Mercurial > sdl-ios-xcode
annotate src/video/Xext/XmuStdCmap/Distinct.c @ 2825:620a91b6d263
Date: Tue, 02 Dec 2008 23:38:26 +0100
From: Couriersud
Subject: Re: SDL: Keyboard layout unknown
I have attached a diff which will add an additional keyboard layout to
the x11 driver. The issue arose, when I moved to ubuntu intrepid. I was
only able to map the keys available on my keyboard. The differences to
the existing keyboard was the mapping of HOME,UP,DOWN and some other
keys.
Now only one issue remains. Dead keys (e.g. ^, ` ') on european
keyboards do not generate a "scancode" event. Just a text event when the
key is composed (e.g. ?? ?? ??).
author | Sam Lantinga <slouken@libsdl.org> |
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date | Wed, 03 Dec 2008 04:32:24 +0000 |
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1 /* $Xorg: Distinct.c,v 1.4 2001/02/09 02:03:52 xorgcvs Exp $ */ |
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2 |
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3 /* |
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4 |
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5 Copyright 1990, 1998 The Open Group |
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6 |
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7 Permission to use, copy, modify, distribute, and sell this software and its |
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8 documentation for any purpose is hereby granted without fee, provided that |
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9 the above copyright notice appear in all copies and that both that |
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This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is
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10 copyright notice and this permission notice appear in supporting |
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11 documentation. |
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12 |
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13 The above copyright notice and this permission notice shall be included in |
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14 all copies or substantial portions of the Software. |
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15 |
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16 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
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17 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
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18 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
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19 OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN |
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20 AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN |
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21 CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. |
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22 |
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23 Except as contained in this notice, the name of The Open Group shall not be |
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24 used in advertising or otherwise to promote the sale, use or other dealings |
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25 in this Software without prior written authorization from The Open Group. |
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26 |
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27 */ |
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28 /* $XFree86: xc/lib/Xmu/Distinct.c,v 3.5 2001/07/25 15:04:50 dawes Exp $ */ |
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29 |
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30 /* |
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31 * Author: Keith Packard, MIT X Consortium |
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32 */ |
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33 |
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34 #ifdef HAVE_CONFIG_H |
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35 #include <config.h> |
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36 #endif |
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37 #include <X11/Xlib.h> |
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38 #include <stdlib.h> |
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39 #include <X11/Xutil.h> |
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40 #include "../extensions/StdCmap.h" |
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41 |
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42 /* |
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43 * Distinguishable colors routine. Determines if two colors are |
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44 * distinguishable or not. Somewhat arbitrary meaning. |
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45 */ |
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46 |
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47 #define MIN_DISTINGUISH 10000.0 |
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48 |
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49 Bool |
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50 XmuDistinguishableColors(XColor * colors, int count) |
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51 { |
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52 double deltaRed, deltaGreen, deltaBlue; |
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53 double dist; |
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54 int i, j; |
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55 |
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56 for (i = 0; i < count - 1; i++) |
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57 for (j = i + 1; j < count; j++) { |
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58 deltaRed = (double) colors[i].red - (double) colors[j].red; |
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59 deltaGreen = (double) colors[i].green - (double) colors[j].green; |
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60 deltaBlue = (double) colors[i].blue - (double) colors[j].blue; |
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61 dist = deltaRed * deltaRed + |
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62 deltaGreen * deltaGreen + deltaBlue * deltaBlue; |
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63 if (dist <= MIN_DISTINGUISH * MIN_DISTINGUISH) |
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64 return False; |
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65 } |
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66 return True; |
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67 } |
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68 |
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69 Bool |
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70 XmuDistinguishablePixels(Display * dpy, Colormap cmap, |
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71 unsigned long *pixels, int count) |
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72 { |
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73 XColor *defs; |
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74 int i, j; |
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75 Bool ret; |
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76 |
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77 for (i = 0; i < count - 1; i++) |
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78 for (j = i + 1; j < count; j++) |
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79 if (pixels[i] == pixels[j]) |
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80 return False; |
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81 defs = (XColor *) malloc(count * sizeof(XColor)); |
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82 if (!defs) |
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83 return False; |
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84 for (i = 0; i < count; i++) |
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85 defs[i].pixel = pixels[i]; |
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86 XQueryColors(dpy, cmap, defs, count); |
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87 ret = XmuDistinguishableColors(defs, count); |
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88 free((char *) defs); |
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89 return ret; |
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90 } |