328 lines
7.6 KiB
C++
328 lines
7.6 KiB
C++
#pragma execution_character_set("utf-8")
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#include "screenwidget.h"
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#include "qmutex.h"
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#include "qapplication.h"
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#include "qpainter.h"
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#include "qdesktopwidget.h"
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#include "qfiledialog.h"
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#include "qevent.h"
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#include "qdatetime.h"
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#include "qstringlist.h"
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#if (QT_VERSION > QT_VERSION_CHECK(5,0,0))
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#include "qscreen.h"
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#endif
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#define STRDATETIME qPrintable (QDateTime::currentDateTime().toString("yyyy-MM-dd-HH-mm-ss"))
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Screen::Screen(QSize size)
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{
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maxWidth = size.width();
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maxHeight = size.height();
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startPos = QPoint(-1, -1);
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endPos = startPos;
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leftUpPos = startPos;
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rightDownPos = startPos;
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status = SELECT;
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}
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int Screen::width()
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{
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return maxWidth;
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}
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int Screen::height()
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{
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return maxHeight;
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}
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Screen::STATUS Screen::getStatus()
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{
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return status;
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}
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void Screen::setStatus(STATUS status)
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{
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this->status = status;
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}
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void Screen::setEnd(QPoint pos)
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{
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endPos = pos;
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leftUpPos = startPos;
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rightDownPos = endPos;
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cmpPoint(leftUpPos, rightDownPos);
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}
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void Screen::setStart(QPoint pos)
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{
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startPos = pos;
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}
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QPoint Screen::getEnd()
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{
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return endPos;
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}
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QPoint Screen::getStart()
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{
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return startPos;
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}
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QPoint Screen::getLeftUp()
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{
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return leftUpPos;
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}
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QPoint Screen::getRightDown()
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{
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return rightDownPos;
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}
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bool Screen::isInArea(QPoint pos)
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{
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if (pos.x() > leftUpPos.x() && pos.x() < rightDownPos.x() && pos.y() > leftUpPos.y() && pos.y() < rightDownPos.y()) {
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return true;
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}
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return false;
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}
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void Screen::move(QPoint p)
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{
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int lx = leftUpPos.x() + p.x();
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int ly = leftUpPos.y() + p.y();
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int rx = rightDownPos.x() + p.x();
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int ry = rightDownPos.y() + p.y();
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if (lx < 0) {
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lx = 0;
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rx -= p.x();
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}
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if (ly < 0) {
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ly = 0;
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ry -= p.y();
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}
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if (rx > maxWidth) {
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rx = maxWidth;
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lx -= p.x();
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}
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if (ry > maxHeight) {
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ry = maxHeight;
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ly -= p.y();
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}
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leftUpPos = QPoint(lx, ly);
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rightDownPos = QPoint(rx, ry);
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startPos = leftUpPos;
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endPos = rightDownPos;
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}
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void Screen::cmpPoint(QPoint &leftTop, QPoint &rightDown)
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{
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QPoint l = leftTop;
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QPoint r = rightDown;
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if (l.x() <= r.x()) {
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if (l.y() <= r.y()) {
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;
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} else {
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leftTop.setY(r.y());
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rightDown.setY(l.y());
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}
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} else {
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if (l.y() < r.y()) {
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leftTop.setX(r.x());
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rightDown.setX(l.x());
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} else {
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QPoint tmp;
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tmp = leftTop;
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leftTop = rightDown;
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rightDown = tmp;
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}
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}
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}
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QScopedPointer<ScreenWidget> ScreenWidget::self;
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ScreenWidget *ScreenWidget::Instance()
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{
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if (self.isNull()) {
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static QMutex mutex;
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QMutexLocker locker(&mutex);
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if (self.isNull()) {
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self.reset(new ScreenWidget);
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}
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}
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return self.data();
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}
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ScreenWidget::ScreenWidget(QWidget *parent) : QWidget(parent)
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{
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//this->setWindowFlags(Qt::Tool | Qt::WindowStaysOnTopHint | Qt::FramelessWindowHint | Qt::X11BypassWindowManagerHint);
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menu = new QMenu(this);
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menu->addAction("保存当前截图", this, SLOT(saveScreen()));
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menu->addAction("保存全屏截图", this, SLOT(saveFullScreen()));
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menu->addAction("截图另存为", this, SLOT(saveScreenOther()));
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menu->addAction("全屏另存为", this, SLOT(saveFullOther()));
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menu->addAction("退出截图", this, SLOT(hide()));
