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/button.h"
  21 #include "wx/utils.h"
  22 #include "wx/panel.h"
  23
  24 #ifdef __VMS__
  25 #pragma message disable nosimpint
  26 #endif
  27 #include <Xm/PushBG.h>
  28 #include <Xm/PushB.h>
  29 #ifdef __VMS__
  30 #pragma message enable nosimpint
  31 #endif
  32
  33 #include "wx/motif/private.h"
  34
  35 void wxButtonCallback (Widget w, XtPointer clientData, XtPointer ptr);
  36
  37 IMPLEMENT_DYNAMIC_CLASS(wxButton, wxControl)
  38
  39 // Button
  40
  41 bool wxButton::Create(wxWindow *parent, wxWindowID id, const wxString& label,
  42                       const wxPoint& pos,
  43                       const wxSize& size, long style,
  44                       const wxValidator& validator,
  45                       const wxString& name)
  46 {
  47     SetName(name);
  48     SetValidator(validator);
  49     m_windowStyle = style;
  50     m_backgroundColour = parent->GetBackgroundColour();
  51     m_foregroundColour = parent->GetForegroundColour();
  52     m_font = parent->GetFont();
  53
  54     parent->AddChild((wxButton *)this);
  55
  56     if (id == -1)
  57         m_windowId = NewControlId();
  58     else
  59         m_windowId = id;
  60
  61     wxString label1(wxStripMenuCodes(label));
  62
  63     XmString text = XmStringCreateSimple ((char*) (const char*) label1);
  64     Widget parentWidget = (Widget) parent->GetClientWidget();
  65
  66     XmFontList fontList = (XmFontList) m_font.GetFontList(1.0, XtDisplay(parentWidget));
  67
  68     /*
  69     * Patch Note (important)
  70     * There is no major reason to put a defaultButtonThickness here.
  71     * Not requesting it give the ability to put wxButton with a spacing
  72     * as small as requested. However, if some button become a DefaultButton,
  73     * other buttons are no more aligned -- This is why we set
  74     * defaultButtonThickness of ALL buttons belonging to the same wxPanel,
  75     * in the ::SetDefaultButton method.
  76     */
  77     m_mainWidget = (WXWidget) XtVaCreateManagedWidget ("button",
  78         xmPushButtonWidgetClass,
  79         parentWidget,
  80         XmNfontList, fontList,
  81         XmNlabelString, text,
  82         //                  XmNdefaultButtonShadowThickness, 1, // See comment for wxButton::SetDefault
  83         NULL);
  84
  85     XmStringFree (text);
  86
  87     XtAddCallback ((Widget) m_mainWidget, XmNactivateCallback, (XtCallbackProc) wxButtonCallback,
  88         (XtPointer) this);
  89
  90     SetCanAddEventHandler(TRUE);
  91
  92     int x = 0;  int y = 0;
  93     wxFont new_font( parent->GetFont() );
  94     GetTextExtent( label1, &x, &y, (int*)NULL, (int*)NULL, &new_font );
  95
  96     wxSize newSize = size;
  97     if (newSize.x == -1) newSize.x = 30+x;
  98     if (newSize.y == -1) newSize.y = 27+y;
  99     SetSize( newSize.x, newSize.y );
 100
 101     AttachWidget (parent, m_mainWidget, (WXWidget) NULL, pos.x, pos.y, newSize.x, newSize.y);
 102
 103     ChangeBackgroundColour();
 104
 105     return TRUE;
 106 }
 107
 108 void wxButton::SetDefault()
 109 {
 110     wxWindow *parent = GetParent();
 111     wxPanel *panel = wxDynamicCast(parent, wxPanel);
 112     if ( panel )
 113         panel->SetDefaultItem(this);
 114
 115     // We initially do not set XmNdefaultShadowThickness, to have small buttons.
 116     // Unfortunately, buttons are now mis-aligned. We try to correct this
 117     // now -- setting this ressource to 1 for each button in the same row.
 118     // Because it's very hard to find wxButton in the same row,
 119     // correction is straighforward: we set resource for all wxButton
 120     // in this parent (but not sub panels)
 121     for (wxNode * node = parent->GetChildren().First (); node; node = node->Next ())
 122     {
 123         wxButton *item = (wxButton *) node->Data ();
 124         if (item->IsKindOf(CLASSINFO(wxButton)))
 125         {
 126             bool managed = XtIsManaged((Widget) item->GetMainWidget());
 127             if (managed)
 128                 XtUnmanageChild ((Widget) item->GetMainWidget());
 129
 130             XtVaSetValues ((Widget) item->GetMainWidget(),
 131                 XmNdefaultButtonShadowThickness, 1,
 132                 NULL);
 133
 134             if (managed)
 135                 XtManageChild ((Widget) item->GetMainWidget());
 136         }
 137     } // while
 138
 139     //  XtVaSetValues((Widget)handle, XmNshowAsDefault, 1, NULL);
 140     XtVaSetValues ((Widget) parent->GetMainWidget(), XmNdefaultButton, (Widget) GetMainWidget(), NULL);
 141 }
 142
 143 /* static */
 144 wxSize wxButton::GetDefaultSize()
 145 {
 146     // TODO: check font size as in wxMSW ?  MB
 147     //
 148     return wxSize(80,26);
 149 }
 150
 151 void wxButton::Command (wxCommandEvent & event)
 152 {
 153     ProcessCommand (event);
 154 }
 155
 156 void wxButtonCallback (Widget w, XtPointer clientData, XtPointer WXUNUSED(ptr))
 157 {
 158     if (!wxGetWindowFromTable(w))
 159         // Widget has been deleted!
 160         return;
 161
 162     wxButton *item = (wxButton *) clientData;
 163     wxCommandEvent event (wxEVT_COMMAND_BUTTON_CLICKED, item->GetId());
 164     event.SetEventObject(item);
 165     item->ProcessCommand (event);
 166 }
 167
 168 void wxButton::ChangeFont(bool keepOriginalSize)
 169 {
 170     wxWindow::ChangeFont(keepOriginalSize);
 171 }
 172
 173 void wxButton::ChangeBackgroundColour()
 174 {
 175     DoChangeBackgroundColour(m_mainWidget, m_backgroundColour, TRUE);
 176 }
 177
 178 void wxButton::ChangeForegroundColour()
 179 {
 180     wxWindow::ChangeForegroundColour();
 181 }
 182