gdb/tui/tui-windata.c

   1 /* Data/register window display.
   2
   3    Copyright 1998, 1999, 2000, 2001, 2002, 2003, 2004 Free Software
   4    Foundation, Inc.
   5
   6    Contributed by Hewlett-Packard Company.
   7
   8    This file is part of GDB.
   9
  10    This program is free software; you can redistribute it and/or modify
  11    it under the terms of the GNU General Public License as published by
  12    the Free Software Foundation; either version 2 of the License, or
  13    (at your option) any later version.
  14
  15    This program is distributed in the hope that it will be useful,
  16    but WITHOUT ANY WARRANTY; without even the implied warranty of
  17    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18    GNU General Public License for more details.
  19
  20    You should have received a copy of the GNU General Public License
  21    along with this program; if not, write to the Free Software
  22    Foundation, Inc., 59 Temple Place - Suite 330,
  23    Boston, MA 02111-1307, USA.  */
  24
  25 #include "defs.h"
  26 #include "tui/tui.h"
  27 #include "tui/tui-data.h"
  28 #include "tui/tui-wingeneral.h"
  29 #include "tui/tui-regs.h"
  30
  31 #ifdef HAVE_NCURSES_H
  32 #include <ncurses.h>
  33 #else
  34 #ifdef HAVE_CURSES_H
  35 #include <curses.h>
  36 #endif
  37 #endif
  38
  39
  40 /*****************************************
  41 ** STATIC LOCAL FUNCTIONS FORWARD DECLS    **
  42 ******************************************/
  43
  44
  45
  46 /*****************************************
  47 ** PUBLIC FUNCTIONS                        **
  48 ******************************************/
  49
  50
  51 /*
  52    ** tuiFirstDataItemDisplayed()
  53    **    Answer the index first element displayed.
  54    **    If none are displayed, then return (-1).
  55  */
  56 int
  57 tuiFirstDataItemDisplayed (void)
  58 {
  59   int elementNo = (-1);
  60   int i;
  61
  62   for (i = 0; (i < dataWin->generic.contentSize && elementNo < 0); i++)
  63     {
  64       TuiGenWinInfoPtr dataItemWin;
  65
  66       dataItemWin = &((TuiWinContent)
  67                       dataWin->generic.content)[i]->whichElement.dataWindow;
  68       if (dataItemWin->handle != (WINDOW *) NULL && dataItemWin->isVisible)
  69         elementNo = i;
  70     }
  71
  72   return elementNo;
  73 }                               /* tuiFirstDataItemDisplayed */
  74
  75
  76 /*
  77    ** tuiFirstDataElementNoInLine()
  78    **        Answer the index of the first element in lineNo.  If lineNo is
  79    **        past the data area (-1) is returned.
  80  */
  81 int
  82 tuiFirstDataElementNoInLine (int lineNo)
  83 {
  84   int firstElementNo = (-1);
  85
  86   /*
  87      ** First see if there is a register on lineNo, and if so, set the
  88      ** first element number
  89    */
  90   if ((firstElementNo = tui_first_reg_element_no_inline (lineNo)) == -1)
  91     {                           /*
  92                                    ** Looking at the general data, the 1st element on lineNo
  93                                  */
  94     }
  95
  96   return firstElementNo;
  97 }                               /* tuiFirstDataElementNoInLine */
  98
  99
 100 /*
 101    ** tuiDeleteDataContentWindows()
 102    **        Function to delete all the item windows in the data window.
 103    **        This is usually done when the data window is scrolled.
