From: Mikko Rasa <tdb@tdb.fi>
Date: Sun, 16 Jun 2013 20:06:43 +0000 (+0300)
Subject: Add a Stack arrangement
X-Git-Url: http://git.tdb.fi/?p=libs%2Fgltk.git;a=commitdiff_plain;h=d34a75fa019d37c4ea748e93c276a6f24b941b1c

Add a Stack arrangement
---

diff --git a/source/panel.cpp b/source/panel.cpp
index 930a68f..f9ea0d4 100644
--- a/source/panel.cpp
+++ b/source/panel.cpp
@@ -13,6 +13,7 @@
 #include "panel.h"
 #include "part.h"
 #include "row.h"
+#include "stack.h"
 #include "toggle.h"
 #include "vslider.h"
 
@@ -100,6 +101,7 @@ Panel::Loader::Loader(Panel &p, map<string, Widget *> &m):
 	add("list",      &Loader::child<List>);
 	add("panel",     &Loader::panel);
 	add("row",       &Loader::arrangement<Row>);
+	add("stack",     &Loader::arrangement<Stack>);
 	add("toggle",    &Loader::child<Toggle>);
 	add("vslider",   &Loader::child<VSlider>);
 }
diff --git a/source/stack.cpp b/source/stack.cpp
new file mode 100644
index 0000000..b817a3b
--- /dev/null
+++ b/source/stack.cpp
@@ -0,0 +1,28 @@
+#include "stack.h"
+
+namespace Msp {
+namespace GLtk {
+
+Stack::Stack(Layout &l):
+	Arrangement(l)
+{ }
+
+void Stack::process_widget(Widget &wdg, Side side, bool aligned)
+{
+	if(edges[side].aligned && aligned)
+		add_constraint(wdg, get_align_constraint(side), side);
+	edges[side].add(wdg, aligned);
+}
+
+void Stack::finish_widget(Widget &wdg)
+{
+	layout.set_ghost(wdg, true);
+}
+
+
+Stack::Loader::Loader(Stack &s):
+	DataFile::ObjectLoader<Stack>(s)
+{ }
+
+} // namespace GLtk
+} // namespace Msp
diff --git a/source/stack.h b/source/stack.h
new file mode 100644
index 0000000..fa4a442
--- /dev/null
+++ b/source/stack.h
@@ -0,0 +1,34 @@
+#ifndef MSP_GLTK_STACK_H_
+#define MSP_GLTK_STACK_H_
+
+#include <msp/datafile/objectloader.h>
+#include "arrangement.h"
+
+namespace Msp {
+namespace GLtk {
+
+/**
+Arranges widgets on top of one another.  This can be useful in implementing a
+tabbed view where only one tab is visible at a time.
+*/
+class Stack: public Arrangement
+{
+public:
+	class Loader: public DataFile::ObjectLoader<Stack>
+	{
+	public:
+		Loader(Stack &);
+	};
+
+	Stack(Layout &);
+
+private:
+	virtual void process_widget(Widget &, Side, bool);
+	virtual void finish_widget(Widget &);
+	virtual void finish_slot() { }
+};
+
+} // namespace GLtk
+} // namespace Msp
+
+#endif