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https://bitbucket.org/wisemapping/wisemapping-open-source.git
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Balanced Layout first level approach
This commit is contained in:
Gonzalo Bellver
parent
86e80e324c
commit
f355c5a23a
175
mindplot/src/main/javascript/nlayout/BalancedSorter.js
Normal file
175
mindplot/src/main/javascript/nlayout/BalancedSorter.js
Normal file
@ -0,0 +1,175 @@
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mindplot.nlayout.BalancedSorter = new Class({
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Extends: mindplot.nlayout.ChildrenSorterStrategy,
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initialize: function() {
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},
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computeChildrenIdByHeights: function(treeSet, node) {
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var result = {};
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this._computeChildrenHeight(treeSet, node, result);
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return result;
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},
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_computeChildrenHeight : function(treeSet, node, heightCache) {
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var height = node.getSize().height + (mindplot.nlayout.BalancedSorter.INTERNODE_VERTICAL_PADDING * 2); // 2* Top and down padding;
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var result;
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var children = treeSet.getChildren(node);
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if (children.length == 0) {
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result = height;
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} else {
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var childrenHeight = 0;
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children.forEach(function(child) {
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childrenHeight += this._computeChildrenHeight(treeSet, child, heightCache);
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}, this);
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result = Math.max(height, childrenHeight);
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}
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if (heightCache) {
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heightCache[node.getId()] = result;
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}
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return result;
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},
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predict : function(parent, graph, position) {
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// No children...
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var children = graph.getChildren(parent);
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if (children.length == 0) {
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return [0,parent.getPosition()]; // @Todo:Change x ...
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}
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// Try to fit within ...
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//
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// - Order is change if the position top position is changed ...
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// - Suggested position is the middle between the two topics...
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//
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var result = null;
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children.forEach(function(child) {
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var cpos = child.getPosition();
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if (position.y > cpos.y) {
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result = [child.getOrder(),{x:cpos.x,y:cpos.y + child.getSize().height}];
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}
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});
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// Ok, no overlap. Suggest a new order.
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if (result) {
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var last = children.getLast();
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result = [last.getOrder() + 1,{x:cpos.x,y:cpos.y - (mindplot.nlayout.BalancedSorter.INTERNODE_VERTICAL_PADDING * 4)}];
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}
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return result;
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},
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insert: function(treeSet, parent, child, order) {
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var children = this._getSortedChildren(treeSet, parent);
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$assert(order <= children.length, "Order must be continues and can not have holes. Order:" + order);
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$assert(order <= children.length, "Order must be continues and can not have holes. Order:" + order);
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// Shift all the elements in one .
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for (var i = order; i < children.length; i++) {
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var node = children[i];
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node.setOrder(i + 1);
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}
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child.setOrder(order);
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},
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detach:function(treeSet, node) {
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var parent = treeSet.getParent(node);
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var children = this._getSortedChildren(treeSet, parent);
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var order = node.getOrder();
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$assert(children[order] === node, "Node seems not to be in the right position");
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// Shift all the nodes ...
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for (var i = node.getOrder() + 1; i < children.length; i++) {
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var child = children[i];
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child.setOrder(child.getOrder() - 1);
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}
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node.setOrder(0);
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},
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_getSortedChildren:function(treeSet, node) {
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var result = treeSet.getChildren(node);
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result.sort(function(a, b) {
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return a.getOrder() - b.getOrder()
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});
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return result;
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},
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verify:function(treeSet, node) {
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// Check that all is consistent ...
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var children = this._getSortedChildren(treeSet, node);
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for (var i = 0; i < children.length; i++) {
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$assert(children[i].getOrder() == i, "missing order elements");
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}
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},
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computeOffsets:function(treeSet, node) {
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$assert(treeSet, "treeSet can no be null.");
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$assert(node, "node can no be null.");
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var children = this._getSortedChildren(treeSet, node);
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// Compute heights ...
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var heights = children.map(function(child) {
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return {id:child.getId(), order:child.getOrder(), height:this._computeChildrenHeight(treeSet, child)};
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}, this);
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// Compute the center of the branch ...
