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|
#include "pdfapp.h"
#include "mupdf.h"
#include "muxps.h"
#include "mucbz.h"
#include <ctype.h> /* for tolower() */
#define ZOOMSTEP 1.142857
#define BEYOND_THRESHHOLD 40
#ifndef PATH_MAX
#define PATH_MAX (1024)
#endif
#ifndef MAX
#define MAX(a,b) ((a) > (b) ? (a) : (b))
#endif
enum panning
{
DONT_PAN = 0,
PAN_TO_TOP,
PAN_TO_BOTTOM
};
static void pdfapp_showpage(pdfapp_t *app, int loadpage, int drawpage, int repaint, int transition);
static void pdfapp_updatepage(pdfapp_t *app);
static void pdfapp_warn(pdfapp_t *app, const char *fmt, ...)
{
char buf[1024];
va_list ap;
va_start(ap, fmt);
vsnprintf(buf, sizeof(buf), fmt, ap);
va_end(ap);
buf[sizeof(buf)-1] = 0;
winwarn(app, buf);
}
static void pdfapp_error(pdfapp_t *app, char *msg)
{
winerror(app, msg);
}
char *pdfapp_version(pdfapp_t *app)
{
return
"MuPDF 1.1\n"
"Copyright 2006-2012 Artifex Software, 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-- zoom to fit window width\n"
"H\t\t-- zoom to fit window height\n"
"w\t\t-- shrinkwrap\n"
"f\t\t-- fullscreen\n"
"r\t\t-- reload file\n"
". pgdn right spc\t-- next page\n"
", pgup left b bkspc\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"
"G\t\t-- go to last page\n"
"123g\t\t-- go to page 123\n"
"/\t\t-- search forwards for text\n"
"?\t\t-- search backwards 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"
"i\t\t-- toggle inverted color mode\n"
"q\t\t-- quit\n"
;
}
void pdfapp_init(fz_context *ctx, pdfapp_t *app)
{
memset(app, 0, sizeof(pdfapp_t));
app->scrw = 640;
app->scrh = 480;
app->resolution = 72;
app->ctx = ctx;
#ifdef _WIN32
app->colorspace = fz_device_bgr;
#else
app->colorspace = fz_device_rgb;
#endif
}
void pdfapp_invert(pdfapp_t *app, fz_bbox rect)
{
fz_invert_pixmap_rect(app->image, rect);
}
static void event_cb(fz_doc_event *event, void *data)
{
pdfapp_t *app = (pdfapp_t *)data;
switch (event->type)
{
case FZ_DOCUMENT_EVENT_ALERT:
{
fz_alert_event *alert = fz_access_alert_event(event);
winalert(app, alert);
}
break;
case FZ_DOCUMENT_EVENT_PRINT:
winprint(app);
break;
case FZ_DOCUMENT_EVENT_EXEC_MENU_ITEM:
{
char *item = fz_access_exec_menu_item_event(event);
if (!strcmp(item, "Print"))
winprint(app);
else
pdfapp_warn(app, "The document attempted to execute menu item: %s. (Not supported)", item);
}
break;
case FZ_DOCUMENT_EVENT_EXEC_DIALOG:
pdfapp_warn(app, "The document attempted to open a dialog box. (Not supported)");
break;
case FZ_DOCUMENT_EVENT_LAUNCH_URL:
{
fz_launch_url_event *launch_url = fz_access_launch_url_event(event);
pdfapp_warn(app, "The document attempted to open url: %s. (Not supported by app)", launch_url->url);
}
break;
case FZ_DOCUMENT_EVENT_MAIL_DOC:
{
fz_mail_doc_event *mail_doc = fz_access_mail_doc_event(event);
pdfapp_warn(app, "The document attmepted to mail the document%s%s%s%s%s%s%s%s (Not supported)",
mail_doc->to[0]?", To: ":"", mail_doc->to,
mail_doc->cc[0]?", Cc: ":"", mail_doc->cc,
mail_doc->bcc[0]?", Bcc: ":"", mail_doc->bcc,
mail_doc->subject[0]?", Subject: ":"", mail_doc->subject);
}
break;
}
}
void pdfapp_open(pdfapp_t *app, char *filename, int reload)
