bendns' repos / chess
online multiplayer chess game (note server currently down)
Diffstat (limited to 'ui/chat/ExpandableTextEdit.gd')
-rw-r--r--ui/chat/ExpandableTextEdit.gd76
1 files changed, 76 insertions, 0 deletions
diff --git a/ui/chat/ExpandableTextEdit.gd b/ui/chat/ExpandableTextEdit.gd
new file mode 100644
index 0000000..2e338f5
--- /dev/null
+++ b/ui/chat/ExpandableTextEdit.gd
@@ -0,0 +1,76 @@
+# https://gist.github.com/MattUV/469ad2be96961c0afe8dfc1bf0932f76
+class_name ExpandableTextEdit
+extends TextEdit
+
+export(bool) var expand := true
+export(int) var max_lines := 5
+
+var scroll_bar
+
+onready var font = get_font("font")
+var line_spacing
+var line_height
+var line_count = -1
+
+
+func _ready():
+ scroll_bar = _get_vscroll_bar()
+ line_spacing = _get_line_spacing()
+ line_height = font.get_height() + line_spacing
+ line_count = _get_real_line_count()
+ _update_height(line_count)
+
+ connect("text_changed", self, "_text_changed")
+
+
+func _get_line_spacing():
+ var spacing = 4
+ if get_constant("linespacing") != null:
+ spacing = get_constant("line_spacing")
+
+ return spacing
+
+
+func _get_real_line_count():
+ var count = get_line_count()
+ var lines_to_add = 0
+ var scroll_size = scroll_bar.rect_size.x if scroll_bar.visible else 0
+
+ # Loop over every actual line in the TextEdit
+ for i in count:
+ var line = get_line(i) # Get the string of the line
+ var width = font.get_string_size(line).x
+ if width > rect_size.x - scroll_size:
+ lines_to_add += int(width / (rect_size.x - scroll_size))
+
+ return count + lines_to_add
+
+
+func _get_vscroll_bar():
+ for c in get_children():
+ if c is VScrollBar:
+ return c
+
+
+func _update_height(count):
+ if !expand:
+ return
+
+ var lines_to_show = count
+ if lines_to_show > max_lines:
+ lines_to_show = max_lines
+
+ rect_min_size.y = lines_to_show * (line_height + line_spacing * 1.45)
+ rect_size.y = rect_min_size.y
+ update()
+
+
+func _text_changed():
+ _on_text_changed(false)
+
+
+func _on_text_changed(force = false):
+ var new_line_count = _get_real_line_count()
+ if force or line_count != new_line_count:
+ line_count = new_line_count
+ _update_height(new_line_count)