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Merge pull request #331 from avandecreme/overlays

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Overlays redesign
This commit is contained in:
iangilman 2014-03-19 09:10:26 -07:00
commit e25cdd85f9
10 changed files with 738 additions and 341 deletions
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241
src/drawer.js
View File

@ -87,8 +87,7 @@ $.Drawer = function( options ) {
//internal state / configurable settings
overlays: [], // An unordered list of Overlays added.
collectionOverlays: {},
collectionOverlays: {}, // For collection mode. Here an overlay is actually a viewer.
//configurable settings
maxImageCacheCount: $.DEFAULT_SETTINGS.maxImageCacheCount,
@ -148,18 +147,6 @@ $.Drawer = function( options ) {
this.container.style.textAlign = "left";
this.container.appendChild( this.canvas );
//create the correct type of overlay by convention if the overlays
//are not already OpenSeadragon.Overlays
for( i = 0; i < this.overlays.length; i++ ){
if( $.isPlainObject( this.overlays[ i ] ) ){
this.overlays[ i ] = addOverlayFromConfiguration( this, this.overlays[ i ]);
} else if ( $.isFunction( this.overlays[ i ] ) ){
//TODO
}
}
//this.profiler = new $.Profiler();
};
@ -177,57 +164,15 @@ $.Drawer.prototype = /** @lends OpenSeadragon.Drawer.prototype */{
* @param {OpenSeadragon.OverlayPlacement} placement - The position of the
* viewport which the location coordinates will be treated as relative
* to.
* @param {function} onDraw - If supplied the callback is called when the overlay
* @param {function} onDraw - If supplied the callback is called when the overlay
* needs to be drawn. It it the responsibility of the callback to do any drawing/positioning.
* It is passed position, size and element.
* @fires OpenSeadragon.Viewer.event:add-overlay
* @deprecated - use {@link OpenSeadragon.Viewer#addOverlay} instead.
*/
addOverlay: function( element, location, placement, onDraw ) {
var options;
if( $.isPlainObject( element ) ){
options = element;
} else {
options = {
element: element,
location: location,
placement: placement,
onDraw: onDraw
};
}
element = $.getElement(options.element);
if ( getOverlayIndex( this.overlays, element ) >= 0 ) {
// they're trying to add a duplicate overlay
return;
}
this.overlays.push( new $.Overlay({
element: element,
location: options.location,
placement: options.placement,
onDraw: options.onDraw
}) );
this.updateAgain = true;
if( this.viewer ){
/**
* Raised when an overlay is added to the viewer (see {@link OpenSeadragon.Drawer#addOverlay}).
*
* @event add-overlay
* @memberof OpenSeadragon.Viewer
* @type {object}
* @property {OpenSeadragon.Viewer} eventSource - A reference to the Viewer which raised the event.
* @property {Element} element - The overlay element.
* @property {OpenSeadragon.Point|OpenSeadragon.Rect} location
* @property {OpenSeadragon.OverlayPlacement} placement
* @property {?Object} userData - Arbitrary subscriber-defined object.
*/
this.viewer.raiseEvent( 'add-overlay', {
element: element,
location: options.location,
placement: options.placement
});
}
$.console.error("drawer.addOverlay is deprecated. Use viewer.addOverlay instead.");
this.viewer.addOverlay( element, location, placement, onDraw );
return this;
},
@ -242,36 +187,11 @@ $.Drawer.prototype = /** @lends OpenSeadragon.Drawer.prototype */{
* to.
* @return {OpenSeadragon.Drawer} Chainable.
* @fires OpenSeadragon.Viewer.event:update-overlay
* @deprecated - use {@link OpenSeadragon.Viewer#updateOverlay} instead.
*/
updateOverlay: function( element, location, placement ) {
var i;
element = $.getElement( element );
i = getOverlayIndex( this.overlays, element );
if ( i >= 0 ) {
this.overlays[ i ].update( location, placement );
this.updateAgain = true;
}
if( this.viewer ){
/**
* Raised when an overlay's location or placement changes (see {@link OpenSeadragon.Drawer#updateOverlay}).
*
* @event update-overlay
* @memberof OpenSeadragon.Viewer
* @type {object}
* @property {OpenSeadragon.Viewer} eventSource - A reference to the Viewer which raised the event.
* @property {Element} element
* @property {OpenSeadragon.Point|OpenSeadragon.Rect} location
* @property {OpenSeadragon.OverlayPlacement} placement
* @property {?Object} userData - Arbitrary subscriber-defined object.
*/
this.viewer.raiseEvent( 'update-overlay', {
element: element,
location: location,
placement: placement
});
}
$.console.error("drawer.updateOverlay is deprecated. Use viewer.updateOverlay instead.");
this.viewer.updateOverlay( element, location, placement );
return this;
},
@ -283,33 +203,11 @@ $.Drawer.prototype = /** @lends OpenSeadragon.Drawer.prototype */{
* element id which represent the ovelay content to be removed.
* @return {OpenSeadragon.Drawer} Chainable.
* @fires OpenSeadragon.Viewer.event:remove-overlay
* @deprecated - use {@link OpenSeadragon.Viewer#removeOverlay} instead.
*/
removeOverlay: function( element ) {
var i;
element = $.getElement( element );
i = getOverlayIndex( this.overlays, element );
if ( i >= 0 ) {
this.overlays[ i ].destroy();
this.overlays.splice( i, 1 );
this.updateAgain = true;
}
if( this.viewer ){
/**
* Raised when an overlay is removed from the viewer (see {@link OpenSeadragon.Drawer#removeOverlay}).
*
* @event remove-overlay
* @memberof OpenSeadragon.Viewer
* @type {object}
* @property {OpenSeadragon.Viewer} eventSource - A reference to the Viewer which raised the event.
* @property {Element} element - The overlay element.
* @property {?Object} userData - Arbitrary subscriber-defined object.
*/
this.viewer.raiseEvent( 'remove-overlay', {
element: element
});
}
$.console.error("drawer.removeOverlay is deprecated. Use viewer.removeOverlay instead.");
this.viewer.updateOverlay( element );
return this;
},
@ -319,28 +217,14 @@ $.Drawer.prototype = /** @lends OpenSeadragon.Drawer.prototype */{
* @method
* @return {OpenSeadragon.Drawer} Chainable.
* @fires OpenSeadragon.Viewer.event:clear-overlay
* @deprecated - use {@link OpenSeadragon.Viewer#clearOverlays} instead.
*/
clearOverlays: function() {
while ( this.overlays.length > 0 ) {
this.overlays.pop().destroy();
this.updateAgain = true;
}
if( this.viewer ){
/**
* Raised when all overlays are removed from the viewer (see {@link OpenSeadragon.Drawer#clearOverlays}).
*
* @event clear-overlay
* @memberof OpenSeadragon.Viewer
* @type {object}
* @property {OpenSeadragon.Viewer} eventSource - A reference to the Viewer which raised the event.
* @property {?Object} userData - Arbitrary subscriber-defined object.
*/
this.viewer.raiseEvent( 'clear-overlay', {} );
}
$.console.error("drawer.clearOverlays is deprecated. Use viewer.clearOverlays instead.");
this.viewer.clearOverlays();
return this;
},
/**
* Returns whether the Drawer is scheduled for an update at the
* soonest possible opportunity.
@ -467,61 +351,6 @@ $.Drawer.prototype = /** @lends OpenSeadragon.Drawer.prototype */{
}
};
/**
* @private
* @inner
*/
function addOverlayFromConfiguration( drawer, overlay ){
var element = null,
rect = ( overlay.height && overlay.width ) ? new $.Rect(
overlay.x || overlay.px,
overlay.y || overlay.py,
overlay.width,
overlay.height
) : new $.Point(
overlay.x || overlay.px,
overlay.y || overlay.py
),
id = overlay.id ?
overlay.id :
"openseadragon-overlay-"+Math.floor(Math.random()*10000000);
element = $.getElement(overlay.id);
if( !element ){
element = document.createElement("a");
element.href = "#/overlay/"+id;
}
element.id = id;
$.addClass( element, overlay.className ?
overlay.className :
"openseadragon-overlay"
);
if(overlay.px !== undefined){
//if they specified 'px' so it's in pixel coordinates so
//we need to translate to viewport coordinates
rect = drawer.viewport.imageToViewportRectangle( rect );
}
if( overlay.placement ){
return new $.Overlay({
element: element,
location: drawer.viewport.pointFromPixel(rect),
placement: $.OverlayPlacement[overlay.placement.toUpperCase()],
onDraw: overlay.onDraw
});
}else{
return new $.Overlay({
element: element,
location: rect,
onDraw: overlay.onDraw
});
}
}
/**
* @private
* @inner
@ -695,7 +524,6 @@ function updateViewport( drawer ) {
//TODO
drawTiles( drawer, drawer.lastDrawn );
drawOverlays( drawer.viewport, drawer.overlays, drawer.container );
//TODO
if ( best ) {
@ -1142,23 +970,6 @@ function resetCoverage( coverage, level ) {
coverage[ level ] = {};
}
/**
* @private
* @inner
* Determines the 'z-index' of the given overlay. Overlays are ordered in
* a z-index based on the order they are added to the Drawer.
*/
function getOverlayIndex( overlays, element ) {
var i;
for ( i = overlays.length - 1; i >= 0; i-- ) {
if ( overlays[ i ].element == element ) {
return i;
}
}
return -1;
}
/**
* @private
* @inner
@ -1196,28 +1007,6 @@ function finishLoadingImage( image, callback, successful, jobid ){
}
function drawOverlays( viewport, overlays, container ){
var i,
length = overlays.length;
for ( i = 0; i < length; i++ ) {
drawOverlay( viewport, overlays[ i ], container );
}
}
function drawOverlay( viewport, overlay, container ){
overlay.position = viewport.pixelFromPoint(
overlay.bounds.getTopLeft(),
true
);
overlay.size = viewport.deltaPixelsFromPoints(
overlay.bounds.getSize(),
true
);
overlay.drawHTML( container, viewport );
}
function drawTiles( drawer, lastDrawn ){
var i,
tile,
@ -1297,7 +1086,7 @@ function drawTiles( drawer, lastDrawn ){
')';
}
drawer.addOverlay(
drawer.viewer.addOverlay(
viewer.element,
tile.bounds
);

