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getPageLinks implementation for mupdf #72

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This is rough first draft, and provides just dump of all links
available on pdf page. Binding to Shift+L is temporary and just for
debugging!
This commit is contained in:
Dobrica Pavlinusic
2012-09-21 13:28:13 +02:00
parent e1fc748faf
commit 71ff602cd5
3 changed files with 79 additions and 0 deletions
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54
pdf.c
View File

@@ -577,6 +577,59 @@ static int cleanCache(lua_State *L) {
return 0;
}
static int getPageLinks(lua_State *L) {
fz_link *page_links;
fz_link *link;
int link_count;
PdfPage *page = (PdfPage*) luaL_checkudata(L, 1, "pdfpage");
page_links = fz_load_links(page->doc->xref, page->page); // page->doc->xref?
lua_newtable(L); // all links
link_count = 0;
for (link = page_links; link; link = link->next) {
lua_newtable(L); // new link
lua_pushstring(L, "x0");
lua_pushinteger(L, link->rect.x0);
lua_settable(L, -3);
lua_pushstring(L, "y0");
lua_pushinteger(L, link->rect.y0);
lua_settable(L, -3);
lua_pushstring(L, "x1");
lua_pushinteger(L, link->rect.x1);
lua_settable(L, -3);
lua_pushstring(L, "y1");
lua_pushinteger(L, link->rect.y1);
lua_settable(L, -3);
if (link->dest.kind == FZ_LINK_URI) {
lua_pushstring(L, "uri");
lua_pushstring(L, link->dest.ld.uri.uri);
lua_settable(L, -3);
} else if (link->dest.kind == FZ_LINK_GOTO) {
lua_pushstring(L, "page");
lua_pushinteger(L, link->dest.ld.gotor.page); // FIXME page+1?
lua_settable(L, -3);
} else {
printf("ERROR: unkown link kind: %x", link->dest.kind);
}
lua_rawseti(L, -2, ++link_count);
}
printf("## getPageLinks found %d links in document", link_count);
fz_drop_link(page->doc->context, page_links);
return 1;
}
static const struct luaL_Reg pdf_func[] = {
{"openDocument", openDocument},
{NULL, NULL}
@@ -599,6 +652,7 @@ static const struct luaL_Reg pdfpage_meth[] = {
{"getSize", getPageSize},
{"getUsedBBox", getUsedBBox},
{"getPageText", getPageText},
{"getPageLinks", getPageLinks},
{"close", closePage},
{"__gc", closePage},
{"draw", drawPage},

13
pdfreader.lua
View File

@@ -45,3 +45,16 @@ function PDFReader:getText(pageno)
page:close()
return text
end
function PDFReader:getPageLinks(pageno)
local ok, page = pcall(self.doc.openPage, self.doc, pageno)
if not ok then
-- TODO: error handling
return nil
end
local links = page:getPageLinks()
Debug("## page:getPageLinks ", links)
page:close()
return links
end

12
unireader.lua
View File

@@ -2062,6 +2062,11 @@ function UniReader:searchHighLight(search)
end
function UniReader:getPageLinks(pageno)
Debug("getPageLinks not supported in this format")
return nil
end
-- used in UniReader:showMenu()
function UniReader:_drawReadingInfo()
local width, height = G_width, G_height
@@ -2855,6 +2860,13 @@ function UniReader:addAllCommands()
end
end
)
self.commands:add(KEY_L, MOD_SHIFT, "L",
"page links",
function(unireader)
Debug("unireader", unireader)
unireader:getPageLinks( unireader.pageno )
end
)
self.commands:add(KEY_BACK,MOD_ALT,"Back",
"close document",
function(unireader)