QPalette ¶

概要 ¶

详细描述 ¶

A palette consists of three color groups: Active , Disabled ，和 Inactive . All widgets in Qt contain a palette and use their palette to draw themselves. This makes the user interface easily configurable and easier to keep consistent.

If you create a new widget we strongly recommend that you use the colors in the palette rather than hard-coding specific colors.

The color groups:

• The Active group is used for the window that has keyboard focus.

• The Inactive group is used for other windows.

• The Disabled group is used for widgets (not windows) that are disabled for some reason.

Both active and inactive windows can contain disabled widgets. (Disabled widgets are often called inaccessible or grayed out .)

In most styles, Active and Inactive look the same.

Colors and brushes can be set for particular roles in any of a palette’s color groups with setColor() and setBrush() . A color group contains a group of colors used by widgets for drawing themselves. We recommend that widgets use color group roles from the palette such as “foreground” and “base” rather than literal colors like “red” or “turquoise”. The color roles are enumerated and defined in the ColorRole 文档编制。

We strongly recommend that you use the default palette of the current style (returned by palette() ) and modify that as necessary. This is done by Qt’s widgets when they are drawn.

To modify a color group you call the functions setColor() and setBrush() , depending on whether you want a pure color or a pixmap pattern.

There are also corresponding color() and brush() getters, and a commonly used convenience function to get the ColorRole for the current ColorGroup : window() , windowText() , base() ，等。

You can copy a palette using the copy constructor and test to see if two palettes are identical 使用 isCopyOf() .

QPalette is optimized by the use of 隐式共享 , so it is very efficient to pass QPalette objects as arguments.

警告

Some styles do not use the palette for all drawing, for instance, if they make use of native theme engines. This is the case for both the Windows Vista and the macOS styles.

另请参阅

setPalette() setPalette() QColor

class QPalette ¶

QPalette(button)

QPalette(windowText, button, light, dark, mid, text, bright_text, base, window)

QPalette(button)

QPalette(button, window)

QPalette(windowText, window, light, dark, mid, text, base)

QPalette(palette)

param palette

QPalette

param windowText

QBrush

param mid

QBrush

param base

QBrush

param bright_text

QBrush

param button

GlobalColor

param dark

QBrush

param light

QBrush

param text

QBrush

param window

QBrush

Constructs a palette object that uses the application’s default palette.

另请参阅

setPalette() palette()

Constructs a palette from the button color. The other colors are automatically calculated, based on this color. Window will be the button color as well.

Constructs a palette. You can pass either brushes, pixmaps or plain colors for windowText , button , light , dark , mid , text , bright_text , base and window .

另请参阅

QBrush

Constructs a palette from a button color and a window . The other colors are automatically calculated, based on these colors.

Constructs a palette with the specified windowText , window , light , dark , mid , text ，和 base colors. The button color will be set to the window color.

PySide2.QtGui.QPalette. ColorGroup ¶

常量	描述
QPalette.Disabled
QPalette.Active
QPalette.Inactive
QPalette.Normal	synonym for Active

PySide2.QtGui.QPalette. ColorRole ¶

The enum defines the different symbolic color roles used in current GUIs.

The central roles are:

常量	描述
QPalette.Window	A general background color.
QPalette.Background	This value is obsolete. Use Window instead.
QPalette.WindowText	A general foreground color.
QPalette.Foreground	This value is obsolete. Use instead.
QPalette.Base	Used mostly as the background color for text entry widgets, but can also be used for other painting - such as the background of combobox drop down lists and toolbar handles. It is usually white or another light color.
QPalette.AlternateBase	Used as the alternate background color in views with alternating row colors (see setAlternatingRowColors() ).
QPalette.ToolTipBase	Used as the background color for QToolTip and QWhatsThis . Tool tips use the Inactive color group of QPalette , because tool tips are not active windows.
QPalette.ToolTipText	Used as the foreground color for QToolTip and QWhatsThis . Tool tips use the Inactive color group of QPalette , because tool tips are not active windows.
QPalette.PlaceholderText	Used as the placeholder color for various text input widgets. This enum value has been introduced in Qt 5.12
QPalette.Text	The foreground color used with Base . This is usually the same as the WindowText , in which case it must provide good contrast with Window and Base .
QPalette.Button	The general button background color. This background can be different from Window as some styles require a different background color for buttons.
QPalette.ButtonText	A foreground color used with the Button 颜色。
QPalette.BrightText	A text color that is very different from WindowText , and contrasts well with e.g. Dark . Typically used for text that needs to be drawn where 文本 or WindowText would give poor contrast, such as on pressed push buttons. Note that text colors can be used for things other than just words; text colors are usually used for text, but it’s quite common to use the text color roles for lines, icons, etc.

