1 files changed, 130 insertions, 0 deletions
diff --git a/src/charts/axis/valueaxis/chartvalueaxisy.cpp b/src/charts/axis/valueaxis/chartvalueaxisy.cpp
new file mode 100644
index 00000000..d6b7c651
--- /dev/null
+++ b/src/charts/axis/valueaxis/chartvalueaxisy.cpp
@@ -0,0 +1,130 @@
+/****************************************************************************
+**
+** 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 "chartvalueaxisy_p.h"
+#include "qabstractaxis.h"
+#include "chartpresenter_p.h"
+#include "qvalueaxis.h"
+#include "abstractchartlayout_p.h"
+#include <QGraphicsLayout>
+#include <qmath.h>
+#include <QDebug>
+
+QT_CHARTS_BEGIN_NAMESPACE
+
+ChartValueAxisY::ChartValueAxisY(QValueAxis *axis, QGraphicsItem *item)
+    : VerticalAxis(axis, item),
+      m_axis(axis)
+{
+    QObject::connect(m_axis, SIGNAL(tickCountChanged(int)), this, SLOT(handleTickCountChanged(int)));
+    QObject::connect(m_axis, SIGNAL(labelFormatChanged(QString)), this, SLOT(handleLabelFormatChanged(QString)));
+}
+
+ChartValueAxisY::~ChartValueAxisY()
+{
+}
+
+QVector<qreal> ChartValueAxisY::calculateLayout() const
+{
+    int tickCount = m_axis->tickCount();
+
+    Q_ASSERT(tickCount >= 2);
+
+    QVector<qreal> points;
+    points.resize(tickCount);
+
+    const QRectF &gridRect = gridGeometry();
+
+    const qreal deltaY = gridRect.height() / (qreal(tickCount) - 1.0);
+    for (int i = 0; i < tickCount; ++i)
+        points[i] = qreal(i) * -deltaY + gridRect.bottom();
+
+    return points;
+}
+
+void ChartValueAxisY::updateGeometry()
+{
+    const QVector<qreal> &layout = ChartAxisElement::layout();
+    if (layout.isEmpty())
+        return;
+    setLabels(createValueLabels(min(),max(),layout.size(),m_axis->labelFormat()));
+    VerticalAxis::updateGeometry();
+}
+
+void ChartValueAxisY::handleTickCountChanged(int tick)
+{
+    Q_UNUSED(tick);
+    QGraphicsLayoutItem::updateGeometry();
+    if (presenter()) presenter()->layout()->invalidate();
+}
+
+void ChartValueAxisY::handleLabelFormatChanged(const QString &format)
+{
+    Q_UNUSED(format);
+    QGraphicsLayoutItem::updateGeometry();
+    if(presenter()) presenter()->layout()->invalidate();
+}
+
+QSizeF ChartValueAxisY::sizeHint(Qt::SizeHint which, const QSizeF &constraint) const
+{
+    Q_UNUSED(constraint)
+
+    QSizeF sh;
+    QSizeF base = VerticalAxis::sizeHint(which, constraint);
+    QStringList ticksList = createValueLabels(min(),max(),m_axis->tickCount(),m_axis->labelFormat());
+    qreal width = 0;
+    // Height of vertical axis sizeHint indicates the maximum distance labels can extend past
+    // first and last ticks. Base height is irrelevant.
+    qreal height = 0;
+
+    switch (which) {
+    case Qt::MinimumSize: {
+        QRectF boundingRect = ChartPresenter::textBoundingRect(axis()->labelsFont(),
+                                                               QStringLiteral("..."),
+                                                               axis()->labelsAngle());
+        width = boundingRect.width() + labelPadding() + base.width() + 1.0;
+        height = boundingRect.height() / 2.0;
+        sh = QSizeF(width, height);
+        break;
+    }
+    case Qt::PreferredSize: {
+        qreal labelWidth = 0.0;
+        qreal firstHeight = -1.0;
+        foreach (const QString& s, ticksList) {
+            QRectF rect = ChartPresenter::textBoundingRect(axis()->labelsFont(), s, axis()->labelsAngle());
+            labelWidth = qMax(rect.width(), labelWidth);
+            height = rect.height();
+            if (firstHeight < 0.0)
+                firstHeight = height;
+        }
+        width = labelWidth + labelPadding() + base.width() + 2.0; //two pixels of tolerance
+        height = qMax(height, firstHeight) / 2.0;
+        sh = QSizeF(width, height);
+        break;
+    }
+    default:
+        break;
+    }
+    return sh;
+}
+
+#include "moc_chartvalueaxisy_p.cpp"
+
+QT_CHARTS_END_NAMESPACE