acid-drop

- Hacking the planet from a LilyGo T-Deck using custom firmware
git clone git://git.acid.vegas/acid-drop.git
lv_example_btnmatrix_2.c (2670B)
      1 #include "../../lv_examples.h"
      2 #if LV_USE_BTNMATRIX && LV_BUILD_EXAMPLES
      3 
      4 
      5 static void event_cb(lv_event_t * e)
      6 {
      7     lv_event_code_t code = lv_event_get_code(e);
      8     lv_obj_t * obj = lv_event_get_target(e);
      9     if(code == LV_EVENT_DRAW_PART_BEGIN) {
     10         lv_obj_draw_part_dsc_t * dsc = lv_event_get_param(e);
     11 
     12         /*Change the draw descriptor the 2nd button*/
     13         if(dsc->id == 1) {
     14             dsc->rect_dsc->radius = 0;
     15             if(lv_btnmatrix_get_selected_btn(obj) == dsc->id)  dsc->rect_dsc->bg_color = lv_palette_darken(LV_PALETTE_BLUE, 3);
     16             else dsc->rect_dsc->bg_color = lv_palette_main(LV_PALETTE_BLUE);
     17 
     18             dsc->rect_dsc->shadow_width = 6;
     19             dsc->rect_dsc->shadow_ofs_x = 3;
     20             dsc->rect_dsc->shadow_ofs_y = 3;
     21             dsc->label_dsc->color = lv_color_white();
     22         }
     23         /*Change the draw descriptor the 3rd button*/
     24         else if(dsc->id == 2) {
     25             dsc->rect_dsc->radius = LV_RADIUS_CIRCLE;
     26             if(lv_btnmatrix_get_selected_btn(obj) == dsc->id)  dsc->rect_dsc->bg_color = lv_palette_darken(LV_PALETTE_RED, 3);
     27             else dsc->rect_dsc->bg_color = lv_palette_main(LV_PALETTE_RED);
     28 
     29             dsc->label_dsc->color = lv_color_white();
     30         }
     31         else if(dsc->id == 3) {
     32             dsc->label_dsc->opa = LV_OPA_TRANSP; /*Hide the text if any*/
     33 
     34         }
     35     }
     36     if(code == LV_EVENT_DRAW_PART_END) {
     37         lv_obj_draw_part_dsc_t * dsc = lv_event_get_param(e);
     38 
     39         /*Add custom content to the 4th button when the button itself was drawn*/
     40         if(dsc->id == 3) {
     41             LV_IMG_DECLARE(img_star);
     42             lv_img_header_t header;
     43             lv_res_t res = lv_img_decoder_get_info(&img_star, &header);
     44             if(res != LV_RES_OK) return;
     45 
     46             lv_area_t a;
     47             a.x1 = dsc->draw_area->x1 + (lv_area_get_width(dsc->draw_area) - header.w) / 2;
     48             a.x2 = a.x1 + header.w - 1;
     49             a.y1 = dsc->draw_area->y1 + (lv_area_get_height(dsc->draw_area) - header.h) / 2;
     50             a.y2 = a.y1 + header.h - 1;
     51 
     52             lv_draw_img_dsc_t img_draw_dsc;
     53             lv_draw_img_dsc_init(&img_draw_dsc);
     54             img_draw_dsc.recolor = lv_color_black();
     55             if(lv_btnmatrix_get_selected_btn(obj) == dsc->id)  img_draw_dsc.recolor_opa = LV_OPA_30;
     56 
     57             lv_draw_img(dsc->draw_ctx, &img_draw_dsc, &a, &img_star);
     58         }
     59     }
     60 }
     61 
     62 /**
     63  * Add custom drawer to the button matrix to customize buttons one by one
     64  */
     65 void lv_example_btnmatrix_2(void)
     66 {
     67     lv_obj_t * btnm = lv_btnmatrix_create(lv_scr_act());
     68     lv_obj_add_event_cb(btnm, event_cb, LV_EVENT_ALL, NULL);
     69     lv_obj_center(btnm);
     70 }
     71 
     72 #endif