/****************************************************************************+
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**+
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** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).+
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** All rights reserved.+
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** Contact: Nokia Corporation (qt-info@nokia.com)+
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**+
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** This file is part of the tools applications of the Qt Toolkit.+
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**+
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** $QT_BEGIN_LICENSE:LGPL$+
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** No Commercial Usage+
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** This file contains pre-release code and may not be distributed.+
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** You may use this file in accordance with the terms and conditions+
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** contained in the Technology Preview License Agreement accompanying+
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** this package.+
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**+
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** GNU Lesser General Public License Usage+
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** Alternatively, this file may be used under the terms of the GNU Lesser+
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** General Public License version 2.1 as published by the Free Software+
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** Foundation and appearing in the file LICENSE.LGPL included in the+
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** packaging of this file.  Please review the following information to+
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** ensure the GNU Lesser General Public License version 2.1 requirements+
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** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.+
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**+
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** In addition, as a special exception, Nokia gives you certain additional+
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** rights.  These rights are described in the Nokia Qt LGPL Exception+
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.+
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**+
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** If you have questions regarding the use of this file, please contact+
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** Nokia at qt-info@nokia.com.+
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**+
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**+
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**+
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**+
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**+
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**+
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**+
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**+
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** $QT_END_LICENSE$+
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**+
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****************************************************************************/+
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+
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#include "qtgradientview.h"+
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#include "qtgradientmanager.h"+
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#include "qtgradientdialog.h"+
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#include "qtgradientutils.h"+
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#include <QtGui/QPainter>+
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#include <QtGui/QMessageBox>+
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#include <QtGui/QClipboard>+
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+
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QT_BEGIN_NAMESPACE+
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+
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void QtGradientView::slotGradientAdded(const QString &id, const QGradient &gradient)+
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{+
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    QListWidgetItem *item = new QListWidgetItem(QtGradientUtils::gradientPixmap(gradient), id, m_ui.listWidget);+
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    item->setToolTip(id);+
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    item->setSizeHint(QSize(72, 84));+
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    item->setFlags(item->flags() | Qt::ItemIsEditable);+
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+
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    m_idToItem[id] = item;+
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    m_itemToId[item] = id;+
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}+
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+
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void QtGradientView::slotGradientRenamed(const QString &id, const QString &newId)+
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{+
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    if (!m_idToItem.contains(id))+
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        return;+
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+
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    QListWidgetItem *item = m_idToItem.value(id);+
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    item->setText(newId);+
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    item->setToolTip(newId);+
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    m_itemToId[item] = newId;+
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    m_idToItem.remove(id);+
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    m_idToItem[newId] = item;+
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}+
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+
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void QtGradientView::slotGradientChanged(const QString &id, const QGradient &newGradient)+
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{+
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    if (!m_idToItem.contains(id))+
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        return;+
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+
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    QListWidgetItem *item = m_idToItem.value(id);+
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    item->setIcon(QtGradientUtils::gradientPixmap(newGradient));+
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}+
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+
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void QtGradientView::slotGradientRemoved(const QString &id)+
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{+
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    if (!m_idToItem.contains(id))+
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        return;+
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+
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    QListWidgetItem *item = m_idToItem.value(id);+
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    delete item;+
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    m_itemToId.remove(item);+
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    m_idToItem.remove(id);+
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}+
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+
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void QtGradientView::slotNewGradient()+
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{+
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    bool ok;+
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    QListWidgetItem *item = m_ui.listWidget->currentItem();+
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    QGradient grad = QLinearGradient();+
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    if (item)+
