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 #include "wx/button.h"
  17 #include "wx/utils.h"
  18 #include "wx/panel.h"
  19
  20 #ifdef __VMS__
  21 #pragma message disable nosimpint
  22 #endif
  23 #include <Xm/PushBG.h>
  24 #include <Xm/PushB.h>
  25 #ifdef __VMS__
  26 #pragma message enable nosimpint
  27 #endif
  28
  29 #include "wx/motif/private.h"
  30
  31 void wxButtonCallback (Widget w, XtPointer clientData, XtPointer ptr);
  32
  33 IMPLEMENT_DYNAMIC_CLASS(wxButton, wxControl)
  34
  35 // Button
  36
  37 bool wxButton::Create(wxWindow *parent, wxWindowID id, const wxString& label,
  38                       const wxPoint& pos,
  39                       const wxSize& size, long style,
  40                       const wxValidator& validator,
  41                       const wxString& name)
  42 {
  43     SetName(name);
  44     SetValidator(validator);
  45     m_windowStyle = style;
  46     m_backgroundColour = parent->GetBackgroundColour();
  47     m_foregroundColour = parent->GetForegroundColour();
  48     m_font = parent->GetFont();
  49
  50     parent->AddChild((wxButton *)this);
  51
  52     if (id == -1)
  53         m_windowId = NewControlId();
  54     else
  55         m_windowId = id;
  56
  57     wxString label1(wxStripMenuCodes(label));
  58
  59     XmString text = XmStringCreateSimple ((char*) (const char*) label1);
  60     Widget parentWidget = (Widget) parent->GetClientWidget();
  61
  62     XmFontList fontList = (XmFontList) m_font.GetFontList(1.0, XtDisplay(parentWidget));
  63
  64     /*
  65     * Patch Note (important)
  66     * There is no major reason to put a defaultButtonThickness here.
  67     * Not requesting it give the ability to put wxButton with a spacing
  68     * as small as requested. However, if some button become a DefaultButton,
  69     * other buttons are no more aligned -- This is why we set
  70     * defaultButtonThickness of ALL buttons belonging to the same wxPanel,
  71     * in the ::SetDefaultButton method.
  72     */
  73     m_mainWidget = (WXWidget) XtVaCreateManagedWidget ("button",
  74         xmPushButtonWidgetClass,
  75         parentWidget,
  76         XmNfontList, fontList,
  77         XmNlabelString, text,
  78         //                  XmNdefaultButtonShadowThickness, 1, // See comment for wxButton::SetDefault
  79         NULL);
  80
  81     XmStringFree (text);
  82
  83     XtAddCallback ((Widget) m_mainWidget, XmNactivateCallback, (XtCallbackProc) wxButtonCallback,
  84         (XtPointer) this);
  85
  86     SetCanAddEventHandler(TRUE);
  87
  88     int x = 0;  int y = 0;
  89     wxFont new_font( parent->GetFont() );
  90     GetTextExtent( label1, &x, &y, (int*)NULL, (int*)NULL, &new_font );
  91
  92     wxSize newSize = size;
  93     if (newSize.x == -1) newSize.x = 30+x;
  94     if (newSize.y == -1) newSize.y = 27+y;
  95     SetSize( newSize.x, newSize.y );
  96
  97     AttachWidget (parent, m_mainWidget, (WXWidget) NULL, pos.x, pos.y, newSize.x, newSize.y);
  98
  99     ChangeBackgroundColour();
 100
 101     return TRUE;
 102 }
 103
 104 void wxButton::SetDefault()
 105 {
 106     wxWindow *parent = GetParent();
 107     wxPanel *panel = wxDynamicCast(parent, wxPanel);
 108     if ( panel )
 109         panel->SetDefaultItem(this);
 110
 111     // We initially do not set XmNdefaultShadowThickness, to have small buttons.
 112     // Unfortunately, buttons are now mis-aligned. We try to correct this
 113     // now -- setting this ressource to 1 for each button in the same row.
 114     // Because it's very hard to find wxButton in the same row,
 115     // correction is straighforward: we set resource for all wxButton
 116     // in this parent (but not sub panels)
 117     for (wxNode * node = parent->GetChildren().First (); node; node = node->Next ())
 118     {
 119         wxButton *item = (wxButton *) node->Data ();
 120         if (item->IsKindOf(CLASSINFO(wxButton)))
 121         {
 122             bool managed = XtIsManaged((Widget) item->GetMainWidget());
 123             if (managed)
 124                 XtUnmanageChild ((Widget) item->GetMainWidget());
 125
 126             XtVaSetValues ((Widget) item->GetMainWidget(),
 127                 XmNdefaultButtonShadowThickness, 1,
 128                 NULL);
 129
 130             if (managed)
 131                 XtManageChild ((Widget) item->GetMainWidget());
 132         }
 133     } // while
 134
 135     //  XtVaSetValues((Widget)handle, XmNshowAsDefault, 1, NULL);
 136     XtVaSetValues ((Widget) parent->GetMainWidget(), XmNdefaultButton, (Widget) GetMainWidget(), NULL);
 137 }
 138
 139 /* static */
 140 wxSize wxButton::GetDefaultSize()
 141 {
 142     // TODO: check font size as in wxMSW ?  MB
 143     //
 144     return wxSize(80,26);
 145 }
 146
 147 void wxButton::Command (wxCommandEvent & event)
 148 {
 149     ProcessCommand (event);
 150 }
 151
 152 void wxButtonCallback (Widget w, XtPointer clientData, XtPointer WXUNUSED(ptr))
 153 {
 154     if (!wxGetWindowFromTable(w))
 155         // Widget has been deleted!
 156         return;
 157
 158     wxButton *item = (wxButton *) clientData;
 159     wxCommandEvent event (wxEVT_COMMAND_BUTTON_CLICKED, item->GetId());
 160     event.SetEventObject(item);
 161     item->ProcessCommand (event);
 162 }
 163
 164 void wxButton::ChangeFont(bool keepOriginalSize)
 165 {
 166     wxWindow::ChangeFont(keepOriginalSize);
 167 }
 168
 169 void wxButton::ChangeBackgroundColour()
 170 {
 171     DoChangeBackgroundColour(m_mainWidget, m_backgroundColour, TRUE);
 172 }
 173
 174 void wxButton::ChangeForegroundColour()
 175 {
 176     wxWindow::ChangeForegroundColour();
 177 }
 178