1 #include <msp/core/algorithm.h>
10 hierarchy_error::hierarchy_error(const string &w):
15 Container::~Container()
17 // Clear children here while members are still valid
18 while(!children.empty())
20 if(children.back()->own_widget)
21 /* Avoid destroying the unique_ptr for the widget from within its own
23 unique_ptr<Widget> w = move(children.back()->own_widget);
29 void Container::add(unique_ptr<Widget> wdg)
31 add_child(*wdg).own_widget = move(wdg);
34 void Container::remove(Widget &wdg)
36 auto i = find_if(children, [&wdg](const unique_ptr<Child> &c){ return c->widget==&wdg; });
38 throw hierarchy_error("widget not in container");
40 unique_ptr<Widget> owned = move((*i)->own_widget);
41 if(&wdg==saved_input_focus)
42 saved_input_focus = nullptr;
43 wdg.set_parent(nullptr);
45 if(wdg.get_animation_interval())
46 check_animation_interval();
47 on_child_removed(wdg);
50 Container::Child &Container::add_child(Widget &wdg)
53 children.push_back(make_unique<Child>(*this, &wdg));
54 if(wdg.get_animation_interval())
55 check_animation_interval();
56 children_rebuild_needed = true;
57 signal_rebuild_needed.emit();
59 return *children.back();
62 Geometry Container::determine_child_geometry(const Widget &child, const Part &part) const
64 Geometry pgeom = part.get_geometry();
65 if(!pgeom.w || !pgeom.h)
68 child.autosize(cgeom);
75 part.get_alignment().apply(pgeom, geom, part.get_margin());
79 void Container::autosize_child(const Widget &child, const Part &part, Geometry &ageom) const
81 Geometry cgeom = determine_child_geometry(child, part);
82 const Sides &margin = part.get_margin();
83 ageom.w = max(ageom.w, cgeom.w+margin.left+margin.right);
84 ageom.h = max(ageom.h, cgeom.h+margin.top+margin.bottom);
87 void Container::reposition_child(Widget &child, const Part &part) const
89 child.set_geometry(determine_child_geometry(child, part));
92 vector<Widget *> Container::get_children() const
94 vector<Widget *> result;
95 for(const unique_ptr<Child> &c: children)
96 result.push_back(c->widget);
100 Widget *Container::find_child_at(int x, int y) const
102 for(auto i=children.end(); i!=children.begin();)
103 if((*--i)->widget->is_visible() && (*i)->widget->get_geometry().is_inside(x, y))
109 Widget *Container::find_descendant_at(int x, int y) const
111 Widget *wdg = find_child_at(x, y);
112 if(Container *cont = dynamic_cast<Container *>(wdg))
114 const Geometry &cgeom = wdg->get_geometry();
115 if(Widget *wdg2 = cont->find_descendant_at(x-cgeom.x, y-cgeom.y))
121 void Container::raise(Widget &wdg)
123 auto i = find_if(children, [&wdg](const unique_ptr<Child> &c){ return c->widget==&wdg; });
124 if(i==children.end())
125 throw hierarchy_error("widget not in container");
127 unique_ptr<Child> c = move(*i);
129 children.push_back(move(c));
132 void Container::set_pointer_focus(Widget *wdg, bool grab)
134 if(wdg!=pointer_focus)
137 pointer_focus->pointer_leave();
140 pointer_grabbed = grab;
143 pointer_focus->pointer_enter();
146 pointer_grabbed = grab;
149 void Container::set_input_focus(Widget *wdg)
154 input_focus->focus_out();
157 on_input_focus_changed(input_focus);
160 input_focus->focus_in();
164 Widget *Container::get_final_input_focus() const
166 if(Container *container = dynamic_cast<Container *>(input_focus))
167 if(Widget *focus = container->get_final_input_focus())
173 void Container::check_animation_interval()
175 Time::TimeDelta shortest;
176 for(const unique_ptr<Child> &c: children)
178 const Time::TimeDelta &child_iv = c->widget->get_animation_interval();
179 if(child_iv && (!shortest || child_iv<shortest))
183 if(shortest!=anim_interval)
184 set_animation_interval(shortest);
187 void Container::rebuild_hierarchy()
189 Widget::rebuild_hierarchy();
191 if(children_rebuild_needed)
193 children_rebuild_needed = false;
194 for(const unique_ptr<Child> &c: children)
195 c->widget->rebuild_hierarchy();
199 void Container::button_press(int x, int y, unsigned btn)
201 if(Widget *child = get_pointer_target(x, y, false))
205 set_pointer_focus(child);
206 if(child->is_focusable())
207 set_input_focus(child);
213 const Geometry &cgeom = child->get_geometry();
214 child->button_press(x-cgeom.x, y-cgeom.y, btn);
218 void Container::button_release(int x, int y, unsigned btn)
220 if(Widget *child = get_pointer_target(x, y, false))
222 if(child==click_focus && btn==click_button)
224 click_focus = nullptr;
226 set_pointer_focus(find_child_at(x, y));
229 const Geometry &cgeom = child->get_geometry();
230 child->button_release(x-cgeom.x, y-cgeom.y, btn);
234 void Container::pointer_motion(int x, int y)
236 Widget *child = get_pointer_target(x, y, false);
