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comparison src/scrollbar-msw.c @ 225:12579d965149 r20-4b11

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Import from CVS: tag r20-4b11
author cvs
date Mon, 13 Aug 2007 10:11:40 +0200
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224:4663b37daab6 225:12579d965149
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>.
6
7 This file is part of XEmacs.
8
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
12 later version.
13
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
17 for more details.
18
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. */
23
24 /* Synched up with: Not in FSF. */
25
26 #include <config.h>
27 #include "lisp.h"
28
29 #include "console-msw.h"
30 #include "frame.h"
31 #include "window.h"
32 #include "scrollbar-msw.h"
33 #include "events.h"
34 #include "event-msw.h"
35
36 static void
37 mswindows_create_scrollbar_instance (struct frame *f, int vertical,
38 struct scrollbar_instance *sb)
39 {
40 int orientation;
41
42 sb->scrollbar_data = xnew_and_zero (struct mswindows_scrollbar_data);
43
44 if (vertical)
45 orientation = SBS_VERT;
46 else
47 orientation = SBS_HORZ;
48
49 SCROLLBAR_MSW_HANDLE (sb) =
50 CreateWindowEx(0, "SCROLLBAR", 0, orientation|WS_CHILD,
51 CW_USEDEFAULT, CW_USEDEFAULT,
52 CW_USEDEFAULT, CW_USEDEFAULT,
53 FRAME_MSWINDOWS_HANDLE (f),
54 NULL, NULL, NULL);
55 SCROLLBAR_MSW_INFO (sb).fMask = SIF_ALL;
56 GetScrollInfo(SCROLLBAR_MSW_HANDLE (sb), SB_CTL,
57 &SCROLLBAR_MSW_INFO (sb));
58 SetWindowLong (SCROLLBAR_MSW_HANDLE(sb), GWL_USERDATA, (LONG)sb);
59
60 #if 0
61 {
62 HWND h = SCROLLBAR_MSW_HANDLE (sb);
63 int x = SetWindowLong (SCROLLBAR_MSW_HANDLE(sb), GWL_USERDATA, (LONG)sb);
64 int y = GetLastError();
65 struct scrollbar_instance *z = (struct scrollbar_instance *)GetWindowLong (SCROLLBAR_MSW_HANDLE(sb),
66 GWL_USERDATA);
67 *z = *z;
68 }
69 #endif
70 }
71
72 static void
73 mswindows_free_scrollbar_instance (struct scrollbar_instance *sb)
74 {
75 DestroyWindow (SCROLLBAR_MSW_HANDLE (sb));
76 if (sb->scrollbar_data)
77 xfree (sb->scrollbar_data);
78 }
79
80 static void
81 mswindows_release_scrollbar_instance (struct scrollbar_instance *sb)
82 {
83 ShowScrollBar (SCROLLBAR_MSW_HANDLE (sb), SB_CTL, 0);
84 SCROLLBAR_MSW_SIZE (sb) = 0;
85 }
86
87 #define UPDATE_POS_FIELD(field) \
88 if (new_##field >= 0 && SCROLLBAR_MSW_DATA (sb)->field != new_##field) { \
89 SCROLLBAR_MSW_DATA (sb)->field = new_##field; \
90 pos_changed = 1; \
91 }
92
93 static void
94 mswindows_update_scrollbar_instance_values (struct window *w,
95 struct scrollbar_instance *sb,
96 int new_line_increment,
97 int new_page_increment,
98 int new_minimum, int new_maximum,
99 int new_slider_size,
100 int new_slider_position,
101 int new_scrollbar_width,
102 int new_scrollbar_height,
103 int new_scrollbar_x,
104 int new_scrollbar_y)
105 {
106 struct frame *f;
107 int pos_changed = 0;
108
109 f = XFRAME (w->frame);
110
111 /* These might be optimized, but since at least one will change at each
112 call, it's probably not worth it. */
113 SCROLLBAR_MSW_INFO (sb).nMin = new_minimum - 1;
114 SCROLLBAR_MSW_INFO (sb).nMax = new_maximum - 1;
115 SCROLLBAR_MSW_INFO (sb).nPage = new_slider_size;
116 SCROLLBAR_MSW_INFO (sb).nPos = new_slider_position;
117 SCROLLBAR_MSW_INFO (sb).fMask = SIF_ALL;
118
119 SetScrollInfo(SCROLLBAR_MSW_HANDLE (sb), SB_CTL, &SCROLLBAR_MSW_INFO (sb),
