form1.cs

使用C＃程式語言撰寫的固定為3x3的Convolution濾波器

			this.Zoom100.Text = "100%";
			this.Zoom100.Click += new System.EventHandler(this.OnZoom100);
			// 
			// Zoom150
			// 
			this.Zoom150.Index = 3;
			this.Zoom150.Text = "150%";
			this.Zoom150.Click += new System.EventHandler(this.OnZoom150);
			// 
			// Zoom200
			// 
			this.Zoom200.Index = 4;
			this.Zoom200.Text = "200%";
			this.Zoom200.Click += new System.EventHandler(this.OnZoom200);
			// 
			// Zoom300
			// 
			this.Zoom300.Index = 5;
			this.Zoom300.Text = "300%";
			this.Zoom300.Click += new System.EventHandler(this.OnZoom300);
			// 
			// Zoom500
			// 
			this.Zoom500.Index = 6;
			this.Zoom500.Text = "500%";
			this.Zoom500.Click += new System.EventHandler(this.OnZoom500);
			// 
			// FilterCustom
			// 
			this.FilterCustom.Index = 6;
			this.FilterCustom.Text = "Custom";
			this.FilterCustom.Click += new System.EventHandler(this.OnFilterCustom);
			// 
			// Form1
			// 
			this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
			this.BackColor = System.Drawing.SystemColors.ControlLightLight;
			this.ClientSize = new System.Drawing.Size(488, 421);
			this.Menu = this.mainMenu1;
			this.Name = "Form1";
			this.Text = "Graphic Filters For Dummies";
			this.Load += new System.EventHandler(this.Form1_Load);

		}
		#endregion

		/// <summary>
		/// The main entry point for the application.
		/// </summary>
		[STAThread]
		static void Main() 
		{
			Application.Run(new Form1());
		}

		protected override void OnPaint (PaintEventArgs e)
		{
			Graphics g = e.Graphics;

			g.DrawImage(m_Bitmap, new Rectangle(this.AutoScrollPosition.X, this.AutoScrollPosition.Y, (int)(m_Bitmap.Width*Zoom), (int)(m_Bitmap.Height * Zoom)));
		}

		private void Form1_Load(object sender, System.EventArgs e)
		{
		}

		private void File_Load(object sender, System.EventArgs e)
		{
			OpenFileDialog openFileDialog = new OpenFileDialog();

			openFileDialog.InitialDirectory = "c:\\" ;
			openFileDialog.Filter = "Bitmap files (*.bmp)|*.bmp|Jpeg files (*.jpg)|*.jpg|All valid files (*.bmp/*.jpg)|*.bmp/*.jpg";
			openFileDialog.FilterIndex = 2 ;
			openFileDialog.RestoreDirectory = true ;

			if(DialogResult.OK == openFileDialog.ShowDialog())
			{
				m_Bitmap = (Bitmap)Bitmap.FromFile(openFileDialog.FileName, false);
				this.AutoScroll = true;
				this.AutoScrollMinSize = new Size ((int)(m_Bitmap.Width * Zoom), (int)(m_Bitmap.Height * Zoom));
				this.Invalidate();
			}
		}

		private void File_Save(object sender, System.EventArgs e)
		{
			SaveFileDialog saveFileDialog = new SaveFileDialog();

			saveFileDialog.InitialDirectory = "c:\\" ;
			saveFileDialog.Filter = "Bitmap files (*.bmp)|*.bmp|Jpeg files (*.jpg)|*.jpg|All valid files (*.bmp/*.jpg)|*.bmp/*.jpg" ;
			saveFileDialog.FilterIndex = 1 ;
			saveFileDialog.RestoreDirectory = true ;

			if(DialogResult.OK == saveFileDialog.ShowDialog())
			{
				m_Bitmap.Save(saveFileDialog.FileName);
			}
		}

		private void File_Exit(object sender, System.EventArgs e)
		{
			this.Close();
		}

		private void Filter_Invert(object sender, System.EventArgs e)
		{
			m_Undo = (Bitmap)m_Bitmap.Clone();
			if(BitmapFilter.Invert(m_Bitmap))
				this.Invalidate();
		}

		private void Filter_GrayScale(object sender, System.EventArgs e)
		{
			m_Undo = (Bitmap)m_Bitmap.Clone();
			if(BitmapFilter.GrayScale(m_Bitmap))
				this.Invalidate();
		}

		private void Filter_Brightness(object sender, System.EventArgs e)
		{
			Parameter dlg = new Parameter();
			dlg.nValue = 0;

			if (DialogResult.OK == dlg.ShowDialog())
			{
				m_Undo = (Bitmap)m_Bitmap.Clone();
				if(BitmapFilter.Brightness(m_Bitmap, dlg.nValue))
					this.Invalidate();
			}
		}

		private void Filter_Contrast(object sender, System.EventArgs e)
		{
			Parameter dlg = new Parameter();
			dlg.nValue = 0;

			if (DialogResult.OK == dlg.ShowDialog())
			{
				m_Undo = (Bitmap)m_Bitmap.Clone();
				if(BitmapFilter.Contrast(m_Bitmap, (sbyte)dlg.nValue))
					this.Invalidate();
			}
		