22
src/openseadragon.js
View File

@ -136,6 +136,28 @@
* is an Array of objects, it is used to create a
* {@link OpenSeadragon.LegacyTileSource}.
*
* @property {Array} overlays Array of objects defining permanent overlays of
* the viewer. The overlays added via this option and later removed with
* {@link OpenSeadragon.Viewer#removeOverlay} will be added back when a new
* image is opened.
* To add overlays which can be definitively removed, one must use
* {@link OpenSeadragon.Viewer#addOverlay}
* If displaying a sequence of images, the overlays can be associated
* with a specific page by passing the overlays array to the page's
* tile source configuration.
* Expected properties:
* * x, y, (or px, py for pixel coordinates) to define the location.
* * width, height in point if using x,y or in pixels if using px,py. If width
* and height are specified, the overlay size is adjusted when zooming,
* otherwise the size stays the size of the content (or the size defined by CSS).
* * className to associate a class to the overlay
* * id to set the overlay element. If an element with this id already exists,
* it is reused, otherwise it is created. If not specified, a new element is
* created.
* * placement a string to define the relative position to the viewport.
* Only used if no width and height are specified. Default: 'TOP_LEFT'.
* See {@link OpenSeadragon.OverlayPlacement} for possible values.
*
* @property {String} [xmlPath=null]
* <strong>DEPRECATED</strong>. A relative path to load a DZI file from the server.
* Prefer the newer Options.tileSources.

