Replace the C++ implementation with the Rust port

The Rust port (formerly gipfel-rs) is now the official successor to the
FLTK/GSL C++ code base. This squashes the port into a single commit and
removes the C++ sources (they remain in the git history below).

Layout:
  crates/gipfel-core  headless core: hills, panorama geometry, projections
                      (maxima-generated derivatives), pure-Rust LM fit,
                      gipfel: JPEG comment + EXIF I/O, profiles, stitching
  crates/gipfel-cli   command-line tools (export, info, stitch, profiles)
  crates/gipfel-app   Cosmic DE (libcosmic) GUI, binary name `gipfel`
  codegen/            maxima scripts + regen.sh for the projection code
  tests/              golden files + C++ reference harnesses (historical)

The original README is kept for now; it will be updated to describe the
Rust build. gipfel.dat, AUTHORS, ChangeLog and NEWS are unchanged.

1 files changed, 0 insertions, 137 deletions

diff --git a/src/Fl_Search_Chooser.cxx b/src/Fl_Search_Chooser.cxx
deleted file mode 100644
index 286516c..0000000
--- a/src/Fl_Search_Chooser.cxx
+++ /dev/null
@@ -1,137 +0,0 @@
-//
-// Copyright 2006-2009 Johannes Hofmann <Johannes.Hofmann@gmx.de>
-//
-// This software may be used and distributed according to the terms
-// of the GNU General Public License, incorporated herein by reference.
-
-#include <stdio.h>
-#include <string.h>
-#include <FL/Fl.H>
-#include <FL/Fl_Window.H>
-#include <FL/Fl_Button.H>
-#include "Fl_Search_Chooser.H"
-
-int
-Fl_Search_Browser::find_prefix(const char *p) {
-	int i = find_prefix(p, 1, size());
-	if (i == -1) {
-		return 1;
-	} else {
-		deselect();
-		middleline(i);
-		select(i);
-		return 0;
-	}
-}
-
-int
-Fl_Search_Browser::find_prefix(const char *p, int s, int e) {
-	if (s < 0 || e > size() || s > e) {
-		fprintf(stderr, "Invalid search range %d %d\n", s, e);
-		return 1;
-	} else if (e - s <= 1) {
-		if (strncasecmp(p, text(s), strlen(p)) == 0) {
-			return s;
-		} else if (strncasecmp(p, text(e), strlen(p)) == 0){
-			return e;
-		} else {
-			return -1;
-		}
-	} else {
-		int med = s + (e - s) / 2;
-		if (strncasecmp(p, text(med), strlen(p)) > 0) {
-			return find_prefix(p, med, e);
-		} else {
-			return find_prefix(p, s, med);
-		}
-	}
-} 
-
-void
-Fl_Search_Chooser::input_cb(Fl_Input* in, void*c) {
-	Fl_Search_Browser *sb = ((Fl_Search_Chooser *) c)->sb;
-	sb->find_prefix(in->value()); 
-}    
-
-void
-Fl_Search_Chooser::ok_cb(Fl_Input* in, void*c) {
-	Fl_Search_Chooser *sc = (Fl_Search_Chooser *) c;
-	sc->close();
-} 
-
-void
-Fl_Search_Chooser::cancel_cb(Fl_Input* in, void*c) {
-	Fl_Search_Chooser *sc = (Fl_Search_Chooser *) c;
-	sc->sb->deselect();
-	sc->close();
-}
-
-class Fl_Search_Input : public Fl_Input {
-	public:
-		Fl_Search_Input(int x, int y, int w, int h, const char *title) :
-			Fl_Input(x, y, w, h, title) {}
-		int handle(int event) {
-			if (event == FL_KEYBOARD &&
-			    (Fl::event_key() == FL_Up || Fl::event_key() == FL_Down)) {
-				return 0;
-			} else {
-				return Fl_Input::handle(event);
-			}
-	}
-};
-
-Fl_Search_Chooser::Fl_Search_Chooser(const char *title) : Fl_Window(320, 320, title?title:"Choose") {
-	callback((Fl_Callback*) cancel_cb, this);
-	visible_focus = Fl::visible_focus();
-	Fl::visible_focus(0);
-	Fl_Group *g = new Fl_Group(10, 10, w() - 10, h() - 10);
-	sb = new Fl_Search_Browser(g->x(), g->y(), g->w() , g->h() - 100, NULL);
-	sb->type(FL_HOLD_BROWSER);
-	Fl_Input *in = new Fl_Search_Input(g->x()+50, g->h()-80, g->w()-80, 20, "Search");
-	in->callback((Fl_Callback*) input_cb, this);
-	in->when(FL_WHEN_CHANGED);
-	Fl_Button *cancel_b = new Fl_Button(g->w()-200, g->h()-30, 80, 25, "Cancel");
-	cancel_b->callback((Fl_Callback*) cancel_cb, this);
-	Fl_Button *ok_b = new Fl_Button(g->w()-100, g->h()-30, 80, 25, "Ok");
-	ok_b->callback((Fl_Callback*) ok_cb, this);
-	Fl::focus(in);
-	g->end();
-	end();
-}
-
-void
-Fl_Search_Chooser::close() {
-	hide();
-	Fl::visible_focus(visible_focus);
-}
-
-void
-Fl_Search_Chooser::add(const char *t, void *d) {
-	sb->add(t, d);
-}
-
-void *
-Fl_Search_Chooser::data() {
-	int v = sb->value();
-	if (v) {
-		return sb->data(v);
-	} else {
-		return NULL;
-	}
-}
-
-int
-Fl_Search_Chooser::handle(int event) {
-	switch(event) {
-		case FL_KEYBOARD:
-			int key = Fl::event_key();
-
-			if (key == FL_Up || key == FL_Down) {
-				return sb->handle(event);
-			} else if (key == FL_Enter) {
-				close();
-			}
-	}
-
-	return Fl_Window::handle(event);
-}