--***********************************************************
--**                    ROBERT JOHNSON                     **
--***********************************************************

require "ISUI/ISPanel"

ISToolTipInv = ISPanel:derive("ISToolTipInv");


--************************************************************************--
--** ISToolTipInv:initialise
--**
--************************************************************************--

function ISToolTipInv:initialise()
	ISPanel.initialise(self);
end

function ISToolTipInv:setItem(item)
	self.item = item;
end

function ISToolTipInv:onMouseDown(x, y)
	return false
end

function ISToolTipInv:onMouseUp(x, y)
	return false
end

function ISToolTipInv:onMouseDownOutside(x, y)
    if self.followMouse then
        self:setVisible(false)
    end
end

function ISToolTipInv:onRightMouseDown(x, y)
	return false
end

function ISToolTipInv:onRightMouseUp(x, y)
	return false
end

--************************************************************************--
--** ISToolTipInv:render
--**
--************************************************************************--

function ISToolTipInv:prerender()
	if self.owner and not self.owner:isReallyVisible() then
		self:removeFromUIManager()
		self:setVisible(false)
		return
	end
end

function ISToolTipInv:render()
	-- we render the tool tip for inventory item only if there's no context menu showed
	if not ISContextMenu.instance or not ISContextMenu.instance.visibleCheck then

     local mx = getMouseX() + 24;
     local my = getMouseY() + 24;
     if not self.followMouse then
        mx = self:getX()
        my = self:getY()
        if self.anchorBottomLeft then
            mx = self.anchorBottomLeft.x
            my = self.anchorBottomLeft.y
        end
     end

        self.tooltip:setX(mx+11);
        self.tooltip:setY(my);

        self.tooltip:setWidth(50)
        self.tooltip:setMeasureOnly(true)
        self.item:DoTooltip(self.tooltip);
        self.tooltip:setMeasureOnly(false)

     -- clampy x, y

     local myCore = getCore();
     local maxX = myCore:getScreenWidth();
     local maxY = myCore:getScreenHeight();

     local tw = self.tooltip:getWidth();
     local th = self.tooltip:getHeight();
     
     self.tooltip:setX(math.max(0, math.min(mx + 11, maxX - tw - 1)));
    if not self.followMouse and self.anchorBottomLeft then
        self.tooltip:setY(math.max(0, math.min(my - th, maxY - th - 1)));
    else
        self.tooltip:setY(math.max(0, math.min(my, maxY - th - 1)));
    end

     self:setX(self.tooltip:getX() - 11);
     self:setY(self.tooltip:getY());
     self:setWidth(tw + 11);
     self:setHeight(th);

	if self.followMouse then
		self:adjustPositionToAvoidOverlap({ x = mx - 24 * 2, y = my - 24 * 2, width = 24 * 2, height = 24 * 2 })
	end

     self:drawRect(0, 0, self.width, self.height, self.backgroundColor.a, self.backgroundColor.r, self.backgroundColor.g, self.backgroundColor.b);
     self:drawRectBorder(0, 0, self.width, self.height, self.borderColor.a, self.borderColor.r, self.borderColor.g, self.borderColor.b);
     self.item:DoTooltip(self.tooltip);
	end
end


function ISToolTipInv:adjustPositionToAvoidOverlap(avoidRect)
	local myRect = { x = self.x, y = self.y, width = self.width, height = self.height }
	if self:overlaps(myRect, avoidRect) then
		local r = self:placeRight(myRect, avoidRect)
		if self:overlaps(r, avoidRect) then
			r = self:placeAbove(myRect, avoidRect)
			if self:overlaps(r, avoidRect) then
				r = self:placeLeft(myRect, avoidRect)
			end
		end
		self.tooltip:setX(r.x)
		self.tooltip:setY(r.y)
		self:setX(r.x - 11)
		self:setY(r.y)
	end
end

function ISToolTipInv:overlaps(r1, r2)
	return r1.x + r1.width > r2.x and r1.x < r2.x + r2.width and
			r1.y + r1.height > r2.y and r1.y < r2.y + r2.height
end

function ISToolTipInv:placeLeft(r1, r2)
	local r = r1
	r.x = math.max(0, r2.x - r.width - 8)
	return r
end

function ISToolTipInv:placeRight(r1, r2)
	local r = r1
	r.x = r2.x + r2.width + 8
	r.x = math.min(r.x, getCore():getScreenWidth() - r.width)
	return r
end

function ISToolTipInv:placeAbove(r1, r2)
	local r = r1
	r.y = r2.y - r.height - 8
	r.y = math.max(0, r.y)
	return r
end

function ISToolTipInv:setOwner(ui)
	self.owner = ui
end

function ISToolTipInv:setCharacter(chr)
	self.tooltip:setCharacter(chr)
end

--************************************************************************--
--** ISToolTipInv:new
--**
--************************************************************************--
function ISToolTipInv:new(item)
   local o = {}
   o = ISPanel:new(0, 0, 0, 0);
   setmetatable(o, self)
   self.__index = self
   o.tooltip = ObjectTooltip.new();
   o.item = item;

   o.tooltip:setX(0);
   o.tooltip:setY(0);

   o.x = 0;
   o.y = 0;

   o.toolTipDone = false;

   o.backgroundColor = {r=0, g=0, b=0, a=0.5};
   o.borderColor = {r=0.4, g=0.4, b=0.4, a=1};
   o.width = 0;
   o.height = 0;
   o.anchorLeft = false;
   o.anchorRight = false;
   o.anchorTop = false;
   o.anchorBottom = false;

   o.owner = nil
   o.followMouse = true
   o.anchorBottomLeft = nil
   return o;
end