■ Points 클래스의 XValues/YValues/FirstVisibleIndex/LastVisibleIndex 속성을 사용해 현재 페이지의 최소/최대값을 찾는 방법을 보여준다.
▶ MainForm.cs
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using System; using System.Drawing; using System.Windows.Forms; using Steema.TeeChart.Drawing; using Steema.TeeChart.Styles; using Steema.TeeChart.Tools; namespace TestProject { /// <summary> /// 메인 폼 /// </summary> public partial class MainForm : Form { //////////////////////////////////////////////////////////////////////////////////////////////////// Field ////////////////////////////////////////////////////////////////////////////////////////// Private #region Field /// <summary> /// 페이지 번호 /// </summary> private PageNumber pageNumber; /// <summary> /// 포인트 시리즈 /// </summary> private Points points; #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Constructor ////////////////////////////////////////////////////////////////////////////////////////// Public #region 생성자 - MainForm() /// <summary> /// 생성자 /// </summary> public MainForm() { InitializeComponent(); Text = "Points 클래스 : XValues/YValues/FirstVisibleIndex/LastVisibleIndex 속성을 사용해 현재 페이지의 최소/최대값 찾기"; this.adjustVerticalAxisCheckBox.Checked = true; this.tChart.Panel.Pen = new ChartPen(Color.Black); this.tChart.Page.MaxPointsPerPage = 25; this.pageNumber = new PageNumber(this.tChart.Chart); this.points = new Points(this.tChart.Chart); this.points.FillSampleValues(100); this.adjustVerticalAxisCheckBox.CheckedChanged += adjustVerticalAxisCheckBox_CheckedChanged; this.previousButton.Click += previousButton_Click; this.nextButton.Click += nextButton_Click; AdjustAxisScale(this.points, 0, 24, true); } #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Method ////////////////////////////////////////////////////////////////////////////////////////// Private //////////////////////////////////////////////////////////////////////////////// Event #region 수직 축 조정 체크 박스 체크 변경시 처리하기 - adjustVerticalAxisCheckBox_CheckedChanged(sender, e) /// <summary> /// 수직 축 조정 체크 박스 체크 변경시 처리하기 /// </summary> /// <param name="sender">이벤트 발생자</param> /// <param name="e">이벤트 인자</param> private void adjustVerticalAxisCheckBox_CheckedChanged(object sender, EventArgs e) { if(this.adjustVerticalAxisCheckBox.Checked) { AdjustAxisScale(this.points, this.points.FirstVisibleIndex, this.points.LastVisibleIndex, true); } else { this.points.GetVertAxis.Automatic = true; } this.points.Repaint(); } #endregion #region 이전 버튼 클릭시 처리하기 - previousButton_Click(sender, e) /// <summary> /// 이전 버튼 클릭시 처리하기 /// </summary> /// <param name="sender">이벤트 발생자</param> /// <param name="e">이벤트 인자</param> private void previousButton_Click(object sender, EventArgs e) { this.tChart.Page.Previous(); if(this.adjustVerticalAxisCheckBox.Checked) { AdjustAxisScale(this.points, this.points.FirstVisibleIndex, this.points.LastVisibleIndex, true); } else { this.points.GetVertAxis.Automatic = true; } } #endregion #region 다음 버튼 클릭시 처리하기 - nextButton_Click(sender, e) /// <summary> /// 다음 버튼 클릭시 처리하기 /// </summary> /// <param name="sender">이벤트 발생자</param> /// <param name="e">이벤트 인자</param> private void nextButton_Click(object sender, EventArgs e) { this.tChart.Page.Next(); if(this.adjustVerticalAxisCheckBox.Checked) { AdjustAxisScale(this.points, this.points.FirstVisibleIndex, this.points.LastVisibleIndex, true); } else { this.points.GetVertAxis.Automatic = true; } } #endregion //////////////////////////////////////////////////////////////////////////////// Function #region 최소/최대값 찾기 - FindMinimumMaximum(valueList, firstIndex, lastIndex, minimum, maximum) /// <summary> /// 최소/최대값 찾기 /// </summary> /// <param name="valueList">값 리스트</param> /// <param name="firstIndex">첫번째 인덱스</param> /// <param name="lastIndex">마지막 인덱스</param> /// <param name="minimum">최소값</param> /// <param name="maximum">최대값</param> private void FindMinimumMaximum(ValueList valueList, int firstIndex, int lastIndex, out double minimum, out double maximum) { minimum = valueList[firstIndex]; maximum = valueList[lastIndex ]; for(int i = firstIndex; i <= lastIndex; i++) { if(valueList.Value[i] < minimum) { minimum = valueList[i]; } else if(valueList.Value[i] > maximum) { maximum = valueList[i]; } } } #endregion #region 축 스케일 조정하기 - AdjustAxisScale(points, firstIndex, lastIndex, vertical) /// <summary> /// 축 스케일 조정하기 /// </summary> /// <param name="points">포인트 시리즈</param> /// <param name="firstIndex">첫번째 인덱스</param> /// <param name="lastIndex">마지막 인덱스</param> /// <param name="vertical">수직 여부</param> private void AdjustAxisScale(Points points, int firstIndex, int lastIndex, bool vertical) { double minimum; double maximum; if(vertical) { FindMinimumMaximum(points.YValues, firstIndex, lastIndex, out minimum, out maximum); points.GetVertAxis.Automatic = false; points.GetVertAxis.SetMinMax(minimum, maximum); } else { FindMinimumMaximum(points.XValues, firstIndex, lastIndex, out minimum, out maximum); points.GetHorizAxis.Automatic = false; points.GetHorizAxis.SetMinMax(minimum, maximum); } } #endregion } } |
