ae697b80b2
git-svn-id: file:///fltk/svn/fltk/branches/branch-1.3@6265 ea41ed52-d2ee-0310-a9c1-e6b18d33e121
98 lines
3.1 KiB
C++
98 lines
3.1 KiB
C++
//
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// "$Id$"
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//
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// Scroll bar header file for the Fast Light Tool Kit (FLTK).
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//
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// Copyright 1998-2008 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 on the following page:
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//
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// http://www.fltk.org/str.php
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//
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/** \file
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Fl_Scrollbar widget . */
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#ifndef Fl_Scrollbar_H
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#define Fl_Scrollbar_H
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#include "Fl_Slider.H"
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/**
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The Fl_Scrollbar widget displays a slider with arrow buttons
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at the ends of the scrollbar. Clicking on the arrows move up/left and
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down/right by linesize(). Scrollbars also accept
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FL_SHORTCUT events: the arrows move by linesize(), and
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vertical scrollbars take Page Up/Down (they move by the page size minus
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linesize()) and Home/End (they jump to the top or bottom).
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<P>Scrollbars have step(1) preset (they always return
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integers). If desired you can set the step() to non-integer
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values. You will then have to use casts to get at the floating-point
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versions of value() from Fl_Slider. </P>
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<P ALIGN=CENTER>\image html scrollbar.gif
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*/
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class FL_EXPORT Fl_Scrollbar : public Fl_Slider {
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int linesize_;
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int pushed_;
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static void timeout_cb(void*);
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void increment_cb();
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protected:
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void draw();
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public:
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Fl_Scrollbar(int x,int y,int w,int h, const char *l = 0);
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~Fl_Scrollbar();
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int handle(int);
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/**
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The first form returns the integer value of the scrollbar. You can get
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the floating point value with Fl_Slider::value(). The second
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form sets value(), range(), and slider_size()
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to make a variable-sized scrollbar. You should call this every time
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your window changes size, your data changes size, or your scroll
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position changes (even if in response to a callback from this
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scrollbar). All necessary calls to redraw() are done.
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*/
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int value() {return int(Fl_Slider::value());}
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/** See int Fl_Scrollbar::value() */
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int value(int p, int s, int top, int total) {
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return scrollvalue(p, s, top, total);
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}
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/**
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This number controls how big the steps are that the arrow keys do. In
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addition page up/down move by the size last sent to value()
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minus one linesize(). The default is 16.
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*/
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int linesize() const {return linesize_;}
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/**
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This number controls how big the steps are that the arrow keys do. In
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addition page up/down move by the size last sent to value()
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minus one linesize(). The default is 16.
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*/
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void linesize(int i) {linesize_ = i;}
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};
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#endif
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//
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// End of "$Id$".
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//
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