webengine/osswebengine/WebCore/platform/graphics/svg/filters/cg/WKDiscreteTransferFilter.m
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/webengine/osswebengine/WebCore/platform/graphics/svg/filters/cg/WKDiscreteTransferFilter.m Mon Mar 30 12:54:55 2009 +0300
@@ -0,0 +1,73 @@
+/*
+ * Copyright (C) 2006 Oliver Hunt <ojh16@student.canterbury.ac.nz>. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
+ * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#import "config.h"
+#import "WKDiscreteTransferFilter.h"
+
+#if ENABLE(SVG) && ENABLE(SVG_EXPERIMENTAL_FEATURES)
+
+static CIKernel *discreteTransferFilter = nil;
+
+@implementation WKDiscreteTransferFilter
++ (void)initialize
+{
+ [CIFilter registerFilterName:@"WKDiscreteTransfer"
+ constructor:self
+ classAttributes:[NSDictionary dictionaryWithObjectsAndKeys:
+ @"WebKit Discrete Transfer", kCIAttributeFilterDisplayName,
+ [NSArray arrayWithObjects:kCICategoryStylize, kCICategoryVideo,
+ kCICategoryStillImage, kCICategoryNonSquarePixels,nil], kCIAttributeFilterCategories,
+ nil]];
+}
+
++ (CIFilter *)filterWithName:(NSString *)name
+{
+ return [[[self alloc] init] autorelease];
+}
+
+- (id)init
+{
+ if (!discreteTransferFilter) {
+ NSBundle *bundle = [NSBundle bundleForClass:[self class]];
+ NSString *kernelFile = [bundle pathForResource:@"WKDiscreteTransferFilter" ofType:@"cikernel"];
+ NSString *code = [NSString stringWithContentsOfFile:kernelFile encoding:NSUTF8StringEncoding error:0];
+ NSArray *kernels = [CIKernel kernelsWithString:code];
+ discreteTransferFilter = [[kernels objectAtIndex:0] retain];
+ }
+ return [super init];
+}
+
+- (CIImage *)outputImage
+{
+ CISampler *inputSampler = [CISampler samplerWithImage: inputImage];
+ CISampler *tableSampler = [CISampler samplerWithImage: inputTable keysAndValues:kCISamplerFilterMode, kCISamplerFilterNearest, kCISamplerWrapMode, kCISamplerWrapClamp, nil];
+ NSArray *args = [NSArray arrayWithObjects:inputSampler, tableSampler, inputSelector,
+ [NSNumber numberWithDouble:[inputTable extent].size.width - 1.0f], @"definition", [inputSampler definition], nil];
+ return [self apply:discreteTransferFilter arguments:args options:nil];
+}
+
+@end
+
+#endif // ENABLE(SVG) && ENABLE(SVG_EXPERIMENTAL_FEATURES)