|
428
|
1 /* Implements elisp-programmable dialog boxes -- MS Windows interface.
|
|
|
2 Copyright (C) 1998 Kirill M. Katsnelson <kkm@kis.ru>
|
|
|
3
|
|
|
4 This file is part of XEmacs.
|
|
|
5
|
|
|
6 XEmacs is free software; you can redistribute it and/or modify it
|
|
|
7 under the terms of the GNU General Public License as published by the
|
|
|
8 Free Software Foundation; either version 2, or (at your option) any
|
|
|
9 later version.
|
|
|
10
|
|
|
11 XEmacs is distributed in the hope that it will be useful, but WITHOUT
|
|
|
12 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
|
|
13 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
|
|
|
14 for more details.
|
|
|
15
|
|
|
16 You should have received a copy of the GNU General Public License
|
|
|
17 along with XEmacs; see the file COPYING. If not, write to
|
|
|
18 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
|
|
|
19 Boston, MA 02111-1307, USA. */
|
|
|
20
|
|
|
21 /* Synched up with: Not in FSF. */
|
|
|
22
|
|
|
23 /* Author:
|
|
|
24 Initially written by kkm, May 1998
|
|
|
25 */
|
|
|
26
|
|
|
27 #include <config.h>
|
|
|
28 #include "lisp.h"
|
|
|
29
|
|
|
30 #include "buffer.h"
|
|
|
31 #include "console-msw.h"
|
|
|
32 #include "frame.h"
|
|
|
33 #include "gui.h"
|
|
|
34 #include "opaque.h"
|
|
|
35
|
|
|
36 /* List containing all dialog data structures of currently popped up
|
|
|
37 dialogs. Each item is a cons of frame object and a vector of
|
|
|
38 callbacks for buttons in the dialog, in order */
|
|
|
39 static Lisp_Object Vdialog_data_list;
|
|
|
40
|
|
|
41 /* DLUs per character metrics */
|
|
|
42 #define X_DLU_PER_CHAR 4
|
|
|
43 #define Y_DLU_PER_CHAR 8
|
|
|
44
|
|
|
45 /*
|
|
|
46 Button metrics
|
|
|
47 --------------
|
|
|
48 All buttons have height of 15 DLU. The minimum width for a button is 32 DLU,
|
|
|
49 but it can be expanded to accommodate its text, so the width is calculated as
|
|
|
50 8 DLU per button plus 4 DLU per character.
|
|
|
51 max (32, 6 * text_length). The factor of six is rather empirical, but it
|
|
|
52 works better than 8 which comes from the definition of a DLU. Buttons are
|
|
|
53 spaced with 6 DLU gap. Minimum distance from the button to the left or right
|
|
|
54 dialog edges is 6 DLU, and the distance between the dialog bottom edge and
|
|
|
55 buttons is 7 DLU.
|
|
|
56 */
|
|
|
57
|
|
|
58 #define X_MIN_BUTTON 32
|
|
|
59 #define X_BUTTON_MARGIN 8
|
|
|
60 #define Y_BUTTON 15
|
|
|
61 #define X_BUTTON_SPACING 6
|
|
|
62 #define X_BUTTON_FROM_EDGE 6
|
|
|
63 #define Y_BUTTON_FROM_EDGE 7
|
|
|
64
|
|
|
65 /*
|
|
|
66 Text field metrics
|
|
|
67 ------------------
|
|
|
68 Text distance from left and right edges is the same as for buttons, and the
|
|
|
69 top margin is 11 DLU. The static control has height of 2 DLU per control
|
|
|
70 plus 8 DLU per each line of text. Distance between the bottom edge of the
|
|
|
71 control and the button row is 15 DLU. Minimum width of the static control
|
|
|
72 is 100 DLU, thus giving minimum dialog weight of 112 DLU. Maximum width is
|
|
|
73 300 DLU, and, if the text is wider than that, the text is wrapped on the
|
|
|
74 next line. Each character in the text is considered 4 DLU wide.
