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Diffstat (limited to 'krdc/vidmode.cpp')
| -rw-r--r-- | krdc/vidmode.cpp | 159 |
1 files changed, 159 insertions, 0 deletions
diff --git a/krdc/vidmode.cpp b/krdc/vidmode.cpp new file mode 100644 index 00000000..4c7762fb --- /dev/null +++ b/krdc/vidmode.cpp @@ -0,0 +1,159 @@ +/*************************************************************************** + vidmode.cpp - video mode switching + ------------------- + begin : Tue June 3 03:08:00 CET 2002 + copyright : (C) 2002 by Tim Jansen + email : tim@tjansen.de + ***************************************************************************/ + +/*************************************************************************** + * * + * This program is free software; you can redistribute it and/or modify * + * it under the terms of the GNU General Public License as published by * + * the Free Software Foundation; either version 2 of the License, or * + * (at your option) any later version. * + * * + ***************************************************************************/ + +#include <config.h> +#include <X11/Xlib.h> + +#ifdef HAVE_VIDMODE_EXTENSION +#include <X11/extensions/xf86vmode.h> +#endif + +#include "vidmode.h" + +#ifdef HAVE_VIDMODE_EXTENSION + +void vidmodeNormalSwitch(Display *dpy, Resolution oldResolution) +{ + if (!oldResolution.valid) + return; + + XF86VidModeModeInfo **modes; + int modecount; + int eventB, errorB; + + if (!XF86VidModeQueryExtension(dpy, &eventB, &errorB)) + return; + + if (!XF86VidModeGetAllModeLines(dpy, oldResolution.screen, &modecount, &modes)) + return; + + for (int i = 0; i < modecount; i++) { + int w = (*modes[i]).hdisplay; + int h = (*modes[i]).vdisplay; + + if ((oldResolution.width == w) && + (oldResolution.height == h)) { + XF86VidModeSwitchToMode(dpy,oldResolution.screen,modes[i]); + XFlush(dpy); + XF86VidModeSetViewPort(dpy,DefaultScreen(dpy),0,0); + XFlush(dpy); + return; + } + } +} + +Resolution vidmodeFullscreenSwitch(Display *dpy, int screen, + int sw, int sh, int &nx, int &ny) +{ + XF86VidModeModeInfo **modes; + int modecount; + int bestmode = -1; + int bestw, besth; + int eventB, errorB; + + if (screen < 0) + return Resolution(); + + if (!XF86VidModeQueryExtension(dpy, &eventB, &errorB)) + return Resolution(); + + if (!XF86VidModeGetAllModeLines(dpy,screen,&modecount, &modes)) + return Resolution(); + + int cw = (*modes[0]).hdisplay; + int ch = (*modes[0]).vdisplay; + nx = cw; + ny = ch; + if ((cw == sw) && (ch == sh)) + return Resolution(); + bool foundLargeEnoughRes = (cw>=sw) && (ch>=sh); + bestw = cw; + besth = ch; + + for (int i = 1; i < modecount; i++) { + int w = (*modes[i]).hdisplay; + int h = (*modes[i]).vdisplay; + + if ((w == cw) && (h == ch)) + continue; + + /* If resolution matches framebuffer, take it */ + if ((w == sw) && (h == sh)) { + bestw = w; + besth = h; + bestmode = i; + break; + } + /* if resolution larger than framebuffer... */ + if ((w>=sw) && (h>=sh)) { + /* and no other previously found resoltion was smaller or + this is smaller than the best resolution so far, take it*/ + if ((!foundLargeEnoughRes) || + (w*h < bestw*besth)) { + bestw = w; + besth = h; + bestmode = i; + foundLargeEnoughRes = true; + } + } + /* If all resolutions so far were smaller than framebuffer... */ + else if (!foundLargeEnoughRes) { + /* take this one it it is bigger then they were */ + if (w*h > bestw*besth) { + bestw = w; + besth = h; + bestmode = i; + } + } + } + + if (bestmode == -1) + return Resolution(); + + nx = bestw; + ny = besth; + XF86VidModeSwitchToMode(dpy,screen,modes[bestmode]); + XF86VidModeSetViewPort(dpy,screen,0,0); + XFlush(dpy); + + return Resolution(cw, ch, screen); +} + +#else + +void vidmodeNormalSwitch(Display *dpy, Resolution oldResolution) +{ +} + +Resolution vidmodeFullscreenSwitch(Display *dpy, int screen, int sw, int sh, int &nx, int &ny) +{ + return Resolution(); +} + +#endif + +void grabInput(Display *dpy, unsigned int winId) { + XGrabPointer(dpy, winId, True, 0, + GrabModeAsync, GrabModeAsync, + winId, None, CurrentTime); + XFlush(dpy); +} + +void ungrabInput(Display *dpy) { + XUngrabPointer(dpy, CurrentTime); +} + |