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/*************************************************************************/
/*  godot_button_view.mm                                                 */
/*************************************************************************/
/*                       This file is part of:                           */
/*                           GODOT ENGINE                                */
/*                      https://godotengine.org                          */
/*************************************************************************/
/* Copyright (c) 2007-2022 Juan Linietsky, Ariel Manzur.                 */
/* Copyright (c) 2014-2022 Godot Engine contributors (cf. AUTHORS.md).   */
/*                                                                       */
/* Permission is hereby granted, free of charge, to any person obtaining */
/* a copy of this software and associated documentation files (the       */
/* "Software"), to deal in the Software without restriction, including   */
/* without limitation the rights to use, copy, modify, merge, publish,   */
/* distribute, sublicense, and/or sell copies of the Software, and to    */
/* permit persons to whom the Software is furnished to do so, subject to */
/* the following conditions:                                             */
/*                                                                       */
/* The above copyright notice and this permission notice shall be        */
/* included in all copies or substantial portions of the Software.       */
/*                                                                       */
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       */
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF    */
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY  */
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,  */
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     */
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
/*************************************************************************/

#include "godot_button_view.h"

@implementation GodotButtonView

- (id)initWithFrame:(NSRect)frame {
	self = [super initWithFrame:frame];

	tracking_area = nil;
	offset = NSMakePoint(8, 8);
	spacing = 20;
	mouse_in_group = false;
	rtl = false;

	return self;
}

- (void)initButtons:(CGFloat)button_spacing offset:(NSPoint)button_offset rtl:(bool)is_rtl {
	spacing = button_spacing;
	rtl = is_rtl;

	NSButton *close_button = [NSWindow standardWindowButton:NSWindowCloseButton forStyleMask:NSWindowStyleMaskTitled];
	[close_button setFrameOrigin:NSMakePoint(rtl ? spacing * 2 : 0, 0)];
	[self addSubview:close_button];

	NSButton *miniaturize_button = [NSWindow standardWindowButton:NSWindowMiniaturizeButton forStyleMask:NSWindowStyleMaskTitled];
	[miniaturize_button setFrameOrigin:NSMakePoint(spacing, 0)];
	[self addSubview:miniaturize_button];

	NSButton *zoom_button = [NSWindow standardWindowButton:NSWindowZoomButton forStyleMask:NSWindowStyleMaskTitled];
	[zoom_button setFrameOrigin:NSMakePoint(rtl ? 0 : spacing * 2, 0)];
	[self addSubview:zoom_button];

	offset.y = button_offset.y - zoom_button.frame.size.height / 2;
	offset.x = button_offset.x - zoom_button.frame.size.width / 2;

	if (rtl) {
		[self setFrameSize:NSMakeSize(close_button.frame.origin.x + close_button.frame.size.width, close_button.frame.size.height)];
	} else {
		[self setFrameSize:NSMakeSize(zoom_button.frame.origin.x + zoom_button.frame.size.width, zoom_button.frame.size.height)];
	}
	[self displayButtons];
}

- (void)viewDidMoveToWindow {
	if (!self.window) {
		return;
	}

	if (rtl) {
		[self setAutoresizingMask:NSViewMinXMargin | NSViewMinYMargin];
		[self setFrameOrigin:NSMakePoint(self.window.frame.size.width - self.frame.size.width - offset.x, self.window.frame.size.height - self.frame.size.height - offset.y)];
	} else {
		[self setAutoresizingMask:NSViewMaxXMargin | NSViewMinYMargin];
		[self setFrameOrigin:NSMakePoint(offset.x, self.window.frame.size.height - self.frame.size.height - offset.y)];
	}
}

- (BOOL)_mouseInGroup:(NSButton *)button {
	return mouse_in_group;
}

- (void)updateTrackingAreas {
	if (tracking_area != nil) {
		[self removeTrackingArea:tracking_area];
	}

	NSTrackingAreaOptions options = NSTrackingMouseEnteredAndExited | NSTrackingActiveAlways | NSTrackingInVisibleRect;
	tracking_area = [[NSTrackingArea alloc] initWithRect:NSZeroRect options:options owner:self userInfo:nil];

	[self addTrackingArea:tracking_area];
}

- (void)mouseEntered:(NSEvent *)event {
	[super mouseEntered:event];

	mouse_in_group = true;
	[self displayButtons];
}

- (void)mouseExited:(NSEvent *)event {
	[super mouseExited:event];

	mouse_in_group = false;
	[self displayButtons];
}

- (void)displayButtons {
	for (NSView *subview in self.subviews) {
		[subview setNeedsDisplay:YES];
	}
}

@end