317 lines
9.1 KiB
C++
317 lines
9.1 KiB
C++
//
|
|
// "$Id: Fl_Table_Row.cxx 7950 2010-12-05 01:22:53Z greg.ercolano $"
|
|
//
|
|
// Fl_Table_Row -- A row oriented table widget
|
|
//
|
|
// A class specializing in a table of rows.
|
|
// Handles row-specific selection behavior.
|
|
//
|
|
// Copyright 2002 by Greg Ercolano.
|
|
//
|
|
// This library is free software; you can redistribute it and/or
|
|
// modify it under the terms of the GNU Library General Public
|
|
// License as published by the Free Software Foundation; either
|
|
// version 2 of the License, or (at your option) any later version.
|
|
//
|
|
// This library 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
|
|
// Library General Public License for more details.
|
|
//
|
|
// You should have received a copy of the GNU Library General Public
|
|
// License along with this library; if not, write to the Free Software
|
|
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
|
|
// USA.
|
|
//
|
|
// Please report all bugs and problems to "erco at seriss dot com".
|
|
//
|
|
//
|
|
// TODO:
|
|
// o Row headings (only column headings supported currently)
|
|
//
|
|
|
|
#include <stdio.h> // for debugging
|
|
#include <FL/Fl.H>
|
|
#include <FL/fl_draw.H>
|
|
#include <FL/Fl_Table_Row.H>
|
|
|
|
// Is row selected?
|
|
int Fl_Table_Row::row_selected(int row) {
|
|
if ( row < 0 || row >= rows() ) return(-1);
|
|
return(_rowselect[row]);
|
|
}
|
|
|
|
// Change row selection type
|
|
void Fl_Table_Row::type(TableRowSelectMode val) {
|
|
_selectmode = val;
|
|
switch ( _selectmode ) {
|
|
case SELECT_NONE: {
|
|
for ( int row=0; row<rows(); row++ ) {
|
|
_rowselect[row] = 0;
|
|
}
|
|
redraw();
|
|
break;
|
|
}
|
|
case SELECT_SINGLE: {
|
|
int count = 0;
|
|
for ( int row=0; row<rows(); row++ ) {
|
|
if ( _rowselect[row] ) {
|
|
if ( ++count > 1 ) { // only one allowed
|
|
_rowselect[row] = 0;
|
|
}
|
|
}
|
|
}
|
|
redraw();
|
|
break;
|
|
}
|
|
case SELECT_MULTI:
|
|
break;
|
|
}
|
|
}
|
|
|
|
// Change selection state for row
|
|
//
|
|
// flag:
|
|
// 0 - clear selection
|
|
// 1 - set selection
|
|
// 2 - toggle selection
|
|
//
|
|
// Returns:
|
|
// 0 - selection state did not change
|
|
// 1 - selection state changed
|
|
// -1 - row out of range or incorrect selection mode
|
|
//
|
|
int Fl_Table_Row::select_row(int row, int flag) {
|
|
int ret = 0;
|
|
if ( row < 0 || row >= rows() ) { return(-1); }
|
|
switch ( _selectmode ) {
|
|
case SELECT_NONE:
|
|
return(-1);
|
|
|
|
case SELECT_SINGLE: {
|
|
int oldval;
|
|
for ( int t=0; t<rows(); t++ ) {
|
|
if ( t == row ) {
|
|
oldval = _rowselect[row];
|
|
if ( flag == 2 ) { _rowselect[row] ^= 1; }
|
|
else { _rowselect[row] = flag; }
|
|
if ( oldval != _rowselect[row] ) {
|
|
redraw_range(row, row, leftcol, rightcol);
|
|
ret = 1;
|
|
}
|
|
}
|
|
else if ( _rowselect[t] ) {
|
|
_rowselect[t] = 0;
|
|
redraw_range(t, t, leftcol, rightcol);
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
|
|
case SELECT_MULTI: {
|
|
int oldval = _rowselect[row];
|
|
if ( flag == 2 ) { _rowselect[row] ^= 1; }
|
|
else { _rowselect[row] = flag; }
|
|
if ( _rowselect[row] != oldval ) { // select state changed?
|
|
if ( row >= toprow && row <= botrow ) { // row visible?
|
|
// Extend partial redraw range
|
|
redraw_range(row, row, leftcol, rightcol);
|
|
}
|
|
ret = 1;
|
|
}
|
|
}
|
|
}
|
|
return(ret);
|
|
}
|
|
|
|
// Select all rows to a known state
|
|
void Fl_Table_Row::select_all_rows(int flag) {
|
|
switch ( _selectmode ) {
|
|
case SELECT_NONE:
|
|
return;
|
|
|
|
case SELECT_SINGLE:
|
|
if ( flag != 0 ) return;
|
|
//FALLTHROUGH
|
|
|
|
case SELECT_MULTI: {
|
|
char changed = 0;
|
|
if ( flag == 2 ) {
|
|
for ( int row=0; row<(int)_rowselect.size(); row++ ) {
|
|
_rowselect[row] ^= 1;
|
|
}
|
|
changed = 1;
|
|
} else {
|
|
for ( int row=0; row<(int)_rowselect.size(); row++ ) {
|
|
changed |= (_rowselect[row] != flag)?1:0;
|
|
_rowselect[row] = flag;
|
|
}
|
|
}
|
|
if ( changed ) {
|
|
redraw();
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// Set number of rows
|
|
void Fl_Table_Row::rows(int val) {
|
|
Fl_Table::rows(val);
|
|
while ( val > (int)_rowselect.size() ) { _rowselect.push_back(0); } // enlarge
|
|
while ( val < (int)_rowselect.size() ) { _rowselect.pop_back(); } // shrink
|
|
}
|
|
|
|
// #include "eventnames.h" // debugging
|
|
// #include <stdio.h>
|
|
|
|
// Handle events
|
|
int Fl_Table_Row::handle(int event) {
|
|
|
|
// fprintf(stderr, "** EVENT: %s: EVENT XY=%d,%d\n",
|
|
// eventnames[event], Fl::event_x(), Fl::event_y()); // debugging
|
|
|
|
// Let base class handle event
|
|
int ret = Fl_Table::handle(event);
|
|
|
|
// The following code disables cell selection.. why was it added? -erco 05/18/03
|
|
// if ( ret ) { _last_y = Fl::event_y(); return(1); } // base class 'handled' it (eg. column resize)
|
|
|
|
int shiftstate = (Fl::event_state() & FL_CTRL) ? FL_CTRL :
|
|
(Fl::event_state() & FL_SHIFT) ? FL_SHIFT : 0;
|
|
|
|
// Which row/column are we over?
