Add formspec table

1 files changed, 1212 insertions, 0 deletions

diff --git a/src/guiTable.cpp b/src/guiTable.cpp
new file mode 100644
index 000000000..5febb8370
--- /dev/null
+++ b/src/guiTable.cpp
@@ -0,0 +1,1212 @@
+/*
+Minetest
+Copyright (C) 2013 celeron55, Perttu Ahola <celeron55@gmail.com>
+
+This program is free software; you can redistribute it and/or modify
+it under the terms of the GNU Lesser General Public License as published by
+the Free Software Foundation; either version 2.1 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU Lesser General Public License for more details.
+
+You should have received a copy of the GNU Lesser General Public License along
+with this program; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+*/
+
+
+#include "guiTable.h"
+#include <queue>
+#include <sstream>
+#include <utility>
+#include <string.h>
+#include <IGUISkin.h>
+#include <IGUIFont.h>
+#include <IGUIScrollBar.h>
+#include "debug.h"
+#include "log.h"
+#include "tile.h"
+#include "gettime.h"
+#include "util/string.h"
+#include "util/numeric.h"
+#include "guiFormSpecMenu.h" // for parseColor()
+
+/*
+	GUITable
+*/
+
+GUITable::GUITable(gui::IGUIEnvironment *env,
+		gui::IGUIElement* parent, s32 id,
+		core::rect<s32> rectangle,
+		ISimpleTextureSource *tsrc
+):
+	gui::IGUIElement(gui::EGUIET_ELEMENT, env, parent, id, rectangle),
+	m_tsrc(tsrc),
+	m_is_textlist(false),
+	m_has_tree_column(false),
+	m_selected(-1),
+	m_sel_column(0),
+	m_sel_doubleclick(false),
+	m_keynav_time(0),
+	m_keynav_buffer(L""),
+	m_border(true),
+	m_color(255, 255, 255, 255),
+	m_background(255, 0, 0, 0),
+	m_highlight(255, 70, 100, 50),
+	m_highlight_text(255, 255, 255, 255),
+	m_rowheight(1),
+	m_font(NULL),
+	m_scrollbar(NULL)
+{
+	assert(tsrc != NULL);
+
+	gui::IGUISkin* skin = Environment->getSkin();
+
+	m_font = skin->getFont();
+	if (m_font) {
+		m_font->grab();
+		m_rowheight = m_font->getDimension(L"A").Height + 4;
+		m_rowheight = MYMAX(m_rowheight, 1);
+	}
+
+	const s32 s = skin->getSize(gui::EGDS_SCROLLBAR_SIZE);
+	m_scrollbar = Environment->addScrollBar(false,
+			core::rect<s32>(RelativeRect.getWidth() - s,
+					0,
+					RelativeRect.getWidth(),
+					RelativeRect.getHeight()),
+			this, -1);
+	m_scrollbar->setSubElement(true);
+	m_scrollbar->setTabStop(false);
+	m_scrollbar->setAlignment(gui::EGUIA_LOWERRIGHT, gui::EGUIA_LOWERRIGHT,
+			gui::EGUIA_UPPERLEFT, gui::EGUIA_LOWERRIGHT);
+	m_scrollbar->setVisible(false);
+	m_scrollbar->setPos(0);
+
+	setTabStop(true);
+	setTabOrder(-1);
+	updateAbsolutePosition();
+}
+
+GUITable::~GUITable()
+{
+	for (size_t i = 0; i < m_rows.size(); ++i)
+		delete[] m_rows[i].cells;
+
+	if (m_font)
+		m_font->drop();
+}
+
+GUITable::Option GUITable::splitOption(const std::string &str)
+{
+	size_t equal_pos = str.find('=');
+	if (equal_pos == std::string::npos)
+		return GUITable::Option(str, "");
+	else
+		return GUITable::Option(str.substr(0, equal_pos),
+				str.substr(equal_pos + 1));
+}
+
+void GUITable::setTextList(const std::vector<std::string> &content,
+		bool transparent)
+{
+	clear();
+
+	if (transparent) {
+		m_background.setAlpha(0);
+		m_border = false;
+	}
+
+	m_is_textlist = true;
+
+	s32 empty_string_index = allocString("");
+
+	m_rows.resize(content.size());
+	for (s32 i = 0; i < (s32) content.size(); ++i) {
+		Row *row = &m_rows[i];
+		row->cells = new Cell[1];
+		row->cellcount = 1;
+		row->indent = 0;
+		row->visible_index = i;
+		m_visible_rows.push_back(i);
+
+		Cell *cell = row->cells;
+		cell->xmin = 0;
+		cell->xmax = 0x7fff;  // something large enough
+		cell->xpos = 6;
+		cell->content_type = COLUMN_TYPE_TEXT;
+		cell->content_index = empty_string_index;
+		cell->tooltip_index = empty_string_index;
+		cell->color.set(255, 255, 255, 255);
+		cell->color_defined = false;
+		cell->reported_column = 1;
+
+		// parse row content (color)
+		const std::string &s = content[i];
+		if (s[0] == '#' && s[1] == '#') {
+			// double # to escape
+			cell->content_index = allocString(s.substr(2));
+		}
+		else if (s[0] == '#' && s.size() >= 7 &&
+				GUIFormSpecMenu::parseColor(
+					s.substr(0,7), cell->color, false)) {
+			// single # for color
+			cell->color_defined = true;
+			cell->content_index = allocString(s.substr(7));
+		}
+		else {
+			// no #, just text
+			cell->content_index = allocString(s);
+		}
+
+	}
+
+	allocationComplete();
+
+	// Clamp scroll bar position
+	updateScrollBar();
+}
+
+void GUITable::setTable(const TableOptions &options,
+		const TableColumns &columns,
+		std::vector<std::string> &content)
+{
+	clear();
+
+	// Naming conventions:
+	// i is always a row index, 0-based
+	// j is always a column index, 0-based
+	// k is another index, for example an option index
+
+	// Handle table options
+	video::SColor default_color(255, 255, 255, 255);
+	s32 opendepth = 0;
+	for (size_t k = 0; k < options.size(); ++k) {
+		const std::string &name = options[k].name;
+		const std::string &value = options[k].value;
+		if (name == "color")
+			GUIFormSpecMenu::parseColor(value, m_color, false);
