| File: | ScrollByL.c |
| Location: | line 1035, column 13 |
| Description: | Value stored to 'x_loc' is never read |
| 1 | /* |
| 2 | |
| 3 | Copyright (c) 1987, 1988 X Consortium |
| 4 | |
| 5 | Permission is hereby granted, free of charge, to any person obtaining |
| 6 | a copy of this software and associated documentation files (the |
| 7 | "Software"), to deal in the Software without restriction, including |
| 8 | without limitation the rights to use, copy, modify, merge, publish, |
| 9 | distribute, sublicense, and/or sell copies of the Software, and to |
| 10 | permit persons to whom the Software is furnished to do so, subject to |
| 11 | the following conditions: |
| 12 | |
| 13 | The above copyright notice and this permission notice shall be included |
| 14 | in all copies or substantial portions of the Software. |
| 15 | |
| 16 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS |
| 17 | OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
| 18 | MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. |
| 19 | IN NO EVENT SHALL THE X CONSORTIUM BE LIABLE FOR ANY CLAIM, DAMAGES OR |
| 20 | OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, |
| 21 | ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR |
| 22 | OTHER DEALINGS IN THE SOFTWARE. |
| 23 | |
| 24 | Except as contained in this notice, the name of the X Consortium shall |
| 25 | not be used in advertising or otherwise to promote the sale, use or |
| 26 | other dealings in this Software without prior written authorization |
| 27 | from the X Consortium. |
| 28 | |
| 29 | */ |
| 30 | |
| 31 | #include <stdio.h> |
| 32 | #include <ctype.h> |
| 33 | #include <X11/Xos.h> |
| 34 | #include <stdlib.h> |
| 35 | |
| 36 | #include <X11/IntrinsicP.h> |
| 37 | #include <sys/stat.h> /* depends on IntrinsicP.h */ |
| 38 | #include <X11/StringDefs.h> |
| 39 | |
| 40 | #include <X11/Xaw/Scrollbar.h> |
| 41 | |
| 42 | #include "ScrollByLP.h" |
| 43 | |
| 44 | /* Default Translation Table */ |
| 45 | |
| 46 | static char defaultTranslations[] = |
| 47 | "<Key>f: Page(Forward) \n\ |
| 48 | <Key>b: Page(Back) \n\ |
| 49 | <Key>1: Page(Line, 1) \n\ |
| 50 | <Key>2: Page(Line, 2) \n\ |
| 51 | <Key>3: Page(Line, 3) \n\ |
| 52 | <Key>4: Page(Line, 4) \n\ |
| 53 | <Key>\\ : Page(Forward)"; |
| 54 | |
| 55 | /**************************************************************** |
| 56 | * |
| 57 | * ScrollByLine Resources |
| 58 | * |
| 59 | ****************************************************************/ |
| 60 | |
| 61 | #define Offset(field) XtOffset(ScrollByLineWidget, scroll.field)((Cardinal) (((char *) (&(((ScrollByLineWidget)((void*)0) )->scroll.field))) - ((char *) ((void*)0)))) |
| 62 | #define CoreOffset(field) XtOffset(ScrollByLineWidget, core.field)((Cardinal) (((char *) (&(((ScrollByLineWidget)((void*)0) )->core.field))) - ((char *) ((void*)0)))) |
| 63 | |
| 64 | static XtResource resources[] = { |
| 65 | {XtNwidth((char*)&XtStrings[872]), XtCWidth((char*)&XtStrings[1510]), XtRDimension((char*)&XtStrings[1618]), sizeof(Dimension), |
| 66 | CoreOffset(width), XtRImmediate((char*)&XtStrings[1695]), (caddr_t) 500}, |
| 67 | {XtNheight((char*)&XtStrings[234]), XtCHeight((char*)&XtStrings[1051]), XtRDimension((char*)&XtStrings[1618]), sizeof(Dimension), |
| 68 | CoreOffset(height), XtRImmediate((char*)&XtStrings[1695]), (caddr_t) 700}, |
| 69 | |
| 70 | {XtNforeground((char*)&XtStrings[214]), XtCForeground((char*)&XtStrings[1022]), XtRPixel((char*)&XtStrings[1754]), sizeof(Pixel), |
| 71 | Offset(foreground), XtRString((char*)&XtStrings[1797]), "XtDefaultForeground"}, |
| 72 | {XtNforceVert"forceVert", XtCBoolean((char*)&XtStrings[920]), XtRBoolean((char*)&XtStrings[1561]), sizeof(Boolean), |
| 73 | Offset(force_vert), XtRImmediate((char*)&XtStrings[1695]), (caddr_t) FALSE0}, |
| 74 | {XtNindent"indent", XtCIndent"Indent", XtRDimension((char*)&XtStrings[1618]), sizeof(Dimension), |
| 75 | Offset(indent), XtRImmediate((char*)&XtStrings[1695]), (caddr_t) 15}, |
| 76 | {XtNuseRight((char*)&XtStrings[850]), XtCBoolean((char*)&XtStrings[920]), XtRBoolean((char*)&XtStrings[1561]), sizeof(Boolean), |
| 77 | Offset(use_right), XtRImmediate((char*)&XtStrings[1695]), (caddr_t) FALSE0}, |
| 78 | {XtNmanualFontNormal"manualFontNormal", XtCFont((char*)&XtStrings[1017]), XtRFontStruct((char*)&XtStrings[1666]), sizeof(XFontStruct *), |
| 79 | Offset(normal_font), XtRString((char*)&XtStrings[1797]), MANPAGE_NORMAL"*-new century schoolbook-medium-r-normal--*-120-*"}, |
| 80 | {XtNmanualFontBold"manualFontBold", XtCFont((char*)&XtStrings[1017]), XtRFontStruct((char*)&XtStrings[1666]), sizeof(XFontStruct *), |
| 81 | Offset(bold_font), XtRString((char*)&XtStrings[1797]), MANPAGE_BOLD"*-new century schoolbook-bold-r-normal--*-120-*"}, |
| 82 | {XtNmanualFontItalic"manualFontItalic", XtCFont((char*)&XtStrings[1017]), XtRFontStruct((char*)&XtStrings[1666]), sizeof(XFontStruct *), |
| 83 | Offset(italic_font), XtRString((char*)&XtStrings[1797]), MANPAGE_ITALIC"*-new century schoolbook-bold-i-normal--*-120-*"}, |
| 84 | {XtNmanualFontSymbol"manualFontSymbol", XtCFont((char*)&XtStrings[1017]), XtRFontStruct((char*)&XtStrings[1666]), sizeof(XFontStruct *), |
| 85 | Offset(symbol_font), XtRString((char*)&XtStrings[1797]), MANPAGE_SYMBOL"*-symbol-medium-r-normal--*-120-*"}, |
| 86 | {XtNfile((char*)&XtStrings[194]), XtCFile((char*)&XtStrings[1012]), XtRFile((char*)&XtStrings[1650]), sizeof(FILE *), |
| 87 | Offset(file), XtRImmediate((char*)&XtStrings[1695]), (caddr_t) NULL((void*)0)}, |
| 88 | {XtNNumTotalLines"numTotalLines", XtCNumTotalLines"NumTotalLines", XtRInt((char*)&XtStrings[1718]), sizeof(int), |
| 89 | Offset(lines), XtRImmediate((char*)&XtStrings[1695]), (caddr_t) 0}, |
