forked from KolibriOS/kolibrios
1172 lines
22 KiB
C
1172 lines
22 KiB
C
#include "fitz.h"
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#include "mupdf.h"
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#include "pdfapp.h"
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#include <ctype.h> /* for tolower() */
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#define ZOOMSTEP 1.142857
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#define BEYOND_THRESHHOLD 40
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enum panning
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{
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DONT_PAN = 0,
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PAN_TO_TOP,
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PAN_TO_BOTTOM
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};
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static void pdfapp_showpage(pdfapp_t *app, int loadpage, int drawpage, int repaint);
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static void pdfapp_warn(pdfapp_t *app, const char *fmt, ...)
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{
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char buf[1024];
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va_list ap;
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va_start(ap, fmt);
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vsprintf(buf, fmt, ap);
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va_end(ap);
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winwarn(app, buf);
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}
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static void pdfapp_error(pdfapp_t *app, fz_error error)
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{
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winerror(app, error);
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}
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char *pdfapp_version(pdfapp_t *app)
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{
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return
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"MuPDF 0.9\n"
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"Copyright 2006-2011 Artifex Sofware, Inc.\n";
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}
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char *pdfapp_usage(pdfapp_t *app)
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{
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return " ";
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/*
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"L\t\t-- rotate left\n"
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"R\t\t-- rotate right\n"
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"h\t\t-- scroll left\n"
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"j down\t\t-- scroll down\n"
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"k up\t\t-- scroll up\n"
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"l\t\t-- scroll right\n"
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"+\t\t-- zoom in\n"
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"-\t\t-- zoom out\n"
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"w\t\t-- shrinkwrap\n"
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"r\t\t-- reload file\n"
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". pgdn right space\t-- next page\n"
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", pgup left b\t-- previous page\n"
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">\t\t-- next 10 pages\n"
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"<\t\t-- back 10 pages\n"
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"m\t\t-- mark page for snap back\n"
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"t\t\t-- pop back to latest mark\n"
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"1m\t\t-- mark page in register 1\n"
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"1t\t\t-- go to page in register 1\n"
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"123g\t\t-- go to page 123\n"
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"/\t\t-- search for text\n"
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"n\t\t-- find next search result\n"
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"N\t\t-- find previous search result\n"
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"c\t\t-- toggle between color and grayscale\n"
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;
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*/
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}
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void pdfapp_init(pdfapp_t *app)
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{
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memset(app, 0, sizeof(pdfapp_t));
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app->scrw = 640;
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app->scrh = 480;
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app->resolution = 72;
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}
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void pdfapp_invert(pdfapp_t *app, fz_bbox rect)
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{
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unsigned char *p;
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int x, y, n;
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int x0 = CLAMP(rect.x0 - app->image->x, 0, app->image->w - 1);
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int x1 = CLAMP(rect.x1 - app->image->x, 0, app->image->w - 1);
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int y0 = CLAMP(rect.y0 - app->image->y, 0, app->image->h - 1);
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int y1 = CLAMP(rect.y1 - app->image->y, 0, app->image->h - 1);
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for (y = y0; y < y1; y++)
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{
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p = app->image->samples + (y * app->image->w + x0) * app->image->n;
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for (x = x0; x < x1; x++)
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{
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for (n = app->image->n; n > 0; n--, p++)
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*p = 255 - *p;
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}
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}
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}
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static void pdfapp_open_pdf(pdfapp_t *app, char *filename, int fd)
