/**************************************************************************** | |
** | |
** 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 |