|
|
|
75 */
|
|
|
76
|
|
|
77 #define X_MIN_TEXT 100
|
|
|
78 #define X_AVE_TEXT 200
|
|
|
79 #define X_MAX_TEXT 300
|
|
|
80 #define X_TEXT_FROM_EDGE X_BUTTON_FROM_EDGE
|
|
|
81 #define Y_TEXT_FROM_EDGE 11
|
|
|
82 #define Y_TEXT_MARGIN 2
|
|
|
83 #define Y_TEXT_FROM_BUTTON 15
|
|
|
84
|
|
|
85 #define X_MIN_TEXT_CHAR (X_MIN_TEXT / X_DLU_PER_CHAR)
|
|
|
86 #define X_AVE_TEXT_CHAR (X_AVE_TEXT / X_DLU_PER_CHAR)
|
|
|
87 #define X_MAX_TEXT_CHAR (X_MAX_TEXT / X_DLU_PER_CHAR)
|
|
|
88
|
|
|
89 /*
|
|
|
90 Layout algorithm
|
|
|
91 ----------------
|
|
|
92 First we calculate the minimum width of the button row, excluding "from
|
|
|
93 edge" distances. Note that the static control text can be narrower than
|
|
|
94 X_AVE_TEXT only if both text and button row are narrower than that (so,
|
|
|
95 even if text *can* be wrapped into 2 rows narrower than ave width, it is not
|
|
|
96 done). Let WBR denote the width of the button row.
|
|
|
97
|
|
|
98 Next, the width of the static field is determined.
|
|
|
99 First, if all lines of text fit into max (WBR, X_MAX_TEXT), the width of the
|
|
|
100 control is the same as the width of the longest line.
|
|
|
101 Second, if all lines of text are narrower than X_MIN_TEXT, then width of
|
|
|
102 the control is set to X_MIN_TEXT.
|
|
|
103 Otherwise, width is set to max(WBR, X_AVE_TEXT). In this case, line wrapping will
|
|
|
104 happen.
|
|
|
105
|
|
|
106 If width of the text control is larger than that of the button row, then the
|
|
|
107 latter is centered across the dialog, by giving it extra edge
|
|
|
108 margins. Otherwise, minimal margins are given to the button row.
|
|
|
109 */
|
|
|
110
|
|
|
111 #define ID_ITEM_BIAS 32
|
|
|
112
|
|
|
113 /* Dialog procedure */
|
|
|
114 static BOOL CALLBACK
|
|
|
115 dialog_proc (HWND hwnd, UINT msg, WPARAM w_param, LPARAM l_param)
|
|
|
116 {
|
|
|
117 switch (msg)
|
|
|
118 {
|
|
|
119 case WM_INITDIALOG:
|
|
|
120 SetWindowLong (hwnd, DWL_USER, l_param);
|
|
|
121 break;
|
|
|
122
|
|
|
123 case WM_DESTROY:
|
|
|
124 {
|
|
|
125 Lisp_Object data;
|
|
|
126 VOID_TO_LISP (data, GetWindowLong (hwnd, DWL_USER));
|
|
|
127 Vdialog_data_list = delq_no_quit (data, Vdialog_data_list);
|
|
|
128 }
|
|
|
129 break;
|
|
|
130
|
|
|
131 case WM_COMMAND:
|
|
|
132 {
|
|
|
133 Lisp_Object fn, arg, data;
|
|
|
134 VOID_TO_LISP (data, GetWindowLong (hwnd, DWL_USER));
|
|
|
135
|
|
|
136 assert (w_param >= ID_ITEM_BIAS
|
|
|
137 && w_param < XVECTOR_LENGTH (XCDR (data)) + ID_ITEM_BIAS);
|
|
|
138
|
|
|
139 get_gui_callback (XVECTOR_DATA (XCDR (data)) [w_param - ID_ITEM_BIAS],
|
|
|
140 &fn, &arg);
|
|
|
