WhyCan Forum(哇酷开发者社区)

马前卒

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注册时间： 2020-08-08

已发帖子： 60

积分： 57

请问 littlevgl / lvgl 如何实现这种布局效果?

马前卒

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注册时间： 2020-08-08

已发帖子： 60

积分： 57

Re: 请问 littlevgl / lvgl 如何实现这种布局效果?

用一堆垃圾代码, 设置控件宽度和绝对坐标, 终于初步实现效果了:

	lv_disp_size_t disp_size = lv_disp_get_size_category(NULL);
	lv_coord_t grid_w = lv_page_get_width_grid(parent, disp_size <= LV_DISP_SIZE_SMALL ? 1 : 2, 1);

	lv_obj_t* cont1 = lv_cont_create(parent, NULL);
	lv_cont_set_layout(cont1, LV_LAYOUT_OFF);
	//lv_obj_add_style(cont1, LV_CONT_PART_MAIN, &style_box);
	lv_obj_set_drag_parent(cont1, true);
	//lv_obj_set_style_local_value_str(cont1, LV_CONT_PART_MAIN, LV_STATE_DEFAULT, "Basics");
	//lv_cont_set_fit2(cont1, LV_FIT_NONE, LV_FIT_TIGHT);
	lv_obj_set_width(cont1, grid_w);
	lv_obj_set_height(cont1, 350);

	lv_obj_t* label1 = lv_label_create(cont1, NULL);
	lv_obj_t* label2 = lv_label_create(cont1, NULL);
	lv_obj_t* label3 = lv_label_create(cont1, NULL);
	lv_label_set_text(label1, "Name:");
	lv_label_set_text(label2, "Age:");
	lv_label_set_text(label3, "Address:");
	//lv_obj_set_fit2(label1, LV_FIT_NONE, LV_FIT_TIGHT);
	//lv_label_set_fit2(label2, LV_FIT_NONE, LV_FIT_TIGHT);
	lv_obj_set_pos(label1, 50, 20);
	lv_obj_set_pos(label2, 50, 60);
	lv_obj_set_pos(label3, 50, 100);
	lv_obj_set_width(label1, 144);
	lv_obj_set_width(label2, 200);
	lv_obj_set_width(label3, 200);

	lv_obj_t * ta = lv_textarea_create(cont1, NULL);
	//lv_cont_set_fit2(ta, LV_FIT_PARENT, LV_FIT_NONE);
	lv_textarea_set_text(ta, "");
	lv_textarea_set_placeholder_text(ta, "name");
	lv_textarea_set_one_line(ta, true);
	lv_textarea_set_cursor_hidden(ta, true);
	//lv_obj_set_event_cb(ta, ta_event_cb);
	lv_obj_set_pos(ta, 150, 10);
	lv_obj_set_width(ta, 100);
	

	lv_obj_t * ta2 = lv_textarea_create(cont1, NULL);
	//lv_cont_set_fit2(ta, LV_FIT_PARENT, LV_FIT_NONE);
	lv_textarea_set_text(ta2, "");
	lv_textarea_set_placeholder_text(ta2, "age");
	lv_textarea_set_one_line(ta2, true);
	lv_textarea_set_cursor_hidden(ta2, true);
	//lv_obj_set_event_cb(ta2, ta_event_cb);
	lv_obj_set_pos(ta2, 150, 50);
	lv_obj_set_width(ta2, 100);
#if 1
	lv_obj_t * ta3 = lv_textarea_create(cont1, NULL);
	//lv_cont_set_fit2(ta, LV_FIT_PARENT, LV_FIT_NONE);
	lv_textarea_set_text(ta3, "");
	lv_textarea_set_placeholder_text(ta3, "address");
	lv_textarea_set_one_line(ta3, true);
	lv_textarea_set_cursor_hidden(ta3, true);
	//lv_obj_set_event_cb(ta2, ta_event_cb);
	lv_obj_set_pos(ta3, 50, 130);
	lv_obj_set_width(ta3, 200);
#endif

马前卒

会员

注册时间： 2020-08-08

已发帖子： 60

积分： 57

Re: 请问 littlevgl / lvgl 如何实现这种布局效果?

label设成同一个宽度不行吗？

不行, 还受制于其他控件和外面的父控件的宽度.

马前卒

会员

注册时间： 2020-08-08

已发帖子： 60

积分： 57

Re: 请问 littlevgl / lvgl 如何实现这种布局效果?

设置页面布局:

lv_page_set_scrl_layout(parent, LV_LAYOUT_PRETTY_TOP);

页面里面创建6个 lv_cont:

#define WIDTH_WATCH_VIEW 265

	lv_obj_t* cont2 = lv_cont_create(parent, NULL);
	lv_obj_set_width(cont2, WIDTH_WATCH_VIEW);
	lv_obj_set_height(cont2, 200);
	//lv_obj_set_pos(cont2, 245, 0);

	lv_obj_t* cont3 = lv_cont_create(parent, NULL);
	lv_obj_set_width(cont3, WIDTH_WATCH_VIEW);
	lv_obj_set_height(cont3, 200);
	//lv_obj_set_pos(cont3, 490, 0);

	lv_obj_t* cont4 = lv_cont_create(parent, NULL);
	lv_obj_set_width(cont4, WIDTH_WATCH_VIEW);
	lv_obj_set_height(cont4, 200);
	//lv_obj_set_pos(cont4, 0, 205);

	lv_obj_t* cont5 = lv_cont_create(parent, NULL);
	lv_obj_set_width(cont5, WIDTH_WATCH_VIEW);
	lv_obj_set_height(cont5, 200);

	lv_obj_t* cont6 = lv_cont_create(parent, NULL);
	lv_obj_set_width(cont6, WIDTH_WATCH_VIEW);
	lv_obj_set_height(cont6, 200);

lv_theme_material.c 这个代码

    style_init_reset(&styles->tabview_page_scrl);
    lv_style_set_pad_top(&styles->tabview_page_scrl, LV_STATE_DEFAULT, PAD_DEF);
    lv_style_set_pad_bottom(&styles->tabview_page_scrl, LV_STATE_DEFAULT, PAD_DEF);
    lv_style_set_pad_left(&styles->tabview_page_scrl, LV_STATE_DEFAULT, PAD_DEF);
    lv_style_set_pad_right(&styles->tabview_page_scrl, LV_STATE_DEFAULT, PAD_DEF);
    lv_style_set_pad_inner(&styles->tabview_page_scrl, LV_STATE_DEFAULT, PAD_DEF);

改为:

    style_init_reset(&styles->tabview_page_scrl);
    lv_style_set_pad_top(&styles->tabview_page_scrl, LV_STATE_DEFAULT, 1);
    lv_style_set_pad_bottom(&styles->tabview_page_scrl, LV_STATE_DEFAULT, 1);
    lv_style_set_pad_left(&styles->tabview_page_scrl, LV_STATE_DEFAULT, 1);
    lv_style_set_pad_right(&styles->tabview_page_scrl, LV_STATE_DEFAULT, 1);
    lv_style_set_pad_inner(&styles->tabview_page_scrl, LV_STATE_DEFAULT, 1);