35
src/overlay.js
View File

@ -35,7 +35,8 @@
(function( $ ){
/**
* An enumeration of positions that an overlay may be assigned relative to the viewport.
* An enumeration of positions that an overlay may be assigned relative to
* the viewport.
* @member OverlayPlacement
* @memberof OpenSeadragon
* @static
@ -69,8 +70,14 @@
* @memberof OpenSeadragon
* @param {Object} options
* @param {Element} options.element
* @param {OpenSeadragon.Point|OpenSeadragon.Rect} options.location
* @param {OpenSeadragon.OverlayPlacement} options.placement - Only used if location is an {@link OpenSeadragon.Point}.
* @param {OpenSeadragon.Point|OpenSeadragon.Rect} options.location - The
* location of the overlay on the image. If a {@link OpenSeadragon.Point}
* is specified, the overlay will keep a constant size independently of the
* zoom. If a {@link OpenSeadragon.Rect} is specified, the overlay size will
* be adjusted when the zoom changes.
* @param {OpenSeadragon.OverlayPlacement} [options.placement=OpenSeadragon.OverlayPlacement.TOP_LEFT]
* Relative position to the viewport.
* Only used if location is a {@link OpenSeadragon.Point}.
* @param {OpenSeadragon.Overlay.OnDrawCallback} options.onDraw
*/
$.Overlay = function( element, location, placement ) {
@ -86,9 +93,9 @@
*/
var options;
if( $.isPlainObject( element ) ){
if ( $.isPlainObject( element ) ) {
options = element;
} else{
} else {
options = {
element: element,
location: location,
@ -174,7 +181,7 @@
element.parentNode.removeChild( element );
//this should allow us to preserve overlays when required between
//pages
if( element.prevElementParent ){
if ( element.prevElementParent ) {
style.display = 'none';
//element.prevElementParent.insertBefore(
// element,
@ -209,9 +216,15 @@
viewport.viewer.drawer.canvas.width / 2,
viewport.viewer.drawer.canvas.height / 2
),
degrees = viewport.degrees,
position,
size,
degrees = viewport.degrees,
position = viewport.pixelFromPoint(
this.bounds.getTopLeft(),
true
),
size = viewport.deltaPixelsFromPoints(
this.bounds.getSize(),
true
),
overlayCenter;
if ( element.parentNode != container ) {
@ -225,8 +238,8 @@
this.size = $.getElementSize( element );
}
position = this.position;
size = this.size;
this.position = position;
this.size = size;
this.adjust( position, size );

56
src/point.js
View File

@ -76,10 +76,10 @@ $.Point.prototype = /** @lends OpenSeadragon.Point.prototype */{
},
/**
* Add another Point to this point and return a new Point.
* Substract another Point to this point and return a new Point.
* @function
* @param {OpenSeadragon.Point} point The point to add vector components.
* @returns {OpenSeadragon.Point} A new point representing the sum of the
* @param {OpenSeadragon.Point} point The point to substract vector components.
* @returns {OpenSeadragon.Point} A new point representing the substraction of the
* vector components
*/
minus: function( point ) {
@ -90,11 +90,11 @@ $.Point.prototype = /** @lends OpenSeadragon.Point.prototype */{
},
/**
* Add another Point to this point and return a new Point.
* Multiply this point by a factor and return a new Point.
* @function
* @param {OpenSeadragon.Point} point The point to add vector components.
* @returns {OpenSeadragon.Point} A new point representing the sum of the
* vector components
* @param {Number} factor The factor to multiply vector components.
* @returns {OpenSeadragon.Point} A new point representing the multiplication
* of the vector components by the factor
*/
times: function( factor ) {
return new $.Point(
@ -104,11 +104,11 @@ $.Point.prototype = /** @lends OpenSeadragon.Point.prototype */{
},
/**
* Add another Point to this point and return a new Point.
* Divide this point by a factor and return a new Point.
* @function
* @param {OpenSeadragon.Point} point The point to add vector components.
* @returns {OpenSeadragon.Point} A new point representing the sum of the
* vector components
* @param {Number} factor The factor to divide vector components.
* @returns {OpenSeadragon.Point} A new point representing the division of the
* vector components by the factor
*/
divide: function( factor ) {
return new $.Point(
@ -118,10 +118,9 @@ $.Point.prototype = /** @lends OpenSeadragon.Point.prototype */{
},
/**
* Add another Point to this point and return a new Point.
* Compute the opposite of this point and return a new Point.
* @function
* @param {OpenSeadragon.Point} point The point to add vector components.
* @returns {OpenSeadragon.Point} A new point representing the sum of the
* @returns {OpenSeadragon.Point} A new point representing the opposite of the
* vector components
*/
negate: function() {
@ -129,11 +128,10 @@ $.Point.prototype = /** @lends OpenSeadragon.Point.prototype */{
},
/**
* Add another Point to this point and return a new Point.
* Compute the distance between this point and another point.
* @function
* @param {OpenSeadragon.Point} point The point to add vector components.
* @returns {OpenSeadragon.Point} A new point representing the sum of the
* vector components
* @param {OpenSeadragon.Point} point The point to compute the distance with.
* @returns {Number} The distance between the 2 points
*/
distanceTo: function( point ) {
return Math.sqrt(
@ -143,22 +141,21 @@ $.Point.prototype = /** @lends OpenSeadragon.Point.prototype */{
},
/**
* Add another Point to this point and return a new Point.
* Apply a function to each coordinate of this point and return a new point.
* @function
* @param {OpenSeadragon.Point} point The point to add vector components.
* @returns {OpenSeadragon.Point} A new point representing the sum of the
* vector components
* @param {function} func The function to apply to each coordinate.
* @returns {OpenSeadragon.Point} A new point with the coordinates computed
* by the specified function
*/
apply: function( func ) {
return new $.Point( func( this.x ), func( this.y ) );
},
/**
* Add another Point to this point and return a new Point.
* Check if this point is equal to another one.
* @function
* @param {OpenSeadragon.Point} point The point to add vector components.
* @returns {OpenSeadragon.Point} A new point representing the sum of the
* vector components
* @param {OpenSeadragon.Point} point The point to compare this point with.
* @returns {Boolean} true if they are equal, false otherwise.
*/
equals: function( point ) {
return (
@ -186,11 +183,10 @@ $.Point.prototype = /** @lends OpenSeadragon.Point.prototype */{
},
/**
* Add another Point to this point and return a new Point.
* Convert this point to a string in the format (x,y) where x and y are
* rounded to the nearest integer.
* @function
* @param {OpenSeadragon.Point} point The point to add vector components.
* @returns {OpenSeadragon.Point} A new point representing the sum of the
* vector components
* @returns {String} A string representation of this point.
*/
toString: function() {
return "(" + Math.round(this.x) + "," + Math.round(this.y) + ")";

