diff options
Diffstat (limited to 'capplets/common/theme-thumbnail.c')
| -rw-r--r-- | capplets/common/theme-thumbnail.c | 623 |
1 files changed, 0 insertions, 623 deletions
diff --git a/capplets/common/theme-thumbnail.c b/capplets/common/theme-thumbnail.c deleted file mode 100644 index aa94b9671..000000000 --- a/capplets/common/theme-thumbnail.c +++ /dev/null @@ -1,623 +0,0 @@ -#include <unistd.h> -#include <string.h> -#include <metacity-private/util.h> -#include <metacity-private/theme.h> -#include <metacity-private/theme-parser.h> -#include <metacity-private/preview-widget.h> -#include <signal.h> -#include <errno.h> - -/* We have to #undef this as metacity #defines these. */ -#undef _ -#undef N_ - -#include <libgnomeui/gnome-icon-theme.h> -#include <config.h> - -#include "theme-thumbnail.h" -#include "capplet-util.h" - -static gint child_pid; -#define ICON_SIZE_WIDTH 150 -#define ICON_SIZE_HEIGHT 150 - -typedef struct -{ - gboolean set; - GByteArray *data; - gchar *meta_theme_name; - ThemeThumbnailFunc func; - gpointer user_data; - GDestroyNotify destroy; - GIOChannel *channel; - guint watch_id; -} ThemeThumbnailAsyncData; - - -GHashTable *theme_hash = NULL; -ThemeThumbnailAsyncData async_data; - - -/* Protocol */ - -/* Our protocol is pretty simple. The parent process will write four strings - * (separated by a '\000') They are the widget theme, the wm theme, the icon - * theme, and the font string. Then, it will wait for the child to write back - * the data. The parent expects ICON_SIZE_WIDTH * ICON_SIZE_HEIGHT * 4 bytes of - * information. After that, the child is ready for the next theme to render. - */ - -enum -{ - READY_FOR_THEME, - READING_CONTROL_THEME_NAME, - READING_WM_THEME_NAME, - READING_ICON_THEME_NAME, - READING_APPLICATION_FONT, - WRITING_PIXBUF_DATA -}; - -typedef struct -{ - gint status; - GByteArray *control_theme_name; - GByteArray *wm_theme_name; - GByteArray *icon_theme_name; - GByteArray *application_font; -} ThemeThumbnailData; - -int pipe_to_factory_fd[2]; -int pipe_from_factory_fd[2]; - -static void -fake_expose_widget (GtkWidget *widget, - GdkPixmap *pixmap) -{ - GdkWindow *tmp_window; - GdkEventExpose event; - - event.type = GDK_EXPOSE; - event.window = pixmap; - event.send_event = FALSE; - event.area = widget->allocation; - event.region = NULL; - event.count = 0; - - tmp_window = widget->window; - widget->window = pixmap; - gtk_widget_send_expose (widget, (GdkEvent *) &event); - widget->window = tmp_window; -} - - - -static void -hbox_foreach (GtkWidget *widget, - gpointer data) -{ - gtk_widget_realize (widget); - gtk_widget_map (widget); - gtk_widget_ensure_style (widget); - fake_expose_widget (widget, (GdkPixmap *) data); -} - -static void -create_image (ThemeThumbnailData *theme_thumbnail_data, - GdkPixbuf *pixbuf) -{ - GtkWidget *window; - GtkWidget *preview; - GtkWidget *align; - GtkWidget *stock_button; - - GtkRequisition requisition; - GtkAllocation allocation; - GdkPixmap *pixmap; - GdkVisual *visual; - MetaFrameFlags flags; - MetaTheme *theme = NULL; - GtkSettings *settings; - GtkIconTheme *icon_theme; - GdkPixbuf *folder_icon; - GtkIconInfo *folder_icon_info; - const gchar *filename; - - settings = gtk_settings_get_default (); - g_object_set (G_OBJECT (settings), - "gtk-theme-name", (char *) theme_thumbnail_data->control_theme_name->data, - "gtk-font-name", (char *) theme_thumbnail_data->application_font->data, - NULL); - theme = meta_theme_load ((char *) theme_thumbnail_data->wm_theme_name->data, NULL); - - flags = META_FRAME_ALLOWS_DELETE | - META_FRAME_ALLOWS_MENU | - META_FRAME_ALLOWS_MINIMIZE | - META_FRAME_ALLOWS_MAXIMIZE | - META_FRAME_ALLOWS_VERTICAL_RESIZE | - META_FRAME_ALLOWS_HORIZONTAL_RESIZE | - META_FRAME_HAS_FOCUS | - META_FRAME_ALLOWS_SHADE | - META_FRAME_ALLOWS_MOVE; - - window = gtk_window_new (GTK_WINDOW_TOPLEVEL); - preview = meta_preview_new (); - gtk_container_add (GTK_CONTAINER (window), preview); - gtk_widget_realize (window); - gtk_widget_realize (preview); - align = gtk_alignment_new (0.0, 0.0, 0.0, 0.0); - gtk_container_add (GTK_CONTAINER (preview), align); - gtk_container_set_border_width (GTK_CONTAINER (align), 5); - stock_button = gtk_button_new_from_stock (GTK_STOCK_OPEN); - gtk_container_add (GTK_CONTAINER (align), stock_button); - - gtk_widget_show_all (preview); - gtk_widget_realize (align); - gtk_widget_realize (stock_button); - gtk_widget_realize (GTK_BIN (stock_button)->child); - gtk_widget_map (stock_button); - gtk_widget_map (GTK_BIN (stock_button)->child); - - meta_preview_set_frame_flags (META_PREVIEW (preview), flags); - meta_preview_set_theme (META_PREVIEW (preview), theme); - meta_preview_set_title (META_PREVIEW (preview), ""); - - - gtk_window_set_default_size (GTK_WINDOW (window), ICON_SIZE_WIDTH, ICON_SIZE_HEIGHT); - - gtk_widget_size_request (window, &requisition); - allocation.x = 0; - allocation.y = 0; - allocation.width = ICON_SIZE_WIDTH; - allocation.height = ICON_SIZE_HEIGHT; - gtk_widget_size_allocate (window, &allocation); - gtk_widget_size_request (window, &requisition); - - /* Create a pixmap */ - visual = gtk_widget_get_visual (window); - pixmap = gdk_pixmap_new (NULL, ICON_SIZE_WIDTH, ICON_SIZE_HEIGHT, visual->depth); - gdk_drawable_set_colormap (GDK_DRAWABLE (pixmap), gtk_widget_get_colormap (window)); - - /* Draw the window */ - gtk_widget_ensure_style (window); - g_assert (window->style); - g_assert (window->style->font_desc); - - fake_expose_widget (window, pixmap); - fake_expose_widget (preview, pixmap); - fake_expose_widget (stock_button, pixmap); - gtk_container_foreach (GTK_CONTAINER (GTK_BIN (GTK_BIN (stock_button)->child)->child), - hbox_foreach, - pixmap); - fake_expose_widget (GTK_BIN (stock_button)->child, pixmap); - - - gdk_pixbuf_get_from_drawable (pixbuf, pixmap, NULL, 0, 0, 0, 0, ICON_SIZE_WIDTH, ICON_SIZE_HEIGHT); - - /* Handle the icon theme */ - icon_theme = gtk_icon_theme_new (); - gtk_icon_theme_set_custom_theme (icon_theme, (char *) theme_thumbnail_data->icon_theme_name->data); - - /* Have to try both "folder" and "gnome-fs-directory" seems themes seem to use either name */ - folder_icon_info = gtk_icon_theme_lookup_icon (icon_theme, "folder", 48, GTK_ICON_LOOKUP_FORCE_SVG); - if (folder_icon_info == NULL) { - folder_icon_info = gtk_icon_theme_lookup_icon (icon_theme, "gnome-fs-directory", 48, GTK_ICON_LOOKUP_FORCE_SVG); - } - - g_object_unref (icon_theme); - - filename = gtk_icon_info_get_filename (folder_icon_info); - - if (filename != NULL) - { - folder_icon = gdk_pixbuf_new_from_file (filename, NULL); - } - else - { - folder_icon = NULL; - } - - gtk_icon_info_free (folder_icon_info); - - /* render the icon to the thumbnail */ - if (folder_icon) - { - gdk_pixbuf_composite (folder_icon, - pixbuf, - align->allocation.x + align->allocation.width - gdk_pixbuf_get_width (folder_icon) - 5, - align->allocation.y + align->allocation.height - gdk_pixbuf_get_height (folder_icon) - 5, - gdk_pixbuf_get_width (folder_icon), - gdk_pixbuf_get_height (folder_icon), - align->allocation.x + align->allocation.width - gdk_pixbuf_get_width (folder_icon) - 5, - align->allocation.y + align->allocation.height - gdk_pixbuf_get_height (folder_icon) - 5, - 1.0, 1.0, GDK_INTERP_BILINEAR, 255); - g_object_unref (folder_icon); - } -} - -static void -handle_bytes (const gchar *buffer, - gint bytes_read, - ThemeThumbnailData *theme_thumbnail_data) -{ - const gchar *ptr; - ptr = buffer; - - while (bytes_read > 0) - { - char *nil; - switch (theme_thumbnail_data->status) - { - case READY_FOR_THEME: - case READING_CONTROL_THEME_NAME: - theme_thumbnail_data->status = READING_CONTROL_THEME_NAME; - nil = memchr (ptr, '\000', bytes_read); - if (nil == NULL) - { - g_byte_array_append (theme_thumbnail_data->control_theme_name, ptr, bytes_read); - bytes_read = 0; - } - else - { - g_byte_array_append (theme_thumbnail_data->control_theme_name, ptr, nil - ptr + 1); - bytes_read -= (nil - ptr + 1); - ptr = nil + 1; - theme_thumbnail_data->status = READING_WM_THEME_NAME; - } - break; - case READING_WM_THEME_NAME: - nil = memchr (ptr, '\000', bytes_read); - if (nil == NULL) - { - g_byte_array_append (theme_thumbnail_data->wm_theme_name, ptr, bytes_read); - bytes_read = 0; - } - else - { - g_byte_array_append (theme_thumbnail_data->wm_theme_name, ptr, nil - ptr + 1); - bytes_read -= (nil - ptr + 1); - ptr = nil + 1; - theme_thumbnail_data->status = READING_ICON_THEME_NAME; - } - break; - case READING_ICON_THEME_NAME: - nil = memchr (ptr, '\000', bytes_read); - if (nil == NULL) - { - g_byte_array_append (theme_thumbnail_data->icon_theme_name, ptr, bytes_read); - bytes_read = 0; - } - else - { - g_byte_array_append (theme_thumbnail_data->icon_theme_name, ptr, nil - ptr + 1); - bytes_read -= (nil - ptr + 1); - ptr = nil + 1; - theme_thumbnail_data->status = READING_APPLICATION_FONT; - } - break; - case READING_APPLICATION_FONT: - nil = memchr (ptr, '\000', bytes_read); - if (nil == NULL) - { - g_byte_array_append (theme_thumbnail_data->application_font, ptr, bytes_read); - bytes_read = 0; - } - else - { - g_byte_array_append (theme_thumbnail_data->application_font, ptr, nil - ptr + 1); - bytes_read -= (nil - ptr + 1); - ptr = nil + 1; - theme_thumbnail_data->status = WRITING_PIXBUF_DATA; - } - break; - default: - g_assert_not_reached (); - } - } -} - -static gboolean -message_from_capplet (GIOChannel *source, - GIOCondition condition, - gpointer data) -{ - gchar buffer[1024]; - GIOStatus status; - gsize bytes_read; - GdkPixbuf *pixbuf; - gint i, rowstride; - char *pixels; - ThemeThumbnailData *theme_thumbnail_data; - - theme_thumbnail_data = (ThemeThumbnailData *)data; - - status = g_io_channel_read_chars (source, - buffer, - 1024, - &bytes_read, - NULL); - - switch (status) - { - case G_IO_STATUS_NORMAL: - handle_bytes (buffer, bytes_read, theme_thumbnail_data); - - if (theme_thumbnail_data->status == WRITING_PIXBUF_DATA) - { - pixbuf = gdk_pixbuf_new (GDK_COLORSPACE_RGB, TRUE, 8, ICON_SIZE_WIDTH, ICON_SIZE_HEIGHT); - create_image (theme_thumbnail_data, pixbuf); - rowstride = gdk_pixbuf_get_rowstride (pixbuf); - pixels = gdk_pixbuf_get_pixels (pixbuf); - for (i = 0; i < ICON_SIZE_HEIGHT; i ++) - { - write (pipe_from_factory_fd[1], pixels + (rowstride)*i, ICON_SIZE_WIDTH * gdk_pixbuf_get_n_channels (pixbuf)); - } - g_object_unref (pixbuf); - theme_thumbnail_data->status = READY_FOR_THEME; - g_byte_array_set_size (theme_thumbnail_data->control_theme_name, 0); - g_byte_array_set_size (theme_thumbnail_data->wm_theme_name, 0); - g_byte_array_set_size (theme_thumbnail_data->icon_theme_name, 0); - g_byte_array_set_size (theme_thumbnail_data->application_font, 0); - } - return TRUE; - case G_IO_STATUS_AGAIN: - return TRUE; - case G_IO_STATUS_EOF: - case G_IO_STATUS_ERROR: - _exit (0); - default: - g_assert_not_reached (); - } - - return TRUE; -} - -static gboolean -message_from_child (GIOChannel *source, - GIOCondition condition, - gpointer data) -{ - - gchar buffer[1024]; - GIOStatus status; - gsize bytes_read; - - if (async_data.set == FALSE) - return TRUE; - - status = g_io_channel_read_chars (source, - buffer, - 1024, - &bytes_read, - NULL); - switch (status) - { - case G_IO_STATUS_NORMAL: - g_byte_array_append (async_data.data, buffer, bytes_read); - if (async_data.data->len == ICON_SIZE_WIDTH * ICON_SIZE_HEIGHT * 4) - { - GdkPixbuf *pixbuf; - GdkPixbuf *scaled_pixbuf; - gchar *pixels; - gint i, rowstride; - - pixbuf = gdk_pixbuf_new (GDK_COLORSPACE_RGB, TRUE, 8, ICON_SIZE_WIDTH, ICON_SIZE_HEIGHT); - pixels = gdk_pixbuf_get_pixels (pixbuf); - rowstride = gdk_pixbuf_get_rowstride (pixbuf); - for (i = 0; i < ICON_SIZE_HEIGHT; i++) - memcpy (pixels + rowstride * i, async_data.data->data + 4 * ICON_SIZE_WIDTH * i, ICON_SIZE_WIDTH * 4); - - scaled_pixbuf = gdk_pixbuf_scale_simple (pixbuf, ICON_SIZE_WIDTH/2, ICON_SIZE_HEIGHT/2, GDK_INTERP_BILINEAR); - g_hash_table_insert (theme_hash, g_strdup(async_data.meta_theme_name), scaled_pixbuf); - g_object_unref (pixbuf); - - (* async_data.func) (scaled_pixbuf, async_data.user_data); - if (async_data.destroy) - (* async_data.destroy) (async_data.user_data); - - /* Clean up async_data */ - g_free (async_data.meta_theme_name); - g_source_remove (async_data.watch_id); - g_io_channel_unref (async_data.channel); - - /* reset async_data */ - async_data.meta_theme_name = NULL; - async_data.channel = NULL; - async_data.func = NULL; - async_data.user_data = NULL; - async_data.destroy = NULL; - async_data.set = FALSE; - g_byte_array_set_size (async_data.data, 0); - } - return TRUE; - case G_IO_STATUS_AGAIN: - return TRUE; - - case G_IO_STATUS_EOF: - case G_IO_STATUS_ERROR: - return TRUE; - default: - g_assert_not_reached (); - } - - return TRUE; -} - -void -theme_thumbnail_invalidate_cache (GnomeThemeMetaInfo *meta_theme_info) -{ - gboolean success; - - success = g_hash_table_remove (theme_hash, meta_theme_info->name); - printf ("Success is %d\n", success); -} - -GdkPixbuf * -generate_theme_thumbnail (GnomeThemeMetaInfo *meta_theme_info, - gboolean clear_cache) -{ - GdkPixbuf *retval = NULL; - GdkPixbuf *pixbuf = NULL; - gint i, rowstride; - char *pixels; - - g_return_val_if_fail (async_data.set == FALSE, NULL); - - pixbuf = g_hash_table_lookup (theme_hash, meta_theme_info->name); - if (pixbuf != NULL) - { - if (clear_cache) - g_hash_table_remove (theme_hash, meta_theme_info->name); - else - return pixbuf; - } - - if (!pipe_to_factory_fd[1] || !pipe_from_factory_fd[0]) - return NULL; - - pixbuf = gdk_pixbuf_new (GDK_COLORSPACE_RGB, TRUE, 8, ICON_SIZE_WIDTH, ICON_SIZE_HEIGHT); - write (pipe_to_factory_fd[1], meta_theme_info->gtk_theme_name, strlen (meta_theme_info->gtk_theme_name) + 1); - write (pipe_to_factory_fd[1], meta_theme_info->metacity_theme_name, strlen (meta_theme_info->metacity_theme_name) + 1); - write (pipe_to_factory_fd[1], meta_theme_info->icon_theme_name, strlen (meta_theme_info->icon_theme_name) + 1); - if (meta_theme_info->application_font == NULL) - write (pipe_to_factory_fd[1], "Sans 10", strlen ("Sans 10") + 1); - else - write (pipe_to_factory_fd[1], meta_theme_info->application_font, strlen (meta_theme_info->application_font) + 1); - - rowstride = gdk_pixbuf_get_rowstride (pixbuf); - pixels = gdk_pixbuf_get_pixels (pixbuf); - - for (i = 0; i < ICON_SIZE_HEIGHT; i++) - { - gint j = 0; - gint bytes_read; - - do - { - bytes_read = read (pipe_from_factory_fd[0], pixels + (rowstride)*i + j, ICON_SIZE_WIDTH * gdk_pixbuf_get_n_channels (pixbuf) - j); - if (bytes_read > 0) - j += bytes_read; - else if (bytes_read == 0) - { - g_warning ("Received EOF while reading thumbnail for gtk: '%s', metacity '%s', icon: '%s', font: '%s'\n", - meta_theme_info->gtk_theme_name, - meta_theme_info->metacity_theme_name, - meta_theme_info->icon_theme_name, - meta_theme_info->application_font ? meta_theme_info->application_font : "Sans 10"); - g_object_unref (pixbuf); - close (pipe_to_factory_fd[1]); - pipe_to_factory_fd[1] = 0; - close (pipe_from_factory_fd[0]); - pipe_from_factory_fd[0] = 0; - return NULL; - } - } - while (j < ICON_SIZE_WIDTH * gdk_pixbuf_get_n_channels (pixbuf)); - } - - retval = gdk_pixbuf_scale_simple (pixbuf, ICON_SIZE_WIDTH/2, ICON_SIZE_HEIGHT/2, GDK_INTERP_BILINEAR); - g_object_unref (pixbuf); - - g_hash_table_insert (theme_hash, g_strdup (meta_theme_info->name), retval); - return