Drew DeVault
7 years ago
parent
1fe3cb8965
commit
066143adef
@ -0,0 +1,101 @@
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#include <stdint.h>
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#include <stddef.h>
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#include "unicode.h"
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size_t utf8_chsize(uint32_t ch) {
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if (ch < 0x80) {
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return 1;
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} else if (ch < 0x800) {
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return 2;
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} else if (ch < 0x10000) {
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return 3;
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}
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return 4;
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}
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static const uint8_t masks[] = {
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0x7F,
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0x1F,
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0x0F,
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0x07,
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0x03,
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0x01
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};
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uint32_t utf8_decode(const char **char_str) {
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uint8_t **s = (uint8_t **)char_str;
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uint32_t cp = 0;
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if (**s < 128) {
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// shortcut
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cp = **s;
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++*s;
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return cp;
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}
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int size = utf8_size((char *)*s);
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if (size == -1) {
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++*s;
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return UTF8_INVALID;
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}
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uint8_t mask = masks[size - 1];
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cp = **s & mask;
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++*s;
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while (--size) {
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cp <<= 6;
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cp |= **s & 0x3f;
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++*s;
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}
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return cp;
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}
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size_t utf8_encode(char *str, uint32_t ch) {
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size_t len = 0;
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uint8_t first;
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if (ch < 0x80) {
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first = 0;
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len = 1;
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} else if (ch < 0x800) {
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first = 0xc0;
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len = 2;
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} else if (ch < 0x10000) {
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first = 0xe0;
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len = 3;
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} else {
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first = 0xf0;
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len = 4;
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}
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for (size_t i = len - 1; i > 0; --i) {
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str[i] = (ch & 0x3f) | 0x80;
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ch >>= 6;
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}
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str[0] = ch | first;
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return len;
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}
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static const struct {
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uint8_t mask;
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uint8_t result;
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int octets;
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} sizes[] = {
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{ 0x80, 0x00, 1 },
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{ 0xE0, 0xC0, 2 },
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{ 0xF0, 0xE0, 3 },
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{ 0xF8, 0xF0, 4 },
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{ 0xFC, 0xF8, 5 },
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{ 0xFE, 0xF8, 6 },
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{ 0x80, 0x80, -1 },
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};
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int utf8_size(const char *s) {
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uint8_t c = (uint8_t)*s;
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for (size_t i = 0; i < sizeof(sizes) / 2; ++i) {
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if ((c & sizes[i].mask) == sizes[i].result) {
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return sizes[i].octets;
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}
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}
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return -1;
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}
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@ -0,0 +1,33 @@
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#ifndef _SWAY_UNICODE_H
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#define _SWAY_UNICODE_H
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#include <stddef.h>
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#include <stdint.h>
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// Technically UTF-8 supports up to 6 byte codepoints, but Unicode itself
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// doesn't really bother with more than 4.
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#define UTF8_MAX_SIZE 4
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#define UTF8_INVALID 0x80
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/**
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* Grabs the next UTF-8 character and advances the string pointer
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*/
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uint32_t utf8_decode(const char **str);
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/**
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* Encodes a character as UTF-8 and returns the length of that character.
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*/
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size_t utf8_encode(char *str, uint32_t ch);
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/**
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* Returns the size of the next UTF-8 character
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*/
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int utf8_size(const char *str);
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/**
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* Returns the size of a UTF-8 character
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*/
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size_t utf8_chsize(uint32_t ch);
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#endif
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@ -0,0 +1,57 @@
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#include <assert.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <wlr/util/log.h>
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#include <xkbcommon/xkbcommon.h>
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#include "swaylock/swaylock.h"
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#include "swaylock/seat.h"
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#include "unicode.h"
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static void backspace(struct swaylock_password *pw) {
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if (pw->len != 0) {
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pw->buffer[--pw->len] = 0;
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}
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}
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static void append_ch(struct swaylock_password *pw, uint32_t codepoint) {
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if (!pw->buffer) {
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pw->size = 8;
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if (!(pw->buffer = malloc(pw->size))) {
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// TODO: Display error
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return;
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}
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pw->buffer[0] = 0;
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}
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size_t utf8_size = utf8_chsize(codepoint);
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if (pw->len + utf8_size + 1 >= pw->size) {
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size_t size = pw->size * 2;
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char *buffer = realloc(pw->buffer, size);
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if (!buffer) {
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// TODO: Display error
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return;
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}
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pw->size = size;
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pw->buffer = buffer;
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}
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utf8_encode(&pw->buffer[pw->len], codepoint);
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pw->buffer[pw->len + utf8_size] = 0;
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pw->len += utf8_size;
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}
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void swaylock_handle_key(struct swaylock_state *state,
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xkb_keysym_t keysym, uint32_t codepoint) {
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switch (keysym) {
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case XKB_KEY_KP_Enter: /* fallthrough */
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case XKB_KEY_Return:
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// TODO: Attempt password
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break;
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case XKB_KEY_BackSpace:
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backspace(&state->password);
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break;
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default:
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if (codepoint) {
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append_ch(&state->password, codepoint);
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}
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break;
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}
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}
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@ -0,0 +1,21 @@
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#include <wayland-client.h>
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#include "cairo.h"
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#include "background-image.h"
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#include "swaylock/swaylock.h"
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void render_frame(struct swaylock_surface *surface) {
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struct swaylock_state *state = surface->state;
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surface->current_buffer = get_next_buffer(state->shm,
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surface->buffers, surface->width, surface->height);
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cairo_t *cairo = surface->current_buffer->cairo;
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if (state->args.mode == BACKGROUND_MODE_SOLID_COLOR) {
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cairo_set_source_u32(cairo, state->args.color);
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cairo_paint(cairo);
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} else {
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render_background_image(cairo, surface->image,
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state->args.mode, surface->width, surface->height);
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}
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wl_surface_attach(surface->surface, surface->current_buffer->buffer, 0, 0);
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wl_surface_damage(surface->surface, 0, 0, surface->width, surface->height);
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wl_surface_commit(surface->surface);
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}
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