File indexing completed on 2024-05-12 16:33:27

 /* This file is part of the KDE project
 
    Copyright 2017 Dag Andersen <danders@get2net.dk>
    Copyright 2010 Johannes Simon <johannes.simon@gmail.com>
 
    This library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Library General Public
    License as published by the Free Software Foundation; either
    version 2 of the License, or (at your option) any later version.
 
    This library is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
    Library General Public License for more details.
 
    You should have received a copy of the GNU Library General Public License
    along with this library; see the file COPYING.LIB.  If not, write to
    the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  * Boston, MA 02110-1301, USA.
 */
 
 // Qt
 #include <QRectF>
 #include <QTransform>
 
 // KoChart
 #include "ChartLayout.h"
 #include "Legend.h"
 #include "ChartDebug.h"
 #include "PlotArea.h"
 #include "Axis.h"
 #include "ScreenConversions.h"
 
 // Calligra
 #include <KoShapeContainer.h>
 
 #include <KChartCartesianAxis.h>
 
 using namespace KoChart;
 
 class ChartLayout::LayoutData
 {
 public:
     int  itemType;
     QRectF rect;
     bool inheritsTransform;
     bool clipped;
 
     LayoutData(int _itemType = GenericItemType)
         : itemType(_itemType)
         , inheritsTransform(true)
         , clipped(true)
     {}
 };
 
 // static
 bool ChartLayout::autoPosition(const KoShape *shape)
 {
     return shape->additionalStyleAttribute("chart:auto-position") == "true";
 }
 
 // static
 bool ChartLayout::autoSize(const KoShape *shape)
 {
     return shape->additionalStyleAttribute("chart:auto-size") == "true";
 }
 
 ChartLayout::ChartLayout()
     : m_doingLayout(false)
     , m_relayoutScheduled(false)
     , m_padding(5., 5., 5., 5.)
     , m_spacing(5., 5.)
     , m_layoutingEnabled(true)
 {
 }
 
 ChartLayout::~ChartLayout()
 {
     foreach(LayoutData *data, m_layoutItems.values())
         delete data;
 }
 
 void ChartLayout::add(KoShape *shape)
 {
     Q_ASSERT(!m_layoutItems.contains(shape));
     setItemType(shape, GenericItemType);
 }
 
 void ChartLayout::remove(KoShape *shape)
 {
     m_shapes.remove(m_shapes.key(shape));
     if (m_layoutItems.contains(shape)) {
         // delete LayoutData
         delete m_layoutItems.value(shape);
         m_layoutItems.remove(shape);
         scheduleRelayout();
     }
 }
 
 void ChartLayout::setClipped(const KoShape *shape, bool clipping)
 {
     Q_ASSERT(m_layoutItems.contains(const_cast<KoShape*>(shape)));
     m_layoutItems.value(const_cast<KoShape*>(shape))->clipped = clipping;
 }
 
 bool ChartLayout::isClipped(const KoShape *shape) const
 {
     Q_ASSERT(m_layoutItems.contains(const_cast<KoShape*>(shape)));
     return m_layoutItems.value(const_cast<KoShape*>(shape))->clipped;
 }
 
 void ChartLayout::setInheritsTransform(const KoShape *shape, bool inherit)
 {
     m_layoutItems.value(const_cast<KoShape*>(shape))->inheritsTransform = inherit;
 }
 
 bool ChartLayout::inheritsTransform(const KoShape *shape) const
 {
     return m_layoutItems.value(const_cast<KoShape*>(shape))->inheritsTransform;
 }
 
 int ChartLayout::count() const
 {
     return m_layoutItems.size();
 }
 
 QList<KoShape*> ChartLayout::shapes() const
 {
     return m_layoutItems.keys();
 }
 
 void ChartLayout::setContainerRect(const QRectF &rect)
 {
     if (rect != m_containerRect) {
         m_containerRect = rect;
         scheduleRelayout();
     }
 }
 
 void ChartLayout::containerChanged(KoShapeContainer *container, KoShape::ChangeType type)
 {
     switch(type) {
         case KoShape::StrokeChanged:
         case KoShape::SizeChanged: {
             QRectF rect(QPointF(0,0), container->size());
             KoInsets insets = container->strokeInsets();
             rect.adjust(insets.left / 2., insets.top / 2., -insets.right / 2., -insets.bottom / 2.);
             setContainerRect(rect);
             break;
         }
         case KoShape::BorderChanged:
             warnChartLayout<<"Border not handled";
             break;
         default:
             break;
     }
 }
 
 bool ChartLayout::isChildLocked(const KoShape *shape) const
 {
     return shape->isGeometryProtected();
 }
 
 void ChartLayout::setItemType(const KoShape *shape, ItemType itemType)
 {
     LayoutData *data = m_layoutItems.value(const_cast<KoShape*>(shape));
     if (!data) {
         data = new LayoutData();
         m_layoutItems.insert(const_cast<KoShape*>(shape), data);
     }
     data->itemType = itemType;
 
     m_shapes.remove(m_shapes.key(const_cast<KoShape*>(shape))); // in case
     m_shapes.insert(itemType, const_cast<KoShape*>(shape));
 
     debugChartLayout<<m_shapes;
     scheduleRelayout();
 }
 
 void ChartLayout::setLayoutingEnabled(bool value)
 {
     m_layoutingEnabled = value;
 }
 
