使用填充函数，在 LCD 上绘制电池图标。
首先先放一张效果图。
这个驱动可以绘制四种不同方向的电池图标，颜色、线宽可以自由配置，电量显示范围 0%~100%。
实现代码如下。
/*********************************************************************************************************
* 函数名称： GUIDrawBatIcon
* 函数功能： 绘制电池图标
* 输入参数： x，y ：整型变量。原点坐标。
* width ：整型变量。宽度。
* height ：整型变量。高度。
* lineSize ：整型变量。线条宽度。线条宽度为偶数的时候显示会异常？？？
* edgeColor：整型变量。边沿线条颜色。
* batColor ：整型变量。剩余电量颜色。
* direction：整型变量。电池方向。0-朝左，1-朝右，2-朝上，3-朝下。
* remain ：整型变量。剩余电量，取值 0-100，表示 0-100% 电量
* 输出参数： void
* 返 回 值： void
* 创建日期： 2023年10月18日
* 注 意：
*********************************************************************************************************/
void GUIDrawBatIcon(const unsigned int x, const unsigned int y, const unsigned int width, const unsigned int height,
unsigned int lineSize, unsigned int edgeColor, unsigned int batColor, unsigned int direction, unsigned int remain)
{
typedef struct
{
unsigned int x;
unsigned int y;
}StructBatCoord;
StructBatCoord coord[8];
unsigned int x0, y0, x1, y1, space, tWidth, tHeight, tx, ty;
//参数校验
if((0 == width) || (0 == height) || (0 == lineSize) || (direction > 3)) { return; }
//电量超过 100，强制定义为 100
if (remain > 100)
{
remain = 100;
}
/*
* 1____________________2
* 7__| |
* | 0 |
* |__5 |
* 6 |____________________|
* 4 3
*
* 电池正极突起高度固定为整体高度的 10%
* 电池正极直径为整个电池直径的 50%
*/
if (0 == direction)
{
//求各个点之间的坐标
space = width / 10;
coord[0].x = x + space - 1;
coord[0].y = y + (height / 4) - 1;
coord[1].x = coord[0].x;
coord[1].y = y;
coord[2].x = x + width - 1;
coord[2].y = y;
coord[3].x = coord[2].x;
coord[3].y = y + height - 1;
coord[4].x = coord[0].x;
coord[4].y = coord[3].y;
coord[5].x = coord[0].x;
coord[5].y = coord[4].y - (height / 4) + 1;
coord[6].x = x;
coord[6].y = coord[5].y;
coord[7].x = x;
coord[7].y = coord[0].y;
//绘制缺口
x0 = coord[1].x; y0 = coord[1].y; x1 = coord[2].x; y1 = coord[2].y + lineSize - 1; GUIFillColor(x0, y0, x1, y1, edgeColor);
x0 = coord[2].x - lineSize + 1; y0 = coord[2].y; x1 = coord[3].x; y1 = coord[3].y; GUIFillColor(x0, y0, x1, y1, edgeColor);
x0 = coord[4].x; y0 = coord[4].y - lineSize + 1; x1 = coord[3].x; y1 = coord[3].y; GUIFillColor(x0, y0, x1, y1, edgeColor);
//画正极竖线
x0 = coord[1].x; y0 = coord[1].y; x1 = coord[0].x + lineSize - 1; y1 = coord[0].y; GUIFillColor(x0, y0, x1, y1, edgeColor);
x0 = coord[5].x; y0 = coord[5].y; x1 = coord[4].x + lineSize - 1; y1 = coord[4].y; GUIFillColor(x0, y0, x1, y1, edgeColor);
x0 = coord[7].x; y0 = coord[7].y; x1 = coord[6].x + lineSize - 1; y1 = coord[6].y; GUIFillColor(x0, y0, x1, y1, edgeColor);
//画正极横线
x0 = coord[7].x; y0 = coord[7].y; x1 = coord[0].x + lineSize - 1; y1 = coord[0].y + lineSize - 1; GUIFillColor(x0, y0, x1, y1, edgeColor);