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{
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fz_error error;
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fz_stream *file;
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char *password = "";
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fz_obj *obj;
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fz_obj *info;
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/*
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* Open PDF and load xref table
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*/
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__menuet__debug_out("FZ OPEN\n");
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//file = fz_open_fd(fd);
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__menuet__debug_out("FZ ready\n");
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error = pdf_open_xref(&app->xref, filename, NULL);
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if (error){
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__menuet__debug_out("FZ can't open\n");
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pdfapp_error(app, fz_rethrow(error, "cannot open document '%s'", filename));}
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fz_close(file);
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/*
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* Handle encrypted PDF files
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*/
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/*
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if (pdf_needs_password(app->xref))
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{
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int okay = pdf_authenticate_password(app->xref, password);
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while (!okay)
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{
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password = winpassword(app, filename);
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if (!password)
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exit(1);
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okay = pdf_authenticate_password(app->xref, password);
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if (!okay)
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pdfapp_warn(app, "Invalid password.");
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}
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}
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* */
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/*
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* Load meta information
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*/
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/*
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app->outline = pdf_load_outline(app->xref);
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app->doctitle = filename;
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if (strrchr(app->doctitle, '\\'))
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app->doctitle = strrchr(app->doctitle, '\\') + 1;
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if (strrchr(app->doctitle, '/'))
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app->doctitle = strrchr(app->doctitle, '/') + 1;
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info = fz_dict_gets(app->xref->trailer, "Info");
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if (info)
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{
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obj = fz_dict_gets(info, "Title");
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if (obj)
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app->doctitle = pdf_to_utf8(obj);
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} */
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/*
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* Start at first page
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*/
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__menuet__debug_out("Start at first page\n");
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error = pdf_load_page_tree(app->xref);
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if (error) {
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__menuet__debug_out("Can't load tree\n");
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pdfapp_error(app, fz_rethrow(error, "cannot load page tree"));}
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__menuet__debug_out("Page counter\n");
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app->pagecount = pdf_count_pages(app->xref);
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__menuet__debug_out("All is set!\n");
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}
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void pdfapp_open(pdfapp_t *app, char *filename, int fd, int reload)
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{
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pdfapp_open_pdf(app, filename, fd);
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app->cache = fz_new_glyph_cache();
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if (app->pageno < 1)
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app->pageno = 1;
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if (app->pageno > app->pagecount)
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app->pageno = app->pagecount;
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if (app->resolution < MINRES)
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app->resolution = MINRES;
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if (app->resolution > MAXRES)
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app->resolution = MAXRES;
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if (!reload)
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{
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app->shrinkwrap = 1;
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app->rotate = 0;
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app->panx = 0;
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app->pany = 0;
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}
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pdfapp_showpage(app, 1, 1, 1);
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}
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void pdfapp_close(pdfapp_t *app)
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{
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if (app->cache)
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fz_free_glyph_cache(app->cache);
