Added Sudoku and Blocks to the "examples" documentation page.

I would like to mention at this point that Level 9 of Blocks is very very fast and that I am close to getting blisters on my click-finger... .

git-svn-id: file:///fltk/svn/fltk/branches/branch-1.1@5375 ea41ed52-d2ee-0310-a9c1-e6b18d33e121

1 files changed, 85 insertions, 11 deletions

diff --git a/documentation/examples.html b/documentation/examples.html
index f3f3e55d0..e907fe14a 100644
--- a/documentation/examples.html
+++ b/documentation/examples.html
@@ -22,82 +22,84 @@ a test platform to verify the functionality of the FLTK library.</P>
 <td><a href="#arc"><tt>arc</tt></a></td>
 <td><a href="#ask"><tt>ask</tt></a></td>
 <td><a href="#bitmap"><tt>bitmap</tt></a></td>
+<td><a href="#blocks"><tt>blocks</tt></a></td>
 <td><a href="#boxtype"><tt>boxtype</tt></a></td>
-<td><a href="#browser"><tt>browser</tt></a></td>
 </tr>
 <tr>
+<td><a href="#browser"><tt>browser</tt></a></td>
 <td><a href="#button"><tt>button</tt></a></td>
 <td><a href="#buttons"><tt>buttons</tt></a></td>
 <td><a href="#checkers"><tt>checkers</tt></a></td>
 <td><a href="#clock"><tt>clock</tt></a></td>
 <td><a href="#colbrowser"><tt>colbrowser</tt></a></td>
-<td><a href="#color_chooser"><tt>color_chooser</tt></a></td>
 </tr>
 <tr>
+<td><a href="#color_chooser"><tt>color_chooser</tt></a></td>
 <td><a href="#cube"><tt>cube</tt></a></td>
 <td><a href="#CubeView"><tt>CubeView</tt></a></td>
 <td><a href="#cursor"><tt>cursor</tt></a></td>
 <td><a href="#curve"><tt>curve</tt></a></td>
 <td><a href="#demo"><tt>demo</tt></a></td>
-<td><a href="#doublebuffer"><tt>doublebuffer</tt></a></td>
 </tr>
 <tr>
+<td><a href="#doublebuffer"><tt>doublebuffer</tt></a></td>
 <td><a href="#editor"><tt>editor</tt></a></td>
 <td><a href="#fast_slow"><tt>fast_slow</tt></a></td>
 <td><a href="#file_chooser"><tt>file_chooser</tt></a></td>
 <td><a href="#fluid"><tt>fluid</tt></a></td>
 <td><a href="#fonts"><tt>fonts</tt></a></td>
-<td><a href="#forms"><tt>forms</tt></a></td>
 </tr>
 <tr>
+<td><a href="#forms"><tt>forms</tt></a></td>
 <td><a href="#fractals"><tt>fractals</tt></a></td>
 <td><a href="#fullscreen"><tt>fullscreen</tt></a></td>
 <td><a href="#gl_overlay"><tt>gl_overlay</tt></a></td>
 <td><a href="#glpuzzle"><tt>glpuzzle</tt></a></td>
 <td><a href="#hello"><tt>hello</tt></a></td>
-<td><a href="#help"><tt>help</tt></a></td>
 </tr>
 <tr>
+<td><a href="#help"><tt>help</tt></a></td>
 <td><a href="#iconize"><tt>iconize</tt></a></td>
 <td><a href="#image"><tt>image</tt></a></td>
 <td><a href="#inactive"><tt>inactive</tt></a></td>
 <td><a href="#input"><tt>input</tt></a></td>
 <td><a href="#input_choice"><tt>input_choice</tt></a></td>
-<td><a href="#keyboard"><tt>keyboard</tt></a></td>
 </tr>
 <tr>
+<td><a href="#keyboard"><tt>keyboard</tt></a></td>
 <td><a href="#label"><tt>label</tt></a></td>
 <td><a href="#line_style"><tt>line_style</tt></a></td>
 <td><a href="#list_visuals"><tt>list_visuals</tt></a></td>
 <td><a href="#mandelbrot"><tt>mandelbrot</tt></a></td>
 <td><a href="#menubar"><tt>menubar</tt></a></td>
-<td><a href="#message"><tt>message</tt></a></td>
 </tr>
 <tr>
+<td><a href="#message"><tt>message</tt></a></td>
 <td><a href="#minimum"><tt>minimum</tt></a></td>
 <td><a href="#navigation"><tt>navigation</tt></a></td>
 <td><a href="#output"><tt>output</tt></a></td>
 <td><a href="#overlay"><tt>overlay</tt></a></td>
