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cre.cpp
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cre.cpp
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/*
KindlePDFViewer: CREngine abstraction for Lua
Copyright (C) 2012 Hans-Werner Hilse <[email protected]>
Qingping Hou <[email protected]>
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef DEBUG_CRENGINE
#define DEBUG_CRENGINE 0
#endif
extern "C" {
#include "blitbuffer.h"
#include "drawcontext.h"
#include "cre.h"
}
#include "crengine.h"
#include "lvdocview.h"
#include "lvimg.h"
static void replaceColor( char * str, lUInt32 color ) {
// in line like "0 c #80000000",
// replace value of color
for ( int i=0; i<8; i++ ) {
str[i+5] = toHexDigit((color>>28) & 0xF);
color <<= 4;
}
}
/// set list of battery icons to display battery state
static LVRefVec<LVImageSource> getBatteryIcons(lUInt32 color) {
CRLog::debug("Making list of Battery icon bitmats");
lUInt32 cl1 = 0x00000000|(color&0xFFFFFF);
lUInt32 cl2 = 0x40000000|(color&0xFFFFFF);
lUInt32 cl3 = 0x80000000|(color&0xFFFFFF);
lUInt32 cl4 = 0xF0000000|(color&0xFFFFFF);
static char color1[] = "0 c #80000000";
static char color2[] = "X c #80000000";
static char color3[] = "o c #80AAAAAA";
static char color4[] = ". c #80FFFFFF";
#define BATTERY_HEADER \
"28 15 5 1", \
color1, \
color2, \
color3, \
color4, \
" c None",
static const char * battery8[] = {
BATTERY_HEADER
" .........................",
" .00000000000000000000000.",
" .0.....................0.",
"....0.XXXX.XXXX.XXXX.XXXX.0.",
".0000.XXXX.XXXX.XXXX.XXXX.0.",
".0..0.XXXX.XXXX.XXXX.XXXX.0.",
".0..0.XXXX.XXXX.XXXX.XXXX.0.",
".0..0.XXXX.XXXX.XXXX.XXXX.0.",
".0..0.XXXX.XXXX.XXXX.XXXX.0.",
".0..0.XXXX.XXXX.XXXX.XXXX.0.",
".0000.XXXX.XXXX.XXXX.XXXX.0.",
"....0.XXXX.XXXX.XXXX.XXXX.0.",
" .0.....................0.",
" .00000000000000000000000.",
" .........................",
};
static const char * battery7[] = {
BATTERY_HEADER
" .........................",
" .00000000000000000000000.",
" .0.....................0.",
"....0.oooo.XXXX.XXXX.XXXX.0.",
".0000.oooo.XXXX.XXXX.XXXX.0.",
".0..0.oooo.XXXX.XXXX.XXXX.0.",
".0..0.oooo.XXXX.XXXX.XXXX.0.",
".0..0.oooo.XXXX.XXXX.XXXX.0.",
".0..0.oooo.XXXX.XXXX.XXXX.0.",
".0..0.oooo.XXXX.XXXX.XXXX.0.",
".0000.oooo.XXXX.XXXX.XXXX.0.",
"....0.oooo.XXXX.XXXX.XXXX.0.",
" .0.....................0.",
" .00000000000000000000000.",
" .........................",
};
static const char * battery6[] = {
BATTERY_HEADER
" .........................",
" .00000000000000000000000.",
" .0.....................0.",
"....0......XXXX.XXXX.XXXX.0.",
".0000......XXXX.XXXX.XXXX.0.",
".0..0......XXXX.XXXX.XXXX.0.",
".0..0......XXXX.XXXX.XXXX.0.",
".0..0......XXXX.XXXX.XXXX.0.",
".0..0......XXXX.XXXX.XXXX.0.",
".0..0......XXXX.XXXX.XXXX.0.",
".0000......XXXX.XXXX.XXXX.0.",
"....0......XXXX.XXXX.XXXX.0.",
" .0.....................0.",
" .00000000000000000000000.",
" .........................",
};
static const char * battery5[] = {
BATTERY_HEADER
" .........................",
" .00000000000000000000000.",
" .0.....................0.",
"....0......oooo.XXXX.XXXX.0.",
".0000......oooo.XXXX.XXXX.0.",
".0..0......oooo.XXXX.XXXX.0.",
".0..0......oooo.XXXX.XXXX.0.",
".0..0......oooo.XXXX.XXXX.0.",
".0..0......oooo.XXXX.XXXX.0.",
".0..0......oooo.XXXX.XXXX.0.",
".0000......oooo.XXXX.XXXX.0.",
"....0......oooo.XXXX.XXXX.0.",
" .0.....................0.",
" .00000000000000000000000.",
" .........................",
};
static const char * battery4[] = {
BATTERY_HEADER
" .........................",
" .00000000000000000000000.",
" .0.....................0.",
"....0...........XXXX.XXXX.0.",
".0000...........XXXX.XXXX.0.",
".0..0...........XXXX.XXXX.0.",
".0..0...........XXXX.XXXX.0.",
".0..0...........XXXX.XXXX.0.",
".0..0...........XXXX.XXXX.0.",
".0..0...........XXXX.XXXX.0.",
".0000...........XXXX.XXXX.0.",
"....0...........XXXX.XXXX.0.",
" .0.....................0.",
" .00000000000000000000000.",
" .........................",
};
static const char * battery3[] = {
BATTERY_HEADER
" .........................",
" .00000000000000000000000.",
" .0.....................0.",
"....0...........oooo.XXXX.0.",
