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1 | ///////////////////////////////////////////////////////////////////////////// |
2 | // Name: dcmemory.cpp | |
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 DW |
8 | // Copyright: (c) David Webster |
9 | // Licence: wxWindows licence | |
0e320a79 DW |
10 | ///////////////////////////////////////////////////////////////////////////// |
11 | ||
fb46a9a6 DW |
12 | // For compilers that support precompilation, includes "wx.h". |
13 | #include "wx/wxprec.h" | |
14 | ||
15 | #ifndef WX_PRECOMP | |
16 | #include "wx/utils.h" | |
3417f661 SN |
17 | #include "wx/app.h" |
18 | #include "wx/log.h" | |
0e320a79 DW |
19 | #endif |
20 | ||
fb46a9a6 DW |
21 | #include "wx/os2/private.h" |
22 | ||
0e320a79 DW |
23 | #include "wx/dcmemory.h" |
24 | ||
fb46a9a6 | 25 | IMPLEMENT_DYNAMIC_CLASS(wxMemoryDC, wxDC) |
0e320a79 | 26 | |
23122f8c DW |
27 | ///////////////////////////////////////////////////////////////////////////// |
28 | // Memory DC | |
29 | ///////////////////////////////////////////////////////////////////////////// | |
0e320a79 DW |
30 | |
31 | wxMemoryDC::wxMemoryDC(void) | |
32 | { | |
e1a688e4 DW |
33 | CreateCompatible(NULL); |
34 | Init(); | |
23122f8c DW |
35 | } // end of wxMemoryDC::wxMemoryDC |
36 | ||
37 | wxMemoryDC::wxMemoryDC( | |
38 | wxDC* pOldDC | |
39 | ) | |
e1a688e4 DW |
40 | { |
41 | pOldDC->BeginDrawing(); | |
42 | CreateCompatible(pOldDC); | |
43 | pOldDC->EndDrawing(); | |
44 | Init(); | |
45 | } // end of wxMemoryDC::wxMemoryDC | |
46 | ||
47 | void wxMemoryDC::Init() | |
48 | { | |
49 | if (m_ok) | |
50 | { | |
51 | SetBrush(*wxWHITE_BRUSH); | |
52 | SetPen(*wxBLACK_PEN); | |
53 | ||
54 | // the background mode is only used for text background and is set in | |
55 | // DrawText() to OPAQUE as required, otherwise always TRANSPARENT | |
56 | ::GpiSetBackMix( GetHPS(), BM_LEAVEALONE ); | |
57 | } | |
58 | } // end of wxMemoryDC::Init | |
59 | ||
60 | bool wxMemoryDC::CreateCompatible( | |
61 | wxDC* pDC | |
62 | ) | |
0e320a79 | 63 | { |
23122f8c DW |
64 | HDC hDC; |
65 | HPS hPS; | |
66 | DEVOPENSTRUC vDOP = {0L, "DISPLAY", NULL, 0L, 0L, 0L, 0L, 0L, 0L}; | |
67 | SIZEL vSize = {0, 0}; | |
68 | ||
23122f8c DW |
69 | // |
70 | // Create a memory device context | |
71 | // | |
e1a688e4 | 72 | hDC = ::DevOpenDC(vHabmain, OD_MEMORY, "*", 5L, (PDEVOPENDATA)&vDOP, NULLHANDLE); |
23122f8c DW |
73 | if (hDC != DEV_ERROR) |
74 | { | |
75 | hPS = ::GpiCreatePS(vHabmain, hDC, &vSize, PU_PELS | GPIT_MICRO | GPIA_ASSOC); | |
76 | if (hPS != GPI_ERROR) | |
77 | { | |
78 | m_hPS = hPS; | |
79 | m_hDC = hDC; | |
80 | m_ok = TRUE; | |
81 | m_bOwnsDC = TRUE; | |
e1a688e4 DW |
82 | // |
83 | // Set the wxWindows color table | |
84 | // | |
85 | ::GpiCreateLogColorTable( m_hPS | |
86 | ,0L | |
87 | ,LCOLF_CONSECRGB | |
88 | ,0L | |
89 | ,(LONG)wxTheColourDatabase->m_nSize | |
90 | ,(PLONG)wxTheColourDatabase->m_palTable | |
