1 /* scrollbar implementation -- mswindows interface.
2 Copyright (C) 1994, 1995 Board of Trustees, University of Illinois.
3 Copyright (C) 1994 Amdhal Corporation.
4 Copyright (C) 1995 Sun Microsystems, Inc.
5 Copyright (C) 1995 Darrell Kindred <dkindred+@cmu.edu>.
7 This file is part of XEmacs.
9 XEmacs is free software; you can redistribute it and/or modify it
10 under the terms of the GNU General Public License as published by the
11 Free Software Foundation; either version 2, or (at your option) any
14 XEmacs is distributed in the hope that it will be useful, but WITHOUT
15 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
16 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
19 You should have received a copy of the GNU General Public License
20 along with XEmacs; see the file COPYING. If not, write to
21 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
22 Boston, MA 02111-1307, USA. */
24 /* Synched up with: Not in FSF. */
29 #include "console-msw.h"
32 #include "scrollbar-msw.h"
33 #include "scrollbar.h"
34 #include "specifier.h"
37 /* This has really different semantics in Windows than in Motif.
38 There's no corresponding method; we just do not change slider
39 size while dragging. It makes the scrollbar look smother and
40 prevents some weird behavior when scrolled near the bottom */
41 static int inhibit_slider_size_change = 0;
44 mswindows_create_scrollbar_instance (struct frame *f, int vertical,
45 struct scrollbar_instance *sb)
49 sb->scrollbar_data = xnew_and_zero (struct mswindows_scrollbar_data);
52 orientation = SBS_VERT;
54 orientation = SBS_HORZ;
56 SCROLLBAR_MSW_HANDLE (sb) =
57 CreateWindowEx(0, "SCROLLBAR", 0, orientation|WS_CHILD,
58 CW_USEDEFAULT, CW_USEDEFAULT,
59 CW_USEDEFAULT, CW_USEDEFAULT,
60 FRAME_MSWINDOWS_HANDLE (f),
62 SCROLLBAR_MSW_INFO (sb).fMask = SIF_ALL;
63 GetScrollInfo(SCROLLBAR_MSW_HANDLE (sb), SB_CTL,
64 &SCROLLBAR_MSW_INFO (sb));
65 SetWindowLong (SCROLLBAR_MSW_HANDLE(sb), GWL_USERDATA, (LONG)sb);
69 HWND h = SCROLLBAR_MSW_HANDLE (sb);
70 int x = SetWindowLong (SCROLLBAR_MSW_HANDLE(sb), GWL_USERDATA, (LONG)sb);
71 int y = GetLastError();
72 struct scrollbar_instance *z = (struct scrollbar_instance *)GetWindowLong (SCROLLBAR_MSW_HANDLE(sb),
80 mswindows_free_scrollbar_instance (struct scrollbar_instance *sb)
82 DestroyWindow (SCROLLBAR_MSW_HANDLE (sb));
83 if (sb->scrollbar_data)
84 xfree (sb->scrollbar_data);
88 mswindows_release_scrollbar_instance (struct scrollbar_instance *sb)
90 ShowScrollBar (SCROLLBAR_MSW_HANDLE (sb), SB_CTL, 0);
91 SCROLLBAR_MSW_SIZE (sb) = 0;
94 #define UPDATE_POS_FIELD(field) \
95 if (new_##field >= 0 && SCROLLBAR_MSW_DATA (sb)->field != new_##field) { \
96 SCROLLBAR_MSW_DATA (sb)->field = new_##field; \
101 mswindows_update_scrollbar_instance_values (struct window *w,
102 struct scrollbar_instance *sb,
103 int new_line_increment,
104 int new_page_increment,
105 int new_minimum, int new_maximum,
107 int new_slider_position,
108 int new_scrollbar_width,
109 int new_scrollbar_height,
116 f = XFRAME (w->frame);
119 stderr_out ("[%d, %d], page = %d, pos = %d, inhibit = %d\n", new_minimum, new_maximum,
120 new_slider_size, new_slider_position,inhibit_slider_size_change);
123 /* These might be optimized, but since at least one will change at each
124 call, it's probably not worth it. */
125 SCROLLBAR_MSW_INFO (sb).cbSize = sizeof(SCROLLINFO);
126 SCROLLBAR_MSW_INFO (sb).nMin = new_minimum;
127 SCROLLBAR_MSW_INFO (sb).nMax = new_maximum;
128 SCROLLBAR_MSW_INFO (sb).nPage = new_slider_size + 1; /* for DISABLENOSCROLL */
129 SCROLLBAR_MSW_INFO (sb).nPos = new_slider_position;
130 SCROLLBAR_MSW_INFO (sb).fMask = (inhibit_slider_size_change
131 ? SIF_RANGE | SIF_POS
132 : SIF_ALL | SIF_DISABLENOSCROLL);
134 SetScrollInfo(SCROLLBAR_MSW_HANDLE (sb), SB_CTL, &SCROLLBAR_MSW_INFO (sb),
137 UPDATE_POS_FIELD (scrollbar_x);
138 UPDATE_POS_FIELD (scrollbar_y);
139 UPDATE_POS_FIELD (scrollbar_width);
140 UPDATE_POS_FIELD (scrollbar_height);