|
|
int R, C; // row/column being worked on
|
|
ResizeFlag resizeflag; // which resizing area are we over? (0=none)
|
|
TableContext context = cursor2rowcol(R, C, resizeflag);
|
|
switch ( event ) {
|
|
case FL_PUSH:
|
|
if ( Fl::event_button() == 1 ) {
|
|
_last_push_x = Fl::event_x(); // save regardless of context
|
|
_last_push_y = Fl::event_y(); // " "
|
|
|
|
// Handle selection in table.
|
|
// Select cell under cursor, and enable drag selection mode.
|
|
//
|
|
if ( context == CONTEXT_CELL ) {
|
|
// Ctrl key? Toggle selection state
|
|
switch ( shiftstate ) {
|
|
case FL_CTRL:
|
|
select_row(R, 2); // toggle
|
|
break;
|
|
|
|
case FL_SHIFT: {
|
|
select_row(R, 1);
|
|
if ( _last_row > -1 ) {
|
|
int srow = R, erow = _last_row;
|
|
if ( srow > erow ) {
|
|
srow = _last_row;
|
|
erow = R;
|
|
}
|
|
for ( int row = srow; row <= erow; row++ ) {
|
|
select_row(row, 1);
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
|
|
default:
|
|
select_all_rows(0); // clear all previous selections
|
|
select_row(R, 1);
|
|
break;
|
|
}
|
|
|
|
_last_row = R;
|
|
_dragging_select = 1;
|
|
ret = 1; // FL_PUSH handled (ensures FL_DRAG will be sent)
|
|
// redraw(); // redraw() handled by select_row()
|
|
}
|
|
}
|
|
break;
|
|
|
|
case FL_DRAG: {
|
|
if ( _dragging_select ) {
|
|
// Dragged off table edges? Handle scrolling
|
|
int offtop = toy - _last_y; // >0 if off top of table
|
|
int offbot = _last_y - (toy + toh); // >0 if off bottom of table
|
|
|
|
if ( offtop > 0 && row_position() > 0 ) {
|
|
// Only scroll in upward direction
|
|
int diff = _last_y - Fl::event_y();
|
|
if ( diff < 1 ) {
|
|
ret = 1;
|
|
break;
|
|
}
|
|
row_position(row_position() - diff);
|
|
context = CONTEXT_CELL; C = 0; R = row_position(); // HACK: fake it
|
|
if ( R < 0 || R > rows() ) { ret = 1; break; } // HACK: ugly
|
|
}
|
|
else if ( offbot > 0 && botrow < rows() ) {
|
|
// Only scroll in downward direction
|
|
int diff = Fl::event_y() - _last_y;
|
|
if ( diff < 1 ) {
|
|
ret = 1;
|
|
break;
|
|
}
|
|
row_position(row_position() + diff);
|
|
context = CONTEXT_CELL; C = 0; R = botrow; // HACK: fake it
|
|
if ( R < 0 || R > rows() ) { ret = 1; break; } // HACK: ugly
|
|
}
|
|
if ( context == CONTEXT_CELL ) {
|
|
switch ( shiftstate ) {
|
|
case FL_CTRL:
|
|
if ( R != _last_row ) { // toggle if dragged to new row
|
|
select_row(R, 2); // 2=toggle
|
|
}
|
|
break;
|
|
|
|
case FL_SHIFT:
|
|
default:
|
|
select_row(R, 1);
|
|
if ( _last_row > -1 ) {
|
|
int srow = R, erow = _last_row;
|
|
if ( srow > erow ) {
|
|
srow = _last_row;
|
|
erow = R;
|
|
}
|
|
for ( int row = srow; row <= erow; row++ ) {
|
|
select_row(row, 1);
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
ret = 1; // drag handled
|
|
_last_row = R;
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
|
|
case FL_RELEASE:
|
|
if ( Fl::event_button() == 1 ) {
|
|
_dragging_select = 0;
|
|
ret = 1; // release handled
|
|
// Clicked off edges of data table?
|
|
// A way for user to clear the current selection.
|
|
//
|
|
int databot = tiy + table_h,
|
|
dataright = tix + table_w;
|
|
if (
|
|
( _last_push_x > dataright && Fl::event_x() > dataright ) ||
|
|
( _last_push_y > databot && Fl::event_y() > databot )
|
|
) {
|
|
select_all_rows(0); // clear previous selections
|
|
}
|
|
}
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
_last_y = Fl::event_y();
|
|
return(ret);
|
|
}
|
|
|
|
//
|
|
// End of "$Id: Fl_Table_Row.cxx 7950 2010-12-05 01:22:53Z greg.ercolano $".
|
|
//
|