| /**************************************************************************** |
| ** |
| ** Copyright (C) 2011 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. |
| ** |
| ** $QT_BEGIN_LICENSE:LGPL$ |
| ** GNU Lesser General Public License Usage |
| ** 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. |
| ** |
| ** GNU General Public License Usage |
| ** Alternatively, this file may be used under the terms of the GNU General |
| ** Public License version 3.0 as published by the Free Software Foundation |
| ** and appearing in the file LICENSE.GPL included in the packaging of this |
| ** file. Please review the following information to ensure the GNU General |
| ** Public License version 3.0 requirements will be met: |
| ** http://www.gnu.org/copyleft/gpl.html. |
| ** |
| ** Other Usage |
| ** Alternatively, this file may be used in accordance with the terms and |
| ** conditions contained in a signed written agreement between you and Nokia. |
| ** |
| ** |
| ** |
| ** |
| ** |
| ** $QT_END_LICENSE$ |
| ** |
| ****************************************************************************/ |
| |
| #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(); |
| if (styleDescription.contains(QLatin1String("Italic"))) |
| rc.setStyle(QFont::StyleItalic); |
| else if (styleDescription.contains(QLatin1String("Oblique"))) |
| rc.setStyle(QFont::StyleOblique); |
| else |
| rc.setStyle(QFont::StyleNormal); |
| 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 (const 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 |