ref: e447c9fb929e61a40203b0193ee8d4cab8d72f7e
dir: /DoConfig/fltk/examples/table-as-container.cxx/
//
// "$Id$"
//
// Show how FLTK widgets can be parented by Fl_Table. -erco 03/30/2003
//
// Originally the 'widgettable.cxx' example program that came with
// erco's Fl_Table widget. Added to FLTK in 2010.
//
// This demonstrates how to use Fl_Table as a 'container' for FLTK
// widgets; one widget per cell. This isn't optimal for large tables,
// where it's better to make one instance of a widget, and move it to
// where it's needed. For an example of this, see the example program
// "table-spreadsheet.cxx".
//
// Copyright 2010 Greg Ercolano.
// Copyright 1998-2010 by Bill Spitzak and others.
//
// This library is free software. Distribution and use rights are outlined in
// the file "COPYING" which should have been included with this file. If this
// file is missing or damaged, see the license at:
//
// http://www.fltk.org/COPYING.php
//
// Please report all bugs and problems to:
//
// http://www.fltk.org/str.php
//
#include <stdio.h>
#include <FL/Fl.H>
#include <FL/Fl_Double_Window.H>
#include <FL/Fl_Light_Button.H>
#include <FL/Fl_Input.H>
#include <FL/fl_draw.H>
#include <FL/Fl_Table.H>
void button_cb(Fl_Widget *w, void*);
//
// Simple demonstration class deriving from Fl_Table
//
class WidgetTable : public Fl_Table {
protected:
void draw_cell(TableContext context, // table cell drawing
int R=0, int C=0, int X=0, int Y=0, int W=0, int H=0);
public:
WidgetTable(int x, int y, int w, int h, const char *l=0) : Fl_Table(x,y,w,h,l) {
col_header(1);
col_resize(1);
col_header_height(25);
row_header(1);
row_resize(1);
row_header_width(80);
end();
}
~WidgetTable() { }
void SetSize(int newrows, int newcols) {
clear(); // clear any previous widgets, if any
rows(newrows);
cols(newcols);
begin(); // start adding widgets to group
{
for ( int r = 0; r<newrows; r++ ) {
for ( int c = 0; c<newcols; c++ ) {
int X,Y,W,H;
find_cell(CONTEXT_TABLE, r, c, X, Y, W, H);
char s[40];
if ( c & 1 ) {
// Create the input widgets
sprintf(s, "%d.%d", r, c);
Fl_Input *in = new Fl_Input(X,Y,W,H);
in->value(s);
} else {
// Create the light buttons
sprintf(s, "%d/%d ", r, c);
Fl_Light_Button *butt = new Fl_Light_Button(X,Y,W,H,strdup(s));
butt->align(FL_ALIGN_CENTER|FL_ALIGN_INSIDE);
butt->callback(button_cb, (void*)0);
butt->value( ((r+c*2) & 4 ) ? 1 : 0);
}
}
}
}
end();
}
};
// Handle drawing all cells in table
void WidgetTable::draw_cell(TableContext context,
int R, int C, int X, int Y, int W, int H) {
switch ( context ) {
case CONTEXT_STARTPAGE:
fl_font(FL_HELVETICA, 12); // font used by all headers
break;
case CONTEXT_RC_RESIZE: {
int X, Y, W, H;
int index = 0;
for ( int r = 0; r<rows(); r++ ) {
for ( int c = 0; c<cols(); c++ ) {
if ( index >= children() ) break;
find_cell(CONTEXT_TABLE, r, c, X, Y, W, H);
child(index++)->resize(X,Y,W,H);
}
}
init_sizes(); // tell group children resized
return;
}
case CONTEXT_ROW_HEADER:
fl_push_clip(X, Y, W, H);
{
static char s[40];
sprintf(s, "Row %d", R);
fl_draw_box(FL_THIN_UP_BOX, X, Y, W, H, row_header_color());
fl_color(FL_BLACK);
fl_draw(s, X, Y, W, H, FL_ALIGN_CENTER);
}
fl_pop_clip();
return;
case CONTEXT_COL_HEADER:
fl_push_clip(X, Y, W, H);
{
static char s[40];
sprintf(s, "Column %d", C);
fl_draw_box(FL_THIN_UP_BOX, X, Y, W, H, col_header_color());
fl_color(FL_BLACK);
fl_draw(s, X, Y, W, H, FL_ALIGN_CENTER);
}
fl_pop_clip();
return;
case CONTEXT_CELL:
return; // fltk handles drawing the widgets
default:
return;
}
}
void button_cb(Fl_Widget *w, void*) {
fprintf(stderr, "BUTTON: %s\n", (const char*)w->label());
}
int main() {
Fl_Double_Window win(940, 500, "table as container");
WidgetTable table(20, 20, win.w()-40, win.h()-40, "FLTK widget table");
table.SetSize(50, 50);
win.end();
win.resizable(table);
win.show();
return(Fl::run());
}
//
// End of "$Id$".
//