1 files changed, 116 insertions, 0 deletions
diff --git a/Sources/Shell/OwlWindow.m b/Sources/Shell/OwlWindow.m
new file mode 100644
index 0000000..78ccc56
--- /dev/null
+++ b/Sources/Shell/OwlWindow.m
@@ -0,0 +1,116 @@
+/* This file is part of Owl.
+ *
+ * Copyright © 2019-2021 Sergey Bugaev <bugaevc@gmail.com>
+ *
+ * Owl is free software: you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published
+ * by the Free Software Foundation, either version 3 of the License,
+ * or (at your option) any later version.
+ *
+ * Owl is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with Owl.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#import "OwlWindow.h"
+#import <Cocoa/Cocoa.h>
+
+@implementation OwlWindow
+
++ (NSUInteger) styleMaskWhenDisplayingSSD: (BOOL) displaySSD {
+    if (!displaySSD) {
+        return NSBorderlessWindowMask;
+    }
+    return NSTitledWindowMask | NSClosableWindowMask |
+        NSMiniaturizableWindowMask | NSResizableWindowMask;
+}
+
+- (id) initWithSize: (NSSize) size displaySSD: (BOOL) displaySSD {
+    NSRect contentRect;
+    contentRect.origin = NSMakePoint(500, 500);
+    contentRect.size = size;
+
+    NSUInteger styleMask = [OwlWindow styleMaskWhenDisplayingSSD: displaySSD];
+    self = [super initWithContentRect: contentRect
+                            styleMask: styleMask
+                              backing: NSBackingStoreBuffered
+                                defer: NO];
+
+    [self setOpaque: NO];
+    [self setBackgroundColor: [NSColor clearColor]];
+    [self setReleasedWhenClosed: NO];
+    [self setAcceptsMouseMovedEvents: YES];
+
+    // Does not automatically happen for borderless windows.
+    [NSApp addWindowsItem: self title: @"Window" filename: NO];
+
+    return self;
+}
+
+- (void) setTitle: (NSString *) newTitle {
+    newTitle = [newTitle retain];
+    [_title release];
+    _title = newTitle;
+    [super setTitle: newTitle];
+    [NSApp changeWindowsItem: self title: newTitle filename: NO];
+}
+
+- (void) dealloc {
+    [_title release];
+    [super dealloc];
+}
+
+- (BOOL) displaySSD {
+    return ([self styleMask] & NSTitledWindowMask) != 0;
+}
+
+- (void) setDisplaySSD: (BOOL) displaySSD {
+    [self setStyleMask: [OwlWindow styleMaskWhenDisplayingSSD: displaySSD]];
+    if (_title != nil) {
+        [self setTitle: _title];
+    }
+}
+
+- (IBAction) toggleDisplaySSD: (NSMenuItem *) sender {
+    BOOL displaySSD = ![self displaySSD];
+    [self setDisplaySSD: displaySSD];
+    [sender setState: displaySSD];
+}
+
+- (BOOL) canBecomeKeyWindow {
+    return YES;
+}
+
+- (BOOL) canBecomeMainWindow {
+    return YES;
+}
+
+- (void) runInteractiveMove {
+    NSPoint originalMouseLocation = [NSEvent mouseLocation];
+    NSPoint originalOrigin = [self frame].origin;
+    NSEventMask mask = NSLeftMouseUpMask | NSMouseMovedMask | NSLeftMouseDraggedMask;
+
+    while (YES) {
+        NSEvent *event = [NSApp nextEventMatchingMask: mask
+                                            untilDate: [NSDate distantFuture]
+                                               inMode: NSEventTrackingRunLoopMode
+                                              dequeue: YES];
+
+        if ([event type] == NSLeftMouseUp) {
+            break;
+        }
+
+        NSPoint mouseLocation = [NSEvent mouseLocation];
+
+        NSPoint origin = originalOrigin;
+        origin.x += mouseLocation.x - originalMouseLocation.x;
+        origin.y += mouseLocation.y - originalMouseLocation.y;
+        [self setFrameOrigin: origin];
+    }
+}
+
+@end