Add support for single line terminals

This changes the minimum terminal dimensions from 2 lines and 2 columns,
to 1 line and 2 columns.

This also reworks the `SizeInfo` to store the number of columns and
lines and consistently has only the terminal lines/columns stored,
instead of including the message bar and search in some places of the
Alacritty renderer/input.

These new changes also make it easy to properly start the selection
scrolling as soon as the mouse is over the message bar, instead of
waiting until it is beyond it.

Fixes #4207.

Co-authored-by: Christian Duerr <contact@christianduerr.com>

alacritty_terminal/tests/ref/alt_reset/size.json

@@ -1 +1 @@
-{"width":1916.0,"height":1054.0,"cell_width":18.0,"cell_height":35.0,"padding_x":0.0,"padding_y":0.0,"dpr":2.0}
+{"width":1916.0,"height":1054.0,"cell_width":18.0,"cell_height":35.0,"padding_x":0.0,"padding_y":0.0,"cols":106,"screen_lines":30}

alacritty_terminal/tests/ref/clear_underline/size.json

@@ -1 +1 @@
-{"width":662.0,"height":708.0,"cell_width":10.0,"cell_height":22.0,"padding_x":0.0,"padding_y":0.0,"dpr":1.0833333333333333}
+{"width":662.0,"height":708.0,"cell_width":10.0,"cell_height":22.0,"padding_x":0.0,"padding_y":0.0,"cols":66,"screen_lines":32}

alacritty_terminal/tests/ref/colored_reset/size.json

@@ -1 +1 @@
-{"width":939.0,"height":1020.0,"cell_width":8.0,"cell_height":16.0,"padding_x":5.0,"padding_y":6.0,"dpr":1.0}
+{"width":939.0,"height":1020.0,"cell_width":8.0,"cell_height":16.0,"padding_x":5.0,"padding_y":6.0,"cols":116,"screen_lines":63}

alacritty_terminal/tests/ref/csi_rep/size.json

@@ -1 +1 @@
-{"width":1900.0,"height":1038.0,"cell_width":18.0,"cell_height":35.0,"padding_x":0.0,"padding_y":0.0,"dpr":2.0}
+{"width":1900.0,"height":1038.0,"cell_width":18.0,"cell_height":35.0,"padding_x":0.0,"padding_y":0.0,"cols":105,"screen_lines":29}

alacritty_terminal/tests/ref/decaln_reset/size.json

@@ -1 +1 @@
-{"width":1916.0,"height":1054.0,"cell_width":18.0,"cell_height":35.0,"padding_x":0.0,"padding_y":0.0,"dpr":2.0}
+{"width":1916.0,"height":1054.0,"cell_width":18.0,"cell_height":35.0,"padding_x":0.0,"padding_y":0.0,"cols":106,"screen_lines":30}

alacritty_terminal/tests/ref/deccolm_reset/size.json

@@ -1 +1 @@
-{"width":1916.0,"height":1054.0,"cell_width":18.0,"cell_height":35.0,"padding_x":0.0,"padding_y":0.0,"dpr":2.0}
+{"width":1916.0,"height":1054.0,"cell_width":18.0,"cell_height":35.0,"padding_x":0.0,"padding_y":0.0,"cols":106,"screen_lines":30}

alacritty_terminal/tests/ref/delete_chars_reset/size.json

@@ -1 +1 @@
-{"width":1916.0,"height":1054.0,"cell_width":18.0,"cell_height":35.0,"padding_x":0.0,"padding_y":0.0,"dpr":2.0}
+{"width":1916.0,"height":1054.0,"cell_width":18.0,"cell_height":35.0,"padding_x":0.0,"padding_y":0.0,"cols":106,"screen_lines":30}

alacritty_terminal/tests/ref/delete_lines/size.json

@@ -1 +1 @@
-{"width":939.0,"height":503.0,"cell_width":8.0,"cell_height":16.0,"padding_x":5.0,"padding_y":3.0,"dpr":1.0}
+{"width":939.0,"height":503.0,"cell_width":8.0,"cell_height":16.0,"padding_x":5.0,"padding_y":3.0,"cols":116,"screen_lines":31}

alacritty_terminal/tests/ref/erase_chars_reset/size.json

@@ -1 +1 @@
-{"width":1916.0,"height":1054.0,"cell_width":18.0,"cell_height":35.0,"padding_x":0.0,"padding_y":0.0,"dpr":2.0}
+{"width":1916.0,"height":1054.0,"cell_width":18.0,"cell_height":35.0,"padding_x":0.0,"padding_y":0.0,"cols":106,"screen_lines":30}

