test/unittests.cxx

   1 //
   2 // "$Id: unittests.cxx 7903 2010-11-28 21:06:39Z matt $"
   3 //
   4 // Unit tests for the Fast Light Tool Kit (FLTK).
   5 //
   6 // Copyright 1998-2010 by Bill Spitzak and others.
   7 //
   8 // This library is free software; you can redistribute it and/or
   9 // modify it under the terms of the GNU Library General Public
  10 // License as published by the Free Software Foundation; either
  11 // version 2 of the License, or (at your option) any later version.
  12 //
  13 // This library is distributed in the hope that it will be useful,
  14 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16 // Library General Public License for more details.
  17 //
  18 // You should have received a copy of the GNU Library General Public
  19 // License along with this library; if not, write to the Free Software
  20 // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
  21 // USA.
  22 //
  23 // Please report all bugs and problems on the following page:
  24 //
  25 //     http://www.fltk.org/str.php
  26 //
  27 // Fltk unit tests
  28 // v0.1 - Greg combines Matthias + Ian's tests
  29 // v0.2 - Ian's 02/12/09 fixes applied
  30 // v0.3 - Fixes to circle desc, augmented extent tests, fixed indents, added show(argc,argv)
  31 // v1.0 - Submit for svn
  32 // v1.1 - Matthias seperated all tests into multiple source files for hopefully easier handling
  33
  34 #include <FL/Fl.H>
  35 #include <FL/Fl_Double_Window.H>
  36 #include <FL/Fl_Hold_Browser.H>
  37 #include <FL/Fl_Help_View.H>
  38 #include <FL/Fl_Group.H>
  39 #include <FL/Fl_Box.H>
  40 #include <FL/fl_draw.H>         // fl_text_extents()
  41
  42 // WINDOW/WIDGET SIZES
  43 #define MAINWIN_W       700                             // main window w()
  44 #define MAINWIN_H       400                             // main window h()
  45 #define BROWSER_X       10                              // browser x()
  46 #define BROWSER_Y       25                              // browser y()
  47 #define BROWSER_W       150                             // browser w()
  48 #define BROWSER_H       MAINWIN_H-35                    // browser h()
  49 #define TESTAREA_X      (BROWSER_W + 20)                // test area x()
  50 #define TESTAREA_Y      25                              // test area y()
  51 #define TESTAREA_W      (MAINWIN_W - BROWSER_W - 30)    // test area w()
  52 #define TESTAREA_H      BROWSER_H                       // test area h()
  53
  54 typedef void (*UnitTestCallback)(const char*,Fl_Group*);
  55
  56 class MainWindow *mainwin = 0;
  57 Fl_Hold_Browser *browser = 0;
  58
  59 // This class helps to automagically register a new test with the unittest app.
  60 // Please see the examples on how this is used.
  61 class UnitTest {
  62 public:
  63   UnitTest(const char *label, Fl_Widget* (*create)()) :
  64     fWidget(0L)
  65   {
  66     fLabel = strdup(label);
  67     fCreate = create;
  68     add(this);
  69   }
  70   ~UnitTest() {
  71     delete fWidget;
  72     free(fLabel);
  73   }
  74   const char *label() {
  75     return fLabel;
  76   }
  77   void create() {
  78     fWidget = fCreate();
  79     if (fWidget) fWidget->hide();
  80   }
  81   void show() {
  82     if (fWidget) fWidget->show();
  83   }
  84   void hide() {
  85     if (fWidget) fWidget->hide();
  86   }
  87   static int numTest() { return nTest; }
  88   static UnitTest *test(int i) { return fTest[i]; }
  89 private:
  90   char *fLabel;
  91   Fl_Widget *(*fCreate)();
  92   Fl_Widget *fWidget;
  93
  94   static void add(UnitTest *t) {
  95     fTest[nTest] = t;
  96     nTest++;
  97   }
  98   static int nTest;
  99   static UnitTest *fTest[200];
 100 };
 101
 102 int UnitTest::nTest = 0;
 103 UnitTest *UnitTest::fTest[];
 104
 105
 106 // The main window needs an additional drawing feature in order to support
 107 // the viewport alignment test.
