彻底改版2.0

widget/screenwidget/frmscreenwidget.cpp

@@ -0,0 +1,18 @@
+#include "frmscreenwidget.h"
+#include "ui_frmscreenwidget.h"
+#include "screenwidget.h"
+
+frmScreenWidget::frmScreenWidget(QWidget *parent) : QWidget(parent), ui(new Ui::frmScreenWidget)
+{
+    ui->setupUi(this);
+}
+
+frmScreenWidget::~frmScreenWidget()
+{
+    delete ui;
+}
+
+void frmScreenWidget::on_pushButton_clicked()
+{
+    ScreenWidget::Instance()->showFullScreen();
+}

widget/screenwidget/frmscreenwidget.h

@@ -0,0 +1,25 @@
+#ifndef FRMSCREENWIDGET_H
+#define FRMSCREENWIDGET_H
+
+#include <QWidget>
+
+namespace Ui {
+class frmScreenWidget;
+}
+
+class frmScreenWidget : public QWidget
+{
+    Q_OBJECT
+
+public:
+    explicit frmScreenWidget(QWidget *parent = 0);
+    ~frmScreenWidget();
+
+private slots:
+    void on_pushButton_clicked();
+
+private:
+    Ui::frmScreenWidget *ui;
+};
+
+#endif // FRMSCREENWIDGET_H

widget/screenwidget/frmscreenwidget.ui

@@ -0,0 +1,32 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<ui version="4.0">
+ <class>frmScreenWidget</class>
+ <widget class="QWidget" name="frmScreenWidget">
+  <property name="geometry">
+   <rect>
+    <x>0</x>
+    <y>0</y>
+    <width>800</width>
+    <height>600</height>
+   </rect>
+  </property>
+  <property name="windowTitle">
+   <string>Form</string>
+  </property>
+  <widget class="QPushButton" name="pushButton">
+   <property name="geometry">
+    <rect>
+     <x>10</x>
+     <y>10</y>
+     <width>92</width>
+     <height>28</height>
+    </rect>
+   </property>
+   <property name="text">
+    <string>弹出</string>
+   </property>
+  </widget>
+ </widget>
+ <resources/>
+ <connections/>
+</ui>

widget/screenwidget/main.cpp

@@ -0,0 +1,31 @@
+#pragma execution_character_set("utf-8")
+
+#include "frmscreenwidget.h"
+#include <QApplication>
+#include <QTextCodec>
+
+int main(int argc, char *argv[])
+{
+    QApplication a(argc, argv);
+    a.setFont(QFont("Microsoft Yahei", 9));
+
+#if (QT_VERSION < QT_VERSION_CHECK(5,0,0))
+#if _MSC_VER
+    QTextCodec *codec = QTextCodec::codecForName("gbk");
+#else
+    QTextCodec *codec = QTextCodec::codecForName("utf-8");
+#endif
+    QTextCodec::setCodecForLocale(codec);
+    QTextCodec::setCodecForCStrings(codec);
+    QTextCodec::setCodecForTr(codec);
+#else
+    QTextCodec *codec = QTextCodec::codecForName("utf-8");
+    QTextCodec::setCodecForLocale(codec);
+#endif
+
+    frmScreenWidget w;
+    w.setWindowTitle("屏幕截图");
+    w.show();
+
+    return a.exec();
+}

