mirror of
https://github.com/davatorium/rofi.git
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343 lines
11 KiB
C
343 lines
11 KiB
C
/*
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* rofi
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*
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* MIT/X11 License
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* Copyright © 2013-2020 Qball Cow <qball@gmpclient.org>
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sublicense, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
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* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*
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*/
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/** The log domain of this Helper. */
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#define G_LOG_DOMAIN "Helpers.IconFetcher"
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#include "rofi-icon-fetcher.h"
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#include "rofi-types.h"
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#include "helper.h"
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#include "settings.h"
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#include "xcb.h"
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#include "keyb.h"
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#include "view.h"
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#include "nkutils-xdg-theme.h"
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#include <stdint.h>
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#include <jpeglib.h>
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#include <setjmp.h>
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typedef struct
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{
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// Context for icon-themes.
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NkXdgThemeContext *xdg_context;
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// On name.
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GHashTable *icon_cache;
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// On uid.
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GHashTable *icon_cache_uid;
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uint32_t last_uid;
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} IconFetcher;
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typedef struct
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{
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char *name;
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GList *sizes;
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} IconFetcherNameEntry;
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typedef struct
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{
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thread_state state;
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GCond *cond;
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GMutex *mutex;
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unsigned int *acount;
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uint32_t uid;
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int size;
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cairo_surface_t *surface;
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IconFetcherNameEntry *entry;
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} IconFetcherEntry;
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/**
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* The icon fetcher internal state.
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*/
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IconFetcher *rofi_icon_fetcher_data = NULL;
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static void rofi_icon_fetch_entry_free ( gpointer data )
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{
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IconFetcherNameEntry *entry = (IconFetcherNameEntry *) data;
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// Free name/key.
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g_free ( entry->name );
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for ( GList *iter = g_list_first ( entry->sizes ); iter; iter = g_list_next ( iter ) ) {
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IconFetcherEntry *sentry = (IconFetcherEntry *) ( iter->data );
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cairo_surface_destroy ( sentry->surface );
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g_free ( sentry );
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}
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g_list_free ( entry->sizes );
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g_free ( entry );
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}
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void rofi_icon_fetcher_init ( void )
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{
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g_assert ( rofi_icon_fetcher_data == NULL );
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static const gchar * const icon_fallback_themes[] = {
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"Adwaita",
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"gnome",
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NULL
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};
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const char *themes[2] = { config.icon_theme, NULL };
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rofi_icon_fetcher_data = g_malloc0 ( sizeof ( IconFetcher ) );
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rofi_icon_fetcher_data->xdg_context = nk_xdg_theme_context_new ( icon_fallback_themes, NULL );
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nk_xdg_theme_preload_themes_icon ( rofi_icon_fetcher_data->xdg_context, themes );
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rofi_icon_fetcher_data->icon_cache_uid = g_hash_table_new ( g_direct_hash, g_direct_equal );
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rofi_icon_fetcher_data->icon_cache = g_hash_table_new_full ( g_str_hash, g_str_equal, NULL, rofi_icon_fetch_entry_free );
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}
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void rofi_icon_fetcher_destroy ( void )
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{
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if ( rofi_icon_fetcher_data == NULL ) {
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return;
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}
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nk_xdg_theme_context_free ( rofi_icon_fetcher_data->xdg_context );
