{
class FlowLayout : LayoutEngine
{
+ private static FlowLayoutSettings default_settings = new FlowLayoutSettings ();
+
public FlowLayout ()
{
}
public override bool Layout (object container, LayoutEventArgs args)
{
+ if (container is ToolStripPanel)
+ return false;
+
+ if (container is ToolStrip)
+ return LayoutToolStrip ((ToolStrip)container);
+
Control parent = container as Control;
- FlowLayoutSettings settings = (parent as FlowLayoutPanel).LayoutSettings;
+
+ FlowLayoutSettings settings;
+ if (parent is FlowLayoutPanel)
+ settings = (parent as FlowLayoutPanel).LayoutSettings;
+ else
+ settings = default_settings;
// Nothing to layout, exit method
if (parent.Controls.Count == 0) return false;
if (!c.Visible) { continue; }
// Resize any AutoSize controls to their preferred size
- if (c.AutoSize == true)
- c.Size = c.GetPreferredSize (c.Size);
+ if (c.AutoSize == true) {
+ Size new_size = c.GetPreferredSize (c.Size);
+ c.SetBoundsInternal (c.Left, c.Top, new_size.Width, new_size.Height, BoundsSpecified.None);
+ }
switch (settings.FlowDirection) {
case FlowDirection.BottomUp:
// Offset the right margin and set the control to our point
currentLocation.Offset (0, c.Margin.Bottom * -1);
- c.Location = new Point (currentLocation.X + c.Margin.Left, currentLocation.Y - c.Height);
+ c.SetBoundsInternal (currentLocation.X + c.Margin.Left, currentLocation.Y - c.Height, c.Width, c.Height, BoundsSpecified.None);
// Update our location pointer
currentLocation.Y -= (c.Height + c.Margin.Top);
default:
// Decide if it's time to start a new row
// - Our settings must be WrapContents, and we ran out of room or the previous control's FlowBreak == true
- if (settings.WrapContents)
- if ((parentDisplayRectangle.Width - currentLocation.X) < (c.Width + c.Margin.Left + c.Margin.Right) || forceFlowBreak) {
+ if (settings.WrapContents && !(parent is ToolStripPanel))
+ if ((parentDisplayRectangle.Width + parentDisplayRectangle.Left - currentLocation.X) < (c.Width + c.Margin.Left + c.Margin.Right) || forceFlowBreak) {
currentLocation.Y = FinishRow (rowControls);
currentLocation.X = parentDisplayRectangle.Left;
// Offset the left margin and set the control to our point
currentLocation.Offset (c.Margin.Left, 0);
- c.Location = new Point (currentLocation.X, currentLocation.Y + c.Margin.Top);
+ c.SetBoundsInternal (currentLocation.X, currentLocation.Y + c.Margin.Top, c.Width, c.Height, BoundsSpecified.None);
// Update our location pointer
currentLocation.X += c.Width + c.Margin.Right;
// Offset the right margin and set the control to our point
currentLocation.Offset (c.Margin.Right * -1, 0);
- c.Location = new Point (currentLocation.X - c.Width, currentLocation.Y + c.Margin.Top);
+ c.SetBoundsInternal (currentLocation.X - c.Width, currentLocation.Y + c.Margin.Top, c.Width, c.Height, BoundsSpecified.None);
// Update our location pointer
currentLocation.X -= (c.Width + c.Margin.Left);
// Decide if it's time to start a new column
// - Our settings must be WrapContents, and we ran out of room or the previous control's FlowBreak == true
if (settings.WrapContents)
- if ((parentDisplayRectangle.Height - currentLocation.Y) < (c.Height + c.Margin.Top + c.Margin.Bottom) || forceFlowBreak) {
