use SCREEN_* in metrics

stepmania/Themes/default/metrics.ini

@@ -424,7 +424,7 @@ MemoryCardIcons=1
 StartX=0
 StartY=-136
 SpacingX=0
-SpacingY=240-212
+SpacingY=28
 GainFocusGroupCommand=stoptweening;linear,0.2;x,-40
 LoseFocusGroupCommand=stoptweening;linear,0.2;x,0
 GainFocusItemCommand=glowshift;effectperiod,0.5
@@ -440,7 +440,7 @@ NumColumns=4
 NumRows=10
 StartX=0
 StartY=0
-SpacingX=320-170
+SpacingX=150
 CropWidth=146
 InitCommand=horizalign,left;vertalign,top;shadowlength,2;zoom,0.5;
 
@@ -2906,10 +2906,10 @@ SwitchSeconds=0.10
 RouletteSwitchSeconds=0.05
 RouletteSlowDownSwitches=5
 LockedInitialVelocity=7
-ScrollBarX=320-172
+ScrollBarX=148
 ScrollBarHeight=368
-ItemCurveX=320-235
-ItemSpacingY=240-194
+ItemCurveX=85
+ItemSpacingY=46
 NoCurving=0
 NumWheelItems=13
 MusicWheelItemStartOnCommand=addx,SCREEN_WIDTH/2
@@ -3827,7 +3827,7 @@ CategoryY=SCREEN_CENTER_Y+190
 CategoryZoom=0.7
 CharsZoomSmall=1.0
 CharsZoomLarge=1.5
-CharsSpacingY=240-200
+CharsSpacingY=40
 ScrollingCharsColor=0.6,0.8,0.8,1
 SelectedCharsColor=0.8,1,1,1
 ReceptorArrowsY=SCREEN_CENTER_Y-140
@@ -4175,8 +4175,8 @@ AttackIconsP1StartX=SCREEN_CENTER_X-192
 AttackIconsP1StartY=SCREEN_CENTER_Y+116
 AttackIconsP2StartX=SCREEN_CENTER_X+168
 AttackIconsP2StartY=SCREEN_CENTER_Y+116
-AttackIconsSpacingX=320-278
-AttackIconsSpacingY=240-208
+AttackIconsSpacingX=42
+AttackIconsSpacingY=32
 AttackIconsP1OnCommand=addx,-SCREEN_WIDTH*0.6;bounceend,0.5;addx,SCREEN_WIDTH*0.6
 AttackIconsP1OffCommand=sleep,0.2;bouncebegin,0.5;addx,-SCREEN_WIDTH*0.6
 AttackIconsP2OnCommand=addx,SCREEN_WIDTH*0.6;bounceend,0.5;addx,-SCREEN_WIDTH*0.6