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backends/platform/ios7/ios7_mouse_controller.mm

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+/* ScummVM - Graphic Adventure Engine
+ *
+ * ScummVM is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * This program 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.
+ *
+ * This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+// Disable symbol overrides so that we can use system headers.
+#define FORBIDDEN_SYMBOL_ALLOW_ALL
+
+#include "backends/platform/ios7/ios7_mouse_controller.h"
+#include "backends/platform/ios7/ios7_video.h"
+#include <GameController/GameController.h>
+
+@implementation MouseController {
+#ifdef __IPHONE_14_0
+	GCMouse *_mouse;
+	CGFloat _dxReminder, _dyReminder;
+#endif
+}
+
+@dynamic view;
+@dynamic isConnected;
+
+- (id)initWithView:(iPhoneView *)view {
+	self = [super initWithView:view];
+
+	if (self) {
+		[[NSNotificationCenter defaultCenter] addObserver:self
+												 selector:@selector(mouseDidConnect:)
+													 name:@"GCMouseDidConnectNotification"
+												   object:nil];
+	}
+
+#ifdef __IPHONE_14_0
+	_dxReminder = 0.0;
+	_dyReminder = 0.0;
+#endif
+	return self;
+}
+
+- (void)mouseDidConnect:(NSNotification *)notification {
+#ifdef __IPHONE_14_0
+	[self setIsConnected:YES];
+	_mouse = (GCMouse*)notification.object;
+
+	_mouse.mouseInput.mouseMovedHandler = ^(GCMouseInput * _Nonnull mouse, float deltaX, float deltaY) {
+		CGFloat scaledDeltaX = deltaX * [[self view] contentScaleFactor] + _dxReminder;
+		CGFloat scaledDeltaY = deltaY * [[self view] contentScaleFactor] + _dyReminder;
+		// Add any reminding delta values to be summed up and get the integer part of the delta
+		int dx = (int)(scaledDeltaX);
+		int dy = (int)(scaledDeltaY);
+		// Save the new reminders
+		_dxReminder = scaledDeltaX - (CGFloat)dx;
+		_dyReminder = scaledDeltaY - (CGFloat)dy;
+
+		[[self view] addEvent:InternalEvent(kInputMouseDelta, -dx, dy)];
+	};
+
+	_mouse.mouseInput.leftButton.valueChangedHandler = ^(GCControllerButtonInput * _Nonnull button, float value, BOOL pressed) {
+		[[self view] addEvent:InternalEvent(pressed ? kInputMouseLeftButtonDown : kInputMouseLeftButtonUp, 0, 0)];
+	};
+
+	_mouse.mouseInput.rightButton.valueChangedHandler = ^(GCControllerButtonInput * _Nonnull button, float value, BOOL pressed) {
+		[[self view] addEvent:InternalEvent(pressed ? kInputMouseRightButtonDown : kInputMouseRightButtonUp, 0, 0)];
+	};
+#endif
+}
+
+@end