+ if ((parentDisplayRectangle.Height + parentDisplayRectangle.Top - currentLocation.Y) < (c.Height + c.Margin.Top + c.Margin.Bottom) || forceFlowBreak) {
currentLocation.X = FinishColumn (rowControls);
currentLocation.Y = parentDisplayRectangle.Top;
// Offset the top margin and set the control to our point
currentLocation.Offset (0, c.Margin.Top);
- c.Location = new Point (currentLocation.X + c.Margin.Left, currentLocation.Y);
+ c.SetBoundsInternal (currentLocation.X + c.Margin.Left, currentLocation.Y, c.Width, c.Height, BoundsSpecified.None);
// Update our location pointer
currentLocation.Y += c.Height + c.Margin.Bottom;
// Set the new heights for each control
foreach (Control c in row)
if (allDockFill && noAuto)
- c.Height = 0;
+ c.SetBoundsInternal (c.Left, c.Top, c.Width, 0, BoundsSpecified.None);
else if (c.Dock == DockStyle.Fill || ((c.Anchor & AnchorStyles.Top) == AnchorStyles.Top) && ((c.Anchor & AnchorStyles.Bottom) == AnchorStyles.Bottom))
- c.Height = rowBottom - c.Top - c.Margin.Bottom;
+ c.SetBoundsInternal (c.Left, c.Top, c.Width, rowBottom - c.Top - c.Margin.Bottom, BoundsSpecified.None);
else if (c.Dock == DockStyle.Bottom || ((c.Anchor & AnchorStyles.Bottom) == AnchorStyles.Bottom))
- c.Top = rowBottom - c.Margin.Bottom - c.Height;
+ c.SetBoundsInternal (c.Left, rowBottom - c.Margin.Bottom - c.Height, c.Width, c.Height, BoundsSpecified.None);
else if (c.Dock == DockStyle.Top || ((c.Anchor & AnchorStyles.Top) == AnchorStyles.Top))
continue;
else
- c.Top = ((rowBottom - rowTop) / 2) - (c.Height / 2) + (int)Math.Floor (((c.Margin.Top - c.Margin.Bottom) / 2.0)) + rowTop;
+ c.SetBoundsInternal (c.Left, ((rowBottom - rowTop) / 2) - (c.Height / 2) + (int)Math.Floor (((c.Margin.Top - c.Margin.Bottom) / 2.0)) + rowTop, c.Width, c.Height, BoundsSpecified.None);
// Return bottom y of this row used
if (rowBottom == 0)
// Set the new widths for each control
foreach (Control c in col)
+ if (allDockFill && noAuto)
+ c.SetBoundsInternal (c.Left, c.Top, 0, c.Height, BoundsSpecified.None);
+ else if (c.Dock == DockStyle.Fill || ((c.Anchor & AnchorStyles.Left) == AnchorStyles.Left) && ((c.Anchor & AnchorStyles.Right) == AnchorStyles.Right))
+ c.SetBoundsInternal (c.Left, c.Top, rowRight - c.Left - c.Margin.Right, c.Height, BoundsSpecified.None);
+ else if (c.Dock == DockStyle.Right || ((c.Anchor & AnchorStyles.Right) == AnchorStyles.Right))
+ c.SetBoundsInternal (rowRight - c.Margin.Right - c.Width, c.Top, c.Width, c.Height, BoundsSpecified.None);
+ else if (c.Dock == DockStyle.Left || ((c.Anchor & AnchorStyles.Left) == AnchorStyles.Left))
+ continue;
+ else
+ c.SetBoundsInternal (((rowRight - rowLeft) / 2) - (c.Width / 2) + (int)Math.Floor (((c.Margin.Left - c.Margin.Right) / 2.0)) + rowLeft, c.Top, c.Width, c.Height, BoundsSpecified.None);
+
+ // Return rightmost x of this row used
+ if (rowRight == 0)
+ return rowLeft;
+
+ return rowRight;
+ }
+
+ #region Layout for ToolStrip
+ // ToolStrips use the same FlowLayout, but is made up of ToolStripItems which
+ // are Components instead of Controls, so we have to duplicate this login for
+ // ToolStripItems.
