CBCGPChartTheme

Detailed Description

The CBCGPChartTheme class stores and manages chart and series colors.

Currently the library implements 20 color themes. You can set a predefined theme using CBCGPChartVisualObject::SetColors, which accepts either one of CBCGPChartTheme::ChartTheme enumerated values (see SetColors), or externally configured theme object.

The opacity of series colors should be specified using CBCGPChartTheme::SetOpacity. In this way a diagram can display transparent data point shapes without rebuilding the whole theme. However, the recommended way to change the opacity at the runtime is calling CBCGPChartVisualObject::SetThemeOpacity.

Note. The opacity of surface series should be changed using CBCGPChartSurfaceSeries::SetSurfaceOpacity.

Please refer BCGPChartExample (BCGPChartExample.cpp, methods SetupCustomColorTheme and InitSeriesColors) for more information about custom color themes.

BCGPChartExampleView.h, UpdateChartColorTheme method illustrates how to select a color theme for a chart.

Inheritance diagram for CBCGPChartTheme:

Public Member Functions
	CBCGPChartTheme	Constructs a theme object.
	CBCGPChartTheme	Constructs a theme object.
	GetOpacity	Returns opacity of series fill colors.
	GetSeriesColors	Returns colors used to display series elements (shapes, data labels etc).
	GetThemeType	Returns theme color scheme.
	IsVisualManagerTheme	Tells whether the chart has a Visual Manager-based color theme.
	SetOpacity	Sets theme opacity.
	SetTheme	Initializes a theme object with predefined color set.
	SetVisualManagerTheme	Specifies whether the chart has a Visual Manager-based color theme.

Static Public Member Functions
	InitChartColors	Generates a color scheme based on a set of basic colors.

Public Attributes
	m_dblColorChangeStep	A value used to generate color shades for series.
	m_seriesColors	Contains descriptions for series colors.