|
楼主 |
发表于 2013-6-28 16:07:22
|
显示全部楼层
[code=csharp]
#region 移动鼠标发生的事件
private void pictureBox1_MouseMove(object sender, MouseEventArgs e)
{
if (this.Cursor == Cursors.Cross)
{
this.p2 = new Point(e.X, e.Y);
if ((p2.X - p1.X) > 0 && (p2.Y - p1.Y) > 0) //当鼠标从左上角向开始移动时P3坐标
{
this.p3 = new Point(p1.X, p1.Y);
}
if ((p2.X - p1.X) < 0 && (p2.Y - p1.Y) > 0) //当鼠标从右上角向左下方向开始移动时P3坐标
{
this.p3 = new Point(p2.X, p1.Y);
}
if ((p2.X - p1.X) > 0 && (p2.Y - p1.Y) < 0) //当鼠标从左下角向上开始移动时P3坐标
{
this.p3 = new Point(p1.X, p2.Y);
}
if ((p2.X - p1.X) < 0 && (p2.Y - p1.Y) < 0) //当鼠标从右下角向左方向上开始移动时P3坐标
{
this.p3 = new Point(p2.X, p2.Y);
}
this.pictureBox1.Invalidate(); //使控件的整个图面无效,并导致重绘控件
}
}
#endregion
#region 松开鼠标发生的事件,实例化ImageCut1类对像
ImageCut1 IC1; //定义所画矩形的图像对像
private void pictureBox1_MouseUp(object sender, MouseEventArgs e)
{
if (HeadImageBool)
{
width = this.pictureBox1.Image.Width;
heigth = this.pictureBox1.Image.Height;
if ((e.X - x1) > 0 && (e.Y - y1) > 0) //当鼠标从左上角向右下方向开始移动时发生
{
IC1 = new ImageCut1(x1, y1, Math.Abs(e.X - x1), Math.Abs(e.Y - y1)); //实例化ImageCut1类
}
if ((e.X - x1) < 0 && (e.Y - y1) > 0) //当鼠标从右上角向左下方向开始移动时发生
{
IC1 = new ImageCut1(e.X, y1, Math.Abs(e.X - x1), Math.Abs(e.Y - y1)); //实例化ImageCut1类
}
if ((e.X - x1) > 0 && (e.Y - y1) < 0) //当鼠标从左下角向右上方向开始移动时发生
{
IC1 = new ImageCut1(x1, e.Y, Math.Abs(e.X - x1), Math.Abs(e.Y - y1)); //实例化ImageCut1类
}
if ((e.X - x1) < 0 && (e.Y - y1) < 0) //当鼠标从右下角向左上方向开始移动时发生
{
IC1 = new ImageCut1(e.X, e.Y, Math.Abs(e.X - x1), Math.Abs(e.Y - y1)); //实例化ImageCut1类
}
this.pictureBox2.Width = (IC1.KiCut1((Bitmap)(this.pictureBox1.Image))).Width;
this.pictureBox2.Height = (IC1.KiCut1((Bitmap)(this.pictureBox1.Image))).Height;
this.pictureBox2.Image = IC1.KiCut1((Bitmap)(this.pictureBox1.Image));
this.Cursor = Cursors.Default;
}
else
{
this.Cursor = Cursors.Default;
}
}
#endregion
#region 获取所选矩形图像
/// <summary>
///
/// </summary>
/// <param name="Width"></param>
/// <param name="Height"></param>
/// <returns></returns>
public Image GetSelectImage1(int Width, int Height)
{
Image initImage = this.pictureBox1.Image;
//Image initImage = Bi;
//原图宽高均小于模版,不作处理,直接保存
if (initImage.Width <= Width && initImage.Height <= Height)
{
//initImage.Save(fileSaveUrl, System.Drawing.Imaging.ImageFormat.Jpeg);
return initImage;
}
else
{
//原始图片的宽、高
int initWidth = initImage.Width;
int initHeight = initImage.Height;
//非正方型先裁剪为正方型
if (initWidth != initHeight)
{
//截图对象
System.Drawing.Image pickedImage = null;
System.Drawing.Graphics pickedG = null;
//宽大于高的横图
if (initWidth > initHeight)
{
//对象实例化
pickedImage = new System.Drawing.Bitmap(initHeight, initHeight);
pickedG = System.Drawing.Graphics.FromImage(pickedImage);
//设置质量
pickedG.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.HighQualityBicubic;
pickedG.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.HighQuality;
//定位
Rectangle fromR = new Rectangle((initWidth - initHeight) / 2, 0, initHeight, initHeight);
Rectangle toR = new Rectangle(0, 0, initHeight, initHeight);
//画图
pickedG.DrawImage(initImage, toR, fromR, System.Drawing.GraphicsUnit.Pixel);
//重置宽
initWidth = initHeight;
}
//高大于宽的竖图
else
{
//对象实例化
pickedImage = new System.Drawing.Bitmap(initWidth, initWidth);
pickedG = System.Drawing.Graphics.FromImage(pickedImage);
//设置质量
pickedG.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.HighQualityBicubic;
pickedG.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.HighQuality;
//定位
Rectangle fromR = new Rectangle(0, (initHeight - initWidth) / 2, initWidth, initWidth);
Rectangle toR = new Rectangle(0, 0, initWidth, initWidth);
//画图
pickedG.DrawImage(initImage, toR, fromR, System.Drawing.GraphicsUnit.Pixel);
//重置高
initHeight = initWidth;
}
initImage = (System.Drawing.Image)pickedImage.Clone();
// //释放截图资源
pickedG.Dispose();
pickedImage.Dispose();
}
return initImage;
}
}
#endregion
#region 重新绘制pictureBox1控件,即移动鼠标画矩形
private void pictureBox1_Paint(object sender, PaintEventArgs e)
{
if (HeadImageBool)
{
Pen p = new Pen(Color.Black, 1);//画笔
p.DashStyle = System.Drawing.Drawing2D.DashStyle.Dash;
//Bitmap bitmap = new Bitmap(strHeadImagePath);
Bitmap bitmap = Bi;
Rectangle rect = new Rectangle(p3, new Size(System.Math.Abs(p2.X - p1.X), System.Math.Abs(p2.Y - p1.Y)));
e.Graphics.DrawRectangle(p, rect);
}
else
{
}
}
#endregion
}
}
[/code] |
|