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1 | ///////////////////////////////////////////////////////////////////////////// | |
2 | // Name: src/msw/cursor.cpp | |
3 | // Purpose: wxCursor class | |
4 | // Author: Julian Smart | |
5 | // Modified by: | |
6 | // Created: 01/02/97 | |
7 | // RCS-ID: $Id$ | |
8 | // Copyright: (c) 1997-2003 Julian Smart and Vadim Zeitlin | |
9 | // Licence: wxWindows licence | |
10 | ///////////////////////////////////////////////////////////////////////////// | |
11 | ||
12 | // ============================================================================ | |
13 | // declarations | |
14 | // ============================================================================ | |
15 | ||
16 | // ---------------------------------------------------------------------------- | |
17 | // headers | |
18 | // ---------------------------------------------------------------------------- | |
19 | ||
20 | #if defined(__GNUG__) && !defined(NO_GCC_PRAGMA) | |
21 | #pragma implementation "cursor.h" | |
22 | #endif | |
23 | ||
24 | // For compilers that support precompilation, includes "wx.h". | |
25 | #include "wx/wxprec.h" | |
26 | ||
27 | #ifdef __BORLANDC__ | |
28 | #pragma hdrstop | |
29 | #endif | |
30 | ||
31 | #ifndef WX_PRECOMP | |
32 | #include "wx/utils.h" | |
33 | #include "wx/app.h" | |
34 | #include "wx/bitmap.h" | |
35 | #include "wx/icon.h" | |
36 | #include "wx/cursor.h" | |
37 | #include "wx/settings.h" | |
38 | #include "wx/intl.h" | |
39 | #endif | |
40 | ||
41 | #include "wx/module.h" | |
42 | #include "wx/image.h" | |
43 | #include "wx/msw/private.h" | |
44 | ||
45 | // define functions missing in MicroWin | |
46 | #ifdef __WXMICROWIN__ | |
47 | static inline void DestroyCursor(HCURSOR) { } | |
48 | static inline void SetCursor(HCURSOR) { } | |
49 | #endif // __WXMICROWIN__ | |
50 | ||
51 | // ---------------------------------------------------------------------------- | |
52 | // private classes | |
53 | // ---------------------------------------------------------------------------- | |
54 | ||
55 | class WXDLLEXPORT wxCursorRefData : public wxGDIImageRefData | |
56 | { | |
57 | public: | |
58 | // the second parameter is used to tell us to delete the cursor when we're | |
59 | // done with it (normally we shouldn't call DestroyCursor() this is why it | |
60 | // doesn't happen by default) | |
61 | wxCursorRefData(HCURSOR hcursor = 0, bool takeOwnership = false); | |
62 | ||
63 | virtual ~wxCursorRefData() { Free(); } | |
64 | ||
65 | virtual void Free(); | |
66 | ||
67 | ||
68 | // return the size of the standard cursor: notice that the system only | |
69 | // supports the cursors of this size | |
70 | static wxCoord GetStandardWidth(); | |
71 | static wxCoord GetStandardHeight(); | |
72 | ||
73 | private: | |
74 | bool m_destroyCursor; | |
75 | ||
76 | // standard cursor size, computed on first use | |
77 | static wxSize ms_sizeStd; | |
78 | }; | |
79 | ||
80 | // ---------------------------------------------------------------------------- | |
81 | // wxWin macros | |
82 | // ---------------------------------------------------------------------------- | |
83 | ||
84 | IMPLEMENT_DYNAMIC_CLASS(wxCursor, wxGDIObject) | |
85 | ||
86 | // ---------------------------------------------------------------------------- | |