| 90 | {XtNNumVisibleLines"numVisibleLines", XtCNumVisibleLines"NumVisibleLines", XtRInt((char*)&XtStrings[1718]), sizeof(int), |
| 91 | Offset(num_visible_lines), XtRImmediate((char*)&XtStrings[1695]), (caddr_t) 0}, |
| 92 | }; |
| 93 | |
| 94 | #undef Offset |
| 95 | #undef CoreOffset |
| 96 | |
| 97 | /**************************************************************** |
| 98 | * |
| 99 | * Full class record constant |
| 100 | * |
| 101 | ****************************************************************/ |
| 102 | |
| 103 | static void CreateScrollbar(Widget w); |
| 104 | static Boolean ScrollVerticalText(Widget w, int new_line, Boolean force_redisp); |
| 105 | static void Layout(Widget w); |
| 106 | static void LoadFile(Widget w); |
| 107 | static void MoveAndClearText(Widget w, int old_y, int height, int new_y); |
| 108 | static void PaintText(Widget w, int y_loc, int height); |
| 109 | static void PrintText(Widget w, int start_line, int num_lines, int location); |
| 110 | static void SetThumbHeight(Widget w); |
| 111 | static void VerticalJump(Widget w, XtPointer junk, XtPointer percent_ptr); |
| 112 | static void VerticalScroll(Widget w, XtPointer client_data, |
| 113 | XtPointer call_data); |
| 114 | |
| 115 | /* semi - public functions. */ |
| 116 | |
| 117 | static void Realize(Widget w, Mask *valueMask, |
| 118 | XSetWindowAttributes *attributes); |
| 119 | static void Initialize(Widget req, Widget new, ArgList args, |
| 120 | Cardinal *num_args); |
| 121 | static void Destroy(Widget w); |
| 122 | static void Redisplay(Widget w, XEvent *event, Region region); |
| 123 | static void Page(Widget w, XEvent *event, String *params, Cardinal *num_params); |
| 124 | static Boolean SetValuesHook(Widget w, ArgList args, Cardinal *num_args); |
| 125 | |
| 126 | static XtActionsRec actions[] = { |
| 127 | {"Page", Page}, |
| 128 | }; |
| 129 | |
| 130 | #define superclass (&simpleClassRec) |
| 131 | #define SuperClass simpleWidgetClass |
| 132 | |
| 133 | ScrollByLineClassRec scrollByLineClassRec = { |
| 134 | { |
| 135 | /* core_class fields */ |
| 136 | /* superclass */ (WidgetClass) superclass, |
| 137 | /* class_name */ "ScrollByLine", |
| 138 | /* widget_size */ sizeof(ScrollByLineRec), |
| 139 | /* class_initialize */ NULL((void*)0), |
| 140 | /* class_part_init */ NULL((void*)0), |
| 141 | /* class_inited */ FALSE0, |
| 142 | /* initialize */ Initialize, |
| 143 | /* initialize_hook */ NULL((void*)0), |
| 144 | /* realize */ Realize, |
| 145 | /* actions */ actions, |
| 146 | /* num_actions */ XtNumber(actions)((Cardinal) (sizeof(actions) / sizeof(actions[0]))), |
| 147 | /* resources */ resources, |
| 148 | /* num_resources */ XtNumber(resources)((Cardinal) (sizeof(resources) / sizeof(resources[0]))), |
| 149 | /* xrm_class */ NULLQUARK((XrmQuark) 0), |
| 150 | /* compress_motion */ TRUE1, |
| 151 | /* compress_exposure */ FALSE0, |
| 152 | /* compress_enterleave */ TRUE1, |
| 153 | /* visible_interest */ FALSE0, |
| 154 | /* destroy */ Destroy, |
| 155 | /* resize */ Layout, |
| 156 | /* expose */ Redisplay, |
| 157 | /* set_values */ NULL((void*)0), |
| 158 | /* set_values_hook */ SetValuesHook, |
| 159 | /* set_values_almost */ XtInheritSetValuesAlmost((XtAlmostProc) _XtInherit), |
| 160 | /* get_values_hook */ NULL((void*)0), |
| 161 | /* accept_focus */ NULL((void*)0), |
| 162 | /* version */ XtVersion(11 * 1000 + 6), |
| 163 | /* callback_private */ NULL((void*)0), |
| 164 | /* tm_table */ defaultTranslations, |
| 165 | /* query_geometry */ XtInheritQueryGeometry((XtGeometryHandler) _XtInherit), |
| 166 | /* display_accelerator */ XtInheritDisplayAccelerator((XtStringProc) _XtInherit), |
| 167 | /* extension */ NULL((void*)0), |
| 168 | }, |
| 169 | { |
| 170 | /* simple fields */ |
| 171 | /* change_sensitive */ XtInheritChangeSensitive((int (*)(Widget))_XtInherit) |
| 172 | } |
| 173 | }; |
| 174 | |
| 175 | WidgetClass scrollByLineWidgetClass = (WidgetClass) &scrollByLineClassRec; |
| 176 | |
| 177 | /**************************************************************** |
| 178 | * |
| 179 | * Private Routines |
| 180 | * |
| 181 | ****************************************************************/ |
| 182 | |
| 183 | /* Function Name: Layout |
| 184 | * Description: This function lays out the scroll widget. |
| 185 | * Arguments: w - the scroll widget. |
| 186 | * key - a boolean: if true then resize the widget to the child |
| 187 | * if false the resize children to fit widget. |
| 188 | * Returns: TRUE if successful. |
| 189 | */ |
| 190 | |
| 191 | static void |
| 192 | Layout(Widget w) |
| 193 | { |
| 194 | ScrollByLineWidget sblw = (ScrollByLineWidget) w; |
| 195 | Dimension width, height; |
| 196 | Widget bar; |
| 197 | Position bar_bw; |
| 198 | |
| 199 | CreateScrollbar(w); |
| 200 | |
| 201 | /* |
| 202 | * For now always show the bar. |
| 203 | */ |
| 204 | |
| 205 | bar = sblw->scroll.bar; |
| 206 | height = sblw->core.height; |
| 207 | width = sblw->core.width; |
| 208 | bar_bw = bar->core.border_width; |
| 209 | |
| 210 | /* Move child and v_bar to correct location. */ |
| 211 | if (sblw->scroll.use_right) { |
| 212 | XtMoveWidget(bar, width - (bar->core.width + bar_bw), -bar_bw); |
| 213 | sblw->scroll.offset = 0; |
| 214 | } |
| 215 | else { |
| 216 | XtMoveWidget(bar, -bar_bw, -bar_bw); |
| 217 | sblw->scroll.offset = bar->core.width + bar_bw; |
| 218 | } |
| 219 | |
| 220 | /* resize the scrollbar to be the correct height or width. */ |
| 221 | XtResizeWidget(bar, bar->core.width, height, bar->core.border_width); |
| 222 | |
| 223 | SetThumbHeight(w); |
| 224 | |
| 225 | sblw->scroll.num_visible_lines = height / sblw->scroll.font_height + 1; |
| 226 | } |
| 227 | |
| 228 | /* ARGSUSED */ |
| 229 | static void |
| 230 | GExpose(Widget w, XtPointer junk, XEvent * event, Boolean * cont) |
