1 /* m17n-gui.c -- body of the GUI API.
2 Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012
3 National Institute of Advanced Industrial Science and Technology (AIST)
4 Registration Number H15PRO112
5
6 This file is part of the m17n library.
7
8 The m17n library is free software; you can redistribute it and/or
9 modify it under the terms of the GNU Lesser General Public License
10 as published by the Free Software Foundation; either version 2.1 of
11 the License, or (at your option) any later version.
12
13 The m17n library is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 Lesser General Public License for more details.
17
18 You should have received a copy of the GNU Lesser General Public
19 License along with the m17n library; if not, write to the Free
20 Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
21 Boston, MA 02110-1301 USA. */
22
23 /***en
24 @addtogroup m17nGUI
25 @brief GUI support for a window system.
26
27 This section defines the m17n GUI API concerning M-text drawing
28 and inputting under a window system.
29
30 All the definitions here are independent of window systems. An
31 actual library file, however, can depend on a specific window
32 system. For instance, the library file m17n-X.so is an example of
33 implementation of the m17n GUI API for the X Window System.
34
35 Actually the GUI API is mainly for toolkit libraries or to
36 implement XOM, not for direct use from application programs.
37 */
38
39 /***ja
40 @addtogroup m17nGUI
41 @brief ������ɥ������ƥ��� GUI ���ݡ���.
42
43 ���Υ��������ϥ�����ɥ������ƥ�Τ�ȤǤ� M-text ��ɽ�������Ϥˤ������
44 m17n GUI API ��������롣
45
46 �����ǤΤ��٤Ƥ�����ϥ�����ɥ������ƥ�Ȥ���Ω�Ǥ��롣
47 ���������ºݤΥ饤�֥��ե�����ϸ��̤Υ�����ɥ������ƥ�˰�¸�����礬���롣
48 ���Ȥ��Х饤�֥��ե����� m17n-X.so �ϡ�m17n GUI API �� X
49 ������ɥ��Ѥμ�����Ǥ��롣
50
51 ���¤ˤϡ�GUI API �ϼ�˥ġ��륭�åȥ饤�֥������Ǥ��뤫���ޤ���
52 XOM ��������뤿����Ѥ����Ƥ��ꡢ���ץꥱ�������ץ���फ���ľ�ܤ����Ѥ�ǰƬ�ˤ�������ΤǤϤʤ���
53 */
54
55 /*=*/
56
57 #if !defined (FOR_DOXYGEN) || defined (DOXYGEN_INTERNAL_MODULE)
58 /*** @addtogroup m17nInternal
59 @{ */
60
61 #include "config.h"
62
63 #include <stdio.h>
64 #include <string.h>
65 #include <stdlib.h>
66
67 #include "config.h"
68 #ifdef HAVE_DLFCN_H
69 #include <dlfcn.h>
70 #endif
71
72 #include "m17n-gui.h"
73 #include "m17n-misc.h"
74 #include "internal.h"
75 #include "plist.h"
76 #include "internal-gui.h"
77 #include "font.h"
78 #include "fontset.h"
79 #include "face.h"
80
81 #ifndef DLOPEN_SHLIB_EXT
82 #define DLOPEN_SHLIB_EXT ".so"
83 #endif
84
85 /** Information about a dynamic library supporting a specific graphic
86 device. */
87 typedef struct
88 {
89 /** Name of the dynamic library (e.g. "libm17n-X.so"). */
90 char *library;
91 /** Handle of the dynamic library. */
92 void *handle;
93 /** Function to call just after loading the library. */
94 int (*init) ();
95 /** Function to call to open a frame on the graphic device. */
96 int (*open) (MFrame *frame, MPlist *param);
97 /** Function to call just before unloading the library. */
98 int (*fini) ();
99 } MDeviceLibraryInterface;
100
101
102 /** Plist of device symbol vs MDeviceLibraryInterface. */
103
104 static MPlist *device_library_list;
105
106 /** Close MFrame and free it. */
107
108 static void
free_frame(void * object)109 free_frame (void *object)
110 {
111 MFrame *frame = (MFrame *) object;
112
113 (*frame->driver->close) (frame);
114 M17N_OBJECT_UNREF (frame->face);
115 M17N_OBJECT_UNREF (frame->font_driver_list);
116 free (object);
