formj.cs

这是用C#编的一个简单的电子日记本软件

					dc.DrawLine (Pens.White, this.MdiContainer.Size.Width -34,5,
						this.MdiContainer.Size.Width -34,18);
					dc.DrawLine (Pens.White, this.MdiContainer.Size.Width -34,18,
						this.MdiContainer.Size.Width -46,18);
					break ;
				case WndMouseState.LButtonDownRightBtn :
					if ((GetTabsState() & TabsState.OutLeft) == 0) break ;
					dc.DrawLine (Pens.Black, this.MdiContainer.Size.Width -32,5,
						this.MdiContainer.Size.Width -20,5);
					dc.DrawLine (Pens.Black, this.MdiContainer.Size.Width -32,16,
						this.MdiContainer.Size.Width -32,5);
					dc.DrawLine (Pens.White, this.MdiContainer.Size.Width -20,5,
						this.MdiContainer.Size.Width -20,18);
					dc.DrawLine (Pens.White, this.MdiContainer.Size.Width -20,18,
						this.MdiContainer.Size.Width -32,18);
					break ;
				case WndMouseState.LButtonDownX :
					dc.DrawLine (Pens.Black, this.MdiContainer.Size.Width -18,5,
						this.MdiContainer.Size.Width -5,5);
					dc.DrawLine (Pens.Black, this.MdiContainer.Size.Width -18,16,
						this.MdiContainer.Size.Width -18,5);
					dc.DrawLine (Pens.White, this.MdiContainer.Size.Width -5,5,
						this.MdiContainer.Size.Width -5,18);
					dc.DrawLine (Pens.White, this.MdiContainer.Size.Width -5,18,
						this.MdiContainer.Size.Width -18,18);
					break ;
			}
			// 画图当 "<" ">" 按钮生效时 的效果
			// Point
			Point[] pointLs = 
			{
				new Point (MdiContainer.Size.Width -42, 12) ,
				new Point (MdiContainer.Size.Width -37, 7) ,
				new Point (MdiContainer.Size.Width -37, 16) ,
			} ;

			Point[] pointRs =
			{
				new Point (MdiContainer.Size.Width -23, 12) ,
				new Point (MdiContainer.Size.Width -28, 7) ,
				new Point (MdiContainer.Size.Width -28, 16) ,

			} ;
			// 画实心 ">"
			if ((GetTabsState() & TabsState.OutRight) !=0)
				dc.FillPolygon (this.TabBrush, pointLs) ;
			// 画实心 "<"
			if ((GetTabsState() & TabsState.OutLeft) !=0)
				dc.FillPolygon (this.TabBrush, pointRs) ;

		}

		private void MdiContainer_SizeChanged(object sender, System.EventArgs e)
		{
			this.TextEditPane.Size = new Size (this.MdiContainer.Size.Width -22, 
				this.MdiContainer.Size.Height -30) ;
			this.MdiTabOwner.Size = new Size (this.MdiContainer.Size.Width -76,22) ;
			this.MdiContainer.Invalidate () ;
		}

		private void MdiContainer_MouseDown(object sender, System.Windows.Forms.MouseEventArgs e)
		{
			// 状态机模型 实现按钮效果
			if (e.Button == MouseButtons.Left)
			{ 
				if (this.MdiContainerMouseState == WndMouseState.MouseOnX) 
				{
					this.MdiContainerMouseState = WndMouseState.LButtonDownX ;
				}
				else if (this.MdiContainerMouseState == WndMouseState.MouseOnLeftBtn) 
				{
					this.MdiContainerMouseState = WndMouseState.LButtonDownLeftBtn ;
					if ((GetTabsState() & TabsState.OutRight) != 0)
					{
						this.ehTimeTab_Tick = this.ehTimeTab_Tick_L ;
						this.TimeTab.Tick += this.ehTimeTab_Tick ;
						this.TimeTab.Enabled = true ;
					}
				}
				else if (this.MdiContainerMouseState == WndMouseState.MouseOnRightBtn) 
				{
					this.MdiContainerMouseState = WndMouseState.LButtonDownRightBtn ;
					if ((GetTabsState() & TabsState.OutLeft) != 0)
					{
						this.ehTimeTab_Tick = this.ehTimeTab_Tick_R ;
						this.TimeTab.Tick += this.ehTimeTab_Tick ;
						this.TimeTab.Enabled = true ;
					
