Class: QgsColorRampShaderWidget

class qgis.gui.QgsColorRampShaderWidget

Bases: PyQt5.QtWidgets.QWidget

It has 2 ways how to use it. For raster layers, raster data provider and band is assigned and the Quantile classification mode can be used and the LoadFromBandButton is visible.

The other mode is used to style mesh layer contours (scalar datasets)

New in version 3.4.

QgsColorRampShaderWidget(parent: QWidget = None) Creates new color ramp shader widget

Methods

actionEvent
changeEvent
childEvent
classify	Executes the single band pseudo raster classification
closeEvent
connectNotify
contextMenuEvent
create
customEvent
destroy
disconnectNotify
dragEnterEvent
dragLeaveEvent
dragMoveEvent
dropEvent
enterEvent
event
focusInEvent
focusNextChild
focusNextPrevChild
focusOutEvent
focusPreviousChild
hideEvent
initPainter
initializeForUseWithRasterLayer	Allows quantile classification mode for raster layers
inputMethodEvent
isSignalConnected
keyPressEvent
keyReleaseEvent
leaveEvent
loadMinimumMaximumFromTree	Loads min and max values from color ramp tree
maximum	Gets max value
metric
minimum	Gets min value
mouseDoubleClickEvent
mouseMoveEvent
mousePressEvent
mouseReleaseEvent
moveEvent
nativeEvent
paintEvent
populateColormapTreeWidget	Populates color ramp tree from ramp items
receivers
resizeEvent
sender
senderSignalIndex
setExtent	Sets extent, only when used for raster layer
setFromShader	Sets widget state from the color ramp shader
setMinimumMaximum	Sets min max
setMinimumMaximumAndClassify	Sets min max and classify color tree
setRasterBand	Sets raster band, only when used for raster layer
setRasterDataProvider	Associates raster with the widget, only when used for raster layer
shader	Returns shared function used in the renderer
sharedPainter
showEvent
tabletEvent
timerEvent
updateMicroFocus
wheelEvent

Signals

classificationModeChanged	Classification mode changed [signal]
minimumMaximumChangedFromTree	Color ramp tree has changed [signal]
widgetChanged	Widget changed [signal]

actionEvent(self, QActionEvent)

changeEvent(self, QEvent)

childEvent(self, QChildEvent)

classificationModeChanged

Classification mode changed [signal]

Parameters

mode (QgsColorRampShader.ClassificationMode) –

classify(self)

Executes the single band pseudo raster classification

closeEvent(self, QCloseEvent)

connectNotify(self, QMetaMethod)

contextMenuEvent(self, QContextMenuEvent)

create(self, window: sip.voidptr = 0, initializeWindow: bool = True, destroyOldWindow: bool = True)

customEvent(self, QEvent)

destroy(self, destroyWindow: bool = True, destroySubWindows: bool = True)

disconnectNotify(self, QMetaMethod)

dragEnterEvent(self, QDragEnterEvent)

dragLeaveEvent(self, QDragLeaveEvent)

dragMoveEvent(self, QDragMoveEvent)

dropEvent(self, QDropEvent)

enterEvent(self, QEvent)

event(self, QEvent) → bool

focusInEvent(self, QFocusEvent)

focusNextChild(self) → bool

focusNextPrevChild(self, bool) → bool

focusOutEvent(self, QFocusEvent)

focusPreviousChild(self) → bool

hideEvent(self, QHideEvent)

initPainter(self, QPainter)

initializeForUseWithRasterLayer(self)

Allows quantile classification mode for raster layers

inputMethodEvent(self, QInputMethodEvent)

isSignalConnected(self, QMetaMethod) → bool

keyPressEvent(self, QKeyEvent)

keyReleaseEvent(self, QKeyEvent)

leaveEvent(self, QEvent)

loadMinimumMaximumFromTree(self)

Loads min and max values from color ramp tree

maximum(self) → float

Gets max value

Return type

float

metric(self, QPaintDevice.PaintDeviceMetric) → int

minimum(self) → float

Gets min value

Return type

float

minimumMaximumChangedFromTree

Color ramp tree has changed [signal]

Parameters

• minimum (float) –

• maximum (float) –

mouseDoubleClickEvent(self, QMouseEvent)

mouseMoveEvent(self, QMouseEvent)

mousePressEvent(self, QMouseEvent)

mouseReleaseEvent(self, QMouseEvent)

moveEvent(self, QMoveEvent)

nativeEvent(self, Union[QByteArray, bytes, bytearray], sip.voidptr) → Tuple[bool, int]

paintEvent(self, QPaintEvent)

populateColormapTreeWidget(self, colorRampItems: Iterable[QgsColorRampShader.ColorRampItem])

Populates color ramp tree from ramp items

Parameters

colorRampItems (Iterable[QgsColorRampShader.ColorRampItem]) –

receivers(self, PYQT_SIGNAL) → int

resizeEvent(self, QResizeEvent)

sender(self) → QObject

senderSignalIndex(self) → int

setExtent(self, extent: QgsRectangle)

Sets extent, only when used for raster layer

Parameters

extent (QgsRectangle) –

setFromShader(self, colorRampShader: QgsColorRampShader)

Sets widget state from the color ramp shader

Parameters

colorRampShader (QgsColorRampShader) –

setMinimumMaximum(self, minimum: float, maximum: float)

Sets min max

Parameters

• minimum (float) –

• maximum (float) –

setMinimumMaximumAndClassify(self, minimum: float, maximum: float)

Sets min max and classify color tree

Parameters

• minimum (float) –

• maximum (float) –

setRasterBand(self, band: int)

Sets raster band, only when used for raster layer

Parameters

band (int) –

setRasterDataProvider(self, dp: QgsRasterDataProvider)

Associates raster with the widget, only when used for raster layer

Parameters

dp (QgsRasterDataProvider) –

shader(self) → QgsColorRampShader

Returns shared function used in the renderer

Return type

QgsColorRampShader

sharedPainter(self) → QPainter

showEvent(self, QShowEvent)

tabletEvent(self, QTabletEvent)

timerEvent(self, QTimerEvent)

updateMicroFocus(self)

wheelEvent(self, QWheelEvent)

widgetChanged

Widget changed [signal]