vim-patch:8.1.2057: the screen.c file is much too big

Problem:    The screen.c file is much too big.
Solution:   Split it in three parts. (Yegappan Lakshmanan, closes vim/vim#4943)
7528d1f6b5

This is an approximation vim-patch 8.1.2057. Applying the patch directly
isn't feasible since our version of screen.c has diverged too much,
however we still introduce drawscreen.c and drawline.c:
- screen.c is now a much smaller file used for low level screen functions
- drawline.c contains everything needed for win_line()
- drawscreen.c contains everything needed for update_screen()

Co-authored-by: zeertzjq <zeertzjq@outlook.com>

src/nvim/api/buffer.c

@@ -18,6 +18,7 @@
 #include "nvim/change.h"
 #include "nvim/cursor.h"
 #include "nvim/decoration.h"
+#include "nvim/drawscreen.h"
 #include "nvim/ex_cmds.h"
 #include "nvim/ex_docmd.h"
 #include "nvim/extmark.h"
@@ -28,7 +29,6 @@
 #include "nvim/memory.h"
 #include "nvim/move.h"
 #include "nvim/ops.h"
-#include "nvim/screen.h"
 #include "nvim/undo.h"
 #include "nvim/vim.h"
 #include "nvim/window.h"

src/nvim/api/extmark.c

@@ -10,11 +10,11 @@
 #include "nvim/api/private/helpers.h"
 #include "nvim/charset.h"
 #include "nvim/decoration_provider.h"
+#include "nvim/drawscreen.h"
 #include "nvim/extmark.h"
 #include "nvim/highlight_group.h"
 #include "nvim/lua/executor.h"
 #include "nvim/memline.h"
-#include "nvim/screen.h"
 
 #ifdef INCLUDE_GENERATED_DECLARATIONS
 # include "api/extmark.c.generated.h"

src/nvim/api/vim.c

@@ -23,6 +23,7 @@
 #include "nvim/context.h"
 #include "nvim/decoration.h"
 #include "nvim/decoration_provider.h"
+#include "nvim/drawscreen.h"
 #include "nvim/edit.h"
 #include "nvim/eval.h"
 #include "nvim/eval/typval.h"
@@ -55,7 +56,6 @@
 #include "nvim/os/process.h"
 #include "nvim/popupmenu.h"
 #include "nvim/runtime.h"
-#include "nvim/screen.h"
 #include "nvim/state.h"
 #include "nvim/types.h"
 #include "nvim/ui.h"

src/nvim/api/win_config.c

@@ -10,9 +10,9 @@
 #include "nvim/api/private/helpers.h"
 #include "nvim/api/win_config.h"
 #include "nvim/ascii.h"
+#include "nvim/drawscreen.h"
 #include "nvim/highlight_group.h"
 #include "nvim/option.h"
-#include "nvim/screen.h"
 #include "nvim/strings.h"
 #include "nvim/syntax.h"
 #include "nvim/ui.h"

src/nvim/api/window.c

@@ -12,12 +12,12 @@
 #include "nvim/ascii.h"
 #include "nvim/buffer.h"
 #include "nvim/cursor.h"
+#include "nvim/drawscreen.h"
 #include "nvim/ex_docmd.h"
 #include "nvim/globals.h"
 #include "nvim/lua/executor.h"
 #include "nvim/move.h"
 #include "nvim/option.h"
-#include "nvim/screen.h"
 #include "nvim/syntax.h"
 #include "nvim/vim.h"
 #include "nvim/window.h"

src/nvim/autocmd.c

@@ -11,6 +11,7 @@
 #include "nvim/buffer.h"
 #include "nvim/charset.h"
 #include "nvim/cursor.h"
+#include "nvim/drawscreen.h"
 #include "nvim/edit.h"
 #include "nvim/eval.h"
 #include "nvim/eval/userfunc.h"
@@ -29,7 +30,6 @@
 #include "nvim/profile.h"
 #include "nvim/regexp.h"
 #include "nvim/runtime.h"
-#include "nvim/screen.h"
 #include "nvim/search.h"
 #include "nvim/state.h"
 #include "nvim/ui_compositor.h"

src/nvim/buffer.c

@@ -38,6 +38,7 @@
 #include "nvim/decoration.h"
 #include "nvim/diff.h"
 #include "nvim/digraph.h"
+#include "nvim/drawscreen.h"
 #include "nvim/eval.h"
 #include "nvim/eval/vars.h"
 #include "nvim/ex_cmds.h"
@@ -73,7 +74,6 @@
 #include "nvim/quickfix.h"
 #include "nvim/regexp.h"
 #include "nvim/runtime.h"
-#include "nvim/screen.h"
 #include "nvim/sign.h"
 #include "nvim/spell.h"
 #include "nvim/strings.h"

src/nvim/change.c

@@ -10,6 +10,7 @@
 #include "nvim/charset.h"
 #include "nvim/cursor.h"
 #include "nvim/diff.h"
+#include "nvim/drawscreen.h"
 #include "nvim/edit.h"
 #include "nvim/eval.h"
 #include "nvim/extmark.h"
@@ -23,7 +24,6 @@
 #include "nvim/move.h"
 #include "nvim/option.h"
 #include "nvim/plines.h"
-#include "nvim/screen.h"
 #include "nvim/search.h"
 #include "nvim/state.h"
 #include "nvim/ui.h"