| 231 | { |
| 232 | |
| 233 | /* |
| 234 | * Graphics exposure events are not currently sent to exposure proc. |
| 235 | */ |
| 236 | |
| 237 | if (event->type == GraphicsExpose13) |
| 238 | Redisplay(w, event, NULL((void*)0)); |
| 239 | |
| 240 | } /* ChildExpose */ |
| 241 | |
| 242 | /* |
| 243 | * Repaint the widget's child Window Widget. |
| 244 | */ |
| 245 | |
| 246 | /* ARGSUSED */ |
| 247 | static void |
| 248 | Redisplay(Widget w, XEvent * event, Region region) |
| 249 | { |
| 250 | int top, height; /* the locations of the top and height |
| 251 | of the region that needs to be repainted. */ |
| 252 | |
| 253 | /* |
| 254 | * This routine tells the client which sections of the window to |
| 255 | * repaint in his callback function which does the actual repainting. |
| 256 | */ |
| 257 | |
| 258 | if (event->type == Expose12) { |
| 259 | top = event->xexpose.y; |
| 260 | height = event->xexpose.height; |
| 261 | } |
| 262 | else { |
| 263 | top = event->xgraphicsexpose.y; |
| 264 | height = event->xgraphicsexpose.height; |
| 265 | } |
| 266 | |
| 267 | PaintText(w, top, height); |
| 268 | } /* redisplay (expose) */ |
| 269 | |
| 270 | /* Function Name: PaintText |
| 271 | * Description: paints the text at the give location for a given height. |
| 272 | * Arguments: w - the sbl widget. |
| 273 | * y_loc, height - location and size of area to paint. |
| 274 | * Returns: none |
| 275 | */ |
| 276 | |
| 277 | static void |
| 278 | PaintText(Widget w, int y_loc, int height) |
| 279 | { |
| 280 | ScrollByLineWidget sblw = (ScrollByLineWidget) w; |
| 281 | int start_line, location; |
| 282 | |
| 283 | start_line = y_loc / sblw->scroll.font_height + sblw->scroll.line_pointer; |
| 284 | |
| 285 | if (start_line >= sblw->scroll.lines) |
| 286 | return; |
| 287 | |
| 288 | /* |
| 289 | * Only integer arithmetic makes this possible. |
| 290 | */ |
| 291 | |
| 292 | location = y_loc / sblw->scroll.font_height * sblw->scroll.font_height; |
| 293 | |
| 294 | PrintText(w, start_line, sblw->scroll.num_visible_lines, location); |
| 295 | } |
| 296 | |
| 297 | /* Function Name: Page |
| 298 | * Description: This function pages the widget, by the amount it receives |
| 299 | * from the translation Manager. |
| 300 | * Arguments: w - the ScrollByLineWidget. |
| 301 | * event - the event that caused this return. |
| 302 | * params - the parameters passed to it. |
| 303 | * num_params - the number of parameters. |
| 304 | * Returns: none. |
| 305 | */ |
| 306 | |
| 307 | /* ARGSUSED */ |
| 308 | static void |
| 309 | Page(Widget w, XEvent * event, String * params, Cardinal * num_params) |
| 310 | { |
| 311 | ScrollByLineWidget sblw = (ScrollByLineWidget) w; |
| 312 | Widget bar = sblw->scroll.bar; |
| 313 | |
| 314 | if (*num_params < 1) |
| 315 | return; |
| 316 | /* |
| 317 | * If no scroll bar is visible then do not page, as the entire window is shown, |
| 318 | * or scrolling has been turned off. |
| 319 | */ |
| 320 | |
| 321 | if (bar == (Widget) NULL((void*)0)) |
| 322 | return; |
| 323 | |
| 324 | switch (params[0][0]) { |
| 325 | case 'f': |
| 326 | case 'F': |
| 327 | /* move one page forward */ |
| 328 | VerticalScroll(bar, NULL((void*)0), (XtPointer) ((long) bar->core.height)); |
| 329 | break; |
| 330 | case 'b': |
| 331 | case 'B': |
| 332 | /* move one page backward */ |
| 333 | VerticalScroll(bar, NULL((void*)0), (XtPointer) (-(long) bar->core.height)); |
| 334 | break; |
| 335 | case 'L': |
| 336 | case 'l': |
| 337 | /* move one line forward */ |
| 338 | VerticalScroll(bar, NULL((void*)0), |
| 339 | (XtPointer) ((long) atoi(params[1]) * |
| 340 | sblw->scroll.font_height)); |
| 341 | break; |
| 342 | default: |
| 343 | return; |
| 344 | } |
| 345 | } |
| 346 | |
| 347 | /* Function Name: CreateScrollbar |
| 348 | * Description: createst the scrollbar for us. |
| 349 | * Arguments: w - sblw widget. |
| 350 | * Returns: none. |
| 351 | */ |
| 352 | |
| 353 | static void |
| 354 | CreateScrollbar(Widget w) |
| 355 | { |
| 356 | ScrollByLineWidget sblw = (ScrollByLineWidget) w; |
| 357 | Arg args[5]; |
| 358 | Cardinal num_args = 0; |
| 359 | |
| 360 | if (sblw->scroll.bar != NULL((void*)0)) |
| 361 | return; |
| 362 | |
| 363 | XtSetArg(args[num_args], XtNorientation, XtorientVertical)((void)( (args[num_args]).name = (((char*)&XtStrings[505] )), (args[num_args]).value = (XtArgVal)(XtorientVertical) )); |
| 364 | num_args++; |
| 365 | |
| 366 | sblw->scroll.bar = XtCreateWidget("scrollbar", scrollbarWidgetClass, w, |
| 367 | args, num_args); |
| 368 | XtAddCallback(sblw->scroll.bar, XtNscrollProc((char*)&XtStrings[591]), VerticalScroll, NULL((void*)0)); |
| 369 | XtAddCallback(sblw->scroll.bar, XtNjumpProc((char*)&XtStrings[370]), VerticalJump, NULL((void*)0)); |
| 370 | } |
| 371 | |
| 372 | /* Function Name: ScrollVerticalText |
| 373 | * Description: This accomplished the actual movement of the text. |
| 374 | * Arguments: w - the ScrollByLine Widget. |
| 375 | * new_line - the new location for the line pointer |
| 376 | * force_redisplay - should we force this window to get |
| 377 | * redisplayed? |
| 378 | * Returns: True if the thumb needs to be moved. |
| 379 | */ |
| 380 | |
| 381 | static Boolean |
| 382 | ScrollVerticalText(Widget w, int new_line, Boolean force_redisp) |
| 383 | { |
| 384 | ScrollByLineWidget sblw = (ScrollByLineWidget) w; |
| 385 | int num_lines = sblw->scroll.num_visible_lines; |
| 386 | int max_lines, old_line; |
| 387 | Boolean move_thumb = FALSE0; |
| 388 | |
| 389 | /* |
| 390 | * Do not let the window extend out of bounds. |
| 391 | */ |
| 392 | |
| 393 | if (new_line < 0) { |
| 394 | new_line = 0; |
| 395 | move_thumb = TRUE1; |
| 396 | } |
| 397 | else { |
| 398 | max_lines = sblw->scroll.lines - |
