public void TableLayoutSettings_SetColumnSpan_MultipleTimes_GetReturnsExpected(TableLayoutSettings settings)
{
var control = new ScrollableControl();
settings.SetColumnSpan(control, 1);
Assert.Equal(1, settings.GetColumnSpan(control));
settings.SetColumnSpan(control, 2);
Assert.Equal(2, settings.GetColumnSpan(control));
}
public void TableLayoutSettings_SetColumnSpan_ValidControl_GetReturnsExpected(TableLayoutSettings settings, int value)
{
var control = new ScrollableControl();
settings.SetColumnSpan(control, value);
Assert.Equal(value, settings.GetColumnSpan(control));
}
public void TableLayoutSettings_GetColumnSpan_InvalidControlStub_ReturnsExpected()
{
var converter = new TableLayoutSettingsTypeConverter();
TableLayoutSettings settings = Assert.IsType <TableLayoutSettings>(converter.ConvertFrom(@"<?xml version=""1.0"" encoding=""utf-16""?><Root />"));
Assert.Equal(1, settings.GetColumnSpan("control"));
}
public void TableLayoutSettings_SetColumnSpan_NullControlStub_ThrowsArgumentNullException()
{
var converter = new TableLayoutSettingsTypeConverter();
TableLayoutSettings settings = Assert.IsType <TableLayoutSettings>(converter.ConvertFrom(@"<?xml version=""1.0"" encoding=""utf-16""?><Root />"));
Assert.Throws <ArgumentNullException>("control", () => settings.SetColumnSpan(null, 1));
Assert.Throws <ArgumentNullException>("control", () => settings.GetColumnSpan(null));
}
public void TableLayoutSettings_GetColumnSpan_InvalidControl_ThrowsNotSupportedException()
{
var toolStrip = new ToolStrip {
LayoutStyle = ToolStripLayoutStyle.Table
};
TableLayoutSettings settings = Assert.IsType <TableLayoutSettings>(toolStrip.LayoutSettings);
Assert.Throws <NotSupportedException>(() => settings.GetColumnSpan("control"));
}
public void TableLayoutSettings_Serialize_Deserialize_Success()
{
var toolStrip = new ToolStrip {
LayoutStyle = ToolStripLayoutStyle.Table
};
TableLayoutSettings settings = Assert.IsType <TableLayoutSettings>(toolStrip.LayoutSettings);
var columnStyle = new ColumnStyle(SizeType.Percent, 1);
var rowStyle = new RowStyle(SizeType.Percent, 1);
var controlWithName = new ScrollableControl {
Name = "name"
};
settings.SetColumnSpan(controlWithName, 1);
settings.SetRowSpan(controlWithName, 2);
settings.SetColumn(controlWithName, 3);
settings.SetRow(controlWithName, 4);
settings.ColumnStyles.Add(columnStyle);
settings.RowStyles.Add(rowStyle);
using (var stream = new MemoryStream())
{
var formatter = new BinaryFormatter();
formatter.Serialize(stream, settings);
stream.Seek(0, SeekOrigin.Begin);
TableLayoutSettings result = Assert.IsType <TableLayoutSettings>(formatter.Deserialize(stream));
Assert.Equal(columnStyle.SizeType, ((ColumnStyle)Assert.Single(result.ColumnStyles)).SizeType);
Assert.Equal(columnStyle.Width, ((ColumnStyle)Assert.Single(result.ColumnStyles)).Width);
Assert.Equal(rowStyle.SizeType, ((RowStyle)Assert.Single(result.RowStyles)).SizeType);
Assert.Equal(rowStyle.Height, ((RowStyle)Assert.Single(result.RowStyles)).Height);
Assert.Equal(1, result.GetColumnSpan(controlWithName));
Assert.Equal(1, result.GetRowSpan(controlWithName));
Assert.Equal(-1, result.GetColumn(controlWithName));
Assert.Equal(-1, result.GetRow(controlWithName));
}
}
public void TableLayoutSettings_GetColumnSpan_NullControl_ThrowsArgumentNullException(TableLayoutSettings settings)
{
Assert.Throws <ArgumentNullException>("control", () => settings.GetColumnSpan(null));
}
private void LayoutControls(IArrangedContainer panel, IArrangedElement[,] actual_positions, int[] column_widths, int[] row_heights)
{
TableLayoutSettings settings = GetLayoutSettings(panel);
int border_width = 0;
if (panel is TableLayoutPanel table_panel)
{
border_width = TableLayoutPanel.GetCellBorderWidth(table_panel.CellBorderStyle);
}
int columns = actual_positions.GetLength(0);
int rows = actual_positions.GetLength(1);
Point current_pos = new Point(panel.DisplayRectangle.Left + border_width, panel.DisplayRectangle.Top + border_width);
for (int y = 0; y < rows; y++)
{
for (int x = 0; x < columns; x++)
{
IArrangedElement c = actual_positions[x, y];
if (c != null && c != dummy_control && c.Visible)
{
Size preferred;
int new_x = 0;
int new_y = 0;
int new_width = 0;
int new_height = 0;
int column_width = column_widths[x];
for (int i = 1; i < Math.Min(settings.GetColumnSpan(c), column_widths.Length - x); i++)
{
column_width += column_widths[x + i];
}
int column_height = row_heights[y];
for (int i = 1; i < Math.Min(settings.GetRowSpan(c), row_heights.Length - y); i++)
{
column_height += row_heights[y + i];
}
preferred = GetControlSize(c, new Size(column_width - c.Margin.Horizontal, column_height - c.Margin.Vertical));
// Figure out the width of the control
