rofi/source/rofi-icon-fetcher.c

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/*
* rofi
*
* MIT/X11 License
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* Copyright © 2013-2022 Qball Cow <qball@gmpclient.org>
*
* 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 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.
*
*/
/** The log domain of this Helper. */
#define G_LOG_DOMAIN "Helpers.IconFetcher"
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#include "config.h"
#include <stdlib.h>
#include <xcb/xproto.h>
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#include "helper.h"
#include "rofi-icon-fetcher.h"
#include "rofi-types.h"
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#include "settings.h"
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#include <cairo.h>
#include <pango/pangocairo.h>
#include "keyb.h"
#include "view.h"
#include "xcb.h"
#include "nkutils-enum.h"
#include "nkutils-xdg-theme.h"
#include <stdint.h>
#include "helper.h"
#include <gdk-pixbuf/gdk-pixbuf.h>
typedef struct {
// Context for icon-themes.
NkXdgThemeContext *xdg_context;
// On name.
GHashTable *icon_cache;
// On uid.
GHashTable *icon_cache_uid;
// list extensions
GList *supported_extensions;
uint32_t last_uid;
} IconFetcher;
typedef struct {
char *name;
GList *sizes;
} IconFetcherNameEntry;
typedef struct {
thread_state state;
GCond *cond;
GMutex *mutex;
unsigned int *acount;
uint32_t uid;
int wsize;
int hsize;
cairo_surface_t *surface;
IconFetcherNameEntry *entry;
} IconFetcherEntry;
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/**
* The icon fetcher internal state.
*/
IconFetcher *rofi_icon_fetcher_data = NULL;
static void rofi_icon_fetch_entry_free(gpointer data) {
IconFetcherNameEntry *entry = (IconFetcherNameEntry *)data;
// Free name/key.
g_free(entry->name);
for (GList *iter = g_list_first(entry->sizes); iter;
iter = g_list_next(iter)) {
IconFetcherEntry *sentry = (IconFetcherEntry *)(iter->data);
cairo_surface_destroy(sentry->surface);
g_free(sentry);
}
g_list_free(entry->sizes);
g_free(entry);
}
void rofi_icon_fetcher_init(void) {
g_assert(rofi_icon_fetcher_data == NULL);
static const gchar *const icon_fallback_themes[] = {"Adwaita", "gnome", NULL};
const char *themes[2] = {config.icon_theme, NULL};
rofi_icon_fetcher_data = g_malloc0(sizeof(IconFetcher));
rofi_icon_fetcher_data->xdg_context =
nk_xdg_theme_context_new(icon_fallback_themes, NULL);
nk_xdg_theme_preload_themes_icon(rofi_icon_fetcher_data->xdg_context, themes);
rofi_icon_fetcher_data->icon_cache_uid =
g_hash_table_new(g_direct_hash, g_direct_equal);
rofi_icon_fetcher_data->icon_cache = g_hash_table_new_full(
g_str_hash, g_str_equal, NULL, rofi_icon_fetch_entry_free);
GSList *l = gdk_pixbuf_get_formats();
for (GSList *li = l; li != NULL; li = g_slist_next(li)) {
gchar **exts =
gdk_pixbuf_format_get_extensions((GdkPixbufFormat *)li->data);
for (unsigned int i = 0; exts && exts[i]; i++) {
rofi_icon_fetcher_data->supported_extensions =
g_list_append(rofi_icon_fetcher_data->supported_extensions, exts[i]);
g_info("Add image extension: %s", exts[i]);
exts[i] = NULL;
}
g_free(exts);
}
g_slist_free(l);
}
static void free_wrapper(gpointer data, G_GNUC_UNUSED gpointer user_data) {
g_free(data);
}
void rofi_icon_fetcher_destroy(void) {
if (rofi_icon_fetcher_data == NULL) {
return;
}
nk_xdg_theme_context_free(rofi_icon_fetcher_data->xdg_context);
g_hash_table_unref(rofi_icon_fetcher_data->icon_cache_uid);
g_hash_table_unref(rofi_icon_fetcher_data->icon_cache);
g_list_foreach(rofi_icon_fetcher_data->supported_extensions, free_wrapper,
NULL);
g_list_free(rofi_icon_fetcher_data->supported_extensions);
g_free(rofi_icon_fetcher_data);
}
/*
* _rofi_icon_fetcher_get_icon_surface and alpha_mult
* are inspired by gdk_cairo_set_source_pixbuf
* GDK is:
* Copyright (C) 2011-2018 Red Hat, Inc.
