ref: 3d94702bea267035144836a5929129fd848b4d79
dir: /DoConfig/fltk/test/unittest_lines.cxx/
//
// "$Id$"
//
// Unit tests for the Fast Light Tool Kit (FLTK).
//
// 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 <FL/Fl_Box.H>
#include <FL/fl_draw.H>
//
//------- test the line drawing capabilities of this implementation ----------
//
class LineTest : public Fl_Box {
public:
static Fl_Widget *create() {
return new LineTest(TESTAREA_X, TESTAREA_Y, TESTAREA_W, TESTAREA_H);
}
LineTest(int x, int y, int w, int h) : Fl_Box(x, y, w, h) {
label("testing the integer based fl_line calls\n"
"No red pixels should be visible.\n"
"If you see bright red pixels, the line drawing alignment is off,\n"
"or the last pixel in a line does not get drawn.\n"
"If you see dark red pixels, anti-aliasing must be switched off.");
align(FL_ALIGN_INSIDE|FL_ALIGN_BOTTOM|FL_ALIGN_LEFT|FL_ALIGN_WRAP);
box(FL_BORDER_BOX);
}
void draw() {
Fl_Box::draw();
int a = x()+10, b = y()+10; fl_color(FL_BLACK); fl_rect(a, b, 100, 100);
// testing fl_xyline(x, y, x1)
fl_color(FL_RED); fl_point(a+10, b+10); fl_point(a+20, b+10);
fl_color(FL_BLACK); fl_xyline(a+10, b+10, a+20);
// testing fl_xyline(x, y, x1, y2);
fl_color(FL_RED); fl_point(a+10, b+20); fl_point(a+20, b+20);
fl_point(a+20, b+30);
fl_color(FL_BLACK); fl_xyline(a+10, b+20, a+20, b+30);
// testing fl_xyline(x, y, x1, y2, x3);
fl_color(FL_RED); fl_point(a+10, b+40); fl_point(a+20, b+40);
fl_point(a+20, b+50); fl_point(a+30, b+50);
fl_color(FL_BLACK); fl_xyline(a+10, b+40, a+20, b+50, a+30);
//+++ add testing for the fl_yxline commands!
// testing fl_loop(x,y, x,y, x,y, x, y)
fl_color(FL_RED); fl_point(a+60, b+60); fl_point(a+90, b+60);
fl_point(a+60, b+90); fl_point(a+90, b+90);
fl_color(FL_BLACK);
fl_loop(a+60, b+60, a+90, b+60, a+90, b+90, a+60, b+90);
}
};
UnitTest lines("drawing lines", LineTest::create);
//
// End of "$Id$"
//