| 399 | (int) w->core.height / sblw->scroll.font_height; |
| 400 | if (max_lines < 0) |
| 401 | max_lines = 0; |
| 402 | |
| 403 | if (new_line > max_lines) { |
| 404 | new_line = max_lines; |
| 405 | move_thumb = TRUE1; |
| 406 | } |
| 407 | } |
| 408 | |
| 409 | /* |
| 410 | * If forced to redisplay then do a full redisplay and return. |
| 411 | */ |
| 412 | |
| 413 | old_line = sblw->scroll.line_pointer; |
| 414 | sblw->scroll.line_pointer = new_line; /* Set current top of page. */ |
| 415 | |
| 416 | if (force_redisp) |
| 417 | MoveAndClearText(w, 0, /* cause a full redisplay */ 0, 0); |
| 418 | |
| 419 | if (new_line == old_line) |
| 420 | return (move_thumb); |
| 421 | |
| 422 | /* |
| 423 | * Scroll forward. |
| 424 | */ |
| 425 | |
| 426 | else if (new_line < old_line) { |
| 427 | int lines_to_scroll = old_line - new_line; |
| 428 | MoveAndClearText(w, 0, num_lines - lines_to_scroll, lines_to_scroll); |
| 429 | } |
| 430 | |
| 431 | /* |
| 432 | * Scroll back. |
| 433 | */ |
| 434 | |
| 435 | else { |
| 436 | int lines_to_scroll = new_line - old_line; |
| 437 | MoveAndClearText(w, lines_to_scroll, num_lines - lines_to_scroll, 0); |
| 438 | } |
| 439 | |
| 440 | return (move_thumb); |
| 441 | } |
| 442 | |
| 443 | /* Function Name: MoveAndClearText |
| 444 | * Description: Blits as much text as it can and clear the |
| 445 | * remaining area with generate exposures TRUE. |
| 446 | * Arguments: w - the sbl widget. |
| 447 | * old_y - the old y position. |
| 448 | * height - height of area to move. |
| 449 | * new_y - new y position. |
| 450 | * Returns: none |
| 451 | */ |
| 452 | |
| 453 | static void |
| 454 | MoveAndClearText(Widget w, int old_y, int height, int new_y) |
| 455 | { |
| 456 | ScrollByLineWidget sblw = (ScrollByLineWidget) w; |
| 457 | int from_left = sblw->scroll.indent + sblw->scroll.offset - 1; |
| 458 | int y_clear; |
| 459 | |
| 460 | old_y *= sblw->scroll.font_height; |
| 461 | new_y *= sblw->scroll.font_height; |
| 462 | height *= sblw->scroll.font_height; |
| 463 | |
| 464 | /* |
| 465 | * If we are already at the right location then do nothing. |
| 466 | * (height == 0). |
| 467 | * |
| 468 | * If we have scrolled more than a screen height then just clear |
| 469 | * the window. |
| 470 | */ |
| 471 | |
| 472 | if (height <= sblw->scroll.font_height) { /* avoid rounding errors. */ |
| 473 | XClearArea(XtDisplay(w)(((w)->core.screen)->display), XtWindow(w)((w)->core.window), from_left, 0, |
| 474 | (unsigned int) 0, (unsigned int) 0, FALSE0); |
| 475 | PaintText(w, 0, (int) sblw->core.height); |
| 476 | return; |
| 477 | } |
| 478 | |
| 479 | if ((int) height + (int) old_y > (int) w->core.height) |
| 480 | height = w->core.height - old_y; |
| 481 | |
| 482 | XCopyArea(XtDisplay(w)(((w)->core.screen)->display), XtWindow(w)((w)->core.window), XtWindow(w)((w)->core.window), sblw->scroll.move_gc, |
| 483 | from_left, old_y, |
| 484 | (unsigned int) w->core.width - from_left, (unsigned int) height, |
| 485 | from_left, new_y); |
| 486 | |
| 487 | if (old_y > new_y) |
| 488 | height -= sblw->scroll.font_height / 2; /* clear 1/2 font of extra space, |
| 489 | to make sure we don't lose or |
| 490 | gain descenders. */ |
| 491 | else |
| 492 | height -= sblw->scroll.font_height; /* clear 1 font of extra space, |
| 493 | to make sure we don't overwrite |
| 494 | with a last line in buffer. */ |
| 495 | |
| 496 | if (old_y > new_y) |
| 497 | y_clear = height; |
| 498 | else |
| 499 | y_clear = 0; |
| 500 | |
| 501 | /* |
| 502 | * We cannot use generate exposures, since that may allow another move and |
| 503 | * clear before the area get repainted, this would be bad. |
| 504 | */ |
| 505 | |
| 506 | XClearArea(XtDisplay(w)(((w)->core.screen)->display), XtWindow(w)((w)->core.window), from_left, y_clear, |
| 507 | (unsigned int) 0, (unsigned int) (w->core.height - height), |
| 508 | FALSE0); |
| 509 | PaintText(w, (int) y_clear, (int) (w->core.height - height)); |
| 510 | } |
| 511 | |
| 512 | /* Function Name: SetThumbHeight |
| 513 | * Description: Set the height of the thumb. |
| 514 | * Arguments: w - the sblw widget. |
| 515 | * Returns: none |
| 516 | */ |
| 517 | |
| 518 | static void |
| 519 | SetThumbHeight(Widget w) |
| 520 | { |
| 521 | ScrollByLineWidget sblw = (ScrollByLineWidget) w; |
| 522 | float shown; |
| 523 | |
| 524 | if (sblw->scroll.bar == NULL((void*)0)) |
| 525 | return; |
| 526 | |
| 527 | if (sblw->scroll.lines == 0) |
| 528 | shown = 1.0; |
| 529 | else |
| 530 | shown = (float) w->core.height / (float) (sblw->scroll.lines * |
| 531 | sblw->scroll.font_height); |
| 532 | if (shown > 1.0) |
| 533 | shown = 1.0; |
| 534 | |
| 535 | XawScrollbarSetThumb(sblw->scroll.bar, (float) -1, shown); |
| 536 | } |
| 537 | |
| 538 | /* Function Name: SetThumb |
| 539 | * Description: Set the thumb location. |
| 540 | * Arguments: w - the sblw. |
| 541 | * Returns: none |
| 542 | */ |
| 543 | |
| 544 | static void |
| 545 | SetThumb(Widget w) |
| 546 | { |
| 547 | float location; |
| 548 | ScrollByLineWidget sblw = (ScrollByLineWidget) w; |
| 549 | |
| 550 | if ((sblw->scroll.lines == 0) || (sblw->scroll.bar == NULL((void*)0))) |
| 551 | return; |
| 552 | |
| 553 | location = (float) sblw->scroll.line_pointer / (float) sblw->scroll.lines; |
| 554 | XawScrollbarSetThumb(sblw->scroll.bar, location, (float) -1); |
| 555 | } |
| 556 | |
| 557 | /* Function Name: VerticalJump. |
| 558 | * Description: This function moves the test |
| 559 | * as the vertical scroll bar is moved. |
| 560 | * Arguments: w - the scrollbar widget. |
| 561 | * junk - not used. |
| 562 | * percent - the position of the scrollbar. |
| 563 | * Returns: none. |
| 564 | */ |
| 565 | |
| 566 | /* ARGSUSED */ |
| 567 | static void |
