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