Provide tooltips. Per default tooltips are turned off because the information sidebar is turned on already.

Thanks a lot to Konstantin Heil and Fredrik Höglund for the code :-)

CCMAIL: [email protected]
CCMAIL: [email protected]

svn path=/trunk/KDE/kdebase/apps/; revision=795324

1 files changed, 109 insertions, 0 deletions

diff --git a/src/kformattedballoontipdelegate.cpp b/src/kformattedballoontipdelegate.cpp
new file mode 100644
index 000000000..bb3f658df
--- /dev/null
+++ b/src/kformattedballoontipdelegate.cpp
@@ -0,0 +1,109 @@
+/*******************************************************************************
+ *   Copyright (C) 2008 by Fredrik Höglund <[email protected]>                   *
+ *   Copyright (C) 2008 by Konstantin Heil <[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 "kformattedballoontipdelegate.h"
+#include <QBitmap>
+#include <QTextDocument>
+
+QSize KFormattedBalloonTipDelegate::sizeHint(const KStyleOptionToolTip *option, const KToolTipItem *item) const
+{
+    QTextDocument doc;
+    doc.setHtml(item->text());
+    QIcon icon = item->icon();
+    QSize is = (icon.isNull()) ? QSize(0,0) : QSize(icon.actualSize(option->decorationSize).width(),0);
+    return doc.size().toSize()+is+QSize(20,20);
+}
+
+void KFormattedBalloonTipDelegate::paint(QPainter *painter, const KStyleOptionToolTip *option, const KToolTipItem *item) const
+{
+    QRect contents;
+    QPainterPath path = createPath(option, &contents);
+    bool alpha = haveAlphaChannel();
+
+    if (alpha) {
+        painter->setRenderHint(QPainter::Antialiasing);
+        painter->translate(.5, .5);
+    }
+
+#if QT_VERSION >= 0x040400
+    painter->setBrush(option->palette.brush(QPalette::ToolTipBase));
+#else
+    painter->setBrush(option->palette.brush(QPalette::Base));
+#endif
+    painter->drawPath(path);
+
+    QIcon icon = item->icon();
+    if (!icon.isNull()) {
+        const QSize iconSize = icon.actualSize(option->decorationSize);
+        painter->drawPixmap(contents.topLeft(), icon.pixmap(iconSize));
+        contents.adjust(iconSize.width() + 4, 0, 0, 0);
+    }
+
+    QTextDocument doc;
+    doc.setHtml(item->text());
+    QBitmap bitmap(doc.size().toSize());
+    bitmap.fill(Qt::color0);
+    QPainter p(&bitmap);
+    doc.drawContents(&p);
+
+    painter->drawPixmap(contents, bitmap, QRect(QPoint(0,0), bitmap.size()));
+}
+
+QRegion KFormattedBalloonTipDelegate::inputShape(const KStyleOptionToolTip *option) const
+{
+    QBitmap bitmap(option->rect.size()+QSize(20,20));
+    bitmap.fill(Qt::color0);
+
+    QPainter p(&bitmap);
+    p.setPen(QPen(Qt::color1, 1));
+    p.setBrush(Qt::color1);
+    p.drawPath(createPath(option, &QRect()));
+
+    return QRegion(bitmap);
+}
+
+QRegion KFormattedBalloonTipDelegate::shapeMask(const KStyleOptionToolTip *option) const
+{
+    return inputShape(option);
+}
+
+static inline void 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);
+}
+
+QPainterPath KFormattedBalloonTipDelegate::createPath(const KStyleOptionToolTip *option, QRect *contents) const
+{
+    QPainterPath path;
+    QRect rect = option->rect.adjusted(0, 0, -1, -1);
+    qreal radius = 10;
+
+    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();
+
+    if (contents)
+        *contents = rect.adjusted(10, 10, -10, -10);
+
+    return path;
+}