/* ----------------------------------------------------------------- */
///
/// UpdateControl
///
/// <summary>
/// DPI の変更に応じてレイアウトを更新します。
/// </summary>
///
/// <param name="src">更新対象となるコントロール</param>
/// <param name="olddpi">変更前の DPI</param>
/// <param name="newdpi">変更後の DPI</param>
///
/* ----------------------------------------------------------------- */
public static void UpdateControl(this IDpiAwarable src, double olddpi, double newdpi)
{
if (olddpi > 1.0 && src is IControl control)
{
var ratio = newdpi / olddpi;
var x = (int)(control.Location.X * ratio);
var y = (int)(control.Location.Y * ratio);
control.Location = new Point(x, y);
}
UpdateLayout(src, olddpi, newdpi);
}
/* ----------------------------------------------------------------- */
///
/// UpdateDpi
///
/// <summary>
/// DPI の変更に応じてレイアウトを更新します。
/// </summary>
///
/// <param name="src">更新対象となるコントロール</param>
/// <param name="before">変更前の DPI</param>
/// <param name="after">変更後の DPI</param>
///
/* ----------------------------------------------------------------- */
public static void UpdateDpi(this IDpiAwarable src, double before, double after)
{
if (before > 1.0 && src is IControl control)
{
var ratio = after / before;
if (!(control is IForm))
{
UpdateLocation(control, ratio);
}
UpdateLayout(control, ratio);
}
}
/* ----------------------------------------------------------------- */
///
/// UpdateLayout
///
/// <summary>
/// DPI の変更に応じてレイアウトを更新します。
/// </summary>
///
/* ----------------------------------------------------------------- */
public static void UpdateLayout(IDpiAwarable src, double olddpi, double newdpi)
{
var control = src as IControl;
if (control != null && olddpi > 1.0)
{
var ratio = newdpi / olddpi;
var w = (int)(control.Size.Width * ratio);
var h = (int)(control.Size.Height * ratio);
control.Size = new Size(w, h);
var ml = (int)(control.Margin.Left * ratio);
var mt = (int)(control.Margin.Top * ratio);
var mr = (int)(control.Margin.Right * ratio);
var mb = (int)(control.Margin.Bottom * ratio);
control.Margin = new System.Windows.Forms.Padding(ml, mt, mr, mb);
var pl = (int)(control.Padding.Left * ratio);
var pt = (int)(control.Padding.Top * ratio);
var pr = (int)(control.Padding.Right * ratio);
var pb = (int)(control.Padding.Bottom * ratio);
control.Padding = new System.Windows.Forms.Padding(pl, pt, pr, pb);
if (control.Font != null)
{
var name = control.Font.FontFamily.Name;
var size = (float)(control.Font.Size * ratio);
var unit = control.Font.Unit;
var style = control.Font.Style;
control.Font = new Font(name, size, style, unit);
}
}
if (control is System.Windows.Forms.Control native)
{
foreach (var c in native.Controls)
{
if (c is IDpiAwarable dac)
{
dac.Dpi = control.Dpi;
}
}
}
}