 <td><a href="#pack"><tt>pack</tt></a></td>
-<td><a href="#pixmap_browser"><tt>pixmap_browser</tt></a></td>
 </tr>
 <tr>
+<td><a href="#pixmap_browser"><tt>pixmap_browser</tt></a></td>
 <td><a href="#pixmap"><tt>pixmap</tt></a></td>
 <td><a href="#preferences"><tt>preferences</tt></a></td>
 <td><a href="#radio"><tt>radio</tt></a></td>
 <td><a href="#resizebox"><tt>resizebox</tt></a></td>
 <td><a href="#resize"><tt>resize</tt></a></td>
-<td><a href="#scroll"><tt>scroll</tt></a></td>
 </tr>
 <tr>
+<td><a href="#scroll"><tt>scroll</tt></a></td>
 <td><a href="#shape"><tt>shape</tt></a></td>
 <td><a href="#subwindow"><tt>subwindow</tt></a></td>
+<td><a href="#sudoku"><tt>sudoku</tt></a></td>
 <td><a href="#symbols"><tt>symbols</tt></a></td>
 <td><a href="#tabs"><tt>tabs</tt></a></td>
-<td><a href="#threads"><tt>threads</tt></a></td>
-<td><a href="#tile"><tt>tile</tt></a></td>
 </tr>
 <tr>
+<td><a href="#threads"><tt>threads</tt></a></td>
+<td><a href="#tile"><tt>tile</tt></a></td>
 <td><a href="#tiled_image"><tt>tiled_image</tt></a></td>
 <td><a href="#valuators"><tt>valuators</tt></a></td>
 </tr>
@@ -106,64 +108,87 @@ a test platform to verify the functionality of the FLTK library.</P>
 <h3><a name="adjuster">adjuster</h3>
 <tt>adjuster</tt> shows a nifty little widget for quickly
 setting values in a great range.
+
 <h3><a name="arc">arc</h3>
 The <tt>arc</tt> demo explains how to derive your own widget to
 generate some custom drawings. The sample drawings use the matrix
 based arc drawing for some fun effects.
+
 <h3><a name="ask">ask</h3>
 <tt>ask</tt> shows some of FLTK's standard dialog boxes, but you 
 may end up in a loop, but you may end up in a loop, but... .
+
 <h3><a name="bitmap">bitmap</h3>
 This simple test shows the use of a single color bitmap as a
 label for a box widget. Bitmaps are stored in the X11 '.bmp' 
 file format and can be part of the source code.
+
+<h3><a name="blocks">blocks</h3>
+A wonderful and addictive game that shows the usage of FLTK
+timers, graphics, and how to implement sound on all platforms.
+<tt>blocks</tt> is also a good example for the Mac OS X specific
+bundle format.
+ 
 <h3><a name="boxtype">boxtype</h3>
 <tt>boxtype</tt> gives an overview of readily available boxes and
 frames in FLTK. More types can be added by the user. When using 
 themes, FLTK shuffles boxtypes around to give an app a new look.
+
 <h3><a name="browser">browser</h3>
 <tt>browser</tt> shows the capabilities of the <tt>Fl_Browser</tt> widget. 
 Important features tested are loading of files, line formatting, and
 correct positioning of the browser data window.
+
 <h3><a name="button">button</h3>
 The <tt>button</tt> test is a very simple demo of buttons and callbacks.
+
 <h3><a name="buttons">buttons</h3>
 <tt>buttons</tt> shows a sample of FLTK button types.
+
 <h3><a name="checkers">checkers</h3>
 Written by Steve Poulsen in early 1979, <tt>checkers</tt> shows
 how to polish a VT100 text terminal based program into a neat
 program with a graphical UI. Check out the code that drags the
 pieces, and how the pieces are drawn by layering. Then tell me 
 how to beat this program.
+
 <h3><a name="clock">clock</h3>
 The <tt>clock</tt> demo shows two analog clocks. The innards of
 teh <tt>Fl_Clock</tt> widget are pretty interesting as they explain
 the use of timeouts and matrix based drawing.
