122 lines
4.0 KiB
C
122 lines
4.0 KiB
C
/* source/widgets/sgl_button.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_cfgfix.h>
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#include <sgl_theme.h>
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#include <string.h>
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#include "sgl_button.h"
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/**
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* @brief button construct callback
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* @param surf: surface pointer
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* @param obj: object pointer
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* @param evt: event pointer
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* @return none
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* @note this function is called when the object is created or redraw
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*/
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static void sgl_button_construct_cb(sgl_surf_t *surf, sgl_obj_t* obj, sgl_event_t *evt)
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{
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sgl_button_t *button = sgl_container_of(obj, sgl_button_t, obj);
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sgl_pos_t align_pos;
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sgl_rect_t fill_area;
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sgl_draw_rect_t rect = {
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.alpha = button->alpha,
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.color = button->color,
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.border = obj->border,
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.border_color = button->border_color,
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.pixmap = button->pixmap,
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.radius = obj->radius,
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};
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if(evt->type == SGL_EVENT_DRAW_MAIN) {
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sgl_draw_rect(surf, &obj->area, &obj->coords, &rect);
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if(button->text) {
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SGL_ASSERT(button->font != NULL);
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fill_area = sgl_obj_get_fill_rect(obj);
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align_pos = sgl_get_text_pos(&fill_area, button->font, button->text, 0, (sgl_align_type_t)button->align);
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sgl_draw_string(surf, &obj->area, align_pos.x, align_pos.y, button->text, button->text_color, button->alpha, button->font);
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}
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}
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else if(evt->type == SGL_EVENT_PRESSED) {
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if(sgl_obj_is_flexible(obj)) {
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sgl_obj_size_zoom(obj, 2);
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}
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sgl_obj_set_dirty(obj);
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}
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else if(evt->type == SGL_EVENT_RELEASED) {
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if(sgl_obj_is_flexible(obj)) {
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sgl_obj_size_zoom(obj, -2);
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}
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sgl_obj_set_dirty(obj);
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}
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}
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/**
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* @brief create a button object
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* @param parent: parent object
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* @return object pointer
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* @note if parent is NULL, the button object will be created at the top level.
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*/
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sgl_obj_t* sgl_button_create(sgl_obj_t* parent)
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{
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sgl_button_t *button = sgl_malloc(sizeof(sgl_button_t));
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if(button == NULL) {
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SGL_LOG_ERROR("sgl_button_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(button, 0, sizeof(sgl_button_t));
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sgl_obj_t *obj = &button->obj;
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sgl_obj_init(&button->obj, parent);
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sgl_obj_set_clickable(obj);
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sgl_obj_set_flexible(obj);
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sgl_obj_set_border_width(obj, SGL_THEME_BORDER_WIDTH);
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sgl_obj_set_radius(obj, SGL_THEME_RADIUS);
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obj->construct_fn = sgl_button_construct_cb;
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button->alpha = SGL_THEME_ALPHA;
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button->color = SGL_THEME_COLOR;
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button->border_color = SGL_THEME_BORDER_COLOR;
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button->pixmap = NULL;
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button->text = " ";
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button->text_color = SGL_THEME_TEXT_COLOR;
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button->font = sgl_get_system_font();
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button->align = SGL_ALIGN_CENTER;
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return obj;
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}
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