316
src/viewer.js
View File

@ -74,8 +74,7 @@ $.Viewer = function( options ) {
xmlPath: args.length > 1 ? args[ 1 ] : undefined,
prefixUrl: args.length > 2 ? args[ 2 ] : undefined,
controls: args.length > 3 ? args[ 3 ] : undefined,
overlays: args.length > 4 ? args[ 4 ] : undefined,
overlayControls: args.length > 5 ? args[ 5 ] : undefined
overlays: args.length > 4 ? args[ 4 ] : undefined
};
}
@ -127,9 +126,8 @@ $.Viewer = function( options ) {
*/
canvas: null,
//TODO: not sure how to best describe these
overlays: [],
overlayControls:[],
// Overlays list. An overlay allows to add html on top of the viewer.
overlays: [],
//private state properties
previousBody: [],
@ -211,6 +209,7 @@ $.Viewer = function( options ) {
};
this._updateRequestId = null;
this.currentOverlays = [];
//Inherit some behaviors and properties
$.EventSource.call( this );
@ -572,9 +571,7 @@ $.extend( $.Viewer.prototype, $.EventSource.prototype, $.ControlDock.prototype,
this.navigator.close();
}
if ( this.drawer ) {
this.drawer.clearOverlays();
}
this.clearOverlays();
this.source = null;
this.drawer = null;
@ -1334,6 +1331,173 @@ $.extend( $.Viewer.prototype, $.EventSource.prototype, $.ControlDock.prototype,
return this;
},
/**
* Adds an html element as an overlay to the current viewport. Useful for
* highlighting words or areas of interest on an image or other zoomable
* interface. The overlays added via this method are removed when the viewport
* is closed which include when changing page.
* @method
* @param {Element|String|Object} element - A reference to an element or an id for
* the element which will overlayed. Or an Object specifying the configuration for the overlay
* @param {OpenSeadragon.Point|OpenSeadragon.Rect} location - The point or
* rectangle which will be overlayed.
* @param {OpenSeadragon.OverlayPlacement} placement - The position of the
* viewport which the location coordinates will be treated as relative
* to.
* @param {function} onDraw - If supplied the callback is called when the overlay
* needs to be drawn. It it the responsibility of the callback to do any drawing/positioning.
* It is passed position, size and element.
* @return {OpenSeadragon.Viewer} Chainable.
* @fires OpenSeadragon.Viewer.event:add-overlay
*/
addOverlay: function( element, location, placement, onDraw ) {
var options;
if( $.isPlainObject( element ) ){
options = element;
} else {
options = {
element: element,
location: location,
placement: placement,
onDraw: onDraw
};
}
element = $.getElement( options.element );
if ( getOverlayIndex( this.currentOverlays, element ) >= 0 ) {
// they're trying to add a duplicate overlay
return this;
}
this.currentOverlays.push( getOverlayObject( this, options ) );
THIS[ this.hash ].forceRedraw = true;
/**
* Raised when an overlay is added to the viewer (see {@link OpenSeadragon.Viewer#addOverlay}).
*
* @event add-overlay
* @memberof OpenSeadragon.Viewer
* @type {object}
* @property {OpenSeadragon.Viewer} eventSource - A reference to the Viewer which raised the event.
* @property {Element} element - The overlay element.
* @property {OpenSeadragon.Point|OpenSeadragon.Rect} location
* @property {OpenSeadragon.OverlayPlacement} placement
* @property {?Object} userData - Arbitrary subscriber-defined object.
*/
this.raiseEvent( 'add-overlay', {
element: element,
location: options.location,
placement: options.placement
});
return this;
},
/**
* Updates the overlay represented by the reference to the element or
* element id moving it to the new location, relative to the new placement.
* @method
* @param {OpenSeadragon.Point|OpenSeadragon.Rect} location - The point or
* rectangle which will be overlayed.
* @param {OpenSeadragon.OverlayPlacement} placement - The position of the
* viewport which the location coordinates will be treated as relative
* to.
* @return {OpenSeadragon.Viewer} Chainable.
* @fires OpenSeadragon.Viewer.event:update-overlay
*/
updateOverlay: function( element, location, placement ) {
var i;
element = $.getElement( element );
i = getOverlayIndex( this.currentOverlays, element );
if ( i >= 0 ) {
this.currentOverlays[ i ].update( location, placement );
THIS[ this.hash ].forceRedraw = true;
/**
* Raised when an overlay's location or placement changes
* (see {@link OpenSeadragon.Viewer#updateOverlay}).
*
* @event update-overlay
* @memberof OpenSeadragon.Viewer
* @type {object}
* @property {OpenSeadragon.Viewer} eventSource - A reference to the
* Viewer which raised the event.
* @property {Element} element
* @property {OpenSeadragon.Point|OpenSeadragon.Rect} location
* @property {OpenSeadragon.OverlayPlacement} placement
* @property {?Object} userData - Arbitrary subscriber-defined object.
*/
this.raiseEvent( 'update-overlay', {
element: element,
location: location,
placement: placement
});
}
return this;
},
/**
* Removes an overlay identified by the reference element or element id
* and schedules an update.
* @method
* @param {Element|String} element - A reference to the element or an
* element id which represent the ovelay content to be removed.
* @return {OpenSeadragon.Viewer} Chainable.
* @fires OpenSeadragon.Viewer.event:remove-overlay
*/
removeOverlay: function( element ) {
var i;
element = $.getElement( element );
i = getOverlayIndex( this.currentOverlays, element );
if ( i >= 0 ) {
this.currentOverlays[ i ].destroy();
this.currentOverlays.splice( i, 1 );
THIS[ this.hash ].forceRedraw = true;
/**
* Raised when an overlay is removed from the viewer
* (see {@link OpenSeadragon.Viewer#removeOverlay}).
*
* @event remove-overlay
* @memberof OpenSeadragon.Viewer
* @type {object}
* @property {OpenSeadragon.Viewer} eventSource - A reference to the
* Viewer which raised the event.
* @property {Element} element - The overlay element.
* @property {?Object} userData - Arbitrary subscriber-defined object.