if (c.Dock == DockStyle.Fill || c.Dock == DockStyle.Top || c.Dock == DockStyle.Bottom || ((c.Anchor & AnchorStyles.Left) == AnchorStyles.Left && (c.Anchor & AnchorStyles.Right) == AnchorStyles.Right))
{
new_width = column_width - c.Margin.Left - c.Margin.Right;
}
else
{
new_width = Math.Min(preferred.Width, column_width - c.Margin.Left - c.Margin.Right);
}
// Figure out the height of the control
if (c.Dock == DockStyle.Fill || c.Dock == DockStyle.Left || c.Dock == DockStyle.Right || ((c.Anchor & AnchorStyles.Top) == AnchorStyles.Top && (c.Anchor & AnchorStyles.Bottom) == AnchorStyles.Bottom))
{
new_height = column_height - c.Margin.Top - c.Margin.Bottom;
}
else
{
new_height = Math.Min(preferred.Height, column_height - c.Margin.Top - c.Margin.Bottom);
}
// Figure out the left location of the control
if (c.Dock == DockStyle.Left || c.Dock == DockStyle.Fill || (c.Anchor & AnchorStyles.Left) == AnchorStyles.Left)
{
new_x = current_pos.X + c.Margin.Left;
}
else if (c.Dock == DockStyle.Right || (c.Anchor & AnchorStyles.Right) == AnchorStyles.Right)
{
new_x = (current_pos.X + column_width) - new_width - c.Margin.Right;
}
else // (center control)
{
new_x = (current_pos.X + (column_width - c.Margin.Left - c.Margin.Right) / 2) + c.Margin.Left - (new_width / 2);
}
// Figure out the top location of the control
if (c.Dock == DockStyle.Top || c.Dock == DockStyle.Fill || (c.Anchor & AnchorStyles.Top) == AnchorStyles.Top)
{
new_y = current_pos.Y + c.Margin.Top;
}
else if (c.Dock == DockStyle.Bottom || (c.Anchor & AnchorStyles.Bottom) == AnchorStyles.Bottom)
{
new_y = (current_pos.Y + column_height) - new_height - c.Margin.Bottom;
}
else // (center control)
{
new_y = (current_pos.Y + (column_height - c.Margin.Top - c.Margin.Bottom) / 2) + c.Margin.Top - (new_height / 2);
}
c.SetBounds(new_x, new_y, new_width, new_height, BoundsSpecified.None);
}
current_pos.Offset(column_widths[x] + border_width, 0);
}
current_pos.Offset((-1 * current_pos.X) + border_width + panel.DisplayRectangle.Left, row_heights[y] + border_width);
}
}
internal Control[,] CalculateControlPositions(TableLayoutPanel panel, int columns, int rows)
{
Control[,] grid = new Control[columns, rows];
TableLayoutSettings settings = panel.LayoutSettings;
// First place all controls that have an explicit col/row
foreach (Control c in panel.Controls)
{
int col = settings.GetColumn(c);
int row = settings.GetRow(c);
if (col >= 0 && row >= 0)
{
if (col >= columns)
{
return(CalculateControlPositions(panel, col + 1, rows));
}
if (row >= rows)
{
return(CalculateControlPositions(panel, columns, row + 1));
}
if (grid[col, row] == null)
{
int col_span = Math.Min(settings.GetColumnSpan(c), columns);
int row_span = Math.Min(settings.GetRowSpan(c), rows);
if (col + col_span > columns)
{
if (row + 1 < rows)
{
grid[col, row] = dummy_control;
row++;
col = 0;
}
else if (settings.GrowStyle == TableLayoutPanelGrowStyle.AddColumns)
{
return(CalculateControlPositions(panel, columns + 1, rows));
}
else
{
throw new ArgumentException();
}
}
if (row + row_span > rows)
{
if (settings.GrowStyle == TableLayoutPanelGrowStyle.AddRows)
{
return(CalculateControlPositions(panel, columns, rows + 1));
}
else
{
throw new ArgumentException();
}
}
grid[col, row] = c;
// Fill in the rest of this control's row/column extent with dummy
// controls, so that other controls don't get put there.
for (int i = 0; i < col_span; i++)
{
for (int j = 0; j < row_span; j++)
{
if (i != 0 || j != 0)
{
grid[col + i, row + j] = dummy_control;
}
}
}
}
}
}
int x_pointer = 0;
int y_pointer = 0;
// Fill in gaps with controls that do not have an explicit col/row
foreach (Control c in panel.Controls)
{
int col = settings.GetColumn(c);
int row = settings.GetRow(c);
if ((col >= 0 && col < columns) && (row >= 0 && row < rows) && (grid[col, row] == c || grid[col, row] == dummy_control))
{
continue;
}
for (int y = y_pointer; y < rows; y++)
{
y_pointer = y;
x_pointer = 0;
for (int x = x_pointer; x < columns; x++)
{
x_pointer = x;
if (grid[x, y] == null)
{
int col_span = Math.Min(settings.GetColumnSpan(c), columns);
int row_span = Math.Min(settings.GetRowSpan(c), rows);
if (x + col_span > columns)
{
if (y + 1 < rows)
{
break;
}
else if (settings.GrowStyle == TableLayoutPanelGrowStyle.AddColumns)
{
return(CalculateControlPositions(panel, columns + 1, rows));
}
else
{
throw new ArgumentException();
}
}
if (y + row_span > rows)
{
if (x + 1 < columns)
{
break;
}
else if (settings.GrowStyle == TableLayoutPanelGrowStyle.AddRows)
{
return(CalculateControlPositions(panel, columns, rows + 1));
}
else
{
throw new ArgumentException();
}
}
grid[x, y] = c;
// Fill in the rest of this control's row/column extent with dummy
// controls, so that other controls don't get put there.
