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One more alternative for changing themes
One more alternative for changing themes

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r108:4cbe204cc325
r108:4cbe204cc325
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stackedbargroup.cpp
134 lines | 3.2 KiB | text/x-c | CppLexer
/ src / barchart / stackedbargroup.cpp
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r105 #include "stackedbargroup.h"
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added missing example files :)
r96 #include "bar.h"
#include <QDebug>
QTCOMMERCIALCHART_BEGIN_NAMESPACE
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r105 StackedBarGroup::StackedBarGroup(StackedBarChartSeries& series, QGraphicsItem *parent) :
ChartItem(parent)
,mSeries(series)
,mLayoutSet(false)
,mLayoutDirty(true)
,mBarDefaultWidth(20) // TODO: remove hard coding, when we have layout code ready
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r96 {
dataChanged();
}
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r105
void StackedBarGroup::setSize(const QSize& size)
Tero Ahola
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r103 {
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r105 // qDebug() << "StackedBarGroup::setSize";
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r96 mWidth = size.width();
mHeight = size.height();
layoutChanged();
mLayoutSet = true;
}
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r105 void StackedBarGroup::setPlotDomain(const PlotDomain& data)
Tero Ahola
Refactored themes; now enabled for line, scatter and pies...
r103 {
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r105 qDebug() << "StackedBarGroup::setPlotDomain";
Tero Ahola
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r103 // TODO:
}
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r105 void StackedBarGroup::setBarWidth( int w )
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r96 {
mBarDefaultWidth = w;
}
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r105 int StackedBarGroup::addColor( QColor color )
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r96 {
int colorIndex = mColors.count();
mColors.append(color);
return colorIndex;
}
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r105 void StackedBarGroup::resetColors()
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r96 {
mColors.clear();
}
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r105 void StackedBarGroup::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget)
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r96 {
if (!mLayoutSet) {
qDebug() << "QBarChart::paint called without layout set. Aborting.";
return;
}
if (mLayoutDirty) {
// Layout or data has changed. Need to redraw.
foreach(QGraphicsItem* i, childItems()) {
i->paint(painter,option,widget);
}
}
}
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r105 QRectF StackedBarGroup::boundingRect() const
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r96 {
return QRectF(0,0,mWidth,mHeight);
}
sauimone
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r105 void StackedBarGroup::dataChanged()
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added missing example files :)
r96 {
qDebug() << "QBarChart::dataChanged mSeries";
// Find out maximum and minimum of all series
mMax = mSeries.max();
mMin = mSeries.min();
// Delete old bars
// Is this correct way to delete childItems?
foreach (QGraphicsItem* item, childItems()) {
delete item;
}
// Create new graphic items for bars
int totalItems = mSeries.countTotalItems();
for (int i=0; i<totalItems; i++) {
Bar *bar = new Bar(this);
childItems().append(bar);
}
mLayoutDirty = true;
}
sauimone
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r105 void StackedBarGroup::layoutChanged()
sauimone
added missing example files :)
r96 {
// Scale bars to new layout
// Layout for bars:
if (mSeries.countRows() <= 0) {
// Nothing to do.
return;
}
// TODO: better way to auto-layout
sauimone
bar chart layout fixing
r99 // Use reals for accurancy (we might get some compiler warnings... :)
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r105 qreal maxSum = mSeries.maxColumnSum();
qreal h = mHeight;
qreal scale = (h / maxSum);
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added missing example files :)
r96 int count = mSeries.countColumns();
int itemIndex(0);
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fixing layout bug on stacked bar chart
r98 qreal tW = mWidth;
qreal tC = count+1;
qreal xStep = (tW/tC);
qreal xPos = ((tW/tC) + mBarDefaultWidth / 2);
sauimone
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r96 for (int column = 0; column < mSeries.countColumns(); column++) {
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r98 qreal yPos = h;
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r96 for (int row=0; row < mSeries.countRows(); row++) {
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r98 qreal barHeight = mSeries.valueAt(row, column) * scale;
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r96 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);
itemIndex++;
sauimone
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r97 yPos -= barHeight;
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added missing example files :)
r96 }
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r98 xPos += xStep;
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r96 }
mLayoutDirty = true;
}
QTCOMMERCIALCHART_END_NAMESPACE