themes: fix treeview style

src/resources/themes/v_pure/v_pure.palette

@@ -265,6 +265,7 @@ insertselector_bg=@base_bg
 ; TreeView.
 treeview_fg=@content_fg
 treeview_bg=@content_bg
+treeview_item_border_bg=@border_bg
 treeview_item_hover_fg=@hover_fg
 treeview_item_hover_bg=@hover_bg
 treeview_item_selected_fg=@selected_fg

src/resources/themes/v_pure/v_pure.qss

@@ -786,6 +786,12 @@ QTreeView::item {
     padding-bottom: 5px;
 }
 
+QTreeView[ItemBorder="true"]::item {
+    padding-top: 5px;
+    padding-bottom: 5px;
+    border-bottom: 1px solid @treeview_item_border_bg;
+}
+
 QTreeView::item:hover {
     color: @treeview_item_hover_fg;
     background: @treeview_item_hover_bg;
@@ -829,6 +835,30 @@ QTreeView::branch:open:has-children:has-siblings  {
     border-image: none;
     image: url(branch_open.svg);
 }
+
+QTreeView[PlainTree="true"]::branch:has-siblings:!adjoins-item {
+    border-image: none;
+}
+
+QTreeView[PlainTree="true"]::branch:has-siblings:adjoins-item {
+    border-image: none;
+}
+
+QTreeView[PlainTree="true"]::branch:!has-children:!has-siblings:adjoins-item {
+    border-image: none;
+}
+
+QTreeView[PlainTree="true"]::branch:has-children:!has-siblings:closed,
+QTreeView[PlainTree="true"]::branch:closed:has-children:has-siblings {
+    border-image: none;
+    image: none;
+}
+
+QTreeView[PlainTree="true"]::branch:open:has-children:!has-siblings,
+QTreeView[PlainTree="true"]::branch:open:has-children:has-siblings  {
+    border-image: none;
+    image: none;
+}
 /* End QTreeView */
 
 /* QListView */

src/resources/themes/v_white/v_white.palette

@@ -234,6 +234,7 @@ insertselector_bg=@base_bg
 ; TreeView.
 treeview_fg=@content_fg
 treeview_bg=@content_bg
+treeview_item_border_bg=@border_bg
 treeview_item_hover_fg=@hover_fg
 treeview_item_hover_bg=@hover_bg
 treeview_item_selected_fg=@selected_fg

src/resources/themes/v_white/v_white.qss

@@ -687,6 +687,12 @@ QTreeView::item {
     padding-bottom: 5px;
 }
 
+QTreeView[ItemBorder="true"]::item {
+    padding-top: 5px;
+    padding-bottom: 5px;
+    border-bottom: 1px solid @treeview_item_border_bg;
+}
+
 QTreeView::item:hover {
     color: @treeview_item_hover_fg;
     background: @treeview_item_hover_bg;
@@ -730,6 +736,30 @@ QTreeView::branch:open:has-children:has-siblings  {
     border-image: none;
     image: url(branch_open.svg);
 }
+
+QTreeView[PlainTree="true"]::branch:has-siblings:!adjoins-item {
+    border-image: none;
+}
+
+QTreeView[PlainTree="true"]::branch:has-siblings:adjoins-item {
+    border-image: none;
+}
+
+QTreeView[PlainTree="true"]::branch:!has-children:!has-siblings:adjoins-item {
+    border-image: none;
+}
+
+QTreeView[PlainTree="true"]::branch:has-children:!has-siblings:closed,
+QTreeView[PlainTree="true"]::branch:closed:has-children:has-siblings {
+    border-image: none;
+    image: none;
+}
+
+QTreeView[PlainTree="true"]::branch:open:has-children:!has-siblings,
+QTreeView[PlainTree="true"]::branch:open:has-children:has-siblings  {
+    border-image: none;
+    image: none;
+}
 /* End QTreeView */
 
 /* QListView */

src/vvimindicator.cpp

@@ -105,6 +105,8 @@ void VVimIndicator::setupUI()
     m_modeLabel->setProperty("VimIndicatorModeLabel", true);
 
     QTreeWidget *regTree = new QTreeWidget(this);
+    regTree->setProperty("ItemBorder", true);
+    regTree->setRootIsDecorated(false);
     regTree->setColumnCount(2);
     regTree->header()->setStretchLastSection(true);
     QStringList headers;
@@ -121,6 +123,8 @@ void VVimIndicator::setupUI()
             this, &VVimIndicator::updateRegistersTree);
 
     QTreeWidget *markTree = new QTreeWidget(this);
+    markTree->setProperty("ItemBorder", true);
+    markTree->setRootIsDecorated(false);
     markTree->setColumnCount(4);
     markTree->header()->setStretchLastSection(true);
     headers.clear();