6f42bc1a58
git-svn-id: file:///fltk/svn/fltk/branches/branch-1.0@1055 ea41ed52-d2ee-0310-a9c1-e6b18d33e121
133 lines
3.7 KiB
C++
133 lines
3.7 KiB
C++
//
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// "$Id: Fl_Value_Input.cxx,v 1.6.2.2 2000/04/04 17:05:59 bill Exp $"
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//
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// Value input widget for the Fast Light Tool Kit (FLTK).
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//
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// Copyright 1998-1999 by Bill Spitzak and others.
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//
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// This library is free software; you can redistribute it and/or
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// modify it under the terms of the GNU Library General Public
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// License as published by the Free Software Foundation; either
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// version 2 of the License, or (at your option) any later version.
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//
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// Library General Public License for more details.
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//
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// You should have received a copy of the GNU Library General Public
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// License along with this library; if not, write to the Free Software
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// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
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// USA.
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//
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// Please report all bugs and problems to "fltk-bugs@easysw.com".
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//
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// Fltk widget for drag-adjusting a floating point value.
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// Warning: this works by making a child Fl_Input object, even
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// though this object is *not* an Fl_Group. May be a kludge?
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#include <FL/Fl.H>
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#include <FL/Fl_Value_Input.H>
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#include <FL/Fl_Group.H>
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#include <stdlib.h>
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void Fl_Value_Input::input_cb(Fl_Widget*, void* v) {
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Fl_Value_Input& t = *(Fl_Value_Input*)v;
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double nv;
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if (t.step()>=1.0) nv = strtol(t.input.value(), 0, 0);
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else nv = strtod(t.input.value(), 0);
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if (nv != t.value() || t.when() & FL_WHEN_NOT_CHANGED) {
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t.set_value(nv);
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if (t.when()) {
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t.clear_changed();
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t.do_callback();
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} else {
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t.set_changed();
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}
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}
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}
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void Fl_Value_Input::draw() {
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if (damage()&~FL_DAMAGE_CHILD) input.clear_damage(FL_DAMAGE_ALL);
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input.box(box());
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input.color(color(), selection_color());
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input.draw();
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input.clear_damage();
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}
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void Fl_Value_Input::resize(int X, int Y, int W, int H) {
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Fl_Valuator::resize(X, Y, W, H);
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input.resize(X, Y, W, H);
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}
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void Fl_Value_Input::value_damage() {
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char buf[128];
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format(buf);
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input.value(buf);
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input.mark(input.position()); // turn off selection highlight
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}
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int Fl_Value_Input::handle(int event) {
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double v;
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int delta;
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int mx = Fl::event_x();
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static int ix, drag;
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switch (event) {
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case FL_PUSH:
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if (!step()) goto DEFAULT;
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ix = mx;
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drag = Fl::event_button();
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handle_push();
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return 1;
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case FL_DRAG:
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if (!step()) goto DEFAULT;
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delta = Fl::event_x()-ix;
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if (delta > 5) delta -= 5;
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else if (delta < -5) delta += 5;
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else delta = 0;
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switch (drag) {
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case 3: v = increment(previous_value(), delta*100); break;
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case 2: v = increment(previous_value(), delta*10); break;
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default:v = increment(previous_value(), delta); break;
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}
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v = round(v);
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handle_drag(soft()?softclamp(v):clamp(v));;
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return 1;
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case FL_RELEASE:
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if (!step()) goto DEFAULT;
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if (value() != previous_value() || !Fl::event_is_click())
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handle_release();
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else {
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input.handle(FL_PUSH);
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input.handle(FL_RELEASE);
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}
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return 1;
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case FL_FOCUS:
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return input.take_focus();
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default:
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DEFAULT:
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input.type(step()>=1.0 ? FL_INT_INPUT : FL_FLOAT_INPUT);
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return input.handle(event);
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}
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}
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Fl_Value_Input::Fl_Value_Input(int x, int y, int w, int h, const char* l)
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: Fl_Valuator(x, y, w, h, l), input(x, y, w, h, 0) {
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soft_ = 0;
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if (input.parent()) // defeat automatic-add
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((Fl_Group*)input.parent())->remove(input);
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input.parent(this); // kludge!
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input.callback(input_cb, this);
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input.when(FL_WHEN_CHANGED);
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box(input.box());
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color(input.color());
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selection_color(input.selection_color());
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align(FL_ALIGN_LEFT);
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value_damage();
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}
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//
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// End of "$Id: Fl_Value_Input.cxx,v 1.6.2.2 2000/04/04 17:05:59 bill Exp $".
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//
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