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/**
*
* This file is part of Tulip (www.tulip-software.org)
*
* Authors: David Auber and the Tulip development Team
* from LaBRI, University of Bordeaux
*
* Tulip is free software; you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License
* as published by the Free Software Foundation, either version 3
* of the License, or (at your option) any later version.
*
* Tulip is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
* See the GNU General Public License for more details.
*
*/
#include <tulip/GraphTools.h>
#include "TreeLeaf.h"
#include "DatasetTools.h"
#include "Orientation.h"
PLUGIN(TreeLeaf)
using namespace std;
using namespace tlp;
const char* paramHelp[] = {
//Orientation
HTML_HELP_OPEN() \
HTML_HELP_DEF("Type", "bool") \
HTML_HELP_DEF("Default", "true") \
HTML_HELP_BODY() \
"If the layer spacing is uniform, the spacing between to consecutive layers will be the same." \
HTML_HELP_CLOSE(),
};
void TreeLeaf::computeLevelHeights(tlp::Graph *tree, tlp::node n, unsigned int depth,
OrientableSizeProxy *oriSize) {
if (levelHeights.size() == depth)
levelHeights.push_back(0);
float nodeHeight = oriSize->getNodeValue(n).getH();
if (nodeHeight > levelHeights[depth])
levelHeights[depth] = nodeHeight;
node on;
forEach(on, tree->getOutNodes(n))
computeLevelHeights(tree, on, depth + 1, oriSize);
}
float TreeLeaf::dfsPlacement(tlp::Graph* tree, tlp::node n, float x, float y, unsigned int depth,
OrientableLayout *oriLayout, OrientableSizeProxy *oriSize) {
float minX = 0;
float maxX = 0;
float nodeWidth = oriSize->getNodeValue(n).getW();
if (tree->outdeg(n) == 0) {
oriLayout->setNodeValue(n, OrientableCoord(oriLayout, x + nodeWidth/2, y, 0));
return x + nodeWidth;
}
Iterator<node> *itN=tree->getOutNodes(n);
float layerSpacing = minLayerSpacing;
if (uniformLayerDistance == false) {
if (depth < levelHeights.size()-1) {
layerSpacing += nodeSpacing;
layerSpacing = max(minLayerSpacing, (levelHeights[depth] + levelHeights[depth + 1]) / 2);
}
}
if (itN->hasNext()) {
node itn = itN->next();
minX = x;
maxX = x = dfsPlacement(tree, itn, x, y + layerSpacing, depth + 1, oriLayout, oriSize);
if (minX + nodeWidth > maxX)
maxX = minX + nodeWidth;
}
for (; itN->hasNext();) {
node itn = itN->next();
x += nodeSpacing;
x = dfsPlacement(tree, itn, x, y + layerSpacing, depth + 1, oriLayout, oriSize);
if (x > maxX)
maxX = x;
if (x < minX)
minX = x;
}
delete itN;
x = (minX + maxX)/2;
oriLayout->setNodeValue(n, OrientableCoord(oriLayout, x, y, 0));
return maxX;
}
TreeLeaf::TreeLeaf(const tlp::PluginContext* context):LayoutAlgorithm(context) {
addNodeSizePropertyParameter(this);
addOrientationParameters(this);
addInParameter<bool>("uniform layer spacing", paramHelp[0], "true");
addSpacingParameters(this);
}
TreeLeaf::~TreeLeaf() {}
bool TreeLeaf::run() {
orientationType mask = getMask(dataSet);
OrientableLayout oriLayout(result, mask);
SizeProperty* size;
if (!getNodeSizePropertyParameter(dataSet, size))
size = graph->getProperty<SizeProperty>("viewSize");
uniformLayerDistance = true;
if (dataSet != NULL)
dataSet->get("uniform layer spacing", uniformLayerDistance);
OrientableSizeProxy oriSize(size, mask);
getSpacingParameters(dataSet, nodeSpacing, minLayerSpacing);
if (pluginProgress)
pluginProgress->showPreview(false);
// push a temporary graph state (not redoable)
// preserving layout updates
std::vector<PropertyInterface*> propsToPreserve;
if (result->getName() != "")
propsToPreserve.push_back(result);
graph->push(false, &propsToPreserve);
Graph *tree = TreeTest::computeTree(graph, pluginProgress);
if (pluginProgress && pluginProgress->state() != TLP_CONTINUE) {
graph->pop();
return false;
}
node root = tree->getSource();
if (!root.isValid())
// graph is empty
return true;
computeLevelHeights(tree, root, 0, &oriSize);
// check if the specified layer spacing is greater
// than the max of the minimum layer spacing of the tree
if (uniformLayerDistance == true) {
for (unsigned int i = 0; i < levelHeights.size() - 1; ++i) {
float layerSpacing = (levelHeights[i] + levelHeights[i + 1]) / 2 + nodeSpacing;
if (layerSpacing > minLayerSpacing)
minLayerSpacing = layerSpacing;
}
}
dfsPlacement(tree, root, 0, 0, 0, &oriLayout, &oriSize);
// forget last temporary graph state
graph->pop();
return true;
}
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