{
fz_context *ctx = app->ctx;
char *password = "";
fz_try(ctx)
{
fz_interactive *idoc;
app->doc = fz_open_document(ctx, filename);
idoc = fz_interact(app->doc);
if (idoc)
fz_set_doc_event_callback(idoc, event_cb, app);
if (fz_needs_password(app->doc))
{
int okay = fz_authenticate_password(app->doc, password);
while (!okay)
{
password = winpassword(app, filename);
if (!password)
fz_throw(ctx, "Needs a password");
okay = fz_authenticate_password(app->doc, password);
if (!okay)
pdfapp_warn(app, "Invalid password.");
}
}
app->docpath = fz_strdup(ctx, filename);
app->doctitle = filename;
if (strrchr(app->doctitle, '\\'))
app->doctitle = strrchr(app->doctitle, '\\') + 1;
if (strrchr(app->doctitle, '/'))
app->doctitle = strrchr(app->doctitle, '/') + 1;
app->doctitle = fz_strdup(ctx, app->doctitle);
app->pagecount = fz_count_pages(app->doc);
app->outline = fz_load_outline(app->doc);
}
fz_catch(ctx)
{
pdfapp_error(app, "cannot open document");
}
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, 0);
}
void pdfapp_close(pdfapp_t *app)
{
if (app->page_list)
fz_free_display_list(app->ctx, app->page_list);
app->page_list = NULL;
if (app->annotations_list)
fz_free_display_list(app->ctx, app->annotations_list);
app->annotations_list = NULL;
if (app->page_text)
fz_free_text_page(app->ctx, app->page_text);
app->page_text = NULL;
if (app->page_sheet)
fz_free_text_sheet(app->ctx, app->page_sheet);
app->page_sheet = NULL;
if (app->page_links)
fz_drop_link(app->ctx, app->page_links);
app->page_links = NULL;
if (app->doctitle)
fz_free(app->ctx, app->doctitle);
app->doctitle = NULL;
if (app->docpath)
fz_free(app->ctx, app->docpath);
app->docpath = NULL;
if (app->image)
fz_drop_pixmap(app->ctx, app->image);
app->image = NULL;
if (app->new_image)
fz_drop_pixmap(app->ctx, app->new_image);
app->new_image = NULL;
if (app->old_image)
fz_drop_pixmap(app->ctx, app->old_image);
app->old_image = NULL;
if (app->outline)
fz_free_outline(app->ctx, app->outline);
app->outline = NULL;
if (app->page)
fz_free_page(app->doc, app->page);
app->page = NULL;
if (app->doc)
{
fz_close_document(app->doc);
app->doc = NULL;
}
fz_flush_warnings(app->ctx);
}
static int gen_tmp_file(char *buf, int len)
{
int i;
char *name = strrchr(buf, '/');
if (name == NULL)
name = strrchr(buf, '\\');
if (name != NULL)
name++;
else
name = buf;
for (i = 0; i < 10000; i++)
{
FILE *f;
snprintf(name, buf+len-name, "tmp%04d", i);
f = fopen(buf, "r");
if (f == NULL)
return 1;
fclose(f);
}
return 0;
}
static int pdfapp_save(pdfapp_t *app)
{
char buf[PATH_MAX];
if (wingetsavepath(app, buf, PATH_MAX))
{
fz_write_options opts;
opts.do_ascii = 1;
opts.do_expand = 0;
opts.do_garbage = 1;
opts.do_linear = 0;
if (strcmp(buf, app->docpath) == 0)
{
if (gen_tmp_file(buf, PATH_MAX))
{
int written;
fz_var(written);
fz_try(app->ctx)
{
fz_write_document(app->doc, buf, &opts);
written = 1;
}
fz_catch(app->ctx)
{
written = 0;
}
if (written)
{
char buf2[PATH_MAX];
strncpy(buf2, app->docpath, PATH_MAX);
pdfapp_close(app);
winreplacefile(buf, buf2);
pdfapp_open(app, buf2, 1);
}
return written;
}
else
{
return 0;
}
}
else
{
