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 #include "wx/button.h"
  16
  17 #ifdef __VMS__
  18 #pragma message disable nosimpint
  19 #endif
  20 #include <Xm/PushBG.h>
  21 #include <Xm/PushB.h>
  22 #ifdef __VMS__
  23 #pragma message enable nosimpint
  24 #endif
  25
  26
  27 #ifndef WX_PRECOMP
  28     #include "wx/toplevel.h"
  29 #endif
  30
  31 #include "wx/stockitem.h"
  32 #include "wx/motif/private.h"
  33 #include "wx/sysopt.h"
  34
  35 void wxButtonCallback (Widget w, XtPointer clientData, XtPointer ptr);
  36
  37 IMPLEMENT_DYNAMIC_CLASS(wxButton, wxControl)
  38
  39 #define MIN_WIDTH 78
  40 #define MIN_LARGE_HEIGHT 30
  41
  42 // Button
  43
  44 bool wxButton::Create(wxWindow *parent, wxWindowID id, const wxString& lbl,
  45                       const wxPoint& pos,
  46                       const wxSize& size, long style,
  47                       const wxValidator& validator,
  48                       const wxString& name)
  49 {
  50     wxString label(lbl);
  51     if (label.empty() && wxIsStockID(id))
  52         label = wxGetStockLabel(id);
  53
  54     if( !CreateControl( parent, id, pos, size, style, validator, name ) )
  55         return false;
  56     PreCreation();
  57
  58     wxXmString text( GetLabelText(label) );
  59
  60     Widget parentWidget = (Widget) parent->GetClientWidget();
  61
  62     /*
  63     * Patch Note (important)
  64     * There is no major reason to put a defaultButtonThickness here.
  65     * Not requesting it give the ability to put wxButton with a spacing
  66     * as small as requested. However, if some button become a DefaultButton,
  67     * other buttons are no more aligned -- This is why we set
  68     * defaultButtonThickness of ALL buttons belonging to the same wxPanel,
  69     * in the ::SetDefaultButton method.
  70     */
  71     m_mainWidget = (WXWidget) XtVaCreateManagedWidget ("button",
  72         xmPushButtonWidgetClass,
  73         parentWidget,
  74         wxFont::GetFontTag(), m_font.GetFontTypeC(XtDisplay(parentWidget)),
  75         XmNlabelString, text(),
  76         XmNrecomputeSize, False,
  77         // See comment for wxButton::SetDefault
  78         // XmNdefaultButtonShadowThickness, 1,
  79         NULL);
  80
  81     XtAddCallback ((Widget) m_mainWidget,
  82                    XmNactivateCallback, (XtCallbackProc) wxButtonCallback,
  83                    (XtPointer) this);
  84
  85     wxSize best = GetBestSize();
  86     if( size.x != -1 ) best.x = size.x;
  87     if( size.y != -1 ) best.y = size.y;
  88
  89     PostCreation();
  90     AttachWidget (parent, m_mainWidget, (WXWidget) NULL,
  91                   pos.x, pos.y, best.x, best.y);
  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 wxWindow *wxButton::SetDefault()
 125 {
 126     wxWindow *oldDefault = wxButtonBase::SetDefault();
 127
 128     // We initially do not set XmNdefaultShadowThickness, to have
 129     // small buttons.  Unfortunately, buttons are now mis-aligned. We
 130     // try to correct this now -- setting this ressource to 1 for each
 131     // button in the same row.  Because it's very hard to find
 132     // wxButton in the same row, correction is straighforward: we set
 133     // resource for all wxButton in this parent (but not sub panels)
 134
 135     wxWindow *parent = GetParent();
 136     for (wxWindowList::compatibility_iterator node = parent->GetChildren().GetFirst ();
 137          node; node = node->GetNext ())
