src/threading

/*
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 <cstring>
#include <IGUISkin.h>
#include <IGUIFont.h>
#include "client/renderingengine.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 "client/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)
{
	assert(tsrc != NULL);

	gui::IGUISkin* skin = Environment->getSkin();

	m_font = skin->getFont();
	if (m_font) {
		m_font->grab();
		m_rowheight = m_font->getDimension(L"Ay").Height + 4;
		m_rowheight = MYMAX(m_rowheight, 1);
	}

	const s32 s = skin->getSize(gui::EGDS_SCROLLBAR_SIZE);
	m_scrollbar = new GUIScrollBar(Environment, this, -1,
			core::rect<s32>(RelativeRect.getWidth() - s,
					0,
					RelativeRect.getWidth(),
					RelativeRect.getHeight()),
			false, true);
	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();
#ifdef HAVE_TOUCHSCREENGUI
	float density = 1; // dp scaling is applied by the skin
#else
	float density = RenderingEngine::getDisplayDensity();
#endif
	core::rect<s32> relative_rect = m_scrollbar->getRelativePosition();
	s32 width = (relative_rect.getWidth() / (2.0 / 3.0)) * density *
			g_settings->getFloat("gui_scaling", 0.5f, 20.0f);
	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 (GUITable::Row &row : m_rows)
		delete[] row.cells;

	if (m_font)
		m_font->drop();

	if (m_scrollbar)
		m_scrollbar->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, "");

	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 (const Option &option : options) {
		const std::string &name = option.name;
		const std::string &value = option.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.emplace_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 (const Option &option : columns[j].options) {
			const std::string &name = option.name;
			const std::string &value = option.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;
		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.emplace_back(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 (GUITable::Row &row : m_rows)
		delete[] row.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)
{
	s32 old_selected = m_selected;

	m_selected = -1;
	m_sel_column = 0;
	m_sel_doubleclick = false;

	--index; // Switch from 1-based indexing to 0-based indexing

	s32 rowcount = m_rows.size();
	if (rowcount == 0 || index < 0) {
		return;
	}

	if (index >= rowcount) {
		index = rowcount - 1;
	}

	// If the selected row is not visible, open its ancestors to make it visible
	bool selection_invisible = m_rows[index].visible_index < 0;
	if (selection_invisible) {
		std::set<s32> opened_trees;
		getOpenedTrees(opened_trees);
		s32 indent = m_rows[index].indent;
		for (s32 j = index - 1; j >= 0; --j) {
			if (m_rows[j].indent < indent) {
				opened_trees.insert(j);
				indent = m_rows[j].indent;
			}
		}
		setOpenedTrees(opened_trees);
	}

	if (index >= 0) {
		m_selected = m_rows[index].visible_index;
		assert(m_selected >= 0 && m_selected < (s32) m_visible_rows.size());
	}

	if (m_selected != old_selected || selection_invisible) {
		autoScroll();
	}
}

void GUITable::setOverrideFont(IGUIFont *font)
{
	if (m_font == font)
		return;

	if (font == nullptr)
		font = Environment->getSkin()->getFont();

	if (m_font)
		m_font->drop();

	m_font = font;
	m_font->grab();

	m_rowheight = m_font->getDimension(L"Ay").Height + 4;
	m_rowheight = MYMAX(m_rowheight, 1);

	updateScrollBar();
}

IGUIFont *GUITable::getOverrideFont() const
{
	return m_font;
}

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;

	setSelected(dyndata.selected);
	m_sel_column = 0;
	m_sel_doubleclick = false;

	m_scrollbar->setPos(dyndata.scrollpos);
}

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;
		}

		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
			u64 now = porting::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);
				}

				// Treeview: double click opens/closes trees
				if (m_has_tree_column && sel_doubleclick) {
					toggleVisibleTree(m_selected, 0, false);
				}
			}
		}
		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 = utf8_to_wide(text);
		m_strings.emplace_back(wtext.c_str());
		m_alloc_strings.insert(std::make_pair(text, id));
		return id;
	}

	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;
	}

	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]];

	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;
	}
	if (i < 0)
		return 0;

	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;

		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;

	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);
	m_scrollbar->setPageSize(totalheight);
}

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 = -1;
	if (m_selected >= 0)
		old_selected = m_visible_rows[m_selected];

	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();

	// m_selected must be updated since it is a visible row index
	if (old_selected >= 0)
		m_selected = m_rows[old_selected].visible_index;
}

