detect horizontal overflow in wxHtmlPrintout and warn the user about it

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

diff --git a/src/palmos/dcclient.cpp b/src/palmos/dcclient.cpp
index 643514095a1b08370ef8010fe5505ee1790031db..a3ff792c66b24c55c2f3e4668a817ab4359af767 100644 (file)
--- a/src/palmos/dcclient.cpp
+++ b/src/palmos/dcclient.cpp
@@ -17,10 +17,6 @@
 // headers
 // ----------------------------------------------------------------------------
 
 // headers
 // ----------------------------------------------------------------------------
 

-#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
-    #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"
 


@@ -28,11 +24,14 @@
     #pragma hdrstop
 #endif
 
     #pragma hdrstop
 #endif
 

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

 #include "wx/dcclient.h"
 #include "wx/dcclient.h"

+#include "wx/palmos/dcclient.h"
+
+#ifndef WX_PRECOMP
+    #include "wx/string.h"
+    #include "wx/log.h"
+    #include "wx/window.h"
+#endif

 
 // ----------------------------------------------------------------------------
 // array/list types
 
 // ----------------------------------------------------------------------------
 // array/list types


@@ -40,124 +39,230 @@
 
 struct WXDLLEXPORT wxPaintDCInfo
 {
 
 struct WXDLLEXPORT wxPaintDCInfo
 {

-    wxPaintDCInfo(wxWindow *win, wxDC *dc)
+    wxPaintDCInfo(wxWindow *win, wxPaintDCImpl *dc)

     {
     {

-        handle = win->GetWinHandle();
-        hdc    = dc->GetHDC();
-        count  = 1;
+        hwnd = win->GetHWND();
+        hdc = dc->GetHDC();
+        count = 1;

     }
 
     }
 

-    WXWINHANDLE handle;       // window for this DC
-    WXHDC       hdc;        // the DC handle
-    size_t     count;      // usage count
+    WXHWND    hwnd;       // window for this DC
+    WXHDC     hdc;        // the DC handle
+    size_t    count;      // usage count

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

-WX_DEFINE_OBJARRAY(wxArrayDCInfo);
-
-// ----------------------------------------------------------------------------
-// macros
-// ----------------------------------------------------------------------------
-
-IMPLEMENT_DYNAMIC_CLASS(wxWindowDC, wxDC)
-IMPLEMENT_DYNAMIC_CLASS(wxClientDC, wxWindowDC)
-IMPLEMENT_DYNAMIC_CLASS(wxPaintDC, wxClientDC)
-IMPLEMENT_CLASS(wxPaintDCEx, wxPaintDC)
-
-// ----------------------------------------------------------------------------
-// global variables
-// ----------------------------------------------------------------------------
-
-#ifdef __WXDEBUG__
-    int g_isPainting = 0;
-#endif // __WXDEBUG__
+WX_DEFINE_OBJARRAY(wxArrayDCInfo)

 
 // ===========================================================================
 // implementation
 // ===========================================================================
 
 // ----------------------------------------------------------------------------
 
 // ===========================================================================
 // implementation
 // ===========================================================================
 
 // ----------------------------------------------------------------------------

-// wxWindowDC
+// wxWindowDCImpl

 // ----------------------------------------------------------------------------
 
 // ----------------------------------------------------------------------------
 

-wxWindowDC::wxWindowDC()
+IMPLEMENT_ABSTRACT_CLASS(wxWindowDCImpl, wxPalmDCImpl)
+
+wxWindowDCImpl::wxWindowDCImpl( wxDC *owner ) :
+   wxPalmDCImpl( owner )

 {
 }
 
 {
 }
 

-wxWindowDC::wxWindowDC(wxWindow *canvas)
+wxWindowDCImpl::wxWindowDCImpl( wxDC *owner, wxWindow *window ) :
+   wxPalmDCImpl( owner )

 {
 {

+    wxCHECK_RET( window, _T("invalid window in wxWindowDCImpl") );

 }
 
 }
 

-void wxWindowDC::InitDC()
+void wxWindowDCImpl::InitDC()

 {
 {

+
+    // since we are a window dc we need to grab the palette from the window
+#if wxUSE_PALETTE
+    InitializePalette();
+#endif

 }
 
 }
 

-void wxWindowDC::DoGetSize(int *width, int *height) const
+void wxWindowDCImpl::DoGetSize(int *width, int *height) const

 {
 {

+    wxCHECK_RET( m_window, _T("wxWindowDCImpl without a window?") );
+
+    m_window->GetSize(width, height);

 }
 
 // ----------------------------------------------------------------------------
 }
 
 // ----------------------------------------------------------------------------

-// wxClientDC
+// wxClientDCImpl

 // ----------------------------------------------------------------------------
 
 // ----------------------------------------------------------------------------
 

-wxClientDC::wxClientDC()
+IMPLEMENT_ABSTRACT_CLASS(wxClientDCImpl, wxWindowDCImpl)
+
+wxClientDCImpl::wxClientDCImpl( wxDC *owner ) :
+   wxWindowDCImpl( owner )

 {
 }
 
 {
 }
 

-wxClientDC::wxClientDC(wxWindow *canvas)
+wxClientDCImpl::wxClientDCImpl( wxDC *owner, wxWindow *window ) :
+   wxWindowDCImpl( owner )

 {
 }
 
 {
 }
 

-void wxClientDC::InitDC()
+void wxClientDCImpl::InitDC()