*/
this.raiseEvent( 'remove-overlay', {
element: element
});
}
return this;
},
/**
* Removes all currently configured Overlays from this Viewer and schedules
* an update.
* @method
* @return {OpenSeadragon.Viewer} Chainable.
* @fires OpenSeadragon.Viewer.event:clear-overlay
*/
clearOverlays: function() {
while ( this.currentOverlays.length > 0 ) {
this.currentOverlays.pop().destroy();
}
THIS[ this.hash ].forceRedraw = true;
/**
* Raised when all overlays are removed from the viewer (see {@link OpenSeadragon.Drawer#clearOverlays}).
*
* @event clear-overlay
* @memberof OpenSeadragon.Viewer
* @type {object}
* @property {OpenSeadragon.Viewer} eventSource - A reference to the Viewer which raised the event.
* @property {?Object} userData - Arbitrary subscriber-defined object.
*/
this.raiseEvent( 'clear-overlay', {} );
return this;
},
/**
* Updates the sequence buttons.
* @function OpenSeadragon.Viewer.prototype._updateSequenceButtons
@ -1419,9 +1583,8 @@ function _getSafeElemSize (oElement) {
* @private
*/
function openTileSource( viewer, source ) {
var _this = viewer,
overlay,
i;
var i,
_this = viewer;
if ( _this.source ) {
_this.close( );
@ -1455,7 +1618,7 @@ function openTileSource( viewer, source ) {
//minZoomLevel: this.minZoomLevel,
//maxZoomLevel: this.maxZoomLevel
});
}else{
} else {
if( source ){
_this.source = source;
}
@ -1488,7 +1651,6 @@ function openTileSource( viewer, source ) {
source: _this.source,
viewport: _this.viewport,
element: _this.canvas,
overlays: [].concat( _this.overlays ).concat( _this.source.overlays ),
maxImageCacheCount: _this.maxImageCacheCount,
imageLoaderLimit: _this.imageLoaderLimit,
minZoomImageRatio: _this.minZoomImageRatio,
@ -1538,7 +1700,6 @@ function openTileSource( viewer, source ) {
tileSources: source,
tileHost: _this.tileHost,
prefixUrl: _this.prefixUrl,
overlays: _this.overlays,
viewer: _this
});
}
@ -1556,7 +1717,6 @@ function openTileSource( viewer, source ) {
tileSources: _this.tileSources,
tileHost: _this.tileHost,
prefixUrl: _this.prefixUrl,
overlays: _this.overlays,
viewer: _this
});
}
@ -1567,40 +1727,10 @@ function openTileSource( viewer, source ) {
THIS[ _this.hash ].forceRedraw = true;
_this._updateRequestId = scheduleUpdate( _this, updateMulti );
//Assuming you had programatically created a bunch of overlays
//and added them via configuration
for ( i = 0; i < _this.overlayControls.length; i++ ) {
overlay = _this.overlayControls[ i ];
if ( overlay.point ) {
_this.drawer.addOverlay(
overlay.id,
new $.Point(
overlay.point.X,
overlay.point.Y
),
$.OverlayPlacement.TOP_LEFT
);
} else {
_this.drawer.addOverlay(
overlay.id,
new $.Rect(
overlay.rect.Point.X,
overlay.rect.Point.Y,
overlay.rect.Width,
overlay.rect.Height
),
overlay.placement
);
}
}
VIEWERS[ _this.hash ] = _this;
loadOverlays( _this );
/**
* Raised when the viewer has opened and loaded one or more TileSources.
*
@ -1616,8 +1746,98 @@ function openTileSource( viewer, source ) {
return _this;
}
function loadOverlays( _this ) {
_this.currentOverlays = [];
for ( var i = 0; i < _this.overlays.length; i++ ) {
_this.currentOverlays[ i ] = getOverlayObject( _this, _this.overlays[ i ] );
}
for ( var j = 0; j < _this.source.overlays.length; j++ ) {
_this.currentOverlays[ i + j ] =
getOverlayObject( _this, _this.source.overlays[ j ] );
}
}
function getOverlayObject( viewer, overlay ) {
if ( overlay instanceof $.Overlay ) {
return overlay;
}
var element = null;
if ( overlay.element ) {
element = $.getElement( overlay.element );
} else {
var id = overlay.id ?
overlay.id :
"openseadragon-overlay-" + Math.floor( Math.random() * 10000000 );
element = $.getElement( overlay.id );
if ( !element ) {
element = document.createElement( "a" );
element.href = "#/overlay/" + id;
}
element.id = id;
$.addClass( element, overlay.className ?
overlay.className :
"openseadragon-overlay"
);
}
var location = overlay.location;
if ( !location ) {
var rect = ( overlay.height && overlay.width ) ? new $.Rect(
overlay.x || overlay.px,
overlay.y || overlay.py,
overlay.width,
overlay.height
) : new $.Point(
overlay.x || overlay.px,
overlay.y || overlay.py
);
if( overlay.px !== undefined ) {
//if they specified 'px' so it's in pixel coordinates so
//we need to translate to viewport coordinates
rect = viewer.viewport.imageToViewportRectangle( rect );
}
location = overlay.placement ? viewer.viewport.pointFromPixel( rect ) :
rect;
}
var placement = overlay.placement;
if ( placement && ( $.type( placement ) === "string" ) ) {
placement = $.OverlayPlacement[ overlay.placement.toUpperCase() ];
}
return new $.Overlay({
element: element,
location: location,
placement: placement,
onDraw: overlay.onDraw
});
}
/**
* @private
* @inner
* Determines the index of the given overlay in the given overlays array.
*/
function getOverlayIndex( overlays, element ) {
var i;
for ( i = overlays.length - 1; i >= 0; i-- ) {
if ( overlays[ i ].element === element ) {
return i;
}
}
return -1;
}
function drawOverlays( viewport, overlays, container ) {
var i,
length = overlays.length;
for ( i = 0; i < length; i++ ) {
overlays[ i ].drawHTML( container, viewport );
}
}
///////////////////////////////////////////////////////////////////////////////
// Schedulers provide the general engine for animation
@ -1991,6 +2211,7 @@ function updateOnce( viewer ) {
if ( animated ) {
viewer.drawer.update();
drawOverlays( viewer.viewport, viewer.currentOverlays, viewer.canvas );
if( viewer.navigator ){
viewer.navigator.update( viewer.viewport );
}
@ -2006,6 +2227,7 @@ function updateOnce( viewer ) {
viewer.raiseEvent( "animation" );
} else if ( THIS[ viewer.hash ].forceRedraw || viewer.drawer.needsUpdate() ) {
viewer.drawer.update();
drawOverlays( viewer.viewport, viewer.currentOverlays, viewer.canvas );
if( viewer.navigator ){
viewer.navigator.update( viewer.viewport );
}

