mirror of https://github.com/fltk/fltk
Added sortable table example.
git-svn-id: file:///fltk/svn/fltk/branches/branch-1.3@7926 ea41ed52-d2ee-0310-a9c1-e6b18d33e121
This commit is contained in:
parent
a8a5e3603c
commit
ddf187af37
|
@ -5,6 +5,7 @@ ALL = howto-add_fd-and-popen$(EXEEXT) \
|
|||
howto-text-over-image-button$(EXEEXT) \
|
||||
table-as-container$(EXEEXT) \
|
||||
table-simple$(EXEEXT) \
|
||||
table-sort$(EXEEXT) \
|
||||
table-with-keyboard-nav$(EXEEXT) \
|
||||
tabs-simple$(EXEEXT) \
|
||||
tree-simple$(EXEEXT) \
|
||||
|
|
|
@ -0,0 +1,288 @@
|
|||
//
|
||||
// "$Id$"
|
||||
//
|
||||
// table-sort -- An example application using a sortable Fl_Table
|
||||
//
|
||||
// Example of a non-trivial application that uses Fl_Table
|
||||
// with sortable columns. This example is not trying to be simple,
|
||||
// but to demonstrate the complexities of an actual small app.
|
||||
//
|
||||
// HISTORY
|
||||
// 03/18/2003 -- 'sortapp.cxx' added to the Fl_Table widget package -erco
|
||||
// 11/30/2010 -- Modified and added to FLTK examples -erco
|
||||
//
|
||||
// Copyright 1998-2010 by Bill Spitzak and others.
|
||||
//
|
||||
// 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 on the following page:
|
||||
//
|
||||
// http://www.fltk.org/str.php
|
||||
//
|
||||
|
||||
#include <FL/Fl.H>
|
||||
#include <FL/Fl_Window.H>
|
||||
#include <FL/fl_draw.H>
|
||||
#include <FL/Fl_Table_Row.H>
|
||||
|
||||
#include <stdio.h>
|
||||
#include <string.h>
|
||||
#include <vector>
|
||||
#include <algorithm> // STL sort
|
||||
|
||||
#define MARGIN 20
|
||||
|
||||
#ifdef _WIN32
|
||||
// WINDOWS
|
||||
#define DIRCMD "dir"
|
||||
#define DIRHEADER { "Date", "Time", "Size", "Filename", "", "", "", "", "" }
|
||||
#define popen _popen
|
||||
#else /*_WIN32*/
|
||||
// UNIX
|
||||
#define DIRCMD "ls -l"
|
||||
#define DIRHEADER { "Perms", "#L", "Own", "Group", "Size", "Date", "", "", "Filename" }
|
||||
#endif /*_WIN32*/
|
||||
|
||||
// A single row of columns
|
||||
class Row {
|
||||
public:
|
||||
std::vector<char*> cols;
|
||||
};
|
||||
|
||||
// Sort class to handle sorting column using std::sort
|
||||
class SortColumn {
|
||||
int _col, _reverse;
|
||||
public:
|
||||
SortColumn(int col, int reverse) {
|
||||
_col = col;
|
||||
_reverse = reverse;
|
||||
}
|
||||
bool operator()(const Row &a, const Row &b) {
|
||||
const char *ap = ( _col < (int)a.cols.size() ) ? a.cols[_col] : "",
|
||||
*bp = ( _col < (int)b.cols.size() ) ? b.cols[_col] : "";
|
||||
if ( isdigit(*ap) && isdigit(*bp) ) { // cheezy detection of numeric data
|
||||
// Numeric sort
|
||||
int av=0; sscanf(ap, "%d", &av);
|
||||
int bv=0; sscanf(bp, "%d", &bv);
|
||||
return( _reverse ? av < bv : bv < av );
|
||||
} else {
|
||||
// Alphabetic sort
|
||||
return( _reverse ? strcmp(ap, bp) > 0 : strcmp(ap, bp) < 0 );
|
||||
}
|
||||
}
|
||||
};
|
||||
|
||||
// Derive a custom class from Fl_Table_Row
|
||||
class MyTable : public Fl_Table_Row {
|
||||
private:
|
||||
std::vector<Row> _rowdata; // data in each row
|
||||
int _sort_reverse;
|
||||
int _sort_lastcol;
|
||||
|
||||
static void event_callback(Fl_Widget*, void*);
|
||||
void event_callback2(); // callback for table events
|
||||
|
||||
protected:
|
||||
void draw_cell(TableContext context, int R=0, int C=0, // table cell drawing