117 }
118
119
120 /** Register a dynamic library of name LIB by a key NAME. */
121
122 static int
register_device_library(MSymbol name,char * lib)123 register_device_library (MSymbol name, char *lib)
124 {
125 MDeviceLibraryInterface *interface;
126
127 MSTRUCT_CALLOC (interface, MERROR_WIN);
128 interface->library = malloc (strlen (M17N_MODULE_DIR) + 1
129 + strlen (lib)
130 + strlen (DLOPEN_SHLIB_EXT) + 1);
131 sprintf (interface->library, "%s/%s%s", M17N_MODULE_DIR, lib,
132 DLOPEN_SHLIB_EXT);
133 if (! device_library_list)
134 device_library_list = mplist ();
135 mplist_add (device_library_list, name, interface);
136 return 0;
137 }
138
139
140 #ifdef HAVE_FREETYPE
141 /** Null device support. */
142
143 static struct {
144 MPlist *realized_fontset_list;
145 MPlist *realized_font_list;
146 MPlist *realized_face_list;
147 } null_device;
148
149 static void
null_device_close(MFrame * frame)150 null_device_close (MFrame *frame)
151 {
152 }
153
154 static void *
null_device_get_prop(MFrame * frame,MSymbol key)155 null_device_get_prop (MFrame *frame, MSymbol key)
156 {
157 return NULL;
158 }
159
160 static void
null_device_realize_face(MRealizedFace * rface)161 null_device_realize_face (MRealizedFace *rface)
162 {
163 rface->info = NULL;
164 }
165
166 static void
null_device_free_realized_face(MRealizedFace * rface)167 null_device_free_realized_face (MRealizedFace *rface)
168 {
169 }
170
171 static MDeviceDriver null_driver =
172 {
173 null_device_close,
174 null_device_get_prop,
175 null_device_realize_face,
176 null_device_free_realized_face
177 };
178
179 static int
null_device_init()180 null_device_init ()
181 {
182 null_device.realized_fontset_list = mplist ();
183 null_device.realized_font_list = mplist ();
184 null_device.realized_face_list = mplist ();
185 return 0;
186 }
187
188 static int
null_device_fini()189 null_device_fini ()
190 {
191 MPlist *plist;
192
193 MPLIST_DO (plist, null_device.realized_fontset_list)
194 mfont__free_realized_fontset ((MRealizedFontset *) MPLIST_VAL (plist));
195 M17N_OBJECT_UNREF (null_device.realized_fontset_list);
196
197 MPLIST_DO (plist, null_device.realized_face_list)
198 mface__free_realized ((MRealizedFace *) MPLIST_VAL (plist));
199 M17N_OBJECT_UNREF (null_device.realized_face_list);
200
201 if (MPLIST_VAL (null_device.realized_font_list))
202 mfont__free_realized (MPLIST_VAL (null_device.realized_font_list));
203 M17N_OBJECT_UNREF (null_device.realized_font_list);
204 return 0;
205 }
206
207 static int
null_device_open(MFrame * frame,MPlist * param)208 null_device_open (MFrame *frame, MPlist *param)
209 {
210 MFace *face;
211
212 frame->device = NULL;
213 frame->device_type = 0;
214 frame->dpi = (int) mplist_get (param, Mresolution);
215 if (frame->dpi == 0)
216 frame->dpi = 100;
217 frame->driver = &null_driver;
218 frame->font_driver_list = mplist ();
219 mplist_add (frame->font_driver_list, Mfreetype, &mfont__ft_driver);
220 frame->realized_font_list = null_device.realized_font_list;
221 frame->realized_face_list = null_device.realized_face_list;
222 frame->realized_fontset_list = null_device.realized_fontset_list;
223 face = mface_copy (mface__default);
224 mplist_push (param, Mface, face);
225 M17N_OBJECT_UNREF (face);
226 return 0;
227 }
228
229 static MDeviceLibraryInterface null_interface =
230 { NULL, NULL, null_device_init, null_device_open, null_device_fini };
231
232 #endif
233
234 /* Internal API */
235
236
237 /* External API */
238
239 void
