Mercurial > sdl-ios-xcode

annotate src/video/Xext/XmuStdCmap/AllCmap.c @ 3473:7bdc10624cba

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This is terrible, but the OpenGL standard says that lines are half open, which means that one endpoint is not covered so adjoining lines don't overlap. It also doesn't define which end is open, and indeed Mac OS X and Linux differ. Mac OS X seems to leave the second endpoint open, but Linux uses the right-most endpoint for x major lines and the bottom-most endpoint for y major lines.
author Sam Lantinga <slouken@libsdl.org>
date Sat, 21 Nov 2009 07:14:21 +0000
parents 2032348afed1
children
rev   line source
2185
2032348afed1 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
Bob Pendleton <bob@pendleton.com>
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1 /* $Xorg: AllCmap.c,v 1.4 2001/02/09 02:03:51 xorgcvs Exp $ */
2032348afed1 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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2
2032348afed1 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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3 /*
2032348afed1 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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4
2032348afed1 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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5 Copyright 1989, 1998 The Open Group
2032348afed1 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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6
2032348afed1 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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7 Permission to use, copy, modify, distribute, and sell this software and its
2032348afed1 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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8 documentation for any purpose is hereby granted without fee, provided that
2032348afed1 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
Bob Pendleton <bob@pendleton.com>
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9 the above copyright notice appear in all copies and that both that
2032348afed1 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
Bob Pendleton <bob@pendleton.com>
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10 copyright notice and this permission notice appear in supporting
2032348afed1 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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11 documentation.
2032348afed1 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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12
2032348afed1 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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13 The above copyright notice and this permission notice shall be included in
2032348afed1 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
Bob Pendleton <bob@pendleton.com>
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14 all copies or substantial portions of the Software.
2032348afed1 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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15
2032348afed1 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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16 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
2032348afed1 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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17 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
2032348afed1 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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18 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
2032348afed1 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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19 OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
2032348afed1 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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20 AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
2032348afed1 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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21 CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
2032348afed1 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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22
2032348afed1 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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23 Except as contained in this notice, the name of The Open Group shall not be
2032348afed1 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
Bob Pendleton <bob@pendleton.com>
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24 used in advertising or otherwise to promote the sale, use or other dealings
2032348afed1 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
Bob Pendleton <bob@pendleton.com>
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25 in this Software without prior written authorization from The Open Group.
2032348afed1 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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26
2032348afed1 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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27 */
2032348afed1 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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28 /* $XFree86: xc/lib/Xmu/AllCmap.c,v 1.7 2001/01/17 19:42:53 dawes Exp $ */
2032348afed1 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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29
2032348afed1 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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30 #ifdef HAVE_CONFIG_H
2032348afed1 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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31 #include <config.h>
2032348afed1 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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32 #endif
2032348afed1 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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33 #include <stdio.h>
2032348afed1 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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34 #include <X11/Xlib.h>
2032348afed1 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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35 #include <X11/Xatom.h>
2032348afed1 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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36 #include <X11/Xutil.h>
2032348afed1 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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37 #include "../extensions/StdCmap.h"
2032348afed1 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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38
2032348afed1 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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39 static XVisualInfo *getDeepestVisual(int, XVisualInfo *, int);
2032348afed1 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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40
2032348afed1 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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41 /*
2032348afed1 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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42 * To create all of the appropriate standard colormaps for every visual of
2032348afed1 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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43 * every screen on a given display, use XmuAllStandardColormaps.
2032348afed1 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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44 *
2032348afed1 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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45 * Define and retain as permanent resources all standard colormaps which are
2032348afed1 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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46 * meaningful for the visuals of each screen of the display. Return 0 on
2032348afed1 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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47 * failure, non-zero on success. If the property of any standard colormap
2032348afed1 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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48 * is already defined, redefine it.
2032348afed1 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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49 *
2032348afed1 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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50 * This interface is intended to be used by window managers or a client
2032348afed1 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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51 * upon start-up of a session.
2032348afed1 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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52 *
2032348afed1 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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53 * The standard colormaps of a screen are defined by properties associated
2032348afed1 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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54 * with the screen's root window. Each screen has exactly one root window.
2032348afed1 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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55 * The property names of standard colormaps are predefined, and each property
2032348afed1 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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56 * name may describe at most one colormap.
2032348afed1 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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57 *
2032348afed1 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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58 * The standard colormaps are
2032348afed1 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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59 * RGB_BEST_MAP
2032348afed1 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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60 * RGB_RED_MAP
2032348afed1 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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61 * RGB_GREEN_MAP
2032348afed1 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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62 * RGB_BLUE_MAP
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63 * RGB_DEFAULT_MAP
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64 * RGB_GRAY_MAP
2032348afed1 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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65 *
2032348afed1 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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66 * Therefore a screen may have at most 6 standard colormap properties defined.
