| 0,0 → 1,1225 |
|---|
| #include "fitz.h" |
| #include "mupdf.h" |
| #include "muxps.h" |
| #include "pdfapp.h" |
| |
| #include <ctype.h> /* for tolower() */ |
| |
| #define ZOOMSTEP 1.142857 |
| #define BEYOND_THRESHHOLD 40 |
| |
| enum panning |
| { |
| DONT_PAN = 0, |
| PAN_TO_TOP, |
| PAN_TO_BOTTOM |
| }; |
| |
| static void pdfapp_showpage(pdfapp_t *app, int loadpage, int drawpage, int repaint); |
| |
| static void pdfapp_warn(pdfapp_t *app, const char *fmt, ...) |
| { |
| char buf[1024]; |
| va_list ap; |
| va_start(ap, fmt); |
| vsprintf(buf, fmt, ap); |
| va_end(ap); |
| winwarn(app, buf); |
| } |
| |
| static void pdfapp_error(pdfapp_t *app, fz_error error) |
| { |
| winerror(app, error); |
| } |
| |
| char *pdfapp_version(pdfapp_t *app) |
| { |
| return |
| "MuPDF 0.9\n" |
| "Copyright 2006-2011 Artifex Sofware, Inc.\n"; |
| } |
| |
| char *pdfapp_usage(pdfapp_t *app) |
| { |
| return |
| "L\t\t-- rotate left\n" |
| "R\t\t-- rotate right\n" |
| "h\t\t-- scroll left\n" |
| "j down\t\t-- scroll down\n" |
| "k up\t\t-- scroll up\n" |
| "l\t\t-- scroll right\n" |
| "+\t\t-- zoom in\n" |
| "-\t\t-- zoom out\n" |
| "w\t\t-- shrinkwrap\n" |
| "r\t\t-- reload file\n" |
| ". pgdn right space\t-- next page\n" |
| ", pgup left b\t-- previous page\n" |
| ">\t\t-- next 10 pages\n" |
| "<\t\t-- back 10 pages\n" |
| "m\t\t-- mark page for snap back\n" |
| "t\t\t-- pop back to latest mark\n" |
| "1m\t\t-- mark page in register 1\n" |
| "1t\t\t-- go to page in register 1\n" |
| "123g\t\t-- go to page 123\n" |
| "/\t\t-- search for text\n" |
| "n\t\t-- find next search result\n" |
| "N\t\t-- find previous search result\n" |
| "c\t\t-- toggle between color and grayscale\n" |
| ; |
| } |
| |
| void pdfapp_init(pdfapp_t *app) |
| { |
| memset(app, 0, sizeof(pdfapp_t)); |
| app->scrw = 640; |
| app->scrh = 480; |
| app->resolution = 72; |
| } |
| |
| void pdfapp_invert(pdfapp_t *app, fz_bbox rect) |
| { |
| unsigned char *p; |
| int x, y, n; |
| |
| int x0 = CLAMP(rect.x0 - app->image->x, 0, app->image->w - 1); |
| int x1 = CLAMP(rect.x1 - app->image->x, 0, app->image->w - 1); |
| int y0 = CLAMP(rect.y0 - app->image->y, 0, app->image->h - 1); |
| int y1 = CLAMP(rect.y1 - app->image->y, 0, app->image->h - 1); |
| |
| for (y = y0; y < y1; y++) |
| { |
| p = app->image->samples + (y * app->image->w + x0) * app->image->n; |
| for (x = x0; x < x1; x++) |
| { |
| for (n = app->image->n; n > 0; n--, p++) |
| *p = 255 - *p; |
| } |
| } |
| } |
| |
| static void pdfapp_open_pdf(pdfapp_t *app, char *filename, int fd) |
| { |
| fz_error error; |
| fz_stream *file; |
| char *password = ""; |
| fz_obj *obj; |
| fz_obj *info; |
| |
| /* |
| * Open PDF and load xref table |
| */ |
| __menuet__debug_out("FZ OPEN\n"); |
| //file = fz_open_fd(fd); |
| __menuet__debug_out("FZ ready\n"); |
| error = pdf_open_xref(&app->xref, filename, NULL); |
| if (error){ |
| __menuet__debug_out("FZ can't open\n"); |
| pdfapp_error(app, fz_rethrow(error, "cannot open document '%s'", filename));} |
| fz_close(file); |
| |
| /* |
| * Handle encrypted PDF files |
| */ |
| /* |
| if (pdf_needs_password(app->xref)) |
| { |
| int okay = pdf_authenticate_password(app->xref, password); |
| while (!okay) |
| { |
| password = winpassword(app, filename); |
| if (!password) |
| exit(1); |
| okay = pdf_authenticate_password(app->xref, password); |
| if (!okay) |
| pdfapp_warn(app, "Invalid password."); |
| } |
| } |
| * */ |
| |
| /* |
| * Load meta information |
| */ |
| |