+		else if (name == "background")
+			GUIFormSpecMenu::parseColor(value, m_background, false);
+		else if (name == "border")
+			m_border = is_yes(value);
+		else if (name == "highlight")
+			GUIFormSpecMenu::parseColor(value, m_highlight, false);
+		else if (name == "highlight_text")
+			GUIFormSpecMenu::parseColor(value, m_highlight_text, false);
+		else if (name == "opendepth")
+			opendepth = stoi(value);
+		else
+			errorstream<<"Invalid table option: \""<<name<<"\""
+				<<" (value=\""<<value<<"\")"<<std::endl;
+	}
+
+	// Get number of columns and rows
+	// note: error case columns.size() == 0 was handled above
+	s32 colcount = columns.size();
+	assert(colcount >= 1);
+	// rowcount = ceil(cellcount / colcount) but use integer arithmetic
+	s32 rowcount = (content.size() + colcount - 1) / colcount;
+	assert(rowcount >= 0);
+	// Append empty strings to content if there is an incomplete row
+	s32 cellcount = rowcount * colcount;
+	while (content.size() < (u32) cellcount)
+		content.push_back("");
+
+	// Create temporary rows (for processing columns)
+	struct TempRow {
+		// Current horizontal position (may different between rows due
+		// to indent/tree columns, or text/image columns with width<0)
+		s32 x;
+		// Tree indentation level
+		s32 indent;
+		// Next cell: Index into m_strings or m_images
+		s32 content_index;
+		// Next cell: Width in pixels
+		s32 content_width;
+		// Vector of completed cells in this row
+		std::vector<Cell> cells;
+		// Stores colors and how long they last (maximum column index)
+		std::vector<std::pair<video::SColor, s32> > colors;
+
+		TempRow(): x(0), indent(0), content_index(0), content_width(0) {}
+	};
+	TempRow *rows = new TempRow[rowcount];
+
+	// Get em width. Pedantically speaking, the width of "M" is not
+	// necessarily the same as the em width, but whatever, close enough.
+	s32 em = 6;
+	if (m_font)
+		em = m_font->getDimension(L"M").Width;
+
+	s32 default_tooltip_index = allocString("");
+
+	std::map<s32, s32> active_image_indices;
+
+	// Process content in column-major order
+	for (s32 j = 0; j < colcount; ++j) {
+		// Check column type
+		ColumnType columntype = COLUMN_TYPE_TEXT;
+		if (columns[j].type == "text")
+			columntype = COLUMN_TYPE_TEXT;
+		else if (columns[j].type == "image")
+			columntype = COLUMN_TYPE_IMAGE;
+		else if (columns[j].type == "color")
+			columntype = COLUMN_TYPE_COLOR;
+		else if (columns[j].type == "indent")
+			columntype = COLUMN_TYPE_INDENT;
+		else if (columns[j].type == "tree")
+			columntype = COLUMN_TYPE_TREE;
+		else
+			errorstream<<"Invalid table column type: \""
+				<<columns[j].type<<"\""<<std::endl;
+
+		// Process column options
+		s32 padding = myround(0.5 * em);
+		s32 tooltip_index = default_tooltip_index;
+		s32 align = 0;
+		s32 width = 0;
+		s32 span = colcount;
+
+		if (columntype == COLUMN_TYPE_INDENT) {
+			padding = 0; // default indent padding
+		}
+		if (columntype == COLUMN_TYPE_INDENT ||
+				columntype == COLUMN_TYPE_TREE) {
+			width = myround(em * 1.5); // default indent width
+		}
+
+		for (size_t k = 0; k < columns[j].options.size(); ++k) {
+			const std::string &name = columns[j].options[k].name;
+			const std::string &value = columns[j].options[k].value;
+			if (name == "padding")
+				padding = myround(stof(value) * em);
+			else if (name == "tooltip")
+				tooltip_index = allocString(value);
+			else if (name == "align" && value == "left")
+				align = 0;
+			else if (name == "align" && value == "center")
+				align = 1;
+			else if (name == "align" && value == "right")
+				align = 2;
+			else if (name == "align" && value == "inline")
+				align = 3;
+			else if (name == "width")
+				width = myround(stof(value) * em);
+			else if (name == "span" && columntype == COLUMN_TYPE_COLOR)
+				span = stoi(value);
+			else if (columntype == COLUMN_TYPE_IMAGE &&
+					!name.empty() &&
+					string_allowed(name, "0123456789")) {
+				s32 content_index = allocImage(value);
+				active_image_indices.insert(std::make_pair(
+							stoi(name),
+							content_index));
+			}
+			else {
+				errorstream<<"Invalid table column option: \""<<name<<"\""
+					<<" (value=\""<<value<<"\")"<<std::endl;
+			}
+		}
+
+		// If current column type can use information from "color" columns,
+		// find out which of those is currently active
+		if (columntype == COLUMN_TYPE_TEXT) {
+			for (s32 i = 0; i < rowcount; ++i) {
+				TempRow *row = &rows[i];
+				while (!row->colors.empty() && row->colors.back().second < j)
+					row->colors.pop_back();
+			}
+		}
+
+		// Make template for new cells
+		Cell newcell;
+		memset(&newcell, 0, sizeof newcell);
+		newcell.content_type = columntype;
+		newcell.tooltip_index = tooltip_index;
+		newcell.reported_column = j+1;
+
+		if (columntype == COLUMN_TYPE_TEXT) {
+			// Find right edge of column
+			s32 xmax = 0;
+			for (s32 i = 0; i < rowcount; ++i) {
+				TempRow *row = &rows[i];
+				row->content_index = allocString(content[i * colcount + j]);
+				const core::stringw &text = m_strings[row->content_index];
+				row->content_width = m_font ?
