add in two cell anchors for images.

3 files changed, 31 insertions, 3 deletions

diff --git a/lib/axlsx/drawing/drawing.rb b/lib/axlsx/drawing/drawing.rb
index 943c0f2d..b06130f1 100644
--- a/lib/axlsx/drawing/drawing.rb
+++ b/lib/axlsx/drawing/drawing.rb
@@ -68,11 +68,16 @@ module Axlsx
       @anchors = SimpleTypedList.new [TwoCellAnchor, OneCellAnchor]
     end
 
-    # Adds an image to the chart
+    # Adds an image to the chart If th end_at option is specified we create a two cell anchor. By default we use a one cell anchor.
     # @note The recommended way to manage images is to use Worksheet.add_image. Please refer to that method for documentation.
     # @see Worksheet#add_image
+    # @return [Pic]
     def add_image(options={})
-      OneCellAnchor.new(self, options)
+      if options[:end_at]
+        TwoCellAnchor.new(self, options).add_pic(options)
+      else
+        OneCellAnchor.new(self, options)
+      end 
       @anchors.last.object
     end
 
diff --git a/lib/axlsx/drawing/pic.rb b/lib/axlsx/drawing/pic.rb
index e5e005fa..e7b5bbbb 100644
--- a/lib/axlsx/drawing/pic.rb
+++ b/lib/axlsx/drawing/pic.rb
@@ -113,23 +113,29 @@ module Axlsx
     # @param [Integer] v
     # @see OneCellAnchor.width
     def width
+      return unless @anchor.is_a?(OneCellAnchor)
       @anchor.width
     end
 
     # @see width
     def width=(v)
+      return unless @anchor.is_a?(OneCellAnchor)
       @anchor.width = v
     end
 
     # providing access to update the anchor's height attribute
     # @param [Integer] v
     # @see OneCellAnchor.width
+    # @note this is a noop if you are using a TwoCellAnchor
     def height
+      return unless @anchor.is_a?(OneCellAnchor)
       @anchor.height
     end
 
     # @see height
+    # @note This is a noop if you are using a TwoCellAnchor
     def height=(v)
+      return unless @anchor.is_a?(OneCellAnchor)
       @anchor.height = v
     end
 
@@ -142,6 +148,18 @@ module Axlsx
     def start_at(x, y)
       @anchor.from.col = x
       @anchor.from.row = y
+      @anchor.from
+    end
+    
+    # noop if not using a two cell anchor
+    # @param [Integer] x The column
+    # @param [Integer] y The row
+    # @return [Marker]
+    def end_at(x, y)
+      return unless @anchor.is_a?(TwoCellAnchor)
+      @anchor.to.col = x
+      @anchor.to.row = y
+      @anchor.to
     end
 
     # Serializes the object
diff --git a/lib/axlsx/drawing/two_cell_anchor.rb b/lib/axlsx/drawing/two_cell_anchor.rb
index b496bd8a..8071515c 100644
--- a/lib/axlsx/drawing/two_cell_anchor.rb
+++ b/lib/axlsx/drawing/two_cell_anchor.rb
@@ -34,7 +34,7 @@ module Axlsx
     # @param [Drawing] drawing
     # @param [Class] chart_type This is passed to the graphic frame for instantiation. must be Chart or a subclass of Chart
     # @param object The object this anchor holds.
-    # @option options [Array] start_at the col, row to start at
+    # @option options [Array] start_at the col, row to start at THIS IS DOCUMENTED BUT NOT IMPLEMENTED HERE!
     # @option options [Array] end_at the col, row to end at
     def initialize(drawing, options={})
       @drawing = drawing
@@ -49,6 +49,11 @@ module Axlsx
       @object.chart
     end
 
+    # Creates an image associated with this anchor.
+    def add_pic(options={})
+      @object = Pic.new(self, options)
+    end
+
     # The index of this anchor in the drawing
     # @return [Integer]
     def index