for (int i = 0; i < col_span; i++)
{
for (int j = 0; j < row_span; j++)
{
if (i != 0 || j != 0)
{
grid[x + i, y + j] = dummy_control;
}
}
}
// I know someone will kill me for using a goto, but
// sometimes they really are the easiest way...
goto Found;
}
else
{
// MS adds the controls only to the first row if
// GrowStyle is AddColumns and RowCount is 0,
// so interrupt the search for a free horizontal cell
// beyond the first one in the given vertical
if (settings.GrowStyle == TableLayoutPanelGrowStyle.AddColumns &&
settings.RowCount == 0)
{
break;
}
}
}
}
// MS adds rows instead of columns even when GrowStyle is AddColumns,
// but RowCount is 0.
TableLayoutPanelGrowStyle adjustedGrowStyle = settings.GrowStyle;
if (settings.GrowStyle == TableLayoutPanelGrowStyle.AddColumns)
{
if (settings.RowCount == 0)
{
adjustedGrowStyle = TableLayoutPanelGrowStyle.AddRows;
}
}
switch (adjustedGrowStyle)
{
case TableLayoutPanelGrowStyle.AddColumns:
return(CalculateControlPositions(panel, columns + 1, rows));
case TableLayoutPanelGrowStyle.AddRows:
default:
return(CalculateControlPositions(panel, columns, rows + 1));
case TableLayoutPanelGrowStyle.FixedSize:
throw new ArgumentException();
}
Found :;
}
return(grid);
}
private void LayoutControls(TableLayoutPanel panel)
{
TableLayoutSettings settings = panel.LayoutSettings;
int border_width = TableLayoutPanel.GetCellBorderWidth(panel.CellBorderStyle);
int columns = panel.actual_positions.GetLength(0);
int rows = panel.actual_positions.GetLength(1);
Point_ current_pos = new Point_(panel.DisplayRectangle.Left + border_width, panel.DisplayRectangle.Top + border_width);
for (int y = 0; y < rows; y++)
{
for (int x = 0; x < columns; x++)
{
Control c = panel.actual_positions[x, y];
if (c != null && c != dummy_control)
{
Size_ preferred;
if (c.AutoSize)
{
preferred = c.PreferredSize;
}
else
{
preferred = c.ExplicitBounds.Size;
}
int new_x = 0;
int new_y = 0;
int new_width = 0;
int new_height = 0;
// Figure out the width of the control
int column_width = panel.column_widths[x];
for (int i = 1; i < Math.Min(settings.GetColumnSpan(c), panel.column_widths.Length); i++)
{
column_width += panel.column_widths[x + i];
}
if (c.Dock == DockStyle.Fill || c.Dock == DockStyle.Top || c.Dock == DockStyle.Bottom || ((c.Anchor & AnchorStyles.Left) == AnchorStyles.Left && (c.Anchor & AnchorStyles.Right) == AnchorStyles.Right))
{
new_width = column_width - c.Margin.Left - c.Margin.Right;
}
else
{
new_width = Math.Min(preferred.Width, column_width - c.Margin.Left - c.Margin.Right);
}
// Figure out the height of the control
int column_height = panel.row_heights[y];
for (int i = 1; i < Math.Min(settings.GetRowSpan(c), panel.row_heights.Length); i++)
{
column_height += panel.row_heights[y + i];
}
if (c.Dock == DockStyle.Fill || c.Dock == DockStyle.Left || c.Dock == DockStyle.Right || ((c.Anchor & AnchorStyles.Top) == AnchorStyles.Top && (c.Anchor & AnchorStyles.Bottom) == AnchorStyles.Bottom))
{
new_height = column_height - c.Margin.Top - c.Margin.Bottom;
}
else
{
new_height = Math.Min(preferred.Height, column_height - c.Margin.Top - c.Margin.Bottom);
}
// Figure out the left location of the control
if (c.Dock == DockStyle.Left || c.Dock == DockStyle.Fill || (c.Anchor & AnchorStyles.Left) == AnchorStyles.Left)
{
new_x = current_pos.X + c.Margin.Left;
}
else if (c.Dock == DockStyle.Right || (c.Anchor & AnchorStyles.Right) == AnchorStyles.Right)
{
new_x = (current_pos.X + column_width) - new_width - c.Margin.Right;
}
else // (center control)
{
new_x = (current_pos.X + (column_width - c.Margin.Left - c.Margin.Right) / 2) + c.Margin.Left - (new_width / 2);
}
// Figure out the top location of the control
if (c.Dock == DockStyle.Top || c.Dock == DockStyle.Fill || (c.Anchor & AnchorStyles.Top) == AnchorStyles.Top)
{
new_y = current_pos.Y + c.Margin.Top;
}
else if (c.Dock == DockStyle.Bottom || (c.Anchor & AnchorStyles.Bottom) == AnchorStyles.Bottom)
{
new_y = (current_pos.Y + column_height) - new_height - c.Margin.Bottom;
}
else // (center control)
{
new_y = (current_pos.Y + (column_height - c.Margin.Top - c.Margin.Bottom) / 2) + c.Margin.Top - (new_height / 2);
}
c.SetBoundsInternal(new_x, new_y, new_width, new_height, BoundsSpecified.None);
}
current_pos.Offset(panel.column_widths[x] + border_width, 0);
}
current_pos.Offset((-1 * current_pos.X) + border_width + panel.DisplayRectangle.Left, panel.row_heights[y] + border_width);
}
}
private void CalculateColumnRowSizes(TableLayoutPanel panel, int columns, int rows)
{
TableLayoutSettings settings = panel.LayoutSettings;
panel.column_widths = new int[panel.actual_positions.GetLength(0)];
panel.row_heights = new int[panel.actual_positions.GetLength(1)];
int border_width = TableLayoutPanel.GetCellBorderWidth(panel.CellBorderStyle);
Rectangle_ parentDisplayRectangle = panel.DisplayRectangle;
TableLayoutColumnStyleCollection col_styles = new TableLayoutColumnStyleCollection(panel);
foreach (ColumnStyle cs in settings.ColumnStyles)
{
col_styles.Add(new ColumnStyle(cs.SizeType, cs.Width));
}
TableLayoutRowStyleCollection row_styles = new TableLayoutRowStyleCollection(panel);
foreach (RowStyle rs in settings.RowStyles)
{
row_styles.Add(new RowStyle(rs.SizeType, rs.Height));
}
// If we have more columns than columnstyles, temporarily add enough columnstyles
if (columns > col_styles.Count)
{
for (int i = col_styles.Count; i < columns; i++)
{
col_styles.Add(new ColumnStyle());
}
}
// Same for rows..