+					m_font->getDimension(text.c_str()).Width : 0;
+				row->content_width = MYMAX(row->content_width, width);
+				s32 row_xmax = row->x + padding + row->content_width;
+				xmax = MYMAX(xmax, row_xmax);
+			}
+			// Add a new cell (of text type) to each row
+			for (s32 i = 0; i < rowcount; ++i) {
+				newcell.xmin = rows[i].x + padding;
+				alignContent(&newcell, xmax, rows[i].content_width, align);
+				newcell.content_index = rows[i].content_index;
+				newcell.color_defined = !rows[i].colors.empty();
+				if (newcell.color_defined)
+					newcell.color = rows[i].colors.back().first;
+				rows[i].cells.push_back(newcell);
+				rows[i].x = newcell.xmax;
+			}
+		}
+		else if (columntype == COLUMN_TYPE_IMAGE) {
+			// Find right edge of column
+			s32 xmax = 0;
+			for (s32 i = 0; i < rowcount; ++i) {
+				TempRow *row = &rows[i];
+				row->content_index = -1;
+
+				// Find content_index. Image indices are defined in
+				// column options so check active_image_indices.
+				s32 image_index = stoi(content[i * colcount + j]);
+				std::map<s32, s32>::iterator image_iter =
+					active_image_indices.find(image_index);
+				if (image_iter != active_image_indices.end())
+					row->content_index = image_iter->second;
+
+				// Get texture object (might be NULL)
+				video::ITexture *image = NULL;
+				if (row->content_index >= 0)
+					image = m_images[row->content_index];
+
+				// Get content width and update xmax
+				row->content_width = image ? image->getOriginalSize().Width : 0;
+				row->content_width = MYMAX(row->content_width, width);
+				s32 row_xmax = row->x + padding + row->content_width;
+				xmax = MYMAX(xmax, row_xmax);
+			}
+			// Add a new cell (of image type) to each row
+			for (s32 i = 0; i < rowcount; ++i) {
+				newcell.xmin = rows[i].x + padding;
+				alignContent(&newcell, xmax, rows[i].content_width, align);
+				newcell.content_index = rows[i].content_index;
+				rows[i].cells.push_back(newcell);
+				rows[i].x = newcell.xmax;
+			}
+			active_image_indices.clear();
+		}
+		else if (columntype == COLUMN_TYPE_COLOR) {
+			for (s32 i = 0; i < rowcount; ++i) {
+				video::SColor cellcolor(255, 255, 255, 255);
+				if (GUIFormSpecMenu::parseColor(content[i * colcount + j], cellcolor, true))
+					rows[i].colors.push_back(std::make_pair(cellcolor, j+span));
+			}
+		}
+		else if (columntype == COLUMN_TYPE_INDENT ||
+				columntype == COLUMN_TYPE_TREE) {
+			// For column type "tree", reserve additional space for +/-
+			// Also enable special processing for treeview-type tables
+			s32 content_width = 0;
+			if (columntype == COLUMN_TYPE_TREE) {
+				content_width = m_font ? m_font->getDimension(L"+").Width : 0;
+				m_has_tree_column = true;
+			}
+			// Add a new cell (of indent or tree type) to each row
+			for (s32 i = 0; i < rowcount; ++i) {
+				TempRow *row = &rows[i];
+
+				s32 indentlevel = stoi(content[i * colcount + j]);
+				indentlevel = MYMAX(indentlevel, 0);
+				if (columntype == COLUMN_TYPE_TREE)
+					row->indent = indentlevel;
+
+				newcell.xmin = row->x + padding;
+				newcell.xpos = newcell.xmin + indentlevel * width;
+				newcell.xmax = newcell.xpos + content_width;
+				newcell.content_index = 0;
+				newcell.color_defined = !rows[i].colors.empty();
+				if (newcell.color_defined)
+					newcell.color = rows[i].colors.back().first;
+				row->cells.push_back(newcell);
+				row->x = newcell.xmax;
+			}
+		}
+	}
+
+	// Copy temporary rows to not so temporary rows
+	if (rowcount >= 1) {
+		m_rows.resize(rowcount);
+		for (s32 i = 0; i < rowcount; ++i) {
+			Row *row = &m_rows[i];
+			row->cellcount = rows[i].cells.size();
+			row->cells = new Cell[row->cellcount];
+			memcpy((void*) row->cells, (void*) &rows[i].cells[0],
+					row->cellcount * sizeof(Cell));
+			row->indent = rows[i].indent;
+			row->visible_index = i;
+			m_visible_rows.push_back(i);
+		}
+	}
+
+	if (m_has_tree_column) {
+		// Treeview: convent tree to indent cells on leaf rows
+		for (s32 i = 0; i < rowcount; ++i) {