					}
				}
				this.MdiContainer.Invalidate (
					new Rectangle (this.MdiContainer.Size.Width - 50,0,50,20)) ;						
				this.Update () ;
			}
		}

		private void MdiContainer_MouseMove(object sender, System.Windows.Forms.MouseEventArgs e)
		{
			// 一个状态机模型 实现按钮效果
			if (e.Button == MouseButtons.Left)
			{
				switch (MouseIsOnLeftOrRightOrX (e.X, e.Y))
				{
					case WndMouseState.None :
						if (this.MdiContainerMouseState != WndMouseState.None)
						{
							this.MdiContainerMouseState = WndMouseState.None ;
							this.MdiContainer.Invalidate (
								new Rectangle (this.MdiContainer.Size.Width - 50,0,50,20)) ;
						}
						break ;
					case WndMouseState.MouseOnLeftBtn :
						if (this.MdiContainerMouseState != WndMouseState.LButtonDownLeftBtn)
						{
							this.MdiContainerMouseState = WndMouseState.LButtonDownLeftBtn ;
							this.MdiContainer.Invalidate (
								new Rectangle (this.MdiContainer.Size.Width - 50,0,50,20)) ;						
						}
						break ;
					case WndMouseState.MouseOnRightBtn :
						if (this.MdiContainerMouseState != WndMouseState.LButtonDownRightBtn)
						{
							this.MdiContainerMouseState = WndMouseState.LButtonDownRightBtn ;
							this.MdiContainer.Invalidate (
								new Rectangle (this.MdiContainer.Size.Width - 50,0,50,20)) ;						
						}
						break ;
					case WndMouseState.MouseOnX :
						if (this.MdiContainerMouseState!= WndMouseState.LButtonDownX)
						{
							this.MdiContainerMouseState = WndMouseState.LButtonDownX ;
							this.MdiContainer.Invalidate (
								new Rectangle (this.MdiContainer.Size.Width - 50,0,50,20)) ;						
						}
						break ;
				}
			}
			else if (e.Button == MouseButtons.None)
			{
				switch (MouseIsOnLeftOrRightOrX (e.X, e.Y))
				{
					case WndMouseState.None :
						if (this.MdiContainerMouseState != WndMouseState.None)
						{
							this.MdiContainerMouseState = WndMouseState.None ;
							this.MdiContainer.Invalidate (
								new Rectangle (this.MdiContainer.Size.Width - 50,0,50,20)) ;						
						}
						break ;
					case WndMouseState.MouseOnLeftBtn :
						if (this.MdiContainerMouseState != WndMouseState.MouseOnLeftBtn)
						{
							this.MdiContainerMouseState = WndMouseState.MouseOnLeftBtn ;
							this.MdiContainer.Invalidate (
								new Rectangle (this.MdiContainer.Size.Width - 50,0,50,20)) ;						
						}
						break ;
					case WndMouseState.MouseOnRightBtn :
						if (this.MdiContainerMouseState != WndMouseState.MouseOnRightBtn)
						{
							this.MdiContainerMouseState = WndMouseState.MouseOnRightBtn ;
							this.MdiContainer.Invalidate (
								new Rectangle (this.MdiContainer.Size.Width - 50,0,50,20)) ;						
						}
						break ;
					case WndMouseState.MouseOnX :
						if (this.MdiContainerMouseState!= WndMouseState.MouseOnX)
						{
							this.MdiContainerMouseState = WndMouseState.MouseOnX ;
							this.MdiContainer.Invalidate (
								new Rectangle (this.MdiContainer.Size.Width - 50,0,50,20)) ;						
						}
						break ;
				}
			}
		}

