mirror of
https://github.com/f4exb/sdrangel.git
synced 2024-11-14 12:22:00 -05:00
281 lines
8.9 KiB
C++
281 lines
8.9 KiB
C++
///////////////////////////////////////////////////////////////////////////////////
|
|
// Copyright (C) 2022-2023 Jon Beniston, M7RCE <jon@beniston.com> //
|
|
// Copyright (C) 2022 Edouard Griffiths, F4EXB <f4exb06@gmail.com> //
|
|
// //
|
|
// 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 as version 3 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 V3 for more details. //
|
|
// //
|
|
// You should have received a copy of the GNU General Public License //
|
|
// along with this program. If not, see <http://www.gnu.org/licenses/>. //
|
|
///////////////////////////////////////////////////////////////////////////////////
|
|
|
|
#include <QGuiApplication>
|
|
#include <QLayout>
|
|
#include <QTableWidget>
|
|
|
|
#include "framelesswindowresizer.h"
|
|
|
|
FramelessWindowResizer::FramelessWindowResizer(QWidget *widget) :
|
|
m_widget(widget),
|
|
m_vResizing(false),
|
|
m_hResizing(false),
|
|
m_vMove(false),
|
|
m_hMove(false),
|
|
m_cursor(nullptr),
|
|
m_vCursor(Qt::SizeVerCursor),
|
|
m_hCursor(Qt::SizeHorCursor),
|
|
m_bCursor(Qt::SizeBDiagCursor),
|
|
m_fCursor(Qt::SizeFDiagCursor)
|
|
{
|
|
}
|
|
|
|
void FramelessWindowResizer::enableChildMouseTracking()
|
|
{
|
|
QList<QWidget *> widgets = m_widget->findChildren<QWidget *>();
|
|
for (auto widget : widgets) {
|
|
widget->setMouseTracking(true);
|
|
}
|
|
// QTableWidgets don't send us mouseMoveEvents for some unknown reason
|
|
// so install an event filter on their viewport
|
|
QList<QTableWidget *> tables = m_widget->findChildren<QTableWidget *>();
|
|
for (auto table : tables)
|
|
{
|
|
table->viewport()->setMouseTracking(true);
|
|
table->viewport()->installEventFilter(this);
|
|
}
|
|
}
|
|
|
|
bool FramelessWindowResizer::mouseOnTopBorder(QPoint pos) const
|
|
{
|
|
return ((pos.y() >= 0) && (pos.y() < m_gripSize)
|
|
&& (m_widget->sizePolicy().verticalPolicy() != QSizePolicy::Fixed));
|
|
}
|
|
|
|
bool FramelessWindowResizer::mouseOnBottomBorder(QPoint pos) const
|
|
{
|
|
return ((pos.y() > m_widget->height() - 1 - m_gripSize) && (pos.y() < m_widget->height())
|
|
&& (m_widget->sizePolicy().verticalPolicy() != QSizePolicy::Fixed));
|
|
}
|
|
|
|
bool FramelessWindowResizer::mouseOnLeftBorder(QPoint pos) const
|
|
{
|
|
return ((pos.x() >= 0) && (pos.x() < m_gripSize)
|
|
&& (m_widget->sizePolicy().horizontalPolicy() != QSizePolicy::Fixed));
|
|
}
|
|
|
|
bool FramelessWindowResizer::mouseOnRightBorder(QPoint pos) const
|
|
{
|
|
return ((pos.x() > m_widget->width() - 1 - m_gripSize) && (pos.x() < m_widget->width())
|
|
&& (m_widget->sizePolicy().horizontalPolicy() != QSizePolicy::Fixed));
|
|
}
|
|
|
|
bool FramelessWindowResizer::mouseOnBorder(QPoint pos) const
|
|
{
|
|
return mouseOnTopBorder(pos) || mouseOnBottomBorder(pos)
|
|
|| mouseOnLeftBorder(pos) || mouseOnRightBorder(pos);
|
|
}
|
|
|
|
void FramelessWindowResizer::setCursor(const QCursor &cursor)
|
|
{
|
|
if (m_cursor != &cursor)
|
|
{
|
|
if (m_cursor != nullptr) {
|
|
QGuiApplication::restoreOverrideCursor();
|
|
}
|
|
QGuiApplication::setOverrideCursor(cursor);
|
|
m_cursor = &cursor;
|
|
}
|
|
}
|
|
|
|
void FramelessWindowResizer::clearCursor()
|
|
{
|
|
if (m_cursor)
|
|
{
|
|
QGuiApplication::restoreOverrideCursor();
|
|
m_cursor = nullptr;
|
|
}
|
|
}
|
|
|
|
void FramelessWindowResizer::mousePressEvent(QMouseEvent* event)
|
|
{
|
|
if ((event->buttons() & Qt::LeftButton) && mouseOnBorder(event->pos()))
|
|
{
|
|
if (mouseOnTopBorder(event->pos()) || mouseOnBottomBorder(event->pos())) {
|
|
m_vResizing = true;
|
|
}
|
|
if (mouseOnLeftBorder(event->pos()) || mouseOnRightBorder(event->pos())) {
|
|
m_hResizing = true;
|
|
}
|
|
if (mouseOnTopBorder(event->pos()))
|
|
{
|
|
m_vMove = true;
|
|
// Calculate difference between mouse position and top left corner of widget
|
|
m_mouseOffsetToPos = event->globalPos() - m_widget->pos();
