4b561b6e90
Updated the configure script for *BSD and GCC 2.95 (-fno-exceptions) Added install rule to documentation directory. Dumped old packages directory; added traditional RPM spec file and EPM list file (that replace all of the packages stuff) The FLUID man page is now "fluid.1" for the formatted page and "fluid.man" for the non-formatted page, since only IRIX uses pack'd formatted man pages. Whew! git-svn-id: file:///fltk/svn/fltk/branches/branch-1.0@1090 ea41ed52-d2ee-0310-a9c1-e6b18d33e121
256 lines
6.9 KiB
C++
256 lines
6.9 KiB
C++
//
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// "$Id: Fl_Slider.cxx,v 1.8.2.6 2000/04/25 22:16:30 mike Exp $"
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//
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// Slider widget for the Fast Light Tool Kit (FLTK).
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//
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// Copyright 1998-2000 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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#include <FL/Fl.H>
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#include <FL/Fl_Slider.H>
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#include <FL/fl_draw.H>
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#include <math.h>
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void Fl_Slider::_Fl_Slider() {
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slider_size_ = 0;
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slider_ = 0; // FL_UP_BOX;
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}
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Fl_Slider::Fl_Slider(int x, int y, int w, int h, const char* l)
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: Fl_Valuator(x, y, w, h, l) {
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box(FL_DOWN_BOX);
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_Fl_Slider();
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}
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Fl_Slider::Fl_Slider(uchar t, int x, int y, int w, int h, const char* l)
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: Fl_Valuator(x, y, w, h, l) {
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type(t);
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box(t==FL_HOR_NICE_SLIDER || t==FL_VERT_NICE_SLIDER ?
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FL_FLAT_BOX : FL_DOWN_BOX);
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_Fl_Slider();
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}
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void Fl_Slider::slider_size(double v) {
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if (v < 0) v = 0;
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if (v > 1) v = 1;
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if (slider_size_ != float(v)) {
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slider_size_ = float(v);
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damage(FL_DAMAGE_EXPOSE);
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}
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}
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void Fl_Slider::bounds(double a, double b) {
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if (minimum() != a || maximum() != b) {
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Fl_Valuator::bounds(a, b);
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damage(FL_DAMAGE_EXPOSE);
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}
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}
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int Fl_Slider::scrollvalue(int p, int w, int t, int l) {
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// p = position, first line displayed
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// w = window, number of lines displayed
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// t = top, number of first line
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// l = length, total number of lines
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step(1, 1);
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if (p+w > t+l) l = p+w-t;
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slider_size(w >= l ? 1.0 : double(w)/double(l));
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bounds(t, l-w+t);
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return value(p);
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}
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// All slider interaction is done as though the slider ranges from
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// zero to one, and the left (bottom) edge of the slider is at the
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// given position. Since when the slider is all the way to the
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// right (top) the left (bottom) edge is not all the way over, a
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// position on the widget itself covers a wider range than 0-1,
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// actually it ranges from 0 to 1/(1-size).
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void Fl_Slider::draw_bg(int x, int y, int w, int h) {
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if (!(damage()&FL_DAMAGE_ALL)) { // not a complete redraw
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draw_box();
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}
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Fl_Color black = active_r() ? FL_BLACK : FL_INACTIVE_COLOR;
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if (type() == FL_VERT_NICE_SLIDER) {
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draw_box(FL_THIN_DOWN_BOX, x+w/2-2, y, 4, h, black);
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} else if (type() == FL_HOR_NICE_SLIDER) {
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draw_box(FL_THIN_DOWN_BOX, x, y+h/2-2, w, 4, black);
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}
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}
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void Fl_Slider::draw(int x, int y, int w, int h) {
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double val;
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if (minimum() == maximum())
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val = 0.5;
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else {
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val = (value()-minimum())/(maximum()-minimum());
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if (val > 1.0) val = 1.0;
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else if (val < 0.0) val = 0.0;
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}
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int W = (horizontal() ? w : h);
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int X, S;
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if (type()==FL_HOR_FILL_SLIDER || type() == FL_VERT_FILL_SLIDER) {
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S = int(val*W+.5);
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if (minimum()>maximum()) {S = W-S; X = W-S;}
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else X = 0;
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} else {
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S = int(slider_size_*W+.5);
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int T = (horizontal() ? h : w)/2+1;
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if (type()==FL_VERT_NICE_SLIDER || type()==FL_HOR_NICE_SLIDER) T += 4;
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if (S < T) S = T;
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X = int(val*(W-S)+.5);
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}
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int xsl, ysl, wsl, hsl;
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if (horizontal()) {
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xsl = x+X;
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wsl = S;
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ysl = y;
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hsl = h;
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} else {
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ysl = y+X;
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hsl = S;
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xsl = x;
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wsl = w;
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}
