nuclear@6: /*
nuclear@6: GoatKit - a themable/animated widget toolkit for games
nuclear@6: Copyright (C) 2014  John Tsiombikas <nuclear@member.fsf.org>
nuclear@6: 
nuclear@6: This program is free software: you can redistribute it and/or modify
nuclear@6: it under the terms of the GNU Lesser General Public License as published by
nuclear@6: the Free Software Foundation, either version 3 of the License, or
nuclear@6: (at your option) any later version.
nuclear@6: 
nuclear@6: This program is distributed in the hope that it will be useful,
nuclear@6: but WITHOUT ANY WARRANTY; without even the implied warranty of
nuclear@6: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
nuclear@6: GNU Lesser General Public License for more details.
nuclear@6: 
nuclear@6: You should have received a copy of the GNU Lesser General Public License
nuclear@6: along with this program.  If not, see <http://www.gnu.org/licenses/>.
nuclear@6: */
nuclear@6: #include <stdio.h>
nuclear@6: #include <stdlib.h>
nuclear@6: #include <string.h>
nuclear@6: #include <vector>
nuclear@6: #include "screen.h"
nuclear@6: #include "widget.h"
nuclear@15: #include "boolanm.h"
nuclear@6: 
nuclear@6: #define MAX_BUTTONS		16
nuclear@6: 
nuclear@6: namespace goatkit {
nuclear@6: 
nuclear@6: struct ScreenImpl {
nuclear@15: 	BoolAnim visible;
nuclear@6: 	std::vector<Widget*> widgets;
nuclear@6: 	BBox box;
nuclear@6: 
nuclear@6: 	Widget *inp_focused, *over, *pressed[MAX_BUTTONS];
nuclear@6: 	Widget *mgrab;
nuclear@6: };
nuclear@6: 
nuclear@6: static Vec2 world_to_scr(const ScreenImpl *scr, const Vec2 &v);
nuclear@6: //static Vec2 scr_to_world(const ScreenImpl *scr, const Vec2 &v)
nuclear@6: 
nuclear@6: Screen::Screen()
nuclear@6: {
nuclear@6: 	scr = new ScreenImpl;
nuclear@6: 
nuclear@6: 	scr->box.bmin = Vec2(0, 0);
nuclear@6: 	scr->box.bmax = Vec2(1, 1);
nuclear@6: 
nuclear@6: 	scr->inp_focused = scr->over = 0;
nuclear@6: 	for(int i=0; i<MAX_BUTTONS; i++) {
nuclear@6: 		scr->pressed[i] = 0;
nuclear@6: 	}
nuclear@6: 
nuclear@6: 	scr->visible = true;
nuclear@6: 	scr->mgrab = 0;
nuclear@6: }
nuclear@6: 
nuclear@6: Screen::~Screen()
nuclear@6: {
nuclear@6: 	delete scr;
nuclear@6: }
nuclear@6: 
nuclear@6: void Screen::set_position(float x, float y)
nuclear@6: {
nuclear@6: 	set_position(Vec2(x, y));
nuclear@6: }
nuclear@6: 
nuclear@6: void Screen::set_position(const Vec2 &pos)
nuclear@6: {
nuclear@6: 	Vec2 sz = get_size();
nuclear@6: 
nuclear@6: 	scr->box.bmin = pos;
nuclear@6: 	scr->box.bmax.x = pos.x + sz.x;
nuclear@6: 	scr->box.bmax.y = pos.y + sz.y;
nuclear@6: }
nuclear@6: 
nuclear@6: const Vec2 &Screen::get_position() const
nuclear@6: {
nuclear@6: 	return scr->box.bmin;
nuclear@6: }
nuclear@6: 
nuclear@6: void Screen::set_size(float x, float y)
nuclear@6: {
nuclear@6: 	set_size(Vec2(x, y));
nuclear@6: }
nuclear@6: 
nuclear@6: void Screen::set_size(const Vec2 &sz)
nuclear@6: {
nuclear@6: 	scr->box.bmax.x = scr->box.bmin.x + sz.x;
nuclear@6: 	scr->box.bmax.y = scr->box.bmin.y + sz.y;
nuclear@6: }
nuclear@6: 
nuclear@6: const Vec2 Screen::get_size() const
nuclear@6: {
nuclear@6: 	return Vec2(scr->box.bmax.x - scr->box.bmin.x,
nuclear@6: 			scr->box.bmax.y - scr->box.bmin.y);
nuclear@6: }
nuclear@6: 
nuclear@6: const BBox &Screen::get_box() const
nuclear@6: {
nuclear@6: 	return scr->box;
