X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;f=source%2Flayout.cpp;h=5ebb55ccf4f8822de2423427d4c795c8d906ecf8;hb=fea22d7bdfae9e2cb70a6c0c1a3f85da531e2de2;hp=c616ff6fc7caff9833070cf1c30e7c7710e20ad9;hpb=8eeb6ee5d40c21150839e24996cc3e9ef308374d;p=libs%2Fgltk.git

diff --git a/source/layout.cpp b/source/layout.cpp
index c616ff6..5ebb55c 100644
--- a/source/layout.cpp
+++ b/source/layout.cpp
@@ -213,7 +213,7 @@ void Layout::update_slot_indices()
 	n_active_slots = 0;
 	for(list<Slot *>::iterator i=slots.begin(); i!=slots.end(); ++i)
 	{
-		if((*i)->widget.is_visible())
+		if((*i)->widget.is_visible() || (*i)->ghost)
 			(*i)->index = n_active_slots++;
 		else
 			(*i)->index = -1;
@@ -295,6 +295,19 @@ void Layout::set_expand(Widget &wdg, bool h, bool v)
 	update();
 }
 
+void Layout::set_ghost(Widget &wdg, bool g)
+{
+	Slot &slot = get_slot_for_widget(wdg);
+
+	slot.ghost = g;
+
+	if(!wdg.is_visible())
+	{
+		update_slot_indices();
+		update();
+	}
+}
+
 void Layout::update()
 {
 	solve_constraints(HORIZONTAL, UPDATE);
@@ -304,12 +317,13 @@ void Layout::update()
 		(*i)->widget.set_geometry((*i)->geom);
 }
 
-void Layout::autosize()
+void Layout::autosize(Geometry &geom)
 {
 	solve_constraints(HORIZONTAL, AUTOSIZE);
 	solve_constraints(VERTICAL, AUTOSIZE);
 
-	container->set_size(autosize_geom.w, autosize_geom.h);
+	geom.w = max(geom.w, autosize_geom.w);
+	geom.h = max(geom.h, autosize_geom.h);
 }
 
 void Layout::solve_constraints(int dir, SolveMode mode)
@@ -326,6 +340,7 @@ void Layout::solve_constraints(int dir, SolveMode mode)
 	remaining three are slack columns; see below for their purposes. */
 	LinearProgram linprog(n_active_slots*5+n_slack_constraints[dir]+1);
 	float weight = slots.size();
+	unsigned k = n_active_slots*5;
 	for(list<Slot *>::iterator i=slots.begin(); i!=slots.end(); ++i)
 	{
 		if((*i)->index<0)
@@ -382,7 +397,6 @@ void Layout::solve_constraints(int dir, SolveMode mode)
 
 		/* Add rows for user-defined constraints.  Constraints are always added
 		in pairs, so it's only necessary to create a row for one half. */
-		unsigned k = n_active_slots*5;
 		for(list<Constraint>::iterator j=(*i)->constraints.begin(); j!=(*i)->constraints.end(); ++j)
 			if(j->target.index>(*i)->index && (j->type&1)==dir)
 			{
@@ -444,7 +458,8 @@ Layout::Packing::Packing():
 Layout::Slot::Slot(Layout &l, Widget &w):
 	layout(l),
 	index(0),
-	widget(w)
+	widget(w),
+	ghost(false)
 {
 	vert_pack.gravity = 1;
 	widget.signal_autosize_changed.connect(sigc::mem_fun(this, &Slot::autosize_changed));
@@ -458,7 +473,7 @@ void Layout::Slot::autosize_changed()
 	widget.autosize();
 	autosize_geom = widget.get_geometry();
 
-	if(!widget.is_visible())
+	if(!widget.is_visible() && !ghost)
 		return;
 
 	// If the widget fits in the area it had, just leave it there.
@@ -474,7 +489,7 @@ void Layout::Slot::autosize_changed()
 void Layout::Slot::visibility_changed(bool v)
 {
 	layout.update_slot_indices();
-	if(v)
+	if(v || ghost)
 	{
 		layout.container->signal_autosize_changed.emit();
 		layout.update();
@@ -530,6 +545,7 @@ Layout::WidgetLoader::WidgetLoader(Layout &l, Widget &w, const Layout::Loader::W
 {
 	add("constraint", &WidgetLoader::constraint);
 	add("expand",     &WidgetLoader::expand);
+	add("ghost",      &WidgetLoader::ghost);
 	add("gravity",    &WidgetLoader::gravity);
 }
 
@@ -544,6 +560,11 @@ void Layout::WidgetLoader::expand(bool h, bool v)
 	layout.set_expand(widget, h, v);
 }
 
+void Layout::WidgetLoader::ghost(bool g)
+{
+	layout.set_ghost(widget, g);
+}
+
 void Layout::WidgetLoader::gravity(int h, int v)
 {
 	layout.set_gravity(widget, h, v);