 {
 {

+    wxWindowDCImpl::InitDC();
+
+    // in wxUniv build we must manually do some DC adjustments usually
+    // performed by Windows for us
+    //
+    // we also need to take the menu/toolbar manually into account under
+    // Windows CE because they're just another control there, not anything
+    // special as usually under Windows
+#if defined(__WXUNIVERSAL__) || defined(__WXWINCE__)
+    wxPoint ptOrigin = m_window->GetClientAreaOrigin();
+    if ( ptOrigin.x || ptOrigin.y )
+    {
+        // no need to shift DC origin if shift is null
+        SetDeviceOrigin(ptOrigin.x, ptOrigin.y);
+    }
+
+    // clip the DC to avoid overwriting the non client area
+    SetClippingRegion(wxPoint(0,0), m_window->GetClientSize());
+#endif // __WXUNIVERSAL__ || __WXWINCE__

 }
 
 }
 

-wxClientDC::~wxClientDC()
+wxClientDCImpl::~wxClientDCImpl()

 {
 }
 
 {
 }
 

-void wxClientDC::DoGetSize(int *width, int *height) const
+void wxClientDCImpl::DoGetSize(int *width, int *height) const

 {
 {

+    wxCHECK_RET( m_window, _T("wxClientDCImpl without a window?") );
+
+    m_window->GetClientSize(width, height);

 }
 
 // ----------------------------------------------------------------------------
 }
 
 // ----------------------------------------------------------------------------

-// wxPaintDC
+// wxPaintDCImpl

 // ----------------------------------------------------------------------------
 
 // ----------------------------------------------------------------------------
 

-wxArrayDCInfo wxPaintDC::ms_cache;
-
-wxPaintDC::wxPaintDC()
+// VZ: initial implementation (by JACS) only remembered the last wxPaintDC
+//     created and tried to reuse it - 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.
+
+IMPLEMENT_ABSTRACT_CLASS(wxPaintDCImpl, wxClientDCImpl)
+
+wxArrayDCInfo wxPaintDCImpl::ms_cache;
+
+wxPaintDCImpl::wxPaintDCImpl( wxDC *owner ) :
+   wxClientDCImpl( owner )

 {
 }
 
 {
 }
 

-wxPaintDC::wxPaintDC(wxWindow *canvas)
+wxPaintDCImpl::wxPaintDCImpl( wxDC *owner, wxWindow *window ) :
+   wxClientDCImpl( owner )

 {
 {

-}
+    wxCHECK_RET( window, wxT("NULL canvas in wxPaintDCImpl ctor") );

 
 

-wxPaintDC::~wxPaintDC()
-{
-}
+    m_window = window;

 
 

-wxPaintDCInfo *wxPaintDC::FindInCache(size_t *index) const
-{
-    return NULL;
+    // do we have a DC for this window in the cache?
+    wxPaintDCInfo *info = FindInCache();
+    if ( info )
+    {
+        m_hDC = info->hdc;
+        info->count++;
+    }
+    else // not in cache, create a new one
+    {
+        //m_hDC = (WXHDC)::BeginPaint(GetHwndOf(m_window), &g_paintStruct);
+        if (m_hDC)
+            ms_cache.Add(new wxPaintDCInfo(m_window, this));
+    }
+
+    // Note: at this point m_hDC can be NULL under MicroWindows, when dragging.
+    if (!GetHDC())
+        return;
+
+    // (re)set the DC parameters.
+    InitDC();
+
+    // the HDC can have a clipping box (which we didn't set), make sure our
+    // DoGetClippingBox() checks for it
+    m_clipping = true;

 }
 
 }
 

-WXHDC wxPaintDC::FindDCInCache(wxWindow* win)
+wxPaintDCImpl::~wxPaintDCImpl()

 {
 {

-    return 0;
-}
+    if ( m_hDC )
+    {
+        SelectOldObjects(m_hDC);

 
 

-/*
- * wxPaintDCEx
- */
+        size_t index;
+        wxPaintDCInfo *info = FindInCache(&index);

 
 

-wxPaintDCEx::wxPaintDCEx(wxWindow *canvas, WXHDC dc) : saveState(0)
-{
+        wxCHECK_RET( info, wxT("existing DC should have a cache entry") );
+
+        if ( --info->count == 0 )
+        {
+            //::EndPaint(GetHwndOf(m_window), &g_paintStruct);
+
+            ms_cache.RemoveAt(index);
+
+            // Reduce the number of bogus reports of non-freed memory
+            // at app exit
+            if (ms_cache.IsEmpty())
+                ms_cache.Clear();
+        }
+        //else: cached DC entry is still in use
+
+        // prevent the base class dtor from ReleaseDC()ing it again
+        m_hDC = 0;
+    }

 }
 
 }
 

-wxPaintDCEx::~wxPaintDCEx()
+wxPaintDCInfo *wxPaintDCImpl::FindInCache(size_t *index) const

 {
 {

+    wxPaintDCInfo *info = NULL;
+    size_t nCache = ms_cache.GetCount();
+    for ( size_t n = 0; n < nCache; n++ )
+    {
+        wxPaintDCInfo *info1 = &ms_cache[n];
+        if ( info1->hwnd == m_window->GetHWND() )
+        {
+            info = info1;
+            if ( index )
+                *index = n;
+            break;
+        }
+    }
+
+    return info;

 }
 
 }
 

+// find the entry for this DC in the cache (keyed by the window)
+WXHDC wxPaintDCImpl::FindDCInCache(wxWindow* win)
+{
+    size_t nCache = ms_cache.GetCount();
+    for ( size_t n = 0; n < nCache; n++ )
+    {
+        wxPaintDCInfo *info = &ms_cache[n];
+        if ( info->hwnd == win->GetHWND() )
+        {
+            return info->hdc;
+        }
+    }
+    return 0;
+}