Added developer-abandoned KDE3 version of Digikam

git-svn-id: svn://anonsvn.kde.org/home/kde/branches/trinity/applications/digikam@1075997 283d02a7-25f6-0310-bc7c-ecb5cbfe19da

1 files changed, 198 insertions, 0 deletions

diff --git a/digikam/libs/widgets/common/squeezedcombobox.cpp b/digikam/libs/widgets/common/squeezedcombobox.cpp
new file mode 100644
index 0000000..1554b95
--- /dev/null
+++ b/digikam/libs/widgets/common/squeezedcombobox.cpp
@@ -0,0 +1,198 @@
+/* ============================================================
+ *
+ * This file is a part of digiKam project
+ * http://www.digikam.org
+ *
+ * Date        : 2005-01-01
+ * Description : a combo box with a width not depending of text 
+ *               content size
+ * 
+ * Copyright (C) 2005 by Tom Albers <tomalbers@kde.nl>
+ * Copyright (C) 2006-2007 by Gilles Caulier <caulier dot gilles at gmail dot com> 
+ *
+ * This program is free software; you can redistribute it
+ * and/or modify it under the terms of the GNU General
+ * Public License as published by the Free Software Foundation;
+ * either version 2, or (at your option)
+ * any later version.
+ * 
+ * This program 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 General Public License for more details.
+ * 
+ * ============================================================ */
+
+/** @file squeezedcombobox.cpp */
+
+// Qt includes.
+
+#include <qlistbox.h>
+#include <qcombobox.h>
+#include <qpair.h>
+#include <qtimer.h>
+#include <qvaluelist.h>
+#include <qstyle.h>
+#include <qapplication.h>
+#include <qtooltip.h>
+#include <qmap.h>
+
+// Local includes.
+
+#include "squeezedcombobox.h"
+#include "squeezedcombobox.moc"
+
+namespace Digikam
+{
+
+class SqueezedComboBoxPriv
+{
+public:
+
+    SqueezedComboBoxPriv()
+    {
+        timer   = 0;
+        tooltip = 0;
+    }
+
+    QMap<int, QString>   originalItems;
+
+    QTimer              *timer;
+
+    SqueezedComboBoxTip *tooltip;
+};
+
+SqueezedComboBox::SqueezedComboBox(QWidget *parent, const char *name)
+                : QComboBox(parent, name)
+{
+    d = new SqueezedComboBoxPriv;
+    d->timer = new QTimer(this);
+
+    // See B.K.O #138747 : always for QComboBox instance to use a QListbox to 
+    // render content independently of Widget style used. 
+    setListBox(new QListBox(this));
+
+    d->tooltip = new SqueezedComboBoxTip(listBox()->viewport(), this);
+    setMinimumWidth(100);
+
+    connect(d->timer, SIGNAL(timeout()),
+            this, SLOT(slotTimeOut()));
+
+    connect(this, SIGNAL(activated( int )),
+            this, SLOT(slotUpdateToolTip( int )));
+}
+
+SqueezedComboBox::~SqueezedComboBox()
+{
+    delete d->tooltip;
+    delete d->timer;
+    delete d;
+}
+
+QSize SqueezedComboBox::sizeHint() const
+{
+    constPolish();
+    QFontMetrics fm = fontMetrics();
+
+    int maxW = count() ? 18 : 7 * fm.width(QChar('x')) + 18;
+    int maxH = QMAX( fm.lineSpacing(), 14 ) + 2;
+
+    return style().sizeFromContents(QStyle::CT_ComboBox, this,
+    QSize(maxW, maxH)).expandedTo(QApplication::globalStrut());
+}
+
+void SqueezedComboBox::insertSqueezedItem(const QString& newItem, int index)
+{
+    d->originalItems[index] = newItem;
+    insertItem( squeezeText(newItem), index );
+
+    // if this is the first item, set the tooltip.
+    if (index == 0)
+        slotUpdateToolTip(0);
+}
+
+void SqueezedComboBox::insertSqueezedList(const QStringList& newItems, int index)
+{
+    for(QStringList::const_iterator it = newItems.begin() ; it != newItems.end() ; ++it)
+    {
+        insertSqueezedItem(*it, index);
+        index++;
+    }
+}
+
+void SqueezedComboBox::resizeEvent(QResizeEvent *)
+{
+    d->timer->start(200, true);
+}
+
+void SqueezedComboBox::slotTimeOut()
+{
+    QMapIterator<int,QString> it;
+    for (it = d->originalItems.begin() ; it != d->originalItems.end();
+         ++it)
+    {
+        changeItem(squeezeText(it.data()), it.key());
+    }
+}
+
+QString SqueezedComboBox::squeezeText(const QString& original)
+{
+    // not the complete widgetSize is usable. Need to compensate for that.
+    int widgetSize = width()-30;
+    QFontMetrics fm(fontMetrics());
+
+    // If we can fit the full text, return that.
+    if (fm.width(original) < widgetSize)
+        return(original);
+
+    // We need to squeeze.
+    QString sqItem = original; // prevent empty return value;
+    widgetSize = widgetSize-fm.width("...");
+    for (uint i = 0 ; i != original.length(); ++i)
+    {
+        if ((int)fm.width(original.right(i)) > widgetSize)
+        {
+            sqItem = QString(original.left(i) + "...");
+            break;
+        }
+    }
+    return sqItem;
+}
+
+void SqueezedComboBox::slotUpdateToolTip(int index)
+{
+    QToolTip::remove(this);
+    QToolTip::add(this, d->originalItems[index]);
+}
+
+QString SqueezedComboBox::itemHighlighted()
+{
+    int curItem = listBox()->currentItem();
+    return d->originalItems[curItem];
+}
+
+// ------------------------------------------------------------------------
+
+SqueezedComboBoxTip::SqueezedComboBoxTip(QWidget *parent, SqueezedComboBox *name)
+                   : QToolTip( parent )
+{
+    m_originalWidget = name;
+}
+
+void SqueezedComboBoxTip::maybeTip(const QPoint &pos)
+{
+    QListBox* listBox = m_originalWidget->listBox();
+    if (!listBox)
+        return;
+
+    QListBoxItem* selectedItem = listBox->itemAt( pos );
+    if (selectedItem)
+    {
+        QRect positionToolTip = listBox->itemRect(selectedItem);
+        QString toolTipText = m_originalWidget->itemHighlighted();
+        if (!toolTipText.isNull())
+            tip(positionToolTip, toolTipText);
+    }
+}
+
+}  // namespace Digikam