--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mupdf-source/platform/x11/pdfapp.h	Mon Sep 15 11:44:09 2025 +0200
@@ -0,0 +1,212 @@
+// Copyright (C) 2004-2025 Artifex Software, Inc.
+//
+// This file is part of MuPDF.
+//
+// MuPDF is free software: you can redistribute it and/or modify it under the
+// terms of the GNU Affero General Public License as published by the Free
+// Software Foundation, either version 3 of the License, or (at your option)
+// any later version.
+//
+// MuPDF 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 Affero General Public License for more
+// details.
+//
+// You should have received a copy of the GNU Affero General Public License
+// along with MuPDF. If not, see <https://www.gnu.org/licenses/agpl-3.0.en.html>
+//
+// Alternative licensing terms are available from the licensor.
+// For commercial licensing, see <https://www.artifex.com/> or contact
+// Artifex Software, Inc., 39 Mesa Street, Suite 108A, San Francisco,
+// CA 94129, USA, for further information.
+
+#ifndef PDFAPP_H
+#define PDFAPP_H
+
+#include "mupdf/fitz.h"
+#include "mupdf/pdf.h"
+
+#include <time.h>
+
+/*
+ * Utility object for handling a pdf application / view
+ * Takes care of PDF loading and displaying and navigation,
+ * uses a number of callbacks to the GUI app.
+ */
+
+/* 25% .. 1600% */
+#define MINRES 18
+#define MAXRES 1152
+
+typedef struct pdfapp_s pdfapp_t;
+
+enum { ARROW, HAND, WAIT, CARET };
+
+enum { DISCARD, SAVE, CANCEL };
+
+enum { QUERY_NO, QUERY_YES };
+
+extern void winwarn(pdfapp_t*, char *s);
+extern void winerror(pdfapp_t*, char *s);
+extern void wintitle(pdfapp_t*, char *title);
+extern int winisresolutionacceptable(pdfapp_t*, fz_matrix ctm);
+extern void winresize(pdfapp_t*, int w, int h);
+extern void winrepaint(pdfapp_t*);
+extern void winrepaintsearch(pdfapp_t*);
+extern char *winpassword(pdfapp_t*, char *filename);
+extern char *wintextinput(pdfapp_t*, char *inittext, int retry);
+extern int winchoiceinput(pdfapp_t*, int nopts, const char *opts[], int *nvals, const char *vals[]);
+extern void winopenuri(pdfapp_t*, char *s);
+extern void wincursor(pdfapp_t*, int curs);
+extern void windocopy(pdfapp_t*);
+extern void windrawstring(pdfapp_t*, int x, int y, char *s);
+extern void winclose(pdfapp_t*);
+extern void winhelp(pdfapp_t*);
+extern void winfullscreen(pdfapp_t*, int state);
+extern int winsavequery(pdfapp_t*);
+extern int winquery(pdfapp_t*, const char*);
+extern int wingetcertpath(pdfapp_t *, char *buf, int len);
+extern int wingetsavepath(pdfapp_t*, char *buf, int len);
+extern void winalert(pdfapp_t *, pdf_alert_event *alert);
+extern void winprint(pdfapp_t *);
+extern void winadvancetimer(pdfapp_t *, float duration);
+extern void winreplacefile(pdfapp_t *, char *source, char *target);
+extern void wincopyfile(pdfapp_t *, char *source, char *target);
+extern void winreloadpage(pdfapp_t *);
+
+struct pdfapp_s
+{
+	/* current document params */
+	fz_document *doc;
+	char *docpath;
+	char *doctitle;
+	fz_outline *outline;
+	int outline_deferred;
+
+	float layout_w;
+	float layout_h;
+	float layout_em;
+	char *layout_css;
+	int layout_use_doc_css;
+
+	int pagecount;
+
+	/* current view params */
+	float default_resolution;
+	float resolution;
+	int rotate;
+	fz_pixmap *image;
+	int imgw, imgh;
+	int grayscale;
+	fz_colorspace *colorspace;
+	int invert;
+	int tint, tint_white;
+	int useicc;
+	int useseparations;
+	int aalevel;
+
+	/* presentation mode */
+	int presentation_mode;
+	int presentation_time_in_seconds;
+	int transitions_enabled;
+	fz_pixmap *old_image;
+	fz_pixmap *new_image;
+	clock_t start_time;
+	int in_transit;
+	float duration;
+	fz_transition transition;
+
+	/* current page params */
+	int pageno;
+	fz_page *page;
+	fz_rect page_bbox;
+	fz_display_list *page_list;
+	fz_display_list *annotations_list;
+	fz_stext_page *page_text;
+	fz_link *page_links;
+	int errored;
+	int incomplete;
+
+	/* separations */
+	fz_separations *seps;
+
+	/* snapback history */
+	int hist[256];
+	int histlen;
+	int marks[10];
+
+	/* window system sizes */
+	int winw, winh;
+	int scrw, scrh;
+	int shrinkwrap;
+	int fullscreen;
+
+	/* event handling state */
+	char number[256];
+	int numberlen;
+
+	int ispanning;
+	int panx, pany;
+
+	int iscopying;
+	int selx, sely;
+	/* TODO - While sely keeps track of the relative change in
+	 * cursor position between two ticks/events, beyondy shall keep
+	 * track of the relative change in cursor position from the
+	 * point where the user hits a scrolling limit. This is ugly.
+	 * Used in pdfapp.c:pdfapp_onmouse.
+	 */
+	int beyondy;
+	fz_rect selr;
+
+	int nowaitcursor;
+
+	/* search state */
+	int issearching;
+	int searchdir;
+	char search[512];
+	int searchpage;
+	fz_quad hit_bbox[512];
+	int hit_count;
+
+	/* client context storage */
+	void *userdata;
+
+	fz_context *ctx;
+#ifdef HAVE_CURL
+	fz_stream *stream;
+#endif
+};
+
+void pdfapp_init(fz_context *ctx, pdfapp_t *app);
+void pdfapp_setresolution(pdfapp_t *app, int res);
+void pdfapp_open(pdfapp_t *app, char *filename, int reload);
+void pdfapp_open_progressive(pdfapp_t *app, char *filename, int reload, int kbps);
+void pdfapp_close(pdfapp_t *app);
+int pdfapp_preclose(pdfapp_t *app);
+void pdfapp_reloadfile(pdfapp_t *app);
+
+char *pdfapp_version(pdfapp_t *app);
+char *pdfapp_usage(pdfapp_t *app);
+
+void pdfapp_onkey(pdfapp_t *app, int c, int modifiers);
+void pdfapp_onmouse(pdfapp_t *app, int x, int y, int btn, int modifiers, int state);
+void pdfapp_oncopy(pdfapp_t *app, unsigned short *ucsbuf, int ucslen);
+void pdfapp_onresize(pdfapp_t *app, int w, int h);
+void pdfapp_gotopage(pdfapp_t *app, int number);
+void pdfapp_reloadpage(pdfapp_t *app);
+void pdfapp_autozoom_horizontal(pdfapp_t *app);
+void pdfapp_autozoom_vertical(pdfapp_t *app);
+void pdfapp_autozoom(pdfapp_t *app);
+
+void pdfapp_invert(pdfapp_t *app, fz_rect rect);
+void pdfapp_inverthit(pdfapp_t *app);
+
+void pdfapp_postblit(pdfapp_t *app);
+
+void pdfapp_warn(pdfapp_t *app, const char *fmt, ...);
+void pdfapp_error(pdfapp_t *app, char *msg);
+
+void pdfapp_load_profile(pdfapp_t *app, char *profile_name);
+
+#endif