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        grad = m_manager->gradients().value(m_itemToId.value(item));+
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    QGradient gradient = QtGradientDialog::getGradient(&ok, grad, this);+
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    if (!ok)+
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        return;+
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+
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    QString id = m_manager->addGradient(tr("Grad"), gradient);+
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    m_ui.listWidget->setCurrentItem(m_idToItem.value(id));+
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}+
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+
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void QtGradientView::slotEditGradient()+
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{+
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    bool ok;+
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    QListWidgetItem *item = m_ui.listWidget->currentItem();+
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    if (!item)+
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        return;+
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+
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    const QString id = m_itemToId.value(item);+
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    QGradient grad = m_manager->gradients().value(id);+
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    QGradient gradient = QtGradientDialog::getGradient(&ok, grad, this);+
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    if (!ok)+
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        return;+
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+
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    m_manager->changeGradient(id, gradient);+
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}+
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+
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void QtGradientView::slotRemoveGradient()+
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{+
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    QListWidgetItem *item = m_ui.listWidget->currentItem();+
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    if (!item)+
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        return;+
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+
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    if (QMessageBox::question(this, tr("Remove Gradient"),+
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                tr("Are you sure you want to remove the selected gradient?"),+
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                QMessageBox::Yes | QMessageBox::Cancel, QMessageBox::Cancel) != QMessageBox::Yes)+
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        return;+
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+
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    const QString id = m_itemToId.value(item);+
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    m_manager->removeGradient(id);+
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}+
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+
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void QtGradientView::slotRenameGradient()+
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{+
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    QListWidgetItem *item = m_ui.listWidget->currentItem();+
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    if (!item)+
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        return;+
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+
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    m_ui.listWidget->editItem(item);+
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}+
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+
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void QtGradientView::slotRenameGradient(QListWidgetItem *item)+
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{+
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    if (!item)+
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        return;+
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+
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    const QString id = m_itemToId.value(item);+
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    m_manager->renameGradient(id, item->text());+
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}+
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+
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void QtGradientView::slotCurrentItemChanged(QListWidgetItem *item)+
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{+
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    m_editAction->setEnabled(item);+
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    m_renameAction->setEnabled(item);+
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    m_removeAction->setEnabled(item);+
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    emit currentGradientChanged(m_itemToId.value(item));+
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}+
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+
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void QtGradientView::slotGradientActivated(QListWidgetItem *item)+
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{+
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    const QString id = m_itemToId.value(item);+
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    if (!id.isEmpty())+
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        emit gradientActivated(id);+
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}+
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+
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QtGradientView::QtGradientView(QWidget *parent)+
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    : QWidget(parent)+
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{+
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    m_manager = 0;+
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+
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    m_ui.setupUi(this);+
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+
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    m_ui.listWidget->setViewMode(QListView::IconMode);+
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    m_ui.listWidget->setMovement(QListView::Static);+
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    m_ui.listWidget->setTextElideMode(Qt::ElideRight);+
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    m_ui.listWidget->setResizeMode(QListWidget::Adjust);+
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    m_ui.listWidget->setIconSize(QSize(64, 64));+
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    m_ui.listWidget->setEditTriggers(QAbstractItemView::NoEditTriggers);+
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+
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    QPalette pal = m_ui.listWidget->viewport()->palette();+
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    int pixSize = 18;+
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    QPixmap pm(2 * pixSize, 2 * pixSize);+
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+
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    QColor c1 = palette().color(QPalette::Midlight);+
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    QColor c2 = palette().color(QPalette::Dark);+
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    QPainter pmp(&pm);+
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    pmp.fillRect(0, 0, pixSize, pixSize, c1);+
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    pmp.fillRect(pixSize, pixSize, pixSize, pixSize, c1);+
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    pmp.fillRect(0, pixSize, pixSize, pixSize, c2);+
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    pmp.fillRect(pixSize, 0, pixSize, pixSize, c2);+
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+
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    pal.setBrush(QPalette::Base, QBrush(pm));+
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    m_ui.listWidget->viewport()->setPalette(pal);+
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+