There are some color roles used mostly for 3D bevel and shadow effects. All of these are normally derived from Window , and used in ways that depend on that relationship. For example, buttons depend on it to make the bevels look attractive, and Motif scroll bars depend on Mid to be slightly different from Window .

常量	描述
QPalette.Light	Lighter than Button 颜色。
QPalette.Midlight	Between Button and Light .
QPalette.Dark	Darker than Button .
QPalette.Mid	Between Button and Dark .
QPalette.Shadow	A very dark color. By default, the shadow color is black .

Selected (marked) items have two roles:

常量	描述
QPalette.Highlight	A color to indicate a selected item or the current item. By default, the highlight color is darkBlue .
QPalette.HighlightedText	A text color that contrasts with Highlight . By default, the highlighted text color is white .

There are two color roles related to hyperlinks:

常量	描述
QPalette.Link	A text color used for unvisited hyperlinks. By default, the link color is blue .
QPalette.LinkVisited	A text color used for already visited hyperlinks. By default, the linkvisited color is magenta .

Note that we do not use the Link and LinkVisited roles when rendering rich text in Qt, and that we recommend that you use CSS and the setDefaultStyleSheet() function to alter the appearance of links. For example:

browser = QTextBrowser()
linkColor = QColor(Qt.red)
sheet = QString.fromLatin1("a { text-decoration: underline color: %1 }").arg(linkColor.name())
browser.document().setDefaultStyleSheet(sheet)
											

常量	描述
QPalette.NoRole	No role; this special role is often used to indicate that a role has not been assigned.

PySide2.QtGui.QPalette. alternateBase ( ) ¶

返回类型

QBrush

Returns the alternate base brush of the current color group.

另请参阅

ColorRole brush()

PySide2.QtGui.QPalette. background ( ) ¶

返回类型

QBrush

注意

此函数被弃用。

使用 window() 代替。

PySide2.QtGui.QPalette. base ( ) ¶

返回类型

QBrush

Returns the base brush of the current color group.

另请参阅

ColorRole brush()

PySide2.QtGui.QPalette. brightText ( ) ¶

返回类型

QBrush

Returns the bright text foreground brush of the current color group.

另请参阅

ColorRole brush()

PySide2.QtGui.QPalette. brush ( cg , cr ) ¶

参数

• cg – ColorGroup

• cr – ColorRole

返回类型

QBrush

Returns the brush in the specified color group , used for the given color role .

另请参阅

color() setBrush() ColorRole

PySide2.QtGui.QPalette. brush ( cr ) ¶

参数

cr – ColorRole

返回类型

QBrush

这是重载函数。

Returns the brush that has been set for the given color role in the current ColorGroup .

另请参阅

color() setBrush() ColorRole

PySide2.QtGui.QPalette. button ( ) ¶

返回类型

QBrush

Returns the button brush of the current color group.

另请参阅

ColorRole brush()

PySide2.QtGui.QPalette. buttonText ( ) ¶

返回类型

QBrush

Returns the button text foreground brush of the current color group.

另请参阅

ColorRole brush()

PySide2.QtGui.QPalette. cacheKey ( ) ¶

返回类型

qint64

Returns a number that identifies the contents of this QPalette object. Distinct QPalette objects can have the same key if they refer to the same contents.

