/* source/widgets/sgl_label.h
 *
 * MIT License
 *
 * Copyright(c) 2023-present All contributors of SGL
 * Document reference link: https://sgl-docs.readthedocs.io
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */

#ifndef __SGL_LABEL_H__
#define __SGL_LABEL_H__

#include <sgl_core.h>
#include <sgl_draw.h>
#include <sgl_math.h>
#include <sgl_log.h>
#include <sgl_mm.h>
#include <sgl_cfgfix.h>
#include <string.h>

/**
 * @brief sgl label object
 * @obj: sgl general object
 * @desc: draw task descriptor
 */
typedef struct sgl_label
{
    sgl_obj_t obj;
    const char *text;
    char *text_buf; /* 动态文本缓冲，由 label 持有，销毁时自动释放 */
    const sgl_font_t *font;
    sgl_color_t color;
    sgl_color_t bg_color;
    uint8_t alpha;
    uint8_t align : 6;
    uint8_t bg_flag : 1;
    uint8_t rota : 1;
    union
    {
        struct
        {
            int8_t offset_x;
            int8_t offset_y;
        } offset;
        int16_t rotation;
    } transform;
} sgl_label_t;

/**
 * @brief create a label object
 * @param parent parent of the label
 * @return pointer to the label object
 */
sgl_obj_t *sgl_label_create(sgl_obj_t *parent);

/**
 * @brief set label text
 * @param obj pointer to the label object
 * @param text text to be set
 * @return none
 */
static inline void sgl_label_set_text(sgl_obj_t *obj, const char *text)
{
    sgl_label_t *label = sgl_container_of(obj, sgl_label_t, obj);
    label->text = text;
    sgl_obj_set_dirty(obj);
}

/**
 * @brief 设置动态文本：将 text 复制到 label 自有堆内存，label 销毁时自动释放
 * @note  使用前请先 sprintf 到临时 buf，再调用此函数传入 buf
 */
static inline void sgl_label_set_text_dyn(sgl_obj_t *obj, const char *text)
{
    sgl_label_t *label = sgl_container_of(obj, sgl_label_t, obj);
    size_t len = strlen(text) + 1;
    if (label->text_buf != NULL)
    {
        sgl_free(label->text_buf);
    }
    label->text_buf = (char *)sgl_malloc(len);
    if (label->text_buf != NULL)
    {
        memcpy(label->text_buf, text, len);
        label->text = label->text_buf;
    }
    sgl_obj_set_dirty(obj);
}

/**
 * @brief set label font
 * @param obj pointer to the label object
 * @param font pointer to the font
 * @return none
 */
static inline void sgl_label_set_font(sgl_obj_t *obj, const sgl_font_t *font)
{
    sgl_label_t *label = sgl_container_of(obj, sgl_label_t, obj);
    label->font = font;
    sgl_obj_set_dirty(obj);
}

/**
 * @brief set label text color
 * @param obj pointer to the label object
 * @param color color to be set
 * @return none
 */
static inline void sgl_label_set_text_color(sgl_obj_t *obj, sgl_color_t color)
{
    sgl_label_t *label = sgl_container_of(obj, sgl_label_t, obj);
    label->color = color;
    sgl_obj_set_dirty(obj);
}

/**
 * @brief set label background color
 * @param obj pointer to the label object
 * @param color color to be set
 * @return none
 */
static inline void sgl_label_set_bg_color(sgl_obj_t *obj, sgl_color_t color)
{
    sgl_label_t *label = sgl_container_of(obj, sgl_label_t, obj);
    label->bg_color = color;
    label->bg_flag = 1;
    sgl_obj_set_dirty(obj);
}

/**
 * @brief set label radius
 * @param obj pointer to the label object
 * @param radius radius to be set
 * @return none
 */
static inline void sgl_label_set_radius(sgl_obj_t *obj, uint8_t radius)
{
    sgl_obj_set_radius(obj, radius);
    sgl_obj_set_dirty(obj);
}

/**
 * @brief set label text align
 * @param obj pointer to the label object
 * @param align align to be set
 * @return none
 */
static inline void sgl_label_set_text_align(sgl_obj_t *obj, sgl_align_type_t align)
{
    sgl_label_t *label = sgl_container_of(obj, sgl_label_t, obj);
    label->align = align;
    sgl_obj_set_dirty(obj);
}

/**
 * @brief set label alpha
 * @param obj pointer to the label object
 * @param alpha alpha to be set
 * @return none
 */
static inline void sgl_label_set_alpha(sgl_obj_t *obj, uint8_t alpha)
{
    sgl_label_t *label = sgl_container_of(obj, sgl_label_t, obj);
    label->alpha = alpha;
    sgl_obj_set_dirty(obj);
}

/**
 * @brief set label text offset
 * @param obj pointer to the label object
 * @param offset_x offset_x to be set
 * @param offset_y offset_y to be set
 * @return none
 */
static inline void sgl_label_set_text_offset(sgl_obj_t *obj, int8_t offset_x, int8_t offset_y)
{
    sgl_label_t *label = sgl_container_of(obj, sgl_label_t, obj);
    label->transform.offset.offset_x = offset_x;
    label->transform.offset.offset_y = offset_y;
    sgl_obj_set_dirty(obj);
}

/**
 * @brief set label text rotation
 * @param obj pointer to the label object
 * @param text_rotation text rotation angle (0-360 degree)
 * @return none
 */
static inline void sgl_label_set_text_rotation(sgl_obj_t *obj, int16_t text_rotation)
{
    sgl_label_t *label = sgl_container_of(obj, sgl_label_t, obj);
    label->transform.rotation = text_rotation % 360;
    if (label->transform.rotation < 0)
        label->transform.rotation += 360;
    label->rota = label->transform.rotation ? 1 : 0;
    sgl_obj_set_dirty(obj);
}

#endif // !__SGL_LABEL_H__