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;
	}
}
	Commit message (Collapse)	Author	Age
*	Fix 5 issues reported by PVS studio	Loic Blot	2018-04-04
\| \| \| \| \| \| \| \|	* src/sky.cpp 146 warn V519 The 'suncolor_f.r' variable is assigned values twice successively. Perhaps this is a mistake. Check lines: 142, 146. * src/sky.cpp 147 warn V519 The 'suncolor_f.g' variable is assigned values twice successively. Perhaps this is a mistake. Check lines: 143, 147. * src/sky.cpp 148 warn V519 The 'suncolor_f.b' variable is assigned values twice successively. Perhaps this is a mistake. Check lines: 144, 148. * src/threading/thread.cpp 63 err V730 Not all members of a class are initialized inside the constructor. Consider inspecting: m_thread_obj. * src/server.cpp 3243 err V595 The 'log' pointer was utilized before it was verified against nullptr. Check lines: 3243, 3258.
*	Thread: fix a crash on Windows due to data race condition on ↵	Loïc Blot	2017-10-10
\| \| \| \|	Thread::m_start_finished_mutex (#6515)
*	Code modernization: subfolders (#6283)	Loïc Blot	2017-08-19
\| \| \| \| \| \| \| \| \| \| \| \| \|	* Code modernization: subfolders Modernize various code on subfolders client, network, script, threading, unittests, util * empty function * default constructor/destructor * for range-based loops * use emplace_back instead of push_back * C++ STL header style * Make connection.cpp readable in a pointed place + typo
*	C++ modernize: Pragma once (#6264)	Loïc Blot	2017-08-17
\| \| \| \|	* Migrate cpp headers to pragma once
*	Fix msvc annoyances (#5963)	adrido	2017-06-27
\| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \|	* MSVC: Fix '/std:c++11' is not a valid compiler option * MSVC/MINGW: Define 'WIN32_LEAN_AND_MEAN' for the whole project In some obscure cases 'Windows.h" got includet before that definition, which leaded to compilation warnings+errors * MSVC: '/arch:SSE' is only available for x86 * MSVC: Fix float conversation * MSVC/MINGW: use winthreads on Windows * MSVC: 'USE_CMAKE_CONFIG' might be already definied by CMake build system * MSVC: Use all available cpu cores for compiling * Add missing include ctime and use std::time_t
*	C++11 cleanup on constructors (#6000)	Vincent Glize	2017-06-19
\| \| \| \|	* C++11 cleanup on constructors dir script
*	Remove threads.h and replace its definitions with their C++11 equivalents ↵	ShadowNinja	2017-06-11
\| \| \| \| \| \|	(#5957) This also changes threadProc's signature, since C++11 supports arbitrary thread function signatures.
*	C++11 patchset 5: use std::threads and remove old compat layer (#5928)	Loïc Blot	2017-06-08
\| \| \| \| \| \| \|	* C++11 patchset 5: use std::threads and remove old compat layer * use pragma once in modified headers * use C++11 function delete for object copy
*	Use C++11 mutexes only (remove compat code) (#5922)	Loïc Blot	2017-06-06
\| \| \| \|	* Fix event LINT & remove default constructor/destructors * remove compat code & modernize autolock header
*	C++11 patchset 3: remove Atomic/GenericAtomic and use std::atomic (#5906)	Loïc Blot	2017-06-06
\|
*	Fix uninitalised variable in event.cpp (#5764)	Zeno-	2017-05-15
\|
*	Pass clang-format on 14 trivial header files fixes	Loic Blot	2017-04-07
\| \| \| \|	Also remove them from whitelist
*	Fix AIX threading build	ShadowNinja	2017-01-28
\|
*	Fix synchronization issue at thread start	ShadowNinja	2017-01-28
\| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \|	If a newly spawned thread called getThreadId or getThreadHandle before the spawning thread finished saving the thread handle, then the handle/id would be used uninitialized. This would cause the threading tests to fail since isCurrentThread would return false, and if Minetest is built with C++11 support the std::thread object pointer would be dereferenced while ininitialized, causing a segmentation fault. This fixes the issue by using a mutex to force the spawned thread to wait for the spawning thread to finish initializing the thread object. An alternative way to handle this would be to also set the thread handle/id in the started thread but this wouldn't work for C++11 builds because there's no way to get the partially constructed object.
*	Fix C++11 Windows build of threading code	sfan5	2016-10-06
\| \| \| \| \| \| \|	The initial problem was that mutex_auto_lock.h tries to use std::unique_lock<std::mutex> despite mutex.h not using C++11's std::mutex on Windows. The problem here is the mismatch between C++11 usage conditions of the two headers. This commit moves the decision logic to threads.h and makes sure mutex.h, mutex_auto_lock.h and event.h all use the same features.
*	Fix & make linux conditionals uniform (#4278)	Rogier-5	2016-07-04
\| \| \| \| \| \| \| \|	The source used a hodge-podge of different combinations of different macros to check for linux: 'linux', '__linux', '__linux__'. As '__linux__' is standard (Posix), and the others are not, the source now uniformly uses __linux__. If either linux or __linux are defined, it is made sure that __linux__ is defined as well.
*	Fix Windows build	Craig Robbins	2016-05-02
\| \| \| \| \|	Fixes the issue introduced by c1a0ebb (Fix use of uninitialised variable in class Event) causing Windows builds to fail
*	Fix use of uninitialised variable in class Event	Craig Robbins	2016-05-01
\|
*	Fix POSIX C++11 build	ShadowNinja	2016-04-30
\| \| \| \|	I broke this in 46fd114e9a4e05b74576dce682e24357363298e7.
*	Fix prepreprocessor error in thread.h (related to C++11 threads)	Craig Robbins	2016-04-30
\|
*	Fix race on thread creation	ShadowNinja	2016-04-28
