mirror of
https://github.com/openseadragon/openseadragon.git
synced 2024-11-24 22:26:10 +03:00
Merge pull request #365 from avandecreme/optimization
Overlays performance optimization. See #359
This commit is contained in:
iangilman
commit
693b9e2e89
@ -78,7 +78,11 @@
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* @param {OpenSeadragon.OverlayPlacement} [options.placement=OpenSeadragon.OverlayPlacement.TOP_LEFT]
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* Relative position to the viewport.
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* Only used if location is a {@link OpenSeadragon.Point}.
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* @param {OpenSeadragon.Overlay.OnDrawCallback} options.onDraw
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* @param {OpenSeadragon.Overlay.OnDrawCallback} [options.onDraw]
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* @param {Boolean} [options.checkResize=true] Set to false to avoid to
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* check the size of the overlay everytime it is drawn when using a
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* {@link OpenSeadragon.Point} as options.location. It will improve
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* performances but will cause a misalignment if the overlay size changes.
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*/
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$.Overlay = function( element, location, placement ) {
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@ -125,6 +129,8 @@
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options.placement :
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$.OverlayPlacement.TOP_LEFT;
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this.onDraw = options.onDraw;
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this.checkResize = options.checkResize === undefined ?
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true : options.checkResize;
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};
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$.Overlay.prototype = /** @lends OpenSeadragon.Overlay.prototype */{
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@ -212,19 +218,12 @@
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var element = this.element,
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style = this.style,
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scales = this.scales,
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drawerCenter = new $.Point(
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viewport.viewer.drawer.canvas.width / 2,
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viewport.viewer.drawer.canvas.height / 2
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),
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degrees = viewport.degrees,
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position = viewport.pixelFromPoint(
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this.bounds.getTopLeft(),
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true
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),
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size = viewport.deltaPixelsFromPoints(
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this.bounds.getSize(),
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true
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),
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size,
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overlayCenter;
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if ( element.parentNode != container ) {
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@ -232,10 +231,18 @@
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element.prevElementParent = element.parentNode;
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element.prevNextSibling = element.nextSibling;
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container.appendChild( element );
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this.size = $.getElementSize( element );
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}
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if ( !scales ) {
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this.size = $.getElementSize( element );
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if ( scales ) {
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size = viewport.deltaPixelsFromPoints(
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this.bounds.getSize(),
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true
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);
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} else if ( this.checkResize ) {
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size = $.getElementSize( element );
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} else {
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size = this.size;
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}
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this.position = position;
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@ -254,6 +261,10 @@
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if( degrees !== 0 && this.scales ) {
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overlayCenter = new $.Point( size.x / 2, size.y / 2 );
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var drawerCenter = new $.Point(
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viewport.viewer.drawer.canvas.width / 2,
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viewport.viewer.drawer.canvas.height / 2
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);
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position = position.plus( overlayCenter ).rotate(
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degrees,
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drawerCenter
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@ -263,10 +274,10 @@
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size = new $.Point( Math.abs( size.x ), Math.abs( size.y ) );
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}
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// call the onDraw callback if there is one to allow, this allows someone to overwrite
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// call the onDraw callback if it exists to allow one to overwrite
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// the drawing/positioning/sizing of the overlay
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if (this.onDraw) {
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this.onDraw(position, size, element);
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if ( this.onDraw ) {
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this.onDraw( position, size, element );
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} else {
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style.left = position.x + "px";
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style.top = position.y + "px";
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@ -2045,22 +2045,31 @@ function getOverlayObject( viewer, overlay ) {
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var location = overlay.location;
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if ( !location ) {
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var rect = ( overlay.height && overlay.width ) ? new $.Rect(
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overlay.x || overlay.px,
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overlay.y || overlay.py,
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overlay.width,
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overlay.height
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) : new $.Point(
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overlay.x || overlay.px,
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overlay.y || overlay.py
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);
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if( overlay.px !== undefined ) {
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//if they specified 'px' so it's in pixel coordinates so
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//we need to translate to viewport coordinates
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rect = viewer.viewport.imageToViewportRectangle( rect );
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if ( overlay.width && overlay.height ) {
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location = overlay.px !== undefined ?
