Update on Client Size determinations

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

diff --git a/src/os2/dcclient.cpp b/src/os2/dcclient.cpp
index 6a17297ce5279f88be887294da67cd60d17295fd..2ee419bd585e6b22f3f266e500b9bd08c186edcf 100644 (file)
--- a/src/os2/dcclient.cpp
+++ b/src/os2/dcclient.cpp
@@ -1,11 +1,11 @@
 /////////////////////////////////////////////////////////////////////////////
 // Name:        dcclient.cpp
 // Purpose:     wxClientDC class
 /////////////////////////////////////////////////////////////////////////////
 // Name:        dcclient.cpp
 // Purpose:     wxClientDC class

-// Author:      Julian Smart
+// Author:      David Webster

 // Modified by:
 // Modified by:

-// Created:     01/02/97
+// Created:     09/21/99

 // RCS-ID:      $Id$
 // RCS-ID:      $Id$

-// Copyright:   (c) Julian Smart and Markus Holzem
+// Copyright:   (c) David Webster

 // Licence:     wxWindows licence
 /////////////////////////////////////////////////////////////////////////////
 
 // Licence:     wxWindows licence
 /////////////////////////////////////////////////////////////////////////////
 


@@ -17,20 +17,13 @@
 // headers
 // ----------------------------------------------------------------------------
 
 // headers
 // ----------------------------------------------------------------------------
 

-#ifdef __GNUG__
-    #pragma implementation "dcclient.h"
-#endif
-

 // For compilers that support precompilation, includes "wx.h".
 #include "wx/wxprec.h"
 
 // For compilers that support precompilation, includes "wx.h".
 #include "wx/wxprec.h"
 

-#ifdef __BORLANDC__
-    #pragma hdrstop
-#endif
-

 #include "wx/string.h"
 #include "wx/log.h"
 #include "wx/window.h"
 #include "wx/string.h"
 #include "wx/log.h"
 #include "wx/window.h"

+#include "wx/app.h"

 
 #include "wx/os2/private.h"
 
 
 #include "wx/os2/private.h"
 


@@ -42,17 +35,19 @@
 
 struct WXDLLEXPORT wxPaintDCInfo
 {
 
 struct WXDLLEXPORT wxPaintDCInfo
 {

-    wxPaintDCInfo(wxWindow *win, wxDC *dc)
+    wxPaintDCInfo( wxWindow* pWin
+                  ,wxDC*     pDC
+                 )

     {
     {

-        hwnd = win->GetHWND();
-        hdc = dc->GetHDC();
-        count = 1;
+        m_hWnd = pWin->GetHWND();
+        m_hDC = pDC->GetHDC();
+        m_nCount = 1;

     }
 
     }
 

-    WXHWND    hwnd;       // window for this DC
-    WXHDC     hdc;        // the DC handle
-    size_t    count;      // usage count
-};
+    WXHWND                          m_hWnd;   // window for this DC
+    WXHDC                           m_hDC;    // the DC handle
+    size_t                          m_nCount; // usage count
+}; // end of wxPaintDCInfot

 
 #include "wx/arrimpl.cpp"
 
 
 #include "wx/arrimpl.cpp"
 


@@ -62,11 +57,9 @@ WX_DEFINE_OBJARRAY(wxArrayDCInfo);
 // macros
 // ----------------------------------------------------------------------------
 
 // macros
 // ----------------------------------------------------------------------------
 

-#if !USE_SHARED_LIBRARY

     IMPLEMENT_DYNAMIC_CLASS(wxWindowDC, wxDC)
     IMPLEMENT_DYNAMIC_CLASS(wxClientDC, wxWindowDC)
     IMPLEMENT_DYNAMIC_CLASS(wxPaintDC, wxWindowDC)
     IMPLEMENT_DYNAMIC_CLASS(wxWindowDC, wxDC)
     IMPLEMENT_DYNAMIC_CLASS(wxClientDC, wxWindowDC)
     IMPLEMENT_DYNAMIC_CLASS(wxPaintDC, wxWindowDC)

-#endif

 
 // ----------------------------------------------------------------------------
 // global variables
 
 // ----------------------------------------------------------------------------
 // global variables


@@ -92,49 +85,74 @@ static RECT        g_paintStruct;
 
 wxWindowDC::wxWindowDC()
 {
 
 wxWindowDC::wxWindowDC()
 {

-  m_canvas = NULL;
+    m_pCanvas = NULL;

 }
 
 }
 

-wxWindowDC::wxWindowDC(wxWindow *the_canvas)
+wxWindowDC::wxWindowDC(
+  wxWindow*                         pTheCanvas
+)

