I have a class called ModelView which inherits from NSOpenGLView.
When my program runs i attach the ModelView as follows to the main window.
- (void)applicationDidFinishLaunching:(NSNotification *)aNotification {
// Insert code here to initialize your application
ModelView *glView;
NSRect glViewRect = CGRectMake(0.0f, 0.0f, window.frame.size.width, window.frame.size.height);
glView = [[ModelView alloc] initWithFrame: glViewRect];
[[window contentView] addSubview:glView];
}
In my ModelView class i have a reshape function which is firing every time the window resizes
- (void)reshape
{
[super setNeedsDisplay:YES];
[[self openGLContext] update];
NSLog(#"reshap function called");
}
I want to get the main window width so i can resize the ModelView but i cant find how to get the window width from the ModelView class
I am reasonably new to cocoa/objective-c so any help is appreciated
every view has a window property, so [self window] will get the window, and [[[self window] contentView] bounds].size.width will give the width, although you can directly get to the contentView by using [[self superview] bounds].size.width
Related
I have a NSWindowController containing several NSViewController. The windowController displays the view of the first viewController as a subView of the main window.
On a button click the windowController adds the next viewControllers view as subView, adds some layout constraints and animates them so that the first view moves out and the next view moves in. After the animation the first view is removed from its superView.
[nextController setLeftLayoutConstraint:nextLeft];
// ^^^^^^^^^^^^^^^^^^^^^^^ custom category'd property
[containerView addSubview:nextView];
[containerView addConstraints:#[nextWidth, nextHeight, nextTop, nextLeft]];
[NSAnimationContext runAnimationGroup:^(NSAnimationContext *context) {
[context setTimingFunction:[CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseOut]];
[context setDuration:0.5];
[[nextLeft animator] setConstant:[self leftOffset]];
[[[[self currentViewController] view] animator] setAlphaValue:-0.25]; // negative alpha to shift the timing
[[[[self currentViewController] leftLayoutConstraint] animator] setConstant:-NSWidth(containerView.frame)];
// ^^^^^^^^^^^^^^^^^^^^ custom category'd property
} completionHandler:^{
[[[self currentViewController] view] setAlphaValue:1.0];
[[[self currentViewController] view] removeFromSuperview];
[[self currentViewController] removeFromParentViewController];
_currentViewController = nextController;
}];
Now the second view is much taller than the first so it changes the windows hight as well.
Unfortunately this window frame change is not animated and the window pops ugly in the right size.
I tried getting the next views hight first to then animate all constraints or something like this. Unfortunately the views are not in the correct size before the animation is done.
Is there any way to animate the window change as well?
I let my window autoresize to the visible screen. There is no problem in that code.
But the problem lies here I need to add ImageViews to the window and of course they should also be able to resize.
Code to create the ImageViews and to make window fit to current visible
- (void)applicationDidFinishLaunching:(NSNotification *)aNotification
{
// Insert code here to initialize your application
int x,y;
NSInteger rowCounter,gapX,gapY;
rowNumber=5;
rowCounter=0;
gapX=0;
gapY=0;
personNumber=10;
startX=20;
startY=20;
NSRect rect;
NSSize size;
NSScreen *scren=[NSScreen mainScreen];
rect=scren.visibleFrame;
y=rect.size.height;
x=rect.size.width;
NSLog(#"%s%s%d%s%d","screen"," y size=",y," x size=",x);
y=window.frame.size.height;
x=window.frame.size.width;
NSLog(#"%s%s%d%s%d"," window"," y size=",y," x size=",x);
timer1 =[NSTimer scheduledTimerWithTimeInterval:1 target:self selector:#selector(resizeWindow1) userInfo:nil repeats:YES];
rahmen=[[NSMutableArray alloc] initWithCapacity:25];
NSPoint p;
y=rect.size.height;
x=rect.size.width;
size.height=y;
size.width=x;
p.x= rect.origin.x;
p.y= rect.origin.y+y;
[window setContentSize:size];
[window setFrameTopLeftPoint:p];
width =x-(20*(personNumber/2));
width=(width/(personNumber/2))-(20/(personNumber/2));
NSLog(#"%s%ld","\n width: ",(long)width);
high= y-(20*rowNumber);
high=high/rowNumber-(20/rowNumber);
NSLog(#"%s%ld","\n high: ",(long)high);
for (indexRahmen=0; indexRahmen<25; ) {
if (indexRahmen>0 && indexRahmen%(personNumber/2)==0) {
rowCounter=rowCounter+1;
gapX=0;
gapY=gapY+1;
}
else if (indexRahmen%(personNumber/2)!=0){
gapX=gapX+1;
}
if (rowCounter==rowNumber) {
rowCounterr=rowNumber-1;
gapY=gapY-1;
}
rect=NSMakeRect(startX+(width*(indexRahmen%(personNumber/2)))+(gapX*20),(startY+(rowCounter*high)+(gapY*20)),width, high);
NSImageView *imageView=[[NSImageView alloc] initWithFrame:rect];
imageView.image = [NSImage imageNamed:#"umrandung.png"];
[rahmen insertObject:imageView atIndex:indexRahmen];
[window1view.self addSubview:imageView];
NSLog(#"%s%ld","\n IndexZahl: ",(long)indexRahmen);
indexRahmen=indexRahmen+1;
}
}
the resizing action called by timer1 is nearly the same except that:
NSImageView *imageView= [rahmen objectAtIndex:indexRahmen];
imageView.frame= rect;
imageView.image = [NSImage imageNamed:#"umrandung.png"];
[rahmen insertObject:imageView atIndex:indexRahmen];
and that imageView is not added to subview of window1view
and the strange thing that does happen is that the 1. NSImageView disappears but when I check the coordinates they are on the correct spot so I don't know why it disappears.
