src/generic/tipwin.cpp

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/generic/tipwin.cpp
   3 // Purpose:     implementation of wxTipWindow
   4 // Author:      Vadim Zeitlin
   5 // Modified by:
   6 // Created:     10.09.00
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) 2000 Vadim Zeitlin <zeitlin@dptmaths.ens-cachan.fr>
   9 // Licence:     wxWindows license
  10 ///////////////////////////////////////////////////////////////////////////////
  11
  12 // ============================================================================
  13 // declarations
  14 // ============================================================================
  15
  16 // ----------------------------------------------------------------------------
  17 // headers
  18 // ----------------------------------------------------------------------------
  19
  20 #ifdef __GNUG__
  21     #pragma implementation "tipwin.h"
  22 #endif
  23
  24 // For compilers that support precompilatixon, includes "wx/wx.h".
  25 #include "wx/wxprec.h"
  26
  27 #ifdef __BORLANDC__
  28     #pragma hdrstop
  29 #endif
  30
  31 #ifndef WX_PRECOMP
  32     #include "wx/dcclient.h"
  33 #endif // WX_PRECOMP
  34
  35 #include "wx/tipwin.h"
  36
  37 #if wxUSE_TIPWINDOW
  38
  39 #include "wx/timer.h"
  40 #include "wx/settings.h"
  41
  42 // ----------------------------------------------------------------------------
  43 // constants
  44 // ----------------------------------------------------------------------------
  45
  46 static const wxCoord TEXT_MARGIN_X = 3;
  47 static const wxCoord TEXT_MARGIN_Y = 3;
  48
  49 // ============================================================================
  50 // implementation
  51 // ============================================================================
  52
  53 // ----------------------------------------------------------------------------
  54 // event tables
  55 // ----------------------------------------------------------------------------
  56
  57 BEGIN_EVENT_TABLE(wxTipWindow, wxPopupTransientWindow)
  58     EVT_LEFT_DOWN(wxTipWindow::OnMouseClick)
  59     EVT_RIGHT_DOWN(wxTipWindow::OnMouseClick)
  60     EVT_MIDDLE_DOWN(wxTipWindow::OnMouseClick)
  61     EVT_PAINT(wxTipWindow::OnPaint)
  62 END_EVENT_TABLE()
  63
  64
  65 // ----------------------------------------------------------------------------
  66 // wxTipWindow
  67 // ----------------------------------------------------------------------------
  68
  69 wxTipWindow::wxTipWindow(wxWindow *parent,
  70                          const wxString& text,
  71                          wxCoord maxLength, wxTipWindow** windowPtr)
  72            : wxPopupTransientWindow(parent)
  73 {
  74     m_windowPtr = windowPtr;
  75
  76     // set colours
  77     SetForegroundColour(*wxBLACK);
  78
  79 #ifdef __WXMSW__
  80     wxColour bkCol(wxSystemSettings::GetSystemColour(wxSYS_COLOUR_INFOBK));
  81 #else
  82     wxColour bkCol(wxColour(255, 255, 225));
  83 #endif
  84     SetBackgroundColour(bkCol);
  85
  86     // set size and position
  87     Adjust(text, maxLength);
  88     int x, y;
  89     wxGetMousePosition(&x, &y);
  90     Position(wxPoint(x, y+10), wxSize(0,0));
  91
  92     //Show(TRUE);
  93     Popup();
  94     SetFocus();
  95 }
  96
  97 wxTipWindow::~wxTipWindow()
  98 {
  99     if (m_windowPtr)
 100     {
 101         *m_windowPtr = NULL;
 102     }
 103 }
 104
 105 void wxTipWindow::OnMouseClick(wxMouseEvent& WXUNUSED(event))
 106 {
 107     Close();
 108 }
 109
 110
 111 void wxTipWindow::OnPaint(wxPaintEvent& WXUNUSED(event))
 112 {
 113     wxPaintDC dc(this);
 114
 115     wxRect rect;
 116     wxSize size = GetClientSize();
 117     rect.width = size.x;
 118     rect.height = size.y;
 119
 120     // first filll the background
 121     dc.SetBrush(wxBrush(GetBackgroundColour(), wxSOLID));
 122
 123     dc.SetPen( * wxBLACK_PEN );
 124     dc.DrawRectangle(rect);
 125
 126     // and then draw the text line by line
 127     dc.SetFont(GetFont());
 128
 129     wxPoint pt;
 130     pt.x = TEXT_MARGIN_X;
 131     pt.y = TEXT_MARGIN_Y;
 132     size_t count = m_textLines.GetCount();
 133     for ( size_t n = 0; n < count; n++ )
 134     {
 135         dc.DrawText(m_textLines[n], pt);
 136
 137         pt.y += m_heightLine;
 138     }
 139 }
 140
 141
 142 void wxTipWindow::Adjust(const wxString& text, wxCoord maxLength)
 143 {
 144     wxClientDC dc(this);
 145     dc.SetFont(GetFont());
 146
 147     // calculate the length: we want each line be no longer than maxLength
 148     // pixels and we only break lines at words boundary
 149     wxString current;
 150     wxCoord height, width,
 151             widthMax = 0;
 152     m_heightLine = 0;
 153
 154     bool breakLine = FALSE;
 155     for ( const wxChar *p = text.c_str(); ; p++ )
 156     {
 157         if ( *p == _T('\n') || *p == _T('\0') )
 158         {
 159             dc.GetTextExtent(current, &width, &height);
 160             if ( width > widthMax )
 161                 widthMax = width;
 162
 163             if ( height > m_heightLine )
 164                 m_heightLine = height;
 165
 166             m_textLines.Add(current);
 167
 168             if ( !*p )
 169             {
 170                 // end of text
 171                 break;
 172             }
 173
 174             current.clear();
 175             breakLine = FALSE;
 176         }
 177         else if ( breakLine && (*p == _T(' ') || *p == _T('\t')) )
 178         {
 179             // word boundary - break the line here
 180             m_textLines.Add(current);
 181             current.clear();
 182             breakLine = FALSE;
 183         }
 184         else // line goes on
 185         {
 186             current += *p;
 187             dc.GetTextExtent(current, &width, &height);
 188             if ( width > maxLength )
 189                 breakLine = TRUE;
 190
 191             if ( width > widthMax )
 192                 widthMax = width;
 193
 194             if ( height > m_heightLine )
 195                 m_heightLine = height;
 196         }
 197     }
 198
 199     // take into account the border size and the margins
 200     SetClientSize(2*(TEXT_MARGIN_X + 1) + widthMax,
 201                   2*(TEXT_MARGIN_Y + 1) + m_textLines.GetCount() * m_heightLine);
 202 }
 203
 204
 205 void wxTipWindow::Close()
 206 {
 207     Show(FALSE);
 208     Destroy();
 209 }
 210
 211 #endif // wxUSE_TIPWINDOW
 212