".0000...........oooo.XXXX.0.",
".0..0...........oooo.XXXX.0.",
".0..0...........oooo.XXXX.0.",
".0..0...........oooo.XXXX.0.",
".0..0...........oooo.XXXX.0.",
".0..0...........oooo.XXXX.0.",
".0000...........oooo.XXXX.0.",
"....0...........oooo.XXXX.0.",
" .0.....................0.",
" .00000000000000000000000.",
" .........................",
};
static const char * battery2[] = {
BATTERY_HEADER
" .........................",
" .00000000000000000000000.",
" .0.....................0.",
"....0................XXXX.0.",
".0000................XXXX.0.",
".0..0................XXXX.0.",
".0..0................XXXX.0.",
".0..0................XXXX.0.",
".0..0................XXXX.0.",
".0..0................XXXX.0.",
".0000................XXXX.0.",
"....0................XXXX.0.",
" .0.....................0.",
" .00000000000000000000000.",
" .........................",
};
static const char * battery1[] = {
BATTERY_HEADER
" .........................",
" .00000000000000000000000.",
" .0.....................0.",
" .0................oooo.0.",
".0000................oooo.0.",
".0..0................oooo.0.",
".0..0................oooo.0.",
".0..0................oooo.0.",
".0..0................oooo.0.",
".0..0................oooo.0.",
".0000................oooo.0.",
" .0................oooo.0.",
" .0.....................0.",
" .00000000000000000000000.",
" .........................",
};
static const char * battery0[] = {
BATTERY_HEADER
" .........................",
" .00000000000000000000000.",
" .0.....................0.",
" .0.....................0.",
".0000.....................0.",
".0..0.....................0.",
".0..0.....................0.",
".0..0.....................0.",
".0..0.....................0.",
".0..0.....................0.",
".0000.....................0.",
"....0.....................0.",
" .0.....................0.",
" .00000000000000000000000.",
" .........................",
};
//#endif
static const char * battery_charge[] = {
BATTERY_HEADER
" .........................",
" .00000000000000000000000.",
" .0.....................0.",
"....0.....................0.",
".0000............XX.......0.",
".0..0...........XXXX......0.",
".0..0..XX......XXXXXX.....0.",
".0..0...XXX...XXXX..XX....0.",
".0..0....XXX..XXXX...XX...0.",
".0..0.....XXXXXXX.....XX..0.",
".0000.......XXXX..........0.",
"....0........XX...........0.",
" .0.....................0.",
" .00000000000000000000000.",
" .........................",
};
static const char * battery_frame[] = {
BATTERY_HEADER
" .........................",
" .00000000000000000000000.",
" .0.....................0.",
"....0.....................0.",
".0000.....................0.",
".0..0.....................0.",
".0..0.....................0.",
".0..0.....................0.",
".0..0.....................0.",
".0..0.....................0.",
".0000.....................0.",
"....0.....................0.",
" .0.....................0.",
" .00000000000000000000000.",
" .........................",
};
const char * * icon_bpm[] = {
battery_charge,
battery0,
battery1,
battery2,
battery3,
battery4,
battery5,
battery6,
battery7,
battery8,
battery_frame,
NULL
};
replaceColor( color1, cl1 );
replaceColor( color2, cl2 );
replaceColor( color3, cl3 );
replaceColor( color4, cl4 );
LVRefVec<LVImageSource> icons;
for ( int i=0; icon_bpm[i]; i++ ) {
icons.add(LVCreateXPMImageSource( icon_bpm[i] ));
}
return icons;
}
// Single global object to handle callbacks from crengine to Lua
class CreCallbackForwarder : public LVDocViewCallback
{
bool _active;
lua_State * _L; // stack (of the coroutine) that set the callback
// References in the Lua registry, to prevent these objects to be gc()'ed
int _r_L; // ref to L, to prevent it from being gc'ed when coroutine ends
int _r_cb; // ref to provided Lua function to be forwarded crengine events
public:
CreCallbackForwarder() :
_active(false),
// As a crengine document is opened from inside a coroutine, but can be closed
// from the main thread, and as Lua 5.1 does not provide access to the main thread
// from a coroutine, we need to store the coroutine lua_State to keep a reference
// to it and prevent if from being gc'ed.