src/nvim/cursor.c

@@ -9,6 +9,7 @@
 #include "nvim/change.h"
 #include "nvim/charset.h"
 #include "nvim/cursor.h"
+#include "nvim/drawscreen.h"
 #include "nvim/extmark.h"
 #include "nvim/fold.h"
 #include "nvim/mark.h"
@@ -17,7 +18,6 @@
 #include "nvim/move.h"
 #include "nvim/option.h"
 #include "nvim/plines.h"
-#include "nvim/screen.h"
 #include "nvim/state.h"
 #include "nvim/vim.h"
 

src/nvim/debugger.c

@@ -8,6 +8,7 @@
 #include "nvim/ascii.h"
 #include "nvim/charset.h"
 #include "nvim/debugger.h"
+#include "nvim/drawscreen.h"
 #include "nvim/eval.h"
 #include "nvim/ex_docmd.h"
 #include "nvim/ex_getln.h"
@@ -18,7 +19,6 @@
 #include "nvim/pos.h"
 #include "nvim/regexp.h"
 #include "nvim/runtime.h"
-#include "nvim/screen.h"
 #include "nvim/types.h"
 #include "nvim/vim.h"
 

src/nvim/decoration.c

@@ -4,12 +4,12 @@
 #include "nvim/api/ui.h"
 #include "nvim/buffer.h"
 #include "nvim/decoration.h"
+#include "nvim/drawscreen.h"
 #include "nvim/extmark.h"
 #include "nvim/highlight.h"
 #include "nvim/highlight_group.h"
 #include "nvim/lua/executor.h"
 #include "nvim/move.h"
-#include "nvim/screen.h"
 #include "nvim/vim.h"
 
 #ifdef INCLUDE_GENERATED_DECLARATIONS

src/nvim/diff.c

@@ -20,6 +20,7 @@
 #include "nvim/charset.h"
 #include "nvim/cursor.h"
 #include "nvim/diff.h"
+#include "nvim/drawscreen.h"
 #include "nvim/eval.h"
 #include "nvim/ex_cmds.h"
 #include "nvim/ex_docmd.h"
@@ -36,7 +37,6 @@
 #include "nvim/os/os.h"
 #include "nvim/os/shell.h"
 #include "nvim/path.h"
-#include "nvim/screen.h"
 #include "nvim/strings.h"
 #include "nvim/ui.h"
 #include "nvim/undo.h"

src/nvim/digraph.c

@@ -12,6 +12,7 @@
 #include "nvim/ascii.h"
 #include "nvim/charset.h"
 #include "nvim/digraph.h"
+#include "nvim/drawscreen.h"
 #include "nvim/eval/typval.h"
 #include "nvim/ex_docmd.h"
 #include "nvim/ex_getln.h"
@@ -24,7 +25,6 @@
 #include "nvim/normal.h"
 #include "nvim/os/input.h"
 #include "nvim/runtime.h"
-#include "nvim/screen.h"
 #include "nvim/strings.h"
 #include "nvim/vim.h"
 

src/nvim/drawline.h

@@ -0,0 +1,24 @@
+#ifndef NVIM_DRAWLINE_H
+#define NVIM_DRAWLINE_H
+
+#include "nvim/decoration_provider.h"
+#include "nvim/fold.h"
+#include "nvim/screen.h"
+
+// Maximum columns for terminal highlight attributes
+#define TERM_ATTRS_MAX 1024
+
+typedef struct {
+  NS ns_id;
+  uint64_t mark_id;
+  int win_row;
+  int win_col;
+} WinExtmark;
+EXTERN kvec_t(WinExtmark) win_extmark_arr INIT(= KV_INITIAL_VALUE);
+
+EXTERN bool conceal_cursor_used INIT(= false);
+
+#ifdef INCLUDE_GENERATED_DECLARATIONS
+# include "drawline.h.generated.h"
+#endif
+#endif  // NVIM_DRAWLINE_H

src/nvim/drawscreen.h

@@ -0,0 +1,25 @@
+#ifndef NVIM_DRAWSCREEN_H
+#define NVIM_DRAWSCREEN_H
+
+#include "nvim/drawline.h"
+
+/// flags for update_screen()
+/// The higher the value, the higher the priority
+enum {
+  VALID        = 10,  ///< buffer not changed, or changes marked with b_mod_*
+  INVERTED     = 20,  ///< redisplay inverted part that changed
+  INVERTED_ALL = 25,  ///< redisplay whole inverted part
+  REDRAW_TOP   = 30,  ///< display first w_upd_rows screen lines
+  SOME_VALID   = 35,  ///< like NOT_VALID but may scroll
+  NOT_VALID    = 40,  ///< buffer needs complete redraw
+  CLEAR        = 50,  ///< screen messed up, clear it
+};
+
+/// While redrawing the screen this flag is set.  It means the screen size
+/// ('lines' and 'rows') must not be changed.
+EXTERN bool updating_screen INIT(= 0);
+
+#ifdef INCLUDE_GENERATED_DECLARATIONS
+# include "drawscreen.h.generated.h"
+#endif
+#endif  // NVIM_DRAWSCREEN_H

