From c7044ca0097432fad31f7e525f7d17a63ab5bd29 Mon Sep 17 00:00:00 2001
From: Greg Ercolano <erco@seriss.com>
Date: Wed, 18 Apr 2012 15:20:20 +0000
Subject: Optimizations for when Fl_Tree is a container of FLTK widgets.    o
 Don't draw FLTK widgets outside tree's viewport.    o Added
 tree-as-container.cxx example program, demos tree      w/50k tree items each
 with 6 widgets (300k total)

git-svn-id: file:///fltk/svn/fltk/branches/branch-1.3@9356 ea41ed52-d2ee-0310-a9c1-e6b18d33e121
---
 examples/Makefile              |  1 +
 examples/tree-as-container.cxx | 90 ++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 91 insertions(+)
 create mode 100644 examples/tree-as-container.cxx

(limited to 'examples')

diff --git a/examples/Makefile b/examples/Makefile
index f2e32a758..ca1fd9b68 100644
--- a/examples/Makefile
+++ b/examples/Makefile
@@ -22,6 +22,7 @@ ALL = howto-add_fd-and-popen$(EXEEXT) \
       textdisplay-with-colors$(EXEEXT) \
       texteditor-simple$(EXEEXT) \
       tree-simple$(EXEEXT) \
+      tree-as-container$(EXEEXT) \
       wizard-simple$(EXEEXT)
 
 # default target -- build everything
diff --git a/examples/tree-as-container.cxx b/examples/tree-as-container.cxx
new file mode 100644
index 000000000..73a7fb580
--- /dev/null
+++ b/examples/tree-as-container.cxx
@@ -0,0 +1,90 @@
+//
+// "$Id$"
+//
+//	Fl_Tree as a container of FLTK widgets. - erco 04/15/2012
+//
+// 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 <FL/Fl.H>
+#include <FL/Fl_Double_Window.H>
+#include <FL/Fl_Tree.H>
+#include <FL/Fl_Group.H>
+#include <FL/Fl_Input.H>
+
+#define MAX_ROWS     80000
+#define MAX_FIELDS   5
+#define FIELD_WIDTH  70
+#define FIELD_HEIGHT 25
+
+class MyData : public Fl_Group {
+    Fl_Input *fields[MAX_FIELDS];
+public:
+    MyData(int X,int Y,int W,int H) : Fl_Group(X,Y,W,H) {
+	static int colors[MAX_FIELDS] = {
+	    0xffffdd00, 0xffdddd00, 0xddffff00, 0xddffdd00, 0xddddff00
+	};
+        for ( int t=0; t<MAX_FIELDS; t++ ) {
+	    fields[t] = new Fl_Input(X+t*FIELD_WIDTH,Y,FIELD_WIDTH,H);
+	    fields[t]->color(colors[t]);
+	}
+	end();
+    }
+    void SetData(int col, const char *val) {
+        if ( col >= 0 && col < MAX_FIELDS )
+	    fields[col]->value(val);
+    }
+};
+
+int main(int argc, char *argv[]) {
+  Fl_Double_Window *win = new Fl_Double_Window(450, 400, "Tree As FLTK Widget Container");
+  win->begin();
+  {
+    // Create the tree
+    Fl_Tree *tree = new Fl_Tree(10, 10, win->w()-20, win->h()-20);
+    tree->showroot(0);				// don't show root of tree
+    // Add some regular text nodes
+    tree->add("Foo/Bar/001");
+    tree->add("Foo/Bar/002");
+    tree->add("Foo/Bla/Aaa");
+    tree->add("Foo/Bla/Bbb");
+    // Add items to the 'Data' node
+    for ( int t=0; t<MAX_ROWS; t++ ) {
+        // Add item to tree
+        static char s[80];
+	sprintf(s, "FLTK Widgets/%d", t);
+	Fl_Tree_Item *item = tree->add(s);
+	// Reconfigure item to be an FLTK widget (MyData)
+	tree->begin();
+	{
+	    MyData *data = new MyData(0,0,FIELD_WIDTH*MAX_FIELDS, FIELD_HEIGHT);
+	    item->widget(data);
+	    // Initialize widget data
+	    for ( int c=0; c<MAX_FIELDS; c++ ) {
+		sprintf(s, "%d-%d", t,c);
+	        data->SetData(c,s);
+	    }
+	}
+	tree->end();
+    }
+  }
+  win->end();
+  win->resizable(win);
+  win->show(argc, argv);
+  return(Fl::run());
+}
+
+//
+// End of "$Id$".
+//
-- 
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