widget/screenwidget/screenwidget.cpp

@@ -0,0 +1,332 @@
+#pragma execution_character_set("utf-8")
+
+#include "screenwidget.h"
+#include "qmutex.h"
+#include "qapplication.h"
+#include "qpainter.h"
+#include "qfiledialog.h"
+#include "qevent.h"
+#include "qdatetime.h"
+#include "qstringlist.h"
+
+#if (QT_VERSION >= QT_VERSION_CHECK(5,0,0))
+#include "qscreen.h"
+#define deskGeometry qApp->primaryScreen()->geometry()
+#define deskGeometry2 qApp->primaryScreen()->availableGeometry()
+#else
+#include "qdesktopwidget.h"
+#define deskGeometry qApp->desktop()->geometry()
+#define deskGeometry2 qApp->desktop()->availableGeometry()
+#endif
+
+#define STRDATETIME qPrintable (QDateTime::currentDateTime().toString("yyyy-MM-dd-HH-mm-ss"))
+
+Screen::Screen(QSize size)
+{
+    maxWidth = size.width();
+    maxHeight = size.height();
+
+    startPos = QPoint(-1, -1);
+    endPos = startPos;
+    leftUpPos = startPos;
+    rightDownPos = startPos;
+    status = SELECT;
+}
+
+int Screen::width()
+{
+    return maxWidth;
+}
+
+int Screen::height()
+{
+    return maxHeight;
+}
+
+Screen::STATUS Screen::getStatus()
+{
+    return status;
+}
+
+void Screen::setStatus(STATUS status)
+{
+    this->status = status;
+}
+
+void Screen::setEnd(QPoint pos)
+{
+    endPos = pos;
+    leftUpPos = startPos;
+    rightDownPos = endPos;
+    cmpPoint(leftUpPos, rightDownPos);
+}
+
+void Screen::setStart(QPoint pos)
+{
+    startPos = pos;
+}
+
+QPoint Screen::getEnd()
+{
+    return endPos;
+}
+
+QPoint Screen::getStart()
+{
+    return startPos;
+}
+
+QPoint Screen::getLeftUp()
+{
+    return leftUpPos;
+}
+
+QPoint Screen::getRightDown()
+{
+    return rightDownPos;
+}
+
+bool Screen::isInArea(QPoint pos)
+{
+    if (pos.x() > leftUpPos.x() && pos.x() < rightDownPos.x() && pos.y() > leftUpPos.y() && pos.y() < rightDownPos.y()) {
+        return true;
+    }
+
+    return false;
+}
+
+void Screen::move(QPoint p)
+{
+    int lx = leftUpPos.x() + p.x();
+    int ly = leftUpPos.y() + p.y();
+    int rx = rightDownPos.x() + p.x();
+    int ry = rightDownPos.y() + p.y();
+
+    if (lx < 0) {
+        lx = 0;
+        rx -= p.x();
+    }
+
+    if (ly < 0) {
+        ly = 0;
+        ry -= p.y();
+    }
+
+    if (rx > maxWidth)  {
+        rx = maxWidth;
+        lx -= p.x();
+    }
+
+    if (ry > maxHeight) {
+        ry = maxHeight;
+        ly -= p.y();
+    }
+
+    leftUpPos = QPoint(lx, ly);
+    rightDownPos = QPoint(rx, ry);
+    startPos = leftUpPos;
+    endPos = rightDownPos;
+}
+
+void Screen::cmpPoint(QPoint &leftTop, QPoint &rightDown)
+{
+    QPoint l = leftTop;
+    QPoint r = rightDown;
+
+    if (l.x() <= r.x()) {
+        if (l.y() <= r.y()) {
+            ;
+        } else {
+            leftTop.setY(r.y());
+            rightDown.setY(l.y());
+        }
+    } else {
+        if (l.y() < r.y()) {
+            leftTop.setX(r.x());
+            rightDown.setX(l.x());
+        } else {
+            QPoint tmp;
+            tmp = leftTop;
+            leftTop = rightDown;
+            rightDown = tmp;
+        }
+    }
+}
+
+QScopedPointer<ScreenWidget> ScreenWidget::self;
+ScreenWidget *ScreenWidget::Instance()
+{
+    if (self.isNull()) {
+        static QMutex mutex;
+        QMutexLocker locker(&mutex);
+        if (self.isNull()) {
+            self.reset(new ScreenWidget);
+        }
+    }
+
+    return self.data();
+}
+
+ScreenWidget::ScreenWidget(QWidget *parent) : QWidget(parent)
+{
+    //this->setWindowFlags(Qt::Tool | Qt::WindowStaysOnTopHint | Qt::FramelessWindowHint | Qt::X11BypassWindowManagerHint);
+
+    menu = new QMenu(this);
+    menu->addAction("保存当前截图", this, SLOT(saveScreen()));
+    menu->addAction("保存全屏截图", this, SLOT(saveFullScreen()));
+    menu->addAction("截图另存为", this, SLOT(saveScreenOther()));
+    menu->addAction("全屏另存为", this, SLOT(saveFullOther()));
+    menu->addAction("退出截图", this, SLOT(hide()));
+
+    //取得屏幕大小
+    screen = new Screen(deskGeometry.size());
+    //保存全屏图像
+    fullScreen = new QPixmap();
+}
+
+void ScreenWidget::paintEvent(QPaintEvent *)
+{
+    int x = screen->getLeftUp().x();
