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435a566751
* sumatrapdf - vendor import * everything compiles (libjpeg, poppler, fitz, sumatrapdf) * does NOT link (remove the comment tags in the parent directory.rbuild file (rosapps dir) to build it) svn path=/trunk/; revision=29295
686 lines
13 KiB
C
686 lines
13 KiB
C
#include <fitz.h>
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#include <mupdf.h>
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#include "pdfapp.h"
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void pdfapp_showpage(pdfapp_t *app, int loadpage, int drawpage);
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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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void pdfapp_error(pdfapp_t *app, fz_error *error)
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{
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winerror(app, error->msg);
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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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" l <\t\t-- rotate left\n"
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" r >\t\t-- rotate right\n"
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" u up\t\t-- scroll up\n"
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" d down\t-- scroll down\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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"\n"
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" n pgdn space\t-- next page\n"
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" b pgup back\t-- previous page\n"
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" right\t\t-- next page\n"
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" left\t\t-- previous page\n"
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" N F\t\t-- next 10\n"
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" B\t\t-- back 10\n"
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" m\t\t-- mark page for snap back\n"
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" t\t\t-- pop back to last mark\n"
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" 123g\t\t-- go to page\n"
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"\n"
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" left drag to pan, right drag to copy text\n";
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}
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void pdfapp_init(pdfapp_t *app)
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{
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fz_error *error;
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memset(app, 0, sizeof(pdfapp_t));
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error = fz_newrenderer(&app->rast, pdf_devicergb, 0, 1024 * 512);
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if (error)
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pdfapp_error(app, error);
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app->scrw = 640;
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app->scrh = 480;
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}
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void pdfapp_open(pdfapp_t *app, char *filename)
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{
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fz_error *error;
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fz_obj *obj;
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char *password = "";
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/*
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* Open PDF and load xref table
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*/
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app->filename = filename;
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error = pdf_newxref(&app->xref);
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if (error)
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pdfapp_error(app, error);
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error = pdf_loadxref(app->xref, filename);
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if (error)
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{
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if (!strncmp(error->msg, "ioerror", 7))
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pdfapp_error(app, error);
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pdfapp_warn(app,
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"There was a problem with file \"%s\".\n"
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"It may be corrupted, or generated by broken software.\n\n"
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"%s\n\nTrying to continue anyway...",
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filename, error->msg);
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error = pdf_repairxref(app->xref, filename);
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if (error)
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pdfapp_error(app, error);
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}
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/*
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* Handle encrypted PDF files
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*/
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error = pdf_decryptxref(app->xref);
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if (error)
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pdfapp_error(app, error);
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if (app->xref->crypt)
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{
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error = pdf_setpassword(app->xref->crypt, password);
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while (error)
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{
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fz_droperror(error);
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password = winpassword(app, filename);
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if (!password)
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exit(1);
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error = pdf_setpassword(app->xref->crypt, password);
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if (error)
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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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* Load page tree
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*/
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error = pdf_loadpagetree(&app->pages, app->xref);
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if (error)
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pdfapp_error(app, error);
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/*
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* Load meta information
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* TODO: move this into mupdf library
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*/
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obj = fz_dictgets(app->xref->trailer, "Root");
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if (!obj)
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pdfapp_error(app, fz_throw("syntaxerror: missing Root object"));
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error = pdf_loadindirect(&app->xref->root, app->xref, obj);
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if (error)
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pdfapp_error(app, error);
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obj = fz_dictgets(app->xref->trailer, "Info");
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if (obj)
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{
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error = pdf_loadindirect(&app->xref->info, app->xref, obj);
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if (error)
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pdfapp_error(app, error);
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}
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error = pdf_loadnametrees(app->xref);
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if (error)
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pdfapp_error(app, error);
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error = pdf_loadoutline(&app->outline, app->xref);
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if (error)
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pdfapp_error(app, error);
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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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if (app->xref->info)
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{
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obj = fz_dictgets(app->xref->info, "Title");
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if (obj)
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{
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error = pdf_toutf8(&app->doctitle, obj);
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if (error)
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pdfapp_error(app, error);
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}
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}
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/*
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* Start at first page
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*/
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app->shrinkwrap = 1;
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if (app->pageno < 1)
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app->pageno = 1;
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if (app->zoom <= 0.0)
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app->zoom = 1.0;
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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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pdfapp_showpage(app, 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->pages)
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pdf_droppagetree(app->pages);
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app->pages = nil;
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if (app->page)
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pdf_droppage(app->page);
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app->page = nil;
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if (app->image)
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fz_droppixmap(app->image);
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app->image = nil;
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if (app->outline)
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pdf_dropoutline(app->outline);
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app->outline = nil;
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if (app->xref->store)
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pdf_dropstore(app->xref->store);
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app->xref->store = nil;
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pdf_closexref(app->xref);
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app->xref = nil;
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}
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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->mediabox.y1));
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ctm = fz_concat(ctm, fz_scale(app->zoom, -app->zoom));
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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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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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app->panx = newx;
