Derive Root from Graphics::EventSource

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

diff --git a/source/widget.cpp b/source/widget.cpp
index 7d608f2ce8d32980505f3fde37e8df91a3bb35de..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)
 { }
 
@@ -56,6 +59,11 @@ 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)
@@ -63,55 +71,62 @@ void Widget::set_visible(bool v)
 
        visible=v;
 
-       if(!visible && parent)
-               parent->child_hidden(*this);
+       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)
        {
                if(i->get_name().empty())
-                       render_graphic(*i);
+               {
+                       GL::PushMatrix push_;
+                       i->render(geom, state);
+               }
                else
                        render_special(*i);
        }
        GL::pop_matrix();
 }
 
-void Widget::render_graphic(const Part &part) const
+void Widget::pointer_enter()
 {
-       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::pointer_leave()
 {
-       const GL::Font *const font=style->get_font();
-       const float font_size=font->get_default_size();
-
-       Geometry rgeom;
-       rgeom.w=static_cast<unsigned>(font->get_string_width(text)*font_size);
-       rgeom.h=static_cast<unsigned>((font->get_ascent()-font->get_descent())*font_size);
-       rgeom.y=static_cast<int>(-font->get_descent()*font_size);
-       part.get_alignment().apply(rgeom, geom, part.get_margin());
-
-       GL::push_matrix();
-       GL::translate(rgeom.x, rgeom.y, 0);
-       GL::scale_uniform(font_size);
+       state&=~HOVER;
+}
 
-       const GL::Color &color=style->get_font_color();
-       glColor3f(color.r, color.g, color.b);
-       font->draw_string(text);
-       glColor3f(1, 1, 1);
+void Widget::focus_in()
+{
+       state|=FOCUS;
+}
 
-       GL::pop_matrix();
+void Widget::focus_out()
+{
+       state&=~FOCUS;
 }
 
 void Widget::update_style()
@@ -126,16 +141,16 @@ void Widget::update_style()
        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);
 }