mirror of https://github.com/GNOME/gimp.git
765 lines
25 KiB
C
765 lines
25 KiB
C
/* align_layers.c
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* Author: Shuji Narazaki <narazaki@InetQ.or.jp>
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* Version: 0.26
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*
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* Copyright (C) 1997-1998 Shuji Narazaki <narazaki@InetQ.or.jp>
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <https://www.gnu.org/licenses/>.
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*/
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#include "config.h"
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#include <libgimp/gimp.h>
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#include <libgimp/gimpui.h>
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#include "libgimp/stdplugins-intl.h"
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#define PLUG_IN_PROC "plug-in-align-layers"
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#define PLUG_IN_BINARY "align-layers"
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#define PLUG_IN_ROLE "gimp-align-layers"
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enum
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{
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H_NONE,
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H_COLLECT,
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LEFT2RIGHT,
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RIGHT2LEFT,
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SNAP2HGRID
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};
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enum
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{
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H_BASE_LEFT,
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H_BASE_CENTER,
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H_BASE_RIGHT
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};
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enum
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{
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V_NONE,
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V_COLLECT,
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TOP2BOTTOM,
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BOTTOM2TOP,
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SNAP2VGRID
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};
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enum
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{
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V_BASE_TOP,
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V_BASE_CENTER,
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V_BASE_BOTTOM
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};
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typedef struct
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{
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gint step_x;
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gint step_y;
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gint base_x;
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gint base_y;
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} AlignData;
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typedef struct _AlignLayers AlignLayers;
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typedef struct _AlignLayersClass AlignLayersClass;
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struct _AlignLayers
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{
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GimpPlugIn parent_instance;
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};
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struct _AlignLayersClass
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{
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GimpPlugInClass parent_class;
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};
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#define ALIGN_LAYERS_TYPE (align_layers_get_type ())
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#define ALIGN_LAYERS(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), ALIGN_LAYERS_TYPE, AlignLayers))
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GType align_layers_get_type (void) G_GNUC_CONST;
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static GList * align_layers_query_procedures (GimpPlugIn *plug_in);
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static GimpProcedure * align_layers_create_procedure (GimpPlugIn *plug_in,
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const gchar *name);
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static GimpValueArray * align_layers_run (GimpProcedure *procedure,
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GimpRunMode run_mode,
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GimpImage *image,
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gint n_drawables,
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GimpDrawable **drawables,
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GimpProcedureConfig *config,
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gpointer run_data);
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/* Main function */
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static GimpPDBStatusType align_layers (GimpImage *image,
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GObject *config);
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/* Helpers and internal functions */
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static gint align_layers_count_visibles_layers (GList *layers);
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static GimpLayer * align_layers_find_last_layer (GList *layers,
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gboolean *found);
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static gint align_layers_spread_visibles_layers (GList *layers,
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GimpLayer **layers_array);
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static GimpLayer ** align_layers_spread_image (GimpImage *image,
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gint *layer_num);
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static GimpLayer * align_layers_find_background (GimpImage *image);
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static AlignData align_layers_gather_data (GimpLayer **layers,
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gint layer_num,
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GimpLayer *background,
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GObject *config);
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static void align_layers_perform_alignment (GimpLayer **layers,
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gint layer_num,
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AlignData data,
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GObject *config);
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static void align_layers_get_align_offsets (GimpDrawable *drawable,
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gint *x,
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gint *y,
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GObject *config);
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static gint align_layers_dialog (GimpProcedure *procedure,
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GObject *config);
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G_DEFINE_TYPE (AlignLayers, align_layers, GIMP_TYPE_PLUG_IN)
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GIMP_MAIN (ALIGN_LAYERS_TYPE)
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DEFINE_STD_SET_I18N
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static void
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align_layers_class_init (AlignLayersClass *klass)
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{
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GimpPlugInClass *plug_in_class = GIMP_PLUG_IN_CLASS (klass);
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plug_in_class->query_procedures = align_layers_query_procedures;
