LVGL V8之Image styles

创建style

• 初时化style

    static lv_style_t style;
    lv_style_init(&style);

• 设置倒角为15

lv_style_set_radius(&style, 15);

• 设置背景透明度为不透明

  lv_style_set_bg_opa(&style, LV_OPA_COVER);

• 设置背景色为淡灰色

  lv_style_set_bg_color(&style, lv_palette_lighten(LV_PALETTE_GREY, 3));

• 设置边框线宽为2

 lv_style_set_border_width(&style, 2);

• 设置边框颜色为蓝色

lv_style_set_border_color(&style, lv_palette_main(LV_PALETTE_BLUE));

• 设置image重色着色为蓝色

  lv_style_set_img_recolor(&style, lv_palette_main(LV_PALETTE_BLUE));

• 设置image重新着色透明度为50%

 lv_style_set_img_recolor_opa(&style, LV_OPA_50);

• 设置transform angle

  lv_style_set_transform_angle(&style, 300);

• 创建obj,添加style

    lv_obj_t* obj = lv_img_create(lv_scr_act());
    lv_obj_add_style(obj, &style, 0);

• 声明image变量

LV_IMG_DECLARE(img_cogwheel_argb);

• 设置image图片资源

  lv_img_set_src(obj, &img_cogwheel_argb);

• 居中显示

 lv_obj_center(obj);

完整代码，仅供参考

static void lv_example_style_6(void)
{
    static lv_style_t style;
    lv_style_init(&style);
    /*Set a background color and a radius*/
    lv_style_set_radius(&style,15);
    lv_style_set_bg_opa(&style, LV_OPA_COVER);
    lv_style_set_bg_color(&style, lv_palette_lighten(LV_PALETTE_GREY, 3));
    lv_style_set_border_width(&style, 2);
    lv_style_set_border_color(&style, lv_palette_main(LV_PALETTE_BLUE));
    lv_style_set_img_recolor(&style, lv_palette_main(LV_PALETTE_BLUE));
    lv_style_set_img_recolor_opa(&style, LV_OPA_50);
    lv_style_set_transform_angle(&style, 300);
    /*Create an object with the new style*/
    lv_obj_t* obj = lv_img_create(lv_scr_act());
    lv_obj_add_style(obj, &style, 0);
    LV_IMG_DECLARE(img_cogwheel_argb);
    lv_img_set_src(obj, &img_cogwheel_argb);
    lv_obj_center(obj);
}

• 需要配置下，否则会编译不通过

调用lv_example_style_6运行效果

• 修改image着色为红色

 lv_style_set_img_recolor(&style, lv_palette_main(LV_PALETTE_RED));

• 效果图