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0e320a79 1/////////////////////////////////////////////////////////////////////////////
670f9935 2// Name: src/os2/dcmemory.cpp
0e320a79 3// Purpose: wxMemoryDC class
fb46a9a6 4// Author: David Webster
0e320a79 5// Modified by:
fb46a9a6 6// Created: 10/14/99
0e320a79 7// RCS-ID: $Id$
fb46a9a6 8// Copyright: (c) David Webster
65571936 9// Licence: wxWindows licence
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10/////////////////////////////////////////////////////////////////////////////
11
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12// For compilers that support precompilation, includes "wx.h".
13#include "wx/wxprec.h"
14
f38924e8 15#include "wx/dcmemory.h"
2c24e7ad 16#include "wx/os2/dcmemory.h"
f38924e8 17
fb46a9a6 18#ifndef WX_PRECOMP
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19 #include "wx/utils.h"
20 #include "wx/app.h"
21 #include "wx/log.h"
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22#endif
23
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24#include "wx/os2/private.h"
25
2c24e7ad 26IMPLEMENT_ABSTRACT_CLASS(wxMemoryDCImpl, wxPMDCImpl)
0e320a79 27
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28/////////////////////////////////////////////////////////////////////////////
29// Memory DC
30/////////////////////////////////////////////////////////////////////////////
0e320a79 31
2c24e7ad
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32wxMemoryDCImpl::wxMemoryDCImpl( wxMemoryDC *owner )
33 : wxPMDCImpl( owner )
34{
35 CreateCompatible(NULL);
36 Init();
37}
38
39wxMemoryDCImpl::wxMemoryDCImpl( wxMemoryDC *owner, wxBitmap& bitmap )
40 : wxPMDCImpl( owner )
41{
42 CreateCompatible(NULL);
43 Init();
44 DoSelect(bitmap);
45}
46
47wxMemoryDCImpl::wxMemoryDCImpl( wxMemoryDC *owner, wxDC *pOldDC)
48 : wxPMDCImpl( owner )
e1a688e4 49{
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50 wxCHECK_RET( pOldDC, _T("NULL dc in wxMemoryDC ctor") );
51
e1a688e4 52 CreateCompatible(pOldDC);
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53 Init();
54} // end of wxMemoryDC::wxMemoryDC
55
2c24e7ad 56void wxMemoryDCImpl::Init()
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57{
58 if (m_ok)
59 {
60 SetBrush(*wxWHITE_BRUSH);
61 SetPen(*wxBLACK_PEN);
62
63 // the background mode is only used for text background and is set in
64 // DrawText() to OPAQUE as required, otherwise always TRANSPARENT
65 ::GpiSetBackMix( GetHPS(), BM_LEAVEALONE );
66 }
1d0edc0f 67 memset(&m_vRclPaint, 0, sizeof(m_vRclPaint));
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68} // end of wxMemoryDC::Init
69
2c24e7ad 70bool wxMemoryDCImpl::CreateCompatible( wxDC* WXUNUSED(pDC) )
0e320a79 71{
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72 HDC hDC;
73 HPS hPS;
74 DEVOPENSTRUC vDOP = {0L, "DISPLAY", NULL, 0L, 0L, 0L, 0L, 0L, 0L};
75 SIZEL vSize = {0, 0};
23122f8c 76
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77 //
78 // Create a memory device context
79 //
e1a688e4 80 hDC = ::DevOpenDC(vHabmain, OD_MEMORY, "*", 5L, (PDEVOPENDATA)&vDOP, NULLHANDLE);
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81 if (hDC != DEV_ERROR)
82 {
83 hPS = ::GpiCreatePS(vHabmain, hDC, &vSize, PU_PELS | GPIT_MICRO | GPIA_ASSOC);
84 if (hPS != GPI_ERROR)
85 {
86 m_hPS = hPS;
87 m_hDC = hDC;
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88 m_ok = true;
89 m_bOwnsDC = true;
e1a688e4 90 //
77ffb593 91 // Set the wxWidgets color table
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92 //
93 ::GpiCreateLogColorTable( m_hPS
94 ,0L
95 ,LCOLF_CONSECRGB
96 ,0L
97 ,(LONG)wxTheColourDatabase->m_nSize
98 ,(PLONG)wxTheColourDatabase->m_palTable
99 );
100 ::GpiCreateLogColorTable( m_hPS