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var totalPHeight = 0;
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var totalNHeight = 0;
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//TODO(gb): optimize using filter
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heights.forEach(function(elem) {
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if (elem.order % 2 == 0) {
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totalPHeight += elem.height;
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} else {
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totalNHeight += elem.height;
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}
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});
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var psum = totalPHeight/2;
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var nsum = totalNHeight/2;
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var totalDifference = totalPHeight - totalNHeight;
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var ysum = 0;
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// Calculate the offsets ...
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var result = {};
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for (var i = 0; i < heights.length; i++) {
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var direction = heights[i].order % 2 ? -1 : 1;
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if (direction > 0) {
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psum = psum - heights[i].height;
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ysum = psum;
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} else {
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nsum = nsum - heights[i].height;
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ysum = nsum;
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}
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// console.log("node {id: " + heights[i].id + ", order: " + heights[i].order + ", psum: " + psum + ", nsum: " + nsum + "}"); //TODO(gb): Remove trace!!!
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// console.log("totalPHeight: " + totalPHeight + ", totalNHeight: " + totalNHeight); //TODO(gb): Remove trace!!!
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console.log("node {id: " + heights[i].id + ", totalDifference: " + totalDifference + ", direction: " + direction + "}"); //TODO(gb): Remove trace!!!
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var yOffset = ysum + heights[i].height/2;
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var xOffset = direction * (node.getSize().width + mindplot.nlayout.SymetricSorter.INTERNODE_HORIZONTAL_PADDING);
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$assert(!isNaN(xOffset), "xOffset can not be null");
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$assert(!isNaN(yOffset), "yOffset can not be null");
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result[heights[i].id] = {x:xOffset,y:yOffset};
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}
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console.log("----------------------\n"); //TODO(gb): Remove trace!!!
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return result;
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},
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toString:function() {
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return "Balanced Sorter";
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}
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});
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mindplot.nlayout.BalancedSorter.INTERNODE_VERTICAL_PADDING = 5;
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mindplot.nlayout.BalancedSorter.INTERNODE_HORIZONTAL_PADDING = 5;
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mindplot.nlayout.BalancedSorter.INITIAL_HEIGHT = 100;
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@ -39,10 +39,14 @@ mindplot.nlayout.LayoutManager = new Class({
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// @Todo: finish...
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},
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find: function(id) {
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find: function(id) {
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return this._treeSet.find(id);
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},
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move: function() {
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//TODO(gb): implement
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},
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connectNode: function(parentId, childId, order) {
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$assert($defined(parentId), "parentId can not be null");
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$assert($defined(childId), "childId can not be null");
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@ -92,10 +96,10 @@ mindplot.nlayout.LayoutManager = new Class({
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plot: function(containerId, size) {
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$assert(containerId, "containerId cannot be null");
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size = size || {w:200,h:200};
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size = size || {width:200,height:200};
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var squaresize = 10;
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var canvas = Raphael(containerId, size.w, size.h);
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canvas.drawGrid(0, 0, size.w, size.h, size.w/squaresize, size.h/squaresize);
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var canvas = Raphael(containerId, size.width, size.height);
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canvas.drawGrid(0, 0, size.width, size.height, size.width/squaresize, size.height/squaresize);
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this._treeSet.plot(canvas);
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},
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@ -26,7 +26,9 @@ mindplot.nlayout.OriginalLayout = new Class({
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$assert(position, "position can not be null");
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$assert(type, "type can not be null");
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var strategy = type === 'root' ? mindplot.nlayout.OriginalLayout.GRID_SORTER : mindplot.nlayout.OriginalLayout.SYMETRIC_SORTER;
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var strategy = type === 'root' ?
