又来一波 C# GDI 自定义控件 show 。这个控件已经使用几年了,最近找出来重构一下。原来是没有边框的,那么导致导航的功能不是很突出。本来想加个效果:在执行单击时显示 Loading 动画,在执行完单击事件后恢复原样。这就是网页里见到的局部刷新,Ajax 常用的场景。需求来自几年前一个智能储物柜项目,人机界面有个美工设计好的效果图,为了省事和通用,需要一个透明的按钮来实现导航的任务。就是控件只是设计时可见,运行时不可见。
1)、GraphicsPath 实现矩形的圆角羽化处理
- using (GraphicsPath path = new GraphicsPath())
- {
- #region 羽化,圆角处理
- path.StartFigure();
- path.AddArc(new Rectangle(new Point(rect.X, rect.Y), new Size(2 * Radius, 2 * Radius)), 180, 90);
- path.AddLine(new Point(rect.X + Radius, rect.Y), new Point(rect.Right - Radius, rect.Y));
- path.AddArc(new Rectangle(new Point(rect.Right - 2 * Radius, rect.Y), new Size(2 * Radius, 2 * Radius)), 270, 90);
- path.AddLine(new Point(rect.Right, rect.Y + Radius), new Point(rect.Right, rect.Bottom - Radius));
- path.AddArc(new Rectangle(new Point(rect.Right - 2 * Radius, rect.Bottom - 2 * Radius), new Size(2 * Radius, 2 * Radius)), 0, 90);
- path.AddLine(new Point(rect.Right - Radius, rect.Bottom), new Point(rect.X + Radius, rect.Bottom));
- path.AddArc(new Rectangle(new Point(rect.X, rect.Bottom - 2 * Radius), new Size(2 * Radius, 2 * Radius)), 90, 90);
- path.AddLine(new Point(rect.X, rect.Bottom - Radius), new Point(rect.X, rect.Y + Radius));
- path.CloseFigure();
- #endregion
要点就是画几段弧线和矩形连接起来。透明就是用了 Color.FromArgb 加上透明度,然后填充 GraphicsPath 形成透明区域。
- g.FillPath(new SolidBrush(Color.FromArgb(153, BackColor)), path);
2)、单窗体应用如何模块化
窗体只有一个,但操作界面好多个,由于是无人值守的应用。那么老是切换窗体操作是非常不方便的。工作区域是一个容器 Panel, 把每个操作界面定义成一个 Panel 作为只容器。
- public partial class DepositBizPanel : UserControl
- {
- private BackgroundStyle backgroundStyle = BackgroundStyle.Green;
- /// <summary>
- /// 主题风格
- /// </summary>
- public BackgroundStyle BackgroundStyle
- {
- get { return backgroundStyle; }
- set
- {
- backgroundStyle = value;
- switch (value)
- {
- case GreenlandExpressBox.BackgroundStyle.Blue:
- BackgroundImage = Properties.Resources.jbblue;
- break;
- case GreenlandExpressBox.BackgroundStyle.Orange:
- BackgroundImage = Properties.Resources.jborange;
- break;
- case GreenlandExpressBox.BackgroundStyle.Green:
- BackgroundImage = Properties.Resources.jbgreen;
- break;
- }
- Invalidate();
- }
- }
- public Panel ParentPanel
- {
- get;
- set;
- }
- public Bitmap QR_Barcode
- {
- get { return (Bitmap)pbxBarcode.Image; }
- set { pbxBarcode.Image = value; }
- }
- public DialogResult PanelDiagResult
- {
- get;
- set;
- }
- public DepositBizPanel(Panel parent, Bitmap barcode, BackgroundStyle style)
- {
- InitializeComponent();
- DoubleBuffered = true;
- ParentPanel = parent;
- QR_Barcode = barcode;
- BackgroundStyle = style;
- }
- private void btnback_Click(object sender, EventArgs e)
- {
- foreach (Control panel in ParentPanel.Controls)
- {
- if (panel is DepositBizPanel)
- {
- ParentPanel.Controls.Remove(panel);
- PanelDiagResult = DialogResult.Cancel;
- break;
- }
- }
- }
- private void btnprocessnext_Click(object sender, EventArgs e)
- {
- foreach (Control panel in ParentPanel.Controls)
- {
- if (panel is DepositBizPanel)
- {
- ParentPanel.Controls.Remove(panel);
- PanelDiagResult = DialogResult.OK;
