mirror of https://github.com/fltk/fltk
84 lines
2.8 KiB
C++
84 lines
2.8 KiB
C++
//
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// "$Id$"
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//
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// Unit tests for the Fast Light Tool Kit (FLTK).
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//
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// Copyright 1998-2010 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_Box.H>
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#include <FL/fl_draw.H>
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//
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//------- test the line drawing capabilities of this implementation ----------
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//
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class LineTest : public Fl_Box {
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public:
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static Fl_Widget *create() {
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return new LineTest(TESTAREA_X, TESTAREA_Y, TESTAREA_W, TESTAREA_H);
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}
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LineTest(int x, int y, int w, int h) : Fl_Box(x, y, w, h) {
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label("testing the integer based fl_line calls\n"
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"No red pixels should be visible.\n"
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"If you see bright red pixels, the line drawing alignment is off,\n"
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"or the last pixel in a line does not get drawn.\n"
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"If you see dark red pixels, anti-aliasing must be switched off.");
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align(FL_ALIGN_INSIDE|FL_ALIGN_BOTTOM|FL_ALIGN_LEFT|FL_ALIGN_WRAP);
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box(FL_BORDER_BOX);
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}
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void draw() {
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Fl_Box::draw();
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int i, a = x()+10, b = y()+10; fl_color(FL_BLACK); fl_rect(a, b, 100, 100);
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// testing fl_xyline(x, y, x1)
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fl_color(FL_RED); fl_point(a+10, b+10); fl_point(a+20, b+10);
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fl_color(FL_BLACK); fl_xyline(a+10, b+10, a+20);
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// testing fl_xyline(x, y, x1, y2);
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fl_color(FL_RED); fl_point(a+10, b+20); fl_point(a+20, b+20);
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fl_point(a+20, b+30);
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fl_color(FL_BLACK); fl_xyline(a+10, b+20, a+20, b+30);
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// testing fl_xyline(x, y, x1, y2, x3);
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fl_color(FL_RED); fl_point(a+10, b+40); fl_point(a+20, b+40);
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fl_point(a+20, b+50); fl_point(a+30, b+50);
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fl_color(FL_BLACK); fl_xyline(a+10, b+40, a+20, b+50, a+30);
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//+++ add testing for the fl_yxline commands!
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// testing fl_loop(x,y, x,y, x,y, x, y)
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fl_color(FL_RED); fl_point(a+60, b+60); fl_point(a+90, b+60);
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fl_point(a+60, b+90); fl_point(a+90, b+90);
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fl_color(FL_BLACK);
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fl_loop(a+60, b+60, a+90, b+60, a+90, b+90, a+60, b+90);
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a = x()+120, b = y()+10; fl_color(FL_BLACK); fl_rect(a, b, 203, 203);
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a += 101; b += 101;
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fl_color(0xff888800);
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for (i=-80; i<=80; i+=20) fl_line(a, b, a+i, b-100);
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fl_color(0xff444400);
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for (i=-80; i<=80; i+=20) fl_line(a, b, a+i, b+100);
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fl_color(0x88ff8800);
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for (i=-80; i<=80; i+=20) fl_line(a, b, a-100, b+i);
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fl_color(0x44ff4400);
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for (i=-80; i<=80; i+=20) fl_line(a, b, a+100, b+i);
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fl_color(0x8888ff00);
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fl_line(a, b, a-100, b-100);
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fl_line(a, b, a+100, b-100);
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fl_line(a, b, a+100, b+100);
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fl_line(a, b, a-100, b+100);
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}
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};
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UnitTest lines("drawing lines", LineTest::create);
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//
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// End of "$Id$"
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//
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