7b01bc5eb7
The case of an X11 server having multiple displays is handled correctly by the code in src/mainx.c. However, due to some functions not being correctly refactored and still getting the first screen (and also the first root window) from the XCB connection, i3 was operating on the wrong root window.
366 lines
13 KiB
C
366 lines
13 KiB
C
/*
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* vim:ts=8:expandtab
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*
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* i3 - an improved dynamic tiling window manager
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*
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* © 2009 Michael Stapelberg and contributors
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*
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* See file LICENSE for license information.
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*
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* i3-input/main.c: Utility which lets the user input commands and sends them
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* to i3.
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*
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*/
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#include <ev.h>
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#include <stdio.h>
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#include <sys/types.h>
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#include <stdlib.h>
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#include <stdbool.h>
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#include <unistd.h>
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#include <string.h>
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#include <errno.h>
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#include <err.h>
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#include <stdint.h>
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#include <getopt.h>
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#include <xcb/xcb.h>
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#include <xcb/xcb_aux.h>
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#include <xcb/xcb_event.h>
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#include <xcb/xcb_keysyms.h>
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#include <X11/keysym.h>
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#include "keysym2ucs.h"
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#include "i3-input.h"
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static int sockfd;
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static xcb_key_symbols_t *symbols;
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static int modeswitchmask;
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static int numlockmask;
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static bool modeswitch_active = false;
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static xcb_window_t win;
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static xcb_pixmap_t pixmap;
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static xcb_gcontext_t pixmap_gc;
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static char *glyphs_ucs[512];
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static char *glyphs_utf8[512];
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static int input_position;
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static int font_height;
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static char *command_prefix;
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static char *prompt;
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static int prompt_len;
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static int limit;
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xcb_window_t root;
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/*
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* Concats the glyphs (either UCS-2 or UTF-8) to a single string, suitable for
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* rendering it (UCS-2) or sending it to i3 (UTF-8).
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*
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*/
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static uint8_t *concat_strings(char **glyphs, int max) {
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uint8_t *output = calloc(max+1, 4);
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uint8_t *walk = output;
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for (int c = 0; c < max; c++) {
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printf("at %c\n", glyphs[c][0]);
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/* if the first byte is 0, this has to be UCS2 */
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if (glyphs[c][0] == '\0') {
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memcpy(walk, glyphs[c], 2);
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walk += 2;
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} else {
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strcpy((char*)walk, glyphs[c]);
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walk += strlen(glyphs[c]);
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}
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}
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printf("output = %s\n", output);
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return output;
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}
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/*
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* Handles expose events (redraws of the window) and rendering in general. Will
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* be called from the code with event == NULL or from X with event != NULL.
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*
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*/
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static int handle_expose(void *data, xcb_connection_t *conn, xcb_expose_event_t *event) {
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printf("expose!\n");
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/* re-draw the background */
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xcb_rectangle_t border = {0, 0, 500, font_height + 8}, inner = {2, 2, 496, font_height + 8 - 4};
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xcb_change_gc_single(conn, pixmap_gc, XCB_GC_FOREGROUND, get_colorpixel(conn, "#FF0000"));
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xcb_poly_fill_rectangle(conn, pixmap, pixmap_gc, 1, &border);
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xcb_change_gc_single(conn, pixmap_gc, XCB_GC_FOREGROUND, get_colorpixel(conn, "#000000"));
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xcb_poly_fill_rectangle(conn, pixmap, pixmap_gc, 1, &inner);
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/* restore font color */
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xcb_change_gc_single(conn, pixmap_gc, XCB_GC_FOREGROUND, get_colorpixel(conn, "#FFFFFF"));
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uint8_t *con = concat_strings(glyphs_ucs, input_position);
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char *full_text = (char*)con;
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if (prompt != NULL) {
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full_text = malloc((prompt_len + input_position) * 2 + 1);
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if (full_text == NULL)
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err(EXIT_FAILURE, "malloc() failed\n");
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memcpy(full_text, prompt, prompt_len * 2);
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memcpy(full_text + (prompt_len * 2), con, input_position * 2);
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}
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xcb_image_text_16(conn, input_position + prompt_len, pixmap, pixmap_gc, 4 /* X */,
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font_height + 2 /* Y = baseline of font */, (xcb_char2b_t*)full_text);
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/* Copy the contents of the pixmap to the real window */
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xcb_copy_area(conn, pixmap, win, pixmap_gc, 0, 0, 0, 0, /* */ 500, font_height + 8);
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xcb_flush(conn);
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free(con);
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if (prompt != NULL)
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free(full_text);
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return 1;
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}
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/*
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* Deactivates the Mode_switch bit upon release of the Mode_switch key.
