diff options
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/reline/windows.rb | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/lib/reline/windows.rb b/lib/reline/windows.rb index b09290bcf3..937941b960 100644 --- a/lib/reline/windows.rb +++ b/lib/reline/windows.rb @@ -233,7 +233,9 @@ class Reline::Windows def self.move_cursor_up(val) if val > 0 - @@SetConsoleCursorPosition.call(@@hConsoleHandle, (cursor_pos.y - val) * 65536 + cursor_pos.x) + y = cursor_pos.y - val + y = 0 if y < 0 + @@SetConsoleCursorPosition.call(@@hConsoleHandle, y * 65536 + cursor_pos.x) elsif val < 0 move_cursor_down(-val) end @@ -241,6 +243,9 @@ class Reline::Windows def self.move_cursor_down(val) if val > 0 + screen_height = get_screen_size.first + y = cursor_pos.y + val + y = screen_height - 1 if y > (screen_height - 1) @@SetConsoleCursorPosition.call(@@hConsoleHandle, (cursor_pos.y + val) * 65536 + cursor_pos.x) elsif val < 0 move_cursor_up(-val) @@ -257,6 +262,8 @@ class Reline::Windows def self.scroll_down(val) return if val.zero? + screen_height = get_screen_size.first + val = screen_height - 1 if val > (screen_height - 1) scroll_rectangle = [0, val, get_screen_size.last, get_screen_size.first].pack('s4') destination_origin = 0 # y * 65536 + x fill = [' '.ord, 0].pack('SS') |