- break;
- }
- }
- }
- }
3)、控件播放 gif 动画
- private void BeginAnimate()
- {
- if (m_AnimateImage == null)
- return;
- if (ImageAnimator.CanAnimate(m_AnimateImage))
- {
- //当gif动画每隔一定时间后,都会变换一帧,那么就会触发一事件,
- //该方法就是将当前image每变换一帧时,都会调用当前这个委托所关联的方法。
- ImageAnimator.Animate(m_AnimateImage, m_evthdlAnimator);
- }
- }
- private void StopAnimate()
- {
- if (m_AnimateImage == null)
- return;
- try
- {
- if (ImageAnimator.CanAnimate(m_AnimateImage))
- {
- ImageAnimator.StopAnimate(m_AnimateImage, m_evthdlAnimator);
- }
- }
- finally
- {
- m_IsExecuted = false;
- }
- }
- private void UpdateImage()
- {
- if (m_AnimateImage == null)
- return;
- if (ImageAnimator.CanAnimate(m_AnimateImage))
- {
- //获得当前gif动画的下一步需要渲染的帧,当下一步任何对当前gif动画的操作都是对该帧进行操作)
- ImageAnimator.UpdateFrames(m_AnimateImage);
- }
- }
- private void OnImageAnimate(Object sender, EventArgs e)
- {
- Invalidate();
- }
- protected override void OnLoad(EventArgs e)
- {
- base.OnLoad(e);
- string s1 = @"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";
- byte[] buffer = Convert.FromBase64String(s1);
- MemoryStream ms = new MemoryStream(buffer);
- var srcImg = Image.FromStream(ms);
- m_AnimateImage = srcImg;
- }
OnLoad 执行的操作是从 base64 字符串里反序列化图片,就是效果图中的 Loading 的 gif 图片。这里遇到一个问题:在关闭了 MemoryStream 之后,会出现 "gdi+ 中发生一般性错误",于是改为不关闭了,控件销毁之后占用的内存就会释放吧。这是一点隐忧,如果有好的办法,希望留言告知。
第一版自定义按钮:
- /// <summary>
- /// Cool透明自定义按钮
- /// </summary>
- public partial class CoolTransparentButton : UserControl
- {
- private Size iconSize = new Size(32, 32);
- public Size IconSize
- {
- get
- {
- return iconSize;
- }
- set
- {
- iconSize = value;
- Invalidate();
- }
- }
- private string _ButtonText;
- public string ButtonText
- {
- get { return _ButtonText; }
- set
- {
- _ButtonText = value;
- Invalidate();
- }
- }
- protected Image _IconImage;
- public Image IconImage
- {
- get
- {
- return _IconImage;
- }
- set
- {
- _IconImage = value;
- Invalidate();
- }
- }
- private bool _FocseActived = false;
- private Color _BorderColor = Color.White;
- public Color BorderColor
- {
- get
- {
- return _BorderColor;
- }
- set
- {
- _BorderColor = value;
- Invalidate();
- }
- }
- private int _Radius = 12;
- public int Radius
- {
- get
- {
- return _Radius;
- }
- set
- {
- _Radius = value;
- Invalidate();
- }
- }
- private bool ifDrawBorderWhenLostFocse = true;
- /// <summary>
- /// 失去焦点是否画边框
- /// </summary>
- public bool IfDrawBorderWhenLostFocse
- {
- get
- {
- return ifDrawBorderWhenLostFocse;
- }
- set
- {
- ifDrawBorderWhenLostFocse = value;
- Invalidate();
- }
- }
- /// <summary>
- /// 是否处于激活状态(焦点)
- /// </summary>
- public bool FocseActived
- {
- get { return _FocseActived; }
- set
- {
- _FocseActived = value;
- Invalidate();
- }
- }
- public CoolTransparentButton()
- {
- DoubleBuffered = true;
- BackColor = Color.Transparent;
- SetStyle(ControlStyles.AllPaintingInWmPaint | ControlStyles.OptimizedDoubleBuffer | ControlStyles.ResizeRedraw, true);
- SetStyle(ControlStyles.Opaque, false);
- UpdateStyles();
- }
- protected override void OnPaint(PaintEventArgs e)
- {
- var rect = ClientRectangle;
