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diff --git a/src/charts/axis/horizontalaxis.cpp b/src/charts/axis/horizontalaxis.cpp
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+/****************************************************************************
+**
+** Copyright (C) 2014 Digia Plc
+** All rights reserved.
+** For any questions to Digia, please use contact form at http://qt.digia.com
+**
+** This file is part of the Qt Enterprise Charts Add-on.
+**
+** $QT_BEGIN_LICENSE$
+** Licensees holding valid Qt Enterprise licenses may use this file in
+** accordance with the Qt Enterprise License Agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and Digia.
+**
+** If you have questions regarding the use of this file, please use
+** contact form at http://qt.digia.com
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "horizontalaxis_p.h"
+#include "qabstractaxis_p.h"
+#include "chartpresenter_p.h"
+#include <qmath.h>
+#include <QDebug>
+
+QT_CHARTS_BEGIN_NAMESPACE
+
+HorizontalAxis::HorizontalAxis(QAbstractAxis *axis, QGraphicsItem *item, bool intervalAxis)
+ : CartesianChartAxis(axis, item, intervalAxis)
+{
+}
+
+HorizontalAxis::~HorizontalAxis()
+{
+}
+
+void HorizontalAxis::updateGeometry()
+{
+ const QVector<qreal> &layout = ChartAxisElement::layout();
+
+ if (layout.isEmpty())
+ return;
+
+ QStringList labelList = labels();
+
+ QList<QGraphicsItem *> lines = gridItems();
+ QList<QGraphicsItem *> labels = labelItems();
+ QList<QGraphicsItem *> shades = shadeItems();
+ QList<QGraphicsItem *> arrow = arrowItems();
+ QGraphicsTextItem *title = titleItem();
+
+ Q_ASSERT(labels.size() == labelList.size());
+ Q_ASSERT(layout.size() == labelList.size());
+
+ const QRectF &axisRect = axisGeometry();
+ const QRectF &gridRect = gridGeometry();
+
+ //arrow
+ QGraphicsLineItem *arrowItem = static_cast<QGraphicsLineItem *>(arrow.at(0));
+
+ if (axis()->alignment() == Qt::AlignTop)
+ arrowItem->setLine(gridRect.left(), axisRect.bottom(), gridRect.right(), axisRect.bottom());
+ else if (axis()->alignment() == Qt::AlignBottom)
+ arrowItem->setLine(gridRect.left(), axisRect.top(), gridRect.right(), axisRect.top());
+
+ qreal width = 0;
+ const QLatin1String ellipsis("...");
+
+ //title
+ QRectF titleBoundingRect;
+ QString titleText = axis()->titleText();
+ qreal availableSpace = axisRect.height() - labelPadding();
+ if (!titleText.isEmpty() && titleItem()->isVisible()) {
+ availableSpace -= titlePadding() * 2.0;
+ qreal minimumLabelHeight = ChartPresenter::textBoundingRect(axis()->labelsFont(),
+ QStringLiteral("...")).height();
+ qreal titleSpace = availableSpace - minimumLabelHeight;
+ title->setHtml(ChartPresenter::truncatedText(axis()->titleFont(), titleText, qreal(0.0),
+ gridRect.width(), titleSpace,
+ titleBoundingRect));
+ title->setTextWidth(titleBoundingRect.width());
+
+ titleBoundingRect = title->boundingRect();
+
+ QPointF center = gridRect.center() - titleBoundingRect.center();
+ if (axis()->alignment() == Qt::AlignTop)
+ title->setPos(center.x(), axisRect.top() + titlePadding());
+ else if (axis()->alignment() == Qt::AlignBottom)
+ title->setPos(center.x(), axisRect.bottom() - titleBoundingRect.height() - titlePadding());
+
+ availableSpace -= titleBoundingRect.height();
+ }
+
+ for (int i = 0; i < layout.size(); ++i) {
+ //items
+ QGraphicsLineItem *gridItem = static_cast<QGraphicsLineItem*>(lines.at(i));
+ QGraphicsLineItem *tickItem = static_cast<QGraphicsLineItem*>(arrow.at(i + 1));
+ QGraphicsTextItem *labelItem = static_cast<QGraphicsTextItem *>(labels.at(i));
+
+ //grid line
+ gridItem->setLine(layout[i], gridRect.top(), layout[i], gridRect.bottom());
+
+ //label text wrapping
+ QString text = labelList.at(i);
+ QRectF boundingRect;
+ // don't truncate empty labels
+ if (text.isEmpty()) {
+ labelItem->setHtml(text);
+ } else {
+ qreal labelWidth = axisRect.width() / layout.count() - (2 * labelPadding());
+ QString truncatedText = ChartPresenter::truncatedText(axis()->labelsFont(), text,
+ axis()->labelsAngle(),
+ labelWidth,
+ availableSpace, boundingRect);
