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PIKApp/plug-ins/ifs-compose/ifs-compose.c

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/* PIKA - Photo and Image Kooker Application
* a rebranding of The GNU Image Manipulation Program (created with heckimp)
* A derived work which may be trivial. However, any changes may be (C)2023 by Aldercone Studio
*
* Original copyright, applying to most contents (license remains unchanged):
* Copyright (C) 1995 Spencer Kimball and Peter Mattis
*
* IfsCompose is a interface for creating IFS fractals by
* direct manipulation.
* Copyright (C) 1997 Owen Taylor
*
* 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/>.
*/
/* TODO
* ----
*
* 1. Run in non-interactive mode (need to figure out useful way for a
* script to give the 19N parameters for an image). Perhaps just
* support saving parameters to a file, script passes file name.
* 2. Figure out if we need multiple phases for supersampled brushes.
*/
#include "config.h"
#include <string.h>
#include <errno.h>
#include <glib/gstdio.h>
#include <libpika/pika.h>
#include <libpika/pikaui.h>
#include "ifs-compose.h"
#include "libpika/stdplugins-intl.h"
#define RESPONSE_RESET 1
#define RESPONSE_OPEN 2
#define RESPONSE_SAVE 3
#define DESIGN_AREA_MAX_SIZE 300
#define PREVIEW_RENDER_CHUNK 10000
#define UNDO_LEVELS 24
#define PLUG_IN_PARASITE "ifscompose-parasite"
#define PLUG_IN_PROC "plug-in-ifscompose"
#define PLUG_IN_BINARY "ifs-compose"
#define PLUG_IN_ROLE "pika-ifs-compose"
typedef enum
{
OP_TRANSLATE,
OP_ROTATE, /* or scale */
OP_STRETCH
} DesignOp;
typedef enum
{
VALUE_PAIR_INT,
VALUE_PAIR_DOUBLE
} ValuePairType;
typedef struct
{
GtkAdjustment *adjustment;
GtkWidget *scale;
GtkWidget *spin;
ValuePairType type;
guint timeout_id;
union
{
gdouble *d;
gint *i;
} data;
} ValuePair;
typedef struct
{
IfsComposeVals ifsvals;
AffElement **elements;
gboolean *element_selected;
gint current_element;
} UndoItem;
typedef struct
{
PikaRGB *color;
GtkWidget *hbox;
GtkWidget *orig_preview;
GtkWidget *button;
gboolean fixed_point;
} ColorMap;
typedef struct
{
GtkWidget *dialog;
ValuePair *iterations_pair;
ValuePair *subdivide_pair;
ValuePair *radius_pair;
ValuePair *memory_pair;
} IfsOptionsDialog;
typedef struct
{
GtkWidget *area;
cairo_surface_t *surface;
DesignOp op;
gdouble op_x;
gdouble op_y;
gdouble op_xcenter;
gdouble op_ycenter;
gdouble op_center_x;
gdouble op_center_y;
guint button_state;
gint num_selected;
} IfsDesignArea;
typedef struct
{
ValuePair *prob_pair;
ValuePair *x_pair;
ValuePair *y_pair;
ValuePair *scale_pair;
ValuePair *angle_pair;
ValuePair *asym_pair;
ValuePair *shear_pair;
GtkWidget *flip_check_button;
ColorMap *red_cmap;
ColorMap *green_cmap;
ColorMap *blue_cmap;
ColorMap *black_cmap;
ColorMap *target_cmap;
ValuePair *hue_scale_pair;
ValuePair *value_scale_pair;
GtkWidget *simple_button;
GtkWidget *full_button;
GtkWidget *current_frame;
GtkWidget *preview;
guchar *preview_data;
gint preview_iterations;
gint drawable_width;
gint drawable_height;
gint preview_width;
gint preview_height;
AffElement *selected_orig;
gint current_element;
AffElementVals current_vals;
gboolean in_update; /* true if we're currently in
update_values() - don't do anything
on updates */
} IfsDialog;
typedef struct
{
gboolean run;
} IfsComposeInterface;
struct _PikaIfs
{
PikaPlugIn parent_instance;
GtkApplication *app;
GtkWidget *dialog;
PikaDrawable *drawable;
gint response_id;
GtkWidget *delete_button;
GtkWidget *undo_button;
GtkWidget *redo_button;
GtkBuilder *builder;
};
#define PIKA_TYPE_IFS (pika_ifs_get_type ())
G_DECLARE_FINAL_TYPE (PikaIfs, pika_ifs, PIKA, IFS, PikaPlugIn)
GType ifs_get_type (void) G_GNUC_CONST;
static void pika_ifs_finalize (GObject *object);
static GList * ifs_query_procedures (PikaPlugIn *plug_in);
static PikaProcedure * ifs_create_procedure (PikaPlugIn *plug_in,
const gchar *name);
static PikaValueArray * ifs_run (PikaProcedure *procedure,
PikaRunMode run_mode,