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app->cache = NULL;
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if (app->image)
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fz_drop_pixmap(app->image);
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app->image = NULL;
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if (app->outline)
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pdf_free_outline(app->outline);
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app->outline = NULL;
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if (app->xref)
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{
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if (app->xref->store)
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pdf_free_store(app->xref->store);
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app->xref->store = NULL;
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pdf_free_xref(app->xref);
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app->xref = NULL;
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}
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fz_flush_warnings();
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}
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static fz_matrix pdfapp_viewctm(pdfapp_t *app)
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{
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fz_matrix ctm;
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ctm = fz_identity;
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ctm = fz_concat(ctm, fz_translate(0, -app->page_bbox.y1));
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if (app->xref)
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ctm = fz_concat(ctm, fz_scale(app->resolution/72.0f, -app->resolution/72.0f));
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else
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ctm = fz_concat(ctm, fz_scale(app->resolution/96.0f, app->resolution/96.0f));
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ctm = fz_concat(ctm, fz_rotate(app->rotate + app->page_rotate));
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return ctm;
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}
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static void pdfapp_panview(pdfapp_t *app, int newx, int newy)
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{
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if (newx < 0)
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newx = 0;
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if (newy < 0)
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newy = 0;
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if (newx + app->image->w < app->winw)
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newx = app->winw - app->image->w;
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if (newy + app->image->h < app->winh)
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newy = app->winh - app->image->h;
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if (app->winw >= app->image->w)
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newx = (app->winw - app->image->w) / 2;
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if (app->winh >= app->image->h)
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newy = (app->winh - app->image->h) / 2;
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if (newx != app->panx || newy != app->pany)
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winrepaint(app);
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if (newy > app->image->h) {
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app->pageno++;
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if (app->pageno > app->pagecount)
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app->pageno = app->pagecount;
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newy = 0;
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app->pany = newy;
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pdfapp_showpage(app, 1, 1, 1);
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}
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app->panx = newx;
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app->pany = newy;
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}
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static void pdfapp_loadpage_pdf(pdfapp_t *app)
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{
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pdf_page *page;
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fz_error error;
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fz_device *mdev;
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error = pdf_load_page(&page, app->xref, app->pageno - 1);
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if (error)
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pdfapp_error(app, error);
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app->page_bbox = page->mediabox;
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app->page_rotate = page->rotate;
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app->page_links = page->links;
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page->links = NULL;
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/* Create display list */
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app->page_list = fz_new_display_list();
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mdev = fz_new_list_device(app->page_list);
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error = pdf_run_page(app->xref, page, mdev, fz_identity);
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if (error)
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{
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error = fz_rethrow(error, "cannot draw page %d in '%s'", app->pageno, app->doctitle);
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pdfapp_error(app, error);
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}
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fz_free_device(mdev);
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pdf_free_page(page);
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pdf_age_store(app->xref->store, 3);
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}
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static void pdfapp_showpage(pdfapp_t *app, int loadpage, int drawpage, int repaint)
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{
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char buf[256];
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fz_device *idev;
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fz_device *tdev;
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fz_colorspace *colorspace;