|
||||
int X=0, int Y=0, int W=0, int H=0);
|
||||
void sort_column(int col, int reverse=0); // sort table by a column
|
||||
void draw_sort_arrow(int X,int Y,int W,int H,int sort);
|
||||
|
||||
public:
|
||||
// Ctor
|
||||
MyTable(int x, int y, int w, int h, const char *l=0) : Fl_Table_Row(x,y,w,h,l) {
|
||||
_sort_reverse = 0;
|
||||
_sort_lastcol = -1;
|
||||
end();
|
||||
callback(event_callback, (void*)this);
|
||||
}
|
||||
~MyTable() { } // Dtor
|
||||
void load_command(const char *cmd); // Load the output of a command into table
|
||||
void autowidth(int pad); // Automatically set column widths to data
|
||||
void resize_window(); // Resize parent window to size of table
|
||||
};
|
||||
|
||||
// Sort a column up or down
|
||||
void MyTable::sort_column(int col, int reverse) {
|
||||
std::sort(_rowdata.begin(), _rowdata.end(), SortColumn(col, reverse));
|
||||
redraw();
|
||||
}
|
||||
|
||||
// Draw sort arrow
|
||||
void MyTable::draw_sort_arrow(int X,int Y,int W,int H,int sort) {
|
||||
int xlft = X+(W-6)-8;
|
||||
int xctr = X+(W-6)-4;
|
||||
int xrit = X+(W-6)-0;
|
||||
int ytop = Y+(H/2)-4;
|
||||
int ybot = Y+(H/2)+4;
|
||||
if ( _sort_reverse ) {
|
||||
// Engraved down arrow
|
||||
fl_color(FL_WHITE);
|
||||
fl_line(xrit, ytop, xctr, ybot);
|
||||
fl_color(41); // dark gray
|
||||
fl_line(xlft, ytop, xrit, ytop);
|
||||
fl_line(xlft, ytop, xctr, ybot);
|
||||
} else {
|
||||
// Engraved up arrow
|
||||
fl_color(FL_WHITE);
|
||||
fl_line(xrit, ybot, xctr, ytop);
|
||||
fl_line(xrit, ybot, xlft, ybot);
|
||||
fl_color(41); // dark gray
|
||||
fl_line(xlft, ybot, xctr, ytop);
|
||||
}
|
||||
}
|
||||
|
||||
// Handle drawing all cells in table
|
||||
void MyTable::draw_cell(TableContext context, int R, int C, int X, int Y, int W, int H) {
|
||||
const char *s = "";
|
||||
if ( R < (int)_rowdata.size() && C < (int)_rowdata[R].cols.size() )
|
||||
s = _rowdata[R].cols[C];
|
||||
switch ( context ) {
|
||||
case CONTEXT_COL_HEADER:
|
||||
fl_push_clip(X,Y,W,H); {
|
||||
static const char *head[] = DIRHEADER;
|
||||
fl_draw_box(FL_THIN_UP_BOX, X,Y,W,H, FL_BACKGROUND_COLOR);
|
||||
if ( C < 9 ) {
|
||||
fl_font(FL_HELVETICA_BOLD, 16);
|
||||
fl_color(FL_BLACK);
|
||||
fl_draw(head[C], X+2,Y,W,H, FL_ALIGN_LEFT, 0, 0); // +2=pad left
|
||||
// Draw sort arrow
|
||||
if ( C == _sort_lastcol ) {
|
||||
draw_sort_arrow(X,Y,W,H, _sort_reverse);
|
||||
}
|
||||
}
|
||||
}
|
||||
fl_pop_clip();
|
||||
return;
|
||||
case CONTEXT_CELL: {
|
||||
fl_push_clip(X,Y,W,H); {
|
||||
// Bg color
|
||||
Fl_Color bgcolor = row_selected(R) ? selection_color() : FL_WHITE;
|
||||
fl_color(bgcolor); fl_rectf(X,Y,W,H);
|
||||
fl_font(FL_HELVETICA, 16);
|
||||
fl_color(FL_BLACK); fl_draw(s, X+2,Y,W,H, FL_ALIGN_LEFT); // +2=pad left
|
||||
// Border
|
||||
fl_color(FL_LIGHT2); fl_rect(X,Y,W,H);
|
||||
}
|
||||
fl_pop_clip();
|
||||
return;
|
||||
}
|
||||
default:
|
||||
return;
|
||||
}
|
||||
}
|
||||
|
||||
// Automatically set column widths to widest data in each column
|
||||
void MyTable::autowidth(int pad) {
|
||||
fl_font(FL_COURIER, 16);
|
||||
// Initialize all column widths to lowest value
|
||||
for ( int c=0; c<cols(); c++ ) col_width(c, pad);
|
||||
for ( int r=0; r<(int)_rowdata.size(); r++ ) {