 void ChartLayout::proposeMove(KoShape *child, QPointF &move)
 {
     QRectF current = itemRect(child);
     QRectF newRect = current.adjusted(move.x(), move.y(), move.x(), move.y());
     if (newRect.left() < m_containerRect.left()) {
         move.setX(m_containerRect.left() - current.left());
     } else if (newRect.right() > m_containerRect.right()) {
         move.setX(m_containerRect.right() - current.right());
     }
     if (newRect.top() < m_containerRect.top()) {
         move.setY(m_containerRect.top() - current.top());
     } else if (newRect.bottom() > m_containerRect.bottom()) {
         move.setY(m_containerRect.bottom() - current.bottom());
     }
 }
 
 void ChartLayout::childChanged(KoShape *shape, KoShape::ChangeType type)
 {
     Q_UNUSED(shape);
 
     // Do not relayout again if we're currently in the process of a relayout.
     // Repositioning a layout item or resizing it will result in a cull of this method.
     if (m_doingLayout)
         return;
 
     // This can be fine-tuned, but right now, simply everything will be re-layouted.
     switch (type) {
     case KoShape::PositionChanged:
     case KoShape::SizeChanged:
         scheduleRelayout();
     // FIXME: There's some cases that would require relayouting but that don't make sense
     // for chart items, e.g. ShearChanged. How should these changes be avoided or handled?
     default:
         break;
     }
 }
 
 void ChartLayout::scheduleRelayout()
 {
     m_relayoutScheduled = true;
 }
 
 KChart::CartesianAxis::Position axisPosition(PlotArea *plotarea, ItemType type)
 {
     KChart::CartesianAxis::Position apos = KChart::CartesianAxis::Bottom;
     switch (type) {
         case XAxisTitleType: {
             if (plotarea && plotarea->xAxis()) {
                 apos = plotarea->xAxis()->kchartAxisPosition();
             }
             break;
         }
         case YAxisTitleType: {
             if (plotarea && plotarea->yAxis()) {
                 apos = plotarea->yAxis()->kchartAxisPosition();
             }
             break;
         }
         case SecondaryXAxisTitleType: {
             if (plotarea && plotarea->secondaryXAxis()) {
                 apos = plotarea->secondaryXAxis()->kchartAxisPosition();
             }
             break;
         }
         case SecondaryYAxisTitleType: {
             if (plotarea && plotarea->secondaryYAxis()) {
                 apos = plotarea->secondaryYAxis()->kchartAxisPosition();
             }
             break;
         }
     }
     return apos;
 }
 
 qreal ChartLayout::xOffset(const QRectF &left, const QRectF &right, bool center) const
 {
     qreal x = (left.width() + (left.width() > 0.0 ? m_spacing.x() : 0.0) - right.width() - (right.width() > 0.0 ? m_spacing.x() : 0.0));
     return center ? x / 2.0 : x;
 }
 
 qreal ChartLayout::yOffset(const QRectF &top, const QRectF &bottom, bool center) const
 {
     qreal y = (top.height() + (top.height() > 0.0 ? m_spacing.y() : 0.0) - bottom.height() - (bottom.height() > 0.0 ? m_spacing.y() : 0.0));
     return center ? y / 2.0 : y;
 }
 
 void ChartLayout::rotateAxisTitles(PlotArea *plotarea) {
     switch (plotarea->chartType()) {
         case BarChartType:
         case LineChartType:
         case AreaChartType:
         case ScatterChartType:
         case BubbleChartType:
         case StockChartType: {
             for (Axis *axis : plotarea->axes()) {
                 KoShape *title = axis->title();
                 title->rotate(-title->rotation());
                 switch (axis->kchartAxisPosition()) {
                     case KChart::CartesianAxis::Left:
                         title->rotate(-90);
                         break;
                     case KChart::CartesianAxis::Right:
                         title->rotate(90);
                         break;
                     default:
                         break;
                 }
             }
             break;
         }
         default:
             break;
     }
 }
 
 void ChartLayout::layoutAxisTitles(int pos, const QMultiMap<int, KoShape*> &map, const QRectF &rect, const QRectF plotarea) const
 {
     debugChartLayout<<pos<<rect;
     const QList<KoShape*> shapes = map.values(pos);
     if (shapes.isEmpty()) {
         return;
     }
     QRectF layoutRect = rect;
     QList<QRectF> rects;
     switch (pos) {
         case 1: // bottom
         case 3: // top
             layoutRect.adjust((plotarea.center().x() - layoutRect.center().x()) / 2., 0, 0, 0);
             for (int i = shapes.count()-1; i >= 0; --i) {
                 if (!rects.isEmpty()) {
                     layoutRect.adjust(0, rects.last().height(), 0, 0);
                 }
                 QRectF r = layoutRect;
                 QRectF itmRect = itemRect(shapes[i]);
                 r.setHeight(itmRect.height());
                 if (r.width() > itmRect.width()) {
                     qreal w = (r.width() - itmRect.width()) / 2;
                     r.adjust(w, 0, -w, 0);
                 }
                 rects.prepend(r);
             }
             for (int i = 0; i < shapes.count(); ++i) {
                 m_layoutItems[shapes[i]]->rect = rects.at(i);
                 debugChartLayout<<(pos==1?"bottom title":"top title")<<i<<':'<<dbg(shapes[i])<<rects.at(i)<<rects;
             }
             break;
         case 2: // left
         case 4: // right
             layoutRect.adjust(0, (plotarea.center().y() - layoutRect.center().y()) / 2., 0, 0);
             for (int i = shapes.count()-1; i >= 0; --i) {
                 if (!rects.isEmpty()) {
                     layoutRect.adjust(rects.first().width(), 0, 0, 0);
                 }
                 QRectF r = layoutRect;
                 QRectF itmRect = itemRect(shapes[i]);
                 r.setWidth(itemRect(shapes[i]).width());
                 if (r.height() > itmRect.height()) {
                     qreal h = (r.height() - itmRect.height()) / 2;
                     r.adjust(0, h, 0, -h);
                 }
                 rects.prepend(r);
             }
             for (int i = 0; i < shapes.count(); ++i) {
                 m_layoutItems[shapes[i]]->rect = rects.at(i);
                 debugChartLayout<<(pos==2?"left title":"right title")<<i<<':'<<dbg(shapes[i])<<rects.at(i)<<rects;
             }
             break;
     }
 }
 
