]> git.saurik.com Git - wxWidgets.git/blob - src/mgl/dcclient.cpp
fixed a huge memory leak in wxStreamBuffer
[wxWidgets.git] / src / mgl / dcclient.cpp
1 /////////////////////////////////////////////////////////////////////////////
2 // Name: dcclient.cpp
3 // Purpose:
4 // Author: Vaclav Slavik
5 // RCS-ID: $Id$
6 // Copyright: (c) 2001 SciTech Software, Inc. (www.scitechsoft.com)
7 // Licence: wxWindows licence
8 /////////////////////////////////////////////////////////////////////////////
9
10 #ifdef __GNUG__
11 #pragma implementation "dcclient.h"
12 #endif
13
14 // For compilers that support precompilation, includes "wx.h".
15 #include "wx/wxprec.h"
16
17 #ifdef __BORLANDC__
18 #pragma hdrstop
19 #endif
20
21 #ifndef WX_PRECOMP
22 #include "wx/dcclient.h"
23 #include "wx/window.h"
24 #endif
25
26 #include <mgraph.hpp>
27
28 IMPLEMENT_DYNAMIC_CLASS(wxWindowDC, wxDC)
29 IMPLEMENT_DYNAMIC_CLASS(wxClientDC,wxWindowDC)
30 IMPLEMENT_DYNAMIC_CLASS(wxPaintDC, wxClientDC)
31
32 wxWindowDC::wxWindowDC(wxWindow *win) : m_wnd(win)
33 {
34 MGLDevCtx *dc = win->GetPaintMGLDC();
35 if ( dc )
36 {
37 m_inPaintHandler = TRUE;
38
39 m_globalClippingRegion = win->GetUpdateRegion();
40 SetMGLDC(dc, FALSE);
41 }
42 else
43 {
44 m_inPaintHandler = FALSE;
45
46 dc = new MGLDevCtx(MGL_wmBeginPaint(win->GetHandle()));
47
48 MGLRegion clip;
49 dc->getClipRegion(clip);
50 m_globalClippingRegion = wxRegion(clip);
51 SetMGLDC(dc, TRUE);
52 // TRUE means that dtor will delete MGLDevCtx object
53 // but it won't destroy MGLDC returned by MGL_wmBeginPaint because
54 // ~MGLDevCtx() doesn't call destroy()
55 }
56 }
57
58 wxWindowDC::~wxWindowDC()
59 {
60 if ( !m_inPaintHandler )
61 {
62 GetMGLDC()->setDC(NULL);
63 MGL_wmEndPaint(m_wnd->GetHandle());
64 }
65 }
66
67 wxClientDC::wxClientDC(wxWindow *win) : wxWindowDC(win)
68 {
69 wxRect r = m_wnd->GetClientRect();
70 m_globalClippingRegion.Intersect(r);
71 SetDeviceOrigin(r.x, r.y);
72 }