ref: 3d94702bea267035144836a5929129fd848b4d79
dir: /DoConfig/fltk/src/Fl_Choice.cxx/
//
// "$Id$"
//
// Choice widget for the Fast Light Tool Kit (FLTK).
//
// Copyright 1998-2015 by Bill Spitzak and others.
//
// This library is free software. Distribution and use rights are outlined in
// the file "COPYING" which should have been included with this file. If this
// file is missing or damaged, see the license at:
//
// http://www.fltk.org/COPYING.php
//
// Please report all bugs and problems on the following page:
//
// http://www.fltk.org/str.php
//
#include <FL/Fl.H>
#include <FL/Fl_Choice.H>
#include <FL/fl_draw.H>
#include "flstring.h"
// Emulates the Forms choice widget. This is almost exactly the same
// as an Fl_Menu_Button. The only difference is the appearance of the
// button: it draws the text of the current pick and a down-arrow.
void Fl_Choice::draw() {
Fl_Boxtype btype = Fl::scheme() ? FL_UP_BOX // non-default uses up box
: FL_DOWN_BOX; // default scheme uses down box
int dx = Fl::box_dx(btype);
int dy = Fl::box_dy(btype);
// Arrow area
int H = h() - 2 * dy;
int W = Fl::is_scheme("gtk+") ? 20 : // gtk+ -- fixed size
Fl::is_scheme("gleam") ? 20 : // gleam -- fixed size
Fl::is_scheme("plastic") ? ((H > 20) ? 20 : H) // plastic: shrink if H<20
: ((H > 20) ? 20 : H); // default: shrink if H<20
int X = x() + w() - W - dx;
int Y = y() + dy;
// Arrow object
int w1 = (W - 4) / 3; if (w1 < 1) w1 = 1;
int x1 = X + (W - 2 * w1 - 1) / 2;
int y1 = Y + (H - w1 - 1) / 2;
if (Fl::scheme()) {
// NON-DEFAULT SCHEME
// Draw widget box
draw_box(btype, color());
// Draw arrow area
fl_color(active_r() ? labelcolor() : fl_inactive(labelcolor()));
if (Fl::is_scheme("plastic")) {
// Show larger up/down arrows...
fl_polygon(x1, y1 + 3, x1 + w1, y1 + w1 + 3, x1 + 2 * w1, y1 + 3);
fl_polygon(x1, y1 + 1, x1 + w1, y1 - w1 + 1, x1 + 2 * w1, y1 + 1);
} else {
// Show smaller up/down arrows with a divider...
x1 = x() + w() - 13 - dx;
y1 = y() + h() / 2;
fl_polygon(x1, y1 - 2, x1 + 3, y1 - 5, x1 + 6, y1 - 2);
fl_polygon(x1, y1 + 2, x1 + 3, y1 + 5, x1 + 6, y1 + 2);
fl_color(fl_darker(color()));
fl_yxline(x1 - 7, y1 - 8, y1 + 8);
fl_color(fl_lighter(color()));
fl_yxline(x1 - 6, y1 - 8, y1 + 8);
}
} else {
// DEFAULT SCHEME
// Draw widget box
if (fl_contrast(textcolor(), FL_BACKGROUND2_COLOR) == textcolor()) {
draw_box(btype, FL_BACKGROUND2_COLOR);
} else {
draw_box(btype, fl_lighter(color()));
}
// Draw arrow area
draw_box(FL_UP_BOX,X,Y,W,H,color());
fl_color(active_r() ? labelcolor() : fl_inactive(labelcolor()));
fl_polygon(x1, y1, x1 + w1, y1 + w1, x1 + 2 * w1, y1);
}
W += 2 * dx;
// Draw menu item's label
if (mvalue()) {
Fl_Menu_Item m = *mvalue();
if (active_r()) m.activate(); else m.deactivate();
// Clip
int xx = x() + dx, yy = y() + dy + 1, ww = w() - W, hh = H - 2;
fl_push_clip(xx, yy, ww, hh);
if ( Fl::scheme()) {
Fl_Label l;
l.value = m.text;
l.image = 0;
l.deimage = 0;
l.type = m.labeltype_;
l.font = m.labelsize_ || m.labelfont_ ? m.labelfont_ : textfont();
l.size = m.labelsize_ ? m.labelsize_ : textsize();
l.color= m.labelcolor_ ? m.labelcolor_ : textcolor();
if (!m.active()) l.color = fl_inactive((Fl_Color)l.color);
fl_draw_shortcut = 2; // hack value to make '&' disappear
l.draw(xx+3, yy, ww>6 ? ww-6 : 0, hh, FL_ALIGN_LEFT);
fl_draw_shortcut = 0;
if ( Fl::focus() == this ) draw_focus(box(), xx, yy, ww, hh);
}
else {
fl_draw_shortcut = 2; // hack value to make '&' disappear
m.draw(xx, yy, ww, hh, this, Fl::focus() == this);
fl_draw_shortcut = 0;
}
fl_pop_clip();
}
// Widget's label
draw_label();
}
/**
Create a new Fl_Choice widget using the given position, size and label string.
