switch direction of the range start/end icons

With the old direction they were overlapping each other,
which made it impossible to move the end slider.

icons/myicons/range-end.svg

@@ -1,10 +1,10 @@
 <svg xmlns="http://www.w3.org/2000/svg" width="512" height="512" viewBox="0 0 16 16">
 
     <path style="fill: #dddddd; stroke: black; stroke-linejoin:round;"
-          d="M8,13
-   	L1,3
-	L15,3
+          d="M8,3
+   	L1,13
+	L15,13
    	z
    	"/>
-    <line x1="0.5" y1="13.5" x2="15.5" y2="13.5" style="stroke:black;"/>
+    <line x1="0.5" y1="2.5" x2="15.5" y2="2.5" style="stroke:black;"/>
 </svg>

icons/myicons/range-start.svg

@@ -1,10 +1,10 @@
 <svg xmlns="http://www.w3.org/2000/svg" width="512" height="512" viewBox="0 0 16 16">
 
     <path style="fill: #dddddd; stroke: black; stroke-linejoin:round;"
-          d="M8,3
-   	L1,13
-	L15,13
+          d="M8,13
+   	L1,3
+	L15,3
    	z
    	"/>
-    <line x1="0.5" y1="2.5" x2="15.5" y2="2.5" style="stroke:black;"/>
+    <line x1="0.5" y1="13.5" x2="15.5" y2="13.5" style="stroke:black;"/>
 </svg>

src/ui/rangeslider.py

@@ -12,6 +12,7 @@ from src.util import conversion
 from src.util.color import to_qcolor
 from src.i18n import _
 
+
 class RangeSliderHandle():
     def __init__(self, value: int):
         self.value = value
@@ -74,26 +75,29 @@ class RangeSlider(QWidget):
         painter = QPainter(self)
         self._draw_background(painter)
         self._draw_hits(painter)
-        self._draw_handle(painter, self.lower_value)
-        self._draw_handle(painter, self.upper_value, direction=-1)
+        self._draw_handle(painter, self.lower_value, direction=-1)
+        self._draw_handle(painter, self.upper_value)
         painter.end()
 
     def _draw_background(self, painter: QPainter) -> None:
         painter.setBrush(to_qcolor("50ade8"))
         painter.setPen(to_qcolor("dddddd"))
 
+        # the 1px wide grey center line
         rect = QRect(round(10), self._handle_width, round(1),
                      self.height() - 2 * self._handle_width)
         painter.drawRoundedRect(rect, 3.0, 3.0)
 
+        # the blue line
         rect = QRect(round(7),
-                     self._value_to_pixel(self.lower_value.value) + self._handle_width,
+                     self._value_to_pixel(self.lower_value.value),
                      round(6),
-                     self._value_to_pixel(self.upper_value.value - self.lower_value.value) - 2 * self._handle_width)
+                     self._value_to_pixel(self.upper_value.value - self.lower_value.value) - 1 * self._handle_width)
         painter.drawRoundedRect(rect, 3.0, 3.0)
 
     def _draw_handle(self, painter: QPainter, handle: RangeSliderHandle, direction=1) -> None:
         y_pixel = self._value_to_pixel(handle.value)
+        h = self._handle_width - 1  # height of the handle
 
         painter.setBrush(to_qcolor("dddddd"))
         painter.setPen(to_qcolor("444444"))
@@ -101,15 +105,7 @@ class RangeSlider(QWidget):
         painter.drawLine(2, y_pixel, 18, y_pixel)
         painter.setRenderHint(PySide6.QtGui.QPainter.RenderHint.Antialiasing, True)
         painter.drawPolygon(
-            (QPoint(10, y_pixel), QPoint(18, y_pixel + 12 * direction), QPoint(2, y_pixel + 12 * direction)))
-
-    def _draw_handle_circle(self, painter: QPainter, handle: RangeSliderHandle) -> None:
-        y_pixel = self._value_to_pixel(handle.value)
-
-        painter.setBrush(to_qcolor("dddddd"))
-        painter.setPen(to_qcolor("444444"))
-        painter.setRenderHint(PySide6.QtGui.QPainter.RenderHint.Antialiasing, True)
-        painter.drawEllipse(QPoint(self._width / 2, y_pixel), self._handle_width / 2 - 1, self._handle_width / 2 - 1)
+            (QPoint(10, y_pixel), QPoint(18, y_pixel + h * direction), QPoint(2, y_pixel + h * direction)))
 
     def _value_to_pixel(self, value: int) -> int:
         value_percent = value / self.max_value
@@ -149,11 +145,11 @@ class RangeSlider(QWidget):
     def mousePressEvent(self, e: QtGui.QMouseEvent) -> None:
         if e.buttons() == Qt.MouseButton.LeftButton and e.modifiers() == Qt.KeyboardModifier.NoModifier:
             pos: QPoint = e.pos()
-            if self._is_on_handle(self.lower_value, pos.y(), direction=1):
+            if self._is_on_handle(self.lower_value, pos.y(), direction=-1):
                 self.selected_handle = self.lower_value
                 self.selection_drag_range = (self.min_value, self.upper_value.value)
                 self.drag_y_offset_in_handle = self.selected_handle.value - self._pixel_to_value(pos.y())
-            if self._is_on_handle(self.upper_value, pos.y(), direction=-1):
+            if self._is_on_handle(self.upper_value, pos.y(), direction=1):
                 self.selected_handle = self.upper_value
                 self.selection_drag_range = (self.lower_value.value, self.max_value)
                 self.drag_y_offset_in_handle = self.selected_handle.value - self._pixel_to_value(pos.y())