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if (damage()&FL_DAMAGE_ALL) { // complete redraw
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draw_bg(x, y, w, h);
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} else { // partial redraw, clip off new position of slider
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if (X > 0) {
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if (horizontal()) fl_clip(x, ysl, X, hsl);
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else fl_clip(xsl, y, wsl, X);
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draw_bg(x, y, w, h);
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fl_pop_clip();
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}
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if (X+S < W) {
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if (horizontal()) fl_clip(xsl+wsl, ysl, x+w-xsl-wsl, hsl);
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else fl_clip(xsl, ysl+hsl, wsl, y+h-ysl-hsl);
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draw_bg(x, y, w, h);
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fl_pop_clip();
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}
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}
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Fl_Boxtype box1 = slider();
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if (!box1) {box1 = (Fl_Boxtype)(box()&-2); if (!box1) box1 = FL_UP_BOX;}
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if (type() == FL_VERT_NICE_SLIDER) {
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draw_box(box1, xsl, ysl, wsl, hsl, FL_GRAY);
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int d = (hsl-4)/2;
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draw_box(FL_THIN_DOWN_BOX, xsl+2, ysl+d, wsl-4, hsl-2*d,selection_color());
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} else if (type() == FL_HOR_NICE_SLIDER) {
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draw_box(box1, xsl, ysl, wsl, hsl, FL_GRAY);
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int d = (wsl-4)/2;
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draw_box(FL_THIN_DOWN_BOX, xsl+d, ysl+2, wsl-2*d, hsl-4,selection_color());
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} else {
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if (wsl>0 && hsl>0) draw_box(box1, xsl, ysl, wsl, hsl, selection_color());
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}
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draw_label(xsl, ysl, wsl, hsl);
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}
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void Fl_Slider::draw() {
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if (damage()&FL_DAMAGE_ALL) draw_box();
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draw(x()+Fl::box_dx(box()),
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y()+Fl::box_dy(box()),
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w()-Fl::box_dw(box()),
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h()-Fl::box_dh(box()));
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}
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int Fl_Slider::handle(int event, int x, int y, int w, int h) {
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switch (event) {
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case FL_PUSH:
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if (!Fl::event_inside(x, y, w, h)) return 0;
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handle_push();
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case FL_DRAG: {
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int W = (horizontal() ? w : h);
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//int H = (horizontal() ? h : w);
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int mx = (horizontal() ? Fl::event_x()-x : Fl::event_y()-y);
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int S = int(slider_size_*W+.5);
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int X;
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static int offcenter;
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double val =
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(maximum()-minimum()) ? (value()-minimum())/(maximum()-minimum()) : 0.5;
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if (type() == FL_HOR_FILL_SLIDER || type() == FL_VERT_FILL_SLIDER) {
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if (val >= 1.0) X = W;
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else if (val <= 0.0) X = 0;
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else X = int(val*W+.5);
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if (event == FL_PUSH) {
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offcenter = mx-X;
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if (offcenter < -S/2) offcenter = 0;
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else if (offcenter > S/2) offcenter = 0;
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else return 1;
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}
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S = 0;
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} else {
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if (val >= 1.0) X = W-S;
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else if (val <= 0.0) X = 0;
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else X = int(val*(W-S)+.5);
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if (event == FL_PUSH) {
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offcenter = mx-X;
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if (offcenter < 0) offcenter = 0;
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else if (offcenter > S) offcenter = S;
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else return 1;
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}
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}
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X = mx-offcenter;
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double v;
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TRY_AGAIN:
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if (X < 0) {
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X = 0;
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offcenter = mx; if (offcenter < 0) offcenter = 0;
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} else if (X > (W-S)) {
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X = W-S;
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offcenter = mx-X; if (offcenter > S) offcenter = S;
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}
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v = round(X*(maximum()-minimum())/(W-S) + minimum());
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// make sure a click outside the sliderbar moves it:
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if (event == FL_PUSH && v == value()) {
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offcenter = S/2;
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event = FL_DRAG;
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goto TRY_AGAIN;
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}
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handle_drag(clamp(v));
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} return 1;
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case FL_RELEASE:
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handle_release();
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return 1;
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default:
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return 0;
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}
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}
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int Fl_Slider::handle(int event) {
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return handle(event,
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x()+Fl::box_dx(box()),
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y()+Fl::box_dy(box()),
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w()-Fl::box_dw(box()),
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h()-Fl::box_dh(box()));
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}
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//
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// End of "$Id: Fl_Slider.cxx,v 1.8.2.6 2000/04/25 22:16:30 mike Exp $".
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//
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