| 568 | VerticalJump(Widget w, XtPointer junk, XtPointer percent_ptr) |
| 569 | { |
| 570 | float percent = *((float *) percent_ptr); |
| 571 | int new_line; /* The new location for the line pointer. */ |
| 572 | ScrollByLineWidget sblw = (ScrollByLineWidget) XtParent(w)((w)->core.parent); |
| 573 | |
| 574 | new_line = (int) ((float) sblw->scroll.lines * percent); |
| 575 | if (ScrollVerticalText((Widget) sblw, new_line, FALSE0)) |
| 576 | SetThumb((Widget) sblw); |
| 577 | } |
| 578 | |
| 579 | /* Function Name: VerticalScroll |
| 580 | * Description: This function moves the position of the interior window |
| 581 | * as the vertical scroll bar is moved. |
| 582 | * Arguments: w - the scrollbar widget. |
| 583 | * junk - not used. |
| 584 | * pos - the position of the cursor. |
| 585 | * Returns: none. |
| 586 | */ |
| 587 | |
| 588 | /* ARGSUSED */ |
| 589 | static void |
| 590 | VerticalScroll(Widget w, XtPointer client_data, XtPointer call_data) |
| 591 | { |
| 592 | int pos = (int) (long) call_data; |
| 593 | int new_line; /* The new location for the line pointer. */ |
| 594 | ScrollByLineWidget sblw = (ScrollByLineWidget) XtParent(w)((w)->core.parent); |
| 595 | |
| 596 | new_line = sblw->scroll.line_pointer + (pos / sblw->scroll.font_height); |
| 597 | (void) ScrollVerticalText((Widget) sblw, new_line, FALSE0); |
| 598 | SetThumb((Widget) sblw); |
| 599 | } |
| 600 | |
| 601 | /* ARGSUSED */ |
| 602 | static void |
| 603 | Initialize(Widget req, Widget new, ArgList args, Cardinal * num_args) |
| 604 | { |
| 605 | ScrollByLineWidget sblw = (ScrollByLineWidget) new; |
| 606 | unsigned long figWidth; |
| 607 | Atom atomNum; |
| 608 | |
| 609 | sblw->scroll.top_line = NULL((void*)0); |
| 610 | sblw->scroll.line_pointer = 0; |
| 611 | LoadFile(new); |
| 612 | sblw->scroll.bar = (Widget) NULL((void*)0); |
| 613 | |
| 614 | sblw->scroll.font_height = (sblw->scroll.normal_font->max_bounds.ascent + |
| 615 | sblw->scroll.normal_font->max_bounds.descent); |
| 616 | |
| 617 | atomNum = XInternAtom(XtDisplay(req)(((req)->core.screen)->display), "FIGURE_WIDTH", False0); |
| 618 | |
| 619 | if (XGetFontProperty(sblw->scroll.normal_font, atomNum, &figWidth)) |
| 620 | sblw->scroll.h_width = figWidth; |
| 621 | else |
| 622 | sblw->scroll.h_width = XTextWidth(sblw->scroll.normal_font, "$", 1); |
| 623 | } /* Initialize. */ |
| 624 | |
| 625 | /* Function Name: CreateGCs |
| 626 | * Description: Creates the graphics contexts that we need. |
| 627 | * Arguments: w - the sblw. |
| 628 | * Returns: none |
| 629 | */ |
| 630 | |
| 631 | static void |
| 632 | CreateGCs(Widget w) |
| 633 | { |
| 634 | ScrollByLineWidget sblw = (ScrollByLineWidget) w; |
| 635 | |
| 636 | XtGCMask mask; |
| 637 | XGCValues values; |
| 638 | |
| 639 | values.graphics_exposures = TRUE1; |
| 640 | sblw->scroll.move_gc = XtGetGC(w, GCGraphicsExposures(1L<<16), &values); |
| 641 | |
| 642 | mask = GCForeground(1L<<2) | GCFont(1L<<14); |
| 643 | values.foreground = sblw->scroll.foreground; |
| 644 | |
| 645 | values.font = sblw->scroll.normal_font->fid; |
| 646 | sblw->scroll.normal_gc = XtGetGC(w, mask, &values); |
| 647 | |
| 648 | values.font = sblw->scroll.italic_font->fid; |
| 649 | sblw->scroll.italic_gc = XtGetGC(w, mask, &values); |
| 650 | |
| 651 | values.font = sblw->scroll.bold_font->fid; |
| 652 | sblw->scroll.bold_gc = XtGetGC(w, mask, &values); |
| 653 | |
| 654 | values.font = sblw->scroll.symbol_font->fid; |
| 655 | sblw->scroll.symbol_gc = XtGetGC(w, mask, &values); |
| 656 | } |
| 657 | |
| 658 | /* Function Name: DestroyGCs |
| 659 | * Description: removes all gcs for this widget. |
| 660 | * Arguments: w - the widget. |
| 661 | * Returns: none |
| 662 | */ |
| 663 | |
| 664 | static void |
| 665 | DestroyGCs(Widget w) |
| 666 | { |
| 667 | ScrollByLineWidget sblw = (ScrollByLineWidget) w; |
| 668 | |
| 669 | XtReleaseGC(w, sblw->scroll.normal_gc); |
| 670 | XtReleaseGC(w, sblw->scroll.bold_gc); |
| 671 | XtReleaseGC(w, sblw->scroll.italic_gc); |
| 672 | XtReleaseGC(w, sblw->scroll.move_gc); |
| 673 | } |
| 674 | |
| 675 | static void |
| 676 | Realize(Widget w, Mask *valueMask, XSetWindowAttributes * attributes) |
| 677 | { |
| 678 | ScrollByLineWidget sblw = (ScrollByLineWidget) w; |
| 679 | |
| 680 | CreateScrollbar(w); |
| 681 | CreateGCs(w); |
| 682 | Layout(w); |
| 683 | (*SuperClass->core_class.realize) (w, valueMask, attributes); |
| 684 | XtRealizeWidget(sblw->scroll.bar); /* realize scrollbar. */ |
| 685 | XtMapWidget(sblw->scroll.bar)XMapWindow((((sblw->scroll.bar)->core.screen)->display ), ((sblw->scroll.bar)->core.window)); /* map scrollbar. */ |
| 686 | |
| 687 | XtAddEventHandler(w, 0, TRUE1, GExpose, NULL((void*)0)); /* Get Graphics Exposures */ |
| 688 | } /* Realize */ |
| 689 | |
| 690 | /* Function Name: Destroy |
| 691 | * Description: Cleans up when we are killed. |
| 692 | * Arguments: w - the widget. |
| 693 | * Returns: none |
| 694 | */ |
| 695 | |
| 696 | static void |
| 697 | Destroy(Widget w) |
| 698 | { |
| 699 | ScrollByLineWidget sblw = (ScrollByLineWidget) w; |
| 700 | |
| 701 | if (sblw->scroll.bar != NULL((void*)0)) |
| 702 | XtDestroyWidget(sblw->scroll.bar); /* Destroy scrollbar. */ |
| 703 | if (sblw->scroll.file != NULL((void*)0)) |
| 704 | fclose(sblw->scroll.file); |
| 705 | DestroyGCs(w); |
| 706 | } |
| 707 | |
| 708 | /* |
| 709 | * |
| 710 | * Set Values |
| 711 | * |
| 712 | */ |
| 713 | |
| 714 | /* ARGSUSED */ |
| 715 | static Boolean |
| 716 | SetValuesHook(Widget w, ArgList args, Cardinal * num_args) |
| 717 | { |
| 718 | Boolean ret = TRUE1; |
| 719 | Cardinal i; |
| 720 | |
| 721 | for (i = 0; i < *num_args; i++) { |
| 722 | if (strcmp(XtNfile((char*)&XtStrings[194]), args[i].name) == 0) { |
| 723 | LoadFile(w); |
| 724 | ret = TRUE1; |