101 ,0L
102 ,LCOLF_RGB
103 ,0L
104 ,0L
105 ,NULL
106 );
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107 }
108 else
109 {
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110 m_hPS = NULLHANDLE;
111 m_hDC = NULLHANDLE;
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112 m_ok = false;
113 m_bOwnsDC = false;
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114 }
115 }
116 else
117 {
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118 m_hPS = NULLHANDLE;
119 m_hDC = NULLHANDLE;
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120 m_ok = false;
121 m_bOwnsDC = false;
23122f8c 122 }
23122f8c 123
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124 //
125 // As we created the DC, we must delete it in the dtor
126 //
6670f564 127 m_bOwnsDC = true;
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128 m_ok = m_hDC != 0;
129 return m_ok;
130} // end of wxMemoryDC::CreateCompatible
23122f8c 131
2c24e7ad 132void wxMemoryDCImpl::DoSelect(
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133 const wxBitmap& rBitmap
134)
0e320a79 135{
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136 //
137 // Select old bitmap out of the device context
138 //
139 if (m_hOldBitmap)
140 {
141 ::GpiSetBitmap(m_hPS, NULLHANDLE);
142 if (m_vSelectedBitmap.Ok())
143 {
144 m_vSelectedBitmap.SetSelectedInto(NULL);
145 m_vSelectedBitmap = wxNullBitmap;
146 }
147 }
148
149 //
150 // Check for whether the bitmap is already selected into a device context
151 //
152 wxCHECK_RET( !rBitmap.GetSelectedInto() ||
2c24e7ad 153 (rBitmap.GetSelectedInto() == GetOwner()),
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154 wxT("Bitmap is selected in another wxMemoryDC, delete the first wxMemoryDC or use SelectObject(NULL)") );
155
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156 WXHBITMAP hBmp = rBitmap.GetHBITMAP();
157
158 if (!hBmp)
159 {
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160 //
161 // Bmps drawn to are upside down, so flip it before committing
162 //
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163 POINTL vPoint[4] = { {0, m_vSelectedBitmap.GetHeight()}
164 ,{m_vSelectedBitmap.GetWidth(), 0}
165 ,{0, 0}
166 ,{m_vSelectedBitmap.GetWidth(), m_vSelectedBitmap.GetHeight()}
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167 };
168
169
170 ::GpiBitBlt( m_hPS
171 ,m_hPS
172 ,4
173 ,vPoint
174 ,ROP_SRCCOPY
175 ,BBO_IGNORE
176 );
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177 m_vSelectedBitmap.SetSelectedInto(NULL);
178 }
fea35690 179
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180 m_vSelectedBitmap = rBitmap;
181
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182
183 if (!hBmp)
29172908 184 {
ad6bd870 185
29172908 186 m_hOldBitmap = (WXHBITMAP)::GpiSetBitmap(m_hPS, NULLHANDLE);
23122f8c 187 return;
29172908 188 }
2c24e7ad 189 m_vSelectedBitmap.SetSelectedInto(GetOwner());
29172908 190 m_hOldBitmap = (WXHBITMAP)::GpiSetBitmap(m_hPS, (HBITMAP)hBmp);
23122f8c 191
29172908 192 if (m_hOldBitmap == HBM_ERROR)
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193 {
194 wxLogLastError(wxT("SelectObject(memDC, bitmap)"));
195 wxFAIL_MSG(wxT("Couldn't select a bitmap into wxMemoryDC"));
196 }
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197} // end of wxMemoryDC::SelectObject
198
2c24e7ad 199void wxMemoryDCImpl::DoGetSize(
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200 int* pWidth
201, int* pHeight
202) const
0e320a79 203{
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204 if (!m_vSelectedBitmap.Ok())
205 {
206 *pWidth = 0;
207 *pHeight = 0;
208 return;
209 }
210 *pWidth = m_vSelectedBitmap.GetWidth();
211 *pHeight = m_vSelectedBitmap.GetHeight();
212} // end of wxMemoryDC::DoGetSize