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g_hash_table_unref ( rofi_icon_fetcher_data->icon_cache_uid );
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g_hash_table_unref ( rofi_icon_fetcher_data->icon_cache );
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g_free ( rofi_icon_fetcher_data );
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}
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static cairo_surface_t* cairo_image_surface_create_from_jpeg_private ( struct jpeg_decompress_struct* cinfo )
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{
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cairo_surface_t* surface = 0;
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unsigned char * data = 0;
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unsigned char * rgb = 0;
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jpeg_read_header ( cinfo, TRUE );
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jpeg_start_decompress ( cinfo );
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surface = cairo_image_surface_create ( CAIRO_FORMAT_RGB24, cinfo->image_width, cinfo->image_height );
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data = cairo_image_surface_get_data ( surface );
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rgb = (unsigned char *) ( malloc ( cinfo->output_width * cinfo->output_components ) );
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while ( cinfo->output_scanline < cinfo->output_height ) {
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unsigned int i;
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int scanline = cinfo->output_scanline * cairo_image_surface_get_stride ( surface );
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jpeg_read_scanlines ( cinfo, &rgb, 1 );
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for ( i = 0; i < cinfo->output_width; i++ ) {
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int offset = scanline + ( i * 4 );
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data[offset + 3] = 255;
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data[offset + 2] = rgb[( i * 3 )];
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data[offset + 1] = rgb[( i * 3 ) + 1];
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data[offset ] = rgb[( i * 3 ) + 2];
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}
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}
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free ( rgb );
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jpeg_finish_decompress ( cinfo );
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jpeg_destroy_decompress ( cinfo );
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cairo_surface_mark_dirty ( surface );
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return surface;
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}
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struct jpegErrorManager {
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/* "public" fields */
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struct jpeg_error_mgr pub;
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/* for return to caller */
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jmp_buf setjmp_buffer;
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};
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char jpegLastErrorMsg[JMSG_LENGTH_MAX];
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static void jpegErrorExit (j_common_ptr cinfo)
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{
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/* cinfo->err actually points to a jpegErrorManager struct */
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struct jpegErrorManager* myerr = (struct jpegErrorManager*) cinfo->err;
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/* Create the message */
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( *(cinfo->err->format_message) ) (cinfo, jpegLastErrorMsg);
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g_warning ( jpegLastErrorMsg );
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/* Jump to the setjmp point */
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longjmp(myerr->setjmp_buffer, 1);
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}
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static cairo_surface_t* cairo_image_surface_create_from_jpeg ( const char* file )
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{
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struct jpeg_decompress_struct cinfo;
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cairo_surface_t * surface;
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FILE * infile;
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if ( ( infile = fopen ( file, "rb" ) ) == NULL ) {
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return NULL;
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}
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struct jpegErrorManager jerr;
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cinfo.err = jpeg_std_error( &jerr.pub);
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jerr.pub.error_exit = jpegErrorExit;
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/* Establish the setjmp return context for my_error_exit to use. */
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if (setjmp(jerr.setjmp_buffer)) {
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/* If we get here, the JPEG code has signaled an error. */
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jpeg_destroy_decompress(&cinfo);
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fclose(infile);
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return NULL;
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}
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jpeg_create_decompress ( &cinfo );
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jpeg_stdio_src ( &cinfo, infile );
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surface = cairo_image_surface_create_from_jpeg_private ( &cinfo );
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fclose ( infile );
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return surface;
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}
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static void rofi_icon_fetcher_worker ( thread_state *sdata, G_GNUC_UNUSED gpointer user_data )
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{
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g_debug ( "starting up icon fetching thread." );
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// as long as dr->icon is updated atomicly.. (is a pointer write atomic?)
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// this should be fine running in another thread.
