| 1 | /* |
| 2 | * Copyright 2003 Red Hat Inc., Durham, North Carolina. |
| 3 | * |
| 4 | * All Rights Reserved. |
| 5 | * |
| 6 | * Permission is hereby granted, free of charge, to any person obtaining |
| 7 | * a copy of this software and associated documentation files (the |
| 8 | * "Software"), to deal in the Software without restriction, including |
| 9 | * without limitation on the rights to use, copy, modify, merge, |
| 10 | * publish, distribute, sublicense, and/or sell copies of the Software, |
| 11 | * and to permit persons to whom the Software is furnished to do so, |
| 12 | * subject to the following conditions: |
| 13 | * |
| 14 | * The above copyright notice and this permission notice (including the |
| 15 | * next paragraph) shall be included in all copies or substantial |
| 16 | * portions of the Software. |
| 17 | * |
| 18 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
| 19 | * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
| 20 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND |
| 21 | * NON-INFRINGEMENT. IN NO EVENT SHALL RED HAT AND/OR THEIR SUPPLIERS |
| 22 | * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN |
| 23 | * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN |
| 24 | * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
| 25 | * SOFTWARE. |
| 26 | */ |
| 27 | |
| 28 | /* |
| 29 | * Authors: |
| 30 | * Rickard E. (Rik) Faith <faith@redhat.com> |
| 31 | */ |
| 32 | |
| 33 | /** \file |
| 34 | * |
| 35 | * This file implements a mapping from remote XInput event types to Xdmx |
| 36 | * XInput event types. |
| 37 | * |
| 38 | * The exglobals.h file defines global server-side variables with names |
| 39 | * Device* to be integers that hold the value of the type of the |
| 40 | * server-side XInput extension event. |
| 41 | * |
| 42 | * The client-side X11/extensions/XInput.h file defines macros with THE |
| 43 | * EXACT SAME Device* names! |
| 44 | * |
| 45 | * Using those macros to extract remote server event type values from |
| 46 | * the (opaque) XDevice structure is appropriate, but makes a direct |
| 47 | * mapping to the Device* integers impossible. So we use the normalized |
| 48 | * XI_Device* names for these routines. |
| 49 | */ |
| 50 | |
| 51 | #ifdef HAVE_DMX_CONFIG_H |
| 52 | #include <dmx-config.h> |
| 53 | #endif |
| 54 | |
| 55 | #include "dmxinputinit.h" |
| 56 | #include "dmxmap.h" |
| 57 | |
| 58 | /** Create a mapping from \a remoteEvent to \a serverEvent. The \a |
| 59 | * remoteEvent is the type returned from the remote server. The \a |
| 60 | * serverEvent is from the XI_* list of events in |
| 61 | * include/extensions/XIproto.h. */ |
| 62 | void |
| 63 | dmxMapInsert(DMXLocalInputInfoPtr dmxLocal, int remoteEvent, int serverEvent) |
| 64 | { |
| 65 | int hash = remoteEvent & DMX_MAP_MASK; |
| 66 | int i; |
| 67 | |
| 68 | /* Return if this has already been mapped */ |
| 69 | if (dmxLocal->map[hash].remote == remoteEvent |
| 70 | && dmxLocal->map[hash].server == serverEvent) |
| 71 | return; |
| 72 | |
| 73 | if (dmxLocal->map[hash].remote) { |
| 74 | dmxLocal->mapOptimize = 0; |
| 75 | for (i = 0; i < DMX_MAP_ENTRIES; i++) { |
| 76 | if (!dmxLocal->map[i].remote) { |
| 77 | dmxLocal->map[i].remote = remoteEvent; |
| 78 | dmxLocal->map[i].server = serverEvent; |
| 79 | return; |
| 80 | } |
| 81 | } |
| 82 | dmxLog(dmxWarning, |
| 83 | "Out of map entries, cannot map remove event type %d\n", |
| 84 | remoteEvent); |
| 85 | } |
| 86 | else { |
| 87 | dmxLocal->map[hash].remote = remoteEvent; |
| 88 | dmxLocal->map[hash].server = serverEvent; |
| 89 | } |
| 90 | } |
| 91 | |
| 92 | /** Remove all mappings there were inserted with #dmxMapInsert. */ |
| 93 | void |
| 94 | dmxMapClear(DMXLocalInputInfoPtr dmxLocal) |
| 95 | { |
| 96 | int i; |
| 97 | |
| 98 | for (i = 0; i < DMX_MAP_ENTRIES; i++) |
| 99 | dmxLocal->map[i].remote = 0; |
| 100 | dmxLocal->mapOptimize = 1; |
| 101 | } |
| 102 | |
| 103 | /** Lookup a mapping for \a remoteEvent. The \a remoteEvent is the type |
| 104 | * returned from the remote server. The return value is that which was |
| 105 | * passed into #dmxMapInsert (i.e., a value from the XI_* list in |
| 106 | * include/extensions/XIproto.h). If a mapping is not available, -1 is |
| 107 | * returned. */ |
| 108 | int |
| 109 | dmxMapLookup(DMXLocalInputInfoPtr dmxLocal, int remoteEvent) |
| 110 | { |
| 111 | int hash = remoteEvent & DMX_MAP_MASK; |
| 112 | int serverEvent = -1; |
| 113 | int i; |
| 114 | |
| 115 | if (dmxLocal->mapOptimize && dmxLocal->map[hash].remote == remoteEvent) { |
| 116 | serverEvent = dmxLocal->map[hash].server; |
| 117 | } |
| 118 | else { |
| 119 | for (i = 0; i < DMX_MAP_ENTRIES; i++) |
| 120 | if (dmxLocal->map[i].remote == remoteEvent) { |
| 121 | serverEvent = dmxLocal->map[hash].server; |
| 122 | break; |
| 123 | } |
| 124 | } |
| 125 | |
| 126 | return serverEvent; |
| 127 | } |