+			if (i == rowcount-1 || m_rows[i].indent >= m_rows[i+1].indent)
+				for (s32 j = 0; j < m_rows[i].cellcount; ++j)
+					if (m_rows[i].cells[j].content_type == COLUMN_TYPE_TREE)
+						m_rows[i].cells[j].content_type = COLUMN_TYPE_INDENT;
+		}
+
+		// Treeview: close rows according to opendepth option
+		std::set<s32> opened_trees;
+		for (s32 i = 0; i < rowcount; ++i)
+			if (m_rows[i].indent < opendepth)
+				opened_trees.insert(i);
+		setOpenedTrees(opened_trees);
+	}
+
+	// Delete temporary information used only during setTable()
+	delete[] rows;
+	allocationComplete();
+
+	// Clamp scroll bar position
+	updateScrollBar();
+}
+
+void GUITable::clear()
+{
+	// Clean up cells and rows
+	for (size_t i = 0; i < m_rows.size(); ++i)
+		delete[] m_rows[i].cells;
+	m_rows.clear();
+	m_visible_rows.clear();
+
+	// Get colors from skin
+	gui::IGUISkin *skin = Environment->getSkin();
+	m_color          = skin->getColor(gui::EGDC_BUTTON_TEXT);
+	m_background     = skin->getColor(gui::EGDC_3D_HIGH_LIGHT);
+	m_highlight      = skin->getColor(gui::EGDC_HIGH_LIGHT);
+	m_highlight_text = skin->getColor(gui::EGDC_HIGH_LIGHT_TEXT);
+
+	// Reset members
+	m_is_textlist = false;
+	m_has_tree_column = false;
+	m_selected = -1;
+	m_sel_column = 0;
+	m_sel_doubleclick = false;
+	m_keynav_time = 0;
+	m_keynav_buffer = L"";
+	m_border = true;
+	m_strings.clear();
+	m_images.clear();
+	m_alloc_strings.clear();
+	m_alloc_images.clear();
+}
+
+std::string GUITable::checkEvent()
+{
+	s32 sel = getSelected();
+	assert(sel >= 0);
+
+	if (sel == 0) {
+		return "INV";
+	}
+
+	std::ostringstream os(std::ios::binary);
+	if (m_sel_doubleclick) {
+		os<<"DCL:";
+		m_sel_doubleclick = false;
+	}
+	else {
+		os<<"CHG:";
+	}
+	os<<sel;
+	if (!m_is_textlist) {
+		os<<":"<<m_sel_column;
+	}
+	return os.str();
+}
+
+s32 GUITable::getSelected() const
+{
+	if (m_selected < 0)
+		return 0;
+
+	assert(m_selected >= 0 && m_selected < (s32) m_visible_rows.size());
+	return m_visible_rows[m_selected] + 1;
+}
+
+void GUITable::setSelected(s32 index)
+{
+	m_selected = -1;
+	m_sel_column = 0;
+	m_sel_doubleclick = false;
+
+	--index;
+
+	s32 rowcount = m_rows.size();
+
+	if (index >= rowcount)
+		index = rowcount - 1;
+	while (index >= 0 && m_rows[index].visible_index < 0)
+		--index;
+	if (index >= 0) {
+		m_selected = m_rows[index].visible_index;
+		assert(m_selected >= 0 && m_selected < (s32) m_visible_rows.size());
+	}
+
+	autoScroll();
+}
+
+GUITable::DynamicData GUITable::getDynamicData() const
+{
+	DynamicData dyndata;
+	dyndata.selected = getSelected();
+	dyndata.scrollpos = m_scrollbar->getPos();
+	dyndata.keynav_time = m_keynav_time;
+	dyndata.keynav_buffer = m_keynav_buffer;
+	if (m_has_tree_column)
+		getOpenedTrees(dyndata.opened_trees);
+	return dyndata;
+}
+
+void GUITable::setDynamicData(const DynamicData &dyndata)
+{
+	if (m_has_tree_column)
+		setOpenedTrees(dyndata.opened_trees);
+
+	m_keynav_time = dyndata.keynav_time;
+	m_keynav_buffer = dyndata.keynav_buffer;
+
+	m_scrollbar->setPos(dyndata.scrollpos);
+
+	setSelected(dyndata.selected);
+	m_sel_column = 0;
+	m_sel_doubleclick = false;
+}
+
+const c8* GUITable::getTypeName() const
+{
+	return "GUITable";
+}
+
+void GUITable::updateAbsolutePosition()
+{
+	IGUIElement::updateAbsolutePosition();
+	updateScrollBar();
+}
+
+void GUITable::draw()
+{
+	if (!IsVisible)
+		return;
+
+	gui::IGUISkin *skin = Environment->getSkin();
+
+	// draw background
+
+	bool draw_background = m_background.getAlpha() > 0;
+	if (m_border)
+		skin->draw3DSunkenPane(this, m_background,
+				true, draw_background,
+				AbsoluteRect, &AbsoluteClippingRect);
+	else if (draw_background)
+		skin->draw2DRectangle(this, m_background,
+				AbsoluteRect, &AbsoluteClippingRect);
+
+	// get clipping rect
+
+	core::rect<s32> client_clip(AbsoluteRect);
+	client_clip.UpperLeftCorner.Y += 1;
+	client_clip.UpperLeftCorner.X += 1;
+	client_clip.LowerRightCorner.Y -= 1;
+	client_clip.LowerRightCorner.X -=
+		m_scrollbar->isVisible() ?