src/nvim/edit.c

@@ -16,6 +16,7 @@
 #include "nvim/charset.h"
 #include "nvim/cursor.h"
 #include "nvim/digraph.h"
+#include "nvim/drawscreen.h"
 #include "nvim/edit.h"
 #include "nvim/eval.h"
 #include "nvim/event/loop.h"
@@ -49,7 +50,6 @@
 #include "nvim/plines.h"
 #include "nvim/popupmenu.h"
 #include "nvim/quickfix.h"
-#include "nvim/screen.h"
 #include "nvim/search.h"
 #include "nvim/spell.h"
 #include "nvim/state.h"

src/nvim/eval/vars.c

@@ -7,6 +7,7 @@
 #include "nvim/autocmd.h"
 #include "nvim/buffer.h"
 #include "nvim/charset.h"
+#include "nvim/drawscreen.h"
 #include "nvim/eval.h"
 #include "nvim/eval/encode.h"
 #include "nvim/eval/funcs.h"

src/nvim/ex_cmds.c

@@ -26,6 +26,7 @@
 #include "nvim/decoration.h"
 #include "nvim/diff.h"
 #include "nvim/digraph.h"
+#include "nvim/drawscreen.h"
 #include "nvim/edit.h"
 #include "nvim/eval.h"
 #include "nvim/ex_cmds.h"
@@ -65,7 +66,6 @@
 #include "nvim/profile.h"
 #include "nvim/quickfix.h"
 #include "nvim/regexp.h"
-#include "nvim/screen.h"
 #include "nvim/search.h"
 #include "nvim/spell.h"
 #include "nvim/strings.h"

src/nvim/ex_docmd.c

@@ -19,6 +19,7 @@
 #include "nvim/debugger.h"
 #include "nvim/diff.h"
 #include "nvim/digraph.h"
+#include "nvim/drawscreen.h"
 #include "nvim/edit.h"
 #include "nvim/eval.h"
 #include "nvim/eval/userfunc.h"
@@ -69,7 +70,6 @@
 #include "nvim/profile.h"
 #include "nvim/quickfix.h"
 #include "nvim/regexp.h"
-#include "nvim/screen.h"
 #include "nvim/search.h"
 #include "nvim/shada.h"
 #include "nvim/sign.h"

src/nvim/ex_getln.c

@@ -24,6 +24,7 @@
 #include "nvim/cursor.h"
 #include "nvim/cursor_shape.h"
 #include "nvim/digraph.h"
+#include "nvim/drawscreen.h"
 #include "nvim/edit.h"
 #include "nvim/eval.h"
 #include "nvim/eval/funcs.h"
@@ -70,7 +71,6 @@
 #include "nvim/popupmenu.h"
 #include "nvim/profile.h"
 #include "nvim/regexp.h"
-#include "nvim/screen.h"
 #include "nvim/search.h"
 #include "nvim/sign.h"
 #include "nvim/state.h"

src/nvim/fileio.c

@@ -18,6 +18,7 @@
 #include "nvim/charset.h"
 #include "nvim/cursor.h"
 #include "nvim/diff.h"
+#include "nvim/drawscreen.h"
 #include "nvim/edit.h"
 #include "nvim/eval.h"
 #include "nvim/eval/typval.h"
@@ -49,7 +50,6 @@
 #include "nvim/path.h"
 #include "nvim/quickfix.h"
 #include "nvim/regexp.h"
-#include "nvim/screen.h"
 #include "nvim/search.h"
 #include "nvim/sha256.h"
 #include "nvim/shada.h"

src/nvim/fold.c

@@ -14,6 +14,7 @@
 #include "nvim/charset.h"
 #include "nvim/cursor.h"
 #include "nvim/diff.h"
+#include "nvim/drawscreen.h"
 #include "nvim/eval.h"
 #include "nvim/ex_docmd.h"
 #include "nvim/ex_session.h"
@@ -31,7 +32,6 @@
 #include "nvim/option.h"
 #include "nvim/os/input.h"
 #include "nvim/plines.h"
-#include "nvim/screen.h"
 #include "nvim/search.h"
 #include "nvim/strings.h"
 #include "nvim/syntax.h"

src/nvim/getchar.c

@@ -15,6 +15,7 @@
 #include "nvim/buffer_defs.h"
 #include "nvim/charset.h"
 #include "nvim/cursor.h"
+#include "nvim/drawscreen.h"
 #include "nvim/edit.h"
 #include "nvim/eval.h"
 #include "nvim/eval/typval.h"
@@ -42,7 +43,6 @@
 #include "nvim/os/input.h"
 #include "nvim/os/os.h"
 #include "nvim/plines.h"
-#include "nvim/screen.h"
 #include "nvim/state.h"
 #include "nvim/strings.h"
 #include "nvim/ui.h"

src/nvim/grid.c

@@ -1,10 +1,19 @@
 // This is an open source non-commercial project. Dear PVS-Studio, please check
 // it. PVS-Studio Static Code Analyzer for C, C++ and C#: http://www.viva64.com
 
