Fix to wxChar* access.

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

diff --git a/src/os2/button.cpp b/src/os2/button.cpp
index 54fba624567d764a147a659aa247443ee8d80c21..cb6894c3e6aa72da55f7444dc13db877bd0214cb 100644 (file)
--- a/src/os2/button.cpp
+++ b/src/os2/button.cpp
@@ -1,77 +1,453 @@
 /////////////////////////////////////////////////////////////////////////////
 // Name:        button.cpp
 // Purpose:     wxButton
 /////////////////////////////////////////////////////////////////////////////
 // Name:        button.cpp
 // Purpose:     wxButton

-// Author:      AUTHOR
+// Author:      David Webster

 // Modified by:
 // Modified by:

-// Created:     ??/??/98
+// Created:     10/13/99

 // RCS-ID:      $Id$
 // 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/app.h"
+    #include "wx/button.h"
+    #include "wx/brush.h"
+    #include "wx/panel.h"
+    #include "wx/bmpbuttn.h"
+    #include "wx/settings.h"
+    #include "wx/dcscreen.h"
+    #include "wx/scrolwin.h"

 #endif
 
 #endif
 

-#include "wx/button.h"
+#include "wx/os2/private.h"

 
 

-#if !USE_SHARED_LIBRARY
-IMPLEMENT_DYNAMIC_CLASS(wxButton, wxControl)
+#define BUTTON_HEIGHT_FROM_CHAR_HEIGHT(cy) (11*EDIT_HEIGHT_FROM_CHAR_HEIGHT(cy)/10)
+
+//
+// Should be at the very least less than winDEFAULT_BUTTON_MARGIN
+//
+#define FOCUS_MARGIN 3
+
+#ifndef BST_CHECKED
+#define BST_CHECKED 0x0001

 #endif
 
 #endif
 

+IMPLEMENT_DYNAMIC_CLASS(wxButton, wxControl)
+

 // Button
 
 // Button
 

-bool wxButton::Create(wxWindow *parent, wxWindowID id, const wxString& label,
-           const wxPoint& pos,
-           const wxSize& size, long style,
-           const wxValidator& validator,
-           const wxString& name)
+bool wxButton::Create(
+  wxWindow*                         pParent
+, wxWindowID                        vId
+, const wxString&                   rsLabel
+, const wxPoint&                    rPos
+, const wxSize&                     rSize
+, long                              lStyle
+, const wxValidator&                rValidator
+, const wxString&                   rsName
+)

 {
 {

-    SetName(name);
-    SetValidator(validator);
-    m_windowStyle = style;

 
 

-    parent->AddChild((wxButton *)this);
+    wxString                        sLabel = ::wxPMTextToLabel(rsLabel);

 
 

-    if (id == -1)
+    SetName(rsName);
+#if wxUSE_VALIDATORS
+    SetValidator(rValidator);
+#endif
+    m_windowStyle = lStyle;
+    pParent->AddChild((wxButton *)this);
+    if (vId == -1)

         m_windowId = NewControlId();
     else
         m_windowId = NewControlId();
     else

