| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| /* $Id$ */ |
| |
| package org.apache.fop.pdf; |
| |
| /** |
| * Represents a device-specific color space. Used for mapping DeviceRGB, DeviceCMYK and DeviceGray. |
| */ |
| public class PDFDeviceColorSpace implements PDFColorSpace { |
| |
| private int numComponents; |
| |
| /** |
| * Unknown colorspace |
| */ |
| public static final int DEVICE_UNKNOWN = -1; |
| |
| /** |
| * Gray colorspace |
| */ |
| public static final int DEVICE_GRAY = 1; |
| |
| /** |
| * RGB colorspace |
| */ |
| public static final int DEVICE_RGB = 2; |
| |
| /** |
| * CMYK colorspace |
| */ |
| public static final int DEVICE_CMYK = 3; |
| |
| // Are there any others? |
| |
| /** |
| * Current color space value. |
| */ |
| protected int currentColorSpace = DEVICE_UNKNOWN; |
| |
| /** |
| * Create a PDF colorspace object. |
| * |
| * @param theColorSpace the current colorspace |
| */ |
| public PDFDeviceColorSpace(int theColorSpace) { |
| this.currentColorSpace = theColorSpace; |
| numComponents = calculateNumComponents(); |
| } |
| |
| private int calculateNumComponents() { |
| if (currentColorSpace == DEVICE_GRAY) { |
| return 1; |
| } else if (currentColorSpace == DEVICE_RGB) { |
| return 3; |
| } else if (currentColorSpace == DEVICE_CMYK) { |
| return 4; |
| } else { |
| return 0; |
| } |
| } |
| |
| /** |
| * Set the current colorspace. |
| * |
| * @param theColorSpace the new color space value |
| */ |
| public void setColorSpace(int theColorSpace) { |
| this.currentColorSpace = theColorSpace; |
| numComponents = calculateNumComponents(); |
| } |
| |
| /** |
| * Get the colorspace value |
| * |
| * @return the colorspace value |
| */ |
| public int getColorSpace() { |
| return (this.currentColorSpace); |
| } |
| |
| /** |
| * Get the number of color components for this colorspace |
| * |
| * @return the number of components |
| */ |
| public int getNumComponents() { |
| return numComponents; |
| } |
| |
| /** @return the name of the color space */ |
| public String getName() { |
| switch (currentColorSpace) { |
| case DEVICE_CMYK: |
| return "DeviceCMYK"; |
| case DEVICE_GRAY: |
| return "DeviceGray"; |
| case DEVICE_RGB: |
| return "DeviceRGB"; |
| default: |
| throw new IllegalStateException("Unsupported color space in use."); |
| } |
| } |
| |
| /** {@inheritDoc} */ |
| public boolean isDeviceColorSpace() { |
| return true; |
| } |
| |
| /** {@inheritDoc} */ |
| public boolean isRGBColorSpace() { |
| return getColorSpace() == DEVICE_RGB; |
| } |
| |
| /** {@inheritDoc} */ |
| public boolean isCMYKColorSpace() { |
| return getColorSpace() == DEVICE_CMYK; |
| } |
| |
| /** {@inheritDoc} */ |
| public boolean isGrayColorSpace() { |
| return getColorSpace() == DEVICE_GRAY; |
| } |
| |
| } |