Don't create a bitmap with dimensions <= 0...

[wxWidgets.git] / src / os2 / button.cpp

diff --git a/src/os2/button.cpp b/src/os2/button.cpp
index 54fba624567d764a147a659aa247443ee8d80c21..cecadf63eed7905f6d846c068c84aadda6b33b03 100644 (file)
--- a/src/os2/button.cpp
+++ b/src/os2/button.cpp
@@ -1,34 +1,44 @@
 /////////////////////////////////////////////////////////////////////////////
 // Name:        button.cpp
 // Purpose:     wxButton
-// Author:      AUTHOR
+// Author:      David Webster
 // Modified by:
-// Created:     ??/??/98
+// Created:     10/13/99
 // RCS-ID:      $Id$
-// Copyright:   (c) AUTHOR
-// Licence:    wxWindows licence
+// Copyright:   (c) David Webster
+// Licence:     wxWindows licence
 /////////////////////////////////////////////////////////////////////////////
 
-#ifdef __GNUG__
-#pragma implementation "button.h"
+// For compilers that support precompilation, includes "wx.h".
+#include "wx/wxprec.h"
+
+#ifndef WX_PRECOMP
+    #include "wx/button.h"
+    #include "wx/brush.h"
+    #include "wx/panel.h"
+    #include "wx/bmpbuttn.h"
+    #include "wx/settings.h"
+    #include "wx/dcscreen.h"
 #endif
 
-#include "wx/button.h"
+#include "wx/os2/private.h"
 
-#if !USE_SHARED_LIBRARY
 IMPLEMENT_DYNAMIC_CLASS(wxButton, wxControl)
-#endif
 
 // Button
 
 bool wxButton::Create(wxWindow *parent, wxWindowID id, const wxString& label,
            const wxPoint& pos,
            const wxSize& size, long style,
+#if wxUSE_VALIDATORS
            const wxValidator& validator,
+#endif
            const wxString& name)
 {
     SetName(name);
+#if wxUSE_VALIDATORS
     SetValidator(validator);
+#endif
     m_windowStyle = style;
 
     parent->AddChild((wxButton *)this);
@@ -43,9 +53,81 @@ bool wxButton::Create(wxWindow *parent, wxWindowID id, const wxString& label,
     return FALSE;
 }
 
-void wxButton::SetSize(int x, int y, int width, int height, int sizeFlags)
+wxButton::~wxButton()
 {
-    // TODO
+    wxPanel *panel = wxDynamicCast(GetParent(), wxPanel);
+    if ( panel )
+    {
+        if ( panel->GetDefaultItem() == this )
+        {
+            // don't leave the panel with invalid default item
+            panel->SetDefaultItem(NULL);
+        }
+    }
+}
+
+// ----------------------------------------------------------------------------
+// size management including autosizing
+// ----------------------------------------------------------------------------
+
+wxSize wxButton::DoGetBestSize() const
+{
+    wxString label = wxGetWindowText(GetHWND());
+    int wBtn;
+    GetTextExtent(label, &wBtn, NULL);
+
+    int wChar, hChar;
+    wxGetCharSize(GetHWND(), &wChar, &hChar, (wxFont*)&GetFont());
+
+    // add a margin - the button is wider than just its label
+    wBtn += 3*wChar;
+
+    // the button height is proportional to the height of the font used
+    int hBtn = 0;// TODO: BUTTON_HEIGHT_FROM_CHAR_HEIGHT(hChar);
+
+    return wxSize(wBtn, hBtn);
+}
+
+/* static */
+wxSize wxButton::GetDefaultSize()
+{
+    static wxSize s_sizeBtn;
+
+    if ( s_sizeBtn.x == 0 )
+    {
+        wxScreenDC dc;
+        dc.SetFont(wxSystemSettings::GetSystemFont(wxSYS_DEFAULT_GUI_FONT));
+
+        // the size of a standard button in the dialog units is 50x14,
+        // translate this to pixels
+        // NB1: the multipliers come from the Windows convention
+        // NB2: the extra +1/+2 were needed to get the size be the same as the
+        //      size of the buttons in the standard dialog - I don't know how
+        //      this happens, but on my system this size is 75x23 in pixels and
+        //      23*8 isn't even divisible by 14... Would be nice to understand
+        //      why these constants are needed though!
+        s_sizeBtn.x = (50 * (dc.GetCharWidth() + 1))/4;
+        s_sizeBtn.y = ((14 * dc.GetCharHeight()) + 2)/8;
+    }
+
+    return s_sizeBtn;
+}
+
+void wxButton::Command (wxCommandEvent & event)
+{
+    ProcessCommand (event);
+}
+
+// ----------------------------------------------------------------------------
+// helpers
+// ----------------------------------------------------------------------------
+
+bool wxButton::SendClickEvent()
+{
+    wxCommandEvent event(wxEVT_COMMAND_BUTTON_CLICKED, GetId());
+    event.SetEventObject(this);
+
+    return ProcessCommand(event);
 }
 
 void wxButton::SetDefault()
@@ -59,19 +141,36 @@ void wxButton::SetDefault()
     // TODO: make button the default
 }
 
-wxString wxButton::GetLabel() const
-{
-    // TODO
-    return wxString("");
-}
+// ----------------------------------------------------------------------------
+// event/message handlers
+// ----------------------------------------------------------------------------
 
-void wxButton::SetLabel(const wxString& label)
+bool wxButton::OS2Command(WXUINT param, WXWORD id)
 {
+    bool processed = FALSE;
     // TODO
+    /*
+    switch ( param )
+    {
+        case 1:                                             // 1 for accelerator
+        case BN_CLICKED:
+            processed = SendClickEvent();
+            break;
+    }
+    */
+    return processed;
 }
 
-void wxButton::Command (wxCommandEvent & event)
+WXHBRUSH wxButton::OnCtlColor(WXHDC pDC,
+                              WXHWND pWnd,
+                              WXUINT nCtlColor,
+                              WXUINT message,
+                              WXWPARAM wParam,
+                              WXLPARAM lParam)
 {
-    ProcessCommand (event);
+  wxBrush *backgroundBrush = wxTheBrushList->FindOrCreateBrush(GetBackgroundColour(), wxSOLID);
+
+  return (WXHBRUSH) backgroundBrush->GetResourceHandle();
 }
 
+