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-rw-r--r--silx/gui/widgets/RangeSlider.py198
1 files changed, 168 insertions, 30 deletions
diff --git a/silx/gui/widgets/RangeSlider.py b/silx/gui/widgets/RangeSlider.py
index 0b72e71..0cf195c 100644
--- a/silx/gui/widgets/RangeSlider.py
+++ b/silx/gui/widgets/RangeSlider.py
@@ -31,7 +31,7 @@ from __future__ import absolute_import, division
__authors__ = ["D. Naudet", "T. Vincent"]
__license__ = "MIT"
-__date__ = "02/08/2018"
+__date__ = "26/11/2018"
import numpy as numpy
@@ -40,6 +40,17 @@ from silx.gui import qt, icons, colors
from silx.gui.utils.image import convertArrayToQImage
+class StyleOptionRangeSlider(qt.QStyleOption):
+ def __init__(self):
+ super(StyleOptionRangeSlider, self).__init__()
+ self.minimum = None
+ self.maximum = None
+ self.sliderPosition1 = None
+ self.sliderPosition2 = None
+ self.handlerRect1 = None
+ self.handlerRect2 = None
+
+
class RangeSlider(qt.QWidget):
"""Range slider with 2 thumbs and an optional colored groove.
@@ -86,6 +97,8 @@ class RangeSlider(qt.QWidget):
self.__secondValue = 1.
self.__minValue = 0.
self.__maxValue = 1.
+ self.__hoverRect = qt.QRect()
+ self.__hoverControl = None
self.__focus = None
self.__moving = None
@@ -100,6 +113,7 @@ class RangeSlider(qt.QWidget):
super(RangeSlider, self).__init__(parent)
self.setFocusPolicy(qt.Qt.ClickFocus)
+ self.setAttribute(qt.Qt.WA_Hover)
self.setMinimumSize(qt.QSize(50, 20))
self.setMaximumHeight(20)
@@ -107,6 +121,34 @@ class RangeSlider(qt.QWidget):
# Broadcast value changed signal
self.sigValueChanged.connect(self.__emitPositionChanged)
+ def event(self, event):
+ t = event.type()
+ if t == qt.QEvent.HoverEnter or t == qt.QEvent.HoverLeave or t == qt.QEvent.HoverMove:
+ return self.__updateHoverControl(event.pos())
+ else:
+ return super(RangeSlider, self).event(event)
+
+ def __updateHoverControl(self, pos):
+ hoverControl, hoverRect = self.__findHoverControl(pos)
+ if hoverControl != self.__hoverControl:
+ self.update(self.__hoverRect)
+ self.update(hoverRect)
+ self.__hoverControl = hoverControl
+ self.__hoverRect = hoverRect
+ return True
+ return hoverControl is not None
+
+ def __findHoverControl(self, pos):
+ """Returns the control at the position and it's rect location"""
+ for name in ["first", "second"]:
+ rect = self.__sliderRect(name)
+ if rect.contains(pos):
+ return name, rect
+ rect = self.__drawArea()
+ if rect.contains(pos):
+ return "groove", rect
+ return None, qt.QRect()
+
# Position <-> Value conversion
def __positionToValue(self, position):
@@ -469,10 +511,12 @@ class RangeSlider(qt.QWidget):
super(RangeSlider, self).mouseMoveEvent(event)
if self.__moving is not None:
- position = self.__xPixelToPosition(event.pos().x())
+ delta = self._SLIDER_WIDTH // 2
if self.__moving == 'first':
+ position = self.__xPixelToPosition(event.pos().x() + delta)
self.setFirstPosition(position)
else:
+ position = self.__xPixelToPosition(event.pos().x() - delta)
self.setSecondPosition(position)
def mouseReleaseEvent(self, event):
@@ -564,13 +608,13 @@ class RangeSlider(qt.QWidget):
def __sliderAreaRect(self):
return self.__drawArea().adjusted(self._SLIDER_WIDTH / 2.,
0,
- -self._SLIDER_WIDTH / 2.,
+ -self._SLIDER_WIDTH / 2. + 1,
0)
def __pixMapRect(self):