- rect.Inflate(-1, -1);
- Graphics g = e.Graphics;
- g.SmoothingMode = SmoothingMode.HighQuality;
- using (GraphicsPath path = new GraphicsPath())
- {
- #region 羽化,圆角处理
- path.StartFigure();
- path.AddArc(new Rectangle(new Point(rect.X, rect.Y), new Size(2 * Radius, 2 * Radius)), 180, 90);
- path.AddLine(new Point(rect.X + Radius, rect.Y), new Point(rect.Right - Radius, rect.Y));
- path.AddArc(new Rectangle(new Point(rect.Right - 2 * Radius, rect.Y), new Size(2 * Radius, 2 * Radius)), 270, 90);
- path.AddLine(new Point(rect.Right, rect.Y + Radius), new Point(rect.Right, rect.Bottom - Radius));
- path.AddArc(new Rectangle(new Point(rect.Right - 2 * Radius, rect.Bottom - 2 * Radius), new Size(2 * Radius, 2 * Radius)), 0, 90);
- path.AddLine(new Point(rect.Right - Radius, rect.Bottom), new Point(rect.X + Radius, rect.Bottom));
- path.AddArc(new Rectangle(new Point(rect.X, rect.Bottom - 2 * Radius), new Size(2 * Radius, 2 * Radius)), 90, 90);
- path.AddLine(new Point(rect.X, rect.Bottom - Radius), new Point(rect.X, rect.Y + Radius));
- path.CloseFigure();
- #endregion
- if (!FocseActived)
- {
- if (ifDrawBorderWhenLostFocse)
- g.DrawPath(new Pen(Color.Gray, 1), path);
- g.FillPath(new SolidBrush(Color.FromArgb(66, BackColor)), path);
- }
- else
- {
- g.DrawPath(new Pen(BorderColor, 1), path);
- rect.Inflate(-1, -1);
- g.FillPath(new SolidBrush(Color.FromArgb(153, BackColor)), path);
- }
- #region 画文本
- g.SmoothingMode = SmoothingMode.AntiAlias;
- if (IconImage != null)
- {
- Rectangle rc = new Rectangle((Width - 32) / 2, 16, IconSize.Width, IconSize.Height);
- g.DrawImage(IconImage, rc);
- }
- if (!string.IsNullOrEmpty(ButtonText))
- {
- using (StringFormat f = new StringFormat())
- {
- Rectangle rectTxt = new Rectangle(0, (Height - 18) / 2, Width, 36);
- f.Alignment = StringAlignment.Center;// 水平居中对齐
- f.LineAlignment = StringAlignment.Center; // 垂直居中对齐
- f.FormatFlags = StringFormatFlags.NoWrap;// 设置为单行文本
- SolidBrush fb = new SolidBrush(this.ForeColor); // 绘制文本
- e.Graphics.DrawString(ButtonText, new Font("微软雅黑", 16F, FontStyle.Bold), fb, rectTxt, f);
- }
- }
- #endregion
- }
- }
- protected override void OnMouseHover(EventArgs e)
- {
- FocseActived = true;
- }
- protected override void OnMouseLeave(EventArgs e)
- {
- FocseActived = false;
- }
- protected override void OnEnter(EventArgs e)
- {
- FocseActived = true;
- }
- protected override void OnLeave(EventArgs e)
- {
- FocseActived = false;
- }
- }
第二版自定义按钮:
- /// <summary>
- /// 自定义透明自定义按钮,模仿实现了网页元素的Ajax效果
- /// </summary>
- public partial class AjaxTransparentButton : UserControl
- {
- private Size iconSize = new Size(32, 32);
- public Size IconSize
- {
- get
- {
- return iconSize;
- }
- set
- {
- iconSize = value;
- Invalidate();
- }
- }
- private string _ButtonText;
- public string ButtonText
- {
- get { return _ButtonText; }
- set
- {
- _ButtonText = value;
- Invalidate();
- }
- }
- protected Image _IconImage;
- public Image IconImage
- {
- get
- {
- return _IconImage;
- }
- set
- {
- _IconImage = value;
- Invalidate();
