/////////////////////////////////////////////////////////////////////////////
// Name: dcmemory.cpp
// Purpose: wxMemoryDC class
-// Author: AUTHOR
+// Author: David Webster
// Modified by:
-// Created: 01/02/97
+// Created: 10/14/99
// RCS-ID: $Id$
-// Copyright: (c) AUTHOR
-// Licence: wxWindows licence
+// Copyright: (c) David Webster
+// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
-#ifdef __GNUG__
-#pragma implementation "dcmemory.h"
+// For compilers that support precompilation, includes "wx.h".
+#include "wx/wxprec.h"
+
+#ifndef WX_PRECOMP
+#include "wx/utils.h"
+#include "wx/app.h"
+#include "wx/log.h"
#endif
+#include "wx/os2/private.h"
+
#include "wx/dcmemory.h"
-//-----------------------------------------------------------------------------
-// wxMemoryDC
-//-----------------------------------------------------------------------------
+IMPLEMENT_DYNAMIC_CLASS(wxMemoryDC, wxDC)
-IMPLEMENT_DYNAMIC_CLASS(wxMemoryDC,wxPaintDC)
+/////////////////////////////////////////////////////////////////////////////
+// Memory DC
+/////////////////////////////////////////////////////////////////////////////
wxMemoryDC::wxMemoryDC(void)
{
- m_ok = FALSE;
-};
+ CreateCompatible(NULL);
+ Init();
+} // end of wxMemoryDC::wxMemoryDC
-wxMemoryDC::wxMemoryDC( wxDC *WXUNUSED(dc) )
+wxMemoryDC::wxMemoryDC(
+ wxDC* pOldDC
+)
{
- m_ok = FALSE;
-};
+ pOldDC->BeginDrawing();
+ CreateCompatible(pOldDC);
+ pOldDC->EndDrawing();
+ Init();
+} // end of wxMemoryDC::wxMemoryDC
-wxMemoryDC::~wxMemoryDC(void)
+void wxMemoryDC::Init()
{
-};
+ if (m_ok)
+ {
+ SetBrush(*wxWHITE_BRUSH);
+ SetPen(*wxBLACK_PEN);
+
+ // the background mode is only used for text background and is set in
+ // DrawText() to OPAQUE as required, otherwise always TRANSPARENT
+ ::GpiSetBackMix( GetHPS(), BM_LEAVEALONE );
+ }
+ memset(&m_vRclPaint, 0, sizeof(m_vRclPaint));
+} // end of wxMemoryDC::Init
-void wxMemoryDC::SelectObject( const wxBitmap& bitmap )
+bool wxMemoryDC::CreateCompatible(
+ wxDC* pDC
+)
{
- m_selected = bitmap;
- if (m_selected.Ok())
- {
- }
- else
- {
- m_ok = FALSE;
- };
-};
-
-void wxMemoryDC::GetSize( int *width, int *height ) const
+ HDC hDC;
+ HPS hPS;
+ DEVOPENSTRUC vDOP = {0L, "DISPLAY", NULL, 0L, 0L, 0L, 0L, 0L, 0L};
+ SIZEL vSize = {0, 0};
+
+ //
+ // Create a memory device context
+ //
+ hDC = ::DevOpenDC(vHabmain, OD_MEMORY, "*", 5L, (PDEVOPENDATA)&vDOP, NULLHANDLE);
+ if (hDC != DEV_ERROR)
+ {
+ hPS = ::GpiCreatePS(vHabmain, hDC, &vSize, PU_PELS | GPIT_MICRO | GPIA_ASSOC);
+ if (hPS != GPI_ERROR)
+ {
+ m_hPS = hPS;
+ m_hDC = hDC;
+ m_ok = TRUE;
+ m_bOwnsDC = TRUE;
+ //