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viewer.viewport.imageToViewportRectangle( new $.Rect(
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overlay.px,
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overlay.py,
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overlay.width,
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overlay.height
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) ) :
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new $.Rect(
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overlay.x,
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overlay.y,
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overlay.width,
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overlay.height
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);
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} else {
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location = overlay.px !== undefined ?
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viewer.viewport.imageToViewportCoordinates( new $.Point(
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overlay.px,
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overlay.py
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) ) :
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new $.Point(
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overlay.x,
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overlay.y
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);
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}
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location = overlay.placement ? viewer.viewport.pointFromPixel( rect ) :
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rect;
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}
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var placement = overlay.placement;
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@ -2072,7 +2081,8 @@ function getOverlayObject( viewer, overlay ) {
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element: element,
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location: location,
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placement: placement,
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onDraw: overlay.onDraw
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onDraw: overlay.onDraw,
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checkResize: overlay.checkResize
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});
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}
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217
test/overlays.js
217
test/overlays.js
@ -6,9 +6,9 @@
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module( "Overlays", {
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setup: function() {
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var example = $( '<div id="example-overlays"></div>' ).appendTo( "#qunit-fixture" );
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var fixedOverlay = $( '<div id="fixed-overlay"></div>' ).appendTo(example);
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fixedOverlay.width(70);
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fixedOverlay.height(60);
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var fixedOverlay = $( '<div id="fixed-overlay"></div>' ).appendTo( example );
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fixedOverlay.width( 70 );
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fixedOverlay.height( 60 );
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testLog.reset();
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},
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@ -186,7 +186,7 @@
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equal( viewer.currentOverlays.length, 0, "No overlay should be open." );
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var rect = new OpenSeadragon.Rect( 0.1, 0.1, 0.1, 0.1 );
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var overlay = $( "<div/>" ).prop("id", "overlay").get( 0 );
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var overlay = $( "<div/>" ).prop( "id", "overlay" ).get( 0 );
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viewer.addOverlay( overlay, rect );
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equal( viewer.overlays.length, 0, "No manual overlay should be added as global overlay." );
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equal( viewer.currentOverlays.length, 1, "A manual overlay should be open." );
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@ -221,7 +221,7 @@
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viewer = OpenSeadragon( {
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id: 'example-overlays',
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prefixUrl: '/build/openseadragon/images/',
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tileSources: [ '/test/data/testpattern.dzi', '/test/data/testpattern.dzi' ],
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tileSources: '/test/data/testpattern.dzi',
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springStiffness: 100, // Faster animation = faster tests
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overlays: [ {
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px: 13,
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@ -232,8 +232,9 @@
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}, {
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px: 400,
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py: 500,
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id: "fixed-overlay"
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}]
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id: "fixed-overlay",
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placement: "TOP_LEFT"
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} ]
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} );
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function checkOverlayPosition( contextMessage ) {
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@ -284,7 +285,7 @@
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viewer = OpenSeadragon( {
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id: 'example-overlays',
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prefixUrl: '/build/openseadragon/images/',
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tileSources: [ '/test/data/testpattern.dzi', '/test/data/testpattern.dzi' ],
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tileSources: '/test/data/testpattern.dzi',
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springStiffness: 100, // Faster animation = faster tests
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overlays: [ {
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x: 0.2,
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@ -292,10 +293,11 @@
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width: 0.5,
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height: 0.1,
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id: "overlay"
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},{
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}, {
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x: 0.5,
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y: 0.6,
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id: "fixed-overlay"
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id: "fixed-overlay",
