src/motif/button.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        button.cpp
   3 // Purpose:     wxButton
   4 // Author:      Julian Smart
   5 // Modified by:
   6 // Created:     17/09/98
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Julian Smart
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #ifdef __GNUG__
  13 #pragma implementation "button.h"
  14 #endif
  15
  16 #ifdef __VMS
  17 #define XtDisplay XTDISPLAY
  18 #endif
  19
  20 #include "wx/defs.h"
  21
  22 #include "wx/button.h"
  23 #include "wx/utils.h"
  24 #include "wx/panel.h"
  25
  26 #ifdef __VMS__
  27 #pragma message disable nosimpint
  28 #endif
  29 #include <Xm/PushBG.h>
  30 #include <Xm/PushB.h>
  31 #ifdef __VMS__
  32 #pragma message enable nosimpint
  33 #endif
  34
  35 #include "wx/motif/private.h"
  36
  37 void wxButtonCallback (Widget w, XtPointer clientData, XtPointer ptr);
  38
  39 IMPLEMENT_DYNAMIC_CLASS(wxButton, wxControl)
  40
  41 // Button
  42
  43 bool wxButton::Create(wxWindow *parent, wxWindowID id, const wxString& label,
  44                       const wxPoint& pos,
  45                       const wxSize& size, long style,
  46                       const wxValidator& validator,
  47                       const wxString& name)
  48 {
  49     if( !CreateControl( parent, id, pos, size, style, validator, name ) )
  50         return false;
  51
  52     wxString label1(wxStripMenuCodes(label));
  53     wxXmString text( label1 );
  54
  55     Widget parentWidget = (Widget) parent->GetClientWidget();
  56
  57     /*
  58     * Patch Note (important)
  59     * There is no major reason to put a defaultButtonThickness here.
  60     * Not requesting it give the ability to put wxButton with a spacing
  61     * as small as requested. However, if some button become a DefaultButton,
  62     * other buttons are no more aligned -- This is why we set
  63     * defaultButtonThickness of ALL buttons belonging to the same wxPanel,
  64     * in the ::SetDefaultButton method.
  65     */
  66     m_mainWidget = (WXWidget) XtVaCreateManagedWidget ("button",
  67         xmPushButtonWidgetClass,
  68         parentWidget,
  69         wxFont::GetFontTag(), m_font.GetFontType(XtDisplay(parentWidget)),
  70         XmNlabelString, text(),
  71         // See comment for wxButton::SetDefault
  72         // XmNdefaultButtonShadowThickness, 1,
  73         NULL);
  74
  75     XtAddCallback ((Widget) m_mainWidget,
  76                    XmNactivateCallback, (XtCallbackProc) wxButtonCallback,
  77                    (XtPointer) this);
  78
  79     SetCanAddEventHandler(TRUE);
  80
  81     wxSize best = GetBestSize();
  82     if( size.x != -1 ) best.x = size.x;
  83     if( size.y != -1 ) best.y = size.y;
  84
  85     AttachWidget (parent, m_mainWidget, (WXWidget) NULL,
  86                   pos.x, pos.y, best.x, best.y);
  87
  88     ChangeBackgroundColour();
  89
  90     return TRUE;
  91 }
  92
  93 void wxButton::SetDefaultShadowThicknessAndResize()
  94 {
  95     Widget buttonWidget = (Widget)GetMainWidget();
  96     bool managed = XtIsManaged( buttonWidget );
  97     if( managed )
  98         XtUnmanageChild( buttonWidget );
  99
 100     XtVaSetValues( buttonWidget,
 101                    XmNdefaultButtonShadowThickness, 1,
 102                    NULL );
 103
 104     if( managed )
 105         XtManageChild( buttonWidget );
 106
 107     wxSize best = GetBestSize(), actual = GetSize();
 108     if( best.x < actual.x ) best.x = actual.x;
 109     if( best.y < actual.y ) best.y = actual.y;
 110
 111     if( best != actual )
 112         SetSize( best );
 113 }
 114
 115
 116 void wxButton::SetDefault()
 117 {
 118     wxWindow *parent = GetParent();
 119     if ( parent )
 120         parent->SetDefaultItem(this);
 121
 122     // We initially do not set XmNdefaultShadowThickness, to have
 123     // small buttons.  Unfortunately, buttons are now mis-aligned. We
 124     // try to correct this now -- setting this ressource to 1 for each
 125     // button in the same row.  Because it's very hard to find
 126     // wxButton in the same row, correction is straighforward: we set
 127     // resource for all wxButton in this parent (but not sub panels)
 128
 129     for (wxWindowList::Node * node = parent->GetChildren().GetFirst ();
 130          node; node = node->GetNext ())
 131     {
 132         wxWindow *win = node->GetData ();
 133         wxButton *item = wxDynamicCast(win, wxButton);
 134         if (item)
 135             item->SetDefaultShadowThicknessAndResize();
 136     }
 137
 138     XtVaSetValues ((Widget) parent->GetMainWidget(),
 139                    XmNdefaultButton, (Widget) GetMainWidget(),
 140                    NULL);
 141 }
 142
 143 /* static */
 144 wxSize wxButton::GetDefaultSize()
 145 {
 146     // TODO: check font size as in wxMSW ?  MB
 147     // Note: this is only the button size (text + margin + shadow)
 148     return wxSize(70,25);
 149 }
 150
 151 wxSize wxButton::DoGetBestSize() const
 152 {
 153     Dimension xmargin, ymargin, highlight, shadow, defThickness;
 154
 155     XtVaGetValues( (Widget)m_mainWidget,
 156                    XmNmarginWidth, &xmargin,
 157                    XmNmarginHeight, &ymargin,
 158                    XmNhighlightThickness, &highlight,
 159                    XmNshadowThickness, &shadow,
 160                    XmNdefaultButtonShadowThickness, &defThickness,
 161                    NULL );
 162
 163     int x = 0;  int y = 0;
 164     GetTextExtent( GetLabel(), &x, &y );
 165
 166     int margin = highlight * 2 +
 167         ( defThickness ? ( ( shadow + defThickness ) * 4 ) : ( shadow * 2 ) );
 168     wxSize best( x + xmargin * 2 + margin,
 169                  y + ymargin * 2 + margin );
 170
 171     // all buttons have at least the standard size unless the user explicitly
 172     // wants them to be of smaller size and used wxBU_EXACTFIT style when
 173     // creating the button
 174     if( !HasFlag( wxBU_EXACTFIT ) )
 175     {
 176         wxSize def = GetDefaultSize();
 177         int margin =  highlight * 2 +
 178             ( defThickness ? ( shadow * 4 + defThickness * 4 ) : 0 );
 179         def.x += margin;
 180         def.y += margin;
 181
 182         if( def.x > best.x )
 183             best.x = def.x;
 184         if( def.y > best.y )
 185             best.y = def.y;
 186     }
 187
 188     return best;
 189 }
 190
 191 void wxButton::Command (wxCommandEvent & event)
 192 {
 193     ProcessCommand (event);
 194 }
 195
 196 void wxButtonCallback (Widget w, XtPointer clientData, XtPointer WXUNUSED(ptr))
 197 {
 198     if (!wxGetWindowFromTable(w))
 199         // Widget has been deleted!
 200         return;
 201
 202     wxButton *item = (wxButton *) clientData;
 203     wxCommandEvent event (wxEVT_COMMAND_BUTTON_CLICKED, item->GetId());
 204     event.SetEventObject(item);
 205     item->ProcessCommand (event);
 206 }