X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;f=source%2Flist.cpp;h=9eff09bb47566a1a6785ee909327da878f8a29ce;hb=21cb1e0b6fcc653d1298423dff5af5609389d415;hp=14c779f0f579dc236eae5049e5c4720e94760591;hpb=c2664a6da9ee4a9fc3cb1adb42442412b45c7333;p=libs%2Fgltk.git

diff --git a/source/list.cpp b/source/list.cpp
index 14c779f..9eff09b 100644
--- a/source/list.cpp
+++ b/source/list.cpp
@@ -1,6 +1,9 @@
+#include <msp/core/raii.h>
 #include <msp/debug/demangle.h>
 #include <msp/gl/matrix.h>
 #include <msp/gl/meshbuilder.h>
+#include <msp/input/keys.h>
+#include <msp/strings/format.h>
 #include "graphic.h"
 #include "list.h"
 #include "part.h"
@@ -34,11 +37,21 @@ List::List(ListData &d):
 
 void List::init()
 {
+	input_type = INPUT_NAVIGATION;
+
 	item_factory = 0;
+	view_mode = LIST;
 	sel_index = -1;
-	first = 0;
+	focus_index = -1;
+	first_row = 0;
 	max_scroll = 0;
-	view_size = 5;
+	view_rows = 5;
+	view_columns = 5;
+	items_part = 0;
+	ignore_slider_change = false;
+	dragging = false;
+	drag_start_x = 0;
+	drag_start_y = 0;
 
 	observer = new DataObserver(*this);
 
@@ -61,22 +74,34 @@ void List::autosize_special(const Part &part, Geometry &ageom) const
 	{
 		const Sides &margin = part.get_margin();
 
-		unsigned max_w = 0;
-		unsigned total_h = 0;
+		unsigned items_w = 0;
+		unsigned items_h = 0;
 		for(unsigned i=0; i<items.size(); ++i)
 		{
 			Geometry igeom;
 			items[i]->autosize(igeom);
-			max_w = max(max_w, igeom.w);
-			if(view_size==0 || i<view_size)
-				total_h += igeom.h;
+			items_w = max(items_w, igeom.w);
+			items_h = max(items_h, igeom.h);
 		}
 
-		if(!items.empty() && items.size()<view_size)
-			total_h = total_h*view_size/items.size();
+		if(view_mode==GRID)
+		{
+			unsigned r = view_rows;
+			unsigned c = view_columns;
+			if(r==0 && c==0)
+				r = sqrt(items.size());
+			if(r==0)
+				r = (items.size()+c-1)/c;
+			if(c==0)
+				c = (items.size()+r-1)/r;
+			items_w *= c;
+			items_h *= r;
+		}
+		else
+			items_h *= (view_rows==0 ? items.size() : view_rows);
 
-		ageom.w = max(ageom.w, max_w+margin.left+margin.right);
-		ageom.h = max(ageom.h, total_h+margin.top+margin.bottom);
+		ageom.w = max(ageom.w, items_w+margin.left+margin.right);
+		ageom.h = max(ageom.h, items_h+margin.top+margin.bottom);
 	}
 	else if(part.get_name()=="slider")
 		autosize_child(slider, part, ageom);
@@ -116,11 +141,13 @@ void List::items_changed()
 
 List::Item *List::create_item(unsigned index)
 {
-	Item *item = 0;	
+	Item *item = 0;
 	if(item_factory)
 		item = item_factory->create_item(index);
 	else
 		item = new BasicItem(data->get_string(index));
+	if(static_cast<int>(index)==sel_index)
+		item->set_active(true);
 	add(*item);
 	item->autosize();
 	item->signal_autosize_changed.connect(sigc::bind(sigc::mem_fun(this, &List::item_autosize_changed), item));
@@ -129,7 +156,13 @@ List::Item *List::create_item(unsigned index)
 
 void List::set_view_size(unsigned s)
 {
-	view_size = s;
+	set_view_size(s, s);
+}
+
+void List::set_view_size(unsigned r, unsigned c)
+{
+	view_rows = r;
+	view_columns = c;
 	signal_autosize_changed.emit();
 }
 