-        m_windowId = id;
+        m_windowId = vId;
+    lStyle = WS_VISIBLE | WS_TABSTOP | BS_PUSHBUTTON;
+
+    //
+    // OS/2 PM does not have Right/Left/Top/Bottom styles.
+    // We will have to define an additional style when we implement notebooks
+    // for a notebook page button
+    //
+    if (m_windowStyle & wxCLIP_SIBLINGS )
+        lStyle |= WS_CLIPSIBLINGS;
+
+    m_hWnd = (WXHWND)::WinCreateWindow( GetHwndOf(pParent)   // Parent handle
+                                       ,WC_BUTTON            // A Button class window
+                                       ,(PSZ)sLabel.c_str()  // Button text
+                                       ,lStyle               // Button style
+                                       ,0, 0, 0, 0           // Location and size
+                                       ,GetHwndOf(pParent)   // Owner handle
+                                       ,HWND_TOP             // Top of Z-Order
+                                       ,vId                  // Identifier
+                                       ,NULL                 // No control data
+                                       ,NULL                 // No Presentation parameters
+                                      );
+    if (m_hWnd == 0)
+    {
+        return FALSE;
+    }
+
+    //
+    // Subclass again for purposes of dialog editing mode
+    //
+    SubclassWin(m_hWnd);
+    wxFont*                          pButtonFont = new wxFont( 8
+                                                              ,wxSWISS
+                                                              ,wxNORMAL
+                                                              ,wxNORMAL
+                                                             );
+    SetFont(*pButtonFont);
+    SetXComp(0);
+    SetYComp(0);
+    SetSize( rPos.x
+            ,rPos.y
+            ,rSize.x
+            ,rSize.y
+           );
+    delete pButtonFont;
+    return TRUE;
+} // end of wxButton::Create
+
+wxButton::~wxButton()
+{
+    wxPanel*                        pPanel = wxDynamicCast(GetParent(), wxPanel);
+
+    if (pPanel)
+    {
+        if (pPanel->GetDefaultItem() == this)
+        {
+            //
+            // Don't leave the panel with invalid default item
+            //
+            pPanel->SetDefaultItem(NULL);
+        }
+    }
+} // end of wxButton::~wxButton
+
+// ----------------------------------------------------------------------------
+// size management including autosizing
+// ----------------------------------------------------------------------------
+
+wxSize wxButton::DoGetBestSize() const
+{
+    wxString                        rsLabel = wxGetWindowText(GetHWND());
+    int                             nWidthButton;
+    int                             nWidthChar;
+    int                             nHeightChar;
+
+    GetTextExtent( rsLabel
+                  ,&nWidthButton
+                  ,NULL
+                 );
+
+    wxGetCharSize( GetHWND()
+                  ,&nWidthChar
+                  ,&nHeightChar
+                  ,(wxFont*)&GetFont()
+                 );
+
+    //
+    // Add a margin - the button is wider than just its label
+    //
+    nWidthButton += 3 * nWidthChar;

 
 

-    // TODO: create button
+    //
+    // The button height is proportional to the height of the font used
+    //
+    int                             nHeightButton = BUTTON_HEIGHT_FROM_CHAR_HEIGHT(nHeightChar);

 
 

-    return FALSE;
-}
+    //
+    // Need a little extra to make it look right
+    //
+    nHeightButton += (int)(nHeightChar/1.5);

 
 

-void wxButton::SetSize(int x, int y, int width, int height, int sizeFlags)
+    if (!HasFlag(wxBU_EXACTFIT))
+    {
+        wxSize                      vSize = GetDefaultSize();
+
+        if (nWidthButton > vSize.x)
+            vSize.x = nWidthButton;
+        if (nHeightButton > vSize.y)
+            vSize.y = nHeightButton;
+        return vSize;
+    }
+    return wxSize( nWidthButton
+                  ,nHeightButton
+                 );
+} // end of wxButton::DoGetBestSize
+
+/* static */
+wxSize wxButton::GetDefaultSize()

 {
 {

-    // TODO
-}
+    static wxSize                   vSizeBtn;
+
+    if (vSizeBtn.x == 0)
+    {
+        wxScreenDC                  vDc;
+
+        vDc.SetFont(wxSystemSettings::GetFont(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!
+        vSizeBtn.x = (50 * (vDc.GetCharWidth() + 1))/4;
+        vSizeBtn.y = ((14 * vDc.GetCharHeight()) + 2)/8;
+    }
+    return vSizeBtn;
+} // end of wxButton::GetDefaultSize
+
+void wxButton::Command (
+  wxCommandEvent&                   rEvent
+)
+{
+    ProcessCommand (rEvent);
+} // end of wxButton::Command
+
+// ----------------------------------------------------------------------------
+// helpers
+// ----------------------------------------------------------------------------
+
+bool wxButton::SendClickEvent()
+{
+    wxCommandEvent                  vEvent( wxEVT_COMMAND_BUTTON_CLICKED
+                                           ,GetId()
+                                          );
+
+    vEvent.SetEventObject(this);
+    return ProcessCommand(vEvent);
+} // end of wxButton::SendClickEvent

