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Diffstat (limited to 'xorg-server/mfb/mfbcmap.c')
| -rw-r--r-- | xorg-server/mfb/mfbcmap.c | 162 |
1 files changed, 162 insertions, 0 deletions
diff --git a/xorg-server/mfb/mfbcmap.c b/xorg-server/mfb/mfbcmap.c new file mode 100644 index 000000000..4dabcae1a --- /dev/null +++ b/xorg-server/mfb/mfbcmap.c @@ -0,0 +1,162 @@ +/*********************************************************** + +Copyright 1987, 1998 The Open Group + +Permission to use, copy, modify, distribute, and sell this software and its +documentation for any purpose is hereby granted without fee, provided that +the above copyright notice appear in all copies and that both that +copyright notice and this permission notice appear in supporting +documentation. + +The above copyright notice and this permission notice shall be included in +all copies or substantial portions of the Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN +AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN +CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + +Except as contained in this notice, the name of The Open Group shall not be +used in advertising or otherwise to promote the sale, use or other dealings +in this Software without prior written authorization from The Open Group. + + +Copyright 1987 by Digital Equipment Corporation, Maynard, Massachusetts. + + All Rights Reserved + +Permission to use, copy, modify, and distribute this software and its +documentation for any purpose and without fee is hereby granted, +provided that the above copyright notice appear in all copies and that +both that copyright notice and this permission notice appear in +supporting documentation, and that the name of Digital not be +used in advertising or publicity pertaining to distribution of the +software without specific, written prior permission. + +DIGITAL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING +ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL +DIGITAL BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR +ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, +WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, +ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS +SOFTWARE. + +******************************************************************/ +#ifdef HAVE_DIX_CONFIG_H +#include <dix-config.h> +#endif + +#include <X11/X.h> +#include "scrnintstr.h" +#include "colormapst.h" +#include "resource.h" +#include "micmap.h" +#include "mfb.h" + +/* A monochrome frame buffer is a static gray colormap with two entries. + * We have a "required list" of length 1. Because we can only support 1 + * colormap, we never have to change it, but we may have to change the + * name we call it. If someone installs a new colormap, we know it must + * look just like the old one (because we've checked in dispatch that it was + * a valid colormap identifier, and all the colormap IDs for this device + * look the same). Nevertheless, we still have to uninstall the old colormap + * and install the new one. Similarly, if someone uninstalls a colormap, + * we have to install the default map, even though we know those two looked + * alike. + * The required list concept is pretty much irrelevant when you can only + * have one map installed at a time. + */ + +int +mfbListInstalledColormaps(pScreen, pmaps) + ScreenPtr pScreen; + Colormap *pmaps; +{ + return miListInstalledColormaps(pScreen, pmaps); +} + + +void +mfbInstallColormap(pmap) + ColormapPtr pmap; +{ + miInstallColormap(pmap); +} + +void +mfbUninstallColormap(pmap) + ColormapPtr pmap; +{ + miUninstallColormap(pmap); +} + +/*ARGSUSED*/ +void +mfbResolveColor (pred, pgreen, pblue, pVisual) + unsigned short *pred; + unsigned short *pgreen; + unsigned short *pblue; + VisualPtr pVisual; +{ + /* + * Gets intensity from RGB. If intensity is >= half, pick white, else + * pick black. This may well be more trouble than it's worth. + */ + *pred = *pgreen = *pblue = + (((30L * *pred + + 59L * *pgreen + + 11L * *pblue) >> 8) >= (((1<<8)-1)*50)) ? ~0 : 0; +} + +Bool +mfbCreateColormap(pMap) + ColormapPtr pMap; +{ + ScreenPtr pScreen; + unsigned short red0, green0, blue0; + unsigned short red1, green1, blue1; + Pixel pix; + + pScreen = pMap->pScreen; + if (pScreen->whitePixel == 0) + { + red0 = green0 = blue0 = ~0; + red1 = green1 = blue1 = 0; + } + else + { + red0 = green0 = blue0 = 0; + red1 = green1 = blue1 = ~0; + } + + /* this is a monochrome colormap, it only has two entries, just fill + * them in by hand. If it were a more complex static map, it would be + * worth writing a for loop or three to initialize it */ + + /* this will be pixel 0 */ + pix = 0; + if (AllocColor(pMap, &red0, &green0, &blue0, &pix, 0) != Success) + return FALSE; + + /* this will be pixel 1 */ + if (AllocColor(pMap, &red1, &green1, &blue1, &pix, 0) != Success) + return FALSE; + return TRUE; +} + +/*ARGSUSED*/ +void +mfbDestroyColormap (pMap) + ColormapPtr pMap; +{ + return; +} + +Bool +mfbCreateDefColormap (pScreen) + ScreenPtr pScreen; +{ + return miCreateDefColormap(pScreen); +} |