87 | // globals | |
88 | // ---------------------------------------------------------------------------- | |
89 | ||
90 | // Current cursor, in order to hang on to cursor handle when setting the cursor | |
91 | // globally | |
92 | static wxCursor *gs_globalCursor = NULL; | |
93 | ||
94 | // ---------------------------------------------------------------------------- | |
95 | // private classes | |
96 | // ---------------------------------------------------------------------------- | |
97 | ||
98 | class wxCursorModule : public wxModule | |
99 | { | |
100 | public: | |
101 | virtual bool OnInit() | |
102 | { | |
103 | gs_globalCursor = new wxCursor; | |
104 | ||
105 | return TRUE; | |
106 | } | |
107 | ||
108 | virtual void OnExit() | |
109 | { | |
110 | delete gs_globalCursor; | |
111 | gs_globalCursor = (wxCursor *)NULL; | |
112 | } | |
113 | }; | |
114 | ||
115 | // ============================================================================ | |
116 | // implementation | |
117 | // ============================================================================ | |
118 | ||
119 | // ---------------------------------------------------------------------------- | |
120 | // wxCursorRefData | |
121 | // ---------------------------------------------------------------------------- | |
122 | ||
123 | wxSize wxCursorRefData::ms_sizeStd; | |
124 | ||
125 | wxCoord wxCursorRefData::GetStandardWidth() | |
126 | { | |
127 | if ( !ms_sizeStd.x ) | |
128 | ms_sizeStd.x = wxSystemSettings::GetMetric(wxSYS_CURSOR_X); | |
129 | ||
130 | return ms_sizeStd.x; | |
131 | } | |
132 | ||
133 | wxCoord wxCursorRefData::GetStandardHeight() | |
134 | { | |
135 | if ( !ms_sizeStd.y ) | |
136 | ms_sizeStd.y = wxSystemSettings::GetMetric(wxSYS_CURSOR_Y); | |
137 | ||
138 | return ms_sizeStd.y; | |
139 | } | |
140 | ||
141 | wxCursorRefData::wxCursorRefData(HCURSOR hcursor, bool destroy) | |
142 | { | |
143 | m_hCursor = (WXHCURSOR)hcursor; | |
144 | ||
145 | if ( m_hCursor ) | |
146 | { | |
147 | m_width = GetStandardWidth(); | |
148 | m_height = GetStandardHeight(); | |
149 | } | |
150 | ||
151 | m_destroyCursor = destroy; | |
152 | } | |
153 | ||
154 | void wxCursorRefData::Free() | |
155 | { | |
156 | if ( m_hCursor ) | |
157 | { | |
158 | #ifndef __WXWINCE__ | |
159 | if ( m_destroyCursor ) | |
160 | ::DestroyCursor((HCURSOR)m_hCursor); | |
161 | #endif | |
162 | ||
163 | m_hCursor = 0; | |
164 | } | |
165 | } | |
166 | ||
167 | // ---------------------------------------------------------------------------- | |
168 | // Cursors | |
169 | // ---------------------------------------------------------------------------- | |
170 | ||
171 | wxCursor::wxCursor() | |
172 | { | |
173 | } | |
174 | ||
175 | #if wxUSE_IMAGE | |
176 | wxCursor::wxCursor(const wxImage& image) | |
177 | { | |
178 | // image has to be of the standard cursor size, otherwise we won't be able | |
179 | // to create it | |
180 | const int w = wxCursorRefData::GetStandardWidth(); | |
181 | const int h = wxCursorRefData::GetStandardHeight(); | |
182 | ||
183 | const int hotSpotX = image.GetOptionInt(wxIMAGE_OPTION_CUR_HOTSPOT_X); | |
184 | const int hotSpotY = image.GetOptionInt(wxIMAGE_OPTION_CUR_HOTSPOT_Y); | |
185 | ||