 
 void wxButton::SetDefault()
 {
 
 void wxButton::SetDefault()
 {

-    wxWindow *parent = GetParent();
-    wxButton *btnOldDefault = NULL;
-    wxPanel *panel = wxDynamicCast(parent, wxPanel);
-    if (panel)
-        panel->SetDefaultItem(this);
+    wxWindow*                       pParent = GetParent();

 
 

-    // TODO: make button the default
-}
+    wxCHECK_RET( pParent, _T("button without parent?") );

 
 

-wxString wxButton::GetLabel() const
+    //
+    // Set this one as the default button both for wxWindows and Windows
+    //
+    wxWindow*                       pWinOldDefault = pParent->SetDefaultItem(this);
+
+    SetDefaultStyle( wxDynamicCast(pWinOldDefault, wxButton)
+                    ,FALSE
+                   );
+    SetDefaultStyle( this
+                    ,TRUE
+                   );
+} // end of wxButton::SetDefault
+
+void wxButton::SetTmpDefault()
+{
+    wxWindow*                       pParent = GetParent();
+
+    wxCHECK_RET( pParent, _T("button without parent?") );
+
+    wxWindow*                       pWinOldDefault = pParent->GetDefaultItem();
+
+    pParent->SetTmpDefaultItem(this);
+    SetDefaultStyle( wxDynamicCast(pWinOldDefault, wxButton)
+                    ,FALSE
+                   );
+    SetDefaultStyle( this
+                    ,TRUE
+                   );
+} // end of wxButton::SetTmpDefault
+
+void wxButton::UnsetTmpDefault()
+{
+    wxWindow*                       pParent = GetParent();
+
+    wxCHECK_RET( pParent, _T("button without parent?") );
+
+    pParent->SetTmpDefaultItem(NULL);
+
+    wxWindow*                       pWinOldDefault = pParent->GetDefaultItem();
+
+    SetDefaultStyle( this
+                    ,FALSE
+                   );
+    SetDefaultStyle( wxDynamicCast(pWinOldDefault, wxButton)
+                    ,TRUE
+                   );
+} // end of wxButton::UnsetTmpDefault
+
+void wxButton::SetDefaultStyle(
+  wxButton*                         pBtn
+, bool                              bOn
+)
+{
+    long                            lStyle;
+    //
+    // We may be called with NULL pointer -- simpler to do the check here than
+    // in the caller which does wxDynamicCast()
+    //
+    if (!pBtn)
+        return;
+
+    //
+    // First, let DefDlgProc() know about the new default button
+    //
+    if (bOn)
+    {
+        if (!wxTheApp->IsActive())
+            return;
+
+        //
+        // In OS/2 the dialog/panel doesn't really know it has a default
+        // button, the default button simply has that style.  We'll just
+        // simulate by setting focus to it
+        //
+        pBtn->SetFocus();
+    }
+    lStyle = ::WinQueryWindowULong(GetHwndOf(pBtn), QWL_STYLE);
+    if (!(lStyle & BS_DEFAULT) == bOn)
+    {
+        if ((lStyle & BS_USERBUTTON) != BS_USERBUTTON)
+        {
+            if (bOn)
+                lStyle |= BS_DEFAULT;
+            else
+                lStyle &= ~BS_DEFAULT;
+            ::WinSetWindowULong(GetHwndOf(pBtn), QWL_STYLE, lStyle);
+        }
+        else
+        {
+            //
+            // Redraw the button - it will notice itself that it's not the
+            // default one any longer
+            //
+            pBtn->Refresh();
+        }
+    }
+} // end of wxButton::UpdateDefaultStyle
+
+// ----------------------------------------------------------------------------
+// event/message handlers
+// ----------------------------------------------------------------------------
+
+bool wxButton::OS2Command(
+  WXUINT                            uParam
+, WXWORD                            wId
+)
+{
+    bool                            bProcessed = FALSE;
+
+    switch (uParam)
+    {
+        case BN_CLICKED:            // normal buttons send this
+        case BN_DBLCLICKED:         // owner-drawn ones also send this
+            bProcessed = SendClickEvent();
+            break;
+    }
+    return bProcessed;
+} // end of wxButton::OS2Command
+
+WXHBRUSH wxButton::OnCtlColor(
+  WXHDC                             pDC
+, WXHWND                            pWnd
+, WXUINT                            nCtlColor
+, WXUINT                            uMessage
+, WXWPARAM                          wParam
+, WXLPARAM                          lParam
+)