2032348afed1 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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67 *
2032348afed1 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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68 * A standard colormap is associated with a particular visual of the screen.
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69 * A screen may have multiple visuals defined, including visuals of the same
2032348afed1 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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70 * class at different depths. Note that a visual id might be repeated for
2032348afed1 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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71 * more than one depth, so the visual id and the depth of a visual identify
2032348afed1 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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72 * the visual. The characteristics of the visual will determine which
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73 * standard colormaps are meaningful under that visual, and will determine
2032348afed1 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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74 * how the standard colormap is defined. Because a standard colormap is
2032348afed1 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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75 * associated with a specific visual, there must be a method of determining
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76 * which visuals take precedence in defining standard colormaps.
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77 *
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78 * The method used here is: for the visual of greatest depth, define all
2032348afed1 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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79 * standard colormaps meaningful to that visual class, according to this
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80 * order of (descending) precedence:
2032348afed1 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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81 * 1. DirectColor
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82 * 2. PseudoColor
2032348afed1 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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83 * 3. TrueColor and GrayScale
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84 * 4. StaticColor and StaticGray
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85 *
2032348afed1 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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86 * Allows partial success by screenful. For example, if a map on screen 1
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87 * fails, the maps on screen 0, created earlier, will remain. However,
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88 * none on screen 1 will remain. If a map on 0 fails, none will remain.
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89 *
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90 * See the comments under XmuVisualStandardColormaps() for notes on which
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91 * standard colormaps are meaningful under these classes of visuals.
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92 */
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93
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94 Status
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95 XmuAllStandardColormaps(Display * dpy)
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96 {
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97 int nvisuals, scr;
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98 Status status;
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99 long vinfo_mask;
2032348afed1 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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100 XVisualInfo template, *vinfo, *v1, *v2;
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101
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102 status = 0;
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103 /* for each screen, determine all visuals of this server */
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104 for (scr = 0; scr < ScreenCount(dpy); scr++) {
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105 template.screen = scr;
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106 vinfo_mask = VisualScreenMask;
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107 vinfo = XGetVisualInfo(dpy, vinfo_mask, &template, &nvisuals);
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108 if (vinfo == NULL) /* unexpected: a screen with no visuals */
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109 continue;
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110
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111 v1 = getDeepestVisual(DirectColor, vinfo, nvisuals);
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112 v2 = getDeepestVisual(PseudoColor, vinfo, nvisuals);
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113
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114 if (v2 &&
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115 (!v1 || (v2->colormap_size >=
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116 ((v1->red_mask | v1->green_mask | v1->blue_mask) + 1))))
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117 status = XmuVisualStandardColormaps(dpy, scr, v2->visualid,
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118 (unsigned) v2->depth, 1, 1);
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119 else if (v1)
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120 status = XmuVisualStandardColormaps(dpy, scr, v1->visualid,
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121 (unsigned) v1->depth, 1, 1);
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122
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123 else {
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124 if (((v1 = getDeepestVisual(TrueColor, vinfo, nvisuals)) != NULL)
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125 || ((v1 = getDeepestVisual(StaticColor, vinfo, nvisuals)) !=
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126 NULL))
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127 status = XmuVisualStandardColormaps(dpy, scr, v1->visualid,
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128 (unsigned) v1->depth, 1,
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129 1);
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130 if (status
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131 &&
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132 (((v1 = getDeepestVisual(GrayScale, vinfo, nvisuals)) != NULL)
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133 || ((v1 = getDeepestVisual(StaticGray, vinfo, nvisuals)) !=
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134 NULL)))
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135 status =
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136 XmuVisualStandardColormaps(dpy, scr, v1->visualid,
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137 (unsigned) v1->depth, 1, 1);
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138 }
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139 XFree((char *) vinfo);
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140 if (!status)
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141 break;
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142 }
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143 return status;
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144 }
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145
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146 static XVisualInfo *
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147 getDeepestVisual(int visual_class, XVisualInfo * vinfo, int nvisuals)
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148 {
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149 register int i;
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150 register int maxdepth = 0;
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151 XVisualInfo *v = NULL;
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152
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153 for (i = 0; i < nvisuals; i++, vinfo++)
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154 if (vinfo->class == visual_class && vinfo->depth > maxdepth) {
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155 maxdepth = vinfo->depth;
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156 v = vinfo;
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157 }
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158 return (v);
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159 }