private void UpdateSelectedIndex(int newValue)
{
MgRadioButton radioButton = null;
if (SelectedIndex != newValue)
{
Control.ControlCollection c = (Control.ControlCollection)(Controls);
if (c.Count > 0)
{
//unregister & register the CheckedChanged event of radioButton & unCheck the old selected radioButton.
if (SelectedIndex > -1)
{
radioButton = (MgRadioButton)Controls[SelectedIndex];
radioButton.CheckedChanged -= MgRadioButton_CheckedChanged;
radioButton.Checked = false;
radioButton.CheckedChanged += MgRadioButton_CheckedChanged;
}
//unregister & register the CheckedChanged event of radioButton & Check the new selected radioButton.
if (newValue > -1)
{
radioButton = (MgRadioButton)Controls[newValue];
radioButton.CheckedChanged -= MgRadioButton_CheckedChanged;
radioButton.Checked = true;
radioButton.CheckedChanged += MgRadioButton_CheckedChanged;
}
}
selectedIndex = newValue;
OnSelectedIndexChanged(EventArgs.Empty);
}
}
/// <summary>
/// </summary>
/// <param name = "container"></param>
/// <param name = "layoutEventArgs"></param>
/// <returns></returns>
public override bool Layout(object container, LayoutEventArgs layoutEventArgs)
{
Control parent = container as Control;
if (parent.Controls.Count == 0)
{
return(false);
}
Size clientRect = ((Panel)container).Size;
int radioLineSeperator = 0;
int radioColSeperator = 0;
MgRadioButton radioButton = (MgRadioButton)parent.Controls[0];
Boolean isAppearanceButton = (radioButton.Appearance == Appearance.Button);
int radionInColumn = getCountOfButtonsInColumn(parent.Controls.Count, isAppearanceButton);
Rectangle radioRect = new Rectangle(0, 0, 0, 0);
if (parent.Controls.Count == 1)
{
radioButton.SetBounds(0, 0, clientRect.Width, clientRect.Height);
}
else
{
int i = 0;
int width = 0;
int height = 0;
int numColumns = _numColumns;
if (isAppearanceButton)
{
numColumns = Math.Min(numColumns, parent.Controls.Count);
width = radioRect.Width = clientRect.Width / numColumns;
height = radioRect.Height = clientRect.Height / radionInColumn;
// Fixed defect #:137271: radioColSeperator & radioLineSeperator will be 0 for button
radioColSeperator = 0;
radioLineSeperator = 0;
radioRect.X = radioLineSeperator;
radioRect.Y = radioColSeperator;
}
else
{
MgRadioPanel mgRadioPanel = container as MgRadioPanel;
if (radioButton.Image != null)
{
// Measure the radio button image size.
width = radioButton.Image.Width;
height = radioButton.Image.Height;
}
else
{
//find the maximun string size in the composite
foreach (Control c in parent.Controls)
{
MgRadioButton mgRadioButton = (MgRadioButton)c;
Size textExt = Utils.GetTextExt(mgRadioPanel.Font, mgRadioButton.TextToDisplay, c);
width = Math.Max(width, textExt.Width);
height = Math.Max(height, textExt.Height);
}
}
// add extras
width = (int)((float)(RADIO_RECT_DX + RADIO_TEXT_SPACE + width + 1) * Utils.GetDpiScaleRatioX(parent));
height = (int)((float)(Math.Max(RADIO_RECT_DY, height + 2) * Utils.GetDpiScaleRatioY(parent)));
PointF fm = Utils.GetFontMetricsByFont(mgRadioPanel, (mgRadioPanel).Font);
radioLineSeperator = (int)fm.Y / 2;
height = Math.Max(height, (clientRect.Height - (radionInColumn * radioLineSeperator)) / radionInColumn);
radioColSeperator = (int)Math.Max((clientRect.Width - (numColumns * width)) / (numColumns + 1), fm.X / 2);
// Use DisplayRectangle so that parent.Padding is honored.
#if !PocketPC
Rectangle parentDisplayRectangle = parent.DisplayRectangle;
#else
Rectangle parentDisplayRectangle = parent.Bounds;
parentDisplayRectangle.X = parentDisplayRectangle.Y = 0;
#endif
Point nextControlLocation = parentDisplayRectangle.Location;
// calculate the bounds of the first button in the first column
radioRect.Y = radioLineSeperator;
radioRect.Height = height;
// TODO: Hebrew
if (mgRadioPanel.RightToLeft == RightToLeft.Yes)
{
radioRect.X = mgRadioPanel.Width - radioColSeperator - width;
}
else
{
radioRect.X = radioColSeperator;
}
radioRect.Width = width;
}
foreach (Control c in parent.Controls)
{
radioButton = (MgRadioButton)c;
{
// checks if skip to another column is needed
if (numColumns > 1 && i > 0 && (i % radionInColumn) == 0)
{
// TODO: Hebrew
MgRadioPanel mgRadioPanel = container as MgRadioPanel;
if (mgRadioPanel.RightToLeft == RightToLeft.Yes)
{
radioRect.X -= width + radioColSeperator;
}
else
{
radioRect.X += width + radioColSeperator;
}
radioRect.Y = radioLineSeperator;
}
}
if (radioRect.X + radioRect.Width > clientRect.Width)
{
radioRect.Width = clientRect.Width - radioRect.X;
}
if (radioRect.Y + radioRect.Height > clientRect.Height)
{
radioRect.Height = clientRect.Height - radioRect.Y;
}
// set the radio bounds
radioButton.SetBounds(radioRect.X, radioRect.Y, radioRect.Width, radioRect.Height);
// sets the next radio location
radioRect.Y += radioLineSeperator + height;
i++;
}
}
return(false);
}