-/* $Id$
-
-This file is part of libmspgltk
-Copyright © 2009-2011 Mikko Rasa, Mikkosoft Productions
-Distributed under the LGPL
-*/
-
#include "container.h"
+#include "part.h"
using namespace std;
namespace Msp {
namespace GLtk {
+hierarchy_error::hierarchy_error(const string &w):
+ logic_error(w)
+{ }
+
+
Container::Container():
click_focus(0),
- click_button(0)
+ click_button(0),
+ pointer_focus(0),
+ pointer_grabbed(false),
+ input_focus(0),
+ touch_focus(0)
{ }
Container::~Container()
return;
}
- throw InvalidState("That Widget is not in this Container");
+ throw hierarchy_error("widget not in container");
}
Container::Child *Container::create_child(Widget *wdg)
return new Child(*this, wdg);
}
+Geometry Container::determine_child_geometry(const Widget &child, const Part &part) const
+{
+ Geometry pgeom = part.get_geometry();
+ if(!pgeom.w || !pgeom.h)
+ {
+ Geometry cgeom;
+ child.autosize(cgeom);
+ if(!pgeom.w)
+ pgeom.w = cgeom.w;
+ if(!pgeom.h)
+ pgeom.h = cgeom.h;
+ }
+
+ part.get_alignment().apply(pgeom, geom, part.get_margin());
+ return pgeom;
+}
+
+void Container::autosize_child(const Widget &child, const Part &part, Geometry &ageom) const
+{
+ Geometry cgeom = determine_child_geometry(child, part);
+ const Sides &margin = part.get_margin();
+ ageom.w = max(ageom.w, cgeom.w+margin.left+margin.right);
+ ageom.h = max(ageom.h, cgeom.h+margin.top+margin.bottom);
+}
+
+void Container::reposition_child(Widget &child, const Part &part) const
+{
+ child.set_geometry(determine_child_geometry(child, part));
+}
+
list<Widget *> Container::get_children() const
{
list<Widget *> result;
return result;
}
-Widget *Container::get_child_at(int x, int y)
+Widget *Container::get_child_at(int x, int y) const
{
- for(list<Child *>::iterator i=children.end(); i!=children.begin();)
+ for(list<Child *>::const_iterator i=children.end(); i!=children.begin();)
if((*--i)->widget->is_visible() && (*i)->widget->get_geometry().is_inside(x, y))
return (*i)->widget;
return 0;
}
-Widget *Container::get_descendant_at(int x, int y)
+Widget *Container::get_descendant_at(int x, int y) const
{
Widget *wdg = get_child_at(x, y);
if(Container *cont = dynamic_cast<Container *>(wdg))
return wdg;
}
-void Container::button_press(int x, int y, unsigned btn)
+void Container::raise(Widget &wdg)
+{
+ for(list<Child *>::iterator i=children.begin(); i!=children.end(); ++i)
+ if((*i)->widget==&wdg)
+ {
+ children.splice(children.end(), children, i);
+ return;
+ }
+
+ throw hierarchy_error("widget not in container");
+}
+
+void Container::set_pointer_focus(Widget *wdg)
{
- if(click_focus)
+ if(wdg!=pointer_focus)
{
- const Geometry &cgeom = click_focus->get_geometry();
- click_focus->button_press(x-cgeom.x, y-cgeom.y, btn);
+ if(pointer_focus)
+ pointer_focus->pointer_leave();
+
+ pointer_focus = wdg;
+
+ if(pointer_focus)
+ pointer_focus->pointer_enter();
}
- else
+}
+
+void Container::set_input_focus(Widget *wdg)
+{
+ if(wdg!=input_focus)
{
- if(Widget *wdg = get_child_at(x, y))
- {
- click_focus = wdg;
- click_button = btn;
+ if(input_focus)
+ input_focus->focus_out();
+
+ input_focus = wdg;
- const Geometry &cgeom = wdg->get_geometry();
- wdg->button_press(x-cgeom.x, y-cgeom.y, btn);
+ if(input_focus)
+ {
+ raise(*wdg);
+ input_focus->focus_in();
}
}
}
-void Container::button_release(int x, int y, unsigned btn)