+ private bool LayoutToolStrip (ToolStrip parent)
+ {
+ FlowLayoutSettings settings;
+ settings = (FlowLayoutSettings)parent.LayoutSettings;
+
+ // Nothing to layout, exit method
+ if (parent.Items.Count == 0) return false;
+
+ foreach (ToolStripItem tsi in parent.Items)
+ tsi.SetPlacement (ToolStripItemPlacement.Main);
+
+ // Use DisplayRectangle so that parent.Padding is honored.
+ Rectangle parentDisplayRectangle = parent.DisplayRectangle;
+ Point currentLocation;
+
+ // Set our starting point based on flow direction
+ switch (settings.FlowDirection) {
+ case FlowDirection.BottomUp:
+ currentLocation = new Point (parentDisplayRectangle.Left, parentDisplayRectangle.Bottom);
+ break;
+ case FlowDirection.LeftToRight:
+ case FlowDirection.TopDown:
+ default:
+ currentLocation = parentDisplayRectangle.Location;
+ break;
+ case FlowDirection.RightToLeft:
+ currentLocation = new Point (parentDisplayRectangle.Right, parentDisplayRectangle.Top);
+ break;
+ }
+
+ bool forceFlowBreak = false;
+
+ List<ToolStripItem> rowControls = new List<ToolStripItem> ();
+
+ foreach (ToolStripItem c in parent.Items) {
+ // Only apply layout to visible controls.
+ if (!c.Available) { continue; }
+
+ // Resize any AutoSize controls to their preferred size
+ if (c.AutoSize == true)
+ c.SetBounds (new Rectangle (c.Location, c.GetPreferredSize (c.Size)));
+
+ switch (settings.FlowDirection) {
+ case FlowDirection.BottomUp:
+ // Decide if it's time to start a new column
+ // - Our settings must be WrapContents, and we ran out of room or the previous control's FlowBreak == true
+ if (settings.WrapContents)
+ if ((currentLocation.Y) < (c.Height + c.Margin.Top + c.Margin.Bottom) || forceFlowBreak) {
+
+ currentLocation.X = FinishColumn (rowControls);
+ currentLocation.Y = parentDisplayRectangle.Bottom;
+
+ forceFlowBreak = false;
+ rowControls.Clear ();
+ }
+
+ // Offset the right margin and set the control to our point
+ currentLocation.Offset (0, c.Margin.Bottom * -1);
+ c.Location = new Point (currentLocation.X + c.Margin.Left, currentLocation.Y - c.Height);
+
+ // Update our location pointer
+ currentLocation.Y -= (c.Height + c.Margin.Top);
+ break;
+ case FlowDirection.LeftToRight:
+ default:
+ // Decide if it's time to start a new row
+ // - Our settings must be WrapContents, and we ran out of room or the previous control's FlowBreak == true
+ if (settings.WrapContents)
+ if ((parentDisplayRectangle.Width - currentLocation.X) < (c.Width + c.Margin.Left + c.Margin.Right) || forceFlowBreak) {
+
+ currentLocation.Y = FinishRow (rowControls);
+ currentLocation.X = parentDisplayRectangle.Left;
+
+ forceFlowBreak = false;
+ rowControls.Clear ();
+ }
+
+ // Offset the left margin and set the control to our point
+ currentLocation.Offset (c.Margin.Left, 0);
+ c.Location = new Point (currentLocation.X, currentLocation.Y + c.Margin.Top);
+
+ // Update our location pointer
+ currentLocation.X += c.Width + c.Margin.Right;
+ break;
+ case FlowDirection.RightToLeft:
+ // Decide if it's time to start a new row
+ // - Our settings must be WrapContents, and we ran out of room or the previous control's FlowBreak == true
+ if (settings.WrapContents)
