gdb/tui/tuiDataWin.c

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