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Handle cursor and clear command when loading ANSI files

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This commit is contained in:
Isaiah Odhner 2023-05-09 16:39:12 -04:00
parent b814789b17
commit 385fffb704
1 changed files with 51 additions and 1 deletions
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52
src/textual_paint/paint.py
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@ -884,11 +884,61 @@ class AnsiArtDocument:
elif instruction.role == stransi.color.ColorRole.BACKGROUND:
rgb = instruction.color.rgb
bg_color = "rgb(" + str(int(rgb.red * 255)) + "," + str(int(rgb.green * 255)) + "," + str(int(rgb.blue * 255)) + ")"
elif isinstance(instruction, stransi.SetCursor):
if instruction.move.relative:
x += instruction.move.x
y += instruction.move.y
else:
x = instruction.move.x
y = instruction.move.y
x = max(0, x)
y = max(0, y)
width = max(x, width)
height = max(y, height)
while len(document.ch) <= y:
document.ch.append([])
document.bg.append([])
document.fg.append([])
elif isinstance(instruction, stransi.SetClear):
def clear_line(row_to_clear: int, before: bool, after: bool):
cols_to_clear: List[int] = []
if before:
cols_to_clear += range(0, len(document.ch[row_to_clear]))
if after:
cols_to_clear += range(x, len(document.ch[row_to_clear]))
for col_to_clear in cols_to_clear:
document.ch[row_to_clear][col_to_clear] = ' '
document.bg[row_to_clear][col_to_clear] = default_bg
document.fg[row_to_clear][col_to_clear] = default_fg
match instruction.region:
case stransi.clear.Clear.LINE:
# Clear the current line
clear_line(y, True, True)
case stransi.clear.Clear.LINE_AFTER:
# Clear the current line after the cursor
clear_line(y, False, True)
case stransi.clear.Clear.LINE_BEFORE:
# Clear the current line before the cursor
clear_line(y, True, False)
case stransi.clear.Clear.SCREEN:
# Clear the entire screen
for row_to_clear in range(len(document.ch)):
clear_line(row_to_clear, True, True)
# and reset the cursor to home
x, y = 0, 0
case stransi.clear.Clear.SCREEN_AFTER:
# Clear the screen after the cursor
for row_to_clear in range(y, len(document.ch)):
clear_line(row_to_clear, row_to_clear > y, True)
case stransi.clear.Clear.SCREEN_BEFORE:
# Clear the screen before the cursor
for row_to_clear in range(y):
clear_line(row_to_clear, True, row_to_clear < y)
elif isinstance(instruction, stransi.SetAttribute):
# Attribute
pass
else:
raise ValueError("Unknown instruction type")
raise ValueError("Unknown instruction type " + str(type(instruction)))
document.width = width
document.height = height
# Pad rows to a consistent width.