#define _GNU_SOURCE
#include <stdio.h>
#include <assert.h>
#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
#include <unistd.h>
#include <stdbool.h>
#include <assert.h>
#include <xcb/xcb.h>
#include <X11/XKBlib.h>
#include <X11/extensions/XKB.h>
#include "xcb_wm.h"
#include "xcb_aux.h"
#include "xcb_event.h"
#include "xcb_property.h"
#include "xcb_keysyms.h"
#include "xcb_icccm.h"
#include "data.h"
#include "queue.h"
#include "table.h"
#include "font.h"
#define TERMINAL "/usr/pkg/bin/urxvt"
Display *xkbdpy;
TAILQ_HEAD(bindings_head, Binding) bindings;
xcb_event_handlers_t evenths;
static const int TOP = 20;
static const int LEFT = 5;
static const int BOTTOM = 5;
static const int RIGHT = 5;
/* This is the filtered environment which will be passed to opened applications.
* It contains DISPLAY (naturally) and locales stuff (LC_*, LANG) */
static char **environment;
/* hm, xcb_wm wants us to implement this. */
table_t *byChild = 0;
table_t *byParent = 0;
xcb_window_t root_win;
char *pattern = "-misc-fixed-medium-r-normal--13-120-75-75-C-70-iso8859-1";
int current_col = 0;
int current_row = 0;
int globalc = 0;
static const char *labelError[] = {
"Success",
"BadRequest",
"BadValue",
"BadWindow",
"BadPixmap",
"BadAtom",
"BadCursor",
"BadFont",
"BadMatch",
"BadDrawable",
"BadAccess",
"BadAlloc",
"BadColor",
"BadGC",
"BadIDChoice",
"BadName",
"BadLength",
"BadImplementation",
};
static const char *labelRequest[] = {
"no request",
"CreateWindow",
"ChangeWindowAttributes",
"GetWindowAttributes",
"DestroyWindow",
"DestroySubwindows",
"ChangeSaveSet",
"ReparentWindow",
"MapWindow",
"MapSubwindows",
"UnmapWindow",
"UnmapSubwindows",
"ConfigureWindow",
"CirculateWindow",
"GetGeometry",
"QueryTree",
"InternAtom",
"GetAtomName",
"ChangeProperty",
"DeleteProperty",
"GetProperty",
"ListProperties",
"SetSelectionOwner",
"GetSelectionOwner",
"ConvertSelection",
"SendEvent",
"GrabPointer",
"UngrabPointer",
"GrabButton",
"UngrabButton",
"ChangeActivePointerGrab",
"GrabKeyboard",
"UngrabKeyboard",
"GrabKey",
"UngrabKey",
"AllowEvents",
"GrabServer",
"UngrabServer",
"QueryPointer",
"GetMotionEvents",
"TranslateCoords",
"WarpPointer",
"SetInputFocus",
"GetInputFocus",
"QueryKeymap",
"OpenFont",
"CloseFont",
"QueryFont",
"QueryTextExtents",
"ListFonts",
"ListFontsWithInfo",
"SetFontPath",
"GetFontPath",
"CreatePixmap",
"FreePixmap",
"CreateGC",
"ChangeGC",
"CopyGC",
"SetDashes",
"SetClipRectangles",
"FreeGC",
"ClearArea",
"CopyArea",
"CopyPlane",
"PolyPoint",
"PolyLine",
"PolySegment",
"PolyRectangle",
"PolyArc",
"FillPoly",
"PolyFillRectangle",
"PolyFillArc",
"PutImage",
"GetImage",
"PolyText",
"PolyText",
"ImageText",
"ImageText",
"CreateColormap",
"FreeColormap",
"CopyColormapAndFree",
"InstallColormap",
"UninstallColormap",
"ListInstalledColormaps",
"AllocColor",
"AllocNamedColor",
"AllocColorCells",
"AllocColorPlanes",
"FreeColors",
"StoreColors",
"StoreNamedColor",
"QueryColors",
"LookupColor",
"CreateCursor",
"CreateGlyphCursor",
"FreeCursor",
"RecolorCursor",
"QueryBestSize",
"QueryExtension",
"ListExtensions",
"ChangeKeyboardMapping",
"GetKeyboardMapping",
"ChangeKeyboardControl",
"GetKeyboardControl",
"Bell",
"ChangePointerControl",
"GetPointerControl",
"SetScreenSaver",
"GetScreenSaver",
"ChangeHosts",
"ListHosts",
"SetAccessControl",
"SetCloseDownMode",
"KillClient",
"RotateProperties",
"ForceScreenSaver",
"SetPointerMapping",
"GetPointerMapping",
"SetModifierMapping",
"GetModifierMapping",
"major 120",
"major 121",
"major 122",
"major 123",
"major 124",
"major 125",
"major 126",
"NoOperation",
};
static const char *labelEvent[] = {
"error",
"reply",
"KeyPress",
"KeyRelease",
"ButtonPress",
"ButtonRelease",
"MotionNotify",
"EnterNotify",
"LeaveNotify",
"FocusIn",
"FocusOut",
"KeymapNotify",
"Expose",
"GraphicsExpose",
"NoExpose",
"VisibilityNotify",
"CreateNotify",
"DestroyNotify",
"UnmapNotify",
"MapNotify",
"MapRequest",
"ReparentNotify",
"ConfigureNotify",
"ConfigureRequest",
"GravityNotify",
"ResizeRequest",
"CirculateNotify",
"CirculateRequest",
"PropertyNotify",
"SelectionClear",
"SelectionRequest",
"SelectionNotify",
"ColormapNotify",
"ClientMessage",
"MappingNotify",
};
static const char *labelSendEvent[] = {
"",
" (from SendEvent)",
};
/*
*
* TODO: what exactly does this, what happens if we leave stuff out?