+ if ((currentLocation.X) < (c.Width + c.Margin.Left + c.Margin.Right) || forceFlowBreak) {
+
+ currentLocation.Y = FinishRow (rowControls);
+ currentLocation.X = parentDisplayRectangle.Right;
+
+ forceFlowBreak = false;
+ rowControls.Clear ();
+ }
+
+ // Offset the right margin and set the control to our point
+ currentLocation.Offset (c.Margin.Right * -1, 0);
+ c.Location = new Point (currentLocation.X - c.Width, currentLocation.Y + c.Margin.Top);
+
+ // Update our location pointer
+ currentLocation.X -= (c.Width + c.Margin.Left);
+ break;
+ case FlowDirection.TopDown:
+ // Decide if it's time to start a new column
+ // - Our settings must be WrapContents, and we ran out of room or the previous control's FlowBreak == true
+ if (settings.WrapContents)
+ if ((parentDisplayRectangle.Height - currentLocation.Y) < (c.Height + c.Margin.Top + c.Margin.Bottom) || forceFlowBreak) {
+
+ currentLocation.X = FinishColumn (rowControls);
+ currentLocation.Y = parentDisplayRectangle.Top;
+
+ forceFlowBreak = false;
+ rowControls.Clear ();
+ }
+
+ // Offset the top margin and set the control to our point
+ currentLocation.Offset (0, c.Margin.Top);
+ c.Location = new Point (currentLocation.X + c.Margin.Left, currentLocation.Y);
+
+ // Update our location pointer
+ currentLocation.Y += c.Height + c.Margin.Bottom;
+ break;
+ }
+ // Add it to our list of things to adjust the second dimension of
+ rowControls.Add (c);
+
+ // If user set a flowbreak on this control, it will be the last one in this row/column
+ if (settings.GetFlowBreak (c))
+ forceFlowBreak = true;
+ }
+
+ int final_height = 0;
+
+ // Set the control heights/widths for the last row/column
+ if (settings.FlowDirection == FlowDirection.LeftToRight || settings.FlowDirection == FlowDirection.RightToLeft)
+ final_height = FinishRow (rowControls);
+ else
+ FinishColumn (rowControls);
+
+ if (final_height > 0)
+ parent.SetBoundsInternal (parent.Left, parent.Top, parent.Width, final_height + parent.Padding.Bottom, BoundsSpecified.None);
+
+ return false;
+
+ }
+
+ // Calculate the heights of the controls, returns the y coordinate of the greatest height it uses
+ private int FinishRow (List<ToolStripItem> row)
+ {
+ // Nothing to do
+ if (row.Count == 0) return 0;
+
+ int rowTop = int.MaxValue;
+ int rowBottom = 0;
+ bool allDockFill = true;
+ bool noAuto = true;
+
+ // Special semantics if all controls are Dock.Fill/Anchor:Top,Bottom or AutoSize = true
+ foreach (ToolStripItem c in row) {
+ if (c.Dock != DockStyle.Fill && !((c.Anchor & AnchorStyles.Top) == AnchorStyles.Top && (c.Anchor & AnchorStyles.Bottom) == AnchorStyles.Bottom))
+ allDockFill = false;
+ if (c.AutoSize == true)
+ noAuto = false;
+ }
+
+ // Find the tallest control with a concrete height
+ foreach (ToolStripItem c in row) {
+ if (c.Bottom + c.Margin.Bottom > rowBottom && (c.Dock != DockStyle.Fill) && ((c.Anchor & AnchorStyles.Top) != AnchorStyles.Top || (c.Anchor & AnchorStyles.Bottom) != AnchorStyles.Bottom || c.AutoSize == true))
+ rowBottom = c.Bottom + c.Margin.Bottom;
+ if (c.Top - c.Margin.Top < rowTop)
+ rowTop = c.Top - c.Margin.Top;
+ }
+
+ // Find the tallest control that is AutoSize = true