m17n_init_win(void)240 m17n_init_win (void)
241 {
242 int mdebug_flag = MDEBUG_INIT;
243
244 merror_code = MERROR_NONE;
245 if (m17n__gui_initialized++)
246 return;
247 m17n_init ();
248 m17n_init_flt ();
249 if (merror_code != MERROR_NONE)
250 {
251 m17n__gui_initialized--;
252 return;
253 }
254
255 MDEBUG_PUSH_TIME ();
256
257 Mgd = msymbol ("gd");
258
259 Mfont = msymbol ("font");
260 Mfont_width = msymbol ("font-width");
261 Mfont_ascent = msymbol ("font-ascent");
262 Mfont_descent = msymbol ("font-descent");
263 Mdevice = msymbol ("device");
264
265 Mdisplay = msymbol ("display");
266 Mscreen = msymbol ("screen");
267 Mdrawable = msymbol ("drawable");
268 Mdepth = msymbol ("depth");
269 Mwidget = msymbol ("widget");
270 Mcolormap = msymbol ("colormap");
271
272 MDEBUG_PUSH_TIME ();
273 if (mfont__init () < 0)
274 goto err;
275 MDEBUG_PRINT_TIME ("INIT", (mdebug__output, " to initialize font module."));
276 if (mfont__fontset_init () < 0)
277 goto err;
278 MDEBUG_PRINT_TIME ("INIT", (mdebug__output, " to initialize fontset module."));
279 if (mface__init () < 0)
280 goto err;
281 MDEBUG_PRINT_TIME ("INIT", (mdebug__output, " to initialize face module."));
282 if (mdraw__init () < 0)
283 goto err;
284 MDEBUG_PRINT_TIME ("INIT", (mdebug__output, " to initialize draw module."));
285 if (minput__win_init () < 0)
286 goto err;
287 MDEBUG_PRINT_TIME ("INIT",
288 (mdebug__output, " to initialize input-win module."));
289 mframe_default = NULL;
290
291 register_device_library (Mx, "libm17n-X");
292 register_device_library (Mgd, "libm17n-gd");
293 return;
294
295 err:
296 MDEBUG_POP_TIME ();
297 MDEBUG_PRINT_TIME ("INIT",
298 (mdebug__output, " to initialize the m17n GUI module."));
299 MDEBUG_POP_TIME ();
300 }
301
302 void
m17n_fini_win(void)303 m17n_fini_win (void)
304 {
305 int mdebug_flag = MDEBUG_FINI;
306 MPlist *plist;
307
308 if (m17n__gui_initialized == 0
309 || --m17n__gui_initialized > 0)
310 return;
311
312 MDEBUG_PUSH_TIME ();
313 MDEBUG_PUSH_TIME ();
314 MDEBUG_PRINT_TIME ("FINI", (mdebug__output, " to finalize device modules."));
315 MPLIST_DO (plist, device_library_list)
316 {
317 MDeviceLibraryInterface *interface = MPLIST_VAL (plist);
318
319 if (interface->handle && interface->fini)
320 {
321 (*interface->fini) ();
322 dlclose (interface->handle);
323 }
324 free (interface->library);
325 free (interface);
326 }
327 #ifdef HAVE_FREETYPE
328 if (null_interface.handle)
329 {
330 (*null_interface.fini) ();
331 null_interface.handle = NULL;
332 }
333 #endif /* not HAVE_FREETYPE */
334 M17N_OBJECT_UNREF (device_library_list);
335 minput__win_fini ();
336 MDEBUG_PRINT_TIME ("FINI",
337 (mdebug__output, " to finalize input-gui module."));
338 mdraw__fini ();
339 MDEBUG_PRINT_TIME ("FINI", (mdebug__output, " to finalize draw module."));
340 mface__fini ();
341 MDEBUG_PRINT_TIME ("FINI", (mdebug__output, " to finalize face module."));
342 mfont__fontset_fini ();
343 MDEBUG_PRINT_TIME ("FINI", (mdebug__output, " to finalize fontset module."));
344 mfont__fini ();
345 MDEBUG_PRINT_TIME ("FINI", (mdebug__output, " to finalize font module."));
346 mframe_default = NULL;
347 MDEBUG_POP_TIME ();
348 MDEBUG_PRINT_TIME ("FINI", (mdebug__output, " to finalize the gui modules."));
349 MDEBUG_POP_TIME ();
350 m17n_fini_flt ();
351 m17n_fini ();
352 }
353
354 /*** @} */
355 #endif /* !FOR_DOXYGEN || DOXYGEN_INTERNAL_MODULE */
356
357 /*** @addtogroup m17nFrame */
358 /***en
359 @brief A @e frame is an object corresponding to the graphic device.
