mirror of
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97 lines
3.4 KiB
Objective-C
97 lines
3.4 KiB
Objective-C
//
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// TouchScreen.m
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// Mini vMac for iOS
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//
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// Created by Jesús A. Álvarez on 18/04/2016.
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// Copyright © 2016 namedfork. All rights reserved.
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//
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#import "TouchScreen.h"
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#import "AppDelegate.h"
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#import "ScreenView.h"
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@implementation TouchScreen
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{
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// when using absolute mouse mode, button events are processed before the position is updated
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NSTimeInterval mouseButtonDelay;
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CGPoint previousTouchLoc;
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NSTimeInterval previousTouchTime;
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NSTimeInterval touchTimeThreshold;
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CGFloat touchDistanceThreshold;
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NSMutableSet *currentTouches;
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}
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- (instancetype)initWithFrame:(CGRect)frame {
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if ((self = [super initWithFrame:frame])) {
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mouseButtonDelay = 0.05;
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touchTimeThreshold = 0.25;
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touchDistanceThreshold = 16;
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currentTouches = [NSMutableSet setWithCapacity:4];
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}
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return self;
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}
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- (Point)mouseLocForCGPoint:(CGPoint)point {
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Point mouseLoc;
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CGRect screenBounds = [ScreenView sharedScreenView].screenBounds;
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CGSize screenSize = [ScreenView sharedScreenView].screenSize;
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mouseLoc.h = (point.x - screenBounds.origin.x) * (screenSize.width/screenBounds.size.width);
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mouseLoc.v = (point.y - screenBounds.origin.y) * (screenSize.height/screenBounds.size.height);
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return mouseLoc;
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}
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- (void)mouseDown {
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[[AppDelegate sharedEmulator] setMouseButton:YES];
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}
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- (void)mouseUp {
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[[AppDelegate sharedEmulator] setMouseButton:NO];
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}
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- (CGPoint)effectiveTouchPointForEvent:(UIEvent *)event {
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CGPoint touchLoc = [[event touchesForView:self].anyObject locationInView:self];
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if (event.timestamp - previousTouchTime < touchTimeThreshold &&
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fabs(previousTouchLoc.x - touchLoc.x) < touchDistanceThreshold &&
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fabs(previousTouchLoc.y - touchLoc.y) < touchDistanceThreshold)
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return previousTouchLoc;
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previousTouchLoc = touchLoc;
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previousTouchTime = event.timestamp;
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return touchLoc;
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}
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- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event {
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[currentTouches unionSet:touches];
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if (![AppDelegate sharedEmulator].running) return;
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CGPoint touchLoc = [self effectiveTouchPointForEvent:event];
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Point mouseLoc = [self mouseLocForCGPoint:touchLoc];
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[[AppDelegate sharedEmulator] setMouseX:mouseLoc.h Y:mouseLoc.v];
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[self performSelector:@selector(mouseDown) withObject:nil afterDelay:mouseButtonDelay];
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previousTouchLoc = touchLoc;
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previousTouchTime = event.timestamp;
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}
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- (void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event {
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if (![AppDelegate sharedEmulator].running) return;
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CGPoint touchLoc = [self effectiveTouchPointForEvent:event];
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Point mouseLoc = [self mouseLocForCGPoint:touchLoc];
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[[AppDelegate sharedEmulator] setMouseX:mouseLoc.h Y:mouseLoc.v];
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}
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- (void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event {
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[currentTouches minusSet:touches];
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if (![AppDelegate sharedEmulator].running) return;
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if (currentTouches.count > 0) return;
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CGPoint touchLoc = [self effectiveTouchPointForEvent:event];
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Point mouseLoc = [self mouseLocForCGPoint:touchLoc];
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[[AppDelegate sharedEmulator] setMouseX:mouseLoc.h Y:mouseLoc.v];
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[self performSelector:@selector(mouseUp) withObject:nil afterDelay:mouseButtonDelay];
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previousTouchLoc = touchLoc;
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previousTouchTime = event.timestamp;
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}
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- (void)touchesCancelled:(NSSet *)touches withEvent:(UIEvent *)event {
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[self touchesEnded:touches withEvent:event];
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}
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@end
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