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1 | /////////////////////////////////////////////////////////////////////////////// |
2 | // Name: msw/ownerdrw.cpp | |
3 | // Purpose: implementation of wxOwnerDrawn class | |
4 | // Author: Vadim Zeitlin | |
5 | // Modified by: | |
6 | // Created: 13.11.97 | |
7 | // RCS-ID: $Id$ | |
8 | // Copyright: (c) 1998 Vadim Zeitlin <zeitlin@dptmaths.ens-cachan.fr> | |
9 | // Licence: wxWindows license | |
10 | /////////////////////////////////////////////////////////////////////////////// | |
11 | ||
a3b46648 UU |
12 | #ifdef __GNUG__ |
13 | #pragma implementation | |
14 | #endif | |
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15 | |
16 | // For compilers that support precompilation, includes "wx.h". | |
17 | #include "wx/wxprec.h" | |
18 | ||
19 | #ifdef __BORLANDC__ | |
a3b46648 | 20 | #pragma hdrstop |
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21 | #endif |
22 | ||
23 | #ifndef WX_PRECOMP | |
2432b92d JS |
24 | #include "wx/font.h" |
25 | #include "wx/bitmap.h" | |
26 | #include "wx/dcmemory.h" | |
2bda0e17 | 27 | #include "wx/menu.h" |
2432b92d | 28 | #include "wx/utils.h" |
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29 | #endif |
30 | ||
31 | #include "wx/ownerdrw.h" | |
32 | #include "wx/menuitem.h" | |
33 | ||
34 | #include <windows.h> | |
35 | ||
2432b92d JS |
36 | #ifdef DrawText |
37 | #undef DrawText | |
38 | #endif | |
39 | ||
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40 | // ============================================================================ |
41 | // implementation of wxOwnerDrawn class | |
42 | // ============================================================================ | |
43 | ||
44 | // ctor | |
45 | // ---- | |
3aadbb82 | 46 | wxOwnerDrawn::wxOwnerDrawn(const wxString& str, |
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47 | bool bCheckable, bool bMenuItem) |
48 | : m_strName(str) | |
49 | { | |
50 | m_bCheckable = bCheckable; | |
51 | m_bOwnerDrawn = FALSE; | |
52 | m_nHeight = 0; | |
53 | m_nMarginWidth = ms_nLastMarginWidth; | |
54 | } | |
55 | ||
2432b92d | 56 | #if defined(__WXMSW__) && defined(__WIN32__) && defined(SM_CXMENUCHECK) |
c86f1403 | 57 | size_t wxOwnerDrawn::ms_nDefaultMarginWidth = GetSystemMetrics(SM_CXMENUCHECK); |
2bda0e17 | 58 | #else // # what is the reasonable default? |
c86f1403 | 59 | size_t wxOwnerDrawn::ms_nDefaultMarginWidth = 15; |
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60 | #endif |
61 | ||
c86f1403 | 62 | size_t wxOwnerDrawn::ms_nLastMarginWidth = ms_nDefaultMarginWidth; |
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63 | |
64 | // drawing | |
65 | // ------- | |
66 | ||
67 | // get size of the item | |
c86f1403 | 68 | bool wxOwnerDrawn::OnMeasureItem(size_t *pwidth, size_t *pheight) |
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69 | { |
70 | wxMemoryDC dc; | |
71 | dc.SetFont(GetFont()); | |
72 | ||
73 | // ## ugly... | |
74 | char *szStripped = new char[m_strName.Len()]; | |
75 | wxStripMenuCodes((char *)m_strName.c_str(), szStripped); | |
76 | wxString str = szStripped; | |
77 | delete [] szStripped; | |
78 | ||
79 | // # without this menu items look too tightly packed (at least under Windows) | |
