ecc47d0cc3
"Arrows" in widgets are those GUI elements mostly represented by
triangles pointing in a particular direction as in scrollbars,
choice widgets, some menus, valuators and Fl_Counter widgets.
The code has been simplified and standardized such that all these
GUI elements are drawn identically per FLTK scheme.
Widget authors no longer need to write code to calculate arrow sizes
and draw polygons etc.
Different schemes can and do implement different drawing functions.
Todo: see comments "FIXME_ARROW" in src/Fl_Menu_Button.cxx and
src/Fl_Menu.cxx
112 lines
3.0 KiB
C++
112 lines
3.0 KiB
C++
//
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// Counter header file for the Fast Light Tool Kit (FLTK).
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//
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// Copyright 1998-2022 by Bill Spitzak and others.
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//
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// This library is free software. Distribution and use rights are outlined in
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// the file "COPYING" which should have been included with this file. If this
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// file is missing or damaged, see the license at:
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//
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// https://www.fltk.org/COPYING.php
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//
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// Please see the following page on how to report bugs and issues:
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//
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// https://www.fltk.org/bugs.php
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//
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/* \file
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Fl_Counter widget . */
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// A numerical value with up/down step buttons. From Forms.
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#ifndef Fl_Counter_H
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#define Fl_Counter_H
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#ifndef Fl_Valuator_H
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#include "Fl_Valuator.H"
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#endif
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// values for type():
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#define FL_NORMAL_COUNTER 0 /**< type() for counter with fast buttons */
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#define FL_SIMPLE_COUNTER 1 /**< type() for counter without fast buttons */
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/**
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Controls a single floating point value with button (or keyboard) arrows.
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Double arrows buttons achieve larger steps than simple arrows.
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\see Fl_Spinner for value input with vertical step arrows.
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\image html counter.png
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\image latex counter.png "Fl_Counter" width=4cm
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\todo Refactor the doxygen comments for Fl_Counter type() documentation.
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The type of an Fl_Counter object can be set using type(uchar t) to:
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\li \c FL_NORMAL_COUNTER: Displays a counter with 4 arrow buttons.
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\li \c FL_SIMPLE_COUNTER: Displays a counter with only 2 arrow buttons.
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*/
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class FL_EXPORT Fl_Counter : public Fl_Valuator {
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Fl_Font textfont_;
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Fl_Fontsize textsize_;
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Fl_Color textcolor_;
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double lstep_;
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uchar mouseobj_;
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static void repeat_callback(void *);
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int calc_mouseobj();
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void increment_cb();
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protected:
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void draw();
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// compute widths of arrow boxes
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void arrow_widths(int &w1, int &w2);
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public:
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int handle(int);
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Fl_Counter(int X, int Y, int W, int H, const char* L = 0);
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~Fl_Counter();
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/**
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Sets the increment for the large step buttons.
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The default value is 1.0.
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\param[in] a large step increment.
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*/
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void lstep(double a) {lstep_ = a;}
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/**
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Sets the increments for the normal and large step buttons.
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\param[in] a, b normal and large step increments.
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*/
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void step(double a,double b) {Fl_Valuator::step(a); lstep_ = b;}
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/**
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Sets the increment for the normal step buttons.
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\param[in] a normal step increment.
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*/
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void step(double a) {Fl_Valuator::step(a);}
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/**
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Returns the increment for normal step buttons.
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*/
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double step() const {return Fl_Valuator::step();}
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/** Gets the text font */
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Fl_Font textfont() const {return textfont_;}
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/** Sets the text font to \p s */
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void textfont(Fl_Font s) {textfont_ = s;}
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/** Gets the font size */
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Fl_Fontsize textsize() const {return textsize_;}
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/** Sets the font size to \p s */
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void textsize(Fl_Fontsize s) {textsize_ = s;}
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/** Gets the font color */
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Fl_Color textcolor() const {return textcolor_;}
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/** Sets the font color to \p s */
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void textcolor(Fl_Color s) {textcolor_ = s;}
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};
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#endif
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