 void ChartLayout::calculateLayout()
 {
     QRectF area = m_containerRect;
     area.adjust(m_padding.left, m_padding.top, -m_padding.right, -m_padding.bottom);
 
     if (area.size().width() < 0 && area.size().height() < 0) {
         debugChartLayout<<"invalid size:"<<area;
         m_doingLayout = false;
         m_relayoutScheduled = false;
         return;
     }
     debugChartLayout<<"area:"<<area<<"spacing:"<<m_spacing;
 
     PlotArea *plotarea = dynamic_cast<PlotArea*>(m_shapes.value(PlotAreaType));
     QRectF plotareaRect = area;
     if (plotarea->chartType() == BarChartType && plotarea->isVertical()) debugChartLayout<<"Vertical bar chart";
 
     QRectF titleRect;
     KoShape *title = m_shapes.value(TitleLabelType);
     if (title && title->isVisible()) {
         titleRect = itemRect(title);
     }
     QRectF subtitleRect;
     KoShape *subtitle = m_shapes.value(SubTitleLabelType);
     if (subtitle && subtitle->isVisible()) {
         subtitleRect = itemRect(subtitle);
     }
     QRectF footerRect;
     KoShape *footer = m_shapes.value(FooterLabelType);
     if (footer && footer->isVisible()) {
         footerRect = itemRect(footer);
     }
     QRectF legendRect;
     Legend *legend = dynamic_cast<Legend*>(m_shapes.value(LegendType));
     if (legend && legend->isVisible()) {
         legendRect = itemRect(legend);
         debugChartLayout<<"legend rect:"<<legendRect;
     }
 
     rotateAxisTitles(plotarea);
     // sort axis titles as bottom, left, top, right
     QMultiMap<int, KoShape*> axisTitles;
     QRectF bottomTitleRect; // 1
     QRectF leftTitleRect; // 2
     QRectF topTitleRect; // 3
     QRectF rightTitleRect; // 4
 