91 | ); | |
92 | ::GpiCreateLogColorTable( m_hPS | |
93 | ,0L | |
94 | ,LCOLF_RGB | |
95 | ,0L | |
96 | ,0L | |
97 | ,NULL | |
98 | ); | |
23122f8c DW |
99 | } |
100 | else | |
101 | { | |
23122f8c DW |
102 | m_hPS = NULLHANDLE; |
103 | m_hDC = NULLHANDLE; | |
104 | m_ok = FALSE; | |
105 | m_bOwnsDC = FALSE; | |
106 | } | |
107 | } | |
108 | else | |
109 | { | |
23122f8c DW |
110 | m_hPS = NULLHANDLE; |
111 | m_hDC = NULLHANDLE; | |
112 | m_ok = FALSE; | |
113 | m_bOwnsDC = FALSE; | |
114 | } | |
23122f8c | 115 | |
e1a688e4 DW |
116 | // |
117 | // As we created the DC, we must delete it in the dtor | |
118 | // | |
119 | m_bOwnsDC = TRUE; | |
120 | m_ok = m_hDC != 0; | |
121 | return m_ok; | |
122 | } // end of wxMemoryDC::CreateCompatible | |
23122f8c DW |
123 | |
124 | void wxMemoryDC::SelectObject( | |
125 | const wxBitmap& rBitmap | |
126 | ) | |
0e320a79 | 127 | { |
23122f8c DW |
128 | // |
129 | // Select old bitmap out of the device context | |
130 | // | |
131 | if (m_hOldBitmap) | |
132 | { | |
133 | ::GpiSetBitmap(m_hPS, NULLHANDLE); | |
134 | if (m_vSelectedBitmap.Ok()) | |
135 | { | |
136 | m_vSelectedBitmap.SetSelectedInto(NULL); | |
137 | m_vSelectedBitmap = wxNullBitmap; | |
138 | } | |
139 | } | |
140 | ||
141 | // | |
142 | // Check for whether the bitmap is already selected into a device context | |
143 | // | |
144 | wxCHECK_RET( !rBitmap.GetSelectedInto() || | |
145 | (rBitmap.GetSelectedInto() == this), | |
146 | wxT("Bitmap is selected in another wxMemoryDC, delete the first wxMemoryDC or use SelectObject(NULL)") ); | |
147 | ||
148 | m_vSelectedBitmap = rBitmap; | |
149 | ||
150 | WXHBITMAP hBmp = m_vSelectedBitmap.GetHBITMAP(); | |
151 | ||
152 | if (!hBmp) | |
153 | return; | |
154 | ||
155 | m_vSelectedBitmap.SetSelectedInto(this); | |
156 | hBmp = (WXHBITMAP)::GpiSetBitmap(m_hPS, (HBITMAP)hBmp); | |
157 | ||
5afb9458 | 158 | if (hBmp == HBM_ERROR) |
23122f8c DW |
159 | { |
160 | wxLogLastError(wxT("SelectObject(memDC, bitmap)")); | |
161 | wxFAIL_MSG(wxT("Couldn't select a bitmap into wxMemoryDC")); | |
162 | } | |
163 | else if (!m_hOldBitmap) | |
164 | { | |
165 | m_hOldBitmap = hBmp; | |
166 | } | |
167 | } // end of wxMemoryDC::SelectObject | |
168 | ||
169 | void wxMemoryDC::DoGetSize( | |
170 | int* pWidth | |
171 | , int* pHeight | |
172 | ) const | |
0e320a79 | 173 | { |
23122f8c DW |
174 | if (!m_vSelectedBitmap.Ok()) |
175 | { | |
176 | *pWidth = 0; | |
177 | *pHeight = 0; | |
178 | return; | |
179 | } | |
180 | *pWidth = m_vSelectedBitmap.GetWidth(); | |
181 | *pHeight = m_vSelectedBitmap.GetHeight(); | |
182 | } // end of wxMemoryDC::DoGetSize | |
0e320a79 | 183 | |
e1a688e4 DW |
184 | void wxMemoryDC::DoDrawRectangle( |
185 | wxCoord vX | |
186 | , wxCoord vY | |
187 | , wxCoord vWidth | |
188 | , wxCoord vHeight | |
189 | ) | |
190 | { | |
191 | wxDC::DoDrawRectangle(vX, vY, vWidth, vHeight); | |
192 | } // end of wxMemoryDC::DoDrawRectangle |