+// Most of the routines in this file perform screen (grid) manipulations. The
+// given operation is performed physically on the screen. The corresponding
+// change is also made to the internal screen image. In this way, the editor
+// anticipates the effect of editing changes on the appearance of the screen.
+// That way, when we call update_screen() a complete redraw isn't usually
+// necessary. Another advantage is that we can keep adding code to anticipate
+// screen changes, and in the meantime, everything still works.
+//
+// The grid_*() functions write to the screen and handle updating grid->lines[].
+
 #include "nvim/arabic.h"
 #include "nvim/grid.h"
 #include "nvim/highlight.h"
-#include "nvim/screen.h"
 #include "nvim/ui.h"
 #include "nvim/vim.h"
 
@@ -780,3 +789,123 @@ void grid_assign_handle(ScreenGrid *grid)
     grid->handle = ++last_grid_handle;
   }
 }
+
+/// insert lines on the screen and move the existing lines down
+/// 'line_count' is the number of lines to be inserted.
+/// 'end' is the line after the scrolled part. Normally it is Rows.
+/// 'col' is the column from with we start inserting.
+//
+/// 'row', 'col' and 'end' are relative to the start of the region.
+void grid_ins_lines(ScreenGrid *grid, int row, int line_count, int end, int col, int width)
+{
+  int i;
+  int j;
+  unsigned temp;
+
+  int row_off = 0;
+  grid_adjust(&grid, &row_off, &col);
+  row += row_off;
+  end += row_off;
+
+  if (line_count <= 0) {
+    return;
+  }
+
+  // Shift line_offset[] line_count down to reflect the inserted lines.
+  // Clear the inserted lines.
+  for (i = 0; i < line_count; i++) {
+    if (width != grid->cols) {
+      // need to copy part of a line
+      j = end - 1 - i;
+      while ((j -= line_count) >= row) {
+        linecopy(grid, j + line_count, j, col, width);
+      }
+      j += line_count;
+      grid_clear_line(grid, grid->line_offset[j] + (size_t)col, width, false);
+      grid->line_wraps[j] = false;
+    } else {
+      j = end - 1 - i;
+      temp = (unsigned)grid->line_offset[j];
+      while ((j -= line_count) >= row) {
+        grid->line_offset[j + line_count] = grid->line_offset[j];
+        grid->line_wraps[j + line_count] = grid->line_wraps[j];
+      }
+      grid->line_offset[j + line_count] = temp;
+      grid->line_wraps[j + line_count] = false;
+      grid_clear_line(grid, temp, grid->cols, false);
+    }
+  }
+
+  if (!grid->throttled) {
+    ui_call_grid_scroll(grid->handle, row, end, col, col + width, -line_count, 0);
+  }
+}
+
+/// delete lines on the screen and move lines up.
+/// 'end' is the line after the scrolled part. Normally it is Rows.
+/// When scrolling region used 'off' is the offset from the top for the region.
+/// 'row' and 'end' are relative to the start of the region.
+void grid_del_lines(ScreenGrid *grid, int row, int line_count, int end, int col, int width)
+{
+  int j;
+  int i;
+  unsigned temp;
+
+  int row_off = 0;
+  grid_adjust(&grid, &row_off, &col);
+  row += row_off;
+  end += row_off;
+
+  if (line_count <= 0) {
+    return;
+  }
+
+  // Now shift line_offset[] line_count up to reflect the deleted lines.
+  // Clear the inserted lines.
+  for (i = 0; i < line_count; i++) {
+    if (width != grid->cols) {
+      // need to copy part of a line
+      j = row + i;
+      while ((j += line_count) <= end - 1) {
+        linecopy(grid, j - line_count, j, col, width);
+      }
+      j -= line_count;
+      grid_clear_line(grid, grid->line_offset[j] + (size_t)col, width, false);
+      grid->line_wraps[j] = false;
+    } else {
+      // whole width, moving the line pointers is faster
+      j = row + i;
+      temp = (unsigned)grid->line_offset[j];
+      while ((j += line_count) <= end - 1) {
+        grid->line_offset[j - line_count] = grid->line_offset[j];
+        grid->line_wraps[j - line_count] = grid->line_wraps[j];
+      }
+      grid->line_offset[j - line_count] = temp;
+      grid->line_wraps[j - line_count] = false;
+      grid_clear_line(grid, temp, grid->cols, false);
+    }
+  }
+
+  if (!grid->throttled) {
+    ui_call_grid_scroll(grid->handle, row, end, col, col + width, line_count, 0);
+  }
+}
+
+static void linecopy(ScreenGrid *grid, int to, int from, int col, int width)
+{
+  unsigned off_to = (unsigned)(grid->line_offset[to] + (size_t)col);
+  unsigned off_from = (unsigned)(grid->line_offset[from] + (size_t)col);
+
+  memmove(grid->chars + off_to, grid->chars + off_from, (size_t)width * sizeof(schar_T));
+  memmove(grid->attrs + off_to, grid->attrs + off_from, (size_t)width * sizeof(sattr_T));
+}
+
+win_T *get_win_by_grid_handle(handle_T handle)
+{
+  FOR_ALL_WINDOWS_IN_TAB(wp, curtab) {
+    if (wp->w_grid_alloc.handle == handle) {
+      return wp;
+    }
+  }
+  return NULL;
+}

src/nvim/grid.h

@@ -19,6 +19,9 @@ EXTERN ScreenGrid default_grid INIT(= SCREEN_GRID_INIT);
 