 108 class MainWindow : public Fl_Double_Window {
 109 public:
 110   MainWindow(int w, int h, const char *l=0L) :
 111     Fl_Double_Window(w, h, l),
 112     fTestAlignment(0)
 113   { }
 114   // this code is used by the viewport alignment test
 115   void drawAlignmentIndicators() {
 116     const int sze = 16;
 117     // top left corner
 118     fl_color(FL_GREEN); fl_yxline(0, sze, 0, sze);
 119     fl_color(FL_RED);   fl_yxline(-1, sze, -1, sze);
 120     fl_color(FL_WHITE); fl_rectf(3, 3, sze-2, sze-2);
 121     fl_color(FL_BLACK); fl_rect(3, 3, sze-2, sze-2);
 122     // bottom left corner
 123     fl_color(FL_GREEN); fl_yxline(0, h()-sze-1, h()-1, sze);
 124     fl_color(FL_RED);   fl_yxline(-1, h()-sze-1, h(), sze);
 125     fl_color(FL_WHITE); fl_rectf(3, h()-sze-1, sze-2, sze-2);
 126     fl_color(FL_BLACK); fl_rect(3, h()-sze-1, sze-2, sze-2);
 127     // bottom right corner
 128     fl_color(FL_GREEN); fl_yxline(w()-1, h()-sze-1, h()-1, w()-sze-1);
 129     fl_color(FL_RED);   fl_yxline(w(), h()-sze-1, h(), w()-sze-1);
 130     fl_color(FL_WHITE); fl_rectf(w()-sze-1, h()-sze-1, sze-2, sze-2);
 131     fl_color(FL_BLACK); fl_rect(w()-sze-1, h()-sze-1, sze-2, sze-2);
 132     // top right corner
 133     fl_color(FL_GREEN); fl_yxline(w()-1, sze, 0, w()-sze-1);
 134     fl_color(FL_RED);   fl_yxline(w(), sze, -1, w()-sze-1);
 135     fl_color(FL_WHITE); fl_rectf(w()-sze-1, 3, sze-2, sze-2);
 136     fl_color(FL_BLACK); fl_rect(w()-sze-1, 3, sze-2, sze-2);
 137   }
 138   void draw() {
 139     Fl_Double_Window::draw();
 140     if (fTestAlignment) {
 141       drawAlignmentIndicators();
 142     }
 143   }
 144   void testAlignment(int v) {
 145     fTestAlignment = v;
 146     redraw();
 147   }
 148   int fTestAlignment;
 149 };
 150
 151 //------- include the various unit tests as inline code -------
 152
 153 #include "unittest_about.cxx"
 154 #include "unittest_points.cxx"
 155 #include "unittest_lines.cxx"
 156 #include "unittest_rects.cxx"
 157 #include "unittest_circles.cxx"
 158 #include "unittest_text.cxx"
 159 #include "unittest_images.cxx"
 160 #include "unittest_viewport.cxx"
 161 #include "unittest_scrollbarsize.cxx"
 162
 163
 164 // callback whenever the browser value changes
 165 void Browser_CB(Fl_Widget*, void*) {
 166   for ( int t=1; t<=browser->size(); t++ ) {
 167     UnitTest *ti = (UnitTest*)browser->data(t);
 168     if ( browser->selected(t) ) {
 169       ti->show();
 170     } else {
 171       ti->hide();
 172     }
 173   }
 174 }
 175
 176
 177 // this is the main call. It creates the window and adds all previously
 178 // registered tests to the browser widget.
 179 int main(int argc, char **argv) {
 180   Fl::args(argc,argv);
 181   Fl::visual(FL_RGB);
 182   mainwin = new MainWindow(MAINWIN_W, MAINWIN_H, "Fltk Unit Tests");
 183   browser = new Fl_Hold_Browser(BROWSER_X, BROWSER_Y, BROWSER_W, BROWSER_H, "Unit Tests");
 184   browser->align(FL_ALIGN_TOP|FL_ALIGN_LEFT);
 185   browser->when(FL_WHEN_CHANGED);
 186   browser->callback(Browser_CB);
 187
 188   int i, n = UnitTest::numTest();
 189   for (i=0; i<n; i++) {
 190     UnitTest *t = UnitTest::test(i);
 191     mainwin->begin();
 192     t->create();
 193     mainwin->end();
 194     browser->add(t->label(), (void*)t);
 195   }
 196
 197   /////
 198   mainwin->resizable(mainwin);
 199   mainwin->show(argc,argv);
 200   // Select first test in browser, and show that test.
 201   browser->select(1);
 202   Browser_CB(browser,0);
 203   return(Fl::run());
 204 }
 205
 206 //
 207 // End of "$Id: unittests.cxx 7903 2010-11-28 21:06:39Z matt $".
 208 //