fz_write_document(app->doc, buf, &opts);
return 1;
}
return 1;
}
else
{
return 0;
}
}
int pdfapp_preclose(pdfapp_t *app)
{
fz_interactive *idoc = fz_interact(app->doc);
if (idoc && fz_has_unsaved_changes(idoc))
{
switch (winsavequery(app))
{
case DISCARD:
return 1;
case CANCEL:
return 0;
case SAVE:
return pdfapp_save(app);
}
}
return 1;
}
static fz_matrix pdfapp_viewctm(pdfapp_t *app)
{
fz_matrix ctm;
ctm = fz_scale(app->resolution/72.0f, app->resolution/72.0f);
ctm = fz_concat(ctm, fz_rotate(app->rotate));
return ctm;
}
static void pdfapp_panview(pdfapp_t *app, int newx, int newy)
{
int image_w = fz_pixmap_width(app->ctx, app->image);
int image_h = fz_pixmap_height(app->ctx, app->image);
if (newx > 0)
newx = 0;
if (newy > 0)
newy = 0;
if (newx + image_w < app->winw)
newx = app->winw - image_w;
if (newy + image_h < app->winh)
newy = app->winh - image_h;
if (app->winw >= image_w)
newx = (app->winw - image_w) / 2;
if (app->winh >= image_h)
newy = (app->winh - image_h) / 2;
if (newx != app->panx || newy != app->pany)
winrepaint(app);
app->panx = newx;
app->pany = newy;
}
static void pdfapp_loadpage(pdfapp_t *app)
{
fz_device *mdev = NULL;
int errored = 0;
fz_cookie cookie = { 0 };
fz_var(mdev);
if (app->page_list)
fz_free_display_list(app->ctx, app->page_list);
if (app->annotations_list)
fz_free_display_list(app->ctx, app->annotations_list);
if (app->page_text)
fz_free_text_page(app->ctx, app->page_text);
if (app->page_sheet)
fz_free_text_sheet(app->ctx, app->page_sheet);
if (app->page_links)
fz_drop_link(app->ctx, app->page_links);
if (app->page)
fz_free_page(app->doc, app->page);
app->page_list = NULL;
app->annotations_list = NULL;
app->page_text = NULL;
app->page_sheet = NULL;
app->page_links = NULL;
app->page = NULL;
app->page_bbox.x0 = 0;
app->page_bbox.y0 = 0;
app->page_bbox.x1 = 100;
app->page_bbox.y1 = 100;
fz_try(app->ctx)
{
app->page = fz_load_page(app->doc, app->pageno - 1);
app->page_bbox = fz_bound_page(app->doc, app->page);
}
fz_catch(app->ctx)
{
pdfapp_warn(app, "Cannot load page");
return;
}
fz_try(app->ctx)
{
fz_annot *annot;
/* Create display lists */
app->page_list = fz_new_display_list(app->ctx);
mdev = fz_new_list_device(app->ctx, app->page_list);
fz_run_page_contents(app->doc, app->page, mdev, fz_identity, &cookie);
fz_free_device(mdev);
mdev = NULL;
app->annotations_list = fz_new_display_list(app->ctx);
mdev = fz_new_list_device(app->ctx, app->annotations_list);
for (annot = fz_first_annot(app->doc, app->page); annot; annot = fz_next_annot(app->doc, annot))
fz_run_annot(app->doc, app->page, annot, mdev, fz_identity, &cookie);
if (cookie.errors)
{
pdfapp_warn(app, "Errors found on page");
errored = 1;
}
}
fz_always(app->ctx)
{
fz_free_device(mdev);
}
fz_catch(app->ctx)
{
pdfapp_warn(app, "Cannot load page");
errored = 1;
}
fz_try(app->ctx)
{
app->page_links = fz_load_links(app->doc, app->page);
}
fz_catch(app->ctx)
{
if (!errored)
pdfapp_warn(app, "Cannot load page");
}
app->errored = errored;
}
static void pdfapp_recreate_annotationslist(pdfapp_t *app)
{
fz_device *mdev = NULL;
int errored = 0;
fz_cookie cookie = { 0 };
fz_var(mdev);
