summaryrefslogtreecommitdiff
path: root/payloads/libpayload/curses/PDCurses/x11/ScrollBox.c
blob: e77d2c78cedab2ef4d6d86aad77393ede3297678 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
/*
 * Copyright 1989 O'Reilly and Associates, Inc.

     The X Consortium, and any party obtaining a copy of these files from
     the X Consortium, directly or indirectly, is granted, free of charge, a
     full and unrestricted irrevocable, world-wide, paid up, royalty-free,
     nonexclusive right and license to deal in this software and
     documentation files (the "Software"), including without limitation the
     rights to use, copy, modify, merge, publish, distribute, sublicense,
     and/or sell copies of the Software, and to permit persons who receive
     copies from any such party to do so.  This license includes without
     limitation a license to do the foregoing actions under any patents of
     the party supplying this software to the X Consortium.

     $Id: ScrollBox.c,v 1.15 2008/07/14 04:24:52 wmcbrine Exp $
 */

/* ScrollBox.c - scrollBox composite widget */

#include <X11/IntrinsicP.h>
#include <X11/StringDefs.h>
#include <X11/Shell.h>

#include "x11/ScrollBoxP.h"

#include <stdio.h>

#define INITIAL_WIDTH 300
#define INITIAL_HEIGHT 300

/************************************************************************
 *                                                                      *
 * scrollBox Resources                                                  *
 *                                                                      *
 ************************************************************************/

static XtResource resources[] =
{
    { XtNhSpace, XtCHSpace, XtRDimension, sizeof(Dimension),
        XtOffset(ScrollBoxWidget, scrollBox.h_space),
        XtRImmediate, (XtPointer)4 },
    { XtNvSpace, XtCVSpace, XtRDimension, sizeof(Dimension),
        XtOffset(ScrollBoxWidget, scrollBox.v_space),
        XtRImmediate, (XtPointer)4 },
    { XtNheightInc, XtCHeightInc, XtRDimension, sizeof(Dimension),
        XtOffset(ScrollBoxWidget, scrollBox.increment_height),
        XtRImmediate, (XtPointer)13 },
    { XtNwidthInc, XtCWidthInc, XtRDimension, sizeof(Dimension),
        XtOffset(ScrollBoxWidget, scrollBox.increment_width),
        XtRImmediate, (XtPointer)7 },
};

/************************************************************************
 *                                                                      *
 * Full class record constant                                           *
 *                                                                      *
 ************************************************************************/

static void Initialize(Widget, Widget, ArgList, Cardinal *);
static void Resize(Widget);
static Boolean SetValues(Widget, Widget, Widget, ArgList, Cardinal *);
static void ChangeManaged(Widget);
static XtGeometryResult QueryGeometry(Widget, XtWidgetGeometry *,
                                      XtWidgetGeometry *);
static XtGeometryResult GeometryManager(Widget, XtWidgetGeometry *,
                                        XtWidgetGeometry *);
static void RefigureLocations(Widget);

ScrollBoxClassRec scrollBoxClassRec = {
  {
    /* core_class fields        */
        /* superclass           */  (WidgetClass) &compositeClassRec,
        /* class_name           */  "scrollBox",
        /* widget_size          */  sizeof(ScrollBoxRec),
        /* class_initialize     */  NULL,
        /* class_part_init      */  NULL,
        /* class_inited         */  FALSE,
        /* initialize           */  Initialize,
        /* initialize_hook      */  NULL,
        /* realize              */  XtInheritRealize,
        /* actions              */  NULL,
        /* num_actions          */  0,
        /* resources            */  resources,
        /* num_resources        */  XtNumber(resources),
        /* xrm_class            */  NULLQUARK,
        /* compress_motion      */  TRUE,
        /* compress_exposure    */  TRUE,
        /* compress_enterleave  */  TRUE,
        /* visible_interest     */  FALSE,
        /* destroy              */  NULL,
        /* resize               */  Resize,
        /* expose               */  NULL,
        /* set_values           */  SetValues,
        /* set_values_hook      */  NULL,
        /* set_values_almost    */  XtInheritSetValuesAlmost,
        /* get_values_hook      */  NULL,
        /* accept_focus         */  NULL,
        /* version              */  XtVersion,
        /* callback_private     */  NULL,
        /* tm_table             */  NULL,
        /* query_geometry       */  QueryGeometry,
        /* display_accelerator  */  XtInheritDisplayAccelerator,
        /* extension            */  NULL
  },{
    /* composite_class fields   */
        /* geometry_manager     */  GeometryManager,
        /* change_managed       */  ChangeManaged,
        /* insert_child         */  XtInheritInsertChild,
        /* delete_child         */  XtInheritDeleteChild,
        /* extension            */  NULL
  },{
    /* scrollBox class fields   */
        /* empty                */  0,
  }
};

WidgetClass scrollBoxWidgetClass = (WidgetClass)&scrollBoxClassRec;


/************************************************************************
 *                                                                      *
 * Private Routines                                                     *
 *                                                                      *
 ************************************************************************/

/* Do a layout, either actually assigning positions, or just
   calculating size. */

static void DoLayout(Widget w, Boolean doit)
{
    ScrollBoxWidget sbw = (ScrollBoxWidget)w;
    Widget wmain, vscroll, hscroll, child;
    Dimension mw, mh;   /* main window */
    Dimension vh;   /* vertical scrollbar length (height) */
    Dimension hw;   /* horizontal scrollbar length (width) */
    Position vx;
    Position hy;
    Cardinal i;

    if (sbw->composite.num_children != 3)
        XtAppError(XtWidgetToApplicationContext(w),
            "ScrollBox: must manage exactly three widgets.");

    for (i = 0; i < sbw->composite.num_children; i++)
    {
        child = sbw->composite.children[i];

        if (!XtIsManaged(child))
            XtAppError(XtWidgetToApplicationContext(w),
                "ScrollBox: all three widgets must be managed.");
    }