x0 = coord[6].x; y0 = coord[6].y - lineSize + 1; x1 = coord[5].x + lineSize - 1; y1 = coord[5].y; GUIFillColor(x0, y0, x1, y1, edgeColor);
//电量为零，直接返回
if (0 == remain) { return; }
//确定电池主体部分内部区域坐标
x0 = coord[1].x + lineSize;
x1 = coord[2].x - lineSize;
y0 = coord[1].y + lineSize;
y1 = coord[4].y - lineSize;
tWidth = x1 - x0 + 1;
tHeight = y1 - y0 + 1;
//填充小于等于 90 的部分
tx = x1 - remain * tWidth / 90;
if (tx > x0) { x0 = tx; }
GUIFillColor(x0, y0, x1, y1, batColor);
//确定正极部分内部区域坐标
x0 = coord[7].x + lineSize;
x1 = coord[1].x + lineSize - 1;
y0 = coord[7].y + lineSize;
y1 = coord[6].y - lineSize;
tWidth = x1 - x0 + 1;
tHeight = y1 - y0 + 1;
//填充正极部分部分
if (remain > 90)
{
remain = remain - 90;
tx = x1 - remain * tWidth / 10;
if (tx > x0) { x0 = tx; }
GUIFillColor(x0, y0, x1, y1, batColor);
}
}
/*
* 0____________________1
* | |__3
* | 2 |
* | 5__|
* |____________________| 4
* 7 6
*
* 电池正极突起高度固定为整体高度的 10%
* 电池正极直径为整个电池直径的 50%
*/
else if (1 == direction)
{
//求各个点之间的坐标
space = width / 10;
coord[0].x = x;
coord[0].y = y;
coord[1].x = (x + width - 1) - space + 1;
coord[1].y = y;
coord[2].x = coord[1].x;
coord[2].y = y + (height / 4) - 1;
coord[3].x = x + width - 1;
coord[3].y = coord[2].y;
coord[4].x = coord[3].x;
coord[4].y = (y + height - 1) - (height / 4) + 1;
coord[5].x = coord[1].x;
coord[5].y = coord[4].y;
coord[6].x = coord[1].x;
coord[6].y = y + height - 1;
coord[7].x = x;
coord[7].y = coord[6].y;
//绘制缺口
x0 = coord[0].x; y0 = coord[0].y; x1 = coord[1].x; y1 = coord[1].y + lineSize - 1; GUIFillColor(x0, y0, x1, y1, edgeColor);
x0 = coord[7].x; y0 = coord[7].y - lineSize + 1; x1 = coord[6].x; y1 = coord[6].y; GUIFillColor(x0, y0, x1, y1, edgeColor);
x0 = coord[0].x; y0 = coord[0].y; x1 = coord[7].x + lineSize - 1; y1 = coord[7].y; GUIFillColor(x0, y0, x1, y1, edgeColor);
//画正极竖线
x0 = coord[1].x - lineSize + 1; y0 = coord[1].y; x1 = coord[2].x; y1 = coord[2].y; GUIFillColor(x0, y0, x1, y1, edgeColor);
x0 = coord[5].x - lineSize + 1; y0 = coord[5].y; x1 = coord[6].x; y1 = coord[6].y; GUIFillColor(x0, y0, x1, y1, edgeColor);
x0 = coord[3].x - lineSize + 1; y0 = coord[3].y; x1 = coord[4].x; y1 = coord[4].y; GUIFillColor(x0, y0, x1, y1, edgeColor);
//画正极横线
x0 = coord[2].x - lineSize + 1; y0 = coord[2].y; x1 = coord[3].x; y1 = coord[3].y + lineSize - 1; GUIFillColor(x0, y0, x1, y1, edgeColor);
x0 = coord[5].x - lineSize + 1; y0 = coord[5].y - lineSize + 1; x1 = coord[4].x; y1 = coord[4].y; GUIFillColor(x0, y0, x1, y1, edgeColor);
//电量为零，直接返回
if (0 == remain)
{
return;
}
//确定电池主体部分内部区域坐标
x0 = coord[0].x + lineSize;