+Widget *Container::get_final_input_focus() const
+{
+ if(Container *container = dynamic_cast<Container *>(input_focus))
+ if(Widget *focus = container->get_final_input_focus())
+ return focus;
+
+ return input_focus;
+}
+
+void Container::button_press(int x, int y, unsigned btn)
{
- if(click_focus)
+ if(Widget *child = get_pointer_target(x, y, false))
{
- Widget *wdg = click_focus;
+ if(!click_focus)
+ {
+ set_pointer_focus(child);
+ if(child->is_focusable())
+ set_input_focus(child);
- if(btn==click_button)
- click_focus = 0;
+ click_focus = child;
+ click_button = btn;
+ }
- const Geometry &cgeom = wdg->get_geometry();
- wdg->button_release(x-cgeom.x, y-cgeom.y, btn);
+ const Geometry &cgeom = child->get_geometry();
+ child->button_press(x-cgeom.x, y-cgeom.y, btn);
}
- else
+}
+
+void Container::button_release(int x, int y, unsigned btn)
+{
+ if(Widget *child = get_pointer_target(x, y, false))
{
- if(Widget *wdg = get_child_at(x, y))
+ if(child==click_focus && btn==click_button)
{
- const Geometry &cgeom = wdg->get_geometry();
- wdg->button_release(x-cgeom.x, y-cgeom.y, btn);
+ click_focus = 0;
+ if(!pointer_focus)
+ set_pointer_focus(get_child_at(x, y));
}
+
+ const Geometry &cgeom = child->get_geometry();
+ child->button_release(x-cgeom.x, y-cgeom.y, btn);
}
}
void Container::pointer_motion(int x, int y)
{
- if(click_focus)
+ Widget *child = get_pointer_target(x, y, false);
+ if(!pointer_grabbed)
+ set_pointer_focus((!click_focus || child->get_geometry().is_inside(x, y)) ? child : 0);
+
+ if(child)
{
- const Geometry &cgeom = click_focus->get_geometry();
- click_focus->pointer_motion(x-cgeom.x, y-cgeom.y);
+ const Geometry &cgeom = child->get_geometry();
+ child->pointer_motion(x-cgeom.x, y-cgeom.y);
}
+}
+
+Widget *Container::get_pointer_target(int x, int y, bool touch) const
+{
+ if(pointer_grabbed)
+ return pointer_focus;
+ else if(!touch && click_focus)
+ return click_focus;
+ else if(touch && touch_focus)
+ return touch_focus;
else
{
- Widget *wdg = get_child_at(x, y);
- if(wdg)
- {
- const Geometry &cgeom = wdg->get_geometry();
- wdg->pointer_motion(x-cgeom.x, y-cgeom.y);
- }
+ Widget *child = get_child_at(x, y);
+ if(child && child->is_enabled())
+ return child;
+ else
+ return 0;
}
}
void Container::pointer_leave()
{
Widget::pointer_leave();
- click_focus = 0;
+ set_pointer_focus(0);
+}
+
+void Container::touch_press(int x, int y, unsigned finger)
+{
+ if(Widget *child = get_pointer_target(x, y, true))
+ {
+ // TODO track focus for each finger separately
+ if(!touch_focus)
+ touch_focus = child;
+
+ const Geometry &cgeom = child->get_geometry();
+ child->touch_press(x-cgeom.x, y-cgeom.y, finger);
+ }
+}
+
+void Container::touch_release(int x, int y, unsigned finger)
+{
+ if(Widget *child = get_pointer_target(x, y, true))
+ {
+ // TODO track focus for each finger separately
+ if(child==touch_focus)
+ touch_focus = 0;
+
+ const Geometry &cgeom = child->get_geometry();
+ child->touch_release(x-cgeom.x, y-cgeom.y, finger);
+ }
+}
+
+void Container::touch_motion(int x, int y, unsigned finger)
+{
+ if(Widget *child = get_pointer_target(x, y, true))
+ {
+ const Geometry &cgeom = child->get_geometry();
+ child->touch_motion(x-cgeom.x, y-cgeom.y, finger);
+ }
+}
+
+bool Container::key_press(unsigned key, unsigned mod)
+{
+ if(input_focus)