The default boxtype is \c FL_UP_BOX.
The constructor sets menu() to NULL.
See Fl_Menu_ for the methods to set or change the menu.
\param[in] X, Y, W, H position and size of the widget
\param[in] L widget label, default is no label
*/
Fl_Choice::Fl_Choice(int X, int Y, int W, int H, const char *L)
: Fl_Menu_(X,Y,W,H,L) {
align(FL_ALIGN_LEFT);
when(FL_WHEN_RELEASE);
textfont(FL_HELVETICA);
box(FL_FLAT_BOX);
down_box(FL_BORDER_BOX);
}
/**
Sets the currently selected value using a pointer to menu item.
Changing the selected value causes a redraw().
\param[in] v pointer to menu item in the menu item array.
\returns non-zero if the new value is different to the old one.
*/
int Fl_Choice::value(const Fl_Menu_Item *v) {
if (!Fl_Menu_::value(v)) return 0;
redraw();
return 1;
}
/**
Sets the currently selected value using the index into the menu item array.
Changing the selected value causes a redraw().
\param[in] v index of value in the menu item array.
\returns non-zero if the new value is different to the old one.
*/
int Fl_Choice::value(int v) {
if (v == -1) return value((const Fl_Menu_Item *)0);
if (v < 0 || v >= (size() - 1)) return 0;
if (!Fl_Menu_::value(v)) return 0;
redraw();
return 1;
}
int Fl_Choice::handle(int e) {
if (!menu() || !menu()->text) return 0;
const Fl_Menu_Item* v;
Fl_Widget_Tracker wp(this);
switch (e) {
case FL_ENTER:
case FL_LEAVE:
return 1;
case FL_KEYBOARD:
if (Fl::event_key() != ' ' ||
(Fl::event_state() & (FL_SHIFT | FL_CTRL | FL_ALT | FL_META))) return 0;
case FL_PUSH:
if (Fl::visible_focus()) Fl::focus(this);
J1:
if (Fl::scheme()
|| fl_contrast(textcolor(), FL_BACKGROUND2_COLOR) != textcolor()) {
v = menu()->pulldown(x(), y(), w(), h(), mvalue(), this);
if (wp.deleted()) return 1;
} else {
// In order to preserve the old look-n-feel of "white" menus,
// temporarily override the color() of this widget...
Fl_Color c = color();
color(FL_BACKGROUND2_COLOR);
v = menu()->pulldown(x(), y(), w(), h(), mvalue(), this);
if (wp.deleted()) return 1;
color(c);
}
if (!v || v->submenu()) return 1;
if (v != mvalue()) redraw();
picked(v);
return 1;
case FL_SHORTCUT:
if (Fl_Widget::test_shortcut()) goto J1;
v = menu()->test_shortcut();
if (!v) return 0;
if (v != mvalue()) redraw();
picked(v);
return 1;
case FL_FOCUS:
case FL_UNFOCUS:
if (Fl::visible_focus()) {
redraw();
return 1;
} else return 0;
default:
return 0;
}
}
//
// End of "$Id$".
//