8
src/viewport.js
View File

@ -920,12 +920,12 @@ $.Viewport.prototype = /** @lends OpenSeadragon.Viewport.prototype */{
/**
* Convert pixel coordinates relative to the image to
* viewer element coordinates.
* @param {OpenSeadragon.Point} point
* @param {OpenSeadragon.Point} pixel
* @returns {OpenSeadragon.Point}
*/
imageToViewerElementCoordinates: function( point ) {
var pixel = this.pixelFromPoint( point, true );
return this.imageToViewportCoordinates( pixel );
imageToViewerElementCoordinates: function( pixel ) {
var point = this.imageToViewportCoordinates( pixel );
return this.pixelFromPoint( point, true );
},
/**

344
test/overlays.js Normal file
View File

@ -0,0 +1,344 @@
/* global QUnit, module, Util, $, console, test, asyncTest, start, ok, equal */
( function() {
var viewer;
module( "Overlays", {
setup: function() {
var example = $( '<div id="example-overlays"></div>' ).appendTo( "#qunit-fixture" );
var fixedOverlay = $( '<div id="fixed-overlay"></div>' ).appendTo(example);
fixedOverlay.width(70);
fixedOverlay.height(60);
testLog.reset();
},
teardown: function() {
resetTestVariables();
}
} );
var resetTestVariables = function() {
if ( viewer ) {
viewer.close();
}
};
function waitForViewer( handler, count ) {
if ( typeof count !== "number" ) {
count = 0;
}
var ready = viewer.isOpen() &&
viewer.drawer !== null &&
!viewer.drawer.needsUpdate() &&
Util.equalsWithVariance( viewer.viewport.getBounds( true ).x,
viewer.viewport.getBounds().x, 0.000 ) &&
Util.equalsWithVariance( viewer.viewport.getBounds( true ).y,
viewer.viewport.getBounds().y, 0.000 ) &&
Util.equalsWithVariance( viewer.viewport.getBounds( true ).width,
viewer.viewport.getBounds().width, 0.000 );
if ( ready ) {
handler();
} else if ( count < 50 ) {
count++;
setTimeout( function() {
waitForViewer( handler, count );
}, 100 );
} else {
console.log( "waitForViewer:" + viewer.isOpen( ) + ":" + viewer.drawer +
":" + viewer.drawer.needsUpdate() );
handler();
}
}
asyncTest( 'Overlays via viewer options', function() {
viewer = OpenSeadragon( {
id: 'example-overlays',
prefixUrl: '/build/openseadragon/images/',
tileSources: [ '/test/data/testpattern.dzi', '/test/data/testpattern.dzi' ],
springStiffness: 100, // Faster animation = faster tests
overlays: [ {
x: 0.1,
y: 0.4,
width: 0.09,
height: 0.09,
id: "overlay"
} ]
} );
viewer.addHandler( 'open', openHandler );
function openHandler() {
viewer.removeHandler( 'open', openHandler );
equal( viewer.overlays.length, 1, "Global overlay should be added." );
equal( viewer.currentOverlays.length, 1, "Global overlay should be open." );
viewer.addHandler( 'open', openPageHandler );
viewer.goToPage( 1 );
}
function openPageHandler() {
viewer.removeHandler( 'open', openPageHandler );
equal( viewer.overlays.length, 1, "Global overlay should stay after page switch." );
equal( viewer.currentOverlays.length, 1, "Global overlay should re-open after page switch." );
viewer.addHandler( 'close', closeHandler );
viewer.close();
}
function closeHandler() {
viewer.removeHandler( 'close', closeHandler );
equal( viewer.overlays.length, 1, "Global overlay should not be removed on close." );
equal( viewer.currentOverlays.length, 0, "Global overlay should be closed on close." );
start();
}
} );
asyncTest( 'Page Overlays via viewer options', function() {
viewer = OpenSeadragon( {
id: 'example-overlays',
prefixUrl: '/build/openseadragon/images/',
tileSources: [ {
Image: {
xmlns: "http://schemas.microsoft.com/deepzoom/2008",
Url: "/test/data/testpattern_files/",
Format: "jpg",
Overlap: "1",
TileSize: "254",
Size: {
Width: 1000,
Height: 1000
}
},
overlays: [ {
x: 0.1,
y: 0.4,
width: 0.09,
height: 0.09,
id: "overlay"
} ]
}, {
Image: {
xmlns: "http://schemas.microsoft.com/deepzoom/2008",
Url: "/test/data/testpattern_files/",
Format: "jpg",
Overlap: "1",
TileSize: "254",
Size: {
Width: 1000,
Height: 1000
}
}
} ],
springStiffness: 100 // Faster animation = faster tests
} );
viewer.addHandler( 'open', openHandler );
function openHandler() {
viewer.removeHandler( 'open', openHandler );
equal( viewer.overlays.length, 0, "No global overlay should be added." );
equal( viewer.currentOverlays.length, 1, "Page overlay should be open." );
viewer.addHandler( 'open', openPageHandler );
viewer.goToPage( 1 );
}
function openPageHandler() {
viewer.removeHandler( 'open', openPageHandler );
equal( viewer.overlays.length, 0, "No global overlay should be added after page switch." );
equal( viewer.currentOverlays.length, 0, "No page overlay should be opened after page switch." );
viewer.addHandler( 'close', closeHandler );
viewer.close();
}
function closeHandler() {
viewer.removeHandler( 'close', closeHandler );
equal( viewer.overlays.length, 0, "No global overlay should be added on close." );
equal( viewer.currentOverlays.length, 0, "Page overlay should be closed on close." );
start();
}
} );
asyncTest( 'Overlays via addOverlay method', function() {
viewer = OpenSeadragon( {
id: 'example-overlays',
prefixUrl: '/build/openseadragon/images/',
tileSources: [ '/test/data/testpattern.dzi', '/test/data/testpattern.dzi' ],
springStiffness: 100 // Faster animation = faster tests
} );
viewer.addHandler( 'open', openHandler );
function openHandler() {
viewer.removeHandler( 'open', openHandler );
