Author: greg.ercolano
Date: 2012-04-26 19:11:37 -0700 (Thu, 26 Apr 2012)
New Revision: 9405
Log:
Added a new example to demonstrate complex widgets as children
of a tree with custom resizing behavior, selectable contents, etc.
Also demonstrates the need for the new FL_TREE_ITEM_HEIGHT_FROM_WIDGET feature.
Added:
branches/branch-1.3/examples/tree-of-tables.cxx
Modified:
branches/branch-1.3/examples/Makefile
Modified: branches/branch-1.3/examples/Makefile
===================================================================
--- branches/branch-1.3/examples/Makefile 2012-04-27 02:03:48 UTC (rev
9404)
+++ branches/branch-1.3/examples/Makefile 2012-04-27 02:11:37 UTC (rev
9405)
@@ -23,6 +23,7 @@
texteditor-simple$(EXEEXT) \
tree-simple$(EXEEXT) \
tree-as-container$(EXEEXT) \
+ tree-of-tables$(EXEEXT) \
wizard-simple$(EXEEXT)
# default target -- build everything
Added: branches/branch-1.3/examples/tree-of-tables.cxx
===================================================================
--- branches/branch-1.3/examples/tree-of-tables.cxx
(rev 0)
+++ branches/branch-1.3/examples/tree-of-tables.cxx 2012-04-27 02:11:37 UTC
(rev 9405)
@@ -0,0 +1,155 @@
+//
+// "$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 >= 10302
+class MyTable : public Fl_Table {
+ char *mode;
+public:
+ MyTable(int X,int Y,int W,int H,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$".
+//
Property changes on: branches/branch-1.3/examples/tree-of-tables.cxx
___________________________________________________________________
Name: svn:keywords
+ author date id revision
Name: svn:eol-style
+ native
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