- }
- }
- private bool _FocseActived = false;
- private Color _BorderColor = Color.White;
- public Color BorderColor
- {
- get
- {
- return _BorderColor;
- }
- set
- {
- _BorderColor = value;
- Invalidate();
- }
- }
- private int _Radius = 12;
- public int Radius
- {
- get
- {
- return _Radius;
- }
- set
- {
- _Radius = value;
- Invalidate();
- }
- }
- private bool ifDrawBorderWhenLostFocse = true;
- /// <summary>
- /// 失去焦点是否画边框
- /// </summary>
- public bool IfDrawBorderWhenLostFocse
- {
- get
- {
- return ifDrawBorderWhenLostFocse;
- }
- set
- {
- ifDrawBorderWhenLostFocse = value;
- Invalidate();
- }
- }
- /// <summary>
- /// 是否处于激活状态(焦点)
- /// </summary>
- public bool FocseActived
- {
- get { return _FocseActived; }
- set
- {
- _FocseActived = value;
- Invalidate();
- }
- }
- private Image m_AnimateImage = null;
- private EventHandler m_evthdlAnimator = null;
- private bool m_IsExecuted = false;
- public AjaxTransparentButton()
- {
- BackColor = Color.Transparent;
- SetStyle(ControlStyles.AllPaintingInWmPaint | ControlStyles.OptimizedDoubleBuffer | ControlStyles.ResizeRedraw | ControlStyles.UserPaint, true);
- SetStyle(ControlStyles.Opaque, false);
- UpdateStyles();
- m_evthdlAnimator = new EventHandler(OnImageAnimate);
- }
- protected override void OnPaint(PaintEventArgs e)
- {
- var rect = ClientRectangle;
- rect.Inflate(-1, -1);
- Graphics g = e.Graphics;
- g.SmoothingMode = SmoothingMode.HighQuality;
- using (GraphicsPath path = new GraphicsPath())
- {
- #region 羽化,圆角处理
- path.StartFigure();
- path.AddArc(new Rectangle(new Point(rect.X, rect.Y), new Size(2 * Radius, 2 * Radius)), 180, 90);
- path.AddLine(new Point(rect.X + Radius, rect.Y), new Point(rect.Right - Radius, rect.Y));
- path.AddArc(new Rectangle(new Point(rect.Right - 2 * Radius, rect.Y), new Size(2 * Radius, 2 * Radius)), 270, 90);
- path.AddLine(new Point(rect.Right, rect.Y + Radius), new Point(rect.Right, rect.Bottom - Radius));
- path.AddArc(new Rectangle(new Point(rect.Right - 2 * Radius, rect.Bottom - 2 * Radius), new Size(2 * Radius, 2 * Radius)), 0, 90);
- path.AddLine(new Point(rect.Right - Radius, rect.Bottom), new Point(rect.X + Radius, rect.Bottom));
- path.AddArc(new Rectangle(new Point(rect.X, rect.Bottom - 2 * Radius), new Size(2 * Radius, 2 * Radius)), 90, 90);
- path.AddLine(new Point(rect.X, rect.Bottom - Radius), new Point(rect.X, rect.Y + Radius));
- path.CloseFigure();
- #endregion
- if (!FocseActived)
- {
- if (ifDrawBorderWhenLostFocse)
- g.DrawPath(new Pen(Color.Gray, 1), path);
- g.FillPath(new SolidBrush(Color.FromArgb(66, BackColor)), path);
- }
- else
- {
- g.DrawPath(new Pen(BorderColor, 1), path);
- rect.Inflate(-1, -1);
- g.FillPath(new SolidBrush(Color.FromArgb(153, BackColor)), path);
- }
- #region 画文本
- g.SmoothingMode = SmoothingMode.AntiAlias;
- if (IconImage != null)
- {
- Rectangle rc = new Rectangle((Width - 32) / 2, 16, IconSize.Width, IconSize.Height);
- g.DrawImage(IconImage, rc);
- }
- if (!string.IsNullOrEmpty(ButtonText))
- {
- using (StringFormat f = new StringFormat())
- {
