examples/widgets/charactermap/mainwindow.cpp
changeset 0 1918ee327afb
child 3 41300fa6a67c
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/examples/widgets/charactermap/mainwindow.cpp	Mon Jan 11 14:00:40 2010 +0000
@@ -0,0 +1,196 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the examples of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include <QtGui>
+
+#include "characterwidget.h"
+#include "mainwindow.h"
+
+//! [0]
+MainWindow::MainWindow()
+{
+    QWidget *centralWidget = new QWidget;
+
+    QLabel *fontLabel = new QLabel(tr("Font:"));
+    fontCombo = new QFontComboBox;
+    QLabel *sizeLabel = new QLabel(tr("Size:"));
+    sizeCombo = new QComboBox;
+    QLabel *styleLabel = new QLabel(tr("Style:"));
+    styleCombo = new QComboBox;
+    QLabel *fontMergingLabel = new QLabel(tr("Automatic Font Merging:"));
+    fontMerging = new QCheckBox;
+    fontMerging->setChecked(true);
+
+    scrollArea = new QScrollArea;
+    characterWidget = new CharacterWidget;
+    scrollArea->setWidget(characterWidget);
+//! [0]
+
+//! [1]
+    findStyles(fontCombo->currentFont());
+//! [1]
+    findSizes(fontCombo->currentFont());
+
+//! [2]
+    lineEdit = new QLineEdit;
+    QPushButton *clipboardButton = new QPushButton(tr("&To clipboard"));
+//! [2]
+
+//! [3]
+    clipboard = QApplication::clipboard();
+//! [3]
+
+//! [4]
+    connect(fontCombo, SIGNAL(currentFontChanged(const QFont &)),
+            this, SLOT(findStyles(const QFont &)));
+    connect(fontCombo, SIGNAL(currentFontChanged(const QFont &)),
+            this, SLOT(findSizes(const QFont &)));
+    connect(fontCombo, SIGNAL(currentFontChanged(const QFont &)),
+            characterWidget, SLOT(updateFont(const QFont &)));
+    connect(sizeCombo, SIGNAL(currentIndexChanged(const QString &)),
+            characterWidget, SLOT(updateSize(const QString &)));
+    connect(styleCombo, SIGNAL(currentIndexChanged(const QString &)),
+            characterWidget, SLOT(updateStyle(const QString &)));
+//! [4] //! [5]
+    connect(characterWidget, SIGNAL(characterSelected(const QString &)),
+            this, SLOT(insertCharacter(const QString &)));
+    connect(clipboardButton, SIGNAL(clicked()), this, SLOT(updateClipboard()));
+//! [5]
+    connect(fontMerging, SIGNAL(toggled(bool)), characterWidget, SLOT(updateFontMerging(bool)));
+
+//! [6]
+    QHBoxLayout *controlsLayout = new QHBoxLayout;
+    controlsLayout->addWidget(fontLabel);
+    controlsLayout->addWidget(fontCombo, 1);
+    controlsLayout->addWidget(sizeLabel);
+    controlsLayout->addWidget(sizeCombo, 1);
+    controlsLayout->addWidget(styleLabel);
+    controlsLayout->addWidget(styleCombo, 1);
+    controlsLayout->addWidget(fontMergingLabel);
+    controlsLayout->addWidget(fontMerging, 1);
+    controlsLayout->addStretch(1);
+
+    QHBoxLayout *lineLayout = new QHBoxLayout;
+    lineLayout->addWidget(lineEdit, 1);
+    lineLayout->addSpacing(12);
+    lineLayout->addWidget(clipboardButton);
+
+    QVBoxLayout *centralLayout = new QVBoxLayout;
+    centralLayout->addLayout(controlsLayout);
+    centralLayout->addWidget(scrollArea, 1);
+    centralLayout->addSpacing(4);
+    centralLayout->addLayout(lineLayout);
+    centralWidget->setLayout(centralLayout);
+
+    setCentralWidget(centralWidget);
+    setWindowTitle(tr("Character Map"));
+}
+//! [6]
+
+//! [7]
+void MainWindow::findStyles(const QFont &font)
+{
+    QFontDatabase fontDatabase;
+    QString currentItem = styleCombo->currentText();
+    styleCombo->clear();
+//! [7]
+
+//! [8]
+    QString style;
+    foreach (style, fontDatabase.styles(font.family()))
+        styleCombo->addItem(style);
+
+    int styleIndex = styleCombo->findText(currentItem);
+
+    if (styleIndex == -1)
+        styleCombo->setCurrentIndex(0);
+    else
+        styleCombo->setCurrentIndex(styleIndex);
+}
+//! [8]
+
+void MainWindow::findSizes(const QFont &font)
+{
+    QFontDatabase fontDatabase;
+    QString currentSize = sizeCombo->currentText();
+    sizeCombo->blockSignals(true);
+    sizeCombo->clear();
+
+    int size;
+    if(fontDatabase.isSmoothlyScalable(font.family(), fontDatabase.styleString(font))) {
+        foreach(size, QFontDatabase::standardSizes()) {
+            sizeCombo->addItem(QVariant(size).toString());
+            sizeCombo->setEditable(true);
+        }
+
+    } else {
+        foreach(size, fontDatabase.smoothSizes(font.family(), fontDatabase.styleString(font))) {
+            sizeCombo->addItem(QVariant(size).toString());
+            sizeCombo->setEditable(false);
+        }
+    }
+
+    sizeCombo->blockSignals(false);
+
+    int sizeIndex = sizeCombo->findText(currentSize);
+
+    if(sizeIndex == -1)
+        sizeCombo->setCurrentIndex(qMax(0, sizeCombo->count() / 3));
+    else
+        sizeCombo->setCurrentIndex(sizeIndex);
+}
+
+//! [9]
+void MainWindow::insertCharacter(const QString &character)
+{
+    lineEdit->insert(character);
+}
+//! [9]
+
+//! [10]
+void MainWindow::updateClipboard()
+{
+//! [11]
+    clipboard->setText(lineEdit->text(), QClipboard::Clipboard);
+//! [11]
+    clipboard->setText(lineEdit->text(), QClipboard::Selection);
+}
+//! [10]