001 /* 002 * 003 004 Licensed under the Apache License, Version 2.0 (the "License"); 005 you may not use this file except in compliance with the License. 006 You may obtain a copy of the License at 007 008 http://www.apache.org/licenses/LICENSE-2.0 009 010 Unless required by applicable law or agreed to in writing, software 011 distributed under the License is distributed on an "AS IS" BASIS, 012 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 013 See the License for the specific language governing permissions and 014 limitations under the License. 015 */ 016 017 package railo.runtime.img.filter;import java.awt.image.BufferedImage; 018 019 import railo.runtime.engine.ThreadLocalPageContext; 020 import railo.runtime.exp.FunctionException; 021 import railo.runtime.exp.PageException; 022 import railo.runtime.img.ImageUtil; 023 import railo.runtime.type.KeyImpl; 024 import railo.runtime.type.List; 025 import railo.runtime.type.Struct; 026 027 028 029 /** 030 * A filter which fills an image with a given color. Normally you would just call Graphics.fillRect but it can sometimes be useful 031 * to go via a filter to fit in with an existing API. 032 */ 033 public class FillFilter extends PointFilter implements DynFiltering { 034 035 private int fillColor; 036 037 /** 038 * Construct a FillFilter. 039 */ 040 public FillFilter() { 041 this(0xff000000); 042 } 043 044 /** 045 * Construct a FillFilter. 046 * @param color the fill color 047 */ 048 public FillFilter(int color) { 049 this.fillColor = color; 050 } 051 052 /** 053 * Set the fill color. 054 * @param fillColor the fill color 055 * @see #getFillColor 056 */ 057 public void setFillColor(int fillColor) { 058 this.fillColor = fillColor; 059 } 060 061 /** 062 * Get the fill color. 063 * @return the fill color 064 * @see #setFillColor 065 */ 066 public int getFillColor() { 067 return fillColor; 068 } 069 070 public int filterRGB(int x, int y, int rgb) { 071 return fillColor; 072 } 073 public BufferedImage filter(BufferedImage src, Struct parameters) throws PageException {BufferedImage dst=ImageUtil.createBufferedImage(src); 074 Object o; 075 if((o=parameters.removeEL(KeyImpl.init("FillColor")))!=null)setFillColor(ImageFilterUtil.toColorRGB(o,"FillColor")); 076 if((o=parameters.removeEL(KeyImpl.init("Dimensions")))!=null){ 077 int[] dim=ImageFilterUtil.toDimensions(o,"Dimensions"); 078 setDimensions(dim[0],dim[1]); 079 } 080 081 // check for arguments not supported 082 if(parameters.size()>0) { 083 throw new FunctionException(ThreadLocalPageContext.get(), "ImageFilter", 3, "parameters", "the parameter"+(parameters.size()>1?"s":"")+" ["+List.arrayToList(parameters.keysAsString(),", ")+"] "+(parameters.size()>1?"are":"is")+" not allowed, only the following parameters are supported [FillColor, Dimensions]"); 084 } 085 086 return filter(src, dst); 087 } 088 } 089