| /* |
| app->outline = pdf_load_outline(app->xref); |
| |
| app->doctitle = filename; |
| if (strrchr(app->doctitle, '\\')) |
| app->doctitle = strrchr(app->doctitle, '\\') + 1; |
| if (strrchr(app->doctitle, '/')) |
| app->doctitle = strrchr(app->doctitle, '/') + 1; |
| info = fz_dict_gets(app->xref->trailer, "Info"); |
| if (info) |
| { |
| obj = fz_dict_gets(info, "Title"); |
| if (obj) |
| app->doctitle = pdf_to_utf8(obj); |
| } */ |
| |
| /* |
| * Start at first page |
| */ |
| __menuet__debug_out("Start at first page\n"); |
| |
| error = pdf_load_page_tree(app->xref); |
| if (error) { |
| __menuet__debug_out("Can't load tree\n"); |
| pdfapp_error(app, fz_rethrow(error, "cannot load page tree"));} |
| |
| __menuet__debug_out("Page counter\n"); |
| app->pagecount = pdf_count_pages(app->xref); |
| __menuet__debug_out("All is set!\n"); |
| } |
| |
| static void pdfapp_open_xps(pdfapp_t *app, char *filename, int fd) |
| { |
| fz_error error; |
| fz_stream *file; |
| |
| file = fz_open_fd(fd); |
| error = xps_open_stream(&app->xps, file); |
| if (error) |
| pdfapp_error(app, fz_rethrow(error, "cannot open document '%s'", filename)); |
| fz_close(file); |
| |
| app->doctitle = filename; |
| |
| app->pagecount = xps_count_pages(app->xps); |
| } |
| |
| void pdfapp_open(pdfapp_t *app, char *filename, int fd, int reload) |
| { |
| if (strstr(filename, ".xps") || strstr(filename, ".XPS") || strstr(filename, ".rels")) |
| pdfapp_open_xps(app, filename, fd); |
| else |
| pdfapp_open_pdf(app, filename, fd); |
| |
| app->cache = fz_new_glyph_cache(); |
| |
| if (app->pageno < 1) |
| app->pageno = 1; |
| if (app->pageno > app->pagecount) |
| app->pageno = app->pagecount; |
| if (app->resolution < MINRES) |
| app->resolution = MINRES; |
| if (app->resolution > MAXRES) |
| app->resolution = MAXRES; |
| |
| if (!reload) |
| { |
| app->shrinkwrap = 1; |
| app->rotate = 0; |
| app->panx = 0; |
| app->pany = 0; |
| } |
| |
| pdfapp_showpage(app, 1, 1, 1); |
| } |
| |
| void pdfapp_close(pdfapp_t *app) |
| { |
| if (app->cache) |
| fz_free_glyph_cache(app->cache); |
| app->cache = NULL; |
| |
| if (app->image) |
| fz_drop_pixmap(app->image); |
| app->image = NULL; |
| |
| if (app->outline) |
| pdf_free_outline(app->outline); |
| app->outline = NULL; |
| |
| if (app->xref) |
| { |
| if (app->xref->store) |
| pdf_free_store(app->xref->store); |
| app->xref->store = NULL; |
| |
| pdf_free_xref(app->xref); |
| app->xref = NULL; |
| } |
| |
| if (app->xps) |
| { |
| xps_free_context(app->xps); |
| app->xps = NULL; |
| } |
| |
| fz_flush_warnings(); |
| } |
| |
| static fz_matrix pdfapp_viewctm(pdfapp_t *app) |
| { |
| fz_matrix ctm; |
| ctm = fz_identity; |
| ctm = fz_concat(ctm, fz_translate(0, -app->page_bbox.y1)); |
| if (app->xref) |
| ctm = fz_concat(ctm, fz_scale(app->resolution/72.0f, -app->resolution/72.0f)); |
| else |
| ctm = fz_concat(ctm, fz_scale(app->resolution/96.0f, app->resolution/96.0f)); |
| ctm = fz_concat(ctm, fz_rotate(app->rotate + app->page_rotate)); |
| return ctm; |
| } |
| |
| static void pdfapp_panview(pdfapp_t *app, int newx, int newy) |
| { |
| if (newx < 0) |
| newx = 0; |
| if (newy < 0) |
| newy = 0; |
| |
| if (newx + app->image->w < app->winw) |
| newx = app->winw - app->image->w; |
| if (newy + app->image->h < app->winh) |
| newy = app->winh - app->image->h; |
| |
| if (app->winw >= app->image->w) |
| newx = (app->winw - app->image->w) / 2; |
| if (app->winh >= app->image->h) |
| newy = (app->winh - app->image->h) / 2; |
