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2. Qt 5.9.9
3. Qt Data Visualization
4. C++ 类
5. Q3DTheme

Q3DTheme *theme = new Q3DTheme(Q3DTheme::ThemeQt);
					

Q3DTheme *theme = new Q3DTheme(Q3DTheme::ThemeQt);
theme->setBackgroundEnabled(false);
theme->setLabelBackgroundEnabled(false);
					

Q3DTheme *theme = new Q3DTheme();
theme->setAmbientLightStrength(0.3f);
theme->setBackgroundColor(QColor(QRgb(0x99ca53)));
theme->setBackgroundEnabled(true);
theme->setBaseColor(QColor(QRgb(0x209fdf)));
theme->setColorStyle(Q3DTheme::ColorStyleUniform);
theme->setFont(QFont(QStringLiteral("Impact"), 35));
theme->setGridEnabled(true);
theme->setGridLineColor(QColor(QRgb(0x99ca53)));
theme->setHighlightLightStrength(7.0f);
theme->setLabelBackgroundColor(QColor(0xf6, 0xa6, 0x25, 0xa0));
theme->setLabelBackgroundEnabled(true);
theme->setLabelBorderEnabled(true);
theme->setLabelTextColor(QColor(QRgb(0x404044)));
theme->setLightColor(Qt::white);
theme->setLightStrength(6.0f);
theme->setMultiHighlightColor(QColor(QRgb(0x6d5fd5)));
theme->setSingleHighlightColor(QColor(QRgb(0xf6a625)));
theme->setWindowColor(QColor(QRgb(0xffffff)));
					

Q3DBars *graph = new Q3DBars();
graph->activeTheme()->setType(Q3DTheme::ThemePrimaryColors);
graph->activeTheme()->setBaseColor(Qt::red);
graph->activeTheme()->setSingleHighlightColor(Qt::yellow);
					

baseGradients : QList < QLinearGradient >

This property holds the list of base gradients to be used for all the objects in the graph, series by series.

If there are more series than gradients, the gradient list wraps and starts again with the first gradient in the list

Has no immediate effect if colorStyle is ColorStyleUniform .

This value can be overridden by setting the baseGradient explicitly in the series.

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colorStyle : ColorStyle

此特性保持图形颜色的样式。

One of the ColorStyle 枚举值。

This value can be overridden by setting colorStyle explicitly in the series.

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font : QFont

此特性保持用于标签的字体。

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gridEnabled : bool

此特性保持是否绘制栅格线。

此值影响所有栅格线。

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gridLineColor : QColor

此特性保持栅格线的颜色。

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highlightLightStrength : float

此特性保持用于选中对象的镜面光强度。

值必须介于 0.0f and 10.0f .

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labelBackgroundColor : QColor

此特性保持标签背景的颜色。

没有影响若 labelBackgroundEnabled is false .

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labelBackgroundEnabled : bool

This property holds whether the label is drawn with a color background or with a fully transparent background.

labelBackgroundColor value (including alpha) is used for drawing the background.

Labels with a background are drawn to equal sizes per axis based on the longest label, and the text is centered in them. Labels without a background are drawn as is and are left or right aligned based on their position in the graph.

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labelBorderEnabled : bool

此特性保持是否为拥有背景的标签绘制标签边框。

没有影响若 labelBackgroundEnabled is false .

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labelTextColor : QColor

此特性保持用于标签的字体颜色。

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lightColor : QColor

This property holds the color for the ambient and specular light.

This value affects the light specified in Q3DScene .

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lightStrength : float

This property holds the specular light strength for the whole graph.

值必须介于 0.0f and 10.0f .

This value affects the light specified in Q3DScene .

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multiHighlightColor : QColor

This property holds the highlight color for selected objects.

Used if selectionMode 拥有 QAbstract3DGraph::SelectionRow or QAbstract3DGraph::SelectionColumn flag set.

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multiHighlightGradient : QLinearGradient

This property holds the highlight gradient for selected objects.

Used if selectionMode 拥有 QAbstract3DGraph::SelectionRow or QAbstract3DGraph::SelectionColumn flag set.

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singleHighlightColor : QColor

This property holds the highlight color for a selected object.

Used if selectionMode 拥有 QAbstract3DGraph::SelectionItem flag set.

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singleHighlightGradient : QLinearGradient

This property holds the highlight gradient for a selected object.

Used if selectionMode 拥有 QAbstract3DGraph::SelectionItem flag set.

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type : Theme

此特性保持主题的类型。

The type is automatically set when constructing a theme, but can also be changed later. Changing the theme type will change all other properties of the theme to what the predefined theme specifies. Changing the theme type of the active theme of the graph will also reset all attached series to use the new theme.

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windowColor : QColor

This property holds the color of the application window the graph is drawn into.

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Q3DTheme:: Q3DTheme ( QObject * parent = Q_NULLPTR)

构造新主题为类型 ThemeUserDefined 。可选 parent 参数可以给出，然后会被传递给 QObject 构造函数。

Q3DTheme:: Q3DTheme ( Theme themeType , QObject * parent = Q_NULLPTR)

构造新的主题采用 themeType ，可以是某一内置主题来自 Theme 。可选 parent 参数可以给出，然后会被传递给 QObject 构造函数。

[virtual] Q3DTheme:: ~Q3DTheme ()

销毁主题。