updated docs

docs/docs/imaging.xml

@@ -109,6 +109,7 @@
          <item>cv_image</item>
 
          <item>draw_line</item> 
+         <item>fill_rect</item> 
          <item>assign_image</item> 
          <item>assign_image_scaled</item> 
          <item>assign_all_pixels</item> 
@@ -661,7 +662,19 @@
          <file>dlib/image_transforms.h</file>
          <spec_file link="true">dlib/image_transforms/draw_abstract.h</spec_file>
          <description>        
-            This global function draws a line onto an image.
+            This global function draws a line on an image.
+         </description>
+                                 
+      </component>
+            
+   <!-- ************************************************************************* -->
+      
+      <component>
+         <name>fill_rect</name>
+         <file>dlib/image_transforms.h</file>
+         <spec_file link="true">dlib/image_transforms/draw_abstract.h</spec_file>
+         <description>        
+            This global function draws a solid rectangle on an image.
          </description>
                                  
       </component>

docs/docs/term_index.xml

@@ -718,7 +718,7 @@
          <term file="dlib/gui_widgets/drawable_abstract.h.html" name="events_are_enabled"/>
 
          <term name="draw_line">
-            <term link="dlib/gui_widgets/canvas_drawing_abstract.h.html#draw_line" name="in the drawable GUI object"/>
+            <term link="dlib/gui_widgets/canvas_drawing_abstract.h.html#draw_line" name="for the GUI canvas object"/>
             <term link="imaging.html#draw_line" name="for image/array2d objects"/>
          </term>
 
@@ -760,7 +760,11 @@
          <term file="dlib/gui_widgets/canvas_drawing_abstract.h.html" name="draw_button_up"/>
          <term file="dlib/gui_widgets/canvas_drawing_abstract.h.html" name="draw_checkered"/>
          <term file="dlib/gui_widgets/canvas_drawing_abstract.h.html" name="draw_image"/>
-         <term file="dlib/gui_widgets/canvas_drawing_abstract.h.html" name="fill_rect"/>
+         <term name="fill_rect">
+            <term link="dlib/gui_widgets/canvas_drawing_abstract.h.html#fill_rect" name="for GUI canvas objects"/>
+            <term link="dlib/image_transforms/draw_abstract.h.html#fill_rect" name="for image/array2d objects"/>
+         </term>
+
          <term file="dlib/gui_widgets/canvas_drawing_abstract.h.html" name="fill_rect_with_vertical_gradient"/>
          <term file="dlib/gui_widgets/canvas_drawing_abstract.h.html" name="fill_gradient_rounded"/>
          <term file="dlib/gui_widgets/canvas_drawing_abstract.h.html" name="draw_rounded_rectangle"/>