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plug_in_class->create_procedure = align_layers_create_procedure;
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plug_in_class->set_i18n = STD_SET_I18N;
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}
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static void
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align_layers_init (AlignLayers *film)
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{
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}
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static GList *
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align_layers_query_procedures (GimpPlugIn *plug_in)
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{
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return g_list_append (NULL, g_strdup (PLUG_IN_PROC));
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}
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static GimpProcedure *
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align_layers_create_procedure (GimpPlugIn *plug_in,
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const gchar *name)
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{
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GimpProcedure *procedure = NULL;
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if (! strcmp (name, PLUG_IN_PROC))
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{
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procedure = gimp_image_procedure_new (plug_in, name,
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GIMP_PDB_PROC_TYPE_PLUGIN,
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align_layers_run, NULL, NULL);
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gimp_procedure_set_image_types (procedure, "*");
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gimp_procedure_set_sensitivity_mask (procedure,
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GIMP_PROCEDURE_SENSITIVE_DRAWABLE |
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GIMP_PROCEDURE_SENSITIVE_DRAWABLES |
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GIMP_PROCEDURE_SENSITIVE_NO_DRAWABLES);
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gimp_procedure_set_menu_label (procedure, _("Align Visi_ble Layers..."));
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gimp_procedure_add_menu_path (procedure, "<Image>/Image/[Arrange]");
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gimp_procedure_set_documentation (procedure,
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_("Align all visible layers of the image"),
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_("Align visible layers"),
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name);
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gimp_procedure_set_attribution (procedure,
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"Shuji Narazaki <narazaki@InetQ.or.jp>",
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"Shuji Narazaki",
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"1997");
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gimp_procedure_add_choice_argument (procedure, "horizontal-style",
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_("_Horizontal style"),
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"",
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gimp_choice_new_with_values ("none", H_NONE, _("None"), NULL,
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"collect", H_COLLECT, _("Collect"), NULL,
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"fill-left-to-right", LEFT2RIGHT, _("Fill (left to right)"), NULL,
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"fill-right-to-left", RIGHT2LEFT, _("Fill (right to left)"), NULL,
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"snap-to-grid", SNAP2HGRID, _("Snap to grid"), NULL,
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NULL),
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"none",
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G_PARAM_READWRITE);
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gimp_procedure_add_choice_argument (procedure, "horizontal-base",
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_("Hori_zontal base"),
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"",
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gimp_choice_new_with_values ("left-edge", H_BASE_LEFT, _("Left edge"), NULL,
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"center", H_BASE_CENTER, _("Center"), NULL,
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"right-edge", H_BASE_RIGHT, _("Right edge"), NULL,
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NULL),
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"left-edge",
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G_PARAM_READWRITE);
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gimp_procedure_add_choice_argument (procedure, "vertical-style",
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_("_Vertical style"),
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"",
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gimp_choice_new_with_values ("none", V_NONE, _("None"), NULL,
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"collect", V_COLLECT, _("Collect"), NULL,
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"fill-left-to-right", TOP2BOTTOM, _("Fill (top to bottom)"), NULL,
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"fill-right-to-left", BOTTOM2TOP, _("Fill (bottom to top)"), NULL,
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"snap-to-grid", SNAP2VGRID, _("Snap to grid"), NULL,
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NULL),
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"none",
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G_PARAM_READWRITE);
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gimp_procedure_add_choice_argument (procedure, "vertical-base",
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_("Ver_tical base"),
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"",
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gimp_choice_new_with_values ("top-edge", V_BASE_TOP, _("Top edge"), NULL,
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"center", V_BASE_CENTER, _("Center"), NULL,
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"bottom-edge", V_BASE_BOTTOM, _("Bottom edge"), NULL,
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NULL),
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"top-edge",
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G_PARAM_READWRITE);
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gimp_procedure_add_int_argument (procedure, "grid-size",
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_("_Grid"),
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_("Grid"),
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1, 200, 10,
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GIMP_PARAM_READWRITE);
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gimp_procedure_add_boolean_argument (procedure,
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"ignore-bottom-layer",
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_("Ignore the _bottom layer even if visible"),
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_("Ignore the bottom layer even if visible"),
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TRUE,
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G_PARAM_READWRITE);
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gimp_procedure_add_boolean_argument (procedure,
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"use-bottom-layer",
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_("_Use the (invisible) bottom layer as the base"),
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_("Use the (invisible) bottom layer as the base"),
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FALSE,
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G_PARAM_READWRITE);
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/* TODO: these 2 arguments existed in the original procedure but
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* were actually unused. If we want to keep them, let's at least
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* implement the documented behavior, or else let's just drop
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* them.
