/// <summary>
/// Sets the current selected region to a specific region rectangle.
/// </summary>
/// <param name="region">The region boundaries.</param>
public void SetRegion(ThumbnailRegion region)
{
try
{
_ignoreValueChanges = true;
UpdateRegionControls(region);
numX.Enabled = numY.Enabled = numW.Enabled = numH.Enabled = true;
}
finally
{
_ignoreValueChanges = false;
}
OnRegionSet(region);
}
/// <summary>
/// Constructs a ThumbnailRegion from the dialog's current state.
/// </summary>
protected ThumbnailRegion ConstructCurrentRegion()
{
Rectangle bounds = new Rectangle
{
X = (int)numX.Value,
Y = (int)numY.Value,
Width = (int)numW.Value,
Height = (int)numH.Value
};
ThumbnailRegion newRegion = new ThumbnailRegion(bounds, checkRelative.Checked);
return(newRegion);
}
/// <summary>
/// Sets a new thumbnail.
/// </summary>
/// <param name="handle">Handle to the window to clone.</param>
/// <param name="region">Region of the window to clone or null.</param>
public void SetThumbnail(WindowHandle handle, ThumbnailRegion region)
{
try
{
CurrentThumbnailWindowHandle = handle;
ThumbnailPanel.SetThumbnailHandle(handle, region);
//Set aspect ratio (this will resize the form), do not refresh if in fullscreen
SetAspectRatio(ThumbnailPanel.ThumbnailPixelSize, true);
}
catch (Exception ex)
{
ThumbnailError(ex, false, "无法创建缩略图");
ThumbnailPanel.UnsetThumbnail();
}
}
/// <summary>
/// Updates the labels for the region value selectors and the relative mode checkbox.
/// </summary>
private void UpdateRegionControls(ThumbnailRegion region)
{
checkRelative.Checked = region.Relative;
if (region.Relative)
{
Padding p = region.BoundsAsPadding;
numX.Value = p.Left;
numY.Value = p.Top;
numW.Value = p.Right;
numH.Value = p.Bottom;
}
else
{
Rectangle r = region.Bounds;
numX.Value = r.X;
numY.Value = r.Y;
numW.Value = r.Width;
numH.Value = r.Height;
}
UpdateRegionLabels();
}
void ThumbnailPanel_RegionDrawn(object sender, ThumbnailRegion region) => SetRegion(region);
protected virtual void OnRegionSet(ThumbnailRegion region) => ParentMainForm.SelectedThumbnailRegion = region;//Forward region to thumbnail