// Fortunatly, the registry index is shared by the main thread and all coroutines
_L(NULL),
_r_L(LUA_NOREF),
_r_cb(LUA_NOREF)
{ }
void setCallback(lua_State *L) {
// Cleanup any previous references
unsetCallback(L);
// Get and keep reference to the callback (first on the stack)
_r_cb = luaL_ref(L, LUA_REGISTRYINDEX);
// printf("CreCallbackForwarder._r_cb = %x\n", _r_cb);
// Push current coroutine/thread (L) onto the stack, and keep a reference to it,
// so it does not get gc'ed when our coroutine exits
lua_pushthread(L);
_r_L = luaL_ref(L, LUA_REGISTRYINDEX);
// printf("CreCallbackForwarder._r_L = %x\n", _r_L);
_L = L; // Store L, so we can fetch the callback from _r_cb
_active = true;
}
void unsetCallback(lua_State *L) {
_active = false;
if (_r_cb != LUA_NOREF) {
luaL_unref(L, LUA_REGISTRYINDEX, _r_cb);
_r_cb = LUA_NOREF;
}
if (_r_L != LUA_NOREF) {
luaL_unref(L, LUA_REGISTRYINDEX, _r_L);
_r_L = LUA_NOREF;
}
_L = NULL;
}
void callback(const char * event) {
if (!_active)
return;
lua_rawgeti(_L, LUA_REGISTRYINDEX, _r_cb);
lua_pushstring(_L, event);
lua_pcall(_L, 1, 0, 0);
}
void callback(const char * event, int number) {
if (!_active)
return;
lua_rawgeti(_L, LUA_REGISTRYINDEX, _r_cb);
lua_pushstring(_L, event);
lua_pushnumber(_L, number);
lua_pcall(_L, 2, 0, 0);
}
void callback(const char * event, const char * str) {
if (!_active)
return;
lua_rawgeti(_L, LUA_REGISTRYINDEX, _r_cb);
lua_pushstring(_L, event);
lua_pushstring(_L, str);
lua_pcall(_L, 2, 0, 0);
}
virtual void OnLoadFileStart( lString16 filename ) {
callback("OnLoadFileStart", UnicodeToLocal(filename).c_str());
}
virtual void OnLoadFileFormatDetected( doc_format_t fileFormat) {
callback("OnLoadFileFormatDetected", UnicodeToLocal(getDocFormatName(fileFormat)).c_str());
}
virtual void OnLoadFileProgress( int percent) {
callback("OnLoadFileProgress", percent);
}
virtual void OnLoadFileEnd() {
callback("OnLoadFileEnd");
}
virtual void OnLoadFileError(lString16 message) {
callback("OnLoadFileError", UnicodeToLocal(message).c_str());
}
virtual void OnNodeStylesUpdateStart() {
callback("OnNodeStylesUpdateStart");
}
virtual void OnNodeStylesUpdateProgress(int percent) {
callback("OnNodeStylesUpdateProgress", percent);
}
virtual void OnNodeStylesUpdateEnd() {
callback("OnNodeStylesUpdateEnd");
}
virtual void OnFormatStart() {
callback("OnFormatStart");
}
virtual void OnFormatProgress(int percent) {
callback("OnFormatProgress", percent);
}
virtual void OnFormatEnd() {
callback("OnFormatEnd");
}
virtual void OnDocumentReady() {
callback("OnDocumentReady");
}
virtual void OnSaveCacheFileStart() {
callback("OnSaveCacheFileStart");
}
virtual void OnSaveCacheFileProgress(int percent) {
callback("OnSaveCacheFileProgress", percent);
}
virtual void OnSaveCacheFileEnd() {
callback("OnSaveCacheFileEnd");
}
// virtual void OnLoadFileFirstPagesReady() { } // useless
// virtual void OnExportProgress(int percent) { } // Export to WOL format
