// called whenever global preferences change or a file is
// added or removed from gFileHistory (in order to keep
// the list of recently opened documents in sync)
bool Save()
{
// don't save preferences without the proper permission
if (!HasPermission(Perm_SavePreferences))
return false;
/* mark currently shown files as visible */
for (size_t i = 0; i < gWindows.Count(); i++) {
UpdateCurrentFileDisplayStateForWin(gWindows.At(i));
}
// remove entries which should (no longer) be remembered
gFileHistory.Purge(!gGlobalPrefs->rememberStatePerDocument);
// update display mode and zoom fields from internal values
str::ReplacePtr(&gGlobalPrefs->defaultDisplayMode, conv::FromDisplayMode(gGlobalPrefs->defaultDisplayModeEnum));
conv::FromZoom(&gGlobalPrefs->defaultZoom, gGlobalPrefs->defaultZoomFloat);
ScopedMem<WCHAR> path(GetSettingsPath());
CrashIf(!path);
if (!path)
return false;
size_t prevPrefsDataSize;
ScopedMem<char> prevPrefsData(file::ReadAll(path, &prevPrefsDataSize));
if (!gGlobalPrefs->rememberStatePerDocument || !gGlobalPrefs->rememberOpenedFiles) {
for (DisplayState **ds = gGlobalPrefs->fileStates->IterStart(); ds; ds = gGlobalPrefs->fileStates->IterNext()) {
(*ds)->useDefaultState = true;
}
// prevent unnecessary settings from being written out
uint16_t fieldCount = 0;
while (++fieldCount <= dimof(gFileStateFields)) {
// count the number of fields up to and including useDefaultState
if (gFileStateFields[fieldCount - 1].offset == offsetof(FileState, useDefaultState))
break;
}
// restore the correct fieldCount ASAP after serialization
gFileStateInfo.fieldCount = fieldCount;
}
size_t prefsDataSize;
ScopedMem<char> prefsData(SerializeStruct(&gGlobalPrefsInfo, gGlobalPrefs, prevPrefsData, &prefsDataSize));
if (!gGlobalPrefs->rememberStatePerDocument || !gGlobalPrefs->rememberOpenedFiles)
gFileStateInfo.fieldCount = dimof(gFileStateFields);
CrashIf(!prefsData || 0 == prefsDataSize);
if (!prefsData || 0 == prefsDataSize)
return false;
// only save if anything's changed at all
if (prevPrefsDataSize == prefsDataSize && str::Eq(prefsData, prevPrefsData))
return true;
FileTransaction trans;
bool ok = trans.WriteAll(path, prefsData, prefsDataSize) && trans.Commit();
if (!ok)
return false;
gGlobalPrefs->lastPrefUpdate = file::GetModificationTime(path);
return true;
}
/* Caller needs to prefs::CleanUp() */
bool Load()
{
CrashIf(gGlobalPrefs);
ScopedMem<WCHAR> path(GetSettingsPath());
ScopedMem<char> prefsData(file::ReadAll(path, NULL));
gGlobalPrefs = (GlobalPrefs *)DeserializeStruct(&gGlobalPrefsInfo, prefsData);
CrashAlwaysIf(!gGlobalPrefs);
#ifdef DISABLE_EBOOK_UI
if (!file::Exists(path))
gGlobalPrefs->ebookUI.useFixedPageUI = gGlobalPrefs->chmUI.useFixedPageUI = true;
#endif
#ifdef DISABLE_TABS
if (!file::Exists(path))
gGlobalPrefs->useTabs = false;
#endif
if (!gGlobalPrefs->uiLanguage || !trans::ValidateLangCode(gGlobalPrefs->uiLanguage)) {
// guess the ui language on first start
str::ReplacePtr(&gGlobalPrefs->uiLanguage, trans::DetectUserLang());
}
gGlobalPrefs->lastPrefUpdate = file::GetModificationTime(path);
gGlobalPrefs->defaultDisplayModeEnum = conv::ToDisplayMode(gGlobalPrefs->defaultDisplayMode, DM_AUTOMATIC);
gGlobalPrefs->defaultZoomFloat = conv::ToZoom(gGlobalPrefs->defaultZoom, ZOOM_ACTUAL_SIZE);
CrashIf(!IsValidZoom(gGlobalPrefs->defaultZoomFloat));
int weekDiff = GetWeekCount() - gGlobalPrefs->openCountWeek;
gGlobalPrefs->openCountWeek = GetWeekCount();
if (weekDiff > 0) {
// "age" openCount statistics (cut in in half after every week)
for (DisplayState **ds = gGlobalPrefs->fileStates->IterStart(); ds; ds = gGlobalPrefs->fileStates->IterNext()) {
(*ds)->openCount >>= weekDiff;
}
}
// make sure that zoom levels are in the order expected by DisplayModel
gGlobalPrefs->zoomLevels->Sort(cmpFloat);
while (gGlobalPrefs->zoomLevels->Count() > 0 &&
gGlobalPrefs->zoomLevels->At(0) < ZOOM_MIN) {
gGlobalPrefs->zoomLevels->PopAt(0);
}
while (gGlobalPrefs->zoomLevels->Count() > 0 &&
gGlobalPrefs->zoomLevels->Last() > ZOOM_MAX) {
gGlobalPrefs->zoomLevels->Pop();
}
// TODO: verify that all states have a non-NULL file path?
gFileHistory.UpdateStatesSource(gGlobalPrefs->fileStates);
SetDefaultEbookFont(gGlobalPrefs->ebookUI.fontName, gGlobalPrefs->ebookUI.fontSize);
if (!file::Exists(path))
Save();
return true;
}
void SelectTranslation(const WCHAR *exePath=NULL)
{
LANGID langId = GetUserDefaultUILanguage();
int idx = GetLanguageIndex(langId);
if (-1 == idx) {
// try a neutral language if the specific sublanguage isn't available
langId = MAKELANGID(PRIMARYLANGID(langId), SUBLANG_NEUTRAL);
idx = GetLanguageIndex(langId);
}
if (-1 != idx) {
gTranslationIdx = idx;
plogf("sp: Detected language %s (%d)", gLanguages[idx / gTranslationsCount], idx);
}
// try to extract the language used by SumatraPDF
ScopedMem<WCHAR> path;
if (exePath) {
path.Set(path::GetDir(exePath));
path.Set(path::Join(path, PREFS_FILE_NAME));
}
if (!file::Exists(path)) {
path.Set(GetSpecialFolder(CSIDL_APPDATA));
path.Set(path::Join(path, L"SumatraPDF\\" PREFS_FILE_NAME));
}
if (!file::Exists(path))
return;
plogf("sp: Found preferences at %S", path);
ScopedMem<char> prefsData(file::ReadAll(path, NULL));
SquareTree sqt(prefsData);
const char *langCode = sqt.root ? sqt.root->GetValue("UiLanguage") : NULL;
if (langCode) {
plogf("sp: UiLanguage from preferences: %s", langCode);
for (int i = 0; gLanguages[i]; i++) {
if (str::Eq(gLanguages[i], langCode)) {
gTranslationIdx = i * gTranslationsCount;
break;
}
}
}
}
