84 lines
2.9 KiB
C
84 lines
2.9 KiB
C
#include "../lv_examples.h"
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#if LV_USE_BTN && LV_BUILD_EXAMPLES
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static lv_style_t style_btn;
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static lv_style_t style_btn_pressed;
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static lv_style_t style_btn_red;
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static lv_color_t darken(const lv_color_filter_dsc_t * dsc, lv_color_t color, lv_opa_t opa)
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{
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LV_UNUSED(dsc);
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return lv_color_darken(color, opa);
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}
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static void style_init(void)
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{
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/*Create a simple button style*/
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lv_style_init(&style_btn);
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lv_style_set_radius(&style_btn, 10);
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lv_style_set_bg_opa(&style_btn, LV_OPA_COVER);
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lv_style_set_bg_color(&style_btn, lv_palette_lighten(LV_PALETTE_GREY, 3));
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lv_style_set_bg_grad_color(&style_btn, lv_palette_main(LV_PALETTE_GREY));
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lv_style_set_bg_grad_dir(&style_btn, LV_GRAD_DIR_VER);
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lv_style_set_border_color(&style_btn, lv_color_black());
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lv_style_set_border_opa(&style_btn, LV_OPA_20);
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lv_style_set_border_width(&style_btn, 2);
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lv_style_set_text_color(&style_btn, lv_color_black());
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/*Create a style for the pressed state.
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*Use a color filter to simply modify all colors in this state*/
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static lv_color_filter_dsc_t color_filter;
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lv_color_filter_dsc_init(&color_filter, darken);
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lv_style_init(&style_btn_pressed);
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lv_style_set_color_filter_dsc(&style_btn_pressed, &color_filter);
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lv_style_set_color_filter_opa(&style_btn_pressed, LV_OPA_20);
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/*Create a red style. Change only some colors.*/
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lv_style_init(&style_btn_red);
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lv_style_set_bg_color(&style_btn_red, lv_palette_main(LV_PALETTE_RED));
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lv_style_set_bg_grad_color(&style_btn_red, lv_palette_lighten(LV_PALETTE_RED, 3));
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}
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/**
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* Create styles from scratch for buttons.
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*/
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void lv_example_get_started_2(void)
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{
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/*Initialize the style*/
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style_init();
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/*Create a button and use the new styles*/
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lv_obj_t * btn = lv_btn_create(lv_scr_act());
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/* Remove the styles coming from the theme
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* Note that size and position are also stored as style properties
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* so lv_obj_remove_style_all will remove the set size and position too */
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lv_obj_remove_style_all(btn);
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lv_obj_set_pos(btn, 10, 10);
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lv_obj_set_size(btn, 120, 50);
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lv_obj_add_style(btn, &style_btn, 0);
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lv_obj_add_style(btn, &style_btn_pressed, LV_STATE_PRESSED);
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/*Add a label to the button*/
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lv_obj_t * label = lv_label_create(btn);
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lv_label_set_text(label, "Button");
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lv_obj_center(label);
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/*Create another button and use the red style too*/
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lv_obj_t * btn2 = lv_btn_create(lv_scr_act());
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lv_obj_remove_style_all(btn2); /*Remove the styles coming from the theme*/
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lv_obj_set_pos(btn2, 10, 80);
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lv_obj_set_size(btn2, 120, 50);
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lv_obj_add_style(btn2, &style_btn, 0);
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lv_obj_add_style(btn2, &style_btn_red, 0);
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lv_obj_add_style(btn2, &style_btn_pressed, LV_STATE_PRESSED);
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lv_obj_set_style_radius(btn2, LV_RADIUS_CIRCLE, 0); /*Add a local style too*/
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label = lv_label_create(btn2);
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lv_label_set_text(label, "Button 2");
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lv_obj_center(label);
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}
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#endif
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