+		skin->getSize(gui::EGDS_SCROLLBAR_SIZE) :
+		1;
+	client_clip.clipAgainst(AbsoluteClippingRect);
+
+	// draw visible rows
+
+	s32 scrollpos = m_scrollbar->getPos();
+	s32 row_min = scrollpos / m_rowheight;
+	s32 row_max = (scrollpos + AbsoluteRect.getHeight() - 1)
+			/ m_rowheight + 1;
+	row_max = MYMIN(row_max, (s32) m_visible_rows.size());
+
+	core::rect<s32> row_rect(AbsoluteRect);
+	if (m_scrollbar->isVisible())
+		row_rect.LowerRightCorner.X -=
+			skin->getSize(gui::EGDS_SCROLLBAR_SIZE);
+	row_rect.UpperLeftCorner.Y += row_min * m_rowheight - scrollpos;
+	row_rect.LowerRightCorner.Y = row_rect.UpperLeftCorner.Y + m_rowheight;
+
+	for (s32 i = row_min; i < row_max; ++i) {
+		Row *row = &m_rows[m_visible_rows[i]];
+		bool is_sel = i == m_selected;
+		video::SColor color = m_color;
+
+		if (is_sel) {
+			skin->draw2DRectangle(this, m_highlight, row_rect, &client_clip);
+			color = m_highlight_text;
+		}
+
+		for (s32 j = 0; j < row->cellcount; ++j)
+			drawCell(&row->cells[j], color, row_rect, client_clip);
+
+		row_rect.UpperLeftCorner.Y += m_rowheight;
+		row_rect.LowerRightCorner.Y += m_rowheight;
+	}
+
+	// Draw children
+	IGUIElement::draw();
+}
+
+void GUITable::drawCell(const Cell *cell, video::SColor color,
+		const core::rect<s32> &row_rect,
+		const core::rect<s32> &client_clip)
+{
+	if ((cell->content_type == COLUMN_TYPE_TEXT)
+			|| (cell->content_type == COLUMN_TYPE_TREE)) {
+
+		core::rect<s32> text_rect = row_rect;
+		text_rect.UpperLeftCorner.X = row_rect.UpperLeftCorner.X
+				+ cell->xpos;
+		text_rect.LowerRightCorner.X = row_rect.UpperLeftCorner.X
+				+ cell->xmax;
+
+		if (cell->color_defined)
+			color = cell->color;
+
+		if (m_font) {
+			if (cell->content_type == COLUMN_TYPE_TEXT)
+				m_font->draw(m_strings[cell->content_index],
+						text_rect, color,
+						false, true, &client_clip);
+			else // tree
+				m_font->draw(cell->content_index ? L"+" : L"-",
+						text_rect, color,
+						false, true, &client_clip);
+		}
+	}
+	else if (cell->content_type == COLUMN_TYPE_IMAGE) {
+
+		if (cell->content_index < 0)
+			return;
+
+		video::IVideoDriver *driver = Environment->getVideoDriver();
+		video::ITexture *image = m_images[cell->content_index];
+
+		if (image) {
+			core::position2d<s32> dest_pos =
+					row_rect.UpperLeftCorner;
+			dest_pos.X += cell->xpos;
+			core::rect<s32> source_rect(
+					core::position2d<s32>(0, 0),
+					image->getOriginalSize());
+			s32 imgh = source_rect.LowerRightCorner.Y;
+			s32 rowh = row_rect.getHeight();
+			if (imgh < rowh)
+				dest_pos.Y += (rowh - imgh) / 2;
+			else
+				source_rect.LowerRightCorner.Y = rowh;
+
+			video::SColor color(255, 255, 255, 255);
+
+			driver->draw2DImage(image, dest_pos, source_rect,
+					&client_clip, color, true);
+		}
+	}
+}
+
+bool GUITable::OnEvent(const SEvent &event)
+{
+	if (!isEnabled())
+		return IGUIElement::OnEvent(event);
+
+	if (event.EventType == EET_KEY_INPUT_EVENT) {
+		if (event.KeyInput.PressedDown && (
+				event.KeyInput.Key == KEY_DOWN ||
+				event.KeyInput.Key == KEY_UP   ||
+				event.KeyInput.Key == KEY_HOME ||
+				event.KeyInput.Key == KEY_END  ||
+				event.KeyInput.Key == KEY_NEXT ||
+				event.KeyInput.Key == KEY_PRIOR)) {
+			s32 offset = 0;
+			switch (event.KeyInput.Key) {
+				case KEY_DOWN:
+					offset = 1;
+					break;
+				case KEY_UP:
+					offset = -1;
+					break;
+				case KEY_HOME:
+					offset = - (s32) m_visible_rows.size();
+					break;
+				case KEY_END:
+					offset = m_visible_rows.size();
+					break;
+				case KEY_NEXT:
+					offset = AbsoluteRect.getHeight() / m_rowheight;
+					break;
+				case KEY_PRIOR:
+					offset = - (s32) (AbsoluteRect.getHeight() / m_rowheight);
+					break;
+				default:
+					break;
+			}
+			s32 old_selected = m_selected;
+			s32 rowcount = m_visible_rows.size();
+			if (rowcount != 0) {
+				m_selected = rangelim(m_selected + offset, 0, rowcount-1);
+				autoScroll();
+			}
+
+			if (m_selected != old_selected)
+				sendTableEvent(0, false);
+
+			return true;
+		}
+		else if (event.KeyInput.PressedDown && (
+				event.KeyInput.Key == KEY_LEFT ||
