Derive Root from Graphics::EventSource

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

diff --git a/source/widget.cpp b/source/widget.cpp
index e41310a50c5fd5cba82298dd3149983b16a0f8a1..04c272a136242cea7b14e9adf1988da22fc9cf09 100644 (file)
--- a/source/widget.cpp
+++ b/source/widget.cpp
@@ -1,12 +1,14 @@
 /* $Id$
 
 This file is part of libmspgltk
-Copyright © 2007  Mikko Rasa, Mikkosoft Productions
+Copyright © 2007-2009  Mikko Rasa, Mikkosoft Productions
 Distributed under the LGPL
 */
 
+#include <msp/gl/immediate.h>
 #include <msp/gl/matrix.h>
 #include <msp/gl/transform.h>
+#include <msp/strings/formatter.h>
 #include "panel.h"
 #include "resources.h"
 #include "widget.h"
@@ -21,6 +23,7 @@ Widget::Widget(const Resources &r):
        style(0),
        state(NORMAL),
        visible(true),
+       focusable(true),
        parent(0)
 { }
 
@@ -34,17 +37,20 @@ void Widget::set_position(int x, int y)
 {
        geom.x=x;
        geom.y=y;
+       on_geometry_change();
 }
 
 void Widget::set_size(unsigned w, unsigned h)
 {
        geom.w=w;
        geom.h=h;
+       on_geometry_change();
 }
 
 void Widget::set_geometry(const Geometry &g)
 {
        geom=g;
+       on_geometry_change();
 }
 
 void Widget::set_style(const string &s)
@@ -53,48 +59,74 @@ void Widget::set_style(const string &s)
        update_style();
 }
 
+void Widget::set_tooltip(const string &t)
+{
+       tooltip = t;
+}
+
+void Widget::set_visible(bool v)
+{
+       if(v==visible)
+               return;
+
+       visible=v;
+
+       signal_visibility_changed.emit(visible);
+}
+
+void Widget::set_focusable(bool f)
+{
+       focusable=f;
+}
+
+void Widget::set_focus()
+{
+       if(!parent)
+               throw InvalidState("No parent");
+       if(!visible)
+               throw InvalidState("Can't set focus on invisible widget");
+
+       signal_request_focus.emit();
+}
+
 void Widget::render() const
 {
        if(!style)
-               throw InvalidState("Attempt to render a widget without a style");
+               throw InvalidState(format("Attempt to render a widget without a style (class=\"%s\")", get_class()));
 
        GL::push_matrix();
        GL::translate(geom.x, geom.y, 0);
        for(PartSeq::const_iterator i=style->get_parts().begin(); i!=style->get_parts().end(); ++i)
-               render_part(*i);
+       {
+               if(i->get_name().empty())
+               {
+                       GL::PushMatrix push_;
+                       i->render(geom, state);
+               }
+               else
+                       render_special(*i);
+       }
        GL::pop_matrix();
 }
 
-void Widget::render_part(const Part &part) const
+void Widget::pointer_enter()
 {
-       render_graphic(part);
+       state|=HOVER;
 }
 
-void Widget::render_graphic(const Part &part) const
+void Widget::pointer_leave()
 {
-       GL::push_matrix();
-       part.render(geom, state);
-       GL::pop_matrix();
+       state&=~HOVER;
 }
 
-void Widget::render_text(const Part &part, const string &text) const
+void Widget::focus_in()
 {
-       const GL::Font *const font=style->get_font();
-
-       const float font_size=font->get_default_size();
-       unsigned text_w=static_cast<unsigned>(font->get_string_width(text)*font_size);
-
-       GL::push_matrix();
-
-       part.get_alignment().apply(geom, text_w, static_cast<unsigned>(font->get_ascent()*font_size));
-       GL::scale_uniform(font_size);
-
-       const GL::Color &color=style->get_font_color();
-       glColor3f(color.r, color.g, color.b);
-       font->draw_string(text);
-       glColor3f(1, 1, 1);
+       state|=FOCUS;
+}
 
-       GL::pop_matrix();
+void Widget::focus_out()
+{
+       state&=~FOCUS;
 }
 
 void Widget::update_style()
@@ -106,16 +138,19 @@ void Widget::update_style()
                sname+=style_name;
        }
        style=res.get<Style>(sname);
+       on_style_change();
 }
 
-void Widget::set_parent(Panel *p)
+void Widget::set_parent(Container *p)
 {
        if(parent && p)
-               throw InvalidState("Widget is already in a Panel");
+               throw InvalidState("Widget is already in a Container");
        parent=p;
+
+       on_reparent();
 }
 
-void Widget::set_parent(Widget &w, Panel *p)
+void Widget::set_parent(Widget &w, Container *p)
 {
        w.set_parent(p);
 }