监视点渐变 (Watch Gradient Spot)

监视点渐变是一个具有动态水滴效果的指针表盘控件。

用法

创建控件

使用 gui_watch_gradient_spot_create() 函数创建一个具有动态水滴效果的指针表盘控件。

设置中心位置

控件的中心位置可以自由设置，使用 gui_watch_gradient_spot_set_center() 函数改变中心位置，其中 c_x 和 c_y 为中心位置的坐标点。

示例

API

Defines

WATCH_GRADIENT_SPOT_BASE

WATCH_GRADIENT_SPOT_SCLAE

Functions

NVGcontext *nvgCreateAGGE(uint32_t w, uint32_t h, uint32_t stride, enum NVGtexture format, uint8_t *data)

void nvgDeleteAGGE(NVGcontext *ctx)

gui_watch_gradient_spot_t *gui_watch_gradient_spot_create(void *parent, const char *name, int16_t x, int16_t y, int16_t w, int16_t h)

create a watch widget

Example usage

void example_watch(void *parent)
{
    win_watch = gui_win_create(parent, "win", 0, 0, 368, 448);
    gui_watch_gradient_spot_t *watch = gui_watch_gradient_spot_create(win_watch, "watchface", 0, 0, 0, 0);

}

参数:

parent – parent widget
name – widget name
x – left
y – top
w – width
h – high

返回:

gui_watch_gradient_spot_t* widget pointer

void gui_watch_gradient_spot_set_center(gui_watch_gradient_spot_t *this, float c_x, float c_y)

set watch center

Example usage

void example_watch(void *parent)
{
    win_watch = gui_win_create(parent, "win", 0, 0, 368, 448);
    gui_watch_gradient_spot_t *watch = gui_watch_gradient_spot_create(win_watch, "watchface", 0, 0, 0, 0);
   gui_watch_gradient_spot_t *watch = gui_watch_gradient_spot_set_center(watch, 368 / 2, 448 / 2);

}

参数:

this – gui_watch_gradient_spot_t widget
c_x – left
c_y – top

返回:

void

struct gui_watch_gradient_spot_t

…

Public Members

gui_obj_t base

float c_x

float c_y