// virtual void OnExternalLink(lString16 /*url*/, ldomNode * /*node*/) { }
// virtual void OnImageCacheClear() { }
// virtual bool OnRequestReload() { return false; }
};
CreCallbackForwarder * cre_callback_forwarder = NULL;
typedef struct CreDocument {
LVDocView *text_view;
ldomDocument *dom_doc;
} CreDocument;
static int setCallback(lua_State *L) {
CreDocument *doc = (CreDocument*) luaL_checkudata(L, 1, "credocument");
if ( cre_callback_forwarder == NULL ) {
cre_callback_forwarder = new CreCallbackForwarder();
}
if (lua_isfunction(L, 2)) {
cre_callback_forwarder->setCallback(L);
doc->text_view->setCallback(cre_callback_forwarder);
}
else {
doc->text_view->setCallback(NULL);
cre_callback_forwarder->unsetCallback(L);
}
return 0;
}
static int initCache(lua_State *L) {
const char *cache_path = luaL_checkstring(L, 1);
int cache_size = luaL_checkint(L, 2);
bool compress_cached_data = true;
if (lua_isboolean(L, 3)) {
compress_cached_data = lua_toboolean(L, 3);
}
float storage_max_uncompressed_size_factor = (float)luaL_optnumber(L, 4, 1.0);
// Setting this to false uses more disk space for cache,
// but speed up rendering and page turns quite a bit
compressCachedData(compress_cached_data);
// Increase the 4 hardcoded TEXT_CACHE_UNPACKED_SPACE, ELEM_CACHE_UNPACKED_SPACE,
// RECT_CACHE_UNPACKED_SPACE and STYLE_CACHE_UNPACKED_SPACE by this factor
setStorageMaxUncompressedSizeFactor(storage_max_uncompressed_size_factor);
ldomDocCache::init(lString16(cache_path), cache_size);
return 0;
}
static int initHyphDict(lua_State *L) {
const char *dict_path = luaL_checkstring(L, 1);
HyphMan::initDictionaries(lString16(dict_path));
return 0;
}
static int newDocView(lua_State *L) {
int width = luaL_checkint(L, 1);
int height = luaL_checkint(L, 2);
LVDocViewMode view_mode = (LVDocViewMode)luaL_checkint(L, 3);
CreDocument *doc = (CreDocument*) lua_newuserdata(L, sizeof(CreDocument));
luaL_getmetatable(L, "credocument");
lua_setmetatable(L, -2);
doc->text_view = new LVDocView(-1, true); // bitsPerPixel=-1, noDefaultDocument=true
//doc->text_view->setBackgroundColor(0xFFFFFF);
//doc->text_view->setTextColor(0x000000);
//doc->text_view->doCommand(DCMD_SET_DOC_FONTS, 1);
//doc->text_view->doCommand(DCMD_SET_INTERNAL_STYLES, 1);
doc->text_view->setViewMode(view_mode, -1);
doc->text_view->Resize(width, height);
doc->text_view->setPageHeaderInfo(PGHDR_AUTHOR|PGHDR_TITLE|PGHDR_PAGE_NUMBER|PGHDR_PAGE_COUNT|PGHDR_CHAPTER_MARKS|PGHDR_CLOCK);
doc->text_view->setBatteryIcons(getBatteryIcons(0x000000));
return 1;
}
static int readDefaults(lua_State *L) {
// This is to be called only when the document is opened to be
// read by ReaderUI - not when the document is opened to just
// get its metadata or cover image - as it will affect some
// crengine global variables and state, whose change would
// affect the currently opened for reading document.