if (app->annotations_list)
{
fz_free_display_list(app->ctx, app->annotations_list);
app->annotations_list = NULL;
}
fz_try(app->ctx)
{
fz_annot *annot;
/* Create display list */
app->annotations_list = fz_new_display_list(app->ctx);
mdev = fz_new_list_device(app->ctx, app->annotations_list);
for (annot = fz_first_annot(app->doc, app->page); annot; annot = fz_next_annot(app->doc, annot))
fz_run_annot(app->doc, app->page, annot, mdev, fz_identity, &cookie);
if (cookie.errors)
{
pdfapp_warn(app, "Errors found on page");
errored = 1;
}
}
fz_always(app->ctx)
{
fz_free_device(mdev);
}
fz_catch(app->ctx)
{
pdfapp_warn(app, "Cannot load page");
errored = 1;
}
app->errored = errored;
}
#define MAX_TITLE 256
static void pdfapp_updatepage(pdfapp_t *app)
{
fz_interactive *idoc = fz_interact(app->doc);
fz_device *idev;
fz_matrix ctm = pdfapp_viewctm(app);
fz_annot *annot;
fz_update_page(idoc, app->page);
pdfapp_recreate_annotationslist(app);
while ((annot = fz_poll_changed_annot(idoc, app->page)) != NULL)
{
fz_bbox bbox = fz_round_rect(fz_transform_rect(ctm, fz_bound_annot(app->doc, annot)));
fz_clear_pixmap_rect_with_value(app->ctx, app->image, 255, bbox);
idev = fz_new_draw_device_with_bbox(app->ctx, app->image, bbox);
if (app->page_list)
fz_run_display_list(app->page_list, idev, ctm, bbox, NULL);
if (app->annotations_list)
fz_run_display_list(app->annotations_list, idev, ctm, bbox, NULL);
fz_free_device(idev);
}
pdfapp_showpage(app, 0, 0, 1, 0);
}
static void pdfapp_showpage(pdfapp_t *app, int loadpage, int drawpage, int repaint, int transition)
{
char buf[MAX_TITLE];
fz_device *idev;
fz_device *tdev;
fz_colorspace *colorspace;
fz_matrix ctm;
fz_bbox bbox;
fz_cookie cookie = { 0 };
if (!app->nowaitcursor)
wincursor(app, WAIT);
if (!app->transitions_enabled || !app->presentation_mode)
transition = 0;
if (transition)
{
app->old_image = app->image;
app->image = NULL;
}
if (loadpage)
{
pdfapp_loadpage(app);
/* Zero search hit position */
app->hit = -1;
app->hitlen = 0;
/* Extract text */
app->page_sheet = fz_new_text_sheet(app->ctx);
app->page_text = fz_new_text_page(app->ctx, app->page_bbox);
if (app->page_list || app->annotations_list)
{
tdev = fz_new_text_device(app->ctx, app->page_sheet, app->page_text);
if (app->page_list)
fz_run_display_list(app->page_list, tdev, fz_identity, fz_infinite_bbox, &cookie);
if (app->annotations_list)
fz_run_display_list(app->annotations_list, tdev, fz_identity, fz_infinite_bbox, &cookie);
fz_free_device(tdev);
}
}
if (drawpage)
{
char buf2[64];
int len;
sprintf(buf2, " - %d/%d (%d dpi)",
app->pageno, app->pagecount, app->resolution);
len = MAX_TITLE-strlen(buf2);
if ((int)strlen(app->doctitle) > len)
{
snprintf(buf, len-3, "%s", app->doctitle);
strcat(buf, "...");
strcat(buf, buf2);
}
else
sprintf(buf, "%s%s", app->doctitle, buf2);
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->ctx, app->image);
if (app->grayscale)
colorspace = fz_device_gray;
else
colorspace = app->colorspace;
app->image = NULL;
app->image = fz_new_pixmap_with_bbox(app->ctx, colorspace, bbox);
fz_clear_pixmap_with_value(app->ctx, app->image, 255);
