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 <string.h>
nuclear@6: #include <math.h>
nuclear@6: #include <string>
nuclear@6: #include <sstream>
nuclear@6: #include "widget.h"
nuclear@6: #include "boolanm.h"
nuclear@6: #include "theme.h"
nuclear@6: #include "screen.h"
nuclear@6: 
nuclear@6: namespace goatkit {
nuclear@6: 
nuclear@6: struct WidgetImpl {
nuclear@6: 	Screen *scr;
nuclear@6: 	std::string name, text;
nuclear@6: 	BBox box;
nuclear@6: 
nuclear@6: 	BoolAnim visible, active, press, hover, focus;
nuclear@6: 
nuclear@6: 	struct {
nuclear@6: 		EventCallback func;
nuclear@6: 		void *cls;
nuclear@6: 	} cb[NUM_EVENTS];
nuclear@6: };
nuclear@6: 
nuclear@6: 
nuclear@6: Widget::Widget()
nuclear@6: {
nuclear@6: 	static int widget_count;
nuclear@6: 
nuclear@6: 	widget = new WidgetImpl;
nuclear@6: 	widget->scr = 0;
nuclear@6: 
nuclear@6: 	std::stringstream sstr;
nuclear@6: 	sstr << get_type_name() << widget_count++;
nuclear@6: 	widget->name = sstr.str();
nuclear@6: 
nuclear@6: 	widget->box.bmin = Vec2(0, 0);
nuclear@6: 	widget->box.bmax = Vec2(1, 1);
nuclear@6: 
nuclear@6: 	widget->visible.set(true);
nuclear@6: 	widget->active.set(true);
nuclear@6: 
nuclear@6: 	widget->hover.set_transition_duration(250);
nuclear@6: 	widget->press.set_transition_duration(50);
nuclear@6: 
nuclear@6: 	memset(widget->cb, 0, sizeof widget->cb);
nuclear@6: }
nuclear@6: 
nuclear@6: Widget::~Widget()
nuclear@6: {
nuclear@6: 	delete widget;
nuclear@6: }
nuclear@6: 
nuclear@6: void Widget::set_screen(Screen *scr)
nuclear@6: {
nuclear@6: 	widget->scr = scr;
nuclear@6: }
nuclear@6: 
nuclear@6: Screen *Widget::get_screen() const
nuclear@6: {
nuclear@6: 	return widget->scr;
nuclear@6: }
nuclear@6: 
nuclear@6: const char *Widget::get_type_name() const
nuclear@6: {
nuclear@6: 	return "widget";
nuclear@6: }
nuclear@6: 
nuclear@6: void Widget::set_name(const char *name)
nuclear@6: {
nuclear@6: 	widget->name = std::string(name);
nuclear@6: }
nuclear@6: 
nuclear@6: const char *Widget::get_name() const
nuclear@6: {
nuclear@6: 	return widget->name.c_str();
nuclear@6: }
nuclear@6: 
nuclear@6: void Widget::set_text(const char *text)
nuclear@6: {
nuclear@6: 	widget->text = std::string(text);
nuclear@6: }
nuclear@6: 
nuclear@6: const char *Widget::get_text() const
nuclear@6: {
nuclear@6: 	return widget->text.c_str();
nuclear@6: }
nuclear@6: 
nuclear@6: void Widget::show()
nuclear@6: {
nuclear@6: 	widget->visible.change(true);
nuclear@6: }
nuclear@6: 
nuclear@6: void Widget::hide()
nuclear@6: {
nuclear@6: 	widget->visible.change(false);
nuclear@6: }
nuclear@6: 
nuclear@6: float Widget::get_visibility() const
nuclear@6: {
nuclear@6: 	return widget->visible.get_value();
nuclear@6: }
nuclear@6: 
nuclear@6: bool Widget::is_visible() const
nuclear@6: {
nuclear@6: 	return widget->visible.get_state();
