-/***************************************************************************
- * Copyright (C) 2008 by Fredrik Höglund <fredrik@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) 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 "kballoontipdelegate.h"
-#include <QPainterPath>
-#include <QPainter>
-#include <QBitmap>
-
-QSize KBalloonTipDelegate::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());
- }
-
- int margin = 2 * 10 + (option->activeCorner != KStyleOptionToolTip::NoCorner ? 10 : 0);
- return size + QSize(margin, margin);
-}
-
-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 KBalloonTipDelegate::createPath(const KStyleOptionToolTip *option, QRect *contents) const
-{
- QPainterPath path;
- QRect rect = option->rect.adjusted(0, 0, -1, -1);
- qreal radius = 10;
-
- switch (option->activeCorner)
- {
- case KStyleOptionToolTip::TopLeftCorner:
- rect.adjust(10, 10, 0, 0);
- path.moveTo(option->rect.topLeft());
- path.lineTo(rect.left() + radius, rect.top());
- 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.lineTo(rect.left(), rect.top() + radius);
- path.closeSubpath();
- break;
-
- case KStyleOptionToolTip::TopRightCorner:
- rect.adjust(0, 10, -10, 0);
- path.moveTo(option->rect.topRight());
- path.lineTo(rect.right(), rect.top() + radius);
- arc(path, rect.right() - radius, rect.bottom() - radius, radius, 0, -90);
- arc(path, rect.left() + radius, rect.bottom() - radius, radius, 270, -90);
- arc(path, rect.left() + radius, rect.top() + radius, radius, 180, -90);
- path.lineTo(rect.right() - radius, rect.top());
- path.closeSubpath();
- break;
-
- case KStyleOptionToolTip::BottomLeftCorner:
- rect.adjust(10, 0, 0, -10);
- path.moveTo(option->rect.bottomLeft());
- path.lineTo(rect.left(), rect.bottom() - 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);
- path.lineTo(rect.left() + radius, rect.bottom());
- path.closeSubpath();
- break;
-
- case KStyleOptionToolTip::BottomRightCorner:
- rect.adjust(0, 0, -10, -10);
- path.moveTo(option->rect.bottomRight());
- path.lineTo(rect.right() - radius, rect.bottom());
- arc(path, rect.left() + radius, rect.bottom() - radius, radius, 270, -90);
- arc(path, rect.left() + radius, rect.top() + radius, radius, 180, -90);
- arc(path, rect.right() - radius, rect.top() + radius, radius, 90, -90);
- path.lineTo(rect.right(), rect.bottom() - radius);
- path.closeSubpath();
- break;
-
- default:
- 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();
- break;
- }
-
- if (contents)
- *contents = rect.adjusted(10, 10, -10, -10);
-
- return path;
-}
-
-void KBalloonTipDelegate::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);
-
- if (alpha)
- painter->translate(-.5, -.5);
-
- 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);
- }
-
- painter->drawText(contents, Qt::AlignLeft | Qt::AlignVCenter, item->text());
-}
-
-
-QRegion KBalloonTipDelegate::inputShape(const KStyleOptionToolTip *option) const
-{
- QBitmap bitmap(option->rect.size());
- bitmap.fill(Qt::color0);
-
- QPainter p(&bitmap);
- p.setPen(QPen(Qt::color1, 1));
- p.setBrush(Qt::color1);
- p.drawPath(createPath(option));
-
- return QRegion(bitmap);
-}
-
-QRegion KBalloonTipDelegate::shapeMask(const KStyleOptionToolTip *option) const
-{
- return inputShape(option);
-}
-