 104  */
 105 void
 106 tuiDeleteDataContentWindows (void)
 107 {
 108   int i;
 109   TuiGenWinInfoPtr dataItemWinPtr;
 110
 111   for (i = 0; (i < dataWin->generic.contentSize); i++)
 112     {
 113       dataItemWinPtr = &((TuiWinContent)
 114                       dataWin->generic.content)[i]->whichElement.dataWindow;
 115       tuiDelwin (dataItemWinPtr->handle);
 116       dataItemWinPtr->handle = (WINDOW *) NULL;
 117       dataItemWinPtr->isVisible = FALSE;
 118     }
 119
 120   return;
 121 }                               /* tuiDeleteDataContentWindows */
 122
 123
 124 void
 125 tuiEraseDataContent (char *prompt)
 126 {
 127   werase (dataWin->generic.handle);
 128   checkAndDisplayHighlightIfNeeded (dataWin);
 129   if (prompt != (char *) NULL)
 130     {
 131       int halfWidth = (dataWin->generic.width - 2) / 2;
 132       int xPos;
 133
 134       if (strlen (prompt) >= halfWidth)
 135         xPos = 1;
 136       else
 137         xPos = halfWidth - strlen (prompt);
 138       mvwaddstr (dataWin->generic.handle,
 139                  (dataWin->generic.height / 2),
 140                  xPos,
 141                  prompt);
 142     }
 143   wrefresh (dataWin->generic.handle);
 144
 145   return;
 146 }                               /* tuiEraseDataContent */
 147
 148
 149 /*
 150    ** tuiDisplayAllData().
 151    **        This function displays the data that is in the data window's
 152    **        content.  It does not set the content.
 153  */
 154 void
 155 tuiDisplayAllData (void)
 156 {
 157   if (dataWin->generic.contentSize <= 0)
 158     tuiEraseDataContent (NO_DATA_STRING);
 159   else
 160     {
 161       tuiEraseDataContent ((char *) NULL);
 162       tuiDeleteDataContentWindows ();
 163       checkAndDisplayHighlightIfNeeded (dataWin);
 164       tui_display_registers_from (0);
 165       /*
 166          ** Then display the other data
 167        */
 168       if (dataWin->detail.dataDisplayInfo.dataContent !=
 169           (TuiWinContent) NULL &&
 170           dataWin->detail.dataDisplayInfo.dataContentCount > 0)
 171         {
 172         }
 173     }
 174   return;
 175 }                               /* tuiDisplayAllData */
 176
 177
 178 /*
 179    ** tuiDisplayDataFromLine()
 180    **        Function to display the data starting at line, lineNo, in the
 181    **        data window.
 182  */
 183 void
 184 tuiDisplayDataFromLine (int lineNo)
 185 {
 186   int _lineNo = lineNo;
 187
 188   if (lineNo < 0)
 189     _lineNo = 0;
 190
 191   checkAndDisplayHighlightIfNeeded (dataWin);
 192
 193   /* there is no general data, force regs to display (if there are any) */
 194   if (dataWin->detail.dataDisplayInfo.dataContentCount <= 0)
 195     tui_display_registers_from_line (_lineNo, TRUE);
 196   else
 197     {
 198       int elementNo, startLineNo;
 199       int regsLastLine = tui_last_regs_line_no ();
 200
 201
 202       /* display regs if we can */
 203       if (tui_display_registers_from_line (_lineNo, FALSE) < 0)
 204         {                       /*
 205                                    ** _lineNo is past the regs display, so calc where the
 206                                    ** start data element is
 207                                  */
 208           if (regsLastLine < _lineNo)
 209             {                   /* figure out how many lines each element is to obtain
 210                                    the start elementNo */
 211             }
 212         }
 213       else
 214         {                       /*
 215                                    ** calculate the starting element of the data display, given
 216                                    ** regsLastLine and how many lines each element is, up to
 217                                    ** _lineNo
 218                                  */
 219         }
 220       /* Now display the data , starting at elementNo */
 221     }
 222
 223   return;
 224 }                               /* tuiDisplayDataFromLine */
 225
 226
 227 /*
 228    ** tuiDisplayDataFrom()
 229    **        Display data starting at element elementNo
 230  */
 231 void
 232 tuiDisplayDataFrom (int elementNo, int reuseWindows)
 233 {
 234   int firstLine = (-1);
 235
 236   if (elementNo < dataWin->detail.dataDisplayInfo.regsContentCount)
 237     firstLine = tui_line_from_reg_element_no (elementNo);
 238   else
 239     {                           /* calculate the firstLine from the element number */
 240     }
 241
 242   if (firstLine >= 0)
 243     {
 244       tuiEraseDataContent ((char *) NULL);
 245       if (!reuseWindows)
 246         tuiDeleteDataContentWindows ();
 247       tuiDisplayDataFromLine (firstLine);
 248     }
 249
 250   return;
 251 }                               /* tuiDisplayDataFrom */
 252
 253
 254 /*
 255    ** tuiRefreshDataWin()
 256    **        Function to redisplay the contents of the data window.
