src/tooltips/ktooltip.cpp

   1 /***************************************************************************
   2  *   Copyright (C) 2008 by Fredrik Höglund <fredrik@kde.org>               *
   3  *                                                                         *
   4  *   This program is free software; you can redistribute it and/or modify  *
   5  *   it under the terms of the GNU General Public License as published by  *
   6  *   the Free Software Foundation; either version 2 of the License, or     *
   7  *   (at your option) any later version.                                   *
   8  *                                                                         *
   9  *   This program is distributed in the hope that it will be useful,       *
  10  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
  11  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
  12  *   GNU General Public License for more details.                          *
  13  *                                                                         *
  14  *   You should have received a copy of the GNU General Public License     *
  15  *   along with this program; if not, write to the                         *
  16  *   Free Software Foundation, Inc.,                                       *
  17  *   51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA            *
  18  ***************************************************************************/
  19
  20 #include "ktooltip.h"
  21 #include "ktooltipwindow_p.h"
  22 #include <QLabel>
  23 #include <QPoint>
  24 #include <QWidget>
  25
  26 class KToolTipManager
  27 {
  28 public:
  29     ~KToolTipManager();
  30
  31     static KToolTipManager* instance();
  32
  33     void showTip(const QPoint& pos, QWidget* content);
  34     void hideTip();
  35
  36 private:
  37     KToolTipManager();
  38
  39     KToolTipWindow* m_window;
  40     static KToolTipManager *s_instance;
  41 };
  42
  43 KToolTipManager *KToolTipManager::s_instance = 0;
  44
  45 KToolTipManager::KToolTipManager() :
  46     m_window(0)
  47 {
  48 }
  49
  50 KToolTipManager::~KToolTipManager()
  51 {
  52     delete m_window;
  53     m_window = 0;
  54 }
  55
  56 KToolTipManager* KToolTipManager::instance()
  57 {
  58     if (s_instance == 0) {
  59         s_instance = new KToolTipManager();
  60     }
  61
  62     return s_instance;
  63 }
  64
  65 void KToolTipManager::showTip(const QPoint& pos, QWidget* content)
  66 {
  67     hideTip();
  68     Q_ASSERT(m_window == 0);
  69     m_window = new KToolTipWindow(content);
  70     m_window->move(pos);
  71     m_window->show();
  72 }
  73
  74 void KToolTipManager::hideTip()
  75 {
  76     if (m_window != 0) {
  77         m_window->hide();
  78         delete m_window;
  79         m_window = 0;
  80     }
  81 }
  82
  83 namespace KToolTip
  84 {
  85     void showText(const QPoint& pos, const QString& text)
  86     {
  87         QLabel* label = new QLabel(text);
  88         label->setForegroundRole(QPalette::ToolTipText);
  89         showTip(pos, label);
  90     }
  91
  92     void showTip(const QPoint& pos, QWidget* content)
  93     {
  94         KToolTipManager::instance()->showTip(pos, content);
  95     }
  96
  97     void hideTip()
  98     {
  99         KToolTipManager::instance()->hideTip();
 100     }
 101 }
 102