equal( viewer.overlays.length, 0, "No global overlay should be added." );
equal( viewer.currentOverlays.length, 0, "No overlay should be open." );
var rect = new OpenSeadragon.Rect( 0.1, 0.1, 0.1, 0.1 );
var overlay = $( "<div/>" ).prop("id", "overlay").get( 0 );
viewer.addOverlay( overlay, rect );
equal( viewer.overlays.length, 0, "No manual overlay should be added as global overlay." );
equal( viewer.currentOverlays.length, 1, "A manual overlay should be open." );
viewer.addHandler( 'open', openPageHandler );
viewer.goToPage( 1 );
}
function openPageHandler() {
viewer.removeHandler( 'open', openPageHandler );
equal( viewer.overlays.length, 0, "No global overlay should be added after page switch." );
equal( viewer.currentOverlays.length, 0, "Manual overlay should be removed after page switch." );
viewer.addHandler( 'close', closeHandler );
viewer.close();
}
function closeHandler() {
viewer.removeHandler( 'close', closeHandler );
equal( viewer.overlays.length, 0, "No global overlay should be added on close." );
equal( viewer.currentOverlays.length, 0, "Manual overlay should be removed on close." );
start();
}
} );
asyncTest( 'Overlays size in pixels', function() {
viewer = OpenSeadragon( {
id: 'example-overlays',
prefixUrl: '/build/openseadragon/images/',
tileSources: [ '/test/data/testpattern.dzi', '/test/data/testpattern.dzi' ],
springStiffness: 100, // Faster animation = faster tests
overlays: [ {
px: 13,
py: 120,
width: 124,
height: 132,
id: "overlay"
}, {
px: 400,
py: 500,
id: "fixed-overlay"
}]
} );
function checkOverlayPosition( contextMessage ) {
var viewport = viewer.viewport;
var expPosition = viewport.imageToViewerElementCoordinates(
new OpenSeadragon.Point( 13, 120 ) ).apply( Math.floor );
var actPosition = $( "#overlay" ).position();
equal( actPosition.left, expPosition.x, "X position mismatch " + contextMessage );
equal( actPosition.top, expPosition.y, "Y position mismatch " + contextMessage );
var zoom = viewport.viewportToImageZoom( viewport.getZoom( true ) );
var expectedWidth = Math.ceil( 124 * zoom );
var expectedHeight = Math.ceil( 132 * zoom );
equal( $( "#overlay" ).width(), expectedWidth, "Width mismatch " + contextMessage );
equal( $( "#overlay" ).height( ), expectedHeight, "Height mismatch " + contextMessage );
expPosition = viewport.imageToViewerElementCoordinates(
new OpenSeadragon.Point( 400, 500 ) ).apply( Math.floor );
actPosition = $( "#fixed-overlay" ).position();
equal( actPosition.left, expPosition.x, "Fixed overlay X position mismatch " + contextMessage );
equal( actPosition.top, expPosition.y, "Fixed overlay Y position mismatch " + contextMessage );
equal( $( "#fixed-overlay" ).width(), 70, "Fixed overlay width mismatch " + contextMessage );
equal( $( "#fixed-overlay" ).height( ), 60, "Fixed overlay height mismatch " + contextMessage );
}
waitForViewer( function() {
checkOverlayPosition( "after opening using image coordinates" );
viewer.viewport.zoomBy( 1.1 ).panBy( new OpenSeadragon.Point( 0.1, 0.2 ) );
waitForViewer( function() {
checkOverlayPosition( "after zoom and pan using image coordinates" );
viewer.viewport.goHome();
waitForViewer( function() {
checkOverlayPosition( "after goHome using image coordinates" );
start();
} );
} );
} );
} );
asyncTest( 'Overlays size in points', function() {
viewer = OpenSeadragon( {
id: 'example-overlays',
prefixUrl: '/build/openseadragon/images/',
tileSources: [ '/test/data/testpattern.dzi', '/test/data/testpattern.dzi' ],
springStiffness: 100, // Faster animation = faster tests
overlays: [ {
x: 0.2,
y: 0.1,
width: 0.5,
height: 0.1,
id: "overlay"
},{
x: 0.5,
y: 0.6,
id: "fixed-overlay"
} ]
} );
function checkOverlayPosition( contextMessage ) {
var viewport = viewer.viewport;
var expPosition = viewport.viewportToViewerElementCoordinates(
new OpenSeadragon.Point( 0.2, 0.1 ) ).apply( Math.floor );
var actPosition = $( "#overlay" ).position();
equal( actPosition.left, expPosition.x, "X position mismatch " + contextMessage );
equal( actPosition.top, expPosition.y, "Y position mismatch " + contextMessage );
var expectedSize = viewport.deltaPixelsFromPoints(
new OpenSeadragon.Point(0.5, 0.1));
equal( $( "#overlay" ).width(), expectedSize.x, "Width mismatch " + contextMessage );
equal( $( "#overlay" ).height( ), expectedSize.y, "Height mismatch " + contextMessage );
expPosition = viewport.viewportToViewerElementCoordinates(
new OpenSeadragon.Point( 0.5, 0.6 ) ).apply( Math.floor );
actPosition = $( "#fixed-overlay" ).position();
equal( actPosition.left, expPosition.x, "Fixed overlay X position mismatch " + contextMessage );
equal( actPosition.top, expPosition.y, "Fixed overlay Y position mismatch " + contextMessage );
equal( $( "#fixed-overlay" ).width(), 70, "Fixed overlay width mismatch " + contextMessage );
equal( $( "#fixed-overlay" ).height( ), 60, "Fixed overlay height mismatch " + contextMessage );
}
waitForViewer( function() {
checkOverlayPosition( "after opening using viewport coordinates" );
viewer.viewport.zoomBy( 1.1 ).panBy( new OpenSeadragon.Point( 0.1, 0.2 ) );
waitForViewer( function() {
checkOverlayPosition( "after zoom and pan using viewport coordinates" );
viewer.viewport.goHome();
waitForViewer( function() {
checkOverlayPosition( "after goHome using viewport coordinates" );
start();
} );
} );
} );
} );
} )();