if (rows > row_styles.Count)
{
for (int i = row_styles.Count; i < rows; i++)
{
row_styles.Add(new RowStyle());
}
}
while (row_styles.Count > rows)
{
row_styles.RemoveAt(row_styles.Count - 1);
}
while (col_styles.Count > columns)
{
col_styles.RemoveAt(col_styles.Count - 1);
}
// Find the largest column-span/row-span values.
int max_colspan = 0, max_rowspan = 0;
foreach (Control c in panel.Controls)
{
max_colspan = Math.Max(max_colspan, settings.GetColumnSpan(c));
max_rowspan = Math.Max(max_rowspan, settings.GetRowSpan(c));
}
// Figure up all the column widths
int total_width = parentDisplayRectangle.Width - (border_width * (columns + 1));
int index = 0;
// First assign all the Absolute sized columns..
foreach (ColumnStyle cs in col_styles)
{
if (cs.SizeType == SizeType.Absolute)
{
panel.column_widths[index] = (int)cs.Width;
total_width -= (int)cs.Width;
}
index++;
}
// Next, assign all the AutoSize columns to the width of their widest
// control. If the table-layout is auto-sized, then make sure that
// no column with Percent styling clips its contents.
// (per http://msdn.microsoft.com/en-us/library/ms171690.aspx)
for (int colspan = 0; colspan < max_colspan; ++colspan)
{
for (index = colspan; index < col_styles.Count - colspan; ++index)
{
ColumnStyle cs = col_styles[index];
if (cs.SizeType == SizeType.AutoSize ||
(panel.AutoSize && cs.SizeType == SizeType.Percent))
{
int max_width = panel.column_widths[index];
// Find the widest control in the column
for (int i = 0; i < rows; i++)
{
Control c = panel.actual_positions[index - colspan, i];
if (c != null && c != dummy_control && c.VisibleInternal)
{
// Skip any controls not being sized in this pass.
if (settings.GetColumnSpan(c) != colspan + 1)
{
continue;
}
// Calculate the maximum control width.
if (c.AutoSize)
{
max_width = Math.Max(max_width, c.PreferredSize.Width + c.Margin.Horizontal);
}
else
{
max_width = Math.Max(max_width, c.ExplicitBounds.Width + c.Margin.Horizontal);
}
max_width = Math.Max(max_width, c.Width + c.Margin.Left + c.Margin.Right);
}
}
// Subtract the width of prior columns, if any.
for (int i = Math.Max(index - colspan, 0); i < index; ++i)
{
max_width -= panel.column_widths[i];
}
// If necessary, increase this column's width.
if (max_width > panel.column_widths[index])
{
max_width -= panel.column_widths[index];
panel.column_widths[index] += max_width;
total_width -= max_width;
}
}
}
}
index = 0;
float total_percent = 0;
// Finally, assign the remaining space to Percent columns, if any.
if (total_width > 0)
{
int percent_width = total_width;
// Find the total percent (not always 100%)
foreach (ColumnStyle cs in col_styles)
{
if (cs.SizeType == SizeType.Percent)
{
total_percent += cs.Width;
}
}
// Divvy up the space..
foreach (ColumnStyle cs in col_styles)
{
if (cs.SizeType == SizeType.Percent)
{
int width_change = (int)(((cs.Width / total_percent) * percent_width)
- panel.column_widths[index]);
if (width_change > 0)
{
panel.column_widths[index] += width_change;
total_width -= width_change;
}
}
index++;
}
}
if (total_width > 0)
{
// Find the last column that isn't an Absolute SizeType, and give it
// all this free space. (Absolute sized columns need to retain their
// absolute width if at all possible!)
int col = col_styles.Count - 1;
for (; col >= 0; --col)
{
if (col_styles[col].SizeType != SizeType.Absolute)
{
break;
}
}
if (col < 0)
{
col = col_styles.Count - 1;
}
panel.column_widths[col] += total_width;
}
// Figure up all the row heights
int total_height = parentDisplayRectangle.Height - (border_width * (rows + 1));
index = 0;
// First assign all the Absolute sized rows..
foreach (RowStyle rs in row_styles)
{
if (rs.SizeType == SizeType.Absolute)
{
panel.row_heights[index] = (int)rs.Height;
total_height -= (int)rs.Height;
}
index++;
}
index = 0;
// Next, assign all the AutoSize rows to the height of their tallest
// control. If the table-layout is auto-sized, then make sure that
// no row with Percent styling clips its contents.