80 | str += 'W'; // 'W' is typically the widest letter | |
81 | ||
82 | dc.GetTextExtent(str, (long *)pwidth, (long *)pheight); | |
83 | m_nHeight = *pheight; // remember height for use in OnDrawItem | |
84 | ||
85 | return TRUE; | |
86 | } | |
87 | ||
88 | // searching for this macro you'll find all the code where I'm using the native | |
89 | // Win32 GDI functions and not wxWindows ones. Might help to whoever decides to | |
90 | // port this code to X. (VZ) | |
91 | ||
57c208c5 | 92 | #if defined(__WIN32__) && !defined(__SC__) && !defined(__TWIN32__) |
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93 | #define O_DRAW_NATIVE_API // comments below explain why I use it |
94 | #endif | |
95 | ||
96 | // draw the item | |
97 | bool wxOwnerDrawn::OnDrawItem(wxDC& dc, const wxRect& rc, wxODAction act, wxODStatus st) | |
98 | { | |
99 | // we do nothing on focus change | |
100 | if ( act == wxODFocusChanged ) | |
101 | return TRUE; | |
102 | ||
103 | // wxColor <-> RGB | |
104 | #define ToRGB(col) RGB(col.Red(), col.Green(), col.Blue()) | |
105 | #define UnRGB(col) GetRValue(col), GetGValue(col), GetBValue(col) | |
106 | ||
107 | // set the colors | |
108 | // -------------- | |
109 | DWORD colBack, colText; | |
110 | if ( st & wxODSelected ) { | |
111 | colBack = GetSysColor(COLOR_HIGHLIGHT); | |
112 | colText = GetSysColor(COLOR_HIGHLIGHTTEXT); | |
113 | } | |
114 | else { | |
115 | // fall back to default colors if none explicitly specified | |
116 | colBack = m_colBack.Ok() ? ToRGB(m_colBack) : GetSysColor(COLOR_WINDOW); | |
117 | colText = m_colText.Ok() ? ToRGB(m_colText) : GetSysColor(COLOR_WINDOWTEXT); | |
118 | } | |
119 | ||
120 | #ifdef O_DRAW_NATIVE_API | |
121 | #define hdc (HDC)dc.GetHDC() | |
122 | COLORREF colOldText = ::SetTextColor(hdc, colText), | |
123 | colOldBack = ::SetBkColor(hdc, colBack); | |
124 | #else | |
125 | dc.SetTextForeground(wxColor(UnRGB(colText))); | |
126 | dc.SetTextBackground(wxColor(UnRGB(colBack))); | |
127 | #endif | |
128 | ||
129 | // select the font and draw the text | |
130 | // --------------------------------- | |
131 | ||
132 | // determine where to draw and leave space for a check-mark. | |
133 | int x = rc.x + GetMarginWidth(); | |
134 | ||
135 | // using native API because it reckognizes '&' | |
136 | #ifdef O_DRAW_NATIVE_API | |
137 | int nPrevMode = SetBkMode(hdc, TRANSPARENT); | |
138 | HBRUSH hbr = CreateSolidBrush(colBack), | |
c4e7c2aa | 139 | hPrevBrush = (HBRUSH) SelectObject(hdc, hbr); |
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140 | |
141 | RECT rectAll = { rc.GetLeft(), rc.GetTop(), rc.GetRight(), rc.GetBottom() }; | |
142 | FillRect(hdc, &rectAll, hbr); | |
143 | ||
144 | // use default font if no font set | |
145 | HFONT hfont; | |
146 | if ( m_font.Ok() ) { | |
147 | m_font.RealizeResource(); | |
148 | hfont = (HFONT)m_font.GetResourceHandle(); | |
149 | } | |
150 | else { | |
151 | hfont = (HFONT)::GetStockObject(SYSTEM_FONT); | |
152 | } | |
153 | ||
c4e7c2aa | 154 | HFONT hPrevFont = (HFONT) ::SelectObject(hdc, hfont); |
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155 | DrawState(hdc, NULL, NULL, |
156 | (LPARAM)(const char *)m_strName, m_strName.Length(), | |
