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       tui_delete_win (dataItemWinPtr->handle);
 116       dataItemWinPtr->handle = (WINDOW *) NULL;
 117       dataItemWinPtr->isVisible = FALSE;
 118     }
 119
 120   return;
 121 }                               /* tuiDeleteDataContentWindows */
 122
 123
 124 void
 125 tui_erase_data_content (char *prompt)
 126 {
 127   werase (dataWin->generic.handle);
 128   tui_check_and_display_highlight_if_needed (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
 146
 147 /* This function displays the data that is in the data window's
 148    content.  It does not set the content.  */
 149 void
 150 tui_display_all_data (void)
 151 {
 152   if (dataWin->generic.contentSize <= 0)
 153     tui_erase_data_content (NO_DATA_STRING);
 154   else
 155     {
 156       tui_erase_data_content ((char *) NULL);
 157       tuiDeleteDataContentWindows ();
 158       tui_check_and_display_highlight_if_needed (dataWin);
 159       tui_display_registers_from (0);
 160       /*
 161          ** Then display the other data
 162        */
 163       if (dataWin->detail.dataDisplayInfo.dataContent !=
 164           (TuiWinContent) NULL &&
 165           dataWin->detail.dataDisplayInfo.dataContentCount > 0)
 166         {
 167         }
 168     }
 169 }
 170
 171
 172 /*
 173    ** tuiDisplayDataFromLine()
 174    **        Function to display the data starting at line, lineNo, in the
 175    **        data window.
 176  */
 177 void
 178 tuiDisplayDataFromLine (int lineNo)
 179 {
 180   int _lineNo = lineNo;
 181
 182   if (lineNo < 0)
 183     _lineNo = 0;
 184
 185   tui_check_and_display_highlight_if_needed (dataWin);
 186
 187   /* there is no general data, force regs to display (if there are any) */
 188   if (dataWin->detail.dataDisplayInfo.dataContentCount <= 0)
 189     tui_display_registers_from_line (_lineNo, TRUE);
 190   else
 191     {
 192       int elementNo, startLineNo;
 193       int regsLastLine = tui_last_regs_line_no ();
 194
 195
 196       /* display regs if we can */
 197       if (tui_display_registers_from_line (_lineNo, FALSE) < 0)
 198         {                       /*
 199                                    ** _lineNo is past the regs display, so calc where the
 200                                    ** start data element is
 201                                  */
 202           if (regsLastLine < _lineNo)
 203             {                   /* figure out how many lines each element is to obtain
 204                                    the start elementNo */
 205             }
 206         }
 207       else
 208         {                       /*
 209                                    ** calculate the starting element of the data display, given
 210                                    ** regsLastLine and how many lines each element is, up to
 211                                    ** _lineNo
 212                                  */
 213         }
 214       /* Now display the data , starting at elementNo */
 215     }
 216
 217   return;
 218 }                               /* tuiDisplayDataFromLine */
 219
 220
 221 /*
 222    ** tuiDisplayDataFrom()
 223    **        Display data starting at element elementNo
 224  */
 225 void
 226 tuiDisplayDataFrom (int elementNo, int reuseWindows)
 227 {
 228   int firstLine = (-1);
 229
 230   if (elementNo < dataWin->detail.dataDisplayInfo.regsContentCount)
 231     firstLine = tui_line_from_reg_element_no (elementNo);
 232   else
 233     {                           /* calculate the firstLine from the element number */
 234     }
 235
 236   if (firstLine >= 0)
 237     {
 238       tui_erase_data_content ((char *) NULL);
 239       if (!reuseWindows)
 240         tuiDeleteDataContentWindows ();
 241       tuiDisplayDataFromLine (firstLine);
 242     }
 243
 244   return;
 245 }                               /* tuiDisplayDataFrom */
 246
 247
 248 /* Function to redisplay the contents of the data window.  */
 249 void
 250 tui_refresh_data_win (void)
 251 {
 252   tui_erase_data_content ((char *) NULL);
 253   if (dataWin->generic.contentSize > 0)
 254     {
 255       int firstElement = tuiFirstDataItemDisplayed ();
 256
 257       if (firstElement >= 0)    /* re-use existing windows */
 258         tuiDisplayDataFrom (firstElement, TRUE);
 259     }
 260 }
 261
 262
 263 /* Function to check the data values and hilite any that have changed.  */
 264 void
 265 tui_check_data_values (struct frame_info *frame)
 266 {
 267   tui_check_register_values (frame);
 268
 269   /* Now check any other data values that there are */
 270   if (m_winPtrNotNull (dataWin) && dataWin->generic.isVisible)
 271     {
 272       int i;
 273
 274       for (i = 0; dataWin->detail.dataDisplayInfo.dataContentCount; i++)
 275         {
 276 #ifdef LATER
 277           TuiDataElementPtr dataElementPtr;
 278           TuiGenWinInfoPtr dataItemWinPtr;
 279           Opaque newValue;
 280
 281           dataItemPtr = &dataWin->detail.dataDisplayInfo.
 282             dataContent[i]->whichElement.dataWindow;
 283           dataElementPtr = &((TuiWinContent)
 284                              dataItemWinPtr->content)[0]->whichElement.data;
 285           if value
 286             has changed (dataElementPtr, frame, &newValue)
 287             {
 288               dataElementPtr->value = newValue;
 289               update the display with the new value, hiliting it.
 290             }
 291 #endif
 292         }
 293     }
 294 }
 295
 296
 297 /* Scroll the data window vertically forward or backward.   */
 298 void
 299 tui_vertical_data_scroll (TuiScrollDirection scrollDirection, int numToScroll)
 300 {
 301   int firstElementNo;
 302   int firstLine = (-1);
 303
 304   firstElementNo = tuiFirstDataItemDisplayed ();
 305   if (firstElementNo < dataWin->detail.dataDisplayInfo.regsContentCount)
 306     firstLine = tui_line_from_reg_element_no (firstElementNo);
 307   else
 308     {                           /* calculate the first line from the element number which is in
 309                                    ** the general data content
 310                                  */
 311     }
 312
 313   if (firstLine >= 0)
 314     {
 315       int lastElementNo, lastLine;
 316
 317       if (scrollDirection == FORWARD_SCROLL)
 318         firstLine += numToScroll;
 319       else
 320         firstLine -= numToScroll;
 321       tui_erase_data_content ((char *) NULL);
 322       tuiDeleteDataContentWindows ();
 323       tuiDisplayDataFromLine (firstLine);
 324     }
 325
 326   return;
 327 }                               /* tuiVerticalDataScroll */
 328
 329
 330 /*****************************************
 331 ** STATIC LOCAL FUNCTIONS               **
 332 ******************************************/