本文整理汇总了C#中System.Windows.Forms.LayoutSettings类的典型用法代码示例。如果您正苦于以下问题:C# LayoutSettings类的具体用法?C# LayoutSettings怎么用?C# LayoutSettings使用的例子?那么, 这里精选的类代码示例或许可以为您提供帮助。
LayoutSettings类属于System.Windows.Forms命名空间,在下文中一共展示了LayoutSettings类的1个代码示例,这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞,您的评价将有助于系统推荐出更棒的C#代码示例。
示例1: Size
// The following class implements a sliding-tile puzzle.
// The GridStrip control is a custom ToolStrip that arranges
// its ToolStripButton controls in a grid layout. There is
// one empty cell, into which the user can slide an adjacent
// tile with a drag-and-drop operation. Tiles that are eligible
// for moving are highlighted.
public class GridStrip : ToolStrip
{
// The button that is the drag source.
private ToolStripButton dragButton = null;
// Settings for the ToolStrip control's TableLayoutPanel.
// This provides access to the cell position of each
// ToolStripButton.
private TableLayoutSettings tableSettings = null;
// The empty cell. ToolStripButton controls that are
// adjacent to this button can be moved to this button's
// cell position.
private ToolStripButton emptyCellButton = null;
// The dimensions of each tile. A tile is represented
// by a ToolStripButton controls.
private Size tileSize = new Size(128, 128);
// The number of rows in the GridStrip control.
private readonly int rows = 5;
// The number of columns in the GridStrip control.
private readonly int columns = 5;
// The one-time initialzation behavior is enforced
// with this field. For more information, see the
// OnPaint method.
private bool firstTime = false;
// This is a required by the Windows Forms designer.
private System.ComponentModel.IContainer components;
// The default constructor.
public GridStrip()
{
this.InitializeComponent();
this.InitializeTableLayoutSettings();
}
// This property exposes the empty cell to the
// GridStripRenderer class.
internal ToolStripButton EmptyCell
{
get
{
return this.emptyCellButton;
}
}
// This utility method initializes the TableLayoutPanel
// which contains the ToolStripButton controls.
private void InitializeTableLayoutSettings()
{
// Specify the numbers of rows and columns in the GridStrip control.
this.tableSettings = base.LayoutSettings as TableLayoutSettings;
this.tableSettings.ColumnCount = this.rows;
this.tableSettings.RowCount = this.columns;
// Create a dummy bitmap with the dimensions of each tile.
// The GridStrip control sizes itself based on these dimensions.
Bitmap b = new Bitmap(tileSize.Width, tileSize.Height);
// Populate the GridStrip control with ToolStripButton controls.
for (int i = 0; i < this.tableSettings.ColumnCount; i++)
{
for (int j = 0; j < this.tableSettings.RowCount; j++)
{
// Create a new ToolStripButton control.
ToolStripButton btn = new ToolStripButton();
btn.DisplayStyle = ToolStripItemDisplayStyle.Image;
btn.Image = b;
btn.ImageAlign = ContentAlignment.MiddleCenter;
btn.ImageScaling = ToolStripItemImageScaling.None;
btn.Margin = Padding.Empty;
btn.Padding = Padding.Empty;
// Add the new ToolStripButton control to the GridStrip.
this.Items.Add(btn);
// Set the cell position of the ToolStripButton control.
TableLayoutPanelCellPosition cellPos = new TableLayoutPanelCellPosition(i, j);
this.tableSettings.SetCellPosition(btn, cellPos);
// If this is the ToolStripButton control at cell (0,0),
// assign it as the empty cell button.
if( i == 0 && j == 0 )
{
btn.Text = "Empty Cell";
btn.Image = b;
this.emptyCellButton = btn;
}
}
}
}
// This method defines the Paint event behavior.
// The GridStripRenderer requires that the GridStrip
// be fully layed out when it is renders, so this
// initialization code cannot be placed in the
// GridStrip constructor. By the time the Paint
// event is raised, the control layout has been
// completed, so the GridStripRenderer can paint
// correctly. This one-time initialization is
// implemented with the firstTime field.
protected override void OnPaint(PaintEventArgs e)
{
base.OnPaint(e);
if (!this.firstTime)
{
this.Renderer = new GridStripRenderer();
// Comment this line to see the unscrambled image.
this.ScrambleButtons();
this.firstTime = true;
}
}
// This utility method changes the ToolStripButton control
// positions in the TableLayoutPanel. This scrambles the
// buttons to initialize the puzzle.
private void ScrambleButtons()
{
int i = 0;
int lastElement = this.Items.Count - 1;
while ( (i != lastElement ) &&
(lastElement - i > 1) )
{
TableLayoutPanelCellPosition pos1 =
this.tableSettings.GetCellPosition(this.Items[i]);
TableLayoutPanelCellPosition pos2 =
this.tableSettings.GetCellPosition(this.Items[lastElement]);
this.tableSettings.SetCellPosition(
this.Items[i++],
pos2);
this.tableSettings.SetCellPosition(
this.Items[lastElement--],
pos1);
}
}
// This method defines the MouseDown event behavior.
