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//
// "$Id$"
//
// Fl_Tree as a container of Fl_Table's. - erco 04/25/2012
//
// Demonstrates how one can make a tree where each item
// contains a complex widget.
//
// Copyright 2010,2012 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 on the following page:
//
// http://www.fltk.org/str.php
//
#include <stdio.h>
#include <math.h> // powf()
#include <FL/Fl.H>
#include <FL/Fl_Double_Window.H>
#include <FL/Fl_Tree.H>
#include <FL/Fl_Table.H>
#ifndef PI
#define PI 3.14159
#endif
#if FLTK_ABI_VERSION >= 10301
class MyTable : public Fl_Table {
const char *mode;
public:
MyTable(int X,int Y,int W,int H,const char *mode) : Fl_Table(X,Y,W,H) {
rows(11); row_height_all(20); row_header(1);
cols(11); col_width_all(60); col_header(1);
col_resize(1); // enable column resizing
this->mode = mode;
end();
}
void resize(int X,int Y,int W,int H) {
if ( W > 718 ) W = 718; // don't exceed 700 in width
Fl_Table::resize(X,Y,W,h()); // disallow changes in height
}
// Handle drawing table's cells
// Fl_Table calls this function to draw each visible cell in the table.
// It's up to us to use FLTK's drawing functions to draw the cells the way we want.
//
void draw_cell(TableContext context, int ROW, int COL, int X, int Y, int W, int H) {
static char s[40];
switch ( context ) {
case CONTEXT_STARTPAGE: // before page is drawn..
fl_font(FL_HELVETICA, 10); // set the font for our drawing operations
return;
case CONTEXT_COL_HEADER: // Drawing column/row headers
case CONTEXT_ROW_HEADER: {
int val = context==CONTEXT_COL_HEADER ? COL : ROW;
int col = context==CONTEXT_COL_HEADER ? col_header_color() : row_header_color();
fl_push_clip(X,Y,W,H);
if ( strcmp(mode, "SinCos" ) == 0 ) { sprintf(s, "%.2f", ((val/10.0)*PI)); }
else sprintf(s,"%d",val);
fl_draw_box(FL_THIN_UP_BOX, X,Y,W,H, col);
fl_color(FL_BLACK);
fl_draw(s, X,Y,W,H, FL_ALIGN_CENTER);
fl_pop_clip();
return;
}
case CONTEXT_CELL: { // Draw data in cells
int col = is_selected(ROW,COL) ? FL_YELLOW : FL_WHITE;
fl_push_clip(X,Y,W,H);
if ( strcmp(mode, "Addition") == 0 ) { sprintf(s, "%d", ROW+COL); } else
if ( strcmp(mode, "Subtract") == 0 ) { sprintf(s, "%d", ROW-COL); } else
if ( strcmp(mode, "Multiply") == 0 ) { sprintf(s, "%d", ROW*COL); } else
if ( strcmp(mode, "Divide" ) == 0 ) { if ( COL==0 ) sprintf(s, "N/A"); else sprintf(s, "%.2f", (float)ROW/(float)COL); } else
if ( strcmp(mode, "Exponent") == 0 ) { sprintf(s, "%g", powf((float)ROW,(float)COL)); } else
if ( strcmp(mode, "SinCos" ) == 0 ) { sprintf(s, "%.2f", sin((ROW/10.0)*PI) * cos((COL/10.0)*PI)); } else
{ sprintf(s, "???"); }
fl_color(col); fl_rectf(X,Y,W,H); // bg
fl_color(FL_GRAY0); fl_draw(s, X,Y,W,H, FL_ALIGN_CENTER); // text
fl_color(color()); fl_rect(X,Y,W,H); // box
fl_pop_clip();
return;
}
default:
return;
}
}
};
int main(int argc, char *argv[]) {
Fl_Double_Window *win = new Fl_Double_Window(700, 400, "Tree of tables");
win->begin();
{
// Create tree
Fl_Tree *tree = new Fl_Tree(10, 10, win->w()-20, win->h()-20);
tree->root()->label("Math Tables");
tree->item_labelfont(FL_COURIER); // font to use for items
tree->linespacing(4); // extra space between items
tree->item_draw_mode(tree->item_draw_mode() |
FL_TREE_ITEM_DRAW_LABEL_AND_WIDGET | // draw item with widget() next to it
FL_TREE_ITEM_HEIGHT_FROM_WIDGET); // make item height follow table's height
tree->selectmode(FL_TREE_SELECT_NONE); // font to use for items
tree->widgetmarginleft(12); // space between item and table
tree->connectorstyle(FL_TREE_CONNECTOR_DOTTED);
// Create tables, assign each a tree item
tree->begin();
{
MyTable *table;
Fl_Tree_Item *item;
table = new MyTable(0,0,500,156,"Addition");
item = tree->add("Arithmetic/Addition");
item->widget(table);
table = new MyTable(0,0,500,156,"Subtract");
item = tree->add("Arithmetic/Subtract");
item->widget(table);
table = new MyTable(0,0,500,156,"Multiply");
item = tree->add("Arithmetic/Multiply");
item->widget(table);
table = new MyTable(0,0,500,156,"Divide");
item = tree->add("Arithmetic/Divide ");
item->widget(table);
table = new MyTable(0,0,500,156,"Exponent");
item = tree->add("Misc/Exponent");
item->widget(table);
table = new MyTable(0,0,500,156,"SinCos");
item = tree->add("Misc/Sin*Cos ");
item->widget(table);
}
tree->end();
}
win->end();
win->resizable(win);
win->show(argc, argv);
return(Fl::run());
}
#else /*FLTK_ABI_VERSION*/
#include <FL/fl_ask.H>
int main(int argc, char *argv[]) {
fl_alert("This example must have FLTK_ABI_VERSION enabled to work properly.");
return 1;
}
#endif
//
// End of "$Id$".
//
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