xv/xvview.c

   1 /* XView viewer routines.
   2    Copyright (C) 1995 Jakub Jelinek.
   3
   4    This program is free software; you can redistribute it and/or modify
   5    it under the terms of the GNU General Public License as published by
   6    the Free Software Foundation; either version 2 of the License, or
   7    (at your option) any later version.
   8
   9    This program is distributed in the hope that it will be useful,
  10    but WITHOUT ANY WARRANTY; without even the implied warranty of
  11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12    GNU General Public License for more details.
  13
  14    You should have received a copy of the GNU General Public License
  15    along with this program; if not, write to the Free Software
  16    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.  */
  17
  18 #include <config.h>
  19
  20 #include <X11/Xlib.h>
  21 #include <xview/xview.h>
  22 #include <xview/frame.h>
  23 #include <xview/panel.h>
  24 #include <xview/svrimage.h>
  25 #include <xview/canvas.h>
  26 #include <xview/scrollbar.h>
  27 #include <xview/cms.h>
  28 #include <xview/xv_xrect.h>
  29 #include <xview/textsw.h>
  30
  31 #include <stdio.h>
  32 #include "fs.h"
  33 #include "dlg.h"
  34 #define WANT_WIDGETS
  35 #include "view.h"
  36 #include "../src/util.h"
  37 #include "../src/mad.h"
  38 #include "xvmain.h"
  39
  40 extern Frame mcframe;
  41 Frame viewframe;
  42 Panel viewpanel;
  43 Textsw viewcanvas;
  44 Cms viewcms;
  45
  46 extern void view_destroy(WView *);
  47
  48 static void x_quit_cmd (Panel_button_item);
  49
  50 /*static struct {
  51     unsigned short *bits;
  52     void (*callback) (void);
  53 } buttons [] = {
  54 index_bits, x_index_cmd,
  55 back_bits, x_back_cmd,
  56 previous_bits, x_previous_cmd,
  57 next_bits, x_next_cmd,
  58 search_bits, x_search_cmd };*/
  59
  60 static void fetch_content (Textsw textsw, WView *view)
  61 {
  62     char *p;
  63     int n;
  64
  65     if (view->growing_buffer) {
  66         p = xmalloc (2048, "view growing");
  67         if (view->stdfile != (FILE *)-1)
  68             n = fread (p, 1, 2048, view->stdfile);
  69         else
  70             n = mc_read (view->file, p, 2048);
  71         textsw_insert (textsw, p, n);
  72         free (p);
  73     } else {
  74         textsw_insert (textsw, view->data, view->bytes_read);
  75     }
  76 }
  77
  78 static void textsw_notify (Textsw textsw, Attr_attribute *attrs)
  79 {
  80     WView *view = (WView *) xv_get (textsw, XV_KEY_DATA, KEY_DATA_VIEW);
  81     Rect *from, *to;
  82
  83     for (; *attrs; attrs = attr_next (attrs)) {
  84         switch (*attrs) {
  85             case TEXTSW_ACTION_SCROLLED:
  86                 from = (Rect *) attrs [1];
  87                 to = (Rect *) attrs [2];
  88                 if (view->growing_buffer) {
  89                     if (view->stdfile != (FILE *) -1) {
  90                         xv_get (textsw, TEXTSW_FIRST_LINE);
  91                     } else {
  92                         xv_get (textsw, TEXTSW_FIRST_LINE);
  93                     }
  94                 }
  95                 break;
  96             default:
  97                 break;
  98         }
  99     }
 100 }
 101
 102 static void create_frame (WView *view)
 103 {
 104     Panel_button_item button;
 105     /*    int i;*/
 106
 107     viewcms = (Cms) xv_create (XV_NULL, CMS,
 108         CMS_CONTROL_CMS, TRUE,
 109         CMS_SIZE, CMS_CONTROL_COLORS + 5,
 110         CMS_NAMED_COLORS, "black", "red4", "green4", "black", NULL,
 111         NULL);
 112
 113     viewframe = xv_create (mcframe, FRAME,
 114         FRAME_LABEL, "View",
 115         WIN_CMS, viewcms,
 116         FRAME_INHERIT_COLORS, TRUE,
 117         FRAME_SHOW_FOOTER, TRUE,
 118         XV_KEY_DATA, KEY_DATA_VIEW, view,
 119         NULL);
 120
 121     viewpanel = xv_create (viewframe, PANEL,
 122         XV_KEY_DATA, KEY_DATA_VIEW, view,