// (per http://msdn.microsoft.com/en-us/library/ms171690.aspx)
for (int rowspan = 0; rowspan < max_rowspan; ++rowspan)
{
for (index = rowspan; index < row_styles.Count - rowspan; ++index)
{
RowStyle rs = row_styles[index];
if (rs.SizeType == SizeType.AutoSize ||
(panel.AutoSize && rs.SizeType == SizeType.Percent))
{
int max_height = panel.row_heights[index];
// Find the tallest control in the row
for (int i = 0; i < columns; i++)
{
Control c = panel.actual_positions[i, index - rowspan];
if (c != null && c != dummy_control && c.VisibleInternal)
{
// Skip any controls not being sized in this pass.
if (settings.GetRowSpan(c) != rowspan + 1)
{
continue;
}
// Calculate the maximum control height.
if (c.AutoSize)
{
max_height = Math.Max(max_height, c.PreferredSize.Height + c.Margin.Vertical);
}
else
{
max_height = Math.Max(max_height, c.ExplicitBounds.Height + c.Margin.Vertical);
}
max_height = Math.Max(max_height, c.Height + c.Margin.Top + c.Margin.Bottom);
}
}
// Subtract the height of prior rows, if any.
for (int i = Math.Max(index - rowspan, 0); i < index; ++i)
{
max_height -= panel.row_heights[i];
}
// If necessary, increase this row's height.
if (max_height > panel.row_heights[index])
{
max_height -= panel.row_heights[index];
panel.row_heights[index] += max_height;
total_height -= max_height;
}
}
}
}
index = 0;
total_percent = 0;
// Finally, assign the remaining space to Percent rows, if any.
if (total_height > 0)
{
int percent_height = total_height;
// Find the total percent (not always 100%)
foreach (RowStyle rs in row_styles)
{
if (rs.SizeType == SizeType.Percent)
{
total_percent += rs.Height;
}
}
// Divvy up the space..
foreach (RowStyle rs in row_styles)
{
if (rs.SizeType == SizeType.Percent)
{
int height_change = (int)(((rs.Height / total_percent) * percent_height)
- panel.row_heights[index]);
if (height_change > 0)
{
panel.row_heights[index] += height_change;
total_height -= height_change;
}
}
index++;
}
}
if (total_height > 0)
{
// Find the last row that isn't an Absolute SizeType, and give it
// all this free space. (Absolute sized rows need to retain their
// absolute height if at all possible!)
int row = row_styles.Count - 1;
for (; row >= 0; --row)
{
if (row_styles[row].SizeType != SizeType.Absolute)
{
break;
}
}
if (row < 0)
{
row = row_styles.Count - 1;
}
panel.row_heights[row] += total_height;
}
}
private void CalculateColumnRowSizes(TableLayoutPanel panel, int columns, int rows)
{
TableLayoutSettings settings = panel.LayoutSettings;
panel.column_widths = new int[panel.actual_positions.GetLength(0)];
panel.row_heights = new int[panel.actual_positions.GetLength(1)];
int border_width = TableLayoutPanel.GetCellBorderWidth(panel.CellBorderStyle);
Rectangle parentDisplayRectangle = panel.DisplayRectangle;
TableLayoutColumnStyleCollection col_styles = new TableLayoutColumnStyleCollection(panel);
foreach (ColumnStyle cs in settings.ColumnStyles)
{
col_styles.Add(new ColumnStyle(cs.SizeType, cs.Width));
}
TableLayoutRowStyleCollection row_styles = new TableLayoutRowStyleCollection(panel);
foreach (RowStyle rs in settings.RowStyles)
{
row_styles.Add(new RowStyle(rs.SizeType, rs.Height));
}
// If we have more columns than columnstyles, temporarily add enough columnstyles
if (columns > col_styles.Count)
{
for (int i = col_styles.Count; i < columns; i++)
{
col_styles.Add(new ColumnStyle());
}
}
// Same for rows..
if (rows > row_styles.Count)
{
for (int i = row_styles.Count; i < rows; i++)
{
row_styles.Add(new RowStyle());
}
}
while (row_styles.Count > rows)
{
row_styles.RemoveAt(row_styles.Count - 1);
}
while (col_styles.Count > columns)
{
col_styles.RemoveAt(col_styles.Count - 1);
}
// Figure up all the column widths
int total_width = parentDisplayRectangle.Width - (border_width * (columns + 1));
int index = 0;
// First assign all the Absolute sized columns..
foreach (ColumnStyle cs in col_styles)
{
if (cs.SizeType == SizeType.Absolute)
{
panel.column_widths[index] = (int)cs.Width;
total_width -= (int)cs.Width;
}
index++;
}
index = 0;
// Next, assign all the AutoSize columns..
foreach (ColumnStyle cs in col_styles)
{
if (cs.SizeType == SizeType.AutoSize)
{
int max_width = 0;
// Find the widest control in the column
for (int i = 0; i < rows; i++)
{
Control c = panel.actual_positions[index, i];
if (c != null && c != dummy_control && c.VisibleInternal)
{
if (settings.GetColumnSpan(c) > 1)
{
continue;
}
if (c.AutoSize)
{
max_width = Math.Max(max_width, c.PreferredSize.Width + c.Margin.Horizontal);
}
else
{
max_width = Math.Max(max_width, c.ExplicitBounds.Width + c.Margin.Horizontal);
}
if (c.Width + c.Margin.Left + c.Margin.Right > max_width)
{
max_width = c.Width + c.Margin.Left + c.Margin.Right;
}
}
}
panel.column_widths[index] = max_width;
total_width -= max_width;
}
index++;
}
index = 0;
float total_percent = 0;
// Finally, assign the remaining space to Percent columns..
