1 #include <msp/core/algorithm.h>
10 hierarchy_error::hierarchy_error(const string &w):
15 Container::~Container()
17 while(!children.empty())
18 delete children.front()->widget;
21 void Container::add(Widget &wdg)
24 children.push_back(create_child(&wdg));
25 if(wdg.get_animation_interval())
26 check_animation_interval();
27 children_rebuild_needed = true;
28 signal_rebuild_needed.emit();
32 void Container::remove(Widget &wdg)
34 auto i = find_if(children, [&wdg](const Child *c){ return c->widget==&wdg; });
36 throw hierarchy_error("widget not in container");
38 wdg.set_parent(nullptr);
41 if(wdg.get_animation_interval())
42 check_animation_interval();
43 on_child_removed(wdg);
46 Container::Child *Container::create_child(Widget *wdg)
48 return new Child(*this, wdg);
51 Geometry Container::determine_child_geometry(const Widget &child, const Part &part) const
53 Geometry pgeom = part.get_geometry();
54 if(!pgeom.w || !pgeom.h)
57 child.autosize(cgeom);
64 part.get_alignment().apply(pgeom, geom, part.get_margin());
68 void Container::autosize_child(const Widget &child, const Part &part, Geometry &ageom) const
70 Geometry cgeom = determine_child_geometry(child, part);
71 const Sides &margin = part.get_margin();
72 ageom.w = max(ageom.w, cgeom.w+margin.left+margin.right);
73 ageom.h = max(ageom.h, cgeom.h+margin.top+margin.bottom);
76 void Container::reposition_child(Widget &child, const Part &part) const
78 child.set_geometry(determine_child_geometry(child, part));
81 list<Widget *> Container::get_children() const
83 list<Widget *> result;
84 for(const Child *c: children)
85 result.push_back(c->widget);
89 Widget *Container::find_child_at(int x, int y) const
91 for(auto i=children.end(); i!=children.begin();)
92 if((*--i)->widget->is_visible() && (*i)->widget->get_geometry().is_inside(x, y))
98 Widget *Container::find_descendant_at(int x, int y) const
100 Widget *wdg = find_child_at(x, y);
101 if(Container *cont = dynamic_cast<Container *>(wdg))
103 const Geometry &cgeom = wdg->get_geometry();
104 Widget *wdg2 = cont->find_descendant_at(x-cgeom.x, y-cgeom.y);
111 void Container::raise(Widget &wdg)
113 auto i = find_if(children, [&wdg](const Child *c){ return c->widget==&wdg; });
114 if(i==children.end())
115 throw hierarchy_error("widget not in container");
117 children.splice(children.end(), children, i);
120 void Container::set_pointer_focus(Widget *wdg, bool grab)
122 if(wdg!=pointer_focus)
125 pointer_focus->pointer_leave();
128 pointer_grabbed = grab;
131 pointer_focus->pointer_enter();
134 pointer_grabbed = grab;
137 void Container::set_input_focus(Widget *wdg)
142 input_focus->focus_out();
145 on_input_focus_changed(input_focus);
148 input_focus->focus_in();
152 Widget *Container::get_final_input_focus() const
154 if(Container *container = dynamic_cast<Container *>(input_focus))
155 if(Widget *focus = container->get_final_input_focus())
161 void Container::check_animation_interval()
163 Time::TimeDelta shortest;
164 for(const Child *c: children)
166 const Time::TimeDelta &child_iv = c->widget->get_animation_interval();
167 if(child_iv && (!shortest || child_iv<shortest))
171 if(shortest!=anim_interval)
172 set_animation_interval(shortest);
175 void Container::rebuild_hierarchy()
177 Widget::rebuild_hierarchy();
179 if(children_rebuild_needed)
181 children_rebuild_needed = false;
182 for(Child *c: children)
183 c->widget->rebuild_hierarchy();
187 void Container::button_press(int x, int y, unsigned btn)
189 if(Widget *child = get_pointer_target(x, y, false))
193 set_pointer_focus(child);
194 if(child->is_focusable())
195 set_input_focus(child);
201 const Geometry &cgeom = child->get_geometry();
202 child->button_press(x-cgeom.x, y-cgeom.y, btn);
206 void Container::button_release(int x, int y, unsigned btn)
208 if(Widget *child = get_pointer_target(x, y, false))
210 if(child==click_focus && btn==click_button)
212 click_focus = nullptr;
214 set_pointer_focus(find_child_at(x, y));
217 const Geometry &cgeom = child->get_geometry();
218 child->button_release(x-cgeom.x, y-cgeom.y, btn);
222 void Container::pointer_motion(int x, int y)
224 Widget *child = get_pointer_target(x, y, false);
226 set_pointer_focus((child && child->get_geometry().is_inside(x, y)) ? child : nullptr);
230 const Geometry &cgeom = child->get_geometry();
231 child->pointer_motion(x-cgeom.x, y-cgeom.y);
