Merge pull request #380 from emil-sawicki9/feature/charts-x-axis

Added grid chart with x axis

limereport/items/charts/lrgridlineschart.cpp

@@ -0,0 +1,112 @@
+#include "lrgridlineschart.h"
+
+namespace LimeReport {
+void GridLinesChart::paintChart(QPainter *painter, QRectF chartRect)
+{
+    updateMinAndMaxValues();
+
+    const qreal hPadding = this->hPadding(chartRect);
+    const qreal vPadding = this->vPadding(chartRect);
+
+    const qreal valuesVMargin = this->valuesVMargin(painter);
+
+    QRectF gridRect = chartRect.adjusted(
+        hPadding,
+        vPadding + valuesVMargin * 2,
+        -hPadding * 3,
+        -vPadding * 3
+        );
+
+    if (!m_chartItem->horizontalAxisOnTop()) {
+        // If horizontal axis is on the bottom, move grid a little up
+        gridRect.adjust(0, -valuesVMargin, 0 , -valuesVMargin);
+    }
+
+    // Adapt font for horizontal axis
+    painter->setFont(adaptFont((gridRect.width() - this->valuesHMargin(painter)) / xAxisData().segmentCount() * 0.8,
+                               painter->font(),
+                               xAxisData()));
+
+    const qreal valuesHMargin = this->valuesHMargin(painter);
+
+    // Adjust vertical axis labels padding
+    gridRect.adjust(valuesHMargin * 0.2, 0, 0, 0);
+
+    paintGrid(painter, gridRect);
+
+    paintSerialLines(
+        painter,
+        gridRect.adjusted(hPadding + valuesHMargin, 0, 0, 0)
+        );
+}
+
+void GridLinesChart::paintSerialLines(QPainter* painter, QRectF barsRect)
+{
+    if (valuesCount() == 0) return;
+
+    painter->save();
+    painter->setRenderHint(QPainter::Antialiasing,true);
+
+    const AxisData &yAxisData = this->yAxisData();
+    const qreal delta = yAxisData.delta();
+
+    if (m_chartItem->itemMode() == DesignMode){
+        const qreal hStep = barsRect.width() / valuesCount();
+        const qreal vStep = barsRect.height() / delta;
+        const qreal topShift = (delta - (maxValue() - minValue())) * vStep + barsRect.top();
+        drawDesignMode(painter, hStep, vStep, topShift, barsRect);
+        painter->restore();
+        return;
+    }
+
+    const AxisData &xAxisData = this->xAxisData();
+    const qreal hStep = barsRect.width() / (xAxisData.rangeMax() - xAxisData.rangeMin());
+
+    qreal leftMargin = 0;
+    const qreal topMargin = barsRect.top();
+
+    for (SeriesItem* series : m_chartItem->series()) {
+        QPen pen(series->color());
+        pen.setWidth(m_chartItem->seriesLineWidth());
+        painter->setPen(pen);
+
+        const QList<qreal> &xAxisValues = series->data()->xAxisValues();
+        const QList<qreal> &values = series->data()->values();
+        const int xAxisValuesSize = xAxisValues.size();
+        qreal lastXPos = 0;
+        qreal lastYPos = 0;
+        if (!values.isEmpty()) {
+            // Calculate first point position on plot before loop
+            lastYPos = calculatePos(yAxisData, values.first(), barsRect.height());
+        }
+        if (xAxisValues.isEmpty()) {
+            leftMargin = barsRect.left();
+        } else {
+            leftMargin = barsRect.left();
+            lastXPos = calculatePos(xAxisData, xAxisValues.first(), barsRect.width());
+        }
+        for (int i = 0; i < values.count() - 1; ++i ) {
+            const qreal startY = lastYPos;
+            const qreal endY = calculatePos(yAxisData, values.at(i+1), barsRect.height());
+            // Record last used Y position to only calculate new one
+            lastYPos = endY;
+
+            qreal startX = lastXPos;
+            qreal endX = 0;
+            if (i + 1 < xAxisValuesSize) {
+                endX = calculatePos(xAxisData, xAxisValues.at(i+1), barsRect.width());
+            } else {
+                endX = startX + hStep;
+            }
+            // Record last used X position to only calculate new one
+            lastXPos = endX;
+
+            QPoint startPoint = QPoint(startX + leftMargin, startY + topMargin);
+            QPoint endPoint = QPoint(endX + leftMargin, endY + topMargin);
+            drawSegment(painter, startPoint, endPoint, series->color());
+        }
+    }
+
+    painter->restore();
+}
+}