		}

		private void Filter_Gamma(object sender, System.EventArgs e)
		{
			GammaInput dlg = new GammaInput();
			dlg.red = dlg.green = dlg.blue = 1;

			if (DialogResult.OK == dlg.ShowDialog())
			{
				m_Undo = (Bitmap)m_Bitmap.Clone();
				if(BitmapFilter.Gamma(m_Bitmap, dlg.red, dlg.green, dlg.blue))
					this.Invalidate();
			}
		}

		private void Filter_Color(object sender, System.EventArgs e)
		{
			ColorInput dlg = new ColorInput();
			dlg.red = dlg.green = dlg.blue = 0;

			if (DialogResult.OK == dlg.ShowDialog())
			{
				m_Undo = (Bitmap)m_Bitmap.Clone();
				if(BitmapFilter.Color(m_Bitmap, dlg.red, dlg.green, dlg.blue))
					this.Invalidate();
			}
		
		}

		private void OnZoom25(object sender, System.EventArgs e)
		{
			Zoom = .25;
			this.AutoScrollMinSize = new Size ((int)(m_Bitmap.Width * Zoom), (int)(m_Bitmap.Height * Zoom));
			this.Invalidate();
		}

		private void OnZoom50(object sender, System.EventArgs e)
		{
			Zoom = .5;
			this.AutoScrollMinSize = new Size ((int)(m_Bitmap.Width * Zoom), (int)(m_Bitmap.Height * Zoom));
			this.Invalidate();
		}

		private void OnZoom100(object sender, System.EventArgs e)
		{
			Zoom = 1.0;
			this.AutoScrollMinSize = new Size ((int)(m_Bitmap.Width * Zoom), (int)(m_Bitmap.Height * Zoom));
			this.Invalidate();
		}

		private void OnZoom150(object sender, System.EventArgs e)
		{
			Zoom = 1.5;
			this.AutoScrollMinSize = new Size ((int)(m_Bitmap.Width * Zoom), (int)(m_Bitmap.Height * Zoom));
			this.Invalidate();
		}

		private void OnZoom200(object sender, System.EventArgs e)
		{
			Zoom = 2.0;
			this.AutoScrollMinSize = new Size ((int)(m_Bitmap.Width * Zoom), (int)(m_Bitmap.Height * Zoom));
			this.Invalidate();
		}

		private void OnZoom300(object sender, System.EventArgs e)
		{
			Zoom = 3.0;
			this.AutoScrollMinSize = new Size ((int)(m_Bitmap.Width * Zoom), (int)(m_Bitmap.Height * Zoom));
			this.Invalidate();
		}

		private void OnZoom500(object sender, System.EventArgs e)
		{
			Zoom = 5;
			this.AutoScrollMinSize = new Size ((int)(m_Bitmap.Width * Zoom), (int)(m_Bitmap.Height * Zoom));
			this.Invalidate();
		}

		private void OnFilterSmooth(object sender, System.EventArgs e)
		{
			m_Undo = (Bitmap)m_Bitmap.Clone();
			if(BitmapFilter.Smooth(m_Bitmap, 1))
				this.Invalidate();
		}

		private void OnGaussianBlur(object sender, System.EventArgs e)
		{
			m_Undo = (Bitmap)m_Bitmap.Clone();
			if(BitmapFilter.GaussianBlur(m_Bitmap, 4))
				this.Invalidate();
		}

		private void OnMeanRemoval(object sender, System.EventArgs e)
		{
			m_Undo = (Bitmap)m_Bitmap.Clone();
			if(BitmapFilter.MeanRemoval(m_Bitmap, 9))
				this.Invalidate();
		}

		private void OnSharpen(object sender, System.EventArgs e)
		{
			m_Undo = (Bitmap)m_Bitmap.Clone();
			if(BitmapFilter.Sharpen(m_Bitmap, 11))
				this.Invalidate();
		}

		private void OnEmbossLaplacian(object sender, System.EventArgs e)
		{
			m_Undo = (Bitmap)m_Bitmap.Clone();
			if(BitmapFilter.EmbossLaplacian(m_Bitmap))
				this.Invalidate();
		}

		private void OnEdgeDetectQuick(object sender, System.EventArgs e)
		{
			m_Undo = (Bitmap)m_Bitmap.Clone();
			if(BitmapFilter.EdgeDetectQuick(m_Bitmap))
				this.Invalidate();
		}

		private void OnUndo(object sender, System.EventArgs e)
		{
			Bitmap temp = (Bitmap)m_Bitmap.Clone();
			m_Bitmap = (Bitmap)m_Undo.Clone();
			m_Undo = (Bitmap)temp.Clone();
			this.Invalidate();
		}

		private void OnFilterCustom(object sender, System.EventArgs e)
		{
			Convolution dlg = new Convolution();

			if (DialogResult.OK == dlg.ShowDialog())
			{
				m_Undo = (Bitmap)m_Bitmap.Clone();
				if(BitmapFilter.Conv3x3(m_Bitmap, dlg.Matrix))
					this.Invalidate();
			}
		
		}

	}
}