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/* This file is part of the KDE project
* Copyright (C) 2011-2012 Pierre Stirnweiss <pstirnweiss@googlemail.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public License
* along with this library; see the file COPYING.LIB. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#include "StylesCombo.h"
#include <KoStyleThumbnailer.h>
#include "StylesModel.h"
#include "StylesComboPreview.h"
#include "StylesDelegate.h"
#include <QListView>
#include <QMouseEvent>
#include <QStyleOptionViewItemV4>
#include <KDebug>
StylesCombo::StylesCombo(QWidget *parent)
: QComboBox(parent),
m_stylesModel(0),
m_view(new QListView()),
m_selectedItem(-1),
m_originalStyle(true)
{
setMinimumSize(50,32);
m_view->setMinimumWidth(250);
m_view->setMouseTracking(true);
setView(m_view);
view()->viewport()->installEventFilter(this);
StylesDelegate *delegate = new StylesDelegate();
connect(delegate, SIGNAL(needsUpdate(QModelIndex)), m_view, SLOT(update(QModelIndex)));
connect(delegate, SIGNAL(styleManagerButtonClicked(QModelIndex)), this, SLOT(slotShowDia(QModelIndex)));
connect(delegate, SIGNAL(deleteStyleButtonClicked(QModelIndex)), this, SLOT(slotDeleteStyle(QModelIndex)));
connect(delegate, SIGNAL(clickedInItem(QModelIndex)), this, SLOT(slotItemClicked(QModelIndex)));
setItemDelegate(delegate);
connect(this, SIGNAL(currentIndexChanged(int)), this, SLOT(slotSelectionChanged(int)));
QComboBox::setEditable(true);
setIconSize(QSize(0,0));
StylesComboPreview *preview = new StylesComboPreview(this);
QComboBox::setEditable(true);
setLineEdit(preview);
}
StylesCombo::~StylesCombo()
{
}
void StylesCombo::setStyleIsOriginal(bool original)
{
m_originalStyle = original;
if (!original) {
m_preview->setAddButtonShown(true);
}
else {
m_preview->setAddButtonShown(false);
}
}
void StylesCombo::setStylesModel(StylesModel *model)
{
m_stylesModel = model;
setModel(model);
}
void StylesCombo::setEditable(bool editable)
{
if (editable) {
// Create a StylesComboPreview instead of a QLineEdit
// Compared to QComboBox::setEditable, we might be missing the SH_ComboBox_Popup code though...
// If a style needs this, then we'll need to call QComboBox::setEditable and then setLineEdit again
StylesComboPreview *edit = new StylesComboPreview( this );
setLineEdit( edit );
} else {
QComboBox::setEditable(editable);
}
}
void StylesCombo::setLineEdit(QLineEdit *edit)
{
if (!isEditable() && edit && !qstrcmp(edit->metaObject()->className(), "QLineEdit")) {
// uic generates code that creates a read-only StylesCombo and then
// calls combo->setEditable( true ), which causes QComboBox to set up
// a dumb QLineEdit instead of our nice StylesComboPreview.
// As some StylesCombo features rely on the StylesComboPreview, we reject
// this order here.
delete edit;
StylesComboPreview* preview = new StylesComboPreview(this);
edit = preview;
}
QComboBox::setLineEdit(edit);
m_preview = qobject_cast<StylesComboPreview*>(edit);
if (m_preview) {
connect(m_preview, SIGNAL(resized()), this, SLOT(slotUpdatePreview()));
connect(m_preview, SIGNAL(newStyleRequested(QString)), this, SIGNAL(newStyleRequested(QString)));
connect(m_preview, SIGNAL(clicked()), this, SLOT(slotPreviewClicked()));
}
}
void StylesCombo::slotSelectionChanged(int index)
{
m_selectedItem = index;
m_preview->setPreview(m_stylesModel->stylePreview(index, m_preview->availableSize()));
update();
emit selectionChanged(index);
}
void StylesCombo::slotItemClicked(QModelIndex index)
{
//this slot allows us to emit a selected signal. There is a bit of redundancy if the item clicked was indeed a new selection, wher we also emit the selectionChanged signal from the slot above.
m_selectedItem = index.row();
m_preview->setPreview(m_stylesModel->stylePreview(m_selectedItem, m_preview->availableSize()));
update();
emit selected(m_selectedItem);
}
void StylesCombo::slotUpdatePreview()
{
m_preview->setPreview(m_stylesModel->stylePreview(currentIndex(), m_preview->availableSize()));
update();
}
void StylesCombo::slotPreviewClicked()
{
if (!view()->isVisible()) {
showPopup();
}
}
bool StylesCombo::eventFilter(QObject *object, QEvent *event)
{
if (event->type() == QEvent::MouseButtonRelease && object == view()->viewport()) {
QMouseEvent *mouseEvent = static_cast<QMouseEvent*>(event);
//If what follows isn't a HACK then I have no clue what is!!!!
//The item delegate editorEvent method is not sent MouseButtonRelease events.
//This is because the QComboBox installs an event filter on the view and calls
//popup->hide() on MouseButtonRelease to dismiss the view. Since we installed an event filter on the view
//ourselves, we can prevent hiding the popup. We have to call itemDelegate->editorEvent
//manually though.
QModelIndex index = view()->indexAt(mouseEvent->pos());
QModelIndex buddy = m_stylesModel->buddy(index);
QStyleOptionViewItemV4 options;
options.rect = view()->visualRect(buddy);
options.widget = m_view;
options.state |= (buddy == view()->currentIndex() ? QStyle::State_HasFocus : QStyle::State_None);
return view()->itemDelegate()->editorEvent(mouseEvent, m_stylesModel, options, index);
}
return false;
}
void StylesCombo::slotShowDia(QModelIndex index)
{
emit showStyleManager(index.row());
}
void StylesCombo::slotDeleteStyle(QModelIndex index)
{
emit deleteStyle(index.row());
}
#include <StylesCombo.moc>
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