source: mainline/uspace/lib/ui/src/pbutton.c@ 47728678

/*
 * Copyright (c) 2020 Jiri Svoboda
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * - Redistributions of source code must retain the above copyright
 *   notice, this list of conditions and the following disclaimer.
 * - Redistributions in binary form must reproduce the above copyright
 *   notice, this list of conditions and the following disclaimer in the
 *   documentation and/or other materials provided with the distribution.
 * - The name of the author may not be used to endorse or promote products
 *   derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

/** @addtogroup libui
 * @{
 */
/**
 * @file Push button
 */

#include <errno.h>
#include <gfx/color.h>
#include <gfx/context.h>
#include <gfx/render.h>
#include <gfx/text.h>
#include <stdlib.h>
#include <str.h>
#include <ui/pbutton.h>
#include "../private/pbutton.h"
#include "../private/resource.h"

/** Create new push button.
 *
 * @param resource UI resource
 * @param caption Caption
 * @param rpbutton Place to store pointer to new push button
 * @return EOK on success, ENOMEM if out of memory
 */
errno_t ui_pbutton_create(ui_resource_t *resource, const char *caption,
    ui_pbutton_t **rpbutton)
{
        ui_pbutton_t *pbutton;

        pbutton = calloc(1, sizeof(ui_pbutton_t));
        if (pbutton == NULL)
                return ENOMEM;

        pbutton->caption = str_dup(caption);
        if (pbutton->caption == NULL) {
                free(pbutton);
                return ENOMEM;
        }

        pbutton->res = resource;
        *rpbutton = pbutton;
        return EOK;
}

/** Destroy push button.
 *
 * @param pbutton Push button or @c NULL
 */
void ui_pbutton_destroy(ui_pbutton_t *pbutton)
{
        if (pbutton == NULL)
                return;

        free(pbutton);
}

/** Set button rectangle.
 *
 * @param pbutton Button
 * @param rect New button rectanle
 */
void ui_pbutton_set_rect(ui_pbutton_t *pbutton, gfx_rect_t *rect)
{
        pbutton->rect = *rect;
}

/** Paint push button.
 *
 * @param pbutton Push button
 * @return EOK on success or an error code
 */
errno_t ui_pbutton_paint(ui_pbutton_t *pbutton)
{
        gfx_color_t *color = NULL;
        gfx_coord2_t pos;
        gfx_text_fmt_t fmt;
        errno_t rc;

        rc = gfx_color_new_rgb_i16(0xc8c8, 0xc8c8, 0xc8c8, &color);
        if (rc != EOK)
                goto error;

        rc = gfx_set_color(pbutton->res->gc, color);
        if (rc != EOK)
                goto error;

        rc = gfx_fill_rect(pbutton->res->gc, &pbutton->rect);
        if (rc != EOK)
                goto error;

        gfx_color_delete(color);

        rc = gfx_color_new_rgb_i16(0, 0, 0, &color);
        if (rc != EOK)
                goto error;

        rc = gfx_set_color(pbutton->res->gc, color);
        if (rc != EOK)
                goto error;

        /* Center of button rectangle */
        pos.x = (pbutton->rect.p0.x + pbutton->rect.p1.x) / 2;
        pos.y = (pbutton->rect.p0.y + pbutton->rect.p1.y) / 2;

        gfx_text_fmt_init(&fmt);
        fmt.halign = gfx_halign_center;
        fmt.valign = gfx_valign_center;

        rc = gfx_puttext(pbutton->res->font, &pos, &fmt, pbutton->caption);
        if (rc != EOK)
                goto error;

        gfx_color_delete(color);

        return EOK;
error:
        if (color != NULL)
                gfx_color_delete(color);
        return rc;
}

/** @}
 */