| 725 | } |
| 726 | } |
| 727 | |
| 728 | /* |
| 729 | * Changing anything else will have strange effects, I don't need it so |
| 730 | * I didn't code it. |
| 731 | */ |
| 732 | |
| 733 | return (ret); |
| 734 | |
| 735 | } /* Set Values */ |
| 736 | |
| 737 | /* |
| 738 | * A little design philosophy is probably wise to include at this point. |
| 739 | * |
| 740 | * One of the things that I has hoped to achieve with xman is to make the |
| 741 | * viewing of manpage not only easy for the nieve user, but also fast for |
| 742 | * the experienced user, I wanted to be able to use it too. To achieve this |
| 743 | * I end up sacrificing a bit of start up time for the manual data structure. |
| 744 | * As well as, the overhead of reading the entire file before putting it up |
| 745 | * on the display. This is actually hardly even noticeable since most manual |
| 746 | * pages are shots, one to two pages - the notable exception is of course csh, |
| 747 | * but then that should be broken up anyway. |
| 748 | * |
| 749 | * METHOD: |
| 750 | * |
| 751 | * I allocate a chunk of space that is the size of the file, plus a null for |
| 752 | * debugging. Then copies the file into this chunk of memory. I then allocate |
| 753 | * an array of char*'s that are assigned to the beginning of each line. Yes, |
| 754 | * this means that I have to read the file twice, and could probably be more |
| 755 | * clever about it, but once it is in memory the second read is damn fast. |
| 756 | * There are a few obscurities here about guessing the number of lines and |
| 757 | * reallocing if I guess wrong, but other than that it is pretty straight |
| 758 | * forward. |
| 759 | * |
| 760 | * Chris Peterson |
| 761 | * 1/27/88 |
| 762 | */ |
| 763 | |
| 764 | #define ADD_MORE_MEM100 100 /* first guesses for allocations. */ |
| 765 | #define CHAR_PER_LINE40 40 |
| 766 | |
| 767 | /* Function Name: LoadFile |
| 768 | * Description: Loads the current file into the internal memory. |
| 769 | * Arguments: w - the sblw. |
| 770 | * Returns: none |
| 771 | */ |
| 772 | |
| 773 | static void |
| 774 | LoadFile(Widget w) |
| 775 | { |
| 776 | ScrollByLineWidget sblw = (ScrollByLineWidget) w; |
| 777 | FILE *file = sblw->scroll.file; |
| 778 | |
| 779 | char *page; |
| 780 | char **line_pointer, **top_line; /* pointers to beginnings of the |
| 781 | lines of the file. */ |
| 782 | int nlines; /* the current number of allocated lines. */ |
| 783 | struct stat fileinfo; /* file information from fstat. */ |
| 784 | |
| 785 | if (sblw->scroll.top_line != NULL((void*)0)) { |
| 786 | XtFree(*(sblw->scroll.top_line)); /* free characters. */ |
| 787 | XtFree((char *) (sblw->scroll.top_line)); /* free lines. */ |
| 788 | } |
| 789 | sblw->scroll.top_line = NULL((void*)0); |
| 790 | |
| 791 | if (file == NULL((void*)0)) |
| 792 | return; |
| 793 | |
| 794 | /* |
| 795 | * Get file size and allocate a chunk of memory for the file to be |
| 796 | * copied into. |
| 797 | */ |
| 798 | |
| 799 | if (fstat(fileno(file), &fileinfo)) |
| 800 | XtAppError(XtWidgetToApplicationContext(w), |
| 801 | "SBLW LoadFile: Failure in fstat."); |
| 802 | |
| 803 | /* |
| 804 | * Allocate a space for a list of pointer to the beginning of each line. |
| 805 | */ |
| 806 | |
| 807 | if ((nlines = fileinfo.st_size / CHAR_PER_LINE40) == 0) |
| 808 | return; |
| 809 | |
| 810 | page = XtMalloc(fileinfo.st_size + 1); /* leave space for the NULL */ |
| 811 | top_line = line_pointer = (char **) XtMalloc(nlines * sizeof(char *)); |
| 812 | |
| 813 | /* |
| 814 | * Copy the file into memory. |
| 815 | */ |
| 816 | |
| 817 | fseek(file, 0L, SEEK_SET0); |
| 818 | if (fread(page, sizeof(char), fileinfo.st_size, file) == 0) |
| 819 | XtAppError(XtWidgetToApplicationContext(w), |
| 820 | "SBLW LoadFile: Failure in fread."); |
| 821 | |
| 822 | /* put NULL at end of buffer. */ |
| 823 | |
| 824 | *(page + fileinfo.st_size) = '\0'; |
| 825 | |
| 826 | /* |
| 827 | * Go through the file setting a line pointer to the character after each |
| 828 | * new line. If we run out of line pointer space then realloc that space |
| 829 | * with space for more lines. |
| 830 | */ |
| 831 | |
| 832 | *line_pointer++ = page; /* first line points to first char in buffer. */ |
| 833 | while (*page != '\0') { |
| 834 | |
| 835 | if (*page == '\n') { |
| 836 | *line_pointer++ = page + 1; |
| 837 | |
| 838 | if (line_pointer >= top_line + nlines) { |
| 839 | top_line = (char **) XtRealloc((char *) top_line, (nlines + |
| 840 | ADD_MORE_MEM100) |
| 841 | * sizeof(char *)); |
| 842 | line_pointer = top_line + nlines; |
| 843 | nlines += ADD_MORE_MEM100; |
| 844 | } |
| 845 | } |
| 846 | page++; |
| 847 | } |
| 848 | |
| 849 | /* |
| 850 | * Realloc the line pointer space to take only the minimum amount of memory |
| 851 | */ |
| 852 | |
| 853 | sblw->scroll.lines = nlines = line_pointer - top_line - 1; |
| 854 | top_line = (char **) XtRealloc((char *) top_line, nlines * sizeof(char *)); |
| 855 | |
| 856 | /* |
| 857 | * Store the memory pointers |
| 858 | */ |
| 859 | |
| 860 | sblw->scroll.top_line = top_line; |
| 861 | sblw->scroll.line_pointer = 0; |
| 862 | SetThumbHeight(w); |
| 863 | SetThumb(w); |
| 864 | } |
| 865 | |
| 866 | #define NLINES66 66 /* This is the number of lines to wait until |
| 867 | we boldify the line again, this allows |
| 868 | me to bold the first line of each page. */ |
| 869 | #define BACKSPACE010 010 /* I doubt you would want to change this. */ |
| 870 | |
| 871 | #define NORMAL0 0 |
| 872 | #define BOLD1 1 |
| 873 | #define ITALIC2 2 |
| 874 | #define SYMBOL3 3 |
| 875 | #define WHICH(italic, bold)((bold) ? 1 : ((italic) ? 2 : 0)) ((bold) ? BOLD1 : ((italic) ? ITALIC2 : NORMAL0)) |
| 876 | /* Choose BOLD over ITALICS. If neither */ |