*
*/
void manage_window(xcb_property_handlers_t *prophs, xcb_connection_t *c, xcb_window_t window, window_attributes_t wa)
{
printf("managing window.\n");
xcb_drawable_t d = { window };
xcb_get_geometry_cookie_t geomc;
xcb_get_geometry_reply_t *geom;
xcb_get_window_attributes_reply_t *attr = 0;
if(wa.tag == TAG_COOKIE)
{
attr = xcb_get_window_attributes_reply(c, wa.u.cookie, 0);
if(!attr)
return;
if(attr->map_state != XCB_MAP_STATE_VIEWABLE)
{
printf("Window 0x%08x is not mapped. Ignoring.\n", window);
free(attr);
return;
}
wa.tag = TAG_VALUE;
wa.u.override_redirect = attr->override_redirect;
}
if(!wa.u.override_redirect && table_get(byChild, window))
{
printf("Window 0x%08x already managed. Ignoring.\n", window);
free(attr);
return;
}
if(wa.u.override_redirect)
{
printf("Window 0x%08x has override-redirect set. Ignoring.\n", window);
free(attr);
return;
}
geomc = xcb_get_geometry(c, d);
if(!attr)
{
wa.tag = TAG_COOKIE;
wa.u.cookie = xcb_get_window_attributes(c, window);
attr = xcb_get_window_attributes_reply(c, wa.u.cookie, 0);
}
geom = xcb_get_geometry_reply(c, geomc, 0);
if(attr && geom)
{
reparent_window(c, window, attr->visual, geom->root, geom->depth, geom->x, geom->y, geom->width, geom->height);
xcb_property_changed(prophs, XCB_PROPERTY_NEW_VALUE, window, WM_NAME);
}
free(attr);
free(geom);
}
/*
* Returns the colorpixel to use for the given hex color (think of HTML).
*
* The hex_color has to start with #, for example #FF00FF.
*
* NOTE that get_colorpixel() does _NOT_ check the given color code for validity.
* This has to be done by the caller.
*
*/
uint32_t get_colorpixel(xcb_connection_t *conn, xcb_window_t window, char *hex) {
#define RGB_8_TO_16(i) (65535 * ((i) & 0xFF) / 255)
char strgroups[3][3] = {{hex[1], hex[2], '\0'},
{hex[3], hex[4], '\0'},
{hex[5], hex[6], '\0'}};
int rgb16[3] = {RGB_8_TO_16(strtol(strgroups[0], NULL, 16)),
RGB_8_TO_16(strtol(strgroups[1], NULL, 16)),
RGB_8_TO_16(strtol(strgroups[2], NULL, 16))};
xcb_screen_t *root_screen = xcb_setup_roots_iterator(xcb_get_setup(conn)).data;
xcb_colormap_t colormapId = xcb_generate_id(conn);
xcb_create_colormap(conn, XCB_COLORMAP_ALLOC_NONE, colormapId, window, root_screen->root_visual);
xcb_alloc_color_reply_t *reply = xcb_alloc_color_reply(conn,
xcb_alloc_color(conn, colormapId, rgb16[0], rgb16[1], rgb16[2]), NULL);
if (!reply) {
printf("color fail\n");
exit(1);
}
uint32_t pixel = reply->pixel;
free(reply);
xcb_free_colormap(conn, colormapId);
return pixel;
}
/*
* (Re-)draws window decorations for a given Client
*
*/
void decorate_window(xcb_connection_t *conn, Client *client) {
uint32_t mask = 0;
uint32_t values[3];
i3Font *font = load_font(conn, pattern);
uint32_t background_color,
text_color,
border_color;
if (client->container->currently_focused == client) {
background_color = get_colorpixel(conn, client->frame, "#285577");
text_color = get_colorpixel(conn, client->frame, "#ffffff");
border_color = get_colorpixel(conn, client->frame, "#4c7899");
} else {
background_color = get_colorpixel(conn, client->frame, "#222222");
text_color = get_colorpixel(conn, client->frame, "#888888");
border_color = get_colorpixel(conn, client->frame, "#333333");
}
/* Our plan is the following:
- Draw a rect around the whole client in background_color
- Draw two lines in a lighter color
- Draw the window’s title
Note that xcb_image_text apparently adds 1xp border around the font? Can anyone confirm this?
