VuoGraphicsView.m

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#import "VuoGraphicsView.h"
 
#import "module.h"
#import "VuoGraphicsLayer.h"
 
#ifdef VUO_COMPILER
VuoModuleMetadata({
    "title" : "VuoGraphicsView",
    "dependencies" : [
        "VuoGraphicsLayer",
    ]
});
#endif
 
@interface VuoGraphicsView ()
@property(retain) NSImage *circleImage; 
@property NSRect circleRect;            
@end
 
@implementation VuoGraphicsView
 
- (instancetype)init
{
    if (self = [super init])
    {
        self.wantsLayer = true;
 
        // Prepare the circle mouse cursor.
        {
            _circleRect = NSMakeRect(0,0,48,48);
            _circleImage = [[NSImage alloc] initWithSize:_circleRect.size];
            [_circleImage lockFocus];
            {
                [[NSColor colorWithDeviceWhite:1 alpha:0.75] setFill];
                [[NSColor colorWithDeviceWhite:0 alpha:0.15] setStroke];
                NSBezierPath *circlePath = [NSBezierPath bezierPathWithOvalInRect:NSInsetRect(_circleRect, 1, 1)];
                [circlePath fill];
                [circlePath stroke];
            }
            [_circleImage unlockFocus];
        }
    }
    return self;
}
 
- (void)viewDidMoveToWindow
{
    if (!self.window)
        return;
 
    _viewport = self.frame;
}
 
- (void)viewDidChangeBackingProperties
{
    VuoGraphicsLayer *l = (VuoGraphicsLayer *)self.layer;
    [l viewDidChangeBackingProperties];
    [l setNeedsDisplay];
}
 
- (void)resetCursorRects
{
    VuoGraphicsWindow *gw = (VuoGraphicsWindow *)self.window;
    VuoCursor cursor = gw.cursor;
    NSCursor *nsCursor = nil;
 
    if (cursor == VuoCursor_None)
    {
        NSImage *im = [[NSImage alloc] initWithSize:NSMakeSize(1,1)];
        nsCursor = [[[NSCursor alloc] initWithImage:im hotSpot:NSMakePoint(0,0)] autorelease];
        [im release];
    }
    else if (cursor == VuoCursor_Pointer)
        nsCursor = [NSCursor arrowCursor];
    else if (cursor == VuoCursor_Crosshair)
        nsCursor = [NSCursor crosshairCursor];
    else if (cursor == VuoCursor_HandOpen)
        nsCursor = [NSCursor openHandCursor];
    else if (cursor == VuoCursor_HandClosed)
        nsCursor = [NSCursor closedHandCursor];
    else if (cursor == VuoCursor_IBeam)
        nsCursor = [NSCursor IBeamCursor];
    else if (cursor == VuoCursor_Circle)
        nsCursor = [[[NSCursor alloc] initWithImage:_circleImage hotSpot:NSMakePoint(NSMidX(_circleRect),NSMidY(_circleRect))] autorelease];
 
    if (nsCursor)
        [self addCursorRect:[self visibleRect] cursor:nsCursor];
}
 
- (BOOL)acceptsFirstResponder
{
    return YES;
}
 
- (BOOL)mouseDownCanMoveWindow
{
    return NO;
}
 
- (void)dealloc
{
    [_circleImage release];
    [super dealloc];
}
 
@end