qgslegenditem.cpp

一个非常好的GIS开源新版本

/***************************************************************************
 *   Copyright (C) 2005 by Tim Sutton   *
 *   aps02ts@macbuntu   *
 *                                                                         *
 *   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 of the License, 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.                          *
 *                                                                         *
 *   You should have received a copy of the GNU General Public License     *
 *   along with this program; if not, write to the                         *
 *   Free Software Foundation, Inc.,                                       *
 *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
 ***************************************************************************/
#include "qgslegenditem.h"
#include <iostream>
#include <QCoreApplication>
#include <QIcon>
#include "qgslegend.h"


QgsLegendItem::QgsLegendItem(QTreeWidgetItem * theItem ,QString theName)
 : QTreeWidgetItem(theItem)
{
  setText(0, theName);
}

QgsLegendItem::QgsLegendItem(QTreeWidget* theListView,QString theString)
 : QTreeWidgetItem(theListView)
{
  setText(0, theString);
}

QgsLegendItem::QgsLegendItem(): QTreeWidgetItem()
{
}

QgsLegendItem::~QgsLegendItem()
{
}


void QgsLegendItem::print(QgsLegendItem * theItem)
{
#if 0 //todo: adapt to qt4
    Q3ListViewItemIterator myIterator (theItem);
    while (myIterator.current())
    {
      LEGEND_ITEM_TYPE curtype = dynamic_cast<QgsLegendItem *>(myIterator.current())->type();
      std::cout << myIterator.current()->text(0).toLocal8Bit().data() << " - " << curtype << std::endl;
      if (myIterator.current()->childCount() > 0)
      {
        //print(dynamic_cast<QgsLegendItem *>(myIterator.current()));
      }
      ++myIterator;
    }
#endif
}

QgsLegendItem* QgsLegendItem::firstChild()
{
  return dynamic_cast<QgsLegendItem*>(child(0));
}

QgsLegendItem* QgsLegendItem::nextSibling()
{
  return dynamic_cast<QgsLegendItem*>(dynamic_cast<QgsLegend*>(treeWidget())->nextSibling(this));
}

QgsLegendItem* QgsLegendItem::findYoungerSibling()
{
  return dynamic_cast<QgsLegendItem*>(dynamic_cast<QgsLegend*>(treeWidget())->previousSibling(this));
}

void QgsLegendItem::moveItem(QgsLegendItem* after)
{
  dynamic_cast<QgsLegend*>(treeWidget())->moveItem(this, after);
}

void QgsLegendItem::removeAllChildren()
{
  while(child(0))
    {
      takeChild(0);
    }
}

void QgsLegendItem::storeAppearanceSettings()
{
  mExpanded = treeWidget()->isItemExpanded(this);
  mHidden = treeWidget()->isItemHidden(this);
  //call recursively for all subitems
  for(int i = 0; i < childCount(); ++i)
    {
      static_cast<QgsLegendItem*>(child(i))->storeAppearanceSettings();
    }
}

void QgsLegendItem::restoreAppearanceSettings()
{
  treeWidget()->setItemExpanded(this, mExpanded);
  treeWidget()->setItemHidden(this, mHidden);
  //call recursively for all subitems
  for(int i = 0; i < childCount(); ++i)
    {
      static_cast<QgsLegendItem*>(child(i))->restoreAppearanceSettings();
    }
}

QgsLegend* QgsLegendItem::legend() const
{
  QTreeWidget* treeWidgetPtr = treeWidget();
  QgsLegend* legendPtr = dynamic_cast<QgsLegend*>(treeWidgetPtr);
  return legendPtr;
}

QTreeWidgetItem* QgsLegendItem::child(int i) const
{
  return QTreeWidgetItem::child(i);
}

QTreeWidgetItem* QgsLegendItem::parent() const
{
  return QTreeWidgetItem::parent();
}

void QgsLegendItem::insertChild(int index, QTreeWidgetItem *child)
{
  QTreeWidgetItem::insertChild(index, child);
}