examples/widgets/scale/lv_example_scale_5.c


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#include "../../lv_examples.h"
#if LV_USE_SCALE && LV_BUILD_EXAMPLES

/**
 * An scale with section and custom styling
 */
void lv_example_scale_5(void)
{
    lv_obj_t * scale = lv_scale_create(lv_screen_active());
    lv_obj_set_size(scale, lv_display_get_horizontal_resolution(NULL) / 2, lv_display_get_vertical_resolution(NULL) / 2);
    lv_scale_set_label_show(scale, true);

    lv_scale_set_total_tick_count(scale, 10);
    lv_scale_set_major_tick_every(scale, 5);

    lv_obj_set_style_length(scale, 5, LV_PART_ITEMS);
    lv_obj_set_style_length(scale, 10, LV_PART_INDICATOR);
    lv_scale_set_range(scale, 25, 35);

    static const char * custom_labels[3] = {"One", "Two", NULL};
    lv_scale_set_text_src(scale, custom_labels);

    static lv_style_t indicator_style;
    lv_style_init(&indicator_style);
    /* Label style properties */
    lv_style_set_text_font(&indicator_style, LV_FONT_DEFAULT);
    lv_style_set_text_color(&indicator_style, lv_color_hex(0xff00ff));
    /* Major tick properties */
    lv_style_set_line_color(&indicator_style, lv_color_hex(0x00ff00));
    lv_style_set_width(&indicator_style, 10U); // Tick length
    lv_style_set_line_width(&indicator_style, 2U); // Tick width
    lv_obj_add_style(scale, &indicator_style, LV_PART_INDICATOR);

    static lv_style_t minor_ticks_style;
    lv_style_init(&minor_ticks_style);
    lv_style_set_line_color(&minor_ticks_style, lv_color_hex(0xff0000));
    lv_style_set_width(&minor_ticks_style, 5U); // Tick length
    lv_style_set_line_width(&minor_ticks_style, 2U); // Tick width
    lv_obj_add_style(scale, &minor_ticks_style, LV_PART_ITEMS);

    static lv_style_t main_line_style;
    lv_style_init(&main_line_style);
    /* Main line properties */
    lv_style_set_line_color(&main_line_style, lv_color_hex(0x0000ff));
    lv_style_set_line_width(&main_line_style, 2U); // Tick width
    lv_obj_add_style(scale, &main_line_style, LV_PART_MAIN);

    lv_obj_center(scale);

    /* Add a section */
    static lv_style_t section_minor_tick_style;
    static lv_style_t section_label_style;

    lv_style_init(&section_label_style);
    lv_style_init(&section_minor_tick_style);

    /* Label style properties */
    lv_style_set_text_font(&section_label_style, LV_FONT_DEFAULT);
    lv_style_set_text_color(&section_label_style, lv_color_hex(0xff0000));
    lv_style_set_text_letter_space(&section_label_style, 10);
    lv_style_set_text_opa(&section_label_style, LV_OPA_50);

    lv_style_set_line_color(&section_label_style, lv_color_hex(0xff0000));
    // lv_style_set_width(&section_label_style, 20U); // Tick length
    lv_style_set_line_width(&section_label_style, 5U); // Tick width

    lv_style_set_line_color(&section_minor_tick_style, lv_color_hex(0x0000ff));
    // lv_style_set_width(&section_label_style, 20U); // Tick length
    lv_style_set_line_width(&section_minor_tick_style, 4U); // Tick width

    /* Configure section styles */
    lv_scale_section_t * section = lv_scale_add_section(scale);
    lv_scale_section_set_range(section, 25, 30);
    lv_scale_section_set_style(section, LV_PART_INDICATOR, &section_label_style);
    lv_scale_section_set_style(section, LV_PART_ITEMS, &section_minor_tick_style);
}

#endif