First Commit

libui-ng/darwin/group.m

@@ -0,0 +1,194 @@
+// 14 august 2015
+#import "uipriv_darwin.h"
+
+struct uiGroup {
+	uiDarwinControl c;
+	NSBox *box;
+	uiControl *child;
+	NSLayoutPriority oldHorzHuggingPri;
+	NSLayoutPriority oldVertHuggingPri;
+	int margined;
+	uiprivSingleChildConstraints constraints;
+	NSLayoutPriority horzHuggingPri;
+	NSLayoutPriority vertHuggingPri;
+};
+
+static void removeConstraints(uiGroup *g)
+{
+	// set to contentView instead of to the box itself, otherwise we get clipping underneath the label
+	uiprivSingleChildConstraintsRemove(&(g->constraints), [g->box contentView]);
+}
+
+static void uiGroupDestroy(uiControl *c)
+{
+	uiGroup *g = uiGroup(c);
+
+	removeConstraints(g);
+	if (g->child != NULL) {
+		uiControlSetParent(g->child, NULL);
+		uiDarwinControlSetSuperview(uiDarwinControl(g->child), nil);
+		uiControlDestroy(g->child);
+	}
+	[g->box release];
+	uiFreeControl(uiControl(g));
+}
+
+uiDarwinControlDefaultHandle(uiGroup, box)
+uiDarwinControlDefaultParent(uiGroup, box)
+uiDarwinControlDefaultSetParent(uiGroup, box)
+uiDarwinControlDefaultToplevel(uiGroup, box)
+uiDarwinControlDefaultVisible(uiGroup, box)
+uiDarwinControlDefaultShow(uiGroup, box)
+uiDarwinControlDefaultHide(uiGroup, box)
+uiDarwinControlDefaultEnabled(uiGroup, box)
+uiDarwinControlDefaultEnable(uiGroup, box)
+uiDarwinControlDefaultDisable(uiGroup, box)
+
+static void uiGroupSyncEnableState(uiDarwinControl *c, int enabled)
+{
+	uiGroup *g = uiGroup(c);
+
+	if (uiDarwinShouldStopSyncEnableState(uiDarwinControl(g), enabled))
+		return;
+	if (g->child != NULL)
+		uiDarwinControlSyncEnableState(uiDarwinControl(g->child), enabled);
+}
+
+uiDarwinControlDefaultSetSuperview(uiGroup, box)
+
+static void groupRelayout(uiGroup *g)
+{
+	NSView *childView;
+
+	removeConstraints(g);
+	if (g->child == NULL)
+		return;
+	childView = (NSView *) uiControlHandle(g->child);
+	uiprivSingleChildConstraintsEstablish(&(g->constraints),
+		[g->box contentView], childView,
+		uiDarwinControlHugsTrailingEdge(uiDarwinControl(g->child)),
+		uiDarwinControlHugsBottom(uiDarwinControl(g->child)),
+		g->margined,
+		@"uiGroup");
+	// needed for some very rare drawing errors...
+	uiprivJiggleViewLayout(g->box);
+}
+
+// TODO rename these since I'm starting to get confused by what they mean by hugging
+BOOL uiGroupHugsTrailingEdge(uiDarwinControl *c)
+{
+	uiGroup *g = uiGroup(c);
+
+	// TODO make a function?