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*/
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/*
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gimp_procedure_add_boolean_argument (procedure,
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"link-after-alignment",
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"Link the visible layers after alignment",
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FALSE,
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G_PARAM_READWRITE);
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gimp_procedure_add_boolean_argument (procedure,
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"use-bottom",
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"use the bottom layer as the base of alignment",
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TRUE,
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G_PARAM_READWRITE);
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*/
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}
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return procedure;
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}
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static GimpValueArray *
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align_layers_run (GimpProcedure *procedure,
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GimpRunMode run_mode,
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GimpImage *image,
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gint n_drawables,
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GimpDrawable **drawables,
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GimpProcedureConfig *config,
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gpointer run_data)
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{
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GimpValueArray *return_vals = NULL;
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GimpPDBStatusType status = GIMP_PDB_EXECUTION_ERROR;
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GError *error = NULL;
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GList *layers;
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gint layer_num;
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switch ( run_mode )
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{
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case GIMP_RUN_INTERACTIVE:
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layers = gimp_image_list_layers (image);
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layer_num = align_layers_count_visibles_layers (layers);
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g_list_free (layers);
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if (layer_num < 2)
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{
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g_set_error (&error, GIMP_PLUG_IN_ERROR, 0,
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_("There are not enough layers to align."));
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return gimp_procedure_new_return_values (procedure,
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GIMP_PDB_CALLING_ERROR,
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error);
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}
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if (! align_layers_dialog (procedure, G_OBJECT (config)))
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status = GIMP_PDB_CANCEL;
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break;
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case GIMP_RUN_NONINTERACTIVE:
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case GIMP_RUN_WITH_LAST_VALS:
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break;
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}
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if (status != GIMP_PDB_CANCEL)
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{
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status = align_layers (image, G_OBJECT (config));
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if (run_mode != GIMP_RUN_NONINTERACTIVE)
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gimp_displays_flush ();
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}
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return_vals = gimp_procedure_new_return_values (procedure, status, error);
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return return_vals;
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}
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/*
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* Main function
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*/
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static GimpPDBStatusType
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align_layers (GimpImage *image,
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GObject *config)
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{
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gint layer_num = 0;
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GimpLayer **layers = NULL;
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GimpLayer *background = 0;
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AlignData data;
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gboolean ignore_bottom_layer;
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g_object_get (config,
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"ignore-bottom-layer", &ignore_bottom_layer,
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NULL);
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layers = align_layers_spread_image (image, &layer_num);
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if (layer_num < 2)
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{
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g_free (layers);
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return GIMP_PDB_EXECUTION_ERROR;
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}
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background = align_layers_find_background (image);
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/* If we want to ignore the bottom layer and if it's visible */
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if (ignore_bottom_layer && background == layers[layer_num - 1])
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{
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layer_num--;
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}
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data = align_layers_gather_data (layers,
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layer_num,
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background,
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config);
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gimp_image_undo_group_start (image);
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align_layers_perform_alignment (layers,
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layer_num,
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data,
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config);
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gimp_image_undo_group_end (image);
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g_free (layers);
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return GIMP_PDB_SUCCESS;
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}
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/*
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* Find the bottommost layer, visible or not
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* The image must contain at least one layer.