141 mswindows_enqueue_misc_user_event (XCAR (data), fn, arg);
|
|
|
142
|
|
|
143 DestroyWindow (hwnd);
|
|
|
144 }
|
|
|
145 break;
|
|
|
146
|
|
|
147 default:
|
|
|
148 return FALSE;
|
|
|
149 }
|
|
|
150 return TRUE;
|
|
|
151 }
|
|
|
152
|
|
|
153 /* Helper function which converts the supplied string STRING into Unicode and
|
|
|
154 pushes it at the end of DYNARR */
|
|
|
155 static void
|
|
|
156 push_lisp_string_as_unicode (unsigned_char_dynarr* dynarr, Lisp_Object string)
|
|
|
157 {
|
|
|
158 Extbyte *mbcs_string;
|
|
|
159 Charcount length = XSTRING_CHAR_LENGTH (string);
|
|
|
160 LPWSTR uni_string;
|
|
|
161
|
|
440
|
162 TO_EXTERNAL_FORMAT (LISP_STRING, string,
|
|
|
163 C_STRING_ALLOCA, mbcs_string,
|
|
|
164 Qnative);
|
|
428
|
165 uni_string = alloca_array (WCHAR, length + 1);
|
|
|
166 length = MultiByteToWideChar (CP_ACP, 0, mbcs_string, -1,
|
|
|
167 uni_string, sizeof(WCHAR) * (length + 1));
|
|
|
168 Dynarr_add_many (dynarr, uni_string, sizeof(WCHAR) * length);
|
|
|
169 }
|
|
|
170
|
|
|
171 /* Given button TEXT, return button width in DLU */
|
|
|
172 static unsigned int
|
|
|
173 button_width (Lisp_Object text)
|
|
|
174 {
|
|
|
175 unsigned int width = X_DLU_PER_CHAR * XSTRING_CHAR_LENGTH (text);
|
|
|
176 return max (X_MIN_BUTTON, width);
|
|
|
177 }
|
|
|
178
|
|
|
179 /* Unwind protection routine frees a dynarr opaqued into arg */
|
|
|
180 static Lisp_Object
|
|
|
181 free_dynarr_opaque_ptr (Lisp_Object arg)
|
|
|
182 {
|
|
|
183 Dynarr_free (get_opaque_ptr (arg));
|
|
|
184 return arg;
|
|
|
185 }
|
|
|
186
|
|
|
187
|
|
|
188 #define ALIGN_TEMPLATE \
|
|
|
189 { \
|
|
|
190 unsigned int slippage = Dynarr_length (template) & 3; \
|
|
|
191 if (slippage) \
|
|
|
192 Dynarr_add_many (template, &zeroes, slippage); \
|
|
|
193 }
|
|
|
194
|
|
|
195 static void
|
|
|
196 mswindows_popup_dialog_box (struct frame* f, Lisp_Object desc)
|
|
|
197 {
|
|
|
198 Lisp_Object_dynarr *dialog_items = Dynarr_new (Lisp_Object);
|
|
|
199 unsigned_char_dynarr *template = Dynarr_new (unsigned_char);
|
|
|
200 unsigned int button_row_width = 0;
|
|
|
201 unsigned int text_width, text_height;
|
|
|
202
|
|
|
203 int unbind_count = specpdl_depth ();
|
|
|
204 record_unwind_protect (free_dynarr_opaque_ptr,
|
|
|
205 make_opaque_ptr (dialog_items));
|
|
|
206 record_unwind_protect (free_dynarr_opaque_ptr,
|
|
|
207 make_opaque_ptr (template));
|
|
|
208
|
|
|
209 /* A big NO NEED to GCPRO gui_items stored in the array: they are just
|
|
|
210 pointers into DESC list, which is GC-protected by the caller */
|
|
|
211
|
|
|
212 /* Parse each item in the dialog into gui_item structs, and stuff a dynarr
