mirror of https://github.com/fltk/fltk
223 lines
7.6 KiB
C++
223 lines
7.6 KiB
C++
//
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// "$Id$"
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//
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// An input/chooser widget.
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// ______________ ____
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// | || __ |
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// | input area || \/ |
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// |______________||____|
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//
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// Copyright 1998-2010 by Bill Spitzak and others.
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// Copyright 2004 by Greg Ercolano.
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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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// http://www.fltk.org/COPYING.php
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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_Input_Choice widget . */
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#ifndef Fl_Input_Choice_H
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#define Fl_Input_Choice_H
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#include <FL/Fl.H>
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#include <FL/Fl_Group.H>
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#include <FL/Fl_Input.H>
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#include <FL/Fl_Menu_Button.H>
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#include <FL/fl_draw.H>
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#include <string.h>
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/**
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A combination of the input widget and a menu button.
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\image html input_choice.jpg
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\image latex input_choice.jpg "Fl_Input_Choice widget" width=6cm
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The user can either type into the input area, or use the
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menu button chooser on the right to choose an item which loads
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the input area with the selected text.
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<P>
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The application can directly access both the internal Fl_Input
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and Fl_Menu_Button widgets respectively using the input() and menubutton()
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accessor methods.
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*/
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class FL_EXPORT Fl_Input_Choice : public Fl_Group {
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// Private class to handle slightly 'special' behavior of menu button
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class InputMenuButton : public Fl_Menu_Button {
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void draw() {
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draw_box(FL_UP_BOX, color());
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fl_color(active_r() ? labelcolor() : fl_inactive(labelcolor()));
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int xc = x()+w()/2, yc=y()+h()/2;
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fl_polygon(xc-5,yc-3,xc+5,yc-3,xc,yc+3);
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if (Fl::focus() == this) draw_focus();
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}
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public:
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InputMenuButton(int X,int Y,int W,int H,const char*L=0) :
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Fl_Menu_Button(X, Y, W, H, L) { box(FL_UP_BOX); }
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};
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Fl_Input *inp_;
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InputMenuButton *menu_;
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static void menu_cb(Fl_Widget*, void *data) {
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Fl_Input_Choice *o=(Fl_Input_Choice *)data;
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Fl_Widget_Tracker wp(o);
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const Fl_Menu_Item *item = o->menubutton()->mvalue();
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if (item && item->flags & (FL_SUBMENU|FL_SUBMENU_POINTER)) return; // ignore submenus
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if (!strcmp(o->inp_->value(), o->menu_->text()))
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{
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o->Fl_Widget::clear_changed();
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if (o->when() & FL_WHEN_NOT_CHANGED)
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o->do_callback();
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}
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else
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{
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o->inp_->value(o->menu_->text());
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o->inp_->set_changed();
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o->Fl_Widget::set_changed();
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if (o->when() & (FL_WHEN_CHANGED|FL_WHEN_RELEASE))
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o->do_callback();
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}
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if (wp.deleted()) return;
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if (o->callback() != default_callback)
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{
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o->Fl_Widget::clear_changed();
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o->inp_->clear_changed();
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}
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}
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static void inp_cb(Fl_Widget*, void *data) {
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Fl_Input_Choice *o=(Fl_Input_Choice *)data;
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Fl_Widget_Tracker wp(o);
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if (o->inp_->changed()) {
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o->Fl_Widget::set_changed();
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if (o->when() & (FL_WHEN_CHANGED|FL_WHEN_RELEASE))
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o->do_callback();
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} else {
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o->Fl_Widget::clear_changed();
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if (o->when() & FL_WHEN_NOT_CHANGED)
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o->do_callback();
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}
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if (wp.deleted()) return;
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if (o->callback() != default_callback)
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o->Fl_Widget::clear_changed();
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}
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// Custom resize behavior -- input stretches, menu button doesn't
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inline int inp_x() { return(x() + Fl::box_dx(box())); }
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inline int inp_y() { return(y() + Fl::box_dy(box())); }
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inline int inp_w() { return(w() - Fl::box_dw(box()) - 20); }
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inline int inp_h() { return(h() - Fl::box_dh(box())); }
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inline int menu_x() { return(x() + w() - 20 - Fl::box_dx(box())); }
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inline int menu_y() { return(y() + Fl::box_dy(box())); }
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inline int menu_w() { return(20); }
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inline int menu_h() { return(h() - Fl::box_dh(box())); }
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public:
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/**
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Creates a new Fl_Input_Choice widget using the given position, size,
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and label string.
