Split all OS backends into their own folders.

1 files changed, 118 insertions, 0 deletions

diff --git a/new/darwin/parent.m b/new/darwin/parent.m
new file mode 100644
index 0000000..abf0e59
--- /dev/null
+++ b/new/darwin/parent.m
@@ -0,0 +1,118 @@
+// 4 august 2014
+#import "uipriv_darwin.h"
+
+// calling -[className] on the content views of NSWindow, NSTabItem, and NSBox all return NSView, so I'm assuming I just need to override these
+// fornunately:
+// - NSWindow resizing calls -[setFrameSize:] (but not -[setFrame:])
+// - NSTabView resizing calls both -[setFrame:] and -[setFrameSIze:] on the current tab
+// - NSTabView switching tabs calls both -[setFrame:] and -[setFrameSize:] on the new tab
+// so we just override setFrameSize:
+// thanks to mikeash and JtRip in irc.freenode.net/#macdev
+@interface uipParent : NSView {
+// TODO
+@public
+	uiControl *child;
+	intmax_t marginLeft;
+	intmax_t marginTop;
+	intmax_t marginRight;
+	intmax_t marginBottom;
+}
+- (void)uiUpdateNow;
+@end
+
+@implementation uipParent
+
+uiLogObjCClassAllocations
+
+- (void)viewDidMoveToSuperview
+{
+	// we can't just use nil because NSTabView will set page views to nil when they're tabbed away
+	// this means that we have to explicitly move them to the destroyed controls view when we're done with them, and likewise in NSWindow
+	if ([self superview] == destroyedControlsView)
+		if (self->child != NULL) {
+			uiControlDestroy(self->child);
+			self->child = NULL;
+			[self release];
+		}
+	[super viewDidMoveToSuperview];
+}
+
+- (void)setFrameSize:(NSSize)s
+{
+	[super setFrameSize:s];
+	[self uiUpdateNow];
+}
+
+// These are based on measurements from Interface Builder.
+// These seem to be based on Auto Layout constants, but I don't see an API that exposes these...
+// This one is 8 for most pairs of controls that I've tried; the only difference is between two pushbuttons, where it's 12...
+#define macXPadding 8
+// Likewise, this one appears to be 12 for pairs of push buttons...
+#define macYPadding 8
+
+- (void)uiUpdateNow
+{
+	uiSizing d;
+	intmax_t x, y, width, height;
+
+	if (self->child == NULL)
+		return;
+	x = [self bounds].origin.x + self->marginLeft;
+	y = [self bounds].origin.y + self->marginTop;
+	width = [self bounds].size.width - (self->marginLeft + self->marginRight);
+	height = [self bounds].size.height - (self->marginTop + self->marginBottom);
+	d.xPadding = macXPadding;
+	d.yPadding = macYPadding;
+	uiControlResize(self->child, x, y, width, height, &d);
+}
+
+@end
+
+static uintptr_t parentHandle(uiParent *p)
+{
+	uipParent *pp = (uipParent *) (p->Internal);
+
+	return (uintptr_t) pp;
+}
+
+static void parentSetChild(uiParent *p, uiControl *child)
+{
+	uipParent *pp = (uipParent *) (p->Internal);
+
+	pp->child = child;
+	if (pp->child != NULL)
+		uiControlSetParent(child, p);
+}
+
+static void parentSetMargins(uiParent *p, intmax_t left, intmax_t top, intmax_t right, intmax_t bottom)
+{
+	uipParent *pp = (uipParent *) (p->Internal);
+
+	pp->marginLeft = left;
+	pp->marginTop = top;
+	pp->marginRight = right;
+	pp->marginBottom = bottom;
+}
+
+static void parentUpdate(uiParent *p)
+{
+	uipParent *pp = (uipParent *) (p->Internal);
+
+	[pp uiUpdateNow];
+}
+
+uiParent *uiNewParent(uintptr_t osParent)
+{
+	uiParent *p;
+
+	p = uiNew(uiParent);
+	p->Internal = [[uipParent alloc] initWithFrame:NSZeroRect];
+	p->Handle = parentHandle;
+	p->SetChild = parentSetChild;
+	p->SetMargins = parentSetMargins;
+	p->Update = parentUpdate;
+	// don't use osParent; we'll need to call specific selectors to set the parent view
+	// and keep the view alive so we can release it properly later
+	[((uipParent *) (p->Internal)) retain];
+	return p;
+}
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