*/
#if G_BYTE_ORDER == G_LITTLE_ENDIAN
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/** Location of red byte */
#define RED_BYTE 2
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/** Location of green byte */
#define GREEN_BYTE 1
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/** Location of blue byte */
#define BLUE_BYTE 0
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/** Location of alpha byte */
#define ALPHA_BYTE 3
#else
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/** Location of red byte */
#define RED_BYTE 1
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/** Location of green byte */
#define GREEN_BYTE 2
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/** Location of blue byte */
#define BLUE_BYTE 3
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/** Location of alpha byte */
#define ALPHA_BYTE 0
#endif
static inline guchar alpha_mult(guchar c, guchar a) {
guint16 t;
switch (a) {
case 0xff:
return c;
case 0x00:
return 0x00;
default:
t = c * a + 0x7f;
return ((t >> 8) + t) >> 8;
}
}
static cairo_surface_t *
rofi_icon_fetcher_get_surface_from_pixbuf(GdkPixbuf *pixbuf) {
gint width, height;
const guchar *pixels;
gint stride;
gboolean alpha;
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if (pixbuf == NULL) {
return NULL;
}
width = gdk_pixbuf_get_width(pixbuf);
height = gdk_pixbuf_get_height(pixbuf);
pixels = gdk_pixbuf_read_pixels(pixbuf);
stride = gdk_pixbuf_get_rowstride(pixbuf);
alpha = gdk_pixbuf_get_has_alpha(pixbuf);
cairo_surface_t *surface = NULL;
gint cstride;
guint lo, o;
guchar a = 0xff;
const guchar *pixels_end, *line;
guchar *cpixels;
pixels_end = pixels + height * stride;
o = alpha ? 4 : 3;
lo = o * width;
surface = cairo_image_surface_create(CAIRO_FORMAT_ARGB32, width, height);
cpixels = cairo_image_surface_get_data(surface);
cstride = cairo_image_surface_get_stride(surface);
cairo_surface_flush(surface);
while (pixels < pixels_end) {
line = pixels;
const guchar *line_end = line + lo;
guchar *cline = cpixels;
while (line < line_end) {
if (alpha) {
a = line[3];
}
cline[RED_BYTE] = alpha_mult(line[0], a);
cline[GREEN_BYTE] = alpha_mult(line[1], a);
cline[BLUE_BYTE] = alpha_mult(line[2], a);
cline[ALPHA_BYTE] = a;
line += o;
cline += 4;
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}
pixels += stride;
cpixels += cstride;
}
cairo_surface_mark_dirty(surface);
cairo_surface_flush(surface);
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return surface;
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}
gboolean rofi_icon_fetcher_file_is_image(const char *const path) {
if (path == NULL) {
return FALSE;
}
const char *suf = strrchr(path, '.');
if (suf == NULL) {
return FALSE;
}
suf++;
for (GList *iter = rofi_icon_fetcher_data->supported_extensions; iter != NULL;
iter = g_list_next(iter)) {
if (g_ascii_strcasecmp(iter->data, suf) == 0) {
return TRUE;
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}
}
return FALSE;
}
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static void rofi_icon_fetcher_worker(thread_state *sdata,
G_GNUC_UNUSED gpointer user_data) {
g_debug("starting up icon fetching thread.");
// as long as dr->icon is updated atomicly.. (is a pointer write atomic?)
// this should be fine running in another thread.
IconFetcherEntry *sentry = (IconFetcherEntry *)sdata;
const gchar *themes[] = {config.icon_theme, NULL};
const gchar *icon_path;
gchar *icon_path_ = NULL;
if (g_path_is_absolute(sentry->entry->name)) {
icon_path = sentry->entry->name;
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} else if (g_str_has_prefix(sentry->entry->name, "font:")) {
cairo_surface_t *surface = cairo_image_surface_create(
CAIRO_FORMAT_ARGB32, sentry->wsize, sentry->hsize);
cairo_t *cr = cairo_create(surface);
PangoLayout *layout = pango_cairo_create_layout(cr);
pango_layout_set_text(layout, &sentry->entry->name[5], -1);
int width, height;
pango_layout_get_size(layout, &width, &height);
double ws = sentry->wsize / ((double)width / PANGO_SCALE);