|
|
|
213 of these. Calculate button row width in this loop too */
|
|
|
214 {
|
|
|
215 Lisp_Object item_cons;
|
|
|
216
|
|
|
217 EXTERNAL_LIST_LOOP (item_cons, XCDR (desc))
|
|
|
218 {
|
|
|
219 if (!NILP (XCAR (item_cons)))
|
|
|
220 {
|
|
|
221 Lisp_Object gitem = gui_parse_item_keywords (XCAR (item_cons));
|
|
|
222 Dynarr_add (dialog_items, gitem);
|
|
|
223 button_row_width += button_width (XGUI_ITEM (gitem)->name)
|
|
|
224 + X_BUTTON_MARGIN;
|
|
|
225 }
|
|
|
226 }
|
|
|
227 if (Dynarr_length (dialog_items) == 0)
|
|
|
228 signal_simple_error ("Dialog descriptor provides no active items", desc);
|
|
|
229 button_row_width -= X_BUTTON_MARGIN;
|
|
|
230 }
|
|
|
231
|
|
|
232 /* Determine the final width layout */
|
|
|
233 {
|
|
|
234 Bufbyte *p = XSTRING_DATA (XCAR (desc));
|
|
|
235 Charcount string_max = 0, this_length = 0;
|
|
|
236 while (1)
|
|
|
237 {
|
|
|
238 Emchar ch = charptr_emchar (p);
|
|
|
239 INC_CHARPTR (p);
|
|
|
240
|
|
|
241 if (ch == (Emchar)'\n' || ch == (Emchar)'\0')
|
|
|
242 {
|
|
|
243 string_max = max (this_length, string_max);
|
|
|
244 this_length = 0;
|
|
|
245 }
|
|
|
246 else
|
|
|
247 ++this_length;
|
|
|
248
|
|
|
249 if (ch == (Emchar)'\0')
|
|
|
250 break;
|
|
|
251 }
|
|
|
252
|
|
|
253 if (string_max * X_DLU_PER_CHAR > max (X_MAX_TEXT, button_row_width))
|
|
|
254 text_width = X_AVE_TEXT;
|
|
|
255 else if (string_max * X_DLU_PER_CHAR < X_MIN_TEXT)
|
|
|
256 text_width = X_MIN_TEXT;
|
|
|
257 else
|
|
|
258 text_width = string_max * X_DLU_PER_CHAR;
|
|
|
259 text_width = max (text_width, button_row_width);
|
|
|
260 }
|
|
|
261
|
|
|
262 /* Now calculate the height for the text control */
|
|
|
263 {
|
|
|
264 Bufbyte *p = XSTRING_DATA (XCAR (desc));
|
|
|
265 Charcount break_at = text_width / X_DLU_PER_CHAR;
|
|
|
266 Charcount char_pos = 0;
|
|
|
267 int num_lines = 1;
|
|
|
268 Emchar ch;
|
|
|
269
|
|
|
270 while ((ch = charptr_emchar (p)) != (Emchar)'\0')
|
|
|
271 {
|
|
|
272 INC_CHARPTR (p);
|
|
|
273 char_pos += ch != (Emchar)'\n';
|
|
|
274 if (ch == (Emchar)'\n' || char_pos == break_at)
|
|
|
275 {
|
|
|
276 ++num_lines;
|
|
|
277 char_pos = 0;
|
|
|
278 }
|
|
|
279 }
|
|
|
280 text_height = Y_TEXT_MARGIN + Y_DLU_PER_CHAR * num_lines;
|
|
|
281 }
|
|
|
282
|
|
|
283 /* Ok, now we are ready to stuff the dialog template and lay out controls */
|
|
|
284 {
|
|
|
285 DLGTEMPLATE dlg_tem;
|
|
|
286 DLGITEMTEMPLATE item_tem;
|
|
|
287 int i;
|
|
|
288 const unsigned int zeroes = 0;
|
|
|
289 const unsigned int ones = 0xFFFFFFFF;
|
|
|
290 const WORD static_class_id = 0x0082;
|
|
|
291 const WORD button_class_id = 0x0080;
|
