diff options
| -rw-r--r-- | examples/CMakeLists.txt | 1 | ||||
| -rw-r--r-- | examples/Makefile | 1 | ||||
| -rw-r--r-- | examples/chart-simple.cxx | 64 |
3 files changed, 66 insertions, 0 deletions
diff --git a/examples/CMakeLists.txt b/examples/CMakeLists.txt index e04722006..a81a5695b 100644 --- a/examples/CMakeLists.txt +++ b/examples/CMakeLists.txt @@ -30,6 +30,7 @@ file (MAKE_DIRECTORY ${EXECUTABLE_OUTPUT_PATH}) ############################################################ set (SIMPLE_SOURCES + chart-simple browser-simple draggable-group howto-add_fd-and-popen diff --git a/examples/Makefile b/examples/Makefile index 50e777495..a4ffc12f5 100644 --- a/examples/Makefile +++ b/examples/Makefile @@ -6,6 +6,7 @@ SHELL = /bin/sh # Executables ALL = browser-simple$(EXEEXT) \ + chart-simple$(EXEEXT) \ clipboard$(EXEEXT) \ draggable-group$(EXEEXT) \ howto-add_fd-and-popen$(EXEEXT) \ diff --git a/examples/chart-simple.cxx b/examples/chart-simple.cxx new file mode 100644 index 000000000..3f05b3631 --- /dev/null +++ b/examples/chart-simple.cxx @@ -0,0 +1,64 @@ +// +// Demonstrate how to use Fl_Chart in fltk +// +// Demonstrates rudimentary features of Fl_Chart. +// Origin: http://seriss.com/people/erco/fltk/#Fl_Chart +// +// Copyright 2008 by Greg Ercolano. +// Copyright 1998-2020 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: +// +// https://www.fltk.org/COPYING.php +// +// Please see the following page on how to report bugs and issues: +// +// https://www.fltk.org/bugs.php +// +#include <FL/Fl.H> +#include <FL/Fl_Window.H> +#include <FL/Fl_Chart.H> +#include <FL/Fl_Choice.H> +#include <math.h> + +// Globals +Fl_Window *G_win = 0; +Fl_Chart *G_chart = 0; +Fl_Choice *G_choice = 0; + +// Fl_Choice callback for changing chart type() +static void chart_type_cb(Fl_Widget *w, void*) { + const Fl_Menu_Item *item = G_choice->mvalue(); // item picked + G_chart->type( item->argument() ); // apply change + G_chart->redraw(); + // printf("Choice: '%s', argument=%ld\n", G_choice->text(), item->argument()); +} + +// main +int main() { + G_win = new Fl_Window(1000, 510, "Chart Simple"); + // Fl_Chart with a sin() wave of data + G_chart = new Fl_Chart(20, 20, G_win->w()-40, G_win->h()-80, "Chart"); + G_chart->bounds(-125.0, 125.0); + for ( double t=0; t<15; t+=0.5 ) { + double val = sin(t) * 125.0; + static char val_str[20]; + sprintf(val_str, "%.0lf", val); + G_chart->add(val, val_str, (val<0)?FL_RED:FL_GREEN); + } + // Let user change chart type + G_choice = new Fl_Choice(140,470,200,25,"Chart Type: "); + G_choice->add("FL_BAR_CHART", 0, chart_type_cb, (void*)FL_BAR_CHART ); + G_choice->add("FL_HORBAR_CHART", 0, chart_type_cb, (void*)FL_HORBAR_CHART); + G_choice->add("FL_LINE_CHART", 0, chart_type_cb, (void*)FL_LINE_CHART); + G_choice->add("FL_FILL_CHART", 0, chart_type_cb, (void*)FL_FILL_CHART); + G_choice->add("FL_SPIKE_CHART", 0, chart_type_cb, (void*)FL_SPIKE_CHART); + G_choice->add("FL_PIE_CHART", 0, chart_type_cb, (void*)FL_PIE_CHART); + G_choice->add("FL_SPECIALPIE_CHART", 0, chart_type_cb, (void*)FL_SPECIALPIE_CHART); + G_choice->value(0); + G_win->resizable(G_win); + G_win->show(); + return(Fl::run()); +} |