| |
| if (newx != app->panx || newy != app->pany) |
| winrepaint(app); |
| |
| if (newy > app->image->h) { |
| |
| app->pageno++; |
| |
| |
| if (app->pageno > app->pagecount) |
| app->pageno = app->pagecount; |
| |
| |
| newy = 0; |
| app->pany = newy; |
| |
| pdfapp_showpage(app, 1, 1, 1); |
| } |
| |
| app->panx = newx; |
| app->pany = newy; |
| } |
| |
| static void pdfapp_loadpage_pdf(pdfapp_t *app) |
| { |
| pdf_page *page; |
| fz_error error; |
| fz_device *mdev; |
| |
| error = pdf_load_page(&page, app->xref, app->pageno - 1); |
| if (error) |
| pdfapp_error(app, error); |
| |
| app->page_bbox = page->mediabox; |
| app->page_rotate = page->rotate; |
| app->page_links = page->links; |
| page->links = NULL; |
| |
| /* Create display list */ |
| app->page_list = fz_new_display_list(); |
| mdev = fz_new_list_device(app->page_list); |
| error = pdf_run_page(app->xref, page, mdev, fz_identity); |
| if (error) |
| { |
| error = fz_rethrow(error, "cannot draw page %d in '%s'", app->pageno, app->doctitle); |
| pdfapp_error(app, error); |
| } |
| fz_free_device(mdev); |
| |
| pdf_free_page(page); |
| |
| pdf_age_store(app->xref->store, 3); |
| } |
| |
| static void pdfapp_loadpage_xps(pdfapp_t *app) |
| { |
| xps_page *page; |
| fz_device *mdev; |
| fz_error error; |
| |
| error = xps_load_page(&page, app->xps, app->pageno - 1); |
| if (error) |
| pdfapp_error(app, fz_rethrow(error, "cannot load page %d in file '%s'", app->pageno, app->doctitle)); |
| |
| app->page_bbox.x0 = 0; |
| app->page_bbox.y0 = 0; |
| app->page_bbox.x1 = page->width; |
| app->page_bbox.y1 = page->height; |
| app->page_rotate = 0; |
| app->page_links = NULL; |
| |
| /* Create display list */ |
| app->page_list = fz_new_display_list(); |
| mdev = fz_new_list_device(app->page_list); |
| app->xps->dev = mdev; |
| xps_parse_fixed_page(app->xps, fz_identity, page); |
| app->xps->dev = NULL; |
| fz_free_device(mdev); |
| |
| xps_free_page(app->xps, page); |
| } |
| |
| static void pdfapp_showpage(pdfapp_t *app, int loadpage, int drawpage, int repaint) |
| { |
| char buf[256]; |
| fz_device *idev; |
| fz_device *tdev; |
| fz_colorspace *colorspace; |
| fz_matrix ctm; |
| fz_bbox bbox; |
| |
| wincursor(app, WAIT); |
| |
| if (loadpage) |
| { |
| if (app->page_list) |
| fz_free_display_list(app->page_list); |
| if (app->page_text) |
| fz_free_text_span(app->page_text); |
| if (app->page_links) |
| pdf_free_link(app->page_links); |
| |
| if (app->xref) |
| pdfapp_loadpage_pdf(app); |
| if (app->xps) |
| pdfapp_loadpage_xps(app); |
| |
| /* Zero search hit position */ |
| app->hit = -1; |
| app->hitlen = 0; |
| |
| /* Extract text */ |
| app->page_text = fz_new_text_span(); |
| tdev = fz_new_text_device(app->page_text); |
| fz_execute_display_list(app->page_list, tdev, fz_identity, fz_infinite_bbox); |
| fz_free_device(tdev); |
| } |
| |
| if (drawpage) |
| { |
| sprintf(buf, "%s - %d/%d (%d dpi)", app->doctitle, |
| app->pageno, app->pagecount, app->resolution); |
| wintitle(app, buf); |
| |
| ctm = pdfapp_viewctm(app); |
| bbox = fz_round_rect(fz_transform_rect(ctm, app->page_bbox)); |
| |
| /* Draw */ |
| if (app->image) |
| fz_drop_pixmap(app->image); |
| if (app->grayscale) |
| colorspace = fz_device_gray; |
| else |
| //#ifdef _WIN32 |
| colorspace = fz_device_bgr; |
| //#else |
| // colorspace = fz_device_rgb; |
| //#endif |
| app->image = fz_new_pixmap_with_rect(colorspace, bbox); |
| fz_clear_pixmap_with_color(app->image, 255); |
