src/frontends/qt3/panelstack.C

   1 /**
   2  * \file panelstack.C
   3  * This file is part of LyX, the document processor.
   4  * Licence details can be found in the file COPYING.
   5  *
   6  * \author John Levon
   7  *
   8  * Full author contact details are available in file CREDITS.
   9  */
  10
  11 #include <config.h>
  12
  13 #include "panelstack.h"
  14
  15 #include "qt_helpers.h"
  16
  17 #include <qwidgetstack.h>
  18 #include <qfontmetrics.h>
  19 #include <qlayout.h>
  20 #include <qlistview.h>
  21
  22 #include <boost/assert.hpp>
  23
  24 using std::string;
  25
  26
  27 PanelStack::PanelStack(QWidget * parent, const char * name)
  28         : QWidget(parent, name)
  29 {
  30         list_ = new QListView(this);
  31         stack_ = new QWidgetStack(this);
  32         list_->setSizePolicy(QSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding));
  33         stack_->setSizePolicy(QSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding));
  34
  35         list_->setSorting(-1);
  36         list_->setHScrollBarMode(QScrollView::AlwaysOff);
  37         list_->setVScrollBarMode(QScrollView::AlwaysOff);
  38         list_->addColumn("");
  39         list_->setColumnWidthMode(0, QListView::Maximum);
  40         list_->setResizeMode(QListView::AllColumns);
  41         list_->setRootIsDecorated(true);
  42         QWidget * w = static_cast<QWidget*>(list_->child("list view header"));
  43         if (w)
  44                 w->hide();
  45
  46         connect(list_, SIGNAL(currentChanged(QListViewItem*)),
  47                 this, SLOT(switchPanel(QListViewItem *)));
  48
  49         QHBoxLayout * layout = new QHBoxLayout(this);
  50         layout->addWidget(list_, 0);
  51         layout->addWidget(stack_, 1);
  52 }
  53
  54
  55 void PanelStack::addCategory(string const & n, string const & parent)
  56 {
  57         QListViewItem * item;
  58
  59         QString name = toqstr(n);
  60
  61         if (!parent.empty()) {
  62                 PanelMap::iterator it = panel_map_.find(parent);
  63                 BOOST_ASSERT(it != panel_map_.end());
  64
  65                 QListViewItem * before = it->second->firstChild();
  66                 if (before) {
  67                         while (before->nextSibling())
  68                                 before = before->nextSibling();
  69
  70                         item = new QListViewItem(it->second, before, name);
  71                 } else {
  72                         item = new QListViewItem(it->second, name);
  73                 }
  74         } else {
  75                 QListViewItem * before = list_->firstChild();
  76                 if (before) {
  77                         while (before->nextSibling())
  78                                 before = before->nextSibling();
  79                         item = new QListViewItem(list_, before, name);
  80                 } else {
  81                         item = new QListViewItem(list_, name);
  82                 }
  83         }
  84
  85         item->setSelectable(false);
  86         item->setOpen(true);
  87         panel_map_[n] = item;
  88
  89         // calculate the real size the current item needs in the listview
  90         QFontMetrics fm(list_->font());
  91         int itemsize = item->width(fm, list_, 0) + 10
  92                    + list_->treeStepSize() * (item->depth() + 1) + list_->itemMargin();
  93         // adjust the listview width to the max. itemsize
  94         if (itemsize > list_->minimumWidth())
  95                 list_->setMinimumWidth(itemsize);
  96 }
  97
  98
  99 void PanelStack::addPanel(QWidget * panel, string const & name, string const & parent)
 100 {
 101         addCategory(name, parent);
 102         QListViewItem * item = panel_map_.find(name)->second;
 103
 104         // reset the selectability set by addCategory
 105         item->setSelectable(true);
 106
 107         widget_map_[item] = panel;
 108         stack_->addWidget(panel, -1);
 109         stack_->setMinimumSize(panel->minimumSize());
 110         resize(sizeHint());
 111 }
 112
 113
 114 void PanelStack::setCurrentPanel(string const & name)
 115 {
 116         PanelMap::const_iterator cit = panel_map_.find(name);
 117         BOOST_ASSERT(cit != panel_map_.end());
 118
 119         // force on first set
 120         if (list_->currentItem() ==  cit->second)
 121                 switchPanel(cit->second);
 122
 123         list_->setCurrentItem(cit->second);
 124 }
 125
 126
 127 void PanelStack::switchPanel(QListViewItem * item)
 128 {
 129         WidgetMap::const_iterator cit = widget_map_.find(item);
 130         if (cit == widget_map_.end())
 131                 return;
 132
 133         stack_->raiseWidget(cit->second);
 134 }