if (app->page_list || app->annotations_list)
{
idev = fz_new_draw_device(app->ctx, app->image);
if (app->page_list)
fz_run_display_list(app->page_list, idev, ctm, bbox, &cookie);
if (app->annotations_list)
fz_run_display_list(app->annotations_list, idev, ctm, bbox, &cookie);
fz_free_device(idev);
}
if (app->invert)
fz_invert_pixmap(app->ctx, app->image);
}
if (transition)
{
fz_transition *new_trans;
app->new_image = app->image;
app->image = NULL;
app->image = fz_new_pixmap_with_bbox(app->ctx, colorspace, bbox);
app->duration = 0;
new_trans = fz_page_presentation(app->doc, app->page, &app->duration);
if (new_trans)
app->transition = *new_trans;
else
{
/* If no transition specified, use a default one */
memset(&app->transition, 0, sizeof(*new_trans));
app->transition.duration = 1.0;
app->transition.type = FZ_TRANSITION_WIPE;
app->transition.vertical = 0;
app->transition.direction = 0;
}
if (app->duration == 0)
app->duration = 5;
app->in_transit = fz_generate_transition(app->image, app->old_image, app->new_image, 0, &app->transition);
if (!app->in_transit)
{
if (app->duration != 0)
winadvancetimer(app, app->duration);
}
app->start_time = clock();
}
if (repaint)
{
pdfapp_panview(app, app->panx, app->pany);
if (app->shrinkwrap)
{
int w = fz_pixmap_width(app->ctx, app->image);
int h = fz_pixmap_height(app->ctx, app->image);
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);
}
if (cookie.errors && app->errored == 0)
{
app->errored = 1;
pdfapp_warn(app, "Errors found on page. Page rendering may be incomplete.");
}
fz_flush_warnings(app->ctx);
}
static void pdfapp_gotouri(pdfapp_t *app, char *uri)
{
winopenuri(app, uri);
}
void pdfapp_gotopage(pdfapp_t *app, int number)
{
app->isediting = 0;
winrepaint(app);
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, 0);
}
static fz_text_char textcharat(fz_text_page *page, int idx)
{
static fz_text_char emptychar = { {0,0,0,0}, ' ' };
fz_text_block *block;
fz_text_line *line;
fz_text_span *span;
int ofs = 0;
for (block = page->blocks; block < page->blocks + page->len; block++)
{
for (line = block->lines; line < block->lines + block->len; line++)
{
for (span = line->spans; span < line->spans + line->len; span++)
{
if (idx < ofs + span->len)
return span->text[idx - ofs];
/* pseudo-newline */
if (span + 1 == line->spans + line->len)
{
if (idx == ofs + span->len)
return emptychar;
ofs++;
}
ofs += span->len;
}
}
}
return emptychar;
}
static int textlen(fz_text_page *page)
{
fz_text_block *block;
fz_text_line *line;
fz_text_span *span;
int len = 0;
for (block = page->blocks; block < page->blocks + page->len; block++)
{
for (line = block->lines; line < block->lines + block->len; line++)
{
for (span = line->spans; span < line->spans + line->len; span++)
len += span->len;
len++; /* pseudo-newline */
}
}
return len;
}
static inline int charat(fz_text_page *page, int idx)
{
return textcharat(page, idx).c;
}
static inline fz_bbox bboxcharat(fz_text_page *page, int idx)
{
return fz_bbox_covering_rect(textcharat(page, idx).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 int match(char *s, fz_text_page *page, int n)
{
int orig = n;