 {
 {

-  m_canvas = the_canvas;
-  m_hDC = (WXHDC) ::WinOpenWindowDC(GetWinHwnd(the_canvas) );
-  m_hDCCount++;
-  //
-  // default under PM is that Window and Client DC's are the same
-  // so we offer a separate Presentation Space to use for the
-  // entire window.  Otherwise, calling BeginPaint will just create
-  // chached-micro client presentation space
-  //
-   m_hPS = GpiCreatePS( m_hab
-                       ,m_hDC
-                       ,&m_PageSize
-                       ,PU_PELS | GPIF_LONG | GPIA_ASSOC
-                      );
-  ::GpiAssociate(m_hPS, NULLHANDLE);
-  ::GpiAssociate(m_hPS, m_hDC);
-  SetBackground(wxBrush(m_canvas->GetBackgroundColour(), wxSOLID));
-}
+    ERRORID                         vError;
+    wxString                        sError;

 
 

-wxWindowDC::~wxWindowDC()
-{
-  if (m_canvas && m_hDC)
-  {
-    SelectOldObjects(m_hDC);
+    m_pCanvas = pTheCanvas;
+    m_hDC = (WXHDC) ::WinOpenWindowDC(GetWinHwnd(pTheCanvas) );

 
     //
 
     //

-    // In PM one does not explicitly close or release an open WindowDC
-    // They automatically close with the window, unless explicitly detached
-    // but we need to destroy our PS
+    // default under PM is that Window and Client DC's are the same
+    // so we offer a separate Presentation Space to use for the
+    // entire window.  Otherwise, calling BeginPaint will just create
+    // chached-micro client presentation space

     //
     //

+     m_hPS = ::GpiCreatePS( vHabmain
+                           ,m_hDC
+                           ,&m_PageSize
+                           ,PU_PELS | GPIF_LONG | GPIA_ASSOC
+                          );

     ::GpiAssociate(m_hPS, NULLHANDLE);
     ::GpiAssociate(m_hPS, NULLHANDLE);

-    ::GpiDestroyPS(m_hPS);
-    m_hPS = NULLHANDLE;
-    m_hDC = NULLHANDLE;
-  }
+    ::GpiAssociate(m_hPS, m_hDC);

 
 

-  m_hDCCount--;
-}
+    //
+    // Set the wxWindows color table
+    //
+    if (!::GpiCreateLogColorTable( m_hPS
+                                  ,0L
+                                  ,LCOLF_CONSECRGB
+                                  ,0L
+                                  ,(LONG)wxTheColourDatabase->m_nSize
+                                  ,(PLONG)wxTheColourDatabase->m_palTable
+                                 ))
+    {
+        vError = ::WinGetLastError(vHabmain);
+        sError = wxPMErrorToStr(vError);
+        wxLogError("Unable to set current color table. Error: %s\n", sError);
+    }
+    ::GpiCreateLogColorTable( m_hPS
+                             ,0L
+                             ,LCOLF_RGB
+                             ,0L
+                             ,0L
+                             ,NULL
+                            );
+    ::WinQueryWindowRect( GetWinHwnd(m_pCanvas)
+                         ,&m_vRclPaint
+                        );
+    InitDC();
+} // end of wxWindowDC::wxWindowDC
+
+void wxWindowDC::InitDC()
+{
+    //
+    // The background mode is only used for text background and is set in
+    // DrawText() to OPAQUE as required, otherwise always TRANSPARENT,
+    //
+    ::GpiSetBackMix(GetHPS(), BM_LEAVEALONE);
+
+    //
+    // Default bg colour is pne of the window
+    //
+    SetBackground(wxBrush(m_pCanvas->GetBackgroundColour(), wxSOLID));
+} // end of wxWindowDC::InitDC

 
 // ----------------------------------------------------------------------------
 // wxClientDC
 
 // ----------------------------------------------------------------------------
 // wxClientDC


@@ -142,94 +160,135 @@ wxWindowDC::~wxWindowDC()
 
 wxClientDC::wxClientDC()
 {
 
 wxClientDC::wxClientDC()
 {

-  m_canvas = NULL;
-}
-
-wxClientDC::wxClientDC(wxWindow *the_canvas)
-{
-  m_canvas = the_canvas;
-
-  //
-  // default under PM is that Window and Client DC's are the same
-  //
-  m_hDC = (WXHDC) ::WinOpenWindowDC(GetWinHwnd(the_canvas));
-
-  //
-  // Default mode is BM_LEAVEALONE so we make no call Set the mix
-  //
-  SetBackground(wxBrush(m_canvas->GetBackgroundColour(), wxSOLID));
+    m_pCanvas = NULL;

 }
 
 }
 

-wxClientDC::~wxClientDC()
+wxClientDC::wxClientDC(
+  wxWindow*                         pTheCanvas
+)