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Inherited destructor destroys the widget and any values associated with it.
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*/
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Fl_Input_Choice(int X,int Y,int W,int H,const char*L=0);
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/** Adds an item to the menu.
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You can access the more complex Fl_Menu_Button::add() methods
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(setting callbacks, userdata, etc), via menubutton(). Example:
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\code
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Fl_Input_Choice *choice = new Fl_Input_Choice(100,10,120,25,"Fonts");
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Fl_Menu_Button *mb = choice->menubutton(); // use Fl_Input_Choice's Fl_Menu_Button
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mb->add("Helvetica", 0, MyFont_CB, (void*)mydata); // use Fl_Menu_Button's add() methods
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mb->add("Courier", 0, MyFont_CB, (void*)mydata);
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mb->add("More..", 0, FontDialog_CB, (void*)mydata);
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\endcode
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*/
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void add(const char *s) { menu_->add(s); }
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/** Returns the combined changed() state of the input and menu button widget. */
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int changed() const { return inp_->changed() | Fl_Widget::changed(); }
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/** Clears the changed() state of both input and menu button widgets. */
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void clear_changed() {
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inp_->clear_changed();
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Fl_Widget::clear_changed();
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}
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/** Sets the changed() state of both input and menu button widgets
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to the specfied value.*/
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void set_changed() {
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inp_->set_changed();
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// no need to call Fl_Widget::set_changed()
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}
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/** Removes all items from the menu. */
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void clear() { menu_->clear(); }
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/** Gets the box type of the menu button */
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Fl_Boxtype down_box() const { return (menu_->down_box()); }
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/** Sets the box type of the menu button */
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void down_box(Fl_Boxtype b) { menu_->down_box(b); }
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/** Gets the Fl_Menu_Item array used for the menu. */
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const Fl_Menu_Item *menu() { return (menu_->menu()); }
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/** Sets the Fl_Menu_Item array used for the menu. */
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void menu(const Fl_Menu_Item *m) { menu_->menu(m); }
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void resize(int X, int Y, int W, int H) {
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Fl_Group::resize(X,Y,W,H);
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inp_->resize(inp_x(), inp_y(), inp_w(), inp_h());
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menu_->resize(menu_x(), menu_y(), menu_w(), menu_h());
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}
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/// Gets the Fl_Input text field's text color.
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Fl_Color textcolor() const { return (inp_->textcolor());}
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/// Sets the Fl_Input text field's text color to \p c.
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void textcolor(Fl_Color c) { inp_->textcolor(c);}
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/// Gets the Fl_Input text field's font style.
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Fl_Font textfont() const { return (inp_->textfont());}
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/// Sets the Fl_Input text field's font style to \p f.
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void textfont(Fl_Font f) { inp_->textfont(f);}
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/// Gets the Fl_Input text field's font size
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Fl_Fontsize textsize() const { return (inp_->textsize()); }
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/// Sets the Fl_Input text field's font size to \p s.
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void textsize(Fl_Fontsize s) { inp_->textsize(s); }
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/// Returns the Fl_Input text field's current contents.
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const char* value() const { return (inp_->value()); }
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/** Sets the Fl_Input text field's contents to \p val.
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Does not affect the menu selection.*/
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void value(const char *val) { inp_->value(val); }
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/** Chooses item# \p val in the menu, and sets the Fl_Input text field
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to that value. Any previous text is cleared.*/
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void value(int val) {
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menu_->value(val);
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inp_->value(menu_->text(val));
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}
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/** Returns a pointer to the internal Fl_Menu_Button widget.
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This can be used to access any of the methods of the menu button, e.g.
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\code
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Fl_Input_Choice *choice = new Fl_Input_Choice(100,10,120,25,"Choice:");
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[..]
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// Print all the items in the choice menu
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for ( int t=0; t<choice->menubutton()->size(); t++ ) {
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const Fl_Menu_Item &item = choice->menubutton()->menu()[t];
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printf("item %d -- label=%s\n", t, item.label() ? item.label() : "(Null)");
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}
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\endcode
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*/
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Fl_Menu_Button *menubutton() { return menu_; }
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/** Returns a pointer to the internal Fl_Input widget.
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This can be used to directly access all of the Fl_Input widget's
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methods.*/
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Fl_Input *input() { return inp_; }
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};
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#endif // !Fl_Input_Choice_H
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//
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// End of "$Id$".
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//
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