/// <summary>
/// A history item for when text is created, edited, and/or finalized.
/// </summary>
/// <param name="icon">The history item's icon.</param>
/// <param name="text">The history item's title.</param>
/// <param name="passedTextSurface">The stored TextLayer surface.</param>
/// <param name="passedUserSurface">The stored UserLayer surface.</param>
/// <param name="passedTextEngine">The text engine being used.</param>
/// <param name="passedUserLayer">The UserLayer being modified.</param>
public TextHistoryItem(string icon, string text, ImageSurface passedTextSurface,
ImageSurface passedUserSurface, TextEngine passedTextEngine,
UserLayer passedUserLayer) : base(icon, text)
{
userLayer = passedUserLayer;
text_surface_diff = SurfaceDiff.Create(passedTextSurface, userLayer.TextLayer.Layer.Surface, true);
if (text_surface_diff == null)
{
textSurface = passedTextSurface;
}
else
{
(passedTextSurface as IDisposable).Dispose();
}
user_surface_diff = SurfaceDiff.Create(passedUserSurface, userLayer.Surface, true);
if (user_surface_diff == null)
{
userSurface = passedUserSurface;
}
else
{
(passedUserSurface as IDisposable).Dispose();
}
tEngine = passedTextEngine;
textBounds = new Gdk.Rectangle(userLayer.textBounds.X, userLayer.textBounds.Y, userLayer.textBounds.Width, userLayer.textBounds.Height);
}
public SimpleHistoryItem(string icon, string text, ImageSurface oldSurface, int layerIndex) : base(icon, text)
{
layer_index = layerIndex;
surface_diff = SurfaceDiff.Create(oldSurface, PintaCore.Layers[layer_index].Surface);
// If the diff was too big, store the original surface, else, dispose it
if (surface_diff == null)
{
old_surface = oldSurface;
}
else
{
(oldSurface as IDisposable).Dispose();
}
}