     KoShape *xtitle = m_shapes.value(XAxisTitleType);
     if (xtitle && xtitle->isVisible()) {
         switch (axisPosition(plotarea, XAxisTitleType)) {
             case KChart::CartesianAxis::Bottom: {
                 QRectF r = itemRect(xtitle);
                 if (bottomTitleRect.isNull()) {
                     bottomTitleRect = r;
                 } else {
                     if (bottomTitleRect.width() < r.width()) {
                         bottomTitleRect.setWidth(r.width());
                     }
                     bottomTitleRect.setHeight(bottomTitleRect.height() + r.height());
                 }
                 axisTitles.insert(1, xtitle);
                 break;
             }
             case KChart::CartesianAxis::Left: {
                 QRectF r = itemRect(xtitle);
                 if (leftTitleRect.isNull()) {
                     leftTitleRect = r;
                 } else {
                     leftTitleRect.setWidth(leftTitleRect.width() + r.width());
                     if (leftTitleRect.height() < r.height()) {
                         leftTitleRect.setHeight(r.height());
                     }
                 }
                 axisTitles.insert(2, xtitle);
                 break;
             }
             case KChart::CartesianAxis::Top: {
                 QRectF r = itemRect(xtitle);
                 if (topTitleRect.isNull()) {
                     topTitleRect = r;
                 } else {
                     if (topTitleRect.width() < r.width()) {
                         topTitleRect.setWidth(r.width());
                     }
                     topTitleRect.setHeight(topTitleRect.height() + r.height());
                 }
                 axisTitles.insert(3, xtitle);
                 break;
             }
             case KChart::CartesianAxis::Right: {
                 QRectF r = itemRect(xtitle);
                 if (rightTitleRect.isNull()) {
                     rightTitleRect = r;
                 } else {
                     rightTitleRect.setWidth(rightTitleRect.width() + r.width());
                     if (rightTitleRect.height() < r.height()) {
                         rightTitleRect.setHeight(r.height());
                     }
                 }
                 axisTitles.insert(4, xtitle);
                 break;
             }
         }
     }
     KoShape *ytitle = m_shapes.value(YAxisTitleType);
     if (ytitle && ytitle->isVisible()) {
         switch (axisPosition(plotarea, YAxisTitleType)) {
             case KChart::CartesianAxis::Bottom: {
                 QRectF r = itemRect(ytitle);
                 if (bottomTitleRect.isNull()) {
                     bottomTitleRect = r;
                 } else {
                     if (bottomTitleRect.width() < r.width()) {
                         bottomTitleRect.setWidth(r.width());
                     }
                     bottomTitleRect.setHeight(bottomTitleRect.height() + r.height());
                 }
                 axisTitles.insert(1, ytitle);
                 break;
             }
             case KChart::CartesianAxis::Left: {
                 QRectF r = itemRect(ytitle);
                 if (leftTitleRect.isNull()) {
                     leftTitleRect = r;
                 } else {
                     leftTitleRect.setWidth(leftTitleRect.width() + r.width());
                     if (leftTitleRect.height() < r.height()) {
                         leftTitleRect.setHeight(r.height());
                     }
                 }
                 axisTitles.insert(2, ytitle);
                 break;
             }
             case KChart::CartesianAxis::Top: {
                 QRectF r = itemRect(ytitle);
                 if (topTitleRect.isNull()) {
                     topTitleRect = r;
                 } else {
                     if (topTitleRect.width() < r.width()) {
                         topTitleRect.setWidth(r.width());
                     }
                     topTitleRect.setHeight(topTitleRect.height() + r.height());
                 }
                 axisTitles.insert(3, ytitle);
                 break;
             }
             case KChart::CartesianAxis::Right: {
                 QRectF r = itemRect(ytitle);
                 if (rightTitleRect.isNull()) {
                     rightTitleRect = r;
                 } else {
                     rightTitleRect.setWidth(rightTitleRect.width() + r.width());
                     if (rightTitleRect.height() < r.height()) {
                         rightTitleRect.setHeight(r.height());
                     }
                 }
                 axisTitles.insert(4, ytitle);
                 break;
             }
         }
     }
     KoShape *sxtitle = m_shapes.value(SecondaryXAxisTitleType);
     debugChartLayout<<sxtitle<<(sxtitle && sxtitle->isVisible())<<SecondaryXAxisTitleType;
     if (sxtitle && sxtitle->isVisible()) {
         switch (axisPosition(plotarea, SecondaryXAxisTitleType)) {
             case KChart::CartesianAxis::Bottom: {
                 QRectF r = itemRect(sxtitle);
                 if (bottomTitleRect.isNull()) {
                     bottomTitleRect = r;
                 } else {
                     if (bottomTitleRect.width() < r.width()) {
                         bottomTitleRect.setWidth(r.width());
                     }
                     bottomTitleRect.setHeight(bottomTitleRect.height() + r.height());
                 }
                 axisTitles.insert(1, sxtitle);
                 break;
             }
             case KChart::CartesianAxis::Left: {
                 QRectF r = itemRect(sxtitle);
                 if (leftTitleRect.isNull()) {
                     leftTitleRect = r;
                 } else {
                     leftTitleRect.setWidth(leftTitleRect.width() + r.width());
                     if (leftTitleRect.height() < r.height()) {
                         leftTitleRect.setHeight(r.height());
                     }
                 }
                 axisTitles.insert(2, sxtitle);
                 break;
             }
             case KChart::CartesianAxis::Top: {
                 QRectF r = itemRect(sxtitle);
                 if (topTitleRect.isNull()) {
                     topTitleRect = r;
                 } else {
                     if (topTitleRect.width() < r.width()) {
                         topTitleRect.setWidth(r.width());
                     }
                     topTitleRect.setHeight(topTitleRect.height() + r.height());
                 }
                 axisTitles.insert(3, sxtitle);
                 break;
             }
             case KChart::CartesianAxis::Right: {
                 QRectF r = itemRect(sxtitle);
                 if (rightTitleRect.isNull()) {
                     rightTitleRect = r;
                 } else {
                     rightTitleRect.setWidth(rightTitleRect.width() + r.width());
                     if (rightTitleRect.height() < r.height()) {
                         rightTitleRect.setHeight(r.height());
                     }
                 }
                 axisTitles.insert(4, sxtitle);
                 break;
             }
         }
     }
     KoShape *sytitle = m_shapes.value(SecondaryYAxisTitleType);
     if (sytitle && sytitle->isVisible()) {
         switch (axisPosition(plotarea, SecondaryYAxisTitleType)) {
             case KChart::CartesianAxis::Bottom: {
                 QRectF r = itemRect(sytitle);
                 if (bottomTitleRect.isNull()) {
                     bottomTitleRect = r;
                 } else {
                     if (bottomTitleRect.width() < r.width()) {
                         bottomTitleRect.setWidth(r.width());
                     }
                     bottomTitleRect.setHeight(bottomTitleRect.height() + r.height());
                 }
                 axisTitles.insert(1, sytitle);
                 break;
             }
             case KChart::CartesianAxis::Left: {
                 QRectF r = itemRect(sytitle);
                 if (leftTitleRect.isNull()) {
                     leftTitleRect = r;
                 } else {
                     leftTitleRect.setWidth(leftTitleRect.width() + r.width());
                     if (leftTitleRect.height() < r.height()) {
                         leftTitleRect.setHeight(r.height());
                     }
                 }
                 axisTitles.insert(2, sytitle);
                 break;
             }
             case KChart::CartesianAxis::Top: {
                 QRectF r = itemRect(sytitle);
                 if (topTitleRect.isNull()) {
                     topTitleRect = r;
                 } else {
                     if (topTitleRect.width() < r.width()) {
                         topTitleRect.setWidth(r.width());
                     }
                     topTitleRect.setHeight(topTitleRect.height() + r.height());
                 }
                 axisTitles.insert(3, sytitle);
                 break;
             }
             case KChart::CartesianAxis::Right: {
                 QRectF r = itemRect(sytitle);
                 if (rightTitleRect.isNull()) {
                     rightTitleRect = r;
                 } else {
                     rightTitleRect.setWidth(rightTitleRect.width() + r.width());
                     if (rightTitleRect.height() < r.height()) {
                         rightTitleRect.setHeight(r.height());
                     }
                 }
                 axisTitles.insert(4, sytitle);
                 break;
             }
         }
     }
 
