+++ /dev/null
-/* Copyright (c) 2006-2012 by OpenLayers Contributors (see authors.txt for
- * full list of contributors). Published under the 2-clause BSD license.
- * See license.txt in the OpenLayers distribution or repository for the
- * full text of the license. */
-
-
-/**
- * @requires OpenLayers/Control/PanZoom.js
- */
-
-/**
- * Class: OpenLayers.Control.PanZoomBar
- * The PanZoomBar is a visible control composed of a
- * <OpenLayers.Control.PanPanel> and a <OpenLayers.Control.ZoomBar>.
- * By default it is displayed in the upper left corner of the map as 4
- * directional arrows above a vertical slider.
- *
- * Inherits from:
- * - <OpenLayers.Control.PanZoom>
- */
-OpenLayers.Control.SimplePanZoom = OpenLayers.Class(OpenLayers.Control.PanZoom, {
-
- /**
- * APIProperty: zoomStopWidth
- */
- zoomStopWidth: 18,
-
- /**
- * APIProperty: zoomStopHeight
- */
- zoomStopHeight: 7,
-
- /**
- * Property: slider
- */
- slider: null,
-
- /**
- * Property: sliderEvents
- * {<OpenLayers.Events>}
- */
- sliderEvents: null,
-
- /**
- * Property: zoombarDiv
- * {DOMElement}
- */
- zoombarDiv: null,
-
- /**
- * APIProperty: zoomWorldIcon
- * {Boolean}
- */
- zoomWorldIcon: false,
-
- /**
- * APIProperty: panIcons
- * {Boolean} Set this property to false not to display the pan icons. If
- * false the zoom world icon is placed under the zoom bar. Defaults to
- * true.
- */
- panIcons: true,
-
- /**
- * APIProperty: forceFixedZoomLevel
- * {Boolean} Force a fixed zoom level even though the map has
- * fractionalZoom
- */
- forceFixedZoomLevel: false,
-
- /**
- * Property: mouseDragStart
- * {<OpenLayers.Pixel>}
- */
- mouseDragStart: null,
-
- /**
- * Property: deltaY
- * {Number} The cumulative vertical pixel offset during a zoom bar drag.
- */
- deltaY: null,
-
- /**
- * Property: zoomStart
- * {<OpenLayers.Pixel>}
- */
- zoomStart: null,
-
- /**
- * Constructor: OpenLayers.Control.PanZoomBar
- */
- buttons: null,
-
- /**
- * APIMethod: destroy
- */
- destroy: function() {
-
- this._removeZoomBar();
-
- this.map.events.un({
- "changebaselayer": this.redraw,
- "updatesize": this.redraw,
- scope: this
- });
-
- OpenLayers.Control.PanZoom.prototype.destroy.apply(this, arguments);
-
- delete this.mouseDragStart;
- delete this.zoomStart;
- },
-
- /**
- * Method: setMap
- *
- * Parameters:
- * map - {<OpenLayers.Map>}
- */
- setMap: function(map) {
- OpenLayers.Control.PanZoom.prototype.setMap.apply(this, arguments);
- this.map.events.on({
- "changebaselayer": this.redraw,
- "updatesize": this.redraw,
- scope: this
- });
- },
-
- /**
- * Method: redraw
- * clear the div and start over.
- */
- redraw: function() {
- if (this.div !== null) {
- this.removeButtons();
- this._removeZoomBar();
- }
- this.draw();
- this.moveZoomBar();
- },
-
- /**
- * Method: draw
- *
- * Parameters:
- * px - {<OpenLayers.Pixel>}
- */
- draw: function(px) {
- // initialize our internal div
- OpenLayers.Control.prototype.draw.apply(this, arguments);
- px = this.position.clone();
-
- // place the controls
- this.buttons = [];
- var ids = ['panup', 'panleft', 'panright', 'pandown', 'zoomout', 'zoomin'];
-
- for (var i = 0; i < ids.length; i++) {
- var b = document.createElement('div');
- b.id = ids[i];
- b.action = ids[i];
- b.className = 'button olButton';
- this.div.appendChild(b);
- this.buttons.push(b);
- }
-
- this._addZoomBar();
- return this.div;
- },
-
- /**
- * Method: _addZoomBar
- *
- * Parameters:
- * centered - {<OpenLayers.Pixel>} where zoombar drawing is to start.
