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minetest/src/guiTable.cpp

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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.
*/
#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)
{
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) {
return;
} else if (index < 0) {
index = 0;
} else 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();
}
}
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;
}
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);
}
// 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.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 = -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;
}
}
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