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app->pany = newy;
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}
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void pdfapp_showpage(pdfapp_t *app, int loadpage, int drawpage)
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{
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char buf[256];
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fz_error *error;
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fz_matrix ctm;
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fz_rect bbox;
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fz_obj *obj;
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if (loadpage)
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{
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wincursor(app, WAIT);
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if (app->page)
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pdf_droppage(app->page);
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app->page = nil;
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obj = pdf_getpageobject(app->pages, app->pageno - 1);
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error = pdf_loadpage(&app->page, app->xref, obj);
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if (error)
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pdfapp_error(app, error);
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sprintf(buf, "%s - %d/%d", app->doctitle,
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app->pageno, pdf_getpagecount(app->pages));
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wintitle(app, buf);
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}
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if (drawpage)
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{
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wincursor(app, WAIT);
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if (app->image)
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fz_droppixmap(app->image);
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app->image = nil;
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ctm = pdfapp_viewctm(app);
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bbox = fz_transformaabb(ctm, app->page->mediabox);
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error = fz_rendertree(&app->image, app->rast, app->page->tree,
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ctm, fz_roundrect(bbox), 1);
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if (error)
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pdfapp_error(app, error);
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winconvert(app, app->image);
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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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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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void pdfapp_gotouri(pdfapp_t *app, fz_obj *uri)
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{
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char buf[2048];
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memcpy(buf, fz_tostrbuf(uri), fz_tostrlen(uri));
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buf[fz_tostrlen(uri)] = 0;
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winopenuri(app, buf);
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}
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void pdfapp_gotopage(pdfapp_t *app, fz_obj *obj)
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{
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int oid = fz_tonum(obj);
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int i;
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for (i = 0; i < pdf_getpagecount(app->pages); i++)
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{
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if (fz_tonum(app->pages->pref[i]) == oid)
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{
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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 = i + 1;
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pdfapp_showpage(app, 1, 1);
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return;
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}
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}
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}
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void pdfapp_onresize(pdfapp_t *app, int w, int h)
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{
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if (app->winw != w || app->winh != h)
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{
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app->winw = w;
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app->winh = h;
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pdfapp_panview(app, app->panx, app->pany);
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winrepaint(app);
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}
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}
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void pdfapp_onkey(pdfapp_t *app, int c)
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{
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int oldpage = app->pageno;
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int panto = 0; /* 0 = top, 1 = bottom, 2 = leave alone */
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/*
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* Save numbers typed for later
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*/
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if (c >= '0' && c <= '9')
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app->number[app->numberlen++] = c;
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else
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if (c != 'g' && c != 'G')
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app->numberlen = 0;
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switch (c)
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{
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/*
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* Zoom and rotate
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*/
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case '+': case '=':
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app->zoom += 0.1;
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if (app->zoom > 3.0)
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app->zoom = 3.0;
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pdfapp_showpage(app, 0, 1);
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break;
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case '-':
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app->zoom -= 0.1;
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if (app->zoom < 0.1)
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app->zoom = 0.1;
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pdfapp_showpage(app, 0, 1);
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break;
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case 'l': case '<':
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app->rotate -= 90;
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pdfapp_showpage(app, 0, 1);
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break;
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case 'r': case '>':
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app->rotate += 90;
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pdfapp_showpage(app, 0, 1);
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break;
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case 'a':
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app->rotate -= 15;
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pdfapp_showpage(app, 0, 1);
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break;
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case 's':
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app->rotate += 15;
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pdfapp_showpage(app, 0, 1);
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break;
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/*
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* Pan view, but dont need to repaint image
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*/
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case 'w':
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app->shrinkwrap = 1;
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app->panx = app->pany = 0;
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pdfapp_showpage(app, 0, 0);
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break;
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case 'd':
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app->pany -= app->image->h / 10;
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pdfapp_showpage(app, 0, 0);
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break;
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case 'u':
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app->pany += app->image->h / 10;
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pdfapp_showpage(app, 0, 0);
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break;
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case ',':
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app->panx += app->image->w / 10;
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pdfapp_showpage(app, 0, 0);
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break;
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case '.':
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app->panx -= app->image->w / 10;
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pdfapp_showpage(app, 0, 0);
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break;
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/*
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* Page navigation
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*/
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case 'g':
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case '\n':
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case '\r':
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if (app->numberlen > 0)
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{
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app->number[app->numberlen] = '\0';
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app->pageno = atoi(app->number);
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app->numberlen = 0;
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}
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break;
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case 'G':
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app->pageno = pdf_getpagecount(app->pages);
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break;
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case 'm':
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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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break;
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case 't':
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if (app->histlen > 0)
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app->pageno = app->hist[--app->histlen];
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break;
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/*
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* Back and forth ...
