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65 lines
1.6 KiB
C
65 lines
1.6 KiB
C
2 years ago
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#include "../lv_examples.h"
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#if LV_BUILD_EXAMPLES && LV_USE_IMG
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static lv_style_t style_btn;
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/*Will be called when the styles of the base theme are already added
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to add new styles*/
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static void new_theme_apply_cb(lv_theme_t * th, lv_obj_t * obj)
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{
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LV_UNUSED(th);
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if(lv_obj_check_type(obj, &lv_btn_class)) {
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lv_obj_add_style(obj, &style_btn, 0);
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}
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}
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static void new_theme_init_and_set(void)
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{
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/*Initialize the styles*/
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lv_style_init(&style_btn);
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lv_style_set_bg_color(&style_btn, lv_palette_main(LV_PALETTE_GREEN));
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lv_style_set_border_color(&style_btn, lv_palette_darken(LV_PALETTE_GREEN, 3));
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lv_style_set_border_width(&style_btn, 3);
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/*Initialize the new theme from the current theme*/
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lv_theme_t * th_act = lv_disp_get_theme(NULL);
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static lv_theme_t th_new;
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th_new = *th_act;
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/*Set the parent theme and the style apply callback for the new theme*/
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lv_theme_set_parent(&th_new, th_act);
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lv_theme_set_apply_cb(&th_new, new_theme_apply_cb);
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/*Assign the new theme to the current display*/
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lv_disp_set_theme(NULL, &th_new);
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}
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/**
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* Extending the current theme
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*/
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void lv_example_style_14(void)
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{
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lv_obj_t * btn;
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lv_obj_t * label;
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btn = lv_btn_create(lv_scr_act());
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lv_obj_align(btn, LV_ALIGN_TOP_MID, 0, 20);
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label = lv_label_create(btn);
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lv_label_set_text(label, "Original theme");
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new_theme_init_and_set();
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btn = lv_btn_create(lv_scr_act());
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lv_obj_align(btn, LV_ALIGN_BOTTOM_MID, 0, -20);
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label = lv_label_create(btn);
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lv_label_set_text(label, "New theme");
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}
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#endif
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