ref: 73b99b6d78ee97781af3734d96bb7a24c9e85d8e
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 "$Id$". //