@@ -143,55 +176,49 @@ void List::set_selected_index(int i)
 	if(i>=static_cast<int>(data->size()))
 		throw out_of_range("List::set_selected_index");
 
-	if(i==sel_index)
+	if(i==sel_index || (i<0 && sel_index<0))
 		return;
 
 	if(sel_index>=0)
 		items[sel_index]->set_active(false);
 	if(i<0)
+	{
 		sel_index = -1;
+		focus_index = -1;
+		set_input_focus(0);
+		signal_selection_cleared.emit();
+	}
 	else
 	{
 		sel_index = i;
+		focus_index = i;
 		items[sel_index]->set_active(true);
+		if(state&FOCUS)
+			set_input_focus(items[focus_index]);
 		signal_item_selected.emit(sel_index);
 	}
 }
 
+void List::set_selected_item(Widget *item)
+{
+	for(unsigned i=rows[first_row].first; (i<items.size() && items[i]->is_visible()); ++i)
+		if(item==items[i])
+			return set_selected_index(i);
+}
+
 void List::rebuild_special(const Part &part)
 {
 	if(part.get_name()=="slider")
 		reposition_child(slider, part);
 	else if(part.get_name()=="items")
 	{
-		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;
-				}
-			}
-		}
-
+		SetFlag flag(ignore_slider_change);
+		reposition_items(true);
+		unsigned old_first_row = first_row;
+		unsigned old_max_scroll = max_scroll;
 		check_view_range();
+		if(first_row!=old_first_row || max_scroll!=old_max_scroll)
+			reposition_items(false);
 	}
 
 	Widget::rebuild_special(part);
@@ -201,24 +228,175 @@ void List::render_special(const Part &part, GL::Renderer &renderer) const
 {
 	if(part.get_name()=="items")
 	{
-		for(unsigned i=first; (i<items.size() && items[i]->is_visible()); ++i)
+		for(unsigned i=rows[first_row].first; (i<items.size() && items[i]->is_visible()); ++i)
 			items[i]->render(renderer);
 	}
 	else if(part.get_name()=="slider")
 		slider.render(renderer);
 }
 