nuclear@6: }
nuclear@6: 
nuclear@14: void Widget::set_visibility_transition(long msec)
nuclear@14: {
nuclear@14: 	widget->visible.set_transition_duration(msec);
nuclear@14: }
nuclear@14: 
nuclear@14: long Widget::get_visibility_transition() const
nuclear@14: {
nuclear@14: 	return widget->visible.get_transition_duration();
nuclear@14: }
nuclear@14: 
nuclear@6: void Widget::activate()
nuclear@6: {
nuclear@6: 	widget->active.change(true);
nuclear@6: }
nuclear@6: 
nuclear@6: void Widget::deactivate()
nuclear@6: {
nuclear@6: 	widget->active.change(false);
nuclear@6: }
nuclear@6: 
nuclear@6: float Widget::get_active() const
nuclear@6: {
nuclear@6: 	return widget->active.get_value();
nuclear@6: }
nuclear@6: 
nuclear@6: bool Widget::is_active() const
nuclear@6: {
nuclear@6: 	return widget->active.get_state();
nuclear@6: }
nuclear@6: 
nuclear@14: void Widget::set_active_transition(long msec)
nuclear@14: {
nuclear@14: 	widget->active.set_transition_duration(msec);
nuclear@14: }
nuclear@14: 
nuclear@14: long Widget::get_active_transition() const
nuclear@14: {
nuclear@15: 	return widget->active.get_transition_duration();
nuclear@14: }
nuclear@14: 
nuclear@6: void Widget::press()
nuclear@6: {
nuclear@6: 	widget->press.change(true);
nuclear@6: }
nuclear@6: 
nuclear@6: void Widget::release()
nuclear@6: {
nuclear@6: 	widget->press.change(false);
nuclear@6: }
nuclear@6: 
nuclear@6: float Widget::get_pressed() const
nuclear@6: {
nuclear@6: 	return widget->press.get_value();
nuclear@6: }
nuclear@6: 
nuclear@6: bool Widget::is_pressed() const
nuclear@6: {
nuclear@6: 	return widget->press.get_state();
nuclear@6: }
nuclear@6: 
nuclear@14: void Widget::set_press_transition(long msec)
nuclear@14: {
nuclear@14: 	widget->press.set_transition_duration(msec);
nuclear@14: }
nuclear@14: 
nuclear@14: long Widget::get_press_transition() const
nuclear@14: {
nuclear@14: 	return widget->press.get_transition_duration();
nuclear@14: }
nuclear@14: 
nuclear@6: void Widget::mousein()
nuclear@6: {
nuclear@6: 	widget->hover.change(true);
nuclear@6: }
nuclear@6: 
nuclear@6: void Widget::mouseout()
nuclear@6: {
nuclear@6: 	widget->hover.change(false);
nuclear@6: 	if(widget->press) {
nuclear@6: 		widget->press.change(false);
nuclear@6: 	}
nuclear@6: }
nuclear@6: 
nuclear@6: float Widget::get_under_mouse() const
nuclear@6: {
nuclear@6: 	return widget->hover.get_value();
nuclear@6: }
nuclear@6: 
nuclear@6: bool Widget::is_under_mouse() const
nuclear@6: {
nuclear@6: 	return widget->hover.get_state();
nuclear@6: }
nuclear@6: 
nuclear@14: void Widget::set_hover_transition(long msec)
nuclear@14: {
nuclear@14: 	widget->hover.set_transition_duration(msec);
nuclear@14: }
nuclear@14: 
nuclear@14: long Widget::get_hover_transition() const
nuclear@14: {
nuclear@14: 	return widget->hover.get_transition_duration();