- Rectangle rectTxt = new Rectangle(0, (Height - 18) / 2, Width, 36);
- f.Alignment = StringAlignment.Center;// 水平居中对齐
- f.LineAlignment = StringAlignment.Center; // 垂直居中对齐
- f.FormatFlags = StringFormatFlags.NoWrap;// 设置为单行文本
- SolidBrush fb = new SolidBrush(this.ForeColor); // 绘制文本
- e.Graphics.DrawString(ButtonText, new Font("微软雅黑", 16F, FontStyle.Bold), fb, rectTxt, f);
- }
- }
- if (m_AnimateImage != null)
- {
- Rectangle rectGif = new Rectangle((Width - 24) / 2, (Height - 16) / 2 - 8, 32, 32);
- if (m_IsExecuted)
- {
- UpdateImage();
- e.Graphics.DrawImage(m_AnimateImage, rectGif);
- }
- else
- {
- e.Graphics.FillRectangle(new SolidBrush(Color.Transparent), rectGif);
- }
- }
- #endregion
- }
- }
- protected override void OnMouseHover(EventArgs e)
- {
- FocseActived = true;
- }
- protected override void OnMouseLeave(EventArgs e)
- {
- FocseActived = false;
- }
- protected override void OnEnter(EventArgs e)
- {
- FocseActived = true;
- }
- protected override void OnLeave(EventArgs e)
- {
- FocseActived = false;
- }
- private void BeginAnimate()
- {
- if (m_AnimateImage == null)
- return;
- if (ImageAnimator.CanAnimate(m_AnimateImage))
- {
- //当gif动画每隔一定时间后,都会变换一帧,那么就会触发一事件,
- //该方法就是将当前image每变换一帧时,都会调用当前这个委托所关联的方法。
- ImageAnimator.Animate(m_AnimateImage, m_evthdlAnimator);
- }
- }
- private void StopAnimate()
- {
- if (m_AnimateImage == null)
- return;
- try
- {
- if (ImageAnimator.CanAnimate(m_AnimateImage))
- {
- ImageAnimator.StopAnimate(m_AnimateImage, m_evthdlAnimator);
- }
- }
- finally
- {
- m_IsExecuted = false;
- }
- }
- private void UpdateImage()
- {
- if (m_AnimateImage == null)
- return;
- if (ImageAnimator.CanAnimate(m_AnimateImage))
- {
- //获得当前gif动画的下一步需要渲染的帧,当下一步任何对当前gif动画的操作都是对该帧进行操作)
- ImageAnimator.UpdateFrames(m_AnimateImage);
- }
- }
- private void OnImageAnimate(Object sender, EventArgs e)
- {
- Invalidate();
- }
- protected override void OnLoad(EventArgs e)
- {
- base.OnLoad(e);
- string s1 = @"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";
- byte[] buffer = Convert.FromBase64String(s1);
- MemoryStream ms = new MemoryStream(buffer);
- var srcImg = Image.FromStream(ms);
- m_AnimateImage = srcImg;
- }
- protected override void OnClick(EventArgs e)
- {
- if (m_IsExecuted)
- return;
- Action clickTask = () =>
- {
- m_IsExecuted = true;
- BeginAnimate();
- base.OnClick(e);
- Invalidate();
- };
- //异步执行单击事件
- clickTask.BeginInvoke((result) =>
- {
- clickTask.EndInvoke(result);
- m_IsExecuted = false;
- StopAnimate();
- }, null);
- }
- protected override void Dispose(bool disposing)
- {
- base.Dispose(disposing);
- if (m_AnimateImage != null)
- {
- try
- {
- StopAnimate();
- }
- finally
- {
- m_AnimateImage.Dispose();
- m_evthdlAnimator = null;
- }
- }
- }
- protected override void OnKeyDown(KeyEventArgs e)
- {
- base.OnKeyDown(e);
- if (e.KeyCode == Keys.Enter)
- {
- OnClick(e);
- }
- }
- }
注释不是很多,源码如有需要拿走不谢. 近来访问本博的外国友人多起来了,所以在 Code Project 上发布了 E 文版的本篇博客,目前短短两个月包含我大中华帝国在内已经有 29 个国家地区访问本博客,这是写作的动力。
来源: http://www.cnblogs.com/datacool/p/datacool_2017_ajax_button.html