|
|
292
|
|
|
293 /* Create and stuff in DLGTEMPLATE header */
|
|
|
294 dlg_tem.style = (DS_CENTER | DS_MODALFRAME | DS_SETFONT
|
|
|
295 | WS_CAPTION | WS_POPUP | WS_VISIBLE);
|
|
|
296 dlg_tem.dwExtendedStyle = 0;
|
|
|
297 dlg_tem.cdit = Dynarr_length (dialog_items) + 1;
|
|
|
298 dlg_tem.x = 0;
|
|
|
299 dlg_tem.y = 0;
|
|
|
300 dlg_tem.cx = text_width + 2 * X_TEXT_FROM_EDGE;
|
|
|
301 dlg_tem.cy = (Y_TEXT_FROM_EDGE + text_height + Y_TEXT_FROM_BUTTON
|
|
|
302 + Y_BUTTON + Y_BUTTON_FROM_EDGE);
|
|
|
303 Dynarr_add_many (template, &dlg_tem, sizeof (dlg_tem));
|
|
|
304
|
|
|
305 /* We want no menu and standard class */
|
|
|
306 Dynarr_add_many (template, &zeroes, 4);
|
|
|
307
|
|
|
308 /* And the third is the dialog title. "XEmacs" as long as we do not supply
|
|
|
309 one in descriptor. Note that the string must be in Unicode. */
|
|
|
310 Dynarr_add_many (template, L"XEmacs", 14);
|
|
|
311
|
|
|
312 /* We want standard dialog font */
|
|
|
313 Dynarr_add_many (template, L"\x08MS Shell Dlg", 28);
|
|
|
314
|
|
|
315 /* Next add text control. */
|
|
|
316 item_tem.style = WS_CHILD | WS_VISIBLE | SS_LEFT | SS_NOPREFIX;
|
|
|
317 item_tem.dwExtendedStyle = 0;
|
|
|
318 item_tem.x = X_TEXT_FROM_EDGE;
|
|
|
319 item_tem.y = Y_TEXT_FROM_EDGE;
|
|
|
320 item_tem.cx = text_width;
|
|
|
321 item_tem.cy = text_height;
|
|
|
322 item_tem.id = 0xFFFF;
|
|
|
323
|
|
|
324 ALIGN_TEMPLATE;
|
|
|
325 Dynarr_add_many (template, &item_tem, sizeof (item_tem));
|
|
|
326
|
|
|
327 /* Right after class id follows */
|
|
|
328 Dynarr_add_many (template, &ones, 2);
|
|
|
329 Dynarr_add_many (template, &static_class_id, sizeof (static_class_id));
|
|
|
330
|
|
|
331 /* Next thing to add is control text, as Unicode string */
|
|
|
332 push_lisp_string_as_unicode (template, XCAR (desc));
|
|
|
333
|
|
|
334 /* Specify 0 length creation data */
|
|
|
335 Dynarr_add_many (template, &zeroes, 2);
|
|
|
336
|
|
|
337 /* Now it's the button time */
|
|
|
338 item_tem.y = Y_TEXT_FROM_EDGE + text_height + Y_TEXT_FROM_BUTTON;
|
|
|
339 item_tem.x = X_BUTTON_FROM_EDGE + (button_row_width < text_width
|
|
|
340 ? (text_width - button_row_width) / 2
|
|
|
341 : 0);
|
|
|
342 item_tem.cy = Y_BUTTON;
|
|
|
343 item_tem.dwExtendedStyle = 0;
|
|
|
344
|
|
|
345 for (i = 0; i < Dynarr_length (dialog_items); ++i)
|
|
|
346 {
|
|
|
347 Lisp_Object* gui_item = Dynarr_atp (dialog_items, i);
|
|
440
|
348 Lisp_Gui_Item *pgui_item = XGUI_ITEM (*gui_item);
|
|
428
|
349
|
|
|
350 item_tem.style = (WS_CHILD | WS_VISIBLE | WS_TABSTOP | BS_PUSHBUTTON
|
|
|
351 | (gui_item_active_p (*gui_item) ? 0 : WS_DISABLED));
|
|
|
