1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
|
// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
#include <QtWidgets>
#include <QtPrintSupport/qtprintsupportglobal.h>
#if QT_CONFIG(printdialog)
#include <QPrinter>
#include <QPrintDialog>
#endif
class Window : public QWidget
{
Q_OBJECT
public:
Window()
{
myWidget = new QPushButton("Print Me");
connect(myWidget, &QPushButton::clicked, this, &Window::print);
myWidget2 = new QPushButton("Print Document");
connect(myWidget2, &QPushButton::clicked, this, &Window::printFile);
editor = new QTextEdit(this);
QVBoxLayout *layout = new QVBoxLayout;
layout->addWidget(myWidget);
layout->addWidget(myWidget2);
layout->addWidget(editor);
setLayout(layout);
}
private slots:
void print()
{
#if defined(QT_PRINTSUPPORT_LIB) && QT_CONFIG(printer)
QPrinter printer(QPrinter::HighResolution);
printer.setOutputFileName("test.pdf");
//! [0]
QPainter painter;
painter.begin(&printer);
double xscale = printer.pageRect().width() / double(myWidget->width());
double yscale = printer.pageRect().height() / double(myWidget->height());
double scale = qMin(xscale, yscale);
painter.translate(printer.paperRect().x() + printer.pageRect().width()/2,
printer.paperRect().y() + printer.pageRect().height()/2);
painter.scale(scale, scale);
painter.translate(-width()/2, -height()/2);
myWidget->render(&painter);
//! [0]
#endif
}
void printFile()
{
#if defined(QT_PRINTSUPPORT_LIB) && QT_CONFIG(printdialog)
//! [1]
QPrinter printer;
QPrintDialog dialog(&printer, this);
dialog.setWindowTitle(tr("Print Document"));
if (editor->textCursor().hasSelection())
dialog.addEnabledOption(QAbstractPrintDialog::PrintSelection);
if (dialog.exec() != QDialog::Accepted) {
return;
}
//! [1]
editor->print(&printer);
#endif
}
private:
QPushButton *myWidget;
QPushButton *myWidget2;
QTextEdit *editor;
};
#include "main.moc"
int main(int argv, char **args)
{
QApplication app(argv, args);
Window window;
window.show();
return app.exec();
}
|
