[#1577388] - fix for scaling in wxImage.

[wxWidgets.git] / src / motif / choice.cpp

diff --git a/src/motif/choice.cpp b/src/motif/choice.cpp
index 9ba26a3a032f80eb9a4cf7623348f5124f43de46..585c467600427ab9b8ebef615139340c1ef19e9c 100644 (file)
--- a/src/motif/choice.cpp
+++ b/src/motif/choice.cpp
@@ -1,114 +1,418 @@
 /////////////////////////////////////////////////////////////////////////////
 /////////////////////////////////////////////////////////////////////////////

-// Name:        choice.cpp
+// Name:        src/motif/choice.cpp

 // Purpose:     wxChoice
 // Author:      Julian Smart
 // Modified by:
 // Created:     17/09/98
 // RCS-ID:      $Id$
 // Copyright:   (c) Julian Smart
 // Purpose:     wxChoice
 // Author:      Julian Smart
 // Modified by:
 // Created:     17/09/98
 // RCS-ID:      $Id$
 // Copyright:   (c) Julian Smart

-// Licence:    wxWindows licence
+// Licence:     wxWindows licence

 /////////////////////////////////////////////////////////////////////////////
 
 /////////////////////////////////////////////////////////////////////////////
 

-#ifdef __GNUG__
-#pragma implementation "choice.h"
+// For compilers that support precompilation, includes "wx.h".
+#include "wx/wxprec.h"
+
+#if wxUSE_CHOICE
+
+#ifdef __VMS
+#define XtDisplay XTDISPLAY
+#define XtParent XTPARENT

 #endif
 
 #endif
 

-// For compilers that support precompilation, includes "wx.h".

 #include "wx/choice.h"
 
 #include "wx/choice.h"
 

-#if !USE_SHARED_LIBRARY
+#ifndef WX_PRECOMP
+    #include "wx/utils.h"
+    #include "wx/arrstr.h"
+#endif
+
+#ifdef __VMS__
+#pragma message disable nosimpint
+#endif
+#include <Xm/Xm.h>
+#include <Xm/PushBG.h>
+#include <Xm/PushB.h>
+#include <Xm/RowColumn.h>
+#ifdef __VMS__
+#pragma message enable nosimpint
+#endif
+
+#include "wx/motif/private.h"
+
+#define WIDTH_OVERHEAD 48
+#define WIDTH_OVERHEAD_SUBTRACT 40
+#define HEIGHT_OVERHEAD 15
+

 IMPLEMENT_DYNAMIC_CLASS(wxChoice, wxControl)
 IMPLEMENT_DYNAMIC_CLASS(wxChoice, wxControl)

+
+void wxChoiceCallback (Widget w, XtPointer clientData,
+                       XtPointer ptr);
+
+wxChoice::wxChoice()
+{
+    Init();
+}
+
+void wxChoice::Init()
+{
+    m_noStrings = 0;
+    m_buttonWidget = (WXWidget) 0;
+    m_menuWidget = (WXWidget) 0;
+    m_formWidget = (WXWidget) 0;
+}
+
+bool wxChoice::Create(wxWindow *parent, wxWindowID id,
+                      const wxPoint& pos,
+                      const wxSize& size,
+                      int n, const wxString choices[],
+                      long style,
+                      const wxValidator& validator,
+                      const wxString& name)
+{
+    if ( !CreateControl(parent, id, pos, size, style, validator, name) )
+        return false;
+
+    Widget parentWidget = (Widget) parent->GetClientWidget();
+
+    m_formWidget = (WXWidget) XtVaCreateManagedWidget(name.c_str(),
+        xmRowColumnWidgetClass, parentWidget,
+        XmNmarginHeight, 0,
+        XmNmarginWidth, 0,
+        XmNpacking, XmPACK_TIGHT,
+        XmNorientation, XmHORIZONTAL,
+        XmNresizeWidth, False,
+        XmNresizeHeight, False,
+        NULL);
+
+    XtVaSetValues ((Widget) m_formWidget, XmNspacing, 0, NULL);
+
+    /*
+    * Create the popup menu
+    */
+    m_menuWidget = (WXWidget) XmCreatePulldownMenu ((Widget) m_formWidget,
+                                                    wxMOTIF_STR("choiceMenu"),
+                                                    NULL, 0);
+
+    if (n > 0)
+    {
+        int i;
+        for (i = 0; i < n; i++)
+            Append (choices[i]);
+    }
+
+    /*
+    * Create button
+    */
+    Arg args[10];
+    Cardinal argcnt = 0;
+
+    XtSetArg (args[argcnt], XmNsubMenuId, (Widget) m_menuWidget); ++argcnt;
+    XtSetArg (args[argcnt], XmNmarginWidth, 0); ++argcnt;
+    XtSetArg (args[argcnt], XmNmarginHeight, 0); ++argcnt;
+    XtSetArg (args[argcnt], XmNpacking, XmPACK_TIGHT); ++argcnt;
+    m_buttonWidget = (WXWidget) XmCreateOptionMenu ((Widget) m_formWidget,
+                                                    wxMOTIF_STR("choiceButton"),
+                                                    args, argcnt);
+
+    m_mainWidget = m_buttonWidget;
+
+    XtManageChild ((Widget) m_buttonWidget);
+
+    // New code from Roland Haenel (roland_haenel@ac.cybercity.de)
+    // Some time ago, I reported a problem with wxChoice-items under
+    // Linux and Motif 2.0 (they caused sporadic GPFs). Now it seems
+    // that I have found the code responsible for this behaviour.
+#if XmVersion >= 1002
+#if XmVersion <  2000
+    // JACS, 24/1/99: this seems to cause a malloc crash later on, e.g.
+    // in controls sample.
+    //
+    // Widget optionLabel = XmOptionLabelGadget ((Widget) m_buttonWidget);
+    // XtUnmanageChild (optionLabel);

