diff options
Diffstat (limited to 'plug-ins/print/print-settings.c')
| -rw-r--r-- | plug-ins/print/print-settings.c | 320 |
1 files changed, 320 insertions, 0 deletions
diff --git a/plug-ins/print/print-settings.c b/plug-ins/print/print-settings.c new file mode 100644 index 0000000..617282f --- /dev/null +++ b/plug-ins/print/print-settings.c @@ -0,0 +1,320 @@ +/* GIMP - The GNU Image Manipulation Program + * Copyright (C) 1995 Spencer Kimball and Peter Mattis + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 3 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see <https://www.gnu.org/licenses/>. + */ + +#include "config.h" + +#include <libgimp/gimp.h> +#include <libgimp/gimpui.h> + +#include "print.h" +#include "print-settings.h" +#include "print-utils.h" + + +#define PRINT_SETTINGS_MAJOR_VERSION 0 +#define PRINT_SETTINGS_MINOR_VERSION 4 + +#define PRINT_SETTINGS_NAME "print-settings" + + +static GKeyFile * print_settings_key_file_from_settings (PrintData *data); + +static void print_settings_add_to_key_file (const gchar *key, + const gchar *value, + gpointer data); + +static GKeyFile * print_settings_key_file_from_resource_file (void); + +static GKeyFile * print_settings_key_file_from_parasite (gint32 image_ID); + +static gboolean print_settings_load_from_key_file (PrintData *data, + GKeyFile *key_file); + +static gboolean print_settings_check_version (GKeyFile *key_file); + +/* + * set GtkPrintSettings from the contents of a "print-settings" + * image parasite, or, if none exists, from a resource + * file of the same name + */ +gboolean +print_settings_load (PrintData *data) +{ + GKeyFile *key_file = print_settings_key_file_from_parasite (data->image_id); + + if (! key_file) + key_file = print_settings_key_file_from_resource_file (); + + if (key_file) + { + print_settings_load_from_key_file (data, key_file); + g_key_file_free (key_file); + return TRUE; + } + + return FALSE; +} + +/* + * save all settings as a resource file "print-settings" + * and as an image parasite + */ +void +print_settings_save (PrintData *data) +{ + GKeyFile *key_file = print_settings_key_file_from_settings (data); + + /* image setup */ + if (gimp_image_is_valid (data->image_id)) + { + gdouble xres; + gdouble yres; + + gimp_image_get_resolution (data->image_id, &xres, &yres); + + g_key_file_set_integer (key_file, "image-setup", + "unit", data->unit); + /* Do not save the print resolution when it is the expected image + * resolution so that changing it (i.e. in "print size" dialog) + * is not overridden by any previous prints. + */ + if ((data->min_xres <= xres && ABS (xres - data->xres) > 0.1) || + (data->min_yres <= yres && ABS (yres - data->yres) > 0.1) || + (data->min_xres > xres && ABS (data->min_xres - data->xres) > 0.1) || + (data->min_yres > yres && ABS (data->min_yres - data->yres) > 0.1)) + { + g_key_file_set_double (key_file, "image-setup", + "x-resolution", data->xres); + g_key_file_set_double (key_file, "image-setup", + "y-resolution", data->yres); + } + g_key_file_set_double (key_file, "image-setup", + "x-offset", data->offset_x); + g_key_file_set_double (key_file, "image-setup", + "y-offset", data->offset_y); + g_key_file_set_integer (key_file, "image-setup", + "center-mode", data->center); + g_key_file_set_boolean (key_file, "image-setup", + "use-full-page", data->use_full_page); + g_key_file_set_boolean (key_file, "image-setup", + "crop-marks", data->draw_crop_marks); + + print_utils_key_file_save_as_parasite (key_file, + data->image_id, + PRINT_SETTINGS_NAME); + } + + /* some settings shouldn't be made persistent on a global level, + * so they are only stored in the image, not in the rcfile + */ + + g_key_file_remove_key (key_file, "image-setup", "x-resolution", NULL); + g_key_file_remove_key (key_file, "image-setup", "y-resolution", NULL); + g_key_file_remove_key (key_file, "image-setup", "x-offset", NULL); + g_key_file_remove_key (key_file, "image-setup", "y-offset", NULL); + + g_key_file_remove_key (key_file, PRINT_SETTINGS_NAME, "n-copies", NULL); + + print_utils_key_file_save_as_rcfile (key_file, PRINT_SETTINGS_NAME); + + g_key_file_free (key_file); +} + +/* + * serialize print settings into a GKeyFile + */ +static GKeyFile * +print_settings_key_file_from_settings (PrintData *data) +{ + GtkPrintOperation *operation = data->operation; + GtkPrintSettings *settings; + GKeyFile *key_file = g_key_file_new (); + + /* put version information into the file */ + g_key_file_set_integer (key_file, "meta", "major-version", + PRINT_SETTINGS_MAJOR_VERSION); + g_key_file_set_integer (key_file, "meta", "minor-version", + PRINT_SETTINGS_MINOR_VERSION); + + /* save the contents of the GtkPrintSettings for the operation */ + settings = gtk_print_operation_get_print_settings (operation); + + if (settings) + gtk_print_settings_foreach (settings, + print_settings_add_to_key_file, key_file); + + return key_file; +} + +/* + * callback used in gtk_print_settings_foreach loop + */ +static void +print_settings_add_to_key_file (const gchar *key, + const gchar *value, + gpointer data) +{ + GKeyFile *key_file = data; + + g_key_file_set_value (key_file, PRINT_SETTINGS_NAME, key, value); +} + +/* + * deserialize a "print-settings" resource file into a GKeyFile + */ +static GKeyFile * +print_settings_key_file_from_resource_file (void) +{ + GKeyFile *key_file; + + key_file = print_utils_key_file_load_from_rcfile (PRINT_SETTINGS_NAME); + + if (key_file && ! print_settings_check_version (key_file)) + { + g_key_file_free (key_file); + return NULL; + } + + return key_file; +} + +/* load information from an image parasite called "print-settings" + * return a GKeyFile containing the information if a valid parasite is found, + * NULL otherwise + */ +static GKeyFile * +print_settings_key_file_from_parasite (gint32 image_ID) +{ + GKeyFile *key_file; + + key_file = print_utils_key_file_load_from_parasite (image_ID, + PRINT_SETTINGS_NAME); + + if (key_file && ! print_settings_check_version (key_file)) + { + g_key_file_free (key_file); + return NULL; + } + + return key_file; +} + +static gboolean +print_settings_load_from_key_file (PrintData *data, + GKeyFile *key_file) +{ + GtkPrintOperation *operation = data->operation; + GtkPrintSettings *settings; + gchar **keys; + gsize n_keys; + gint i; + + settings = gtk_print_operation_get_print_settings (operation); + if (! settings) + settings = gtk_print_settings_new (); + + keys = g_key_file_get_keys (key_file, PRINT_SETTINGS_NAME, &n_keys, NULL); + + if (! keys) + return FALSE; + + for (i = 0; i < n_keys; i++) + { + gchar *value; + + value = g_key_file_get_value (key_file, + PRINT_SETTINGS_NAME, keys[i], NULL); + + if (value) + { + gtk_print_settings_set (settings, keys[i], value); + g_free (value); + } + } + + g_strfreev (keys); + + if (g_key_file_has_key (key_file, "image-setup", "unit", NULL)) + { + data->unit = g_key_file_get_integer (key_file, "image-setup", + "unit", NULL); + } + + if (g_key_file_has_key (key_file, "image-setup", "x-resolution", NULL) && + g_key_file_has_key (key_file, "image-setup", "y-resolution", NULL)) + { + data->xres = g_key_file_get_double (key_file, "image-setup", + "x-resolution", NULL); + data->yres = g_key_file_get_double (key_file, "image-setup", + "y-resolution", NULL); + } + + if (g_key_file_has_key (key_file, "image-setup", "x-offset", NULL) && + g_key_file_has_key (key_file, "image-setup", "y-offset", NULL)) + { + data->offset_x = g_key_file_get_double (key_file, "image-setup", + "x-offset", NULL); + data->offset_y = g_key_file_get_double (key_file, "image-setup", + "y-offset", NULL); + } + + if (g_key_file_has_key (key_file, "image-setup", "center-mode", NULL)) + { + data->center = g_key_file_get_integer (key_file, "image-setup", + "center-mode", NULL); + } + + if (g_key_file_has_key (key_file, "image-setup", "use-full-page", NULL)) + { + data->use_full_page = g_key_file_get_boolean (key_file, "image-setup", + "use-full-page", NULL); + } + + if (g_key_file_has_key (key_file, "image-setup", "crop-marks", NULL)) + { + data->draw_crop_marks = g_key_file_get_boolean (key_file, "image-setup", + "crop-marks", NULL); + } + + gtk_print_operation_set_print_settings (operation, settings); + + return TRUE; +} + +static gboolean +print_settings_check_version (GKeyFile *key_file) +{ + gint major_version; + gint minor_version; + + if (! g_key_file_has_group (key_file, "meta")) + return FALSE; + + major_version = g_key_file_get_integer (key_file, + "meta", "major-version", NULL); + + if (major_version != PRINT_SETTINGS_MAJOR_VERSION) + return FALSE; + + minor_version = g_key_file_get_integer (key_file, + "meta", "minor-version", NULL); + + if (minor_version != PRINT_SETTINGS_MINOR_VERSION) + return FALSE; + + return TRUE; +} |