mirror of https://github.com/fltk/fltk
223 lines
7.4 KiB
C++
223 lines
7.4 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; 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_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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The user can either type into the input area, or use the
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menu button chooser on the right, which loads the input area
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with predefined text. Normally it is drawn with an inset box
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and a white background.
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<P>
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The application can directly access both the input and menu
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widgets directly, using the menubutton()
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and input() 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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<P> Inherited destructor Destroys the widget and any value 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) : Fl_Group(x,y,w,h,l) {
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Fl_Group::box(FL_DOWN_BOX);
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align(FL_ALIGN_LEFT); // default like Fl_Input
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inp_ = new Fl_Input(inp_x(), inp_y(),
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inp_w(), inp_h());
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inp_->callback(inp_cb, (void*)this);
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inp_->box(FL_FLAT_BOX); // cosmetic
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inp_->when(FL_WHEN_CHANGED|FL_WHEN_NOT_CHANGED);
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menu_ = new InputMenuButton(menu_x(), menu_y(),
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menu_w(), menu_h());
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menu_->callback(menu_cb, (void*)this);
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menu_->box(FL_FLAT_BOX); // cosmetic
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end();
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}
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/** Adds an item to the menu.*/
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void add(const char *s) { menu_->add(s); }
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int changed() const { return inp_->changed() | Fl_Widget::changed();}
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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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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 encapsulated input text color attributes */
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Fl_Color textcolor() const { return (inp_->textcolor());}
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/** Sets the encapsulated input text color attributes */
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void textcolor(Fl_Color c) { inp_->textcolor(c);}
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/** Gets the encapsulated input text font attributes */
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Fl_Font textfont() const { return (inp_->textfont());}
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/** Sets the encapsulated input text font attributes */
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void textfont(Fl_Font f) { inp_->textfont(f);}
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/** Gets the encapsulated input size attributes */
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Fl_Fontsize textsize() const { return (inp_->textsize()); }
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/** Sets the encapsulated input size attributes */
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void textsize(Fl_Fontsize s) { inp_->textsize(s); }
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/** See void Fl_Input_Choice::value(const char *s) */
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const char* value() const { return (inp_->value()); }
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/**
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Sets or returns the input widget's current contents. The
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second form sets the contents using the index into the menu
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which you can set as an integer. Setting the value effectively
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'chooses' this menu item, and sets it as the new input text,
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deleting the previous text.
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*/
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void value(const char *val) { inp_->value(val); }
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/** See void Fl_Input_Choice::value(const char *s) */
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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 reference to the internal Fl_Menu_Button widget. */
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Fl_Menu_Button *menubutton() { return menu_; }
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/**
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Returns a reference to the internal Fl_Input widget.</p>
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*/
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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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