 #endif
 #endif

+#endif
+
+    wxSize bestSize = GetBestSize();
+    if( size.x > 0 ) bestSize.x = size.x;
+    if( size.y > 0 ) bestSize.y = size.y;
+
+    XtVaSetValues((Widget) m_formWidget, XmNresizePolicy, XmRESIZE_NONE, NULL);
+
+    ChangeFont(false);
+    ChangeBackgroundColour();
+
+    AttachWidget (parent, m_buttonWidget, m_formWidget,
+                  pos.x, pos.y, bestSize.x, bestSize.y);
+
+    return true;
+}

 
 bool wxChoice::Create(wxWindow *parent, wxWindowID id,
 
 bool wxChoice::Create(wxWindow *parent, wxWindowID id,

-           const wxPoint& pos,
-           const wxSize& size,
-                  int n, const wxString choices[],
-                  long style,
-           const wxValidator& validator,
-           const wxString& name)
-{
-    SetName(name);
-    SetValidator(validator);
-    m_noStrings = n;
-    m_windowStyle = style;
-
-    if (parent) parent->AddChild(this);
-
-    if ( id == -1 )
-       m_windowId = (int)NewControlId();
-    else
-       m_windowId = id;
+                      const wxPoint& pos,
+                      const wxSize& size,
+                      const wxArrayString& choices,
+                      long style,
+                      const wxValidator& validator,
+                      const wxString& name)
+{
+    wxCArrayString chs(choices);
+    return Create(parent, id, pos, size, chs.GetCount(), chs.GetStrings(),
+                  style, validator, name);
+}

 
 

-    // TODO: create choice control
-    return FALSE;
+wxChoice::~wxChoice()
+{
+    // For some reason destroying the menuWidget
+    // can cause crashes on some machines. It will
+    // be deleted implicitly by deleting the parent form
+    // anyway.
+    //  XtDestroyWidget (menuWidget);
+
+    if (GetMainWidget())
+    {
+        DetachWidget(GetMainWidget()); // Removes event handlers
+        DetachWidget(m_formWidget);
+
+        XtDestroyWidget((Widget) m_formWidget);
+        m_formWidget = (WXWidget) 0;
+
+        // Presumably the other widgets have been deleted now, via the form
+        m_mainWidget = (WXWidget) 0;
+        m_buttonWidget = (WXWidget) 0;
+    }
+    if ( HasClientObjectData() )
+        m_clientDataDict.DestroyData();
+}
+
+static inline wxChar* MYcopystring(const wxChar* s)
+{
+    wxChar* copy = new wxChar[wxStrlen(s) + 1];
+    return wxStrcpy(copy, s);

 }
 
 }
 

-void wxChoice::Append(const wxString& item)
+int wxChoice::DoInsert(const wxString& item, unsigned int pos)

