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Cleanup and docs for margins

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This commit is contained in:
Ian Gilman 2014-10-16 15:19:05 -07:00
parent 2d8652046a
commit 2a7f48ef60
4 changed files with 36 additions and 36 deletions
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2
src/drawer.js
View File

@ -298,7 +298,7 @@ $.Drawer.prototype = /** @lends OpenSeadragon.Drawer.prototype */{
clear: function() {
this.canvas.innerHTML = "";
if ( this.useCanvas ) {
var viewportSize = this.viewport.getContainerSizeWithMargins();
var viewportSize = this.viewport.getContainerSize();
if( this.canvas.width != viewportSize.x ||
this.canvas.height != viewportSize.y ) {
this.canvas.width = viewportSize.x;

4
src/openseadragon.js
View File

@ -262,6 +262,10 @@
* achieved. Setting this to 0 and wrapHorizontal ( or wrapVertical ) to
* true will provide the effect of an infinitely scrolling viewport.
*
* @property {Object} [viewportMargins={}]
* Pushes the "home" region in from the sides by the specified amounts.
* Possible subproperties (Numbers, in screen coordinates): left, top, right, bottom.
*
* @property {Number} [imageLoaderLimit=0]
* The maximum number of image requests to make concurrently. By default
* it is set to 0 allowing the browser to make the maximum number of

1
src/tiledimage.js
View File

@ -178,7 +178,6 @@ function updateViewport( tiledImage ) {
best = null,
haveDrawn = false,
currentTime = $.now(),
viewportSize = tiledImage.viewport.getContainerSize(),
viewportBounds = tiledImage.viewport.getBoundsWithMargins( true ),
viewportTL = viewportBounds.getTopLeft(),
viewportBR = viewportBounds.getBottomRight(),