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fz_matrix ctm;
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fz_bbox bbox;
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wincursor(app, WAIT);
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if (loadpage)
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{
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if (app->page_list)
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fz_free_display_list(app->page_list);
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if (app->page_text)
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fz_free_text_span(app->page_text);
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if (app->page_links)
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pdf_free_link(app->page_links);
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if (app->xref)
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pdfapp_loadpage_pdf(app);
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/* Zero search hit position */
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app->hit = -1;
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app->hitlen = 0;
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/* Extract text */
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app->page_text = fz_new_text_span();
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tdev = fz_new_text_device(app->page_text);
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fz_execute_display_list(app->page_list, tdev, fz_identity, fz_infinite_bbox);
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fz_free_device(tdev);
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}
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if (drawpage)
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{
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sprintf(buf, "%s - %d/%d (%d dpi)", app->doctitle,
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app->pageno, app->pagecount, app->resolution);
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wintitle(app, buf);
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ctm = pdfapp_viewctm(app);
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bbox = fz_round_rect(fz_transform_rect(ctm, app->page_bbox));
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/* Draw */
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if (app->image)
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fz_drop_pixmap(app->image);
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if (app->grayscale)
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colorspace = fz_device_gray;
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else
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//#ifdef _WIN32
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colorspace = fz_device_bgr;
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//#else
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// colorspace = fz_device_rgb;
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//#endif
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app->image = fz_new_pixmap_with_rect(colorspace, bbox);
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fz_clear_pixmap_with_color(app->image, 255);
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idev = fz_new_draw_device(app->cache, app->image);
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fz_execute_display_list(app->page_list, idev, ctm, bbox);
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fz_free_device(idev);
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}
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if (repaint)
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{
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pdfapp_panview(app, app->panx, app->pany);
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if (app->shrinkwrap)
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{
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__menuet__debug_out ("SHRINK\n");
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int w = app->image->w;
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int h = app->image->h;
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if (app->winw == w)
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app->panx = 0;
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if (app->winh == h)
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app->pany = 0;
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if (w > app->scrw * 90 / 100)
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w = app->scrw * 90 / 100;
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if (h > app->scrh * 90 / 100)
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h = app->scrh * 90 / 100;
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if (w != app->winw || h != app->winh)
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winresize(app, w, h);
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}
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winrepaint(app);
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wincursor(app, ARROW);
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}
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fz_flush_warnings();
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}
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static void pdfapp_gotouri(pdfapp_t *app, fz_obj *uri)
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{
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char *buf;
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buf = fz_malloc(fz_to_str_len(uri) + 1);
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memcpy(buf, fz_to_str_buf(uri), fz_to_str_len(uri));
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buf[fz_to_str_len(uri)] = 0;
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winopenuri(app, buf);
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fz_free(buf);
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}
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static void pdfapp_gotopage(pdfapp_t *app, fz_obj *obj)
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{
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int number;
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number = pdf_find_page_number(app->xref, obj);
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if (number < 0)
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return;
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if (app->histlen + 1 == 256)
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{
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memmove(app->hist, app->hist + 1, sizeof(int) * 255);