limereport/items/charts/lrgridlineschart.h

@@ -0,0 +1,17 @@
+#ifndef GRIDLINESCHART_H
+#define GRIDLINESCHART_H
+
+#include "lrlineschart.h"
+
+namespace LimeReport {
+class GridLinesChart : public LinesChart{
+public:
+    GridLinesChart(ChartItem* chartItem):LinesChart(chartItem){}
+    void paintChart(QPainter *painter, QRectF chartRect);
+
+private:
+    void paintSerialLines(QPainter *painter, QRectF barsRect);
+};
+}
+
+#endif // GRIDLINESCHART_H

limereport/items/charts/lrhorizontalbarchart.cpp

@@ -20,7 +20,9 @@ void HorizontalBarChart::paintChart(QPainter *painter, QRectF chartRect)
     paintHorizontalGrid(painter, chartRect.adjusted(
                                      hPadding(chartRect) + barsShift,
                                      vPadding(chartRect),
-                                     -(hPadding(chartRect)),-vPadding(chartRect)));
+                                     -(hPadding(chartRect)),
+                                     -vPadding(chartRect)));
+
     paintHorizontalBars(painter, chartRect.adjusted(
                                      hPadding(chartRect) + barsShift,
                                      vPadding(chartRect) * 2,
@@ -36,25 +38,33 @@ void HorizontalBarChart::paintHorizontalBars(QPainter *painter, QRectF barsRect)
 
     painter->save();
     painter->setRenderHint(QPainter::Antialiasing,false);
+
     const AxisData &yAxisData = this->yAxisData();
     const qreal delta = yAxisData.delta();
 
-    qreal vStep = (barsRect.height()-painter->fontMetrics().height()) / valuesCount() / seriesCount();
+    const qreal verticalOffset = painter->fontMetrics().height();
+    qreal vStep = (barsRect.height() - verticalOffset) / valuesCount() / seriesCount();
     qreal hStep = (barsRect.width()-painter->fontMetrics().boundingRect(QString::number(maxValue())).width()) / delta;
 
     if (!m_chartItem->series().isEmpty() && (m_chartItem->itemMode() != DesignMode)){
-        int curSeries = 0;
+        qreal curVOffset = barsRect.top();
+        if (m_chartItem->horizontalAxisOnTop()) {
+            curVOffset += verticalOffset;
+        }
         foreach (SeriesItem* series, m_chartItem->series()) {
-            qreal curVOffset = curSeries*vStep+barsRect.top();
             painter->setBrush(series->color());
+            qreal y = curVOffset;
             foreach (qreal value, series->data()->values()) {
-                painter->drawRect(QRectF((-minValue()*hStep)+barsRect.left(), curVOffset, value*hStep, vStep));
+                painter->drawRect(QRectF((-minValue()*hStep)+barsRect.left(), y, value*hStep, vStep));
-                curVOffset+=vStep*seriesCount();
+                y+=vStep*seriesCount();
             }
-            curSeries++;
+            curVOffset += vStep;
         }
     } else {
         qreal curVOffset = barsRect.top();
+        if (m_chartItem->horizontalAxisOnTop()) {
+            curVOffset += verticalOffset;
+        }
         int curColor = 0;
         for (int i=0; i<9; ++i){
             if (curColor==3) curColor=0;

limereport/items/charts/lrlineschart.cpp

@@ -68,17 +68,18 @@ void LinesChart::drawDesignMode(QPainter* painter, qreal hStep, qreal vStep, qre
     }
 }
 
-qreal LinesChart::calculateValueYPos(qreal, qreal max, qreal value, qreal delta, qreal height)
+qreal LinesChart::calculatePos(const AxisData &data, qreal value, qreal rectSize) const
 {
-    return (max - value) / delta * height;
+    return (data.rangeMax() - value) / data.delta() * rectSize;
 }
 
 void LinesChart::paintSeries(QPainter *painter, SeriesItem *series, QRectF barsRect)
 {
     const AxisData &yAxisData = this->yAxisData();
-    const qreal delta = yAxisData.delta();
+    const AxisData &xAxisData = this->xAxisData();
 
-    const qreal hStep = barsRect.width() / valuesCount();
+    const qreal xAxisDiff = std::max(1.0, xAxisData.maxValue() - xAxisData.minValue());
+    const qreal hStep = barsRect.width() / xAxisDiff;
     const qreal topMargin = barsRect.top();
 