int c;
while ((c = *s++))
{
if (c == ' ' && charat(page, n) == ' ')
{
while (charat(page, n) == ' ')
n++;
}
else
{
if (tolower(c) != tolower(charat(page, 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, 0);
*panto = PAN_TO_TOP;
} while (app->pageno != startpage);
if (app->pageno == startpage)
pdfapp_warn(app, "String '%s' not found.", app->search);
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, 0);
*panto = PAN_TO_BOTTOM;
} while (app->pageno != startpage);
if (app->pageno == startpage)
pdfapp_warn(app, "String '%s' not found.", app->search);
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);
if (app->searchdir < 0)
{
if (app->pageno == 1)
app->pageno = app->pagecount;
else
app->pageno--;
pdfapp_showpage(app, 1, 1, 0, 0);
}
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 '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, 0);
break;
case '-':
app->resolution /= ZOOMSTEP;
if (app->resolution < MINRES)
app->resolution = MINRES;
pdfapp_showpage(app, 0, 1, 1, 0);
break;
case 'W':
app->resolution *= (double) app->winw / (double) fz_pixmap_width(app->ctx, app->image);
if (app->resolution > MAXRES)
app->resolution = MAXRES;
else if (app->resolution < MINRES)
app->resolution = MINRES;
pdfapp_showpage(app, 0, 1, 1, 0);
break;
case 'H':
app->resolution *= (double) app->winh / (double) fz_pixmap_height(app->ctx, app->image);
if (app->resolution > MAXRES)
app->resolution = MAXRES;
else if (app->resolution < MINRES)
app->resolution = MINRES;
pdfapp_showpage(app, 0, 1, 1, 0);
break;
case 'L':
app->rotate -= 90;
pdfapp_showpage(app, 0, 1, 1, 0);
break;
case 'R':
app->rotate += 90;
pdfapp_showpage(app, 0, 1, 1, 0);
break;
case 'c':
app->grayscale ^= 1;
pdfapp_showpage(app, 0, 1, 1, 0);
break;
case 'i':
app->invert ^= 1;
pdfapp_showpage(app, 0, 1, 1, 0);
break;
#ifndef NDEBUG
case 'a':
app->rotate -= 15;
pdfapp_showpage(app, 0, 1, 1, 0);
break;
case 's':
app->rotate += 15;
pdfapp_showpage(app, 0, 1, 1, 0);
break;
#endif
/*
* Pan view, but don't need to repaint image
*/
case 'f':
app->shrinkwrap = 0;
winfullscreen(app, !app->fullscreen);
app->fullscreen = !app->fullscreen;
break;
case 'w':
if (app->fullscreen)
{
winfullscreen(app, 0);
app->fullscreen = 0;
}
app->shrinkwrap = 1;
app->panx = app->pany = 0;
pdfapp_showpage(app, 0, 0, 1, 0);
break;
case 'h':
app->panx += fz_pixmap_width(app->ctx, app->image) / 10;
pdfapp_showpage(app, 0, 0, 1, 0);
break;
case 'j':
app->pany -= fz_pixmap_height(app->ctx, app->image) / 10;
pdfapp_showpage(app, 0, 0, 1, 0);
break;
case 'k':
app->pany += fz_pixmap_height(app->ctx, app->image) / 10;
pdfapp_showpage(app, 0, 0, 1, 0);
break;
case 'l':
app->panx -= fz_pixmap_width(app->ctx, app->image) / 10;
pdfapp_showpage(app, 0, 0, 1, 0);
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;
case 'p':
app->presentation_mode = !app->presentation_mode;
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':
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 -= 10;
break;
case '>':
panto = PAN_TO_TOP;
app->pageno += 10;
break;
/*
* Saving the file
*/
case 'S':
pdfapp_save(app);
break;
/*
* Reloading the file...
