Mercurial > molko
view src/core/button.c @ 115:3bd0d3a39e30
core: implement checkbox, closes #2486
author | David Demelier <markand@malikania.fr> |
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date | Sun, 12 Jul 2020 09:44:27 +0200 |
parents | ed1a6bb02a78 |
children |
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/* * button.c -- GUI button * * Copyright (c) 2020 David Demelier <markand@malikania.fr> * * Permission to use, copy, modify, and/or distribute this software for any * purpose with or without fee is hereby granted, provided that the above * copyright notice and this permission notice appear in all copies. * * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ #include <assert.h> #include "button.h" #include "event.h" #include "maths.h" #include "theme.h" static bool is_boxed(const struct button *button, const struct event_click *click) { assert(button); assert(click); assert(click->type == EVENT_CLICKDOWN || click->type == EVENT_CLICKUP); return maths_is_boxed(button->x, button->y, button->w, button->h, click->x, click->y); } void button_handle(struct button *button, const union event *ev) { assert(button); assert(ev); switch (ev->type) { case EVENT_CLICKDOWN: if (is_boxed(button, &ev->click)) button->state = BUTTON_STATE_PRESSED; break; case EVENT_CLICKUP: /* * If the button was pressed, indicate that the button is * finally activated. This let the user to move the cursor * outside the button to "forget" the press. */ if (!is_boxed(button, &ev->click)) button->state = BUTTON_STATE_NONE; else if (button->state == BUTTON_STATE_PRESSED) button->state = BUTTON_STATE_ACTIVATED; break; default: break; } } void button_reset(struct button *button) { assert(button); button->state = BUTTON_STATE_NONE; } void button_draw(struct button *button) { assert(button); theme_draw_button(button->theme, button); }