+
 <h3><a name="colbrowser">colbrowser</h3>
 <tt>colbrowser</tt> runs only on X11 systems. It reads 
 <i>/usr/lib/X11/rgb.txt</i> to show the color representation
 of every text entry in the file. This is beautiful, but
 only mederatly useful unless your UI is written in <i>Motif</i>.
+
 <h3><a name="color_chooser">color_chooser</h3>
 The <tt>color_chooser</tt> gives a short demo of FLTK's palette based
 color chooser and of the RGB based color wheel.
+
 <h3><a name="cube">cube</h3>
 The <tt>cube</tt> demo shows the speed of OpenGL. It also tests
 the ability to render two OpenGL buffers into a single window, 
 and shows OpenGL text.
+
 <h3><a name="CubeView">CubeView</h3>
 <tt>CubeView</tt> shows how to create a UI containing OpenGL with fluid.
+
 <h3><a name="cursor">cursor</h3>
 The <tt>cursor</tt> demo show all mouse cursor shapes that come standard
 with FLTK. The <i>fgcolor</i> and <i>bgcolor</i> sliders work only
 on few systems like Irix.
+
 <h3><a name="curve">curve</h3>
 <tt>curve</tt> draws a nice Bezier curve into a custom widget. The 
 <i>points</i> option for splines is not supported on all platforms.
+
 <h3><a name="demo">demo</h3>
 This tool allows quick access to all programs in the <tt>test</tt> directory. 
 <tt>demo</tt> is viaully based on the IrixGL demo program and cna be 
 extended by editing <tt>test/demo.menu</tt>.
+
 <h3><a name="doublebuffer">doublebuffer</h3>
 The <tt>doublebuffer</tt> demo show the difference between a single
 buffered window, which may flicker during a slow redraw, and a 
@@ -171,178 +196,223 @@ double buffered window, which never flickers, but uses twice the
 amount of RAM. Some modern OS's double buffer all windows automatically
 to allow transparency and shadows on the desktop. FLTK is smart enough
 to not tripple buffer a window in that case.
+
 <h3><a name="editor">editor</h3>
 FLTK has two very different text input widgets. <tt>Fl_Input</tt> 
 and derived classes are rather leight weight, however 
 <tt>Fl_Text_Editor</tt> is a complete port of nedit (with permission). 
 The <tt>editor</tt> test is almost a full application, showing custom
 syntax highlighting and dialog creation. 
+
 <h3><a name="fast_slow">fast_slow</h3>
 <tt>fast_slow</tt> shows how an application can use then <tt>when()</tt>
 setting to receive different kinds of callbacks.
+
 <h3><a name="file_chooser">file_chooser</h3>
 The standard FLTK <tt>file_chooser</tt> is the result of many
 iterations, trying to find a middle ground between a complex 
 browser and a fast light implementation.
+
 <h3><a name="fonts">fonts</h3>
 <tt>fonts</tt> show all available text fonts on the host system.
 If your machine still has some pixmap based fonts, the supported
 sizes will be shown in bold face. Only the first 256 fonts will 
 be listed.
+
 <h3><a name="forms">forms</h3>
 <tt>forms</tt> is an XForms program with very few changes.
 Search for "fltk" to find all changes necessary to port to fltk.
 This demo show the different boxtypes. Note that some
 boxtypes are not appropriate for some objects.
+
 <h3><a name="fractals">fractals</h3>
 <tt>fractals</tt> shows how to mix OpenGL, Glut and FLTK code.
 FLTK supports a rather large subset of Glut, so that many Glut
 application compile just fine.
+
 <h3><a name="fullscreen">fullscreen</h3>
 This demo shows how to do many of the window manipulations that
 are popular on SGI programs, even though X does not really like
 them.  You can toggle the border on/off, change the visual to
 switch between single/double buffer, and make the window take
 over the screen. More information in the source code.
+
 <h3><a name="gl_overlay">gl_overlay</h3>
 <tt>gl_overlay</tt> shows OpenGL overlay plane rendering. If no
 hardware overly plane is available, FLTK will simulate it
 automatically.
+
 <h3><a name="glpuzzle">glpuzzle</h3>
 The <tt>glpuzzle</tt> test dhows how most Glut source code compiles
 easily under FLTK.
+
 <h3><a name="hello">hello</h3>
 <tt>hello</tt>: Hello, World. Need I say maore? Well, maybe. This 
 tiny demo shows how little is needed to get a functioning application
 running with FLTK. Quite impressive, I'd say.