     QPen pen(series->color());
@@ -91,11 +92,11 @@ void LinesChart::paintSeries(QPainter *painter, SeriesItem *series, QRectF barsR
     qreal lastXValue = barsRect.left() + hStep/2;
     if (!values.isEmpty()) {
         // Calculate first point position on plot before loop
-        lastYValue = calculateValueYPos(yAxisData.rangeMin(), yAxisData.rangeMax(), values.first(), delta, barsRect.height());
+        lastYValue = calculatePos(yAxisData, values.first(), barsRect.height());
     }
     for (int i = 0; i < values.count()-1; ++i ){
         const qreal startY = lastYValue;
-        const qreal endY = calculateValueYPos(yAxisData.rangeMin(), yAxisData.rangeMax(), values.at(i+1), delta, barsRect.height());
+        const qreal endY = calculatePos(yAxisData, values.at(i+1), barsRect.height());
         // Record last used Y position to only calculate new one
         lastYValue = endY;
 

limereport/items/charts/lrlineschart.h

@@ -10,7 +10,7 @@ public:
     void paintChart(QPainter *painter, QRectF chartRect);
 protected:
     void drawDesignMode(QPainter *painter, qreal hStep, qreal vStep, qreal topShift, QRectF barsRect);
-    qreal calculateValueYPos(qreal min, qreal max, qreal value, qreal delta, qreal height);
+    qreal calculatePos(const AxisData &data, qreal value, qreal rectSize) const;
     void paintSeries(QPainter *painter, SeriesItem *series, QRectF barsRect);
 
 private:

limereport/items/lrchartitem.cpp

@@ -13,6 +13,7 @@
 #include "charts/lrverticalbarchart.h"
 #include "charts/lrhorizontalbarchart.h"
 #include "charts/lrlineschart.h"
+#include "charts/lrgridlineschart.h"
 
 namespace{
 
@@ -79,6 +80,16 @@ void SeriesItem::setLabelsColumn(const QString &labelsColumn)
     m_labelsColumn = labelsColumn;
 }
 
+QString SeriesItem::xAxisColumn() const
+{
+    return m_xAxisColumn;
+}
+
+void SeriesItem::setXAxisColumn(const QString &xAxisColumn)
+{
+    m_xAxisColumn = xAxisColumn;
+}
+
 SeriesItem *SeriesItem::clone()
 {
     SeriesItem* result = new SeriesItem();
@@ -98,6 +109,8 @@ void SeriesItem::fillSeriesData(IDataSource *dataSource)
         while(!dataSource->eof()){
             if (!m_labelsColumn.isEmpty())
                 m_data.labels().append(dataSource->data(m_labelsColumn).toString());
+            if (!m_xAxisColumn.isEmpty())
+                m_data.xAxisValues().append(dataSource->data(m_xAxisColumn).toDouble());
             m_data.values().append(dataSource->data(m_valuesColumn).toDouble());
             m_data.colors().append((currentColorIndex<32)?color_map[currentColorIndex]:generateColor());
             dataSource->next();
@@ -130,7 +143,8 @@ ChartItem::ChartItem(QObject *owner, QGraphicsItem *parent)
     : ItemDesignIntf(xmlTag, owner, parent), m_legendBorder(true),
       m_legendAlign(LegendAlignCenter), m_titleAlign(TitleAlignCenter),
       m_chartType(Pie), m_labelsField(""), m_isEmpty(true),
-      m_showLegend(true), m_drawPoints(true), m_seriesLineWidth(4)
+      m_showLegend(true), m_drawPoints(true), m_seriesLineWidth(4),
+      m_horizontalAxisOnTop(false), m_gridChartLines(AllLines)
 {
     m_labels<<"First"<<"Second"<<"Thrid";
     m_chart = new PieChart(this);
@@ -235,6 +249,7 @@ void ChartItem::updateItemSize(DataSourceManager *dataManager, RenderPass , int
         foreach (SeriesItem* series, m_series) {
             if (series->isEmpty()){
                 series->setLabelsColumn(m_labelsField);
+                series->setXAxisColumn(m_xAxisField);
                 series->fillSeriesData(ds);
             }
         }
@@ -327,6 +342,10 @@ void ChartItem::setChartType(const ChartType &chartType)
             break;
         case Lines:
             m_chart = new LinesChart(this);
+            break;
+        case GridLines:
+            m_chart = new GridLinesChart(this);
+            break;
         }
         notify("chartType",oldValue,m_chartType);
         update();
@@ -464,6 +483,50 @@ void ChartItem::setSeriesLineWidth(int newSeriesLineWidth)
     m_seriesLineWidth = newSeriesLineWidth;
 }
 
