How to interpret trackpad pinch gestures to zoom IKImageBrowserView

Posted by Fraser Speirs on Stack Overflow See other posts from Stack Overflow or by Fraser Speirs
Published on 2009-11-27T09:12:35Z Indexed on 2010/05/04 16:28 UTC
Read the original article Hit count: 368

Filed under:

imagekit

|

ikimagebrowserview

|

cocoa

|

macosx

|

mac

I have an IKImageBrowserView that I want to be able to pinch-zoom using a multi-touch trackpad on a recent Mac laptop.

The Cocoa Event Handling Guide, in the section Handling Gesture Events says:

The magnification accessor method returns a floating-point (CGFloat) value representing a factor of magnification

..and goes on to show code that adjusts the size of the view by multiplying height and width by magnification + 1.0.

This doesn't seem to be the right approach for zooming IKImageBrowserView, whose zoomValue property is clamped between 0.0 and 1.0.

So, does anyone know how to interpret the event in -[NSResponder magnifyWithEvent:] to zoom IKImageBrowserView?

© Stack Overflow or respective owner

Related posts about imagekit

Resizing image on upload with django-imagekit

as seen on Stack Overflow - Search for 'Stack Overflow'
Hi, I am using imagekit to handle custom size of uploaded images. While it works fine for creating custom size images with this, I'd like to use imagekit to resize the original image on upload. Is this possible? >>> More
onmouseover with django / imagekit

as seen on Stack Overflow - Search for 'Stack Overflow'
I'm using Imagekit. View.py includes: def pics(request): p = Photo.objects.all() return render_to_response('Shots.html', {'p': p}) The following simple code in the template will generate associated images: {% for p in p %} <img src = "{{ p.display.url }}"> <img… >>> More
How can I recreate the ImageKit Picture Taker?

as seen on Stack Overflow - Search for 'Stack Overflow'
Hi, I'm trying to create a tool for jQuery which crops images. I know there is already a load of already. The difference with the one i'm trying to make is that i'd like it to act like the Picture Taker interface found in many mac applications like iChat and Adium. I'm stuck completly on how to do… >>> More
onmouseover problems with JavaScript (rendered using django and django-imagekit)

as seen on Stack Overflow - Search for 'Stack Overflow'
I'm using Imagekit. View.py includes: def pics(request): p = Photo.objects.all() return render_to_response('Shots.html', {'p': p}) The following simple code in the template will generate associated images: {% for p in p %} <img src = "{{ p.display.url }}"> <img… >>> More
Problem exporting NSOpenGLView pixel data to some image file formats using ImageKit & CGImageDestina

as seen on Stack Overflow - Search for 'Stack Overflow'
I am developing an application to visualise some experimental data. One of its functions is to render the data in an NSOpenGLView subclass, and allow the resulting image to be exported to a file or copied to the clipboard. The view exports the data as an NSImage, generated like this: - (NSImage*)… >>> More

Related posts about ikimagebrowserview

How to interpret trackpad pinch gestures to zoom IKImageBrowserView

as seen on Stack Overflow - Search for 'Stack Overflow'
I have an IKImageBrowserView that I want to be able to pinch-zoom using a multi-touch trackpad on a recent Mac laptop. The Cocoa Event Handling Guide, in the section Handling Gesture Events says: The magnification accessor method returns a floating-point (CGFloat) value representing a factor… >>> More
Delete Drag and Drop Behavior of IKImageBrowserView

as seen on Stack Overflow - Search for 'Stack Overflow'
Hi Everyone: By default (it seems), IKImageBrowserView enables drag and drop to locations in the Finder. I would like to turn off this behavior but am unsure of how to do so. I was thinking that perhaps implementing the NSDraggingDestination protocol and overriding it could solve this, but so far… >>> More
Changing how IKImageBrowserView indicates the drop position

as seen on Stack Overflow - Search for 'Stack Overflow'
I can make a single row IKImageBrowserView by setting the [imageBrowser setContentResizingMask:NSViewWidthSizable]; but in this case while i drag an image inside image browser to rearrange it, the drop place highlights with horizontal line(vertical line expected). how can this be changed? Many… >>> More
When an NSWindow object has a delegate that is a NSWindow subclass, who is responsible to act on received events?

as seen on Stack Overflow - Search for 'Stack Overflow'
So I'm building a program that features the use of the IKImageBrowserView component as a subview in an NSWindow. As a side note, I have a controller object called ImageBrowserController which subclasses NSWindow and is set as the delegate of the NSWindow object of my app. I have sent IKImageBrowserView… >>> More
How do you populate a NSArrayController with CoreData rows programmatically?

as seen on Stack Overflow - Search for 'Stack Overflow'
After several hours/days of searching and diving into example projects i've concluded that I need to just ask. If I bind the assetsView (IKImageBrowserView) directly to an IB instance of NSArrayController everything works just fine. - (void) awakeFromNib { library = [[NSArrayController alloc]… >>> More