Add support for displaying named icons in an Image widget

[libs/gltk.git] / source / image.cpp

diff --git a/source/image.cpp b/source/image.cpp
index 383f906911993d2a83d8d434ec791f8c0e90d303..0102a47e487ea8bf4a9efdf29cf1696172820b8f 100644 (file)
--- a/source/image.cpp
+++ b/source/image.cpp
@@ -1,6 +1,8 @@
 #include <msp/gl/meshbuilder.h>
 #include "image.h"
 #include "part.h"
+#include "resources.h"
+#include "root.h"
 #include "style.h"
 
 using namespace std;
@@ -35,16 +37,43 @@ void Image::autosize_special(const Part &part, Geometry &ageom) const
 void Image::set_image(const GL::Texture2D *i)
 {
        image = i;
+       icon_name = string();
        signal_autosize_changed.emit();
        rebuild();
 }
 
+void Image::set_icon(const string &n)
+{
+       icon_name = n;
+       update_icon();
+}
+
 void Image::set_keep_aspect(bool ka)
 {
        keep_aspect = ka;
        rebuild();
 }
 
+void Image::update_icon()
+{
+       if(style)
+       {
+               Root *root = find_ancestor<Root>();
+               if(root)
+               {
+                       if(icon_name.empty())
+                               image = 0;
+                       else
+                               image = &root->get_resources().get<GL::Texture2D>(icon_name);
+                       signal_autosize_changed.emit();
+                       rebuild();
+                       return;
+               }
+       }
+
+       image = 0;
+}
+
 void Image::rebuild_special(const Part &part)
 {
        if(part.get_name()=="image")
@@ -88,5 +117,17 @@ void Image::rebuild_special(const Part &part)
        }
 }
 
+void Image::on_style_change()
+{
+       if(!icon_name.empty())
+               update_icon();
+}
+
+void Image::on_reparent()
+{
+       if(!icon_name.empty())
+               update_icon();
+}
+
 } // namespace GLtk
 } // namespace Msp