\| \| \| \|	This often broke the threading tests on OSX.
*	Fix C++11 compilability	est31	2016-01-23
\| \| \| \|	Previous commits broke it... :(
*	Fix events on Windows	BlockMen	2015-12-11
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*	Fix Event implementation	ShadowNinja	2015-12-07
\| \| \| \| \| \|	On non-windows platforms this just used a semaphore, which meant that multiple calls to signal() would result in wait() returning multiple times.
*	Fix misc. MinGW and Valgrind warnings	kwolekr	2015-11-08
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*	Time: use locks again	est31	2015-11-04
\| \| \| \| \| \| \| \| \| \| \| \| \| \| \|	The Atomic implementation was only partially correct, and was very complex. Use locks for sake of simplicity, following KISS principle. Only remaining atomic operation use is time of day speed, because that really is only read + written. Also fixes a bug with m_time_conversion_skew only being decremented, never incremented (Regresion from previous commit). atomic.h changes: * Add GenericAtomic<T> class for non-integral types like floats. * Remove some last remainders from atomic.h of the volatile use.
*	Atomic: cleanup and add more operations	est31	2015-11-03
\| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \|	Cleanup: * Remove volatile keyword, it is of no use at all. [1] * Remove the enable_if stuff. It had no use either. The most likely explanation why the enable_if stuff was there is that it was used as something like a STATIC_ASSERT to verify that sizeof(T) is not larger than sizeof(void ). This check however is not just misplaced in a place where we already use a lock, it isn't needed at all, as gcc will just generate a call to to the runtime if it compiles for platforms that don't support atomic instructions. The runtime will then most likely use locks. Code style fixes: Prefix name of the mutex * Line everything up nicely, where it makes things look nice * Filling \ continuations with spaces is code style rule Added operations on the atomic var: * Compare and swap * Swap The second point of the cleanup also fixes the Android build of the next commit. [1]: http://stackoverflow.com/q/2484980
*	Rename and move basicmacros.h to util/basic_macros.h	est31	2015-11-02
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*	Fix Lua scripting synchronization	kwolekr	2015-11-01
\| \| \| \| \| \| \|	For several years now, the lua script lock has been completely broken. This commit fixes the main issue (creation of a temporary rather than scoped object), and fixes a subsequent deadlock issue caused by nested script API calls by adding support for recursive mutexes.
*	Fix C++11 compatibility	kwolekr	2015-10-31
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*	Add DISABLE_CLASS_COPY macro (and use it)	kwolekr	2015-10-27
\| \| \| \| \| \| \| \| \|	Use this macro to disallow copying of an object using the assignment operator or copy constructor. This catches otherwise silent-but-deadly mistakes such as "ServerMap map = env->getMap();" at compile time. If so desired, it is still possible to copy a class, but it now requires an explicit call to memcpy or std::copy.
*	Fix some threading things and add additional thread unittests	kwolekr	2015-10-24
\| \| \| \| \| \|	- Fix thread name reset on start() - Fully reset thread state on kill() - Add unittests to check for correct object states under various circumstances
*	Fix == to =	Rui	2015-10-17
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*	Fix missing include on AIX	kwolekr	2015-10-17
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*	Refactor Thread class to improve readability and portability	kwolekr	2015-10-16
\| \| \| \| \| \| \| \| \|	- Fix some incompatibilities with obscure platforms (AIX and WinCE) - Clean up Thread class interface - Add m_ prefix to private member variables - Simplify platform-dependent logic, reducing preprocessor conditional clauses and improving readibility - Add Thread class documentation
*	Refactor logging	ShadowNinja	2015-10-14
\| \| \| \| \| \| \| \| \|	- Add warning log level - Change debug_log_level setting to enumeration string - Map Irrlicht log events to MT log events - Encapsulate log_* functions and global variables into a class, Logger - Unify dstream with standard logging mechanism - Unify core.debug() with standard core.log() script API
*	Fix MinGW 32-bit build	ShadowNinja	2015-10-03
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*	Fix building on OSX, broken since "Clean up threading"	Pavel Puchkin	2015-09-06
\| \| \| \| \| \| \| \| \| \| \| \|	Commit e4bff8be94c0db4f94e63ad448d0eeb869ccdbbd - Clean up threading by @ShadowNinja has broken the OSX build. Including things inside a namespace isn't good. Also fixes #3124.
*	Clean up threading	ShadowNinja	2015-08-23
	* Rename everything. * Strip J prefix. * Change UpperCamelCase functions to lowerCamelCase. * Remove global (!) semaphore count mutex on OSX. * Remove semaphore count getter (unused, unsafe, depended on internal API functions on Windows, and used a hack on OSX). * Add `Atomic<type>`. * Make `Thread` handle thread names. * Add support for C++11 multi-threading. * Combine pthread and win32 sources. * Remove `ThreadStarted` (unused, unneeded). * Move some includes from the headers to the sources. * Move all of `Event` into its header (allows inlining with no new includes). * Make `Event` use `Semaphore` (except on Windows). * Move some porting functions into `Thread`. * Integrate logging with `Thread`. * Add threading test.