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placement: "TOP_LEFT"
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} ]
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} );
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@ -309,9 +311,9 @@
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equal( actPosition.top, expPosition.y, "Y position mismatch " + contextMessage );
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var expectedSize = viewport.deltaPixelsFromPoints(
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new OpenSeadragon.Point(0.5, 0.1));
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new OpenSeadragon.Point( 0.5, 0.1 ) );
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equal( $( "#overlay" ).width(), expectedSize.x, "Width mismatch " + contextMessage );
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equal( $( "#overlay" ).height( ), expectedSize.y, "Height mismatch " + contextMessage );
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equal( $( "#overlay" ).height(), expectedSize.y, "Height mismatch " + contextMessage );
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expPosition = viewport.viewportToViewerElementCoordinates(
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@ -341,4 +343,193 @@
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} );
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} );
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} )();
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asyncTest( 'Overlays placement', function() {
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var scalableOverlayLocation = new OpenSeadragon.Rect( 0.2, 0.1, 0.5, 0.1 );
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var fixedOverlayLocation = new OpenSeadragon.Point( 0.5, 0.6 );
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viewer = OpenSeadragon( {
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id: 'example-overlays',
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prefixUrl: '/build/openseadragon/images/',
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tileSources: '/test/data/testpattern.dzi',
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springStiffness: 100, // Faster animation = faster tests
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overlays: [ {
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x: scalableOverlayLocation.x,
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y: scalableOverlayLocation.y,
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width: scalableOverlayLocation.width,
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height: scalableOverlayLocation.height,
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id: "overlay",
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placement: "TOP_LEFT"
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}, {
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x: fixedOverlayLocation.x,
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y: fixedOverlayLocation.y,
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id: "fixed-overlay",
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placement: "TOP_LEFT"
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} ]
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} );
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// Scalable overlays are always TOP_LEFT
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function checkScalableOverlayPosition( contextMessage ) {
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var viewport = viewer.viewport;
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var expPosition = viewport.viewportToViewerElementCoordinates(
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new OpenSeadragon.Point( 0.2, 0.1 ) ).apply( Math.floor );
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var actPosition = $( "#overlay" ).position();
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equal( actPosition.left, expPosition.x, "X position mismatch " + contextMessage );
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equal( actPosition.top, expPosition.y, "Y position mismatch " + contextMessage );
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}
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function checkFixedOverlayPosition( expectedOffset, contextMessage ) {
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var viewport = viewer.viewport;
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var expPosition = viewport.viewportToViewerElementCoordinates(
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new OpenSeadragon.Point( 0.5, 0.6 ) )
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.apply( Math.floor )
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.plus( expectedOffset );
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var actPosition = $( "#fixed-overlay" ).position();
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equal( actPosition.left, expPosition.x, "Fixed overlay X position mismatch " + contextMessage );
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equal( actPosition.top, expPosition.y, "Fixed overlay Y position mismatch " + contextMessage );
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}
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waitForViewer( function() {
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checkScalableOverlayPosition( "with TOP_LEFT placement." );
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checkFixedOverlayPosition( new OpenSeadragon.Point( 0, 0 ),
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"with TOP_LEFT placement." );
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viewer.updateOverlay( "overlay", scalableOverlayLocation,
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OpenSeadragon.OverlayPlacement.CENTER );
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viewer.updateOverlay( "fixed-overlay", fixedOverlayLocation,
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OpenSeadragon.OverlayPlacement.CENTER );
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setTimeout( function() {
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checkScalableOverlayPosition( "with CENTER placement." );
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checkFixedOverlayPosition( new OpenSeadragon.Point( -35, -30 ),
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"with CENTER placement." );
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viewer.updateOverlay( "overlay", scalableOverlayLocation,
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OpenSeadragon.OverlayPlacement.BOTTOM_RIGHT );
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viewer.updateOverlay( "fixed-overlay", fixedOverlayLocation,
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OpenSeadragon.OverlayPlacement.BOTTOM_RIGHT );
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setTimeout( function() {
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checkScalableOverlayPosition( "with BOTTOM_RIGHT placement." );
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checkFixedOverlayPosition( new OpenSeadragon.Point( -70, -60 ),
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"with BOTTOM_RIGHT placement." );
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start();
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}, 100 );
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}, 100 );
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} );
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} );
