[yu_i]

Hi.
I found an issue: setIntProperty and setStringProperty invoke propsApply, which resets interline space, gamma, and perhaps some over settings to their defaults. Below a fix for interline space and gamma.

diff -rupN koreader_orig/base/cre.cpp koreader/base/cre.cpp
--- koreader_orig/base/cre.cpp  2014-10-27 02:37:53.273630266 +0100
+++ koreader/base/cre.cpp       2014-10-27 03:31:56.722246829 +0100
@@ -386,10 +386,18 @@ static int getGammaIndex(lua_State *L) {
 }

 static int setGammaIndex(lua_State *L) {
-       int index = luaL_checkint(L, 1);
+       CreDocument *doc = (CreDocument*) luaL_checkudata(L, 1, "credocument");
+       int index = luaL_checkint(L, 2);

        fontMan->SetGammaIndex(index);

+       double gamma = fontMan->GetGamma();
+       char value[5];
+       snprintf(value, 5, "%.2f", gamma);
+
+       CRPropRef props = doc->text_view->propsGetCurrent();
+       props->setString("font.gamma", value);
+
        return 0;
 }

@@ -1382,7 +1390,6 @@ static const struct luaL_Reg cre_func[]
        {"newDocView", newDocView},
        {"getFontFaces", getFontFaces},
        {"getGammaIndex", getGammaIndex},
-       {"setGammaIndex", setGammaIndex},
        {"registerFont", registerFont},
        {"getHyphDictList", getHyphDictList},
        {"getSelectedHyphDict", getSelectedHyphDict},
@@ -1423,6 +1430,7 @@ static const struct luaL_Reg credocument
        {"setVisiblePageCount", setVisiblePageCount},
        {"adjustFontSizes", adjustFontSizes},
        {"setBatteryState", setBatteryState},
+       {"setGammaIndex", setGammaIndex},
        /* --- control methods ---*/
        {"gotoPage", gotoPage},
        {"gotoPercent", gotoPercent},
diff -rupN koreader_orig/base/kpvcrlib/crengine/crengine/src/lvdocview.cpp koreader/base/kpvcrlib/crengine/crengine/src/lvdocview.cpp
--- koreader_orig/base/kpvcrlib/crengine/crengine/src/lvdocview.cpp     2014-10-27 03:18:19.839703518 +0100
+++ koreader/base/kpvcrlib/crengine/crengine/src/lvdocview.cpp  2014-10-27 03:41:44.835875863 +0100
@@ -3125,9 +3125,13 @@ static int findBestFit(LVArray<int> & v,

 void LVDocView::setDefaultInterlineSpace(int percent) {
        LVLock lock(getMutex());
-    REQUEST_RENDER("setDefaultInterlineSpace")
+       int oldpercent = m_def_interline_space;
        m_def_interline_space = percent;
-    _posIsSet = false;
+       if (oldpercent != percent) {
+               propsGetCurrent()->setInt(PROP_INTERLINE_SPACE, m_def_interline_space);
+               _posIsSet = false;
+       REQUEST_RENDER("setDefaultInterlineSpace")
+       }
 //     goToBookmark( _posBookmark);
 //        updateBookMarksRanges();
 }
diff -rupN koreader_orig/frontend/document/credocument.lua koreader/frontend/document/credocument.lua
--- koreader_orig/frontend/document/credocument.lua     2014-10-27 02:36:29.601678705 +0100
+++ koreader/frontend/document/credocument.lua  2014-10-27 03:33:36.817599779 +0100
@@ -361,7 +361,7 @@ end

 function CreDocument:setGammaIndex(index)
     DEBUG("CreDocument: set gamma index", index)
-    cre.setGammaIndex(index)
+    self._document:setGammaIndex(index)
 end

 function CreDocument:setStyleSheet(new_css)