CreDocument *doc = (CreDocument*) luaL_checkudata(L, 1, "credocument");
// it will overwrite all settings by values found in ./data/cr3.ini
CRPropRef props = doc->text_view->propsGetCurrent();
LVStreamRef stream = LVOpenFileStream("data/cr3.ini", LVOM_READ);
if ( !stream.isNull() && props->loadFromStream(stream.get()) ) {
doc->text_view->propsApply(props);
} else {
// Tweak the default settings to be slightly less random
props->setString(PROP_FALLBACK_FONT_FACE, "Noto Sans CJK SC");
props->setString(PROP_HYPHENATION_DICT, "English_US.pattern");
props->setString(PROP_STATUS_FONT_FACE, "Noto Sans");
props->setString(PROP_FONT_FACE, "Noto Serif");
// Note: the values we set here don't really matter, they will
// be re-set/overridden by readerfont.lua on each book load
props->setInt(PROP_FONT_HINTING, 2); // autohint, to be conservative (some ttf fonts' bytecode is truly crappy)
props->setInt(PROP_FONT_KERNING, 3); // harfbuzz (slower than freetype kerning, but needed for proper arabic)
// props->setInt(PROP_FONT_KERNING_ENABLED, 1);
props->setString("styles.pre.font-face", "font-family: \"Droid Sans Mono\"");
stream = LVOpenFileStream("data/cr3.ini", LVOM_WRITE);
props->saveToStream(stream.get());
}
return 0;
}
static int saveDefaults(lua_State *L) {
CreDocument *doc = (CreDocument*) luaL_checkudata(L, 1, "credocument");
CRPropRef props = doc->text_view->propsGetCurrent();
LVStreamRef stream = LVOpenFileStream("data/cr3.ini", LVOM_WRITE);
return props->saveToStream(stream.get());
}
static int getLatestDomVersion(lua_State *L) {
lua_pushnumber(L, gDOMVersionCurrent);
return 1;
}
static int getDomVersionWithNormalizedXPointers(lua_State *L) {
lua_pushnumber(L, DOM_VERSION_WITH_NORMALIZED_XPOINTERS); // defined in lvtinydom.h
return 1;
}
static int getIntProperty(lua_State *L) {
CreDocument *doc = (CreDocument*) luaL_checkudata(L, 1, "credocument");
const char *propName = luaL_checkstring(L, 2);
int value;
CRPropRef props = doc->text_view->propsGetCurrent();
props->getInt(propName, value);
lua_pushinteger(L, value);
return 1;
}
static int setIntProperty(lua_State *L) {
CreDocument *doc = (CreDocument*) luaL_checkudata(L, 1, "credocument");
const char *propName = luaL_checkstring(L, 2);
int value = luaL_checkint(L, 3);
CRPropRef props = LVCreatePropsContainer();
props->setInt(propName, value);
doc->text_view->propsApply(props);
return 0;
}
static int getStringProperty(lua_State *L) {
CreDocument *doc = (CreDocument*) luaL_checkudata(L, 1, "credocument");
const char *propName = luaL_checkstring(L, 2);
lString16 value;
CRPropRef props = doc->text_view->propsGetCurrent();
props->getString(propName, value);
lua_pushstring(L, UnicodeToLocal(value).c_str());
return 1;
}
static int setStringProperty(lua_State *L) {
CreDocument *doc = (CreDocument*) luaL_checkudata(L, 1, "credocument");
const char *propName = luaL_checkstring(L, 2);
const char *value = luaL_checkstring(L, 3);
CRPropRef props = LVCreatePropsContainer();
props->setString(propName, value);
doc->text_view->propsApply(props);
return 0;
}
static int getGammaLevel(lua_State *L) {
lua_pushnumber(L, fontMan->GetGamma());
return 1;
}
static int getGammaIndex(lua_State *L) {
lua_pushinteger(L, fontMan->GetGammaIndex());
return 1;
}
static int setGammaIndex(lua_State *L) {
int index = luaL_checkint(L, 1);
fontMan->SetGammaIndex(index);
return 0;
}
static int getHyphDictList(lua_State *L) {