+ if (rowBottom == 0)
+ foreach (ToolStripItem c in row)
+ if (c.Bottom + c.Margin.Bottom > rowBottom && (c.Dock != DockStyle.Fill && c.AutoSize == true))
+ rowBottom = c.Bottom + c.Margin.Bottom;
+
+ // Find the tallest control that is Dock = Fill
+ if (rowBottom == 0)
+ foreach (ToolStripItem c in row)
+ if (c.Bottom + c.Margin.Bottom > rowBottom && (c.Dock == DockStyle.Fill))
+ rowBottom = c.Bottom + c.Margin.Bottom;
+
+ // Set the new heights for each control
+ foreach (ToolStripItem c in row)
+ if (allDockFill && noAuto)
+ c.Height = 0;
+ else if (c.Dock == DockStyle.Fill || ((c.Anchor & AnchorStyles.Top) == AnchorStyles.Top) && ((c.Anchor & AnchorStyles.Bottom) == AnchorStyles.Bottom))
+ c.Height = rowBottom - c.Top - c.Margin.Bottom;
+ else if (c.Dock == DockStyle.Bottom || ((c.Anchor & AnchorStyles.Bottom) == AnchorStyles.Bottom))
+ c.Top = rowBottom - c.Margin.Bottom - c.Height;
+ else if (c.Dock == DockStyle.Top || ((c.Anchor & AnchorStyles.Top) == AnchorStyles.Top))
+ continue;
+ else
+ c.Top = ((rowBottom - rowTop) / 2) - (c.Height / 2) + (int)Math.Floor (((c.Margin.Top - c.Margin.Bottom) / 2.0)) + rowTop;
+
+ // Return bottom y of this row used
+ if (rowBottom == 0)
+ return rowTop;
+
+ return rowBottom;
+ }
+
+ // Calculate the widths of the controls, returns the x coordinate of the greatest width it uses
+ private int FinishColumn (List<ToolStripItem> col)
+ {
+ // Nothing to do
+ if (col.Count == 0) return 0;
+
+ int rowLeft = int.MaxValue;
+ int rowRight = 0;
+ bool allDockFill = true;
+ bool noAuto = true;
+
+ // Special semantics if all controls are Dock.Fill/Anchor:Left,Right or AutoSize = true
+ foreach (ToolStripItem c in col) {
+ if (c.Dock != DockStyle.Fill && !((c.Anchor & AnchorStyles.Left) == AnchorStyles.Left && (c.Anchor & AnchorStyles.Right) == AnchorStyles.Right))
+ allDockFill = false;
+ if (c.AutoSize == true)
+ noAuto = false;
+ }
+
+ // Find the widest control with a concrete width
+ foreach (ToolStripItem c in col) {
+ if (c.Right + c.Margin.Right > rowRight && (c.Dock != DockStyle.Fill) && ((c.Anchor & AnchorStyles.Left) != AnchorStyles.Left || (c.Anchor & AnchorStyles.Right) != AnchorStyles.Right || c.AutoSize == true))
+ rowRight = c.Right + c.Margin.Right;
+ if (c.Left - c.Margin.Left < rowLeft)
+ rowLeft = c.Left - c.Margin.Left;
+ }
+
+ // Find the widest control that is AutoSize = true
+ if (rowRight == 0)
+ foreach (ToolStripItem c in col)
+ if (c.Right + c.Margin.Right > rowRight && (c.Dock != DockStyle.Fill && c.AutoSize == true))
+ rowRight = c.Right + c.Margin.Right;
+
+ // Find the widest control that is Dock = Fill
+ if (rowRight == 0)
+ foreach (ToolStripItem c in col)
+ if (c.Right + c.Margin.Right > rowRight && (c.Dock == DockStyle.Fill))
+ rowRight = c.Right + c.Margin.Right;
+
+ // Set the new widths for each control
+ foreach (ToolStripItem c in col)
if (allDockFill && noAuto)
c.Width = 0;
else if (c.Dock == DockStyle.Fill || ((c.Anchor & AnchorStyles.Left) == AnchorStyles.Left) && ((c.Anchor & AnchorStyles.Right) == AnchorStyles.Right))
return rowRight;
}
+ #endregion
}
}
#endif
\ No newline at end of file
projects / mono.git / blobdiff