 #define DEFAULT_GRID_HANDLE 1  // handle for the default_grid
 
+/// While resizing the screen this flag is set.
+EXTERN bool resizing_screen INIT(= 0);
+
 EXTERN schar_T *linebuf_char INIT(= NULL);
 EXTERN sattr_T *linebuf_attr INIT(= NULL);
 

src/nvim/highlight.c

@@ -6,6 +6,7 @@
 #include "nvim/api/private/defs.h"
 #include "nvim/api/private/helpers.h"
 #include "nvim/decoration_provider.h"
+#include "nvim/drawscreen.h"
 #include "nvim/highlight.h"
 #include "nvim/highlight_defs.h"
 #include "nvim/highlight_group.h"
@@ -14,7 +15,6 @@
 #include "nvim/message.h"
 #include "nvim/option.h"
 #include "nvim/popupmenu.h"
-#include "nvim/screen.h"
 #include "nvim/ui.h"
 #include "nvim/vim.h"
 

src/nvim/highlight_group.c

@@ -9,6 +9,7 @@
 #include "nvim/autocmd.h"
 #include "nvim/charset.h"
 #include "nvim/cursor_shape.h"
+#include "nvim/drawscreen.h"
 #include "nvim/eval.h"
 #include "nvim/eval/vars.h"
 #include "nvim/ex_docmd.h"
@@ -19,7 +20,6 @@
 #include "nvim/match.h"
 #include "nvim/option.h"
 #include "nvim/runtime.h"
-#include "nvim/screen.h"
 
 /// \addtogroup SG_SET
 /// @{

src/nvim/insexpand.c

@@ -13,6 +13,7 @@
 #include "nvim/change.h"
 #include "nvim/charset.h"
 #include "nvim/cursor.h"
+#include "nvim/drawscreen.h"
 #include "nvim/edit.h"
 #include "nvim/eval.h"
 #include "nvim/eval/typval.h"
@@ -36,7 +37,6 @@
 #include "nvim/path.h"
 #include "nvim/popupmenu.h"
 #include "nvim/regexp.h"
-#include "nvim/screen.h"
 #include "nvim/search.h"
 #include "nvim/spell.h"
 #include "nvim/state.h"

src/nvim/lua/executor.c

@@ -15,6 +15,7 @@
 #include "nvim/buffer_defs.h"
 #include "nvim/change.h"
 #include "nvim/cursor.h"
+#include "nvim/drawscreen.h"
 #include "nvim/eval.h"
 #include "nvim/eval/funcs.h"
 #include "nvim/eval/typval.h"
@@ -38,7 +39,6 @@
 #include "nvim/os/os.h"
 #include "nvim/profile.h"
 #include "nvim/runtime.h"
-#include "nvim/screen.h"
 #include "nvim/undo.h"
 #include "nvim/usercmd.h"
 #include "nvim/version.h"

src/nvim/main.c

@@ -17,6 +17,7 @@
 #include "nvim/decoration.h"
 #include "nvim/decoration_provider.h"
 #include "nvim/diff.h"
+#include "nvim/drawscreen.h"
 #include "nvim/eval.h"
 #include "nvim/ex_cmds.h"
 #include "nvim/ex_cmds2.h"
@@ -62,7 +63,6 @@
 #include "nvim/profile.h"
 #include "nvim/quickfix.h"
 #include "nvim/runtime.h"
-#include "nvim/screen.h"
 #include "nvim/shada.h"
 #include "nvim/sign.h"
 #include "nvim/state.h"

src/nvim/match.c

@@ -7,6 +7,7 @@
 
 #include "nvim/buffer_defs.h"
 #include "nvim/charset.h"
+#include "nvim/drawscreen.h"
 #include "nvim/eval.h"
 #include "nvim/eval/funcs.h"
 #include "nvim/ex_docmd.h"
@@ -18,7 +19,6 @@
 #include "nvim/profile.h"
 #include "nvim/regexp.h"
 #include "nvim/runtime.h"
-#include "nvim/screen.h"
 #include "nvim/vim.h"
 