// If the user has clicked on a valid drag source,
// the drag operation starts.
protected override void OnMouseDown(MouseEventArgs mea)
{
base.OnMouseDown(mea);
ToolStripButton btn = this.GetItemAt(mea.Location) as ToolStripButton;
if (btn != null)
{
if (this.IsValidDragSource(btn))
{
this.dragButton = btn;
}
}
}
// This method defines the MouseMove event behavior.
protected override void OnMouseMove(MouseEventArgs mea)
{
base.OnMouseMove(mea);
// Is a drag operation pending?
if (this.dragButton != null)
{
// A drag operation is pending. Call DoDragDrop to
// determine the disposition of the operation.
DragDropEffects dropEffect = this.DoDragDrop(
new DataObject(this.dragButton),
DragDropEffects.Move);
}
}
// This method defines the DragOver event behavior.
protected override void OnDragOver(DragEventArgs dea)
{
base.OnDragOver(dea);
// Get the ToolStripButton control
// at the given mouse position.
Point p = new Point(dea.X, dea.Y);
ToolStripButton item = this.GetItemAt(
this.PointToClient(p)) as ToolStripButton;
// If the ToolStripButton control is the empty cell,
// indicate that the move operation is valid.
if( item == this.emptyCellButton )
{
// Set the drag operation to indicate a valid move.
dea.Effect = DragDropEffects.Move;
}
}
// This method defines the DragDrop event behavior.
protected override void OnDragDrop(DragEventArgs dea)
{
base.OnDragDrop(dea);
// Did a valid move operation occur?
if (dea.Effect == DragDropEffects.Move)
{
// The move operation is valid. Adjust the state
// of the GridStrip control's TableLayoutPanel,
// by swapping the positions of the source button
// and the empty cell button.
// Get the cell of the control to move.
TableLayoutPanelCellPosition sourcePos =
tableSettings.GetCellPosition(this.dragButton);
// Get the cell of the emptyCellButton.
TableLayoutPanelCellPosition dropPos =
tableSettings.GetCellPosition(this.emptyCellButton);
// Move the control to the empty cell.
tableSettings.SetCellPosition(this.dragButton, dropPos);
// Set the position of the empty cell to
// that of the previously occupied cell.
tableSettings.SetCellPosition(this.emptyCellButton, sourcePos);
// Reset the drag operation.
this.dragButton = null;
}
}
// This method defines the DragLeave event behavior.
// If the mouse leaves the client area of the GridStrip
// control, the drag operation is canceled.
protected override void OnDragLeave(EventArgs e)
{
base.OnDragLeave(e);
// Reset the drag operation.
this.dragButton = null;
}
// This method defines the ueryContinueDrag event behavior.
// If the mouse leaves the client area of the GridStrip
// control, the drag operation is canceled.
protected override void OnQueryContinueDrag(QueryContinueDragEventArgs qcdevent)
{
base.OnQueryContinueDrag(qcdevent);
// Get the current mouse position, in screen coordinates.
Point mousePos = this.PointToClient(Control.MousePosition);
// If the mouse position is outside the GridStrip control's
// client area, cancel the drag operation. Be sure to
// transform the mouse's screen coordinates to client coordinates.
if (!this.ClientRectangle.Contains(mousePos))
{
qcdevent.Action = DragAction.Cancel;
}
}
// This utility method determines if a button
// is positioned relative to the empty cell
// such that it can be dragged into the empty cell.
private bool IsValidDragSource(ToolStripButton b)
{
TableLayoutPanelCellPosition sourcePos =
tableSettings.GetCellPosition(b);
TableLayoutPanelCellPosition emptyPos =
tableSettings.GetCellPosition(this.emptyCellButton);
return (IsValidDragSource(sourcePos, emptyPos));
}
// This utility method determines if a cell position
// is adjacent to the empty cell.
internal static bool IsValidDragSource(
TableLayoutPanelCellPosition sourcePos,
TableLayoutPanelCellPosition emptyPos)
{
bool returnValue = false;
// A cell is considered to be a valid drag source if it
// is adjacent to the empty cell. Cells that are positioned
// on a diagonal are not valid.
if (((sourcePos.Column == emptyPos.Column - 1) && (sourcePos.Row == emptyPos.Row)) ||
((sourcePos.Column == emptyPos.Column + 1) && (sourcePos.Row == emptyPos.Row)) ||
((sourcePos.Column == emptyPos.Column) && (sourcePos.Row == emptyPos.Row - 1)) ||
((sourcePos.Column == emptyPos.Column) && (sourcePos.Row == emptyPos.Row + 1)))
{
returnValue = true;
}
return returnValue;
}