 123         NULL);
 124 /*
 125     xv_create (viewpanel, PANEL_BUTTON,
 126         PANEL_LABEL_STRING, "Help",
 127         PANEL_ITEM_MENU, xv_create (XV_NULL, MENU,
 128             MENU_ITEM,
 129                 MENU_STRING, "Help on Help",
 130                 MENU_NOTIFY_PROC, x_view_on_view,
 131                 NULL,
 132             MENU_ITEM,
 133                 MENU_STRING, "Index",
 134                 MENU_NOTIFY_PROC, x_index_cmd,
 135                 NULL,
 136             MENU_ITEM,
 137                 MENU_STRING, "Back",
 138                 MENU_NOTIFY_PROC, x_back_cmd,
 139                 NULL,
 140             MENU_ITEM,
 141                 MENU_STRING, "Previous",
 142                 MENU_NOTIFY_PROC, x_previous_cmd,
 143                 NULL,
 144             MENU_ITEM,
 145                 MENU_STRING, "Next",
 146                 MENU_NOTIFY_PROC, x_next_cmd,
 147                 NULL,
 148             MENU_ITEM,
 149                 MENU_STRING, "Search",
 150                 MENU_NOTIFY_PROC, x_search_cmd,
 151                 NULL,
 152             NULL),
 153         NULL);
 154     button = (Panel_button_item) xv_create (viewpanel, PANEL_BUTTON,
 155         PANEL_LABEL_STRING, "Quit",
 156         PANEL_NOTIFY_PROC, x_quit_cmd,
 157         NULL);
 158     for (i = 0; i < sizeof (buttons) / sizeof (buttons [0]); i++) {
 159         button = (Panel_button_item) xv_create (viewpanel, PANEL_BUTTON,
 160             PANEL_LABEL_IMAGE, xv_create (XV_NULL, SERVER_IMAGE,
 161                 SERVER_IMAGE_DEPTH, 1,
 162                 XV_WIDTH, 48,
 163                 XV_HEIGHT, 48,
 164                 SERVER_IMAGE_BITS, buttons [i].bits,
 165                 NULL),
 166             PANEL_NOTIFY_PROC, buttons [i].callback,
 167             NULL);
 168         if (!i)
 169             xv_set (button,
 170                 PANEL_NEXT_ROW, -1,
 171                 NULL);
 172     }
 173 */
 174     button = (Panel_button_item) xv_create (viewpanel, PANEL_BUTTON,
 175         PANEL_LABEL_STRING, "Quit",
 176         XV_KEY_DATA, KEY_DATA_VIEW, view,
 177         PANEL_CLIENT_DATA, viewframe,
 178         PANEL_NOTIFY_PROC, x_quit_cmd,
 179         NULL);
 180
 181     window_fit (viewpanel);
 182
 183     xv_set (viewpanel,
 184         XV_WIDTH, WIN_EXTEND_TO_EDGE,
 185         NULL);
 186
 187     xv_set (viewframe,
 188         XV_KEY_DATA, KEY_DATA_PANEL, viewpanel,
 189         NULL);
 190
 191     viewcanvas = xv_create (viewframe, TEXTSW,
 192         WIN_BELOW, viewpanel,
 193         XV_KEY_DATA, KEY_DATA_VIEW, view,
 194         TEXTSW_BROWSING, TRUE,
 195         TEXTSW_DISABLE_CD, TRUE,
 196         TEXTSW_DISABLE_LOAD, TRUE,
 197         TEXTSW_NOTIFY_PROC, textsw_notify,
 198         TEXTSW_NOTIFY_LEVEL, TEXTSW_NOTIFY_ALL,
 199         TEXTSW_IGNORE_LIMIT, TEXTSW_INFINITY,
 200         TEXTSW_INSERT_MAKES_VISIBLE, TEXTSW_IF_AUTO_SCROLL,
 201         TEXTSW_LOWER_CONTEXT, -1,
 202         TEXTSW_UPPER_CONTEXT, -1,
 203         NULL);
 204
 205     xv_create (viewcanvas, SCROLLBAR,
 206         SCROLLBAR_DIRECTION, SCROLLBAR_VERTICAL,
 207         SCROLLBAR_SPLITTABLE, TRUE,
 208         NULL);
 209
 210     fetch_content (viewcanvas, view);
 211 /*    xv_create (viewcanvas, SCROLLBAR,
 212         SCROLLBAR_DIRECTION, SCROLLBAR_HORIZONTAL,
 213         SCROLLBAR_SPLITTABLE, TRUE,
 214         NULL);*/
 215
 216     window_fit (viewframe);
 217
 218     xv_set (viewframe,
 219         XV_KEY_DATA, KEY_DATA_CANVAS, viewcanvas,
 220         NULL);
 221
 222     xv_set (viewframe,
 223         XV_SHOW, TRUE,
 224         NULL);
 225
 226 }
 227
 228 void x_view (WView *view)
 229 {
 230     create_frame (view);
 231 }
 232
 233 static void x_quit_cmd (Panel_button_item button)
 234 {
 235     view_destroy ((WView *)xv_get(button, XV_KEY_DATA, KEY_DATA_VIEW));
 236     xv_destroy_safe ((Frame)xv_get(button, PANEL_CLIENT_DATA));
 237     xv_dispatch_a_bit();
 238 }