+ labelItem->setTextWidth(ChartPresenter::textBoundingRect(axis()->labelsFont(),
+ truncatedText).width());
+ labelItem->setHtml(truncatedText);
+ }
+
+ //label transformation origin point
+ const QRectF& rect = labelItem->boundingRect();
+ QPointF center = rect.center();
+ labelItem->setTransformOriginPoint(center.x(), center.y());
+ qreal heightDiff = rect.height() - boundingRect.height();
+ qreal widthDiff = rect.width() - boundingRect.width();
+
+ //ticks and label position
+ if (axis()->alignment() == Qt::AlignTop) {
+ labelItem->setPos(layout[i] - center.x(), axisRect.bottom() - rect.height() + (heightDiff / 2.0) - labelPadding());
+ tickItem->setLine(layout[i], axisRect.bottom(), layout[i], axisRect.bottom() - labelPadding());
+ } else if (axis()->alignment() == Qt::AlignBottom) {
+ labelItem->setPos(layout[i] - center.x(), axisRect.top() - (heightDiff / 2.0) + labelPadding());
+ tickItem->setLine(layout[i], axisRect.top(), layout[i], axisRect.top() + labelPadding());
+ }
+
+ //label in between
+ bool forceHide = false;
+ if (intervalAxis() && (i + 1) != layout.size()) {
+ qreal leftBound = qMax(layout[i], gridRect.left());
+ qreal rightBound = qMin(layout[i + 1], gridRect.right());
+ const qreal delta = rightBound - leftBound;
+ // Hide label in case visible part of the category at the grid edge is too narrow
+ if (delta < boundingRect.width()
+ && (leftBound == gridRect.left() || rightBound == gridRect.right())
+ && !intervalAxis()) {
+ forceHide = true;
+ } else {
+ labelItem->setPos(leftBound + (delta / 2.0) - center.x(), labelItem->pos().y());
+ }
+ }
+
+ //label overlap detection - compensate one pixel for rounding errors
+ if ((labelItem->pos().x() < width && labelItem->toPlainText() == ellipsis) || forceHide ||
+ (labelItem->pos().x() + (widthDiff / 2.0)) < (axisRect.left() - 1.0) ||
+ (labelItem->pos().x() + (widthDiff / 2.0) - 1.0) > axisRect.right()) {
+ labelItem->setVisible(false);
+ } else {
+ labelItem->setVisible(true);
+ width = boundingRect.width() + labelItem->pos().x();
+ }
+
+ //shades
+ if ((i + 1) % 2 && i > 1) {
+ QGraphicsRectItem *rectItem = static_cast<QGraphicsRectItem *>(shades.at(i / 2 - 1));
+ qreal leftBound = qMax(layout[i - 1], gridRect.left());
+ qreal rightBound = qMin(layout[i], gridRect.right());
+ rectItem->setRect(leftBound, gridRect.top(), rightBound - leftBound, gridRect.height());
+ if (rectItem->rect().width() <= 0.0)
+ rectItem->setVisible(false);
+ else
+ rectItem->setVisible(true);
+ }
+
+ // check if the grid line and the axis tick should be shown
+ qreal x = gridItem->line().p1().x();
+ if (x < gridRect.left() || x > gridRect.right()) {
+ gridItem->setVisible(false);
+ tickItem->setVisible(false);
+ } else {
+ gridItem->setVisible(true);
+ tickItem->setVisible(true);
+ }
+
+ }
+
+ //begin/end grid line in case labels between
+ if (intervalAxis()) {
+ QGraphicsLineItem *gridLine;
+ gridLine = static_cast<QGraphicsLineItem *>(lines.at(layout.size()));
+ gridLine->setLine(gridRect.right(), gridRect.top(), gridRect.right(), gridRect.bottom());
+ gridLine->setVisible(true);
+ gridLine = static_cast<QGraphicsLineItem*>(lines.at(layout.size()+1));
+ gridLine->setLine(gridRect.left(), gridRect.top(), gridRect.left(), gridRect.bottom());
+ gridLine->setVisible(true);
+ }
+}
+
+QSizeF HorizontalAxis::sizeHint(Qt::SizeHint which, const QSizeF &constraint) const
+{
+ Q_UNUSED(constraint);
+ QSizeF sh(0,0);
+
+ if (axis()->titleText().isEmpty() || !titleItem()->isVisible())
+ return sh;
+
+ switch (which) {
+ case Qt::MinimumSize: {
+ QRectF titleRect = ChartPresenter::textBoundingRect(axis()->titleFont(),
+ QStringLiteral("..."));
+ sh = QSizeF(titleRect.width(), titleRect.height() + (titlePadding() * 2.0));
+ break;
+ }
+ case Qt::MaximumSize:
+ case Qt::PreferredSize: {
+ QRectF titleRect = ChartPresenter::textBoundingRect(axis()->titleFont(), axis()->titleText());
+ sh = QSizeF(titleRect.width(), titleRect.height() + (titlePadding() * 2.0));
+ break;
+ }
+ default:
+ break;
+ }
+
+ return sh;
+}
+
+QT_CHARTS_END_NAMESPACE