nuclear@14: }
nuclear@14: 
nuclear@6: bool Widget::can_focus() const
nuclear@6: {
nuclear@6: 	return false;
nuclear@6: }
nuclear@6: 
nuclear@6: void Widget::focusin()
nuclear@6: {
nuclear@6: 	widget->focus.change(true);
nuclear@6: }
nuclear@6: 
nuclear@6: void Widget::focusout()
nuclear@6: {
nuclear@6: 	widget->focus.change(false);
nuclear@6: }
nuclear@6: 
nuclear@6: float Widget::get_focus() const
nuclear@6: {
nuclear@6: 	return widget->focus.get_value();
nuclear@6: }
nuclear@6: 
nuclear@6: bool Widget::is_focused() const
nuclear@6: {
nuclear@6: 	return widget->focus.get_state();
nuclear@6: }
nuclear@6: 
nuclear@14: void Widget::set_focus_transition(long msec)
nuclear@14: {
nuclear@14: 	widget->focus.set_transition_duration(msec);
nuclear@14: }
nuclear@14: 
nuclear@14: long Widget::get_focus_transition() const
nuclear@14: {
nuclear@14: 	return widget->focus.get_transition_duration();
nuclear@14: }
nuclear@14: 
nuclear@6: void Widget::set_position(float x, float y)
nuclear@6: {
nuclear@6: 	set_position(Vec2(x, y));
nuclear@6: }
nuclear@6: 
nuclear@6: void Widget::set_position(const Vec2 &pos)
nuclear@6: {
nuclear@6: 	Vec2 sz = get_size();
nuclear@6: 
nuclear@6: 	widget->box.bmin = pos;
nuclear@6: 	widget->box.bmax.x = pos.x + sz.x;
nuclear@6: 	widget->box.bmax.y = pos.y + sz.y;
nuclear@6: }
nuclear@6: 
nuclear@6: const Vec2 &Widget::get_position() const
nuclear@6: {
nuclear@6: 	return widget->box.bmin;
nuclear@6: }
nuclear@6: 
nuclear@6: void Widget::set_size(float x, float y)
nuclear@6: {
nuclear@6: 	set_size(Vec2(x, y));
nuclear@6: }
nuclear@6: 
nuclear@6: void Widget::set_size(const Vec2 &sz)
nuclear@6: {
nuclear@6: 	widget->box.bmax.x = widget->box.bmin.x + sz.x;
nuclear@6: 	widget->box.bmax.y = widget->box.bmin.y + sz.y;
nuclear@6: }
nuclear@6: 
nuclear@6: const Vec2 Widget::get_size() const
nuclear@6: {
nuclear@6: 	return Vec2(widget->box.bmax.x - widget->box.bmin.x,
nuclear@6: 			widget->box.bmax.y - widget->box.bmin.y);
nuclear@6: }
nuclear@6: 
nuclear@6: 
nuclear@6: const BBox &Widget::get_box() const
nuclear@6: {
nuclear@6: 	return widget->box;
nuclear@6: }
nuclear@6: 
nuclear@6: bool Widget::hit_test(const Vec2 &pt) const
nuclear@6: {
nuclear@6: 	return pt.x >= widget->box.bmin.x && pt.x < widget->box.bmax.x &&
nuclear@6: 		pt.y >= widget->box.bmin.y && pt.y < widget->box.bmax.y;
nuclear@6: }
nuclear@6: 
nuclear@6: void Widget::draw() const
nuclear@6: {
nuclear@6: 	WidgetDrawFunc draw_func = default_draw_func;
nuclear@6: 
nuclear@6: 	if(theme) {
nuclear@6: 		draw_func = theme->get_draw_func(get_type_name());
nuclear@6: 	}
nuclear@6: 
nuclear@6: 	draw_func(this);
nuclear@6: }
nuclear@6: 
nuclear@6: // dummy event handlers
nuclear@6: void Widget::on_mouse_button(const ButtonEvent &ev)
nuclear@6: {
nuclear@6: }
nuclear@6: 
