From f98c3e8556f4eb4e62be3e0a5bfddee1eeac5e40 Mon Sep 17 00:00:00 2001
From: Javon Prince <javon.prince@samsung.com>
Date: Thu, 24 Apr 2014 16:25:52 +0100
Subject: [PATCH] Scripting: Allow JSON colors (and alpha) to be specified as

  "color":{
    "r":255,
    "g":0,
    "b":127,
    "a":50
  }

OR

  "color":[1, 0, 0.5, 0.2]

OR
  "color":"#FF007F",
  "color-alpha":0.2

Change-Id: If5bad5e9a51875b470d6e3638c6f7d49618d06b7
Signed-off-by: Javon Prince <javon.prince@samsung.com>
---
 dali-toolkit/internal/builder/builder-get-is.inl.h | 10 ++---
 .../internal/builder/builder-set-property.cpp      | 46 +++++++++++++++++++++-
 2 files changed, 50 insertions(+), 6 deletions(-)

diff --git a/dali-toolkit/internal/builder/builder-get-is.inl.h b/dali-toolkit/internal/builder/builder-get-is.inl.h
index 73550f5..61acd85 100644
--- a/dali-toolkit/internal/builder/builder-get-is.inl.h
+++ b/dali-toolkit/internal/builder/builder-get-is.inl.h
@@ -136,7 +136,7 @@ inline OptionalVector4 IsVector4(const OptionalChild& node)
 {
   OptionalVector4 ret;
 
-  if( node && (*node).Size() >= 4 )
+  if( node && (TreeNode::ARRAY == (*node).GetType()) && (*node).Size() >= 4 )
   {
     Dali::Vector4 v;
     if( CopyNumbers((*node).CBegin(), 4, v) )
@@ -152,7 +152,7 @@ inline OptionalVector3 IsVector3(const OptionalChild& node)
 {
   OptionalVector3 ret;
 
-  if( node && (*node).Size() >= 3 )
+  if( node && (TreeNode::ARRAY == (*node).GetType()) && (*node).Size() >= 3 )
   {
     Dali::Vector3 v;
     if( CopyNumbers((*node).CBegin(), 3, v) )
@@ -168,7 +168,7 @@ inline OptionalVector2 IsVector2(const OptionalChild& node)
 {
   OptionalVector2 ret;
 
-  if( node && (*node).Size() >= 2 )
+  if( node && (TreeNode::ARRAY == (*node).GetType()) && (*node).Size() >= 2 )
   {
     Dali::Vector2 v;
     if( CopyNumbers((*node).CBegin(), 2, v) )
@@ -184,7 +184,7 @@ inline OptionalMatrix IsMatrix(const OptionalChild &node)
 {
   OptionalMatrix ret;
 
-  if( node && (*node).Size() >= 16 )
+  if( node && (TreeNode::ARRAY == (*node).GetType()) && (*node).Size() >= 16 )
   {
     float v[16];
     if( CopyNumbers((*node).CBegin(), 16, v) )
@@ -200,7 +200,7 @@ inline OptionalMatrix3 IsMatrix3(const OptionalChild& node)
 {
   OptionalMatrix3 ret;
 
-  if( node && (*node).Size() >= 9 )
+  if( node && (TreeNode::ARRAY == (*node).GetType()) && (*node).Size() >= 9 )
   {
     float v[9];
     if( CopyNumbers((*node).CBegin(), 9, v) )
diff --git a/dali-toolkit/internal/builder/builder-set-property.cpp b/dali-toolkit/internal/builder/builder-set-property.cpp
index e0e98c8..285bd7b 100644
--- a/dali-toolkit/internal/builder/builder-set-property.cpp
+++ b/dali-toolkit/internal/builder/builder-set-property.cpp
@@ -72,7 +72,21 @@ bool SetPropertyFromNode( const TreeNode& node, Property::Type type, Property::V
 namespace
 {
 
-
+/**
+ * Converts a HTML style 'color' hex string ("#FF0000" for bright red) to a Vector4.
+ * The Vector4 alpha component will be set to 1.0f
+ * @param hexString The HTML style hex string
+ * @return a Vector4 containing the new color value
+ */
+Vector4 HexStringToVector4( const char* s )
+{
+  unsigned int value(0u);
+  std::istringstream( s ) >> std::hex >> value;
+  return Vector4( ((value >> 16 ) & 0xff ) / 255.0f,
+                  ((value >> 8 ) & 0xff ) / 255.0f,
+                  (value & 0xff ) / 255.0f,
+                  1.0f );
+}
 
 } // anon namespace
 
@@ -223,6 +237,36 @@ bool SetPropertyFromNode( const TreeNode& node, Property::Type type, Property::V
         value = *v;
         done = true;
       }
+      else if( OptionalString s = replacer.IsString(node) )
+      {
+        if( (*s)[0] == '#' && 7 == (*s).size() )
+        {
+          value = HexStringToVector4( &(*s)[1] );
+          done = true;
+        }
+      }
+      else if( TreeNode::OBJECT == node.GetType() )
+      {
+        // check for "r", "g" and "b" child color component nodes
+        OptionalInteger r = replacer.IsInteger( IsChild(node, "r") );
+        OptionalInteger g = replacer.IsInteger( IsChild(node, "g") );
+        OptionalInteger b = replacer.IsInteger( IsChild(node, "b") );
+        if( r && g && b )
+        {
+          float red( (*r) * (1.0f/255.0f) );
+          float green( (*r) * (1.0f/255.0f) );
+          float blue( (*r) * (1.0f/255.0f) );
+          // check for optional "a" (alpha) node, default to fully opaque if it is not found.
+          float alpha( 1.0f );
+          OptionalInteger a = replacer.IsInteger( IsChild(node, "a") );
+          if( a )
+          {
+            alpha = (*a) * (1.0f/255.0f);
+          }
+          value = Vector4( red, green, blue, alpha );
+          done = true;
+        }
+      }
       break;
     }
     case Property::MATRIX3:
-- 
2.7.4