 #ifdef INCLUDE_GENERATED_DECLARATIONS

src/nvim/mbyte.c

@@ -39,6 +39,7 @@
 #include "nvim/arabic.h"
 #include "nvim/charset.h"
 #include "nvim/cursor.h"
+#include "nvim/drawscreen.h"
 #include "nvim/eval.h"
 #include "nvim/fileio.h"
 #include "nvim/func_attr.h"
@@ -52,7 +53,6 @@
 #include "nvim/option.h"
 #include "nvim/os/os.h"
 #include "nvim/path.h"
-#include "nvim/screen.h"
 #include "nvim/spell.h"
 #include "nvim/strings.h"
 

src/nvim/memline.c

@@ -48,6 +48,7 @@
 #include "nvim/buffer.h"
 #include "nvim/change.h"
 #include "nvim/cursor.h"
+#include "nvim/drawscreen.h"
 #include "nvim/eval.h"
 #include "nvim/fileio.h"
 #include "nvim/func_attr.h"
@@ -66,7 +67,6 @@
 #include "nvim/os/process.h"
 #include "nvim/os_unix.h"
 #include "nvim/path.h"
-#include "nvim/screen.h"
 #include "nvim/sha256.h"
 #include "nvim/spell.h"
 #include "nvim/strings.h"

src/nvim/message.c

@@ -15,6 +15,7 @@
 #include "nvim/ascii.h"
 #include "nvim/assert.h"
 #include "nvim/charset.h"
+#include "nvim/drawscreen.h"
 #include "nvim/eval.h"
 #include "nvim/ex_docmd.h"
 #include "nvim/ex_eval.h"
@@ -40,7 +41,6 @@
 #include "nvim/os/time.h"
 #include "nvim/regexp.h"
 #include "nvim/runtime.h"
-#include "nvim/screen.h"
 #include "nvim/strings.h"
 #include "nvim/syntax.h"
 #include "nvim/ui.h"

src/nvim/mouse.c

@@ -8,6 +8,7 @@
 #include "nvim/charset.h"
 #include "nvim/cursor.h"
 #include "nvim/diff.h"
+#include "nvim/drawscreen.h"
 #include "nvim/fold.h"
 #include "nvim/grid.h"
 #include "nvim/memline.h"
@@ -15,7 +16,6 @@
 #include "nvim/move.h"
 #include "nvim/os_unix.h"
 #include "nvim/plines.h"
-#include "nvim/screen.h"
 #include "nvim/state.h"
 #include "nvim/strings.h"
 #include "nvim/syntax.h"

src/nvim/move.c

@@ -21,6 +21,7 @@
 #include "nvim/charset.h"
 #include "nvim/cursor.h"
 #include "nvim/diff.h"
+#include "nvim/drawscreen.h"
 #include "nvim/edit.h"
 #include "nvim/fold.h"
 #include "nvim/getchar.h"
@@ -32,7 +33,6 @@
 #include "nvim/option.h"
 #include "nvim/plines.h"
 #include "nvim/popupmenu.h"
-#include "nvim/screen.h"
 #include "nvim/search.h"
 #include "nvim/strings.h"
 #include "nvim/window.h"

src/nvim/normal.c

@@ -22,6 +22,7 @@
 #include "nvim/cursor.h"
 #include "nvim/diff.h"
 #include "nvim/digraph.h"
+#include "nvim/drawscreen.h"
 #include "nvim/edit.h"
 #include "nvim/eval.h"
 #include "nvim/eval/userfunc.h"
@@ -56,7 +57,6 @@
 #include "nvim/plines.h"
 #include "nvim/profile.h"
 #include "nvim/quickfix.h"
-#include "nvim/screen.h"
 #include "nvim/search.h"
 #include "nvim/spell.h"
 #include "nvim/spellfile.h"

src/nvim/ops.c

@@ -17,6 +17,7 @@
 #include "nvim/change.h"
 #include "nvim/charset.h"
 #include "nvim/cursor.h"
+#include "nvim/drawscreen.h"
 #include "nvim/edit.h"
 #include "nvim/eval.h"
 #include "nvim/eval/typval.h"
@@ -46,7 +47,6 @@
 #include "nvim/os/time.h"
 #include "nvim/path.h"
 #include "nvim/plines.h"
-#include "nvim/screen.h"
 #include "nvim/search.h"
 #include "nvim/state.h"
 #include "nvim/strings.h"

src/nvim/option.c

@@ -36,6 +36,7 @@
 #include "nvim/decoration_provider.h"
 #include "nvim/diff.h"
 #include "nvim/digraph.h"
+#include "nvim/drawscreen.h"
 #include "nvim/edit.h"
 #include "nvim/eval.h"
 #include "nvim/eval/typval.h"
@@ -71,7 +72,6 @@
 #include "nvim/popupmenu.h"
 #include "nvim/regexp.h"
 #include "nvim/runtime.h"
-#include "nvim/screen.h"
 #include "nvim/spell.h"
 #include "nvim/spellfile.h"
 #include "nvim/spellsuggest.h"

src/nvim/popupmenu.c

@@ -13,6 +13,7 @@
 #include "nvim/ascii.h"
 #include "nvim/buffer.h"
 #include "nvim/charset.h"
+#include "nvim/drawscreen.h"
 #include "nvim/edit.h"
 #include "nvim/eval/typval.h"
 #include "nvim/ex_cmds.h"
@@ -25,7 +26,6 @@
 #include "nvim/move.h"
 #include "nvim/option.h"
 #include "nvim/popupmenu.h"
-#include "nvim/screen.h"
 #include "nvim/search.h"
 #include "nvim/strings.h"
 #include "nvim/ui.h"