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app->histlen --;
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}
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app->hist[app->histlen++] = app->pageno;
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app->pageno = number + 1;
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pdfapp_showpage(app, 1, 1, 1);
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}
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static inline fz_bbox bboxcharat(fz_text_span *span, int idx)
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{
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int ofs = 0;
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while (span)
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{
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if (idx < ofs + span->len)
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return span->text[idx - ofs].bbox;
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if (span->eol)
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{
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if (idx == ofs + span->len)
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return fz_empty_bbox;
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ofs ++;
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}
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ofs += span->len;
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span = span->next;
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}
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return fz_empty_bbox;
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}
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void pdfapp_inverthit(pdfapp_t *app)
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{
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fz_bbox hitbox, bbox;
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fz_matrix ctm;
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int i;
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if (app->hit < 0)
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return;
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hitbox = fz_empty_bbox;
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ctm = pdfapp_viewctm(app);
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for (i = app->hit; i < app->hit + app->hitlen; i++)
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{
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bbox = bboxcharat(app->page_text, i);
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if (fz_is_empty_rect(bbox))
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{
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if (!fz_is_empty_rect(hitbox))
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pdfapp_invert(app, fz_transform_bbox(ctm, hitbox));
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hitbox = fz_empty_bbox;
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}
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else
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{
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hitbox = fz_union_bbox(hitbox, bbox);
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}
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}
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if (!fz_is_empty_rect(hitbox))
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pdfapp_invert(app, fz_transform_bbox(ctm, hitbox));
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}
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static inline int charat(fz_text_span *span, int idx)
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{
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int ofs = 0;
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while (span)
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{
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if (idx < ofs + span->len)
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return span->text[idx - ofs].c;
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if (span->eol)
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{
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if (idx == ofs + span->len)
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return ' ';
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ofs ++;
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}
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ofs += span->len;
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span = span->next;
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}
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return 0;
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}
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static int textlen(fz_text_span *span)
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{
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int len = 0;
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while (span)
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{
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len += span->len;
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if (span->eol)
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len ++;
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span = span->next;
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}
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return len;
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}
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static int match(char *s, fz_text_span *span, int n)
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{
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int orig = n;
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int c;
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while ((c = *s++))
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{
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if (c == ' ' && charat(span, n) == ' ')
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{
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while (charat(span, n) == ' ')
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n++;
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}
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else
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{
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if (tolower(c) != tolower(charat(span, n)))
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return 0;
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n++;
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}
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}