| 877 | /* is chosen, use NORMAL. */ |
| 878 | |
| 879 | static int DumpText(Widget w, int x_loc, int y_loc, char *buf, int len, |
| 880 | int format); |
| 881 | static Boolean Boldify(char *); |
| 882 | |
| 883 | /* Function Name: PrintText |
| 884 | * Description: This function actually prints the text. |
| 885 | * Arguments: w - the ScrollByLine widget. |
| 886 | * start_line - line to start printing, |
| 887 | * num_lines - the number of lines to print. |
| 888 | * location - the location to print the text. |
| 889 | * Returns: none. |
| 890 | */ |
| 891 | |
| 892 | /* ARGSUSED */ |
| 893 | static void |
| 894 | PrintText(Widget w, int start_line, int num_lines, int location) |
| 895 | { |
| 896 | ScrollByLineWidget sblw = (ScrollByLineWidget) w; |
| 897 | |
| 898 | register char *bufp, *c; /* Generic char pointers */ |
| 899 | int current_line; /* the number of the current line */ |
| 900 | char buf[BUFSIZ1024]; /* Misc. characters */ |
| 901 | Boolean italicflag = FALSE0; /* Print text in italics?? */ |
| 902 | Boolean first = TRUE1; /* First line of a manual page??? */ |
| 903 | int x_loc, y_loc; /* x and y location of text. */ |
| 904 | |
| 905 | /* |
| 906 | * For table hack |
| 907 | * To get columns to line up reasonably in most cases, make the |
| 908 | * assumption that they were lined up using lots of spaces, where |
| 909 | * lots is greater than two. Use a space width of 70% of the |
| 910 | * widest character in the font. |
| 911 | */ |
| 912 | int h_col, h_fix; |
| 913 | char *h_c; |
| 914 | |
| 915 | /* |
| 916 | * Nothing loaded, take no action. |
| 917 | */ |
| 918 | |
| 919 | if (sblw->scroll.top_line == NULL((void*)0) || num_lines == 0) |
| 920 | return; |
| 921 | |
| 922 | current_line = start_line; |
| 923 | |
| 924 | /* Set the first character to print at the first line. */ |
| 925 | |
| 926 | c = *(sblw->scroll.top_line + start_line); |
| 927 | |
| 928 | /* |
| 929 | * Because XDrawString uses the bottom of the text as a position |
| 930 | * reference, add the height from the top of the font to the baseline |
| 931 | * to the ScollByLine position reference. |
| 932 | */ |
| 933 | |
| 934 | y_loc = location + sblw->scroll.normal_font->max_bounds.ascent; |
| 935 | |
| 936 | /* |
| 937 | * Ok, here's the more than mildly heuristic man page formatter. |
| 938 | * We put chars into buf until either a font change or newline |
| 939 | * occurs (at which time we flush it to the screen.) |
| 940 | */ |
| 941 | |
| 942 | bufp = buf; |
| 943 | x_loc = sblw->scroll.offset + sblw->scroll.indent; |
| 944 | h_col = 0; |
| 945 | |
| 946 | /* |
| 947 | * A fix: |
| 948 | * Assume that we are always starting to print on or before the |
| 949 | * first line of a page, and then prove it if we aren't. |
| 950 | */ |
| 951 | for (h_fix = 1; h_fix <= (start_line % NLINES66); h_fix++) |
| 952 | if (**(sblw->scroll.top_line + start_line - h_fix) != '\n') { |
| 953 | first = FALSE0; |
| 954 | break; |
| 955 | } |
| 956 | |
| 957 | while (TRUE1) { |
| 958 | if (current_line % NLINES66 == 0) |
| 959 | first = TRUE1; |
| 960 | |
| 961 | /* |
| 962 | * Lets make sure that we do not run out of space in our buffer, making full |
| 963 | * use of it is not critical since no window will be wide enough to display |
| 964 | * nearly BUFSIZ characters. |
| 965 | */ |
| 966 | |
| 967 | if ((bufp - buf) > (BUFSIZ1024 - 10)) |
| 968 | /* Toss everything until we find a <CR> or the end of the buffer. */ |
| 969 | while ((*c != '\n') && (*c != '\0')) |
| 970 | c++; |
| 971 | |
| 972 | switch (*c) { |
| 973 | |
| 974 | case '\0': /* If we reach the end of the file then return */ |
| 975 | DumpText(w, x_loc, y_loc, buf, bufp - buf, |
| 976 | WHICH(italicflag, first)((first) ? 1 : ((italicflag) ? 2 : 0))); |
| 977 | return; |
| 978 | |
| 979 | case '\n': |
| 980 | if (bufp != buf) { |
| 981 | Boolean bold; |
| 982 | |
| 983 | *bufp = '\0'; /* for Boldify. */ |
| 984 | bold = ((first) || ((x_loc == (sblw->scroll.offset + |
| 985 | sblw->scroll.indent)) && |
| 986 | Boldify(buf))); |
| 987 | |
| 988 | (void) DumpText(w, x_loc, y_loc, buf, bufp - buf, |
| 989 | WHICH(italicflag, bold)((bold) ? 1 : ((italicflag) ? 2 : 0))); |
| 990 | |
| 991 | if (bold) |
| 992 | first = FALSE0; |
| 993 | } |
| 994 | |
| 995 | /* |
| 996 | * If we have painted the required number of lines then we should now return. |
| 997 | */ |
| 998 | if (++current_line == start_line + num_lines) |
| 999 | return; |
| 1000 | |
| 1001 | bufp = buf; |
| 1002 | italicflag = FALSE0; |
| 1003 | x_loc = sblw->scroll.offset + sblw->scroll.indent; |
| 1004 | h_col = 0; |
| 1005 | y_loc += sblw->scroll.font_height; |
| 1006 | break; |
| 1007 | |
| 1008 | /* |
| 1009 | * This tab handling code is not very clever it moves the cursor over |
| 1010 | * to the next boundary of eight (8) spaces, as calculated in width just |
| 1011 | * before the printing loop started. |
| 1012 | */ |
| 1013 | |
| 1014 | case '\t': /* TAB */ |
| 1015 | x_loc = DumpText(w, x_loc, y_loc, buf, bufp - buf, |
| 1016 | WHICH(italicflag, first)((first) ? 1 : ((italicflag) ? 2 : 0))); |
| 1017 | h_col += bufp - buf; |
| 1018 | bufp = buf; |
| 1019 | italicflag = FALSE0; |
| 1020 | x_loc = sblw->scroll.offset + sblw->scroll.indent; |
| 1021 | h_col = h_col + 8 - (h_col % 8); |
| 1022 | x_loc += sblw->scroll.h_width * h_col; |
| 1023 | break; |
| 1024 | |
| 1025 | case ' ': |
| 1026 | h_c = c + 1; |
| 1027 | while (*h_c == ' ') |
| 1028 | h_c++; |
| 1029 | |
| 1030 | if (h_c - c < 4) { |
| 1031 | *bufp++ = *c; |
| 1032 | break; |
| 1033 | } |
| 1034 | |
| 1035 | x_loc = DumpText(w, x_loc, y_loc, buf, bufp - buf, |
Value stored to 'x_loc' is never read | |
| 1036 | WHICH(italicflag, first)((first) ? 1 : ((italicflag) ? 2 : 0))); |
