imovewindow.cpp
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#include "IMoveWindow.h"
IMoveWindow::IMoveWindow(QWidget *parent) :
QMainWindow(parent)
{
isLeftPressDown = false;
this->dir = NONE;
this->setMinimumHeight(700);
this->setMinimumWidth(1000);
this->setWindowFlags(Qt::FramelessWindowHint|Qt::WindowSystemMenuHint );
this->setMouseTracking(true);
}
IMoveWindow::~IMoveWindow()
{
}
void IMoveWindow::mouseReleaseEvent(QMouseEvent *event)
{
if(event->button() == Qt::LeftButton) {
isLeftPressDown = false;
if(dir != NONE) {
this->releaseMouse();
this->setCursor(QCursor(Qt::ArrowCursor));
}
}
}
void IMoveWindow::mousePressEvent(QMouseEvent *event)
{
switch(event->button()) {
case Qt::LeftButton:
isLeftPressDown = true;
if(dir != NONE) {
this->mouseGrabber();
} else {
dragPosition = event->globalPos() - this->frameGeometry().topLeft();
}
break;
case Qt::RightButton:
this->close();
break;
default:
QMainWindow::mousePressEvent(event);
}
}
void IMoveWindow::mouseMoveEvent(QMouseEvent *event)
{
QPoint gloPoint = event->globalPos();
QRect rect = this->rect();
QPoint tl = mapToGlobal(rect.topLeft());
QPoint rb = mapToGlobal(rect.bottomRight());
if(!isLeftPressDown) {
this->region(gloPoint);
} else {
if(dir != NONE) {
QRect rMove(tl, rb);
switch(dir) {
case LEFT:
if(rb.x() - gloPoint.x() <= this->minimumWidth())
rMove.setX(tl.x());
else
rMove.setX(gloPoint.x());
break;
case RIGHT:
rMove.setWidth(gloPoint.x() - tl.x());
break;
case UP:
if(rb.y() - gloPoint.y() <= this->minimumHeight())
rMove.setY(tl.y());
else
rMove.setY(gloPoint.y());
break;
case DOWN:
rMove.setHeight(gloPoint.y() - tl.y());
break;
case LEFTTOP:
if(rb.x() - gloPoint.x() <= this->minimumWidth())
rMove.setX(tl.x());
else
rMove.setX(gloPoint.x());
if(rb.y() - gloPoint.y() <= this->minimumHeight())
rMove.setY(tl.y());
else
rMove.setY(gloPoint.y());
break;
case RIGHTTOP:
rMove.setWidth(gloPoint.x() - tl.x());
rMove.setY(gloPoint.y());
break;
case LEFTBOTTOM:
rMove.setX(gloPoint.x());
rMove.setHeight(gloPoint.y() - tl.y());
break;
case RIGHTBOTTOM:
rMove.setWidth(gloPoint.x() - tl.x());
rMove.setHeight(gloPoint.y() - tl.y());
break;
default:
break;
}
this->setGeometry(rMove);
} else {
move(event->globalPos() - dragPosition);
event->accept();
}
}
QMainWindow::mouseMoveEvent(event);
}
void IMoveWindow::region(const QPoint &cursorGlobalPoint)
{
QRect rect = this->rect();
QPoint tl = mapToGlobal(rect.topLeft());
QPoint rb = mapToGlobal(rect.bottomRight());
int x = cursorGlobalPoint.x();
int y = cursorGlobalPoint.y();
if(tl.x() + PADDING >= x && tl.x() <= x && tl.y() + PADDING >= y && tl.y() <= y) {
// 左上角
dir = LEFTTOP;
this->setCursor(QCursor(Qt::SizeFDiagCursor));
} else if(x >= rb.x() - PADDING && x <= rb.x() && y >= rb.y() - PADDING && y <= rb.y()) {
// 右下角
dir = RIGHTBOTTOM;
this->setCursor(QCursor(Qt::SizeFDiagCursor));
} else if(x <= tl.x() + PADDING && x >= tl.x() && y >= rb.y() - PADDING && y <= rb.y()) {
//左下角
dir = LEFTBOTTOM;
this->setCursor(QCursor(Qt::SizeBDiagCursor));
} else if(x <= rb.x() && x >= rb.x() - PADDING && y >= tl.y() && y <= tl.y() + PADDING) {
// 右上角
dir = RIGHTTOP;
this->setCursor(QCursor(Qt::SizeBDiagCursor));
} else if(x <= tl.x() + PADDING && x >= tl.x()) {
// 左边
dir = LEFT;
this->setCursor(QCursor(Qt::SizeHorCursor));
} else if( x <= rb.x() && x >= rb.x() - PADDING) {
// 右边
dir = RIGHT;
this->setCursor(QCursor(Qt::SizeHorCursor));
}else if(y >= tl.y() && y <= tl.y() + PADDING){
// 上边
dir = UP;
this->setCursor(QCursor(Qt::SizeVerCursor));
} else if(y <= rb.y() && y >= rb.y() - PADDING) {
// 下边
dir = DOWN;
this->setCursor(QCursor(Qt::SizeVerCursor));
}else {
// 默认
dir = NONE;
this->setCursor(QCursor(Qt::ArrowCursor));
}
}