352 item_tem.cx = button_width (pgui_item->name);
|
|
|
353 /* Item ids are indices into dialog_items plus offset, to avoid having
|
|
|
354 items by reserved ids (IDOK, IDCANCEL) */
|
|
|
355 item_tem.id = i + ID_ITEM_BIAS;
|
|
|
356
|
|
|
357 ALIGN_TEMPLATE;
|
|
|
358 Dynarr_add_many (template, &item_tem, sizeof (item_tem));
|
|
|
359
|
|
|
360 /* Right after 0xFFFF and class id atom follows */
|
|
|
361 Dynarr_add_many (template, &ones, 2);
|
|
|
362 Dynarr_add_many (template, &button_class_id, sizeof (button_class_id));
|
|
|
363
|
|
|
364 /* Next thing to add is control text, as Unicode string */
|
|
|
365 push_lisp_string_as_unicode (template, pgui_item->name);
|
|
|
366
|
|
|
367 /* Specify 0 length creation data. */
|
|
|
368 Dynarr_add_many (template, &zeroes, 2);
|
|
|
369
|
|
|
370 item_tem.x += item_tem.cx + X_BUTTON_SPACING;
|
|
|
371 }
|
|
|
372 }
|
|
|
373
|
|
|
374 /* Now the Windows dialog structure is ready. We need to prepare a
|
|
|
375 data structure for the new dialog, which will contain callbacks
|
|
|
376 and the frame for these callbacks. This structure has to be
|
|
|
377 GC-protected. The data structure itself is a cons of frame object
|
|
|
378 and a vector of callbacks; for the protection reasons it is put
|
|
|
379 into a statically protected list. */
|
|
|
380 {
|
|
|
381 Lisp_Object frame, vector, dialog_data;
|
|
|
382 int i;
|
|
|
383
|
|
|
384 XSETFRAME (frame, f);
|
|
|
385 vector = make_vector (Dynarr_length (dialog_items), Qunbound);
|
|
|
386 dialog_data = Fcons (frame, vector);
|
|
|
387 for (i = 0; i < Dynarr_length (dialog_items); i++)
|
|
|
388 XVECTOR_DATA (vector) [i] = XGUI_ITEM (*Dynarr_atp (dialog_items, i))->callback;
|
|
|
389
|
|
|
390 /* Woof! Everything is ready. Pop pop pop in now! */
|
|
|
391 if (!CreateDialogIndirectParam (NULL,
|
|
|
392 (LPDLGTEMPLATE) Dynarr_atp (template, 0),
|
|
|
393 FRAME_MSWINDOWS_HANDLE (f), dialog_proc,
|
|
|
394 (LPARAM) LISP_TO_VOID (dialog_data)))
|
|
|
395 /* Something went wrong creating the dialog */
|
|
|
396 signal_simple_error ("System error creating dialog", desc);
|
|
|
397
|
|
|
398 Vdialog_data_list = Fcons (dialog_data, Vdialog_data_list);
|
|
|
399 }
|
|
|
400
|
|
|
401 /* Cease protection and free dynarrays */
|
|
|
402 unbind_to (unbind_count, Qnil);
|
|
|
403 }
|
|
|
404
|
|
|
405 void
|
|
|
406 console_type_create_dialog_mswindows (void)
|
|
|
407 {
|
|
|
408 CONSOLE_HAS_METHOD (mswindows, popup_dialog_box);
|
|
|
409 }
|
|
|
410
|
|
|
411 void
|
|
|
412 vars_of_dialog_mswindows (void)
|
|
|
413 {
|
|
|
414 Vdialog_data_list = Qnil;
|
|
|
415 staticpro (&Vdialog_data_list);
|
|
|
416 }
|