 {
 {

-    // TODO
-    return wxString("");
-}
+    wxBrush*                        pBackgroundBrush = wxTheBrushList->FindOrCreateBrush( GetBackgroundColour()
+                                                                                         ,wxSOLID
+                                                                                        );

 
 

-void wxButton::SetLabel(const wxString& label)
+    return (WXHBRUSH)pBackgroundBrush->GetResourceHandle();
+} // end of wxButton::OnCtlColor
+
+void wxButton::MakeOwnerDrawn()

 {
 {

-    // TODO
-}
+    long                            lStyle = 0L;
+
+    lStyle = ::WinQueryWindowULong(GetHwnd(), QWL_STYLE);
+    if ((lStyle & BS_USERBUTTON) != BS_USERBUTTON)
+    {
+        //
+        // Make it so
+        //
+        lStyle |= BS_USERBUTTON;
+        ::WinSetWindowULong(GetHwnd(), QWL_STYLE, lStyle);
+    }
+} // end of wxButton::MakeOwnerDrawn

 
 

-void wxButton::Command (wxCommandEvent & event)
+WXDWORD wxButton::OS2GetStyle(
+  long                              lStyle
+, WXDWORD*                          pdwExstyle
+) const

 {
 {

-    ProcessCommand (event);
-}
+    //
+    // Buttons never have an external border, they draw their own one
+    //
+    WXDWORD                         dwStyle = wxControl::OS2GetStyle( (lStyle & ~wxBORDER_MASK) | wxBORDER_NONE
+                                                                     ,pdwExstyle
+                                                                    );
+
+    //
+    // We must use WS_CLIPSIBLINGS with the buttons or they would draw over
+    // each other in any resizeable dialog which has more than one button in
+    // the bottom
+    //
+    dwStyle |= WS_CLIPSIBLINGS;
+    return dwStyle;
+} // end of wxButton::OS2GetStyle
+
+MRESULT wxButton::WindowProc(
+  WXUINT                            uMsg
+, WXWPARAM                          wParam
+, WXLPARAM                          lParam
+)
+{
+    //
+    // When we receive focus, we want to temporary become the default button in
+    // our parent panel so that pressing "Enter" would activate us -- and when
+    // losing it we should restore the previous default button as well
+    //
+    if (uMsg == WM_SETFOCUS)
+    {
+        if (SHORT1FROMMP(lParam) == TRUE)
+            SetTmpDefault();
+        else
+            UnsetTmpDefault();
+
+        //
+        // Let the default processign take place too
+        //
+    }
+
+    else if (uMsg == WM_BUTTON1DBLCLK)
+    {
+        //
+        // Emulate a click event to force an owner-drawn button to change its
+        // appearance - without this, it won't do it
+        //
+        (void)wxControl::OS2WindowProc( WM_BUTTON1DOWN
+                                       ,wParam
+                                       ,lParam
+                                      );
+
+        //
+        // And conitnue with processing the message normally as well
+        //
+    }
+
+    //
+    // Let the base class do all real processing
+    //
+    return (wxControl::OS2WindowProc( uMsg
+                                     ,wParam
+                                     ,lParam
+                                    ));
+} // end of wxWindowProc