MIN_HEIGHT = 10 MIN_WIDTH = 300 BAR_DIM = 12 REBAR_DIM = 4 #neveragain guessAlign = (width,height,ctx,x,y)-> if !ctx.align pre_align = initAlign(ctx,x,y,width,height) else pre_align = ctx.align switch pre_align when 'right-down' return ctx.vert && 'right-down' || 'bottom-right' when 'right-up' return ctx.vert && 'right-up' || 'top-right' when 'left-down' return ctx.vert && 'left-down' || 'bottom-left' when 'left-up' return ctx.vert && 'left-up' || 'top-left' when 'bottom-right' return ctx.vert && 'right-down' || 'bottom-right' when 'bottom-left' return ctx.vert && 'left-down' || 'bottom-left' when 'top-right' return ctx.vert && 'right-up' || 'top-right' when 'top-left' return ctx.vert && 'left-up' || 'top-left' else throw new Error 'invalid align key' initAlign = (ctx,x,y,width,height)-> # log 'init align',x,width/2,ctx.view_rect.width/2 if x + width/2 < ctx.view_rect.width/2 if y + height/2 < ctx.view_rect.height/2 return ctx.vert && 'right-down' || 'bottom-right' else return ctx.vert && 'right-up' || 'top-right' else if y + height/2 < ctx.view_rect.height/2 return ctx.vert && 'left-down' || 'bottom-left' else return ctx.vert && 'left-up' || 'top-left' checkFitAlignRight = (ctx,width,height)-> Math.min(ctx.view_rect.right - (ctx.sel_x + width),0) checkFitAlignLeft = (ctx,width,height)-> Math.min((ctx.sel_x + ctx.sel_w - width) - ctx.view_rect.left,0) checkFitAlignUp = (ctx,width,height)-> Math.min((ctx.sel_y + ctx.dim - height) - ctx.view_rect.top,0) checkFitAlignDown = (ctx,width,height)-> Math.min(ctx.view_rect.bottom - (ctx.sel_y + height),0) checkFitPositionBottom = (ctx,width,height)-> Math.min(ctx.view_rect.bottom - (ctx.y + ctx.height + height),0) checkFitPositionTop = (ctx,width,height)-> Math.min((ctx.y - height) - (ctx.view_rect.top),0) checkfitPositionLeft = (ctx,width,height)-> Math.min((ctx.x - width) - (ctx.view_rect.left),0) checkfitPositionRight = (ctx,width,height)-> Math.min((ctx.view_rect.right) - (ctx.x + ctx.width + width),0) fixAlign = (align_key,ctx,width,height)-> switch align_key when 'right-down' left = checkfitPositionLeft(ctx,width,height) > checkfitPositionRight(ctx,width,height) up = checkFitAlignDown(ctx,width,height) < checkFitAlignUp(ctx,width,height) if left if up then return 'left-up' else return 'left-down' else if up then return 'right-up' else return 'right-down' when 'right-up' left = checkfitPositionLeft(ctx,width,height) > checkfitPositionRight(ctx,width,height) up = checkFitAlignDown(ctx,width,height) < checkFitAlignUp(ctx,width,height) if left if down then return 'left-down' else return 'left-up' else if down then return 'right-down' else return 'right-up' when 'left-down' right = checkfitPositionLeft(ctx,width,height) < checkfitPositionRight(ctx,width,height) up = checkFitAlignDown(ctx,width,height) < checkFitAlignUp(ctx,width,height) if right if up then return 'right-up' else return 'right-down' else if up then return 'left-up' else return 'left-down' when 'left-up' right = checkfitPositionLeft(ctx,width,height) < checkfitPositionRight(ctx,width,height) down = checkFitAlignUp(ctx,width,height) < checkFitAlignDown(ctx,width,height) if right if down then return 'right-down' else return 'right-up' else if down then return 'left-down' else return 'left-up' when 'bottom-right' top = checkFitPositionBottom(ctx,width,height) < checkFitPositionTop(ctx,width,height) left = checkFitAlignRight(ctx,width,height) < checkFitAlignLeft(ctx,width,height) if top if left then return 'top-left' else return 'top-right' else