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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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23 #ifndef _XEMACS_SCROLLBAR_H_
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24 #define _XEMACS_SCROLLBAR_H_
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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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30 /* Used by the frame caches. */
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31 struct scrollbar_instance *next;
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32
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33 /* Pointer back to the mirror structure attached to. */
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34 struct window_mirror *mirror;
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35
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36 /* This flag indicates if the scrollbar is currently in use. */
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37 char scrollbar_is_active;
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38
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39 /* This flag indicates if a data parameter has changed. */
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40 char scrollbar_instance_changed;
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41
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42 /* A structure of auxiliary data specific to the device type.
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43 struct x_scrollbar_data is used for X window frames; defined in
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44 scrollbar-x.h */
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45 void *scrollbar_data;
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46 };
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47
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48 #define SCROLLBAR_INSTANCE_FRAME(inst) (inst->mirror->frame)
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49
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272
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50 void init_frame_scrollbars (struct frame *f);
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51 void init_device_scrollbars (struct device *d);
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52 void init_global_scrollbars (struct device *d);
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53 void free_frame_scrollbars (struct frame *f);
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54 void release_window_mirror_scrollbars (struct window_mirror *mir);
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55 void update_window_scrollbars (struct window *w,
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56 struct window_mirror *mirror,
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57 int active, int horiz_only);
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0
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58 #ifdef MEMORY_USAGE_STATS
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272
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59 int compute_scrollbar_instance_usage (struct device *d,
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60 struct scrollbar_instance *inst,
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61 struct overhead_stats *ovstats);
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0
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62 #endif
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63
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64 extern Lisp_Object Vscrollbar_width, Vscrollbar_height;
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65
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66 extern Lisp_Object Qscrollbar_line_up;
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67 extern Lisp_Object Qscrollbar_line_down;
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68 extern Lisp_Object Qscrollbar_page_up;
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69 extern Lisp_Object Qscrollbar_page_down;
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70 extern Lisp_Object Qscrollbar_to_top;
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71 extern Lisp_Object Qscrollbar_to_bottom;
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72 extern Lisp_Object Qscrollbar_vertical_drag;
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73
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74 extern Lisp_Object Qscrollbar_char_left;
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75 extern Lisp_Object Qscrollbar_char_right;
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76 extern Lisp_Object Qscrollbar_page_left;
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77 extern Lisp_Object Qscrollbar_page_right;
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78 extern Lisp_Object Qscrollbar_to_left;
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79 extern Lisp_Object Qscrollbar_to_right;
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80 extern Lisp_Object Qscrollbar_horizontal_drag;
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81
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82 #endif /* HAVE_SCROLLBARS */
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83
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84 #endif /* _XEMACS_SCROLLBAR_H_ */
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