+    int y = screen->getLeftUp().y();
+    int w = screen->getRightDown().x() - x;
+    int h = screen->getRightDown().y() - y;
+
+    QPainter painter(this);
+
+    QPen pen;
+    pen.setColor(Qt::green);
+    pen.setWidth(2);
+    pen.setStyle(Qt::DotLine);
+    painter.setPen(pen);
+    painter.drawPixmap(0, 0, *bgScreen);
+
+    if (w != 0 && h != 0) {
+        painter.drawPixmap(x, y, fullScreen->copy(x, y, w, h));
+    }
+
+    painter.drawRect(x, y, w, h);
+
+    pen.setColor(Qt::yellow);
+    painter.setPen(pen);
+    painter.drawText(x + 2, y - 8, tr("截图范围：( %1 x %2 ) - ( %3 x %4 )  图片大小：( %5 x %6 )")
+                     .arg(x).arg(y).arg(x + w).arg(y + h).arg(w).arg(h));
+}
+
+void ScreenWidget::showEvent(QShowEvent *)
+{
+    QPoint point(-1, -1);
+    screen->setStart(point);
+    screen->setEnd(point);
+
+#if (QT_VERSION >= QT_VERSION_CHECK(5,0,0))
+    QScreen *pscreen = QApplication::primaryScreen();
+    *fullScreen = pscreen->grabWindow(0, 0, 0, screen->width(), screen->height());
+#else
+    *fullScreen = fullScreen->grabWindow(0, 0, 0, screen->width(), screen->height());
+#endif
+
+    //设置透明度实现模糊背景
+    QPixmap pix(screen->width(), screen->height());
+    pix.fill((QColor(160, 160, 160, 200)));
+    bgScreen = new QPixmap(*fullScreen);
+    QPainter p(bgScreen);
+    p.drawPixmap(0, 0, pix);
+}
+
+void ScreenWidget::saveScreen()
+{
+    int x = screen->getLeftUp().x();
+    int y = screen->getLeftUp().y();
+    int w = screen->getRightDown().x() - x;
+    int h = screen->getRightDown().y() - y;
+
+    QString fileName = QString("%1/screen_%2.png").arg(qApp->applicationDirPath()).arg(STRDATETIME);
+    fullScreen->copy(x, y, w, h).save(fileName, "png");
+    close();
+}
+
+void ScreenWidget::saveFullScreen()
+{
+    QString fileName = QString("%1/full_%2.png").arg(qApp->applicationDirPath()).arg(STRDATETIME);
+    fullScreen->save(fileName, "png");
+    close();
+}
+
+void ScreenWidget::saveScreenOther()
+{
+    QString name = QString("%1.png").arg(STRDATETIME);
+    QString fileName = QFileDialog::getSaveFileName(this, "保存图片", name, "png Files (*.png)");
+    if (!fileName.endsWith(".png")) {
+        fileName += ".png";
+    }
+
+    if (fileName.length() > 0) {
+        int x = screen->getLeftUp().x();
+        int y = screen->getLeftUp().y();
+        int w = screen->getRightDown().x() - x;
+        int h = screen->getRightDown().y() - y;
+        fullScreen->copy(x, y, w, h).save(fileName, "png");
+        close();
+    }
+}
+
+void ScreenWidget::saveFullOther()
+{
+    QString name = QString("%1.png").arg(STRDATETIME);
+    QString fileName = QFileDialog::getSaveFileName(this, "保存图片", name, "png Files (*.png)");
+    if (!fileName.endsWith(".png")) {
+        fileName += ".png";
+    }
+
+    if (fileName.length() > 0) {
+        fullScreen->save(fileName, "png");
+        close();
+    }
+}
+
+void ScreenWidget::mouseMoveEvent(QMouseEvent *e)
+{
+    if (screen->getStatus() == Screen::SELECT) {
+        screen->setEnd(e->pos());
+    } else if (screen->getStatus() == Screen::MOV) {
+        QPoint p(e->x() - movPos.x(), e->y() - movPos.y());
+        screen->move(p);
+        movPos = e->pos();
+    }
+
+    this->update();
+}
+
+void ScreenWidget::mousePressEvent(QMouseEvent *e)
+{
+    int status = screen->getStatus();
+
+    if (status == Screen::SELECT) {
+        screen->setStart(e->pos());
+    } else if (status == Screen::MOV) {
+        if (screen->isInArea(e->pos()) == false) {
+            screen->setStart(e->pos());
+            screen->setStatus(Screen::SELECT);
+        } else {
+            movPos = e->pos();
+            this->setCursor(Qt::SizeAllCursor);
+        }
+    }
+
+    this->update();
+}
+
+void ScreenWidget::mouseReleaseEvent(QMouseEvent *)
+{
+    if (screen->getStatus() == Screen::SELECT) {
+        screen->setStatus(Screen::MOV);
+    } else if (screen->getStatus() == Screen::MOV) {
+        this->setCursor(Qt::ArrowCursor);
+    }
+}
+
+void ScreenWidget::contextMenuEvent(QContextMenuEvent *)
+{
+    this->setCursor(Qt::ArrowCursor);
+    menu->exec(cursor().pos());
+}