360
361 A @e frame is an object of the type #MFrame to hold various
362 information about each display/input device. Almost all m17n GUI
363 functions require a pointer to a frame as an argument. */
364 /***ja
365 @brief @e �ե졼�� �Ȥϥ���ե��å��ǥХ������б����륪�֥������ȤǤ���.
366
367 @e �ե졼�� �Ȥ� #MFrame
368 ���Υ��֥������ȤǤ��ꡢ�ġ���ɽ�������ϥǥХ����ξ�����Ǽ���뤿����Ѥ����롣
369 �ۤȤ�ɤ��٤Ƥ� m17n GUI�ؿ��ϡ������Ȥ��ƥե졼��ؤΥݥ������᤹�롣 */
370
371 /*** @{ */
372 /*=*/
373
374 /***en
375 @name Variables: Keys of frame parameter
376
377 These are the symbols to use in a parameter to create a frame. See
378 the function mframe () for details.
379
380 @b Mdevice, @b Mdisplay, @b Mscreen, @b Mdrawable, @b Mdepth, and
381 @b Mcolormap are also keys of a frame property. */
382
383 /***ja
384 @name �ѿ��� �ե졼��ѥ����ѥ���
385
386 �ե졼�����������ݤΥѥ������Ѥ��륷��ܥ롣�ܤ����ϴؿ�
387 mframe () ���������ȡ�
388
389 @b Mdevice�� @b Mdisplay�� @b Mscreen�� @b Mdrawable�� @b Mdepth��
390 @b Mcolormap �ϥե졼��ץ�ѥƥ��Υ����Ǥ⤢�롣 */
391
392 /*=*/
393
394 MSymbol Mdevice, Mdisplay, Mscreen, Mdrawable, Mdepth, Mcolormap, Mwidget;
395
396 MSymbol Mgd;
397
398 /*=*/
399
400 /***en
401 @name Variables: Keys of frame property
402
403 These are the symbols to use as an argument to the function
404 mframe_get_prop (). */
405 /***ja
406 @name �ѿ��� �ե졼��ץ�ѥƥ��Υ���
407
408 �ؿ� mframe_get_prop () �ΰ������Ѥ����륷��ܥ롣 */
409 /*** @{ */
410 /*=*/
411 MSymbol Mfont;
412 MSymbol Mfont_width;
413 MSymbol Mfont_ascent;
414 MSymbol Mfont_descent;
415
416 /*=*/
417
418 /*** @} */
419 /*=*/
420
421 /***en
422 @brief Create a new frame.
423
424 The mframe () function creates a new frame with parameters listed
425 in $PLIST which may be @c NULL.
426
427 The recognized keys in $PLIST are window system dependent.
428
429 The following key is always recognized.
430
431 <ul>
432
433 <li> @b Mdevice, the value must be one of #Mx, @b Mgd, and #Mnil.
434
435 If the value is #Mx, the frame is for X Window System. The
436 argument #MDrawWindow specified together with the frame must be of
437 type @c Window. The frame is both readable and writable, thus all
438 GUI functions can be used.
439
440 If the value is @b Mgd, the frame is for an image object of GD
441 library. The argument #MDrawWindow specified together with the
442 frame must be of type @c gdImagePtr. The frame is writable
443 only, thus functions minput_XXX can't be used for the frame.