if (total_width > 0)
{
int percent_width = total_width;
// Find the total percent (not always 100%)
foreach (ColumnStyle cs in col_styles)
{
if (cs.SizeType == SizeType.Percent)
{
total_percent += cs.Width;
}
}
// Divy up the space..
foreach (ColumnStyle cs in col_styles)
{
if (cs.SizeType == SizeType.Percent)
{
panel.column_widths[index] = (int)((cs.Width / total_percent) * percent_width);
total_width -= panel.column_widths[index];
}
index++;
}
}
if (total_width > 0)
{
panel.column_widths[col_styles.Count - 1] += total_width;
}
// Figure up all the row heights
int total_height = parentDisplayRectangle.Height - (border_width * (rows + 1));
index = 0;
// First assign all the Absolute sized rows..
foreach (RowStyle rs in row_styles)
{
if (rs.SizeType == SizeType.Absolute)
{
panel.row_heights[index] = (int)rs.Height;
total_height -= (int)rs.Height;
}
index++;
}
index = 0;
// Next, assign all the AutoSize rows..
foreach (RowStyle rs in row_styles)
{
if (rs.SizeType == SizeType.AutoSize)
{
int max_height = 0;
// Find the tallest control in the row
for (int i = 0; i < columns; i++)
{
Control c = panel.actual_positions[i, index];
if (c != null && c != dummy_control && c.VisibleInternal)
{
if (settings.GetRowSpan(c) > 1)
{
continue;
}
if (c.AutoSize)
{
max_height = Math.Max(max_height, c.PreferredSize.Height + c.Margin.Vertical);
}
else
{
max_height = Math.Max(max_height, c.ExplicitBounds.Height + c.Margin.Vertical);
}
if (c.Height + c.Margin.Top + c.Margin.Bottom > max_height)
{
max_height = c.Height + c.Margin.Top + c.Margin.Bottom;
}
}
}
panel.row_heights[index] = max_height;
total_height -= max_height;
}
index++;
}
index = 0;
total_percent = 0;
// Finally, assign the remaining space to Percent columns..
if (total_height > 0)
{
int percent_height = total_height;
// Find the total percent (not always 100%)
foreach (RowStyle rs in row_styles)
{
if (rs.SizeType == SizeType.Percent)
{
total_percent += rs.Height;
}
}
// Divy up the space..
foreach (RowStyle rs in row_styles)
{
if (rs.SizeType == SizeType.Percent)
{
panel.row_heights[index] = (int)((rs.Height / total_percent) * percent_height);
total_height -= panel.row_heights[index];
}
index++;
}
}
if (total_height > 0)
{
panel.row_heights[row_styles.Count - 1] += total_height;
}
}
private void CalculateColumnRowSizes(TableLayoutPanel panel, Control[,] actual_positions, out int[] column_widths, out int[] row_heights, Size size, bool measureOnly)
{
TableLayoutSettings settings = panel.LayoutSettings;
int columns = actual_positions.GetLength(0);
int rows = actual_positions.GetLength(1);
bool auto_size = panel.AutoSizeInternal && measureOnly;
bool boundBySize = !measureOnly;
column_widths = new int[actual_positions.GetLength(0)];
row_heights = new int[actual_positions.GetLength(1)];
// Calculate the bounded size only if we are in default layout and docked, otherwise calculate unbounded.
if (measureOnly && size.Width > 0)
{
if (panel.Parent != null && panel.Parent.LayoutEngine is DefaultLayout)
{
boundBySize |= panel.Dock == DockStyle.Top || panel.Dock == DockStyle.Bottom || panel.Dock == DockStyle.Fill;
boundBySize |= (panel.Anchor & (AnchorStyles.Left | AnchorStyles.Right)) == (AnchorStyles.Left | AnchorStyles.Right);
}
}
int border_width = TableLayoutPanel.GetCellBorderWidth(panel.CellBorderStyle);
// Find the largest column-span/row-span values.
int max_colspan = 0, max_rowspan = 0;
foreach (Control c in panel.Controls)
{
if (c.VisibleInternal && c != dummy_control)
{
max_colspan = Math.Max(max_colspan, settings.GetColumnSpan(c));
max_rowspan = Math.Max(max_rowspan, settings.GetRowSpan(c));
}
}
// Figure up all the column widths
CalculateColumnWidths(settings, actual_positions, max_colspan, settings.ColumnStyles, auto_size, column_widths, false);
// Calculate available width
int available_width = size.Width - (border_width * (columns + 1));
foreach (int width in column_widths)
{
available_width -= width;
}
// Shrink the table horizontally by shrinking it's columns, if necessary
if (boundBySize && size.Width > 0 && available_width < 0)
{
// Calculate the minimum widths for each column
int[] col_min_widths = new int[column_widths.Length];
CalculateColumnWidths(settings, actual_positions, max_colspan, settings.ColumnStyles, auto_size, col_min_widths, true);
available_width += Shrink(column_widths, col_min_widths, -available_width, max_colspan);
}
// Finally, assign the remaining space to Percent columns, if any.
if (available_width > 0)
{
available_width -= RedistributePercents(available_width, settings.ColumnStyles, column_widths);
}
if (available_width > 0 && column_widths.Length > 0)
{
// Find the last column that isn't an Absolute SizeType, and give it
// all this free space. (Absolute sized columns need to retain their
// absolute width if at all possible!)
int col = Math.Min(settings.ColumnStyles.Count, column_widths.Length) - 1;
for (; col >= 0; --col)
{
if (settings.ColumnStyles[col].SizeType != SizeType.Absolute)
{
break;
}
}
if (col < 0)
{
col = column_widths.Length - 1;
}
column_widths[col] += available_width;
}
// Figure up all the row heights
CalculateRowHeights(settings, actual_positions, max_rowspan, settings.RowStyles, auto_size, column_widths, row_heights);
// Calculate available height
int available_height = size.Height - (border_width * (rows + 1));
foreach (int height in row_heights)
{
available_height -= height;
}
// NOTE: We don't do shrinking here, since there's no space to save.