src/nvim/quickfix.c

@@ -14,6 +14,7 @@
 #include "nvim/buffer.h"
 #include "nvim/charset.h"
 #include "nvim/cursor.h"
+#include "nvim/drawscreen.h"
 #include "nvim/edit.h"
 #include "nvim/eval.h"
 #include "nvim/ex_cmds.h"
@@ -39,7 +40,6 @@
 #include "nvim/path.h"
 #include "nvim/quickfix.h"
 #include "nvim/regexp.h"
-#include "nvim/screen.h"
 #include "nvim/search.h"
 #include "nvim/strings.h"
 #include "nvim/ui.h"

src/nvim/screen.h

@@ -4,31 +4,10 @@
 #include <stdbool.h>
 
 #include "nvim/buffer_defs.h"
+#include "nvim/fold.h"
 #include "nvim/grid_defs.h"
-#include "nvim/pos.h"
-#include "nvim/types.h"
 
-// flags for update_screen()
-// The higher the value, the higher the priority
-#define VALID                   10  // buffer not changed, or changes marked
-                                    // with b_mod_*
-#define INVERTED                20  // redisplay inverted part that changed
-#define INVERTED_ALL            25  // redisplay whole inverted part
-#define REDRAW_TOP              30  // display first w_upd_rows screen lines
-#define SOME_VALID              35  // like NOT_VALID but may scroll
-#define NOT_VALID               40  // buffer needs complete redraw
-#define CLEAR                   50  // screen messed up, clear it
-
-/// corner value flags for hsep_connected and vsep_connected
-typedef enum {
-  WC_TOP_LEFT = 0,
-  WC_TOP_RIGHT,
-  WC_BOTTOM_LEFT,
-  WC_BOTTOM_RIGHT,
-} WindowCorner;
-
-// Maximum columns for terminal highlight attributes
-#define TERM_ATTRS_MAX 1024
+EXTERN match_T screen_search_hl;       // used for 'hlsearch' highlight matching
 
 /// Array defining what should be done when tabline is clicked
 EXTERN StlClickDefinition *tab_page_click_defs INIT(= NULL);
@@ -39,13 +18,6 @@ EXTERN long tab_page_click_defs_size INIT(= 0);
 #define W_ENDCOL(wp)   ((wp)->w_wincol + (wp)->w_width)
 #define W_ENDROW(wp)   ((wp)->w_winrow + (wp)->w_height)
 
-// While redrawing the screen this flag is set.  It means the screen size
-// ('lines' and 'rows') must not be changed.
-EXTERN bool updating_screen INIT(= 0);
-
-// While resizing the screen this flag is set.
-EXTERN bool resizing_screen INIT(= 0);
-
 #ifdef INCLUDE_GENERATED_DECLARATIONS
 # include "screen.h.generated.h"
 #endif

src/nvim/search.c

@@ -17,6 +17,7 @@
 #include "nvim/charset.h"
 #include "nvim/cmdhist.h"
 #include "nvim/cursor.h"
+#include "nvim/drawscreen.h"
 #include "nvim/edit.h"
 #include "nvim/eval.h"
 #include "nvim/eval/funcs.h"
@@ -45,7 +46,6 @@
 #include "nvim/path.h"
 #include "nvim/profile.h"
 #include "nvim/regexp.h"
-#include "nvim/screen.h"
 #include "nvim/search.h"
 #include "nvim/strings.h"
 #include "nvim/ui.h"

src/nvim/sign.c

@@ -9,6 +9,7 @@
 #include "nvim/buffer.h"
 #include "nvim/charset.h"
 #include "nvim/cursor.h"
+#include "nvim/drawscreen.h"
 #include "nvim/edit.h"
 #include "nvim/eval/funcs.h"
 #include "nvim/ex_docmd.h"
@@ -16,7 +17,6 @@
 #include "nvim/highlight_group.h"
 #include "nvim/move.h"
 #include "nvim/option.h"
-#include "nvim/screen.h"
 #include "nvim/sign.h"
 #include "nvim/syntax.h"
 #include "nvim/vim.h"

src/nvim/spell.c

@@ -72,6 +72,7 @@
 #include "nvim/change.h"
 #include "nvim/charset.h"
 #include "nvim/cursor.h"
+#include "nvim/drawscreen.h"
 #include "nvim/edit.h"
 #include "nvim/ex_cmds.h"
 #include "nvim/ex_docmd.h"
@@ -92,7 +93,6 @@
 #include "nvim/os_unix.h"
 #include "nvim/path.h"
 #include "nvim/regexp.h"
-#include "nvim/screen.h"
 #include "nvim/search.h"
 #include "nvim/spell.h"
 #include "nvim/spellfile.h"

src/nvim/spellfile.c

@@ -234,6 +234,7 @@
 #include "nvim/ascii.h"
 #include "nvim/buffer.h"
 #include "nvim/charset.h"
+#include "nvim/drawscreen.h"
 #include "nvim/ex_cmds2.h"
 #include "nvim/fileio.h"
 #include "nvim/memline.h"
@@ -244,7 +245,6 @@
 #include "nvim/path.h"
 #include "nvim/regexp.h"
 #include "nvim/runtime.h"
-#include "nvim/screen.h"
 #include "nvim/spell.h"
 #include "nvim/spell_defs.h"
 #include "nvim/spellfile.h"

