228 lines
9.2 KiB
C++
228 lines
9.2 KiB
C++
#include "framelesswidget2.h"
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#include "qevent.h"
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#include "qdebug.h"
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FramelessWidget2::FramelessWidget2(QObject *parent) : QObject(parent)
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{
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padding = 8;
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moveEnable = true;
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resizeEnable = true;
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widget = 0;
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mousePressed = false;
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mousePoint = QPoint(0, 0);
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mouseRect = QRect(0, 0, 0, 0);
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for (int i = 0; i < 8; ++i) {
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pressedArea << false;
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pressedRect << QRect(0, 0, 0, 0);
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}
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//如果父类是窗体则直接设置
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if (parent->isWidgetType()) {
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setWidget((QWidget *)parent);
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}
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}
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bool FramelessWidget2::eventFilter(QObject *watched, QEvent *event)
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{
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if (widget && watched == widget) {
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int type = event->type();
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if (type == QEvent::WindowStateChange) {
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//解决mac系统上无边框最小化失效的bug
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#ifdef Q_OS_MACOS
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if (widget->windowState() & Qt::WindowMinimized) {
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isMin = true;
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} else {
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if (isMin) {
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//设置无边框属性
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widget->setWindowFlags(flags | Qt::FramelessWindowHint);
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widget->setVisible(true);
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isMin = false;
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}
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}
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#endif
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} else if (type == QEvent::Resize) {
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//重新计算八个描点的区域,描点区域的作用还有就是计算鼠标坐标是否在某一个区域内
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int width = widget->width();
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int height = widget->height();
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//左侧描点区域
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pressedRect[0] = QRect(0, padding, padding, height - padding * 2);
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//右侧描点区域
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pressedRect[1] = QRect(width - padding, padding, padding, height - padding * 2);
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//上侧描点区域
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pressedRect[2] = QRect(padding, 0, width - padding * 2, padding);
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//下侧描点区域
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pressedRect[3] = QRect(padding, height - padding, width - padding * 2, padding);
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//左上角描点区域
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pressedRect[4] = QRect(0, 0, padding, padding);
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//右上角描点区域
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pressedRect[5] = QRect(width - padding, 0, padding, padding);
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//左下角描点区域
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pressedRect[6] = QRect(0, height - padding, padding, padding);
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//右下角描点区域
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pressedRect[7] = QRect(width - padding, height - padding, padding, padding);
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} else if (type == QEvent::HoverMove) {
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//设置对应鼠标形状,这个必须放在这里而不是下面,因为可以在鼠标没有按下的时候识别
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QHoverEvent *hoverEvent = (QHoverEvent *)event;
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QPoint point = hoverEvent->pos();
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if (resizeEnable) {
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if (pressedRect.at(0).contains(point)) {
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widget->setCursor(Qt::SizeHorCursor);
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} else if (pressedRect.at(1).contains(point)) {
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widget->setCursor(Qt::SizeHorCursor);
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} else if (pressedRect.at(2).contains(point)) {
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widget->setCursor(Qt::SizeVerCursor);
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} else if (pressedRect.at(3).contains(point)) {
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widget->setCursor(Qt::SizeVerCursor);
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} else if (pressedRect.at(4).contains(point)) {
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widget->setCursor(Qt::SizeFDiagCursor);
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} else if (pressedRect.at(5).contains(point)) {
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widget->setCursor(Qt::SizeBDiagCursor);
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} else if (pressedRect.at(6).contains(point)) {
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widget->setCursor(Qt::SizeBDiagCursor);
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} else if (pressedRect.at(7).contains(point)) {
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widget->setCursor(Qt::SizeFDiagCursor);
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} else {
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widget->setCursor(Qt::ArrowCursor);
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}
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}
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//根据当前鼠标位置,计算XY轴移动了多少
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int offsetX = point.x() - mousePoint.x();
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int offsetY = point.y() - mousePoint.y();
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//根据按下处的位置判断是否是移动控件还是拉伸控件
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if (moveEnable && mousePressed) {
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widget->move(widget->x() + offsetX, widget->y() + offsetY);
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}
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if (resizeEnable) {
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int rectX = mouseRect.x();
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int rectY = mouseRect.y();
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int rectW = mouseRect.width();
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int rectH = mouseRect.height();
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if (pressedArea.at(0)) {
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int resizeW = widget->width() - offsetX;
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if (widget->minimumWidth() <= resizeW) {
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widget->setGeometry(widget->x() + offsetX, rectY, resizeW, rectH);
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}
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} else if (pressedArea.at(1)) {
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widget->setGeometry(rectX, rectY, rectW + offsetX, rectH);
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} else if (pressedArea.at(2)) {
