Mercurial > osx-quasimode

annotate QuasimodalEventTap.m @ 19:8053681846ad

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Refactored event tap C code into an Objective-C class.
author Atul Varma <avarma@mozilla.com>
date Sun, 11 Apr 2010 23:53:49 -0700
parents 78807eea31b7
children 58522f82a39e
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78807eea31b7 Added EnsoKeyNotifier.m from Enso source, renamed to QuasimodalEventTap.m w/ some notification center stuff removed and formatting fixed to match this codebase.
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1 #include <AppKit/NSWorkspace.h>
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2 #import <Foundation/NSAutoreleasePool.h>
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3 #import <Foundation/NSString.h>
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4 #import <Foundation/NSDictionary.h>
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5
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6 #import "QuasimodalEventTap.h"
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8 #define QUASIMODE_KEY kCGEventFlagMaskAlternate
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9 #define MAX_STR_LEN 10
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11 #ifdef DEBUG
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12 #define DEBUG_MSG(msg) printf(msg);
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13 #else
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14 #define DEBUG_MSG(msg)
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15 #endif
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17 static CGEventRef eventTapCallback(CGEventTapProxy proxy,
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18 CGEventType type,
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19 CGEventRef event,
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20 void *refcon);
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22 @implementation QuasimodalEventTap
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23 - (void)sendSomeKeyEvent {
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24 // TODO: Send some-key event
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25 }
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27 - (CGEventRef)processEventWithProxy: (CGEventTapProxy)proxy
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28 type: (CGEventType)type
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29 event: (CGEventRef)event {
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30 BOOL passOnEvent = !inQuasimode;
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32 if (type == kCGEventFlagsChanged) {
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33 CGEventFlags flags = CGEventGetFlags(event);
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35 if (inQuasimode) {
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36 if (!(flags & QUASIMODE_KEY)) {
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37 // TODO: Send quasimodeend event
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38 inQuasimode = NO;
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39 if (numQuasimodalKeyDowns == 1) {
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40 CGEventRef event[2];
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42 DEBUG_MSG("Re-posting single keypress\n");
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44 event[0] = CGEventCreateKeyboardEvent(
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45 NULL,
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46 (CGKeyCode) lastQuasimodalKeyCode,
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47 true
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48 );
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50 event[1] = CGEventCreateKeyboardEvent(
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51 NULL,
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52 (CGKeyCode) lastQuasimodalKeyCode,
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53 false
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54 );
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56 CGEventSetFlags(event[0], lastQuasimodalKeyFlags);
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57 CGEventSetFlags(event[1], lastQuasimodalKeyFlags);
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59 CGEventTapPostEvent(proxy, event[0]);
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60 CGEventTapPostEvent(proxy, event[1]);
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62 CFRelease(event[0]);
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63 CFRelease(event[1]);
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64 }
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65 DEBUG_MSG("Exit quasimode\n");
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66 }
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67 } else {
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68 if (flags & QUASIMODE_KEY) {
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69 // TODO: Send quasimodestart event
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70 inQuasimode = YES;
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71 passOnEvent = NO;
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72 numQuasimodalKeyDowns = 0;
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73 DEBUG_MSG("Enter quasimode\n");
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74 } else {
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75 [self sendSomeKeyEvent];
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76 }
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77 }
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78 } else {
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79 /* Key up/down event */
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81 if (inQuasimode) {
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82 UniChar strbuf[MAX_STR_LEN];
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83 UniCharCount charsCopied;
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85 CGEventKeyboardGetUnicodeString(
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86 event,
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87 MAX_STR_LEN,
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88 &charsCopied,
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89 strbuf
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90 );
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91
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92 NSString *chars = [NSString stringWithCharacters: strbuf
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93 length: charsCopied];
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94 NSString *eventType;
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95
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96 int64_t keycode = CGEventGetIntegerValueField(
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97 event,
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98 kCGKeyboardEventKeycode
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99 );
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100
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101 if (type == kCGEventKeyDown) {
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102 numQuasimodalKeyDowns += 1;
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103 lastQuasimodalKeyCode = keycode;
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104 lastQuasimodalKeyFlags = CGEventGetFlags(event);
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105 eventType = @"keyDown";
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106 } else
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107 eventType = @"keyUp";
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108
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109 NSNumber *keycodeNum = [NSNumber numberWithUnsignedInt: keycode];
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110
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111 // TODO: Send event
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112 } else {
19
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113 [self sendSomeKeyEvent];
18
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114 }
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115 }
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116
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117 if (passOnEvent)
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118 return event;
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119 else
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120 return NULL;
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121 }
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122
19
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123 - (id)init {
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124 if (self = [super init]) {
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125 numQuasimodalKeyDowns = 0;
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126 inQuasimode = NO;
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127
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128 CGEventMask mask = (CGEventMaskBit(kCGEventKeyDown) |
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129 CGEventMaskBit(kCGEventKeyUp) |
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130 CGEventMaskBit(kCGEventFlagsChanged));
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131
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132 portRef = CGEventTapCreate(kCGHIDEventTap,
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133 kCGHeadInsertEventTap,
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134 0,
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135 mask,
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136 eventTapCallback,
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137 self);
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138
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139 if (portRef == NULL)
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140 printf( "CGEventTapCreate() failed.\n" );
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141
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142 rlSrcRef = CFMachPortCreateRunLoopSource(kCFAllocatorDefault,
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143 portRef,
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144 0);
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145
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146 CFRunLoopAddSource(CFRunLoopGetCurrent(),
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147 rlSrcRef,
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148 kCFRunLoopDefaultMode);
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149 }
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150 return self;
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151 }
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152
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153 - (void)finalize {
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154 CFRunLoopRemoveSource(CFRunLoopGetCurrent(),
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155 rlSrcRef,
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156 kCFRunLoopDefaultMode);
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157
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158 CFRelease(rlSrcRef);
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159 CFRelease(portRef);
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160 }
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161 @end
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162
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163 static CGEventRef eventTapCallback(CGEventTapProxy proxy,
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164 CGEventType type,
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165 CGEventRef event,
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166 void *refcon)
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167
18
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168 {
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169 NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
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170 CGEventRef retval;
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171 NSString *bundleId = [
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172 [[NSWorkspace sharedWorkspace] activeApplication]
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173 objectForKey: @"NSApplicationBundleIdentifier"
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174 ];
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175
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176 if (bundleId &&
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177 [bundleId isEqualToString: @"com.blizzard.worldofwarcraft"]) {
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178 retval = event;
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179 } else {
19
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180 QuasimodalEventTap *tap = (QuasimodalEventTap *) refcon;
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181 retval = [tap processEventWithProxy: proxy
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182 type: type
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183 event: event];
18
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184 }
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185
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186 [pool release];
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187
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188 return retval;
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189 }