widget/screenwidget/screenwidget.h

@@ -0,0 +1,94 @@
+#ifndef SCREENWIDGET_H
+#define SCREENWIDGET_H
+
+/**
+ * 全局截屏控件 作者:feiyangqingyun(QQ:517216493) 2016-11-11
+ * 1. 鼠标右键弹出菜单。
+ * 2. 支持全局截屏。
+ * 3. 支持局部截屏。
+ * 4. 支持截图区域拖动。
+ * 5. 支持图片另存为。
+ */
+
+#include <QWidget>
+#include <QMenu>
+#include <QPoint>
+#include <QSize>
+
+class Screen
+{
+public:
+    enum STATUS {SELECT, MOV, SET_W_H};
+    Screen() {}
+    Screen(QSize size);
+
+    void setStart(QPoint pos);
+    void setEnd(QPoint pos);
+    QPoint getStart();
+    QPoint getEnd();
+
+    QPoint getLeftUp();
+    QPoint getRightDown();
+
+    STATUS getStatus();
+    void setStatus(STATUS status);
+
+    int width();
+    int height();
+
+    //检测坐标点是否在截图区域内
+    bool isInArea(QPoint pos);
+    //按坐标移动截图区域
+    void move(QPoint p);
+
+private:
+    //记录 截图区域 左上角、右下角
+    QPoint leftUpPos, rightDownPos;
+    //记录 鼠标开始位置、结束位置
+    QPoint startPos, endPos;
+    //记录屏幕大小
+    int maxWidth, maxHeight;
+    //三个状态: 选择区域、移动区域、设置width height
+    STATUS status;
+
+    //比较两位置，判断左上角、右下角
+    void cmpPoint(QPoint &s, QPoint &e);
+};
+
+#ifdef quc
+class Q_DECL_EXPORT ScreenWidget : public QWidget
+#else
+class ScreenWidget : public QWidget
+#endif
+
+{
+    Q_OBJECT
+public:
+    static ScreenWidget *Instance();
+    explicit ScreenWidget(QWidget *parent = 0);
+
+private:
+    static QScopedPointer<ScreenWidget> self;
+    QMenu *menu;            //右键菜单对象
+    Screen *screen;         //截屏对象
+    QPixmap *fullScreen;    //保存全屏图像
+    QPixmap *bgScreen;      //模糊背景图
+    QPoint movPos;          //坐标
+
+protected:
+    void contextMenuEvent(QContextMenuEvent *);
+    void mousePressEvent(QMouseEvent *);
+    void mouseMoveEvent(QMouseEvent *);
+    void mouseReleaseEvent(QMouseEvent *);
+    void paintEvent(QPaintEvent *);
+    void showEvent(QShowEvent *);
+
+private slots:
+    void saveScreen();
+    void saveFullScreen();
+    void saveScreenOther();
+    void saveFullOther();
+};
+
+#endif // SCREENWIDGET_H
+

widget/screenwidget/screenwidget.pro

@@ -0,0 +1,17 @@
+QT += core gui
+greaterThan(QT_MAJOR_VERSION, 4): QT += widgets
+greaterThan(QT_MAJOR_VERSION, 5): QT += core5compat
+
+TARGET      = screenwidget
+TEMPLATE    = app
+DESTDIR     = $$PWD/../bin
+CONFIG      += warn_off
+
+SOURCES     += main.cpp
+SOURCES     += frmscreenwidget.cpp
+SOURCES     += screenwidget.cpp
+
+HEADERS     += screenwidget.h
+HEADERS     += frmscreenwidget.h
+
+FORMS       += frmscreenwidget.ui