 
     QPointF topcenter(area.center().x(), area.top());
     QPointF bottomcenter(area.center().x(), area.bottom());
     QPointF leftcenter(area.left(), area.center().y());
     QPointF rightcenter(area.right(), area.center().y());
 
     debugChartLayout<<"left:"<<leftcenter<<"right:"<<rightcenter<<"top:"<<topcenter<<"bottom:"<<bottomcenter;
 
     // title/subtitle/footer is aligned with container
     if (!titleRect.isNull()) {
         if (autoPosition(title)) {
             titleRect.moveLeft(topcenter.x() - titleRect.width() / 2.0);
             titleRect.moveTop(topcenter.y());
         }
         topcenter.setY(titleRect.bottom() + m_spacing.y());
         debugChartLayout<<"title: auto:"<<autoPosition(title)<<titleRect;
     }
     if (!subtitleRect.isNull()) {
         if (autoPosition(subtitle)) {
             subtitleRect.moveLeft(topcenter.x() - subtitleRect.width() / 2.0);
             subtitleRect.moveTop(topcenter.y());
         }
         topcenter.setY(subtitleRect.bottom() + m_spacing.y());
         debugChartLayout<<"subtitle:"<<subtitleRect;
     }
     if (!footerRect.isNull()) {
         if (autoPosition(footer)) {
             footerRect.moveLeft(bottomcenter.x() - footerRect.width() / 2.0);
             footerRect.moveBottom(bottomcenter.y());
         }
         bottomcenter.setY(footerRect.top() - m_spacing.y());
         debugChartLayout<<"footer:"<<footerRect;
     }
 
     // all items below shall be aligned with the *final* plot area
     plotareaRect.setLeft(leftcenter.x());
     plotareaRect.setTop(topcenter.y());
     plotareaRect.setRight(rightcenter.x());
     plotareaRect.setBottom(bottomcenter.y());
 
