2x widget.newScrollView parent scroll not possible

Solar2D General Questions/Discussion
#1

Hello!

Here we have 2 or more “widget.newScrollView” that are in some Display Groups (only vertical and horizontal)

It works fine so far, but the parent scroller vertical will not work when i touch the horizontal the vertical movement how i can handle it? Here a screenshot and the example code:

THANKS

example
example527×873 43.6 KB

local widget = require( "widget" )

-- ScrollView listener
local function scrollListener( event )

    local phase = event.phase
    local target = event.target
    if ( phase == "began" ) then
        print( "Scroll view was touched" )
        display.getCurrentStage():setFocus( event.target)
    elseif ( phase == "moved" ) then

        if ((event.direction == nil  or event.direction == "") and  target.isHorizontal == true ) then
            print("test 111")
        elseif ((event.direction == nil  or event.direction == "") and  target.isHorizontal == false ) then
            print("test 222")
        else
            print("target.isHorizontal",target.isHorizontal , " dir", event.direction)
        end

    elseif ( event.phase == "ended" or event.phase == "cancelled" )  then
        display.getCurrentStage():setFocus( nil)
        print( "Scroll view was released" )
    end

    return true
end


local function createScroll(horizontal, width, height)
    local scroller = widget.newScrollView(
            {
                top = 0,
                left = 0,
                width = width,
                height = height,
                listener = scrollListener,
                verticalScrollDisabled = not horizontal,
                horizontalScrollDisabled =  horizontal,
            }
    )
    scroller.isHorizontal = horizontal
    return scroller
end

local scrollHorizontal = createScroll(true, 900, 1500)
local height = 2000
local width = 1000
local groupHorizontal = display.newGroup()
local rectHorizontal = display.newRect( width*0.5, height*0.5, width, height )
rectHorizontal.strokeWidth = 3
rectHorizontal:setFillColor( 0.5 )
rectHorizontal:setStrokeColor( 1, 0, 0 )
local paint = {
    type = "gradient",
    color1 = { 1, 0, 0.4 },
    color2 = { 1, 0, 0, 0.2 },
    direction = "down"
}
rectHorizontal.fill = paint
groupHorizontal:insert(rectHorizontal)
scrollHorizontal:insert(groupHorizontal)
scrollHorizontal.x = display.contentCenterX
scrollHorizontal.y = display.contentCenterY

local scrollVertical = createScroll(false, 500, 500)
local height = 5000
local width = 1500
local groupVertical = display.newGroup()
local vectVertical = display.newRect( width*0.5, height*0.5, width, height )
vectVertical.strokeWidth = 3
vectVertical:setFillColor( 0.5 )
vectVertical:setStrokeColor( 1, 0, 0 )
local paint = {
    type = "gradient",
    color1 = { 0, 1, 0.4 },
    color2 = { 0, 1, 0, 0.2 },
    direction = "left"
}
vectVertical.fill = paint
groupVertical:insert(vectVertical)
scrollVertical:insert(groupVertical)
scrollVertical.x = 250
scrollVertical.y =  500

groupHorizontal:insert(scrollVertical)
#2

The basic scrolling widget is NOT designed to embedded scrollers in scroller and then to handle scrolling against the direction of the child-scroller.

You’ll have to either:
A. Download the widget code and modify it to do this (use modified copy locally)

OR

B. Write your own scroller that supports scroller embedding in other scrollers.

OR

C. Wait for another answer from someone else. I am not the end-all on answers and there may be someone in the forums who has an elegant solution to this.

Please note: I’ve solved this exact problem before, but it was years ago. So, I know it can be done. However, that was in an older copy of widget lib and for a client so I’m not free to share my code.

1 Like
#3

Thanks for your answer, i thought that is not possible - I already written my own scroller, that can do it - but it runs not so smooth like the widget.

#4

@Kao14,

There was a similar discussion on this 2-3 months back. Please see this thread,
https://forums.solar2d.com/t/horizontal-scrollview-inside-a-vertical-scrollview/351792

In it, there was a plugin provided by @joecoronasdk. Please take a look there.

3 Likes
#5

The plugin works really well. Let me know if you have a problem with it :slight_smile:

1 Like