q_UNUSED(event);
+
+    QPainter painter(this);
+
+    QColor toColor = palette().brush(QPalette::ToolTipBase).color();
+    QColor fromColor = KColorScheme::shade(toColor, KColorScheme::LightShade, 0.2);
+
+#ifdef Q_WS_X11
+    const bool haveAlphaChannel = QX11Info::isCompositingManagerRunning();
+#else
+    const bool haveAlphaChannel = false;
+#endif
+    if (haveAlphaChannel) {
+        painter.setRenderHint(QPainter::Antialiasing);
+        painter.translate(0.5, 0.5);
+        toColor.setAlpha(220);
+        fromColor.setAlpha(220);
+    }
+
+    QLinearGradient gradient(QPointF(0.0, 0.0), QPointF(width(), height()));
+    gradient.setColorAt(0.0, fromColor);
+    gradient.setColorAt(1.0, toColor);
+    painter.setPen(Qt::NoPen);
+    painter.setBrush(gradient);
+
+    const QRect rect(0, 0, width(), height());
+    const qreal radius = 5;
+
+    QPainterPath path;
+    path.moveTo(rect.left(), rect.top() + radius);
+    arc(path, rect.left()  + radius, rect.top()    + radius, radius, 180, -90);
+    arc(path, rect.right() - radius, rect.top()    + radius, radius,  90, -90);
+    arc(path, rect.right() - radius, rect.bottom() - radius, radius,   0, -90);
+    arc(path, rect.left()  + radius, rect.bottom() - radius, radius, 270, -90);
+    path.closeSubpath();
+
+    painter.drawPath(path);
+}
+
+void KToolTipWindow::arc(QPainterPath& path, qreal cx, qreal cy, qreal radius, qreal angle, qreal sweeplength)
+{
+    path.arcTo(cx-radius, cy-radius, radius * 2, radius * 2, angle, sweeplength);
+}
+
+#include "ktooltipwindow_p.moc"