Include a stripped-down version of FLTK in tree and add a USE_INCLUDED_FLTK option to build against it.
git-svn-id: svn://svn.code.sf.net/p/tigervnc/code/trunk@4603 3789f03b-4d11-0410-bbf8-ca57d06f2519
diff --git a/common/fltk/src/fl_overlay.cxx b/common/fltk/src/fl_overlay.cxx
new file mode 100644
index 0000000..adcd871
--- /dev/null
+++ b/common/fltk/src/fl_overlay.cxx
@@ -0,0 +1,129 @@
+//
+// "$Id: fl_overlay.cxx 7903 2010-11-28 21:06:39Z matt $"
+//
+// Overlay support for the Fast Light Tool Kit (FLTK).
+//
+// Copyright 1998-2010 by Bill Spitzak and others.
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Library General Public
+// License as published by the Free Software Foundation; either
+// version 2 of the License, or (at your option) any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// Library General Public License for more details.
+//
+// You should have received a copy of the GNU Library General Public
+// License along with this library; if not, write to the Free Software
+// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
+// USA.
+//
+// Please report all bugs and problems on the following page:
+//
+// http://www.fltk.org/str.php
+//
+
+// Extremely limited "overlay" support. You can use this to drag out
+// a rectangle in response to mouse events. It is your responsibility
+// to erase the overlay before drawing anything that might intersect
+// it.
+
+#include <FL/x.H>
+#include <FL/fl_draw.H>
+#ifdef __APPLE__
+#include <config.h>
+#endif
+
+//#define USE_XOR
+
+static int px,py,pw,ph;
+
+#ifndef USE_XOR
+#include <stdlib.h>
+static uchar *bgN = 0L, *bgS = 0L, *bgE = 0L, *bgW = 0L;
+static int bgx, bgy, bgw, bgh;
+#endif
+
+static void draw_current_rect() {
+#ifdef USE_XOR
+# if defined(USE_X11)
+ XSetFunction(fl_display, fl_gc, GXxor);
+ XSetForeground(fl_display, fl_gc, 0xffffffff);
+ XDrawRectangle(fl_display, fl_window, fl_gc, px, py, pw, ph);
+ XSetFunction(fl_display, fl_gc, GXcopy);
+# elif defined(WIN32)
+ int old = SetROP2(fl_gc, R2_NOT);
+ fl_rect(px, py, pw, ph);
+ SetROP2(fl_gc, old);
+# elif defined(__APPLE_QUARTZ__)
+ // warning: Quartz does not support xor drawing
+ // Use the Fl_Overlay_Window instead.
+ fl_color(FL_WHITE);
+ fl_rect(px, py, pw, ph);
+# else
+# error unsupported platform
+# endif
+#else
+ if (bgN) { free(bgN); bgN = 0L; }
+ if (bgS) { free(bgS); bgS = 0L; }
+ if (bgE) { free(bgE); bgE = 0L; }
+ if (bgW) { free(bgW); bgW = 0L; }
+ if (pw>0 && ph>0) {
+ bgE = fl_read_image(0L, px+pw-1, py, 1, ph);
+ bgW = fl_read_image(0L, px, py, 1, ph);
+ bgS = fl_read_image(0L, px, py+ph-1, pw, 1);
+ bgN = fl_read_image(0L, px, py, pw, 1);
+ bgx = px; bgy = py;
+ bgw = pw; bgh = ph;
+ }
+ fl_color(FL_WHITE);
+ fl_line_style(FL_SOLID);
+ fl_rect(px, py, pw, ph);
+ fl_color(FL_BLACK);
+ fl_line_style(FL_DOT);
+ fl_rect(px, py, pw, ph);
+ fl_line_style(FL_SOLID);
+#endif
+}
+
+static void erase_current_rect() {
+#ifdef USE_XOR
+# ifdef __APPLE_QUARTZ__
+ fl_rect(px, py, pw, ph);
+# else
+ draw_current_rect();
+# endif
+#else
+ if (bgN) fl_draw_image(bgN, bgx, bgy, bgw, 1);
+ if (bgS) fl_draw_image(bgS, bgx, bgy+bgh-1, bgw, 1);
+ if (bgW) fl_draw_image(bgW, bgx, bgy, 1, bgh);
+ if (bgE) fl_draw_image(bgE, bgx+bgw-1, bgy, 1, bgh);
+#endif
+}
+
+/**
+ Erase a selection rectangle without drawing a new one
+ */
+void fl_overlay_clear() {
+ if (pw > 0) {erase_current_rect(); pw = 0;}
+}
+
+/**
+ Draws a selection rectangle, erasing a previous one by XOR'ing it first.
+ */
+void fl_overlay_rect(int x, int y, int w, int h) {
+ if (w < 0) {x += w; w = -w;} else if (!w) w = 1;
+ if (h < 0) {y += h; h = -h;} else if (!h) h = 1;
+ if (pw > 0) {
+ if (x==px && y==py && w==pw && h==ph) return;
+ erase_current_rect();
+ }
+ px = x; py = y; pw = w; ph = h;
+ draw_current_rect();
+}
+
+//
+// End of "$Id: fl_overlay.cxx 7903 2010-11-28 21:06:39Z matt $".
+//