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*/
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case 'p':
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panto = 2;
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app->pageno--;
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break;
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case 'b': case '\b':
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panto = 1;
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app->pageno--;
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break;
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case 'n':
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panto = 2;
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case 'f': case ' ':
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app->pageno++;
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break;
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case 'B':
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app->pageno -= 10;
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break;
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case 'F':
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app->pageno += 10;
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break;
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}
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if (app->pageno < 1)
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app->pageno = 1;
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if (app->pageno > pdf_getpagecount(app->pages))
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app->pageno = pdf_getpagecount(app->pages);
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if (app->pageno != oldpage)
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{
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switch (panto)
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{
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case 0: app->pany = 0; break;
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case 1: app->pany = -2000; break;
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case 2: break;
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}
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pdfapp_showpage(app, 1, 1);
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}
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}
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void pdfapp_onmouse(pdfapp_t *app, int x, int y, int btn, int modifiers, int state)
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{
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pdf_link *link;
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fz_matrix ctm;
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fz_point p;
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p.x = x - app->panx + app->image->x;
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p.y = y - app->pany + app->image->y;
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ctm = pdfapp_viewctm(app);
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ctm = fz_invertmatrix(ctm);
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p = fz_transformpoint(ctm, p);
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for (link = app->page->links; link; link = link->next)
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{
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if (p.x >= link->rect.x0 && p.x <= link->rect.x1)
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if (p.y >= link->rect.y0 && p.y <= link->rect.y1)
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break;
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}
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if (link)
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{
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wincursor(app, HAND);
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if (btn == 1 && state == 1)
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{
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if (fz_isstring(link->dest))
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pdfapp_gotouri(app, link->dest);
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if (fz_isindirect(link->dest))
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pdfapp_gotopage(app, link->dest);
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return;
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}
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}
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else
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{
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wincursor(app, ARROW);
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}
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if (state == 1)
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{
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if (btn == 1 && !app->iscopying)
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{
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app->ispanning = 1;
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app->selx = x;
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app->sely = y;
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}
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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 */
|
|
app->zoom += 0.1 * dir;
|
|
if (app->zoom > 3.0)
|
|
app->zoom = 3.0;
|
|
if (app->zoom < 0.1)
|
|
app->zoom = 0.1;
|
|
pdfapp_showpage(app, 0, 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->selr.x1 = MAX(app->selx, x);
|
|
app->selr.y0 = MIN(app->sely, y);
|
|
app->selr.y1 = MAX(app->sely, 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;
|
|
pdfapp_panview(app, newx, newy);
|
|
app->selx = x;
|
|
app->sely = y;
|
|
}
|
|
|
|
else if (app->iscopying)
|
|
{
|
|
app->selr.x0 = MIN(app->selx, x);
|
|
app->selr.x1 = MAX(app->selx, x);
|
|
app->selr.y0 = MIN(app->sely, y);
|
|
app->selr.y1 = MAX(app->sely, y);
|
|
winrepaint(app);
|
|
}
|
|
|
|
}
|
|
|
|
void pdfapp_oncopy(pdfapp_t *app, unsigned short *ucsbuf, int ucslen)
|
|
{
|
|
fz_error *error;
|
|
pdf_textline *line, *ln;
|
|
int y, c;
|
|
int i, p;
|
|
|
|
int bx0, bx1, by0, by1;
|
|
|
|
int x0 = app->image->x + app->selr.x0 - app->panx;
|
|
int x1 = app->image->x + app->selr.x1 - app->panx;
|
|
int y0 = app->image->y + app->selr.y0 - app->pany;
|
|
int y1 = app->image->y + app->selr.y1 - app->pany;
|
|
|
|
error = pdf_loadtextfromtree(&line, app->page->tree, pdfapp_viewctm(app));
|
|
if (error)
|
|
pdfapp_error(app, error);
|
|
|
|
p = 0;
|
|
for (ln = line; ln; ln = ln->next)
|
|
{
|
|
y = y0 - 1;
|
|
for (i = 0; i < ln->len; i++)
|
|
{
|
|
bx0 = ln->text[i].bbox.x0;
|
|
bx1 = ln->text[i].bbox.x1;
|
|
by0 = ln->text[i].bbox.y0;
|
|
by1 = ln->text[i].bbox.y1;
|
|
c = ln->text[i].c;
|
|
if (c < 32)
|
|
c = '?';
|
|
if (bx1 >= x0 && bx0 <= x1 && by1 >= y0 && by0 <= y1)
|
|
if (p < ucslen - 1)
|
|
ucsbuf[p++] = c;
|
|
}
|
|
|
|
if (by1 >= y0 && by0 <= y1)
|
|
{
|
|
#ifdef WIN32
|
|
if (p < ucslen - 1)
|
|
ucsbuf[p++] = '\r';
|
|
#endif
|
|
if (p < ucslen - 1)
|
|
ucsbuf[p++] = '\n';
|
|
}
|
|
}
|
|
|
|
ucsbuf[p] = 0;
|
|
|
|
pdf_droptextline(line);
|
|
}
|
|
|