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428
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1 /* Define scrollbar instance.
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2 Copyright (C) 1994, 1995 Board of Trustees, University of Illinois.
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3
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4 This file is part of XEmacs.
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5
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6 XEmacs is free software; you can redistribute it and/or modify it
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7 under the terms of the GNU General Public License as published by the
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8 Free Software Foundation; either version 2, or (at your option) any
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9 later version.
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10
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11 XEmacs is distributed in the hope that it will be useful, but WITHOUT
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12 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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13 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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14 for more details.
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15
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16 You should have received a copy of the GNU General Public License
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17 along with XEmacs; see the file COPYING. If not, write to
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18 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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19 Boston, MA 02111-1307, USA. */
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20
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21 /* Synched up with: Not in FSF. */
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22
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440
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23 #ifndef INCLUDED_scrollbar_h_
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24 #define INCLUDED_scrollbar_h_
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428
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25
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26 #ifdef HAVE_SCROLLBARS
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27
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28 struct scrollbar_instance
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29 {
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617
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30 struct lcrecord_header header;
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31
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428
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32 /* Used by the frame caches. */
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33 struct scrollbar_instance *next;
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34
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35 /* Pointer back to the mirror structure attached to. */
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36 struct window_mirror *mirror;
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37
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38 /* This flag indicates if the scrollbar is currently in use. */
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39 char scrollbar_is_active;
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40
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41 /* This flag indicates if a data parameter has changed. */
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42 char scrollbar_instance_changed;
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43
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44 /* A structure of auxiliary data specific to the device type.
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45 struct x_scrollbar_data is used for X window frames; defined in
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46 scrollbar-x.h */
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47 void *scrollbar_data;
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48 };
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49
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617
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50 DECLARE_LRECORD (scrollbar_instance, struct scrollbar_instance);
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51 #define XSCROLLBAR_INSTANCE(x) XRECORD (x, scrollbar_instance, struct scrollbar_instance)
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52 #define wrap_scrollbar_instance(p) wrap_record (p, scrollbar_instance)
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53 #define SCROLLBAR_INSTANCEP(x) RECORDP (x, scrollbar_instance)
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54 #define CHECK_SCROLLBAR_INSTANCE(x) CHECK_RECORD (x, scrollbar_instance)
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55 #define CONCHECK_SCROLLBAR_INSTANCE(x) CONCHECK_RECORD (x, scrollbar_instance)
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56
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428
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57 #define SCROLLBAR_INSTANCE_FRAME(inst) (inst->mirror->frame)
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58
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59 void init_frame_scrollbars (struct frame *f);
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60 void init_device_scrollbars (struct device *d);
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61 void init_global_scrollbars (struct device *d);
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62 void free_frame_scrollbars (struct frame *f);
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63 void release_window_mirror_scrollbars (struct window_mirror *mir);
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64 void update_window_scrollbars (struct window *w,
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65 struct window_mirror *mirror,
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66 int active, int horiz_only);
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67 #ifdef MEMORY_USAGE_STATS
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68 int compute_scrollbar_instance_usage (struct device *d,
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69 struct scrollbar_instance *inst,
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70 struct overhead_stats *ovstats);
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71 #endif
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72
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73 extern Lisp_Object Vscrollbar_width, Vscrollbar_height;
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74
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75 extern Lisp_Object Qscrollbar_line_up;
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76 extern Lisp_Object Qscrollbar_line_down;
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77 extern Lisp_Object Qscrollbar_page_up;
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78 extern Lisp_Object Qscrollbar_page_down;
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79 extern Lisp_Object Qscrollbar_to_top;
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80 extern Lisp_Object Qscrollbar_to_bottom;
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81 extern Lisp_Object Qscrollbar_vertical_drag;
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82
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83 extern Lisp_Object Qscrollbar_char_left;
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84 extern Lisp_Object Qscrollbar_char_right;
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85 extern Lisp_Object Qscrollbar_page_left;
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86 extern Lisp_Object Qscrollbar_page_right;
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87 extern Lisp_Object Qscrollbar_to_left;
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88 extern Lisp_Object Qscrollbar_to_right;
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89 extern Lisp_Object Qscrollbar_horizontal_drag;
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90
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91 #endif /* HAVE_SCROLLBARS */
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92
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440
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93 #endif /* INCLUDED_scrollbar_h_ */
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