 {
 {

-    // TODO
+#ifndef XmNpositionIndex
+    wxCHECK_MSG( pos == GetCount(), -1, wxT("insert not implemented"));
+#endif
+    Widget w = XtVaCreateManagedWidget (GetLabelText(item),
+#if wxUSE_GADGETS
+        xmPushButtonGadgetClass, (Widget) m_menuWidget,
+#else
+        xmPushButtonWidgetClass, (Widget) m_menuWidget,
+#endif
+#ifdef XmNpositionIndex
+        XmNpositionIndex, pos,
+#endif
+        NULL);
+
+    wxDoChangeBackgroundColour((WXWidget) w, m_backgroundColour);
+
+    if( m_font.Ok() )
+        wxDoChangeFont( w, m_font );
+
+    m_widgetArray.Insert(w, pos);
+
+    char mnem = wxFindMnemonic (item);
+    if (mnem != 0)
+        XtVaSetValues (w, XmNmnemonic, mnem, NULL);
+
+    XtAddCallback (w, XmNactivateCallback,
+                   (XtCallbackProc) wxChoiceCallback,
+                   (XtPointer) this);
+
+    if (m_noStrings == 0 && m_buttonWidget)
+    {
+        XtVaSetValues ((Widget) m_buttonWidget, XmNmenuHistory, w, NULL);
+        Widget label = XmOptionButtonGadget ((Widget) m_buttonWidget);
+        wxXmString text( item );
+        XtVaSetValues (label,
+            XmNlabelString, text(),
+            NULL);
+    }
+    // need to ditch wxStringList for wxArrayString
+    m_stringList.Insert(pos, MYcopystring(item));

     m_noStrings ++;
     m_noStrings ++;

+
+    return pos;

 }
 
 }
 

-void wxChoice::Delete(int n)
+int wxChoice::DoAppend(const wxString& item)

 {
 {

-    // TODO
-    m_noStrings --;
+    return DoInsert(item, GetCount());
+}
+
+void wxChoice::Delete(unsigned int n)
+{
+    Widget w = (Widget)m_widgetArray[n];
+    XtRemoveCallback(w, XmNactivateCallback, (XtCallbackProc)wxChoiceCallback,
+                     (XtPointer)this);
+    m_stringList.Erase(m_stringList.Item(n));
+    m_widgetArray.RemoveAt(size_t(n));
+    m_clientDataDict.Delete(n, HasClientObjectData());
+
+    XtDestroyWidget(w);
+    m_noStrings--;

 }
 
 void wxChoice::Clear()
 {
 }
 
 void wxChoice::Clear()
 {

-    // TODO
+    m_stringList.Clear ();
+    unsigned int i;
+    for (i = 0; i < m_noStrings; i++)
+    {
+        XtRemoveCallback((Widget) m_widgetArray[i],
+                         XmNactivateCallback, (XtCallbackProc)wxChoiceCallback,
+                         (XtPointer)this);
+        XtUnmanageChild ((Widget) m_widgetArray[i]);
+        XtDestroyWidget ((Widget) m_widgetArray[i]);
+    }
+    m_widgetArray.Clear();
+    if (m_buttonWidget)
+        XtVaSetValues ((Widget) m_buttonWidget,
+                       XmNmenuHistory, (Widget) NULL,
+                       NULL);
+
+    if ( HasClientObjectData() )
+        m_clientDataDict.DestroyData();
+

     m_noStrings = 0;
 }
 
 int wxChoice::GetSelection() const
 {
     m_noStrings = 0;
 }
 
 int wxChoice::GetSelection() const
 {

-    // TODO
-    return 0;
+    XmString text;
+    Widget label = XmOptionButtonGadget ((Widget) m_buttonWidget);
+    XtVaGetValues (label,
+        XmNlabelString, &text,
+        NULL);
+    wxXmString freeMe(text);
+    wxString s = wxXmStringToString( text );
+
+    if (!s.empty())
+    {
+        int i = 0;
+        for (wxStringList::compatibility_iterator node = m_stringList.GetFirst ();
+             node; node = node->GetNext ())
+        {
+            if (wxStrcmp(node->GetData(), s.c_str()) == 0)
+            {
+                return i;
+            }
+            else
+                i++;
+        }            // for()
+
+        return -1;
+    }
+    return -1;

 }
 
 void wxChoice::SetSelection(int n)
 {
 }
 
 void wxChoice::SetSelection(int n)
 {

-    // TODO
+    m_inSetValue = true;
+
+    wxStringList::compatibility_iterator node = m_stringList.Item(n);
+    if (node)
+    {
+#if 0
+        Dimension selectionWidth, selectionHeight;
+#endif
+        wxXmString text( node->GetData() );
+// MBN: this seems silly, at best, and causes wxChoices to be clipped:
+//      will remove "soon"
+#if 0
+        XtVaGetValues ((Widget) m_widgetArray[n],
+                       XmNwidth, &selectionWidth,
+                       XmNheight, &selectionHeight,
+                       NULL);
+#endif
+        Widget label = XmOptionButtonGadget ((Widget) m_buttonWidget);
+        XtVaSetValues (label,
+            XmNlabelString, text(),
+            NULL);
+#if 0
+        XtVaSetValues ((Widget) m_buttonWidget,
+            XmNwidth, selectionWidth, XmNheight, selectionHeight,
+            XmNmenuHistory, (Widget) m_widgetArray[n], NULL);
+#endif
+    }
+    m_inSetValue = false;