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int resizeH = widget->height() - offsetY;
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if (widget->minimumHeight() <= resizeH) {
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widget->setGeometry(rectX, widget->y() + offsetY, rectW, resizeH);
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}
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} else if (pressedArea.at(3)) {
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widget->setGeometry(rectX, rectY, rectW, rectH + offsetY);
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} else if (pressedArea.at(4)) {
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int resizeW = widget->width() - offsetX;
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int resizeH = widget->height() - offsetY;
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if (widget->minimumWidth() <= resizeW) {
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widget->setGeometry(widget->x() + offsetX, widget->y(), resizeW, resizeH);
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}
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if (widget->minimumHeight() <= resizeH) {
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widget->setGeometry(widget->x(), widget->y() + offsetY, resizeW, resizeH);
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}
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} else if (pressedArea.at(5)) {
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int resizeW = rectW + offsetX;
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int resizeH = widget->height() - offsetY;
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if (widget->minimumHeight() <= resizeH) {
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widget->setGeometry(widget->x(), widget->y() + offsetY, resizeW, resizeH);
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}
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} else if (pressedArea.at(6)) {
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int resizeW = widget->width() - offsetX;
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int resizeH = rectH + offsetY;
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if (widget->minimumWidth() <= resizeW) {
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widget->setGeometry(widget->x() + offsetX, widget->y(), resizeW, resizeH);
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}
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if (widget->minimumHeight() <= resizeH) {
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widget->setGeometry(widget->x(), widget->y(), resizeW, resizeH);
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}
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} else if (pressedArea.at(7)) {
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int resizeW = rectW + offsetX;
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int resizeH = rectH + offsetY;
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widget->setGeometry(widget->x(), widget->y(), resizeW, resizeH);
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}
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}
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} else if (type == QEvent::MouseButtonPress) {
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//记住鼠标按下的坐标+窗体区域
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QMouseEvent *mouseEvent = (QMouseEvent *)event;
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mousePoint = mouseEvent->pos();
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mouseRect = widget->geometry();
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//判断按下的手柄的区域位置
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if (pressedRect.at(0).contains(mousePoint)) {
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pressedArea[0] = true;
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} else if (pressedRect.at(1).contains(mousePoint)) {
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pressedArea[1] = true;
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} else if (pressedRect.at(2).contains(mousePoint)) {
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pressedArea[2] = true;
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} else if (pressedRect.at(3).contains(mousePoint)) {
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pressedArea[3] = true;
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} else if (pressedRect.at(4).contains(mousePoint)) {
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pressedArea[4] = true;
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} else if (pressedRect.at(5).contains(mousePoint)) {
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pressedArea[5] = true;
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} else if (pressedRect.at(6).contains(mousePoint)) {
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pressedArea[6] = true;
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} else if (pressedRect.at(7).contains(mousePoint)) {
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pressedArea[7] = true;
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} else {
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mousePressed = true;
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}
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} else if (type == QEvent::MouseMove) {
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//改成用HoverMove识别
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} else if (type == QEvent::MouseButtonRelease) {
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//恢复所有
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widget->setCursor(Qt::ArrowCursor);
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mousePressed = false;
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for (int i = 0; i < 8; ++i) {
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pressedArea[i] = false;
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}
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}
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}
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return QObject::eventFilter(watched, event);
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}
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void FramelessWidget2::setPadding(int padding)
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{
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this->padding = padding;
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}
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void FramelessWidget2::setMoveEnable(bool moveEnable)
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{
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this->moveEnable = moveEnable;
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}
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void FramelessWidget2::setResizeEnable(bool resizeEnable)
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{
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this->resizeEnable = resizeEnable;
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}
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void FramelessWidget2::setMousePressed(bool mousePressed)
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{
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this->mousePressed = mousePressed;
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}
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void FramelessWidget2::setWidget(QWidget *widget)
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{
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if (this->widget == 0) {
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this->widget = widget;
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//设置鼠标追踪为真
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this->widget->setMouseTracking(true);
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//绑定事件过滤器
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this->widget->installEventFilter(this);
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//设置悬停为真,必须设置这个,不然当父窗体里边还有子窗体全部遮挡了识别不到MouseMove,需要识别HoverMove
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this->widget->setAttribute(Qt::WA_Hover, true);
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isMin = false;
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flags = widget->windowFlags();
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}
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}
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