+QString ChartItem::xAxisField() const
+{
+    return m_xAxisField;
+}
+
+void ChartItem::setXAxisField(const QString &xAxisField)
+{
+    m_xAxisField = xAxisField;
+}
+
+bool ChartItem::horizontalAxisOnTop() const
+{
+    return m_horizontalAxisOnTop;
+}
+
+void ChartItem::setHorizontalAxisOnTop(bool horizontalAxisOnTop)
+{
+    if (m_horizontalAxisOnTop != horizontalAxisOnTop){
+        m_horizontalAxisOnTop = horizontalAxisOnTop;
+        notify("horizontalAxisOnTop", !m_horizontalAxisOnTop, m_horizontalAxisOnTop);
+        update();
+    }
+    m_horizontalAxisOnTop = horizontalAxisOnTop;
+}
+
+ChartItem::GridChartLines ChartItem::gridChartLines() const
+{
+    return m_gridChartLines;
+}
+
+void ChartItem::setGridChartLines(GridChartLines flags)
+{
+    if (m_gridChartLines == flags) {
+        return;
+    }
+    GridChartLines oldValue = m_gridChartLines;
+    m_gridChartLines = flags;
+    if (isLoading()) {
+        return;
+    }
+    update(rect());
+    notify("gridChartLines",QVariant(oldValue),QVariant(flags));
+}
+
 AbstractChart::AbstractChart(ChartItem *chartItem)
     :m_chartItem(chartItem)
 {
@@ -552,22 +615,43 @@ AxisData AbstractSeriesChart::yAxisData()
     return m_yAxisData;
 }
 
+AxisData AbstractSeriesChart::xAxisData()
+{
+    return m_xAxisData;
+}
+
 void AbstractSeriesChart::updateMinAndMaxValues()
 {
     qreal maxYValue = 0;
     qreal minYValue = 0;
+    qreal maxXValue = 0;
+    qreal minXValue = 0;
     if (m_chartItem->itemMode() == DesignMode) {
         maxYValue = 40;
+        maxXValue = 40;
     } else {
         for (SeriesItem* series : m_chartItem->series()){
             for (qreal value : series->data()->values()){
                 minYValue = std::min(minYValue, value);
                 maxYValue = std::max(maxYValue, value);
             }
+            if (series->data()->xAxisValues().isEmpty()) {
+                // Grid plot starts from 0 on x axis so x range must be decresed by 1
+                const bool startingFromZero = m_chartItem->chartType() == ChartItem::GridLines;
+                const qreal valuesCount = this->valuesCount() - (startingFromZero ? 1 : 0);
+                minXValue = std::min(0.0, minXValue);
+                maxXValue = std::max(valuesCount, maxXValue);
+            } else {
+                for (qreal value : series->data()->xAxisValues()){
+                    minXValue = std::min(value, minXValue);
+                    maxXValue = std::max(value, maxXValue);
+                }
+            }
         }
     }
 
     m_yAxisData = AxisData(minYValue, maxYValue);
+    m_xAxisData = AxisData(minXValue, maxXValue);
 }
 
 qreal AbstractSeriesChart::hPadding(QRectF chartRect)
@@ -686,7 +770,6 @@ void AbstractSeriesChart::paintHorizontalGrid(QPainter *painter, QRectF gridRect
     painter->save();
 
     const AxisData &yAxisData = this->yAxisData();
-    const qreal delta = yAxisData.delta();
 
     const int segmentCount = yAxisData.segmentCount();
     const int lineCount = segmentCount + 1;
@@ -694,15 +777,20 @@ void AbstractSeriesChart::paintHorizontalGrid(QPainter *painter, QRectF gridRect
     painter->setRenderHint(QPainter::Antialiasing,false);
     qreal hStep = (gridRect.width() - painter->fontMetrics().boundingRect(QString::number(maxValue())).width()) / segmentCount;
 
-    painter->setFont(adaptValuesFont(hStep-4, painter->font()));
+    painter->setFont(adaptFont(hStep-4, painter->font(), yAxisData));
 
+    QPointF textPos;
+    if (m_chartItem->horizontalAxisOnTop()) {
+        textPos.setY(gridRect.top());
+    } else {
+        textPos.setY(gridRect.bottom() - painter->fontMetrics().height());
+    }
     for (int i = 0 ; i < lineCount ; i++ ) {
-        painter->drawText(QRectF(gridRect.left() + 4 + hStep * i, gridRect.bottom() - painter->fontMetrics().height(),
+        const qreal x = gridRect.left() + hStep * i;
-                                 hStep, painter->fontMetrics().height()),
+        textPos.setX(x + 4);
-                          QString::number(minValue() + i * delta / segmentCount));
+        painter->drawText(QRectF(textPos, QSizeF(hStep, painter->fontMetrics().height())),
-        painter->drawLine( gridRect.left()+hStep*i, gridRect.bottom(),
+                          axisLabel(i, yAxisData));
-                          gridRect.left()+hStep*i, gridRect.top());
+        painter->drawLine(x, gridRect.bottom(), x, gridRect.top());
-
     }
     painter->restore();
 }
@@ -727,7 +815,7 @@ void AbstractSeriesChart::paintVerticalGrid(QPainter *painter, QRectF gridRect)
         const qreal y = vStep * i;
         painter->drawText(QRectF(gridRect.bottomLeft()-QPointF(textPositionOffset,y+halfFontHeight),
                                  QSizeF(valuesHMargin,fontHeight)),
-                          verticalLabel(i, yAxisData.step(), yAxisData.rangeMin()),
+                          axisLabel(i, yAxisData),
                           verticalTextOption);
         painter->drawLine(gridRect.bottomLeft()-QPointF(-valuesHMargin,y),
                           gridRect.bottomRight()-QPointF(0,y));
@@ -736,6 +824,73 @@ void AbstractSeriesChart::paintVerticalGrid(QPainter *painter, QRectF gridRect)
     painter->setRenderHint(QPainter::Antialiasing,true);
 }
 
