Web18 apr. 2024 · I just create an app like osx preview app. I use opengl or metalkit to render image. I can make zoom with a center point (0,0) by some matrix, but I can not make zoom with point between two fingers with touchpad like preview app, because I do not know how to create my model matrix. WebDeprecated. Use Merz to draw on screen. A vanilla object that sends all events to a given delegate. All events that a delegate could have can be used:
Update double-tap recognition to use smart Magnify With Event …
WebThis has been driving me crazy.. I have a large image, and need to have a view that is both zoomable, and scrollable (ideally it should also be able to rotate, but I've given up on that part). Sinc... Web13 sep. 2016 · To handle an event for a specific gesture—such as a rotation, pinching, or swipe movement—implement in your custom view the appropriate NSResponder method—that is, rotateWithEvent:, magnifyWithEvent:, or swipeWithEvent:. Unlike the procedure for handling multitouch events, your custom view does not have to “opt-in”. cacanski glasnik
Cocoa and Objective-C: Handling events Packt Hub
Web6 sep. 2024 · This prevents us from having to // re-establish the connection to the service manager many times per second // when handling draggingUpdated: messages. nsIDragService * mDragService; NSOpenGLContext * mGLContext; // Simple gestures support // // mGestureState is used to detect when Cocoa has called both // … Webmagnify With Event: Informs the receiver that the user has begun a pinch gesture. macOS 10.5+ Declaration - (void) magnifyWithEvent: (NSEvent *) event; Parameters event. An … WebThis page requires JavaScript. Please turn on JavaScript in your browser and refresh the page to view its content. cacanski glas novine