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return n - orig;
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}
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static void pdfapp_searchforward(pdfapp_t *app, enum panning *panto)
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{
|
|
int matchlen;
|
|
int test;
|
|
int len;
|
|
int startpage;
|
|
|
|
wincursor(app, WAIT);
|
|
|
|
startpage = app->pageno;
|
|
|
|
do
|
|
{
|
|
len = textlen(app->page_text);
|
|
|
|
if (app->hit >= 0)
|
|
test = app->hit + strlen(app->search);
|
|
else
|
|
test = 0;
|
|
|
|
while (test < len)
|
|
{
|
|
matchlen = match(app->search, app->page_text, test);
|
|
if (matchlen)
|
|
{
|
|
app->hit = test;
|
|
app->hitlen = matchlen;
|
|
wincursor(app, HAND);
|
|
winrepaint(app);
|
|
return;
|
|
}
|
|
test++;
|
|
}
|
|
|
|
app->pageno++;
|
|
if (app->pageno > app->pagecount)
|
|
app->pageno = 1;
|
|
|
|
pdfapp_showpage(app, 1, 0, 0);
|
|
*panto = PAN_TO_TOP;
|
|
|
|
} while (app->pageno != startpage);
|
|
|
|
if (app->pageno == startpage)
|
|
{
|
|
pdfapp_warn(app, "String '%s' not found.", app->search);
|
|
winrepaintsearch(app);
|
|
}
|
|
else
|
|
winrepaint(app);
|
|
|
|
wincursor(app, HAND);
|
|
}
|
|
|
|
static void pdfapp_searchbackward(pdfapp_t *app, enum panning *panto)
|
|
{
|
|
int matchlen;
|
|
int test;
|
|
int len;
|
|
int startpage;
|
|
|
|
wincursor(app, WAIT);
|
|
|
|
startpage = app->pageno;
|
|
|
|
do
|
|
{
|
|
len = textlen(app->page_text);
|
|
|
|
if (app->hit >= 0)
|
|
test = app->hit - 1;
|
|
else
|
|
test = len;
|
|
|
|
while (test >= 0)
|
|
{
|
|
matchlen = match(app->search, app->page_text, test);
|
|
if (matchlen)
|
|
{
|
|
app->hit = test;
|
|
app->hitlen = matchlen;
|
|
wincursor(app, HAND);
|
|
winrepaint(app);
|
|
return;
|
|
}
|
|
test--;
|
|
}
|
|
|
|
app->pageno--;
|
|
if (app->pageno < 1)
|
|
app->pageno = app->pagecount;
|
|
|
|
pdfapp_showpage(app, 1, 0, 0);
|
|
*panto = PAN_TO_BOTTOM;
|
|
|
|
} while (app->pageno != startpage);
|
|
|
|
if (app->pageno == startpage)
|
|
{
|
|
pdfapp_warn(app, "String '%s' not found.", app->search);
|
|
winrepaintsearch(app);
|
|
}
|
|
else
|
|
winrepaint(app);
|
|
|
|
wincursor(app, HAND);
|
|
}
|
|
|
|
void pdfapp_onresize(pdfapp_t *app, int w, int h)
|
|
{
|
|
if (app->winw != w || app->winh != h)
|
|
{
|
|
app->winw = w;
|
|
app->winh = h;
|
|
pdfapp_panview(app, app->panx, app->pany);
|
|
winrepaint(app);
|
|
}
|
|
}
|
|
|
|
void pdfapp_onkey(pdfapp_t *app, int c)
|
|
{
|
|
int oldpage = app->pageno;
|
|
enum panning panto = PAN_TO_TOP;
|
|
int loadpage = 1;
|
|
|
|
if (app->isediting)
|
|
{
|
|
int n = strlen(app->search);
|
|
if (c < ' ')
|
|
{
|
|
if (c == '\b' && n > 0)
|
|
{
|
|
app->search[n - 1] = 0;
|
|
winrepaintsearch(app);
|
|
}
|
|
if (c == '\n' || c == '\r')
|
|
{
|
|
app->isediting = 0;
|
|
if (n > 0)
|
|
{
|
|
winrepaintsearch(app);
|
|
pdfapp_onkey(app, 'n');
|
|
}
|
|
else
|
|
winrepaint(app);
|
|
}
|
|
if (c == '\033')
|
|
{
|
|
app->isediting = 0;
|
|
winrepaint(app);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if (n + 2 < sizeof app->search)
|
|
{
|
|
app->search[n] = c;
|
|
app->search[n + 1] = 0;
|
|
winrepaintsearch(app);
|
|
}
|
|
}
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* Save numbers typed for later
|
|
*/
|
|
|
|
if (c >= '0' && c <= '9')
|
|
{
|
|
app->number[app->numberlen++] = c;
|
|
app->number[app->numberlen] = '\0';
|
|
}
|
|
|
|
switch (c)
|
|
{
|
|
|
|
case '?':
|
|
winhelp(app);
|
|
break;
|
|
|
|
case 'q':
|
|
winclose(app);
|
|
break;
|
|
|
|
/*
|
|
* Zoom and rotate
|
|
*/
|
|
|
|
case '+':
|
|
case '=':
|
|
app->resolution *= ZOOMSTEP;
|
|
if (app->resolution > MAXRES)
|
|
app->resolution = MAXRES;
|
|
pdfapp_showpage(app, 0, 1, 1);
|
|
break;
|
|
case '-':
|
|
app->resolution /= ZOOMSTEP;
|
|
if (app->resolution < MINRES)
|
|
app->resolution = MINRES;
|
|
pdfapp_showpage(app, 0, 1, 1);
|
|
break;
|
|
|
|
case 'L':
|
|
app->rotate -= 90;
|
|
pdfapp_showpage(app, 0, 1, 1);
|
|
break;
|
|
case 'R':
|
|
app->rotate += 90;
|
|
pdfapp_showpage(app, 0, 1, 1);
|
|
break;
|
|
|
|
case 'c':
|
|
app->grayscale ^= 1;
|
|
pdfapp_showpage(app, 0, 1, 1);
|
|
break;
|
|
|
|
#ifndef NDEBUG
|
|
case 'a':
|
|
app->rotate -= 15;
|
|
pdfapp_showpage(app, 0, 1, 1);
|
|
break;
|
|
case 's':
|
|
app->rotate += 15;
|
|
pdfapp_showpage(app, 0, 1, 1);
|
|
break;
|
|
#endif
|
|
|
|
/*
|
|
* Pan view, but dont need to repaint image
|
|
*/
|
|
|
|
case 'w':
|
|
app->shrinkwrap = 1;
|
|
app->panx = app->pany = 0;
|
|
pdfapp_showpage(app, 0, 0, 1);
|
|
break;
|
|
|
|
case 'h':
|
|
app->panx += app->image->w / 10;
|
|
pdfapp_showpage(app, 0, 0, 1);
|
|
break;
|
|
|
|
case 'j':
|
|
app->pany -= app->image->h / 10;
|
|
pdfapp_showpage(app, 0, 0, 1);
|
|
break;
|
|
|
|
case 'k':
|
|
app->pany += app->image->h / 10;
|
|
pdfapp_showpage(app, 0, 0, 1);
|
|
break;
|
|
|
|
case 'l':
|
|
app->panx -= app->image->w / 10;
|
|
pdfapp_showpage(app, 0, 0, 1);
|
|
break;
|
|
|
|
/*
|
|
* Page navigation
|
|
*/
|
|
|
|
case 'g':
|
|
case '\n':
|
|
case '\r':
|
|
if (app->numberlen > 0)
|
|
app->pageno = atoi(app->number);
|
|
else
|
|
app->pageno = 1;
|
|
break;
|
|
|
|
case 'G':
|
|
app->pageno = app->pagecount;
|
|
break;
|
|
|
|
case 'm':
|
|
if (app->numberlen > 0)
|
|
{
|
|
int idx = atoi(app->number);
|
|
|
|
if (idx >= 0 && idx < nelem(app->marks))
|
|
app->marks[idx] = app->pageno;
|
|
}
|
|
else
|
|
{
|
|
if (app->histlen + 1 == 256)
|
|
{
|
|
memmove(app->hist, app->hist + 1, sizeof(int) * 255);
|
|
app->histlen --;
|
|
}
|
|
app->hist[app->histlen++] = app->pageno;
|
|
}
|
|
break;
|
|
|
|
case 't':
|
|
if (app->numberlen > 0)
|
|
{
|
|
int idx = atoi(app->number);
|
|
|
|
if (idx >= 0 && idx < nelem(app->marks))
|
|
if (app->marks[idx] > 0)
|
|
app->pageno = app->marks[idx];
|
|
}
|
|
else if (app->histlen > 0)
|
|
app->pageno = app->hist[--app->histlen];
|
|
break;
|
|
|
|
/*
|
|
* Back and forth ...
|
|
*/
|
|
|
|
case ',':
|
|
panto = PAN_TO_BOTTOM;
|
|
if (app->numberlen > 0)
|
|
app->pageno -= atoi(app->number);
|
|
else
|
|
app->pageno--;
|
|
break;
|
|
|
|
case '.':
|
|
panto = PAN_TO_TOP;
|
|
if (app->numberlen > 0)
|
|
app->pageno += atoi(app->number);
|
|
else
|
|
app->pageno++;
|
|
break;
|
|
|
|
case 'b':
|
|
panto = DONT_PAN;
|
|
if (app->numberlen > 0)
|
|
app->pageno -= atoi(app->number);
|
|
else
|
|
app->pageno--;
|
|
break;
|
|
|
|
case ' ':
|
|
panto = DONT_PAN;
|
|
if (app->numberlen > 0)
|
|
app->pageno += atoi(app->number);
|
|
else
|
|
app->pageno++;
|
|
break;
|
|
|
|
case ']':
|
|
panto = PAN_TO_TOP;
|
|
app->pageno++;
|
|
break;
|
|
|
|
case '[':
|
|
panto = PAN_TO_TOP;
|
|
app->pageno--;
|
|
break;
|
|
|
|
|
|
case '<':
|
|
panto = PAN_TO_TOP;
|
|
app->pageno -= 10;
|
|
break;
|
|
case '>':
|
|
panto = PAN_TO_TOP;
|
|
app->pageno += 10;
|
|
break;
|
|
|
|
/*
|
|
* Reloading the file...
