Add a signal to notify when the automatic size of a widget changes

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

diff --git a/source/button.cpp b/source/button.cpp
index 3c71499bde19cdc32794478687ef689e18f4e90b..da2c433b9d24cfc2fb3110c2e567ec6950262470 100644 (file)
--- a/source/button.cpp
+++ b/source/button.cpp
@@ -8,6 +8,9 @@ Distributed under the LGPL
 #include <msp/gl/immediate.h>
 #include "button.h"
 #include "part.h"
+#include "style.h"
+
+using namespace std;
 
 namespace Msp {
 namespace GLtk {
@@ -20,9 +23,35 @@ Button::Button(const std::string &t):
        set_text(t);
 }
 
+void Button::autosize()
+{
+       if(!style)
+               return;
+
+       Widget::autosize();
+
+       if(const Part *text_part = style->get_part("text"))
+       {
+               const Sides &margin = text_part->get_margin();
+               geom.w = max(geom.w, text.get_width()+margin.left+margin.right);
+               geom.h = max(geom.h, text.get_height()+margin.top+margin.bottom);
+       }
+
+       if(icon)
+       {
+               if(const Part *icon_part = style->get_part("icon"))
+               {
+                       const Sides &margin = icon_part->get_margin();
+                       geom.w = max(geom.w, icon->get_width()+margin.left+margin.right);
+                       geom.h = max(geom.h, icon->get_height()+margin.top+margin.bottom);
+               }
+       }
+}
+
 void Button::set_text(const std::string &t)
 {
        text = t;
+       signal_autosize_changed.emit();
 }
 
 void Button::set_icon(const GL::Texture2D *i)