|
||||
int w, h;
|
||||
for ( int c=0; c<(int)_rowdata[r].cols.size(); c++ ) {
|
||||
fl_measure(_rowdata[r].cols[c], w, h, 0); // get pixel width of text
|
||||
if ( (w + pad) > col_width(c)) col_width(c, w + pad);
|
||||
}
|
||||
}
|
||||
table_resized();
|
||||
redraw();
|
||||
}
|
||||
|
||||
// Resize parent window to size of table
|
||||
void MyTable::resize_window() {
|
||||
// Determine exact outer width of table with all columns visible
|
||||
int width = 4; // width of table borders
|
||||
for ( int t=0; t<cols(); t++ ) width += col_width(t); // total width of all columns
|
||||
width += MARGIN*2;
|
||||
if ( width < 200 || width > Fl::w() ) return;
|
||||
window()->resize(window()->x(), window()->y(), width, window()->h()); // resize window to fit
|
||||
}
|
||||
|
||||
// Load table with output of 'cmd'
|
||||
void MyTable::load_command(const char *cmd) {
|
||||
char s[512];
|
||||
FILE *fp = popen(cmd, "r");
|
||||
cols(0);
|
||||
for ( int r=0; fgets(s, sizeof(s)-1, fp); r++ ) {
|
||||
// Add a new row
|
||||
Row newrow; _rowdata.push_back(newrow);
|
||||
std::vector<char*> &rc = _rowdata[r].cols;
|
||||
// Break line into separate word 'columns'
|
||||
char *ss;
|
||||
const char *delim = " \t\n";
|
||||
for(int t=0; (t==0)?(ss=strtok(s,delim)):(ss=strtok(NULL,delim)); t++) {
|
||||
rc.push_back(strdup(ss));
|
||||
}
|
||||
// Keep track of max # columns
|
||||
if ( (int)rc.size() > cols() ) {
|
||||
cols((int)rc.size());
|
||||
}
|
||||
}
|
||||
// How many rows we loaded
|
||||
rows((int)_rowdata.size());
|
||||
// Auto-calculate widths, with 20 pixel padding
|
||||
autowidth(20);
|
||||
}
|
||||
|
||||
// Callback whenever someone clicks on different parts of the table
|
||||
void MyTable::event_callback(Fl_Widget*, void *data) {
|
||||
MyTable *o = (MyTable*)data;
|
||||
o->event_callback2();
|
||||
}
|
||||
|
||||
void MyTable::event_callback2() {
|
||||
//int ROW = callback_row(); // unused
|
||||
int COL = callback_col();
|
||||
TableContext context = callback_context();
|
||||
switch ( context ) {
|
||||
case CONTEXT_COL_HEADER: { // someone clicked on column header
|
||||
if ( Fl::event() == FL_RELEASE && Fl::event_button() == 1 ) {
|
||||
if ( _sort_lastcol == COL ) { // Click same column? Toggle sort
|
||||
_sort_reverse ^= 1;
|
||||
} else { // Click diff column? Up sort
|
||||
_sort_reverse = 0;
|
||||
}
|
||||
sort_column(COL, _sort_reverse);
|
||||
_sort_lastcol = COL;
|
||||
}
|
||||
break;
|
||||
}
|
||||
default:
|
||||
return;
|
||||
}
|
||||
}
|
||||
|
||||
int main() {
|
||||
Fl_Window win(900,500,"Table Sorting");
|
||||
MyTable table(MARGIN, MARGIN, win.w()-MARGIN*2, win.h()-MARGIN*2);
|
||||
table.selection_color(FL_YELLOW);
|
||||
table.col_header(1);
|
||||
table.col_resize(1);
|
||||
table.when(FL_WHEN_RELEASE); // handle table events on release
|
||||
table.load_command(DIRCMD); // load table with a directory listing
|
||||
table.row_height_all(18); // height of all rows
|
||||
table.tooltip("Click on column headings to toggle column sorting");
|
||||
table.color(FL_WHITE);
|
||||
win.end();
|
||||
win.resizable(table);
|
||||
table.resize_window();
|
||||
win.show();
|
||||
return(Fl::run());
|
||||
}
|
||||
|
||||
//
|
||||
// End of "$Id$".
|
||||
//
|
Loading…
Reference in New Issue