*/
/* Draw a green rectangle around the window */
mask = XCB_GC_FOREGROUND;
values[0] = background_color;
xcb_change_gc(conn, client->titlegc, mask, values);
xcb_rectangle_t rect = {0, 0, client->width, client->height};
xcb_poly_fill_rectangle(conn, client->frame, client->titlegc, 1, &rect);
/* Draw the lines */
/* TODO: this needs to be more beautiful somewhen. maybe stdarg + change_gc(gc, ...) ? */
#define DRAW_LINE(colorpixel, x, y, to_x, to_y) { \
uint32_t draw_values[1]; \
draw_values[0] = colorpixel; \
xcb_change_gc(conn, client->titlegc, XCB_GC_FOREGROUND, draw_values); \
xcb_point_t points[] = {{x, y}, {to_x, to_y}}; \
xcb_poly_line(conn, XCB_COORD_MODE_ORIGIN, client->frame, client->titlegc, 2, points); \
}
DRAW_LINE(border_color, 2, 0, client->width, 0);
DRAW_LINE(border_color, 2, font->height + 3, 2 + client->width, font->height + 3);
/* Draw the font */
mask = XCB_GC_FOREGROUND | XCB_GC_BACKGROUND | XCB_GC_FONT;
values[0] = text_color;
values[1] = background_color;
values[2] = font->id;
xcb_change_gc(conn, client->titlegc, mask, values);
/* TODO: utf8? */
char *label;
asprintf(&label, "(%08x) %.*s", client->frame, client->name_len, client->name);
xcb_void_cookie_t text_cookie = xcb_image_text_8_checked(conn, strlen(label), client->frame,
client->titlegc, 3 /* X */, font->height /* Y = baseline of font */, label);
free(label);
}
void render_container(xcb_connection_t *connection, Container *container) {
Client *client;
uint32_t values[4];
uint32_t mask = XCB_CONFIG_WINDOW_X |
XCB_CONFIG_WINDOW_Y |
XCB_CONFIG_WINDOW_WIDTH |
XCB_CONFIG_WINDOW_HEIGHT;
i3Font *font = load_font(connection, pattern);
if (container->mode == MODE_DEFAULT) {
int num_clients = 0;
CIRCLEQ_FOREACH(client, &(container->clients), clients)
num_clients++;
printf("got %d clients in this default container.\n", num_clients);
int current_client = 0;
CIRCLEQ_FOREACH(client, &(container->clients), clients) {
/* TODO: rewrite this block so that the need to puke vanishes :) */
/* TODO: at the moment, every column/row is 200px. This
* needs to be changed to "percentage of the screen" by
* default and adjustable by the user if necessary.
*/
values[0] = container->col * container->width; /* x */
values[1] = container->row * container->height +
(container->height / num_clients) * current_client; /* y */
if (client->x != values[0] || client->y != values[1]) {
printf("frame needs to be pushed to %dx%d\n",
values[0], values[1]);
client->x = values[0];
client->y = values[1];
xcb_configure_window(connection, client->frame,
XCB_CONFIG_WINDOW_X | XCB_CONFIG_WINDOW_Y, values);
}
/* TODO: vertical default layout */
values[0] = container->width; /* width */
values[1] = container->height / num_clients; /* height */
if (client->width != values[0] || client->height != values[1]) {
client->width = values[0];
client->height = values[1];
xcb_configure_window(connection, client->frame,
XCB_CONFIG_WINDOW_WIDTH | XCB_CONFIG_WINDOW_HEIGHT, values);
}
/* TODO: hmm, only do this for new wins */
/* The coordinates of the child are relative to its frame, we
* add a border of 2 pixel to each value */
values[0] = 2;
values[1] = font->height + 2 + 2;
values[2] = client->width - (values[0] + 2);
values[3] = client->height - (values[1] + 2);
printf("child itself will be at %dx%d with size %dx%d\n",
values[0], values[1], values[2], values[3]);
xcb_configure_window(connection, client->child, mask, values);
decorate_window(connection, client);
current_client++;
}
} else {
/* TODO: Implement stacking */
}
}
void render_layout(xcb_connection_t *conn) {
int cols, rows;
xcb_screen_t *root_screen = xcb_setup_roots_iterator(xcb_get_setup(conn)).data;
int width = root_screen->width_in_pixels;
int height = root_screen->height_in_pixels;
int num_cols = table_dims.x, num_rows = table_dims.y;
printf("got %d rows and %d cols\n", num_rows, num_cols);
printf("each of them therefore is %d px width and %d px height\n",
width / num_cols, height / num_rows);
/* Go through the whole table and render what’s necessary */
for (cols = 0; cols < table_dims.x; cols++)
for (rows = 0; rows < table_dims.y; rows++)
if (table[cols][rows] != NULL) {
Container *con = table[cols][rows];
printf("container has %d colspan, %d rowspan\n",
con->colspan, con->rowspan);
/* Update position of the container */
con->row = rows;
con->col = cols;
con->width = (width / num_cols) * con->colspan;
con->height = (height / num_rows) * con->rowspan;
/* Render it */
render_container(conn, table[cols][rows]);
}
xcb_flush(conn);
}
/*
* Let’s own this window…
*
*/
void reparent_window(xcb_connection_t *conn, xcb_window_t child,
