--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/tools/shared/fontpanel/fontpanel.cpp Mon Jan 11 14:00:40 2010 +0000
@@ -0,0 +1,304 @@
+/****************************************************************************
+**
+** 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 tools applications 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 "fontpanel.h"
+
+#include <QtGui/QLabel>
+#include <QtGui/QComboBox>
+#include <QtGui/QFormLayout>
+#include <QtGui/QSpacerItem>
+#include <QtGui/QFontComboBox>
+#include <QtCore/QTimer>
+#include <QtGui/QLineEdit>
+
+QT_BEGIN_NAMESPACE
+
+FontPanel::FontPanel(QWidget *parentWidget) :
+ QGroupBox(parentWidget),
+ m_previewLineEdit(new QLineEdit),
+ m_writingSystemComboBox(new QComboBox),
+ m_familyComboBox(new QFontComboBox),
+ m_styleComboBox(new QComboBox),
+ m_pointSizeComboBox(new QComboBox),
+ m_previewFontUpdateTimer(0)
+{
+ setTitle(tr("Font"));
+
+ QFormLayout *formLayout = new QFormLayout(this);
+ // writing systems
+ m_writingSystemComboBox->setEditable(false);
+
+ QList<QFontDatabase::WritingSystem> writingSystems = m_fontDatabase.writingSystems();
+ writingSystems.push_front(QFontDatabase::Any);
+ foreach (QFontDatabase::WritingSystem ws, writingSystems)
+ m_writingSystemComboBox->addItem(QFontDatabase::writingSystemName(ws), QVariant(ws));
+ connect(m_writingSystemComboBox, SIGNAL(currentIndexChanged(int)), this, SLOT(slotWritingSystemChanged(int)));
+ formLayout->addRow(tr("&Writing system"), m_writingSystemComboBox);
+
+ connect(m_familyComboBox, SIGNAL( currentFontChanged(QFont)), this, SLOT(slotFamilyChanged(QFont)));
+ formLayout->addRow(tr("&Family"), m_familyComboBox);
+
+ m_styleComboBox->setEditable(false);
+ connect(m_styleComboBox, SIGNAL(currentIndexChanged(int)), this, SLOT(slotStyleChanged(int)));
+ formLayout->addRow(tr("&Style"), m_styleComboBox);
+
+ m_pointSizeComboBox->setEditable(false);
+ connect(m_pointSizeComboBox, SIGNAL(currentIndexChanged(int)), this, SLOT(slotPointSizeChanged(int)));
+ formLayout->addRow(tr("&Point size"), m_pointSizeComboBox);
+
+ m_previewLineEdit->setReadOnly(true);
+ formLayout->addRow(m_previewLineEdit);
+
+ setWritingSystem(QFontDatabase::Any);
+}
+
+QFont FontPanel::selectedFont() const
+{
+ QFont rc = m_familyComboBox->currentFont();
+ const QString family = rc.family();
+ rc.setPointSize(pointSize());
+ const QString styleDescription = styleString();
+ rc.setItalic(m_fontDatabase.italic(family, styleDescription));
+
+ rc.setBold(m_fontDatabase.bold(family, styleDescription));
+
+ // Weight < 0 asserts...
+ const int weight = m_fontDatabase.weight(family, styleDescription);
+ if (weight >= 0)
+ rc.setWeight(weight);
+ return rc;
+}
+
+void FontPanel::setSelectedFont(const QFont &f)
+{
+ m_familyComboBox->setCurrentFont(f);
+ if (m_familyComboBox->currentIndex() < 0) {
+ // family not in writing system - find the corresponding one?
+ QList<QFontDatabase::WritingSystem> familyWritingSystems = m_fontDatabase.writingSystems(f.family());
+ if (familyWritingSystems.empty())
+ return;
+
+ setWritingSystem(familyWritingSystems.front());
+ m_familyComboBox->setCurrentFont(f);
+ }
+
+ updateFamily(family());
+
+ const int pointSizeIndex = closestPointSizeIndex(f.pointSize());
+ m_pointSizeComboBox->setCurrentIndex( pointSizeIndex);
+
+ const QString styleString = m_fontDatabase.styleString(f);
+ const int styleIndex = m_styleComboBox->findText(styleString);
+ m_styleComboBox->setCurrentIndex(styleIndex);
+ slotUpdatePreviewFont();
+}
+
+
+QFontDatabase::WritingSystem FontPanel::writingSystem() const
+{
+ const int currentIndex = m_writingSystemComboBox->currentIndex();
+ if ( currentIndex == -1)
+ return QFontDatabase::Latin;
+ return static_cast<QFontDatabase::WritingSystem>(m_writingSystemComboBox->itemData(currentIndex).toInt());
+}
+
+QString FontPanel::family() const
+{
+ const int currentIndex = m_familyComboBox->currentIndex();
+ return currentIndex != -1 ? m_familyComboBox->currentFont().family() : QString();
+}
+
+int FontPanel::pointSize() const
+{
+ const int currentIndex = m_pointSizeComboBox->currentIndex();
+ return currentIndex != -1 ? m_pointSizeComboBox->itemData(currentIndex).toInt() : 9;
+}
+
+QString FontPanel::styleString() const
+{
+ const int currentIndex = m_styleComboBox->currentIndex();
+ return currentIndex != -1 ? m_styleComboBox->itemText(currentIndex) : QString();
+}
+
+void FontPanel::setWritingSystem(QFontDatabase::WritingSystem ws)
+{
+ m_writingSystemComboBox->setCurrentIndex(m_writingSystemComboBox->findData(QVariant(ws)));
+ updateWritingSystem(ws);
+}
+
+
+void FontPanel::slotWritingSystemChanged(int)
+{
+ updateWritingSystem(writingSystem());
+ delayedPreviewFontUpdate();
+}
+
+void FontPanel::slotFamilyChanged(const QFont &)
+{
+ updateFamily(family());
+ delayedPreviewFontUpdate();
+}
+
+void FontPanel::slotStyleChanged(int)
+{
+ updatePointSizes(family(), styleString());
+ delayedPreviewFontUpdate();
+}
+
+void FontPanel::slotPointSizeChanged(int)
+{
+ delayedPreviewFontUpdate();
+}
+
+void FontPanel::updateWritingSystem(QFontDatabase::WritingSystem ws)
+{
+
+ m_previewLineEdit->setText(QFontDatabase::writingSystemSample(ws));
+ m_familyComboBox->setWritingSystem (ws);
+ // Current font not in WS ... set index 0.