+void AbstractSeriesChart::paintGrid(QPainter *painter, QRectF gridRect)
+{
+    painter->save();
+
+    const AxisData &yAxisData = this->yAxisData();
+    const AxisData &xAxisData = this->xAxisData();
+
+    painter->setRenderHint(QPainter::Antialiasing,false);
+
+    const int xAxisSegmentCount = xAxisData.segmentCount();
+    const int xAxisLineCount = xAxisSegmentCount + 1;
+    const int yAxisSegmentCount = yAxisData.segmentCount();
+    const int yAxisLineCount = yAxisSegmentCount + 1;
+
+    const int fontHeight = painter->fontMetrics().height();
+    const int halfFontHeight = fontHeight / 2;
+    const QSizeF gridOffset = QSizeF(hPadding(gridRect), vPadding(gridRect));
+    const qreal valuesHMargin = this->valuesHMargin(painter);
+    const qreal vStep = gridRect.height() / yAxisSegmentCount;
+    const qreal hStep = (gridRect.width() - valuesHMargin - gridOffset.width()) / xAxisSegmentCount;
+    const qreal textPositionHOffset = valuesHMargin * 0.1;
+
+    // Vertical axis lines
+    const QTextOption verticalTextOption(Qt::AlignRight);
+    for (int i = 0 ; i < yAxisLineCount ; i++ ) {
+        const qreal y = vStep * i;
+        const bool drawFullLine = m_chartItem->gridChartLines() & ChartItem::HorizontalLine
+                                  || i == 0 || i == xAxisSegmentCount;
+        painter->drawText(QRectF(gridRect.bottomLeft()-QPointF(textPositionHOffset, y + halfFontHeight),
+                                 QSizeF(valuesHMargin,fontHeight)),
+                          axisLabel(i, yAxisData),
+                          verticalTextOption);
+
+        QPointF lineEndPos = gridRect.bottomRight() - QPointF(0, y);
+        if (!drawFullLine) {
+            lineEndPos.setX(gridRect.left() + valuesHMargin + gridOffset.width());
+        }
+        painter->drawLine(gridRect.bottomLeft() - QPointF(-valuesHMargin, y), lineEndPos);
+    }
+
+    // Horizontal axis lines
+    for (int i = 0 ; i < xAxisLineCount ; i++) {
+        const qreal x = gridRect.left() + hStep * i + valuesHMargin + gridOffset.width();
+        const bool drawFullLine = m_chartItem->gridChartLines() & ChartItem::VerticalLine
+                                  || i == 0 || i == xAxisSegmentCount;
+        const QString text = axisLabel(i, xAxisData);
+
+        if (m_chartItem->horizontalAxisOnTop()) {
+            painter->drawLine(x, gridRect.top() - gridOffset.height(),
+                              x, (drawFullLine ? gridRect.bottom() : gridRect.top()));
+            painter->drawText(QRectF(x - painter->fontMetrics().width(text) / 2,
+                                     gridRect.top() - (fontHeight + gridOffset.height()),
+                                     hStep, fontHeight),
+                              text);
+        } else {
+            painter->drawLine(x, gridRect.bottom() + gridOffset.height(),
+                              x, (drawFullLine ? gridRect.top() : gridRect.bottom()));
+            painter->drawText(QRectF(x - painter->fontMetrics().width(text) / 2,
+                                     gridRect.bottom() + halfFontHeight * 0 + gridOffset.height(),
+                                     hStep, fontHeight),
+                              text);
+        }
+    }
+
+    painter->restore();
+}
+
 void AbstractSeriesChart::drawSegment(QPainter *painter, QPoint startPoint, QPoint endPoint, QColor color)
 {
     int radius = m_chartItem->seriesLineWidth();
@@ -761,7 +916,7 @@ qreal AbstractSeriesChart::valuesHMargin(QPainter *painter)
     const int yAxisLineCount = yAxisData.segmentCount() + 1;
 
     for (int i = 0 ; i < yAxisLineCount ; i++) {
-        const QString label = verticalLabel(i, yAxisData.step(), yAxisData.rangeMin());
+        const QString label = axisLabel(i, yAxisData);
         max = std::max(max, (qreal)painter->fontMetrics().boundingRect(label).width()+offset);
     }
     return max;
@@ -797,28 +952,33 @@ QFont AbstractSeriesChart::adaptLabelsFont(QRectF rect, QFont font)
     return tmpFont;
 }
 