xcb_visualid_t visual, xcb_window_t root, uint8_t depth,
int16_t x, int16_t y, uint16_t width, uint16_t height) {
Client *new = table_get(byChild, child);
if (new == NULL) {
printf("oh, it's new\n");
new = calloc(sizeof(Client), 1);
new->x = -1;
new->y = -1;
}
uint32_t mask = 0;
uint32_t values[3];
/* Insert into the currently active container */
CIRCLEQ_INSERT_TAIL(&(CUR_CELL->clients), new, clients);
printf("currently_focused = %p\n", new);
CUR_CELL->currently_focused = new;
new->container = CUR_CELL;
new->frame = xcb_generate_id(conn);
new->child = child;
new->width = width;
new->height = height;
/* Don’t generate events for our new window, it should *not* be managed */
mask |= XCB_CW_OVERRIDE_REDIRECT;
values[0] = 1;
/* We want to know when… */
mask |= XCB_CW_EVENT_MASK;
values[1] = XCB_EVENT_MASK_BUTTON_PRESS | /* …mouse is pressed/released */
XCB_EVENT_MASK_BUTTON_RELEASE |
XCB_EVENT_MASK_EXPOSURE | /* …our window needs to be redrawn */
XCB_EVENT_MASK_ENTER_WINDOW /* …user moves cursor inside our window */;
printf("Reparenting 0x%08x under 0x%08x.\n", child, new->frame);
/* Yo dawg, I heard you like windows, so I create a window around your window… */
xcb_create_window(conn,
depth,
new->frame,
root,
x,
y,
width + LEFT + RIGHT,
height + TOP + BOTTOM,
/* border_width */ 0,
XCB_WINDOW_CLASS_INPUT_OUTPUT,
visual,
mask,
values);
xcb_change_save_set(conn, XCB_SET_MODE_INSERT, child);
/* Map the window on the screen (= make it visible) */
xcb_map_window(conn, new->frame);
/* Generate a graphics context for the titlebar */
new->titlegc = xcb_generate_id(conn);
xcb_create_gc(conn, new->titlegc, new->frame, 0, 0);
/* Draw decorations */
decorate_window(conn, new);
/* Put our data structure (Client) into the table */
table_put(byParent, new->frame, new);
table_put(byChild, child, new);
/* Moves the original window into the new frame we've created for it */
i3Font *font = load_font(conn, pattern);
xcb_reparent_window(conn, child, new->frame, 0, font->height);
/* We are interested in property changes */
mask = XCB_CW_EVENT_MASK;
values[0] = XCB_EVENT_MASK_PROPERTY_CHANGE |
XCB_EVENT_MASK_STRUCTURE_NOTIFY |
XCB_EVENT_MASK_ENTER_WINDOW |
XCB_EVENT_MASK_BUTTON_PRESS;
xcb_change_window_attributes(conn, child, mask, values);
/* We need to grab the mouse buttons for click to focus */
xcb_grab_button(conn, false, child, XCB_EVENT_MASK_BUTTON_PRESS,
XCB_GRAB_MODE_ASYNC, XCB_GRAB_MODE_ASYNC, root, XCB_NONE, 1 /* left mouse button */,
XCB_BUTTON_MASK_ANY /* don’t filter for any modifiers */);
/* Focus the new window */
xcb_set_input_focus(conn, XCB_INPUT_FOCUS_NONE, new->child, XCB_CURRENT_TIME);
render_layout(conn);
}
static bool focus_window_in_container(xcb_connection_t *connection, Container *container,
direction_t direction) {
/* If this container is empty, we’re done */
if (container->currently_focused == NULL)
return false;
Client *candidad;
if (direction == D_UP)
candidad = CIRCLEQ_PREV(container->currently_focused, clients);
else if (direction == D_DOWN)
candidad = CIRCLEQ_NEXT(container->currently_focused, clients);
/* If we don’t have anything to select, we’re done */
if (candidad == CIRCLEQ_END(&(container->clients)))
return false;
/* Set focus if we could successfully move */
container->currently_focused = candidad;
xcb_set_input_focus(connection, XCB_INPUT_FOCUS_NONE, candidad->child, XCB_CURRENT_TIME);
render_layout(connection);
return true;
}
static void focus_window(xcb_connection_t *connection, direction_t direction) {
printf("focusing direction %d\n", direction);
/* TODO: for horizontal default layout, this has to be expanded to LEFT/RIGHT */
if (direction == D_UP || direction == D_DOWN) {
/* Let’s see if we can perform up/down focus in the current container */
Container *container = CUR_CELL;
/* There always is a container. If not, current_col or current_row is wrong */
assert(container != NULL);
if (focus_window_in_container(connection, container, direction))
return;
} else if (direction == D_LEFT || direction == D_RIGHT) {
if (direction == D_RIGHT && cell_exists(current_col+1, current_row))
current_col++;
else if (direction == D_LEFT && cell_exists(current_col-1, current_row))
current_col--;
else {
printf("nah, not possible\n");
return;
}
if (CUR_CELL->currently_focused != NULL) {
xcb_set_input_focus(connection, XCB_INPUT_FOCUS_NONE,
CUR_CELL->currently_focused->child, XCB_CURRENT_TIME);
render_layout(connection);
}
} else {
printf("direction unhandled\n");
}
}
/*
* Tries to move the window inside its current container.
*
* Returns true if the window could be moved, false otherwise.