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IconFetcherEntry *sentry = (IconFetcherEntry *) sdata;
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const gchar *themes[] = {
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config.icon_theme,
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NULL
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};
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const gchar *icon_path;
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gchar *icon_path_ = NULL;
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if ( g_path_is_absolute ( sentry->entry->name ) ) {
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icon_path = sentry->entry->name;
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}
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else {
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icon_path = icon_path_ = nk_xdg_theme_get_icon ( rofi_icon_fetcher_data->xdg_context, themes, NULL, sentry->entry->name, sentry->size, 1, TRUE );
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if ( icon_path_ == NULL ) {
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g_debug ( "failed to get icon %s(%d): n/a", sentry->entry->name, sentry->size );
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return;
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}
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else{
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g_debug ( "found icon %s(%d): %s", sentry->entry->name, sentry->size, icon_path );
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}
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}
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cairo_surface_t *icon_surf = NULL;
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if ( g_str_has_suffix ( icon_path, ".png" ) ) {
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icon_surf = cairo_image_surface_create_from_png ( icon_path );
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}
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else if ( g_str_has_suffix ( icon_path, ".jpeg" ) || g_str_has_suffix ( icon_path, ".jpg" ) ) {
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icon_surf = cairo_image_surface_create_from_jpeg ( icon_path );
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}
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else if ( g_str_has_suffix ( icon_path, ".svg" ) ) {
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icon_surf = cairo_image_surface_create_from_svg ( icon_path, sentry->size );
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}
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else {
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g_debug ( "icon type not yet supported: %s", icon_path );
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}
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if ( icon_surf ) {
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if ( cairo_surface_status ( icon_surf ) == CAIRO_STATUS_SUCCESS ) {
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float sw = sentry->size / (float) cairo_image_surface_get_width ( icon_surf );
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float sh = sentry->size / (float) cairo_image_surface_get_height ( icon_surf );
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float scale = ( sw > sh ) ? sh : sw;
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if ( scale < 0.5 ) {
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cairo_surface_t * surface = cairo_image_surface_create (
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cairo_image_surface_get_format ( icon_surf ),
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cairo_image_surface_get_width ( icon_surf ) * scale,
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cairo_image_surface_get_height ( icon_surf ) * scale );
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cairo_t *d = cairo_create ( surface );
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cairo_scale ( d, scale, scale );
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cairo_set_source_surface ( d, icon_surf, 0.0, 0.0 );
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cairo_pattern_set_filter ( cairo_get_source ( d ), CAIRO_FILTER_FAST );
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cairo_paint ( d );
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cairo_destroy ( d );
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cairo_surface_destroy ( icon_surf );
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icon_surf = surface;
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}
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}
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// check if surface is valid.
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if ( cairo_surface_status ( icon_surf ) != CAIRO_STATUS_SUCCESS ) {
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g_debug ( "icon failed to open: %s(%d): %s", sentry->entry->name, sentry->size, icon_path );
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cairo_surface_destroy ( icon_surf );
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icon_surf = NULL;
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}
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sentry->surface = icon_surf;
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}
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g_free ( icon_path_ );
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rofi_view_reload ();
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}
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uint32_t rofi_icon_fetcher_query ( const char *name, const int size )
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{
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g_debug ( "Query: %s(%d)", name, size );
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IconFetcherNameEntry *entry = g_hash_table_lookup ( rofi_icon_fetcher_data->icon_cache, name );
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if ( entry == NULL ) {
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entry = g_new0 ( IconFetcherNameEntry, 1 );
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entry->name = g_strdup ( name );
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g_hash_table_insert ( rofi_icon_fetcher_data->icon_cache, entry->name, entry );
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}
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IconFetcherEntry *sentry;
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for ( GList *iter = g_list_first ( entry->sizes ); iter; iter = g_list_next ( iter ) ) {
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sentry = iter->data;
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if ( sentry->size == size ) {
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return sentry->uid;
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}
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}
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// Not found.
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sentry = g_new0 ( IconFetcherEntry, 1 );
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sentry->uid = ++( rofi_icon_fetcher_data->last_uid );
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sentry->size = size;
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sentry->entry = entry;
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sentry->surface = NULL;
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entry->sizes = g_list_prepend ( entry->sizes, sentry );
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g_hash_table_insert ( rofi_icon_fetcher_data->icon_cache_uid, GINT_TO_POINTER ( sentry->uid ), sentry );
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// Push into fetching queue.
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sentry->state.callback = rofi_icon_fetcher_worker;
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g_thread_pool_push ( tpool, sentry, NULL );
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return sentry->uid;
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}
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cairo_surface_t * rofi_icon_fetcher_get ( const uint32_t uid )
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{
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IconFetcherEntry *sentry = g_hash_table_lookup ( rofi_icon_fetcher_data->icon_cache_uid, GINT_TO_POINTER ( uid ) );
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if ( sentry ) {
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return sentry->surface;
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}
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return NULL;
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}
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