highligh offset in OpenGL backend

Author: t20100

src/silx/gui/plot/backends/glutils/GLPlotFrame.py

@@ -103,7 +103,7 @@ def __init__(
         self._foregroundColor = foregroundColor
         self._labelAlign = labelAlign
         self._labelVAlign = labelVAlign
-        self._orderOffetAnchor = (1.0, 0.0)
+        self._orderOffsetAnchor = (1.0, 0.0)
         self._orderOffsetAlign = orderOffsetAlign
         self._orderOffsetVAlign = orderOffsetVAlign
         self._titleAlign = titleAlign
@@ -211,14 +211,14 @@ def title(self, title):
             self._dirtyPlotFrame()
 
     @property
-    def orderOffetAnchor(self) -> tuple[float, float]:
+    def orderOffsetAnchor(self) -> tuple[float, float]:
         """Anchor position for the tick order&offset text"""
-        return self._orderOffetAnchor
+        return self._orderOffsetAnchor
 
-    @orderOffetAnchor.setter
-    def orderOffetAnchor(self, position: tuple[float, float]):
-        if position != self._orderOffetAnchor:
-            self._orderOffetAnchor = position
+    @orderOffsetAnchor.setter
+    def orderOffsetAnchor(self, position: tuple[float, float]):
+        if position != self._orderOffsetAnchor:
+            self._orderOffsetAnchor = position
             self._dirtyTicks()
 
     @property
@@ -315,11 +315,20 @@ def getVerticesAndLabels(self):
         labels.append(axisTitle)
 
         if self._orderAndOffsetText:
-            xOrderOffset, yOrderOffet = self.orderOffetAnchor
+            orderAndOffsetFont = qt.QFont(self.font)
+            orderAndOffsetFont.setWeight(qt.QFont.ExtraBold)
+            pointSize = orderAndOffsetFont.pointSizeF()
+            if pointSize > 0:
+                orderAndOffsetFont.setPointSizeF(1.2 * pointSize)
+            pixelSize = orderAndOffsetFont.pixelSize()
+            if pixelSize > 0:
+                orderAndOffsetFont.setPixelSize(int(1.2 * pixelSize))
+
+            xOrderOffset, yOrderOffet = self.orderOffsetAnchor
             labels.append(
                 Text2D(
                     text=self._orderAndOffsetText,
-                    font=self.font,
+                    font=orderAndOffsetFont,
                     color=self._foregroundColor,
                     x=xOrderOffset,
                     y=yOrderOffet,
@@ -856,7 +865,7 @@ def __init__(self, marginRatios, foregroundColor, gridColor, font: qt.QFont):
                 foregroundColor=self._foregroundColor,
                 labelAlign=RIGHT,
                 labelVAlign=CENTER,
-                orderOffsetAlign=LEFT,
+                orderOffsetAlign=RIGHT,
                 orderOffsetVAlign=BOTTOM,
                 titleAlign=CENTER,
                 titleVAlign=BOTTOM,
@@ -871,7 +880,7 @@ def __init__(self, marginRatios, foregroundColor, gridColor, font: qt.QFont):
             foregroundColor=self._foregroundColor,
             labelAlign=LEFT,
             labelVAlign=CENTER,
-            orderOffsetAlign=RIGHT,
+            orderOffsetAlign=LEFT,
             orderOffsetVAlign=BOTTOM,
             titleAlign=CENTER,
             titleVAlign=TOP,
@@ -1342,17 +1351,17 @@ def _buildVerticesAndLabels(self):
         if fontPixelSize == -1:
             fontPixelSize = self._font.pointSizeF() / 72.0 * self.dotsPerInch
 
-        self.axes[0].orderOffetAnchor = (
+        self.axes[0].orderOffsetAnchor = (
             xCoords[1],
             yCoords[0] + fontPixelSize * 1.2,
         )
-        self.axes[1].orderOffetAnchor = (
+        self.axes[1].orderOffsetAnchor = (
             xCoords[0],
-            yCoords[1] - 4 * self.devicePixelRatio,
+            yCoords[1] - 4 * self.devicePixelRatio - fontPixelSize / 2.0,
         )
-        self._y2Axis.orderOffetAnchor = (
+        self._y2Axis.orderOffsetAnchor = (
             xCoords[1],
-            yCoords[1] - 4 * self.devicePixelRatio,
+            yCoords[1] - 4 * self.devicePixelRatio - fontPixelSize / 2.0,
         )
 
         if self.isYAxisInverted: