78d2c24197
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@41046 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
143 lines
4.4 KiB
C++
143 lines
4.4 KiB
C++
/////////////////////////////////////////////////////////////////////////////
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// Name: src/dfb/dcclient.cpp
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// Purpose: wxWindowDC, wxClientDC and wxPaintDC
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// Author: Vaclav Slavik
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// Created: 2006-08-10
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// RCS-ID: $Id$
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// Copyright: (c) 2006 REA Elektronik GmbH
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// Licence: wxWindows licence
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/////////////////////////////////////////////////////////////////////////////
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// ===========================================================================
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// declarations
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// ===========================================================================
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// ---------------------------------------------------------------------------
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// headers
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// ---------------------------------------------------------------------------
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// For compilers that support precompilation, includes "wx.h".
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#include "wx/wxprec.h"
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#ifdef __BORLANDC__
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#pragma hdrstop
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#endif
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#include "wx/dcclient.h"
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#ifndef WX_PRECOMP
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#include "wx/window.h"
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#endif
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#include "wx/dfb/private.h"
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// ===========================================================================
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// implementation
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// ===========================================================================
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//-----------------------------------------------------------------------------
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// wxWindowDC
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//-----------------------------------------------------------------------------
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IMPLEMENT_DYNAMIC_CLASS(wxWindowDC, wxDC)
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wxWindowDC::wxWindowDC(wxWindow *win)
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{
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InitForWin(win, NULL);
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}
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void wxWindowDC::InitForWin(wxWindow *win, const wxRect *rect)
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{
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wxCHECK_RET( win, _T("invalid window") );
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// FIXME: this should be made to work: we need to detect that the window
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// is not visible and in that case, a) ignore any drawing actions
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// and b) provide dummy surface that can still be used to get
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// information (e.g. text extents):
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for ( wxWindow *w = win; w; w = w->GetParent() )
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{
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// painting on hidden TLW when non-TLW windows are shown is OK,
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// DirectFB manages that:
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if ( w->IsTopLevel() )
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break;
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wxASSERT_MSG( w->IsShown(),
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_T("painting on hidden window not implemented yet") );
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}
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// check if the rectangle covers full window and so is not needed:
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if ( rect && *rect == wxRect(win->GetSize()) )
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rect = NULL;
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// obtain the surface used for painting:
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wxIDirectFBSurfacePtr surface;
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if ( !rect )
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{
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wxCHECK_RET( win->GetSize().x > 0 && win->GetSize().y > 0,
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_T("window has invalid size") );
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surface = win->GetDfbSurface();
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}
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else
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{
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wxCHECK_RET( !rect || !rect->IsEmpty(), _T("invalid rectangle") );
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DFBRectangle dfbrect = { rect->x, rect->y, rect->width, rect->height };
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surface = win->GetDfbSurface()->GetSubSurface(&dfbrect);
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}
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if ( !surface )
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return;
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Init(surface);
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SetFont(win->GetFont());
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// offset coordinates to account for subsurface's origin coordinates:
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if ( rect )
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SetDeviceOrigin(rect->x, rect->y);
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}
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//-----------------------------------------------------------------------------
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// base class for wxClientDC and wxPaintDC
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//-----------------------------------------------------------------------------
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wxClientDCBase::wxClientDCBase(wxWindow *win)
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{
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wxCHECK_RET( win, _T("invalid window") );
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wxRect rect = win->GetClientRect();
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InitForWin(win, &rect);
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}
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//-----------------------------------------------------------------------------
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// wxClientDC
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//-----------------------------------------------------------------------------
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IMPLEMENT_DYNAMIC_CLASS(wxClientDC, wxWindowDC)
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wxClientDC::~wxClientDC()
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{
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// flip to surface so that the changes become visible
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wxIDirectFBSurfacePtr surface(GetDirectFBSurface());
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// FIXME: do this only if the surface was modified (as opposed to e.g.
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// used only to obtain text metrics)
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if ( surface )
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surface->Flip(NULL, DSFLIP_NONE);
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}
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//-----------------------------------------------------------------------------
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// wxPaintDC
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//-----------------------------------------------------------------------------
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IMPLEMENT_DYNAMIC_CLASS(wxPaintDC, wxWindowDC)
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#warning "wxPaintDC ctor must respect m_updateRegion"
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wxPaintDC::~wxPaintDC()
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{
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// NB: do *not* flip the surface: wxPaintDC is used with EVT_PAINT and the
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// surface will be flipped for the entire TLW once all children are
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// repainted
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}
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