*
*/
static bool move_current_window_in_container(xcb_connection_t *connection, Client *client,
direction_t direction) {
Client *other = (direction == D_UP ? CIRCLEQ_PREV(client, clients) :
CIRCLEQ_NEXT(client, clients));
if (other == CIRCLEQ_END(&(client->container->clients)))
return false;
printf("i can do that\n");
/* We can move the client inside its current container */
CIRCLEQ_REMOVE(&(client->container->clients), client, clients);
if (direction == D_UP)
CIRCLEQ_INSERT_BEFORE(&(client->container->clients), other, client, clients);
else CIRCLEQ_INSERT_AFTER(&(client->container->clients), other, client, clients);
render_layout(connection);
return true;
}
/*
* Moves the current window to the given direction, creating a column/row if
* necessary
*
*/
static void move_current_window(xcb_connection_t *connection, direction_t direction) {
printf("moving window to direction %d\n", direction);
/* Get current window */
Container *container = CUR_CELL,
*new;
/* There has to be a container, see focus_window() */
assert(container != NULL);
/* If there is no window, we’re done */
if (container->currently_focused == NULL)
return;
/* As soon as the client is moved away, the next client in the old
* container needs to get focus, if any. Therefore, we save it here. */
Client *current_client = container->currently_focused;
Client *to_focus = CIRCLEQ_NEXT(current_client, clients);
if (to_focus == CIRCLEQ_END(&(container->clients)))
to_focus = NULL;
switch (direction) {
case D_LEFT:
if (current_col == 0)
return;
new = table[--current_col][current_row];
break;
case D_RIGHT:
if (current_col == (table_dims.x-1))
expand_table_cols();
new = table[++current_col][current_row];
break;
case D_UP:
if (move_current_window_in_container(connection, current_client, D_UP) ||
current_row == 0)
return;
new = table[current_col][--current_row];
break;
case D_DOWN:
if (move_current_window_in_container(connection, current_client, D_DOWN))
return;
if (current_row == (table_dims.y-1))
expand_table_rows();
new = table[current_col][++current_row];
break;
}
/* Remove it from the old container and put it into the new one */
CIRCLEQ_REMOVE(&(container->clients), current_client, clients);
CIRCLEQ_INSERT_TAIL(&(new->clients), current_client, clients);
/* Update data structures */
current_client->container = new;
container->currently_focused = to_focus;
new->currently_focused = current_client;
/* TODO: delete all empty columns/rows */
render_layout(connection);
}
/*
* "Snaps" the current container (not possible for windows, because it works at table base)
* to the given direction, that is, adjusts cellspan/rowspan
*
*/
static void snap_current_container(xcb_connection_t *connection, direction_t direction) {
printf("snapping container to direction %d\n", direction);
Container *container = CUR_CELL;
int i;
assert(container != NULL);
switch (direction) {
case D_LEFT:
/* Snap to the left is actually a move to the left and then a snap right */
move_current_window(connection, D_LEFT);
snap_current_container(connection, D_RIGHT);
return;
case D_RIGHT:
/* Check if the cell is used */
if (!cell_exists(container->col + 1, container->row) ||
table[container->col+1][container->row]->currently_focused != NULL) {
printf("cannot snap to right - the cell is already used\n");
return;
}
/* Check if there are other cells with rowspan, which are in our way.
* If so, reduce their rowspan. */
for (i = container->row-1; i >= 0; i--) {
printf("we got cell %d, %d with rowspan %d\n",
container->col+1, i, table[container->col+1][i]->rowspan);
while ((table[container->col+1][i]->rowspan-1) >= (container->row - i))
table[container->col+1][i]->rowspan--;
printf("new rowspan = %d\n", table[container->col+1][i]->rowspan);
}
container->colspan++;
break;
case D_UP:
move_current_window(connection, D_UP);
snap_current_container(connection, D_DOWN);
return;
case D_DOWN:
printf("snapping down\n");
if (!cell_exists(container->col, container->row+1) ||
table[container->col][container->row+1]->currently_focused != NULL) {
printf("cannot snap down - the cell is already used\n");
return;
}
for (i = container->col-1; i >= 0; i--) {
printf("we got cell %d, %d with colspan %d\n",
i, container->row+1, table[i][container->row+1]->colspan);
while ((table[i][container->row+1]->colspan-1) >= (container->col - i))
table[i][container->row+1]->colspan--;
printf("new colspan = %d\n", table[i][container->row+1]->colspan);
}
container->rowspan++;
break;
}
render_layout(connection);
}
int format_event(xcb_generic_event_t *e)
{
uint8_t sendEvent;
uint16_t seqnum;
sendEvent = (e->response_type & 0x80) ? 1 : 0;
e->response_type &= ~0x80;
seqnum = *((uint16_t *) e + 1);
switch(e->response_type)
{
case 0:
printf("Error %s on seqnum %d (%s).\n",
labelError[*((uint8_t *) e + 1)],
seqnum,
labelRequest[*((uint8_t *) e + 10)]);
break;
default:
printf("Event %s following seqnum %d%s.\n",
labelEvent[e->response_type],
seqnum,
labelSendEvent[sendEvent]);
break;
case XCB_KEYMAP_NOTIFY:
printf("Event %s%s.\n",
labelEvent[e->response_type],
labelSendEvent[sendEvent]);
break;
}
fflush(stdout);
return 1;
}
static int handleEvent(void *ignored, xcb_connection_t *c, xcb_generic_event_t *e)
{
return format_event(e);
}
/*
* Starts the given application with the given args.
*
*/
static void start_application(const char *path, const char *args) {
pid_t pid;
if ((pid = vfork()) == 0) {
/* This is the child */
char *argv[2];
/* TODO: For now, we ignore args. Later on, they should be parsed
correctly (like in the shell?) */
argv[0] = strdup(path);
argv[1] = NULL;
execve(path, argv, environment);
/* not reached */
}
}
/*
* Due to bindings like Mode_switch + <a>, we need to bind some keys in XCB_GRAB_MODE_SYNC.
* Therefore, we just replay all key presses.
*
*/
static int handle_key_release(void *ignored, xcb_connection_t *conn, xcb_key_release_event_t *event) {
printf("got key release, just passing\n");
xcb_allow_events(conn, ReplayKeyboard, event->time);
xcb_flush(conn);
return 1;
}
/*
* Parses a command, see file CMDMODE for more information
*
*/
static void parse_command(xcb_connection_t *conn, const char *command) {
printf("--- parsing command \"%s\" ---\n", command);
/* Hmm, just to be sure */
if (command[0] == '\0')
return;
/* Is it an <exec>? */
if (strncmp(command, "exec ", strlen("exec ")) == 0) {
printf("starting \"%s\"\n", command + strlen("exec "));
start_application(command+strlen("exec "), NULL);
return;
}
/* Is it a <with>? */
if (command[0] == 'w') {
/* TODO: implement */
printf("not yet implemented.\n");
return;
}
/* It's a normal <cmd> */
int times;
char *rest = NULL;
enum { ACTION_FOCUS, ACTION_MOVE, ACTION_SNAP } action = ACTION_FOCUS;
direction_t direction;
times = strtol(command, &rest, 10);
if (rest == NULL) {
printf("Invalid command: Consists only of a movement\n");
return;
}
if (*rest == 'm' || *rest == 's') {
action = (*rest == 'm' ? ACTION_MOVE : ACTION_SNAP);
rest++;
}
/* Now perform action to <where> */
while (*rest != '\0') {
/* TODO: tags */
if (*rest == 'h')
direction = D_LEFT;
else if (*rest == 'j')
direction = D_DOWN;
else if (*rest == 'k')
direction = D_UP;
else if (*rest == 'l')
direction = D_RIGHT;
else {
printf("unknown direction: %c\n", *rest);
return;
}
if (action == ACTION_FOCUS)
focus_window(conn, direction);
else if (action == ACTION_MOVE)
move_current_window(conn, direction);
else if (action == ACTION_SNAP)
snap_current_container(conn, direction);
rest++;
}
printf("--- done ---\n");
}
/*
* There was a key press. We lookup the key symbol and see if there are any bindings
* on that. This allows to do things like binding special characters (think of ä) to
* functions to get one more modifier while not losing AltGr :-)
* TODO: this description needs to be more understandable
*
*/
static int handle_key_press(void *ignored, xcb_connection_t *conn, xcb_key_press_event_t *event) {
printf("Keypress %d\n", event->detail);
/* We need to get the keysym group (There are group 1 to group 4, each holding
two keysyms (without shift and with shift) using Xkb because X fails to
provide them reliably (it works in Xephyr, it does not in real X) */
XkbStateRec state;
if (XkbGetState(xkbdpy, XkbUseCoreKbd, &state) == Success && (state.group+1) == 2)
event->state |= 0x2;
printf("state %d\n", event->state);
/* Find the binding */
Binding *bind, *best_match = TAILQ_END(&bindings);
TAILQ_FOREACH(bind, &bindings, bindings) {
if (bind->keycode == event->detail &&
(bind->mods & event->state) == bind->mods) {
if (best_match == TAILQ_END(&bindings) ||
bind->mods > best_match->mods)
best_match = bind;
}
}
/* No match? Then it was an actively grabbed key, that is with Mode_switch, and
the user did not press Mode_switch, so just pass it… */
if (best_match == TAILQ_END(&bindings)) {
xcb_allow_events(conn, ReplayKeyboard, event->time);
xcb_flush(conn);
return 1;
}
if (event->state & 0x2) {
printf("that's mode_switch\n");
parse_command(conn, best_match->command);
printf("ok, hiding this event.\n");
xcb_allow_events(conn, SyncKeyboard, event->time);
xcb_flush(conn);
return 1;
}
parse_command(conn, best_match->command);
return 1;
}
static void set_focus(xcb_connection_t *conn, Client *client) {
/* Update container */
Client *old_client = client->container->currently_focused;
client->container->currently_focused = client;
current_col = client->container->col;
current_row = client->container->row;
/* Set focus to the entered window, and flush xcb buffer immediately */
xcb_set_input_focus(conn, XCB_INPUT_FOCUS_NONE, client->child, XCB_CURRENT_TIME);
/* Update last/current client’s titlebar */
if (old_client != NULL)
decorate_window(conn, old_client);
decorate_window(conn, client);
xcb_flush(conn);
}
/*
* When the user moves the mouse pointer onto a window, this callback gets called.
*
*/
static int handle_enter_notify(void *ignored, xcb_connection_t *conn, xcb_enter_notify_event_t *event) {
printf("enter_notify\n");
/* This was either a focus for a client’s parent (= titlebar)… */
Client *client = table_get(byParent, event->event);
/* …or the client itself */
if (client == NULL)
client = table_get(byChild, event->event);
/* If not, then this event is not interesting. This should not happen */
if (client == NULL) {
printf("DEBUG: Uninteresting enter_notify-event?\n");
return 1;
}
set_focus(conn, client);
return 1;
}
static int handle_button_press(void *ignored, xcb_connection_t *conn, xcb_button_press_event_t *event) {
printf("button press!\n");
/* This was either a focus for a client’s parent (= titlebar)… */
Client *client = table_get(byChild, event->event);
if (client == NULL)
