acid-drop

- Hacking the planet from a LilyGo T-Deck using custom firmware
git clone git://git.acid.vegas/acid-drop.git
lv_example_get_started_2.c (3009B)
      1 #include "../lv_examples.h"
      2 #if LV_USE_BTN && LV_BUILD_EXAMPLES
      3 
      4 static lv_style_t style_btn;
      5 static lv_style_t style_btn_pressed;
      6 static lv_style_t style_btn_red;
      7 
      8 static lv_color_t darken(const lv_color_filter_dsc_t * dsc, lv_color_t color, lv_opa_t opa)
      9 {
     10     LV_UNUSED(dsc);
     11     return lv_color_darken(color, opa);
     12 }
     13 
     14 static void style_init(void)
     15 {
     16     /*Create a simple button style*/
     17     lv_style_init(&style_btn);
     18     lv_style_set_radius(&style_btn, 10);
     19     lv_style_set_bg_opa(&style_btn, LV_OPA_COVER);
     20     lv_style_set_bg_color(&style_btn, lv_palette_lighten(LV_PALETTE_GREY, 3));
     21     lv_style_set_bg_grad_color(&style_btn, lv_palette_main(LV_PALETTE_GREY));
     22     lv_style_set_bg_grad_dir(&style_btn, LV_GRAD_DIR_VER);
     23 
     24     lv_style_set_border_color(&style_btn, lv_color_black());
     25     lv_style_set_border_opa(&style_btn, LV_OPA_20);
     26     lv_style_set_border_width(&style_btn, 2);
     27 
     28     lv_style_set_text_color(&style_btn, lv_color_black());
     29 
     30     /*Create a style for the pressed state.
     31      *Use a color filter to simply modify all colors in this state*/
     32     static lv_color_filter_dsc_t color_filter;
     33     lv_color_filter_dsc_init(&color_filter, darken);
     34     lv_style_init(&style_btn_pressed);
     35     lv_style_set_color_filter_dsc(&style_btn_pressed, &color_filter);
     36     lv_style_set_color_filter_opa(&style_btn_pressed, LV_OPA_20);
     37 
     38     /*Create a red style. Change only some colors.*/
     39     lv_style_init(&style_btn_red);
     40     lv_style_set_bg_color(&style_btn_red, lv_palette_main(LV_PALETTE_RED));
     41     lv_style_set_bg_grad_color(&style_btn_red, lv_palette_lighten(LV_PALETTE_RED, 3));
     42 }
     43 
     44 /**
     45  * Create styles from scratch for buttons.
     46  */
     47 void lv_example_get_started_2(void)
     48 {
     49     /*Initialize the style*/
     50     style_init();
     51 
     52     /*Create a button and use the new styles*/
     53     lv_obj_t * btn = lv_btn_create(lv_scr_act());
     54     /* Remove the styles coming from the theme
     55      * Note that size and position are also stored as style properties
     56      * so lv_obj_remove_style_all will remove the set size and position too */
     57     lv_obj_remove_style_all(btn);
     58     lv_obj_set_pos(btn, 10, 10);
     59     lv_obj_set_size(btn, 120, 50);
     60     lv_obj_add_style(btn, &style_btn, 0);
     61     lv_obj_add_style(btn, &style_btn_pressed, LV_STATE_PRESSED);
     62 
     63     /*Add a label to the button*/
     64     lv_obj_t * label = lv_label_create(btn);
     65     lv_label_set_text(label, "Button");
     66     lv_obj_center(label);
     67 
     68     /*Create another button and use the red style too*/
     69     lv_obj_t * btn2 = lv_btn_create(lv_scr_act());
     70     lv_obj_remove_style_all(btn2);                      /*Remove the styles coming from the theme*/
     71     lv_obj_set_pos(btn2, 10, 80);
     72     lv_obj_set_size(btn2, 120, 50);
     73     lv_obj_add_style(btn2, &style_btn, 0);
     74     lv_obj_add_style(btn2, &style_btn_red, 0);
     75     lv_obj_add_style(btn2, &style_btn_pressed, LV_STATE_PRESSED);
     76     lv_obj_set_style_radius(btn2, LV_RADIUS_CIRCLE, 0); /*Add a local style too*/
     77 
     78     label = lv_label_create(btn2);
     79     lv_label_set_text(label, "Button 2");
     80     lv_obj_center(label);
     81 }
     82 
     83 #endif