x1 = coord[1].x - lineSize;
y0 = coord[0].y + lineSize;
y1 = coord[7].y - lineSize;
tWidth = x1 - x0 + 1;
tHeight = y1 - y0 + 1;
//填充小于等于 90 的部分
tx = x0 + remain * tWidth / 90;
if (tx < x1) { x1 = tx; }
GUIFillColor(x0, y0, x1, y1, batColor);
//确定正极部分内部区域坐标
x0 = coord[2].x - lineSize + 1;
x1 = coord[3].x - lineSize;
y0 = coord[2].y + lineSize;
y1 = coord[5].y - lineSize;
tWidth = x1 - x0 + 1;
tHeight = y1 - y0 + 1;
//填充正极部分部分
if (remain > 90)
{
remain = remain - 90;
tx = x0 + remain * tWidth / 10;
if (tx < x1) { x1 = tx; }
GUIFillColor(x0, y0, x1, y1, batColor);
}
}
/*
* 0____1
* 6___| |___3
* | 7 2 |
* | |
* | |
* | |
* | |
* | |
* |____________|
* 5 4
*
* 电池正极突起高度固定为整体高度的 10%
* 电池正极直径为整个电池直径的 50%
*/
else if (2 == direction)
{
//求各个点之间的坐标
space = height / 10;
coord[0].x = x + (width / 4) - 1;
coord[0].y = y;
coord[1].x = (x + width - 1) - (width / 4) + 1;
coord[1].y = y;
coord[2].x = coord[1].x;
coord[2].y = y + space - 1;
coord[3].x = x + width - 1;
coord[3].y = coord[2].y;
coord[4].x = coord[3].x;
coord[4].y = y + height - 1;
coord[5].x = x;
coord[5].y = coord[4].y;
coord[6].x = x;
coord[6].y = coord[2].y;
coord[7].x = coord[0].x;
coord[7].y = coord[6].y;
//绘制缺口
x0 = coord[6].x; y0 = coord[6].y; x1 = coord[5].x + lineSize - 1; y1 = coord[5].y; GUIFillColor(x0, y0, x1, y1, edgeColor);
x0 = coord[5].x; y0 = coord[5].y - lineSize + 1; x1 = coord[4].x; y1 = coord[4].y; GUIFillColor(x0, y0, x1, y1, edgeColor);
x0 = coord[3].x - lineSize + 1; y0 = coord[3].y; x1 = coord[4].x; y1 = coord[4].y; GUIFillColor(x0, y0, x1, y1, edgeColor);
//画正极横线
x0 = coord[6].x; y0 = coord[6].y; x1 = coord[7].x; y1 = coord[7].y + lineSize - 1; GUIFillColor(x0, y0, x1, y1, edgeColor);
x0 = coord[0].x; y0 = coord[0].y; x1 = coord[1].x; y1 = coord[1].y + lineSize - 1; GUIFillColor(x0, y0, x1, y1, edgeColor);
x0 = coord[2].x; y0 = coord[2].y; x1 = coord[3].x; y1 = coord[3].y + lineSize - 1; GUIFillColor(x0, y0, x1, y1, edgeColor);
//画正极竖线
x0 = coord[0].x; y0 = coord[0].y; x1 = coord[7].x + lineSize - 1; y1 = coord[7].y + lineSize - 1; GUIFillColor(x0, y0, x1, y1, edgeColor);
x0 = coord[1].x - lineSize + 1; y0 = coord[1].y; x1 = coord[2].x; y1 = coord[2].y + lineSize - 1; GUIFillColor(x0, y0, x1, y1, edgeColor);
//电量为零，直接返回
if (0 == remain) { return; }
//确定电池主体部分内部区域坐标
x0 = coord[6].x + lineSize;
x1 = coord[3].x - lineSize;
y0 = coord[6].y + lineSize;
y1 = coord[5].y - lineSize;
tWidth = x1 - x0 + 1;
tHeight = y1 - y0 + 1;
//填充小于等于 90 的部分
ty = y1 - remain * tHeight / 90;
if(ty > y0) { y0 = ty; }
GUIFillColor(x0, y0, x1, y1, batColor);
//确定正极部分内部区域坐标
x0 = coord[0].x + lineSize;
x1 = coord[1].x - lineSize;
