1 files changed, 79 insertions, 0 deletions
diff --git a/macosx/NSWindow+HBAdditions.m b/macosx/NSWindow+HBAdditions.m
new file mode 100644
index 000000000..2951d7a1f
--- /dev/null
+++ b/macosx/NSWindow+HBAdditions.m
@@ -0,0 +1,79 @@
+//
+//  NSWindow+HBAdditions.m
+//  HandBrake
+//
+//  Created by Damiano Galassi on 25/04/16.
+//
+//
+
+#import "NSWindow+HBAdditions.h"
+
+@implementation NSWindow (HBAdditions)
+
+- (void)HB_resizeToBestSizeForViewSize:(NSSize)viewSize center:(NSPoint)center animate:(BOOL)animateFlag
+{
+    NSSize currentSize = self.contentView.frame.size;
+    NSRect frame = self.frame;
+
+    // Calculate border around content region of the frame
+    int borderX = (int)(frame.size.width - currentSize.width);
+    int borderY = (int)(frame.size.height - currentSize.height);
+
+    // Make sure the frame is smaller than the screen
+    NSSize maxSize = self.screen.visibleFrame.size;
+
+    // if we are not Scale To Screen, put an 10% of visible screen on the window
+    maxSize.width = maxSize.width * 0.90;
+    maxSize.height = maxSize.height * 0.90;
+
+    // Set the new frame size
+    // Add the border to the new frame size so that the content region
+    // of the frame is large enough to accomodate the preview image
+    frame.size.width = viewSize.width + borderX;
+    frame.size.height = viewSize.height + borderY;
+
+    // compare frame to max size of screen
+    if (frame.size.width > maxSize.width)
+    {
+        frame.size.width = maxSize.width;
+    }
+    if (frame.size.height > maxSize.height)
+    {
+        frame.size.height = maxSize.height;
+    }
+
+    // Since upon launch we can open up the preview window if it was open
+    // the last time we quit (and at the size it was) we want to make
+    // sure that upon resize we do not have the window off the screen
+    // So check the origin against the screen origin and adjust if
+    // necessary.
+    NSSize screenSize = self.screen.visibleFrame.size;
+    NSPoint screenOrigin = self.screen.visibleFrame.origin;
+
+    frame.origin.x = center.x - floor(frame.size.width / 2);
+    frame.origin.y = center.y - floor(frame.size.height / 2);
+
+    // our origin is off the screen to the left
+    if (frame.origin.x < screenOrigin.x)
+    {
+        // so shift our origin to the right
+        frame.origin.x = screenOrigin.x;
+    }
+    else if ((frame.origin.x + frame.size.width) > (screenOrigin.x + screenSize.width))
+    {
+        // the right side of the preview is off the screen, so shift to the left
+        frame.origin.x = (screenOrigin.x + screenSize.width) - frame.size.width;
+    }
+
+    [self setFrame:frame display:YES animate:animateFlag];
+}
+
+- (NSPoint)HB_centerPoint
+{
+    NSPoint center = NSMakePoint(floor(self.frame.origin.x + self.frame.size.width / 2),
+                                 floor(self.frame.origin.y + self.frame.size.height / 2));
+    return center;
+}
+
+
+@end