    /* Child one is the main window, two is the vertical scrollbar,
       and three is the horizontal scrollbar. */

    wmain = sbw->composite.children[0];
    vscroll = sbw->composite.children[1];
    hscroll = sbw->composite.children[2];

    /* Size all three widgets so that space is fully utilized. */

    mw = sbw->core.width - (2 * sbw->scrollBox.h_space) -
        vscroll->core.width - (2 * vscroll->core.border_width) -
        (2 * wmain->core.border_width);

    mh = sbw->core.height - (2 * sbw->scrollBox.v_space) -
        hscroll->core.height - (2 * hscroll->core.border_width) -
        (2 * wmain->core.border_width);

    /* Force the main window to be sized to the appropriate increment. */

    mw = (mw / sbw->scrollBox.increment_width) *
        sbw->scrollBox.increment_width;

    mh = ((mh / sbw->scrollBox.increment_height) *
        sbw->scrollBox.increment_height) +
        sbw->scrollBox.increment_height;

    vx = wmain->core.x + mw + sbw->scrollBox.h_space +
        wmain->core.border_width + vscroll->core.border_width;

    hy = wmain->core.y + mh + sbw->scrollBox.v_space +
        wmain->core.border_width + hscroll->core.border_width;

    vh = mh;   /* scrollbars are always same length as main window */
    hw = mw;

    if (doit)
    {
        XtResizeWidget(wmain, mw, mh, 1);

        XtResizeWidget(vscroll, vscroll->core.width, vh, 1);
        XtMoveWidget(vscroll, vx, vscroll->core.y);

        XtResizeWidget(hscroll, hw, hscroll->core.height, 1);
        XtMoveWidget(hscroll, hscroll->core.x, hy);
    }
}

static XtGeometryResult GeometryManager(Widget w, XtWidgetGeometry *request,
                                        XtWidgetGeometry *reply)
{
    XtWidgetGeometry allowed;

    if (request->request_mode & ~(XtCWQueryOnly | CWWidth | CWHeight))
        return XtGeometryNo;

    if (request->request_mode & CWWidth)
        allowed.width = request->width;
    else
        allowed.width = w->core.width;

    if (request->request_mode & CWHeight)
        allowed.height = request->height;
    else
        allowed.height = w->core.height;

    if (allowed.width == w->core.width && allowed.height == w->core.height)
        return XtGeometryNo;

    if (!(request->request_mode & XtCWQueryOnly))
        RefigureLocations(w);

    return XtGeometryYes;
}

static void RefigureLocations(Widget w)
{
    DoLayout(w, False);
}

/* Calculate preferred size.  We can't just use the current sizes
   of the children, because that calculation would always end up with
   our current size.  Could query each child, and use that size to
   recalculate a size for us, then if it ends up being larger than width
   and height passed in, accept bounding box. However, we know our
   children and they don't have any particular preferred geometry,
   except the bigger the better. Therefore, if the parent suggested a
   size, we'll take it. */

static XtGeometryResult QueryGeometry(Widget w, XtWidgetGeometry *request,
                                      XtWidgetGeometry *reply_return)
{
    XtGeometryResult result=XtGeometryNo;

    request->request_mode &= CWWidth | CWHeight;

    /* parent isn't going to change w or h, so nothing to re-compute */

    if (request->request_mode == 0)
        return XtGeometryYes;

    /* if proposed size is large enough, accept it.  Otherwise, suggest
       our arbitrary initial size. */

    if (request->request_mode & CWHeight)
    {
        if (request->height < INITIAL_HEIGHT)
        {
            result = XtGeometryAlmost;
            reply_return->height = INITIAL_HEIGHT;
            reply_return->request_mode &= CWHeight;
        }
        else
            result = XtGeometryYes;
    }

    if (request->request_mode & CWWidth)
    {
        if (request->width < INITIAL_WIDTH)
        {
            result = XtGeometryAlmost;
            reply_return->width = INITIAL_WIDTH;
            reply_return->request_mode &= CWWidth;
        }
        else
            result = XtGeometryYes;
    }

    return result;
}

/* Actually layout the scrollBox  */

static void Resize(Widget w)
{
    DoLayout(w, True);
}

static void ChangeManaged(Widget w)
{
    DoLayout(w, True);
}

static void Initialize(Widget request, Widget new,
                       ArgList args, Cardinal *num_args)
{
    ScrollBoxWidget newsbw = (ScrollBoxWidget)new;

    if (newsbw->core.width == 0)
        newsbw->core.width = INITIAL_WIDTH;

    if (newsbw->core.height == 0)
        newsbw->core.height = INITIAL_HEIGHT;

}

static Boolean SetValues(Widget current, Widget request, Widget new,
                         ArgList args, Cardinal *num_args)
{
    ScrollBoxWidget sbwcurrent = (ScrollBoxWidget)current;
    ScrollBoxWidget sbwnew = (ScrollBoxWidget)new;

    /* need to relayout if h_space or v_space change */

    if ((sbwnew->scrollBox.h_space != sbwcurrent->scrollBox.h_space) ||
        (sbwnew->scrollBox.v_space != sbwcurrent->scrollBox.v_space))
        DoLayout(new, True);

    return False;
}