src/motif/button.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/motif/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 // For compilers that support precompilation, includes "wx.h".
  13 #include "wx/wxprec.h"
  14
  15 #ifdef __VMS
  16 #define XtDisplay XTDISPLAY
  17 #endif
  18
  19 #include "wx/button.h"
  20
  21 #ifdef __VMS__
  22 #pragma message disable nosimpint
  23 #endif
  24 #include <Xm/PushBG.h>
  25 #include <Xm/PushB.h>
  26 #ifdef __VMS__
  27 #pragma message enable nosimpint
  28 #endif
  29
  30 #include "wx/stockitem.h"
  31 #include "wx/motif/private.h"
  32 #include "wx/sysopt.h"
  33
  34 void wxButtonCallback (Widget w, XtPointer clientData, XtPointer ptr);
  35
  36 IMPLEMENT_DYNAMIC_CLASS(wxButton, wxControl)
  37
  38 #define MIN_WIDTH 78
  39 #define MIN_LARGE_HEIGHT 30
  40
  41 // Button
  42
  43 bool wxButton::Create(wxWindow *parent, wxWindowID id, const wxString& lbl,
  44                       const wxPoint& pos,
  45                       const wxSize& size, long style,
  46                       const wxValidator& validator,
  47                       const wxString& name)
  48 {
  49     wxString label(lbl);
  50     if (label.empty() && wxIsStockID(id))
  51         label = wxGetStockLabel(id);
  52
  53     if( !CreateControl( parent, id, pos, size, style, validator, name ) )
  54         return false;
  55
  56     wxString label1(wxStripMenuCodes(label));
  57     wxXmString text( label1 );
  58
  59     Widget parentWidget = (Widget) parent->GetClientWidget();
  60
  61     /*
  62     * Patch Note (important)
  63     * There is no major reason to put a defaultButtonThickness here.
  64     * Not requesting it give the ability to put wxButton with a spacing
  65     * as small as requested. However, if some button become a DefaultButton,
  66     * other buttons are no more aligned -- This is why we set
  67     * defaultButtonThickness of ALL buttons belonging to the same wxPanel,
  68     * in the ::SetDefaultButton method.
  69     */
  70     m_mainWidget = (WXWidget) XtVaCreateManagedWidget ("button",
  71         xmPushButtonWidgetClass,
  72         parentWidget,
  73         wxFont::GetFontTag(), m_font.GetFontTypeC(XtDisplay(parentWidget)),
  74         XmNlabelString, text(),
  75         XmNrecomputeSize, False,
  76         // See comment for wxButton::SetDefault
  77         // XmNdefaultButtonShadowThickness, 1,
  78         NULL);
  79
  80     XtAddCallback ((Widget) m_mainWidget,
  81                    XmNactivateCallback, (XtCallbackProc) wxButtonCallback,
  82                    (XtPointer) this);
  83
  84     wxSize best = GetBestSize();
  85     if( size.x != -1 ) best.x = size.x;
  86     if( size.y != -1 ) best.y = size.y;
  87
  88     AttachWidget (parent, m_mainWidget, (WXWidget) NULL,
  89                   pos.x, pos.y, best.x, best.y);
  90
  91     ChangeBackgroundColour();
  92
  93     return true;
  94 }
  95
  96 void wxButton::SetDefaultShadowThicknessAndResize()
  97 {
  98     Widget buttonWidget = (Widget)GetMainWidget();
  99     bool managed = XtIsManaged( buttonWidget );
 100     if( managed )
 101         XtUnmanageChild( buttonWidget );
 102
 103     XtVaSetValues( buttonWidget,
 104                    XmNdefaultButtonShadowThickness, 1,
 105                    NULL );
 106
 107     if( managed )
 108         XtManageChild( buttonWidget );
 109
 110     // this can't currently be done, because user code that calls SetDefault
 111     // will break otherwise
 112 #if 0
 113     wxSize best = GetBestSize(), actual = GetSize();
 114     if( best.x < actual.x ) best.x = actual.x;
 115     if( best.y < actual.y ) best.y = actual.y;
 116
 117     if( best != actual )
 118         SetSize( best );
 119 #endif
 120     InvalidateBestSize();
 121 }
 122
 123
 124 void wxButton::SetDefault()
 125 {
 126     wxWindow *parent = GetParent();
 127     if ( parent )
 128         parent->SetDefaultItem(this);
 129
 130     // We initially do not set XmNdefaultShadowThickness, to have
