Hello everybody, its been a while since I don’t ask anything here.
I’m with a problem in a app that I’m developing. This app should be an online magzine reader, so it need to pinch zoom, pan map and also “slide” listener, so I can zoom the pages, pass to another and etc.
So I’ve searched online for an multitouch library and I found this one :
It seems to work fine, but since it’s activateded my slide listener stop working. Also, I’ve tried to do something just like : http://developer.coronalabs.com/code/multi-point-pinch-zoom-rotate
function multitouch(e) if (#e.list \> 1) then if(e.phase == "began") then doPinchZoom(e.target,e.list,true,false,true) elseif (e.phase == "moved") then doPinchZoom(e.target,e.list,true,false,true) else doPinchZoom(e.target,e.list,true,false,true) end end if (#e.list == 1) then if(e.y - e.yStart \< 0) then --slide backward elseif (e.y - yStart \> 0) then --slide foward end print(e.list[1].y) end return true end
But it doesn’t work since it can’t detect event phases with just one touch. I’ve tried so many thing and I couldn’t have sucess, so thats why I’m here. I’ll post the full code here so I can be easy to help me.
local storyboard = require( "storyboard" ) require ("alagartaFunctions") require ("multitouch") require ("pinchlib") system.activate("multitouch") local scene = storyboard.newScene() local page local yStart = nil function scene:createScene( event ) local group = self.view end function scene:enterScene( event ) touchCount = 0 print("readingScene") local group = self.view print("page number: ",event.params.page) print("edition number: ",event.params.numberOfEdition) print("Scene before: ",event.params.sceneBefore) numberE = event.params.numberOfEdition storyboard.removeScene("downloadScene") local extension = extension(numberE) if event.params.sceneBefore == "menuScene" then page = display.newImage("cover"..event.params.numberOfEdition..extension,system.DocumentsDirectory,halfW,halfH) page.isVisible = false local proportion = page.height/page.width page = display.newImageRect("cover"..event.params.numberOfEdition..extension,system.DocumentsDirectory,560,560\*proportion) page.id = event.params.page page:rotate(-90) page.x = halfW page.y = halfH transition.fadeIn(page , {time = 1000, x= halfW, y=halfH}) elseif event.params.sceneBefore == "downloadScene" or event.params.sceneBefore == "readingSceneZoom" or event.params.sceneBefore == "readingSceneMenu" then page = display.newImage("page-"..event.params.numberOfEdition.."-"..event.params.page..extension,system.DocumentsDirectory,halfW,halfH) page.isVisible = false local proportion = page.height/page.width page = display.newImageRect("page-"..event.params.numberOfEdition.."-"..event.params.page..extension,system.DocumentsDirectory,560,560\*proportion) page.id = event.params.page page:rotate(-90) page.x = halfW page.y = halfH transition.to(page , {time = 1000, alpha = 1, x= halfW, y=halfH}) end system.activate("multitouch") pages = display.newGroup() pages:insert(page) menuTab = display.newImage("menuTab.png",17,halfH) menuTab:rotate(-90) menuTab.alpha = 0.8 function tapMenuTab (e) if (e.numTaps == 1) then --open menu local options = { effect = "crossFade", time = 500, params = { numberOfEdition = numberE, page = page.id, sceneBefore = "readingScene"} } storyboard.gotoScene("readingSceneMenu",options) end end function slide (e) print("slide") print("Start:",e.yStart,"End:",e.y) if(touchCount == 1) then if(page.xScale == 1) then if (e.y - e.yStart) \< 0 then --print(page.id) if page.id == 1 then --first page else local options = { effect = "crossFade", time = 500, params = { numberOfEdition = numberE, page = page.id - 1, sceneBefore = "readingScene"} } --print(1) -- backward storyboard.gotoScene("downloadScene", options) return true end elseif (e.y - e.yStart \> 0) then --print(page.id) if page.id == Data[numberE].numberOfPages then --last page on the screen else local options = { effect = "crossFade", time = 500, params = { numberOfEdition = numberE, page = page.id + 1, sceneBefore = "readingScene"} } --print(2) -- foward storyboard.gotoScene("downloadScene", options) return true end end end end if (event.phase == "ended") then print("acabo") end end function countTouch(event) print(touchCount) if (event.phase == "began") then --print("begin") touchCount = touchCount +1 elseif (event.phase == "ended") then touchCount = touchCount -1 end if (touchCount \> 1) then system.activate("multitouch") else system.deactivate("multitouch") end end function multitouch(e) if (#e.list \> 1) then if(e.phase == "began") then doPinchZoom(e.target,e.list,true,false,true) elseif (e.phase == "moved") then doPinchZoom(e.target,e.list,true,false,true) else doPinchZoom(e.target,e.list,true,false,true) end end if (#e.list == 1) then if (yStart == nil) then yStart = e.y print("yStart") else if(e.y - yStart \< 0) then elseif (e.y - yStart \> 0) then end end print(e.list[1].y) end return true end pages:addEventListener("touch",slide) --pages:addEventListener("touch",countTouch) pages:addEventListener("multitouch",multitouch) menuTab:addEventListener("tap",tapMenuTab) end function scene:willExitScene( event ) end function scene:exitScene( event ) local function removePage() pages:removeSelf() pages = nil page:removeSelf() page = nil menuTab:removeSelf() menuTab = nil end transition.fadeOut(page , {time = 500, onComplete = removePage}) end function scene:destroyScene( event ) end scene:addEventListener( "createScene", scene ) scene:addEventListener( "enterScene", scene ) scene:addEventListener( "willExitScene", scene) scene:addEventListener( "exitScene", scene ) scene:addEventListener( "destroyScene", scene ) --------------------------------------------------------------------------------- return scene