-QFont AbstractSeriesChart::adaptValuesFont(qreal width, QFont font)
+QFont AbstractSeriesChart::adaptFont(qreal width, QFont font, const AxisData &axisData)
 {
-    QString strValue = QString::number(maxValue());
     QFont tmpFont = font;
+    const int axisLineCount = axisData.segmentCount() + 1;
     QScopedPointer<QFontMetricsF> fm(new QFontMetricsF(tmpFont));
-    qreal curWidth = fm->boundingRect(strValue).width();
+    for (int i = 0 ; i < axisLineCount ; i++) {
-    while (curWidth > width && tmpFont.pixelSize() > 1){
+        QString strValue = axisLabel(i, axisData);
-        tmpFont.setPixelSize(tmpFont.pixelSize() - 1);
+        qreal curWidth = fm->boundingRect(strValue).width();
-        fm.reset(new QFontMetricsF(tmpFont));
+        while (curWidth > width && tmpFont.pixelSize() > 1){
-        curWidth = fm->boundingRect(strValue).width();
+            tmpFont.setPixelSize(tmpFont.pixelSize() - 1);
+            fm.reset(new QFontMetricsF(tmpFont));
+            curWidth = fm->boundingRect(strValue).width();
+        }
     }
     return tmpFont;
 }
 
-QString AbstractSeriesChart::verticalLabel(int i, qreal step, qreal min)
+QString AbstractSeriesChart::axisLabel(int i, const AxisData &axisData)
 {
+    const qreal min = axisData.rangeMin();
+    const qreal step = axisData.step();
     qreal value = min + i * step;
     if (std::floor(step) == step) {
         return QString::number(value);
     }
     // For float round numbers to small precision
-    return QString::number(value, 'g', 2);
+    return QString::number(round(value * 100.0) / 100.0);
 }
 
 void AbstractBarChart::paintChartLegend(QPainter *painter, QRectF legendRect)
@@ -897,4 +1057,5 @@ QRectF AbstractBarChart::horizontalLabelsRect(QPainter *painter, QRectF labelsRe
     else
         return labelsRect.adjusted(0, (labelsRect.height() - maxWidth), 0, 0);
 }
+
 } // namespace LimeReport

limereport/items/lrchartitem.h

@@ -16,11 +16,12 @@ class SeriesItemData : public QObject{
     Q_OBJECT
 public:
     QList<qreal>& values(){ return m_values;}
+    QList<qreal>& xAxisValues(){ return m_xAxisValues;}
     QList<QString>& labels(){ return m_labels;}
     QList<QColor>& colors() { return m_colors;}
     void clear(){ m_values.clear(); m_labels.clear(); m_colors.clear(); }
 private:
-    QList<qreal> m_values;
+    QList<qreal> m_values, m_xAxisValues;
     QList<QString> m_labels;
     QList<QColor> m_colors;
 };
@@ -30,6 +31,7 @@ class SeriesItem : public QObject{
     Q_PROPERTY(QString name READ name WRITE setName)
     Q_PROPERTY(QString valuesColumn READ valuesColumn WRITE setValuesColumn)
     Q_PROPERTY(QString labelsColumn READ labelsColumn WRITE setLabelsColumn)
+    Q_PROPERTY(QString xAxisColumn READ xAxisColumn WRITE setXAxisColumn)
     Q_PROPERTY(QColor color READ color WRITE setColor)
     Q_PROPERTY(SeriesItemPreferredType preferredType READ preferredType WRITE setPreferredType)
 public:
@@ -46,6 +48,8 @@ public:
     void setValuesColumn(const QString &valuesColumn);
     QString labelsColumn() const;
     void setLabelsColumn(const QString &labelsColumn);
+    QString xAxisColumn() const;
+    void setXAxisColumn(const QString &xAxisColumn);
     SeriesItem* clone();
     void fillSeriesData(IDataSource* dataSource);
     SeriesItemData* data(){ return &m_data;}
@@ -58,6 +62,7 @@ private:
     QString m_name;
     QString m_valuesColumn;
     QString m_labelsColumn;
+    QString m_xAxisColumn;
     SeriesItemData m_data;
     QColor m_color;
     SeriesItemPreferredType m_preferredType;
@@ -84,9 +89,10 @@ class AbstractSeriesChart: public AbstractChart{
 public:
     AbstractSeriesChart(ChartItem* chartItem);
 protected:
+    AxisData yAxisData();
+    AxisData xAxisData();
     qreal maxValue();
     qreal minValue();
-    AxisData yAxisData();
     void updateMinAndMaxValues();
     int valuesCount();
     int seriesCount();
@@ -98,16 +104,17 @@ protected:
     virtual void paintHorizontalLabels(QPainter *painter, QRectF labelsRect);
     virtual void paintVerticalLabels(QPainter *painter, QRectF labelsRect);
     virtual void paintHorizontalGrid(QPainter *painter, QRectF gridRect);
+    virtual void paintGrid(QPainter *painter, QRectF gridRect);
     virtual void paintVerticalGrid(QPainter *painter, QRectF gridRect);
     virtual void drawSegment(QPainter *painter, QPoint startPoint, QPoint endPoint, QColor color);
     virtual qreal valuesHMargin(QPainter *painter);
     virtual qreal valuesVMargin(QPainter *painter);
     virtual QFont adaptLabelsFont(QRectF rect, QFont font);
-    virtual QFont adaptValuesFont(qreal width, QFont font);
+    virtual QFont adaptFont(qreal width, QFont font, const AxisData &axisData);
-    virtual QString verticalLabel(int i, qreal step, qreal min);
+    virtual QString axisLabel(int i, const AxisData &axisData);
 