client = table_get(byParent, event->event);
if (client == NULL)
return 1;
xcb_window_t root = xcb_setup_roots_iterator(xcb_get_setup(conn)).data->root;
xcb_screen_t *root_screen = xcb_setup_roots_iterator(xcb_get_setup(conn)).data;
/* Set focus in any case */
set_focus(conn, client);
/* Let’s see if this was on the borders (= resize). If not, we’re done */
i3Font *font = load_font(conn, pattern);
printf("press button on x=%d, y=%d\n", event->event_x, event->event_y);
if (event->event_y <= (font->height + 2))
return 1;
printf("that was resize\n");
/* Open a new window, the resizebar. Grab the pointer and move the window around
as the user moves the pointer. */
/* TODO: the whole logic is missing. this is just a proof of concept */
xcb_window_t grabwin = xcb_generate_id(conn);
uint32_t mask = 0;
uint32_t values[3];
xcb_create_window(conn,
0,
grabwin,
root,
0, /* x */
0, /* y */
root_screen->width_in_pixels, /* width */
root_screen->height_in_pixels, /* height */
/* border_width */ 0,
XCB_WINDOW_CLASS_INPUT_ONLY,
root_screen->root_visual,
0,
values);
/* Map the window on the screen (= make it visible) */
xcb_map_window(conn, grabwin);
xcb_window_t helpwin = xcb_generate_id(conn);
mask = XCB_CW_BACK_PIXEL;
values[0] = root_screen->white_pixel;
xcb_create_window(conn, root_screen->root_depth, helpwin, root,
event->root_x,
0,
5,
root_screen->height_in_pixels,
/* bordor */ 0,
XCB_WINDOW_CLASS_INPUT_OUTPUT,
root_screen->root_visual,
mask,
values);
xcb_map_window(conn, helpwin);
xcb_circulate_window(conn, XCB_CIRCULATE_RAISE_LOWEST, helpwin);
xcb_grab_pointer(conn, false, root, XCB_EVENT_MASK_BUTTON_RELEASE | XCB_EVENT_MASK_POINTER_MOTION,
XCB_GRAB_MODE_ASYNC, XCB_GRAB_MODE_ASYNC, grabwin, XCB_NONE, XCB_CURRENT_TIME);
xcb_flush(conn);
xcb_generic_event_t *inside_event;
/* I’ve always wanted to have my own eventhandler… */
while ((inside_event = xcb_wait_for_event(conn))) {
/* Same as get_event_handler in xcb */
int nr = inside_event->response_type;
if (nr == 0) {
handleEvent(NULL, conn, inside_event);
continue;
}
assert(nr < 256);
nr &= XCB_EVENT_RESPONSE_TYPE_MASK;
assert(nr >= 2);
/* Check if we need to escape this loop… */
if (nr == XCB_BUTTON_RELEASE)
break;
switch (nr) {
case XCB_MOTION_NOTIFY:
values[0] = ((xcb_motion_notify_event_t*)inside_event)->root_x;
xcb_configure_window(conn, helpwin, XCB_CONFIG_WINDOW_X, values);
xcb_flush(conn);
break;
case XCB_EXPOSE:
/* Use original handler */
xcb_event_handle(&evenths, inside_event);
break;
default:
printf("Ignoring event of type %d\n", nr);
break;
}
printf("---\n");
free(inside_event);
}
xcb_ungrab_pointer(conn, XCB_CURRENT_TIME);
xcb_destroy_window(conn, helpwin);
xcb_destroy_window(conn, grabwin);
xcb_flush(conn);
return 1;
}
int handle_map_notify_event(void *prophs, xcb_connection_t *c, xcb_map_notify_event_t *e)
{
window_attributes_t wa = { TAG_VALUE };
wa.u.override_redirect = e->override_redirect;
printf("MapNotify for 0x%08x.\n", e->window);
manage_window(prophs, c, e->window, wa);
return 1;
}
/*
* Our window decorations were unmapped. That means, the window will be killed now,
* so we better clean up before.
*
*/
int handle_unmap_notify_event(void *data, xcb_connection_t *c, xcb_unmap_notify_event_t *e) {
Client *client = table_remove(byChild, e->event);
xcb_window_t root;
printf("UnmapNotify for 0x%08x (received from 0x%08x): ", e->window, e->event);
if(!client)
{
printf("not a managed window. Ignoring.\n");
return 0;
}
int rows, cols;
Client *con_client;
for (cols = 0; cols < table_dims.x; cols++)
for (rows = 0; rows < table_dims.y; rows++)
CIRCLEQ_FOREACH(con_client, &(table[cols][rows]->clients), clients)
if (con_client == client) {
printf("removing from container\n");
if (client->container->currently_focused == client)
client->container->currently_focused = NULL;
CIRCLEQ_REMOVE(&(table[cols][rows]->clients), con_client, clients);
break;
}
root = xcb_setup_roots_iterator(xcb_get_setup(c)).data->root;
printf("child of 0x%08x.\n", client->frame);
xcb_reparent_window(c, client->child, root, 0, 0);
xcb_destroy_window(c, client->frame);
xcb_flush(c);
table_remove(byParent, client->frame);
free(client);
render_layout(c);
return 1;
}
/*
* Called when a window changes its title
*
*/
static int handle_windowname_change(void *data, xcb_connection_t *conn, uint8_t state,
xcb_window_t window, xcb_atom_t atom, xcb_get_property_reply_t *prop) {
printf("window's name changed.\n");
Client *client = table_get(byChild, window);
if (client == NULL)
return 1;
client->name_len = xcb_get_property_value_length(prop);
client->name = malloc(client->name_len);
strncpy(client->name, xcb_get_property_value(prop), client->name_len);
printf("rename to \"%.*s\".\n", client->name_len, client->name);
decorate_window(conn, client);
xcb_flush(conn);
return 1;
}
static int handleExposeEvent(void *data, xcb_connection_t *c, xcb_expose_event_t *e) {
