printimage.h
- #ifndef PRINTIMAGE_H
- #define PRINTIMAGE_H
- #include <QtGui>
- #include <QImage>
- class PrintImage : public QMainWindow
- {
- Q_OBJECT
- public:
- PrintImage(QWidget *parent = 0, Qt::WFlags flags = 0);
- ~PrintImage();
- void createActions();
- void createMenus();
- void createToolBars();
- public slots:
- void sl_print();
- private:
- QLabel *labImage;
- QImage image;
- QAction *printAction;
- QMenu *fileMenu;
- QToolBar *fileToolBar;
- };
- #endif // PRINTIMAGE_H
printimage.cpp
- #include "printimage.h"
- PrintImage::PrintImage(QWidget *parent, Qt::WFlags flags)
- : QMainWindow(parent, flags)
- {
- setWindowTitle(tr("PrintImage"));
- labImage = new QLabel(this);
- labImage->setSizePolicy(QSizePolicy::Ignored,QSizePolicy::Ignored);
- labImage->setScaledContents(true);
- setCentralWidget(labImage);
- createActions();
- createMenus();
- createToolBars();
- if(image.load("tux.png"))
- {
- labImage->setPixmap(QPixmap::fromImage(image));
- resize(image.width(),image.height());
- }
- }
- PrintImage::~PrintImage()
- {
- }
- void PrintImage::createActions()
- {
- printAction = new QAction(QIcon("images/print.png"),tr("Print"),this);
- printAction->setShortcut(tr("Ctrl+P"));
- printAction->setStatusTip(tr("Print Image"));
- connect(printAction,SIGNAL(triggered()),this,SLOT(sl_print()));
- }
- void PrintImage::createMenus()
- {
- fileMenu = menuBar()->addMenu(tr("File"));
- fileMenu->addAction(printAction);
- }
- void PrintImage::createToolBars()
- {
- fileToolBar = addToolBar("File");
- fileToolBar->addAction(printAction);
- }
- void PrintImage::sl_print()
- {
- QPrinter printer;
- QPrintDialog printDlg(&printer,this);
- if(printDlg.exec())
- {
- QPainter painter(&printer);
- QRect rect = painter.viewport();
- QSize size = image.size();
- size.scale(rect.size(),Qt::KeepAspectRatio);
- painter.setViewport(rect.x(),rect.y(),size.width(),size.height());
- painter.setWindow(image.rect());
- painter.drawImage(0,0,image);
- }
- }
作者：
韩兆新
本文版权归作者和博客园共有，欢迎转载，但未经作者同意必须保留此段声明，且在文章页面明显位置给出原文连接，否则保留追究法律责任的权利。
分类:
[02]Qt语言基础
标签:
Qt学习笔记
本文转自韩兆新博客博客园博客，原文链接：http://www.cnblogs.com/hanzhaoxin/archive/2012/11/24/2786453.html，如需转载请自行联系原作者