+bool List::key_press(unsigned key, unsigned mod)
+{
+	if(key==Input::KEY_UP && mod==MOD_CTRL)
+		move_focus(NAV_UP, false);
+	else if(key==Input::KEY_DOWN && mod==MOD_CTRL)
+		move_focus(NAV_DOWN, false);
+	else
+		return false;
+
+	return true;
+}
+
 void List::button_press(int x, int y, unsigned btn)
 {
-	Container::button_press(x, y, btn);
-	if(click_focus && btn==1)
+	if(btn==4 || btn==5)
+	{
+		unsigned change = 3;
+		if(btn==4)
+		{
+			change = min(first_row, change);
+			slider.set_value(max_scroll-(first_row-change));
+		}
+		else if(btn==5)
+		{
+			change = min(max_scroll-first_row, change);
+			slider.set_value(max_scroll-(first_row+change));
+		}
+	}
+	else
+	{
+		Container::button_press(x, y, btn);
+		if(click_focus && btn==1)
+			set_selected_item(click_focus);
+	}
+}
+
+void List::touch_press(int x, int y, unsigned finger)
+{
+	if(finger==0)
+	{
+		dragging = true;
+		drag_start_x = x;
+		drag_start_y = y;
+	}
+}
+
+void List::touch_release(int x, int y, unsigned finger)
+{
+	if(finger==0)
 	{
-		for(unsigned i=first; (i<items.size() && items[i]->is_visible()); ++i)
-			if(click_focus==items[i])
+		int dx = x-drag_start_x;
+		int dy = y-drag_start_y;
+		if(dx*dx+dy*dy<25)
+		{
+			Container::touch_press(drag_start_x, drag_start_y, finger);
+			if(touch_focus)
+				set_selected_item(touch_focus);
+			Container::touch_motion(x, y, finger);
+			Container::touch_release(x, y, finger);
+		}
+		dragging = false;
+	}
+}
+
+void List::touch_motion(int, int y, unsigned finger)
+{
+	if(finger==0 && !items.empty() && dragging)
+	{
+		int dy = y-drag_start_y;
+		if(dy>0 && first_row<max_scroll)
+		{
+			int row_h = rows[first_row].height;
+			if(dy>row_h)
+			{
+				drag_start_y += row_h;
+				slider.set_value(max_scroll-(first_row+1));
+			}
+		}
+		else if(dy<0 && first_row>0)
+		{
+			int row_h = rows[first_row-1].height;
+			if(-dy>row_h)
 			{
-				set_selected_index(i);
-				break;
+				drag_start_y -= row_h;
+				slider.set_value(max_scroll-(first_row-1));
 			}
+		}
+	}
+}
+
+void List::focus_in()
+{
+	Container::focus_in();
+	if(focus_index>=0 && items[focus_index]->is_visible())
+		set_input_focus(items[focus_index]);
+	else
+	{
+		if(sel_index>=0 && items[sel_index]->is_visible())
+			set_focus_index(sel_index);
+		else if(!items.empty())
+			set_focus_index(rows[first_row].first);
+	}
+}
+
+bool List::navigate(Navigation nav)
+{
+	if((nav==NAV_UP || nav==NAV_DOWN || ((nav==NAV_LEFT || nav==NAV_RIGHT) && view_mode==GRID)) && !items.empty())
+		move_focus(nav, true);
+	else if(nav==NAV_ACTIVATE)
+		set_selected_index(focus_index);
+	else
+		return false;
+
+	return true;
+}
+
+void List::on_style_change()
+{
+	items_part = (style ? style->get_part("items") : 0);
+}
+
+void List::move_focus(Navigation nav, bool select)
+{
+	if(nav==NAV_UP && view_mode==GRID)
+	{
+		unsigned row = item_index_to_row(focus_index);
+		if(row>0)
+			set_focus_index(rows[row-1].first+focus_index-rows[row].first);
+		else
+			set_focus_index(0);
+	}
+	else if(nav==NAV_DOWN && view_mode==GRID)
+	{
+		unsigned row = item_index_to_row(focus_index);
+		if(row+1<rows.size())
+			set_focus_index(rows[row+1].first+focus_index-rows[row].first);
+		else
+			set_focus_index(items.size()-1);
+	}
+	else if(nav==NAV_UP || (nav==NAV_LEFT && view_mode==GRID))
+	{
+		if(focus_index>0)
+			set_focus_index(focus_index-1);
+	}
+	else if(nav==NAV_DOWN || (nav==NAV_RIGHT && view_mode==GRID))
+	{
+		if(static_cast<unsigned>(focus_index+1)<items.size())
+			set_focus_index(focus_index+1);
+	}
+
+	if(select)
+		set_selected_index(focus_index);
+}
+
+void List::set_focus_index(int i)
+{
+	focus_index = i;
+	if(focus_index>=0)
+	{
+		scroll_to_focus();
+		if(state&FOCUS)
+			set_input_focus(items[focus_index]);
 	}
 }
 
@@ -229,45 +407,138 @@ void List::item_autosize_changed(Item *item)
 	rebuild();
 }
 
-void List::check_view_range()
+void List::reposition_items(bool record_rows)
 {
-	if(!style)
+	if(!items_part)
 		return;
 
-	unsigned h = geom.h;
-	if(const Part *items_part = style->get_part("items"))
+	if(record_rows)
 	{
-		const Sides &margin = items_part->get_margin();
-		h -= margin.top+margin.bottom;
+		rows.clear();
+		rows.push_back(0);
 	}
 
