Hi Peter, I like this patch, but I'd add a check for absolute devices. It's neither currently possible nor feasible with relative devices.
In any case, it's Reviewed-by: Simon Thum <[email protected]> On 07/06/2011 12:54 AM, Peter Hutterer wrote: > xinput map-to-crtc "device name" "VGA0" will map to the CRTC "VGA0" by > manipulating the transformation matrix accordingly. And because the NVIDIA > binary driver still exists, Xinerama is supported to. Maybe in another few > years, they'll catch up. > > Signed-off-by: Peter Hutterer <[email protected]> > --- > configure.ac | 2 +- > man/xinput.man | 10 ++- > src/Makefile.am | 2 +- > src/transform.c | 263 > +++++++++++++++++++++++++++++++++++++++++++++++++++++++ > src/xinput.c | 4 + > src/xinput.h | 1 + > 6 files changed, 279 insertions(+), 3 deletions(-) > create mode 100644 src/transform.c > > diff --git a/configure.ac b/configure.ac > index 9e18376..37f998f 100644 > --- a/configure.ac > +++ b/configure.ac > @@ -38,7 +38,7 @@ XORG_MACROS_VERSION(1.8) > XORG_DEFAULT_OPTIONS > > # Obtain compiler/linker options for dependencies > -PKG_CHECK_MODULES(XINPUT, x11 xext [xi >= 1.2] [inputproto >= 1.5]) > +PKG_CHECK_MODULES(XINPUT, x11 xext [xi >= 1.2] [inputproto >= 1.5] xrandr > xinerama) > > # XI2 support > PKG_CHECK_MODULES(XI2, [xi >= 1.2.99.2] [inputproto >= 1.9.99.15], > diff --git a/man/xinput.man b/man/xinput.man > index 8a348d1..56cc654 100644 > --- a/man/xinput.man > +++ b/man/xinput.man > @@ -139,6 +139,14 @@ Remove \fIslave\fP from its current master device. > Set the ClientPointer for the client owning \fIwindow\fP to \fImaster\fP. > \fImaster\fP must specify a master pointer. > .PP > +.TP 8 > +.B --map-to-crtc \fIdevice\fP \fIcrtc\fP > +Restricts the movements of the absolute \fIdevice\fP to the RandR > +\fIcrtc\fP. The CRTC name must match a currently connected CRTC (see > +\fIxrandr(__appmansuffix__)\fP). If the NVIDIA binary driver is > +detected or RandR 1.2 or later is not available, a Xinerama output may be > +specified as "HEAD-N", with N being the Xinerama screen number. > +.PP > \fIdevice\fP can be the device name as a string or the XID of the > device. > .PP > @@ -151,7 +159,7 @@ device. > \fIproperty\fP can be the property as a string or the Atom value. > .PP > .SH "SEE ALSO" > -X(__miscmansuffix__), xset(__appmansuffix__) > +X(__miscmansuffix__), xset(__appmansuffix__), xrandr(__appmansuffix__) > .SH COPYRIGHT > Copyright 1996,1997, Frederic Lepied. > .PP > diff --git a/src/Makefile.am b/src/Makefile.am > index c33fae3..985207b 100644 > --- a/src/Makefile.am > +++ b/src/Makefile.am > @@ -27,7 +27,7 @@ xinput_LDADD = $(XINPUT_LIBS) > > > if HAVE_XI2 > -xinput2_files = hierarchy.c setcp.c test_xi2.c > +xinput2_files = hierarchy.c setcp.c test_xi2.c transform.c > endif > > xinput_SOURCES = \ > diff --git a/src/transform.c b/src/transform.c > new file mode 100644 > index 0000000..c1a065f > --- /dev/null > +++ b/src/transform.c > @@ -0,0 +1,263 @@ > +/* > + * Copyright © 2011 Red Hat, Inc. > + * > + * Permission is hereby granted, free of charge, to any person obtaining a > + * copy of this software and associated documentation files (the "Software"), > + * to deal in the Software without restriction, including without limitation > + * the rights to use, copy, modify, merge, publish, distribute, sublicense, > + * and/or sell copies of the Software, and to permit persons to whom the > + * Software is furnished to do so, subject to the following conditions: > + * > + * The above copyright notice and this permission notice (including the next > + * paragraph) 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 AUTHORS OR COPYRIGHT HOLDERS 