 private:
-    AxisData m_yAxisData;
+    AxisData m_yAxisData, m_xAxisData;
     qreal m_designValues [9];
 };
 
@@ -136,21 +143,37 @@ class ChartItem : public LimeReport::ItemDesignIntf
     //linesChart
     Q_PROPERTY(bool drawPoints READ drawPoints WRITE setDrawPoints)
     Q_PROPERTY(int seriesLineWidth READ seriesLineWidth WRITE setSeriesLineWidth)
+    Q_PROPERTY(bool horizontalAxisOnTop READ horizontalAxisOnTop WRITE setHorizontalAxisOnTop)
+
+    //gridChart
+    Q_FLAGS(GridChartLines)
+    Q_PROPERTY(QString xAxisField READ xAxisField WRITE setXAxisField)
+    Q_PROPERTY(GridChartLines gridChartLines READ gridChartLines WRITE setGridChartLines)
     friend class AbstractChart;
 public:
 
     enum LegendAlign{LegendAlignTop,LegendAlignCenter,LegendAlignBottom};
+    enum LegendStyle{LegendPoints, LegendLines};
     enum TitleAlign{TitleAlignLeft, TitleAlignCenter, TitleAlignRight};
-    enum ChartType{Pie, VerticalBar, HorizontalBar, Lines};
+    enum ChartType{Pie, VerticalBar, HorizontalBar, Lines, GridLines};
+    enum LineType {
+        NoLine = 0,
+        HorizontalLine = 1,
+        VerticalLine = 2,
+        AllLines = 3
+    };
 #if QT_VERSION >= 0x050500
     Q_ENUM(LegendAlign)
     Q_ENUM(TitleAlign)
     Q_ENUM(ChartType)
+    Q_ENUM(LineType)
 #else
     Q_ENUMS(LegendAlign)
     Q_ENUMS(TitleAlign)
     Q_ENUMS(ChartType)
+    Q_ENUMS(LineType)
 #endif
+    Q_DECLARE_FLAGS(GridChartLines, LineType)
 
     ChartItem(QObject* owner, QGraphicsItem* parent);
     ~ChartItem();
@@ -194,6 +217,15 @@ public:
     int seriesLineWidth() const;
     void setSeriesLineWidth(int newSeriesLineWidth);
 
+    QString xAxisField() const;
+    void setXAxisField(const QString &xAxisField);
+
+    bool horizontalAxisOnTop() const;
+    void setHorizontalAxisOnTop(bool horizontalAxisOnTop);
+
+    GridChartLines gridChartLines() const;
+    void setGridChartLines(GridChartLines flags);
+
 protected:
     void paintChartTitle(QPainter* painter, QRectF titleRect);
     virtual BaseDesignIntf* createSameTypeItem(QObject *owner, QGraphicsItem *parent);
@@ -222,6 +254,9 @@ private:
     bool m_showLegend;
     bool m_drawPoints;
     int m_seriesLineWidth;
+    QString m_xAxisField;
+    bool m_horizontalAxisOnTop;
+    GridChartLines m_gridChartLines;
 };
 } //namespace LimeReport
 #endif // LRCHARTITEM_H

limereport/items/lrchartitemeditor.cpp

@@ -106,6 +106,7 @@ void ChartItemEditor::init()
                 for (int i=0;i<ds->columnCount();++i){
                    ui->valuesFieldComboBox->addItem(ds->columnNameByIndex(i));
                    ui->labelsFieldComboBox->addItem(ds->columnNameByIndex(i));
+                   ui->xAxisFieldComboBox->addItem(ds->columnNameByIndex(i));
                 }
             }
         }
@@ -120,8 +121,10 @@ void ChartItemEditor::init()
 
