WindowBlurSIMBL.m

   1 //
   2 //  WindowBlurSIMBL.m
   3 //  WindowBlur
   4 //
   5 //  Created by Joseph Spiros on 5/12/09.
   6 //  Copyright 2009 __MyCompanyName__. All rights reserved.
   7 //
   8
   9 #import "WindowBlurSIMBL.h"
  10 #import "CGSInternal.h"
  11 #import <objc/objc-class.h>
  12
  13 void MethodSwizzle(Class aClass, SEL orig_sel, SEL alt_sel)
  14 {
  15     Method orig_method = nil, alt_method = nil;
  16
  17     // First, look for the methods
  18     orig_method = class_getInstanceMethod(aClass, orig_sel);
  19     alt_method = class_getInstanceMethod(aClass, alt_sel);
  20
  21     // If both are found, swizzle them
  22     if ((orig_method != nil) && (alt_method != nil))
  23         {
  24         char *temp1;
  25         IMP temp2;
  26
  27         temp1 = orig_method->method_types;
  28         orig_method->method_types = alt_method->method_types;
  29         alt_method->method_types = temp1;
  30
  31         temp2 = orig_method->method_imp;
  32         orig_method->method_imp = alt_method->method_imp;
  33         alt_method->method_imp = temp2;
  34         }
  35 }
  36
  37 static NSMutableDictionary *instanceIDToIvars = nil;
  38 static BOOL needToSwizzleDealloc = YES;
  39
  40 @implementation WindowBlurWindowHack
  41
  42 - (id)PRE__instanceID
  43 {
  44     return [NSValue valueWithPointer:self];
  45 }
  46
  47 - (NSMutableDictionary *)PRE__ivars
  48 {
  49     NSMutableDictionary *ivars;
  50
  51     if (needToSwizzleDealloc)
  52     {
  53         MethodSwizzle([NSWindow class],
  54                       @selector(dealloc),
  55                       @selector(PRE__deallocSwizzler));
  56         needToSwizzleDealloc = NO;
  57     }
  58
  59     if (instanceIDToIvars == nil)
  60     {
  61         instanceIDToIvars = [[NSMutableDictionary alloc] init];
  62     }
  63
  64     ivars = [instanceIDToIvars objectForKey:[self PRE__instanceID]];
  65     if (ivars == nil)
  66     {
  67         ivars = [NSMutableDictionary dictionary];
  68         [instanceIDToIvars setObject:ivars forKey:[self PRE__instanceID]];
  69     }
  70
  71     return ivars;
  72 }
  73
  74 - (void)PRE__deallocSwizzler
  75 {
  76     [instanceIDToIvars removeObjectForKey:[self PRE__instanceID]];
  77     if ([instanceIDToIvars count] == 0)
  78     {
  79         [instanceIDToIvars release];
  80         instanceIDToIvars = nil;
  81     }
  82
  83     [self PRE__deallocSwizzler];
  84 }
  85
  86 - (void)display {
  87         #if MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_4
  88         if (floor(NSAppKitVersionNumber) > 824) {
  89                 NSString *filterName;
  90                 if (!(filterName = [[NSUserDefaults standardUserDefaults] stringForKey:@"WindowBlurSIMBL-FilterName"])) {
  91                         filterName = @"CIGaussianBlur";
  92                 }
  93                 NSDictionary *filterValues;
  94                 if (!(filterValues = [[NSUserDefaults standardUserDefaults] dictionaryForKey:@"WindowBlurSIMBL-FilterValues"])) {
  95                         filterValues = [NSDictionary dictionaryWithObject:[NSNumber numberWithFloat:2.0] forKey:@"inputRadius"];
  96                 }
  97                 NSMutableDictionary *optionsDict = [NSMutableDictionary dictionaryWithDictionary:filterValues];
  98                 if (![optionsDict objectForKey:@"inputCenter"]) {
  99                         [optionsDict setObject:[CIVector vectorWithX:0.0 Y:0.0] forKey:@"inputCenter"];
 100                 }
 101                 CGSConnectionID con = CGSMainConnectionID();
 102                 if (con) {
 103                         NSNumber *filterNumber;
 104                         int filter;
 105                         if (filterNumber = [[self PRE__ivars] objectForKey:@"filter"]) {
 106                                 filter = [filterNumber intValue];
 107                                 CGSRemoveWindowFilter(con, [self windowNumber], filter);
 108                         }
 109                         if (noErr == CGSNewCIFilterByName(con, (CFStringRef)filterName, &filter)) {
 110                                 CGSSetCIFilterValuesFromDictionary(con, filter, (CFDictionaryRef)optionsDict);
 111                                 CGSAddWindowFilter(con, [self windowNumber], filter, kCGWindowFilterUnderlay);
 112                                 [[self PRE__ivars] setObject:[NSNumber numberWithInt:filter] forKey:@"filter"];
 113                         }
 114                 }
 115         }
 116         #endif
 117         [super display];
 118 }
 119
 120 @end
 121
 122 @implementation WindowBlurSIMBL
 123
 124 + (void)load {
 125         [WindowBlurWindowHack poseAsClass:[NSWindow class]];
 126 }
 127
 128 @end