场景

Winforn中实现ZedGraph自定义添加右键菜单项(附源码下载):

https://blog.csdn.net/BADAO_LIUMANG_QIZHI/article/details/100140716

Winform中实现ZedGraph中曲线右键显示为中文:

https://blog.csdn.net/BADAO_LIUMANG_QIZHI/article/details/100115292

在上面两篇文章的基础上,已经实现的ZedGraph的右键效果

 

 

现在需要根据当前图形的Y轴的选项自动追加右键菜单,打开设置Y轴上下限的输入面板,进而设置Y轴的上下限。

比如当曲线图有两个Y轴,那么在右键时就会显示两个设置上下限的菜单。

 

 

点击相应的右键菜单时弹出设置上下限的窗口

 

 

将上限设置为150之后

 

 

注:

博客主页:
https://blog.csdn.net/badao_liumang_qizhi
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实现

在初始化ZedGraph的图形方法中绑定其右键菜单事件

zgc.ContextMenuBuilder -= zgc_ContextMenuBuilder;     //上下文菜单生成事件订阅
zgc.ContextMenuBuilder += zgc_ContextMenuBuilder;     //上下文菜单生成事件订阅

 

然后在右键菜单事件中

private static void zgc_ContextMenuBuilder(ZedGraphControl control, ContextMenuStrip menuStrip, Point mousePt, ZedGraphControl.ContextMenuObjectState

objState)
        {
            #region 扩展上下文菜单

            #region 设置上下限菜单

            ToolStripMenuItem mnuYAxisUpLower = null;
            for (int i = 0; i < control.GraphPane.YAxisList.Count; i++)
            {
                YAxis yAxis = control.GraphPane.YAxisList[i];
                mnuYAxisUpLower = new ToolStripMenuItem();
                mnuYAxisUpLower.Name = "mnuYAxisUpLower" + i;
                mnuYAxisUpLower.Text = String.Format("设置[{0}]上下限", yAxis.Title.Text);
                mnuYAxisUpLower.Click += delegate(object sender, EventArgs e)
                {
                    Dialog.FrmSetScaleMaxMin frmSetScaleMaxMin = new FrmSetScaleMaxMin(mnuYAxisUpLower.Text, yAxis.Scale.Max, yAxis.Scale.Min);
                    DialogResult result = frmSetScaleMaxMin.ShowDialog();
                    if (result == DialogResult.OK)
                    {
                        yAxis.Scale.Max = frmSetScaleMaxMin.Max;
                        yAxis.Scale.Min = frmSetScaleMaxMin.Min;
                        //更改上下限后刷新曲线图
                        control.AxisChange();
                        control.Refresh();
                        control.Invalidate();
                    }
                };
                menuStrip.Items.Add(mnuYAxisUpLower);
            }
            #endregion

            #endregion

            #region 汉化上下文菜单中的菜单项

            foreach (ToolStripMenuItem item in menuStrip.Items)
            {
                switch (item.Name)
                {
                    case "copied_to_clip":
                        item.Text = @"复制到剪贴板";
                        break;
                    case "copy":
                        item.Text = @"复制";
                        item.Click += item_Click;
                        break;
                    case "page_setup":
                        item.Text = @"页面设置...";
                        break;
                    case "print":
                        item.Text = @"打印...";
                        break;
                    case "save_as":
                        item.Text = @"另存图表...";
                        break;
                    case "set_default":
                        item.Text = @"恢复默认大小";
                        break;
                    case "show_val":
                        item.Text = @"显示节点数值";
                        break;
                    case "title_def":
                        item.Text = @"标题";
                        break;
                    case "undo_all":
                        item.Text = @"还原所有缩放";
                        break;
                    case "unpan":
                        item.Text = @"还原上一步缩放";
                        break;
                    case "unzoom":
                        item.Text = @"还原缩放";
                        break;
                   
                }
            }

            #endregion
        }

 

上面代码包含了汉化右键菜单的代码,主要的是上面扩展右键菜单的代码部分

 

ToolStripMenuItem mnuYAxisUpLower = null;
            for (int i = 0; i < control.GraphPane.YAxisList.Count; i++)
            {
                YAxis yAxis = control.GraphPane.YAxisList[i];
                mnuYAxisUpLower = new ToolStripMenuItem();
                mnuYAxisUpLower.Name = "mnuYAxisUpLower" + i;
                mnuYAxisUpLower.Text = String.Format("设置[{0}]上下限", yAxis.Title.Text);
                mnuYAxisUpLower.Click += delegate(object sender, EventArgs e)
                {
                    Dialog.FrmSetScaleMaxMin frmSetScaleMaxMin = new FrmSetScaleMaxMin(mnuYAxisUpLower.Text, yAxis.Scale.Max, yAxis.Scale.Min);
                    DialogResult result = frmSetScaleMaxMin.ShowDialog();
                    if (result == DialogResult.OK)
                    {
                        yAxis.Scale.Max = frmSetScaleMaxMin.Max;
                        yAxis.Scale.Min = frmSetScaleMaxMin.Min;
                        //更改上下限后刷新曲线图
                        control.AxisChange();
                        control.Refresh();
                        control.Invalidate();
                    }
                };
                menuStrip.Items.Add(mnuYAxisUpLower);
            }

 

注:

首先循环所有的Y轴,并通过YAxis yAxis = control.GraphPane.YAxisList[i]获取Y轴对象。然后设置菜单选项的名称、文本和点击事件。

在点击事件中弹出设置上下限窗口

窗口布局设置如下

 

 

然后修改窗体代码为

public partial class FrmSetScaleMaxMin : DevExpress.XtraEditors.XtraForm
    {
        #region 字段定义

        private string _title = String.Empty;       //保存要设置的坐标标题
        private double _orignalMax = 0.0;           //保存原坐标上限
        private double _orignalMin = 0.0;           //保存原坐标下限

        #endregion

        #region 构造方法

        public FrmSetScaleMaxMin(string title, double orignalMax, double orignalMin)
        {
            this._title = title;
            this._orignalMax = orignalMax;
            this._orignalMin = orignalMin;
            InitializeComponent();
        }

        #endregion

        #region 属性定义

        /// <summary>
        /// 设置后的坐标上限
        /// </summary>
        public double Max
        {
            get 
            {
                double value = 0.0;
                double.TryParse(this.txtMax.EditValue.ToString(), out value);
                return value;
            }
        }

        /// <summary>
        /// 设置后的坐标下限
        /// </summary>
        public double Min
        {
            get 
            {
                double value = 0.0;
                double.TryParse(this.txtMin.EditValue.ToString(), out value);
                return value;
            }
        }

        #endregion

        #region 事件处理

        /// <summary>
        /// 窗体加载
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void FrmSetScaleMaxMin_Load(object sender, EventArgs e)
        {
            this.Text = this._title;
            this.txtMax.EditValue = this._orignalMax;
            this.txtMin.EditValue = this._orignalMin;
        }

        /// <summary>
        /// 确定
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void btnOK_Click(object sender, EventArgs e)
        {

            this.DialogResult = System.Windows.Forms.DialogResult.OK;
        }

        /// <summary>
        /// 取消
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void btnCancel_Click(object sender, EventArgs e)
        {
            this.DialogResult = System.Windows.Forms.DialogResult.Cancel;
        }

        #endregion

    }

 

点击确定后返回结果并设置Y轴刻度的最大和最小值,然后刷新曲线图。

最后将此右键菜单项添加到右键中去。

posted on 2019-11-15 10:18  霸道流氓  阅读(809)  评论(0编辑  收藏  举报

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