Using two splitters instead of one to make positioning easier.

nw/config.py

@@ -48,7 +48,8 @@ class Config:
         self.guiTheme     = "default"
         self.winGeometry  = [1100, 650]
         self.treeColWidth = [120, 30, 50]
-        self.mainPanePos  = [300, 400, 400]
+        self.mainPanePos  = [300, 800]
+        self.docPanePos   = [400, 400]
 
         ## Project
         self.autoSaveProj = 60
@@ -138,7 +139,11 @@ class Config:
                 )
             if confParser.has_option(cnfSec,"mainpane"):
                 self.mainPanePos = self.unpackList(
-                    confParser.get(cnfSec,"mainpane"), 3, self.mainPanePos
+                    confParser.get(cnfSec,"mainpane"), 2, self.mainPanePos
+                )
+            if confParser.has_option(cnfSec,"docpane"):
+                self.docPanePos = self.unpackList(
+                    confParser.get(cnfSec,"docpane"), 2, self.docPanePos
                 )
 
         ## Project
@@ -206,6 +211,7 @@ class Config:
         confParser.set(cnfSec,"geometry", self.packList(self.winGeometry))
         confParser.set(cnfSec,"treecols", self.packList(self.treeColWidth))
         confParser.set(cnfSec,"mainpane", self.packList(self.mainPanePos))
+        confParser.set(cnfSec,"docpane",  self.packList(self.docPanePos))
 
         ## Project
         cnfSec = "Project"
@@ -298,4 +304,9 @@ class Config:
         self.confChanged = True
         return True
 
+    def setDocPanePos(self, panePos):
+        self.docPanePos  = panePos
+        self.confChanged = True
+        return True
+
 # End Class Config

nw/gui/winmain.py

@@ -70,27 +70,29 @@ class GuiMain(QMainWindow):
         self.treeBox.addWidget(self.docDetails)
         self.treePane.setLayout(self.treeBox)
 
+        self.splitView = QSplitter(Qt.Horizontal)
+        self.splitView.addWidget(self.docEditor)
+        self.splitView.addWidget(self.docViewer)
+
         self.splitMain = QSplitter(Qt.Horizontal)
         self.splitMain.addWidget(self.treePane)
-        self.splitMain.addWidget(self.docEditor)
-        self.splitMain.addWidget(self.docViewer)
+        self.splitMain.addWidget(self.splitView)
         self.splitMain.setSizes(self.mainConf.mainPanePos)
         self.splitMain.splitterMoved.connect(self._splitMainMove)
 
         self.setCentralWidget(self.splitMain)
 
         self.idxTree   = self.splitMain.indexOf(self.treePane)
-        self.idxEditor = self.splitMain.indexOf(self.docEditor)
-        self.idxViewer = self.splitMain.indexOf(self.docViewer)
+        self.idxMain   = self.splitMain.indexOf(self.splitView)
+        self.idxEditor = self.splitView.indexOf(self.docEditor)
+        self.idxViewer = self.splitView.indexOf(self.docViewer)
 
         self.splitMain.setCollapsible(self.idxTree,   False)
-        self.splitMain.setCollapsible(self.idxEditor, False)
-        self.splitMain.setCollapsible(self.idxViewer, True)
+        self.splitMain.setCollapsible(self.idxMain,   False)
+        self.splitView.setCollapsible(self.idxEditor, False)
+        self.splitView.setCollapsible(self.idxViewer, True)
 
         self.docViewer.setVisible(False)
-        pPos = self.mainConf.mainPanePos
-        tPos = [pPos[0], pPos[1]+pPos[2]]
-        self.splitMain.setSizes(tPos)
 
         # Build GUI Elements
         self.treeView.itemSelectionChanged.connect(self._treeSingleClick)
@@ -260,11 +262,10 @@ class GuiMain(QMainWindow):
 
             bPos = self.splitMain.sizes()
             self.docViewer.setVisible(True)
-            if bPos[2] == 0:
-                bWidth  = bPos[1]+bPos[2]
-                bPos[1] = int(bWidth/2)
-                bPos[2] = bWidth-bPos[1]
-            self.splitMain.setSizes(bPos)
+            vPos    = [0,0]
+            vPos[0] = int(bPos[1]/2)
+            vPos[1] = bPos[1]-vPos[0]
+            self.splitView.setSizes(vPos)
             self.docEditor.changeWidth()
 
         return True
@@ -346,6 +347,7 @@ class GuiMain(QMainWindow):
         self.mainConf.setWinSize(self.width(), self.height())
         self.mainConf.setTreeColWidths(self.treeView.getColumnSizes())
         self.mainConf.setMainPanePos(self.splitMain.sizes())
+        self.mainConf.setDocPanePos(self.splitView.sizes())
         self.mainConf.saveConfig()
         return
 

sample/sampleNovel/nwProject.nwx

@@ -1,5 +1,5 @@
 <?xml version='1.0' encoding='utf-8'?>
-<novelWriterXML appVersion="0.1.3" fileVersion="1.0" timeStamp="2019-05-18 18:12:49">
+<novelWriterXML appVersion="0.1.3" fileVersion="1.0" timeStamp="2019-05-18 19:29:51">
   <project>
     <name>Sample Project</name>
     <title>Sample Project</title>

tests/reference/novelwriter.conf

@@ -4,7 +4,8 @@ timestamp = 2019-05-18 15:06:44
 [Sizes]
 geometry = 1100, 650
 treecols = 120, 30, 50
-mainpane = 300, 400, 400
+mainpane = 300, 800
+docpane = 400, 400
 
 [Project]
 autosaveproject = 60

tests/test_config.py

@@ -70,7 +70,8 @@ def testConfigSetMainPanePos(nwTemp,nwRef):
     refConf = path.join(nwRef, "novelwriter.conf")
     assert theConf.setMainPanePos([0, 0])
     assert theConf.confChanged
-    assert theConf.setMainPanePos([300, 400, 400])
+    assert theConf.setMainPanePos([300, 800])
+    assert theConf.setDocPanePos([400, 400])
     assert theConf.saveConfig()
     assert cmpFiles(tmpConf, refConf, [2])
     assert not theConf.confChanged