#include <qgscolorrampshader.h>
Inheritance diagram for QgsColorRampShader:
Definition at line 32 of file qgscolorrampshader.h.
Public Types | |
| enum | ColorRamp_TYPE { INTERPOLATED, DISCRETE, EXACT } |
Public Member Functions | |
| QgsColorRampShader (double theMinimumValue=0.0, double theMaximumValue=255.0) | |
| QList< QgsColorRampShader::ColorRampItem > | colorRampItemList () const |
| Get the custom colormap. | |
| QgsColorRampShader::ColorRamp_TYPE | colorRampType () |
| Get the color ramp type. | |
| QString | colorRampTypeAsQString () |
| Get the color ramp type as a string. | |
| int | maximumColorCacheSize () |
| Get the maximum size the color cache can be. | |
| void | setColorRampItemList (const QList< QgsColorRampShader::ColorRampItem > &theList) |
| Set custom colormap. | |
| void | setColorRampType (QgsColorRampShader::ColorRamp_TYPE theColorRampType) |
| Set the color ramp type. | |
| void | setColorRampType (QString) |
| Set the color ramp type. | |
| void | setMaximumColorCacheSize (int theSize) |
| Set the maximum size the color cache can be. | |
| bool | shade (double, int *, int *, int *) |
| Generates and new RGB value based on one input value. | |
| bool | shade (double, double, double, int *, int *, int *) |
| Generates and new RGB value based on original RGB value. | |
Private Member Functions | |
| bool | discreteColor (double, int *, int *, int *) |
| Gets the color for a pixel value from the classification vector mValueClassification. | |
| bool | exactColor (double, int *, int *, int *) |
| Gets the color for a pixel value from the classification vector mValueClassification. | |
| bool | interpolatedColor (double, int *, int *, int *) |
| Gets the color for a pixel value from the classification vector mValueClassification. | |
Private Attributes | |
| int | mCurrentColorRampItemIndex |
| Current index from which to start searching the color table. | |
| QList< QgsColorRampShader::ColorRampItem > | mColorRampItemList |
| This vector holds the information for classification based on values. | |
| QgsColorRampShader::ColorRamp_TYPE | mColorRampType |
| The color ramp type. | |
| QMap< double, QColor > | mColorCache |
| Cache of values that have already been looked up. | |
| int | mMaximumColorCacheSize |
| Maximum size of the color cache. | |
Classes | |
| struct | ColorRampItem |
| QgsColorRampShader::QgsColorRampShader | ( | double | theMinimumValue = 0.0, |
|
| double | theMaximumValue = 255.0 | |||
| ) |
Definition at line 25 of file qgscolorrampshader.cpp.
References mCurrentColorRampItemIndex, mMaximumColorCacheSize, and QgsDebugMsg.
| QList<QgsColorRampShader::ColorRampItem> QgsColorRampShader::colorRampItemList | ( | ) | const [inline] |
Get the custom colormap.
Definition at line 57 of file qgscolorrampshader.h.
Referenced by QgsRasterLayer::paletteAsPixmap().
| QgsColorRampShader::ColorRamp_TYPE QgsColorRampShader::colorRampType | ( | ) | [inline] |
| QString QgsColorRampShader::colorRampTypeAsQString | ( | ) |
Get the color ramp type as a string.
Definition at line 32 of file qgscolorrampshader.cpp.
References DISCRETE, EXACT, INTERPOLATED, and mColorRampType.
| int QgsColorRampShader::maximumColorCacheSize | ( | ) | [inline] |
| void QgsColorRampShader::setColorRampItemList | ( | const QList< QgsColorRampShader::ColorRampItem > & | theList | ) | [inline] |
Set custom colormap.
Definition at line 69 of file qgscolorrampshader.h.
Referenced by QgsRasterLayer::paletteAsPixmap(), and QgsRasterLayer::readFile().
| void QgsColorRampShader::setColorRampType | ( | QgsColorRampShader::ColorRamp_TYPE | theColorRampType | ) |
Set the color ramp type.
Definition at line 201 of file qgscolorrampshader.cpp.
References mColorCache, and mColorRampType.
Referenced by QgsRasterLayer::paletteAsPixmap(), and QgsRasterLayer::readFile().
| void QgsColorRampShader::setColorRampType | ( | QString | ) |
Set the color ramp type.
Definition at line 208 of file qgscolorrampshader.cpp.
