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-rw-r--r--src/axis/horizontalaxis.cpp225
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diff --git a/src/axis/horizontalaxis.cpp b/src/axis/horizontalaxis.cpp
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--- a/src/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>
-
-QTCOMMERCIALCHART_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(), "...").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(), "...");
- 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;
-}
-
-QTCOMMERCIALCHART_END_NAMESPACE
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