// Finally, assign the remaining space to Percent rows, if any.
if (available_height > 0)
{
available_height -= RedistributePercents(available_height, settings.RowStyles, row_heights);
}
if (available_height > 0 && row_heights.Length > 0 && !measureOnly)
{
// Find the last row that isn't an Absolute SizeType, and give it
// all this free space. (Absolute sized rows need to retain their
// absolute height if at all possible!)
int row = Math.Min(settings.RowStyles.Count, row_heights.Length) - 1;
for (; row >= 0; --row)
{
if (settings.RowStyles[row].SizeType != SizeType.Absolute)
{
break;
}
}
if (row < 0)
{
row = row_heights.Length - 1;
}
row_heights[row] += available_height;
}
}
private static void CalculateRowHeights(TableLayoutSettings settings, Control[,] actual_positions, int max_rowspan, TableLayoutRowStyleCollection row_styles, bool auto_size, int[] column_widths, int[] row_heights)
{
int columns = actual_positions.GetLength(0);
float max_percent_size = 0;
// First assign all the Absolute sized rows..
int index = 0;
foreach (RowStyle rs in row_styles)
{
if (index >= row_heights.Length)
{
break;
}
if (rs.SizeType == SizeType.Absolute)
{
row_heights[index] = (int)rs.Height;
}
index++;
}
while (index < row_heights.Length)
{
row_heights[index] = 0;
index++;
}
// Next, assign all the AutoSize rows to the height of their tallest
// control. If the table-layout is auto-sized, then make sure that
// no row with Percent styling clips its contents.
// (per http://msdn.microsoft.com/en-us/library/ms171690.aspx)
for (int rowspan = 0; rowspan < max_rowspan; ++rowspan)
{
for (index = rowspan; index < row_heights.Length - rowspan; ++index)
{
RowStyle rs = index < row_styles.Count ? row_styles[index] : default_row_style;
if (rs.SizeType == SizeType.AutoSize || (auto_size && rs.SizeType == SizeType.Percent))
{
int max_height = row_heights[index];
// Find the tallest control in the row
for (int i = 0; i < columns; i++)
{
Control c = actual_positions[i, index - rowspan];
if (c != null && c != dummy_control && c.VisibleInternal)
{
// Skip any controls not being sized in this pass.
if (settings.GetRowSpan(c) != rowspan + 1)
{
continue;
}
int current_width = 0;
int column_span = settings.GetColumnSpan(c);
for (int j = i; j < i + column_span && j < column_widths.Length; j++)
{
current_width += column_widths[j];
}
// Calculate the maximum control height.
max_height = Math.Max(max_height, GetControlSize(c, new Size(current_width - c.Margin.Horizontal, 0)).Height + c.Margin.Vertical);
}
}
if (rs.SizeType == SizeType.Percent)
{
max_percent_size = Math.Max(max_percent_size, max_height / rs.Height);
}
// Subtract the height of prior rows, if any.
for (int i = Math.Max(index - rowspan, 0); i < index; ++i)
{
max_height -= row_heights[i];
}
// If necessary, increase this row's height.
if (max_height > row_heights[index])
{
row_heights[index] = max_height;
}
}
}
}
// Resize the percent columns to match other percent columns relatively.
for (index = 0; index < row_styles.Count && index < row_heights.Length; ++index)
{
RowStyle rs = row_styles[index];
if (rs.SizeType == SizeType.Percent)
{
row_heights[index] = Math.Max(row_heights[index], (int)Math.Ceiling(max_percent_size * rs.Height));
}
}
}
private static void CalculateColumnWidths(TableLayoutSettings settings, Control[,] actual_positions, int max_colspan, TableLayoutColumnStyleCollection col_styles, bool auto_size, int[] column_widths, bool minimum_sizes)
{
Size proposed_size = minimum_sizes ? new Size(1, 0) : Size.Empty;
int rows = actual_positions.GetLength(1);
float max_percent_size = 0;
// First assign all the Absolute sized columns
int index = 0;
foreach (ColumnStyle cs in col_styles)
{
if (index >= column_widths.Length)
{
break;
}
if (cs.SizeType == SizeType.Absolute)
{
column_widths[index] = (int)cs.Width;
}
index++;
}
while (index < column_widths.Length)
{
column_widths[index] = 0;
index++;
}
// Next, assign all the AutoSize columns to the width of their widest
// control. If the table-layout is auto-sized, then make sure that
// no column with Percent styling clips its contents.
