From c6d0c84be1f07a71e866d8387acb5948eee67ec2 Mon Sep 17 00:00:00 2001
From: Paul Wisbey <p.wisbey@samsung.com>
Date: Tue, 10 Mar 2015 08:25:42 +0000
Subject: [PATCH] Fixed crash when Visual model positions < glyphs

Change-Id: I61398d876cc3614d97487a5c02c0dd51201f3420
---
 dali-toolkit/internal/text/text-view.cpp    | 9 ++++++++-
 dali-toolkit/internal/text/visual-model.cpp | 5 +++++
 dali-toolkit/internal/text/visual-model.h   | 8 ++++++++
 3 files changed, 21 insertions(+), 1 deletion(-)

diff --git a/dali-toolkit/internal/text/text-view.cpp b/dali-toolkit/internal/text/text-view.cpp
index 235f534..d12c697 100644
--- a/dali-toolkit/internal/text/text-view.cpp
+++ b/dali-toolkit/internal/text/text-view.cpp
@@ -55,7 +55,14 @@ Length View::GetNumberOfGlyphs() const
 {
   if( mImpl->mVisualModel )
   {
-    return mImpl->mVisualModel->GetNumberOfGlyphs();
+    VisualModel& model = *mImpl->mVisualModel;
+
+    Length glyphCount = model.GetNumberOfGlyphs();
+    Length positionCount = model.GetNumberOfGlyphPositions();
+
+    DALI_ASSERT_DEBUG( positionCount <= glyphCount && "Invalid glyph positions in Model" );
+
+    return (positionCount < glyphCount) ? positionCount : glyphCount;
   }
 
   return 0;
diff --git a/dali-toolkit/internal/text/visual-model.cpp b/dali-toolkit/internal/text/visual-model.cpp
index ab183e4..abf4f65 100644
--- a/dali-toolkit/internal/text/visual-model.cpp
+++ b/dali-toolkit/internal/text/visual-model.cpp
@@ -157,6 +157,11 @@ void VisualModel::SetGlyphPositions( const Vector2* glyphPositions,
   memcpy( modelPositions.Begin(), glyphPositions, numberOfGlyphs * sizeof( Vector2 ) );
 }
 
+Length VisualModel::GetNumberOfGlyphPositions() const
+{
+  return mImpl->mGlyphPositions.Count();
+}
+
 void VisualModel::GetGlyphPositions( Vector2* glyphPositions,
                                      GlyphIndex glyphIndex,
                                      Length numberOfGlyphs ) const
diff --git a/dali-toolkit/internal/text/visual-model.h b/dali-toolkit/internal/text/visual-model.h
index ad2a137..ac3b096 100644
--- a/dali-toolkit/internal/text/visual-model.h
+++ b/dali-toolkit/internal/text/visual-model.h
@@ -178,6 +178,14 @@ public:
                           Length numberOfGlyphs );
 
   /**
+   * Retrieves the number of glyph positions set.
+   *
+   * @note This may be less than the number of glyphs in the model.
+   * @return The number of glyphs.
+   */
+  Length GetNumberOfGlyphPositions() const;
+
+  /**
    * @brief Retrieves the glyph positions.
    *
    * @pre The size of the @p positions buffer needs to be big enough to copy the @p numberOfGlyphs positions.
-- 
2.7.4