157 | x, rc.y, rc.GetWidth(), rc.GetHeight(), | |
158 | DST_PREFIXTEXT | ( st & wxODDisabled ? DSS_DISABLED : 0) ); | |
159 | ||
160 | (void)SelectObject(hdc, hPrevBrush); | |
161 | (void)SelectObject(hdc, hPrevFont); | |
162 | (void)SetBkMode(hdc, nPrevMode); | |
163 | #else | |
164 | dc.SetFont(GetFont()); | |
165 | dc.DrawText(m_strName, x, rc.y); | |
166 | #endif //O_DRAW_NATIVE_API | |
167 | ||
168 | // draw the bitmap | |
169 | // --------------- | |
170 | if ( IsCheckable() && !m_bmpChecked.Ok() ) { | |
171 | if ( st & wxODChecked ) { | |
172 | // using native APIs for performance and simplicity | |
5260b1c5 | 173 | #ifdef O_DRAW_NATIVE_API |
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174 | // what goes on: DrawFrameControl creates a b/w mask, |
175 | // then we copy it to screen to have right colors | |
176 | ||
177 | // first create a monochrome bitmap in a memory DC | |
178 | HDC hdcMem = CreateCompatibleDC(hdc); | |
179 | HBITMAP hbmpCheck = CreateBitmap(GetMarginWidth(), m_nHeight, 1, 1, 0); | |
180 | SelectObject(hdcMem, hbmpCheck); | |
181 | ||
182 | // then draw a check mark into it | |
183 | RECT rect = { 0, 0, GetMarginWidth(), m_nHeight }; | |
2432b92d | 184 | #ifndef __SC__ |
2bda0e17 | 185 | DrawFrameControl(hdcMem, &rect, DFC_MENU, DFCS_MENUCHECK); |
2432b92d | 186 | #endif |
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187 | |
188 | // finally copy it to screen DC and clean up | |
189 | BitBlt(hdc, rc.x, rc.y, GetMarginWidth(), m_nHeight, | |
190 | hdcMem, 0, 0, SRCCOPY); | |
191 | DeleteDC(hdcMem); | |
5260b1c5 | 192 | #else |
2bda0e17 | 193 | // #### to do: perhaps using Marlett font (create equiv. font under X) |
5260b1c5 JS |
194 | // wxFAIL("not implemented"); |
195 | #endif //O_DRAW_NATIVE_API | |
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196 | } |
197 | } | |
198 | else { | |
199 | // for uncheckable item we use only the 'checked' bitmap | |
200 | wxBitmap bmp(GetBitmap(IsCheckable() ? ((st & wxODChecked) != 0) : TRUE)); | |
201 | if ( bmp.Ok() ) { | |
202 | wxMemoryDC dcMem(&dc); | |
203 | dcMem.SelectObject(bmp); | |
204 | ||
205 | // center bitmap | |
206 | int nBmpWidth = bmp.GetWidth(), | |
207 | nBmpHeight = bmp.GetHeight(); | |
208 | ||
209 | // there should be enough place! | |
210 | wxASSERT((nBmpWidth <= rc.GetWidth()) && (nBmpHeight <= rc.GetHeight())); | |
211 | ||
212 | dc.Blit(rc.x + (GetMarginWidth() - nBmpWidth) / 2, | |
213 | rc.y + (m_nHeight - nBmpHeight) /2, | |
214 | nBmpWidth, nBmpHeight, | |
215 | &dcMem, 0, 0, wxCOPY); | |
216 | ||
217 | if ( st & wxODSelected ) { | |
218 | #ifdef O_DRAW_NATIVE_API | |
219 | RECT rectBmp = { rc.GetLeft(), rc.GetTop(), | |
220 | rc.GetLeft() + GetMarginWidth(), | |
221 | rc.GetTop() + m_nHeight }; | |
222 | SetBkColor(hdc, colBack); | |
223 | DrawEdge(hdc, &rectBmp, EDGE_RAISED, BF_SOFT | BF_RECT); | |
224 | #else | |
225 | // ## to write portable DrawEdge | |
226 | #endif //O_DRAW_NATIVE_API | |
227 | } | |
228 | } | |
229 | } | |
230 | ||
231 | #ifdef O_DRAW_NATIVE_API | |
232 | ::SetTextColor(hdc, colOldText); | |
233 | ::SetBkColor(hdc, colOldBack); | |
234 | ||
235 | #undef hdc | |
236 | #endif //O_DRAW_NATIVE_API | |
237 | ||
238 | return TRUE; | |
239 | } | |
240 |