144 MoveWindow(SCROLLBAR_MSW_HANDLE (sb),
145 new_scrollbar_x, new_scrollbar_y,
146 new_scrollbar_width, new_scrollbar_height,
152 mswindows_update_scrollbar_instance_status (struct window *w,
153 int active, int size,
154 struct scrollbar_instance *sb)
156 if (SCROLLBAR_MSW_SIZE (sb) != size)
158 SCROLLBAR_MSW_SIZE (sb) = size;
159 ShowScrollBar (SCROLLBAR_MSW_HANDLE (sb), SB_CTL,
160 SCROLLBAR_MSW_SIZE (sb));
161 SCROLLBAR_MSW_INFO(sb).fMask |= SIF_DISABLENOSCROLL;
162 SetScrollInfo(SCROLLBAR_MSW_HANDLE (sb), SB_CTL, &SCROLLBAR_MSW_INFO (sb), TRUE);
167 mswindows_handle_scrollbar_event (HWND hwnd, int code, int pos)
170 Lisp_Object win, frame;
171 struct scrollbar_instance *sb;
172 SCROLLINFO scrollinfo;
173 int vert = GetWindowLong (hwnd, GWL_STYLE) & SBS_VERT;
175 sb = (struct scrollbar_instance *)GetWindowLong (hwnd, GWL_USERDATA);
176 win = real_window (sb->mirror, 1);
177 frame = XWINDOW (win)->frame;
180 inhibit_slider_size_change = code == SB_THUMBTRACK;
182 /* SB_LINEDOWN == SB_CHARLEFT etc. This is the way they will
183 always be - any Windows is binary compatible backward with
189 mswindows_enqueue_misc_user_event
190 (frame, vert ? Qscrollbar_line_down : Qscrollbar_char_right, win);
194 mswindows_enqueue_misc_user_event
195 (frame, vert ? Qscrollbar_line_up : Qscrollbar_char_left, win);
199 mswindows_enqueue_misc_user_event
200 (win, vert ? Qscrollbar_page_down : Qscrollbar_page_right,
201 vert ? Fcons (win, Qnil) : win);
205 mswindows_enqueue_misc_user_event
207 vert ? Qscrollbar_page_up : Qscrollbar_page_left,
208 vert ? Fcons (win, Qnil) : win);
212 mswindows_enqueue_misc_user_event
213 (frame, vert ? Qscrollbar_to_bottom : Qscrollbar_to_right, win);
217 mswindows_enqueue_misc_user_event
218 (frame, vert ? Qscrollbar_to_top : Qscrollbar_to_left, win);
222 case SB_THUMBPOSITION:
223 scrollinfo.cbSize = sizeof(SCROLLINFO);
224 scrollinfo.fMask = SIF_TRACKPOS;
225 GetScrollInfo (hwnd, SB_CTL, &scrollinfo);
226 mswindows_enqueue_misc_user_event
228 vert ? Qscrollbar_vertical_drag : Qscrollbar_horizontal_drag,
229 Fcons (win, make_int (scrollinfo.nTrackPos)));
234 #ifdef MEMORY_USAGE_STATS
237 mswindows_compute_scrollbar_instance_usage (struct device *d,
238 struct scrollbar_instance *inst,
239 struct overhead_stats *ovstats)
245 struct mswindows_scrollbar_data *data =
246 (struct mswindows_scrollbar_data *) inst->scrollbar_data;
248 total += malloced_storage_size (data, sizeof (*data), ovstats);
255 #endif /* MEMORY_USAGE_STATS */
257 /************************************************************************/
258 /* Device-specific ghost specifiers initialization */
259 /************************************************************************/
261 DEFUN ("mswindows-init-scrollbar-metrics", Fmswindows_init_scrollbar_metrics, 1, 1, 0, /*
265 if (DEVICEP (locale))
267 add_spec_to_ghost_specifier (Vscrollbar_width,
268 make_int (GetSystemMetrics (SM_CXVSCROLL)),
269 locale, Qmswindows, Qnil);
270 add_spec_to_ghost_specifier (Vscrollbar_height,
271 make_int (GetSystemMetrics (SM_CYHSCROLL)),
272 locale, Qmswindows, Qnil);
278 /************************************************************************/
280 /************************************************************************/
283 console_type_create_scrollbar_mswindows (void)
285 CONSOLE_HAS_METHOD (mswindows, create_scrollbar_instance);
286 CONSOLE_HAS_METHOD (mswindows, free_scrollbar_instance);
287 CONSOLE_HAS_METHOD (mswindows, release_scrollbar_instance);
288 CONSOLE_HAS_METHOD (mswindows, update_scrollbar_instance_values);
289 CONSOLE_HAS_METHOD (mswindows, update_scrollbar_instance_status);
290 /* CONSOLE_HAS_METHOD (mswindows, scrollbar_width_changed_in_frame); */
291 #ifdef MEMORY_USAGE_STATS
292 CONSOLE_HAS_METHOD (mswindows, compute_scrollbar_instance_usage);
297 syms_of_scrollbar_mswindows(void)
299 DEFSUBR (Fmswindows_init_scrollbar_metrics);
303 vars_of_scrollbar_mswindows(void)
305 Fprovide (intern ("mswindows-scrollbars"));