+	return g->horzHuggingPri < NSLayoutPriorityWindowSizeStayPut;
+}
+
+BOOL uiGroupHugsBottom(uiDarwinControl *c)
+{
+	uiGroup *g = uiGroup(c);
+
+	return g->vertHuggingPri < NSLayoutPriorityWindowSizeStayPut;
+}
+
+static void uiGroupChildEdgeHuggingChanged(uiDarwinControl *c)
+{
+	uiGroup *g = uiGroup(c);
+
+	groupRelayout(g);
+}
+
+static NSLayoutPriority uiGroupHuggingPriority(uiDarwinControl *c, NSLayoutConstraintOrientation orientation)
+{
+	uiGroup *g = uiGroup(c);
+
+	if (orientation == NSLayoutConstraintOrientationHorizontal)
+		return g->horzHuggingPri;
+	return g->vertHuggingPri;
+}
+
+static void uiGroupSetHuggingPriority(uiDarwinControl *c, NSLayoutPriority priority, NSLayoutConstraintOrientation orientation)
+{
+	uiGroup *g = uiGroup(c);
+
+	if (orientation == NSLayoutConstraintOrientationHorizontal)
+		g->horzHuggingPri = priority;
+	else
+		g->vertHuggingPri = priority;
+	uiDarwinNotifyEdgeHuggingChanged(uiDarwinControl(g));
+}
+
+static void uiGroupChildVisibilityChanged(uiDarwinControl *c)
+{
+	uiGroup *g = uiGroup(c);
+
+	groupRelayout(g);
+}
+
+char *uiGroupTitle(uiGroup *g)
+{
+	return uiDarwinNSStringToText([g->box title]);
+}
+
+void uiGroupSetTitle(uiGroup *g, const char *title)
+{
+	[g->box setTitle:uiprivToNSString(title)];
+}
+
+void uiGroupSetChild(uiGroup *g, uiControl *child)
+{
+	NSView *childView;
+
+	if (g->child != NULL) {
+		removeConstraints(g);
+		uiDarwinControlSetHuggingPriority(uiDarwinControl(g->child), g->oldHorzHuggingPri, NSLayoutConstraintOrientationHorizontal);
+		uiDarwinControlSetHuggingPriority(uiDarwinControl(g->child), g->oldVertHuggingPri, NSLayoutConstraintOrientationVertical);
+		uiControlSetParent(g->child, NULL);
+		uiDarwinControlSetSuperview(uiDarwinControl(g->child), nil);
+	}
+	g->child = child;
+	if (g->child != NULL) {
+		childView = (NSView *) uiControlHandle(g->child);
+		uiControlSetParent(g->child, uiControl(g));
+		uiDarwinControlSetSuperview(uiDarwinControl(g->child), [g->box contentView]);
+		uiDarwinControlSyncEnableState(uiDarwinControl(g->child), uiControlEnabledToUser(uiControl(g)));
+		// don't hug, just in case we're a stretchy group
+		g->oldHorzHuggingPri = uiDarwinControlHuggingPriority(uiDarwinControl(g->child), NSLayoutConstraintOrientationHorizontal);
+		g->oldVertHuggingPri = uiDarwinControlHuggingPriority(uiDarwinControl(g->child), NSLayoutConstraintOrientationVertical);
+		uiDarwinControlSetHuggingPriority(uiDarwinControl(g->child), NSLayoutPriorityDefaultLow, NSLayoutConstraintOrientationHorizontal);
+		uiDarwinControlSetHuggingPriority(uiDarwinControl(g->child), NSLayoutPriorityDefaultLow, NSLayoutConstraintOrientationVertical);
+	}
+	groupRelayout(g);
+}
+
+int uiGroupMargined(uiGroup *g)
+{
+	return g->margined;
+}
+
+void uiGroupSetMargined(uiGroup *g, int margined)
+{
+	g->margined = margined;
+	uiprivSingleChildConstraintsSetMargined(&(g->constraints), g->margined);
+}
+
+uiGroup *uiNewGroup(const char *title)
+{
+	uiGroup *g;
+
+	uiDarwinNewControl(uiGroup, g);
+
+	g->box = [[NSBox alloc] initWithFrame:NSZeroRect];
+	[g->box setTitle:uiprivToNSString(title)];
+	[g->box setBoxType:NSBoxPrimary];
+	[g->box setBorderType:NSLineBorder];
+	[g->box setTransparent:NO];
+	[g->box setTitlePosition:NSAtTop];
+	// we can't use uiDarwinSetControlFont() because the selector is different
+	[g->box setTitleFont:[NSFont systemFontOfSize:[NSFont systemFontSizeForControlSize:NSSmallControlSize]]];
+
+	// default to low hugging to not hug edges
+	g->horzHuggingPri = NSLayoutPriorityDefaultLow;
+	g->vertHuggingPri = NSLayoutPriorityDefaultLow;
+
+	return g;
+}