return self.__sliderAreaRect().adjusted(0,
self._PIXMAP_VOFFSET,
- 0,
+ -1,
-self._PIXMAP_VOFFSET)
def paintEvent(self, event):
@@ -579,33 +623,55 @@ class RangeSlider(qt.QWidget):
style = qt.QApplication.style()
area = self.__drawArea()
- pixmapRect = self.__pixMapRect()
-
- option = qt.QStyleOptionProgressBar()
- option.initFrom(self)
- option.rect = area
- option.state = ((self.isEnabled() and qt.QStyle.State_Enabled)
- or qt.QStyle.State_None)
- style.drawControl(qt.QStyle.CE_ProgressBarGroove,
- option,
- painter,
- self)
+ if self.__pixmap is not None:
+ pixmapRect = self.__pixMapRect()
- painter.save()
- pen = painter.pen()
- pen.setWidth(1)
- pen.setColor(qt.Qt.black if self.isEnabled() else qt.Qt.gray)
- painter.setPen(pen)
- painter.drawRect(pixmapRect.adjusted(-1, -1, 1, 1))
- painter.restore()
+ option = qt.QStyleOptionProgressBar()
+ option.initFrom(self)
+ option.rect = area
+ option.state = (qt.QStyle.State_Enabled if self.isEnabled()
+ else qt.QStyle.State_None)
+ style.drawControl(qt.QStyle.CE_ProgressBarGroove,
+ option,
+ painter,
+ self)
+
+ painter.save()
+ pen = painter.pen()
+ pen.setWidth(1)
+ pen.setColor(qt.Qt.black if self.isEnabled() else qt.Qt.gray)
+ painter.setPen(pen)
+ painter.drawRect(pixmapRect.adjusted(-1, -1, 0, 1))
+ painter.restore()
+
+ if self.isEnabled():
+ rect = area.adjusted(self._SLIDER_WIDTH // 2,
+ self._PIXMAP_VOFFSET,
+ -self._SLIDER_WIDTH // 2,
+ -self._PIXMAP_VOFFSET + 1)
+ painter.drawPixmap(rect,
+ self.__pixmap,
+ self.__pixmap.rect())
+ else:
+ option = StyleOptionRangeSlider()
+ option.initFrom(self)
+ option.rect = area
+ option.sliderPosition1 = self.__firstValue
+ option.sliderPosition2 = self.__secondValue
+ option.handlerRect1 = self.__sliderRect("first")
+ option.handlerRect2 = self.__sliderRect("second")
+ option.minimum = self.__minValue
+ option.maximum = self.__maxValue
+ option.state = (qt.QStyle.State_Enabled if self.isEnabled()
+ else qt.QStyle.State_None)
+ if self.__hoverControl == "groove":
+ option.state |= qt.QStyle.State_MouseOver
+ elif option.state & qt.QStyle.State_MouseOver:
+ option.state ^= qt.QStyle.State_MouseOver
+ self.drawRangeSliderBackground(painter, option, self)
- if self.isEnabled() and self.__pixmap is not None:
- painter.drawPixmap(area.adjusted(self._SLIDER_WIDTH / 2,
- self._PIXMAP_VOFFSET,
- -self._SLIDER_WIDTH / 2 + 1,
- -self._PIXMAP_VOFFSET + 1),
- self.__pixmap,
- self.__pixmap.rect())
+ # Avoid glitch when moving handles
+ hoverControl = self.__moving or self.__hoverControl
for name in ('first', 'second'):
rect = self.__sliderRect(name)
@@ -613,7 +679,9 @@ class RangeSlider(qt.QWidget):
option.initFrom(self)
option.icon = self.__icons[name]
option.iconSize = rect.size() * 0.7
- if option.state & qt.QStyle.State_MouseOver:
+ if hoverControl == name:
+ option.state |= qt.QStyle.State_MouseOver
+ elif option.state & qt.QStyle.State_MouseOver:
option.state ^= qt.QStyle.State_MouseOver
if self.__focus == name:
option.state |= qt.QStyle.State_HasFocus
@@ -625,3 +693,73 @@ class RangeSlider(qt.QWidget):
def sizeHint(self):
return qt.QSize(200, self.minimumHeight())
+
+ @classmethod
+ def drawRangeSliderBackground(cls, painter, option, widget):
+ """Draw the background of the RangeSlider widget into the painter.