The will change when the palette is altered.

PySide2.QtGui.QPalette. color ( cg , cr ) ¶

参数

• cg – ColorGroup

• cr – ColorRole

返回类型

QColor

Returns the color in the specified color group , used for the given color role .

另请参阅

brush() setColor() ColorRole

PySide2.QtGui.QPalette. color ( cr ) ¶

参数

cr – ColorRole

返回类型

QColor

这是重载函数。

Returns the color that has been set for the given color role in the current ColorGroup .

另请参阅

brush() ColorRole

PySide2.QtGui.QPalette. currentColorGroup ( ) ¶

返回类型

ColorGroup

Returns the palette’s current color group.

另请参阅

setCurrentColorGroup()

PySide2.QtGui.QPalette. dark ( ) ¶

返回类型

QBrush

Returns the dark brush of the current color group.

另请参阅

ColorRole brush()

PySide2.QtGui.QPalette. foreground ( ) ¶

返回类型

QBrush

注意

此函数被弃用。

使用 windowText() 代替。

PySide2.QtGui.QPalette. highlight ( ) ¶

返回类型

QBrush

Returns the highlight brush of the current color group.

另请参阅

ColorRole brush()

PySide2.QtGui.QPalette. highlightedText ( ) ¶

返回类型

QBrush

Returns the highlighted text brush of the current color group.

另请参阅

ColorRole brush()

PySide2.QtGui.QPalette. isBrushSet ( cg , cr ) ¶

参数

• cg – ColorGroup

• cr – ColorRole

返回类型

bool

返回 true 若 ColorGroup cg and ColorRole cr has been set previously on this palette; otherwise returns false .

另请参阅

setBrush()

PySide2.QtGui.QPalette. isCopyOf ( p ) ¶

参数

p – QPalette

返回类型

bool

返回 true if this palette and p are copies of each other, i.e. one of them was created as a copy of the other and neither was subsequently modified; otherwise returns false . This is much stricter than equality.

另请参阅

operator=() operator==()

PySide2.QtGui.QPalette. isEqual ( cr1 , cr2 ) ¶

参数

• cr1 – ColorGroup

• cr2 – ColorGroup

返回类型

bool

返回 true (usually quickly) if color group cg1 等于 cg2 ；否则返回 false .

PySide2.QtGui.QPalette. light ( ) ¶

返回类型

QBrush

Returns the light brush of the current color group.

另请参阅

ColorRole brush()

PySide2.QtGui.QPalette. link ( ) ¶

返回类型

QBrush

Returns the unvisited link text brush of the current color group.

另请参阅

ColorRole brush()

PySide2.QtGui.QPalette. linkVisited ( ) ¶

返回类型

QBrush

Returns the visited link text brush of the current color group.

另请参阅

ColorRole brush()

PySide2.QtGui.QPalette. mid ( ) ¶

返回类型

QBrush

Returns the mid brush of the current color group.

另请参阅

ColorRole brush()

PySide2.QtGui.QPalette. midlight ( ) ¶

返回类型

QBrush

Returns the midlight brush of the current color group.

另请参阅

ColorRole brush()

PySide2.QtGui.QPalette. __ne__ ( p ) ¶

参数

p – QPalette

返回类型

bool

返回 true (slowly) if this palette is different from p ；否则返回 false (usually quickly).

注意

The current ColorGroup is not taken into account when comparing palettes

另请参阅

operator==()

PySide2.QtGui.QPalette. __eq__ ( p ) ¶

参数

p – QPalette

返回类型

bool

返回 true (usually quickly) if this palette is equal to p ；否则返回 false (slowly).

注意

The current ColorGroup is not taken into account when comparing palettes

另请参阅

operator!=()

PySide2.QtGui.QPalette. placeholderText ( ) ¶

返回类型

QBrush

Returns the placeholder text brush of the current color group.

