gooey

-- API for building a basic GUI on advanced monitors

function drawBox(startX,startY,endX,endY,boxColour,display)
    display = display or term
    display.setBackgroundColour(boxColour)
    for Y = startY, endY do
        for X = startX, endX do
            display.setCursorPos(X,Y)
            display.write(" ")
        end
    end
end

function writeAt(X,Y,message,display)
    display = display or term
    display.setCursorPos(X,Y)
    display.write(message)
end

function drawButton(startX,startY,endX,endY,message,boxColour,clickFunc,clickParams,display)

    display = display or term
    clickParams = clickParams or {}
    display.setBackgroundColour(boxColour)
    triggerZones = {}
    for Y = startY, endY do
        for X = startX, endX do
            display.setCursorPos(X,Y)
            display.write(" ")
            triggerZones[X .. "," .. Y] = {["func"] = clickFunc,["params"] = clickParams}
        end
    end
    writeAt(math.floor(startX + (endX - startX  - #message)/2),math.floor(startY + (endY-startY)/2),message,display)
    return triggerZones

end

function drawImage(startX,startY,image,display)
    display = display or term
    for Y, line in pairs(image) do
        for X, col in pairs(line) do
            display.setBackgroundColour(col)
            display.setCursorPos(X,Y)
            display.write(" ")
        end
    end
end

function buttonHandler(triggerZones, monitor, time)
    notPressed = true
    while notPressed do
        if monitor == nil or monitor == term then
            event, button, xPos, yPos = os.pullEvent("mouse_click")
        else
            event, side, xPos, yPos = os.pullEvent("monitor_touch")
        end
        index = (xPos .. "," .. yPos)
        if triggerZones[index] ~= nil
        then
            p = triggerZones[index].params
            triggerZones[index].func(p[1],p[2],p[3],p[4],p[5],p[6])
            notPressed = false
        end
    end
end

function clickMenu(menuTitle,menuItems, display)
    display = display or term
    w, h = display.getSize()
    display.setTextColor(colours.black)
    display.setBackgroundColor(colours.black)
    display.clear()
    drawBox(2,2,w - 7,2,colours.lightGrey,display)
    writeAt(math.floor((w - #menuTitle)/2),2,menuTitle,display)
    buttons = {}
    for i = 1,#menuItems do
        buttons = commonFunctions.combineTables(buttons,drawButton(2,i * 2 + 2,w - 7,i * 2 + 2,menuItems[i].text,colours.lightGrey,menuItems[i].func,menuItems[i].params,display))
    end
    buttonHandler(buttons,display)
end

--[[ function drawBar(horizontal, position, width, data, colour, backColour, display) -- Draws a bar as part of a bar chart right across the display
    display = display or term

    -- these two bo
    h, w = display.getSize()
    WW = {}
    Pos = {["X"] = 0, ["Y"] = 0}
    if horizontal
    then
        WW["along"] = "X"
        WW["wide"] = "Y"
        step = math.floor((w - 1) / 10)
    else
        WW["along"] = "X"
        WW["wide"] = "Y"
        step = math.floor((h - 1) / 10)
    end
    for Pos[WW.along] = 2,(10 * step) do
        for Pos[WW.wide] = position, (position + width)
        if step > 1 and (Pos[WW.along] % step) == 0 then
            display.setBackgroundColor(backColour)
        else
            display.setBackgroundColor(colour)
        end
        if ((Pos[WW.along]/(step * 10)) * 100) > data.percentage
        then
            display.setCursorPos(Pos.X,Pos.Y)
            display.write(" ")
        end
    end
    if data.label ~= nil
    then
        Pos[WW.along] = 1
        for i = 1,width do
            Pos[WW.wide] = position + (i - 1)
            display.setCursorPos(Pos.X,Pos.Y)
            display.write(data.label:sub(i,i))
        end
    end
    if data.rawNumber ~= nil
    then
        numberText = tostring(data.rawNumber)
        if horizontal
        then
            display.setCursorPos((position + width /2), ((w - numberText:len)/2))
            display.write(numberText)
        end
    end
end

function barCharts(data, title, horizontal, display) -- data should be a table of the data for the bars, which should themselves be a table containing .percentage, .rawNumber (optional) and .label (optional)

    -- set stuff up
    display = display or term
    horizontal = horizontal or false
    colourToUse = 1
    background = colour.black
    h, w = display.getSize()
    if horizontal
    then
        width = math.floor(h / len(data))
        pos = 2
    else
        width = math.floor(w / len(data))
        pos = 1
    end

    -- Get with the drawing
    display.setBackgroundColor(background)
    display.clear()
    for i = 1,#data do
        drawBar(horizontal, pos, width, data[i], colourToUse, background, display)
        pos = pos + width
        colourToUse = colourToUse * 2
    end
    display.setCursorPos((w - len(title))/2,1)
    display.setBackgroundColor(background)
    display.write(title)
end ]]--