nuclear@6: }
nuclear@6: 
nuclear@6: void Screen::add_widget(Widget *w)
nuclear@6: {
nuclear@6: 	scr->widgets.push_back(w);
nuclear@6: 	if(scr->visible) {
nuclear@6: 		w->show();
nuclear@6: 	} else {
nuclear@6: 		w->hide();
nuclear@6: 	}
nuclear@6: 
nuclear@6: 	w->set_screen(this);
nuclear@6: }
nuclear@6: 
nuclear@6: int Screen::get_widget_count() const
nuclear@6: {
nuclear@6: 	return (int)scr->widgets.size();
nuclear@6: }
nuclear@6: 
nuclear@6: Widget *Screen::get_widget(int idx) const
nuclear@6: {
nuclear@6: 	if(idx < 0 || idx >= (int)scr->widgets.size()) {
nuclear@6: 		return 0;
nuclear@6: 	}
nuclear@6: 	return scr->widgets[idx];
nuclear@6: }
nuclear@6: 
nuclear@6: Widget *Screen::get_widget(const char *name) const
nuclear@6: {
nuclear@6: 	for(size_t i=0; i<scr->widgets.size(); i++) {
nuclear@6: 		if(strcmp(scr->widgets[i]->get_name(), name) == 0) {
nuclear@6: 			return scr->widgets[i];
nuclear@6: 		}
nuclear@6: 	}
nuclear@6: 	return 0;
nuclear@6: }
nuclear@6: 
nuclear@6: void Screen::show()
nuclear@6: {
nuclear@15: 	scr->visible.change(true);
nuclear@6: 
nuclear@6: 	for(size_t i=0; i<scr->widgets.size(); i++) {
nuclear@6: 		scr->widgets[i]->show();
nuclear@6: 	}
nuclear@6: }
nuclear@6: 
nuclear@6: void Screen::hide()
nuclear@6: {
nuclear@15: 	scr->visible.change(false);
nuclear@6: 
nuclear@6: 	for(size_t i=0; i<scr->widgets.size(); i++) {
nuclear@6: 		scr->widgets[i]->hide();
nuclear@6: 	}
nuclear@6: }
nuclear@6: 
nuclear@6: bool Screen::is_visible() const
nuclear@6: {
nuclear@6: 	return scr->visible;
nuclear@6: }
nuclear@6: 
nuclear@15: float Screen::get_visibility() const
nuclear@15: {
nuclear@15: 	return scr->visible.get_value();
nuclear@15: }
nuclear@15: 
nuclear@15: void Screen::set_visibility_transition(long msec)
nuclear@15: {
nuclear@15: 	scr->visible.set_transition_duration(msec);
nuclear@15: 	for(size_t i=0; i<scr->widgets.size(); i++) {
nuclear@15: 		scr->widgets[i]->set_visibility_transition(msec);
nuclear@15: 	}
nuclear@15: }
nuclear@15: 
nuclear@15: long Screen::get_visibility_transition() const
nuclear@15: {
nuclear@15: 	return scr->visible.get_transition_duration();
nuclear@15: }
nuclear@15: 
nuclear@6: bool Screen::grab_mouse(Widget *w)
nuclear@6: {
nuclear@6: 	if(!scr->mgrab || !w) {
nuclear@6: 		scr->mgrab = w;
nuclear@6: 		return true;
nuclear@6: 	}
nuclear@6: 	return false;
nuclear@6: }
nuclear@6: 
nuclear@6: void Screen::draw() const
nuclear@6: {
nuclear@6: 	for(size_t i=0; i<scr->widgets.size(); i++) {
nuclear@6: 		scr->widgets[i]->draw();
nuclear@6: 	}
nuclear@6: }
nuclear@6: 
nuclear@6: static Widget *find_widget_at(const ScreenImpl *scr, const Vec2 &pt)
nuclear@6: {
nuclear@6: 	for(size_t i=0; i<scr->widgets.size(); i++) {
nuclear@6: 		Widget *w = scr->widgets[i];
nuclear@6: 
nuclear@6: 		if(w->hit_test(pt)) {
nuclear@6: 			return w;
nuclear@6: 		}
nuclear@6: 	}
nuclear@6: 	return 0;
nuclear@6: }
nuclear@6: 
nuclear@6: void Screen::sysev_keyboard(int key, bool press)
nuclear@6: {
nuclear@6: 	Event ev;
nuclear@6: 
nuclear@6: 	if(scr->inp_focused) {
nuclear@6: 		ev.type = EV_KEY;
nuclear@6: 		ev.key.key = key;
nuclear@6: 		ev.key.press = press;
nuclear@6: 		scr->inp_focused->handle_event(ev);
nuclear@6: 	}
nuclear@6: }
nuclear@6: 
nuclear@6: void Screen::sysev_mouse_button(int bn, bool press, float x, float y)