retval; -} - -void -generate_theme_thumbnail_async (GnomeThemeMetaInfo *meta_theme_info, - ThemeThumbnailFunc func, - gpointer user_data, - GDestroyNotify destroy) -{ - GdkPixbuf *pixbuf; - - g_return_if_fail (async_data.set == FALSE); - - pixbuf = g_hash_table_lookup (theme_hash, meta_theme_info->name); - if (pixbuf != NULL) - { - (* func) (pixbuf, user_data); - if (destroy) - (* destroy) (user_data); - return; - } - - if (!pipe_to_factory_fd[1] || !pipe_from_factory_fd[0]) - { - (* func) (NULL, user_data); - if (destroy) - (* destroy) (user_data); - return; - } - - if (async_data.channel == NULL) - { - async_data.channel = g_io_channel_unix_new (pipe_from_factory_fd[0]); - g_io_channel_set_flags (async_data.channel, g_io_channel_get_flags (async_data.channel) | - G_IO_FLAG_NONBLOCK, NULL); - g_io_channel_set_encoding (async_data.channel, NULL, NULL); - async_data.watch_id = g_io_add_watch (async_data.channel, G_IO_IN | G_IO_HUP, message_from_child, NULL); - } - - - async_data.set = TRUE; - async_data.meta_theme_name = g_strdup (meta_theme_info->name); - async_data.func = func; - async_data.user_data = user_data; - async_data.destroy = destroy; - - write (pipe_to_factory_fd[1], meta_theme_info->gtk_theme_name, strlen (meta_theme_info->gtk_theme_name) + 1); - write (pipe_to_factory_fd[1], meta_theme_info->metacity_theme_name, strlen (meta_theme_info->metacity_theme_name) + 1); - write (pipe_to_factory_fd[1], meta_theme_info->icon_theme_name, strlen (meta_theme_info->icon_theme_name) + 1); - if (meta_theme_info->application_font == NULL) - write (pipe_to_factory_fd[1], "Sans 10", strlen ("Sans 10") + 1); - else - write (pipe_to_factory_fd[1], meta_theme_info->application_font, strlen (meta_theme_info->application_font) + 1); -} - -void -theme_thumbnail_factory_init (int argc, char *argv[]) -{ - pipe (pipe_to_factory_fd); - pipe (pipe_from_factory_fd); - - child_pid = fork (); - if (child_pid == 0) - { - ThemeThumbnailData data; - GIOChannel *channel; - - /* Child */ - gtk_init (&argc, &argv); - - close (pipe_to_factory_fd[1]); - pipe_to_factory_fd[1] = 0; - close (pipe_from_factory_fd[0]); - pipe_from_factory_fd[0] = 0; - - data.status = READY_FOR_THEME; - data.control_theme_name = g_byte_array_new (); - data.wm_theme_name = g_byte_array_new (); - data.icon_theme_name = g_byte_array_new (); - data.application_font = g_byte_array_new (); - - channel = g_io_channel_unix_new (pipe_to_factory_fd[0]); - g_io_channel_set_flags (channel, g_io_channel_get_flags (channel) | - G_IO_FLAG_NONBLOCK, NULL); - g_io_channel_set_encoding (channel, NULL, NULL); - g_io_add_watch (channel, G_IO_IN | G_IO_HUP, message_from_capplet, &data); - g_io_channel_unref (channel); - - gtk_main (); - _exit (0); - } - - g_assert (child_pid > 0); - - /* Parent */ - close (pipe_to_factory_fd[0]); - close (pipe_from_factory_fd[1]); - async_data.set = FALSE; - async_data.meta_theme_name = NULL; - async_data.data = g_byte_array_new (); - - theme_hash = g_hash_table_new_full (g_str_hash, g_str_equal, g_free, g_object_unref); -} |