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asyncTest( 'Overlays placement and resizing check', function() {
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var fixedOverlayLocation = new OpenSeadragon.Point( 0.5, 0.6 );
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viewer = OpenSeadragon( {
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id: 'example-overlays',
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prefixUrl: '/build/openseadragon/images/',
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tileSources: '/test/data/testpattern.dzi',
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springStiffness: 100, // Faster animation = faster tests
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overlays: [ {
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x: fixedOverlayLocation.x,
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y: fixedOverlayLocation.y,
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id: "fixed-overlay",
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placement: "CENTER",
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checkResize: true
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} ]
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} );
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function checkFixedOverlayPosition( expectedOffset, contextMessage ) {
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var viewport = viewer.viewport;
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var expPosition = viewport.viewportToViewerElementCoordinates(
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new OpenSeadragon.Point( 0.5, 0.6 ) )
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.apply( Math.floor )
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.plus( expectedOffset );
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var actPosition = $( "#fixed-overlay" ).position();
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equal( actPosition.left, expPosition.x, "Fixed overlay X position mismatch " + contextMessage );
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equal( actPosition.top, expPosition.y, "Fixed overlay Y position mismatch " + contextMessage );
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}
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waitForViewer( function() {
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checkFixedOverlayPosition( new OpenSeadragon.Point( -35, -30 ),
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"with overlay of size 70,60." );
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$( "#fixed-overlay" ).width( 50 );
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$( "#fixed-overlay" ).height( 40 );
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// The resizing of the overlays is not detected by the viewer's loop.
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viewer.forceRedraw();
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setTimeout( function() {
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checkFixedOverlayPosition( new OpenSeadragon.Point( -25, -20 ),
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"with overlay of size 50,40." );
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// Restore original size
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$( "#fixed-overlay" ).width( 70 );
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$( "#fixed-overlay" ).height( 60 );
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start();
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}, 100 );
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} );
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} );
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asyncTest( 'Overlays placement and no resizing check', function() {
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var fixedOverlayLocation = new OpenSeadragon.Point( 0.5, 0.6 );
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viewer = OpenSeadragon( {
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id: 'example-overlays',
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prefixUrl: '/build/openseadragon/images/',
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tileSources: '/test/data/testpattern.dzi',
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springStiffness: 100, // Faster animation = faster tests
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overlays: [ {
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x: fixedOverlayLocation.x,
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y: fixedOverlayLocation.y,
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id: "fixed-overlay",
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placement: "CENTER",
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checkResize: false
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} ]
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} );
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function checkFixedOverlayPosition( expectedOffset, contextMessage ) {
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var viewport = viewer.viewport;
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var expPosition = viewport.viewportToViewerElementCoordinates(
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new OpenSeadragon.Point( 0.5, 0.6 ) )
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.apply( Math.floor )
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.plus( expectedOffset );
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var actPosition = $( "#fixed-overlay" ).position();
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equal( actPosition.left, expPosition.x, "Fixed overlay X position mismatch " + contextMessage );
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equal( actPosition.top, expPosition.y, "Fixed overlay Y position mismatch " + contextMessage );
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}
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waitForViewer( function() {
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checkFixedOverlayPosition( new OpenSeadragon.Point( -35, -30 ),
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"with overlay of size 70,60." );
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$( "#fixed-overlay" ).width( 50 );
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$( "#fixed-overlay" ).height( 40 );
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// The resizing of the overlays is not detected by the viewer's loop.
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viewer.forceRedraw();
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setTimeout( function() {
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checkFixedOverlayPosition( new OpenSeadragon.Point( -35, -30 ),
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"with overlay of size 50,40." );
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// Restore original size
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$( "#fixed-overlay" ).width( 70 );
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$( "#fixed-overlay" ).height( 60 );
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start();
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}, 100 );
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} );
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} );
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} )( );
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