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140 lines
4.3 KiB
C++

/******************************************************************************
* The MIT License (MIT)
*
* Copyright (c) 2026 Baldur Karlsson
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
******************************************************************************/
#include "RDToolTip.h"
#include <QApplication>
#include <QDesktopWidget>
#include <QMouseEvent>
#include <QProxyStyle>
#include <QStyleOptionFrame>
#include <QStylePainter>
void ICustomToolTipDisplay::showTip(QWidget *widget, QString text, QModelIndex idx)
{
QPoint p = QCursor::pos();
// estimate, as this is not easily queryable
const QPoint cursorSize(16, 16);
const QRect screenAvailGeom = QApplication::desktop()->availableGeometry(p);
// start with the tooltip placed bottom-right of the cursor, as the default
QRect tooltipRect;
tooltipRect.setTopLeft(p + cursorSize);
tooltipRect.setSize(configureTip(widget, text, idx));
// clip by the available geometry in x
if(tooltipRect.right() > screenAvailGeom.right())
tooltipRect.moveRight(screenAvailGeom.right());
// if we'd go out of bounds in y, place the tooltip above the cursor. Don't just clip like
// in x, because that could place the tooltip over the cursor.
if(tooltipRect.bottom() > screenAvailGeom.bottom())
tooltipRect.moveBottom(p.y() - cursorSize.y());
showTipAtPos(tooltipRect.topLeft());
}
RDToolTip::RDToolTip(QWidget *listener) : QLabel(NULL), mouseListener(listener)
{
int margin = style()->pixelMetric(QStyle::PM_ToolTipLabelFrameWidth, NULL, this);
int opacity = style()->styleHint(QStyle::SH_ToolTipLabel_Opacity, NULL, this);
setWindowFlags(Qt::ToolTip | Qt::WindowDoesNotAcceptFocus);
setAttribute(Qt::WA_TransparentForMouseEvents);
setForegroundRole(QPalette::ToolTipText);
setBackgroundRole(QPalette::ToolTipBase);
setMargin(margin + 1);
setFrameStyle(QFrame::NoFrame);
setAlignment(Qt::AlignLeft);
setIndent(1);
setWindowOpacity(opacity / 255.0);
}
QSize RDToolTip::configureTip(QWidget *, QString text, QModelIndex)
{
setText(text);
QSize ret = minimumSizeHint();
resize(ret);
return ret;
}
void RDToolTip::showTipAtPos(QPoint pos)
{
move(pos);
show();
}
bool RDToolTip::forceTip(QWidget *widget, QModelIndex idx)
{
return false;
}
void RDToolTip::paintEvent(QPaintEvent *ev)
{
QStylePainter p(this);
QStyleOptionFrame opt;
opt.init(this);
p.drawPrimitive(QStyle::PE_PanelTipLabel, opt);
p.end();
QLabel::paintEvent(ev);
}
void RDToolTip::mousePressEvent(QMouseEvent *e)
{
if(mouseListener)
sendListenerEvent(e);
}
void RDToolTip::sendListenerEvent(QMouseEvent *e)
{
QMouseEvent *duplicate =
new QMouseEvent(e->type(), mouseListener->mapFromGlobal(e->globalPos()), e->windowPos(),
e->globalPos(), e->button(), e->buttons(), e->modifiers(), e->source());
QCoreApplication::postEvent(mouseListener, duplicate);
}
void RDToolTip::mouseReleaseEvent(QMouseEvent *e)
{
if(mouseListener)
sendListenerEvent(e);
}
void RDToolTip::mouseDoubleClickEvent(QMouseEvent *e)
{
if(mouseListener)
sendListenerEvent(e);
}
void RDToolTip::resizeEvent(QResizeEvent *e)
{
QStyleHintReturnMask frameMask;
QStyleOption option;
option.init(this);
if(style()->styleHint(QStyle::SH_ToolTip_Mask, &option, this, &frameMask))
setMask(frameMask.region);
QLabel::resizeEvent(e);
}