蜂窝菜单 (Menu cellular)

蜂窝菜单控件以蜂窝形状显示一组图标。

用法

创建蜂窝菜单控件

使用 gui_menu_cellular_create() 函数创建蜂窝菜单控件，用户需要提供代表图标集的图像文件数组。

添加点击回调事件

使用 gui_menu_cellular_on_click() 函数添加点击图标的回调事件。

设置偏移

使用 gui_menu_cellular_offset() 函数可以调整水平和垂直偏移以获得更好的显示效果。

开发示例

蜂窝菜单控件的开发示例如下，首先使用画布控件绘制一组纯色图标，再将这些图标传递给蜂窝菜单控件进行显示：

#include "guidef.h"
#include "gui_img.h"
#include "gui_win.h"
#include "gui_obj.h"
#include "gui_canvas.h"
#include "gui_menu_cellular.h"
#include "string.h"
#include "stdio.h"
#include "stdlib.h"
#include "gui_server.h"
#include "gui_components_init.h"

#define ICON_NUM 56
#define ICON_SIZE gui_get_screen_width() / 4

static size_t buffer_size = 0;
NVGcolor color[] =
{
    {1.0f, 1.0f, 1.0f, 1.0f}, //white
    {1.0f, 0, 0, 1.0f},       //red
    {0, 1.0f, 0, 1.0f},       //green
    {0, 0, 1.0f, 1.0f},       //blue
};
static uint8_t color_index = 0;

static void draw_circle_cb(NVGcontext *vg)
{
    nvgBeginPath(vg);
    nvgCircle(vg, ICON_SIZE / 2.0f, ICON_SIZE / 2.0f, ICON_SIZE / 2.0f);
    nvgFillColor(vg, color[color_index++]);
    nvgFill(vg);
    color_index %= 4;
}

static int app_init(void)
{
    uint32_t *img_data_array[ICON_NUM] = {0};
    for (int i = 0; i < ICON_NUM; i++)
    {
        int image_h = ICON_SIZE;
        int image_w = ICON_SIZE;
        int pixel_bytes = 4;
        buffer_size = image_h * image_w * pixel_bytes + sizeof(gui_rgb_data_head_t);
        img_data_array[i] = gui_lower_malloc(buffer_size);
        memset(img_data_array[i], 0, buffer_size);
        gui_canvas_render_to_image_buffer(GUI_CANVAS_OUTPUT_RGBA, 0, image_w, image_h, draw_circle_cb,
                                          (uint8_t *)img_data_array[i]);

    }
    int array_size = sizeof(img_data_array) / sizeof(img_data_array[0]);
    gui_menu_cellular_t *menu = gui_menu_cellular_create(gui_obj_get_root(), ICON_SIZE, img_data_array,
                                                         array_size);

    return 0;
}

GUI_INIT_APP_EXPORT(app_init);

API

Functions

gui_menu_cellular_t *gui_menu_cellular_create(void *parent, int icon_size, uint32_t *icon_array[], int array_size)

Create a menu_cellular widget.

Parameters

• parent -- Father widget it nested in.

• icon_size -- Size of icon.

• icon_array -- Icons' image data address array.

• array_size -- Size of array.

Returns

Menu_cellular pointer.

void gui_menu_cellular_offset(gui_menu_cellular_t *menu_cellular, int offset_x, int offset_y)

Config offset.

Parameters

• menu_cellular -- Menu_cellular pointer.

• offset_x -- X-axis offset.

• offset_y -- Y-axis offset.

void gui_menu_cellular_on_click(gui_menu_cellular_t *menu_cellular, struct gui_menu_cellular_gesture_parameter *para_array, int array_length)

Add click events on images based on the cellular menu.

Parameters

• menu_cellular -- Menu_cellular pointer.

• para_array -- Array of gesture parameters corresponding to the click event.

• array_length -- Length of the gesture parameters array.

struct gui_menu_cellular_t

Menu_cellular structure.

Public Members

gui_obj_t base

int16_t ver_speed

int16_t ver_record[5]

int16_t ver_hold

int16_t hor_hold

int16_t ver_offset

Vertical offset.

int16_t hor_offset

Horizontal offset.

int16_t ver_offset_min

Minimum vertical offset.

int16_t icon_size

struct gui_menu_cellular_gesture_parameter

Public Members

gui_event_cb_t callback_function

void *parameter