 257  */
 258 void
 259 tuiRefreshDataWin (void)
 260 {
 261   tuiEraseDataContent ((char *) NULL);
 262   if (dataWin->generic.contentSize > 0)
 263     {
 264       int firstElement = tuiFirstDataItemDisplayed ();
 265
 266       if (firstElement >= 0)    /* re-use existing windows */
 267         tuiDisplayDataFrom (firstElement, TRUE);
 268     }
 269
 270   return;
 271 }                               /* tuiRefreshDataWin */
 272
 273
 274 /*
 275    ** tuiCheckDataValues().
 276    **        Function to check the data values and hilite any that have changed
 277  */
 278 void
 279 tuiCheckDataValues (struct frame_info *frame)
 280 {
 281   tui_check_register_values (frame);
 282
 283   /* Now check any other data values that there are */
 284   if (m_winPtrNotNull (dataWin) && dataWin->generic.isVisible)
 285     {
 286       int i;
 287
 288       for (i = 0; dataWin->detail.dataDisplayInfo.dataContentCount; i++)
 289         {
 290 #ifdef LATER
 291           TuiDataElementPtr dataElementPtr;
 292           TuiGenWinInfoPtr dataItemWinPtr;
 293           Opaque newValue;
 294
 295           dataItemPtr = &dataWin->detail.dataDisplayInfo.
 296             dataContent[i]->whichElement.dataWindow;
 297           dataElementPtr = &((TuiWinContent)
 298                              dataItemWinPtr->content)[0]->whichElement.data;
 299           if value
 300             has changed (dataElementPtr, frame, &newValue)
 301             {
 302               dataElementPtr->value = newValue;
 303               update the display with the new value, hiliting it.
 304             }
 305 #endif
 306         }
 307     }
 308 }                               /* tuiCheckDataValues */
 309
 310
 311 /*
 312    ** tuiVerticalDataScroll()
 313    **        Scroll the data window vertically forward or backward.
 314  */
 315 void
 316 tuiVerticalDataScroll (TuiScrollDirection scrollDirection, int numToScroll)
 317 {
 318   int firstElementNo;
 319   int firstLine = (-1);
 320
 321   firstElementNo = tuiFirstDataItemDisplayed ();
 322   if (firstElementNo < dataWin->detail.dataDisplayInfo.regsContentCount)
 323     firstLine = tui_line_from_reg_element_no (firstElementNo);
 324   else
 325     {                           /* calculate the first line from the element number which is in
 326                                    ** the general data content
 327                                  */
 328     }
 329
 330   if (firstLine >= 0)
 331     {
 332       int lastElementNo, lastLine;
 333
 334       if (scrollDirection == FORWARD_SCROLL)
 335         firstLine += numToScroll;
 336       else
 337         firstLine -= numToScroll;
 338       tuiEraseDataContent ((char *) NULL);
 339       tuiDeleteDataContentWindows ();
 340       tuiDisplayDataFromLine (firstLine);
 341     }
 342
 343   return;
 344 }                               /* tuiVerticalDataScroll */
 345
 346
 347 /*****************************************
 348 ** STATIC LOCAL FUNCTIONS               **
 349 ******************************************/