# HG changeset patch
# User Chris Cannam
# Date 1542120522 0
# Node ID 3c99083a4d839e57c0fb6f6f34b161f9a9d43079
# Parent  1eb560b363e7ab1740ad2c1114dc8701e7889b90
Move layer name text up a bit when rendering on a layer with a horizontal scale (i.e. spectrum)

diff -r 1eb560b363e7 -r 3c99083a4d83 layer/Layer.h
--- a/layer/Layer.h	Tue Nov 13 14:06:48 2018 +0000
+++ b/layer/Layer.h	Tue Nov 13 14:48:42 2018 +0000
@@ -136,6 +136,8 @@
     virtual void paintVerticalScale(LayerGeometryProvider *, bool /* detailed */,
                                     QPainter &, QRect) const { }
 
+    virtual int getHorizontalScaleHeight(LayerGeometryProvider *, QPainter &) const { return 0; }
+    
     virtual bool getCrosshairExtents(LayerGeometryProvider *, QPainter &, QPoint /* cursorPos */,
                                      std::vector<QRect> &) const {
         return false;
diff -r 1eb560b363e7 -r 3c99083a4d83 layer/SliceLayer.h
--- a/layer/SliceLayer.h	Tue Nov 13 14:06:48 2018 +0000
+++ b/layer/SliceLayer.h	Tue Nov 13 14:48:42 2018 +0000
@@ -43,8 +43,6 @@
     virtual int getVerticalScaleWidth(LayerGeometryProvider *v, bool, QPainter &) const;
     virtual void paintVerticalScale(LayerGeometryProvider *v, bool, QPainter &paint, QRect rect) const;
 
-    virtual int getHorizontalScaleHeight(LayerGeometryProvider *, QPainter &) const { return 0; }
-
     virtual ColourSignificance getLayerColourSignificance() const {
         return ColourAndBackgroundSignificant;
     }
diff -r 1eb560b363e7 -r 3c99083a4d83 view/Pane.cpp
--- a/view/Pane.cpp	Tue Nov 13 14:06:48 2018 +0000
+++ b/view/Pane.cpp	Tue Nov 13 14:48:42 2018 +0000
@@ -881,6 +881,8 @@
 void
 Pane::drawLayerNames(QRect r, QPainter &paint)
 {
+    ViewProxy proxy(this, effectiveDevicePixelRatio());
+    
     int fontHeight = paint.fontMetrics().height();
     int fontAscent = paint.fontMetrics().ascent();
 
@@ -889,6 +891,18 @@
         lly -= m_manager->scalePixelSize(20);
     }
 
+    for (LayerList::iterator i = m_layerStack.end(); i != m_layerStack.begin();) {
+        --i;
+        int hsh = (*i)->getHorizontalScaleHeight(&proxy, paint);
+        if (hsh > 0) {
+            lly -= hsh;
+            break;
+        }
+        if ((*i)->isLayerOpaque()) {
+            break;
+        }
+    }
+    
     if (r.y() + r.height() < lly - int(m_layerStack.size()) * fontHeight) {
         return;
     }