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_Roller.cxx b/common/fltk/src/Fl_Roller.cxx
new file mode 100644
index 0000000..8cfbf17
--- /dev/null
+++ b/common/fltk/src/Fl_Roller.cxx
@@ -0,0 +1,185 @@
+//
+// "$Id: Fl_Roller.cxx 7903 2010-11-28 21:06:39Z matt $"
+//
+// Roller widget 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
+//
+
+// Rapid-App style knob
+
+#include <FL/Fl.H>
+#include <FL/Fl_Roller.H>
+#include <FL/fl_draw.H>
+#include <math.h>
+
+int Fl_Roller::handle(int event) {
+ static int ipos;
+ int newpos = horizontal() ? Fl::event_x() : Fl::event_y();
+ switch (event) {
+ case FL_PUSH:
+ if (Fl::visible_focus()) {
+ Fl::focus(this);
+ redraw();
+ }
+ handle_push();
+ ipos = newpos;
+ return 1;
+ case FL_DRAG:
+ handle_drag(clamp(round(increment(previous_value(),newpos-ipos))));
+ return 1;
+ case FL_RELEASE:
+ handle_release();
+ return 1;
+ case FL_KEYBOARD :
+ switch (Fl::event_key()) {
+ case FL_Up:
+ if (horizontal()) return 0;
+ handle_drag(clamp(increment(value(),-1)));
+ return 1;
+ case FL_Down:
+ if (horizontal()) return 0;
+ handle_drag(clamp(increment(value(),1)));
+ return 1;
+ case FL_Left:
+ if (!horizontal()) return 0;
+ handle_drag(clamp(increment(value(),-1)));
+ return 1;
+ case FL_Right:
+ if (!horizontal()) return 0;
+ handle_drag(clamp(increment(value(),1)));
+ return 1;
+ default:
+ return 0;
+ }
+ // break not required because of switch...
+ case FL_FOCUS :
+ case FL_UNFOCUS :
+ if (Fl::visible_focus()) {
+ redraw();
+ return 1;
+ } else return 0;
+ case FL_ENTER :
+ case FL_LEAVE :
+ return 1;
+ default:
+ return 0;
+ }
+}
+
+void Fl_Roller::draw() {
+ if (damage()&FL_DAMAGE_ALL) draw_box();
+ int X = x()+Fl::box_dx(box());
+ int Y = y()+Fl::box_dy(box());
+ int W = w()-Fl::box_dw(box())-1;
+ int H = h()-Fl::box_dh(box())-1;
+ if (W<=0 || H <=0) return;
+ int offset = step() ? int(value()/step()) : 0;
+ const double ARC = 1.5; // 1/2 the number of radians visible
+ const double delta = .2; // radians per knurl
+ if (horizontal()) { // horizontal one
+ // draw shaded ends of wheel:
+ int h1 = W/4+1; // distance from end that shading starts
+ fl_color(color()); fl_rectf(X+h1,Y,W-2*h1,H);
+ for (int i=0; h1; i++) {
+ fl_color((Fl_Color)(FL_GRAY-i-1));
+ int h2 = FL_GRAY-i-1 > FL_DARK3 ? 2*h1/3+1 : 0;
+ fl_rectf(X+h2,Y,h1-h2,H);
+ fl_rectf(X+W-h1,Y,h1-h2,H);
+ h1 = h2;
+ }
+ if (active_r()) {
+ // draw ridges:
+ double junk;
+ for (double yy = -ARC+modf(offset*sin(ARC)/(W/2)/delta,&junk)*delta;;
+ yy += delta) {
+ int yy1 = int((sin(yy)/sin(ARC)+1)*W/2);
+ if (yy1 <= 0) continue; else if (yy1 >= W-1) break;
+ fl_color(FL_DARK3); fl_yxline(X+yy1,Y+1,Y+H-1);
+ if (yy < 0) yy1--; else yy1++;
+ fl_color(FL_LIGHT1);fl_yxline(X+yy1,Y+1,Y+H-1);
+ }
+ // draw edges:
+ h1 = W/8+1; // distance from end the color inverts
+ fl_color(FL_DARK2);
+ fl_xyline(X+h1,Y+H-1,X+W-h1);
+ fl_color(FL_DARK3);
+ fl_yxline(X,Y+H,Y,X+h1);
+ fl_xyline(X+W-h1,Y,X+W);
+ fl_color(FL_LIGHT2);
+ fl_xyline(X+h1,Y-1,X+W-h1);
+ fl_yxline(X+W,Y,Y+H,X+W-h1);
+ fl_xyline(X+h1,Y+H,X);
+ }
+ } else { // vertical one
+ // draw shaded ends of wheel:
+ int h1 = H/4+1; // distance from end that shading starts
+ fl_color(color()); fl_rectf(X,Y+h1,W,H-2*h1);
+ for (int i=0; h1; i++) {
+ fl_color((Fl_Color)(FL_GRAY-i-1));
+ int h2 = FL_GRAY-i-1 > FL_DARK3 ? 2*h1/3+1 : 0;
+ fl_rectf(X,Y+h2,W,h1-h2);
+ fl_rectf(X,Y+H-h1,W,h1-h2);
+ h1 = h2;
+ }
+ if (active_r()) {
+ // draw ridges:
+ double junk;
+ for (double yy = -ARC+modf(offset*sin(ARC)/(H/2)/delta,&junk)*delta;
+ ; yy += delta) {
+ int yy1 = int((sin(yy)/sin(ARC)+1)*H/2);
+ if (yy1 <= 0) continue; else if (yy1 >= H-1) break;
+ fl_color(FL_DARK3); fl_xyline(X+1,Y+yy1,X+W-1);
+ if (yy < 0) yy1--; else yy1++;
+ fl_color(FL_LIGHT1);fl_xyline(X+1,Y+yy1,X+W-1);
+ }
+ // draw edges:
+ h1 = H/8+1; // distance from end the color inverts
+ fl_color(FL_DARK2);
+ fl_yxline(X+W-1,Y+h1,Y+H-h1);
+ fl_color(FL_DARK3);
+ fl_xyline(X+W,Y,X,Y+h1);
+ fl_yxline(X,Y+H-h1,Y+H);
+ fl_color(FL_LIGHT2);
+ fl_yxline(X,Y+h1,Y+H-h1);
+ fl_xyline(X,Y+H,X+W,Y+H-h1);
+ fl_yxline(X+W,Y+h1,Y);
+ }
+ }
+
+ if (Fl::focus() == this) draw_focus(FL_THIN_UP_FRAME, x(), y(), w(), h());
+}
+
+/**
+ Creates a new Fl_Roller widget using the given position,
+ size, and label string. The default boxtype is FL_NO_BOX.
+ <P>Inherited destructor destroys the valuator.
+*/
+Fl_Roller::Fl_Roller(int X,int Y,int W,int H,const char* L)
+ : Fl_Valuator(X,Y,W,H,L) {
+ box(FL_UP_BOX);
+ step(1,1000);
+}
+
+//
+// End of "$Id: Fl_Roller.cxx 7903 2010-11-28 21:06:39Z matt $".
+//