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- //
- // "$Id: Fl_Adjuster.cxx,v 1.5 1999/01/07 19:17:16 mike Exp $"
- //
- // Adjuster 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".
- //
-
-
- #include <FL/Fl.H>
- #include <FL/Fl_Adjuster.H>
- #include <FL/Fl_Bitmap.H>
- #include <FL/fl_draw.H>
-
- #include "fastarrow.h"
- static Fl_Bitmap fastarrow(fastarrow_bits, fastarrow_width, fastarrow_height);
- #include "mediumarrow.h"
- static Fl_Bitmap mediumarrow(mediumarrow_bits, mediumarrow_width, mediumarrow_height);
- #include "slowarrow.h"
- static Fl_Bitmap slowarrow(slowarrow_bits, slowarrow_width, slowarrow_height);
-
- // changing the value does not change the appearance:
- void Fl_Adjuster::value_damage() {}
-
- void Fl_Adjuster::draw() {
- int dx, dy, W, H;
- if (w()>=h()) {
- dx = W = w()/3;
- dy = 0; H = h();
- } else {
- dx = 0; W = w();
- dy = H = h()/3;
- }
- draw_box(drag==1?FL_DOWN_BOX:box(), x(), y()+2*dy, W, H, color());
- draw_box(drag==2?FL_DOWN_BOX:box(), x()+dx, y()+dy, W, H, color());
- draw_box(drag==3?FL_DOWN_BOX:box(), x()+2*dx, y(), W, H, color());
- if (active_r())
- fl_color(selection_color());
- else
- fl_color(inactive(selection_color()));
- fastarrow.draw(x()+(W-fastarrow_width)/2,
- y()+2*dy+(H-fastarrow_height)/2, W, H);
- mediumarrow.draw(x()+dx+(W-mediumarrow_width)/2,
- y()+dy+(H-mediumarrow_height)/2, W, H);
- slowarrow.draw(x()+2*dx+(W-slowarrow_width)/2,
- y()+(H-slowarrow_width)/2, W, H);
- }
-
- int Fl_Adjuster::handle(int event) {
- double v;
- int delta;
- int mx = Fl::event_x();
- switch (event) {
- case FL_PUSH:
- ix = mx;
- if (w()>=h())
- drag = 3*(mx-x())/w() + 1;
- else
- drag = 3-3*(Fl::event_y()-y()-1)/h();
- handle_push();
- redraw();
- return 1;
- case FL_DRAG:
- if (w() >= h()) {
- delta = x()+(drag-1)*w()/3; // left edge of button
- if (mx < delta)
- delta = mx-delta;
- else if (mx > (delta+w()/3)) // right edge of button
- delta = mx-delta-w()/3;
- else
- delta = 0;
- } else {
- if (mx < x())
- delta = mx-x();
- else if (mx > (x()+w()))
- delta = mx-x()-w();
- else
- delta = 0;
- }
- switch (drag) {
- case 3: v = increment(previous_value(), delta); break;
- case 2: v = increment(previous_value(), delta*10); break;
- default:v = increment(previous_value(), delta*100); break;
- }
- handle_drag(soft() ? softclamp(v) : clamp(v));
- return 1;
- case FL_RELEASE:
- if (Fl::event_is_click()) { // detect click but no drag
- if (Fl::event_state()&0xF0000) delta = -10;
- else delta = 10;
- switch (drag) {
- case 3: v = increment(previous_value(), delta); break;
- case 2: v = increment(previous_value(), delta*10); break;
- default:v = increment(previous_value(), delta*100); break;
- }
- handle_drag(soft() ? softclamp(v) : clamp(v));
- }
- drag = 0;
- redraw();
- handle_release();
- return 1;
- }
- return 0;
- }
-
- Fl_Adjuster::Fl_Adjuster(int x, int y, int w, int h, const char* l)
- : Fl_Valuator(x, y, w, h, l) {
- box(FL_UP_BOX);
- step(1, 10000);
- selection_color(FL_BLACK);
- drag = 0;
- soft_ = 1;
- }
-
- //
- // End of "$Id: Fl_Adjuster.cxx,v 1.5 1999/01/07 19:17:16 mike Exp $".
- //
-