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

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

diff --git a/source/widget.cpp b/source/widget.cpp
index e1aee846675d3b9e69e37b5d5039bd21f5baa92b..17bc4e3c95c96a6aed1f3e5eb14129b6951fdd72 100644 (file)
--- a/source/widget.cpp
+++ b/source/widget.cpp
@@ -1,90 +1,204 @@
+/* $Id$
+
+This file is part of libmspgltk
+Copyright © 2007-2011  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 "container.h"
 #include "resources.h"
+#include "root.h"
 #include "widget.h"
 
-#include <iostream>
 using namespace std;
 
 namespace Msp {
 namespace GLtk {
 
+Widget::Widget():
+       style(0),
+       state(NORMAL),
+       visible(true),
+       focusable(true),
+       parent(0)
+{ }
+
+Widget::~Widget()
+{
+       if(parent)
+               parent->remove(*this);
+}
+
 void Widget::set_position(int x, int y)
 {
-       geom.x=x;
-       geom.y=y;
+       geom.x = x;
+       geom.y = y;
+       on_geometry_change();
 }
 
 void Widget::set_size(unsigned w, unsigned h)
 {
-       geom.w=w;
-       geom.h=h;
+       geom.w = w;
+       geom.h = h;
+       on_geometry_change();
+}
+
+void Widget::autosize()
+{
+       geom.w = 0;
+       geom.h = 0;
+       const Style::PartSeq &parts = style->get_parts();
+       for(Style::PartSeq::const_iterator i=parts.begin(); i!=parts.end(); ++i)
+               if(i->get_name().empty())
+               {
+                       geom.w = max(geom.w, i->get_geometry().w);
+                       geom.h = max(geom.h, i->get_geometry().h);
+               }
 }
 
 void Widget::set_geometry(const Geometry &g)
 {
-       geom=g;
+       geom = g;
+       on_geometry_change();
+}
+
+void Widget::set_parent(Container *p)
+{
+       if(parent && p)
+               throw InvalidState("Widget is already in a Container");
+       parent = p;
+
+       on_reparent();
+       update_style();
 }
 
 void Widget::set_style(const string &s)
 {
-       style_name=s;
+       style_name = s;
        update_style();
 }
 
+void Widget::update_style()
+{
+       Widget *top;
+       for(top=this; top->parent; top=top->parent) ;
+       Root *root = dynamic_cast<Root *>(top);
+       if(!root)
+               style = 0;
+       else
+       {
+               string sname = get_class();
+               if(!style_name.empty())
+               {
+                       sname += '-';
+                       sname += style_name;
+               }
+
+               style = root->get_resources().get<Style>(sname);
+       }
+
+       on_style_change();
+       signal_autosize_changed.emit();
+}
+
+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 with null style (class=\"%s\", style_name=\"%s\")", get_class(), style_name));
 
        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);
+       const Style::PartSeq &parts = style->get_parts();
+       for(Style::PartSeq::const_iterator i=parts.begin(); i!=parts.end(); ++i)
+       {
+               if(i->get_name().empty())
+               {
+                       GL::PushMatrix push_;
+                       i->render(geom, state);
+               }
+               else
+                       render_special(*i);
+       }
        GL::pop_matrix();
 }
 
-Widget::Widget(const Resources &r):
-       res(r),
-       style(0),
-       state(NORMAL)
-{ }
-
-void Widget::update_style()
+void Widget::pointer_enter()
 {
-       style=&res.get_style(get_class(), style_name);
+       state |= HOVER;
 }
 
-void Widget::render_part(const Part &part) const
+void Widget::pointer_leave()
 {
-       render_graphic(part);
+       state &= ~HOVER;
 }
 
-void Widget::render_graphic(const Part &part) const
+void Widget::focus_in()
 {
-       GL::push_matrix();
-       part.render(geom, state);
-       GL::pop_matrix();
+       state |= FOCUS;
 }
 
-void Widget::render_text(const Part &part, const string &text) const
+void Widget::focus_out()
 {
-       const GL::Font *const font=style->get_font();
+       state &= ~FOCUS;
+}
 
-       const float font_size=font->get_default_size();
-       unsigned text_w=static_cast<unsigned>(font->get_string_width(text)*font_size);
 
-       GL::push_matrix();
+Widget::Loader::Loader(Widget &w):
+       DataFile::ObjectLoader<Widget>(w)
+{
+       add("position", &Loader::position);
+       add("size",     &Loader::size);
+       add("style",    &Loader::style);
+       add("visible",  &Widget::visible);
+}
 
-       part.get_alignment().apply(geom, text_w, static_cast<unsigned>(font_size));
-       GL::scale_uniform(font_size);
+void Widget::Loader::position(int x, int y)
+{
+       obj.set_position(x, y);
+}
 
-       const Color &color=style->get_font_color();
-       glColor3f(color.r, color.g, color.b);
-       font->draw_string(text);
-       glColor3f(1, 1, 1);
+void Widget::Loader::size(unsigned w, unsigned h)
+{
+       obj.set_size(w, h);
+}
 
-       GL::pop_matrix();
+void Widget::Loader::style(const string &s)
+{
+       obj.set_style(s);
 }
 
 } // namespace GLtk