alacritty_terminal/tests/ref/fish_cc/size.json

@@ -1 +1 @@
-{"width":1900.0,"height":1038.0,"cell_width":18.0,"cell_height":35.0,"padding_x":0.0,"padding_y":0.0,"dpr":2.0}
+{"width":1900.0,"height":1038.0,"cell_width":18.0,"cell_height":35.0,"padding_x":0.0,"padding_y":0.0,"cols":105,"screen_lines":29}

alacritty_terminal/tests/ref/grid_reset/size.json

@@ -1 +1 @@
-{"width":1900.0,"height":1038.0,"cell_width":18.0,"cell_height":35.0,"padding_x":0.0,"padding_y":0.0,"dpr":2.0}
+{"width":1900.0,"height":1038.0,"cell_width":18.0,"cell_height":35.0,"padding_x":0.0,"padding_y":0.0,"cols":105,"screen_lines":29}

alacritty_terminal/tests/ref/history/size.json

@@ -1 +1 @@
-{"width":1900.0,"height":1038.0,"cell_width":18.0,"cell_height":35.0,"padding_x":0.0,"padding_y":0.0,"dpr":2.0}
+{"width":1900.0,"height":1038.0,"cell_width":18.0,"cell_height":35.0,"padding_x":0.0,"padding_y":0.0,"cols":105,"screen_lines":29}

alacritty_terminal/tests/ref/indexed_256_colors/size.json

@@ -1 +1 @@
-{"width":1900.0,"height":1038.0,"cell_width":18.0,"cell_height":35.0,"padding_x":0.0,"padding_y":0.0,"dpr":2.0}
+{"width":1900.0,"height":1038.0,"cell_width":18.0,"cell_height":35.0,"padding_x":0.0,"padding_y":0.0,"cols":105,"screen_lines":29}

alacritty_terminal/tests/ref/insert_blank_reset/size.json

@@ -1 +1 @@
-{"width":1916.0,"height":1054.0,"cell_width":18.0,"cell_height":35.0,"padding_x":0.0,"padding_y":0.0,"dpr":2.0}
+{"width":1916.0,"height":1054.0,"cell_width":18.0,"cell_height":35.0,"padding_x":0.0,"padding_y":0.0,"cols":106,"screen_lines":30}

alacritty_terminal/tests/ref/issue_855/size.json

@@ -1 +1 @@
-{"width":1900.0,"height":1038.0,"cell_width":18.0,"cell_height":35.0,"padding_x":0.0,"padding_y":0.0,"dpr":2.0}
+{"width":1900.0,"height":1038.0,"cell_width":18.0,"cell_height":35.0,"padding_x":0.0,"padding_y":0.0,"cols":105,"screen_lines":29}

alacritty_terminal/tests/ref/ll/size.json

@@ -1 +1 @@
-{"width":1900.0,"height":1038.0,"cell_width":18.0,"cell_height":35.0,"padding_x":0.0,"padding_y":0.0,"dpr":2.0}
+{"width":1900.0,"height":1038.0,"cell_width":18.0,"cell_height":35.0,"padding_x":0.0,"padding_y":0.0,"cols":105,"screen_lines":29}

alacritty_terminal/tests/ref/newline_with_cursor_beyond_scroll_region/size.json

@@ -1 +1 @@
-{"width":1900.0,"height":1038.0,"cell_width":18.0,"cell_height":35.0,"padding_x":0.0,"padding_y":0.0,"dpr":2.0}
+{"width":1900.0,"height":1038.0,"cell_width":18.0,"cell_height":35.0,"padding_x":0.0,"padding_y":0.0,"cols":105,"screen_lines":29}

alacritty_terminal/tests/ref/region_scroll_down/size.json

@@ -1 +1 @@
-{"width":939.0,"height":503.0,"cell_width":8.0,"cell_height":16.0,"padding_x":5.0,"padding_y":3.0,"dpr":1.0}
+{"width":939.0,"height":503.0,"cell_width":8.0,"cell_height":16.0,"padding_x":5.0,"padding_y":3.0,"cols":116,"screen_lines":31}

alacritty_terminal/tests/ref/row_reset/size.json

@@ -1 +1 @@
-{"width":1900.0,"height":1040.0,"cell_width":11.0,"cell_height":22.0,"padding_x":0.0,"padding_y":0.0,"dpr":2.0}
+{"width":1900.0,"height":1040.0,"cell_width":11.0,"cell_height":22.0,"padding_x":0.0,"padding_y":0.0,"cols":172,"screen_lines":47}

