From 8f888fddb056e4af2437a8996b8294112509bc31 Mon Sep 17 00:00:00 2001
From: Mikko Rasa <tdb@tdb.fi>
Date: Sun, 11 Sep 2016 16:27:46 +0300
Subject: [PATCH] Add support for displaying named icons in an Image widget

---
 source/image.cpp | 41 +++++++++++++++++++++++++++++++++++++++++
 source/image.h   |  5 +++++
 2 files changed, 46 insertions(+)

diff --git a/source/image.cpp b/source/image.cpp
index 383f906..0102a47 100644
--- 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
diff --git a/source/image.h b/source/image.h
index 3194216..1855610 100644
--- a/source/image.h
+++ b/source/image.h
@@ -14,6 +14,7 @@ class Image: public Widget
 {
 private:
 	const GL::Texture2D *image;
+	std::string icon_name;
 	bool keep_aspect;
 
 public:
@@ -26,10 +27,14 @@ private:
 
 public:
 	void set_image(const GL::Texture2D *);
+	void set_icon(const std::string &);
 	void set_keep_aspect(bool);
 
 private:
+	void update_icon();
 	virtual void rebuild_special(const Part &);
+	virtual void on_style_change();
+	virtual void on_reparent();
 };
 
 } // namespace GLtk
-- 
2.43.0