lua_newtable(L);
HyphDictionaryList *list = HyphMan::getDictList();
for(int i = 0; i < list->length(); i++) {
lua_pushnumber(L, i+1);
lua_pushstring(L, UnicodeToLocal(list->get(i)->getId()).c_str());
lua_settable(L, -3);
}
return 1;
}
static int getSelectedHyphDict(lua_State *L) {
lua_pushstring(L, UnicodeToLocal(HyphMan::getSelectedDictionary()->getId()).c_str());
lua_pushnumber(L, TextLangMan::getMainLangHyphMethod()->getLeftHyphenMin());
lua_pushnumber(L, TextLangMan::getMainLangHyphMethod()->getRightHyphenMin());
return 3;
}
static int setHyphDictionary(lua_State *L) {
const char *id = luaL_checkstring(L, 1);
HyphMan::getDictList()->activate((lString16)id);
return 0;
}
static int getTextLangStatus(lua_State *L) {
lua_pushstring(L, UnicodeToLocal(TextLangMan::getMainLang()).c_str());
lua_pushstring(L, UnicodeToLocal(TextLangMan::getMainLangHyphMethod()->getId()).c_str());
lua_newtable(L);
LVPtrVector<TextLangCfg> *list = TextLangMan::getLangCfgList();
for(int i = 0; i < list->length(); i++) {
TextLangCfg * lang_cfg = list->get(i);
// Key
lua_pushstring(L, UnicodeToLocal(lang_cfg->getLangTag()).c_str());
// Value: table
lua_newtable(L);
lua_pushstring(L, "hyph_dict_name");
lua_pushstring(L, UnicodeToLocal(lang_cfg->getDefaultHyphMethod()->getId()).c_str());
lua_settable(L, -3);
lua_pushstring(L, "hyph_nb_patterns");
lua_pushinteger(L, lang_cfg->getDefaultHyphMethod()->getCount());
lua_settable(L, -3);
lua_pushstring(L, "hyph_mem_size");
lua_pushinteger(L, lang_cfg->getDefaultHyphMethod()->getSize());
lua_settable(L, -3);
lua_settable(L, -3);
}
return 3;
}
static int loadDocument(lua_State *L) {
CreDocument *doc = (CreDocument*) luaL_checkudata(L, 1, "credocument");
const char *file_name = luaL_checkstring(L, 2);
bool only_metadata = false;
if (lua_isboolean(L, 3)) {
only_metadata = lua_toboolean(L, 3);
}
doc->text_view->LoadDocument(file_name, only_metadata);
doc->dom_doc = doc->text_view->getDocument();
bool loaded = false;
if (doc->dom_doc) { loaded = true ;}
lua_pushboolean(L, loaded);
return 1;
}
static int renderDocument(lua_State *L) {
CreDocument *doc = (CreDocument*) luaL_checkudata(L, 1, "credocument");
doc->text_view->Render();
return 0;
}
static int closeDocument(lua_State *L) {
CreDocument *doc = (CreDocument*) luaL_checkudata(L, 1, "credocument");
/* should be save if called twice */
if(doc->text_view != NULL) {
// Call close() to have the cache explicitely saved now
// while we still have a callback (to show its progress).
doc->text_view->close();
// Remove any callback
if (cre_callback_forwarder) {
doc->text_view->setCallback(NULL);
cre_callback_forwarder->unsetCallback(L);
}
delete doc->text_view;
doc->text_view = NULL;
}
return 0;
}
static int isBuiltDomStale(lua_State *L) {
CreDocument *doc = (CreDocument*) luaL_checkudata(L, 1, "credocument");
lua_pushboolean(L, doc->dom_doc->isBuiltDomStale());
return 1;
}
static int hasCacheFile(lua_State *L) {
CreDocument *doc = (CreDocument*) luaL_checkudata(L, 1, "credocument");
lua_pushboolean(L, doc->dom_doc->hasCacheFile());
return 1;
}
static int invalidateCacheFile(lua_State *L) {
CreDocument *doc = (CreDocument*) luaL_checkudata(L, 1, "credocument");
doc->dom_doc->invalidateCacheFile();
return 0;
}
static int getCacheFilePath(lua_State *L) {
CreDocument *doc = (CreDocument*) luaL_checkudata(L, 1, "credocument");