 }
 
 }
 

-int wxChoice::FindString(const wxString& s) const
+wxString wxChoice::GetString(unsigned int n) const

 {
 {

-    // TODO
-    return 0;
+    wxStringList::compatibility_iterator node = m_stringList.Item(n);
+    if (node)
+        return node->GetData();
+    else
+        return wxEmptyString;

 }
 
 }
 

-wxString wxChoice::GetString(int n) const
+void wxChoice::SetColumns(int n)

 {
 {

-    // TODO
-    return wxString("");
+    if (n<1) n = 1 ;
+
+    short numColumns = (short)n ;
+    Arg args[3];
+
+    XtSetArg(args[0], XmNnumColumns, numColumns);
+    XtSetArg(args[1], XmNpacking, XmPACK_COLUMN);
+    XtSetValues((Widget) m_menuWidget,args,2) ;

 }
 
 }
 

-void wxChoice::SetSize(int x, int y, int width, int height, int sizeFlags)
+int wxChoice::GetColumns(void) const

 {
 {

-    // TODO
+    short numColumns ;
+
+    XtVaGetValues((Widget) m_menuWidget,XmNnumColumns,&numColumns,NULL) ;
+    return numColumns ;

 }
 
 }
 

-wxString wxChoice::GetStringSelection () const
+void wxChoice::SetFocus()

 {
 {

-    int sel = GetSelection ();
-    if (sel > -1)
-        return wxString(this->GetString (sel));
-    else
-        return wxString("");
+    XmProcessTraversal(XtParent((Widget)m_mainWidget), XmTRAVERSE_CURRENT);

 }
 
 }
 

-bool wxChoice::SetStringSelection (const wxString& s)
+void wxChoice::DoSetSize(int x, int y, int width, int height, int sizeFlags)

 {
 {

-    int sel = FindString (s);
-    if (sel > -1)
-        {
-            SetSelection (sel);
-            return TRUE;
-        }
-    else
-        return FALSE;
+    XtVaSetValues((Widget) m_formWidget, XmNresizePolicy, XmRESIZE_ANY, NULL);
+    bool managed = XtIsManaged((Widget) m_formWidget);
+
+    if (managed)
+        XtUnmanageChild ((Widget) m_formWidget);
+
+    int actualWidth = width - WIDTH_OVERHEAD_SUBTRACT,
+        actualHeight = height - HEIGHT_OVERHEAD;
+
+    if (width > -1)
+    {
+        unsigned int i;
+        for (i = 0; i < m_noStrings; i++)
+            XtVaSetValues ((Widget) m_widgetArray[i],
+                           XmNwidth, actualWidth,
+                           NULL);
+        XtVaSetValues ((Widget) m_buttonWidget, XmNwidth, actualWidth,
+            NULL);
+    }
+    if (height > -1)
+    {
+#if 0
+        unsigned int i;
+        for (i = 0; i < m_noStrings; i++)
+            XtVaSetValues ((Widget) m_widgetArray[i],
+                           XmNheight, actualHeight,
+                           NULL);
+#endif
+        XtVaSetValues ((Widget) m_buttonWidget, XmNheight, actualHeight,
+            NULL);
+    }
+
+    if (managed)
+        XtManageChild ((Widget) m_formWidget);
+    XtVaSetValues((Widget) m_formWidget, XmNresizePolicy, XmRESIZE_NONE, NULL);
+
+    wxControl::DoSetSize (x, y, width, height, sizeFlags);

 }
 
 void wxChoice::Command(wxCommandEvent & event)
 }
 
 void wxChoice::Command(wxCommandEvent & event)


@@ -117,3 +421,139 @@ void wxChoice::Command(wxCommandEvent & event)
     ProcessCommand (event);
 }
 
