ref: 9eaba52cafcac7c2f3bfc72d7be1f15893196be1
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 "$Id$". //