mirror of https://github.com/fltk/fltk
49 lines
1.6 KiB
C++
49 lines
1.6 KiB
C++
//
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// Demonstrate how to draw an 'X' in fltk
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//
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// Create a custom widget that draws an 'X' to the corners of the window,
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// even when window is resized. Here we subclass Fl_Widget, the lowest level
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// FLTK widget object. Origin: http://seriss.com/people/erco/fltk/#FltkX
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//
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// Copyright 2005 by Greg Ercolano.
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// Copyright 1998-2017 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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// https://www.fltk.org/COPYING.php
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//
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// Please see the following page on how to report bugs and issues:
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//
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// https://www.fltk.org/bugs.php
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//
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#include <FL/Fl.H>
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#include <FL/fl_draw.H>
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#include <FL/Fl_Double_Window.H>
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class DrawX : public Fl_Widget {
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public:
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DrawX(int X, int Y, int W, int H, const char*L=0) : Fl_Widget(X,Y,W,H,L) {
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}
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virtual void draw() FL_OVERRIDE {
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// Draw background - a white filled rectangle
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fl_color(FL_WHITE); fl_rectf(x(),y(),w(),h());
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// Draw black 'X' over base widget's background
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fl_color(FL_BLACK);
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int x1 = x(), y1 = y();
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int x2 = x()+w()-1, y2 = y()+h()-1;
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fl_line(x1, y1, x2, y2);
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fl_line(x1, y2, x2, y1);
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}
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};
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int main() {
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Fl_Double_Window win(200,200,"Draw X");
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DrawX draw_x(10, 10, win.w()-20, win.h()-20); // put our widget 10 pixels within window edges
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draw_x.color(FL_WHITE); // make widget's background white
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win.resizable(draw_x);
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win.show();
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return(Fl::run());
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}
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