		private void MdiContainer_MouseUp(object sender, System.Windows.Forms.MouseEventArgs e)
		{
			switch (MdiContainerMouseState)
			{
					// 单击 X 
					// 关闭当前文档
				case WndMouseState.LButtonDownX :
					TabsMenuClose_Click(sender, e) ;
					break ;
				case WndMouseState.LButtonDownLeftBtn :
				case WndMouseState.LButtonDownRightBtn :
					this.TimeTab.Enabled = false ;
					this.TimeTab.Tick -= this.ehTimeTab_Tick ; 
					break ;
			}
			this.MdiContainerMouseState = WndMouseState.None ;
			this.MdiContainer.Invalidate (
				new Rectangle (this.MdiContainer.Size.Width - 50,0,50,20)) ;
			this.TextEditPane.Focus () ;
		}


		private void MdiTabs_MouseDown(object sender, System.Windows.Forms.MouseEventArgs e)
		{
			Graphics dc = this.CreateGraphics();
			int nTabX = 10 ;
			string[] arrTitles = MdiDocManager.GetTabsTitle () ;
			for (int i = 0 ; i < arrTitles.Length ; i++)
			{
				// 叠加标题文本的长度 为了搜索被单击的TAB 
				if (i == MdiDocManager.CurTab)
					nTabX += (int)(dc.MeasureString (arrTitles[i], CurTabFont).Width) + 10 ;
				else 
					nTabX += (int)(dc.MeasureString (arrTitles[i], TabFont).Width) + 10 ;
				// 与 e.X 比较 找到了被单击 的TAB 了
				if (nTabX > e.X )
				{
					// 如果 被单击的TAB 就是当前 TAB 
					// 则什么也不做
					if (i == MdiDocManager.CurTab) 
						break ;
					// 否则 
					// 中文本变化将其保存到 MdiDocManager 中
					this.MdiDocManager.TextTakeIn (this.TextEditPane.Lines) ;
					// 被单击的TAB 设置为 当前TAB 并重画TABS 窗口
					MdiDocManager.CurTab = i ;
					this.MdiTabs.Invalidate () ;
					// 设置 TabChange 标志 在MouseUp时更新 TextBox 的内容
					TabChange = true ;	
					break ;
				}
			}
			dc.Dispose () ;

			if (e.Button == MouseButtons.Right)
			{
				// 在出现菜单前 调用 MouseUp 更新 TextBox 的内容
				MdiTabs_MouseUp(sender, e) ;	
				// 为了不要更新 2 次设置标志 为假
				TabChange = false ;
			}
		}

		private void MdiTabs_MouseUp(object sender, System.Windows.Forms.MouseEventArgs e)
		{
			if (this.TabChange)
			{
				this.TextPaneShowNewText () ;
				TabChange = false ;
			}
		}

		private void MdiTabs_SizeChanged(object sender, System.EventArgs e)
		{
			if (this.MdiTabs.Size.Width - MdiTabs.Location.X > this.MdiTabOwner.Size.Width)
			{
				this.MdiTabs.Location = new Point (this.MdiTabOwner.Size.Width
					- MdiTabs.Size.Width , 0) ;
				this.MdiContainer.Invalidate (
					new Rectangle (this.MdiContainer.Size.Width - 50,0,50,20)) ;
			}
		}

		private void MdiTabs_Paint(object sender, System.Windows.Forms.PaintEventArgs e)
		{
			Graphics dc = e.Graphics ; 
			int nTabLen = 10 ;
			string[] arrTitles = null ;
			
			if (MdiDocManager.IsEmpty () ) return ;

			// Draw a white line on botton 
			dc.DrawLine (Pens.White, 0, MdiTabs.Size.Height -1, MdiTabs.Size.Width, MdiTabs.Size.Height -1) ;

