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