diff options
Diffstat (limited to 'src/tooltips/kformattedballoontipdelegate.cpp')
| -rw-r--r-- | src/tooltips/kformattedballoontipdelegate.cpp | 129 |
1 files changed, 129 insertions, 0 deletions
diff --git a/src/tooltips/kformattedballoontipdelegate.cpp b/src/tooltips/kformattedballoontipdelegate.cpp new file mode 100644 index 000000000..140c90ef4 --- /dev/null +++ b/src/tooltips/kformattedballoontipdelegate.cpp @@ -0,0 +1,129 @@ +/******************************************************************************* + * 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 <QLinearGradient> +#include <QTextDocument> +#include <kcolorscheme.h> + +KFormattedBalloonTipDelegate::KFormattedBalloonTipDelegate() +{ +} + +KFormattedBalloonTipDelegate::~KFormattedBalloonTipDelegate() +{ +} + +QSize KFormattedBalloonTipDelegate::sizeHint(const KStyleOptionToolTip *option, const KToolTipItem *item) const +{ + QTextDocument doc; + doc.setHtml(item->text()); + const QIcon icon = item->icon(); + + const QSize iconSize = icon.isNull() ? QSize(0, 0) : icon.actualSize(option->decorationSize); + const QSize docSize = doc.size().toSize(); + QSize contentSize = iconSize + docSize; + + // assure that the content height is large enough for the icon and the document + contentSize.setHeight(iconSize.height() > doc.size().height() ? iconSize.height() : doc.size().height()); + return contentSize + QSize(Border * 3, Border * 2); +} + +void KFormattedBalloonTipDelegate::paint(QPainter *painter, + const KStyleOptionToolTip *option, + const KToolTipItem *item) const +{ + QPainterPath path = createPath(*option); + if (haveAlphaChannel()) { + painter->setRenderHint(QPainter::Antialiasing); + painter->translate(.5, .5); + } + + const QColor toColor = option->palette.brush(QPalette::ToolTipBase).color(); + const QColor fromColor = KColorScheme::shade(toColor, KColorScheme::LightShade, 0.2); + + QLinearGradient gradient(option->rect.topLeft(), option->rect.bottomLeft()); + gradient.setColorAt(0.0, fromColor); + gradient.setColorAt(1.0, toColor); + painter->setPen(Qt::NoPen); + painter->setBrush(gradient); + + painter->drawPath(path); + + const QIcon icon = item->icon(); + int x = Border; + const int y = Border; + if (!icon.isNull()) { + const QSize iconSize = icon.actualSize(option->decorationSize); + const QPoint pos(x + option->rect.x(), y + option->rect.y()); + painter->drawPixmap(pos, icon.pixmap(iconSize)); + x += iconSize.width() + Border; + } + + QTextDocument doc; + doc.setHtml(item->text()); + QPixmap bitmap(doc.size().toSize()); + bitmap.fill(Qt::transparent); + QPainter p(&bitmap); + doc.drawContents(&p); + + const QRect docRect(QPoint(x, y), doc.size().toSize()); + painter->drawPixmap(docRect, bitmap); +} + +QRegion KFormattedBalloonTipDelegate::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 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) const +{ + const QRect rect = option.rect; + 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(); + + return path; +} |