References DISCRETE, EXACT, INTERPOLATED, mColorCache, and mColorRampType.
| void QgsColorRampShader::setMaximumColorCacheSize | ( | int | theSize | ) | [inline] |
| bool QgsColorRampShader::shade | ( | double | , | |
| int * | , | |||
| int * | , | |||
| int * | ||||
| ) | [virtual] |
Generates and new RGB value based on one input value.
Reimplemented from QgsRasterShaderFunction.
Definition at line 226 of file qgscolorrampshader.cpp.
References discreteColor(), EXACT, exactColor(), INTERPOLATED, interpolatedColor(), mColorCache, mColorRampItemList, mColorRampType, and mCurrentColorRampItemIndex.
Referenced by QgsRasterLayer::paletteAsPixmap().
| bool QgsColorRampShader::shade | ( | double | , | |
| double | , | |||
| double | , | |||
| int * | , | |||
| int * | , | |||
| int * | ||||
| ) | [virtual] |
Generates and new RGB value based on original RGB value.
Reimplemented from QgsRasterShaderFunction.
Definition at line 263 of file qgscolorrampshader.cpp.
| bool QgsColorRampShader::discreteColor | ( | double | , | |
| int * | , | |||
| int * | , | |||
| int * | ||||
| ) | [private] |
Gets the color for a pixel value from the classification vector mValueClassification.
Assigns the color of the lower class for every pixel between two class breaks.
Definition at line 49 of file qgscolorrampshader.cpp.
References QgsColorRampShader::ColorRampItem::color, mColorCache, mColorRampItemList, mCurrentColorRampItemIndex, mMaximumColorCacheSize, and QgsColorRampShader::ColorRampItem::value.
Referenced by shade().
| bool QgsColorRampShader::exactColor | ( | double | , | |
| int * | , | |||
| int * | , | |||
| int * | ||||
| ) | [private] |
Gets the color for a pixel value from the classification vector mValueClassification.
Assigns the color of the exact matching value in the color ramp item list
Definition at line 89 of file qgscolorrampshader.cpp.
References QgsColorRampShader::ColorRampItem::color, mColorCache, mColorRampItemList, mCurrentColorRampItemIndex, mMaximumColorCacheSize, and QgsColorRampShader::ColorRampItem::value.
Referenced by shade().
| bool QgsColorRampShader::interpolatedColor | ( | double | , | |
| int * | , | |||
| int * | , | |||
| int * | ||||
| ) | [private] |
Gets the color for a pixel value from the classification vector mValueClassification.
Interpolates the color between two class breaks linearly.
Definition at line 134 of file qgscolorrampshader.cpp.
References QgsColorRampShader::ColorRampItem::color, mColorCache, mColorRampItemList, mCurrentColorRampItemIndex, mMaximumColorCacheSize, and QgsColorRampShader::ColorRampItem::value.
Referenced by shade().
int QgsColorRampShader::mCurrentColorRampItemIndex [private] |
Current index from which to start searching the color table.
Definition at line 88 of file qgscolorrampshader.h.
Referenced by discreteColor(), exactColor(), interpolatedColor(), QgsColorRampShader(), and shade().
QList<QgsColorRampShader::ColorRampItem> QgsColorRampShader::mColorRampItemList [private] |
This vector holds the information for classification based on values.
Each item holds a value, a label and a color. The member mDiscreteClassification holds if one color is applied for all values between two class breaks (true) or if the item values are (linearly) interpolated for values between the item values (false)
Definition at line 92 of file qgscolorrampshader.h.
Referenced by discreteColor(), exactColor(), interpolatedColor(), and shade().
The color ramp type.
Definition at line 95 of file qgscolorrampshader.h.
Referenced by colorRampTypeAsQString(), setColorRampType(), and shade().
QMap<double, QColor> QgsColorRampShader::mColorCache [private] |
Cache of values that have already been looked up.
Definition at line 98 of file qgscolorrampshader.h.
Referenced by discreteColor(), exactColor(), interpolatedColor(), setColorRampType(), and shade().
int QgsColorRampShader::mMaximumColorCacheSize [private] |
Maximum size of the color cache.
The color cache could eat a ton of memory if you have 32-bit data
Definition at line 101 of file qgscolorrampshader.h.
Referenced by discreteColor(), exactColor(), interpolatedColor(), and QgsColorRampShader().
1.5.1