// (per http://msdn.microsoft.com/en-us/library/ms171690.aspx)
for (int colspan = 0; colspan < max_colspan; ++colspan)
{
for (index = colspan; index < column_widths.Length - colspan; ++index)
{
ColumnStyle cs = index < col_styles.Count ? col_styles[index] : default_column_style;
if (cs.SizeType == SizeType.AutoSize || (auto_size && cs.SizeType == SizeType.Percent))
{
int max_width = column_widths[index];
// Find the widest control in the column
for (int i = 0; i < rows; i++)
{
Control c = actual_positions[index - colspan, i];
if (c != null && c != dummy_control && c.VisibleInternal)
{
// Skip any controls not being sized in this pass.
if (settings.GetColumnSpan(c) != colspan + 1)
{
continue;
}
// Calculate the maximum control width.
max_width = Math.Max(max_width, GetControlSize(c, proposed_size).Width + c.Margin.Horizontal);
}
}
if (cs.SizeType == SizeType.Percent)
{
max_percent_size = Math.Max(max_percent_size, max_width / cs.Width);
}
// Subtract the width of prior columns, if any.
for (int i = Math.Max(index - colspan, 0); i < index; ++i)
{
max_width -= column_widths[i];
}
// If necessary, increase this column's width.
if (max_width > column_widths[index])
{
column_widths[index] = max_width;
}
}
}
}
for (index = 0; index < col_styles.Count && index < column_widths.Length; ++index)
{
ColumnStyle cs = col_styles[index];
if (cs.SizeType == SizeType.Percent)
{
column_widths[index] = Math.Max(column_widths[index], (int)Math.Ceiling(max_percent_size * cs.Width));
}
}
}
public void TableLayoutSettings_GetColumnSpan_NoSuchControl_ReturnsExpected(TableLayoutSettings settings)
{
var control = new ScrollableControl();
Assert.Equal(1, settings.GetColumnSpan(control));
}
public void TableLayoutSettingsTypeConverter_ConvertFrom_HasStylesAndControls_ReturnsExpected()
{
var converter = new TableLayoutSettingsTypeConverter();
TableLayoutSettings settings = Assert.IsType <TableLayoutSettings>(converter.ConvertFrom(
@"<?xml version=""1.0"" encoding=""utf-16""?>
<TableLayoutSettings>
<Controls>
<Control Name=""simple"" />
<Control Name=""name"" Row=""1"" RowSpan=""2"" Column=""3"" ColumnSpan=""4"" />
<Control Name=""invalidRow"" Row=""abc"" />
<Control Name=""invalidRowSpan"" RowSpan=""abc"" />
<Control Name=""invalidColumn"" Column=""abc"" />
<Control Name=""invalidColumnSpan"" ColumnSpan=""abc"" />
</Controls>
<Columns Styles=""AutoSize,1,Absolute,2.2"" />
<Columns Styles=""AutoSize,1.1#2Percent!1"" />
<Columns Styles=""Percent," + '\u0664' + @""" />
<Rows Styles=""AutoSize,1,Absolute,2"" />
</TableLayoutSettings>"));
Assert.Equal(5, settings.ColumnStyles.Count);
Assert.Equal(SizeType.AutoSize, settings.ColumnStyles[0].SizeType);
Assert.Equal(1, settings.ColumnStyles[0].Width);
Assert.Equal(SizeType.Absolute, settings.ColumnStyles[1].SizeType);
Assert.Equal(2.2f, settings.ColumnStyles[1].Width);
Assert.Equal(SizeType.AutoSize, settings.ColumnStyles[2].SizeType);
Assert.Equal(1.12f, settings.ColumnStyles[2].Width);
Assert.Equal(SizeType.Percent, settings.ColumnStyles[3].SizeType);
Assert.Equal(1, settings.ColumnStyles[3].Width);
Assert.Equal(SizeType.Percent, settings.ColumnStyles[4].SizeType);
Assert.Equal(0, settings.ColumnStyles[4].Width);
Assert.Equal(2, settings.RowStyles.Count);
Assert.Equal(SizeType.AutoSize, settings.RowStyles[0].SizeType);
Assert.Equal(1, settings.RowStyles[0].Height);
Assert.Equal(SizeType.Absolute, settings.RowStyles[1].SizeType);
Assert.Equal(2, settings.RowStyles[1].Height);
Assert.Equal(-1, settings.GetRow("simple"));
Assert.Equal(1, settings.GetRowSpan("simple"));
Assert.Equal(-1, settings.GetColumn("simple"));
Assert.Equal(1, settings.GetColumnSpan("simple"));
Assert.Equal(1, settings.GetRow("name"));
Assert.Equal(2, settings.GetRowSpan("name"));
Assert.Equal(3, settings.GetColumn("name"));
Assert.Equal(4, settings.GetColumnSpan("name"));
Assert.Equal(-1, settings.GetRow("invalidRow"));
Assert.Equal(1, settings.GetRowSpan("invalidRow"));
Assert.Equal(-1, settings.GetColumn("invalidRow"));
Assert.Equal(1, settings.GetColumnSpan("invalidRow"));
Assert.Equal(-1, settings.GetRow("invalidRowSpan"));
Assert.Equal(1, settings.GetRowSpan("invalidRowSpan"));
Assert.Equal(-1, settings.GetColumn("invalidRowSpan"));
Assert.Equal(1, settings.GetColumnSpan("invalidRowSpan"));
Assert.Equal(-1, settings.GetRow("invalidColumn"));
Assert.Equal(1, settings.GetRowSpan("invalidColumn"));
Assert.Equal(-1, settings.GetColumn("invalidColumn"));
Assert.Equal(1, settings.GetColumnSpan("invalidColumn"));
Assert.Equal(-1, settings.GetRow("invalidColumnSpan"));
Assert.Equal(1, settings.GetRowSpan("invalidColumnSpan"));
Assert.Equal(-1, settings.GetColumn("invalidColumnSpan"));
Assert.Equal(1, settings.GetColumnSpan("invalidColumnSpan"));
}
public int GetColumnSpan(object target)
{
return(TableLayoutSettings.GetColumnSpan(target));
}