238 set_pointer_focus((child && child->get_geometry().is_inside(x, y)) ? child : nullptr);
242 const Geometry &cgeom = child->get_geometry();
243 child->pointer_motion(x-cgeom.x, y-cgeom.y);
247 Widget *Container::get_pointer_target(int x, int y, bool touch) const
250 return pointer_focus;
251 else if(!touch && click_focus)
253 else if(touch && touch_focus)
257 Widget *child = find_child_at(x, y);
258 if(child && child->is_enabled())
265 void Container::pointer_leave()
267 Widget::pointer_leave();
268 set_pointer_focus(nullptr);
271 void Container::touch_press(int x, int y, unsigned finger)
273 if(Widget *child = get_pointer_target(x, y, true))
275 // TODO track focus for each finger separately
279 const Geometry &cgeom = child->get_geometry();
280 child->touch_press(x-cgeom.x, y-cgeom.y, finger);
284 void Container::touch_release(int x, int y, unsigned finger)
286 if(Widget *child = get_pointer_target(x, y, true))
288 // TODO track focus for each finger separately
289 if(child==touch_focus)
290 touch_focus = nullptr;
292 const Geometry &cgeom = child->get_geometry();
293 child->touch_release(x-cgeom.x, y-cgeom.y, finger);
297 void Container::touch_motion(int x, int y, unsigned finger)
299 if(Widget *child = get_pointer_target(x, y, true))
301 const Geometry &cgeom = child->get_geometry();
302 child->touch_motion(x-cgeom.x, y-cgeom.y, finger);
306 bool Container::key_press(unsigned key, unsigned mod)
308 if(input_focus && input_focus->is_enabled())
309 return input_focus->key_press(key, mod);
314 bool Container::key_release(unsigned key, unsigned mod)
316 if(input_focus && input_focus->is_enabled())
317 return input_focus->key_release(key, mod);
322 bool Container::character(wchar_t ch)
324 if(input_focus && input_focus->is_enabled())
325 return input_focus->character(ch);
330 void Container::focus_in()
332 if(saved_input_focus)
333 set_input_focus(saved_input_focus);
337 void Container::focus_out()
339 saved_input_focus = input_focus;
340 set_input_focus(nullptr);
344 bool Container::navigate(Navigation nav)
346 if(input_focus && input_focus->is_enabled())
347 return input_focus->navigate(nav);
352 void Container::animate(const Time::TimeDelta &dt)
354 for(const unique_ptr<Child> &c: children)
356 const Time::TimeDelta &child_iv = c->widget->get_animation_interval();
360 c->time_since_animate += dt;
361 if(c->time_since_animate>=child_iv)
363 Time::TimeDelta child_dt = c->time_since_animate;
364 c->time_since_animate = min(c->time_since_animate-child_iv, child_iv);
365 c->widget->animate(child_dt);
370 void Container::on_reparent()
372 for(const unique_ptr<Child> &c: children)
374 if(Container *o = dynamic_cast<Container *>(c->widget))
376 c->widget->update_style();
380 void Container::on_input_focus_changed(Widget *wdg)
387 Container::Child::Child(Container &c, Widget *w):
391 widget->signal_visibility_changed.connect(sigc::mem_fun(this, &Child::visibility_changed));
392 widget->signal_request_focus.connect(sigc::mem_fun(this, &Child::request_focus));
393 widget->signal_grab_pointer.connect(sigc::mem_fun(this, &Child::grab_pointer));
394 widget->signal_ungrab_pointer.connect(sigc::mem_fun(this, &Child::ungrab_pointer));
395 widget->signal_request_animation.connect(sigc::mem_fun(this, &Child::request_animation));
396 widget->signal_rebuild_needed.connect(sigc::mem_fun(this, &Child::rebuild_needed));
399 Container::Child::Child(Container &c, unique_ptr<Widget> w):
402 own_widget = move(w);
405 Container::Child::~Child()
407 visibility_changed(false);
410 void Container::Child::visibility_changed(bool v)
414 if(widget==container.click_focus)
415 container.click_focus = nullptr;
416 if(widget==container.pointer_focus)
417 container.set_pointer_focus(nullptr);
418 if(widget==container.input_focus)
419 container.set_input_focus(nullptr);
423 void Container::Child::request_focus()
425 if(container.parent && container.visible)
426 container.set_focus();
427 if(container.state&FOCUS)
428 container.set_input_focus(widget);
431 void Container::Child::grab_pointer()
433 if(!container.pointer_grabbed)
435 container.set_pointer_focus(widget, true);
436 container.signal_grab_pointer.emit();
440 void Container::Child::ungrab_pointer()
442 if(container.pointer_grabbed && container.pointer_focus==widget)
444 // XXX Should set to the widget under pointer
445 container.set_pointer_focus(nullptr);
446 container.signal_ungrab_pointer.emit();
450 void Container::Child::request_animation(const Time::TimeDelta &interval)
453 time_since_animate = Time::zero;
454 container.check_animation_interval();
457 void Container::Child::rebuild_needed()
459 container.children_rebuild_needed = true;
460 container.signal_rebuild_needed.emit();