using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using System.Drawing.Drawing2D;
using System.Drawing.Imaging;
namespace SolidBrush对象
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
private void button1_Click(object sender, EventArgs e)
{
Graphics ghs = this.CreateGraphics();//创建Graphics对象
Brush mybs = new SolidBrush(Color.Red);
Rectangle rt = new Rectangle(10, 10, 20, 20);
ghs.FillRectangle(mybs, rt);
}
private void button2_Click(object sender, EventArgs e)
{
Graphics ghs = this.CreateGraphics();
for(int i = 0; i < 6; i++)
{
HatchStyle hs = (HatchStyle)(2 + i);
HatchBrush hb = new HatchBrush(hs, Color.Blue);
Rectangle rtl = new Rectangle(10, 50 * i, 50 * i, 50);
ghs.FillRectangle(hb, rtl);
}
}
private void button3_Click(object sender, EventArgs e)
{
Point p1 = new Point(100, 100);
Point p2 = new Point(200, 200);
Graphics ghs = this.CreateGraphics();
LinearGradientBrush lgb = new LinearGradientBrush(p1, p2, Color.Black, Color.White);
lgb.WrapMode = WrapMode.TileFlipX;
ghs.FillRectangle(lgb, 100, 100, 200, 200);
}
private void button4_Click(object sender, EventArgs e)
{
//横向直线
Pen blackPen = new Pen(Color.Black, 3);
Point p1 = new Point(10, 50);
Point p2 = new Point(100, 50);
Graphics ghs = this.CreateGraphics();
ghs.DrawLine(blackPen, p1, p2);
}
private void button5_Click(object sender, EventArgs e)
{
Pen blackPen = new Pen(Color.Black, 3);
Point p1 = new Point(10, 10);
Point p2 = new Point(10, 100);
Graphics ghs = this.CreateGraphics();
ghs.DrawLine(blackPen, p1, p2);
}
private void button6_Click(object sender, EventArgs e)
{
Graphics graphics = this.CreateGraphics();
Pen myPen = new Pen(Color.Black, 3);
graphics.DrawEllipse(myPen, 100, 100, 50, 100);
}
private void button7_Click(object sender, EventArgs e)
{
Graphics ghs = this.CreateGraphics();
Pen mypen = new Pen(Color.Black, 3);
Rectangle myRectangle = new Rectangle(70, 20, 100, 60);
ghs.DrawArc(mypen, myRectangle, 30, 120);
}
private void button8_Click(object sender, EventArgs e)
{
Graphics ghs = this.CreateGraphics();
Pen mypen = new Pen(Color.Black, 3);
ghs.DrawPie(mypen, 50, 50, 120, 100, 210, 120);
}
private void button9_Click(object sender, EventArgs e)
{
Graphics ghs = this.CreateGraphics();
Pen mypen = new Pen(Color.Black, 3);
Point p1 = new Point(80, 20);
Point p2 = new Point(30, 40);
Point p3 = new Point(160, 100);
Point[] mypoints = { p1, p2, p3 };
ghs.DrawPolygon(mypen, mypoints);
}
private void button10_Click(object sender, EventArgs e)
{
string str = "C#和肥猫";
Font myFont = new Font("华文行楷",16);
SolidBrush myBrush = new SolidBrush(Color.Black);
Graphics myGraphics = this.CreateGraphics();
myGraphics.DrawString(str,myFont,myBrush,20,20);
}
private void button11_Click(object sender, EventArgs e)
{
//绘制图形
Image myImage = Image.FromFile("1.png");
Graphics myGraphics = this.CreateGraphics();
myGraphics.DrawImage(myImage, 50, 20);
}
private void button12_Click(object sender, EventArgs e)
{
//绘制公章
int diameter = 0;//圆直径
int brushWidth = 4;
diameter = panel1.Width > panel1.Height ? panel1.Height : panel1.Width;
Font Var_Font = new Font("Arial", 12, FontStyle.Bold);//字符串样式
Font star_Font = new Font("Arial", 30, FontStyle.Regular);//星号样式
string star_Str = "★";
Rectangle rect = new Rectangle(10, 10, 160, 160);
rect = new Rectangle(brushWidth, brushWidth, diameter - brushWidth * 2, diameter - brushWidth * 2);
Graphics g = this.panel1.CreateGraphics();
g.SmoothingMode = SmoothingMode.AntiAlias;//消除绘制图形的锯齿
g.Clear(Color.White);//设置Panel1控件的背景色
Pen myPen = new Pen(Color.Red, brushWidth);
g.DrawEllipse(myPen, rect);
SizeF var_Size = new SizeF(rect.Width, rect.Width);
//画星
var_Size = g.MeasureString(star_Str, star_Font);
g.DrawString(star_Str, star_Font, myPen.Brush, new PointF((rect.Width / 2F) + brushWidth - var_Size.Width / 2F, rect.Height / 2F - var_Size.Width / 2F));