alacritty_terminal/tests/ref/saved_cursor/size.json

@@ -1 +1 @@
-{"width":1259.0,"height":683.0,"cell_width":9.0,"cell_height":19.0,"padding_x":4.0,"padding_y":9.0,"dpr":1.1666666666666667}
+{"width":1259.0,"height":683.0,"cell_width":9.0,"cell_height":19.0,"padding_x":4.0,"padding_y":9.0,"cols":139,"screen_lines":35}

alacritty_terminal/tests/ref/saved_cursor_alt/size.json

@@ -1 +1 @@
-{"width":1259.0,"height":683.0,"cell_width":9.0,"cell_height":19.0,"padding_x":4.0,"padding_y":9.0,"dpr":1.1666666666666667}
+{"width":1259.0,"height":683.0,"cell_width":9.0,"cell_height":19.0,"padding_x":4.0,"padding_y":9.0,"cols":139,"screen_lines":35}

alacritty_terminal/tests/ref/scroll_up_reset/size.json

@@ -1 +1 @@
-{"width":1840.0,"height":1040.0,"cell_width":18.0,"cell_height":35.0,"padding_x":0.0,"padding_y":0.0,"dpr":2.0}
+{"width":1840.0,"height":1040.0,"cell_width":18.0,"cell_height":35.0,"padding_x":0.0,"padding_y":0.0,"cols":102,"screen_lines":29}

alacritty_terminal/tests/ref/selective_erasure/size.json

@@ -1 +1 @@
-{"width":70.0,"height":63.0,"cell_width":7.0,"cell_height":21.0,"padding_x":0.0,"padding_y":0.0,"dpr":1.0}
+{"width":70.0,"height":63.0,"cell_width":7.0,"cell_height":21.0,"padding_x":0.0,"padding_y":0.0,"cols":10,"screen_lines":3}

alacritty_terminal/tests/ref/sgr/size.json

@@ -1 +1 @@
-{"width":1259.0,"height":683.0,"cell_width":9.0,"cell_height":19.0,"padding_x":4.0,"padding_y":9.0,"dpr":1.1666666666666667}
+{"width":1259.0,"height":683.0,"cell_width":9.0,"cell_height":19.0,"padding_x":4.0,"padding_y":9.0,"cols":139,"screen_lines":35}

alacritty_terminal/tests/ref/tab_rendering/size.json

@@ -1 +1 @@
-{"width":939.0,"height":1020.0,"cell_width":8.0,"cell_height":16.0,"padding_x":5.0,"padding_y":6.0,"dpr":1.0}
+{"width":939.0,"height":1020.0,"cell_width":8.0,"cell_height":16.0,"padding_x":5.0,"padding_y":6.0,"cols":116,"screen_lines":63}

alacritty_terminal/tests/ref/tmux_git_log/size.json

@@ -1 +1 @@
-{"width":1900.0,"height":1038.0,"cell_width":18.0,"cell_height":35.0,"padding_x":0.0,"padding_y":0.0,"dpr":2.0}
+{"width":1900.0,"height":1038.0,"cell_width":18.0,"cell_height":35.0,"padding_x":0.0,"padding_y":0.0,"cols":105,"screen_lines":29}

alacritty_terminal/tests/ref/tmux_htop/size.json

@@ -1 +1 @@
-{"width":1900.0,"height":1038.0,"cell_width":18.0,"cell_height":35.0,"padding_x":0.0,"padding_y":0.0,"dpr":2.0}
+{"width":1900.0,"height":1038.0,"cell_width":18.0,"cell_height":35.0,"padding_x":0.0,"padding_y":0.0,"cols":105,"screen_lines":29}

alacritty_terminal/tests/ref/underline/size.json

@@ -1 +1 @@
-{"width":939.0,"height":503.0,"cell_width":8.0,"cell_height":16.0,"padding_x":5.0,"padding_y":3.0,"dpr":1.0}
+{"width":939.0,"height":503.0,"cell_width":8.0,"cell_height":16.0,"padding_x":5.0,"padding_y":3.0,"cols":116,"screen_lines":31}

alacritty_terminal/tests/ref/vim_24bitcolors_bce/size.json

@@ -1 +1 @@
-{"width":1916.0,"height":2121.0,"cell_width":11.0,"cell_height":22.0,"padding_x":0.0,"padding_y":0.0,"dpr":2.0}
+{"width":1916.0,"height":2121.0,"cell_width":11.0,"cell_height":22.0,"padding_x":0.0,"padding_y":0.0,"cols":174,"screen_lines":96}

alacritty_terminal/tests/ref/vim_large_window_scroll/size.json

@@ -1 +1 @@
-{"width":1900.0,"height":1040.0,"cell_width":11.0,"cell_height":22.0,"padding_x":0.0,"padding_y":0.0,"dpr":2.0}
+{"width":1900.0,"height":1040.0,"cell_width":11.0,"cell_height":22.0,"padding_x":0.0,"padding_y":0.0,"cols":172,"screen_lines":47}