     if (!legendRect.isNull()) {
         // Legend is aligned with plot area so axis titles may resize plot area
         switch (legend->legendPosition()) {
             case StartPosition:
                 switch(legend->alignment()) {
                     case Qt::AlignLeft: {
                         // Align at top of the area to the left of plot area
                         qreal offset = yOffset(topTitleRect, QRectF());
                         legendRect.moveTop(plotareaRect.top() + offset);
                         break;
                     }
                     case Qt::AlignCenter: {
                         qreal centerOffset = yOffset(topTitleRect, bottomTitleRect, true);
                         legendRect.moveTop(plotareaRect.center().y() + centerOffset - legendRect.height() / 2.0);
                         break;
                     }
                     case Qt::AlignRight: {
                         // Align at bottom of the area to the left of plot area
                         qreal offset = yOffset(QRectF(), bottomTitleRect);
                         legendRect.moveBottom(plotareaRect.bottom() + offset);
                         break;
                     }
                 }
                 legendRect.moveLeft(plotareaRect.left());
                 plotareaRect.setLeft(legendRect.right() + m_spacing.x());
                 break;
             case TopPosition:
                 switch(legend->alignment()) {
                     case Qt::AlignLeft: {
                         // Align at left of the area on top of plot area
                         qreal offset = xOffset(leftTitleRect, QRectF());
                         legendRect.moveLeft(plotareaRect.left() + offset);
                         break;
                     }
                     case Qt::AlignCenter: {
                         qreal centerOffset = xOffset(leftTitleRect, rightTitleRect, true);
                         legendRect.moveLeft(plotareaRect.center().x() + centerOffset - legendRect.width() / 2.0);
                         debugChartLayout<<"legend top/center:"<<"to"<<legendRect.left()<<"coffs="<<centerOffset<<"h/2"<<(legendRect.height()/2.0);
                         break;
                     }
                     case Qt::AlignRight: {
                         // Align at right of the area on top of plot area
                         qreal offset = xOffset(QRectF(), rightTitleRect);
                         legendRect.moveRight(plotareaRect.right() + offset);
                         break;
                     }
                 }
                 legendRect.moveTop(plotareaRect.top());
                 plotareaRect.setTop(legendRect.bottom() + m_spacing.y());
                 break;
             case EndPosition:
                 switch(legend->alignment()) {
                     case Qt::AlignLeft: {
                         // Align at top of the area right of plot area
                         qreal offset = yOffset(topTitleRect, QRectF());
                         legendRect.moveTop(plotareaRect.top() + offset);
                         debugChartLayout<<"legend end/top:"<<"to"<<legendRect.top()<<"offs="<<offset;
                         break;
                     }
                     case Qt::AlignCenter: {
                         qreal centerOffset = yOffset(topTitleRect, bottomTitleRect, true);
                         legendRect.moveTop(plotareaRect.center().y() + centerOffset - legendRect.height() / 2.0);
                         debugChartLayout<<"legend end/center:"<<"to"<<legendRect.top()<<"coffs="<<centerOffset<<"h/2"<<(legendRect.height()/2.0)<<"pa:"<<plotareaRect.center().y();
                         break;
                     }
                     case Qt::AlignRight: {
                         // Align at bottom of the area right of plot area
                         qreal offset = yOffset(QRectF(), bottomTitleRect);
                         legendRect.moveBottom(plotareaRect.bottom() + offset);
                         debugChartLayout<<"legend end/bottom:"<<"to"<<legendRect.bottom()<<"offs="<<offset;
                         break;
                     }
                 }
                 legendRect.moveRight(plotareaRect.right());
                 plotareaRect.setRight(legendRect.left() - m_spacing.x());
                 debugChartLayout<<"legend end:"<<legendRect;
                 break;
             case BottomPosition:
                 switch(legend->alignment()) {
                     case Qt::AlignLeft: {
                         // Align at left of the area below of plot area
                         qreal offset = xOffset(leftTitleRect, QRectF());
                         legendRect.moveLeft(plotareaRect.left() + offset);
                         break;
                     }
                     case Qt::AlignCenter: {
                         qreal centerOffset = xOffset(leftTitleRect, rightTitleRect, true);
                         legendRect.moveLeft(bottomcenter.x() + centerOffset - legendRect.width() / 2.0);
                         break;
                     }
                     case Qt::AlignRight: {
                         // Align at right of the area on below plot area
                         qreal offset = xOffset(QRectF(), rightTitleRect);
                         legendRect.moveRight(plotareaRect.right() + offset);
                         break;
                     }
                 }
                 legendRect.moveBottom(plotareaRect.bottom());
                 plotareaRect.setBottom(legendRect.top() - m_spacing.y());
                 break;
             case TopStartPosition: {
                 qreal xoffset = xOffset(leftTitleRect, QRectF());
                 qreal yoffset = yOffset(topTitleRect, QRectF());
                 legendRect.moveTopLeft(area.topLeft());
                 if (legendRect.right() + m_spacing.x() - xoffset > plotareaRect.left()) {
                     plotareaRect.setLeft(legendRect.right() + m_spacing.x() - xoffset);
                 }
                 if (legendRect.bottom() + m_spacing.y() - yoffset > plotareaRect.top()) {
                     plotareaRect.setTop(legendRect.bottom() + m_spacing.y() - yoffset);
                 }
                 debugChartLayout<<"legend top/start"<<legendRect<<plotareaRect<<"xo:"<<xoffset<<"yo:"<<yoffset;
                 break;
             }
             case TopEndPosition: {
                 qreal xoffset = xOffset(QRectF(), rightTitleRect);
                 qreal yoffset = yOffset(topTitleRect, QRectF());
                 legendRect.moveTopRight(area.topRight());
                 if (legendRect.left() - m_spacing.x() + xoffset < plotareaRect.right()) {
                     plotareaRect.setRight(legendRect.left() - m_spacing.x() + xoffset);
                 }
                 if (legendRect.bottom() + m_spacing.y() - yoffset > plotareaRect.top()) {
                     plotareaRect.setTop(legendRect.bottom() + m_spacing.y() - yoffset);
                 }
                 debugChartLayout<<"legend top/end"<<legendRect<<plotareaRect;
                 break;
             }
             case BottomStartPosition: {
                 qreal xoffset = xOffset(leftTitleRect, QRectF());
                 qreal yoffset = yOffset(QRectF(), bottomTitleRect);
                 legendRect.moveBottomLeft(area.bottomLeft());
                 if (legendRect.right() + m_spacing.x() - xoffset > plotareaRect.left()) {
                     plotareaRect.setLeft(legendRect.right() + m_spacing.x() - xoffset);
                 }
                 if (legendRect.top() - m_spacing.y() + yoffset < plotareaRect.bottom()) {
                     plotareaRect.setBottom(legendRect.top() - m_spacing.y() - yoffset);
                 }
                 debugChartLayout<<"legend bottom/start"<<legendRect<<plotareaRect<<"offs:"<<xoffset<<','<<yoffset;
                 break;
             }
             case BottomEndPosition: {
                 qreal xoffset = xOffset(QRectF(), rightTitleRect);
                 qreal yoffset = yOffset(QRectF(), bottomTitleRect);
                 legendRect.moveBottomRight(area.bottomRight());
                 if (legendRect.left() - m_spacing.x() + xoffset < plotareaRect.right()) {
                     plotareaRect.setRight(legendRect.left() - m_spacing.x() + xoffset);
                 }
                 if (legendRect.top() - m_spacing.y() + yoffset < plotareaRect.bottom()) {
                     plotareaRect.setBottom(legendRect.top() - m_spacing.y() - yoffset);
                 }
                 debugChartLayout<<"legend bottom/end"<<legendRect<<plotareaRect;
                 break;
             }
             default:
                 if (plotarea) {
                     // try to be backwards compatible with loaded shapes
                     QRectF pr = itemRect(plotarea); // use actual plotarea rect here
                     debugChartLayout<<"legend:"<<legendRect<<"plot:"<<pr<<legendRect.intersects(pr);
                     if (!legendRect.intersects(pr) && legendRect.intersects(plotareaRect)) {
                         if (legendRect.right() < pr.left()) {
                             plotareaRect.setLeft(qMax(plotareaRect.left(), legendRect.right() + m_spacing.x()));
                         } else if (legendRect.left() > pr.right()) {
                             plotareaRect.setRight(qMin(plotareaRect.right(), legendRect.left() - m_spacing.x()));
                         } else if (legendRect.bottom() < pr.top()) {
                             plotareaRect.setTop(qMax(plotareaRect.top(), legendRect.bottom() + m_spacing.y()));
                         } else if (legendRect.top() > pr.bottom()) {
                             plotareaRect.setBottom(qMin(plotareaRect.bottom(), legendRect.top() - m_spacing.y()));
                         }
                         debugChartLayout<<"legend manual:"<<legendRect<<"plot moved to:"<<plotareaRect;
                     }
                 }
                 break;
         }
         debugChartLayout<<"legend:"<<legendRect<<"pos:"<<legend->legendPosition()<<"align:"<<legend->alignment();
     }
 