nuclear@6: {
nuclear@6: 	Event ev;
nuclear@6: 	Vec2 pt = world_to_scr(scr, Vec2(x, y));
nuclear@6: 	Widget *new_over = scr->mgrab ? scr->mgrab : find_widget_at(scr, pt);
nuclear@6: 
nuclear@6: 	ev.type = EV_MOUSE_BUTTON;
nuclear@6: 	ev.button.button = bn;
nuclear@6: 	ev.button.pos = pt;
nuclear@6: 	ev.button.press = press;
nuclear@6: 
nuclear@6: 	if(press) {
nuclear@6: 		if(bn == 0) {
nuclear@6: 			// left click gives input focus
nuclear@6: 			// TODO: add input focus event in widget
nuclear@6: 			if(new_over && new_over != scr->inp_focused && new_over->can_focus()) {
nuclear@6: 				printf("input focus %p -> %p\n", (void*)scr->inp_focused, (void*)new_over);
nuclear@6: 				new_over->focusin();
nuclear@6: 
nuclear@6: 				if(scr->inp_focused) {
nuclear@6: 					scr->inp_focused->focusout();
nuclear@6: 				}
nuclear@6: 				scr->inp_focused = new_over;
nuclear@6: 			}
nuclear@6: 		}
nuclear@6: 
nuclear@6: 		scr->pressed[bn] = new_over;
nuclear@6: 		scr->over = new_over;
nuclear@6: 
nuclear@6: 		if(new_over) {
nuclear@6: 			new_over->handle_event(ev);
nuclear@6: 		}
nuclear@6: 
nuclear@6: 	} else {
nuclear@6: 		// send the mouse release event to the widget that got the matching press
nuclear@6: 		if(scr->pressed[bn]) {
nuclear@6: 			scr->pressed[bn]->handle_event(ev);
nuclear@6: 			scr->pressed[bn] = 0;
nuclear@6: 		}
nuclear@6: 	}
nuclear@6: 
nuclear@6: 	// if we're not over the same widget any more send the leave/enter events
nuclear@6: 	// TODO also add drag/drop events
nuclear@6: 	if(scr->over != new_over) {
nuclear@6: 		ev.type = EV_MOUSE_FOCUS;
nuclear@6: 		if(scr->over) {
nuclear@6: 			ev.focus.enter = false;
nuclear@6: 			scr->over->handle_event(ev);
nuclear@6: 		}
nuclear@6: 		if(new_over) {
nuclear@6: 			ev.focus.enter = true;
nuclear@6: 			new_over->handle_event(ev);
nuclear@6: 		}
nuclear@6: 		scr->over = new_over;
nuclear@6: 	}
nuclear@6: }
nuclear@6: 
nuclear@6: void Screen::sysev_mouse_motion(float x, float y)
nuclear@6: {
nuclear@6: 	Event ev;
nuclear@6: 	Vec2 pt = world_to_scr(scr, Vec2(x, y));
nuclear@6: 	Widget *new_over = scr->mgrab ? scr->mgrab : find_widget_at(scr, pt);
nuclear@6: 
nuclear@6: 	// if we're not over the same widget any more send the leave/enter events
nuclear@6: 	if(scr->over != new_over) {
nuclear@6: 		ev.type = EV_MOUSE_FOCUS;
nuclear@6: 		if(scr->over) {
nuclear@6: 			ev.focus.enter = false;
nuclear@6: 			scr->over->handle_event(ev);
nuclear@6: 		}
nuclear@6: 		if(new_over) {
nuclear@6: 			ev.focus.enter = true;
nuclear@6: 			new_over->handle_event(ev);
nuclear@6: 		}
nuclear@6: 		scr->over = new_over;
nuclear@6: 	}
nuclear@6: 
nuclear@6: 	if(new_over) {
nuclear@6: 		// send motion event
nuclear@6: 		ev.type = EV_MOUSE_MOTION;
nuclear@6: 		ev.motion.pos = pt;
nuclear@6: 		new_over->handle_event(ev);
nuclear@6: 	}
nuclear@6: }
nuclear@6: 
nuclear@6: static Vec2 world_to_scr(const ScreenImpl *scr, const Vec2 &v)
nuclear@6: {
nuclear@6: 	return Vec2(v.x - scr->box.bmin.x, v.y - scr->box.bmin.y);
nuclear@6: }
nuclear@6: 
nuclear@6: /*
nuclear@6: static Vec2 scr_to_world(const ScreenImpl *scr, const Vec2 &v)
nuclear@6: {
nuclear@6: 	return Vec2(v.x + scr->box.bmin.x, v.y + scr->box.bmin.y);
nuclear@6: }
nuclear@6: */
nuclear@6: 
nuclear@6: 
nuclear@6: } // namespace goatkit