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*/
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static GimpLayer *
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align_layers_find_last_layer (GList *layers,
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gboolean *found)
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{
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GList *last = g_list_last (layers);
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for (; last; last = last->prev)
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{
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GimpItem *item = last->data;
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if (gimp_item_is_group (item))
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{
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GList *children;
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GimpLayer *last_layer;
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children = gimp_item_list_children (item);
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last_layer = align_layers_find_last_layer (children,
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found);
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g_list_free (children);
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if (*found)
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return last_layer;
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}
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else if (gimp_item_is_layer (item))
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{
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*found = TRUE;
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return GIMP_LAYER (item);
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}
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}
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/* should never happen */
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return NULL;
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}
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/*
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* Return the bottom layer.
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*/
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static GimpLayer *
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align_layers_find_background (GimpImage *image)
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{
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GList *layers;
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GimpLayer *background;
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gboolean found = FALSE;
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layers = gimp_image_list_layers (image);
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background = align_layers_find_last_layer (layers, &found);
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g_list_free (layers);
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return background;
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}
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/*
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* Fill layers_array with all visible layers.
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* layers_array needs to be allocated before the call
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*/
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static gint
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align_layers_spread_visibles_layers (GList *layers,
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GimpLayer **layers_array)
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{
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GList *iter;
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gint index = 0;
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for (iter = layers; iter; iter = iter->next)
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{
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GimpItem *item = iter->data;
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if (gimp_item_get_visible (item))
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{
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if (gimp_item_is_group (item))
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{
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GList *children;
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children = gimp_item_list_children (item);
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index += align_layers_spread_visibles_layers (children,
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&(layers_array[index]));
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g_list_free (children);
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}
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else if (gimp_item_is_layer (item))
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{
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layers_array[index] = GIMP_LAYER (item);
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index++;
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}