235 Widget *Container::get_pointer_target(int x, int y, bool touch) const
238 return pointer_focus;
239 else if(!touch && click_focus)
241 else if(touch && touch_focus)
245 Widget *child = find_child_at(x, y);
246 if(child && child->is_enabled())
253 void Container::pointer_leave()
255 Widget::pointer_leave();
256 set_pointer_focus(nullptr);
259 void Container::touch_press(int x, int y, unsigned finger)
261 if(Widget *child = get_pointer_target(x, y, true))
263 // TODO track focus for each finger separately
267 const Geometry &cgeom = child->get_geometry();
268 child->touch_press(x-cgeom.x, y-cgeom.y, finger);
272 void Container::touch_release(int x, int y, unsigned finger)
274 if(Widget *child = get_pointer_target(x, y, true))
276 // TODO track focus for each finger separately
277 if(child==touch_focus)
278 touch_focus = nullptr;
280 const Geometry &cgeom = child->get_geometry();
281 child->touch_release(x-cgeom.x, y-cgeom.y, finger);
285 void Container::touch_motion(int x, int y, unsigned finger)
287 if(Widget *child = get_pointer_target(x, y, true))
289 const Geometry &cgeom = child->get_geometry();
290 child->touch_motion(x-cgeom.x, y-cgeom.y, finger);
294 bool Container::key_press(unsigned key, unsigned mod)
296 if(input_focus && input_focus->is_enabled())
297 return input_focus->key_press(key, mod);
302 bool Container::key_release(unsigned key, unsigned mod)
304 if(input_focus && input_focus->is_enabled())
305 return input_focus->key_release(key, mod);
310 bool Container::character(wchar_t ch)
312 if(input_focus && input_focus->is_enabled())
313 return input_focus->character(ch);
318 void Container::focus_in()
320 if(saved_input_focus && saved_input_focus->get_parent()==this)
321 set_input_focus(saved_input_focus);
325 void Container::focus_out()
327 saved_input_focus = input_focus;
328 set_input_focus(nullptr);
332 bool Container::navigate(Navigation nav)
334 if(input_focus && input_focus->is_enabled())
335 return input_focus->navigate(nav);
340 void Container::animate(const Time::TimeDelta &dt)
342 for(Child *c: children)
344 const Time::TimeDelta &child_iv = c->widget->get_animation_interval();
348 c->time_since_animate += dt;
349 if(c->time_since_animate>=child_iv)
351 Time::TimeDelta child_dt = c->time_since_animate;
352 c->time_since_animate = min(c->time_since_animate-child_iv, child_iv);
353 c->widget->animate(child_dt);
358 void Container::on_reparent()
360 for(const Child *c: children)
362 if(Container *o = dynamic_cast<Container *>(c->widget))
364 c->widget->update_style();
368 void Container::on_input_focus_changed(Widget *wdg)
375 Container::Child::Child(Container &c, Widget *w):
379 widget->signal_visibility_changed.connect(sigc::mem_fun(this, &Child::visibility_changed));
380 widget->signal_request_focus.connect(sigc::mem_fun(this, &Child::request_focus));
381 widget->signal_grab_pointer.connect(sigc::mem_fun(this, &Child::grab_pointer));
382 widget->signal_ungrab_pointer.connect(sigc::mem_fun(this, &Child::ungrab_pointer));
383 widget->signal_request_animation.connect(sigc::mem_fun(this, &Child::request_animation));
384 widget->signal_rebuild_needed.connect(sigc::mem_fun(this, &Child::rebuild_needed));
387 Container::Child::~Child()
389 visibility_changed(false);
392 void Container::Child::visibility_changed(bool v)
396 if(widget==container.click_focus)
397 container.click_focus = nullptr;
398 if(widget==container.pointer_focus)
399 container.set_pointer_focus(nullptr);
400 if(widget==container.input_focus)
401 container.set_input_focus(nullptr);
405 void Container::Child::request_focus()
407 if(container.parent && container.visible)
408 container.set_focus();
409 if(container.state&FOCUS)
410 container.set_input_focus(widget);
413 void Container::Child::grab_pointer()
415 if(!container.pointer_grabbed)
417 container.set_pointer_focus(widget, true);
418 container.signal_grab_pointer.emit();
422 void Container::Child::ungrab_pointer()
424 if(container.pointer_grabbed && container.pointer_focus==widget)
426 // XXX Should set to the widget under pointer
427 container.set_pointer_focus(nullptr);
428 container.signal_ungrab_pointer.emit();
432 void Container::Child::request_animation(const Time::TimeDelta &interval)
435 time_since_animate = Time::zero;
436 container.check_animation_interval();
439 void Container::Child::rebuild_needed()
441 container.children_rebuild_needed = true;
442 container.signal_rebuild_needed.emit();