			// Draw Tabs's text.
			arrTitles = MdiDocManager.GetTabsTitle () ;
			int i ; // for loop.
			for (i = 0 ; i < MdiDocManager.CurTab ; i ++)
			{
				dc.DrawString (arrTitles[i], TabFont, TabBrush, nTabLen, 7) ; 
				nTabLen += (int)(dc.MeasureString (arrTitles[i], TabFont).Width) + 10 ;
				dc.DrawLine (this.FramePen, nTabLen-5, 6, nTabLen-5, 20) ;
			}
			// Draw CurTab's Text
			// Tab effect
			Rectangle rect = new Rectangle (nTabLen-5, 4, 
				(int)(dc.MeasureString (arrTitles[i], CurTabFont).Width) + 10, 18) ;
			dc.FillRectangle (this.CurTabBrush, rect) ; 
			dc.DrawLine (Pens.Black, rect.X + rect.Width - 1 , rect.Y ,
				rect.X + rect.Width - 1, rect.Y + rect.Height - 1) ;
			dc.DrawLine (Pens.White, rect.X, rect.Y, rect.X , rect.Y + rect.Height - 1) ;
			dc.DrawLine (Pens.White, rect.X, rect.Y, rect.X + rect.Width - 1 , rect.Y ) ;
			// 
			dc.DrawString (arrTitles[i], CurTabFont, Brushes.Black, nTabLen, 7) ; 
			nTabLen += rect.Width ;
			i ++ ;
			// Draw other Tab.
			for (; i < arrTitles.Length ; i ++)
			{
				dc.DrawString (arrTitles[i], TabFont, TabBrush, nTabLen, 7) ; 
				nTabLen += (int)(dc.MeasureString (arrTitles[i], TabFont).Width) + 10 ;
				dc.DrawLine (this.FramePen, nTabLen-5, 6, nTabLen-5, 20) ;

			}
			// Reset pane's size.
			this.MdiTabs.Size = new Size (nTabLen, MdiTabs.Size.Height) ;
		}


		private void MdiTabOwner_Paint(object sender, System.Windows.Forms.PaintEventArgs e)
		{
			Graphics dc = e.Graphics ;
			dc.DrawLine (Pens.White, 0, MdiTabOwner.Size.Height-1 , MdiTabOwner.Size.Width, MdiTabOwner.Size.Height-1 ) ;
		}

		private void MdiTabOwner_SizeChanged(object sender, System.EventArgs e)
		{
			if (MdiTabs.Location.X != 0) 
			{
				if (MdiTabs.Size.Width + MdiTabs.Location.X < MdiTabOwner.Size.Width) 
				{
					MdiTabs.Location = new Point (MdiTabOwner.Size.Width - MdiTabs.Size.Width, 0) ;
					if (MdiTabs.Location.X > 0)
					{
						MdiTabs.Location = new Point (0, 0) ;
					}
				}

			}
		}


		private void TextEditPane_KeyDown(object sender, System.Windows.Forms.KeyEventArgs e)
		{
			
		}

		private void TextEditPane_Enter(object sender, System.EventArgs e)
		{
			GenericPane_Leave (sender, e) ;	
		}

		private void TextEditPane_TextChanged(object sender, System.EventArgs e)
		{
			if (this.MdiDocManager.SetCurTabChangedFlag ())
			{
				this.MdiTabs.Invalidate () ;
			}
		}


		private void DocTree_DoubleClick(object sender, System.EventArgs e)
		{
			// 如果有新文件要打开...
			if (((FileTreeNode)this.DocTree.SelectedNode).NoteStyle == TreeNodeStyle.File)
			{
				this.OpenFileFromDocTree () ;
			}
		}

		private void DocTree_MouseUp(object sender, System.Windows.Forms.MouseEventArgs e)
		{
			if (DocTree.GetNodeAt(e.X, e.Y) != null)
			{
				this.DocTree.SelectedNode = DocTree.GetNodeAt(e.X, e.Y) ;