First Commit

libui-ng/darwin/radiobuttons.m

@@ -0,0 +1,207 @@
+// 14 august 2015
+#import "uipriv_darwin.h"
+
+// TODO resizing the controlgallery vertically causes the third button to still resize :|
+
+// In the old days you would use a NSMatrix for this; as of OS X 10.8 this was deprecated and now you need just a bunch of NSButtons with the same superview AND same action method.
+// This is documented on the NSMatrix page, but the rest of the OS X documentation says to still use NSMatrix.
+// NSMatrix has weird quirks anyway...
+
+// LONGTERM 6 units of spacing between buttons, as suggested by Interface Builder?
+
+@interface radioButtonsDelegate : NSObject {
+	uiRadioButtons *libui_r;
+}
+- (id)initWithR:(uiRadioButtons *)r;
+- (IBAction)onClicked:(id)sender;
+@end
+
+struct uiRadioButtons {
+	uiDarwinControl c;
+	NSView *view;
+	NSMutableArray *buttons;
+	NSMutableArray *constraints;
+	NSLayoutConstraint *lastv;
+	radioButtonsDelegate *delegate;
+	void (*onSelected)(uiRadioButtons *, void *);
+	void *onSelectedData;
+};
+
+@implementation radioButtonsDelegate
+
+- (id)initWithR:(uiRadioButtons *)r
+{
+	self = [super init];
+	if (self)
+		self->libui_r = r;
+	return self;
+}
+
+- (IBAction)onClicked:(id)sender
+{
+	uiRadioButtons *r = self->libui_r;
+
+	(*(r->onSelected))(r, r->onSelectedData);
+}
+
+@end
+
+uiDarwinControlAllDefaultsExceptDestroy(uiRadioButtons, view)
+
+static void defaultOnSelected(uiRadioButtons *r, void *data)
+{
+	// do nothing
+}
+
+static void uiRadioButtonsDestroy(uiControl *c)
+{
+	uiRadioButtons *r = uiRadioButtons(c);
+	NSButton *b;
+
+	// drop the constraints
+	[r->view removeConstraints:r->constraints];
+	[r->constraints release];
+	if (r->lastv != nil)
+		[r->lastv release];
+	// destroy the buttons
+	for (b in r->buttons) {
+		[b setTarget:nil];
+		[b removeFromSuperview];
+	}
+	[r->buttons release];
+	// destroy the delegate
+	[r->delegate release];
+	// and destroy ourselves
+	[r->view release];
+	uiFreeControl(uiControl(r));
+}
+
+static NSButton *buttonAt(uiRadioButtons *r, int n)
+{
+	return (NSButton *) [r->buttons objectAtIndex:n];
+}
+
+void uiRadioButtonsAppend(uiRadioButtons *r, const char *text)
+{
+	NSButton *b, *b2;
+	NSLayoutConstraint *constraint;
+
+	b = [[NSButton alloc] initWithFrame:NSZeroRect];
+	[b setTitle:uiprivToNSString(text)];
+	[b setButtonType:NSRadioButton];
+	// doesn't seem to have an associated bezel style
+	[b setBordered:NO];
+	[b setTransparent:NO];
+	uiDarwinSetControlFont(b, NSRegularControlSize);
+	[b setTranslatesAutoresizingMaskIntoConstraints:NO];
+
+	[b setTarget:r->delegate];
+	[b setAction:@selector(onClicked:)];
+
+	[r->buttons addObject:b];
+	[r->view addSubview:b];
+
+	// pin horizontally to the edges of the superview
+	constraint = uiprivMkConstraint(b, NSLayoutAttributeLeading,
+		NSLayoutRelationEqual,
+		r->view, NSLayoutAttributeLeading,
+		1, 0,
+		@"uiRadioButtons button leading constraint");
+	[r->view addConstraint:constraint];
+	[r->constraints addObject:constraint];
+	constraint = uiprivMkConstraint(b, NSLayoutAttributeTrailing,
+		NSLayoutRelationEqual,
+		r->view, NSLayoutAttributeTrailing,
+		1, 0,
+		@"uiRadioButtons button trailing constraint");
+	[r->view addConstraint:constraint];
+	[r->constraints addObject:constraint];
+
+	// if this is the first view, pin it to the top
+	// otherwise pin to the bottom of the last
+	if ([r->buttons count] == 1)
+		constraint = uiprivMkConstraint(b, NSLayoutAttributeTop,
+			NSLayoutRelationEqual,
+			r->view, NSLayoutAttributeTop,
+			1, 0,
+			@"uiRadioButtons first button top constraint");
+	else {
+		b2 = buttonAt(r, [r->buttons count] - 2);
+		constraint = uiprivMkConstraint(b, NSLayoutAttributeTop,
+			NSLayoutRelationEqual,
+			b2, NSLayoutAttributeBottom,
+			1, 0,
+			@"uiRadioButtons non-first button top constraint");
+	}
+	[r->view addConstraint:constraint];
+	[r->constraints addObject:constraint];
+
+	// if there is a previous bottom constraint, remove it
+	if (r->lastv != nil) {
+		[r->view removeConstraint:r->lastv];
+		[r->constraints removeObject:r->lastv];
+		[r->lastv release];
+	}
+
+	// and make the new bottom constraint
+	r->lastv = uiprivMkConstraint(b, NSLayoutAttributeBottom,
+		NSLayoutRelationEqual,
+		r->view, NSLayoutAttributeBottom,
+		1, 0,
+		@"uiRadioButtons last button bottom constraint");
+	[r->view addConstraint:r->lastv];
+	[r->constraints addObject:r->lastv];
+	[r->lastv retain];
+}
+
+int uiRadioButtonsSelected(uiRadioButtons *r)
+{
+	NSButton *b;
+	NSUInteger i;
+
+	for (i = 0; i < [r->buttons count]; i++) {
+		b = (NSButton *) [r->buttons objectAtIndex:i];
+		if ([b state] == NSOnState)
+			return i;
+	}
+	return -1;
+}
+
+void uiRadioButtonsSetSelected(uiRadioButtons *r, int n)
+{
+	NSButton *b;
+	NSInteger state;
+
+	state = NSOnState;
+	if (n == -1) {
+		n = uiRadioButtonsSelected(r);
+		if (n == -1)		// from nothing to nothing; do nothing
+			return;
+		state = NSOffState;
+	}
+	b = (NSButton *) [r->buttons objectAtIndex:n];
+	[b setState:state];
+}
+
+void uiRadioButtonsOnSelected(uiRadioButtons *r, void (*f)(uiRadioButtons *, void *), void *data)
+{
+	r->onSelected = f;
+	r->onSelectedData = data;
+}
+
+uiRadioButtons *uiNewRadioButtons(void)
+{
+	uiRadioButtons *r;
+
+	uiDarwinNewControl(uiRadioButtons, r);
+
+	r->view = [[NSView alloc] initWithFrame:NSZeroRect];
+	r->buttons = [NSMutableArray new];
+	r->constraints = [NSMutableArray new];
+
+	r->delegate = [[radioButtonsDelegate alloc] initWithR:r];
+
+	uiRadioButtonsOnSelected(r, defaultOnSelected, NULL);
+
+	return r;
+}