| 1037 | h_col += bufp - buf; |
| 1038 | bufp = buf; |
| 1039 | italicflag = FALSE0; |
| 1040 | |
| 1041 | x_loc = sblw->scroll.offset + sblw->scroll.indent; |
| 1042 | h_col += (h_c - c); |
| 1043 | x_loc += sblw->scroll.h_width * h_col; |
| 1044 | c = h_c - 1; |
| 1045 | break; |
| 1046 | |
| 1047 | case '\033': /* ignore esc sequences for now */ |
| 1048 | c++; /* should always be esc-x */ |
| 1049 | break; |
| 1050 | |
| 1051 | /* |
| 1052 | * Overstrike code supplied by: cs.utexas.edu!ut-emx!clyde@rutgers.edu |
| 1053 | * Since my manual pages do not have overstrike I couldn't test this. |
| 1054 | */ |
| 1055 | |
| 1056 | case BACKSPACE010: /* Backspacing for nroff bolding */ |
| 1057 | if (c[-1] == c[1] && c[1] != BACKSPACE010) { /* overstriking one char */ |
| 1058 | if (bufp > buf) { |
| 1059 | bufp--; /* Zap 1st instance of char to bolden */ |
| 1060 | x_loc = DumpText(w, x_loc, y_loc, buf, bufp - buf, |
| 1061 | WHICH(italicflag, FALSE)((0) ? 1 : ((italicflag) ? 2 : 0))); |
| 1062 | h_col += bufp - buf; |
| 1063 | } |
| 1064 | bufp = buf; |
| 1065 | *bufp++ = c[1]; |
| 1066 | x_loc = DumpText(w, x_loc, y_loc, buf, bufp - buf, BOLD1); |
| 1067 | h_col += bufp - buf; |
| 1068 | bufp = buf; |
| 1069 | first = FALSE0; |
| 1070 | |
| 1071 | /* |
| 1072 | * Nroff bolding looks like: |
| 1073 | * C\bC\bC\bCN... |
| 1074 | * c points to ----^ ^ |
| 1075 | * it needs to point to --^ |
| 1076 | */ |
| 1077 | while (*c == BACKSPACE010 && c[-1] == c[1]) |
| 1078 | c += 2; |
| 1079 | c--; /* Back up to previous char */ |
| 1080 | } |
| 1081 | else { |
| 1082 | if ((c[-1] == 'o' && c[1] == '+') /* Nroff bullet */ |
| 1083 | ||(c[-1] == '+' && c[1] == 'o')) { /* Nroff bullet */ |
| 1084 | /* If we run into a bullet, print out */ |
| 1085 | /* everything that's accumulated to this */ |
| 1086 | /* point, then the bullet, then resume. */ |
| 1087 | if (bufp > buf) { |
| 1088 | bufp--; |
| 1089 | x_loc = DumpText(w, x_loc, y_loc, buf, bufp - buf, |
| 1090 | WHICH(italicflag, FALSE)((0) ? 1 : ((italicflag) ? 2 : 0))); |
| 1091 | h_col += bufp - buf; |
| 1092 | } |
| 1093 | bufp = buf; |
| 1094 | *bufp = (char) 183; |
| 1095 | x_loc = DumpText(w, x_loc, y_loc, buf, 1, SYMBOL3); |
| 1096 | h_col++; |
| 1097 | c++; |
| 1098 | } |
| 1099 | else { /* 'real' backspace - back up output ptr */ |
| 1100 | if (bufp > buf) |
| 1101 | bufp--; |
| 1102 | } |
| 1103 | } |
| 1104 | break; |
| 1105 | |
| 1106 | /* End of contributed overstrike code. */ |
| 1107 | |
| 1108 | case '_': /* look for underlining [italicize] */ |
| 1109 | if (*(c + 1) == BACKSPACE010) { |
| 1110 | if (!italicflag) { /* font change? */ |
| 1111 | if (bufp != buf) { |
| 1112 | x_loc = |
| 1113 | DumpText(w, x_loc, y_loc, buf, bufp - buf, NORMAL0); |
| 1114 | h_col += bufp - buf; |
| 1115 | bufp = buf; |
| 1116 | } |
| 1117 | italicflag = TRUE1; |
| 1118 | } |
| 1119 | c += 2; |
| 1120 | *bufp++ = *c; |
| 1121 | break; |
| 1122 | } |
| 1123 | /* else fall through to default, because this was a real underscore. */ |
| 1124 | |
| 1125 | default: |
| 1126 | if (italicflag) { /* font change? */ |
| 1127 | if (bufp != buf) { |
| 1128 | x_loc = DumpText(w, x_loc, y_loc, buf, bufp - buf, |
| 1129 | WHICH(italicflag, FALSE)((0) ? 1 : ((italicflag) ? 2 : 0))); |
| 1130 | h_col += bufp - buf; |
| 1131 | bufp = buf; |
| 1132 | } |
| 1133 | italicflag = FALSE0; |
| 1134 | } |
| 1135 | *bufp++ = *c; |
| 1136 | break; |
| 1137 | } |
| 1138 | c++; |
| 1139 | } |
| 1140 | } |
| 1141 | |
| 1142 | /* Function Name: DumpText |
| 1143 | * Description: Dumps text to the screen. |
| 1144 | * Arguments: w - the widget. |
| 1145 | * x_loc - to dump text at. |
| 1146 | * y_loc - the y_location to draw_text. |
| 1147 | * buf - buffer to dump. |
| 1148 | * italic, bold, boolean that tells us which gc to use. |
| 1149 | * Returns: x_location of the end of the text. |
| 1150 | */ |
| 1151 | |
| 1152 | static int |
| 1153 | DumpText(Widget w, int x_loc, int y_loc, char *buf, int len, int format) |
| 1154 | { |
| 1155 | ScrollByLineWidget sblw = (ScrollByLineWidget) w; |
| 1156 | GC gc; |
| 1157 | XFontStruct *font; |
| 1158 | |
| 1159 | switch (format) { |
| 1160 | |
| 1161 | case ITALIC2: |
| 1162 | gc = sblw->scroll.italic_gc; |
| 1163 | font = sblw->scroll.italic_font; |
| 1164 | break; |
| 1165 | |
| 1166 | case BOLD1: |
| 1167 | gc = sblw->scroll.bold_gc; |
| 1168 | font = sblw->scroll.bold_font; |
| 1169 | break; |
| 1170 | |
| 1171 | case SYMBOL3: |
| 1172 | gc = sblw->scroll.symbol_gc; |
| 1173 | font = sblw->scroll.symbol_font; |
| 1174 | break; |
| 1175 | |
| 1176 | default: |
| 1177 | gc = sblw->scroll.normal_gc; |
| 1178 | font = sblw->scroll.normal_font; |
| 1179 | break; |
| 1180 | } |
| 1181 | |
| 1182 | XDrawString(XtDisplay(w)(((w)->core.screen)->display), XtWindow(w)((w)->core.window), gc, x_loc, y_loc, buf, len); |
| 1183 | return (x_loc + XTextWidth(font, buf, len)); |
| 1184 | } |
| 1185 | |
| 1186 | /* Function Name: Boldify |
| 1187 | * Description: look for keyword. |
| 1188 | * Arguments: sp - string pointer. |
| 1189 | * Returns: 1 if keyword else 0. |
| 1190 | */ |
| 1191 | |
| 1192 | static Boolean |
| 1193 | Boldify(register char *sp) |
| 1194 | { |
| 1195 | register char *sp_pointer; |
| 1196 | int length, count; |
| 1197 | |
| 1198 | /* |
| 1199 | * If there are not lower case letters in the line the assume it is a |
| 1200 | * keyword and boldify it in PrintManpage. |
| 1201 | */ |
| 1202 | |
| 1203 | length = strlen(sp); |
| 1204 | for (sp_pointer = sp, count = 0; count < length; sp_pointer++, count++) |
| 1205 | if (!isupper(*sp_pointer) && !isspace(*sp_pointer)) |
| 1206 | return (0); |
| 1207 | return (1); |
| 1208 | } |
| 1209 | |
| 1210 | #undef superclass |
| 1211 | #undef SuperClass |