【STM32 .Net MF开发板学习-03】TinyGUI绘图示例

TinyGUI接口非常简单，相关声明如下：

    public sealed class Graphics

    {

        public Graphics();

        public static void Clear(uint color);

        public static void DrawEllipse(int x, int y, int width, int height, uint color);

        public static void DrawImage(int x, int y, byte[] bytData);

        public static void DrawImageEx(int x, int y, byte[] bytData, uint MaskColor);

        public static void DrawLine(int x1, int y1, int x2, int y2, uint color);

        public static void DrawRectangle(int x, int y, int width, int height, uint color);

        public static void DrawString(int x, int y, string s, uint color);

        public static void FillEllipse(int x, int y, int width, int height, uint color);

        public static void FillRectangle(int x, int y, int width, int height, uint color);

        public static uint GetPixel(int x, int y);

        public static void Print(string str);

        public static void SetPixel(int x, int y, uint color);

    }

相关绘图示例如下（这就是我以前提供图形示例pe文件的源码）

public static void Main()

        { 

            uint[] colors = new uint[]{Color.Black, Color.Red,Color.Green, Color.Orange,Color.Yellow, Color.Brown,Color.Purple, Color.Gray,

                                   Color.DarkGray, Color.LightGray,Color.Blue, Color.Magenta,Color.Cyan, Color.White,Color.LightGreen};

            Graphics.Clear(Color.Blue);

            int x, y, width, height,c;

            long index = 0;

            Random rnd = new Random();

            while (true)

            {

                x = rnd.Next(239);

                width = rnd.Next(239 - x);

                y = rnd.Next(319);

                height = rnd.Next(319 - y);

                c = rnd.Next(colors.Length-1);

                switch (index % 3)

                {

                    case 0:

                        if (rnd.Next(10) > 5)

                            Graphics.DrawRectangle(x, y, width, height, colors[c]);

                        else

                            Graphics.FillRectangle(x, y, width, height, colors[c]);

                        break;

                    case 1:

                        if (rnd.Next(10) > 5)

                            Graphics.DrawEllipse(x, y, width, height, colors[c]);

                            Graphics.FillEllipse(x, y, width, height, colors[c]);

                    case 2:

                        Graphics.DrawLine(x, y, rnd.Next(239), rnd.Next(319), colors[c]);

                }

                Graphics.FillRectangle(0, 300, 239, 19, Color.White);

                Graphics.DrawString(2, 303, (index++).ToString(), Color.Blue);               

                Thread.Sleep(50);

            }

         }

代码比较简单，这里我就不过多解释了。需要说明的是，该程序不能直接在模拟器中运行，并且需要引用System.TinyGUI.dll库。

运行后的结果如下：

至于如何制作和显示TinyBMP格式的位图我们下篇文章再进行介绍。

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