注意

Before Qt 5.12, the placeholder text color was hard-coded in the code as text() . color() where an alpha of 128 was applied. We continue to support this behavior by default, unless you set your own brush. One can get back the original placeholder color setting the special QBrush default constructor as placeholder brush.

另请参阅

ColorRole brush()

PySide2.QtGui.QPalette. resolve ( ) ¶

返回类型

uint

PySide2.QtGui.QPalette. resolve ( arg__1 ) ¶

参数

arg__1 – QPalette

返回类型

QPalette

返回新 QPalette that is a union of this instance and other . Color roles set in this instance take precedence.

PySide2.QtGui.QPalette. resolve ( mask ) ¶

参数

mask – uint

PySide2.QtGui.QPalette. setBrush ( cr , brush ) ¶

参数

• cr – ColorRole

• brush – QBrush

Sets the brush for the given color role 到指定 brush for all groups in the palette.

另请参阅

brush() setColor() ColorRole

PySide2.QtGui.QPalette. setBrush ( cg , cr , brush ) ¶

参数

• cg – ColorGroup

• cr – ColorRole

• brush – QBrush

这是重载函数。

Sets the brush in the specified color group , used for the given color role ，到 brush .

另请参阅

brush() setColor() ColorRole

PySide2.QtGui.QPalette. setColor ( cg , cr , color ) ¶

参数

• cg – ColorGroup

• cr – ColorRole

• color – QColor

Sets the color in the specified color group , used for the given color role , to the specified solid color .

另请参阅

setBrush() color() ColorRole

PySide2.QtGui.QPalette. setColor ( cr , color ) ¶

参数

• cr – ColorRole

• color – QColor

这是重载函数。

Sets the color used for the given color role , in all color groups, to the specified solid color .

另请参阅

brush() setColor() ColorRole

PySide2.QtGui.QPalette. setColorGroup ( cr , windowText , button , light , dark , mid , text , bright_text , base , window ) ¶

参数

• cr – ColorGroup

• windowText – QBrush

• button – QBrush

• light – QBrush

• dark – QBrush

• mid – QBrush

• text – QBrush

• bright_text – QBrush

• base – QBrush

• window – QBrush

Sets a the group at cg . You can pass either brushes, pixmaps or plain colors for windowText , button , light , dark , mid , text , bright_text , base and window .

另请参阅

QBrush

PySide2.QtGui.QPalette. setCurrentColorGroup ( cg ) ¶

参数

cg – ColorGroup

Set the palette’s current color group to cg .

另请参阅

currentColorGroup()

PySide2.QtGui.QPalette. shadow ( ) ¶

返回类型

QBrush

Returns the shadow brush of the current color group.

另请参阅

ColorRole brush()

PySide2.QtGui.QPalette. swap ( other ) ¶

参数

other – QPalette

Swaps this palette instance with other 。此函数非常快，且从不失败。

PySide2.QtGui.QPalette. text ( ) ¶

返回类型

QBrush

Returns the text foreground brush of the current color group.

另请参阅

ColorRole brush()

PySide2.QtGui.QPalette. toolTipBase ( ) ¶

返回类型

QBrush

Returns the tool tip base brush of the current color group. This brush is used by QToolTip and QWhatsThis .

注意

Tool tips use the Inactive color group of QPalette , because tool tips are not active windows.

另请参阅

ColorRole brush()

PySide2.QtGui.QPalette. toolTipText ( ) ¶

返回类型

QBrush

Returns the tool tip text brush of the current color group. This brush is used by QToolTip and QWhatsThis .

注意

Tool tips use the Inactive color group of QPalette , because tool tips are not active windows.

另请参阅

ColorRole brush()

PySide2.QtGui.QPalette. window ( ) ¶

返回类型

QBrush

Returns the window (general background) brush of the current color group.

另请参阅

ColorRole brush()

PySide2.QtGui.QPalette. windowText ( ) ¶

返回类型

QBrush

Returns the window text (general foreground) brush of the current color group.

另请参阅

ColorRole brush()