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/*
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.
*/
#ifndef GUITABLE_HEADER
#define GUITABLE_HEADER
#include <map>
#include <set>
#include <string>
#include <vector>
#include <iostream>
#include "irrlichttypes_extrabloated.h"
class ISimpleTextureSource;
/*
A table GUI element for GUIFormSpecMenu.
Sends a EGET_TABLE_CHANGED event to the parent when
an item is selected or double-clicked.
Call checkEvent() to get info.
Credits: The interface and implementation of this class are (very)
loosely based on the Irrlicht classes CGUITable and CGUIListBox.
CGUITable and CGUIListBox are licensed under the Irrlicht license;
they are Copyright (C) 2002-2012 Nikolaus Gebhardt
*/
class GUITable : public gui::IGUIElement
{
public:
/*
Stores dynamic data that should be preserved
when updating a formspec
*/
struct DynamicData
{
s32 selected = 0;
s32 scrollpos = 0;
s32 keynav_time = 0;
core::stringw keynav_buffer;
std::set<s32> opened_trees;
};
/*
An option of the form <name>=<value>
*/
struct Option
{
std::string name;
std::string value;
Option(const std::string &name_, const std::string &value_) :
name(name_),
value(value_)
{}
};
/*
A list of options that concern the entire table
*/
typedef std::vector<Option> TableOptions;
/*
A column with options
*/
struct TableColumn
{
std::string type;
std::vector<Option> options;
};
typedef std::vector<TableColumn> TableColumns;
GUITable(gui::IGUIEnvironment *env,
gui::IGUIElement *parent, s32 id,
core::rect<s32> rectangle,
ISimpleTextureSource *tsrc);
virtual ~GUITable();
/* Split a string of the form "name=value" into name and value */
static Option splitOption(const std::string &str);
/* Set textlist-like options, columns and data */
void setTextList(const std::vector<std::string> &content,
bool transparent);
/* Set generic table options, columns and content */
// Adds empty strings to end of content if there is an incomplete row
void setTable(const TableOptions &options,
const TableColumns &columns,
std::vector<std::string> &content);
/* Clear the table */
void clear();
/* Get info about last event (string such as "CHG:1:2") */
// Call this after EGET_TABLE_CHANGED
std::string checkEvent();
/* Get index of currently selected row (first=1; 0 if none selected) */
s32 getSelected() const;
/* Set currently selected row (first=1; 0 if none selected) */
// If given index is not visible at the moment, select its parent
// Autoscroll to make the selected row fully visible
void setSelected(s32 index);
/* Get selection, scroll position and opened (sub)trees */
DynamicData getDynamicData() const;
/* Set selection, scroll position and opened (sub)trees */
void setDynamicData(const DynamicData &dyndata);
/* Returns "GUITable" */
virtual const c8* getTypeName() const;
/* Must be called when position or size changes */
virtual void updateAbsolutePosition();
/* Irrlicht draw method */
virtual void draw();
/* Irrlicht event handler */
virtual bool OnEvent(const SEvent &event);
protected:
enum ColumnType {
COLUMN_TYPE_TEXT,
COLUMN_TYPE_IMAGE,
COLUMN_TYPE_COLOR,
COLUMN_TYPE_INDENT,
COLUMN_TYPE_TREE,
};
struct Cell {
s32 xmin;
s32 xmax;
s32 xpos;
ColumnType content_type;
s32 content_index;
s32 tooltip_index;
video::SColor color;
bool color_defined;
s32 reported_column;
};
struct Row {
Cell *cells;
s32 cellcount;
s32 indent;
// visible_index >= 0: is index of row in m_visible_rows
// visible_index == -1: parent open but other ancestor closed
// visible_index == -2: parent closed
s32 visible_index;
};
// Texture source
ISimpleTextureSource *m_tsrc;
// Table content (including hidden rows)
std::vector<Row> m_rows;
// Table content (only visible; indices into m_rows)
std::vector<s32> m_visible_rows;
bool m_is_textlist = false;
bool m_has_tree_column = false;
// Selection status
s32 m_selected = -1; // index of row (1...n), or 0 if none selected
s32 m_sel_column = 0;
bool m_sel_doubleclick = false;
// Keyboard navigation stuff
u64 m_keynav_time = 0;
core::stringw m_keynav_buffer = L"";
// Drawing and geometry information
bool m_border = true;
video::SColor m_color = video::SColor(255, 255, 255, 255);
video::SColor m_background = video::SColor(255, 0, 0, 0);
video::SColor m_highlight = video::SColor(255, 70, 100, 50);
video::SColor m_highlight_text = video::SColor(255, 255, 255, 255);
s32 m_rowheight = 1;
gui::IGUIFont *m_font = nullptr;
gui::IGUIScrollBar *m_scrollbar = nullptr;
// Allocated strings and images
std::vector<core::stringw> m_strings;
std::vector<video::ITexture*> m_images;
std::map<std::string, s32> m_alloc_strings;
std::map<std::string, s32> m_alloc_images;
s32 allocString(const std::string &text);
s32 allocImage(const std::string &imagename);
void allocationComplete();
// Helper for draw() that draws a single cell
void drawCell(const Cell *cell, video::SColor color,
const core::rect<s32> &rowrect,
const core::rect<s32> &client_clip);
// Returns the i-th visible row (NULL if i is invalid)
const Row *getRow(s32 i) const;
// Key navigation helper
bool doesRowStartWith(const Row *row, const core::stringw &str) const;
// Returns the row at a given screen Y coordinate
// Returns index i such that m_rows[i] is valid (or -1 on error)
s32 getRowAt(s32 y, bool &really_hovering) const;
// Returns the cell at a given screen X coordinate within m_rows[row_i]
// Returns index j such that m_rows[row_i].cells[j] is valid
// (or -1 on error)
s32 getCellAt(s32 x, s32 row_i) const;
// Make the selected row fully visible
void autoScroll();
// Should be called when m_rowcount or m_rowheight changes
void updateScrollBar();
// Sends EET_GUI_EVENT / EGET_TABLE_CHANGED to parent
void sendTableEvent(s32 column, bool doubleclick);
// Functions that help deal with hidden rows
// The following functions take raw row indices (hidden rows not skipped)
void getOpenedTrees(std::set<s32> &opened_trees) const;
void setOpenedTrees(const std::set<s32> &opened_trees);
void openTree(s32 to_open);
void closeTree(s32 to_close);
// The following function takes a visible row index (hidden rows skipped)
// dir: -1 = left (close), 0 = auto (toggle), 1 = right (open)
void toggleVisibleTree(s32 row_i, int dir, bool move_selection);
// Aligns cell content in column according to alignment specification
// align = 0: left aligned, 1: centered, 2: right aligned, 3: inline
static void alignContent(Cell *cell, s32 xmax, s32 content_width,
s32 align);
};
#endif
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