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| * Licensed to the Apache Software Foundation (ASF) under one |
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| * distributed with this work for additional information |
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| * to you under the Apache License, Version 2.0 (the |
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| * software distributed under the License is distributed on an |
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| * KIND, either express or implied. See the License for the |
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| |
| |
| #ifndef __com_sun_star_rendering_CompositeOperation_idl__ |
| #define __com_sun_star_rendering_CompositeOperation_idl__ |
| |
| module com { module sun { module star { module rendering { |
| |
| /** These constants determine how the primitive color is combined with |
| the background.<p> |
| |
| When performing this calculations, it is assumed that all color |
| values are premultiplied with the corresponding alpha values (if |
| no alpha is specified, 1.0 is assumed). Then, the following |
| general compositing operation is performed: |
| <p> |
| C = Ca * Fa + Cb * Fb |
| <p> |
| where C is the result color, Ca and Cb are the input colors, |
| premultiplied with alpha, and Fa and Fb are described for the |
| different composite modes (wherein Aa and Ab denote source and |
| destination alpha, respectively).<p> |
| |
| @since OpenOffice 2.0 |
| */ |
| constants CompositeOperation |
| { |
| /** Clear the destination.<p> |
| |
| Clear the destination area. The function values are: Fa = Fb = |
| 0.<p> |
| */ |
| const byte CLEAR = 0; |
| |
| /** Copy source as-is to the destination.<p> |
| |
| Copy source as-is to the destination. The function values are: |
| Fa = 1, Fb = 0.<p> |
| */ |
| const byte SOURCE = 1; |
| |
| /** Leave the destination as-is.<p> |
| |
| Leave the destination as-is. The function values are: Fa = 0, |
| Fb = 1.<p> |
| */ |
| const byte DESTINATION = 2; |
| |
| /** Copy the source over the destination.<p> |
| |
| Copy the source over the destination. The function values are: |
| Fa = 1, Fb = 1-Aa.<p> |
| */ |
| const byte OVER = 3; |
| |
| /** Copy the source under the destination.<p> |
| |
| Copy the source under the destination. The function values |
| are: Fa = 1-Ab, Fb = 1.<p> |
| */ |
| const byte UNDER = 4; |
| |
| /** Copy the source to the destination.<p> |
| |
| Copy the source to the destination, but limited to where the |
| destination is. The function values are: Fa = Ab, Fb = 0.<p> |
| */ |
| const byte INSIDE = 5; |
| |
| /** Leave the destination as is.<p> |
| |
| Leave the destination as is, but only where the source |
| was. The function values are: Fa = 0, Fb = Aa.<p> |
| */ |
| const byte INSIDE_REVERSE = 6; |
| |
| /** Copy the source to the destination<p> |
| |
| Copy the source to the destination, but limited to where the |
| destination is not. The function values are: Fa = 1-Ab, Fb = |
| 0.<p> |
| */ |
| const byte OUTSIDE = 7; |
| |
| /** Leave the destination as is.<p> |
| |
| Leave the destination as is, but only where the source has not |
| been. The function values are: Fa = 0, Fb = 1-Aa.<p> |
| */ |
| const byte OUTSIDE_REVERSE = 8; |
| |
| /** Copy the source over the destination<p> |
| |
| Copy the source over the destination, but only where the |
| destination is. Keep the destination. The function values are: |
| Fa = Ab, Fb = 1-Aa.<p> |
| */ |
| const byte ATOP = 9; |
| |
| /** Copy the destination over the source.<p> |
| |
| Copy the destination over the source, but only where the |
| source is. Keep the source. The function values are: Fa = |
| 1-Ab, Fb = Aa.<p> |
| */ |
| const byte ATOP_REVERSE = 10; |
| |
| /** Combine source and destination by exclusive or.<p> |
| |
| Take only the parts where either source or destination, but |
| not both visible. The function values are: Fa = 1-Ab, Fb = |
| 1-Aa.<p> |
| */ |
| const byte XOR = 11; |
| |
| /** Add source and destination values.<p> |
| |
| Simply add contributions of both source and destination. The |
| resulting color values are limited to the permissible color |
| range, and clipped to the maximal value, if exceeded. The |
| function values are: Fa = 1, Fb = 1.<p> |
| */ |
| const byte ADD = 12; |
| |
| /** Saturate source and destination.<p> |
| |
| Saturate destination with source values. The function values |
| are: Fa = min(1,(1-Ab)/Aa), Fb = 1<p> |
| */ |
| const byte SATURATE = 13; |
| }; |
| |
| }; }; }; }; |
| |
| #endif |