-	max_scroll = items.size();
-	for(unsigned i=items.size(); i-->0; )
+	const Sides &margin = items_part->get_margin();
+	unsigned view_w = geom.w-min(geom.w, margin.left+margin.right);
+	unsigned x = 0;
+	unsigned y = 0;
+	unsigned row_h = 0;
+	for(unsigned i=0; i<items.size(); ++i)
 	{
-		unsigned ih = items[i]->get_geometry().h;
-		if(ih<=h)
+		const Geometry &igeom = items[i]->get_geometry();
+
+		if(view_mode!=GRID || (x>0 && x+igeom.w>view_w))
+		{
+			x = 0;
+			if(y)
+				y -= row_h;
+			if(record_rows && i>0)
+			{
+				rows.back().height = row_h;
+				rows.push_back(i);
+			}
+			row_h = 0;
+		}
+
+		if(first_row<rows.size() && i==rows[first_row].first)
+			y = geom.h-min(geom.h, margin.top);
+
+		if(!y)
+			items[i]->set_visible(false);
+		else if(igeom.h+margin.bottom<=y)
+		{
+			items[i]->set_visible(true);
+			unsigned iw = (view_mode==GRID ? igeom.w : view_w);
+			items[i]->set_geometry(Geometry(margin.left+x, y-igeom.h, iw, igeom.h));
+		}
+		else
 		{
-			h -= ih;
-			--max_scroll;
+			for(unsigned j=rows.back().first; j<=i; ++j)
+				items[j]->set_visible(false);
+			y = 0;
 		}
+
+		x += igeom.w;
+		row_h = max(row_h, igeom.h);
 	}
 
-	if(first>max_scroll)
-		first = max_scroll;
+	if(record_rows)
+		rows.back().height = row_h;
+}
+
+unsigned List::last_to_first_row(unsigned last) const
+{
+	if(!items_part)
+		return last;
+
+	const Sides &margin = items_part->get_margin();
+	unsigned view_h = geom.h-min(geom.h, margin.top+margin.bottom);
+
+	unsigned items_h = 0;
+	for(unsigned i=last; i<rows.size(); --i)
+	{
+		items_h += rows[i].height;
+		if(items_h>view_h)
+			return min(i+1, last);
+	}
+
+	return 0;
+}
+
+unsigned List::item_index_to_row(unsigned index) const
+{
+	for(unsigned i=0; i+1<rows.size(); ++i)
+		if(rows[i+1].first>index)
+			return i;
+	return rows.size()-1;
+}
+
+void List::check_view_range()
+{
+	if(!style)
+		return;
+
+	if(items.empty())
+		max_scroll = 0;
+	else
+		max_scroll = last_to_first_row(rows.size()-1);
+
+	if(first_row>max_scroll)
+		first_row = max_scroll;
 
 	slider.set_range(0, max_scroll);
-	slider.set_value(max_scroll-first);
+	slider.set_value(max_scroll-first_row);
+}
+
+void List::scroll_to_focus()
+{
+	if(focus_index<0 || items[focus_index]->is_visible())
+		return;
+
+	unsigned focus_row = item_index_to_row(static_cast<unsigned>(focus_index));
+	if(focus_row<first_row)
+		slider.set_value(max_scroll-focus_row);
+	else
+		slider.set_value(max_scroll-last_to_first_row(focus_row));
 }
 
 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);
+		first_row = max_scroll-static_cast<unsigned>(value);
 		rebuild();
 	}
 }
 
+void List::adjust_index(int &index, int pos, int change)
+{
+	if(index>pos)
+		index += change;
+	else if(index==pos)
+		index = (change>0 ? index+change : -1);
+}
+
 
 List::DataObserver::DataObserver(List &l):
 	list(l)
@@ -280,8 +551,8 @@ List::DataObserver::DataObserver(List &l):
 
 void List::DataObserver::item_added(unsigned i)
 {
-	if(list.sel_index>=static_cast<int>(i))
-		++list.sel_index;
+	adjust_index(list.sel_index, i, 1);
+	adjust_index(list.focus_index, i, 1);
 
