From f7f96f4d8bb3855c5d6ee81b319abdcd9ece3d8a Mon Sep 17 00:00:00 2001
From: Pietro Gagliardi <pietro10@mac.com>
Date: Wed, 18 Nov 2015 16:16:29 -0500
Subject: [PATCH] Added an implementation of uiBox.

---
 haiku/GNUmakeinc.mk |   1 +
 haiku/box.cpp       | 145 ++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 146 insertions(+)
 create mode 100644 haiku/box.cpp

diff --git a/haiku/GNUmakeinc.mk b/haiku/GNUmakeinc.mk
index a07580aa..5e57bce5 100644
--- a/haiku/GNUmakeinc.mk
+++ b/haiku/GNUmakeinc.mk
@@ -2,6 +2,7 @@
 
 CXXFILES += \
 	haiku/alloc.cpp \
+	haiku/box.cpp \
 	haiku/control.cpp \
 	haiku/main.cpp \
 	haiku/text.cpp \
diff --git a/haiku/box.cpp b/haiku/box.cpp
new file mode 100644
index 00000000..0b57f9c6
--- /dev/null
+++ b/haiku/box.cpp
@@ -0,0 +1,145 @@
+// 18 november 2015
+#include <vector>
+#include "uipriv_haiku.hpp"
+using namespace std;
+
+struct boxchild {
+	uiControl *c;
+	BAlignment oldalign;
+	bool stretchy;
+	BLayoutItem *item;
+};
+
+struct uiBox {
+	uiHaikuControl c;
+	BGroupLayout *layout;
+	vector<struct boxchild> *controls;
+	int vertical;
+	int padded;
+};
+
+static void onDestroy(uiBox *b);
+
+uiHaikuDefineControlWithOnDestroy(
+	uiBox,								// type name
+	uiBoxType,							// type function
+	layout,								// handle
+	onDestroy(hthis);						// on destroy
+)
+
+static void onDestroy(uiBox *b)
+{
+	struct boxchild bc;
+
+	while (b->controls->size() != 0) {
+		bc = b->controls->back();
+		uiControlSetParent(bc.c, NULL);
+		uiControlDestroy(bc.c);
+		b->controls->pop_back();
+	}
+	delete b->controls;
+}
+
+static void boxContainerUpdateState(uiControl *c)
+{
+	uiBox *b = uiBox(c);
+	struct boxchild bc;
+	uintmax_t i;
+
+	for (i = 0; i < b->controls->size(); i++) {
+		bc = b->controls->at(i);
+		controlUpdateState(bc.c);
+	}
+}
+
+#define isStretchy(bc) bc.stretchy
+
+void uiBoxAppend(uiBox *b, uiControl *c, int stretchy)
+{
+	struct boxchild bc;
+	BView *view;
+	BAlignment alignment;
+	float weight;
+
+	bc.c = c;
+	view = (BView *) uiControlHandle(bc.c);
+	bc.oldalign = view->ExplicitAlignment();
+	bc.stretchy = stretchy != 0;
+
+	alignment.horizontal = B_ALIGN_USE_FULL_WIDTH;
+	alignment.vertical = B_ALIGN_USE_FULL_HEIGHT;
+	weight = 0.0;
+	if (isStretchy(bc))
+		weight = 1.0;
+	else {
+		if (b->vertical)
+			alignment.vertical = B_ALIGN_TOP;
+		else
+			alignment.horizontal = B_ALIGN_LEFT;
+	}
+
+	uiControlSetParent(bc.c, uiControl(b));
+	view->SetExplicitAlignment(alignment);
+	bc.item = b->layout->AddView(view, weight);
+
+	b->controls->push_back(bc);
+}
+
+void uiBoxDelete(uiBox *b, uintmax_t index)
+{
+	struct boxchild bc;
+	BView *view;
+
+	bc = b->controls->back();
+	b->controls->pop_back();
+
+	b->layout->RemoveItem(bc.item);
+	delete bc.item;
+
+	view = (BView *) uiControlHandle(bc.c);
+	view->SetExplicitAlignment(bc.oldalign);
+
+	uiControlSetParent(bc.c, NULL);
+}
+
+int uiBoxPadded(uiBox *b)
+{
+	return b->padded;
+}
+
+void uiBoxSetPadded(uiBox *b, int padded)
+{
+	b->padded = padded;
+	if (b->padded)
+		b->layout->SetSpacing(B_USE_DEFAULT_SPACING);
+	else
+		b->layout->SetSpacing(0);
+}
+
+static uiBox *finishNewBox(orientation o)
+{
+	uiBox *b;
+
+	b = (uiBox *) uiNewControl(uiBoxType());
+
+	b->layout = new BGroupLayout(o, 0);
+
+	b->vertical = o == B_VERTICAL;
+
+	b->controls = new vector<struct boxchild>();
+
+	uiHaikuFinishNewControl(b, uiBox);
+	uiControl(b)->ContainerUpdateState = boxContainerUpdateState;
+
+	return b;
+}
+
+uiBox *uiNewHorizontalBox(void)
+{
+	return finishNewBox(B_HORIZONTAL);
+}
+
+uiBox *uiNewVerticalBox(void)
+{
+	return finishNewBox(B_VERTICAL);
+}