     ProcessCommand (event);
 }
 

+void wxChoiceCallback (Widget w, XtPointer clientData, XtPointer WXUNUSED(ptr))
+{
+    wxChoice *item = (wxChoice *) clientData;
+    if (item)
+    {
+        if (item->InSetValue())
+            return;
+
+        int n = item->GetWidgets().Index(w);
+        if (n != wxNOT_FOUND)
+        {
+            wxCommandEvent event(wxEVT_COMMAND_CHOICE_SELECTED, item->GetId());
+            event.SetEventObject(item);
+            event.SetInt(n);
+            event.SetString( item->GetStrings().Item(n)->GetData() );
+            if ( item->HasClientObjectData() )
+                event.SetClientObject( item->GetClientObject(n) );
+            else if ( item->HasClientUntypedData() )
+                event.SetClientData( item->GetClientData(n) );
+            item->ProcessCommand (event);
+        }
+    }
+}
+
+void wxChoice::ChangeFont(bool keepOriginalSize)
+{
+    // Note that this causes the widget to be resized back
+    // to its original size! We therefore have to set the size
+    // back again. TODO: a better way in Motif?
+    if (m_font.Ok())
+    {
+        Display* dpy = XtDisplay((Widget) m_mainWidget);
+        int width, height, width1, height1;
+        GetSize(& width, & height);
+
+        WXString fontTag = wxFont::GetFontTag();
+
+        XtVaSetValues ((Widget) m_formWidget,
+                       fontTag, m_font.GetFontTypeC(dpy),
+                       NULL);
+        XtVaSetValues ((Widget) m_buttonWidget,
+                       fontTag, m_font.GetFontTypeC(dpy),
+                       NULL);
+
+        for( unsigned int i = 0; i < m_noStrings; ++i )
+            XtVaSetValues( (Widget)m_widgetArray[i],
+                           fontTag, m_font.GetFontTypeC(dpy),
+                           NULL );
+
+        GetSize(& width1, & height1);
+        if (keepOriginalSize && (width != width1 || height != height1))
+        {
+            SetSize(wxDefaultCoord, wxDefaultCoord, width, height);
+        }
+    }
+}
+
+void wxChoice::ChangeBackgroundColour()
+{
+    wxDoChangeBackgroundColour(m_formWidget, m_backgroundColour);
+    wxDoChangeBackgroundColour(m_buttonWidget, m_backgroundColour);
+    wxDoChangeBackgroundColour(m_menuWidget, m_backgroundColour);
+    unsigned int i;
+    for (i = 0; i < m_noStrings; i++)
+        wxDoChangeBackgroundColour(m_widgetArray[i], m_backgroundColour);
+}
+
+void wxChoice::ChangeForegroundColour()
+{
+    wxDoChangeForegroundColour(m_formWidget, m_foregroundColour);
+    wxDoChangeForegroundColour(m_buttonWidget, m_foregroundColour);
+    wxDoChangeForegroundColour(m_menuWidget, m_foregroundColour);
+    unsigned int i;
+    for (i = 0; i < m_noStrings; i++)
+        wxDoChangeForegroundColour(m_widgetArray[i], m_foregroundColour);
+}
+
+unsigned int wxChoice::GetCount() const
+{
+    return m_noStrings;
+}
+
+void wxChoice::DoSetItemClientData(unsigned int n, void* clientData)
+{
+    m_clientDataDict.Set(n, (wxClientData*)clientData, false);
+}
+
+void* wxChoice::DoGetItemClientData(unsigned int n) const
+{
+    return (void*)m_clientDataDict.Get(n);
+}
+
+void wxChoice::DoSetItemClientObject(unsigned int n, wxClientData* clientData)
+{
+    // don't delete, wxItemContainer does that for us
+    m_clientDataDict.Set(n, clientData, false);
+}
+
+wxClientData* wxChoice::DoGetItemClientObject(unsigned int n) const
+{
+    return m_clientDataDict.Get(n);
+}
+
+void wxChoice::SetString(unsigned int WXUNUSED(n), const wxString& WXUNUSED(s))
+{
+    wxFAIL_MSG( wxT("wxChoice::SetString not implemented") );
+}
+
+wxSize wxChoice::GetItemsSize() const
+{
+    int x, y, mx = 0, my = 0;
+
+    // get my
+    GetTextExtent( "|", &x, &my );
+
+    wxStringList::compatibility_iterator curr = m_stringList.GetFirst();
+    while( curr )
+    {
+        GetTextExtent( curr->GetData(), &x, &y );
+        mx = wxMax( mx, x );
+        my = wxMax( my, y );
+        curr = curr->GetNext();
+    }
+
+    return wxSize( mx, my );
+}
+
+wxSize wxChoice::DoGetBestSize() const
+{
+    wxSize items = GetItemsSize();
+    // FIXME arbitrary constants
+    return wxSize( ( items.x ? items.x + WIDTH_OVERHEAD : 120 ),
+                     items.y + HEIGHT_OVERHEAD );
+}
+
+#endif // wxUSE_CHOICE