printf("exposeevent\n");
Client *client = table_get(byParent, e->window);
if(!client || e->count != 0)
return 1;
decorate_window(c, client);
return 1;
}
void manage_existing_windows(xcb_connection_t *c, xcb_property_handlers_t *prophs, xcb_window_t root) {
xcb_query_tree_cookie_t wintree;
xcb_query_tree_reply_t *rep;
int i, len;
xcb_window_t *children;
xcb_get_window_attributes_cookie_t *cookies;
wintree = xcb_query_tree(c, root);
rep = xcb_query_tree_reply(c, wintree, 0);
if(!rep)
return;
len = xcb_query_tree_children_length(rep);
cookies = malloc(len * sizeof(*cookies));
if(!cookies)
{
free(rep);
return;
}
children = xcb_query_tree_children(rep);
for(i = 0; i < len; ++i)
cookies[i] = xcb_get_window_attributes(c, children[i]);
for(i = 0; i < len; ++i)
{
window_attributes_t wa = { TAG_COOKIE, { cookies[i] } };
manage_window(prophs, c, children[i], wa);
}
free(rep);
}
int main(int argc, char *argv[], char *env[]) {
int i, e = 0;
for (i = 0; (env[i] != NULL); i++)
if (strncmp(env[i], "LC_", strlen("LC_")) == 0 ||
strncmp(env[i], "LANG=", strlen("LANG=")) == 0 ||
strncmp(env[i], "DISPLAY=", strlen("DISPLAY=")) == 0) {
printf("Passing environment \"%s\"\n", env[i]);
environment = realloc(environment, sizeof(char*) * ++e);
environment[e-1] = env[i];
}
/* environment has to be NULL-terminated */
environment = realloc(environment, sizeof(char*) * ++e);
environment[e-1] = NULL;
init_table();
xcb_connection_t *c;
xcb_property_handlers_t prophs;
xcb_window_t root;
int screens;
memset(&evenths, 0, sizeof(xcb_event_handlers_t));
memset(&prophs, 0, sizeof(xcb_property_handlers_t));
byChild = alloc_table();
byParent = alloc_table();
TAILQ_INIT(&bindings);
c = xcb_connect(NULL, &screens);
printf("x screen is %d\n", screens);
/* TODO: this has to be more beautiful somewhen */
int major, minor, error;
major = XkbMajorVersion;
minor = XkbMinorVersion;
int evBase, errBase;
if ((xkbdpy = XkbOpenDisplay(getenv("DISPLAY"), &evBase, &errBase, &major, &minor, &error)) == NULL) {
fprintf(stderr, "XkbOpenDisplay() failed\n");
return 1;
}
int i1;
if (!XkbQueryExtension(xkbdpy,&i1,&evBase,&errBase,&major,&minor)) {
fprintf(stderr, "XKB not supported by X-server\n");
return 1;
}
/* end of ugliness */
xcb_event_handlers_init(c, &evenths);
for(i = 2; i < 128; ++i)
xcb_event_set_handler(&evenths, i, handleEvent, 0);
for(i = 0; i < 256; ++i)
xcb_event_set_error_handler(&evenths, i, (xcb_generic_error_handler_t) handleEvent, 0);
/* Expose = an Application should redraw itself. That is, we have to redraw our
* contents (= top/bottom bar, titlebars for each window) */
xcb_event_set_expose_handler(&evenths, handleExposeEvent, 0);
/* Key presses/releases are pretty obvious, I think */
xcb_event_set_key_press_handler(&evenths, handle_key_press, 0);
xcb_event_set_key_release_handler(&evenths, handle_key_release, 0);
/* Enter window = user moved his mouse over the window */
xcb_event_set_enter_notify_handler(&evenths, handle_enter_notify, 0);
/* Button press = user pushed a mouse button over one of our windows */
xcb_event_set_button_press_handler(&evenths, handle_button_press, 0);
xcb_event_set_unmap_notify_handler(&evenths, handle_unmap_notify_event, 0);
xcb_property_handlers_init(&prophs, &evenths);
xcb_event_set_map_notify_handler(&evenths, handle_map_notify_event, &prophs);
xcb_watch_wm_name(&prophs, 128, handle_windowname_change, 0);
root = xcb_aux_get_screen(c, screens)->root;
root_win = root;
uint32_t mask = XCB_CW_EVENT_MASK;
uint32_t values[] = { XCB_EVENT_MASK_SUBSTRUCTURE_NOTIFY | XCB_EVENT_MASK_PROPERTY_CHANGE };
xcb_change_window_attributes(c, root, mask, values);
#define BIND(key, modifier, cmd) { \
Binding *new = malloc(sizeof(Binding)); \
new->keycode = key; \
new->mods = modifier; \
new->command = cmd; \
TAILQ_INSERT_TAIL(&bindings, new, bindings); \
}
/* 38 = 'a' */
BIND(38, BIND_MODE_SWITCH, "foo");
BIND(30, 0, "exec /usr/pkg/bin/urxvt");
BIND(44, BIND_MOD_1, "h");
BIND(45, BIND_MOD_1, "j");
BIND(46, BIND_MOD_1, "k");
BIND(47, BIND_MOD_1, "l");
BIND(44, BIND_MOD_1 | BIND_CONTROL, "sh");
BIND(45, BIND_MOD_1 | BIND_CONTROL, "sj");
BIND(46, BIND_MOD_1 | BIND_CONTROL, "sk");
BIND(47, BIND_MOD_1 | BIND_CONTROL, "sl");
BIND(44, BIND_MOD_1 | BIND_SHIFT, "mh");
BIND(45, BIND_MOD_1 | BIND_SHIFT, "mj");
BIND(46, BIND_MOD_1 | BIND_SHIFT, "mk");
BIND(47, BIND_MOD_1 | BIND_SHIFT, "ml");
Binding *bind;
TAILQ_FOREACH(bind, &bindings, bindings) {
printf("Grabbing %d\n", bind->keycode);
if (bind->mods & BIND_MODE_SWITCH)
xcb_grab_key(c, 0, root, 0, bind->keycode, XCB_GRAB_MODE_SYNC, XCB_GRAB_MODE_SYNC);
else xcb_grab_key(c, 0, root, bind->mods, bind->keycode, XCB_GRAB_MODE_SYNC, XCB_GRAB_MODE_ASYNC);
}
start_application(TERMINAL, NULL);
xcb_flush(c);
manage_existing_windows(c, &prophs, root);
xcb_event_wait_for_event_loop(&evenths);
/* not reached */
return 0;
}