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*
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*/
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static int handle_key_release(void *ignored, xcb_connection_t *conn, xcb_key_release_event_t *event) {
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printf("releasing %d, state raw = %d\n", event->detail, event->state);
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/* fix state */
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event->state &= ~numlockmask;
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xcb_keysym_t sym = xcb_key_press_lookup_keysym(symbols, event, event->state);
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if (sym == XK_Mode_switch) {
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printf("Mode switch disabled\n");
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modeswitch_active = false;
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}
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return 1;
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}
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static void finish_input() {
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uint8_t *command = concat_strings(glyphs_utf8, input_position);
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char *full_command = (char*)command;
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/* prefix the command if a prefix was specified on commandline */
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if (command_prefix != NULL) {
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if (asprintf(&full_command, "%s%s", command_prefix, command) == -1)
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err(EXIT_FAILURE, "asprintf() failed\n");
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}
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printf("command = %s\n", full_command);
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ipc_send_message(sockfd, strlen(full_command), 0, (uint8_t*)full_command);
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#if 0
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free(command);
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return 1;
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#endif
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exit(0);
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}
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/*
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* Handles keypresses by converting the keycodes to keysymbols, then the
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* keysymbols to UCS-2. If the conversion succeeded, the glyph is saved in the
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* internal buffers and displayed in the input window.
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*
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* Also handles backspace (deleting one character) and return (sending the
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* command to i3).
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*
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*/
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static int handle_key_press(void *ignored, xcb_connection_t *conn, xcb_key_press_event_t *event) {
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printf("Keypress %d, state raw = %d\n", event->detail, event->state);
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/* fix state */
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if (modeswitch_active)
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event->state |= modeswitchmask;
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/* Apparantly, after activating numlock once, the numlock modifier
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* stays turned on (use xev(1) to verify). So, to resolve useful
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* keysyms, we remove the numlock flag from the event state */
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event->state &= ~numlockmask;
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xcb_keysym_t sym = xcb_key_press_lookup_keysym(symbols, event, event->state);
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if (sym == XK_Mode_switch) {
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printf("Mode switch enabled\n");
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modeswitch_active = true;
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return 1;
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}
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if (sym == XK_Return)
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finish_input();
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if (sym == XK_BackSpace) {
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if (input_position == 0)
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return 1;
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input_position--;
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free(glyphs_ucs[input_position]);
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free(glyphs_utf8[input_position]);
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handle_expose(NULL, conn, NULL);
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return 1;
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}
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if (sym == XK_Escape) {
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exit(0);
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}
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/* TODO: handle all of these? */
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printf("is_keypad_key = %d\n", xcb_is_keypad_key(sym));
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printf("is_private_keypad_key = %d\n", xcb_is_private_keypad_key(sym));
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printf("xcb_is_cursor_key = %d\n", xcb_is_cursor_key(sym));
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printf("xcb_is_pf_key = %d\n", xcb_is_pf_key(sym));
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printf("xcb_is_function_key = %d\n", xcb_is_function_key(sym));
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printf("xcb_is_misc_function_key = %d\n", xcb_is_misc_function_key(sym));
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printf("xcb_is_modifier_key = %d\n", xcb_is_modifier_key(sym));
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if (xcb_is_modifier_key(sym) || xcb_is_cursor_key(sym))
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return 1;
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printf("sym = %c (%d)\n", sym, sym);
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/* convert the keysym to UCS */
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uint16_t ucs = keysym2ucs(sym);
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if ((int16_t)ucs == -1) {
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fprintf(stderr, "Keysym could not be converted to UCS, skipping\n");
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return 1;
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}
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/* store the UCS into a string */
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uint8_t inp[3] = {(ucs & 0xFF00) >> 8, (ucs & 0xFF), 0};
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printf("inp[0] = %02x, inp[1] = %02x, inp[2] = %02x\n", inp[0], inp[1], inp[2]);
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/* convert it to UTF-8 */
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char *out = convert_ucs_to_utf8((char*)inp);
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printf("converted to %s\n", out);
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glyphs_ucs[input_position] = malloc(3 * sizeof(uint8_t));
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if (glyphs_ucs[input_position] == NULL)
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err(EXIT_FAILURE, "malloc() failed\n");
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memcpy(glyphs_ucs[input_position], inp, 3);
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glyphs_utf8[input_position] = strdup(out);
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input_position++;
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if (input_position == limit)
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finish_input();
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handle_expose(NULL, conn, NULL);
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return 1;
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}