alacritty_terminal/tests/ref/vim_simple_edit/size.json

@@ -1 +1 @@
-{"width":644.0,"height":412.0,"cell_width":8.0,"cell_height":17.0,"padding_x":0.0,"padding_y":0.0}
+{"width":644.0,"height":412.0,"cell_width":8.0,"cell_height":17.0,"padding_x":0.0,"padding_y":0.0,"cols":80,"screen_lines":24}

alacritty_terminal/tests/ref/vttest_cursor_movement_1/size.json

@@ -1 +1 @@
-{"width":1900.0,"height":1038.0,"cell_width":18.0,"cell_height":35.0,"padding_x":0.0,"padding_y":0.0,"dpr":2.0}
+{"width":1900.0,"height":1038.0,"cell_width":18.0,"cell_height":35.0,"padding_x":0.0,"padding_y":0.0,"cols":105,"screen_lines":29}

alacritty_terminal/tests/ref/vttest_insert/size.json

@@ -1 +1 @@
-{"width":1900.0,"height":1038.0,"cell_width":18.0,"cell_height":35.0,"padding_x":0.0,"padding_y":0.0,"dpr":2.0}
+{"width":1900.0,"height":1038.0,"cell_width":18.0,"cell_height":35.0,"padding_x":0.0,"padding_y":0.0,"cols":105,"screen_lines":29}

alacritty_terminal/tests/ref/vttest_origin_mode_1/size.json

@@ -1 +1 @@
-{"width":1900.0,"height":1038.0,"cell_width":18.0,"cell_height":35.0,"padding_x":0.0,"padding_y":0.0,"dpr":2.0}
+{"width":1900.0,"height":1038.0,"cell_width":18.0,"cell_height":35.0,"padding_x":0.0,"padding_y":0.0,"cols":105,"screen_lines":29}

alacritty_terminal/tests/ref/vttest_origin_mode_2/size.json

@@ -1 +1 @@
-{"width":1900.0,"height":1038.0,"cell_width":18.0,"cell_height":35.0,"padding_x":0.0,"padding_y":0.0,"dpr":2.0}
+{"width":1900.0,"height":1038.0,"cell_width":18.0,"cell_height":35.0,"padding_x":0.0,"padding_y":0.0,"cols":105,"screen_lines":29}

alacritty_terminal/tests/ref/vttest_scroll/size.json

@@ -1 +1 @@
-{"width":1900.0,"height":1038.0,"cell_width":18.0,"cell_height":35.0,"padding_x":0.0,"padding_y":0.0,"dpr":2.0}
+{"width":1900.0,"height":1038.0,"cell_width":18.0,"cell_height":35.0,"padding_x":0.0,"padding_y":0.0,"cols":105,"screen_lines":29}

alacritty_terminal/tests/ref/vttest_tab_clear_set/size.json

@@ -1 +1 @@
-{"width":939.0,"height":503.0,"cell_width":8.0,"cell_height":16.0,"padding_x":5.0,"padding_y":3.0,"dpr":1.0}
+{"width":939.0,"height":503.0,"cell_width":8.0,"cell_height":16.0,"padding_x":5.0,"padding_y":3.0,"cols":116,"screen_lines":31}

alacritty_terminal/tests/ref/wrapline_alt_toggle/size.json

@@ -1 +1 @@
-{"width":1259.0,"height":683.0,"cell_width":9.0,"cell_height":19.0,"padding_x":4.0,"padding_y":9.0,"dpr":1.1666666666666667}
+{"width":1259.0,"height":683.0,"cell_width":9.0,"cell_height":19.0,"padding_x":4.0,"padding_y":9.0,"cols":139,"screen_lines":35}

alacritty_terminal/tests/ref/zerowidth/size.json

@@ -1 +1 @@
-{"width":939.0,"height":503.0,"cell_width":8.0,"cell_height":16.0,"padding_x":5.0,"padding_y":3.0,"dpr":1.0}
+{"width":939.0,"height":503.0,"cell_width":8.0,"cell_height":16.0,"padding_x":5.0,"padding_y":3.0,"cols":116,"screen_lines":31}

alacritty_terminal/tests/ref/zsh_tab_completion/size.json

@@ -1 +1 @@
-{"width":1900.0,"height":1038.0,"cell_width":18.0,"cell_height":35.0,"padding_x":0.0,"padding_y":0.0,"dpr":2.0}
+{"width":1900.0,"height":1038.0,"cell_width":18.0,"cell_height":35.0,"padding_x":0.0,"padding_y":0.0,"cols":105,"screen_lines":29}