65
src/viewport.js
View File

@ -96,8 +96,10 @@ $.Viewport = function( options ) {
bottom: 0
}, this.margins || {});
this.containerSize.x -= this.margins.left + this.margins.right;
this.containerSize.y -= this.margins.top + this.margins.bottom;
this.containerInnerSize = new $.Point(
Math.max(1, this.containerSize.x - (this.margins.left + this.margins.right)),
Math.max(1, this.containerSize.y - (this.margins.top + this.margins.bottom))
);
this.centerSpringX = new $.Spring({
initial: 0,
@ -267,7 +269,7 @@ $.Viewport.prototype = /** @lends OpenSeadragon.Viewport.prototype */{
getMaxZoom: function() {
var zoom = this.maxZoomLevel;
if (!zoom) {
zoom = this.contentSize.x * this.maxZoomPixelRatio / this.containerSize.x;
zoom = this.contentSize.x * this.maxZoomPixelRatio / this.containerInnerSize.x;
zoom /= this.homeBounds.width;
}
@ -278,11 +280,12 @@ $.Viewport.prototype = /** @lends OpenSeadragon.Viewport.prototype */{
* @function
*/
getAspectRatio: function() {
return this.containerSize.x / this.containerSize.y;
return this.containerInnerSize.x / this.containerInnerSize.y;
},
/**
* @function
* @returns {OpenSeadragon.Point} The size of the container, in screen coordinates.
*/
getContainerSize: function() {
return new $.Point(
@ -291,19 +294,10 @@ $.Viewport.prototype = /** @lends OpenSeadragon.Viewport.prototype */{
);
},
/**
* @function
*/
getContainerSizeWithMargins: function() {
return new $.Point(
this.containerSize.x + this.margins.left + this.margins.right,
this.containerSize.y + this.margins.top + this.margins.bottom
);
},
/**
* @function
* @param {Boolean} current - Pass true for the current location; defaults to false (target location).
* @returns {OpenSeadragon.Rect} The location you are zoomed/panned to, in world coordinates.
*/
getBounds: function( current ) {
var center = this.getCenter( current ),
@ -321,18 +315,20 @@ $.Viewport.prototype = /** @lends OpenSeadragon.Viewport.prototype */{
/**
* @function
* @param {Boolean} current - Pass true for the current location; defaults to false (target location).
* @returns {OpenSeadragon.Rect} The location you are zoomed/panned to,
* including the space taken by margins, in world coordinates.
*/
getBoundsWithMargins: function( current ) {
var bounds = this.getBounds(current);
var factor = this.containerSize.x * this.getZoom(current);
var factor = this.containerInnerSize.x * this.getZoom(current);
// var fullSize = this.getContainerSizeWithMargins();
bounds.x -= this.margins.left / factor;
bounds.y -= this.margins.top / factor;
bounds.width += (this.margins.left + this.margins.right) / factor;
bounds.height += (this.margins.top + this.margins.bottom) / factor;
// $.console.log(this.margins.top / (this.containerSize.x * this.getZoom(current)), bounds.height - (bounds.height * (fullSize.y / this.containerSize.y)));
// bounds.width *= fullSize.x / this.containerSize.x;
// bounds.height *= fullSize.y / this.containerSize.y;
// $.console.log(this.margins.top / (this.containerInnerSize.x * this.getZoom(current)), bounds.height - (bounds.height * (fullSize.y / this.containerInnerSize.y)));
// bounds.width *= fullSize.x / this.containerInnerSize.x;
// bounds.height *= fullSize.y / this.containerInnerSize.y;
return bounds;
},
@ -341,7 +337,7 @@ $.Viewport.prototype = /** @lends OpenSeadragon.Viewport.prototype */{
* @param {Boolean} current - Pass true for the current location; defaults to false (target location).
*/
getCenter: function( current ) {
var factor = this.containerSize.x * this.getZoom(current) * 2;
var factor = this.containerInnerSize.x * this.getZoom(current) * 2;
var centerCurrent = new $.Point(
this.centerSpringX.current.value - (this.margins.left / factor),
this.centerSpringY.current.value - (this.margins.top / factor)
@ -380,10 +376,10 @@ $.Viewport.prototype = /** @lends OpenSeadragon.Viewport.prototype */{
newZoomPixel = this.zoomPoint.minus(
bounds.getTopLeft()
).times(
this.containerSize.x / bounds.width
this.containerInnerSize.x / bounds.width
);
deltaZoomPixels = newZoomPixel.minus( oldZoomPixel );
deltaZoomPoints = deltaZoomPixels.divide( this.containerSize.x * zoom );
deltaZoomPoints = deltaZoomPixels.divide( this.containerInnerSize.x * zoom );
return centerTarget.plus( deltaZoomPoints );
},
@ -589,14 +585,14 @@ $.Viewport.prototype = /** @lends OpenSeadragon.Viewport.prototype */{
}
referencePoint = oldBounds.getTopLeft().times(
this.containerSize.x / oldBounds.width
this.containerInnerSize.x / oldBounds.width
).minus(
newBounds.getTopLeft().times(
this.containerSize.x / newBounds.width
this.containerInnerSize.x / newBounds.width
)
).divide(
this.containerSize.x / oldBounds.width -
this.containerSize.x / newBounds.width
this.containerInnerSize.x / oldBounds.width -
this.containerInnerSize.x / newBounds.width
);
return this.zoomTo( newZoom, referencePoint, immediately );
@ -839,12 +835,13 @@ $.Viewport.prototype = /** @lends OpenSeadragon.Viewport.prototype */{
newBounds = oldBounds,
widthDeltaFactor;
this.containerSize = new $.Point(
newContainerSize.x - (this.margins.left + this.margins.right),
newContainerSize.y - (this.margins.top + this.margins.bottom)
this.containerInnerSize = new $.Point(
Math.max(1, newContainerSize.x - (this.margins.left + this.margins.right)),
Math.max(1, newContainerSize.y - (this.margins.top + this.margins.bottom))
);
if ( maintain ) {
// TODO: widthDeltaFactor will always be 1; probably not what's intended
widthDeltaFactor = newContainerSize.x / this.containerSize.x;
newBounds.width = oldBounds.width * widthDeltaFactor;
newBounds.height = newBounds.width / this.getAspectRatio();
@ -916,7 +913,7 @@ $.Viewport.prototype = /** @lends OpenSeadragon.Viewport.prototype */{
*/
deltaPixelsFromPoints: function( deltaPoints, current ) {
return deltaPoints.times(
this.containerSize.x * this.getZoom( current )
this.containerInnerSize.x * this.getZoom( current )
);
},
@ -927,7 +924,7 @@ $.Viewport.prototype = /** @lends OpenSeadragon.Viewport.prototype */{
*/
deltaPointsFromPixels: function( deltaPixels, current ) {
return deltaPixels.divide(
this.containerSize.x * this.getZoom( current )
this.containerInnerSize.x * this.getZoom( current )
);
},
@ -941,7 +938,7 @@ $.Viewport.prototype = /** @lends OpenSeadragon.Viewport.prototype */{
return point.minus(
bounds.getTopLeft()
).times(
this.containerSize.x / bounds.width
this.containerInnerSize.x / bounds.width
);
},
@ -953,7 +950,7 @@ $.Viewport.prototype = /** @lends OpenSeadragon.Viewport.prototype */{
pointFromPixel: function( pixel, current ) {
var bounds = this.getBounds( current );
return pixel.divide(
this.containerSize.x / bounds.width
this.containerInnerSize.x / bounds.width
).plus(
bounds.getTopLeft()
);
@ -1168,7 +1165,7 @@ $.Viewport.prototype = /** @lends OpenSeadragon.Viewport.prototype */{
*/
viewportToImageZoom: function( viewportZoom ) {
var imageWidth = this.viewer.source.dimensions.x;
var containerWidth = this.getContainerSize().x;
var containerWidth = this.containerInnerSize.x;
var viewportToImageZoomRatio = containerWidth / imageWidth;
return viewportZoom * viewportToImageZoomRatio;
},
@ -1186,7 +1183,7 @@ $.Viewport.prototype = /** @lends OpenSeadragon.Viewport.prototype */{
*/
imageToViewportZoom: function( imageZoom ) {
var imageWidth = this.viewer.source.dimensions.x;
var containerWidth = this.getContainerSize().x;
var containerWidth = this.containerInnerSize.x;
var viewportToImageZoomRatio = imageWidth / containerWidth;
return imageZoom * viewportToImageZoomRatio;
}