X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;f=source%2Flist.cpp;h=1b26a3ff7b20055ee7e773d585d86e09dab42371;hb=c6904c8dc2787047f1999737bc0e5813c56901a0;hp=653a40c92bc1195e7b75276a50f08fc37891ff29;hpb=d155c3559f7801825a2326b4186b3c7d18c23214;p=libs%2Fgltk.git

diff --git a/source/list.cpp b/source/list.cpp
index 653a40c..1b26a3f 100644
--- a/source/list.cpp
+++ b/source/list.cpp
@@ -1,3 +1,4 @@
+#include <msp/core/raii.h>
 #include <msp/debug/demangle.h>
 #include <msp/gl/matrix.h>
 #include <msp/gl/meshbuilder.h>
@@ -39,6 +40,7 @@ void List::init()
 	first = 0;
 	max_scroll = 0;
 	view_size = 5;
+	ignore_slider_change = false;
 
 	observer = new DataObserver(*this);
 
@@ -55,7 +57,7 @@ List::~List()
 		delete data;
 }
 
-void List::autosize_special(const Part &part, Geometry &ageom)
+void List::autosize_special(const Part &part, Geometry &ageom) const
 {
 	if(part.get_name()=="items")
 	{
@@ -65,7 +67,8 @@ void List::autosize_special(const Part &part, Geometry &ageom)
 		unsigned total_h = 0;
 		for(unsigned i=0; i<items.size(); ++i)
 		{
-			const Geometry &igeom = items[i]->get_geometry();
+			Geometry igeom;
+			items[i]->autosize(igeom);
 			max_w = max(max_w, igeom.w);
 			if(view_size==0 || i<view_size)
 				total_h += igeom.h;
@@ -77,6 +80,8 @@ void List::autosize_special(const Part &part, Geometry &ageom)
 		ageom.w = max(ageom.w, max_w+margin.left+margin.right);
 		ageom.h = max(ageom.h, total_h+margin.top+margin.bottom);
 	}
+	else if(part.get_name()=="slider")
+		autosize_child(slider, part, ageom);
 }
 
 void List::set_data(ListData &d)
@@ -107,9 +112,8 @@ void List::set_data(ListData &d)
 
 void List::items_changed()
 {
-	check_view_range();
 	signal_autosize_changed.emit();
-	reposition_items();
+	rebuild();
 }
 
 List::Item *List::create_item(unsigned index)
@@ -156,6 +160,46 @@ void List::set_selected_index(int i)
 	}
 }
 
+void List::rebuild_special(const Part &part)
+{
+	if(part.get_name()=="slider")
+		reposition_child(slider, part);
+	else if(part.get_name()=="items")
+	{
+		SetFlag flag(ignore_slider_change);
+		check_view_range();
+
+		const Sides &margin = part.get_margin();
+		unsigned w = geom.w-min(geom.w, margin.left+margin.right);
+		unsigned y = geom.h-min(geom.h, margin.top);
+		for(unsigned i=0; i<items.size(); ++i)
+		{
+			if(i<first || !y)
+				items[i]->set_visible(false);
+			else
+			{
+				Geometry igeom = items[i]->get_geometry();
+				if(igeom.h+margin.bottom<=y)
+				{
+					items[i]->set_visible(true);
+					y -= igeom.h;
+					igeom.x = margin.left;
+					igeom.y = y;
+					igeom.w = w;
+					items[i]->set_geometry(igeom);
+				}
+				else
+				{
+					items[i]->set_visible(false);
+					y = 0;
+				}
+			}
+		}
+	}
+
+	Widget::rebuild_special(part);
+}
+
 void List::render_special(const Part &part, GL::Renderer &renderer) const
 {
 	if(part.get_name()=="items")
@@ -181,79 +225,11 @@ void List::button_press(int x, int y, unsigned btn)
 	}
 }
 
-void List::on_geometry_change()
-{
-	reposition_slider();
-	reposition_items();
-
-	check_view_range();
-}
-
-void List::on_style_change()
-{
-	if(!style)
-		return;
-
-	reposition_slider();
-	reposition_items();
-
-	check_view_range();
-}
-
-void List::reposition_slider()
-{
-	if(!style)
-		return;
-
-	if(const Part *slider_part = style->get_part("slider"))
-	{
-		Geometry sgeom = slider_part->get_geometry();
-		slider_part->get_alignment().apply(sgeom, geom, slider_part->get_margin());
-		slider.set_geometry(sgeom);
-	}
-}
-
 void List::item_autosize_changed(Item *item)
 {
-	signal_autosize_changed.emit();
 	item->autosize();
-	reposition_items();
-}
-
-void List::reposition_items()
-{
-	if(!style)
-		return;
-
-	if(const Part *items_part = style->get_part("items"))
-	{
-		const Sides &margin = items_part->get_margin();
-		unsigned w = geom.w-margin.left-margin.right;
-		unsigned y = geom.h-margin.top;
-		for(unsigned i=0; i<items.size(); ++i)
-		{
-			if(i<first || !y)
-				items[i]->set_visible(false);
-			else
-			{
-				Geometry igeom = items[i]->get_geometry();
-				if(igeom.h+margin.bottom<=y)
-				{
-					items[i]->set_visible(true);
-					y -= igeom.h;
-					igeom.x = margin.left;
-					igeom.y = y;
-					igeom.w = w;
-					items[i]->set_geometry(igeom);
-				}
-				else
-				{
-					items[i]->set_visible(false);
-					y = 0;
-				}
-			}
-		}
-	}
+	signal_autosize_changed.emit();
+	rebuild();
 }
 