444
445 If the value is #Mnil, the frame is for a null device. The frame
446 is not writable nor readable, thus functions mdraw_XXX that
447 require the argument #MDrawWindow and functions minput_XXX can't
448 be used for the frame.
449
450 <li> #Mface, the value must be a pointer to #MFace.
451
452 The value is used as the default face of the frame.
453
454 </ul>
455
456 In addition, if the value of the key @b Mdevice is #Mx, the
457 following keys are recognized. They are to specify the root
458 window and the depth of drawables that can be used with the frame.
459
460 <ul>
461
462 <li> @b Mdrawable, the value type must be <tt>Drawable</tt>.
463
464 A parameter of key @b Mdisplay must also be specified. The
465 created frame can be used for drawables whose root window and
466 depth are the same as those of the specified drawable on the
467 specified display.
468
469 When this parameter is specified, the parameter of key @b Mscreen
470 is ignored.
471
472 <li> @b Mwidget, the value type must be <tt>Widget</tt>.
473
474 The created frame can be used for drawables whose root window and
475 depth are the same as those of the specified widget.
476
477 If a parameter of key #Mface is not specified, the default face
478 is created from the resources of the widget.
479
480 When this parameter is specified, the parameters of key @b Mdisplay,
481 @b Mscreen, @b Mdrawable, @b Mdepth are ignored.
482
483 <li> @b Mdepth, the value type must be <tt>unsigned</tt>.
484
485 The created frame can be used for drawables of the specified
486 depth.
487
488 <li> @b Mscreen, the value type must be <tt>(Screen *)</tt>.
489
490 The created frame can be used for drawables whose root window is
491 the same as the root window of the specified screen, and depth is
492 the same at the default depth of the screen.
493
494 When this parameter is specified, parameter of key @b Mdisplay is
495 ignored.
496
497 <li> @b Mdisplay, the value type must be <tt>(Display *)</tt>.
498
499 The created frame can be used for drawables whose root window is
500 the same as the root window for the default screen of the display,
501 and depth is the same as the default depth of the screen.
502
503 <li> @b Mcolormap, the value type must be <tt>(Colormap)</tt>.
504
505 The created frame uses the specified colormap.
506
507 <li> @b Mfont, the value must be #Mx, #Mfreetype, or #Mxft.
508
509 The created frame uses the specified font backend. The value #Mx
510 instructs to use X core fonts, #Mfreetype to use local fonts
511 supported by FreeType fonts, and #Mxft to use local fonts via Xft
512 library. You can specify this parameter more than once with
513 different values if you want to use multiple font backends. This
514 is ignored if the specified font backend is not supported on the
515 device.
516
517 When this parameter is not specified, all font backend supported
518 on the device are used.
519
520 </ul>
521
522 @return
523 If the operation was successful, mframe () returns a pointer to a
524 newly created frame. Otherwise, it returns @c NULL. */
525
526 /***ja
527 @brief �������ե졼�����.