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int main(int argc, char *argv[]) {
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char *socket_path;
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if ((socket_path = getenv("I3SOCK")) == NULL) {
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socket_path = "/tmp/i3-ipc.sock";
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}
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char *pattern = "-misc-fixed-medium-r-normal--13-120-75-75-C-70-iso10646-1";
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int o, option_index = 0;
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static struct option long_options[] = {
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{"socket", required_argument, 0, 's'},
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{"version", no_argument, 0, 'v'},
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{"limit", required_argument, 0, 'l'},
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{"prompt", required_argument, 0, 'P'},
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{"prefix", required_argument, 0, 'p'},
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{"font", required_argument, 0, 'f'},
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{"help", no_argument, 0, 'h'},
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{0, 0, 0, 0}
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};
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char *options_string = "s:p:P:f:l:vh";
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while ((o = getopt_long(argc, argv, options_string, long_options, &option_index)) != -1) {
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switch (o) {
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case 's':
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FREE(socket_path);
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socket_path = strdup(optarg);
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break;
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case 'v':
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printf("i3-input " I3_VERSION);
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return 0;
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case 'p':
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FREE(command_prefix);
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command_prefix = strdup(optarg);
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break;
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case 'l':
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limit = atoi(optarg);
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break;
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case 'P':
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FREE(prompt);
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prompt = strdup(optarg);
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break;
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case 'f':
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FREE(pattern);
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pattern = strdup(optarg);
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break;
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case 'h':
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printf("i3-input " I3_VERSION);
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printf("i3-input [-s <socket>] [-p <prefix>] [-l <limit>] [-P <prompt>] [-f <font>] [-v]\n");
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return 0;
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}
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}
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sockfd = connect_ipc(socket_path);
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if (prompt != NULL)
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prompt = convert_utf8_to_ucs2(prompt, &prompt_len);
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int screens;
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xcb_connection_t *conn = xcb_connect(NULL, &screens);
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if (xcb_connection_has_error(conn))
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die("Cannot open display\n");
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xcb_screen_t *root_screen = xcb_aux_get_screen(conn, screens);
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root = root_screen->root;
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/* Set up event handlers for key press and key release */
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xcb_event_handlers_t evenths;
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memset(&evenths, 0, sizeof(xcb_event_handlers_t));
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xcb_event_handlers_init(conn, &evenths);
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xcb_event_set_key_press_handler(&evenths, handle_key_press, NULL);
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xcb_event_set_key_release_handler(&evenths, handle_key_release, NULL);
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xcb_event_set_expose_handler(&evenths, handle_expose, NULL);
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modeswitchmask = get_mod_mask(conn, XK_Mode_switch);
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numlockmask = get_mod_mask(conn, XK_Num_Lock);
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symbols = xcb_key_symbols_alloc(conn);
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uint32_t font_id = get_font_id(conn, pattern, &font_height);
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/* Open an input window */
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win = open_input_window(conn, 500, font_height + 8);
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/* Create pixmap */
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pixmap = xcb_generate_id(conn);
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pixmap_gc = xcb_generate_id(conn);
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xcb_create_pixmap(conn, root_screen->root_depth, pixmap, win, 500, font_height + 8);
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xcb_create_gc(conn, pixmap_gc, pixmap, 0, 0);
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/* Set input focus (we have override_redirect=1, so the wm will not do
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* this for us) */
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xcb_set_input_focus(conn, XCB_INPUT_FOCUS_POINTER_ROOT, win, XCB_CURRENT_TIME);
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/* Create graphics context */
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xcb_change_gc_single(conn, pixmap_gc, XCB_GC_FONT, font_id);
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/* Grab the keyboard to get all input */
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xcb_flush(conn);
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/* Try (repeatedly, if necessary) to grab the keyboard. We might not
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* get the keyboard at the first attempt because of the keybinding
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* still being active when started via a wm’s keybinding. */
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xcb_grab_keyboard_cookie_t cookie;
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xcb_grab_keyboard_reply_t *reply = NULL;
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int count = 0;
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while ((reply == NULL || reply->status != XCB_GRAB_STATUS_SUCCESS) && (count++ < 500)) {
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cookie = xcb_grab_keyboard(conn, false, win, XCB_CURRENT_TIME, XCB_GRAB_MODE_ASYNC, XCB_GRAB_MODE_ASYNC);
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reply = xcb_grab_keyboard_reply(conn, cookie, NULL);
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usleep(1000);
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}
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if (reply->status != XCB_GRAB_STATUS_SUCCESS) {
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fprintf(stderr, "Could not grab keyboard, status = %d\n", reply->status);
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exit(-1);
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}
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xcb_flush(conn);
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xcb_event_wait_for_event_loop(&evenths);
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return 0;
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}
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