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    connect(m_ui.listWidget, SIGNAL(itemDoubleClicked(QListWidgetItem*)), this, SLOT(slotGradientActivated(QListWidgetItem*)));+
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    connect(m_ui.listWidget, SIGNAL(itemChanged(QListWidgetItem*)), this, SLOT(slotRenameGradient(QListWidgetItem*)));+
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    connect(m_ui.listWidget, SIGNAL(currentItemChanged(QListWidgetItem*,QListWidgetItem*)), this, SLOT(slotCurrentItemChanged(QListWidgetItem*)));+
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+
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    m_newAction = new QAction(QIcon(QLatin1String(":/trolltech/qtgradienteditor/images/plus.png")), tr("New..."), this);+
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    m_editAction = new QAction(QIcon(QLatin1String(":/trolltech/qtgradienteditor/images/edit.png")), tr("Edit..."), this);+
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    m_renameAction = new QAction(tr("Rename"), this);+
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    m_removeAction = new QAction(QIcon(QLatin1String(":/trolltech/qtgradienteditor/images/minus.png")), tr("Remove"), this);+
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+
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    connect(m_newAction, SIGNAL(triggered()), this, SLOT(slotNewGradient()));+
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    connect(m_editAction, SIGNAL(triggered()), this, SLOT(slotEditGradient()));+
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    connect(m_removeAction, SIGNAL(triggered()), this, SLOT(slotRemoveGradient()));+
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    connect(m_renameAction, SIGNAL(triggered()), this, SLOT(slotRenameGradient()));+
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+
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    m_ui.listWidget->addAction(m_newAction);+
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    m_ui.listWidget->addAction(m_editAction);+
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    m_ui.listWidget->addAction(m_renameAction);+
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    m_ui.listWidget->addAction(m_removeAction);+
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+
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    m_ui.newButton->setDefaultAction(m_newAction);+
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    m_ui.editButton->setDefaultAction(m_editAction);+
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    m_ui.renameButton->setDefaultAction(m_renameAction);+
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    m_ui.removeButton->setDefaultAction(m_removeAction);+
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+
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    m_ui.listWidget->setContextMenuPolicy(Qt::ActionsContextMenu);+
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}+
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+
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void QtGradientView::setGradientManager(QtGradientManager *manager)+
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{+
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    if (m_manager == manager)+
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        return;+
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+
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    if (m_manager) {+
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        disconnect(m_manager, SIGNAL(gradientAdded(QString,QGradient)),+
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                    this, SLOT(slotGradientAdded(QString,QGradient)));+
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        disconnect(m_manager, SIGNAL(gradientRenamed(QString,QString)),+
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                    this, SLOT(slotGradientRenamed(QString,QString)));+
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        disconnect(m_manager, SIGNAL(gradientChanged(QString,QGradient)),+
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                    this, SLOT(slotGradientChanged(QString,QGradient)));+
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        disconnect(m_manager, SIGNAL(gradientRemoved(QString)),+
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                    this, SLOT(slotGradientRemoved(QString)));+
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+
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        m_ui.listWidget->clear();+
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        m_idToItem.clear();+
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        m_itemToId.clear();+
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    }+
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+
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    m_manager = manager;+
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+
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    if (!m_manager)+
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        return;+
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+
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    QMap<QString, QGradient> gradients = m_manager->gradients();+
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    QMapIterator<QString, QGradient> itGrad(gradients);+
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    while (itGrad.hasNext()) {+
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        itGrad.next();+
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        slotGradientAdded(itGrad.key(), itGrad.value());+
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    }+
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+
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    connect(m_manager, SIGNAL(gradientAdded(QString,QGradient)),+
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            this, SLOT(slotGradientAdded(QString,QGradient)));+
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    connect(m_manager, SIGNAL(gradientRenamed(QString,QString)),+
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            this, SLOT(slotGradientRenamed(QString,QString)));+
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    connect(m_manager, SIGNAL(gradientChanged(QString,QGradient)),+
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            this, SLOT(slotGradientChanged(QString,QGradient)));+
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    connect(m_manager, SIGNAL(gradientRemoved(QString)),+
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            this, SLOT(slotGradientRemoved(QString)));+
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}+
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+
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QtGradientManager *QtGradientView::gradientManager() const+
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{+
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    return m_manager;+
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}+
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+
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void QtGradientView::setCurrentGradient(const QString &id)+
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{+
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    QListWidgetItem *item = m_idToItem.value(id);+
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    if (!item)+
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        return;+
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+
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    m_ui.listWidget->setCurrentItem(item);+
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}+
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+
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QString QtGradientView::currentGradient() const+
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{+
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    return m_itemToId.value(m_ui.listWidget->currentItem());+
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}+
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+
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QT_END_NAMESPACE+
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