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00020 #include "treecombobox.h"
00021
00022 #include <qpainter.h>
00023
00024 TreeListBoxItem::TreeListBoxItem(QListBox *lb, const QPixmap& pix, const QString& txt, bool oneBlock)
00025 : QListBoxPixmap(pix, txt)
00026 {
00027 if (oneBlock)
00028 m_path = QStringList(txt);
00029 else
00030 m_path = QStringList::split('/', text(), false);
00031 m_depth = m_path.count()-1;
00032 m_child = m_next = m_parent = 0;
00033
00034
00035 if (m_depth == 0)
00036 {
00037 TreeListBoxItem *item = static_cast<TreeListBoxItem*>(lb->item(0));
00038 while (item && item->m_next)
00039 item = item->m_next;
00040 lb->insertItem(this);
00041 if (item)
00042 item->m_next = this;
00043 }
00044 else
00045 {
00046 QString parentStr = txt.left(txt.length()-m_path[m_depth].length()-1);
00047 TreeListBoxItem *parentItem = static_cast<TreeListBoxItem*>(lb->findItem(parentStr, Qt::ExactMatch));
00048 if (!parentItem)
00049 {
00050
00051 parentItem = new TreeListBoxItem(lb, QPixmap(), parentStr);
00052 }
00053
00054
00055 TreeListBoxItem *childItem = static_cast<TreeListBoxItem*>(parentItem), *prevItem = 0;
00056 while (childItem->next())
00057 {
00058 TreeListBoxItem *nextItem = static_cast<TreeListBoxItem*>(childItem->next());
00059 if (nextItem->m_depth >= m_depth)
00060 {
00061 childItem = nextItem;
00062 if (childItem->m_depth == m_depth)
00063 prevItem = childItem;
00064 }
00065 else
00066 break;
00067 }
00068
00069 lb->insertItem(this, childItem);
00070 m_parent = parentItem;
00071 if (prevItem)
00072 prevItem->m_next = this;
00073 else
00074 parentItem->m_child = this;
00075 }
00076 }
00077
00078 int TreeListBoxItem::width(const QListBox *lb) const
00079 {
00080 int w = m_depth * stepSize() + 2;
00081 if (pixmap())
00082 w += (pixmap()->width() + 2);
00083 if (!m_path[m_depth].isEmpty())
00084 w += (lb->fontMetrics().width(m_path[m_depth]) + 2);
00085 return QMAX(w, QListBoxPixmap::width(lb));
00086 }
00087
00088 void TreeListBoxItem::paint(QPainter *p)
00089 {
00090 if(!static_cast<TreeListBox*>(listBox())->m_painting)
00091 {
00092 QListBoxPixmap::paint(p);
00093 return;
00094 }
00095
00096 const QPixmap *pix = pixmap();
00097 QRect r = p->viewport();
00098 int h = height(listBox());
00099 int xo = (m_depth * stepSize() + 2);
00100 int yo = (pix ? (h-pix->height())/2 : 0);
00101
00102 if (m_depth > 0)
00103 {
00104 QPen oldPen = p->pen();
00105 p->setPen(listBox()->colorGroup().mid());
00106
00107 TreeListBoxItem *item = this;
00108 int s = xo-stepSize()/2;
00109 p->drawLine(s, r.top(), s, h/2);
00110 p->drawLine(s, h/2, s+stepSize()/2-2, h/2);
00111 while (item->m_parent)
00112 {
00113 if (item->m_next)
00114 p->drawLine(s, r.top(), s, h);
00115 item = item->m_parent;
00116 s -= stepSize();
00117 }
00118
00119 p->setPen(oldPen);
00120 }
00121 if (pix)
00122 {
00123 p->drawPixmap(xo, yo, *pix);
00124 xo += (pix->width() + 2);
00125 }
00126 p->drawText(xo, 0, r.width()-xo, height(listBox()), Qt::AlignLeft, m_path[m_depth]);
00127 }
00128
00129
00130
00131 TreeListBox::TreeListBox(QWidget *parent, const char *name)
00132 : QListBox(parent, name)
00133 {
00134 m_painting = false;
00135 }
00136
00137 void TreeListBox::paintCell(QPainter *p, int row, int col)
00138 {
00139 m_painting = true;
00140 QListBox::paintCell(p, row, col);
00141 m_painting = false;
00142 }
00143
00144
00145
00146 TreeComboBox::TreeComboBox(QWidget *parent, const char *name)
00147 : QComboBox(parent, name)
00148 {
00149 m_listbox = new TreeListBox(this);
00150 setListBox(m_listbox);
00151 }
00152
00153 void TreeComboBox::insertItem(const QPixmap& pix, const QString& txt, bool oneBlock)
00154 {
00155 new TreeListBoxItem(m_listbox, pix, txt, oneBlock);
00156 }