| idev = fz_new_draw_device(app->cache, app->image); |
| fz_execute_display_list(app->page_list, idev, ctm, bbox); |
| fz_free_device(idev); |
| } |
| |
| if (repaint) |
| { |
| pdfapp_panview(app, app->panx, app->pany); |
| |
| if (app->shrinkwrap) |
| { |
| __menuet__debug_out ("SHRINK\n"); |
| int w = app->image->w; |
| int h = app->image->h; |
| if (app->winw == w) |
| app->panx = 0; |
| if (app->winh == h) |
| app->pany = 0; |
| if (w > app->scrw * 90 / 100) |
| w = app->scrw * 90 / 100; |
| if (h > app->scrh * 90 / 100) |
| h = app->scrh * 90 / 100; |
| if (w != app->winw || h != app->winh) |
| winresize(app, w, h); |
| } |
| |
| winrepaint(app); |
| |
| wincursor(app, ARROW); |
| } |
| |
| fz_flush_warnings(); |
| } |
| |
| static void pdfapp_gotouri(pdfapp_t *app, fz_obj *uri) |
| { |
| char *buf; |
| buf = fz_malloc(fz_to_str_len(uri) + 1); |
| memcpy(buf, fz_to_str_buf(uri), fz_to_str_len(uri)); |
| buf[fz_to_str_len(uri)] = 0; |
| winopenuri(app, buf); |
| fz_free(buf); |
| } |
| |
| static void pdfapp_gotopage(pdfapp_t *app, fz_obj *obj) |
| { |
| int number; |
| |
| number = pdf_find_page_number(app->xref, obj); |
| if (number < 0) |
| return; |
| |
| if (app->histlen + 1 == 256) |
| { |
| memmove(app->hist, app->hist + 1, sizeof(int) * 255); |
| app->histlen --; |
| } |
| app->hist[app->histlen++] = app->pageno; |
| app->pageno = number + 1; |
| pdfapp_showpage(app, 1, 1, 1); |
| } |
| |
| static inline fz_bbox bboxcharat(fz_text_span *span, int idx) |
| { |
| int ofs = 0; |
| while (span) |
| { |
| if (idx < ofs + span->len) |
| return span->text[idx - ofs].bbox; |
| if (span->eol) |
| { |
| if (idx == ofs + span->len) |
| return fz_empty_bbox; |
| ofs ++; |
| } |
| ofs += span->len; |
| span = span->next; |
| } |
| return fz_empty_bbox; |
| } |
| |
| void pdfapp_inverthit(pdfapp_t *app) |
| { |
| fz_bbox hitbox, bbox; |
| fz_matrix ctm; |
| int i; |
| |
| if (app->hit < 0) |
| return; |
| |
| hitbox = fz_empty_bbox; |
| ctm = pdfapp_viewctm(app); |
| |
| for (i = app->hit; i < app->hit + app->hitlen; i++) |
| { |
| bbox = bboxcharat(app->page_text, i); |
| if (fz_is_empty_rect(bbox)) |
| { |
| if (!fz_is_empty_rect(hitbox)) |
| pdfapp_invert(app, fz_transform_bbox(ctm, hitbox)); |
| hitbox = fz_empty_bbox; |
| } |
| else |
| { |
| hitbox = fz_union_bbox(hitbox, bbox); |
| } |
| } |
| |
| if (!fz_is_empty_rect(hitbox)) |
| pdfapp_invert(app, fz_transform_bbox(ctm, hitbox)); |
| } |
| |
| static inline int charat(fz_text_span *span, int idx) |
| { |
| int ofs = 0; |
| while (span) |
| { |
| if (idx < ofs + span->len) |
| return span->text[idx - ofs].c; |
| if (span->eol) |
| { |
| if (idx == ofs + span->len) |
| return ' '; |
| ofs ++; |
| } |
| ofs += span->len; |
| span = span->next; |
| } |
| return 0; |
| } |
| |
| static int textlen(fz_text_span *span) |
| { |
| int len = 0; |
| while (span) |
| { |
| len += span->len; |
| if (span->eol) |
| len ++; |
| span = span->next; |
| } |
| return len; |
| } |
| |
| static int match(char *s, fz_text_span *span, int n) |
| { |
| int orig = n; |
| int c; |
| while ((c = *s++)) |
| { |
| if (c == ' ' && charat(span, n) == ' ') |
| { |
| while (charat(span, n) == ' ') |
| n++; |
| } |
| else |
| { |
| if (tolower(c) != tolower(charat(span, n))) |
| return 0; |
| n++; |
| } |
| } |
| return n - orig; |
| } |
| |
| static void pdfapp_searchforward(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 + 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; |
| } |