186 | wxASSERT_MSG( hotSpotX >= 0 && hotSpotX < w && | |
187 | hotSpotY >= 0 && hotSpotY < h, | |
188 | _T("invalid cursor hot spot coordinates") ); | |
189 | ||
190 | HCURSOR hcursor = wxBitmapToHCURSOR | |
191 | ( | |
192 | wxBitmap(image.Scale(w, h)), | |
193 | hotSpotX, | |
194 | hotSpotY | |
195 | ); | |
196 | if ( !hcursor ) | |
197 | { | |
198 | wxLogWarning(_("Failed to create cursor.")); | |
199 | return; | |
200 | } | |
201 | ||
202 | m_refData = new wxCursorRefData(hcursor, true /* delete it later */); | |
203 | } | |
204 | #endif | |
205 | ||
206 | wxCursor::wxCursor(const char WXUNUSED(bits)[], | |
207 | int WXUNUSED(width), | |
208 | int WXUNUSED(height), | |
209 | int WXUNUSED(hotSpotX), int WXUNUSED(hotSpotY), | |
210 | const char WXUNUSED(maskBits)[]) | |
211 | { | |
212 | } | |
213 | ||
214 | // MicroWin doesn't have support needed for the other ctors | |
215 | #ifdef __WXMICROWIN__ | |
216 | ||
217 | wxCursor::wxCursor(const wxString& WXUNUSED(filename), | |
218 | long WXUNUSED(kind), | |
219 | int WXUNUSED(hotSpotX), | |
220 | int WXUNUSED(hotSpotY)) | |
221 | { | |
222 | } | |
223 | ||
224 | wxCursor::wxCursor(int WXUNUSED(cursor_type)) | |
225 | { | |
226 | } | |
227 | ||
228 | #else // !__WXMICROWIN__ | |
229 | ||
230 | wxCursor::wxCursor(const wxString& filename, | |
231 | long kind, | |
232 | int hotSpotX, | |
233 | int hotSpotY) | |
234 | { | |
235 | HCURSOR hcursor; | |
236 | switch ( kind ) | |
237 | { | |
238 | case wxBITMAP_TYPE_CUR_RESOURCE: | |
239 | hcursor = ::LoadCursor(wxGetInstance(), filename); | |
240 | break; | |
241 | ||
242 | #ifndef __WXWINCE__ | |
243 | case wxBITMAP_TYPE_CUR: | |
244 | hcursor = ::LoadCursorFromFile(filename); | |
245 | break; | |
246 | #endif | |
247 | ||
248 | case wxBITMAP_TYPE_ICO: | |
249 | hcursor = wxBitmapToHCURSOR | |
250 | ( | |
251 | wxIcon(filename, wxBITMAP_TYPE_ICO), | |
252 | hotSpotX, | |
253 | hotSpotY | |
254 | ); | |
255 | break; | |
256 | ||
257 | case wxBITMAP_TYPE_BMP: | |
258 | hcursor = wxBitmapToHCURSOR | |
259 | ( | |
260 | wxBitmap(filename, wxBITMAP_TYPE_BMP), | |
261 | hotSpotX, | |
262 | hotSpotY | |
263 | ); | |
264 | break; | |
265 | ||
266 | default: | |
267 | wxFAIL_MSG( _T("unknown cursor resource type") ); | |
268 | ||
269 | hcursor = NULL; | |
270 | } | |
271 | ||
272 | if ( hcursor ) | |
273 | { | |
274 | m_refData = new wxCursorRefData(hcursor, true /* delete it later */); | |
275 | } | |
276 | } | |
277 | ||
278 | // Cursors by stock number | |
279 | wxCursor::wxCursor(int idCursor) | |
280 | { | |
281 | // all wxWindows standard cursors | |
282 | static const struct StdCursor | |
283 | { | |
284 | // is this a standard Windows cursor? | |
285 | bool isStd; | |
286 | ||
287 | // the cursor name or id | |
288 | LPCTSTR name; | |
289 | } stdCursors[] = | |
290 | { | |
291 | { true, NULL }, // wxCURSOR_NONE | |
292 | { true, IDC_ARROW }, // wxCURSOR_ARROW | |
293 | { false, _T("WXCURSOR_RIGHT_ARROW") }, // wxCURSOR_RIGHT_ARROW | |
294 | { false, _T("WXCURSOR_BULLSEYE") }, // wxCURSOR_BULLSEYE | |
295 | { true, IDC_ARROW }, // WXCURSOR_CHAR | |
296 | { true, IDC_CROSS }, // WXCURSOR_CROSS | |
297 | { false, _T("WXCURSOR_HAND") }, // wxCURSOR_HAND | |
298 | { true, IDC_IBEAM }, // WXCURSOR_IBEAM | |
