X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/f2506310426546479e9e30a9639f0a8bbf879eb5..33820d94285c0004acce756e7d10d9698e6387d1:/src/msw/dcmemory.cpp

diff --git a/src/msw/dcmemory.cpp b/src/msw/dcmemory.cpp
index f79d33b26e..c84983ad85 100644
--- a/src/msw/dcmemory.cpp
+++ b/src/msw/dcmemory.cpp
@@ -1,11 +1,11 @@
 /////////////////////////////////////////////////////////////////////////////
-// Name:        dcmemory.cpp
+// Name:        src/msw/dcmemory.cpp
 // Purpose:     wxMemoryDC class
 // Author:      Julian Smart
 // Modified by:
 // Created:     01/02/97
 // RCS-ID:      $Id$
-// Copyright:   (c) Julian Smart and Markus Holzem
+// Copyright:   (c) Julian Smart
 // Licence:     wxWindows licence
 /////////////////////////////////////////////////////////////////////////////
 
@@ -17,10 +17,6 @@
 // headers
 // ----------------------------------------------------------------------------
 
-#ifdef __GNUG__
-    #pragma implementation "dcmemory.h"
-#endif
-
 // For compilers that support precompilation, includes "wx.h".
 #include "wx/wxprec.h"
 
@@ -28,6 +24,9 @@
     #pragma hdrstop
 #endif
 
+#include "wx/dcmemory.h"
+#include "wx/msw/dcmemory.h"
+
 #ifndef WX_PRECOMP
     #include "wx/utils.h"
     #include "wx/log.h"
@@ -35,58 +34,71 @@
 
 #include "wx/msw/private.h"
 
-#include "wx/dcmemory.h"
-
 // ----------------------------------------------------------------------------
-// wxWin macros
+// wxMemoryDCImpl
 // ----------------------------------------------------------------------------
 
-    IMPLEMENT_DYNAMIC_CLASS(wxMemoryDC, wxDC)
+IMPLEMENT_ABSTRACT_CLASS(wxMemoryDCImpl, wxMSWDCImpl)
 
-// ============================================================================
-// implementation
-// ============================================================================
+wxMemoryDCImpl::wxMemoryDCImpl( wxMemoryDC *owner )
+        : wxMSWDCImpl( owner )
+{
+    CreateCompatible(NULL);
+    Init();
+}
 
-// ----------------------------------------------------------------------------
-// wxMemoryDC
-// ----------------------------------------------------------------------------
+wxMemoryDCImpl::wxMemoryDCImpl( wxMemoryDC *owner, wxBitmap& bitmap )
+        : wxMSWDCImpl( owner )
+{
+    CreateCompatible(NULL);
+    Init();
+    DoSelect(bitmap);
+}
 
-wxMemoryDC::wxMemoryDC()
+wxMemoryDCImpl::wxMemoryDCImpl( wxMemoryDC *owner, wxDC *dc )
+        : wxMSWDCImpl( owner )
 {
-    m_hDC = (WXHDC) ::CreateCompatibleDC((HDC) NULL);
-    m_ok = (m_hDC != 0);
-    m_bOwnsDC = TRUE;
+    wxCHECK_RET( dc, wxT("NULL dc in wxMemoryDC ctor") );
 
-    SetBrush(*wxWHITE_BRUSH);
-    SetPen(*wxBLACK_PEN);
+    CreateCompatible(dc);
 
-    // the background mode is only used for text background and is set in
-    // DrawText() to OPAQUE as required, otherwise always TRANSPARENT
-    ::SetBkMode( GetHdc(), TRANSPARENT );
+    Init();
 }
 
-wxMemoryDC::wxMemoryDC(wxDC *old_dc)
+void wxMemoryDCImpl::Init()
 {
-    old_dc->BeginDrawing();
+    if ( m_ok )
+    {
+        SetBrush(*wxWHITE_BRUSH);
+        SetPen(*wxBLACK_PEN);
 
-    m_hDC = (WXHDC) ::CreateCompatibleDC(GetHdcOf(*old_dc));
-    m_ok = (m_hDC != 0);
+        // the background mode is only used for text background and is set in
+        // DrawText() to OPAQUE as required, otherwise always TRANSPARENT
+        ::SetBkMode( GetHdc(), TRANSPARENT );
+    }
+}
 
-    old_dc->EndDrawing();
+bool wxMemoryDCImpl::CreateCompatible(wxDC *dc)
+{
+    wxDCImpl *impl = dc ? dc->GetImpl() : NULL ;
+    wxMSWDCImpl *msw_impl = wxDynamicCast( impl, wxMSWDCImpl );
+    if ( dc && !msw_impl)
+    {
+        m_ok = false;
+        return false;
+    }
 
-    SetBrush(*wxWHITE_BRUSH);
-    SetPen(*wxBLACK_PEN);
+    m_hDC = (WXHDC)::CreateCompatibleDC(dc ? GetHdcOf(*msw_impl) : NULL);
 