*/
case 'r':
panto = DONT_PAN;
oldpage = -1;
winreloadfile(app);
break;
/*
* Searching
*/
case '?':
app->isediting = 1;
app->searchdir = -1;
app->search[0] = 0;
app->hit = -1;
app->hitlen = 0;
winrepaintsearch(app);
break;
case '/':
app->isediting = 1;
app->searchdir = 1;
app->search[0] = 0;
app->hit = -1;
app->hitlen = 0;
winrepaintsearch(app);
break;
case 'n':
if (app->searchdir > 0)
pdfapp_searchforward(app, &panto);
else
pdfapp_searchbackward(app, &panto);
loadpage = 0;
break;
case 'N':
if (app->searchdir > 0)
pdfapp_searchbackward(app, &panto);
else
pdfapp_searchforward(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, 1);
}
}
void pdfapp_onmouse(pdfapp_t *app, int x, int y, int btn, int modifiers, int state)
{
fz_context *ctx = app->ctx;
fz_bbox rect = fz_pixmap_bbox(app->ctx, app->image);
fz_link *link;
fz_matrix ctm;
fz_point p;
int processed = 0;
p.x = x - app->panx + rect.x0;
p.y = y - app->pany + rect.y0;
ctm = pdfapp_viewctm(app);
ctm = fz_invert_matrix(ctm);
p = fz_transform_point(ctm, p);
if (btn == 1 && (state == 1 || state == -1))
{
fz_ui_event event;
fz_interactive *idoc = fz_interact(app->doc);
event.etype = FZ_EVENT_TYPE_POINTER;
event.event.pointer.pt = p;
if (state == 1)
event.event.pointer.ptype = FZ_POINTER_DOWN;
else /* state == -1 */
event.event.pointer.ptype = FZ_POINTER_UP;
if (idoc && fz_pass_event(idoc, app->page, &event))
{
fz_widget *widget;
widget = fz_focused_widget(idoc);
app->nowaitcursor = 1;
pdfapp_updatepage(app);
if (widget)
{
switch (fz_widget_get_type(widget))
{
case FZ_WIDGET_TYPE_TEXT:
{
char *text = fz_text_widget_text(idoc, widget);
char *current_text = text;
int retry = 0;
do
{
current_text = wintextinput(app, current_text, retry);
retry = 1;
}
while (current_text && !fz_text_widget_set_text(idoc, widget, current_text));
fz_free(app->ctx, text);
pdfapp_updatepage(app);
}
break;
case FZ_WIDGET_TYPE_LISTBOX:
case FZ_WIDGET_TYPE_COMBOBOX:
{
int nopts;
int nvals;
char **opts = NULL;
char **vals = NULL;
fz_var(opts);
fz_var(vals);
fz_try(ctx)
{
nopts = fz_choice_widget_options(idoc, widget, NULL);
opts = fz_malloc(ctx, nopts * sizeof(*opts));
(void)fz_choice_widget_options(idoc, widget, opts);
nvals = fz_choice_widget_value(idoc, widget, NULL);
vals = fz_malloc(ctx, MAX(nvals,nopts) * sizeof(*vals));
(void)fz_choice_widget_value(idoc, widget, vals);
if (winchoiceinput(app, nopts, opts, &nvals, vals))
{
fz_choice_widget_set_value(idoc, widget, nvals, vals);
pdfapp_updatepage(app);
}
}
fz_always(ctx)
{
fz_free(ctx, opts);
fz_free(ctx, vals);
}
fz_catch(ctx)
{
pdfapp_warn(app, "setting of choice failed");
}
}
break;
}
}
app->nowaitcursor = 0;
processed = 1;
}
}
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 && !processed)
{
if (link->dest.kind == FZ_LINK_URI)
pdfapp_gotouri(app, link->dest.ld.uri.uri);
else if (link->dest.kind == FZ_LINK_GOTO)
pdfapp_gotopage(app, link->dest.ld.gotor.page);
return;
}
}
else
{
fz_annot *annot;
for (annot = fz_first_annot(app->doc, app->page); annot; annot = fz_next_annot(app->doc, annot))
{
fz_rect rect = fz_bound_annot(app->doc, annot);
if (x >= rect.x0 && x < rect.x1)