 #if QT_VERSION < 0x050000
     ui->labelsFieldComboBox->setCurrentIndex(ui->labelsFieldComboBox->findText( m_charItem->labelsField()));
+    ui->xAxisFieldComboBox->setCurrentIndex(ui->xAxisFieldComboBox->findText( m_charItem->xAxisField()));
 #else
     ui->labelsFieldComboBox->setCurrentText(m_charItem->labelsField());
+    ui->xAxisFieldComboBox->setCurrentText(m_charItem->xAxisField());
 #endif
     if (!m_charItem->series().isEmpty()){
         enableSeriesEditor();
@@ -287,3 +290,9 @@ void ChartItemEditor::on_seriesTypeComboBox_currentIndexChanged(const QString &a
         currentSeries()->setPreferredType(static_cast<LimeReport::SeriesItem::SeriesItemPreferredType>(enumerator.keysToValue(arg1.toLatin1())));
     }
 }
+
+void ChartItemEditor::on_xAxisFieldComboBox_currentTextChanged(const QString &arg1)
+{
+    if (!m_initing)
+        m_charItem->setXAxisField(arg1);
+}

limereport/items/lrchartitemeditor.h

@@ -41,6 +41,8 @@ private slots:
     void slotChangeSeriesColor();
     void on_seriesTypeComboBox_currentIndexChanged(const QString &arg1);
 
+    void on_xAxisFieldComboBox_currentTextChanged(const QString &arg1);
+
 private:
     void readSetting();
     void writeSetting();

limereport/items/lrchartitemeditor.ui

@@ -144,16 +144,30 @@
     </widget>
    </item>
    <item>
-    <layout class="QHBoxLayout" name="horizontalLayout_2">
+    <layout class="QGridLayout" name="gridLayout">
-     <item>
+     <item row="0" column="1">
+      <widget class="QComboBox" name="labelsFieldComboBox">
+       <property name="editable">
+        <bool>true</bool>
+       </property>
+      </widget>
+     </item>
+     <item row="0" column="0">
       <widget class="QLabel" name="labelsFieldLabel">
        <property name="text">
         <string>Labels field</string>
        </property>
       </widget>
      </item>
-     <item>
+     <item row="1" column="0">
-      <widget class="QComboBox" name="labelsFieldComboBox">
+      <widget class="QLabel" name="xAxisFieldLabel">
+       <property name="text">
+        <string>X data field</string>
+       </property>
+      </widget>
+     </item>
+     <item row="1" column="1">
+      <widget class="QComboBox" name="xAxisFieldComboBox">
        <property name="editable">
         <bool>true</bool>
        </property>

limereport/limereport.pri

@@ -49,6 +49,7 @@ SOURCES += \
     $$REPORT_PATH/items/lrchartitemeditor.cpp \
     $$REPORT_PATH/items/charts/lrhorizontalbarchart.cpp \
     $$REPORT_PATH/items/charts/lrlineschart.cpp \
+    $$REPORT_PATH/items/charts/lrgridlineschart.cpp \
     $$REPORT_PATH/items/charts/lrpiechart.cpp \
     $$REPORT_PATH/items/charts/lrverticalbarchart.cpp \
     $$REPORT_PATH/lrbanddesignintf.cpp \
@@ -132,6 +133,7 @@ HEADERS += \
     $$REPORT_PATH/items/lrchartitemeditor.h \
     $$REPORT_PATH/items/charts/lrhorizontalbarchart.h \
     $$REPORT_PATH/items/charts/lrlineschart.h \
+    $$REPORT_PATH/items/charts/lrgridlineschart.h \
     $$REPORT_PATH/items/charts/lrpiechart.h \
     $$REPORT_PATH/items/charts/lrverticalbarchart.h \
     $$REPORT_PATH/lrbanddesignintf.h \

limereport/lraxisdata.h

@@ -20,9 +20,9 @@ public:
     qreal step() const;
 
     qreal delta() const;
+
 private:
     void calculateValuesAboveMax(qreal minValue, qreal maxValue, int segments);
-    qreal calculateNiceNum(qreal range, bool round);
 
     qreal m_rangeMin;
     qreal m_rangeMax;

limereport/objectinspector/lrobjectitemmodel.cpp

@@ -144,6 +144,7 @@ void QObjectPropertyModel::translatePropertyName()
     tr("chartType");
     tr("drawLegendBorder");
     tr("labelsField");
+    tr("xAxisField");
     tr("legendAlign");
     tr("series");
     tr("titleAlign");
@@ -170,6 +171,8 @@ void QObjectPropertyModel::translatePropertyName()
     tr("removeGap");
     tr("dropPrinterMargins");
     tr("notPrintIfEmpty");
+    tr("gridChartLines");
+    tr("horizontalAxisOnTop");
     tr("mixWithPriorPage");
 }