528
529 �ؿ� mframe () �� $PLIST ��Υѥ�������Ŀ������ե졼����롣
530 $PLIST �� @c NULL �Ǥ��ɤ���
531
532 $PLIST �˸����륭���Τ����ɤ줬ǧ������뤫�ϥ�����ɥ������ƥ�˰�¸���롣
533
534 �ʲ��Υ����Ͼ��ǧ������롣
535
536 <ul>
537
538 <li> @b Mdevice. �ͤ� #Mx, @b Mgd, #Mnil �Τ����줫�Ǥʤ��ƤϤʤ�ʤ���
539
540 �ͤ� #Mx �ʤ�С��������ե졼��� X ������ɥ������ƥ��ѤǤ��롣
541 ���Υե졼��ȶ��˻��ꤵ�줿���� #MDrawWindow �ϡ� @c Window
542 ���Ǥʤ��ƤϤʤ�ʤ����ե졼����ɤ߽��Ȥ�˲�ǽ�Ǥ��ꡢ���٤Ƥ�GUI
543 �ؿ������ѤǤ��롣
544
545 �ͤ� @b Mgd �ʤ�С��������ե졼��� GD
546 �饤�֥��Υ�������֥��������ѤǤ��롣���Υե졼��ȶ��˻��ꤵ�줿����
547 #MDrawWindow �ϡ� @c gdImagePtr ���Ǥʤ��ƤϤʤ�ʤ����ե졼��Ͻ��Ф����ѤǤ��ꡢ
548 minput_ �ǻϤޤ�̾���δؿ��ϻ��ѤǤ��ʤ���
549
550 �ͤ� #Mnil �ʤ�С��������ե졼���, null
551 �ǥХ����ѤǤ��롣���Υե졼����ɤ߽��Ǥ��ʤ��Τǡ����� #MDrawWindow
552 ��ɬ�פȤ���mdraw_ �ǻϤޤ�̾���δؿ��䡢minput_ �ǻϤޤ�̾���δؿ��ϻ��ѤǤ��ʤ���
553
554 <li> #Mface. �ͤ� #MFace �ؤΥݥ����Ǥʤ��ƤϤʤ�ʤ���
555
556 �����ͤϥե졼��Υǥե���ȤΥե������Ȥ����Ѥ����롣
557
558 </ul>
559
560 �����Υ����˲ä���@b Mdevice �Υ����� #Mx
561 �Ǥ�����˸¤�ʲ��Υ�����ǧ������롣�ʲ��Υ����ϥ롼�ȥ�����ɥ��ȡ��ե졼������ѤǤ���
562 drawable �ο�������ꤹ�롣
563
564 <ul>
565
566 <li> @b Mdrawable. �ͤ� <tt>Drawable</tt> ���Ǥʤ��ƤϤʤ�ʤ���
567
568 ���� @b Mdisplay ����ĥѥ�������ꤵ��Ƥ���ɬ�פ����롣
569 �������줿�ե졼��ϡ����ꤵ�줿�ǥ����ץ쥤��λ��ꤵ�줿 drawable
570 ��Ʊ���롼�ȥ�����ɥ��ȿ�������� drawable ���Ѥ����롣
571
572 ���Υѥ�����������ˤϡ�@b Mscreen �����Ȥ���ѥ�����̵�뤵��롣
573
574 <li> @b Mwidget. �ͤ� <tt>Widget</tt> ���Ǥʤ��ƤϤʤ�ʤ���
575
576 �������줿�ե졼��ϡ����ꤷ�����������åȤ�Ʊ���롼�ȥ�����ɥ��ȿ��������
577 drawable ���Ѥ����롣
578
579 ���� #Mface ����ĥѥ������ʤ���С��ǥե���ȤΥե������Ϥ���
580 ���������åȤΥ�����������롣
581
582 ���Υѥ�����������ˤϡ�@b Mdisplay, @b Mscreen, @b Mdrawable,
583 @b Mdepth �����Ȥ���ѥ�����̵�뤵��롣
584
585 <li> @b Mdepth. �ͤ� <tt>unsigned</tt> ���Ǥʤ��ƤϤʤ�ʤ���
586
587 �������줿�ե졼��ϡ����ꤷ�������� drawable ���Ѥ����롣
588
589 <li> @b Mscreen. �ͤ� <tt>(Screen *)</tt> ���Ǥʤ��ƤϤʤ�ʤ���
590
591 ���������ե졼��ϡ����ꤷ����������Ʊ���롼�ȥ�����ɥ���������������Υǥե���Ȥο�����Ʊ����������� drawable ���Ѥ����롣
592
593 ���Υѥ�����������ˤϡ�@b Mdisplay �����Ȥ���ѥ�����̵�뤵��롣
594
595 <li> @b Mdisplay. �ͤ� <tt>(Display *)</tt> ���Ǥʤ��ƤϤʤ�ʤ���
596
597 �������줿�ե졼��ϡ����ꤷ���ǥ����ץ쥤�Υǥե���ȥ�������Ʊ���롼�ȥ�����ɥ���Ʊ�����������drawables ���Ѥ����롣
598
599 <li> @b Mcolormap. �ͤ� <tt>(Colormap)</tt> ���Ǥʤ��ƤϤʤ�ʤ���
600
601 �������줿�ե졼��ϡ����ꤷ�����顼�ޥåפ���Ѥ��롣
602
603 <li> #Mfont. �ͤϡ�#Mx, #Mfreetype, #Mxft �Τ����줫��
604
605 �������줿�ե졼��ϻ��ꤷ���ե���ȥХå�����ɤ���Ѥ��롣�ͤ�
606 #Mx �Ǥ���� X �Υ����ե���ȡ�#Mfreetype �Ǥ���� FreeType
