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Added optimization for SGI builds (mike: please run autoconf before making

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a distribution).
Documentation fixes.


git-svn-id: file:///fltk/svn/fltk/trunk@259 ea41ed52-d2ee-0310-a9c1-e6b18d33e121
This commit is contained in:
Bill Spitzak
1999-01-31 07:43:16 +00:00
parent 4b8754ace4
commit 4c53a5d8f4
20 changed files with 164 additions and 176 deletions
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documentation/drawing.html
+7 -38
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@@ -18,9 +18,7 @@ identified by an 8-bit index that is stored in the widget's <TT>box()</TT>
<LI>You can call <A href=Fl_Window.html#Fl_Window.make_current><TT>
Fl_Window::make_current()</TT></A> to do incremental update of a
widget. Use <A href=Fl_Widget.html#Fl_Widget.window><TT>
Fl_Widget::window()</TT></A> to find the window. <I>Under X this only
works for the base <TT>Fl_Window</TT> class, not for double buffered,
overlay, or OpenGL windows!</I></LI>
Fl_Widget::window()</TT></A> to find the window.</LI>
</UL>
<H2>FLTK Drawing Functions</H2>
To use the drawing functions you must first include the <TT>
@@ -33,7 +31,6 @@ drawing functions:
<LI><A href=#complex>Complex Shapes</A></LI>
<LI><A href=#text>Text</A></LI>
<LI><A href=#images>Images</A></LI>
<LI><A href=#cursor>Cursor</A></LI>
<LI><A href=#overlay>Overlay</A></LI>
</UL>
<H3><A name=clipping>Clipping</A></H3>
@@ -72,7 +69,7 @@ is completely outside the region.
is <I>not</I> the X or WIN32 pixel, it is an index into an internal
table! The table provides several general colors, a 24-entry gray
ramp, and a 5x8x5 color cube. All of these are named with
symbols in <A href=enumerations.html#enumerations>
symbols in <A href=enumerations.html#colors>
<TT>&lt;FL/Enumerations.H&gt;</TT></A>.
<P>For colormapped displays, a color cell will be allocated out of <TT>
fl_colormap</TT> the first time you use a color. If the colormap fills
@@ -144,9 +141,9 @@ w - 1</TT> and <TT>h - 1</TT>. </P>
transformations. The functionality matches that found in Adobe&reg;
PostScript<SUP>TM</SUP>. The exact pixels that are filled is less defined
than for the previous calls so that FLTK can take advantage of drawing
hardware. The transformed vertices are rounded to integers before
drawing the line segments. This severely limits the accuracy of these
functions for complex graphics. Use OpenGL when greater accuracy
hardware. On both X and WIN32 the transformed vertices are rounded to integers before
drawing the line segments: this severely limits the accuracy of these
functions for complex graphics, so use OpenGL when greater accuracy
and/or performance is required.
<H4>void fl_push_matrix()
<BR> void fl_pop_matrix()</H4>
@@ -249,9 +246,8 @@ value points at a static buffer that is overwritten with each call.
above. You may call this outside a draw context if necessary to call <TT>
fl_width()</TT>, but on X this will open the display.
<P>The font is identified by a <TT>face</TT> and a <TT>size</TT>. The
size of the font is measured in <TT>pixels</TT> (i.e. it is not
&quot;resolution [in]dependent&quot;). Lines should be spaced <TT>size</TT>
pixels apart (or more). </P>
size of the font is measured in <TT>pixels</TT> (not "points"). Lines
should be spaced <TT>size</TT> pixels apart (or more). </P>
<P>The <TT>face</TT> is an index into an internal table. Initially
only the first 16 faces are filled in. There are symbolic names for
them: <TT>FL_HELVETICA</TT>, <TT>FL_TIMES</TT>, <TT>FL_COURIER</TT>,
@@ -263,33 +259,6 @@ since it stores the index as a byte. </P>
<BR> int fl_size()</H4>
Returns the face and size set by the most recent call to <TT>
fl_font(a,b)</TT>. This can be used to save/restore the font.
<H3><A name=cursor>Cursor</A></H3>
<H4>void fl_cursor(Fl_Cursor, Fl_Color = FL_WHITE, Fl_Color = FL_BLACK)</H4>
Change the cursor. Depending on the system this may affect the cursor
everywhere, or only when it is pointing at the window that is current
when you call this. For portability you should change the cursor back
to the default in response to <TT>FL_LEAVE</TT> events.
<P>The type <TT>Fl_Cursor</TT> is an enumeration defined in <A href=enumerations.html#enumerations>
<TT>&lt;Enumerations.H&gt;</TT></A>. The double-headed arrows are bitmaps
provided by FLTK on X, the others are provided by system-defined
cursors. Under X you can get any XC_cursor value by passing <TT>
Fl_Cursor((XC_foo/2)+1)</TT>. </P>
<P>The following standard cursors are available: </P>
<UL>
<LI><TT>FL_CURSOR_DEFAULT</TT> - the default cursor, usually an arrow </LI>
<LI><TT>FL_CURSOR_ARROW</TT> - an arrow pointer </LI>
<LI><TT>FL_CURSOR_CROSS</TT> - crosshair </LI>
<LI><TT>FL_CURSOR_WAIT</TT> - watch or hourglass </LI>
<LI><TT>FL_CURSOR_INSERT</TT> - I-beam </LI>
<LI><TT>FL_CURSOR_HAND</TT> - hand (uparrow on MSWindows) </LI>
<LI><TT>FL_CURSOR_HELP</TT> - question mark </LI>
<LI><TT>FL_CURSOR_MOVE</TT> - 4-pointed arrow </LI>
<LI><TT>FL_CURSOR_NS</TT> - up/down arrow </LI>
<LI><TT>FL_CURSOR_WE</TT> - left/right arrow </LI>
<LI><TT>FL_CURSOR_NWSE</TT> - diagonal arrow </LI>
<LI><TT>FL_CURSOR_NESW</TT> - diagonal arrow </LI>
<LI><TT>FL_CURSOR_NONE</TT> - invisible </LI>
</UL>
<H3><A name=overlay>Overlays</A></H3>
<H4>void fl_overlay_rect(int x, int y, int w, int h)
<BR> void fl_overlay_clear()</H4>