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mindplot.nlayout.OriginalLayout.BALANCED_SORTER :
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mindplot.nlayout.OriginalLayout.SYMETRIC_SORTER;
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return new mindplot.nlayout.Node(id, size, position, strategy);
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},
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@ -120,6 +122,7 @@ mindplot.nlayout.OriginalLayout = new Class({
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mindplot.nlayout.OriginalLayout.SYMETRIC_SORTER = new mindplot.nlayout.SymetricSorter();
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mindplot.nlayout.OriginalLayout.GRID_SORTER = new mindplot.nlayout.GridSorter();
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mindplot.nlayout.OriginalLayout.BALANCED_SORTER = new mindplot.nlayout.BalancedSorter();
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@ -127,7 +127,6 @@ mindplot.nlayout.SymetricSorter = new Class({
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computeOffsets:function(treeSet, node) {
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$assert(treeSet, "treeSet can no be null.");
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$assert(node, "node can no be null.");
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$assert("order can no be null.");
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var children = this._getSortedChildren(treeSet, node);
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@ -18,14 +18,16 @@
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mindplot.nlayout.TestSuite = new Class({
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Extends: mindplot.nlayout.ChildrenSorterStrategy,
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initialize:function() {
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this.testAligned();
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this.testSymmetry();
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this.testGrid();
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this.testEvents();
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this.testEventsComplex();
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this.testDisconnect();
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this.testReconnect();
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this.testRemoveNode();
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// this.testAligned();
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// this.testSymmetry();
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this.testBalanced();
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// this.testGrid();
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// this.testEvents();
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// this.testEventsComplex();
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// this.testDisconnect();
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// this.testReconnect();
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// this.testRemoveNode();
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// this.testFreePosition();
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},
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testAligned: function() {
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@ -45,7 +47,7 @@ mindplot.nlayout.TestSuite = new Class({
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manager.layout();
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manager.dump();
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manager.plot("testAligned", {w:300,h:200});
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manager.plot("testAligned", {width:300,height:200});
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// All nodes should be vertically aligned
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$assert(manager.find(0).getPosition().y == manager.find(1).getPosition().y, "Nodes are not aligned");
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@ -90,11 +92,50 @@ mindplot.nlayout.TestSuite = new Class({
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manager.layout();
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manager.dump();
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manager.plot("testSymmetry",{w:500, h:300});
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manager.plot("testSymmetry",{width:500, height:300});
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//TODO(gb): make asserts
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},
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testBalanced: function() {
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// var size = {width:80, height:30};
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var size = {width:25, height:25};
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var plotsize = {width: 400, height:280};
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var position = {x:0, y:0};
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// var manager = new mindplot.nlayout.LayoutManager(0, {width:120, height:40});
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var manager = new mindplot.nlayout.LayoutManager(0, size);
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manager.addNode(1, size, position);
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manager.connectNode(0, 1, 0);
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manager.layout();
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manager.plot("testBalanced1", plotsize);
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manager.addNode(2, size, position);
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manager.connectNode(0, 2, 1);
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manager.layout();
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manager.plot("testBalanced2", plotsize);
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manager.addNode(3, size, position);
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manager.connectNode(0, 3, 2);
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manager.layout();
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manager.plot("testBalanced3", plotsize);
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manager.addNode(4, size, position);
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manager.connectNode(0, 4, 3);
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manager.layout();
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manager.plot("testBalanced4", plotsize);
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manager.addNode(5, size, position);
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manager.connectNode(0, 5, 4);
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manager.layout();
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manager.plot("testBalanced5", plotsize);
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manager.addNode(6, size, position);
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manager.connectNode(0, 6, 5);
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manager.layout();
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manager.plot("testBalanced6", plotsize);
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},
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testGrid: function() {
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var size = {width:25,height:25};
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var position = {x:0,y:0};
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@ -127,7 +168,7 @@ mindplot.nlayout.TestSuite = new Class({
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manager.connectNode(2, 6, 1);
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manager.connectNode(6, 7, 0);
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manager.layout();
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manager.plot("testGrid5", {w:300, h:300});
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manager.plot("testGrid5", {width:300, height:300});
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manager.dump();
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@ -236,16 +277,16 @@ mindplot.nlayout.TestSuite = new Class({
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events.push(event);
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});
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manager.layout(true);
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// manager.dump();
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manager.plot("testDisconnect1", {w:300, h:200});
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manager.dump();
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manager.plot("testDisconnect1", {width:300, height:200});
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// Now, disconnect one node ...
