#include <cartotype_graphics.h>
Public Member Functions | |
| virtual TColor | Foreground (int32 aIndex) const =0 |
| virtual TColor | Background (int32 aIndex) const =0 |
| virtual int32 | Count () const =0 |
| virtual int32 | AddEntry (TResult &aError, TColor aForeground, TColor aBackground)=0 |
Detailed Description
A palette supplies a foreground and background colors for a given color index. The foreground is blended with the background before blending with the destination.
Member Function Documentation
| virtual int32 CartoType::MPalette::AddEntry | ( | TResult & | aError, |
| TColor | aForeground, | ||
| TColor | aBackground | ||
| ) | [pure virtual] |
Add a new entry if possible, returning its index. If the combination of foreground and background colors already exists in the palette, returns its index. Return 0 and set aError if the operation fails.
Implemented in CartoType::TSimplePalette< aColors >, and CartoType::TSimplePalette< 16 >.
| virtual TColor CartoType::MPalette::Background | ( | int32 | aIndex | ) | const [pure virtual] |
Supply a background for color index aIndex. If the 'null color' KTransparentBlack is supplied no background is drawn.
Implemented in CartoType::TSimplePalette< aColors >, and CartoType::TSimplePalette< 16 >.
| virtual int32 CartoType::MPalette::Count | ( | ) | const [pure virtual] |
Return the number of entries in the palette.
Implemented in CartoType::TSimplePalette< aColors >, and CartoType::TSimplePalette< 16 >.
| virtual TColor CartoType::MPalette::Foreground | ( | int32 | aIndex | ) | const [pure virtual] |
Supply a color for color index aIndex.
Implemented in CartoType::TSimplePalette< aColors >, and CartoType::TSimplePalette< 16 >.
The documentation for this class was generated from the following file:
- cartotype_graphics.h