 {
 {

-  if ( m_canvas && GetHdc() )
-  {
-    SelectOldObjects(m_hDC);
+    SIZEL                           vSizl = { 0,0};
+    ERRORID                         vError;
+    wxString                        sError;

 
 

-    // We don't explicitly release Device contexts in PM and
-    // the cached micro PS is already gone
+    m_pCanvas = pTheCanvas;

 
 

-    m_hDC = 0;
-  }
-}
+    //
+    // default under PM is that Window and Client DC's are the same
+    //
+    m_hDC = (WXHDC) ::WinOpenWindowDC(GetWinHwnd(pTheCanvas));
+    m_hPS = ::GpiCreatePS( wxGetInstance()
+                          ,m_hDC
+                          ,&vSizl
+                          ,PU_PELS | GPIF_LONG | GPIA_ASSOC
+                         );
+
+    // Set the wxWindows color table
+    if (!::GpiCreateLogColorTable( m_hPS
+                                  ,0L
+                                  ,LCOLF_CONSECRGB
+                                  ,0L
+                                  ,(LONG)wxTheColourDatabase->m_nSize
+                                  ,(PLONG)wxTheColourDatabase->m_palTable
+                                 ))
+    {
+        vError = ::WinGetLastError(vHabmain);
+        sError = wxPMErrorToStr(vError);
+        wxLogError("Unable to set current color table. Error: %s\n", sError);
+    }
+    ::GpiCreateLogColorTable( m_hPS
+                             ,0L
+                             ,LCOLF_RGB
+                             ,0L
+                             ,0L
+                             ,NULL
+                            );
+    //
+    // Set the DC/PS rectangle
+    //
+    ::WinQueryWindowRect( GetWinHwnd(m_pCanvas)
+                         ,&m_vRclPaint
+                        );
+    InitDC();
+} // end of wxClientDC::wxClientDC

 
 // ----------------------------------------------------------------------------
 // wxPaintDC
 // ----------------------------------------------------------------------------
 
 
 // ----------------------------------------------------------------------------
 // wxPaintDC
 // ----------------------------------------------------------------------------
 

-// VZ: initial implementation (by JACS) only remembered the last wxPaintDC
-//     created and tried to reuse - this was supposed to take care of a
-//     situation when a derived class OnPaint() calls base class OnPaint()
-//     because in this case ::BeginPaint() shouldn't be called second time.
-//
-//     I'm not sure how useful this is, however we must remember the HWND
-//     associated with the last HDC as well - otherwise we may (and will!) try
-//     to reuse the HDC for another HWND which is a nice recipe for disaster.
-//
-//     So we store a list of windows for which we already have the DC and not
-//     just one single hDC. This seems to work, but I'm really not sure about
-//     the usefullness of the whole idea - IMHO it's much better to not call
-//     base class OnPaint() at all, or, if we really want to allow it, add a
-//     "wxPaintDC *" parameter to wxPaintEvent which should be used if it's
-//     !NULL instead of creating a new DC.
-

 wxArrayDCInfo wxPaintDC::ms_cache;
 
 wxPaintDC::wxPaintDC()
 {
 wxArrayDCInfo wxPaintDC::ms_cache;
 
 wxPaintDC::wxPaintDC()
 {

-    m_canvas = NULL;
+    m_pCanvas = NULL;

     m_hDC = 0;
 }
 
     m_hDC = 0;
 }
 

-wxPaintDC::wxPaintDC(wxWindow *canvas)
+wxPaintDC::wxPaintDC(
+  wxWindow*                         pCanvas
+)

 {
 {

-    wxCHECK_RET( canvas, _T("NULL canvas in wxPaintDC ctor") );
+    wxCHECK_RET(pCanvas, wxT("NULL canvas in wxPaintDC ctor"));

 
 #ifdef __WXDEBUG__
 
 #ifdef __WXDEBUG__

-    if ( g_isPainting <= 0 )
+    if (g_isPainting <= 0)

     {
     {

-        wxFAIL_MSG( _T("wxPaintDC may be created only in EVT_PAINT handler!") );
-
+        wxFAIL_MSG( wxT("wxPaintDC may be created only in EVT_PAINT handler!") );

         return;
     }
 #endif // __WXDEBUG__
 
         return;
     }
 #endif // __WXDEBUG__
 

-    m_canvas = canvas;
+    m_pCanvas = pCanvas;

 
 

-    // do we have a DC for this window in the cache?
-    wxPaintDCInfo *info = FindInCache();
-    if ( info )
+    //
+    // Do we have a DC for this window in the cache?
+    //
+    wxPaintDCInfo*                  pInfo = FindInCache();
+
+    if (pInfo)

     {
     {

-        m_hDC = info->hdc;
-        info->count++;
+        m_hDC = pInfo->m_hDC;
+        pInfo->m_nCount++;