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console.log("--- Disconnect a single node ---");
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events.empty();
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manager.disconnectNode(2);
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manager.layout(true);
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// manager.dump();
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manager.plot("testDisconnect2", {w:300, h:200});
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manager.dump();
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manager.plot("testDisconnect2", {width:300, height:200});
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$assert(events.some(
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function(event) {
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@ -256,8 +297,8 @@ mindplot.nlayout.TestSuite = new Class({
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console.log("--- Disconnect a node with children ---");
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manager.disconnectNode(3);
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manager.layout(true);
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// manager.dump();
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manager.plot("testDisconnect3", {w:300, h:200});
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manager.dump();
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manager.plot("testDisconnect3", {width:300, height:200});
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$assert(events.some(
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function(event) {
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@ -297,14 +338,14 @@ mindplot.nlayout.TestSuite = new Class({
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manager.layout();
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manager.dump();
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manager.plot("testReconnect1",{w:400, h:300});
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manager.plot("testReconnect1",{width:400, height:300});
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// Reconnect node 6 to node 4
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manager.disconnectNode(6);
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manager.connectNode(4,6,0);
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manager.layout();
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manager.dump();
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manager.plot("testReconnect2",{w:400, h:300});
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manager.plot("testReconnect2",{width:400, height:300});
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//TODO(gb): make asserts
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},
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@ -334,7 +375,7 @@ mindplot.nlayout.TestSuite = new Class({
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});
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manager.layout(true);
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manager.dump();
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manager.plot("testRemoveNode1", {w:300, h:200});
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manager.plot("testRemoveNode1", {width:300, height:200});
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// Test removal of a connected node ...
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console.log("--- Remove node 3 ---");
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@ -342,6 +383,26 @@ mindplot.nlayout.TestSuite = new Class({
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manager.layout(true);
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manager.dump();
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manager.plot("testRemoveNode2");
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},
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testFreePosition: function() {
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var size = {width:25,height:25};
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var position = {x:0,y:0};
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var manager = new mindplot.nlayout.LayoutManager(0, size);
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// Prepare a sample graph ...
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manager.addNode(1, size, position);
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manager.addNode(2, size, position);
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manager.addNode(3, size, position);
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manager.addNode(4, size, position);
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manager.connectNode(0, 4, 0);
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manager.connectNode(4, 1, 0);
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manager.connectNode(4, 2, 1);
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manager.connectNode(4, 3, 2);
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manager.layout();
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manager.plot("testFreePosition");
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}
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@ -14,6 +14,7 @@
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<script type='text/javascript' src='../../../main/javascript/nlayout/ChildrenSorterStrategy.js'></script>
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<script type='text/javascript' src='../../../main/javascript/nlayout/SymetricSorter.js'></script>
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<script type='text/javascript' src='../../../main/javascript/nlayout/GridSorter.js'></script>
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<script type='text/javascript' src='../../../main/javascript/nlayout/BalancedSorter.js'></script>
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<script type='text/javascript' src='../../../main/javascript/nlayout/OriginalLayout.js'></script>
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<script type='text/javascript' src='../../../main/javascript/nlayout/ChangeEvent.js'></script>
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@ -57,6 +58,14 @@
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<div id="testGrid5" class="col last"></div>
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</div>
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<h2>testBalanced:</h2>
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<div id="testBalanced1" class="col"></div>
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<div id="testBalanced2" class="col"></div>
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<div id="testBalanced3" class="col last"></div>
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<div id="testBalanced4" class="col"></div>
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<div id="testBalanced5" class="col"></div>
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<div id="testBalanced6" class="col last"></div>
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<h2>testEvents:</h2>
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<div id="testEvents1" class="col"></div>
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<div id="testEvents2" class="col last"></div>
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@ -78,6 +87,9 @@
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<div id="testRemoveNode1" class="col"></div>
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<div id="testRemoveNode2" class="col last"></div>
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<h2>testFreePosition:</h2>
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<div id="testFreePosition"></div>
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</body>
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</html>
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