I found out myself how to fix it.
I used instead of creating the ImageView with:
[rahmen objectAtIndex:indexRahmen];
I used:
for (NSImageView* ImageView in rahmen)
and It works fine with that.
Sadly I don't know the reason why it disappeared with the other method
I am trying to make an overlay window that will allow drawing at the ShieldingWindowLevel, however when the window appears the cursor is still the default pointer. I would like to change it to the crosshairs. Having controller NSCursors before I am baffled why resetCursorRects is not ever called.
I manually create the window as follows (in my AppController class):
- (void)applicationDidFinishLaunching:(NSNotification *)aNotification {
// Create the window
NSRect frame = [[NSScreen mainScreen] frame];
// Provide a small area on the right to move the cursor in-and-out of the window.
frame.size.width = frame.size.width - 20;
self.window = [[NSWindow alloc] initWithContentRect:frame
styleMask:NSBorderlessWindowMask
backing:NSBackingStoreBuffered
defer:NO];
[self.window setAcceptsMouseMovedEvents:YES];
[self.window setOpaque:NO];
[self.window setLevel:CGShieldingWindowLevel()];
[self.window setBackgroundColor:[NSColor colorWithDeviceRed:0.0 green:0.0 blue:1.0 alpha:0.2]];
// Create the subview
ScreenOverlayView *subview = [[ScreenOverlayView alloc] initWithFrame:NSZeroRect];
[[self.window contentView] addSubview:subview];
// Add subview and show window
[self.window setContentView:subview];
[self.window makeFirstResponder:subview];
[self.window orderFrontRegardless];
}
With the following NSView subclass:
#implementation ScreenOverlayView
- (void) resetCursorRects {
[super resetCursorRects];
[self addCursorRect: [self bounds]
cursor: [NSCursor crosshairCursor]];
}
// ...
#end
I created a sample project to show this case and posted it to github, the most interesting files are ScreenOverlayView.m and AppDelegate.m.
I should point out that I have also spent a good deal of time trying to get this working with an NSTrackingArea, as you can see in the sample project. Tracking Area works if the mouse enters the view after it has appeared, but not if it is inside to start with. Using MouseEnter and MouseLeave would be fine if I had some way to set the initial cursor, but it will only change for a split second before changing back.
How can I get resetCursorRects to be invoked -OR- how can I set the cursor when I move it to the superview?
The key is that you really need to create a custom subclass of NSWindow, in order to counteract some of the default behavior that borderless windows (NSBorderlessWindowMask) have.
An updated version of your sample project is at http://www.markdouma.com/developer/full-screen-overlay.zip.
In it, I created a custom MDScreenOverlayWindow class that overrides NSWindow's canBecomeKeyWindow method like below:
// Windows created with NSBorderlessWindowMask normally can't be key,
but we want ours to be
- (BOOL)canBecomeKeyWindow {
return YES;
}
This will allow your view to become key and basically all your other stuff to work properly.
The other thing that may be of note is the drawRect: method. (It looks like you may be coming from iOS). You might want to look into NSBezierPath, as it could potentially simplify some of your drawing code. For example, I believe the drawing code you had could be consolidated into the following:
- (void)drawRect:(NSRect)rect {
// the color should probably be "pre-multiplied" by the alpha
// premultiplied version:
[[NSColor colorWithCalibratedRed:0.8 green:0.0 blue:0.0 alpha:0.8] set];
[NSBezierPath setDefaultLineWidth:2.0];
[NSBezierPath strokeLineFromPoint:currentLocation toPoint:downLocation];
}
This site really is awesome.
I have what is hopefully a simple question this time. I would like to pass any scrolling input from the user (could be wheel, touchpad, etc) to an NSScrollView which contains my own subviews.
At the moment if the user scrolls just on the documentView (outside of my subviews' frames) the scroll works normally but if they scroll while the cursor is over a subview nothing happens. So basically I'd like to have the subview recognise the scroll event and pass it back to the scroll view.