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//取得屏幕大小
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screen = new Screen(QApplication::desktop()->size());
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//保存全屏图像
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fullScreen = new QPixmap();
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}
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void ScreenWidget::paintEvent(QPaintEvent *)
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{
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int x = screen->getLeftUp().x();
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int y = screen->getLeftUp().y();
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int w = screen->getRightDown().x() - x;
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int h = screen->getRightDown().y() - y;
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QPainter painter(this);
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QPen pen;
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pen.setColor(Qt::green);
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pen.setWidth(2);
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pen.setStyle(Qt::DotLine);
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painter.setPen(pen);
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painter.drawPixmap(0, 0, *bgScreen);
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if (w != 0 && h != 0) {
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painter.drawPixmap(x, y, fullScreen->copy(x, y, w, h));
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}
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painter.drawRect(x, y, w, h);
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pen.setColor(Qt::yellow);
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painter.setPen(pen);
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painter.drawText(x + 2, y - 8, tr("截图范围：( %1 x %2 ) - ( %3 x %4 ) 图片大小：( %5 x %6 )")
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.arg(x).arg(y).arg(x + w).arg(y + h).arg(w).arg(h));
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}
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void ScreenWidget::showEvent(QShowEvent *)
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{
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QPoint point(-1, -1);
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screen->setStart(point);
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screen->setEnd(point);
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#if (QT_VERSION <= QT_VERSION_CHECK(5,0,0))
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*fullScreen = fullScreen->grabWindow(QApplication::desktop()->winId(), 0, 0, screen->width(), screen->height());
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#else
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QScreen *pscreen = QApplication::primaryScreen();
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*fullScreen = pscreen->grabWindow(QApplication::desktop()->winId(), 0, 0, screen->width(), screen->height());
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#endif
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//设置透明度实现模糊背景
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QPixmap pix(screen->width(), screen->height());
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pix.fill((QColor(160, 160, 160, 200)));
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bgScreen = new QPixmap(*fullScreen);
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QPainter p(bgScreen);
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p.drawPixmap(0, 0, pix);
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}
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void ScreenWidget::saveScreen()
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{
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int x = screen->getLeftUp().x();
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int y = screen->getLeftUp().y();
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int w = screen->getRightDown().x() - x;
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int h = screen->getRightDown().y() - y;
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QString fileName = QString("%1/screen_%2.png").arg(qApp->applicationDirPath()).arg(STRDATETIME);
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fullScreen->copy(x, y, w, h).save(fileName, "png");
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close();
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}
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void ScreenWidget::saveFullScreen()
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{
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QString fileName = QString("%1/full_%2.png").arg(qApp->applicationDirPath()).arg(STRDATETIME);
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fullScreen->save(fileName, "png");
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close();
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}
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void ScreenWidget::saveScreenOther()
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{
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QString name = QString("%1.png").arg(STRDATETIME);
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QString fileName = QFileDialog::getSaveFileName(this, "保存图片", name, "png Files (*.png)");
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if (!fileName.endsWith(".png")) {
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fileName += ".png";
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}
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if (fileName.length() > 0) {
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int x = screen->getLeftUp().x();
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int y = screen->getLeftUp().y();
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int w = screen->getRightDown().x() - x;
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int h = screen->getRightDown().y() - y;
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fullScreen->copy(x, y, w, h).save(fileName, "png");
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close();
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}
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}
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void ScreenWidget::saveFullOther()
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{
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QString name = QString("%1.png").arg(STRDATETIME);
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QString fileName = QFileDialog::getSaveFileName(this, "保存图片", name, "png Files (*.png)");
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if (!fileName.endsWith(".png")) {
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fileName += ".png";
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}
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if (fileName.length() > 0) {
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fullScreen->save(fileName, "png");
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close();
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}
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}
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void ScreenWidget::mouseMoveEvent(QMouseEvent *e)
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{
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if (screen->getStatus() == Screen::SELECT) {
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screen->setEnd(e->pos());
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} else if (screen->getStatus() == Screen::MOV) {
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QPoint p(e->x() - movPos.x(), e->y() - movPos.y());
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screen->move(p);
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movPos = e->pos();
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}
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this->update();
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}
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void ScreenWidget::mousePressEvent(QMouseEvent *e)
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{
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int status = screen->getStatus();
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if (status == Screen::SELECT) {
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screen->setStart(e->pos());
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} else if (status == Screen::MOV) {
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if (screen->isInArea(e->pos()) == false) {
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screen->setStart(e->pos());
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screen->setStatus(Screen::SELECT);
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} else {
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movPos = e->pos();
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this->setCursor(Qt::SizeAllCursor);
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}
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}
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this->update();
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}
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void ScreenWidget::mouseReleaseEvent(QMouseEvent *)
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{
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if (screen->getStatus() == Screen::SELECT) {
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screen->setStatus(Screen::MOV);
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} else if (screen->getStatus() == Screen::MOV) {
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this->setCursor(Qt::ArrowCursor);
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}
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}
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void ScreenWidget::contextMenuEvent(QContextMenuEvent *)
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{
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this->setCursor(Qt::ArrowCursor);
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menu->exec(cursor().pos());
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}
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