/// <summary>
/// Store layer metadata and image data.
/// </summary>
public static void StoreLayer(
BitmapLayerInfo layerInfo,
PhotoshopFile.Layer psdLayer,
PsdSaveConfigToken psdToken)
{
var layer = layerInfo.Layer;
// Set layer metadata
psdLayer.Name = layerInfo.Name;
psdLayer.Rect = FindImageRectangle(layer.Surface);
psdLayer.Opacity = layer.Opacity;
psdLayer.Masks = new MaskInfo();
psdLayer.BlendingRangesData = new BlendingRanges(psdLayer);
// Store channel metadata
int layerSize = psdLayer.Rect.Width * psdLayer.Rect.Height;
for (int i = -1; i < 3; i++)
{
var ch = new Channel((short)i, psdLayer);
ch.ImageCompression = psdToken.RleCompress ? ImageCompression.Rle : ImageCompression.Raw;
ch.ImageData = new byte[layerSize];
psdLayer.Channels.Add(ch);
}
psdLayer.BlendModeKey = layer.BlendMode.ToPsdBlendMode();
psdLayer.Visible = layer.Visible;
// Create folders/groups before actual image data will be saved.
if (psdToken.SaveLayers && !layerInfo.RenderAsRegularLayer)
{
if (layerInfo.IsGroupStart)
{
var status = layer.Visible ? LayerSectionType.OpenFolder : LayerSectionType.ClosedFolder;
psdLayer.AdditionalInfo.Add(new LayerSectionInfo(status));
psdLayer.Name = layerInfo.Name;
psdLayer.Visible = true;
}
else if (layerInfo.IsGroupEnd)
{
// End of the group
psdLayer.Opacity = 255;
psdLayer.BlendModeKey = PsdBlendMode.PassThrough;
psdLayer.Name = "</Layer group>";
psdLayer.AdditionalInfo.Add(new LayerSectionInfo(LayerSectionType.SectionDivider));
}
return;
}
// Store and compress channel image data
var channelsArray = psdLayer.Channels.ToIdArray();
StoreLayerImage(channelsArray, psdLayer.AlphaChannel, layer.Surface, psdLayer.Rect);
}
/// <summary>
/// Prepare Paint.NET's flat layer list to be exported as Photoshop layers.
/// Indicate where layer sections begin and end and create missing layers while user can break the structure.
/// </summary>
private static IEnumerable <BitmapLayerInfo> PrepareLayers(IEnumerable <BitmapLayer> paintLayers, bool saveGroupLayers)
{
var toReturn = new List <BitmapLayerInfo>();
var layer = paintLayers.FirstOrDefault();
var openedGroupsCount = 0;
var reversed = paintLayers.Reverse();
foreach (var paintLayer in reversed)
{
var layerInfo = new BitmapLayerInfo();
layerInfo.Name = paintLayer.Name;
layerInfo.Layer = paintLayer;
// Render as default image
layerInfo.RenderAsRegularLayer = true;
var isGroupLayerStart = false;
var layerGroup = string.Empty;
if (saveGroupLayers && CheckIsGroupLayer(paintLayer, out isGroupLayerStart, out layerGroup))
{
layerInfo.Name = layerGroup ?? "Layer";
layerInfo.IsGroupStart = isGroupLayerStart;
layerInfo.IsGroupEnd = !isGroupLayerStart;
layerInfo.RenderAsRegularLayer = false;
if (isGroupLayerStart)
{
openedGroupsCount++;
}
else if (layerInfo.IsGroupEnd)
{
if (openedGroupsCount == 0)
{
// Structure is broken. Close layer tag is before any other start.
// In this case we should render group as regular layer.
layerInfo.RenderAsRegularLayer = true;
}
else
{
openedGroupsCount--;
}
}
}
toReturn.Add(layerInfo);
}
toReturn.Reverse();
// Add missing close groups.
if (openedGroupsCount > 0)
{
for (int count = 0; count < openedGroupsCount; count++)
{
var emptyLayer = new BitmapLayer(layer.Width, layer.Height);
var layerInfo = new BitmapLayerInfo()
{
Layer = emptyLayer, IsGroupEnd = true, Name = "Layer end"
};
toReturn.Insert(0, layerInfo);
}
}
return(toReturn);
}
