mirror of
https://github.com/crystalidea/qt6windows7.git
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92 lines
2.1 KiB
C++
92 lines
2.1 KiB
C++
// Copyright (C) 2016 The Qt Company Ltd.
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// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0
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#include <QApplication>
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#include <QTextEdit>
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#include <QLineEdit>
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#include <QVBoxLayout>
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#include <QFontDialog>
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#include <QPushButton>
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#define private public
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#include <qfont.h>
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#include <private/qtextengine_p.h>
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#include <private/qfontengine_p.h>
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#include <qtextlayout.h>
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#undef private
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class MyEdit : public QTextEdit {
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Q_OBJECT
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public:
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MyEdit(QWidget *p) : QTextEdit(p) { setReadOnly(true); }
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public slots:
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void setText(const QString &str);
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void changeFont();
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public:
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QLineEdit *lineEdit;
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};
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void MyEdit::setText(const QString &str)
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{
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if (str.isEmpty()) {
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clear();
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return;
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}
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QTextLayout layout(str, lineEdit->font());
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QTextEngine *e = layout.d;
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e->itemize();
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e->shape(0);
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QString result;
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result = "Using font '" + e->fontEngine(e->layoutData->items[0])->fontDef.family + "'\n\n";
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result += "{ { ";
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for (int i = 0; i < str.length(); ++i)
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result += "0x" + QString::number(str.at(i).unicode(), 16) + ", ";
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result += "0x0 },\n { ";
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for (int i = 0; i < e->layoutData->items[0].num_glyphs; ++i)
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result += "0x" + QString::number(e->layoutData->glyphLayout.glyphs[i], 16) + ", ";
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result += "0x0 } }";
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setPlainText(result);
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}
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void MyEdit::changeFont()
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{
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bool ok;
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QFont f = QFontDialog::getFont(&ok, lineEdit->font(), topLevelWidget());
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if (ok)
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lineEdit->setFont(f);
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}
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int main(int argc, char **argv)
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{
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QApplication a(argc, argv);
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QWidget *mw = new QWidget(0);
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QVBoxLayout *l = new QVBoxLayout(mw);
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QLineEdit *le = new QLineEdit(mw);
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l->addWidget(le);
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MyEdit *view = new MyEdit(mw);
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view->lineEdit = le;
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l->addWidget(view);
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QPushButton *button = new QPushButton("Change Font", mw);
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l->addWidget(button);
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QObject::connect(le, SIGNAL(textChanged(QString)), view, SLOT(setText(QString)));
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QObject::connect(button, SIGNAL(clicked()), view, SLOT(changeFont()));
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mw->resize(500, 300);
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mw->show();
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return a.exec();
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}
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#include <main.moc>
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