 138     {
 139         wxWindow *win = node->GetData ();
 140         wxButton *item = wxDynamicCast(win, wxButton);
 141         if (item)
 142             item->SetDefaultShadowThicknessAndResize();
 143     }
 144
 145     XtVaSetValues ((Widget) parent->GetMainWidget(),
 146                    XmNdefaultButton, (Widget) GetMainWidget(),
 147                    NULL);
 148
 149     return oldDefault;
 150 }
 151
 152 static inline bool wxMotifLargeButtons()
 153 {
 154     return wxSystemOptions::HasOption("motif.largebuttons")
 155         && wxSystemOptions::GetOptionInt("motif.largebuttons") != 0;
 156 }
 157
 158 /* static */
 159 wxSize wxButton::GetDefaultSize()
 160 {
 161     // TODO: check font size as in wxMSW ?  MB
 162     // Note: this is the button size (text + margin + shadow + defaultBorder)
 163     return wxSize( MIN_WIDTH, MIN_LARGE_HEIGHT );
 164 }
 165
 166 wxSize wxButton::DoGetBestSize() const
 167 {
 168     if( wxMotifLargeButtons() )
 169         return OldGetBestSize();
 170
 171     wxSize best = wxControl::DoGetBestSize();
 172
 173     if( HasFlag( wxBU_EXACTFIT ) )
 174         return best;
 175     else if( best.x < MIN_WIDTH )
 176         best.x = MIN_WIDTH;
 177
 178     return best;
 179 }
 180
 181 wxSize wxButton::GetMinSize() const
 182 {
 183     if( wxMotifLargeButtons() )
 184         return OldGetMinSize();
 185
 186     return DoGetBestSize();
 187 }
 188
 189 wxSize wxButton::OldGetMinSize() const
 190 {
 191     return OldGetBestSize();
 192 }
 193
 194 wxSize wxButton::OldGetBestSize() const
 195 {
 196     Dimension xmargin, ymargin, highlight, shadow, defThickness;
 197
 198     XtVaGetValues( (Widget)m_mainWidget,
 199                    XmNmarginWidth, &xmargin,
 200                    XmNmarginHeight, &ymargin,
 201                    XmNhighlightThickness, &highlight,
 202                    XmNshadowThickness, &shadow,
 203                    XmNdefaultButtonShadowThickness, &defThickness,
 204                    NULL );
 205
 206     int x = 0;  int y = 0;
 207     GetTextExtent( GetLabel(), &x, &y );
 208
 209     int margin = highlight * 2 +
 210         ( defThickness ? ( ( shadow + defThickness ) * 4 ) : ( shadow * 2 ) );
 211
 212     wxSize best( x + xmargin * 2 + margin,
 213                  y + ymargin * 2 + margin );
 214
 215     // all buttons have at least the standard size unless the user explicitly
 216     // wants them to be of smaller size and used wxBU_EXACTFIT style when
 217     // creating the button
 218     if( !HasFlag( wxBU_EXACTFIT ) )
 219     {
 220         wxSize def = GetDefaultSize();
 221         int margin =  highlight * 2 +
 222             ( defThickness ? ( shadow * 4 + defThickness * 4 ) : 0 );
 223         def.x += margin;
 224         def.y += margin;
 225
 226         if( def.x > best.x )
 227             best.x = def.x;
 228         if( def.y > best.y )
 229             best.y = def.y;
 230     }
 231
 232     return best;
 233 }
 234
 235 void wxButton::Command (wxCommandEvent & event)
 236 {
 237     ProcessCommand (event);
 238 }
 239
 240 void wxButtonCallback (Widget w, XtPointer clientData, XtPointer WXUNUSED(ptr))
 241 {
 242     if (!wxGetWindowFromTable(w))
 243         // Widget has been deleted!
 244         return;
 245
 246     wxButton *item = (wxButton *) clientData;
 247     wxCommandEvent event (wxEVT_COMMAND_BUTTON_CLICKED, item->GetId());
 248     event.SetEventObject(item);
 249     item->ProcessCommand (event);
 250 }