+
 <h3><a name="help">help</h3>
 <tt>help</tt> displays the built-in FLTK help browser. The 
 <tt>Fl_Help_Dialog</tt> understands a subset of html and renders
 various image formats. It is a great help to provide help
 pages to the user without depending on the operating system's 
 html browser.
+
 <h3><a name="iconize">iconize</h3>
 <tt>iconize</tt> demonstrates the efeect of the window functions
 <tt>hide()</tt>, <tt>iconize()</tt>, and <tt>show()</tt>.
+
 <h3><a name="image">image</h3>
 The <tt>image</tt> demo shows how an image can be created on the fly.
 This generated image contains an alpha (transparency) channel which
 lets previous renderings 'shine through', either via true 
 transparency or by using screen door transparency (pixelation).
+
 <h3><a name="inactive">inactive</h3>
 <tt>inactive</tt> tests the correct rendering of inactive widgets.
 To see the inactive version of images, you can check the pixmap 
 or image test.
+
 <h3><a name="input">input</h3>
 This tool shows and tests differnet types of text input fields based on
 <tt>Fl_Input_</tt>. The <tt>input</tt> program also tests various 
 settings of <tt>Fl_Input::when()</tt>.
+
 <h3><a name="input_choice">input_choice</h3>
 <tt>input_choice</tt> tests the latest addition to FLTK1, a text input 
 field with an attached pulldown menu. Windows users will recognize 
 similarities to the 'ComboBox'. <tt>input_choice</tt> starts up in 
 'plastic' scheme, but the traditional scheme is also supported.
+
 <h3><a name="keyboard">keyboard</h3>
 FLTK unifies keyboard events for all platforms. The <tt>keyboard</tt>
 test can be used to check the return values of <tt>Fl::event_key()</tt>
 and <tt>Fl::event_text()</tt>. It is also great to see the modifier 
 buttons and the scroll wheel at work. Quit this application by closing
 the window. The ESC key will not work. 
+
 <h3><a name="label">label</h3>
 Every FLTK widget can have a label attached to it. The <tt>label</tt> 
 demo shows alignment, clipping and wrapping of text labels. Labels
 can contain symbols at the start and end of the text, like <i>@FLTK</i>
 or <i>@circle uh-huh @square</i>.
+
 <h3><a name="line_style">line_style</h3>
 Advanced line drawing can be tested with <tt>line_style</tt>. 
 Not all platforms support all line styles.
+
 <h3><a name="list_visuals">list_visuals</h3>
 This little app finds all available pixel formats for the current X11
 screen. But since you are now an FLTK user, you don't have to worry 
 about any of this.
+
 <h3><a name="mandelbrot">mandelbrot</h3>
 <tt>mandelbrot</tt> shows two advanced topics in one test. It creates
 grayscale images on the fly, updating them via the <i>idle</i> callback
 system. This is one of the few occasions where the <i>idle</i> callback
 is very useful by giving all available processor time to the application
 without blocking the UI or other apps.
+
 <h3><a name="menubar">menubar</h3>
 The <tt>menubar</tt> tests many aspects of FLTK's popup menu system.
 Among the features are radio buttons, menus taller than the screen,
 arbitrary sub menu depth, and global shortcuts.
+
 <h3><a name="message">message</h3>
 <tt>message</tt> pops up a few of FLTK's standars message boxes.
+
 <h3><a name="minimum">minimum</h3>
 The <tt>minimum</tt> test program verifies that the update regions
 are set correctly. In a real life application, the trail would
 be avoided by choosing a smaller label or by setting label clipping.
 correctly. 
+
 <h3><a name="navigation">navigation</h3>
 <tt>navigation</tt> demonstrates how the text cursor moves from
 text field to text field by using the arrow keys, tab and shift-tab..
+
 <h3><a name="output">output</h3>
 <tt>output</tt> shows the difference between the single line and
 multi line mode of the <tt>Fl_Output</tt> widget. Fonts can be
 selected from the FLTK standard list of fonts.
+
 <h3><a name="overlay">overlay</h3>
 The <tt>overlay</tt> test app show how easy an FLTK window can
 be layered to display cursor and manipulator style elemnts. This
 example derives a new class from <tt>Fl_Overly_WIndow</tt> and 
 provides a new function to draw custom overlays.
+
 <h3><a name="pack">pack</h3>
 The <tt>pack</tt> test program demonstrates the resizing
 and repositioning of children of the <tt>Fl_Pack</tt> group.
