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- //
- // "$Id: fl_shortcut.cxx,v 1.4.2.1 1999/05/11 09:39:31 bill Exp $"
- //
- // Shortcut support routines for the Fast Light Tool Kit (FLTK).
- //
- // Copyright 1998-1999 by Bill Spitzak and others.
- //
- // This library is free software; you can redistribute it and/or
- // modify it under the terms of the GNU Library General Public
- // License as published by the Free Software Foundation; either
- // version 2 of the License, or (at your option) any later version.
- //
- // This library is distributed in the hope that it will be useful,
- // but WITHOUT ANY WARRANTY; without even the implied warranty of
- // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- // Library General Public License for more details.
- //
- // You should have received a copy of the GNU Library General Public
- // License along with this library; if not, write to the Free Software
- // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
- // USA.
- //
- // Please report all bugs and problems to "fltk-bugs@easysw.com".
- //
-
- // Code to test and parse fltk shortcut numbers.
- //
- // A shortcut is a keysym or'd with shift flags. In the simplest
- // sense a shortcut is matched if the shift state is exactly as
- // given and the key returning that keysym is pressed.
- //
- // To make it easier to match some things it is more complex:
- //
- // Only FL_META, FL_ALT, FL_SHIFT, and FL_CTRL must be "off". A
- // zero in the other shift flags indicates "dont care".
- //
- // It also checks against the first character of Fl::event_text(),
- // and zero for FL_SHIFT means "don't care".
- // This allows punctuation shortcuts like "#" to work (rather than
- // calling it "shift+3")
-
- #include <FL/Fl.H>
- #include <FL/Fl_Widget.H>
- #include <FL/fl_draw.H>
- #include <ctype.h>
- #include <string.h>
- #ifndef WIN32
- #include <X11/Xlib.h>
- #endif
-
- int Fl::test_shortcut(int shortcut) {
- if (!shortcut) return 0;
-
- int shift = Fl::event_state();
- // see if any required shift flags are off:
- if ((shortcut&shift) != (shortcut&0x7fff0000)) return 0;
- // record shift flags that are wrong:
- int mismatch = (shortcut^shift)&0x7fff0000;
- // these three must always be correct:
- if (mismatch&(FL_META|FL_ALT|FL_CTRL)) return 0;
-
- int key = shortcut & 0xffff;
-
- // if shift is also correct, check for exactly equal keysyms:
- if (!(mismatch&(FL_SHIFT)) && key == Fl::event_key()) return 1;
-
- // try matching ascii, ignore shift:
- if (key == event_text()[0]) return 1;
-
- // kludge so that Ctrl+'_' works (as opposed to Ctrl+'^_'):
- if ((shift&FL_CTRL) && key >= 0x3f && key <= 0x5F
- && event_text()[0]==(key^0x40)) return 1;
- return 0;
- }
-
- const char * fl_shortcut_label(int shortcut) {
- static char buf[20];
- char *p = buf;
- if (!shortcut) {*p = 0; return buf;}
- if (shortcut & FL_META) {strcpy(p,"Meta+"); p += 5;}
- if (shortcut & FL_ALT) {strcpy(p,"Alt+"); p += 4;}
- if (shortcut & FL_SHIFT) {strcpy(p,"Shift+"); p += 6;}
- if (shortcut & FL_CTRL) {strcpy(p,"Ctrl+"); p += 5;}
- int key = shortcut & 0xFFFF;
- #ifdef WIN32
- if (key >= FL_F && key <= FL_F_Last) {
- *p++ = 'F';
- if (key > FL_F+9) *p++ = (key-FL_F)/10+'0';
- *p++ = (key-FL_F)%10 + '0';
- } else {
- if (key == FL_Enter || key == '\r') {strcpy(p,"Enter"); return buf;}
- *p++ = uchar(key);
- }
- *p = 0;
- return buf;
- #else
- const char* q;
- if (key == FL_Enter || key == '\r') q="Enter"; // don't use Xlib's "Return"
- else if (key > 32 && key < 0x100) q = 0;
- else q = XKeysymToString(key);
- if (!q) {*p++ = uchar(key); *p = 0; return buf;}
- if (p > buf) {strcpy(p,q); return buf;} else return q;
- #endif
- }
-
- // Tests for &x shortcuts in button labels:
-
- int Fl_Widget::test_shortcut(const char *label) {
- char c = Fl::event_text()[0];
- if (!c || !label) return 0;
- for (;;) {
- if (!*label) return 0;
- if (*label++ == '&' && *label) {
- if (*label == '&') label++;
- else if (*label == c) return 1;
- else return 0;
- }
- }
- }
-
- int Fl_Widget::test_shortcut() {
- if (!(flags()&SHORTCUT_LABEL)) return 0;
- return test_shortcut(label());
- }
-
- //
- // End of "$Id: fl_shortcut.cxx,v 1.4.2.1 1999/05/11 09:39:31 bill Exp $".
- //
-