if (y >= rect.y0 && y < rect.y1)
break;
}
if (annot)
wincursor(app, CARET);
else
wincursor(app, ARROW);
}
if (state == 1 && !processed)
{
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, 0);
}
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 = fz_mini(app->selx, x) - app->panx + rect.x0;
app->selr.x1 = fz_maxi(app->selx, x) - app->panx + rect.x0;
app->selr.y0 = fz_mini(app->sely, y) - app->pany + rect.y0;
app->selr.y1 = fz_maxi(app->sely, y) - app->pany + rect.y0;
winrepaint(app);
if (app->selr.x0 < app->selr.x1 && app->selr.y0 < app->selr.y1)
windocopy(app);
}
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 + fz_pixmap_height(app->ctx, app->image) < app->winh || newy > 0)
{
/* Yes. We can assume that deltay != 0 */
int deltay = y - app->sely;
/* Check whether the panning has occurred 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 threshold
*/
app->beyondy += deltay;
if (app->beyondy > BEYOND_THRESHHOLD)
{
if( app->pageno > 1 )
{
app->pageno--;
pdfapp_showpage(app, 1, 1, 1, 0);
newy = -fz_pixmap_height(app->ctx, app->image);
}
app->beyondy = 0;
}
else if (app->beyondy < -BEYOND_THRESHHOLD)
{
if( app->pageno < app->pagecount )
{
app->pageno++;
pdfapp_showpage(app, 1, 1, 1, 0);
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 = fz_mini(app->selx, x) - app->panx + rect.x0;
app->selr.x1 = fz_maxi(app->selx, x) - app->panx + rect.x0;
app->selr.y0 = fz_mini(app->sely, y) - app->pany + rect.y0;
app->selr.y1 = fz_maxi(app->sely, y) - app->pany + rect.y0;
winrepaint(app);
}
}
void pdfapp_oncopy(pdfapp_t *app, unsigned short *ucsbuf, int ucslen)
{
fz_bbox hitbox;
fz_matrix ctm;
fz_text_page *page = app->page_text;
fz_text_block *block;
fz_text_line *line;
fz_text_span *span;
int c, i, p;
int seen = 0;
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 (block = page->blocks; block < page->blocks + page->len; block++)
{
for (line = block->lines; line < block->lines + block->len; line++)
{
for (span = line->spans; span < line->spans + line->len; span++)
{
if (seen)
{
#ifdef _WIN32
if (p < ucslen - 1)
ucsbuf[p++] = '\r';
#endif
if (p < ucslen - 1)
ucsbuf[p++] = '\n';
}
seen = 0;
for (i = 0; i < span->len; i++)
{
hitbox = fz_bbox_covering_rect(span->text[i].bbox);
hitbox = fz_transform_bbox(ctm, hitbox);
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;
}
}
seen = (seen && span + 1 == line->spans + line->len);
}
}
}
ucsbuf[p] = 0;
}
void pdfapp_postblit(pdfapp_t *app)
{
clock_t time;
float seconds;
int llama;
app->transitions_enabled = 1;
if (!app->in_transit)
return;
time = clock();
seconds = (float)(time - app->start_time) / CLOCKS_PER_SEC;
llama = seconds * 256 / app->transition.duration;
if (llama >= 256)
{
/* Completed. */
app->in_transit = 0;
fz_drop_pixmap(app->ctx, app->image);
app->image = app->new_image;
app->new_image = NULL;
fz_drop_pixmap(app->ctx, app->old_image);
app->old_image = NULL;
if (app->duration != 0)
winadvancetimer(app, app->duration);
}
else
fz_generate_transition(app->image, app->old_image, app->new_image, llama, &app->transition);
winrepaint(app);
}
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