display: automatically update display scale

This setting has been removed, since there is a property that actually
updates properly and dynamically based on which display the mpv window
is on. I figured this property existed, but I never bothered actually
adding it until now.

src/Mouse.moon

@@ -1,18 +1,18 @@
 class Mouse
-	osdScale = settings['display-scale-factor']
-
 	@@x, @@y = -1, -1
+	@@_rawX, @@_rawY = -1, -1
 	@@inWindow, @@dead = false, true
 	@@clickX, @@clickY = -1, -1
 	@@clickPending = false
 
-	scaledPosition = ->
+	scaledPosition = =>
 		x, y = mp.get_mouse_pos!
-		return math.floor( x/osdScale ), math.floor( y/osdScale )
+		@_rawX, @_rawY = x, y
+		return math.floor( x/Window.osdScale ), math.floor( y/Window.osdScale )
 
 	@update: =>
 		oldX, oldY = @x, @y
-		@x, @y = scaledPosition!
+		@x, @y = scaledPosition @
 		if @dead and (oldX != @x or oldY != @y)
 			@dead = false
 		if not @dead and @clickPending
@@ -22,7 +22,7 @@ class Mouse
 
 	@cacheClick: =>
 		if not @dead
-			@clickX, @clickY = scaledPosition!
+			@clickX, @clickY = scaledPosition @
 			@clickPending = true
 		else
 			@dead = false

src/Window.moon

@@ -1,13 +1,18 @@
 class Window
-	osdScale = settings['display-scale-factor']
+	@@osdScale = mp.get_property_number("display-hidpi-scale", 1)
 
 	@@w, @@h = 0, 0
+	@@_rawW, @@_rawH = 0, 0
 
 	@update: =>
 		w, h = mp.get_osd_size!
+		osdScale = mp.get_property_number("display-hidpi-scale", 1)
+
+		@_rawW, @_rawH = w, h
 		w, h = math.floor( w/osdScale ), math.floor( h/osdScale )
-		if w != @w or h != @h
-			@w, @h = w, h
+
+		if w != @w or h != @h or osdScale != @osdScale
+			@w, @h, @osdScale = w, h, osdScale
 			return true
 		else
 			return false

src/settings.moon

@@ -14,13 +14,6 @@ Sets the height of the rectangular area at the top of the screen that shows the
 file name and system time when the mouse is hovered over it.
 ]]
 
-settings['display-scale-factor'] = 1
-helpText['display-scale-factor'] = [[
-Acts as a multiplier to increase the size of every UI element. Useful for high-
-DPI displays that cause the UI to be rendered too small (happens at least on
-macOS).
-]]
-
 settings['default-style'] = [[\fnSource Sans Pro\b1\bord2\shad0\fs30\c&HFC799E&\3c&H2D2D2D&]]
 helpText['default-style'] = [[
 Default style that is applied to all UI elements. A string of ASS override tags.

torque-progressbar.conf

@@ -7,11 +7,6 @@ hover-zone-height=40
 # file name and system time when the mouse is hovered over it.
 top-hover-zone-height=40
 
-# Acts as a multiplier to increase the size of every UI element. Useful for high-
-# DPI displays that cause the UI to be rendered too small (happens at least on
-# macOS).
-display-scale-factor=1
-
 # Default style that is applied to all UI elements. A string of ASS override tags.
 # Individual elements have their own style settings which override the tags here.
 # Changing the font will likely require changing the hover-time margin settings