+++ /dev/null
-/////////////////////////////////////////////////////////////////////////////
-// Name: src/palmos/dcclient.cpp
-// Purpose: wxClientDC class
-// Author: William Osborne - minimal working wxPalmOS port
-// Modified by:
-// Created: 10/13/04
-// RCS-ID: $Id$
-// Copyright: (c) William Osborne
-// Licence: wxWindows licence
-/////////////////////////////////////////////////////////////////////////////
-
-// ===========================================================================
-// declarations
-// ===========================================================================
-
-// ----------------------------------------------------------------------------
-// headers
-// ----------------------------------------------------------------------------
-
-// For compilers that support precompilation, includes "wx.h".
-#include "wx/wxprec.h"
-
-#ifdef __BORLANDC__
- #pragma hdrstop
-#endif
-
-#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
-// ----------------------------------------------------------------------------
-
-struct WXDLLEXPORT wxPaintDCInfo
-{
- wxPaintDCInfo(wxWindow *win, wxPaintDCImpl *dc)
- {
- hwnd = win->GetHWND();
- hdc = dc->GetHDC();
- count = 1;
- }
-
- WXHWND hwnd; // window for this DC
- WXHDC hdc; // the DC handle
- size_t count; // usage count
-};
-
-#include "wx/arrimpl.cpp"
-
-WX_DEFINE_OBJARRAY(wxArrayDCInfo)
-
-// ===========================================================================
-// implementation
-// ===========================================================================
-
-// ----------------------------------------------------------------------------
-// wxWindowDCImpl
-// ----------------------------------------------------------------------------
-
-IMPLEMENT_ABSTRACT_CLASS(wxWindowDCImpl, wxPalmDCImpl)
-
-wxWindowDCImpl::wxWindowDCImpl( wxDC *owner ) :
- wxPalmDCImpl( owner )
-{
-}
-
-wxWindowDCImpl::wxWindowDCImpl( wxDC *owner, wxWindow *window ) :
- wxPalmDCImpl( owner )
-{
- wxCHECK_RET( window, wxT("invalid window in wxWindowDCImpl") );
-}
-
-void wxWindowDCImpl::InitDC()
-{
-
- // since we are a window dc we need to grab the palette from the window
-#if wxUSE_PALETTE
- InitializePalette();
-#endif
-}
-
-void wxWindowDCImpl::DoGetSize(int *width, int *height) const
-{
- wxCHECK_RET( m_window, wxT("wxWindowDCImpl without a window?") );
-
- m_window->GetSize(width, height);
-}
-
-// ----------------------------------------------------------------------------
-// wxClientDCImpl
-// ----------------------------------------------------------------------------
-
-IMPLEMENT_ABSTRACT_CLASS(wxClientDCImpl, wxWindowDCImpl)
-
-wxClientDCImpl::wxClientDCImpl( wxDC *owner ) :
- wxWindowDCImpl( owner )
-{
-}
-
-wxClientDCImpl::wxClientDCImpl( wxDC *owner, wxWindow *window ) :
- wxWindowDCImpl( owner )
-{
-}
-
-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__
-}
-
-wxClientDCImpl::~wxClientDCImpl()
-{
-}
-
-void wxClientDCImpl::DoGetSize(int *width, int *height) const
-{
- wxCHECK_RET( m_window, wxT("wxClientDCImpl without a window?") );
-
- m_window->GetClientSize(width, height);
-}
-
-// ----------------------------------------------------------------------------
-// wxPaintDCImpl
-// ----------------------------------------------------------------------------
-
-// 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 )
-{
-}
-
-wxPaintDCImpl::wxPaintDCImpl( wxDC *owner, wxWindow *window ) :
- wxClientDCImpl( owner )
-{
- wxCHECK_RET( window, wxT("NULL canvas in wxPaintDCImpl ctor") );
-
- m_window = window;
-
- // 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;
-}
-
-wxPaintDCImpl::~wxPaintDCImpl()
-{
- if ( m_hDC )
- {
- SelectOldObjects(m_hDC);
-
- size_t index;
- wxPaintDCInfo *info = FindInCache(&index);
-
- 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;
- }
-}
-
-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;
-}
projects / wxWidgets.git / blobdiff