Tickcount and both automatic and explicit range setting via axes

- Tick count moved to QValueAxis.
- QValueAxis adjusts range to data by default on barcharts.
- QValueaxis explicit range setting now works for barchart.

Change-Id: I2c0afcab34b74a848144fda41d9135dcdb510354
Reviewed-by: Tomi Korpipää <tomi.korpipaa@digia.com>

1 files changed, 29 insertions, 1 deletions

diff --git a/src/datavis3d/engine/axisrendercache.cpp b/src/datavis3d/engine/axisrendercache.cpp
index 4997ed80..a5466aba 100644
--- a/src/datavis3d/engine/axisrendercache.cpp
+++ b/src/datavis3d/engine/axisrendercache.cpp
@@ -47,7 +47,8 @@ AxisRenderCache::AxisRenderCache()
     : m_type(QAbstractAxis::AxisTypeNone),
       m_min(0.0),
       m_max(0.0),
-      m_drawer(0)
+      m_drawer(0),
+      m_tickStep(0.0f)
 {
 }
 
@@ -112,6 +113,24 @@ void AxisRenderCache::setLabels(const QStringList &labels)
     }
 }
 
+void AxisRenderCache::setMin(qreal min)
+{
+    m_min = min;
+    updateTickStep();
+}
+
+void AxisRenderCache::setMax(qreal max)
+{
+    m_max = max;
+    updateTickStep();
+}
+
+void AxisRenderCache::setTickCount(int count)
+{
+    m_tickCount = count;
+    updateTickStep();
+}
+
 void AxisRenderCache::updateTextures()
 {
     if (m_title.isEmpty())
@@ -127,4 +146,13 @@ void AxisRenderCache::updateTextures()
     }
 }
 
+void AxisRenderCache::updateTickStep()
+{
+    if (m_tickCount > 0)
+        m_tickStep = (m_max - m_min) / m_tickCount;
+    else
+        m_tickStep = 0.0f;
+
+}
+
 QT_DATAVIS3D_END_NAMESPACE