-    // the background mode is only used for text background and is set in
-    // DrawText() to OPAQUE as required, otherwise always TRANSPARENT
-    ::SetBkMode( GetHdc(), TRANSPARENT );
-}
+    // as we created the DC, we must delete it in the dtor
+    m_bOwnsDC = true;
 
-wxMemoryDC::~wxMemoryDC()
-{
+    m_ok = m_hDC != 0;
+
+    return m_ok;
 }
 
-void wxMemoryDC::SelectObject(const wxBitmap& bitmap)
+void wxMemoryDCImpl::DoSelect( const wxBitmap& bitmap )
 {
     // select old bitmap out of the device context
     if ( m_oldBitmap )
@@ -100,22 +112,21 @@ void wxMemoryDC::SelectObject(const wxBitmap& bitmap)
     }
 
     // check for whether the bitmap is already selected into a device context
-    wxCHECK_RET( !bitmap.GetSelectedInto() ||
-                 (bitmap.GetSelectedInto() == this),
-                 wxT("Bitmap is selected in another wxMemoryDC, delete the "
-                     "first wxMemoryDC or use SelectObject(NULL)") );
+    wxASSERT_MSG( !bitmap.GetSelectedInto() ||
+                  (bitmap.GetSelectedInto() == GetOwner()),
+                  wxT("Bitmap is selected in another wxMemoryDC, delete the first wxMemoryDC or use SelectObject(NULL)") );
 
     m_selectedBitmap = bitmap;
     WXHBITMAP hBmp = m_selectedBitmap.GetHBITMAP();
     if ( !hBmp )
         return;
 
-    m_selectedBitmap.SetSelectedInto(this);
+    m_selectedBitmap.SetSelectedInto(GetOwner());
     hBmp = (WXHBITMAP)::SelectObject(GetHdc(), (HBITMAP)hBmp);
 
     if ( !hBmp )
     {
-        wxLogLastError("SelectObject(memDC, bitmap)");
+        wxLogLastError(wxT("SelectObject(memDC, bitmap)"));
 
         wxFAIL_MSG(wxT("Couldn't select a bitmap into wxMemoryDC"));
     }
@@ -125,7 +136,7 @@ void wxMemoryDC::SelectObject(const wxBitmap& bitmap)
     }
 }
 
-void wxMemoryDC::DoGetSize(int *width, int *height) const
+void wxMemoryDCImpl::DoGetSize(int *width, int *height) const
 {
     if ( m_selectedBitmap.Ok() )
     {
@@ -139,6 +150,13 @@ void wxMemoryDC::DoGetSize(int *width, int *height) const
     }
 }
 
+// the rest of this file deals with drawing rectangles workaround, disabled by
+// default
+
+#define wxUSE_MEMORY_DC_DRAW_RECTANGLE 0
+
+#if wxUSE_MEMORY_DC_DRAW_RECTANGLE
+
 // For some reason, drawing a rectangle on a memory DC has problems.
 // Use this substitute if we can.
 static void wxDrawRectangle(wxDC& dc, wxCoord x, wxCoord y, wxCoord width, wxCoord height)
@@ -167,11 +185,13 @@ static void wxDrawRectangle(wxDC& dc, wxCoord x, wxCoord y, wxCoord width, wxCoo
     }
 }
 
-void wxMemoryDC::DoDrawRectangle(wxCoord x, wxCoord y, wxCoord width, wxCoord height)
+#endif // wxUSE_MEMORY_DC_DRAW_RECTANGLE
+
+void wxMemoryDCImpl::DoDrawRectangle(wxCoord x, wxCoord y, wxCoord width, wxCoord height)
 {
     // Set this to 1 to work around an apparent video driver bug
     // (visible with e.g. 70x70 rectangle on a memory DC; see Drawing sample)
-#if 0
+#if wxUSE_MEMORY_DC_DRAW_RECTANGLE
     if (m_brush.Ok() && m_pen.Ok() &&
         (m_brush.GetStyle() == wxSOLID || m_brush.GetStyle() == wxTRANSPARENT) &&
         (m_pen.GetStyle() == wxSOLID || m_pen.GetStyle() == wxTRANSPARENT) &&
@@ -180,11 +200,8 @@ void wxMemoryDC::DoDrawRectangle(wxCoord x, wxCoord y, wxCoord width, wxCoord he
         wxDrawRectangle(* this, x, y, width, height);
     }
     else
+#endif // wxUSE_MEMORY_DC_DRAW_RECTANGLE
     {
-        wxDC::DoDrawRectangle(x, y, width, height);
+        wxMSWDCImpl::DoDrawRectangle(x, y, width, height);
     }
-#else
-    wxDC::DoDrawRectangle(x, y, width, height);
-#endif
 }
-