Module renamed

Task-number: QTRD-2224

Change-Id: Iec18b6121809300b11d85445281d3c626c434f35
Reviewed-by: Miikka Heikkinen <miikka.heikkinen@digia.com>

1 files changed, 186 insertions, 0 deletions

diff --git a/src/datavisualization/engine/axisrendercache.cpp b/src/datavisualization/engine/axisrendercache.cpp
new file mode 100644
index 00000000..c525c777
--- /dev/null
+++ b/src/datavisualization/engine/axisrendercache.cpp
@@ -0,0 +1,186 @@
+/****************************************************************************
+**
+** Copyright (C) 2013 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 QtDataVisualization module.
+**
+** 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
+**
+****************************************************************************/
+
+#include "axisrendercache_p.h"
+#include "qmath.h"
+#include <QFontMetrics>
+
+QT_DATAVISUALIZATION_BEGIN_NAMESPACE
+
+AxisRenderCache::AxisRenderCache()
+    : m_type(Q3DAbstractAxis::AxisTypeNone),
+      m_min(0.0),
+      m_max(10.0),
+      m_segmentCount(5),
+      m_subSegmentCount(1),
+      m_font(QFont(QStringLiteral("Arial"))),
+      m_drawer(0),
+      m_segmentStep(10.0f),
+      m_subSegmentStep(10.0f)
+{
+}
+
+AxisRenderCache::~AxisRenderCache()
+{
+    foreach (LabelItem *label, m_labelItems)
+        delete label;
+}
+
+void AxisRenderCache::setDrawer(Drawer *drawer)
+{
+    m_drawer = drawer;
+    m_font = m_drawer->font();
+    if (m_drawer) {
+        QObject::connect(m_drawer, &Drawer::drawerChanged, this, &AxisRenderCache::updateTextures);
+        updateTextures();
+    }
+}
+
+void AxisRenderCache::setType(Q3DAbstractAxis::AxisType type)
+{
+    m_type = type;
+
+    // If type is set, it means completely new axis instance, so clear all old data
+    m_labels.clear();
+    m_title.clear();
+    m_min = 0.0;
+    m_max = 10.0;
+    m_segmentCount = 5;
+    m_subSegmentCount = 1;
+    m_labelFormat.clear();
+
+    m_titleItem.clear();
+    foreach (LabelItem *label, m_labelItems)
+        delete label;
+    m_labelItems.clear();
+    m_segmentStep = 10.0f;
+    m_subSegmentStep = 10.0f;
+}
+
+void AxisRenderCache::setTitle(const QString &title)
+{
+    if (m_title != title) {
+        m_title = title;
+        // Generate axis label texture
+        if (m_drawer)
+            m_drawer->generateLabelItem(m_titleItem, title);
+    }
+}
+
+void AxisRenderCache::setLabels(const QStringList &labels)
+{
+    if (m_labels != labels) {
+        int newSize(labels.size());
+        int oldSize(m_labels.size());
+
+        for (int i = newSize; i < oldSize; i++)
+            delete m_labelItems.takeLast();
+
+        m_labelItems.reserve(newSize);
+
+        int widest = maxLabelWidth(labels);
+
+        for (int i = 0; i < newSize; i++) {
+            if (i >= oldSize)
+                m_labelItems.append(new LabelItem);
+            if (m_drawer) {
+                if (labels.at(i).isEmpty())
+                    m_labelItems[i]->clear();
+                else if (i >= oldSize || labels.at(i) != m_labels.at(i))
+                    m_drawer->generateLabelItem(*m_labelItems[i], labels.at(i), widest);
+            }
+        }
+        m_labels = labels;
+    }
+}
+
+void AxisRenderCache::setMin(qreal min)
+{
+    m_min = min;
+    updateSegmentStep();
+}
+
+void AxisRenderCache::setMax(qreal max)
+{
+    m_max = max;
+    updateSegmentStep();
+}
+
+void AxisRenderCache::setSegmentCount(int count)
+{
+    m_segmentCount = count;
+    updateSegmentStep();
+}
+
+void AxisRenderCache::setSubSegmentCount(int count)
+{
+    m_subSegmentCount = count;
+    updateSubSegmentStep();
+}
+
+void AxisRenderCache::updateTextures()
+{
+    m_font = m_drawer->font();
+
+    if (m_title.isEmpty())
+        m_titleItem.clear();
+    else
+        m_drawer->generateLabelItem(m_titleItem, m_title);
+
+    int widest = maxLabelWidth(m_labels);
+
+    for (int i = 0; i < m_labels.size(); i++) {
+        if (m_labels.at(i).isEmpty())
+            m_labelItems[i]->clear();
+        else
+            m_drawer->generateLabelItem(*m_labelItems[i], m_labels.at(i), widest);
+    }
+}
+
+void AxisRenderCache::updateSegmentStep()
+{
+    if (m_segmentCount > 0)
+        m_segmentStep = qFabs((m_max - m_min) / m_segmentCount);
+    else
+        m_segmentStep = 0.0f; // Irrelevant
+    updateSubSegmentStep();
+}
+
+void AxisRenderCache::updateSubSegmentStep()
+{
+    if (m_subSegmentCount > 1)
+        m_subSegmentStep = m_segmentStep / m_subSegmentCount;
+    else
+        m_subSegmentStep = m_segmentStep;
+}
+
+int AxisRenderCache::maxLabelWidth(const QStringList &labels) const
+{
+    int labelWidth = 0;
+    QFont labelFont = m_font;
+    labelFont.setPointSize(50);
+    QFontMetrics labelFM(labelFont);
+    for (int i = 0; i < labels.size(); i++) {
+        int newWidth = labelFM.width(labels.at(i));
+        if (labelWidth < newWidth)
+            labelWidth = newWidth;
+    }
+    return labelWidth;
+}
+
+QT_DATAVISUALIZATION_END_NAMESPACE