     debugChartLayout<<"axis titles:"<<axisTitles;
     if (!leftTitleRect.isNull()) {
         qreal centerOffset = yOffset(topTitleRect, bottomTitleRect, true);
         leftTitleRect.moveTop(plotareaRect.center().y() + centerOffset - leftTitleRect.height() / 2.0);
         leftTitleRect.moveLeft(plotareaRect.left());
         debugChartLayout<<"left axis:"<<leftTitleRect;
     }
     if (!rightTitleRect.isNull()) {
         qreal centerOffset = yOffset(topTitleRect, bottomTitleRect, true);
         rightTitleRect.moveTop(plotareaRect.center().y() + centerOffset - rightTitleRect.height() / 2.0);
         rightTitleRect.moveRight(plotareaRect.right());
         debugChartLayout<<"right axis:"<<rightTitleRect;
     }
     if (!topTitleRect.isNull()) {
         qreal centerOffset = xOffset(leftTitleRect, rightTitleRect, true);
         topTitleRect.moveLeft(plotareaRect.center().x() + centerOffset - topTitleRect.width() / 2.0);
         topTitleRect.moveTop(plotareaRect.top());
         debugChartLayout<<"top axis:"<<topTitleRect;
     }
     if (!bottomTitleRect.isNull()) {
         qreal centerOffset = xOffset(leftTitleRect, rightTitleRect, true);
         bottomTitleRect.moveLeft(plotareaRect.center().x() + centerOffset - bottomTitleRect.width() / 2.0);
         bottomTitleRect.moveBottom(plotareaRect.bottom());
         debugChartLayout<<"bottom axis:"<<bottomTitleRect;
     }
     // now resize plot area
     if (!leftTitleRect.isNull()) {
         plotareaRect.setLeft(leftTitleRect.right() + m_spacing.x());
     }
     if (!rightTitleRect.isNull()) {
         plotareaRect.setRight(rightTitleRect.left() - m_spacing.x());
     }
     if (!topTitleRect.isNull()) {
         plotareaRect.setTop(topTitleRect.bottom() + m_spacing.y());
     }
     if (!bottomTitleRect.isNull()) {
         plotareaRect.setBottom(bottomTitleRect.top() - m_spacing.y());
     }
     if (title && title->isVisible()) {
         m_layoutItems[title]->rect = titleRect;
         debugChartLayout<<"title"<<dbg(title)<<titleRect;
     }
     if (subtitle && subtitle->isVisible()) {
         m_layoutItems[subtitle]->rect = subtitleRect;
         debugChartLayout<<"subtitle"<<dbg(subtitle)<<subtitleRect;
     }
     if (footer && footer->isVisible()) {
         m_layoutItems[footer]->rect = footerRect;
         debugChartLayout<<"footer"<<dbg(footer)<<footerRect;
     }
     if (legend && legend->isVisible()) {
         m_layoutItems[legend]->rect = legendRect;
         debugChartLayout<<"legend"<<dbg(legend)<<legendRect<<legendRect.center();
     }
 
     layoutAxisTitles(1, axisTitles, bottomTitleRect, plotareaRect);
     layoutAxisTitles(2, axisTitles, leftTitleRect, plotareaRect);
     layoutAxisTitles(3, axisTitles, topTitleRect, plotareaRect);
     layoutAxisTitles(4, axisTitles, rightTitleRect, plotareaRect);
 
     if (plotarea && plotarea->isVisible()) {
         m_layoutItems[plotarea]->rect = plotareaRect;
         debugChartLayout<<"plot area"<<dbg(plotarea)<<plotareaRect<<plotareaRect.center();
     }
 }
 
 void ChartLayout::layout()
 {
     Q_ASSERT(!m_doingLayout);
 
     if (!m_layoutingEnabled || !m_relayoutScheduled) {
         return;
     }
     m_doingLayout = true;
 
     calculateLayout();
     QMap<KoShape*, LayoutData*>::const_iterator it;
     for (it = m_layoutItems.constBegin(); it != m_layoutItems.constEnd(); ++it) {
         if (it.key()->isVisible()) {
             setItemPosition(it.key(), it.value()->rect.topLeft());
             debugChartLayout<<dbg(it.key())<<it.value()->rect.topLeft()<<itemPosition(it.key());
             if (it.value()->itemType == PlotAreaType) {
                 setItemSize(it.key(), it.value()->rect.size());
                 debugChartLayout<<dbg(it.key())<<it.value()->rect.size()<<itemSize(it.key());
             }
         }
     }
     m_doingLayout = false;
     m_relayoutScheduled = false;
 }
 
 
 void ChartLayout::setPadding(const KoInsets &padding)
 {
     m_padding = padding;
     scheduleRelayout();
 }
 
