diff -r e55a17cdabd2 -r 3d3dcc3116d5 GraphicsUtils.m
--- a/GraphicsUtils.m	Thu Mar 20 09:05:58 2008 -0700
+++ b/GraphicsUtils.m	Wed Apr 02 14:45:33 2008 -0700
@@ -11,6 +11,27 @@
 @implementation NSImage (MYUtilities)
 
 
+- (NSBitmapImageRep*) my_bitmapRep
+{
+    NSSize max = {0,0};
+    NSBitmapImageRep *bestRep = nil;
+    for( NSImageRep *rep in self.representations )
+        if( [rep isKindOfClass: [NSBitmapImageRep class]] ) {
+            NSSize size = [rep size];
+            if( size.width > max.width || size.height > max.height ) {
+                bestRep = (NSBitmapImageRep*)rep;
+                max = size;
+            }
+        }
+    if( ! bestRep ) {
+        NSImage *tiffImage = [[NSImage alloc] initWithData:[self TIFFRepresentation]];
+        bestRep = [[tiffImage representations] objectAtIndex:0];
+        [tiffImage autorelease];
+    }
+    return bestRep;
+}
+
+
 - (NSSize) my_sizeOfLargestRep
 {
     NSArray *reps = [self representations];
@@ -51,13 +72,16 @@
 
 - (NSData*) my_JPEGData
 {
-    NSImage *tiffImage = [[NSImage alloc] initWithData:[self TIFFRepresentation]];
-    NSBitmapImageRep *rep = [[tiffImage representations] objectAtIndex:0];
+    return [self my_dataInFormat: NSJPEGFileType quality: 0.75f];
+}
+
+
+- (NSData*) my_dataInFormat: (NSBitmapImageFileType)format quality: (float)quality
+{
+    NSBitmapImageRep *rep = self.my_bitmapRep;
     NSDictionary *props = [NSDictionary dictionaryWithObjectsAndKeys:
-        [NSNumber numberWithFloat: 0.75f], NSImageCompressionFactor, nil];
-    NSData *jpeg = [rep representationUsingType: NSJPEGFileType properties: props];
-    [tiffImage release];
-    return jpeg;
+                           [NSNumber numberWithFloat: quality], NSImageCompressionFactor, nil];
+    return [rep representationUsingType: format properties: props];
 }
 
 
@@ -188,3 +212,32 @@
 }
 
 @end
+
+
+
+NSArray* OpenWindowsWithDelegateClass( Class klass )
+{
+    NSMutableArray *windows = $marray();
+    for( NSWindow *window in [NSApp windows] ) {
+        id delegate = window.delegate;
+        if( (window.isVisible || window.isMiniaturized) && [delegate isKindOfClass: klass] ) 
+            [windows addObject: window];
+    }
+    return windows;
+}    
+
+
+
+NSRect PinRect( NSRect r, NSRect container )
+{
+    // Push r's origin inside container, and limit its size to the container's:
+    r = NSMakeRect(MAX(r.origin.x, container.origin.x),
+                   MAX(r.origin.y, container.origin.y),
+                   MIN(r.size.width, container.size.width),
+                   MIN(r.size.height, container.size.height));
+    // Push r's outside edges into the container:
+    r.origin.x -= MAX(0, NSMaxX(r)-NSMaxX(container));
+    r.origin.y -= MAX(0, NSMaxY(r)-NSMaxY(container));
+    return r;
+    
+}