##// END OF EJS Templates
model prototyping for bar chart
model prototyping for bar chart

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percentbargroup.cpp
74 lines | 2.3 KiB | text/x-c | CppLexer
#include "percentbargroup.h"
#include "bar_p.h"
#include "barlabel_p.h"
#include "separator_p.h"
#include <QDebug>
QTCOMMERCIALCHART_BEGIN_NAMESPACE
PercentBarGroup::PercentBarGroup(PercentBarChartSeries& series, QGraphicsItem *parent) :
BarGroupBase(series, parent)
{
}
void PercentBarGroup::layoutChanged()
{
/*
// Scale bars to new layout
// Layout for bars:
if (mSeries.countRows() <= 0) {
// Nothing to do.
return;
}
// TODO: better way to auto-layout
// Use reals for accurancy (we might get some compiler warnings... :)
int count = mSeries.countColumns();
int itemIndex(0);
qreal tW = mWidth;
qreal tC = count+1;
qreal xStep = (tW/tC);
// qreal xPos = ((tW/tC) + mBarDefaultWidth / 2);
qreal xPos = ((tW/tC) - mBarDefaultWidth / 2);
int labelIndex = mSeries.countColumns() * mSeries.countRows();
for (int column = 0; column < mSeries.countColumns(); column++) {
qreal colSum = mSeries.columnSum(column);
qreal h = mHeight;
qreal scale = (h / colSum);
qreal yPos = h;
for (int row=0; row < mSeries.countRows(); row++) {
qreal barHeight = mSeries.valueAt(row, column) * scale;
Bar* bar = reinterpret_cast<Bar*> (childItems().at(itemIndex));
// TODO: width settable per bar?
bar->resize(mBarDefaultWidth, barHeight);
bar->setColor(mColors.at(row));
bar->setPos(xPos, yPos-barHeight);
itemIndex++;
yPos -= barHeight;
}
// TODO: Layout for labels, remove magic number
BarLabel* label = reinterpret_cast<BarLabel*> (childItems().at(labelIndex));
label->setPos(xPos, mHeight + 20);
labelIndex++;
xPos += xStep;
}
// Position separators
int separatorIndex = labelIndex; // Separators are after labels in childItems(). TODO: better way to store these?
xPos = xStep + xStep/2; // Initial position is between first and second group. ie one and half steps from left.
for (int s=0; s < mSeries.countColumns() - 1; s++) {
Separator* sep = reinterpret_cast<Separator*> (childItems().at(separatorIndex));
sep->setPos(xPos,0);
sep->setSize(QSizeF(1,mHeight));
xPos += xStep;
separatorIndex++;
}
*/
mLayoutDirty = true;
}
QTCOMMERCIALCHART_END_NAMESPACE