y0 = coord[0].y + lineSize;
y1 = coord[7].y + lineSize - 1;
tWidth = x1 - x0 + 1;
tHeight = y1 - y0 + 1;
//填充正极部分部分
if (remain > 90)
{
remain = remain - 90;
ty = y1 - remain * tHeight / 10;
if (ty > y0) { y0 = ty; }
GUIFillColor(x0, y0, x1, y1, batColor);
}
}
/*
* 0____________1
* | |
* | |
* | |
* | |
* | |
* | |
* |___6 3___|
* 7 |____| 2
* 5 4
*
* 电池正极突起高度固定为整体高度的 10%
* 电池正极直径为整个电池直径的 50%
*/
else if (3 == direction)
{
//求各个点之间的坐标
space = height / 10;
coord[0].x = x;
coord[0].y = y;
coord[1].x = x + width - 1;
coord[1].y = coord[0].y;
coord[2].x = coord[1].x;
coord[2].y = (y + height - 1) - space + 1;
coord[3].x = (x + width - 1) - (width / 4) + 1;
coord[3].y = coord[2].y;
coord[4].x = coord[3].x;
coord[4].y = y + height - 1;
coord[5].x = x + (width / 4) / 1;
coord[5].y = coord[4].y;
coord[6].x = coord[5].x;
coord[6].y = coord[2].y;
coord[7].x = coord[0].x;
coord[7].y = coord[6].y;
//绘制缺口
x0 = coord[0].x; y0 = coord[0].y; x1 = coord[7].x + lineSize - 1; y1 = coord[7].y; GUIFillColor(x0, y0, x1, y1, edgeColor);
x0 = coord[0].x; y0 = coord[0].y; x1 = coord[1].x; y1 = coord[1].y + lineSize - 1; GUIFillColor(x0, y0, x1, y1, edgeColor);
x0 = coord[1].x - lineSize + 1; y0 = coord[1].y; x1 = coord[2].x; y1 = coord[2].y; GUIFillColor(x0, y0, x1, y1, edgeColor);
//画正极横线
x0 = coord[7].x; y0 = coord[7].y - lineSize + 1; x1 = coord[6].x; y1 = coord[6].y; GUIFillColor(x0, y0, x1, y1, edgeColor);
x0 = coord[5].x; y0 = coord[5].y - lineSize + 1; x1 = coord[4].x; y1 = coord[4].y; GUIFillColor(x0, y0, x1, y1, edgeColor);
x0 = coord[3].x; y0 = coord[3].y - lineSize + 1; x1 = coord[2].x; y1 = coord[2].y; GUIFillColor(x0, y0, x1, y1, edgeColor);
//画正极竖线
x0 = coord[6].x; y0 = coord[6].y - lineSize + 1; x1 = coord[5].x + lineSize - 1; y1 = coord[5].y; GUIFillColor(x0, y0, x1, y1, edgeColor);
x0 = coord[3].x - lineSize + 1; y0 = coord[3].y - lineSize + 1; x1 = coord[4].x; y1 = coord[4].y; GUIFillColor(x0, y0, x1, y1, edgeColor);
//电量为零，直接返回
if (0 == remain) { return; }
//确定电池主体部分内部区域坐标
x0 = coord[0].x + lineSize;
x1 = coord[1].x - lineSize;
y0 = coord[0].y + lineSize;
y1 = coord[7].y - lineSize;
tWidth = x1 - x0 + 1;
tHeight = y1 - y0 + 1;
//填充小于等于 90 的部分
ty = y0 + remain * tHeight / 90;
if (ty < y1) { y1 = ty; }
GUIFillColor(x0, y0, x1, y1, batColor);
//确定正极部分内部区域坐标
x0 = coord[6].x + lineSize;
x1 = coord[3].x - lineSize;
y0 = coord[6].y - lineSize + 1;
y1 = coord[5].y - lineSize;
tWidth = x1 - x0 + 1;
tHeight = y1 - y0 + 1;
//填充正极部分部分
if (remain > 90)
{
remain = remain - 90;
ty = y0 + remain * tHeight / 10;
if (ty < y1) { y1 = ty; }
GUIFillColor(x0, y0, x1, y1, batColor);
}
}
}