src/video/x11/SDL_x11modes.c
author Sam Lantinga <slouken@libsdl.org>
Thu, 27 Jul 2006 06:53:23 +0000
changeset 1951 7177581dc9fa
parent 1950 a344e42bce3b
child 2859 99210400e8b9
permissions -rw-r--r--
Initial work on X11 window code in.
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/*
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    SDL - Simple DirectMedia Layer
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    Copyright (C) 1997-2006 Sam Lantinga
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    This library is free software; you can redistribute it and/or
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    modify it under the terms of the GNU Lesser General Public
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    License as published by the Free Software Foundation; either
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    version 2.1 of the License, or (at your option) any later version.
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    This library is distributed in the hope that it will be useful,
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    but WITHOUT ANY WARRANTY; without even the implied warranty of
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    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
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    Lesser General Public License for more details.
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    You should have received a copy of the GNU Lesser General Public
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    License along with this library; if not, write to the Free Software
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    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
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    Sam Lantinga
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    slouken@libsdl.org
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*/
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#include "SDL_config.h"
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#include "SDL_x11video.h"
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static int
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get_visualinfo(Display * display, int screen, XVisualInfo * vinfo)
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{
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    const char *visual_id = SDL_getenv("SDL_VIDEO_X11_VISUALID");
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    int use_directcolor = 1;
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    int depth;
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    /* Look for an exact visual, if requested */
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    if (visual_id) {
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        XVisualInfo *vi, template;
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        int nvis;
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        SDL_zero(template);
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        template.visualid = SDL_strtol(visual_id, NULL, 0);
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        vi = XGetVisualInfo(display, VisualIDMask, &template, &nvis);
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        if (vi) {
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            *vinfo = *vi;
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            XFree(vi);
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            return 0;
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        }
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    }
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    depth = DefaultDepth(display, screen);
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    if ((use_directcolor &&
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         XMatchVisualInfo(display, screen, depth, DirectColor, vinfo)) ||
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        XMatchVisualInfo(display, screen, depth, TrueColor, vinfo) ||
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        XMatchVisualInfo(display, screen, depth, PseudoColor, vinfo) ||
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        XMatchVisualInfo(display, screen, depth, StaticColor, vinfo)) {
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        return 0;
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    }
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    return -1;
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}
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void
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X11_InitModes(_THIS)
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{
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    SDL_VideoData *data = (SDL_VideoData *) _this->driverdata;
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    int screen;
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    int n;
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    XPixmapFormatValues *p;
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    p = XListPixmapFormats(data->display, &n);
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    for (screen = 0; screen < ScreenCount(data->display); ++screen) {
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        XVisualInfo vinfo;
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        int i, bpp;
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        Uint32 Rmask, Gmask, Bmask, Amask;
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        SDL_VideoDisplay display;
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        SDL_DisplayData *displaydata;
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        SDL_DisplayMode mode;
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        if (get_visualinfo(data->display, screen, &vinfo) < 0) {
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            continue;
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        }
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        bpp = vinfo.depth;
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        for (i = 0; i < n; ++i) {
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            if (p[i].depth == vinfo.depth) {
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                bpp = p[i].bits_per_pixel;
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                break;
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            }
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        }
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        Rmask = vinfo.visual->red_mask;
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        Gmask = vinfo.visual->green_mask;
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        Bmask = vinfo.visual->blue_mask;
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        if (vinfo.depth == 32) {
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            Amask = (0xFFFFFFFF & ~(Rmask | Gmask | Bmask));
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        } else {
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            Amask = 0;
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        }
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        mode.format =
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            SDL_MasksToPixelFormatEnum(bpp, Rmask, Gmask, Bmask, Amask);
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        mode.w = DisplayWidth(data->display, screen);
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        mode.h = DisplayHeight(data->display, screen);
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        mode.refresh_rate = 0;
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        mode.driverdata = NULL;
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        displaydata = (SDL_DisplayData *) SDL_malloc(sizeof(*displaydata));
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        if (!displaydata) {
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            continue;
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        }
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        displaydata->screen = screen;
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        displaydata->visual = vinfo.visual;
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        displaydata->depth = vinfo.depth;
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        SDL_zero(display);
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        display.desktop_mode = mode;
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        display.current_mode = mode;
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        display.driverdata = displaydata;
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        SDL_AddVideoDisplay(&display);
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    }
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    XFree(p);
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}
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void
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X11_GetDisplayModes(_THIS)
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{
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    SDL_DisplayData *data = (SDL_DisplayData *) SDL_CurrentDisplay.driverdata;
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    SDL_DisplayMode mode;
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    //SDL_AddDisplayMode(_this->current_display, &mode);
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}
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int
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X11_SetDisplayMode(_THIS, SDL_DisplayMode * mode)
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{
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    //SDL_DisplayModeData *data = (SDL_DisplayModeData *) mode->driverdata;
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    return -1;
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}
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void
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X11_QuitModes(_THIS)
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{
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}
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a344e42bce3b Started work on the new X11 driver.
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