//画章
var_Size = g.MeasureString("专用章", Var_Font);
g.DrawString("专用章", Var_Font, myPen.Brush, new PointF((rect.Width / 2F) + brushWidth - var_Size.Width / 2F, rect.Height / 2F + var_Size.Height * 2));
string tempStr = "大猫科技有限公司";
int len = tempStr.Length;
float angle = 180 + (180 - len * 20) / 2;
for (int i = 0; i < len; i++)
{
g.TranslateTransform((diameter + brushWidth / 2) / 2, (diameter + brushWidth / 2) / 2);
g.RotateTransform(angle);
Brush myBrush = Brushes.Red;
g.DrawString(tempStr.Substring(i, 1), Var_Font, myBrush, 60, 0);
g.ResetTransform();
angle += 20;
}
}
private void button13_Click(object sender, EventArgs e)
{
//绘制曲线
Graphics ghs = this.CreateGraphics();
Pen myPen = new Pen(Color.Black, 1);
int beginX = 50;
int beginY = 50;
int height = 35;
int width = 50;
Point pointX1 = new Point(beginX, beginY);
Point pointY1 = new Point(beginX + 210, beginY);
Point pointX2 = new Point(beginX, beginY - 45);
Point pointY2 = new Point(beginX, beginY + 45);
ghs.DrawLine(myPen, pointX1, pointY1);
ghs.DrawLine(myPen, pointX2, pointY2);
//贝塞尔线条
ghs.DrawBezier(myPen, beginX, beginY, beginX + 15, beginY - height, beginX + 40, beginY - height, beginX + width,beginY);
}
//缩放图片
public bool ThumbnailCallback()
{
return true;
}
public bool GetReducedImage(double Percent,string filePath)
{
try
{
Graphics ghs = this.CreateGraphics();
ghs.SmoothingMode = SmoothingMode.AntiAlias;//消除绘制图形的锯齿
ghs.Clear(Color.White);//设置Panel1控件的背景色
Bitmap bt = new Bitmap(200, 200);
Graphics g = Graphics.FromImage(bt);
g.Clear(Color.White);
Image reduceImage;
Image resourceImage = new Bitmap(@"1.jpg");
Image.GetThumbnailImageAbort callb = new Image.GetThumbnailImageAbort(ThumbnailCallback);
int ImageWidth = Convert.ToInt32(resourceImage.Width * Percent);
int ImageHeight = Convert.ToInt32(resourceImage.Height * Percent);
g.DrawImage(resourceImage, 0, 0, ImageWidth, ImageHeight);
bt.Save(@"4.jpg", ImageFormat.Jpeg);
reduceImage = resourceImage.GetThumbnailImage(ImageWidth, ImageHeight, callb, IntPtr.Zero);
if(ImageWidth >ImageHeight)
{
g.DrawImage(reduceImage, 0, (int)(200 - ImageHeight) / 2, ImageWidth, ImageHeight);
}
else
{
g.DrawImage(reduceImage, 0, (int)(200 - ImageWidth) / 2, ImageWidth, ImageHeight);
}
g.DrawRectangle(new Pen(Color.Gray), 0, 0, 199, 199);
bt.Save(@"3.jpg", ImageFormat.Jpeg);
bt.Dispose();
reduceImage.Dispose();
return true;
}
catch(Exception e)
{
MessageBox.Show(e.Message);
return false;
}
}
private void button14_Click(object sender, EventArgs e)
{
GetReducedImage(1, "1.jpg");
}
private void Form1_Load(object sender, EventArgs e)
{
}
//浮雕显示
private void button16_Click(object sender, EventArgs e)
{
try
{
Image resourceImage = new Bitmap(@"1.jpg");
Bitmap mybp = new Bitmap(resourceImage);
for(int i = 0; i < mybp.Width -1;i++)
{
for(int j = 0; j < mybp.Height -1;j++)
{
Color Color1 = mybp.GetPixel(i, j);
Color Color2 = mybp.GetPixel(i + 1, j + 1);
int red = Math.Abs(Color1.R - Color2.R + 128);
int green = Math.Abs(Color1.G - Color2.G + 128);
int blue = Math.Abs(Color1.B - Color2.B+128);
if (red > 225) red = 225;
if (red < 0) red = 0;
if (green > 225) green = 225;
if (green < 0) green = 0;
if (blue > 225) blue = 225;
if (blue < 0) blue = 0;
mybp.SetPixel(i, j, Color.FromArgb(red, green, blue));
}
}
this.BackgroundImage=mybp;
}
catch
{ }
}
//旋转图像
private void button15_Click(object sender, EventArgs e)
{
Bitmap mybp = new Bitmap(200, 200);
Image resourceImage = new Bitmap(@"1.jpg");
Graphics g = this.panel1.CreateGraphics();
float angle = 0;
while(angle < 360)
{
TextureBrush mybrush = new TextureBrush(resourceImage);
this.panel1.Refresh();//使工作区无效
mybrush.RotateTransform(angle);//已制定角度旋转图像
g.FillRectangle(mybrush, 0, 0, this.ClientRectangle.Width, this.ClientRectangle.Height);//绘制旋转后图像
angle += 10f;
System.Threading.Thread.Sleep(50);//使线程休眠50毫秒
}
}
}
}