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FLTK - Fast Light Tool Kit - https://github.com/fltk/fltk - cross platform GUI development
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106 lines
2.6 KiB
106 lines
2.6 KiB
// |
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// "$Id$" |
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// |
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// Curve test program for the Fast Light Tool Kit (FLTK). |
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// |
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// Copyright 1998-2015 by Bill Spitzak and others. |
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// |
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// This library is free software. Distribution and use rights are outlined in |
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// the file "COPYING" which should have been included with this file. If this |
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// file is missing or damaged, see the license at: |
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// |
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// http://www.fltk.org/COPYING.php |
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// |
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// Please report all bugs and problems on the following page: |
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// |
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// http://www.fltk.org/str.php |
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// |
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#include <FL/Fl.H> |
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#include <FL/Fl_Double_Window.H> |
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#include <FL/Fl_Hor_Value_Slider.H> |
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#include <FL/fl_draw.H> |
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#include <FL/Fl_Toggle_Button.H> |
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double args[9] = { |
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20,20, 50,200, 100,20, 200,200, 0}; |
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const char* name[9] = { |
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"X0", "Y0", "X1", "Y1", "X2", "Y2", "X3", "Y3", "rotate"}; |
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int points; |
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class Drawing : public Fl_Widget { |
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void draw() { |
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fl_push_clip(x(),y(),w(),h()); |
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fl_color(FL_DARK3); |
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fl_rectf(x(),y(),w(),h()); |
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fl_push_matrix(); |
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if (args[8]) { |
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fl_translate(x()+w()/2.0, y()+h()/2.0); |
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fl_rotate(args[8]); |
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fl_translate(-(x()+w()/2.0), -(y()+h()/2.0)); |
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} |
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fl_translate(x(),y()); |
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if (!points) { |
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fl_color(FL_WHITE); |
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fl_begin_complex_polygon(); |
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fl_curve(args[0],args[1],args[2],args[3],args[4],args[5],args[6],args[7]); |
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fl_end_complex_polygon(); |
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} |
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fl_color(FL_BLACK); |
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fl_begin_line(); |
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fl_vertex(args[0],args[1]); |
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fl_vertex(args[2],args[3]); |
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fl_vertex(args[4],args[5]); |
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fl_vertex(args[6],args[7]); |
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fl_end_line(); |
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fl_color(points ? FL_WHITE : FL_RED); |
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points ? fl_begin_points() : fl_begin_line(); |
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fl_curve(args[0],args[1],args[2],args[3],args[4],args[5],args[6],args[7]); |
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points ? fl_end_points() : fl_end_line(); |
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fl_pop_matrix(); |
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fl_pop_clip(); |
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} |
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public: |
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Drawing(int X,int Y,int W,int H) : Fl_Widget(X,Y,W,H) {} |
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}; |
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Drawing *d; |
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void points_cb(Fl_Widget* o, void*) { |
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points = ((Fl_Toggle_Button*)o)->value(); |
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d->redraw(); |
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} |
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void slider_cb(Fl_Widget* o, void* v) { |
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Fl_Slider* s = (Fl_Slider*)o; |
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args[fl_intptr_t(v)] = s->value(); |
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d->redraw(); |
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} |
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int main(int argc, char** argv) { |
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Fl_Double_Window window(300,555); |
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Drawing drawing(10,10,280,280); |
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d = &drawing; |
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int y = 300; |
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for (int n = 0; n<9; n++) { |
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Fl_Slider* s = new Fl_Hor_Value_Slider(50,y,240,25,name[n]); y += 25; |
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s->minimum(0); s->maximum(280); |
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if (n == 8) s->maximum(360); |
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s->step(1); |
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s->value(args[n]); |
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s->align(FL_ALIGN_LEFT); |
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s->callback(slider_cb, (void*)(fl_intptr_t)n); |
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} |
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Fl_Toggle_Button but(50,y,50,25,"points"); |
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but.callback(points_cb); |
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window.end(); |
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window.show(argc,argv); |
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return Fl::run(); |
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} |
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// |
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// End of "$Id$". |
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//
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