     }
     else // not in cache, create a new one
     {
     }
     else // not in cache, create a new one
     {

-        m_hDC = (WXHDC)::WinBeginPaint(GetWinHwnd(m_canvas), NULLHANDLE, &g_paintStruct);
-        ms_cache.Add(new wxPaintDCInfo(m_canvas, this));
+        HPS                         hPS;
+
+        hPS = ::WinBeginPaint( GetWinHwnd(m_pCanvas)
+                              ,NULLHANDLE
+                              ,&g_paintStruct
+                             );
+        if(hPS)
+        {
+            m_hOldPS = m_hPS;
+            m_hPS = hPS;
+            ::GpiCreateLogColorTable( m_hPS
+                                     ,0L
+                                     ,LCOLF_CONSECRGB
+                                     ,0L
+                                     ,(LONG)wxTheColourDatabase->m_nSize
+                                     ,(PLONG)wxTheColourDatabase->m_palTable
+                                    );
+            ::GpiCreateLogColorTable( m_hPS
+                                     ,0L
+                                     ,LCOLF_RGB
+                                     ,0L
+                                     ,0L
+                                     ,NULL
+                                    );
+
+            ::WinFillRect(hPS, &g_paintStruct,  m_pCanvas->GetBackgroundColour().GetPixel());
+            ::WinQueryWindowRect( GetWinHwnd(m_pCanvas)
+                                 ,&m_vRclPaint
+                                );
+        }
+
+        m_bIsPaintTime   = TRUE;
+        m_hDC = (WXHDC) -1; // to satisfy those anonizmous efforts
+        ms_cache.Add(new wxPaintDCInfo(m_pCanvas, this));

     }
     }

-    SetBackground(wxBrush(m_canvas->GetBackgroundColour(), wxSOLID));
-}
+    InitDC();
+} // end of wxPaintDC::wxPaintDC

 
 wxPaintDC::~wxPaintDC()
 {
 
 wxPaintDC::~wxPaintDC()
 {


@@ -237,16 +296,17 @@ wxPaintDC::~wxPaintDC()
     {
         SelectOldObjects(m_hDC);
 
     {
         SelectOldObjects(m_hDC);
 

-        size_t index;
-        wxPaintDCInfo *info = FindInCache(&index);
+        size_t                      nIndex;
+        wxPaintDCInfo*              pInfo = FindInCache(&nIndex);

 
 

-        wxCHECK_RET( info, _T("existing DC should have a cache entry") );
+        wxCHECK_RET( pInfo, wxT("existing DC should have a cache entry") );

 
 

-        if ( !--info->count )
+        if ( !--pInfo->m_nCount )

         {
             ::WinEndPaint(m_hPS);
         {
             ::WinEndPaint(m_hPS);

-
-            ms_cache.Remove(index);
+            m_hPS          = m_hOldPS;
+            m_bIsPaintTime = FALSE;
+            ms_cache.Remove(nIndex);

         }
         //else: cached DC entry is still in use
 
         }
         //else: cached DC entry is still in use
 


@@ -255,20 +315,42 @@ wxPaintDC::~wxPaintDC()
     }
 }
 
     }
 }
 

-wxPaintDCInfo *wxPaintDC::FindInCache(size_t *index) const
+wxPaintDCInfo* wxPaintDC::FindInCache(
+  size_t*                           pIndex
+) const

 {
 {

-    wxPaintDCInfo *info = NULL;
-    size_t nCache = ms_cache.GetCount();
-    for ( size_t n = 0; n < nCache; n++ )
+    wxPaintDCInfo*                  pInfo = NULL;
+    size_t                          nCache = ms_cache.GetCount();
+
+    for (size_t n = 0; n < nCache; n++)

     {
     {

-        info = &ms_cache[n];
-        if ( info->hwnd == m_canvas->GetHWND() )
+        pInfo = &ms_cache[n];
+        if (pInfo->m_hWnd == m_pCanvas->GetHWND())

         {
         {

-            if ( index )
-                *index = n;
+            if (pIndex)
+                *pIndex = n;

             break;
         }
     }
             break;
         }
     }

+    return pInfo;
+} // end of wxPaintDC::FindInCache
+
+// find the entry for this DC in the cache (keyed by the window)
+WXHDC wxPaintDC::FindDCInCache(
+  wxWindow*                         pWin
+)
+{
+    wxPaintDCInfo*                  pInfo = NULL;
+    size_t                          nCache = ms_cache.GetCount();
+
+    for (size_t n = 0; n < nCache; n++)
+    {
+        pInfo = &ms_cache[n];
+        if (pInfo->m_hWnd == pWin->GetHWND())
+        {
+            return pInfo->m_hDC;
+        }
+    }
+    return 0;
+} // end of wxPaintDC::FindInCache

 
 

-    return info;
-}