gdb/tui/tui-regs.h

   1 /* TUI display registers in window.
   2
   3    Copyright (C) 1998-2022 Free Software Foundation, Inc.
   4
   5    Contributed by Hewlett-Packard Company.
   6
   7    This file is part of GDB.
   8
   9    This program is free software; you can redistribute it and/or modify
  10    it under the terms of the GNU General Public License as published by
  11    the Free Software Foundation; either version 3 of the License, or
  12    (at your option) any later version.
  13
  14    This program is distributed in the hope that it will be useful,
  15    but WITHOUT ANY WARRANTY; without even the implied warranty of
  16    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17    GNU General Public License for more details.
  18
  19    You should have received a copy of the GNU General Public License
  20    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
  21
  22 #ifndef TUI_TUI_REGS_H
  23 #define TUI_TUI_REGS_H
  24
  25 #include "tui/tui-data.h"
  26 #include "reggroups.h"
  27
  28 /* A data item window.  */
  29
  30 struct tui_data_item_window
  31 {
  32   tui_data_item_window () = default;
  33
  34   DISABLE_COPY_AND_ASSIGN (tui_data_item_window);
  35
  36   tui_data_item_window (tui_data_item_window &&) = default;
  37
  38   void rerender (WINDOW *handle, int field_width);
  39
  40   /* Location.  */
  41   int x = 0;
  42   int y = 0;
  43   /* The register number.  */
  44   int regno = -1;
  45   bool highlight = false;
  46   bool visible = false;
  47   std::string content;
  48 };
  49
  50 /* The TUI registers window.  */
  51 struct tui_data_window : public tui_win_info
  52 {
  53   tui_data_window () = default;
  54
  55   DISABLE_COPY_AND_ASSIGN (tui_data_window);
  56
  57   const char *name () const override
  58   {
  59     return DATA_NAME;
  60   }
  61
  62   void check_register_values (struct frame_info *frame);
  63
  64   void show_registers (const reggroup *group);
  65
  66   const reggroup *get_current_group () const
  67   {
  68     return m_current_group;
  69   }
  70
  71 protected:
  72
  73   void do_scroll_vertical (int num_to_scroll) override;
  74   void do_scroll_horizontal (int num_to_scroll) override
  75   {
  76   }
  77
  78   void rerender () override;
  79
  80 private:
  81
  82   /* Display the registers in the content from 'start_element_no'
  83      until the end of the register content or the end of the display
  84      height.  No checking for displaying past the end of the registers
  85      is done here.  */
  86   void display_registers_from (int start_element_no);
  87
  88   /* Display the registers starting at line line_no in the data
  89      window.  Answers the line number that the display actually
  90      started from.  If nothing is displayed (-1) is returned.  */
  91   int display_registers_from_line (int line_no);
  92
  93   /* Return the index of the first element displayed.  If none are
  94      displayed, then return -1.  */
  95   int first_data_item_displayed ();
  96
  97   /* Display the registers in the content from 'start_element_no' on
  98      'start_line_no' until the end of the register content or the end
  99      of the display height.  This function checks that we won't
 100      display off the end of the register display.  */
 101   void display_reg_element_at_line (int start_element_no, int start_line_no);
 102
 103   void show_register_group (const reggroup *group,
 104                             struct frame_info *frame,
 105                             bool refresh_values_only);
 106
 107   /* Answer the number of the last line in the regs display.  If there
 108      are no registers (-1) is returned.  */
 109   int last_regs_line_no () const;
 110
 111   /* Answer the line number that the register element at element_no is
 112      on.  If element_no is greater than the number of register
 113      elements there are, -1 is returned.  */
 114   int line_from_reg_element_no (int element_no) const;
 115
 116   /* Answer the index of the first element in line_no.  If line_no is
 117      past the register area (-1) is returned.  */
 118   int first_reg_element_no_inline (int line_no) const;
 119
 120   /* Delete all the item windows in the data window.  This is usually
 121      done when the data window is scrolled.  */
 122   void delete_data_content_windows ();
 123
 124   void erase_data_content (const char *prompt);
 125
 126   /* Windows that are used to display registers.  */
 127   std::vector<tui_data_item_window> m_regs_content;
 128   int m_regs_column_count = 0;
 129   const reggroup *m_current_group = nullptr;
 130
 131   /* Width of each register's display area.  */
 132   int m_item_width = 0;
 133 };
 134
 135 #endif /* TUI_TUI_REGS_H */