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244 lines
7.7 KiB
244 lines
7.7 KiB
/**
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* Created by Alex on 1/22/14.
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*/
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var UIMixin = {
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/**
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* This function moves the navigationUI if the canvas size has been changed. If the arugments
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* verticaAlignTop and horizontalAlignLeft are false, the correction will be made
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*
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* @private
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*/
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_relocateUI : function() {
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if (this.sectors !== undefined) {
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var xOffset = this.UIclientWidth - this.frame.canvas.clientWidth;
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var yOffset = this.UIclientHeight - this.frame.canvas.clientHeight;
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this.UIclientWidth = this.frame.canvas.clientWidth;
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this.UIclientHeight = this.frame.canvas.clientHeight;
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var node = null;
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for (var nodeId in this.sectors["navigationUI"]["nodes"]) {
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if (this.sectors["navigationUI"]["nodes"].hasOwnProperty(nodeId)) {
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node = this.sectors["navigationUI"]["nodes"][nodeId];
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if (!node.horizontalAlignLeft) {
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node.x -= xOffset;
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}
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if (!node.verticalAlignTop) {
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node.y -= yOffset;
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}
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}
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}
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}
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},
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/**
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* Creation of the navigationUI nodes. They are drawn over the rest of the nodes and are not affected by scale and translation
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* they have a triggerFunction which is called on click. If the position of the navigationUI is dependent
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* on this.frame.canvas.clientWidth or this.frame.canvas.clientHeight, we flag horizontalAlignLeft and verticalAlignTop false.
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* This means that the location will be corrected by the _relocateUI function on a size change of the canvas.
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*
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* @private
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*/
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_loadUIElements : function() {
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var DIR = this.constants.navigationUI.iconPath;
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this.UIclientWidth = this.frame.canvas.clientWidth;
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this.UIclientHeight = this.frame.canvas.clientHeight;
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if (this.UIclientWidth === undefined) {
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this.UIclientWidth = 0;
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this.UIclientHeight = 0;
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}
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var offset = 15;
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var intermediateOffset = 7;
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var UINodes = [
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{id: 'UI_up', shape: 'image', image: DIR + 'uparrow.png', triggerFunction: "_moveUp",
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verticalAlignTop: false, x: 45 + offset + intermediateOffset, y: this.UIclientHeight - 45 - offset - intermediateOffset},
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{id: 'UI_down', shape: 'image', image: DIR + 'downarrow.png', triggerFunction: "_moveDown",
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verticalAlignTop: false, x: 45 + offset + intermediateOffset, y: this.UIclientHeight - 15 - offset},
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{id: 'UI_left', shape: 'image', image: DIR + 'leftarrow.png', triggerFunction: "_moveLeft",
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verticalAlignTop: false, x: 15 + offset, y: this.UIclientHeight - 15 - offset},
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{id: 'UI_right', shape: 'image', image: DIR + 'rightarrow.png',triggerFunction: "_moveRight",
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verticalAlignTop: false, x: 75 + offset + 2 * intermediateOffset, y: this.UIclientHeight - 15 - offset},
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{id: 'UI_plus', shape: 'image', image: DIR + 'plus.png', triggerFunction: "_zoomIn",
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verticalAlignTop: false, horizontalAlignLeft: false,
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x: this.UIclientWidth - 45 - offset - intermediateOffset, y: this.UIclientHeight - 15 - offset},
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{id: 'UI_min', shape: 'image', image: DIR + 'minus.png', triggerFunction: "_zoomOut",
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verticalAlignTop: false, horizontalAlignLeft: false,
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x: this.UIclientWidth - 15 - offset, y: this.UIclientHeight - 15 - offset},
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{id: 'UI_zoomExtends', shape: 'image', image: DIR + 'zoomExtends.png', triggerFunction: "zoomToFit",
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verticalAlignTop: false, horizontalAlignLeft: false,
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x: this.UIclientWidth - 15 - offset, y: this.UIclientHeight - 45 - offset - intermediateOffset}
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];
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var nodeObj = null;
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for (var i = 0; i < UINodes.length; i++) {
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nodeObj = this.sectors["navigationUI"]['nodes'];
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nodeObj[UINodes[i]['id']] = new Node(UINodes[i], this.images, this.groups, this.constants);
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}
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},
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/**
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* By setting the clustersize to be larger than 1, we use the clustering drawing method
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* to illustrate the buttons are presed. We call this highlighting.