+ return input_focus->key_press(key, mod);
+ else
+ return false;
+}
+
+bool Container::key_release(unsigned key, unsigned mod)
+{
+ if(input_focus)
+ return input_focus->key_release(key, mod);
+ else
+ return false;
+}
+
+bool Container::character(wchar_t ch)
+{
+ if(input_focus)
+ return input_focus->character(ch);
+ else
+ return false;
+}
+
+void Container::focus_out()
+{
+ set_input_focus(0);
+ Widget::focus_out();
+}
+
+bool Container::navigate(Navigation nav)
+{
+ if(input_focus && input_focus->navigate(nav))
+ return true;
+
+ if(nav==NAV_UP || nav==NAV_DOWN || nav==NAV_LEFT || nav==NAV_RIGHT)
+ {
+ int x = geom.w/2;
+ int y = geom.h/2;
+ if(input_focus)
+ {
+ const Geometry &fgeom = input_focus->get_geometry();
+ x = fgeom.x+fgeom.w/2;
+ y = fgeom.y+fgeom.h/2;
+ }
+ else if(nav==NAV_UP)
+ y = 0;
+ else if(nav==NAV_DOWN)
+ y = geom.h;
+ else if(nav==NAV_RIGHT)
+ x = 0;
+ else if(nav==NAV_LEFT)
+ x = geom.w;
+
+ Widget *sibling = 0;
+ int best_score = 0;
+ for(list<Child *>::const_iterator i=children.begin(); i!=children.end(); ++i)
+ {
+ if((*i)->widget==input_focus || !(*i)->widget->is_focusable())
+ continue;
+
+ const Geometry &cgeom = (*i)->widget->get_geometry();
+ int dx = cgeom.x+cgeom.w/2-x;
+ int dy = cgeom.y+cgeom.h/2-y;
+
+ int score = -1;
+ if(nav==NAV_UP && dy>0)
+ score = dy+abs(dx)*4;
+ else if(nav==NAV_DOWN && dy<0)
+ score = -dy+abs(dx)*4;
+ else if(nav==NAV_RIGHT && dx>0)
+ score = dx+abs(dy)*4;
+ else if(nav==NAV_LEFT && dx<0)
+ score = -dx+abs(dy)*4;
+
+ if(score>0 && (!sibling || score<best_score))
+ {
+ sibling = (*i)->widget;
+ best_score = score;
+ }
+ }
+
+ if(sibling)
+ {
+ set_input_focus(sibling);
+ if(Container *container = dynamic_cast<Container *>(sibling))
+ container->navigate(nav);
+ return true;
+ }
+ }
+
+ return false;
}
void Container::on_reparent()
widget(w)
{
widget->signal_visibility_changed.connect(sigc::mem_fun(this, &Child::visibility_changed));
+ widget->signal_request_focus.connect(sigc::mem_fun(this, &Child::request_focus));
+ widget->signal_grab_pointer.connect(sigc::mem_fun(this, &Child::grab_pointer));
+ widget->signal_ungrab_pointer.connect(sigc::mem_fun(this, &Child::ungrab_pointer));
}
Container::Child::~Child()
{
- if(widget==container.click_focus)
- container.click_focus = 0;
+ visibility_changed(false);
}
void Container::Child::visibility_changed(bool v)
{
- if(!v && widget==container.click_focus)
- container.click_focus = 0;
+ if(!v)
+ {
+ if(widget==container.click_focus)
+ container.click_focus = 0;
+ if(widget==container.pointer_focus)
+ container.set_pointer_focus(0);
+ if(widget==container.input_focus)
+ container.set_input_focus(0);
+ }
+}
+
+void Container::Child::request_focus()
+{
+ container.set_input_focus(widget);
+ if(container.parent && container.visible)
+ container.set_focus();
+}
+
+void Container::Child::grab_pointer()
+{
+ if(!container.pointer_grabbed)
+ {
+ container.set_pointer_focus(widget);
+ container.pointer_grabbed = true;
+ container.signal_grab_pointer.emit();
+ }
+}
+
+void Container::Child::ungrab_pointer()
+{
+ if(container.pointer_grabbed && container.pointer_focus==widget)
+ {
+ // XXX Should set to the widget under pointer
+ container.set_pointer_focus(0);
+ container.pointer_grabbed = false;
+ container.signal_ungrab_pointer.emit();
+ }
}
} // namespace GLtk