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#include <limits.h>
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#include <QVector>
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#include <QDebug>
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#include "barchartmodel_p.h"
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#include "qbarcategory.h"
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#include "qbarset.h"
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QTCOMMERCIALCHART_BEGIN_NAMESPACE
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BarChartModel::BarChartModel(QBarCategory *category, QObject *parent) :
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QObject(parent)
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,mCategory(category)
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{
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}
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BarChartModel::~BarChartModel()
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{
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delete mCategory;
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}
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QBarCategory& BarChartModel::category()
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{
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return *mCategory;
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}
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void BarChartModel::addBarSet(QBarSet *set)
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{
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mDataModel.append(set);
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}
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void BarChartModel::removeBarSet(QBarSet *set)
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{
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if (mDataModel.contains(set)) {
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mDataModel.removeOne(set);
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}
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}
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QBarSet* BarChartModel::nextSet(bool getFirst)
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{
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if (getFirst) {
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mCurrentSet = 0;
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}
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if ((mDataModel.count() <= 0) || (mDataModel.count() <= mCurrentSet)) {
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return 0;
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}
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QBarSet* set = mDataModel.at(mCurrentSet);
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mCurrentSet++;
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return set;
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}
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QBarSet* BarChartModel::setAt(int index)
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{
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return mDataModel.at(index);
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}
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QList<QString> BarChartModel::legend()
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{
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QList<QString> legend;
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for (int i=0; i<mDataModel.count(); i++) {
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legend.append(mDataModel.at(i)->name());
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}
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return legend;
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}
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int BarChartModel::countSets()
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{
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return mDataModel.count();
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}
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int BarChartModel::countCategories()
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{
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int count(0);
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for (int i=0; i<mDataModel.count(); i++){
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// TODO: can we assume that all series have same number of values? If not. then which values are empty?
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int temp = mDataModel.at(i)->count();
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if (temp > count) {
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count = temp;
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}
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}
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return count;
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}
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int BarChartModel::countTotalItems()
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{
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int total = mDataModel.count() * countCategories();
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return total;
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}
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qreal BarChartModel::min()
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{
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Q_ASSERT(mDataModel.count() > 0);
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// TODO: make min and max members and update them when data changes.
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// This is slower since they are checked every time, even if data is same since previous call.
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qreal min = INT_MAX;
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for (int i=0; i <mDataModel.count(); i++) {
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int itemCount = mDataModel.at(i)->count();
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for (int j=0; j<itemCount; j++) {
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qreal temp = mDataModel.at(i)->valueAt(j);
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if (temp < min) {
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min = temp;
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}
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}
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}
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return min;
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}
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qreal BarChartModel::max()
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{
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Q_ASSERT(mDataModel.count() > 0);
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// TODO: make min and max members and update them when data changes.
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// This is slower since they are checked every time, even if data is same since previous call.
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qreal max = INT_MIN;
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for (int i=0; i <mDataModel.count(); i++) {
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int itemCount = mDataModel.at(i)->count();
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for (int j=0; j<itemCount; j++) {
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qreal temp = mDataModel.at(i)->valueAt(j);
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if (temp > max) {
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max = temp;
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}
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}
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}
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return max;
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}
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qreal BarChartModel::valueAt(int set, int category)
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{
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if ((set < 0) || (set >= mDataModel.count())) {
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// No set, no value.
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return 0;
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} else if ((category < 0) || (category >= mDataModel.at(set)->count())) {
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// No category, no value.
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return 0;
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}
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return mDataModel.at(set)->valueAt(category);
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}
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qreal BarChartModel::percentageAt(int set, int category)
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{
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if ((set < 0) || (set >= mDataModel.count())) {
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// No set, no value.
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return 0;
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} else if ((category < 0) || (category >= mDataModel.at(set)->count())) {
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// No category, no value.
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return 0;
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}
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qreal value = mDataModel.at(set)->valueAt(category);
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qreal total = categorySum(category);
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if (0 == total) {
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return 100.0;
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}
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return value / total;
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}
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qreal BarChartModel::categorySum(int category)
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{
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qreal sum(0);
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int count = mDataModel.count(); // Count sets
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for (int set = 0; set < count; set++) {
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if (category < mDataModel.at(set)->count()) {
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sum += mDataModel.at(set)->valueAt(category);
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}
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}
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return sum;
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}
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qreal BarChartModel::maxCategorySum()
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{
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qreal max = INT_MIN;
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int count = countCategories();
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for (int col=0; col<count; col++) {
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qreal sum = categorySum(col);
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if (sum > max) {
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max = sum;
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}
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}
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return max;
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}
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QString BarChartModel::label(int category)
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{
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return mCategory->label(category);
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}
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#include "moc_barchartmodel_p.cpp"
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QTCOMMERCIALCHART_END_NAMESPACE
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