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}
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}
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return index;
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}
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/*
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* Return a contiguous array of all visible layers
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*/
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static GimpLayer **
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align_layers_spread_image (GimpImage *image,
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gint *layer_num)
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{
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GList *layers;
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GimpLayer **layers_array;
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layers = gimp_image_list_layers (image);
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*layer_num = align_layers_count_visibles_layers (layers);
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layers_array = g_malloc (sizeof (GimpLayer *) * *layer_num);
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align_layers_spread_visibles_layers (layers,
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layers_array);
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g_list_free (layers);
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return layers_array;
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}
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static gint
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align_layers_count_visibles_layers (GList *layers)
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{
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GList *iter;
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gint count = 0;
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for (iter = layers; iter; iter = iter->next)
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{
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GimpItem *item = iter->data;
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if (gimp_item_get_visible (item))
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{
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if (gimp_item_is_group (item))
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{
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GList *children;
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children = gimp_item_list_children (item);
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count += align_layers_count_visibles_layers (children);
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g_list_free (children);
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}
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else if (gimp_item_is_layer (item))
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{
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count += 1;
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}
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}
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}
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return count;
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}
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static AlignData
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align_layers_gather_data (GimpLayer **layers,
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gint layer_num,
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GimpLayer *background,
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GObject *config)
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{
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AlignData data;
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gint min_x = G_MAXINT;
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gint min_y = G_MAXINT;
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gint max_x = G_MININT;
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gint max_y = G_MININT;
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gint index;
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gint orig_x = 0;
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gint orig_y = 0;
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gint offset_x = 0;
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gint offset_y = 0;
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gint horizontal_style;
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gint vertical_style;
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gboolean use_bottom_layer;
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g_object_get (config,
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"use-bottom-layer", &use_bottom_layer,
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NULL);
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horizontal_style = gimp_procedure_config_get_choice_id (GIMP_PROCEDURE_CONFIG (config),
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"horizontal-style");