+ if (m_familyComboBox->currentIndex() < 0) {
+ m_familyComboBox->setCurrentIndex(0);
+ updateFamily(family());
+ }
+}
+
+void FontPanel::updateFamily(const QString &family)
+{
+ // Update styles and trigger update of point sizes.
+ // Try to maintain selection or select normal
+ const QString oldStyleString = styleString();
+
+ const QStringList styles = m_fontDatabase.styles(family);
+ const bool hasStyles = !styles.empty();
+
+ m_styleComboBox->setCurrentIndex(-1);
+ m_styleComboBox->clear();
+ m_styleComboBox->setEnabled(hasStyles);
+
+ int normalIndex = -1;
+ const QString normalStyle = QLatin1String("Normal");
+
+ if (hasStyles) {
+ foreach (QString style, styles) {
+ // try to maintain selection or select 'normal' preferably
+ const int newIndex = m_styleComboBox->count();
+ m_styleComboBox->addItem(style);
+ if (oldStyleString == style) {
+ m_styleComboBox->setCurrentIndex(newIndex);
+ } else {
+ if (oldStyleString == normalStyle)
+ normalIndex = newIndex;
+ }
+ }
+ if (m_styleComboBox->currentIndex() == -1 && normalIndex != -1)
+ m_styleComboBox->setCurrentIndex(normalIndex);
+ }
+ updatePointSizes(family, styleString());
+}
+
+int FontPanel::closestPointSizeIndex(int desiredPointSize) const
+{
+ // try to maintain selection or select closest.
+ int closestIndex = -1;
+ int closestAbsError = 0xFFFF;
+
+ const int pointSizeCount = m_pointSizeComboBox->count();
+ for (int i = 0; i < pointSizeCount; i++) {
+ const int itemPointSize = m_pointSizeComboBox->itemData(i).toInt();
+ const int absError = qAbs(desiredPointSize - itemPointSize);
+ if (absError < closestAbsError) {
+ closestIndex = i;
+ closestAbsError = absError;
+ if (closestAbsError == 0)
+ break;
+ } else { // past optimum
+ if (absError > closestAbsError) {
+ break;
+ }
+ }
+ }
+ return closestIndex;
+}
+
+
+void FontPanel::updatePointSizes(const QString &family, const QString &styleString)
+{
+ const int oldPointSize = pointSize();
+
+ QList<int> pointSizes = m_fontDatabase.pointSizes(family, styleString);
+ if (pointSizes.empty())
+ pointSizes = QFontDatabase::standardSizes();
+
+ const bool hasSizes = !pointSizes.empty();
+ m_pointSizeComboBox->clear();
+ m_pointSizeComboBox->setEnabled(hasSizes);
+ m_pointSizeComboBox->setCurrentIndex(-1);
+
+ // try to maintain selection or select closest.
+ if (hasSizes) {
+ QString n;
+ foreach (int pointSize, pointSizes)
+ m_pointSizeComboBox->addItem(n.setNum(pointSize), QVariant(pointSize));
+ const int closestIndex = closestPointSizeIndex(oldPointSize);
+ if (closestIndex != -1)
+ m_pointSizeComboBox->setCurrentIndex(closestIndex);
+ }
+}
+
+void FontPanel::slotUpdatePreviewFont()
+{
+ m_previewLineEdit->setFont(selectedFont());
+}
+
+void FontPanel::delayedPreviewFontUpdate()
+{
+ if (!m_previewFontUpdateTimer) {
+ m_previewFontUpdateTimer = new QTimer(this);
+ connect(m_previewFontUpdateTimer, SIGNAL(timeout()), this, SLOT(slotUpdatePreviewFont()));
+ m_previewFontUpdateTimer->setInterval(0);
+ m_previewFontUpdateTimer->setSingleShot(true);
+ }
+ if (m_previewFontUpdateTimer->isActive())
+ return;
+ m_previewFontUpdateTimer->start();
+}
+
+QT_END_NAMESPACE