PikaImage *image,
gint n_drawables,
PikaDrawable **drawables,
PikaProcedureConfig *config,
gpointer run_data);
/* user interface functions */
static void on_app_activate (GApplication *gapp,
gpointer user_data);
static gint ifs_compose_dialog (PikaIfs *ifs,
PikaDrawable *drawable);
static void ifs_options_dialog (void);
static GtkWidget * ifs_compose_trans_page (void);
static GtkWidget * ifs_compose_color_page (void);
static void design_op_actions_update (void);
static void design_area_create (PikaIfs *ifs,
GtkWidget *window,
gint design_width,
gint design_height);
/* functions for drawing design window */
static void update_values (void);
static void set_current_element (gint index);
static void design_area_realize (GtkWidget *widget);
static gint design_area_draw (GtkWidget *widget,
cairo_t *cr);
static gint design_area_button_press (GtkWidget *widget,
GdkEventButton *event,
PikaIfs *ifs);
static gint design_area_button_release (GtkWidget *widget,
GdkEventButton *event);
static void design_area_select_all_action (GSimpleAction *action,
GVariant *parameter,
gpointer user_data);
static void design_area_size_allocate (GtkWidget *widget,
GtkAllocation *allocation);
static gint design_area_motion (GtkWidget *widget,
GdkEventMotion *event);
static void design_area_redraw (void);
/* Undo ring functions */
static void undo_begin (void);
static void undo_update (gint element);
static void undo_exchange (gint el);
static void undo_action (GSimpleAction *action,
GVariant *parameter,
gpointer user_data);
static void redo_action (GSimpleAction *action,
GVariant *parameter,
gpointer user_data);
static void recompute_center (gboolean save_undo);
static void recompute_center_action (GSimpleAction *action,
GVariant *parameter,
gpointer user_data);
static void ifs_compose (PikaDrawable *drawable);
static ColorMap *color_map_create (const gchar *name,
PikaRGB *orig_color,
PikaRGB *data,
gboolean fixed_point);
static void color_map_color_changed_cb (GtkWidget *widget,
ColorMap *color_map);
static void color_map_update (ColorMap *color_map);
/* interface functions */
static void simple_color_toggled (GtkWidget *widget, gpointer data);
static void simple_color_set_sensitive (void);
static void val_changed_update (void);
static ValuePair *value_pair_create (gpointer data,
gdouble lower,
gdouble upper,
gboolean create_scale,
ValuePairType type);
static void value_pair_update (ValuePair *value_pair);
static void value_pair_scale_callback (GtkAdjustment *adjustment,
ValuePair *value_pair);
static void flip_check_button_callback (GtkWidget *widget, gpointer data);
static gint preview_idle_render (gpointer data);
static void transform_change_state (GSimpleAction *action,
GVariant *new_state,
gpointer user_data);
static void ifs_compose_preview (void);
static void ifs_compose_set_defaults (void);
static void ifs_compose_new_action (GSimpleAction *action,
GVariant *parameter,
gpointer user_data);
static void ifs_compose_delete_action (GSimpleAction *action,
GVariant *parameter,
gpointer user_data);
static void ifs_compose_options_action (GSimpleAction *action,
GVariant *parameter,
gpointer user_data);
static void ifs_compose_load (void);
static void ifs_compose_save (void);
static void ifs_compose_response (GtkWidget *widget,
gint response_id);
/* GAction helper methods */
static void window_destroy (GtkWidget *widget,
PikaIfs *ifs);
static GtkWidget * add_tool_button (GtkWidget *toolbar,
const char *action,
const char *icon,
const char *label,
const char *tooltip);
static GtkWidget * add_toggle_button (GtkWidget *toolbar,
const char *action,
const char *icon,
const char *label,
const char *tooltip);
static void add_tool_separator (GtkWidget *toolbar,
gboolean expand);
G_DEFINE_TYPE (PikaIfs, pika_ifs, PIKA_TYPE_PLUG_IN)
PIKA_MAIN (PIKA_TYPE_IFS)
DEFINE_STD_SET_I18N
static IfsDialog *ifsD = NULL;
static IfsOptionsDialog *ifsOptD = NULL;
static IfsDesignArea *ifsDesign = NULL;
static PikaIfs *ifs = NULL;