|
|
}
|
|
if (mouseOnLeftBorder(event->pos()))
|
|
{
|
|
m_hMove = true;
|
|
m_mouseOffsetToPos = event->globalPos() - m_widget->pos();
|
|
}
|
|
// Save coords of bottom/right of widget
|
|
m_origBottomRight.setX(m_widget->pos().x() + m_widget->width());
|
|
m_origBottomRight.setY(m_widget->pos().y() + m_widget->height());
|
|
|
|
m_initialMousePos = event->globalPos();
|
|
m_initRect = m_widget->rect();
|
|
|
|
event->accept();
|
|
}
|
|
}
|
|
|
|
void FramelessWindowResizer::mouseReleaseEvent(QMouseEvent* event)
|
|
{
|
|
if (!(event->buttons() & Qt::LeftButton))
|
|
{
|
|
m_vResizing = false;
|
|
m_hResizing = false;
|
|
m_vMove = false;
|
|
m_hMove = false;
|
|
}
|
|
}
|
|
|
|
void FramelessWindowResizer::leaveEvent(QEvent*)
|
|
{
|
|
clearCursor();
|
|
}
|
|
|
|
bool FramelessWindowResizer::eventFilter(QObject *obj, QEvent *event)
|
|
{
|
|
if (event->type() == QEvent::MouseMove)
|
|
{
|
|
// Mouse moving over child table widget
|
|
clearCursor();
|
|
}
|
|
return QObject::eventFilter(obj, event);
|
|
}
|
|
|
|
void FramelessWindowResizer::mouseMoveEvent(QMouseEvent* event)
|
|
{
|
|
if (m_vResizing || m_hResizing)
|
|
{
|
|
|
|
int x, y;
|
|
|
|
// Calculate resize requested
|
|
int w = m_initRect.width();
|
|
int h = m_initRect.height();
|
|
QPoint delta = event->globalPos() - m_initialMousePos;
|
|
|
|
x = delta.x();
|
|
y = delta.y();
|
|
if (m_hMove) {
|
|
x = -x;
|
|
}
|
|
if (m_vMove) {
|
|
y = -y;
|
|
}
|
|
if (m_hResizing) {
|
|
w += x;
|
|
}
|
|
if (m_vResizing) {
|
|
h += y;
|
|
}
|
|
QSize reqSize(w, h);
|
|
|
|
// Get min and max size we can resize to
|
|
QSize minSize, maxSize;
|
|
|
|
if (m_widget->layout())
|
|
{
|
|
//minSize = m_widget->layout()->minimumSize();
|
|
maxSize = m_widget->layout()->maximumSize();
|
|
}
|
|
else
|
|
{
|
|
//minSize = m_widget->minimumSize();
|
|
maxSize = m_widget->maximumSize();
|
|
}
|
|
minSize = m_widget->minimumSizeHint(); // Need to use minimumSizeHint for FlowLayout to work
|
|
|
|
// Limit requested to size to allowed min/max
|
|
QSize size = reqSize;
|
|
size = size.expandedTo(minSize);
|
|
size = size.boundedTo(maxSize);
|
|
|
|
// Prevent vertical expansion of vertically fixed widgets
|
|
if (m_widget->sizePolicy().verticalPolicy() == QSizePolicy::Fixed) {
|
|
size.setHeight(m_widget->sizeHint().height());
|
|
}
|
|
|
|
// Prevent horizontal expansion of horizontal fixed widgets
|
|
if (m_widget->sizePolicy().horizontalPolicy() == QSizePolicy::Fixed) {
|
|
size.setWidth(m_widget->sizeHint().width());
|
|
}
|
|
|
|
// Move
|
|
if (m_vMove || m_hMove)
|
|
{
|
|
if (m_hMove)
|
|
{
|
|
x = event->globalPos().x() - m_mouseOffsetToPos.x();
|
|
|
|
if (x + minSize.width() > m_origBottomRight.x()) {
|
|
x = m_origBottomRight.x() - minSize.width();
|
|
}
|
|
}
|
|
else
|
|
{
|
|
x = m_widget->pos().x();
|
|
}
|
|
if (m_vMove)
|
|
{
|
|
y = event->globalPos().y() - m_mouseOffsetToPos.y();
|
|
|
|
if (y + minSize.height() > m_origBottomRight.y()) {
|
|
y = m_origBottomRight.y() - minSize.height();
|
|
}
|
|
}
|
|
else
|
|
{
|
|
y = m_widget->pos().y();
|
|
}
|
|
m_widget->move(x, y);
|
|
}
|
|
|
|
m_widget->resize(size);
|
|
event->accept();
|
|
}
|
|
else
|
|
{
|
|
QPoint pos = event->pos();
|
|
if (mouseOnBorder(pos))
|
|
{
|
|
// Set cursor according to edge or corner mouse is over
|
|
if (mouseOnTopBorder(pos) && mouseOnRightBorder(pos)) {
|
|
setCursor(m_bCursor);
|
|
} else if (mouseOnTopBorder(pos) && mouseOnLeftBorder(pos)) {
|
|
setCursor(m_fCursor);
|
|
} else if (mouseOnBottomBorder(pos) && mouseOnRightBorder(pos)) {
|
|
setCursor(m_fCursor);
|
|
} else if (mouseOnBottomBorder(pos) && mouseOnLeftBorder(pos)) {
|
|
setCursor(m_bCursor);
|
|
} else if (mouseOnTopBorder(pos) || mouseOnBottomBorder(pos)) {
|
|
setCursor(m_vCursor);
|
|
} else if (mouseOnLeftBorder(pos) || mouseOnRightBorder(pos)) {
|
|
setCursor(m_hCursor);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
clearCursor();
|
|
}
|
|
}
|
|
}
|