 	Item *item = list.create_item(i);
 	list.items.insert(list.items.begin()+i, item);
@@ -290,23 +561,28 @@ void List::DataObserver::item_added(unsigned i)
 
 void List::DataObserver::item_removed(unsigned i)
 {
-	if(list.sel_index>static_cast<int>(i))
-		--list.sel_index;
-	else if(list.sel_index==static_cast<int>(i))
-		list.sel_index = -1;
+	bool had_selection = (list.sel_index>=0);
+	adjust_index(list.sel_index, i, -1);
+	adjust_index(list.focus_index, i, -1);
 
 	delete list.items[i];
 	list.items.erase(list.items.begin()+i);
 	list.items_changed();
+
+	if(had_selection && list.sel_index<0)
+		list.signal_selection_cleared.emit();
 }
 
 void List::DataObserver::cleared()
 {
 	list.sel_index = -1;
+	list.focus_index = -1;
 	for(vector<Item *>::iterator i=list.items.begin(); i!=list.items.end(); ++i)
 		delete *i;
 	list.items.clear();
 	list.items_changed();
+
+	list.signal_selection_cleared.emit();
 }
 
 void List::DataObserver::refresh_item(unsigned i)
@@ -319,6 +595,11 @@ void List::DataObserver::refresh_item(unsigned i)
 }
 
 
+List::Item::Item()
+{
+	input_type = INPUT_NAVIGATION;
+}
+
 void List::Item::autosize_special(const Part &part, Geometry &ageom) const
 {
 	if(part.get_name()=="children")
@@ -349,6 +630,21 @@ void List::Item::render_special(const Part &part, GL::Renderer &renderer) const
 }
 
 
+void List::SimpleItem::on_style_change()
+{
+	if(!style || children.empty())
+		return;
+
+	Widget *child = children.front()->widget;
+	child->autosize();
+	if(const Part *part = style->get_part("children"))
+	{
+		const Sides &margin = part->get_margin();
+		child->set_position(margin.left, margin.bottom);
+	}
+}
+
+
 void List::MultiColumnItem::check_widths(vector<unsigned> &widths) const
 {
 	if(widths.size()<children.size())
@@ -410,8 +706,8 @@ void List::MultiColumnItem::on_style_change()
 			if(MultiColumnItem *mci = dynamic_cast<MultiColumnItem *>(*i))
 				mci->set_widths(self_widths);
 	}
-	else
-		set_widths(self_widths);
+
+	set_widths(self_widths);
 }
 
 
@@ -421,25 +717,14 @@ List::BasicItem::BasicItem(const string &text):
 	add(label);
 }
 
-void List::BasicItem::on_style_change()
-{
-	if(!style)
-		return;
-
-	label.autosize();
-	if(const Part *part = style->get_part("children"))
-	{
-		const Sides &margin = part->get_margin();
-		label.set_position(margin.left, margin.bottom);
-	}
-}
-
 
 List::Loader::Loader(List &l):
 	DataFile::DerivedObjectLoader<List, Widget::Loader>(l)
 {
 	add("item", &Loader::item);
-	add("view_size", &List::view_size);
+	add("view_mode", &List::view_mode);
+	add("view_size", &List::view_rows);
+	add("view_size", &List::view_rows, &List::view_columns);
 }
 
 void List::Loader::item(const string &v)
@@ -447,5 +732,17 @@ void List::Loader::item(const string &v)
 	dynamic_cast<BasicListData<string> &>(*obj.data).append(v);
 }
 
+
+void operator>>(const LexicalConverter &conv, List::ViewMode &vm)
+{
+	const string &str = conv.get();
+	if(str=="LIST")
+		vm = List::LIST;
+	else if(str=="GRID")
+		vm = List::GRID;
+	else
+		throw lexical_error(format("conversion of '%s' to List::ViewMode", str));
+}
+
 } // namespace GLtk
 } // namespace Msp