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80 lines
2.5 KiB
CoffeeScript
80 lines
2.5 KiB
CoffeeScript
app = angular.module 'pdfPage', []
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app.directive 'pdfPage', ['$timeout', ($timeout) ->
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{
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require: '^pdfViewer',
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template: '''
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<div class="pdf-canvas"></div>
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<div class="plv-text-layer text-layer"></div>
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<div class="plv-annotations-layer annotations-layer"></div>
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<div class="plv-highlights-layer highlights-layer"></div>
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'''
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link: (scope, element, attrs, ctrl) ->
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canvasElement = $(element).find('.pdf-canvas')
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textElement = $(element).find('.text-layer')
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annotationsElement = $(element).find('.annotations-layer')
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highlightsElement = $(element).find('.highlights-layer')
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updatePageSize = (size) ->
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element.height(Math.floor(size[0]))
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element.width(Math.floor(size[1]))
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scope.page.sized = true
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isVisible = (containerSize) ->
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elemTop = element.offset().top - containerSize[2]
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elemBottom = elemTop + element.innerHeight()
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visible = (elemTop < containerSize[1] and elemBottom > 0)
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scope.page.visible = visible
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scope.page.elemTop = elemTop
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scope.page.elemBottom = elemBottom
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return visible
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renderPage = () ->
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scope.document.renderPage {
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canvas: canvasElement,
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text: textElement
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annotations: annotationsElement
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highlights: highlightsElement
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}, scope.page.pageNum
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pausePage = () ->
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scope.document.pause {
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canvas: canvasElement,
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text: textElement
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}, scope.page.pageNum
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# keep track of our page element, so we can access it in the
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# parent with scope.pages[i].element
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scope.page.element = element
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if (!scope.page.sized && scope.defaultPageSize)
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updatePageSize scope.defaultPageSize
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if scope.page.current
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console.log 'we must scroll to this page', scope.page.pageNum,
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'at position', scope.page.position
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renderPage()
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# this is the current page, we want to scroll it into view
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scope.document.getPdfViewport(scope.page.pageNum).then (viewport) ->
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scope.page.viewport = viewport
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ctrl.setPdfPosition(scope.page, scope.page.position)
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scope.$watch 'defaultPageSize', (defaultPageSize) ->
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return unless defaultPageSize?
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updatePageSize defaultPageSize
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watchHandle = scope.$watch 'containerSize', (containerSize, oldVal) ->
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return unless containerSize?
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return unless scope.page.sized
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oldVisible = scope.page.visible
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newVisible = isVisible containerSize
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scope.page.visible = newVisible
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if newVisible && !oldVisible
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renderPage()
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# TODO deregister this listener after the page is rendered
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#watchHandle()
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else if !newVisible && oldVisible
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pausePage()
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}
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]
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