[Request dev-7.0] another type of lv_draw_mask_param_t : lv_draw_mask_text_param_t

Feature request
10

I’ve just updated lv_objmask to translate to mask coordinates to relative. There were minor API changes as well.

Here are two example:

void text_mask(void)
{
    static lv_style_t style;
    lv_style_copy(&style, &lv_style_plain);
    style.text.color = LV_COLOR_WHITE;
    style.text.font = &lv_font_roboto_28;
    style.body.main_color = LV_COLOR_RED;
    style.body.grad_color = LV_COLOR_LIME;

    /*Create a mask map with a canvas*/
    static uint8_t buf[LV_IMG_BUF_SIZE_ALPHA_8BIT(200, 30)];
    lv_obj_t * canvas = lv_canvas_create(lv_scr_act(), NULL);
    lv_canvas_set_buffer(canvas, buf, 200, 30, LV_IMG_CF_ALPHA_8BIT);
    memset(buf, 0x00, sizeof(buf));
    lv_canvas_draw_text(canvas, 0, 0, 200, &style, "Hello world", LV_LABEL_ALIGN_LEFT);

    lv_obj_del(canvas);  /*Not required anymore, only `buf` will be used*/

    /*Create a masker object. Everything is drawn on this object will be masked*/
    lv_obj_t * mask = lv_objmask_create(lv_scr_act(), NULL);

    /*Add a the mask map to the masking object.*/
    lv_draw_mask_map_param_t mp;
    lv_area_t area;
    area.x1 = 0;
    area.y1 = 0;
    area.x2 = 199;
    area.y2 = 29;
    lv_draw_mask_map_init(&mp, &area, buf);
    lv_objmask_add_mask(mask, &mp);
    lv_obj_set_size(mask, 200, 30);
    lv_obj_set_drag(mask, true);

    /* Create a simple object with a gradient style.
     * (Image can be used too)*/
    lv_obj_t * obj = lv_obj_create(mask, NULL);
    lv_obj_set_size(obj, 200, 30);
    lv_obj_set_style(obj, &style);
    lv_obj_set_click(obj, false);
}

lv_objmask_mask_t * m1;
void angle_mask_anim(lv_obj_t * objmask, lv_anim_value_t v)
{
    lv_draw_mask_angle_param_t mp;
    lv_draw_mask_angle_init(&mp, 100, 100, 0, v);

    lv_objmask_upadte_mask(objmask, m1, &mp);
}

void angle_mask(void)
{
    static lv_style_t style;
    lv_style_copy(&style, &lv_style_plain);
    style.body.main_color = LV_COLOR_RED;
    style.body.grad_color = LV_COLOR_LIME;

    /*Create a masker object. Everything is drawn on this object will be masked*/
    lv_obj_t * mask = lv_objmask_create(lv_scr_act(), NULL);

    /*Add a the mask map to the masking object.*/
    lv_draw_mask_angle_param_t mp;
    lv_draw_mask_angle_init(&mp, 100, 100, 0, 30);
    m1 = lv_objmask_add_mask(mask, &mp);
    lv_obj_set_size(mask, 200, 200);
    lv_obj_set_drag(mask, true);

    /* Create a simple object with a gradient style.
     * (Image can be used too)*/
    lv_obj_t * obj = lv_obj_create(mask, NULL);
    lv_obj_set_size(obj, 200, 200);
    lv_obj_set_style(obj, &style);
    lv_obj_set_click(obj, false);

    lv_anim_t a;
    lv_anim_init(&a);
    lv_anim_set_exec_cb(&a, mask, (lv_anim_exec_xcb_t)angle_mask_anim);
    lv_anim_set_values(&a, 10, 330);
    lv_anim_set_time(&a, 2000, 0);
    lv_anim_set_playback(&a, 200);
    lv_anim_set_repeat(&a, 200);
    lv_anim_create(&a);
}


...

    text_mask();
    angle_mask();

msk

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