 void List::check_view_range()
@@ -288,10 +264,10 @@ void List::check_view_range()
 
 void List::slider_value_changed(double value)
 {
-	if(max_scroll>0)
+	if(max_scroll>0 && !ignore_slider_change)
 	{
 		first = max_scroll-static_cast<unsigned>(value);
-		reposition_items();
+		rebuild();
 	}
 }
 
@@ -339,19 +315,22 @@ void List::DataObserver::cleared()
 void List::DataObserver::refresh_item(unsigned i)
 {
 	delete list.items[i];
+	// Avoid stale pointer while create_item is executing
+	list.items[i] = 0;
 	list.items[i] = list.create_item(i);
 	list.items_changed();
 }
 
 
-void List::Item::autosize_special(const Part &part, Geometry &ageom)
+void List::Item::autosize_special(const Part &part, Geometry &ageom) const
 {
 	if(part.get_name()=="children")
 	{
 		const Sides &margin = part.get_margin();
 		for(list<Child *>::const_iterator i=children.begin(); i!=children.end(); ++i)
 		{
-			const Geometry &cgeom = (*i)->widget->get_geometry();
+			Geometry cgeom;
+			(*i)->widget->autosize(cgeom);
 			ageom.w = max(ageom.w, cgeom.x+cgeom.w+margin.right);
 			ageom.h = max(ageom.h, cgeom.y+cgeom.h+margin.top);
 		}
@@ -373,6 +352,72 @@ void List::Item::render_special(const Part &part, GL::Renderer &renderer) const
 }
 
 
+void List::MultiColumnItem::check_widths(vector<unsigned> &widths) const
+{
+	if(widths.size()<children.size())
+		widths.resize(children.size(), 0);
+
+	unsigned n = 0;
+	for(list<Child *>::const_iterator i=children.begin(); i!=children.end(); ++i, ++n)
+	{
+		Geometry cgeom;
+		(*i)->widget->autosize(cgeom);
+		// TODO invent a better way to specify spacings
+		widths[n] = max(widths[n], cgeom.w+8);
+	}
+}
+
+void List::MultiColumnItem::set_widths(const vector<unsigned> &widths)
+{
+	if(!style)
+		return;
+
+	const Part *part = style->get_part("children");
+	if(!part)
+		return;
+
+	const Sides &margin = part->get_margin();
+	int x = margin.left;
+	unsigned n = 0;
+	for(list<Child *>::const_iterator i=children.begin(); i!=children.end(); ++i, ++n)
+	{
+		(*i)->widget->set_position(x, margin.bottom);
+		x += widths[n];
+	}
+}
+
+void List::MultiColumnItem::on_style_change()
+{
+	if(!style)
+		return;
+
+	for(std::list<Child *>::const_iterator i=children.begin(); i!=children.end(); ++i)
+		(*i)->widget->autosize();
+
+	vector<unsigned> widths;
+	List *list = static_cast<List *>(parent);
+	for(vector<Item *>::const_iterator i=list->items.begin(); i!=list->items.end(); ++i)
+		if(*i!=this)
+			if(MultiColumnItem *mci = dynamic_cast<MultiColumnItem *>(*i))
+				mci->check_widths(widths);
+
+	vector<unsigned> self_widths(widths);
+	check_widths(self_widths);
+	bool update_all = false;
+	for(unsigned i=0; (!update_all && i<widths.size() && i<self_widths.size()); ++i)
+		update_all = self_widths[i]>widths[i];
+
+	if(update_all)
+	{
+		for(vector<Item *>::const_iterator i=list->items.begin(); i!=list->items.end(); ++i)
+			if(MultiColumnItem *mci = dynamic_cast<MultiColumnItem *>(*i))
+				mci->set_widths(self_widths);
+	}
+
+	set_widths(self_widths);
+}
+
+
 List::BasicItem::BasicItem(const string &text):
 	label(text)
 {