kdbg/threadlist.cpp

   1 /*
   2  * Copyright Johannes Sixt
   3  * This file is licensed under the GNU General Public License Version 2.
   4  * See the file COPYING in the toplevel directory of the source directory.
   5  */
   6
   7 #include "threadlist.h"
   8 #include "dbgdriver.h"
   9 #include <klocalizedstring.h>
  10 #include <kiconloader.h>
  11 #include <QBitmap>
  12 #include <QHeaderView>
  13 #include <QPainter>
  14
  15
  16 class ThreadEntry : public QTreeWidgetItem, public ThreadInfo
  17 {
  18 public:
  19     ThreadEntry(QTreeWidget* parent, const ThreadInfo& thread);
  20     void setFunction(const QString& func);
  21
  22     bool m_delete;                      /* used for updating the list */
  23 };
  24
  25 ThreadEntry::ThreadEntry(QTreeWidget* parent, const ThreadInfo& thread) :
  26         QTreeWidgetItem(parent, QStringList() << thread.threadName << thread.function),
  27         ThreadInfo(thread),
  28         m_delete(false)
  29 {
  30 }
  31
  32 void ThreadEntry::setFunction(const QString& func)
  33 {
  34     function = func;
  35     setText(1, function);
  36 }
  37
  38
  39 ThreadList::ThreadList(QWidget* parent) :
  40         QTreeWidget(parent)
  41 {
  42     setHeaderLabels(QStringList() << i18n("Thread ID") << i18n("Location"));
  43     header()->setSectionResizeMode(1, QHeaderView::Interactive);
  44     setRootIsDecorated(false);
  45
  46     // load pixmaps
  47     m_focusIcon = UserIcon("pcinner");
  48     makeNoFocusIcon();
  49
  50     connect(this, SIGNAL(currentItemChanged(QTreeWidgetItem*, QTreeWidgetItem*)),
  51             this, SLOT(slotCurrentChanged(QTreeWidgetItem*)));
  52 }
  53
  54 ThreadList::~ThreadList()
  55 {
  56 }
  57
  58 void ThreadList::updateThreads(const std::list<ThreadInfo>& threads)
  59 {
  60     // reset flag in all items
  61     for (QTreeWidgetItemIterator i(this); *i; ++i)
  62         static_cast<ThreadEntry*>(*i)->m_delete = true;
  63
  64     for (std::list<ThreadInfo>::const_iterator i = threads.begin(); i != threads.end(); ++i)
  65     {
  66         // look up this thread by id
  67         ThreadEntry* te = threadById(i->id);
  68         if (te == 0) {
  69             te = new ThreadEntry(this, *i);
  70         } else {
  71             te->m_delete = false;
  72             te->setFunction(i->function);
  73         }
  74         // set focus icon
  75         te->hasFocus = i->hasFocus;
  76         te->setIcon(0, i->hasFocus  ?  QIcon(m_focusIcon)  :  QIcon(m_noFocusIcon));
  77     }
  78
  79     // delete all entries that have not been seen
  80     for (QTreeWidgetItemIterator i(this); *i;)
  81     {
  82         ThreadEntry* te = static_cast<ThreadEntry*>(*i);
  83         ++i;            // step ahead before deleting it ;-)
  84         if (te->m_delete) {
  85             delete te;
  86         }
  87     }
  88 }
  89
  90 ThreadEntry* ThreadList::threadById(int id)
  91 {
  92     for (QTreeWidgetItemIterator i(this); *i; ++i)
  93     {
  94         ThreadEntry* te = static_cast<ThreadEntry*>(*i);
  95         if (te->id == id) {
  96             return te;
  97         }
  98     }
  99     return 0;
 100 }
 101
 102 /*
 103  * Creates an icon of the same size as the m_focusIcon, but which is
 104  * totally transparent.
 105  */
 106 void ThreadList::makeNoFocusIcon()
 107 {
 108     m_noFocusIcon = m_focusIcon;
 109     {
 110         QPainter p(&m_noFocusIcon);
 111         p.fillRect(0,0, m_noFocusIcon.width(),m_noFocusIcon.height(), QColor(Qt::white));
 112     }
 113     m_noFocusIcon.setMask(m_noFocusIcon.createHeuristicMask());
 114 }
 115
 116 void ThreadList::slotCurrentChanged(QTreeWidgetItem* newItem)
 117 {
 118     if (newItem == 0)
 119         return;
 120
 121     ThreadEntry* te = static_cast<ThreadEntry*>(newItem);
 122
 123     // change the focused thread
 124     if (te->hasFocus)
 125         return;
 126
 127     emit setThread(te->id);
 128 }
 129
 130
 131 #include "threadlist.moc"