 KoInsets ChartLayout::padding() const
 {
     return m_padding;
 }
 
 void ChartLayout::setSpacing(qreal hSpacing, qreal vSpacing)
 {
     m_spacing = QPointF(hSpacing, vSpacing);
 }
 
 QPointF ChartLayout::spacing() const
 {
     return m_spacing;
 }
 
 /*static*/ QPointF ChartLayout::itemPosition(const KoShape *shape)
 {
     const QRectF boundingRect = QRectF(QPointF(0, 0), shape->size());
     return shape->transformation().mapRect(boundingRect).topLeft();
 }
 
 /*static*/ QSizeF ChartLayout::itemSize(const KoShape *shape)
 {
     const QRectF boundingRect = QRectF(QPointF(0, 0), shape->size());
     return shape->transformation().mapRect(boundingRect).size();
 }
 
 /*static*/ void ChartLayout::setItemSize(KoShape *shape, const QSizeF &size)
 {
     shape->setSize(size);
 }
 
 /*static*/ QRectF ChartLayout::itemRect(const KoShape *shape)
 {
     const QRectF boundingRect = QRectF(itemPosition(shape), itemSize(shape));
     return boundingRect;
 }
 
 /*static*/ void ChartLayout::setItemPosition(KoShape *shape, const QPointF& pos)
 {
     const QPointF offset =  shape->position() - itemPosition(shape);
     shape->setPosition(pos + offset);
 }
 
 QRectF ChartLayout::diagramArea(const KoShape *shape)
 {
     return diagramArea(shape, itemRect(shape));
 }
 
 // FIXME: Get the actual plot area ex axis labels from KChart
 QRectF ChartLayout::diagramArea(const KoShape *shape, const QRectF &rect)
 {
     const PlotArea* plotArea = dynamic_cast<const PlotArea*>(shape);
     if (!plotArea) {
         return rect;
     }
     qreal bottom = 0.0;
     qreal left = 0.0;
     qreal top = 0.0;
     qreal right = 0.0;
     // HACK: KChart has some spacing between axis and label
     qreal xspace = ScreenConversions::pxToPtX(6.0) * 2.0;
     qreal yspace = ScreenConversions::pxToPtY(6.0) * 2.0;
     if (plotArea->xAxis() && plotArea->xAxis()->showLabels()) {
         bottom = plotArea->xAxis()->fontSize();
         bottom += yspace;
     }
     if (plotArea->yAxis() && plotArea->yAxis()->showLabels()) {
         left = plotArea->yAxis()->fontSize();
         left += xspace;
     }
     if (plotArea->secondaryXAxis() && plotArea->secondaryXAxis()->showLabels()) {
         top = plotArea->secondaryXAxis()->fontSize();
         top += yspace;
     }
     if (plotArea->secondaryYAxis() && plotArea->secondaryYAxis()->showLabels()) {
         right = plotArea->secondaryYAxis()->fontSize();
         right += xspace;
     }
     return rect.adjusted(left, top, -right, -bottom);
 }
 
 QString ChartLayout::dbg(const KoShape *shape) const
 {
     QString s;
     LayoutData *data = m_layoutItems[const_cast<KoShape*>(shape)];
     switch(data->itemType) {
         case GenericItemType: s = "KoShape[Generic:"+ shape->shapeId() + "]"; break;
         case TitleLabelType: s = "KoShape[ChartTitle]"; break;
         case SubTitleLabelType: s = "KoShape[ChartSubTitle]"; break;
         case FooterLabelType: s = "KoShape[ChartFooter]"; break;
         case PlotAreaType: s = "KoShape[PlotArea]"; break;
         case LegendType:
             s = "KoShape[Legend";
             switch(static_cast<const Legend*>(shape)->alignment()) {
                 case Qt::AlignLeft: s += ":Start"; break;
                 case Qt::AlignCenter: s += ":Center"; break;
                 case Qt::AlignRight: s += ":End"; break;
                 default: s += ":Float"; break;
             }
             s += ']';
             break;
         case XAxisTitleType: s = "KoShape[XAxisTitle]"; break;
         case YAxisTitleType: s = "KoShape[YAxisTitle]"; break;
         case SecondaryXAxisTitleType: s = "KoShape[SXAxisTitle]"; break;
         case SecondaryYAxisTitleType: s = "KoShape[SYAxisTitle]"; break;
         default: s = "KoShape[Unknown]"; break;
     }
     return s;
 }
 
 QString ChartLayout::dbg(const QList<KoShape*> &shapes) const
 {
     QString s = "(";
     for (int i = 0; i < shapes.count(); ++i) {
         if (i > 0) s += ',';
         s += dbg(shapes.at(i));
     }
     s += ')';
     return s;
 }