gcc/text-art/canvas.h

   1 /* Canvas for random-access procedural text art.
   2    Copyright (C) 2023 Free Software Foundation, Inc.
   3    Contributed by David Malcolm <dmalcolm@redhat.com>.
   4
   5 This file is part of GCC.
   6
   7 GCC is free software; you can redistribute it and/or modify it
   8 under the terms of the GNU General Public License as published by
   9 the Free Software Foundation; either version 3, or (at your option)
  10 any later version.
  11
  12 GCC is distributed in the hope that it will be useful, but
  13 WITHOUT ANY WARRANTY; without even the implied warranty of
  14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15 General Public License for more details.
  16
  17 You should have received a copy of the GNU General Public License
  18 along with GCC; see the file COPYING3.  If not see
  19 <http://www.gnu.org/licenses/>.  */
  20
  21 #ifndef GCC_TEXT_ART_CANVAS_H
  22 #define GCC_TEXT_ART_CANVAS_H
  23
  24 #include "text-art/types.h"
  25
  26 namespace text_art {
  27
  28 class canvas;
  29
  30 /* A 2 dimensional grid of text cells (a "canvas"), which
  31    can be written to ("painted") via random access, and then
  32    written out to a pretty_printer once the picture is complete.
  33
  34    Each text cell can be styled independently (colorization,
  35    URLs, etc).  */
  36
  37 class canvas
  38 {
  39  public:
  40   typedef styled_unichar cell_t;
  41   typedef size<class canvas> size_t;
  42   typedef coord<class canvas> coord_t;
  43   typedef range<class canvas> range_t;
  44   typedef rect<class canvas> rect_t;
  45
  46   canvas (size_t size, const style_manager &style_mgr);
  47
  48   size_t get_size () const { return m_cells.get_size (); }
  49
  50   void paint (coord_t coord, cell_t c);
  51   void paint_text (coord_t coord, const styled_string &text);
  52
  53   void fill (rect_t rect, cell_t c);
  54   void debug_fill ();
  55
  56   void print_to_pp (pretty_printer *pp,
  57                     const char *per_line_prefix = NULL) const;
  58   void debug (bool styled) const;
  59
  60   const cell_t &get (coord_t coord) const
  61   {
  62     return m_cells.get (coord);
  63   }
  64
  65  private:
  66   int get_final_x_in_row (int y) const;
  67
  68   array2<cell_t, size_t, coord_t> m_cells;
  69   const style_manager &m_style_mgr;
  70 };
  71
  72 } // namespace text_art
  73
  74 #endif /* GCC_TEXT_ART_CANVAS_H */