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. > + * > + */ > + > + > +#include "xinput.h" > +#include <string.h> > +#include <X11/extensions/Xrandr.h> > +#include <X11/extensions/Xinerama.h> > + > + > +typedef struct Matrix { > + float m[9]; > +} Matrix; > + > +static void matrix_set(Matrix *m, int row, int col, float val) > +{ > + m->m[row * 3 + col] = val; > +} > + > +static void matrix_set_unity(Matrix *m) > +{ > + memset(m, 0, sizeof(m->m)); > + matrix_set(m, 0, 0, 1); > + matrix_set(m, 1, 1, 1); > + matrix_set(m, 2, 2, 1); > +} > + > +#if DEBUG > +static void matrix_print(const Matrix *m) > +{ > + printf("[ %3.3f %3.3f %3.3f ]\n", m->m[0], m->m[1], m->m[2]); > + printf("[ %3.3f %3.3f %3.3f ]\n", m->m[3], m->m[4], m->m[5]); > + printf("[ %3.3f %3.3f %3.3f ]\n", m->m[6], m->m[7], m->m[8]); > +} > +#endif > + > +static int > +apply_matrix(Display *dpy, int deviceid, Matrix *m) > +{ > + Atom prop_float, prop_matrix; > + > + union { > + unsigned char *c; > + float *f; > + } data; > + int format_return; > + Atom type_return; > + unsigned long nitems; > + unsigned long bytes_after; > + > + int rc; > + > + prop_float = XInternAtom(dpy, "FLOAT", False); > + prop_matrix = XInternAtom(dpy, "Coordinate Transformation Matrix", > False); > + > + if (!prop_float) > + { > + fprintf(stderr, "Float atom not found. This server is too old.\n"); > + return EXIT_FAILURE; > + } > + if (!prop_matrix) > + { > + fprintf(stderr, "Coordinate transformation matrix not found. This " > + "server is too old\n"); > + return EXIT_FAILURE; > + } > + > + rc = XIGetProperty(dpy, deviceid, prop_matrix, 0, 9, False, prop_float, > + &type_return, &format_return, &nitems, &bytes_after, > + &data.c); > + if (rc != Success || prop_float != type_return || format_return != 32 || > + nitems != 9 || bytes_after != 0) > + { > + fprintf(stderr, "Failed to retrieve current property values\n"); > + return EXIT_FAILURE; > + } > + > + memcpy(data.f, m->m, sizeof(m->m)); > + > + XIChangeProperty(dpy, deviceid, prop_matrix, prop_float, > + format_return, PropModeReplace, data.c, nitems); > + > + XFree(data.c); > + > + return EXIT_SUCCESS; > +} > + > +static void > +set_transformation_matrix(Display *dpy, Matrix *m, int offset_x, int > offset_y, > + int screen_width, int screen_height) > +{ > + /* offset */ > + int width = DisplayWidth(dpy, DefaultScreen(dpy)); > + int height = DisplayHeight(dpy, DefaultScreen(dpy)); > + > + /* offset */ > + float x = 1.0 * offset_x/width; > + float y = 1.0 * offset_y/height; > + > + /* mapping */ > + float w = 1.0 * screen_width/width; > + float h = 1.0 * screen_height/height; > + > + matrix_set_unity(m); > + > + matrix_set(m, 0, 2, x); > + matrix_set(m, 1, 2, y); > + > + matrix_set(m, 0, 0, w); > + matrix_set(m, 1, 1, h); > + > +#if DEBUG > + matrix_print(m); > +#endif > +} > + > +static int > +map_crtc_xrandr(Display *dpy, int deviceid, const char *output_name) > +{ > + int i, found = 0; > + int rc = EXIT_FAILURE; > + XRRScreenResources *res; > + XRROutputInfo *output_info; > + XRRCrtcInfo *crtc_info; > + > + res = XRRGetScreenResources(dpy, DefaultRootWindow(dpy)); > + > + for (i = 0; i < res->noutput && !found; i++) > + { > + output_info = XRRGetOutputInfo(dpy, res, res->outputs[i]); > + if (!output_info->crtc || output_info->connection != RR_Connected) > + continue; > + > + crtc_info = XRRGetCrtcInfo (dpy, res, output_info->crtc); > + if (strcmp(output_info->name, output_name) == 0) > + { > + found = 1; > + break; > + } > + } > + > + /* crtc holds our screen info, need to compare to actual screen size */ > + if (found) > + { > + Matrix m; > + matrix_set_unity(&m); > + set_transformation_matrix(dpy, &m, crtc_info->x, crtc_info->y, > + crtc_info->width, crtc_info->height); > + rc = apply_matrix(dpy, deviceid, &m); > + } else > + printf("Unable to find output '%s'. " > + "Output may not be connected.