|
|
*/
|
|
|
|
case 'r':
|
|
panto = DONT_PAN;
|
|
oldpage = -1;
|
|
winreloadfile(app);
|
|
break;
|
|
|
|
/*
|
|
* Searching
|
|
*/
|
|
|
|
case '/':
|
|
app->isediting = 1;
|
|
app->search[0] = 0;
|
|
app->hit = -1;
|
|
app->hitlen = 0;
|
|
winrepaintsearch(app);
|
|
break;
|
|
|
|
case 'n':
|
|
pdfapp_searchforward(app, &panto);
|
|
loadpage = 0;
|
|
break;
|
|
|
|
case 'N':
|
|
pdfapp_searchbackward(app, &panto);
|
|
loadpage = 0;
|
|
break;
|
|
|
|
}
|
|
|
|
if (c < '0' || c > '9')
|
|
app->numberlen = 0;
|
|
|
|
if (app->pageno < 1)
|
|
app->pageno = 1;
|
|
if (app->pageno > app->pagecount)
|
|
app->pageno = app->pagecount;
|
|
|
|
if (app->pageno != oldpage)
|
|
{
|
|
switch (panto)
|
|
{
|
|
case PAN_TO_TOP:
|
|
app->pany = 0;
|
|
break;
|
|
case PAN_TO_BOTTOM:
|
|
app->pany = -2000;
|
|
break;
|
|
case DONT_PAN:
|
|
break;
|
|
}
|
|
pdfapp_showpage(app, loadpage, 1, 1);
|
|
}
|
|
}
|
|
|
|
void pdfapp_onmouse(pdfapp_t *app, int x, int y, int btn, int modifiers, int state)
|
|
{
|
|
pdf_link *link;
|
|
fz_matrix ctm;
|
|
fz_point p;
|
|
|
|
p.x = x - app->panx + app->image->x;
|
|
p.y = y - app->pany + app->image->y;
|
|
|
|
ctm = pdfapp_viewctm(app);
|
|
ctm = fz_invert_matrix(ctm);
|
|
|
|
p = fz_transform_point(ctm, p);
|
|
|
|
for (link = app->page_links; link; link = link->next)
|
|
{
|
|
if (p.x >= link->rect.x0 && p.x <= link->rect.x1)
|
|
if (p.y >= link->rect.y0 && p.y <= link->rect.y1)
|
|
break;
|
|
}
|
|
|
|
if (link)
|
|
{
|
|
wincursor(app, HAND);
|
|
if (btn == 1 && state == 1)
|
|
{
|
|
if (link->kind == PDF_LINK_URI)
|
|
pdfapp_gotouri(app, link->dest);
|
|
else if (link->kind == PDF_LINK_GOTO)
|
|
pdfapp_gotopage(app, fz_array_get(link->dest, 0)); /* [ pageobj ... ] */
|
|
return;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
wincursor(app, ARROW);
|
|
}
|
|
|
|
if (state == 1)
|
|
{
|
|
if (btn == 1 && !app->iscopying)
|
|
{
|
|
app->ispanning = 1;
|
|
app->selx = x;
|
|
app->sely = y;
|
|
app->beyondy = 0;
|
|
}
|
|
if (btn == 3 && !app->ispanning)
|
|
{
|
|
app->iscopying = 1;
|
|
app->selx = x;
|
|
app->sely = y;
|
|
app->selr.x0 = x;
|
|
app->selr.x1 = x;
|
|
app->selr.y0 = y;
|
|
app->selr.y1 = y;
|
|
}
|
|
if (btn == 4 || btn == 5) /* scroll wheel */
|
|
{
|
|
int dir = btn == 4 ? 1 : -1;
|
|
app->ispanning = app->iscopying = 0;
|
|
if (modifiers & (1<<2))
|
|
{
|
|
/* zoom in/out if ctrl is pressed */
|
|
if (dir > 0)
|
|
app->resolution *= ZOOMSTEP;
|
|
else
|
|
app->resolution /= ZOOMSTEP;
|
|
if (app->resolution > MAXRES)
|
|
app->resolution = MAXRES;
|
|
if (app->resolution < MINRES)
|
|
app->resolution = MINRES;
|
|
pdfapp_showpage(app, 0, 1, 1);
|
|
}
|
|
else
|
|
{
|
|
/* scroll up/down, or left/right if
|
|
shift is pressed */
|
|
int isx = (modifiers & (1<<0));
|
|
int xstep = isx ? 20 * dir : 0;
|
|
int ystep = !isx ? 20 * dir : 0;
|
|
pdfapp_panview(app, app->panx + xstep, app->pany + ystep);
|
|
}
|
|
}
|
|
}
|
|
|
|
else if (state == -1)
|
|
{
|
|
if (app->iscopying)
|
|
{
|
|
app->iscopying = 0;
|
|
app->selr.x0 = MIN(app->selx, x) - app->panx + app->image->x;
|
|
app->selr.x1 = MAX(app->selx, x) - app->panx + app->image->x;
|
|
app->selr.y0 = MIN(app->sely, y) - app->pany + app->image->y;
|
|
app->selr.y1 = MAX(app->sely, y) - app->pany + app->image->y;
|
|
winrepaint(app);
|
|
if (app->selr.x0 < app->selr.x1 && app->selr.y0 < app->selr.y1)
|
|
windocopy(app);
|
|
}
|
|
if (app->ispanning)
|
|
app->ispanning = 0;
|
|
}
|
|
|
|
else if (app->ispanning)
|
|
{
|
|
int newx = app->panx + x - app->selx;
|
|
int newy = app->pany + y - app->sely;
|
|
/* Scrolling beyond limits implies flipping pages */
|
|
/* Are we requested to scroll beyond limits? */
|
|
if (newy + app->image->h < app->winh || newy > 0)
|
|
{
|
|
/* Yes. We can assume that deltay != 0 */
|
|
int deltay = y - app->sely;
|
|
/* Check whether the panning has occured in the
|
|
* direction that we are already crossing the
|
|
* limit it. If not, we can conclude that we
|
|
* have switched ends of the page and will thus
|
|
* start over counting.