 131     // small buttons.  Unfortunately, buttons are now mis-aligned. We
 132     // try to correct this now -- setting this ressource to 1 for each
 133     // button in the same row.  Because it's very hard to find
 134     // wxButton in the same row, correction is straighforward: we set
 135     // resource for all wxButton in this parent (but not sub panels)
 136
 137     for (wxWindowList::compatibility_iterator node = parent->GetChildren().GetFirst ();
 138          node; node = node->GetNext ())
 139     {
 140         wxWindow *win = node->GetData ();
 141         wxButton *item = wxDynamicCast(win, wxButton);
 142         if (item)
 143             item->SetDefaultShadowThicknessAndResize();
 144     }
 145
 146     XtVaSetValues ((Widget) parent->GetMainWidget(),
 147                    XmNdefaultButton, (Widget) GetMainWidget(),
 148                    NULL);
 149 }
 150
 151 static inline bool wxMotifLargeButtons()
 152 {
 153     return wxSystemOptions::HasOption("motif.largebuttons")
 154         && wxSystemOptions::GetOptionInt("motif.largebuttons") != 0;
 155 }
 156
 157 /* static */
 158 wxSize wxButton::GetDefaultSize()
 159 {
 160     // TODO: check font size as in wxMSW ?  MB
 161     // Note: this is the button size (text + margin + shadow + defaultBorder)
 162     return wxSize( MIN_WIDTH, MIN_LARGE_HEIGHT );
 163 }
 164
 165 wxSize wxButton::DoGetBestSize() const
 166 {
 167     if( wxMotifLargeButtons() )
 168         return OldGetBestSize();
 169
 170     wxSize best = wxControl::DoGetBestSize();
 171
 172     if( HasFlag( wxBU_EXACTFIT ) )
 173         return best;
 174     else if( best.x < MIN_WIDTH )
 175         best.x = MIN_WIDTH;
 176
 177     return best;
 178 }
 179
 180 wxSize wxButton::GetMinSize() const
 181 {
 182     if( wxMotifLargeButtons() )
 183         return OldGetMinSize();
 184
 185     return DoGetBestSize();
 186 }
 187
 188 wxSize wxButton::OldGetMinSize() const
 189 {
 190     return OldGetBestSize();
 191 }
 192
 193 wxSize wxButton::OldGetBestSize() const
 194 {
 195     Dimension xmargin, ymargin, highlight, shadow, defThickness;
 196
 197     XtVaGetValues( (Widget)m_mainWidget,
 198                    XmNmarginWidth, &xmargin,
 199                    XmNmarginHeight, &ymargin,
 200                    XmNhighlightThickness, &highlight,
 201                    XmNshadowThickness, &shadow,
 202                    XmNdefaultButtonShadowThickness, &defThickness,
 203                    NULL );
 204
 205     int x = 0;  int y = 0;
 206     GetTextExtent( GetLabel(), &x, &y );
 207
 208     int margin = highlight * 2 +
 209         ( defThickness ? ( ( shadow + defThickness ) * 4 ) : ( shadow * 2 ) );
 210
 211     wxSize best( x + xmargin * 2 + margin,
 212                  y + ymargin * 2 + margin );
 213
 214     // all buttons have at least the standard size unless the user explicitly
 215     // wants them to be of smaller size and used wxBU_EXACTFIT style when
 216     // creating the button
 217     if( !HasFlag( wxBU_EXACTFIT ) )
 218     {
 219         wxSize def = GetDefaultSize();
 220         int margin =  highlight * 2 +
 221             ( defThickness ? ( shadow * 4 + defThickness * 4 ) : 0 );
 222         def.x += margin;
 223         def.y += margin;
 224
 225         if( def.x > best.x )
 226             best.x = def.x;
 227         if( def.y > best.y )
 228             best.y = def.y;
 229     }
 230
 231     return best;
 232 }
 233
 234 void wxButton::Command (wxCommandEvent & event)
 235 {
 236     ProcessCommand (event);
 237 }
 238
 239 void wxButtonCallback (Widget w, XtPointer clientData, XtPointer WXUNUSED(ptr))
 240 {
 241     if (!wxGetWindowFromTable(w))
 242         // Widget has been deleted!
 243         return;
 244
 245     wxButton *item = (wxButton *) clientData;
 246     wxCommandEvent event (wxEVT_COMMAND_BUTTON_CLICKED, item->GetId());
 247     event.SetEventObject(item);
 248     item->ProcessCommand (event);
 249 }