- */
- _addZoomBar:function() {
- var id = this.id + "_" + this.map.id;
- var zoomsToEnd = this.map.getNumZoomLevels() - 1 - this.map.getZoom();
- var slider = document.createElement('div');
- slider.id = 'slider';
- slider.className = 'button';
- slider.style.cursor = 'move';
- this.slider = slider;
-
- this.sliderEvents = new OpenLayers.Events(this, slider, null, true,
- { includeXY: true });
- this.sliderEvents.on({
- "touchstart": this.zoomBarDown,
- "touchmove": this.zoomBarDrag,
- "touchend": this.zoomBarUp,
- "mousedown": this.zoomBarDown,
- "mousemove": this.zoomBarDrag,
- "mouseup": this.zoomBarUp
- });
-
- var height = this.zoomStopHeight * (this.map.getNumZoomLevels());
-
- // this is the background image
- var div = document.createElement('div');
- div.className = 'button olButton';
- div.id = 'zoombar';
- this.zoombarDiv = div;
-
- this.div.appendChild(div);
- this.startTop = 75;
- this.div.appendChild(slider);
-
- this.map.events.register("zoomend", this, this.moveZoomBar);
- },
-
- /**
- * Method: _removeZoomBar
- */
- _removeZoomBar: function() {
- this.sliderEvents.un({
- "touchstart": this.zoomBarDown,
- "touchmove": this.zoomBarDrag,
- "touchend": this.zoomBarUp,
- "mousedown": this.zoomBarDown,
- "mousemove": this.zoomBarDrag,
- "mouseup": this.zoomBarUp
- });
- this.sliderEvents.destroy();
-
- this.div.removeChild(this.zoombarDiv);
- this.zoombarDiv = null;
- this.div.removeChild(this.slider);
- this.slider = null;
-
- this.map.events.unregister("zoomend", this, this.moveZoomBar);
- },
-
- /**
- * Method: onButtonClick
- *
- * Parameters:
- * evt - {Event}
- */
- onButtonClick: function(evt) {
- OpenLayers.Control.PanZoom.prototype.onButtonClick.apply(this, arguments);
- if (evt.buttonElement === this.zoombarDiv) {
- var levels = evt.buttonXY.y / this.zoomStopHeight;
- if (this.forceFixedZoomLevel || !this.map.fractionalZoom) {
- levels = Math.floor(levels);
- }
- var zoom = (this.map.getNumZoomLevels() - 1) - levels;
- zoom = Math.min(Math.max(zoom, 0), this.map.getNumZoomLevels() - 1);
- this.map.zoomTo(zoom);
- }
- },
-
- /**
- * Method: passEventToSlider
- * This function is used to pass events that happen on the div, or the map,
- * through to the slider, which then does its moving thing.
- *
- * Parameters:
- * evt - {<OpenLayers.Event>}
- */
- passEventToSlider:function(evt) {
- this.sliderEvents.handleBrowserEvent(evt);
- },
-
- /*
- * Method: zoomBarDown
- * event listener for clicks on the slider
- *
- * Parameters:
- * evt - {<OpenLayers.Event>}
- */
- zoomBarDown:function(evt) {
- if (!OpenLayers.Event.isLeftClick(evt) && !OpenLayers.Event.isSingleTouch(evt)) {
- return;
- }
- this.map.events.on({
- "touchmove": this.passEventToSlider,
- "mousemove": this.passEventToSlider,
- "mouseup": this.passEventToSlider,
- scope: this
- });
- this.mouseDragStart = evt.xy.clone();
- this.zoomStart = evt.xy.clone();
- this.div.style.cursor = "move";
- // reset the div offsets just in case the div moved
- this.zoombarDiv.offsets = null;
- OpenLayers.Event.stop(evt);
- },
-
- /*
- * Method: zoomBarDrag
- * This is what happens when a click has occurred, and the client is
- * dragging. Here we must ensure that the slider doesn't go beyond the
- * bottom/top of the zoombar div, as well as moving the slider to its new
- * visual location
- *
- * Parameters:
- * evt - {<OpenLayers.Event>}
- */
- zoomBarDrag: function(evt) {
- if (this.mouseDragStart !== null) {
- var deltaY = this.mouseDragStart.y - evt.xy.y;
- var offsets = OpenLayers.Util.pagePosition(this.zoombarDiv);
- if ((evt.clientY - offsets[1]) > 0 &&
- (evt.clientY - offsets[1]) < 140) {
- var newTop = parseInt(this.slider.style.top, 10) - deltaY;
- this.slider.style.top = newTop + "px";
- this.mouseDragStart = evt.xy.clone();
- }
- // set cumulative displacement
- this.deltaY = this.zoomStart.y - evt.xy.y;
- OpenLayers.Event.stop(evt);
- }
- },
-
- /*
- * Method: zoomBarUp
- * Perform cleanup when a mouseup event is received -- discover new zoom
- * level and switch to it.
- *
- * Parameters:
- * evt - {<OpenLayers.Event>}
- */
- zoomBarUp: function(evt) {
- if (!OpenLayers.Event.isLeftClick(evt) && evt.type !== "touchend") {
- return;
- }
- if (this.mouseDragStart) {
- this.div.style.cursor = "";
- this.map.events.un({
- "touchmove": this.passEventToSlider,
- "mouseup": this.passEventToSlider,
- "mousemove": this.passEventToSlider,
- scope: this
- });
- var zoomLevel = this.map.zoom;
- zoomLevel += this.deltaY/this.zoomStopHeight;
- zoomLevel = Math.max(Math.round(zoomLevel), 0);
- this.map.zoomTo(zoomLevel);
- this.mouseDragStart = null;
- this.zoomStart = null;
- this.deltaY = 0;
- OpenLayers.Event.stop(evt);
- }
- },
-
- /*
- * Method: moveZoomBar
- * Change the location of the slider to match the current zoom level.
- */
- moveZoomBar:function() {
- var newTop =
- ((this.map.getNumZoomLevels()-1) - this.map.getZoom()) *
- this.zoomStopHeight + this.startTop;
- this.slider.style.top = newTop + "px";
- },
- CLASS_NAME: "OpenLayers.Control.SimplePanZoom"
-});
projects / rails.git / blobdiff