Add a persistent view size attribute to List

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

diff --git a/source/dropdown.cpp b/source/dropdown.cpp
index cff5387408a2b7551d308f014fcf91f7e1f674c5..ce0ba71f642c45ca7f672e4bf8e80f78d8fb60ed 100644 (file)
--- a/source/dropdown.cpp
+++ b/source/dropdown.cpp
@@ -1,10 +1,3 @@
-/* $Id$
-
-This file is part of libmspgltk
-Copyright © 2007-2011  Mikko Rasa, Mikkosoft Productions
-Distributed under the LGPL
-*/
-
 #include <msp/gl/font.h>
 #include "dropdown.h"
 #include "list.h"
@@ -19,10 +12,23 @@ using namespace std;
 namespace Msp {
 namespace GLtk {
 
-Dropdown::Dropdown():
-       dropped(false)
+Dropdown::Dropdown()
+{
+       init();
+}
+
+Dropdown::Dropdown(ListData &d):
+       list(d)
 {
+       init();
+}
+
+void Dropdown::init()
+{
+       dropped = false;
+
        add(list);
+       list.set_view_all();
        list.signal_item_selected.connect(sigc::mem_fun(this, &Dropdown::list_item_selected));
        list.signal_autosize_changed.connect(sigc::mem_fun(this, &Dropdown::list_autosize_changed));
 }
@@ -33,67 +39,50 @@ void Dropdown::autosize()
                return;
 
        Widget::autosize();
+       list.autosize();
        geom.w = max(geom.w, list.get_geometry().w);
 
        if(const Part *text_part = style->get_part("text"))
        {
                const Sides &margin = text_part->get_margin();
-               const GL::Font *font = style->get_font();
-               float font_size = font->get_default_size();
-               unsigned line_height = static_cast<unsigned>((font->get_ascent()-font->get_descent())*font_size);
-               geom.h = max(geom.h, line_height+margin.top+margin.bottom);
-       }
-}
-
-void Dropdown::append(const string &item)
-{
-       list.append(item);
-}
-
-void Dropdown::insert(unsigned i, const string &v)
-{
-       list.insert(i, v);
-}
+               const GL::Font &font = style->get_font();
+               float font_size = style->get_font_size();
 
-void Dropdown::remove(unsigned i)
-{
-       list.remove(i);
-}
-
-void Dropdown::clear()
-{
-       list.clear();
-}
+               unsigned max_w = 0;
+               const ListData &data = list.get_data();
+               for(unsigned i=0; i<data.size(); ++i)
+               {
+                       unsigned w = static_cast<unsigned>(font.get_string_width(data.get_string(i))*font_size);
+                       max_w = max(max_w, w);
+               }
+               geom.w = max(geom.w, max_w+margin.left+margin.right);
 
-unsigned Dropdown::get_n_items() const
-{
-       return list.get_n_items();
-}
+               unsigned line_height = static_cast<unsigned>((font.get_ascent()-font.get_descent())*font_size);
+               geom.h = max(geom.h, line_height+margin.top+margin.bottom);
+       }
 
-void Dropdown::set_selected_index(int i)
-{
-       list.set_selected_index(i);
+       rebuild();
 }
 
-const string &Dropdown::get_selected() const
+void Dropdown::set_selected_index(int index)
 {
-       return list.get_selected();
+       list.set_selected_index(index);
+       if(index<0)
+               text.set(string());
 }
 
-int Dropdown::get_selected_index() const
+void Dropdown::rebuild_special(const Part &part)
 {
-       return list.get_selected_index();
+       if(part.get_name()=="text")
+               text.build(part, geom, part_cache);
+       else
+               Widget::rebuild_special(part);
 }
 
-void Dropdown::render_special(const Part &part) const
+void Dropdown::render_special(const Part &part, GL::Renderer &renderer) const
 {
-       if(part.get_name()=="text")
-       {
-               if(list.get_selected_index()>=0)
-                       Text(*style, list.get_selected()).render(part, geom);
-       }
-       else if(part.get_name()=="list" && dropped)
-               list.render();
+       if(part.get_name()=="list" && dropped)
+               list.render(renderer);
 }
 
 void Dropdown::button_press(int x, int y, unsigned btn)
@@ -104,14 +93,14 @@ void Dropdown::button_press(int x, int y, unsigned btn)
                if(!click_focus)
                {
                        dropped = false;
-                       state &= ~ACTIVE;
+                       clear_state(ACTIVE);
                        signal_ungrab_pointer.emit();
                }
        }
        else if(btn==1)
        {
                dropped = true;
-               state |= ACTIVE;
+               set_state(ACTIVE);
                signal_grab_pointer.emit();
        }
 }
@@ -123,6 +112,7 @@ void Dropdown::on_geometry_change()
 
 void Dropdown::on_style_change()
 {
+       text.set_style(style);
        resize_list();
 }
 
@@ -134,7 +124,7 @@ void Dropdown::list_autosize_changed()
 
 void Dropdown::resize_list()
 {
-       list.autosize_all();
+       list.autosize();
        Geometry lgeom = list.get_geometry();
        lgeom.x = 0;
        lgeom.y = -lgeom.h;
@@ -162,28 +152,31 @@ void Dropdown::resize_list()
        list.set_geometry(lgeom);
 }
 
-void Dropdown::list_item_selected(unsigned index, const std::string &item)
+void Dropdown::list_item_selected(unsigned index)
 {
        if(dropped)
        {
                dropped = false;
-               state &= ~ACTIVE;
+               clear_state(ACTIVE);
                signal_ungrab_pointer.emit();
        }
 
-       signal_item_selected.emit(index, item);
+       text.set(list.get_data().get_string(index));
+
+       signal_item_selected.emit(index);
+       rebuild();
 }
 
 
 Dropdown::Loader::Loader(Dropdown &d):
-       Widget::Loader(d)
+       DataFile::DerivedObjectLoader<Dropdown, Widget::Loader>(d)
 {
        add("item", &Loader::item);
 }
 
-void Dropdown::Loader::item(const string &str)
+void Dropdown::Loader::item(const string &v)
 {
-       dynamic_cast<Dropdown &>(obj).append(str);
+       dynamic_cast<BasicListData<string> &>(obj.list.get_data()).append(v);
 }
 
 } // namespace GLtk