120 TRUE);
121
122 UPDATE_POS_FIELD (scrollbar_x);
123 UPDATE_POS_FIELD (scrollbar_y);
124 UPDATE_POS_FIELD (scrollbar_width);
125 UPDATE_POS_FIELD (scrollbar_height);
126
127 if (pos_changed)
128 {
129 MoveWindow(SCROLLBAR_MSW_HANDLE (sb),
130 new_scrollbar_x, new_scrollbar_y,
131 new_scrollbar_width, new_scrollbar_height,
132 TRUE);
133 }
134 }
135
136 static void
137 mswindows_update_scrollbar_instance_status (struct window *w,
138 int active, int size,
139 struct scrollbar_instance *sb)
140 {
141 struct frame *f = XFRAME (w->frame);
142
143 if (SCROLLBAR_MSW_SIZE (sb) != size) {
144 SCROLLBAR_MSW_SIZE (sb) = size;
145 ShowScrollBar (SCROLLBAR_MSW_HANDLE (sb), SB_CTL,
146 SCROLLBAR_MSW_SIZE (sb));
147 FRAMEMETH (f, set_frame_size, (f, FRAME_WIDTH (f), FRAME_HEIGHT (f)));
148 }
149 }
150
151 void
152 mswindows_handle_scrollbar_event (HWND hwnd, int code, int pos)
153 {
154 struct frame *f;
155 Lisp_Object win;
156 struct scrollbar_instance *sb;
157 SCROLLINFO scrollinfo;
158
159 sb = (struct scrollbar_instance *)GetWindowLong (hwnd, GWL_USERDATA);
160 win = real_window (sb->mirror, 1);
161 f = XFRAME (XWINDOW (win)->frame);
162
163 switch (code)
164 {
165 case SB_LINEDOWN:
166 enqueue_misc_user_event(win, Qscrollbar_line_down, win);
167 break;
168
169 case SB_LINEUP:
170 enqueue_misc_user_event(win, Qscrollbar_line_up, win);
171 break;
172
173 case SB_PAGEDOWN:
174 enqueue_misc_user_event(win, Qscrollbar_page_down, Fcons (win, Qnil));
175 break;
176
177 case SB_PAGEUP:
178 enqueue_misc_user_event(win, Qscrollbar_page_up, Fcons (win, Qnil));
179 break;
180
181 case SB_BOTTOM:
182 enqueue_misc_user_event(win, Qscrollbar_to_bottom, win);
183 break;
184
185 case SB_TOP:
186 enqueue_misc_user_event(win, Qscrollbar_to_top, win);
187 break;
188
189 case SB_THUMBTRACK:
190 case SB_THUMBPOSITION:
191 enqueue_misc_user_event (win, Qscrollbar_vertical_drag,
192 Fcons (win, make_int (pos)));
193 break;
194 }
195 }
196
197 #ifdef MEMORY_USAGE_STATS
198
199 static int
200 mswindows_compute_scrollbar_instance_usage (struct device *d,
201 struct scrollbar_instance *inst,
202 struct overhead_stats *ovstats)
203 {
204 int total = 0;
205
206 while (inst)
207 {
208 struct mswindows_scrollbar_data *data =
209 (struct mswindows_scrollbar_data *) inst->scrollbar_data;
210
211 total += malloced_storage_size (data, sizeof (*data), ovstats);
212 inst = inst->next;
213 }
214
215 return total;
216 }
217
218 #endif /* MEMORY_USAGE_STATS */
219
220 /************************************************************************/
221 /* initialization */
222 /************************************************************************/
223
224 void
225 console_type_create_scrollbar_mswindows (void)
226 {
227 CONSOLE_HAS_METHOD (mswindows, create_scrollbar_instance);
228 CONSOLE_HAS_METHOD (mswindows, free_scrollbar_instance);
229 CONSOLE_HAS_METHOD (mswindows, release_scrollbar_instance);
230 CONSOLE_HAS_METHOD (mswindows, update_scrollbar_instance_values);
231 CONSOLE_HAS_METHOD (mswindows, update_scrollbar_instance_status);
232 /* CONSOLE_HAS_METHOD (mswindows, scrollbar_width_changed_in_frame); */
233 #ifdef MEMORY_USAGE_STATS
234 CONSOLE_HAS_METHOD (mswindows, compute_scrollbar_instance_usage);
235 #endif
236 }
237
238 void
239 vars_of_scrollbar_mswindows(void)
240 {
241 Fprovide (intern ("mswindows-scrollbars"));
242 }
243