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#include "bargroup.h"
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#include "bar_p.h"
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#include "barlabel_p.h"
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#include <QDebug>
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QTCOMMERCIALCHART_BEGIN_NAMESPACE
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BarGroup::BarGroup(BarChartModel& model, QGraphicsItem *parent) :
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BarGroupBase(model,parent)
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{
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mBarDefaultWidth = 10;
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}
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void BarGroup::layoutChanged()
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{
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// qDebug() << "BarGroup::layoutChanged";
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// Scale bars to new layout
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// Layout for bars:
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if (mModel.countSets() <= 0) {
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return;
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}
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if (childItems().count() == 0) {
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qDebug() << "WARNING: BarGroup::layoutChanged called before graphics items are created!";
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return;
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}
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// TODO: better way to auto-layout?
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// Use reals for accurancy (we might get some compiler warnings... :)
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int itemCount = mModel.countCategories();
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int seriesCount = mModel.countSets();
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qreal tW = mWidth;
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qreal tH = mHeight;
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qreal tM = mModel.max();
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qreal scale = (tH/tM);
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qreal tC = itemCount+1;
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qreal xStepPerSeries = (tW/tC);
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// Scaling.
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int itemIndex(0);
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int labelIndex = itemCount * seriesCount;
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for (int item=0; item < itemCount; item++) {
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qreal xPos = xStepPerSeries * item + ((tW + mBarDefaultWidth*seriesCount)/(itemCount*2));
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qreal yPos = mHeight;
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for (int series = 0; series < seriesCount; series++) {
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qreal barHeight = mModel.valueAt(series, item) * scale;
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Bar* bar = reinterpret_cast<Bar*> (childItems().at(itemIndex));
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// TODO: width settable per bar?
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bar->resize(mBarDefaultWidth, barHeight);
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bar->setColor(mColors.at(series));
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bar->setPos(xPos, yPos-barHeight); // item*posStep+startPos + series * mBarDefaultWidth, mHeight);
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itemIndex++;
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xPos += mBarDefaultWidth;
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}
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// TODO: Layout for labels, remove magic number
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xPos = xStepPerSeries * item + ((tW + mBarDefaultWidth*seriesCount)/(itemCount*2));
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BarLabel* label = reinterpret_cast<BarLabel*> (childItems().at(labelIndex));
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label->setPos(xPos, mHeight + 20);
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labelIndex++;
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}
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mLayoutDirty = true;
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}
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QTCOMMERCIALCHART_END_NAMESPACE
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