+				event.KeyInput.Key == KEY_RIGHT)) {
+			// Open/close subtree via keyboard
+			if (m_selected >= 0) {
+				int dir = event.KeyInput.Key == KEY_LEFT ? -1 : 1;
+				toggleVisibleTree(m_selected, dir, true);
+			}
+			return true;
+		}
+		else if (!event.KeyInput.PressedDown && (
+				event.KeyInput.Key == KEY_RETURN ||
+				event.KeyInput.Key == KEY_SPACE)) {
+			sendTableEvent(0, true);
+			return true;
+		}
+		else if (event.KeyInput.Key == KEY_ESCAPE ||
+				event.KeyInput.Key == KEY_SPACE) {
+			// pass to parent
+		}
+		else if (event.KeyInput.PressedDown && event.KeyInput.Char) {
+			// change selection based on text as it is typed
+			s32 now = getTimeMs();
+			if (now - m_keynav_time >= 500)
+				m_keynav_buffer = L"";
+			m_keynav_time = now;
+
+			// add to key buffer if not a key repeat
+			if (!(m_keynav_buffer.size() == 1 &&
+					m_keynav_buffer[0] == event.KeyInput.Char)) {
+				m_keynav_buffer.append(event.KeyInput.Char);
+			}
+
+			// find the selected item, starting at the current selection
+			// dont change selection if the key buffer matches the current item
+			s32 old_selected = m_selected;
+			s32 start = MYMAX(m_selected, 0);
+			s32 rowcount = m_visible_rows.size();
+			for (s32 k = 1; k < rowcount; ++k) {
+				s32 current = start + k;
+				if (current >= rowcount)
+					current -= rowcount;
+				if (doesRowStartWith(getRow(current), m_keynav_buffer)) {
+					m_selected = current;
+					break;
+				}
+			}
+			autoScroll();
+			if (m_selected != old_selected)
+				sendTableEvent(0, false);
+
+			return true;
+		}
+	}
+	if (event.EventType == EET_MOUSE_INPUT_EVENT) {
+		core::position2d<s32> p(event.MouseInput.X, event.MouseInput.Y);
+
+		if (event.MouseInput.Event == EMIE_MOUSE_WHEEL) {
+			m_scrollbar->setPos(m_scrollbar->getPos() +
+					(event.MouseInput.Wheel < 0 ? -1 : 1) *
+					- (s32) m_rowheight / 2);
+			return true;
+		}
+
+		// Find hovered row and cell
+		bool really_hovering = false;
+		s32 row_i = getRowAt(p.Y, really_hovering);
+		const Cell *cell = NULL;
+		if (really_hovering) {
+			s32 cell_j = getCellAt(p.X, row_i);
+			if (cell_j >= 0)
+				cell = &(getRow(row_i)->cells[cell_j]);
+		}
+
+		// Update tooltip
+		setToolTipText(cell ? m_strings[cell->tooltip_index].c_str() : L"");
+
+		if (event.MouseInput.isLeftPressed() &&
+				(isPointInside(p) ||
+				 event.MouseInput.Event == EMIE_MOUSE_MOVED)) {
+			s32 sel_column = 0;
+			bool sel_doubleclick = (event.MouseInput.Event
+					== EMIE_LMOUSE_DOUBLE_CLICK);
+			bool plusminus_clicked = false;
+
+			// For certain events (left click), report column
+			// Also open/close subtrees when the +/- is clicked
+			if (cell && (
+					event.MouseInput.Event == EMIE_LMOUSE_PRESSED_DOWN ||
+					event.MouseInput.Event == EMIE_LMOUSE_DOUBLE_CLICK ||
+					event.MouseInput.Event == EMIE_LMOUSE_TRIPLE_CLICK)) {
+				sel_column = cell->reported_column;
+				if (cell->content_type == COLUMN_TYPE_TREE)
+					plusminus_clicked = true;
+			}
+
+			if (plusminus_clicked) {
+				if (event.MouseInput.Event == EMIE_LMOUSE_PRESSED_DOWN) {
+					toggleVisibleTree(row_i, 0, false);
+				}
+			}
+			else {
+				// Normal selection
+				s32 old_selected = m_selected;
+				m_selected = row_i;
+				autoScroll();
+
+				if (m_selected != old_selected ||
+						sel_column >= 1 ||
+						sel_doubleclick) {
+					sendTableEvent(sel_column, sel_doubleclick);
+				}
+			}
+		}
+		return true;
+	}
+	if (event.EventType == EET_GUI_EVENT &&
+			event.GUIEvent.EventType == gui::EGET_SCROLL_BAR_CHANGED &&
+			event.GUIEvent.Caller == m_scrollbar) {
+		// Don't pass events from our scrollbar to the parent
+		return true;
+	}
+
+	return IGUIElement::OnEvent(event);
+}
+
+/******************************************************************************/
+/* GUITable helper functions                                                  */
+/******************************************************************************/
+
+s32 GUITable::allocString(const std::string &text)
+{
+	std::map<std::string, s32>::iterator it = m_alloc_strings.find(text);
