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using System;
using System.IO;
using System.CodeDom;
namespace Stetic
{
public enum ImageSource
{
Theme,
Resource,
File
}
public class ImageInfo
{
ImageSource source;
string name;
Gtk.IconSize size;
Gdk.Pixbuf image;
private ImageInfo ()
{
}
public string Label {
get {
if (source == ImageSource.File)
return Path.GetFileName (name);
else
return name;
}
}
public string Name {
get { return name; }
}
public Gtk.IconSize ThemeIconSize {
get { return size; }
}
public ImageSource Source {
get { return source; }
}
public override string ToString ()
{
if (source == ImageSource.Theme)
return "stock:" + name + " " + size;
else if (source == ImageSource.Resource)
return "resource:" + name;
else
return "file:" + name;
}
public static ImageInfo FromResource (string resourceName)
{
ImageInfo info = new ImageInfo ();
info.name = resourceName;
info.source = ImageSource.Resource;
return info;
}
public static ImageInfo FromTheme (string iconId, Gtk.IconSize size)
{
ImageInfo info = new ImageInfo ();
info.name = iconId;
info.size = size;
info.source = ImageSource.Theme;
return info;
}
public static ImageInfo FromFile (string file)
{
ImageInfo info = new ImageInfo ();
info.name = file;
info.source = ImageSource.File;
return info;
}
public static ImageInfo FromString (string str)
{
ImageInfo info = new ImageInfo ();
if (str.StartsWith ("resource:")) {
info.source = ImageSource.Resource;
info.name = str.Substring (9);
} else if (str.StartsWith ("stock:")) {
info.source = ImageSource.Theme;
string[] s = str.Substring (6).Split (' ');
if (s.Length != 2)
return null;
info.name = s[0];
info.size = (Gtk.IconSize) Enum.Parse (typeof(Gtk.IconSize), s[1]);
} else if (str.StartsWith ("file:")) {
info.source = ImageSource.File;
info.name = str.Substring (5);
} else
return null;
return info;
}
public Gdk.Pixbuf GetImage (IProject project)
{
if (image != null)
return image;
switch (source) {
case ImageSource.Resource:
if (project.ResourceProvider == null)
return null;
System.IO.Stream s = project.ResourceProvider.GetResourceStream (name);
if (s == null)
return null;
try {
return image = new Gdk.Pixbuf (s);
} catch {
// Not a valid image
return WidgetUtils.MissingIcon;
}
case ImageSource.Theme:
return image = WidgetUtils.LoadIcon (name, size);
case ImageSource.File:
try {
string file = Path.Combine (project.ImagesRootPath, name);
return image = new Gdk.Pixbuf (file);
} catch {
return WidgetUtils.MissingIcon;
}
}
return null;
}
public Gdk.Pixbuf GetThumbnail (IProject project, int thumbnailSize)
{
Gdk.Pixbuf pix = GetImage (project);
if (pix == null)
return null;
if (pix.Width >= pix.Height && pix.Width > thumbnailSize) {
return ScaleImage (pix, thumbnailSize, thumbnailSize);
} else if (pix.Height > pix.Width && pix.Height > thumbnailSize) {
return ScaleImage (pix, thumbnailSize, thumbnailSize);
}
return pix;
}
public Gdk.Pixbuf GetScaledImage (IProject project, Gtk.IconSize size)
{
int w, h;
Gtk.Icon.SizeLookup (size, out w, out h);
return GetScaledImage (project, w, h);
}
public Gdk.Pixbuf GetScaledImage (IProject project, int width, int height)
{
Gdk.Pixbuf pix = GetImage (project);
if (pix == null)
return null;
else
return ScaleImage (pix, width, height);
}
Gdk.Pixbuf ScaleImage (Gdk.Pixbuf pix, int width, int height)
{
if ((pix.Width - width) > (pix.Height - height)) {
if (pix.Width != width) {
float prop = (float) pix.Height / (float) pix.Width;
return pix.ScaleSimple (width, (int)(width * prop), Gdk.InterpType.Bilinear);
}
} else {
if (pix.Height != height) {
float prop = (float) pix.Width / (float) pix.Height;
return pix.ScaleSimple ((int)(height * prop), height, Gdk.InterpType.Bilinear);
}
}
return pix;
}
public CodeExpression ToCodeExpression (GeneratorContext ctx)
{
switch (source) {
case ImageSource.Resource:
return new CodeMethodInvokeExpression (
new CodeTypeReferenceExpression (new CodeTypeReference (ctx.Options.ImageResourceLoaderClass, CodeTypeReferenceOptions.GlobalReference)),
"LoadFromResource",
new CodePrimitiveExpression (name)
);
case ImageSource.Theme:
return ctx.GenerateLoadPixbuf (name, size);
case ImageSource.File:
return new CodeObjectCreateExpression (
typeof(Gdk.Pixbuf).ToGlobalTypeRef (),
new CodeMethodInvokeExpression (
new CodeTypeReferenceExpression (new CodeTypeReference (typeof(System.IO.Path), CodeTypeReferenceOptions.GlobalReference)),
"Combine",
new CodePropertyReferenceExpression (
new CodePropertyReferenceExpression (
new CodeTypeReferenceExpression (new CodeTypeReference (typeof(AppDomain), CodeTypeReferenceOptions.GlobalReference)),
"CurrentDomain"
),
"BaseDirectory"
),
new CodePrimitiveExpression (name)
)
);
}
return new CodePrimitiveExpression (null);
}
}
}
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