\n", output_name); > + > + XRRFreeScreenResources(res); > + > + return rc; > +} > + > +static int > +map_crtc_xinerama(Display *dpy, int deviceid, const char *output_name) > +{ > + const char *prefix = "HEAD-"; > + XineramaScreenInfo *screens = NULL; > + int rc = EXIT_FAILURE; > + int event, error; > + int nscreens; > + int head; > + Matrix m; > + > + if (!XineramaQueryExtension(dpy, &event, &error)) > + { > + fprintf(stderr, "Unable to set screen mapping. Xinerama extension > not found\n"); > + goto out; > + } > + > + if (strlen(output_name) < strlen(prefix) + 1 || > + strncmp(output_name, prefix, strlen(prefix)) != 0) > + { > + fprintf(stderr, "Please specify the output name as HEAD-X," > + "where X is the screen number\n"); > + goto out; > + } > + > + head = output_name[strlen(prefix)] - '0'; > + > + screens = XineramaQueryScreens(dpy, &nscreens); > + > + if (nscreens == 0) > + { > + fprintf(stderr, "Xinerama failed to query screens.\n"); > + goto out; > + } else if (nscreens <= head) > + { > + fprintf(stderr, "Found %d screens, but you requested %s.\n", > + nscreens, output_name); > + goto out; > + } > + > + matrix_set_unity(&m); > + set_transformation_matrix(dpy, &m, > + screens[head].x_org, screens[head].y_org, > + screens[head].width, screens[head].height); > + rc = apply_matrix(dpy, deviceid, &m); > + > +out: > + XFree(screens); > + return rc; > +} > + > +int > +map_to_crtc(Display *dpy, int argc, char *argv[], char *name, char *desc) > +{ > + int opcode, event, error; > + int maj, min; > + char *crtc_name; > + XIDeviceInfo *info; > + > + if (argc < 2) > + { > + fprintf(stderr, "Usage: xinput %s %s\n", name, desc); > + return EXIT_FAILURE; > + } > + > + info = xi2_find_device_info(dpy, argv[0]); > + if (!info) > + { > + fprintf(stderr, "unable to find device %s\n", argv[0]); > + return EXIT_FAILURE; > + } > + > + crtc_name = argv[1]; > + > + /* Check for RandR 1.2. Server bug causes the NVIDIA driver to > + * report with RandR 1.3 support but it doesn't expose RandR CRTCs. > + * Force Xinerama if NV-CONTROL is present */ > + if (XQueryExtension(dpy, "NV-CONTROL", &opcode, &event, &error) || > + !XQueryExtension(dpy, "RANDR", &opcode, &event, &error) || > + !XRRQueryVersion(dpy, &maj, &min) || (maj * 1000 + min) < 1002) > + return map_crtc_xinerama(dpy, info->deviceid, crtc_name); > + else > + return map_crtc_xrandr(dpy, info->deviceid, crtc_name); > +} > diff --git a/src/xinput.c b/src/xinput.c > index 64b4887..432cffc 100644 > --- a/src/xinput.c > +++ b/src/xinput.c > @@ -104,6 +104,10 @@ static entry drivers[] = > "<device>", > test_xi2, > }, > + { "map-to-crtc", > + "<device> <crtc name>", > + map_to_crtc, > + }, > #endif > { "list-props", > "<device> [<device> ...]", > diff --git a/src/xinput.h b/src/xinput.h > index d44ce09..94b8f3c 100644 > --- a/src/xinput.h > +++ b/src/xinput.h > @@ -77,5 +77,6 @@ int change_attachment( Display* display, int argc, char > *argv[], char *prog_name > int float_device( Display* display, int argc, char *argv[], char *prog_name, > char *prog_desc); > int set_clientpointer( Display* display, int argc, char *argv[], char > *prog_name, char *prog_desc); > int test_xi2( Display* display, int argc, char *argv[], char *prog_name, > char *prog_desc); > +int map_to_crtc( Display* display, int argc, char *argv[], char *prog_name, > char *prog_desc); > > /* end of xinput.h */ _______________________________________________ [email protected]: X.Org development Archives: http://lists.x.org/archives/xorg-devel Info: http://lists.x.org/mailman/listinfo/xorg-devel