nuclear@6: void Widget::on_mouse_motion(const MotionEvent &ev)
nuclear@6: {
nuclear@6: }
nuclear@6: 
nuclear@6: void Widget::on_mouse_focus(const FocusEvent &ev)
nuclear@6: {
nuclear@6: }
nuclear@6: 
nuclear@6: void Widget::on_key(const KeyEvent &ev)
nuclear@6: {
nuclear@6: }
nuclear@6: 
nuclear@6: void Widget::on_click()
nuclear@6: {
nuclear@6: }
nuclear@6: 
nuclear@6: void Widget::on_double_click()
nuclear@6: {
nuclear@6: }
nuclear@6: 
nuclear@6: void Widget::on_change()
nuclear@6: {
nuclear@6: }
nuclear@6: 
nuclear@6: 
nuclear@6: #define CALL_CB(w, ev) \
nuclear@6: 	do { \
nuclear@6: 		if((w)->widget->cb[ev.type].func) { \
nuclear@6: 			(w)->widget->cb[ev.type].func((w), ev, (w)->widget->cb[ev.type].cls); \
nuclear@6: 		} \
nuclear@6: 	} while(0)
nuclear@6: 
nuclear@6: #define CALL_CB_TYPE(w, t) \
nuclear@6: 	do { \
nuclear@6: 		Event ev; \
nuclear@6: 		ev.type = (t); \
nuclear@6: 		CALL_CB(w, ev); \
nuclear@6: 	} while(0)
nuclear@6: 
nuclear@6: /* the event dispatcher generates high-level events (click, etc)
nuclear@6:  * and calls the on_whatever() functions for both low and high-level
nuclear@6:  * events.
nuclear@6:  * The on_whatever functions are called *after* any other actions performed
nuclear@6:  * here, to give subclasses the opportunity to override them easily, by
nuclear@6:  * overriding the on_ functions, without having to override handle_event itself
nuclear@6:  */
nuclear@6: // TODO also call callbacks here I guess...
nuclear@6: void Widget::handle_event(const Event &ev)
nuclear@6: {
nuclear@6: 	switch(ev.type) {
nuclear@6: 	case EV_MOUSE_BUTTON:
nuclear@6: 		if(ev.button.press) {
nuclear@6: 			press();
nuclear@6: 		} else {
nuclear@6: 			if(is_pressed()) {
nuclear@6: 				CALL_CB_TYPE(this, EV_CLICK);
nuclear@6: 				on_click();
nuclear@6: 			}
nuclear@6: 			release();
nuclear@6: 		}
nuclear@6: 
nuclear@6: 		on_mouse_button(ev.button);
nuclear@6: 		break;
nuclear@6: 
nuclear@6: 	case EV_MOUSE_MOTION:
nuclear@6: 		on_mouse_motion(ev.motion);
nuclear@6: 		break;
nuclear@6: 
nuclear@6: 	case EV_MOUSE_FOCUS:
nuclear@6: 		if(ev.focus.enter) {
nuclear@6: 			mousein();
nuclear@6: 		} else {
nuclear@6: 			mouseout();
nuclear@6: 		}
nuclear@6: 		on_mouse_focus(ev.focus);
nuclear@6: 		break;
nuclear@6: 
nuclear@6: 	case EV_KEY:
nuclear@6: 		on_key(ev.key);
nuclear@6: 		break;
nuclear@6: 
nuclear@6: 	case EV_CHANGE:
nuclear@6: 		on_change();
nuclear@6: 		break;
nuclear@6: 
nuclear@6: 	default:
nuclear@6: 		break;
nuclear@6: 	}
nuclear@6: 
nuclear@6: 	CALL_CB(this, ev);
nuclear@6: }
nuclear@6: 
nuclear@6: 
nuclear@6: void Widget::set_callback(EventType evtype, EventCallback func, void *cls)
nuclear@6: {
nuclear@6: 	widget->cb[evtype].func = func;
nuclear@6: 	widget->cb[evtype].cls = cls;
nuclear@6: }
nuclear@6: 
nuclear@6: 
nuclear@6: }	// namespace goatkit