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- //
- // "$Id: Fl_Value_Output.cxx,v 1.6 1999/01/07 19:17:28 mike Exp $"
- //
- // Value output widget for the Fast Light Tool Kit (FLTK).
- //
- // Copyright 1998-1999 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 to "fltk-bugs@easysw.com".
- //
-
- // Fltk widget for drag-adjusting a floating point value.
- // This is much lighter than Fl_Value_Input because it has no text editor
- // If step() is zero then it can be used to display a floating-point value
-
- #include <FL/Fl.H>
- #include <FL/Fl_Value_Output.H>
- #include <FL/fl_draw.H>
-
- void Fl_Value_Output::draw() {
- Fl_Boxtype b = box() ? box() : FL_DOWN_BOX;
- int X = x()+Fl::box_dx(b);
- int Y = y()+Fl::box_dy(b);
- int W = w()-Fl::box_dw(b);
- int H = h()-Fl::box_dh(b);
- if (damage()&~FL_DAMAGE_CHILD)
- draw_box(b, color());
- else {
- fl_color(color());
- fl_rectf(X, Y, W, H);
- }
- char buf[128];
- format(buf);
- fl_color(active_r() ? textcolor() : inactive(textcolor()));
- fl_font(textfont(), textsize());
- fl_draw(buf,X+3,Y,W-6,H,FL_ALIGN_LEFT);
- }
-
- int Fl_Value_Output::handle(int event) {
- if (!step()) return 0;
- double v;
- int delta;
- int mx = Fl::event_x();
- static int ix, drag;
- switch (event) {
- case FL_PUSH:
- ix = mx;
- drag = Fl::event_button();
- handle_push();
- return 1;
- case FL_DRAG:
- delta = Fl::event_x()-ix;
- if (delta > 5) delta -= 5;
- else if (delta < -5) delta += 5;
- else delta = 0;
- switch (drag) {
- case 3: v = increment(previous_value(),delta*100); break;
- case 2: v = increment(previous_value(),delta*10); break;
- default:v = increment(previous_value(),delta); break;
- }
- v = round(v);
- handle_drag(soft()?softclamp(v):clamp(v));;
- return 1;
- case FL_RELEASE:
- handle_release();
- return 1;
- default:
- return 0;
- }
- }
-
- Fl_Value_Output::Fl_Value_Output(int x,int y,int w,int h,const char *l)
- : Fl_Valuator(x,y,w,h,l) {
- box(FL_NO_BOX);
- align(FL_ALIGN_LEFT);
- textfont_ = FL_HELVETICA;
- textsize_ = FL_NORMAL_SIZE;
- textcolor_ = FL_BLACK;
- soft_ = 0;
- }
-
- //
- // End of "$Id: Fl_Value_Output.cxx,v 1.6 1999/01/07 19:17:28 mike Exp $".
- //
-