+
+ :param qt.QPainter painter: A painter
+ :param StyleOptionRangeSlider option: Options to draw the widget
+ :param qt.QWidget: The widget which have to be drawn
+ """
+ painter.save()
+ painter.translate(0.5, 0.5)
+
+ backgroundRect = qt.QRect(option.rect)
+ if backgroundRect.height() > 8:
+ center = backgroundRect.center()
+ backgroundRect.setHeight(8)
+ backgroundRect.moveCenter(center)
+
+ selectedRangeRect = qt.QRect(backgroundRect)
+ selectedRangeRect.setLeft(option.handlerRect1.center().x())
+ selectedRangeRect.setRight(option.handlerRect2.center().x())
+
+ highlight = option.palette.color(qt.QPalette.Highlight)
+ activeHighlight = highlight
+ selectedOutline = option.palette.color(qt.QPalette.Highlight)
+
+ buttonColor = option.palette.button().color()
+ val = qt.qGray(buttonColor.rgb())
+ buttonColor = buttonColor.lighter(100 + max(1, (180 - val) // 6))
+ buttonColor.setHsv(buttonColor.hue(), buttonColor.saturation() * 0.75, buttonColor.value())
+
+ grooveColor = qt.QColor()
+ grooveColor.setHsv(buttonColor.hue(),
+ min(255, (int)(buttonColor.saturation())),
+ min(255, (int)(buttonColor.value() * 0.9)))
+
+ selectedInnerContrastLine = qt.QColor(255, 255, 255, 30)
+
+ outline = option.palette.color(qt.QPalette.Background).darker(140)
+ if (option.state & qt.QStyle.State_HasFocus and option.state & qt.QStyle.State_KeyboardFocusChange):
+ outline = highlight.darker(125)
+ if outline.value() > 160:
+ outline.setHsl(highlight.hue(), highlight.saturation(), 160)
+
+ # Draw background groove
+ painter.setRenderHint(qt.QPainter.Antialiasing, True)
+ gradient = qt.QLinearGradient()
+ gradient.setStart(backgroundRect.center().x(), backgroundRect.top())
+ gradient.setFinalStop(backgroundRect.center().x(), backgroundRect.bottom())
+ painter.setPen(qt.QPen(outline))
+ gradient.setColorAt(0, grooveColor.darker(110))
+ gradient.setColorAt(1, grooveColor.lighter(110))
+ painter.setBrush(gradient)
+ painter.drawRoundedRect(backgroundRect.adjusted(1, 1, -2, -2), 1, 1)
+
+ # Draw slider background for the value
+ gradient = qt.QLinearGradient()
+ gradient.setStart(selectedRangeRect.center().x(), selectedRangeRect.top())
+ gradient.setFinalStop(selectedRangeRect.center().x(), selectedRangeRect.bottom())
+ painter.setRenderHint(qt.QPainter.Antialiasing, True)
+ painter.setPen(qt.QPen(selectedOutline))
+ gradient.setColorAt(0, activeHighlight)
+ gradient.setColorAt(1, activeHighlight.lighter(130))
+ painter.setBrush(gradient)
+ painter.drawRoundedRect(selectedRangeRect.adjusted(1, 1, -2, -2), 1, 1)
+ painter.setPen(selectedInnerContrastLine)
+ painter.setBrush(qt.Qt.NoBrush)
+ painter.drawRoundedRect(selectedRangeRect.adjusted(2, 2, -3, -3), 1, 1)
+
+ painter.restore()
generated by cgit v1.2.3 (git 2.25.1) at 2024-05-10 05:57:10 +0000