|
|
*/
|
|
if( app->beyondy == 0 || (app->beyondy ^ deltay) >= 0 )
|
|
{
|
|
/* Updating how far we are beyond and
|
|
* flipping pages if beyond threshhold
|
|
*/
|
|
app->beyondy += deltay;
|
|
if (app->beyondy > BEYOND_THRESHHOLD)
|
|
{
|
|
if( app->pageno > 1 )
|
|
{
|
|
app->pageno--;
|
|
pdfapp_showpage(app, 1, 1, 1);
|
|
newy = -app->image->h;
|
|
}
|
|
app->beyondy = 0;
|
|
}
|
|
else if (app->beyondy < -BEYOND_THRESHHOLD)
|
|
{
|
|
if( app->pageno < app->pagecount )
|
|
{
|
|
app->pageno++;
|
|
pdfapp_showpage(app, 1, 1, 1);
|
|
newy = 0;
|
|
}
|
|
app->beyondy = 0;
|
|
}
|
|
}
|
|
else
|
|
app->beyondy = 0;
|
|
}
|
|
/* Although at this point we've already determined that
|
|
* or that no scrolling will be performed in
|
|
* y-direction, the x-direction has not yet been taken
|
|
* care off. Therefore
|
|
*/
|
|
pdfapp_panview(app, newx, newy);
|
|
|
|
app->selx = x;
|
|
app->sely = y;
|
|
}
|
|
|
|
else if (app->iscopying)
|
|
{
|
|
app->selr.x0 = MIN(app->selx, x) - app->panx + app->image->x;
|
|
app->selr.x1 = MAX(app->selx, x) - app->panx + app->image->x;
|
|
app->selr.y0 = MIN(app->sely, y) - app->pany + app->image->y;
|
|
app->selr.y1 = MAX(app->sely, y) - app->pany + app->image->y;
|
|
winrepaint(app);
|
|
}
|
|
|
|
}
|
|
|
|
void pdfapp_oncopy(pdfapp_t *app, unsigned short *ucsbuf, int ucslen)
|
|
{
|
|
fz_bbox hitbox;
|
|
fz_matrix ctm;
|
|
fz_text_span *span;
|
|
int c, i, p;
|
|
int seen;
|
|
|
|
int x0 = app->selr.x0;
|
|
int x1 = app->selr.x1;
|
|
int y0 = app->selr.y0;
|
|
int y1 = app->selr.y1;
|
|
|
|
ctm = pdfapp_viewctm(app);
|
|
|
|
p = 0;
|
|
for (span = app->page_text; span; span = span->next)
|
|
{
|
|
seen = 0;
|
|
|
|
for (i = 0; i < span->len; i++)
|
|
{
|
|
hitbox = fz_transform_bbox(ctm, span->text[i].bbox);
|
|
c = span->text[i].c;
|
|
if (c < 32)
|
|
c = '?';
|
|
if (hitbox.x1 >= x0 && hitbox.x0 <= x1 && hitbox.y1 >= y0 && hitbox.y0 <= y1)
|
|
{
|
|
if (p < ucslen - 1)
|
|
ucsbuf[p++] = c;
|
|
seen = 1;
|
|
}
|
|
}
|
|
|
|
if (seen && span->eol)
|
|
{
|
|
#ifdef _WIN32
|
|
if (p < ucslen - 1)
|
|
ucsbuf[p++] = '\r';
|
|
#endif
|
|
if (p < ucslen - 1)
|
|
ucsbuf[p++] = '\n';
|
|
}
|
|
}
|
|
|
|
ucsbuf[p] = 0;
|
|
}
|