GridLayout.cs :  » Game » RealmForge » LayoutManager » C# / CSharp Open Source

using System;
using ControlSystem.Windows.Forms.Control;
using RectangleSystem.Drawing.Rectangle;

namespace LayoutManager{
  public class GridLayout : ILayoutManager {
    private int curRow;
    private int curCol;
    private Control[][] controls;
    private Control con;

    public GridLayout(int rows, int cols) {
      rows = (rows > 0)?rows:1;
      cols = (cols > 0)?cols:1;
      controls = new Control[rows][];
      for (int i = 0; i < rows; ++i) {
        controls[i] = new Control[cols];
      }
      curCol = 0;
      curRow = 0;
    }

    private int Rows {
      get {
        return controls.Length;
      }
    }

    private int Cols {
      get {
        return controls[0].Length;
      }
    }

    public void GoTo(int row, int col) {
      if (row >= 0 && row < Rows) {
        curRow = row;
      }
      if (col >= 0 && col < Cols) {
        curCol = col;
      }
    }

    #region ILayoutMgr Members

    public Control Control {
      get {
        return con;
      }
      set {
        if (value != null && value != con) {
          con = value;
        }
      }
    }

    public void DoLayout() {
      if (Control != null) {
        int rowSpace = Control.ClientSize.Height / Rows;
        int colSpace = Control.ClientSize.Width / Cols;
        for (int r = 0; r < Rows; ++r) {
          for (int c = 0; c < Cols; ++c) {
            if (controls[r][c] != null) {
              controls[r][c].Bounds = new Rectangle(c * colSpace, r * rowSpace, colSpace, rowSpace);
            }
          }
        }
      }
    }

    public void ControlAdded(Control c) {
      if (Control != null && curRow < controls.Length) {
        if (controls[curRow][curCol] != null) {
          Control.Controls.Remove(controls[curRow][curCol]);
        }
        controls[curRow][curCol] = c;
        curCol += 1;
        if (curCol >= Cols) {
          curCol = 0;
          curRow = curRow + 1;
        }
      }
    }

    public void ControlRemoved(Control c) {
      if (Control != null) {
        for (int row = 0; row < Rows; ++row) {
          for (int col = 0; col < Cols; ++col) {
            if (controls[row][col] == c) {
              controls[row][col] = null;
            }
          }
        }
      }
    }

    #endregion
  }
}