index : minetest.git	gpcf lifo-fixes release
	modified minetest for gpcfs purposes	gpcf

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log msg author committer range

path: root/builtin/game/item_entity.lua

	Commit message (Collapse)	Author	Age
*	Use a settings object for the main settings	ShadowNinja	2017-05-06
| | | | | | |	This unifies the settings APIs. This also unifies the sync and async registration APIs, since the async registration API did not support adding non-functions to the API table.
*	Hardware coloring for itemstacks	Dániel Juhász	2017-04-08
| | | | | | | | | |	Adds the possibility to colorize item stacks based on their metadata. In the item/node definition you can specify palette (an image file) and color (fallback color if the item has no palette or metadata). Then you can add palette_index to the metadata. Dropped itemstacks with different colors do not merge.
*	Item entities: Don't show description as infotext	paramat	2016-05-22
| | | | |	Partially reverts #3547 Infotext remains optional for objects, empty by default
*	Show infotext with description for item entities	RealBadAngel	2016-01-18
|
*	Add the player name to dropped items	Robert Zenz	2015-11-12
| | | | |	The player name is now added in the field "dropped_by" on the created entity.
*	Check if hitter has inventory when punching item	BlockMen	2015-10-25
| | | |	Fixes #3280
*	Some map border related fixes	est31	2015-09-29
| | | | | | | | | | | | |	1. Check for entity addition success in spawn_item implementation 2. Check for success in item_drop callback, so that the player doesn't lose the item if they are outside bounds and try to drop it. 3. When existing player joins game, check that their position is inside map bounds. If not, set their position to the return value of findSpawnPos(). 4. Make findSpawnPos() respect the border 2 fixes a lua crash if a player drops an item outside map bounds. 3 fixes an assertion crash if a player leaves when being outside map bounds, and then rejoins.
*	Don't crash if an item gets dropped into unloaded space	tenplus1	2015-05-15
| | | |	Items dropped into unloaded map space will crash game so here's a fix...
*	Item entity merging refactor	est31	2015-05-15
| | | |	Don't ident too much, and add a comment.
*	Make dropped items larger and rotate faster	Calinou	2014-12-04
| | | |	Signed-off-by: Craig Robbins <kde.psych@gmail.com>
*	Add strict module	ShadowNinja	2014-11-19
| | | |	Also fix leaking globals found by it.
*	Item entity stacks merge on the ground.	RealBadAngel	2014-05-23
| | | |	Add TTL to item entities.
*	Use "core" namespace internally	ShadowNinja	2014-05-08
|
*	Organize builtin into subdirectories	ShadowNinja	2014-05-07

generated by cgit v1.2.3 (git 2.25.1) at 2024-07-14 15:50:19 +0000

/*
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 "client/tile.h"
#include "gettime.h"
#include "util/string.h"
#include "util/numeric.h"
#include "util/string.h" // for parseColorString()
#include "settings.h" // for settings
#include "porting.h" // for dpi
#include "guiscalingfilter.h"

/*
	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();

	core::rect<s32> relative_rect = m_scrollbar->getRelativePosition();
	s32 width = (relative_rect.getWidth()/(2.0/3.0)) * porting::getDisplayDensity() *
			g_settings->getFloat("gui_scaling");
	m_scrollbar->setRelativePosition(core::rect<s32>(
			relative_rect.LowerRightCorner.X-width,relative_rect.UpperLeftCorner.Y,
			relative_rect.LowerRightCorner.X,relative_rect.LowerRightCorner.Y
			));
}

GUITable::~GUITable()
{
	for (size_t i = 0; i < m_rows.size(); ++i)
		delete[] m_rows[i].cells;

	if (m_font)
		m_font->drop();
	
	m_scrollbar->remove();
}

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 &&
				parseColorString(
					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 a stupid error case... (issue #1187)
	if (columns.empty()) {
		TableColumn text_column;
		text_column.type = "text";
		TableColumns new_columns;
		new_columns.push_back(text_column);
		setTable(options, new_columns, content);
		return;
	}

	// 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")
			parseColorString(value, m_color, false);
		else if (name == "background")
			parseColorString(value, m_background, false);
		else if (name == "border")
			m_border = is_yes(value);
		else if (name == "highlight")
			parseColorString(value, m_highlight, false);
		else if (name == "highlight_text")
			parseColorString(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 (parseColorString(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: convert 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 -= 1;
	if (m_scrollbar->isVisible()) {
		client_clip.LowerRightCorner.X =
				m_scrollbar->getAbsolutePosition().UpperLeftCorner.X;
	}
	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
			// don't 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 ? -3 : 3) *
					- (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"");

		// Fix for #1567/#1806:
		// IGUIScrollBar passes double click events to its parent,
		// which we don't want. Detect this case and discard the event
		if (event.MouseInput.Event != EMIE_MOUSE_MOVED &&
				m_scrollbar->isVisible() &&
				m_scrollbar->isPointInside(p))
			return true;

		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;
	}
}