607 �ǥ��ݡ��Ȥ���Ƥ��������ե���ȡ�#Mxft �Ǥ���� Xft
608 �饤�֥���ͳ���Ѥ��������ե���Ȥ���Ѥ��롣
609 ʣ���Υե���ȥХå�����ɤ���Ѥ��������ˤϡ����Υѥ�����ʣ�����ۤʤ��ͤǻ��ꤹ�뤳�Ȥ��Ǥ��롣
610 ���ꤷ���Хå�����ɤ����ݡ��Ȥ���Ƥ��ʤ��ǥХ����Ǥϡ����Υѥ�����̵�뤵��롣
611
612 ���Υѥ�����̵�����ˤϡ��ǥХ����ǥ��ݡ��Ȥ���Ƥ��뤹�٤ƤΥե���ȥХå�����ɤ����Ѥ��롣
613
614 </ul>
615
616 @return
617 ��������� mframe() �Ͽ������ե졼��ؤΥݥ������֤��������Ǥʤ����
618 @c NULL ���֤��� */
619
620 MFrame *
mframe(MPlist * plist)621 mframe (MPlist *plist)
622 {
623 MFrame *frame;
624 int plist_created = 0;
625 MPlist *pl;
626 MSymbol device;
627 MDeviceLibraryInterface *interface;
628
629 if (plist)
630 {
631 pl = mplist_find_by_key (plist, Mdevice);
632 if (pl)
633 device = MPLIST_VAL (pl);
634 else
635 device = Mx;
636 }
637 else
638 {
639 plist = mplist ();
640 plist_created = 1;
641 device = Mx;
642 }
643
644 if (device == Mnil)
645 {
646 #ifdef HAVE_FREETYPE
647 interface = &null_interface;
648 if (! interface->handle)
649 {
650 (*interface->init) ();
651 interface->handle = (void *) 1;
652 }
653 #else /* not HAVE_FREETYPE */
654 MERROR (MERROR_WIN, NULL);
655 #endif /* not HAVE_FREETYPE */
656 }
657 else
658 {
659 interface = mplist_get (device_library_list, device);
660 if (! interface)
661 MERROR (MERROR_WIN, NULL);
662 if (! interface->handle)
663 {
664 if (! (interface->handle = dlopen (interface->library, RTLD_NOW))
665 || ! (interface->init
666 = (int (*) ()) dlsym (interface->handle, "device_init"))
667 || ! (interface->open
668 = (int (*) (MFrame *, MPlist *)) dlsym (interface->handle,
669 "device_open"))
670 || ! (interface->fini
671 = (int (*) ()) dlsym (interface->handle, "device_fini"))
672 || (*interface->init) () < 0)
673 {
674 fprintf (stderr, "%s\n", (char *) dlerror ());
675 if (interface->handle)
676 dlclose (interface->handle);
677 MERROR (MERROR_WIN, NULL);
678 }
679 }
680 }
681
682 M17N_OBJECT (frame, free_frame, MERROR_FRAME);
683 if ((*interface->open) (frame, plist) < 0)
684 {
685 free (frame);
686 MERROR (MERROR_WIN, NULL);
687 }
688
689 if (! mframe_default)
690 mframe_default = frame;
691
692 frame->face = mface ();
693 MPLIST_DO (pl, plist)
694 if (MPLIST_KEY (pl) == Mface)
695 mface_merge (frame->face, (MFace *) MPLIST_VAL (pl));
696 mface__update_frame_face (frame);
697 frame->font
698 = frame->rface->rfont ? (MFont *) frame->rface->rfont : NULL;
699 if (plist_created)
700 M17N_OBJECT_UNREF (plist);
701 return frame;
702 }
703
704 /*=*/
705
706 /***en
707 @brief Return property value of frame.
