Add Container class

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

diff --git a/source/dropdown.cpp b/source/dropdown.cpp
index 5f49b9ef33396dea8cd8141d92dcfe52386f9cfd..cbd7ee437111bc3726b1c0ba988471638142140b 100644 (file)
--- a/source/dropdown.cpp
+++ b/source/dropdown.cpp
@@ -1,14 +1,16 @@
 /* $Id$
 
 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/font.h>
 #include "dropdown.h"
 #include "list.h"
 #include "panel.h"
 #include "part.h"
+#include "style.h"
 
 using namespace std;
 
@@ -17,101 +19,120 @@ namespace GLtk {
 
 Dropdown::Dropdown(const Resources &r):
        Widget(r),
-       list(new List(res)),
-       list_active(false)
+       Container(r),
+       list(r),
+       dropped(false)
 {
-       list->signal_item_selected.connect(sigc::mem_fun(this, &Dropdown::list_item_selected));
+       add(list);
+       list.signal_item_selected.connect(sigc::mem_fun(this, &Dropdown::list_item_selected));
 
        update_style();
 }
 
-Dropdown::~Dropdown()
+void Dropdown::append(const string &item)
 {
-       delete list;
+       list.append(item);
+       resize_list();
 }
 
-void Dropdown::append(const string &item)
+void Dropdown::insert(unsigned i, const string &v)
 {
-       list->append(item);
+       list.insert(i, v);
+       resize_list();
 }
 
-void Dropdown::button_press(int x, int y, unsigned btn)
+void Dropdown::remove(unsigned i)
 {
-       if(list->get_geometry().is_inside(x, y))
-       {
-               const Geometry &lgeom=list->get_geometry();
-               list->button_press(x-lgeom.x, y-lgeom.y, btn);
-               list_active=true;
-       }
-       else if(state==ACTIVE)
-       {
-               state=HOVER;
-               parent->ungrab_pointer(*this);
-       }
-       else if(btn==1)
-       {
-               state=ACTIVE;
+       list.remove(i);
+       resize_list();
+}
 
-               if(parent)
-               {
-                       parent->raise(*this);
-                       parent->grab_pointer(*this);
-               }
-       }
+void Dropdown::clear()
+{
+       list.clear();
+       resize_list();
 }
 
-void Dropdown::button_release(int x, int y, unsigned btn)
+unsigned Dropdown::get_n_items() const
 {
-       if(list_active)
-       {
-               const Geometry &lgeom=list->get_geometry();
-               list->button_release(x-lgeom.x, y-lgeom.y, btn);
-               list_active=false;
-       }
+       return list.get_n_items();
 }
 
-void Dropdown::pointer_motion(int x, int y)
+void Dropdown::set_selected_index(int i)
 {
-       if(list_active)
-       {
-               const Geometry &lgeom=list->get_geometry();
-               list->pointer_motion(x-lgeom.x, y-lgeom.y);
-       }
+       list.set_selected_index(i);
 }
 
-void Dropdown::pointer_enter()
+const string &Dropdown::get_selected() const
 {
-       if(state==NORMAL)
-               state=HOVER;
+       return list.get_selected();
 }
 
-void Dropdown::pointer_leave()
+int Dropdown::get_selected_index() const
 {
-       if(state==HOVER)
-               state=NORMAL;
+       return list.get_selected_index();
+}
+
+void Dropdown::button_press(int x, int y, unsigned btn)
+{
+       if(dropped)
+       {
+               Container::button_press(x, y, btn);
+               if(!click_focus)
+               {
+                       dropped=false;
+                       state&=~ACTIVE;
+                       signal_ungrab_pointer.emit();
+               }
+       }
+       else if(btn==1)
+       {
+               dropped=true;
+               state|=ACTIVE;
+               signal_grab_pointer.emit();
+       }
 }
 
 void Dropdown::render_special(const Part &part) const
 {
        if(part.get_name()=="text")
-               render_text(part, text);
-       else if(part.get_name()=="list" && state==ACTIVE)
-               list->render();
+       {
+               if(list.get_selected_index()>=0)
+                       render_text(part, list.get_selected());
+       }
+       else if(part.get_name()=="list" && dropped)
+               list.render();
 }
 
 void Dropdown::on_geometry_change()
 {
-       list->set_geometry(Geometry(0, -100, geom.w, 100));
+       resize_list();
 }
 
-void Dropdown::list_item_selected(unsigned index, const std::string &item)
+void Dropdown::resize_list()
 {
-       text=item;
+       // XXX This is a hack.
+       unsigned n_items=list.get_n_items();
+       const Style &stl=list.get_style();
+       const GL::Font &font=*stl.get_font();
+       unsigned h=min(max(n_items, 1U), 10U)*static_cast<unsigned>((font.get_ascent()-font.get_descent())*font.get_default_size());
+       for(std::list<Part>::const_iterator i=stl.get_parts().begin(); i!=stl.get_parts().end(); ++i)
+               if(i->get_name()=="items")
+               {
+                       const Sides &margin=i->get_margin();
+                       h+=margin.top+margin.bottom;
+               }
+       list.set_geometry(Geometry(0, -h, geom.w, h));
+}
 
-       list_active=false;
-       state=NORMAL;
-       if(parent)
-               parent->ungrab_pointer(*this);
+void Dropdown::list_item_selected(unsigned index, const std::string &item)
+{
+       if(dropped)
+       {
+               dropped=false;
+               state&=~ACTIVE;
+               signal_ungrab_pointer.emit();
+       }
 
        signal_item_selected.emit(index, item);
 }
@@ -125,7 +146,7 @@ Dropdown::Loader::Loader(Dropdown &d):
 
 void Dropdown::Loader::item(const string &str)
 {
-       static_cast<Dropdown &>(wdg).append(str);
+       dynamic_cast<Dropdown &>(wdg).append(str);
 }
 
 } // namespace GLtk