+ // Set the wxWindows color table
+ //
+ ::GpiCreateLogColorTable( m_hPS
+ ,0L
+ ,LCOLF_CONSECRGB
+ ,0L
+ ,(LONG)wxTheColourDatabase->m_nSize
+ ,(PLONG)wxTheColourDatabase->m_palTable
+ );
+ ::GpiCreateLogColorTable( m_hPS
+ ,0L
+ ,LCOLF_RGB
+ ,0L
+ ,0L
+ ,NULL
+ );
+ }
+ else
+ {
+ m_hPS = NULLHANDLE;
+ m_hDC = NULLHANDLE;
+ m_ok = FALSE;
+ m_bOwnsDC = FALSE;
+ }
+ }
+ else
+ {
+ m_hPS = NULLHANDLE;
+ m_hDC = NULLHANDLE;
+ m_ok = FALSE;
+ m_bOwnsDC = FALSE;
+ }
+
+ //
+ // As we created the DC, we must delete it in the dtor
+ //
+ m_bOwnsDC = TRUE;
+ m_ok = m_hDC != 0;
+ return m_ok;
+} // end of wxMemoryDC::CreateCompatible
+
+void wxMemoryDC::SelectObject(
+ const wxBitmap& rBitmap
+)
{
- if (m_selected.Ok())
- {
- if (width) (*width) = m_selected.GetWidth();
- if (height) (*height) = m_selected.GetHeight();
- }
- else
- {
- if (width) (*width) = 0;
- if (height) (*height) = 0;
- };
-};
+ //
+ // Select old bitmap out of the device context
+ //
+ if (m_hOldBitmap)
+ {
+ ::GpiSetBitmap(m_hPS, NULLHANDLE);
+ if (m_vSelectedBitmap.Ok())
+ {
+ m_vSelectedBitmap.SetSelectedInto(NULL);
+ m_vSelectedBitmap = wxNullBitmap;
+ }
+ }
+
+ //
+ // Check for whether the bitmap is already selected into a device context
+ //
+ wxCHECK_RET( !rBitmap.GetSelectedInto() ||
+ (rBitmap.GetSelectedInto() == this),
+ wxT("Bitmap is selected in another wxMemoryDC, delete the first wxMemoryDC or use SelectObject(NULL)") );
+ WXHBITMAP hBmp = rBitmap.GetHBITMAP();
+
+ if (!hBmp)
+ {
+ //
+ // Bmps drawn to are upside down, so flip it before committing
+ //
+ POINTL vPoint[4] = { {0, m_vSelectedBitmap.GetHeight()}
+ ,{m_vSelectedBitmap.GetWidth(), 0}
+ ,{0, 0}
+ ,{m_vSelectedBitmap.GetWidth(), m_vSelectedBitmap.GetHeight()}
+ };
+
+
+ ::GpiBitBlt( m_hPS
+ ,m_hPS
+ ,4
+ ,vPoint
+ ,ROP_SRCCOPY
+ ,BBO_IGNORE
+ );
+ m_vSelectedBitmap.SetSelectedInto(NULL);
+ }
+ m_vSelectedBitmap = rBitmap;
+
+
+ if (!hBmp)
+ {
+
+ m_hOldBitmap = (WXHBITMAP)::GpiSetBitmap(m_hPS, NULLHANDLE);
+ return;
+ }
+ m_vSelectedBitmap.SetSelectedInto(this);
+ m_hOldBitmap = (WXHBITMAP)::GpiSetBitmap(m_hPS, (HBITMAP)hBmp);
+
+ if (m_hOldBitmap == HBM_ERROR)
+ {
+ wxLogLastError(wxT("SelectObject(memDC, bitmap)"));
+ wxFAIL_MSG(wxT("Couldn't select a bitmap into wxMemoryDC"));
+ }
+} // end of wxMemoryDC::SelectObject
+
+void wxMemoryDC::DoGetSize(
+ int* pWidth
+, int* pHeight
+) const
+{
+ if (!m_vSelectedBitmap.Ok())
+ {
+ *pWidth = 0;
+ *pHeight = 0;
+ return;
+ }
+ *pWidth = m_vSelectedBitmap.GetWidth();
+ *pHeight = m_vSelectedBitmap.GetHeight();
+} // end of wxMemoryDC::DoGetSize
projects / wxWidgets.git / blobdiff