708
709 The mframe_get_prop () function returns a value of property $KEY
710 of frame $FRAME. The valid keys and the corresponding return
711 values are as follows.
712
713 @verbatim
714
715 key type of value meaning of value
716 --- ------------- ----------------
717 Mface MFace * The default face.
718
719 Mfont MFont * The default font.
720
721 Mfont_width int Width of the default font.
722
723 Mfont_ascent int Ascent of the default font.
724
725 Mfont_descent int Descent of the default font.
726
727 @endverbatim
728
729 In the m17n-X library, the followings are also accepted.
730
731 @verbatim
732
733 key type of value meaning of value
734 --- ------------- ----------------
735 Mdisplay Display * Display associated with the frame.
736
737 Mscreen int Screen number of a screen associated
738 with the frame.
739
740 Mcolormap Colormap Colormap of the frame.
741
742 Mdepth unsigned Depth of the frame.
743 @endverbatim
744 */
745
746 /***ja
747 @brief �ե졼��Υץ�ѥƥ����ͤ��֤�.
748
749 �ؿ� mframe_get_prop () �ϥե졼�� $FRAME �Υ��� $KEY
750 ����ĥץ�ѥƥ����ͤ��֤���ͭ���ʥ����Ȥ����ͤϰʲ����̤ꡣ
751
752 @verbatim
753
754 ���� �ͤη� �ͤΰ�̣
755 --- ------------- ----------------
756 Mface MFace * �ǥե���ȤΥե�����
757
758 Mfont MFont * �ǥե���ȤΥե����
759
760 Mfont_width int �ǥե���ȤΥե���Ȥ���
761
762 Mfont_ascent int �ǥե���ȤΥե���Ȥ� ascent
763
764 Mfont_descent int �ǥե���ȤΥե���Ȥ� descent
765
766 @endverbatim
767
768 m17n-X �饤�֥��Ǥϡ��ʲ��Υ�������ѤǤ��롣
769
770 @verbatim
771
772 ���� �ͤη� �ͤΰ�̣
773 --- ------------- ----------------
774 Mdisplay Display * �ե졼��ȴ�Ϣ�դ���줿�ǥ����ץ쥤
775
776 Mscreen int �ե졼��ȴ�Ϣ�դ���줿�������
777 �Υ������ʥ��
778
779 Mcolormap Colormap �ե졼��Υ��顼�ޥå�
780
781 Mdepth unsigned �ե졼��ο���
782 @endverbatim
783
784 */
785
786 void *
mframe_get_prop(MFrame * frame,MSymbol key)787 mframe_get_prop (MFrame *frame, MSymbol key)
788 {
789 if (key == Mface)
790 return frame->face;
791 if (key == Mfont)
792 return frame->font;
793 if (key == Mfont_width)
794 return (void *) (frame->average_width);
795 if (key == Mfont_ascent)
796 return (void *) (frame->ascent);
797 if (key == Mfont_descent)
798 return (void *) (frame->descent);
799 return (*frame->driver->get_prop) (frame, key);
800 }
801
802 /*=*/
803
804 /***en
805 @brief The default frame.
806
807 The external variable #mframe_default contains a pointer to the
808 default frame that is created by the first call of mframe (). */
809
810 /***ja
811 @brief �ǥե���ȤΥե졼��.
812
813 �����ѿ� #mframe_default �ϡ��ǥե���ȤΥե졼��ؤΥݥ�������ġ�
814 �ǥե���ȤΥե졼��ϡ��ǽ�� mframe () ���ƤӽФ��줿�Ȥ��˺���롣 */
815
816 MFrame *mframe_default;
817
818 /*** @} */
819
820 /*
821 Local Variables:
822 coding: euc-japan
823 End:
824 */
825