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vertical_style = gimp_procedure_config_get_choice_id (GIMP_PROCEDURE_CONFIG (config),
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"vertical-style");
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data.step_x = 0;
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data.step_y = 0;
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|
data.base_x = 0;
|
|
data.base_y = 0;
|
|
|
|
/* 0 is the top layer */
|
|
for (index = 0; index < layer_num; index++)
|
|
{
|
|
gimp_drawable_get_offsets (GIMP_DRAWABLE (layers[index]), &orig_x, &orig_y);
|
|
|
|
align_layers_get_align_offsets (GIMP_DRAWABLE (layers[index]),
|
|
&offset_x,
|
|
&offset_y,
|
|
config);
|
|
orig_x += offset_x;
|
|
orig_y += offset_y;
|
|
|
|
min_x = MIN (min_x, orig_x);
|
|
max_x = MAX (max_x, orig_x);
|
|
min_y = MIN (min_y, orig_y);
|
|
max_y = MAX (max_y, orig_y);
|
|
}
|
|
|
|
if (use_bottom_layer)
|
|
{
|
|
gimp_drawable_get_offsets (GIMP_DRAWABLE (background), &orig_x, &orig_y);
|
|
|
|
align_layers_get_align_offsets (GIMP_DRAWABLE (background),
|
|
&offset_x,
|
|
&offset_y,
|
|
config);
|
|
orig_x += offset_x;
|
|
orig_y += offset_y;
|
|
data.base_x = min_x = orig_x;
|
|
data.base_y = min_y = orig_y;
|
|
}
|
|
|
|
if (layer_num > 1)
|
|
{
|
|
data.step_x = (max_x - min_x) / (layer_num - 1);
|
|
data.step_y = (max_y - min_y) / (layer_num - 1);
|
|
}
|
|
|
|
if ((horizontal_style == LEFT2RIGHT) || (horizontal_style == RIGHT2LEFT))
|
|
data.base_x = min_x;
|
|
|
|
if ((vertical_style == TOP2BOTTOM) || (vertical_style == BOTTOM2TOP))
|
|
data.base_y = min_y;
|
|
|
|
return data;
|
|
}
|
|
|
|
/*
|
|
* Modifies position of each visible layers
|
|
* according to data.
|
|
*/
|
|
static void
|
|
align_layers_perform_alignment (GimpLayer **layers,
|
|
gint layer_num,
|
|
AlignData data,
|
|
GObject *config)
|
|
{
|
|
gint index;
|
|
gint horizontal_style;
|
|
gint vertical_style;
|
|
gint grid_size;
|
|
|
|
g_object_get (config,
|
|
"grid-size", &grid_size,
|
|
NULL);
|
|
horizontal_style = gimp_procedure_config_get_choice_id (GIMP_PROCEDURE_CONFIG (config),
|
|
"horizontal-style");
|
|
vertical_style = gimp_procedure_config_get_choice_id (GIMP_PROCEDURE_CONFIG (config),
|
|
"vertical-style");
|
|
|
|
for (index = 0; index < layer_num; index++)
|
|
{
|
|
gint x = 0;
|
|
gint y = 0;
|
|
gint orig_x;
|
|
gint orig_y;
|
|
gint offset_x;
|
|
gint offset_y;
|
|
|
|
gimp_drawable_get_offsets (GIMP_DRAWABLE (layers[index]), &orig_x, &orig_y);
|
|
|
|
align_layers_get_align_offsets (GIMP_DRAWABLE (layers[index]),
|
|
&offset_x,
|
|
&offset_y,
|
|
config);
|
|
switch (horizontal_style)
|
|
{
|
|
case H_NONE:
|
|
x = orig_x;
|
|
break;
|
|
case H_COLLECT:
|
|
x = data.base_x - offset_x;
|
|
break;
|
|
case LEFT2RIGHT:
|
|
x = (data.base_x + index * data.step_x) - offset_x;
|
|
break;
|
|
case RIGHT2LEFT:
|
|
x = (data.base_x + (layer_num - index - 1) * data.step_x) - offset_x;
|
|
break;
|
|
case SNAP2HGRID:
|
|
x = grid_size
|
|
* (int) ((orig_x + offset_x + grid_size /2) / grid_size)
|
|
- offset_x;
|
|
break;
|
|
}
|
|
|
|
switch (vertical_style)
|
|
{
|
|
case V_NONE:
|
|
y = orig_y;
|
|
break;
|
|
case V_COLLECT:
|
|
y = data.base_y - offset_y;
|
|
break;
|
|
case TOP2BOTTOM:
|
|
y = (data.base_y + index * data.step_y) - offset_y;
|
|
break;
|
|
case BOTTOM2TOP:
|
|
y = (data.base_y + (layer_num - index - 1) * data.step_y) - offset_y;
|
|
break;
|
|
case SNAP2VGRID:
|
|
y = grid_size
|
|
* (int) ((orig_y + offset_y + grid_size / 2) / grid_size)
|
|
- offset_y;
|
|
break;
|
|
}
|
|
|
|
gimp_layer_set_offsets (layers[index], x, y);
|
|
}
|
|
}
|
|
|
|
static void
|
|
align_layers_get_align_offsets (GimpDrawable *drawable,
|
|
gint *x,
|
|
gint *y,
|
|
GObject *config)
|
|
{
|
|
gint width = gimp_drawable_get_width (drawable);
|
|
gint height = gimp_drawable_get_height (drawable);
|
|
gint horizontal_base;
|
|
gint vertical_base;
|
|
|
|
horizontal_base = gimp_procedure_config_get_choice_id (GIMP_PROCEDURE_CONFIG (config),
|
|
"horizontal-base");
|
|
vertical_base = gimp_procedure_config_get_choice_id (GIMP_PROCEDURE_CONFIG (config),
|
|
"vertical-base");
|
|
|
|
switch (horizontal_base)
|
|
{
|
|
case H_BASE_LEFT:
|
|
*x = 0;
|
|
break;
|
|
case H_BASE_CENTER:
|
|
*x = width / 2;
|
|
break;
|
|
case H_BASE_RIGHT:
|
|
*x = width;
|
|
break;
|
|
default:
|
|
*x = 0;
|
|
break;
|
|
}
|
|
|
|
switch (vertical_base)
|
|
{
|
|
case V_BASE_TOP:
|
|
*y = 0;
|
|
break;
|
|
case V_BASE_CENTER:
|
|
*y = height / 2;
|
|
break;
|
|
case V_BASE_BOTTOM:
|
|
*y = height;
|
|
break;
|
|
default:
|
|
*y = 0;
|
|
break;
|
|
}
|
|
}
|
|
|
|
static int
|
|
align_layers_dialog (GimpProcedure *procedure,
|
|
GObject *config)
|
|
{
|
|
GtkWidget *dialog;
|
|
gboolean run;
|
|
|
|
gimp_ui_init (PLUG_IN_BINARY);
|
|
|
|
dialog = gimp_procedure_dialog_new (procedure,
|
|
GIMP_PROCEDURE_CONFIG (config),
|
|
_("Align Visible Layers"));
|
|
|
|
gimp_procedure_dialog_get_scale_entry (GIMP_PROCEDURE_DIALOG (dialog),
|
|
"grid-size", 1.0);
|
|
|
|
gimp_procedure_dialog_fill (GIMP_PROCEDURE_DIALOG (dialog),
|
|
NULL);
|
|
|
|
gtk_widget_show (dialog);
|
|
|
|
run = gimp_procedure_dialog_run (GIMP_PROCEDURE_DIALOG (dialog));
|
|
|
|
gtk_widget_destroy (dialog);
|
|
|
|
return run;
|
|
}
|