Any help is greatly appreciated.
Cheers.
EDIT:
Here is the code I'm using to add the subviews to the documentView
_milestoneView and _activityView are both NSView subclasses which have a corresponding nib (created with instantiateNibWithOwner and objects hooked up accordingly) they contain a NSTextField, PXListView and some have a NSProgressIndicator.
-(void)useProject:(NSNumber *)projectId
{
[self resetView];
NSRect bounds = [[self view] bounds];
NSRect defaultFrame = NSMakeRect(20, NSMaxY(bounds)-93, NSMaxX(bounds)-20, 50);
//Prepare the milestone view
if (_milestoneView == nil)
_milestoneView = [MilestoneView milestoneViewFromNibWithFrame:defaultFrame withProject:[BCLocalFetch projectForId:projectId]];
[_milestoneView reloadList];
//Prepare the activity view
if (_activityView == nil)
_activityView = [ActivityView activityViewFromNibWithFrame:defaultFrame withProject:[BCLocalFetch projectForId:projectId]];
[self refresh];
}
I then use the refresh method to reposition them as the content sizes vary so I wanted to have a separate method.
-(void)refresh
{
//Position the milestones first
[_milestoneView setFrameOrigin:NSMakePoint(20, NSMaxY([[self view] bounds])-[_milestoneView frame].size.height-60)];
if ([[_milestoneView milestones] count] > 0)
[[self view] addSubview:_milestoneView];
//Now the activity view
[_activityView setFrameOrigin:NSMakePoint(20, [_milestoneView frame].origin.y-[_activityView frame].size.height-20)];
[[self view] addSubview:_activityView];
[self autosizeView];
}
-(void)autosizeView
{
//Resize the view to accommodate all subviews
NSRect oldFrame = [[self view] frame];
CGFloat lastY = [_activityView frame].origin.y;
if (lastY < 0) {
CGFloat newHeight = oldFrame.size.height + (-lastY);
[[self view] setFrameSize:NSMakeSize(oldFrame.size.width, newHeight)];
}
[[NSNotificationCenter defaultCenter] postNotificationName:#"BBContentDidResizeNotification" object:self];
}
Ok so I came back to the issue and finally got it worked out. The implementation was actually quite simple.
I added a property to PXListView to point to the NSScrollView that is to be scrolled.
I then implemented NSResponder's scrollWheel: method like this:
-(void)scrollWheel:(NSEvent *)theEvent
{
//Pass scrolling to the superview
[_scrollHandler scrollWheel:theEvent];
}
And all is well!
I've created an NSScrollView which itself contains a NSClippedView as content view (this is all default, created by IB). Inside the contents view there is the (default) document view.
This NSScrollView has horizontal scroller disabled and vertical enabled and, most importantly auto hide scrollers enabled.
When I add new views (via code, runtime) to the document view the scroller does not unhide automatically, until the moment I vertically resize the window (and which in turn resizes the scrollview as well). 1px is enough. Just the new painting of the window seems enough.
What I am looking for is triggering this by code: so when I add views to the scrollviews' content view I would like the scrollbar to appear.
int numberOfChildViews = 10; //hard coded for example here
int childViewHeight = 80; //same as above
NSRect rect = NSMakeRect(0, 0, [[self.scrollView contentView] bounds].size.width, [numberOfChildViews*childViewHeight);
[[self.scrollView documentView] setFrame:rect];
[[self.scrollView documentView] setBounds:rect]; //just added to make sure
Then I added the custom views to the document view, like:
for (int i=0; i<numberOfChildViews; i++) {
NZBProgressViewController *item = [nzbProgressArray objectAtIndex:i];
int y=i*[[item view] bounds].size.height;
rect= NSMakeRect(0, y, [[scrollView contentView] frame].size.width, [[item view] bounds].size.height);
[[item view] setFrame:rect];
currentPosition++;
}
I am using a FlippedView so the origin will be displayed in left-top, like so:
#interface NSFlippedClipView : NSClipView {
}
#implementation NSFlippedClipView
- (BOOL)isFlipped {
return YES;
}
- (BOOL)isOpaque {
return YES;
}
#end
And added the following code to the awakeFromNib
NSFlippedClipView *documentView = [[NSFlippedClipView alloc] init];
[documentView setAutoresizingMask:NSViewWidthSizable];
[documentView setBackgroundColor:[self.scrollView backgroundColor]];
[self.scrollView setDocumentView:documentView];
[documentView release];
The scrollbars should become visible as soon as the document view is resized to be larger than the current viewport of the scroll view. Are you resizing the document view when you add your subviews to it?
Ahh, it's my own bad. For future reference: if you want to move the origin (0,0) to left-top use a NSView instead of NSClippedView extended class with IsFlipped method overriden to YES.
Thanks irsk for answering.