src/frontends/qt4/PanelStack.cpp

   1 /**
   2  * \file PanelStack.cpp
   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 "support/debug.h"
  18
  19 #include <QFontMetrics>
  20 #include <QStackedWidget>
  21 #include <QTreeWidget>
  22 #include <QHBoxLayout>
  23 #include <QHeaderView>
  24
  25 #include <boost/assert.hpp>
  26
  27 #include <iostream>
  28
  29 using namespace std;
  30
  31 namespace lyx {
  32 namespace frontend {
  33
  34
  35 PanelStack::PanelStack(QWidget * parent)
  36         : QWidget(parent)
  37 {
  38         list_ = new QTreeWidget(this);
  39         stack_ = new QStackedWidget(this);
  40
  41         list_->setRootIsDecorated(false);
  42         list_->setColumnCount(1);
  43         // Hide the pointless list header
  44         list_->header()->hide();
  45 //      QStringList HeaderLabels;
  46 //      HeaderLabels << QString("Category");
  47 //      list_->setHeaderLabels(HeaderLabels);
  48
  49         connect(list_, SIGNAL(currentItemChanged (QTreeWidgetItem*, QTreeWidgetItem*)),
  50                 this, SLOT(switchPanel(QTreeWidgetItem *, QTreeWidgetItem*)));
  51
  52         QHBoxLayout * layout = new QHBoxLayout(this);
  53         layout->addWidget(list_, 0);
  54         layout->addWidget(stack_, 1);
  55 }
  56
  57
  58 void PanelStack::addCategory(QString const & name, QString const & parent)
  59 {
  60         QTreeWidgetItem * item = 0;
  61
  62         LYXERR(Debug::GUI, "addCategory n= " << fromqstr(name) << "   parent= ");
  63
  64         int depth = 1;
  65
  66         if (parent.isEmpty()) {
  67                 item = new QTreeWidgetItem(list_);
  68                 item->setText(0, name);
  69         }
  70         else {
  71                 if (!panel_map_.contains(parent))
  72                         addCategory(parent);
  73                 item = new QTreeWidgetItem(panel_map_.value(parent));
  74                 item->setText(0, name);
  75                 depth = 2;
  76                 list_->setRootIsDecorated(true);
  77         }
  78
  79         panel_map_[name] = item;
  80
  81         QFontMetrics fm(list_->font());
  82
  83         // calculate the real size the current item needs in the listview
  84         int itemsize = fm.width(name) + 10
  85                 + list_->indentation() * depth;
  86         // adjust the listview width to the max. itemsize
  87         if (itemsize > list_->minimumWidth())
  88                 list_->setMinimumWidth(itemsize);
  89 }
  90
  91
  92 void PanelStack::addPanel(QWidget * panel, QString const & name, QString const & parent)
  93 {
  94         addCategory(name, parent);
  95         QTreeWidgetItem * item = panel_map_.value(name);
  96         widget_map_[item] = panel;
  97         stack_->addWidget(panel);
  98         stack_->setMinimumSize(panel->minimumSize());
  99 }
 100
 101
 102 void PanelStack::setCurrentPanel(QString const & name)
 103 {
 104         QTreeWidgetItem * item = panel_map_.value(name, 0);
 105         BOOST_ASSERT(item);
 106
 107         // force on first set
 108         if (list_->currentItem() == item)
 109                 switchPanel(item);
 110
 111         list_->setCurrentItem(item);
 112 }
 113
 114
 115 void PanelStack::switchPanel(QTreeWidgetItem * item,
 116                              QTreeWidgetItem * /*previous*/)
 117 {
 118         // if we have a category, expand the tree and go to the
 119         // first item
 120         if (item->childCount() > 0) {
 121                 item->setExpanded(true);
 122                 list_->setCurrentItem(item->child(0));
 123         }
 124         if (QWidget * w = widget_map_.value(item, 0))
 125                 stack_->setCurrentWidget(w);
 126 }
 127
 128
 129 QSize PanelStack::sizeHint() const
 130 {
 131         return QSize(list_->width() + stack_->width(),
 132                 qMax(list_->height(), stack_->height()));
 133 }
 134
 135 } // namespace frontend
 136 } // namespace lyx
 137
 138 #include "PanelStack_moc.cpp"