2
test/test.css
View File

@ -18,7 +18,7 @@
width: 300px;
}
#unitsexample {
#unitsexample, #example-overlays {
height: 500px;
width: 500px;
}

1
test/test.html
View File

@ -27,6 +27,7 @@
<script src="/test/utils.js"></script>
<script src="/test/events.js"></script>
<script src="/test/units.js"></script>
<script src="/test/overlays.js"></script>
<script src="/test/rotate.js"></script>
</body>
</html>

54
test/units.js
View File

@ -26,12 +26,34 @@
function pointEqual(a, b, message) {
ok(a.x === b.x && a.y === b.y, message);
Util.assessNumericValue(a.x, b.x, 0.00000001, message);
Util.assessNumericValue(a.y, b.y, 0.00000001, message);
}
// ----------
asyncTest('Coordinates conversions', function() {
function checkPoint(context) {
var viewport = viewer.viewport;
var point = new OpenSeadragon.Point(15, 12);
var result = viewport.viewerElementToImageCoordinates(
viewport.imageToViewerElementCoordinates(point));
pointEqual(result, point, 'viewerElement and image ' + context);
var result = viewport.windowToImageCoordinates(
viewport.imageToWindowCoordinates(point));
pointEqual(result, point, 'window and image ' + context);
var result = viewport.viewerElementToViewportCoordinates(
viewport.viewportToViewerElementCoordinates(point));
pointEqual(result, point, 'viewerElement and viewport ' + context);
var result = viewport.windowToViewportCoordinates(
viewport.viewportToWindowCoordinates(point));
pointEqual(result, point, 'window and viewport ' + context);
}
viewer.addHandler("open", function () {
var viewport = viewer.viewport;
@ -52,24 +74,13 @@
var pixel = viewport.viewerElementToImageCoordinates(viewerTopRight);
pointEqual(pixel, imageTopRight, 'Viewer top right has viewport coordinates imageWidth,0.');
var point = new OpenSeadragon.Point(15, 12);
var result = viewport.viewerElementToImageCoordinates(
viewport.imageToViewerElementCoordinates(point));
pointEqual(result, point, 'viewerElement and image');
var result = viewport.windowToImageCoordinates(
viewport.imageToWindowCoordinates(point));
pointEqual(result, point, 'window and image');
var result = viewport.viewerElementToViewportCoordinates(
viewport.viewportToViewerElementCoordinates(point));
pointEqual(result, point, 'viewerElement and viewport');
var result = viewport.windowToViewportCoordinates(
viewport.viewportToWindowCoordinates(point));
pointEqual(result, point, 'window and viewport');
start();
checkPoint('after opening');
viewer.addHandler('animation-finish', function animationHandler() {
viewer.removeHandler('animation-finish', animationHandler);
checkPoint('after zoom and pan');
start();
});
viewer.viewport.zoomTo(0.8).panTo(new OpenSeadragon.Point(0.1, 0.2));
});
viewer.open('/test/data/testpattern.dzi');
});
@ -104,14 +115,13 @@
checkZoom();
var zoomHandler = function() {
viewer.removeHandler('animationfinish', zoomHandler);
viewer.removeHandler('animation-finish', zoomHandler);
checkZoom();
start();
};
viewer.addHandler('animationfinish', zoomHandler);
viewer.addHandler('animation-finish', zoomHandler);
viewport.zoomTo(2);
start();
});
viewer.open('/test/data/testpattern.dzi');