lString16 cache_path = doc->dom_doc->getCacheFilePath();
if (cache_path.empty())
return 0;
lua_pushstring(L, UnicodeToLocal(cache_path).c_str());
return 1;
}
static int getStatistics(lua_State *L) {
CreDocument *doc = (CreDocument*) luaL_checkudata(L, 1, "credocument");
lString16 stats = doc->dom_doc->getStatistics();
lua_pushstring(L, UnicodeToLocal(stats).c_str());
return 1;
}
static int getUnknownEntities(lua_State *L) {
CreDocument *doc = (CreDocument*) luaL_checkudata(L, 1, "credocument");
lString16Collection unknown_entities = doc->dom_doc->getUnknownEntities();
lua_pushstring(L, UnicodeToLocal(unknown_entities[0]).c_str());
lua_pushstring(L, UnicodeToLocal(unknown_entities[1]).c_str());
lua_pushstring(L, UnicodeToLocal(unknown_entities[2]).c_str());
return 3;
}
static int getDocumentFormat(lua_State *L) {
CreDocument *doc = (CreDocument*) luaL_checkudata(L, 1, "credocument");
lString16 docformat = getDocFormatName(doc->text_view->getDocFormat());
lua_pushstring(L, UnicodeToLocal(docformat).c_str());
return 1;
}
static int getDocumentProps(lua_State *L) {
CreDocument *doc = (CreDocument*) luaL_checkudata(L, 1, "credocument");
lua_newtable(L);
lua_pushstring(L, "title");
lua_pushstring(L, UnicodeToLocal(doc->text_view->getTitle()).c_str());
lua_settable(L, -3);
lua_pushstring(L, "authors");
lua_pushstring(L, UnicodeToLocal(doc->text_view->getAuthors()).c_str());
lua_settable(L, -3);
lua_pushstring(L, "language");
lua_pushstring(L, UnicodeToLocal(doc->text_view->getLanguage()).c_str());
lua_settable(L, -3);
lua_pushstring(L, "series");
lua_pushstring(L, UnicodeToLocal(doc->text_view->getSeries()).c_str());
lua_settable(L, -3);
lua_pushstring(L, "description");
lua_pushstring(L, UnicodeToLocal(doc->text_view->getDescription()).c_str());
lua_settable(L, -3);
lua_pushstring(L, "keywords");
lua_pushstring(L, UnicodeToLocal(doc->text_view->getKeywords()).c_str());
lua_settable(L, -3);
return 1;
}
static int getNumberOfPages(lua_State *L) {
CreDocument *doc = (CreDocument*) luaL_checkudata(L, 1, "credocument");
lua_pushinteger(L, doc->text_view->getPageCount());
return 1;
}
static int getCurrentPage(lua_State *L) {
CreDocument *doc = (CreDocument*) luaL_checkudata(L, 1, "credocument");
lua_pushinteger(L, doc->text_view->getCurPage()+1);
return 1;
}
static int getPageFromXPointer(lua_State *L) {
CreDocument *doc = (CreDocument*) luaL_checkudata(L, 1, "credocument");
const char *xpointer_str = luaL_checkstring(L, 2);
int page = 1;
ldomXPointer xp = doc->dom_doc->createXPointer(lString16(xpointer_str));
if ( !xp.isNull() ) { // Found in document
// Ensure xp points to a visible node that has a y in the document.
// If it is invisible, get the next visible node
ldomXPointerEx xpe = xp;
if ( xpe.isText() )
xpe.parent();
if ( xpe.getNode()->getRendMethod() == erm_invisible ) {
xpe = xp;
while ( xpe.nextElement() ) {
if ( xpe.getNode()->getRendMethod() != erm_invisible ) {
xp = xpe;
break;
}
}
}
page = doc->text_view->getBookmarkPage(xp) + 1;
}
lua_pushinteger(L, page);
return 1;
}
static int getPosFromXPointer(lua_State *L) {
CreDocument *doc = (CreDocument*) luaL_checkudata(L, 1, "credocument");
const char *xpointer_str = luaL_checkstring(L, 2);
int y = 0;
int x = 0;
ldomXPointer xp = doc->dom_doc->createXPointer(lString16(xpointer_str));
if ( !xp.isNull() ) { // Found in document
// Ensure xp points to a visible node that has a y in the document.