 Putting an <tt>Fl_Pack</tt> into an <tt>Fl_Scroll</tt> is 
 a useful way to create a kind of browser.
+
 <h3><a name="pixmap_browser">pixmap_browser</h3>
 <tt>pixmap_browser</tt> tests the shared image interface. When using
 the same image multiple times <tt>Fl_Shared_Image</tt> will keep it
 only once in memory.
+
 <h3><a name="pixmap">pixmap</h3>
 This simple test shows the use of a LUT based pixmap as a
 label for a box widget. Pixmaps are stored in the X11 '.xpm' 
 file format and can be part of the source code. Pixmaps support
 one transparent color.
+
 <h3><a name="preferences">preferences</h3>
 I do have my <tt>preferences</tt> in the morning, but sometimes I
 just can't remember a thing. This is where the <tt>Fl_Preferences</tt>
 come in handy. The remember any kind of data between program launches.
+
 <h3><a name="radio">radio</h3>
 The <tt>radio</tt> tool was created entirely with <i>fluid</i>. It
 shows some of the available btton types and tests radio 
 button behavior.
+
 <h3><a name="resizebox">resizebox</h3>
 <tt>resizebox</tt> shows some possible ways of FLTK's automatic
 resize bahavior..
+
 <h3><a name="resize">resize</h3>
 The <tt>resize</tt> demo tests size and position functions with
 the given window manager.
+
 <h3><a name="scroll">scroll</h3>
 <tt>scroll</tt> shows how to scroll an area of widgets, one of
 them beeing a slow custom drawing. <tt>Fl_Scroll</tt> uses 
 clipping and smart window area copying to improve redraw speed.
 The buttons at the bottom of the window test decoration rendering
 and updates.
+
 <h3><a name="shape">shape</h3>
 <tt>shape</tt> is a very minimal demo that shows how to create
 your own OpenGL rendering widget. Now that you know that, go ahead 
 and write that flight simulator you always dreamt of.
+
 <h3><a name="subwindow">subwindow</h3>
 The <tt>subwindow</tt> demo tests messaging and drawing between 
 the main window and 'true' sub windows. A sub window is differnt
 to a group by resetting the FLTK coordinate stystem to 0, 0 in the
 top left corner. On Win32 and X11, subwindows have their own 
 operating system specific handle.
+
+<h3><a name="sudoku">sudoku</h3>
+Another highly addictive game - don't play it, I warned you.
+The implementation shows how to create application icons,
+how to deal with OS specific, and how to generate sound.
+
 <h3><a name="symbols">symbols</h3>
 <tt>symbols</tt> are a speciality of FLTK. These little vector 
 drawings can be integrated into labels. They scale and rotate,
 and with a little patience, you can define your own. The rotation 
 number refers to 45 degree rotations if you were looking at a 
 numeric keypad (2 is down, 6 is right, etc.).
+
 <h3><a name="tabs">tabs</h3>
 The <tt>tabs</tt> tool was created with <i>fluid</i>. It tests
 correct hiding and redisplaying of tabs, navigation across tabs, 
 resize behavior, and no unneeded redrawing of invisible widgets.
+
 <h3><a name="threads">threads</h3>
 FLTK can be used in a multithreading environment. There are some
 limitations, mostly due to the underlying operating system. 
@@ -350,17 +420,21 @@ limitations, mostly due to the underlying operating system.
 <tt>Fl::unlock()</tt>, and <tt>Fl::awake()</tt> in secondary threads 
 to keep FLTK happy. Although locking works on all platforms, 
 this demo is not available on every machine.
+
 <h3><a name="tile">tile</h3>
 The <tt>tile</tt> tool shows a nice way of using <tt>Fl_Tile</tt>.
 To test correct resizing of subwindows, the widget for region 
 1 is created from an <tt>Fl_Window</tt> class.
+
 <h3><a name="tiled_image">tiled_image</h3>
 The <tt>tiled_image</tt> demo uses an image as the background
 for a window by repeating it over the full size of the widget.
 Thw window is resizable and shows how the image gets repeated.
+
 <h3><a name="valuators">valuators</h3>
 <tt>valuators</tt> shows all of FLTK's nifty widgets to change
 numeric values.
+
 <h3><a name="fluid">fluid</h3>
 <tt>fuid</tt> is not only a big test program, but also a very 
 useful visual UI designer. Many parts of <tt>fluid</tt> were