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*
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* @param {String} elementId
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* @private
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*/
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_highlightUIElement : function(elementId) {
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if (this.sectors["navigationUI"]["nodes"].hasOwnProperty(elementId)) {
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this.sectors["navigationUI"]["nodes"][elementId].clusterSize = 2;
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}
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},
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/**
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* Reverting back to a normal button
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*
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* @param {String} elementId
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* @private
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*/
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_unHighlightUIElement : function(elementId) {
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if (this.sectors["navigationUI"]["nodes"].hasOwnProperty(elementId)) {
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this.sectors["navigationUI"]["nodes"][elementId].clusterSize = 1;
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}
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},
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/**
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* un-highlight (for lack of a better term) all navigationUI elements
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* @private
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*/
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_unHighlightAll : function() {
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for (var nodeId in this.sectors['navigationUI']['nodes']) {
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this._unHighlightUIElement(nodeId);
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}
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},
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_preventDefault : function(event) {
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if (event !== undefined) {
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if (event.preventDefault) {
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event.preventDefault();
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} else {
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event.returnValue = false;
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}
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}
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},
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/**
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* move the screen up
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* By using the increments, instead of adding a fixed number to the translation, we keep fluent and
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* instant movement. The onKeypress event triggers immediately, then pauses, then triggers frequently
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* To avoid this behaviour, we do the translation in the start loop.
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*
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* @private
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*/
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_moveUp : function(event) {
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this._highlightUIElement("UI_up");
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this.yIncrement = this.constants.keyboardNavigation.speed.y;
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this.start(); // if there is no node movement, the calculation wont be done
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this._preventDefault(event);
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},
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/**
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* move the screen down
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* @private
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*/
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_moveDown : function(event) {
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this._highlightUIElement("UI_down");
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this.yIncrement = -this.constants.keyboardNavigation.speed.y;
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this.start(); // if there is no node movement, the calculation wont be done
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this._preventDefault(event);
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},
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/**
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* move the screen left
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* @private
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*/
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_moveLeft : function(event) {
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this._highlightUIElement("UI_left");
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this.xIncrement = this.constants.keyboardNavigation.speed.x;
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this.start(); // if there is no node movement, the calculation wont be done
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this._preventDefault(event);
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},
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/**
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* move the screen right
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* @private
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*/
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_moveRight : function(event) {
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this._highlightUIElement("UI_right");
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this.xIncrement = -this.constants.keyboardNavigation.speed.y;
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this.start(); // if there is no node movement, the calculation wont be done
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this._preventDefault(event);
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},
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/**
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* Zoom in, using the same method as the movement.
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* @private
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*/
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_zoomIn : function(event) {
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this._highlightUIElement("UI_plus");
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this.zoomIncrement = this.constants.keyboardNavigation.speed.zoom;
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this.start(); // if there is no node movement, the calculation wont be done
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this._preventDefault(event);
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},
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/**
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* Zoom out
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* @private
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*/
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_zoomOut : function() {
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this._highlightUIElement("UI_min");
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this.zoomIncrement = -this.constants.keyboardNavigation.speed.zoom;
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this.start(); // if there is no node movement, the calculation wont be done
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this._preventDefault(event);
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},
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/**
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* Stop zooming and unhighlight the zoom controls
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* @private
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*/
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_stopZoom : function() {
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this._unHighlightUIElement("UI_plus");
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this._unHighlightUIElement("UI_min");
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this.zoomIncrement = 0;
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},
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/**
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* Stop moving in the Y direction and unHighlight the up and down
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* @private
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*/
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_yStopMoving : function() {
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this._unHighlightUIElement("UI_up");
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this._unHighlightUIElement("UI_down");
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this.yIncrement = 0;
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},
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/**
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* Stop moving in the X direction and unHighlight left and right.
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* @private
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*/
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_xStopMoving : function() {
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this._unHighlightUIElement("UI_left");
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this._unHighlightUIElement("UI_right");
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this.xIncrement = 0;
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}
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};
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