double wh = sentry->hsize / ((double)height / PANGO_SCALE);
double scale = MIN(ws, wh);
cairo_move_to(
cr, (sentry->wsize - ((double)width / PANGO_SCALE) * scale) / 2.0,
(sentry->hsize - ((double)height / PANGO_SCALE) * scale) / 2.0);
cairo_scale(cr, scale, scale);
pango_cairo_update_layout(cr, layout);
pango_layout_get_size(layout, &width, &height);
pango_cairo_show_layout(cr, layout);
g_object_unref(layout);
cairo_destroy(cr);
sentry->surface = surface;
rofi_view_reload();
return;
} else {
icon_path = icon_path_ = nk_xdg_theme_get_icon(
rofi_icon_fetcher_data->xdg_context, themes, NULL, sentry->entry->name,
MIN(sentry->wsize, sentry->hsize), 1, TRUE);
if (icon_path_ == NULL) {
g_debug("failed to get icon %s(%dx%d): n/a", sentry->entry->name,
sentry->wsize, sentry->hsize);
const char *ext = g_strrstr(sentry->entry->name, ".");
if (ext) {
icon_path = helper_get_theme_path(sentry->entry->name, ext);
}
if (icon_path == NULL) {
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return;
}
} else {
g_debug("found icon %s(%dx%d): %s", sentry->entry->name, sentry->wsize,
sentry->hsize, icon_path);
}
}
cairo_surface_t *icon_surf = NULL;
const char *suf = strrchr(icon_path, '.');
if (suf == NULL) {
return;
}
GError *error = NULL;
GdkPixbuf *pb = gdk_pixbuf_new_from_file_at_scale(
icon_path, sentry->wsize, sentry->hsize, TRUE, &error);
if (error != NULL) {
g_warning("Failed to load image: %s", error->message);
g_error_free(error);
if (pb) {
g_object_unref(pb);
}
} else {
icon_surf = rofi_icon_fetcher_get_surface_from_pixbuf(pb);
g_object_unref(pb);
}
sentry->surface = icon_surf;
g_free(icon_path_);
rofi_view_reload();
}
uint32_t rofi_icon_fetcher_query_advanced(const char *name, const int wsize,
const int hsize) {
g_debug("Query: %s(%dx%d)", name, wsize, hsize);
IconFetcherNameEntry *entry =
g_hash_table_lookup(rofi_icon_fetcher_data->icon_cache, name);
if (entry == NULL) {
entry = g_new0(IconFetcherNameEntry, 1);
entry->name = g_strdup(name);
g_hash_table_insert(rofi_icon_fetcher_data->icon_cache, entry->name, entry);
}
IconFetcherEntry *sentry;
for (GList *iter = g_list_first(entry->sizes); iter;
iter = g_list_next(iter)) {
sentry = iter->data;
if (sentry->wsize == wsize && sentry->hsize == hsize) {
return sentry->uid;
}
}
// Not found.
sentry = g_new0(IconFetcherEntry, 1);
sentry->uid = ++(rofi_icon_fetcher_data->last_uid);
sentry->wsize = wsize;
sentry->hsize = hsize;
sentry->entry = entry;
sentry->surface = NULL;
entry->sizes = g_list_prepend(entry->sizes, sentry);
g_hash_table_insert(rofi_icon_fetcher_data->icon_cache_uid,
GINT_TO_POINTER(sentry->uid), sentry);
// Push into fetching queue.
sentry->state.callback = rofi_icon_fetcher_worker;
g_thread_pool_push(tpool, sentry, NULL);
return sentry->uid;
}
uint32_t rofi_icon_fetcher_query(const char *name, const int size) {
g_debug("Query: %s(%d)", name, size);
IconFetcherNameEntry *entry =
g_hash_table_lookup(rofi_icon_fetcher_data->icon_cache, name);
if (entry == NULL) {
entry = g_new0(IconFetcherNameEntry, 1);
entry->name = g_strdup(name);
g_hash_table_insert(rofi_icon_fetcher_data->icon_cache, entry->name, entry);
}
IconFetcherEntry *sentry;
for (GList *iter = g_list_first(entry->sizes); iter;
iter = g_list_next(iter)) {
sentry = iter->data;
if (sentry->wsize == size && sentry->hsize == size) {
return sentry->uid;
}
}
// Not found.
sentry = g_new0(IconFetcherEntry, 1);
sentry->uid = ++(rofi_icon_fetcher_data->last_uid);
sentry->wsize = size;
sentry->hsize = size;
sentry->entry = entry;
sentry->surface = NULL;
entry->sizes = g_list_prepend(entry->sizes, sentry);
g_hash_table_insert(rofi_icon_fetcher_data->icon_cache_uid,
GINT_TO_POINTER(sentry->uid), sentry);
// Push into fetching queue.
sentry->state.callback = rofi_icon_fetcher_worker;
g_thread_pool_push(tpool, sentry, NULL);
return sentry->uid;
}
cairo_surface_t *rofi_icon_fetcher_get(const uint32_t uid) {
IconFetcherEntry *sentry = g_hash_table_lookup(
rofi_icon_fetcher_data->icon_cache_uid, GINT_TO_POINTER(uid));
if (sentry) {
return sentry->surface;
}
return NULL;
}