299 | { true, IDC_ARROW }, // WXCURSOR_LEFT_BUTTON | |
300 | { false, _T("WXCURSOR_MAGNIFIER") }, // wxCURSOR_MAGNIFIER | |
301 | { true, IDC_ARROW }, // WXCURSOR_MIDDLE_BUTTON | |
302 | { true, IDC_NO }, // WXCURSOR_NO_ENTRY | |
303 | { false, _T("WXCURSOR_PBRUSH") }, // wxCURSOR_PAINT_BRUSH | |
304 | { false, _T("WXCURSOR_PENCIL") }, // wxCURSOR_PENCIL | |
305 | { false, _T("WXCURSOR_PLEFT") }, // wxCURSOR_POINT_LEFT | |
306 | { false, _T("WXCURSOR_PRIGHT") }, // wxCURSOR_POINT_RIGHT | |
307 | { true, IDC_HELP }, // WXCURSOR_QUESTION_ARROW | |
308 | { true, IDC_ARROW }, // WXCURSOR_RIGHT_BUTTON | |
309 | { true, IDC_SIZENESW }, // WXCURSOR_SIZENESW | |
310 | { true, IDC_SIZENS }, // WXCURSOR_SIZENS | |
311 | { true, IDC_SIZENWSE }, // WXCURSOR_SIZENWSE | |
312 | { true, IDC_SIZEWE }, // WXCURSOR_SIZEWE | |
313 | { true, IDC_SIZEALL }, // WXCURSOR_SIZING | |
314 | { false, _T("WXCURSOR_PBRUSH") }, // wxCURSOR_SPRAYCAN | |
315 | { true, IDC_WAIT }, // WXCURSOR_WAIT | |
316 | { false, _T("WXCURSOR_WATCH") }, // WXCURSOR_WATCH | |
317 | { false, _T("WXCURSOR_BLANK") }, // wxCURSOR_BLANK | |
318 | { true, IDC_APPSTARTING }, // wxCURSOR_ARROWWAIT | |
319 | ||
320 | // no entry for wxCURSOR_MAX | |
321 | }; | |
322 | ||
323 | wxCOMPILE_TIME_ASSERT( WXSIZEOF(stdCursors) == wxCURSOR_MAX, | |
324 | CursorsIdArrayMismatch ); | |
325 | ||
326 | wxCHECK_RET( idCursor > 0 && (size_t)idCursor < WXSIZEOF(stdCursors), | |
327 | _T("invalid cursor id in wxCursor() ctor") ); | |
328 | ||
329 | const StdCursor& stdCursor = stdCursors[idCursor]; | |
330 | ||
331 | HCURSOR hcursor = ::LoadCursor(stdCursor.isStd ? NULL : wxGetInstance(), | |
332 | stdCursor.name); | |
333 | ||
334 | if ( !hcursor ) | |
335 | { | |
336 | wxLogLastError(_T("LoadCursor")); | |
337 | } | |
338 | else | |
339 | { | |
340 | m_refData = new wxCursorRefData(hcursor); | |
341 | } | |
342 | } | |
343 | ||
344 | #endif // __WXMICROWIN__/!__WXMICROWIN__ | |
345 | ||
346 | wxCursor::~wxCursor() | |
347 | { | |
348 | } | |
349 | ||
350 | // ---------------------------------------------------------------------------- | |
351 | // other wxCursor functions | |
352 | // ---------------------------------------------------------------------------- | |
353 | ||
354 | bool wxCursor::operator==(const wxCursor& cursor) const | |
355 | { | |
356 | if ( !m_refData ) | |
357 | return !cursor.m_refData; | |
358 | ||
359 | return cursor.m_refData && | |
360 | ((wxCursorRefData *)m_refData)->m_hCursor == | |
361 | ((wxCursorRefData *)cursor.m_refData)->m_hCursor; | |
362 | } | |
363 | ||
364 | wxGDIImageRefData *wxCursor::CreateData() const | |
365 | { | |
366 | return new wxCursorRefData; | |
367 | } | |
368 | ||
369 | // ---------------------------------------------------------------------------- | |
370 | // Global cursor setting | |
371 | // ---------------------------------------------------------------------------- | |
372 | ||
373 | const wxCursor *wxGetGlobalCursor() | |
374 | { | |
375 | return gs_globalCursor; | |
376 | } | |
377 | ||
378 | void wxSetCursor(const wxCursor& cursor) | |
379 | { | |
380 | if ( cursor.Ok() ) | |
381 | { | |
382 | ::SetCursor(GetHcursorOf(cursor)); | |
383 | ||
384 | if ( gs_globalCursor ) | |
385 | *gs_globalCursor = cursor; | |
386 | } | |
387 | } | |
388 | ||
389 |