src/nvim/state.c

@@ -5,6 +5,7 @@
 
 #include "nvim/ascii.h"
 #include "nvim/autocmd.h"
+#include "nvim/drawscreen.h"
 #include "nvim/eval.h"
 #include "nvim/ex_docmd.h"
 #include "nvim/getchar.h"
@@ -15,7 +16,6 @@
 #include "nvim/option.h"
 #include "nvim/option_defs.h"
 #include "nvim/os/input.h"
-#include "nvim/screen.h"
 #include "nvim/state.h"
 #include "nvim/ui.h"
 #include "nvim/vim.h"

src/nvim/syntax.c

@@ -18,6 +18,7 @@
 #include "nvim/buffer.h"
 #include "nvim/charset.h"
 #include "nvim/cursor_shape.h"
+#include "nvim/drawscreen.h"
 #include "nvim/eval.h"
 #include "nvim/eval/vars.h"
 #include "nvim/ex_docmd.h"
@@ -43,7 +44,6 @@
 #include "nvim/path.h"
 #include "nvim/profile.h"
 #include "nvim/regexp.h"
-#include "nvim/screen.h"
 #include "nvim/sign.h"
 #include "nvim/strings.h"
 #include "nvim/syntax.h"

src/nvim/tag.c

@@ -14,6 +14,7 @@
 #include "nvim/buffer.h"
 #include "nvim/charset.h"
 #include "nvim/cursor.h"
+#include "nvim/drawscreen.h"
 #include "nvim/edit.h"
 #include "nvim/eval.h"
 #include "nvim/ex_cmds.h"
@@ -41,7 +42,6 @@
 #include "nvim/quickfix.h"
 #include "nvim/regexp.h"
 #include "nvim/runtime.h"
-#include "nvim/screen.h"
 #include "nvim/search.h"
 #include "nvim/strings.h"
 #include "nvim/tag.h"

src/nvim/terminal.c

@@ -48,6 +48,7 @@
 #include "nvim/buffer.h"
 #include "nvim/change.h"
 #include "nvim/cursor.h"
+#include "nvim/drawscreen.h"
 #include "nvim/eval.h"
 #include "nvim/event/loop.h"
 #include "nvim/event/time.h"
@@ -69,7 +70,6 @@
 #include "nvim/move.h"
 #include "nvim/option.h"
 #include "nvim/os/input.h"
-#include "nvim/screen.h"
 #include "nvim/state.h"
 #include "nvim/terminal.h"
 #include "nvim/ui.h"

src/nvim/ui.c

@@ -13,6 +13,7 @@
 #include "nvim/cursor.h"
 #include "nvim/cursor_shape.h"
 #include "nvim/diff.h"
+#include "nvim/drawscreen.h"
 #include "nvim/event/loop.h"
 #include "nvim/ex_getln.h"
 #include "nvim/fold.h"
@@ -32,7 +33,6 @@
 #include "nvim/os/time.h"
 #include "nvim/os_unix.h"
 #include "nvim/popupmenu.h"
-#include "nvim/screen.h"
 #include "nvim/ui.h"
 #include "nvim/ui_compositor.h"
 #include "nvim/vim.h"

src/nvim/undo.c

@@ -86,6 +86,7 @@
 #include "nvim/buffer_updates.h"
 #include "nvim/change.h"
 #include "nvim/cursor.h"
+#include "nvim/drawscreen.h"
 #include "nvim/edit.h"
 #include "nvim/ex_getln.h"
 #include "nvim/extmark.h"
@@ -105,7 +106,6 @@
 #include "nvim/os_unix.h"
 #include "nvim/path.h"
 #include "nvim/pos.h"  // MAXLNUM
-#include "nvim/screen.h"
 #include "nvim/sha256.h"
 #include "nvim/state.h"
 #include "nvim/strings.h"

src/nvim/version.c

@@ -14,13 +14,13 @@
 #include "nvim/ascii.h"
 #include "nvim/buffer.h"
 #include "nvim/charset.h"
+#include "nvim/drawscreen.h"
 #include "nvim/grid.h"
 #include "nvim/iconv.h"
 #include "nvim/lua/executor.h"
 #include "nvim/memline.h"
 #include "nvim/memory.h"
 #include "nvim/message.h"
-#include "nvim/screen.h"
 #include "nvim/strings.h"
 #include "nvim/version.h"
 #include "nvim/vim.h"

src/nvim/window.c

@@ -13,6 +13,7 @@
 #include "nvim/charset.h"
 #include "nvim/cursor.h"
 #include "nvim/diff.h"
+#include "nvim/drawscreen.h"
 #include "nvim/edit.h"
 #include "nvim/eval.h"
 #include "nvim/eval/vars.h"
@@ -47,7 +48,6 @@
 #include "nvim/plines.h"
 #include "nvim/quickfix.h"
 #include "nvim/regexp.h"
-#include "nvim/screen.h"
 #include "nvim/search.h"
 #include "nvim/state.h"
 #include "nvim/strings.h"