+	if (it == m_alloc_strings.end()) {
+		s32 id = m_strings.size();
+		std::wstring wtext = narrow_to_wide(text);
+		m_strings.push_back(core::stringw(wtext.c_str()));
+		m_alloc_strings.insert(std::make_pair(text, id));
+		return id;
+	}
+	else {
+		return it->second;
+	}
+}
+
+s32 GUITable::allocImage(const std::string &imagename)
+{
+	std::map<std::string, s32>::iterator it = m_alloc_images.find(imagename);
+	if (it == m_alloc_images.end()) {
+		s32 id = m_images.size();
+		m_images.push_back(m_tsrc->getTexture(imagename));
+		m_alloc_images.insert(std::make_pair(imagename, id));
+		return id;
+	}
+	else {
+		return it->second;
+	}
+}
+
+void GUITable::allocationComplete()
+{
+	// Called when done with creating rows and cells from table data,
+	// i.e. when allocString and allocImage won't be called anymore
+	m_alloc_strings.clear();
+	m_alloc_images.clear();
+}
+
+const GUITable::Row* GUITable::getRow(s32 i) const
+{
+	if (i >= 0 && i < (s32) m_visible_rows.size())
+		return &m_rows[m_visible_rows[i]];
+	else
+		return NULL;
+}
+
+bool GUITable::doesRowStartWith(const Row *row, const core::stringw &str) const
+{
+	if (row == NULL)
+		return false;
+
+	for (s32 j = 0; j < row->cellcount; ++j) {
+		Cell *cell = &row->cells[j];
+		if (cell->content_type == COLUMN_TYPE_TEXT) {
+			const core::stringw &cellstr = m_strings[cell->content_index];
+			if (cellstr.size() >= str.size() &&
+					str.equals_ignore_case(cellstr.subString(0, str.size())))
+				return true;
+		}
+	}
+	return false;
+}
+
+s32 GUITable::getRowAt(s32 y, bool &really_hovering) const
+{
+	really_hovering = false;
+
+	s32 rowcount = m_visible_rows.size();
+	if (rowcount == 0)
+		return -1;
+
+	// Use arithmetic to find row
+	s32 rel_y = y - AbsoluteRect.UpperLeftCorner.Y - 1;
+	s32 i = (rel_y + m_scrollbar->getPos()) / m_rowheight;
+
+	if (i >= 0 && i < rowcount) {
+		really_hovering = true;
+		return i;
+	}
+	else if (i < 0)
+		return 0;
+	else
+		return rowcount - 1;
+
+}
+
+s32 GUITable::getCellAt(s32 x, s32 row_i) const
+{
+	const Row *row = getRow(row_i);
+	if (row == NULL)
+		return -1;
+
+	// Use binary search to find cell in row
+	s32 rel_x = x - AbsoluteRect.UpperLeftCorner.X - 1;
+	s32 jmin = 0;
+	s32 jmax = row->cellcount - 1;
+	while (jmin < jmax) {
+		s32 pivot = jmin + (jmax - jmin) / 2;
+		assert(pivot >= 0 && pivot < row->cellcount);
+		const Cell *cell = &row->cells[pivot];
+
+		if (rel_x >= cell->xmin && rel_x <= cell->xmax)
+			return pivot;
+		else if (rel_x < cell->xmin)
+			jmax = pivot - 1;
+		else
+			jmin = pivot + 1;
+	}
+
+	if (jmin >= 0 && jmin < row->cellcount &&
+			rel_x >= row->cells[jmin].xmin &&
+			rel_x <= row->cells[jmin].xmax)
+		return jmin;
+	else
+		return -1;
+}
+
+void GUITable::autoScroll()
+{
+	if (m_selected >= 0) {
+		s32 pos = m_scrollbar->getPos();
+		s32 maxpos = m_selected * m_rowheight;
+		s32 minpos = maxpos - (AbsoluteRect.getHeight() - m_rowheight);
+		if (pos > maxpos)
+			m_scrollbar->setPos(maxpos);
+		else if (pos < minpos)
+			m_scrollbar->setPos(minpos);
+	}
+}
+
+void GUITable::updateScrollBar()
+{
+	s32 totalheight = m_rowheight * m_visible_rows.size();
+	s32 scrollmax = MYMAX(0, totalheight - AbsoluteRect.getHeight());
+	m_scrollbar->setVisible(scrollmax > 0);
+	m_scrollbar->setMax(scrollmax);
+	m_scrollbar->setSmallStep(m_rowheight);
+	m_scrollbar->setLargeStep(2 * m_rowheight);
+}
+
+void GUITable::sendTableEvent(s32 column, bool doubleclick)
+{
+	m_sel_column = column;
+	m_sel_doubleclick = doubleclick;
+	if (Parent) {
+		SEvent e;
+		memset(&e, 0, sizeof e);
+		e.EventType = EET_GUI_EVENT;
+		e.GUIEvent.Caller = this;
+		e.GUIEvent.Element = 0;
+		e.GUIEvent.EventType = gui::EGET_TABLE_CHANGED;
+		Parent->OnEvent(e);
+	}
+}
+
+void GUITable::getOpenedTrees(std::set<s32> &opened_trees) const
+{
+	opened_trees.clear();
+	s32 rowcount = m_rows.size();
+	for (s32 i = 0; i < rowcount - 1; ++i) {
+		if (m_rows[i].indent < m_rows[i+1].indent &&
+				m_rows[i+1].visible_index != -2)
+			opened_trees.insert(i);
+	}
+}
+
+void GUITable::setOpenedTrees(const std::set<s32> &opened_trees)
+{
