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#include "barpresenter.h"
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#include "bar_p.h"
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#include "barlabel_p.h"
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#include "barvalue_p.h"
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#include "qbarset.h"
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#include <QDebug>
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QTCOMMERCIALCHART_BEGIN_NAMESPACE
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BarPresenter::BarPresenter(BarChartModel& model, QGraphicsItem *parent) :
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BarPresenterBase(model,parent)
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{
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mBarDefaultWidth = 15;
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}
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void BarPresenter::layoutChanged()
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{
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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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qDebug() << "No sets in model!";
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return;
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}
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if (childItems().count() == 0) {
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qDebug() << "WARNING: BarPresenter::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 categoryCount = mModel.countCategories();
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int setCount = 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 = categoryCount+1;
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qreal xStepPerSet = (tW/tC);
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// Scaling.
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int itemIndex(0);
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int labelIndex(0);
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for (int category=0; category < categoryCount; category++) {
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qreal xPos = xStepPerSet * category + ((tW + mBarDefaultWidth*setCount)/(categoryCount*2));
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qreal yPos = mHeight;
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for (int set = 0; set < setCount; set++) {
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qreal barHeight = mModel.valueAt(set, category) * scale;
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Bar* bar = mBars.at(itemIndex);
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// TODO: width settable per bar?
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bar->resize(mBarDefaultWidth, barHeight);
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bar->setBrush(mModel.setAt(set).brush());
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bar->setPos(xPos, yPos-barHeight); // item*posStep+startPos + set * 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 = xStepPerSet * category + ((tW + mBarDefaultWidth*setCount)/(categoryCount*2));
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BarLabel* label = mLabels.at(labelIndex);
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label->setPos(xPos, mHeight + 20);
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labelIndex++;
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}
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// Position floating values
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itemIndex = 0;
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for (int category=0; category < mModel.countCategories(); category++) {
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qreal xPos = xStepPerSet * category + ((tW + mBarDefaultWidth*setCount)/(categoryCount*2));
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qreal yPos = mHeight;
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for (int set=0; set < mModel.countSets(); set++) {
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qreal barHeight = mModel.valueAt(set,category) * scale;
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BarValue* value = mFloatingValues.at(itemIndex);
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// TODO: remove hard coding, apply layout
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value->resize(100,50);
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value->setPos(xPos + mBarDefaultWidth/2, yPos-barHeight/2);
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value->setPen(QPen(QColor(255,255,255,255)));
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QString vString(QString::number(mModel.valueAt(set,category)));
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value->setValueString(vString);
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itemIndex++;
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xPos += mBarDefaultWidth;
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}
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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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