if left then return 'bottom-left' else return 'bottom-right' when 'bottom-left' top = checkFitPositionTop(ctx,width,height) > checkFitPositionBottom(ctx,width,height) right = checkFitAlignLeft(ctx,width,height) < checkFitAlignRight(ctx,width,height) if top if right then return 'top-right' else return 'top-left' else if right then return 'bottom-right' else return 'bottom-left' when 'top-right' bottom = checkFitPositionBottom(ctx,width,height) > checkFitPositionTop(ctx,width,height) left = checkFitAlignLeft(ctx,width,height) > checkFitAlignRight(ctx,width,height) if bottom if left then return 'bottom-left' else return 'bottom-right' else if left then return 'top-left' else return 'top-right' when 'top-left' bottom = checkFitPositionBottom(ctx,width,height) > checkFitPositionTop(ctx,width,height) right = checkFitAlignLeft(ctx,width,height) < checkFitAlignRight(ctx,width,height) if bottom if right then return 'bottom-right' else return 'bottom-left' else if right then return 'top-right' else return 'top-left' clampHeight = (ctx,height)-> if ctx.root && ctx.clamp_height return Math.max(Math.min(ctx.view_rect.height- BAR_DIM - REBAR_DIM,Math.min(ctx.clamp_height,height)),MIN_HEIGHT) else if ctx.root return Math.max(Math.min(ctx.view_rect.height - BAR_DIM - REBAR_DIM,height),MIN_HEIGHT) else return Math.max(Math.min(height,ctx.view_rect.height),MIN_HEIGHT) clampWidth = (ctx,width)-> if ctx.root && ctx.clamp_width return Math.max(Math.min(ctx.view_rect.width - BAR_DIM - REBAR_DIM,ctx.clamp_width),MIN_WIDTH) else if ctx.root return Math.min(ctx.view_rect.width - BAR_DIM - REBAR_DIM,MIN_WIDTH) else return Math.max(Math.min(width,ctx.view_rect.width),MIN_WIDTH) getAlignDirections = (align_key)-> a = align_key.split('-') right = a[0] == 'right' left = a[0] == 'left' down = a[1] == 'down' up = a[1] == 'up' bottom = a[0] == 'bottom' top = a[0] == 'top' return [left,right,bottom,top,up,down] BAR_DIM = 12 REBAR_DIM = 4 DOT_DIM = 4 getPosition = (width,height,ctx,align_key)-> x = y = 0 switch align_key when 'right-down' x = ctx.x + ctx.width y = ctx.sel_y when 'right-up' x = (ctx.x + ctx.width) y = ctx.sel_y + ctx.dim - height when 'left-down' x = ctx.x - width y = ctx.sel_y when 'left-up' x = (ctx.x - width) y = ctx.sel_y + ctx.dim - height when 'bottom-right' x = ctx.sel_x y = ctx.y+ctx.height when 'bottom-left' x = (ctx.sel_x + ctx.sel_w) - width y = ctx.y+ctx.height when 'top-right' x = ctx.sel_x y = ctx.y-height when 'top-left' x = (ctx.sel_x + ctx.sel_w) - width y = ctx.y-height else throw new Error 'invalid align key' return [x,y] clampPosition = (ctx,x,y,width,height,align_key)-> offset_x = 0 offset_y = 0 add_offset_x = 0 add_offset_y = 0 if x + width > ctx.view_rect.right offset_x = ctx.view_rect.right - (x + width) else if x < ctx.view_rect.left offset_x = ctx.view_rect.left - x if y + height > ctx.view_rect.bottom offset_y = ctx.view_rect.bottom - (y + height) else if y < ctx.view_rect.top offset_y = ctx.view_rect.top - y if offset_y && !offset_x if align_key == 'top-left' || align_key == 'bottom-left' add_offset_x = -ctx.dim/2 else if align_key == 'top-right' || align_key == 'bottom-right' add_offset_x = ctx.dim/2 if offset_x && !offset_y if align_key == 'right-down' || align_key == 'left-down' add_offset_y = -ctx.dim/2 else if align_key == 'right-up' || align_key == 'left-up' add_offset_y = ctx.dim/2 offset_x += add_offset_x offset_y += add_offset_y return [offset_x,offset_y] export {clampPosition,getPosition,fixAlign,guessAlign,clampHeight,clampWidth}