+	s32 old_selected = getSelected();
+
+	std::vector<s32> parents;
+	std::vector<s32> closed_parents;
+
+	m_visible_rows.clear();
+
+	for (size_t i = 0; i < m_rows.size(); ++i) {
+		Row *row = &m_rows[i];
+
+		// Update list of ancestors
+		while (!parents.empty() && m_rows[parents.back()].indent >= row->indent)
+			parents.pop_back();
+		while (!closed_parents.empty() &&
+				m_rows[closed_parents.back()].indent >= row->indent)
+			closed_parents.pop_back();
+
+		assert(closed_parents.size() <= parents.size());
+
+		if (closed_parents.empty()) {
+			// Visible row
+			row->visible_index = m_visible_rows.size();
+			m_visible_rows.push_back(i);
+		}
+		else if (parents.back() == closed_parents.back()) {
+			// Invisible row, direct parent is closed
+			row->visible_index = -2;
+		}
+		else {
+			// Invisible row, direct parent is open, some ancestor is closed
+			row->visible_index = -1;
+		}
+
+		// If not a leaf, add to parents list
+		if (i < m_rows.size()-1 && row->indent < m_rows[i+1].indent) {
+			parents.push_back(i);
+
+			s32 content_index = 0; // "-", open
+			if (opened_trees.count(i) == 0) {
+				closed_parents.push_back(i);
+				content_index = 1; // "+", closed
+			}
+
+			// Update all cells of type "tree"
+			for (s32 j = 0; j < row->cellcount; ++j)
+				if (row->cells[j].content_type == COLUMN_TYPE_TREE)
+					row->cells[j].content_index = content_index;
+		}
+	}
+
+	updateScrollBar();
+
+	setSelected(old_selected);
+}
+
+void GUITable::openTree(s32 to_open)
+{
+	std::set<s32> opened_trees;
+	getOpenedTrees(opened_trees);
+	opened_trees.insert(to_open);
+	setOpenedTrees(opened_trees);
+}
+
+void GUITable::closeTree(s32 to_close)
+{
+	std::set<s32> opened_trees;
+	getOpenedTrees(opened_trees);
+	opened_trees.erase(to_close);
+	setOpenedTrees(opened_trees);
+}
+
+// The following function takes a visible row index (hidden rows skipped)
+// dir: -1 = left (close), 0 = auto (toggle), 1 = right (open)
+void GUITable::toggleVisibleTree(s32 row_i, int dir, bool move_selection)
+{
+	// Check if the chosen tree is currently open
+	const Row *row = getRow(row_i);
+	if (row == NULL)
+		return;
+
+	bool was_open = false;
+	for (s32 j = 0; j < row->cellcount; ++j) {
+		if (row->cells[j].content_type == COLUMN_TYPE_TREE) {
+			was_open = row->cells[j].content_index == 0;
+			break;
+		}
+	}
+
+	// Check if the chosen tree should be opened
+	bool do_open = !was_open;
+	if (dir < 0)
+		do_open = false;
+	else if (dir > 0)
+		do_open = true;
+
+	// Close or open the tree; the heavy lifting is done by setOpenedTrees
+	if (was_open && !do_open)
+		closeTree(m_visible_rows[row_i]);
+	else if (!was_open && do_open)
+		openTree(m_visible_rows[row_i]);
+
+	// Change selected row if requested by caller,
+	// this is useful for keyboard navigation
+	if (move_selection) {
+		s32 sel = row_i;
+		if (was_open && do_open) {
+			// Move selection to first child
+			const Row *maybe_child = getRow(sel + 1);
+			if (maybe_child && maybe_child->indent > row->indent)
+				sel++;
+		}
+		else if (!was_open && !do_open) {
+			// Move selection to parent
+			assert(getRow(sel) != NULL);
+			while (sel > 0 && getRow(sel - 1)->indent >= row->indent)
+				sel--;
+			sel--;
+			if (sel < 0)  // was root already selected?
+				sel = row_i;
+		}
+		if (sel != m_selected) {
+			m_selected = sel;
+			autoScroll();
+			sendTableEvent(0, false);
+		}
+	}
+}
+
+void GUITable::alignContent(Cell *cell, s32 xmax, s32 content_width, s32 align)
+{
+	// requires that cell.xmin, cell.xmax are properly set
+	// align = 0: left aligned, 1: centered, 2: right aligned, 3: inline
+	if (align == 0) {
+		cell->xpos = cell->xmin;
+		cell->xmax = xmax;
+	}
+	else if (align == 1) {
+		cell->xpos = (cell->xmin + xmax - content_width) / 2;
+		cell->xmax = xmax;
+	}
+	else if (align == 2) {
+		cell->xpos = xmax - content_width;
+		cell->xmax = xmax;
+	}
+	else {
+		// inline alignment: the cells of the column don't have an aligned
+		// right border, the right border of each cell depends on the content
+		cell->xpos = cell->xmin;
+		cell->xmax = cell->xmin + content_width;
+	}
+}