// If it is invisible, get the next visible node
ldomXPointerEx xpe = xp;
if ( xpe.isText() )
xpe.parent();
if ( xpe.getNode()->getRendMethod() == erm_invisible ) {
xpe = xp;
while ( xpe.nextElement() ) {
if ( xpe.getNode()->getRendMethod() != erm_invisible ) {
xp = xpe;
break;
}
}
}
lvPoint pt = xp.toPoint(true); // extended=true, for better accuracy
if (pt.y > 0) {
y = pt.y;
}
x = pt.x;
}
lua_pushinteger(L, y);
// Also returns the x value (as the 2nd returned value, as its
// less interesting to current code than the y value)
lua_pushinteger(L, x);
return 2;
}
static int getCurrentPos(lua_State *L) {
CreDocument *doc = (CreDocument*) luaL_checkudata(L, 1, "credocument");
lua_pushinteger(L, doc->text_view->GetPos());
return 1;
}
static int getCurrentPercent(lua_State *L) {
CreDocument *doc = (CreDocument*) luaL_checkudata(L, 1, "credocument");
lua_pushinteger(L, doc->text_view->getPosPercent());
return 1;
}
static int getXPointer(lua_State *L) {
CreDocument *doc = (CreDocument*) luaL_checkudata(L, 1, "credocument");
ldomXPointer xp = doc->text_view->getBookmark();
lua_pushstring(L, UnicodeToLocal(xp.toString()).c_str());
return 1;
}
static int getFullHeight(lua_State *L) {
CreDocument *doc = (CreDocument*) luaL_checkudata(L, 1, "credocument");
lua_pushinteger(L, doc->text_view->GetFullHeight());
return 1;
}
static int getPageStartY(lua_State *L) {
CreDocument *doc = (CreDocument*) luaL_checkudata(L, 1, "credocument");
int pageno = luaL_checkint(L, 2);
lua_pushinteger(L, doc->text_view->getPageStartY(pageno - 1));
return 1;
}
static int getPageHeight(lua_State *L) {
CreDocument *doc = (CreDocument*) luaL_checkudata(L, 1, "credocument");
int pageno = luaL_checkint(L, 2);
lua_pushinteger(L, doc->text_view->getPageHeight(pageno - 1));
return 1;
}
static int getPageOffsetX(lua_State *L) {
// Mostly useful to get the 2nd page x in 2-pages mode
CreDocument *doc = (CreDocument*) luaL_checkudata(L, 1, "credocument");
int pageno = luaL_checkint(L, 2);
lvRect rc;
doc->text_view->getPageRectangle(pageno - 1, rc);
lua_pushinteger(L, rc.left);
return 1;
}
static int getFontSize(lua_State *L) {
CreDocument *doc = (CreDocument*) luaL_checkudata(L, 1, "credocument");
lua_pushinteger(L, doc->text_view->getFontSize());
return 1;
}
static int getFontFace(lua_State *L) {
CreDocument *doc = (CreDocument*) luaL_checkudata(L, 1, "credocument");
lua_pushstring(L, doc->text_view->getDefaultFontFace().c_str());
return 1;
}
/*
* helper function for getTableOfContent()
*/
static int walkTableOfContent(lua_State *L, LVTocItem *toc, int *count) {
LVTocItem *toc_tmp = NULL;
int i = 0,
nr_child = toc->getChildCount();
for (i = 0; i < nr_child; i++) {
toc_tmp = toc->getChild(i);
lua_pushnumber(L, (*count)++);
/* set subtable, Toc entry */
lua_newtable(L);
lua_pushstring(L, "page");
lua_pushnumber(L, toc_tmp->getPage()+1);
lua_settable(L, -3);
// Note: toc_tmp->getXPointer().toString() and toc_tmp->getPath() return
// the same xpath string. But when just loaded from cache, the XPointer
// is not yet available, but getPath() is. So let's use it, which avoids
// having to build the XPointers until they are needed to update page numbers.
lua_pushstring(L, "xpointer");
// lua_pushstring(L, UnicodeToLocal( toc_tmp->getXPointer().toString()).c_str());
lua_pushstring(L, UnicodeToLocal(toc_tmp->getPath()).c_str());
lua_settable(L, -3);
lua_pushstring(L, "depth");
lua_pushnumber(L, toc_tmp->getLevel());
lua_settable(L, -3);
lua_pushstring(L, "title");
lua_pushstring(L, UnicodeToLocal(toc_tmp->getName()).c_str());
lua_settable(L, -3);
/* set Toc entry to Toc table */
lua_settable(L, -3);
if (toc_tmp->getChildCount() > 0) {
walkTableOfContent(L, toc_tmp, count);
}
}
return 0;
}
/*
* Return a table like this:
* {
* {
* page=12,
* xpointer = "/body/DocFragment[11].0",
* depth=1,
* title="chapter1"
* },
* {
* page=54,
* xpointer = "/body/DocFragment[13].0",
* depth=1,
* title="chapter2"
* },
* }
*
*/
static int getTableOfContent(lua_State *L) {