133 lines
3.5 KiB
C
133 lines
3.5 KiB
C
/* source/widgets/sgl_line.c
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*
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* MIT License
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*
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* Copyright(c) 2023-present All contributors of SGL
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* Document reference link: https://sgl-docs.readthedocs.io
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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* The above copyright notice and this permission notice shall be included in all
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* copies or substantial portions of the Software.
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#include <sgl_core.h>
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#include <sgl_draw.h>
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#include <sgl_math.h>
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#include <sgl_log.h>
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#include <sgl_mm.h>
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#include <sgl_theme.h>
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#include <sgl_cfgfix.h>
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#include <string.h>
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#include "sgl_line.h"
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static void sgl_line_construct_cb(sgl_surf_t *surf, sgl_obj_t* obj, sgl_event_t *evt)
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{
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sgl_line_t *line = sgl_container_of(obj, sgl_line_t, obj);
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sgl_draw_line_t desc;
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desc.x1 = obj->coords.x1;
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desc.y1 = obj->coords.y1;
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desc.x2 = obj->coords.x2;
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desc.y2 = obj->coords.y2;
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desc.color = line->color;
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desc.alpha = line->alpha;
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desc.width = obj->border;
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if(evt->type == SGL_EVENT_DRAW_MAIN) {
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if (line->x_swap) {
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sgl_swap(&desc.x1, &desc.x2);
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}
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if (line->y_swap) {
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sgl_swap(&desc.y1, &desc.y2);
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}
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sgl_draw_line(surf, &obj->parent->area, &desc);
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}
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}
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/**
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* @brief create a line object
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* @param parent parent of the line
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* @return line object
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*/
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sgl_obj_t* sgl_line_create(sgl_obj_t* parent)
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{
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sgl_line_t *line = sgl_malloc(sizeof(sgl_line_t));
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if(line == NULL) {
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SGL_LOG_ERROR("sgl_line_create: malloc failed");
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return NULL;
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}
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/* set object all member to zero */
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memset(line, 0, sizeof(sgl_line_t));
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sgl_obj_t *obj = &line->obj;
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sgl_obj_init(&line->obj, parent);
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obj->construct_fn = sgl_line_construct_cb;
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line->color = SGL_THEME_BG_COLOR;
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line->alpha = SGL_ALPHA_MAX;
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obj->border = 1;
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return obj;
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}
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/**
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* @brief set line start position
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* @param obj line object
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* @param x start x position
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* @param y start y position
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* @return none
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*/
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void sgl_line_set_pos(sgl_obj_t *obj, int16_t x1, int16_t y1, int16_t x2, int16_t y2)
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{
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SGL_ASSERT(obj != NULL);
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int16_t _x1, _y1, _x2, _y2;
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sgl_line_t *line = sgl_container_of(obj, sgl_line_t, obj);
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_x1 = obj->parent->coords.x1 + x1;
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_x2 = obj->parent->coords.x1 + x2;
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_y1 = obj->parent->coords.y1 + y1;
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_y2 = obj->parent->coords.y1 + y2;
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if (_x1 > _x2) {
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sgl_swap(&_x1, &_x2);
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line->x_swap = 1;
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}
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else {
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line->x_swap = 0;
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}
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if (_y1 > _y2) {
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sgl_swap(&_y1, &_y2);
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line->y_swap = 1;
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}
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else {
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line->y_swap = 0;
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}
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/* default thinckness is 1 */
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obj->coords.x1 = _x1;
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obj->coords.y1 = _y1;
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obj->coords.x2 = _x2;
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obj->coords.y2 = _y2;
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obj->border = 2;
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sgl_obj_set_dirty(obj);
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}
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