static AffElement **elements = NULL;
static gint *element_selected = NULL;
/* labels are generated by printing this int */
static gint count_for_naming = 0;
static UndoItem undo_ring[UNDO_LEVELS];
static gint undo_cur = -1;
static gint undo_num = 0;
static gint undo_start = 0;
/* num_elements = 0, signals not inited */
static IfsComposeVals ifsvals =
{
0, /* num_elements */
50000, /* iterations */
4096, /* max_memory */
4, /* subdivide */
0.75, /* radius */
1.0, /* aspect ratio */
0.5, /* center_x */
0.5, /* center_y */
};
static IfsComposeInterface ifscint =
{
FALSE, /* run */
};
static const GActionEntry ACTIONS[] =
{
{ "new", ifs_compose_new_action },
{ "delete", ifs_compose_delete_action },
{ "undo", undo_action },
{ "redo", redo_action },
{ "select-all", design_area_select_all_action },
{ "center", recompute_center_action },
{ "options", ifs_compose_options_action },
/* RadioButtons - only the default state is shown here. */
{ "transform", transform_change_state, "s", "'move'", NULL },
};
static void
pika_ifs_class_init (PikaIfsClass *klass)
{
PikaPlugInClass *plug_in_class = PIKA_PLUG_IN_CLASS (klass);
GObjectClass *object_class = G_OBJECT_CLASS (klass);
object_class->finalize = pika_ifs_finalize;
plug_in_class->query_procedures = ifs_query_procedures;
plug_in_class->create_procedure = ifs_create_procedure;
plug_in_class->set_i18n = STD_SET_I18N;
}
static void
pika_ifs_init (PikaIfs *ifs)
{
ifs->builder = NULL;
}
static void
pika_ifs_finalize (GObject *object)
{
PikaIfs *ifs = PIKA_IFS (object);
G_OBJECT_CLASS (pika_ifs_parent_class)->finalize (object);
g_clear_object (&ifs->builder);
}
static GList *
ifs_query_procedures (PikaPlugIn *plug_in)
{
return g_list_append (NULL, g_strdup (PLUG_IN_PROC));
}
static PikaProcedure *
ifs_create_procedure (PikaPlugIn *plug_in,
const gchar *name)
{
PikaProcedure *procedure = NULL;
if (! strcmp (name, PLUG_IN_PROC))
{
procedure = pika_image_procedure_new (plug_in, name,
PIKA_PDB_PROC_TYPE_PLUGIN,
ifs_run, NULL, NULL);
pika_procedure_set_image_types (procedure, "*");
pika_procedure_set_sensitivity_mask (procedure,
PIKA_PROCEDURE_SENSITIVE_DRAWABLE);
pika_procedure_set_menu_label (procedure, _("_IFS Fractal..."));
pika_procedure_add_menu_path (procedure,
"<Image>/Filters/Render/Fractals");
pika_procedure_set_documentation
(procedure,
_("Create an Iterated Function System (IFS) fractal"),
"Interactively create an Iterated Function System "
"fractal. Use the window on the upper left to adjust"
"the component transformations of the fractal. The "
"operation that is performed is selected by the "
"buttons underneath the window, or from a menu "
"popped up by the right mouse button. The fractal "
"will be rendered with a transparent background if "
"the current image has an alpha channel.",
name);
pika_procedure_set_attribution (procedure,
"Owen Taylor",
"Owen Taylor",
"1997");
PIKA_PROC_AUX_ARG_STRING (procedure, "fractal-str",
"The fractal description serialized as string",
NULL, NULL,
PIKA_PARAM_READWRITE);
}
return procedure;
}
static PikaValueArray *
ifs_run (PikaProcedure *procedure,
PikaRunMode run_mode,
PikaImage *image,
gint n_drawables,
PikaDrawable **drawables,
PikaProcedureConfig *config,
gpointer run_data)
{
PikaDrawable *drawable;
PikaParasite *parasite = NULL;
gboolean found_parasite = FALSE;
ifs = PIKA_IFS (pika_procedure_get_plug_in (procedure));
#if GLIB_CHECK_VERSION(2,74,0)
ifs->app = gtk_application_new (NULL, G_APPLICATION_DEFAULT_FLAGS);
#else
ifs->app = gtk_application_new (NULL, G_APPLICATION_FLAGS_NONE);
#endif
ifs->builder = gtk_builder_new_from_resource ("/technology.heckin/ifs/ifs-menus.ui");
gegl_init (NULL, NULL);
if (n_drawables != 1)
{
GError *error = NULL;
g_set_error (&error, PIKA_PLUG_IN_ERROR, 0,
_("Procedure '%s' only works with one drawable."),
pika_procedure_get_name (procedure));
return pika_procedure_new_return_values (procedure,
PIKA_PDB_CALLING_ERROR,
error);
}
else
{
drawable = drawables[0];
}
switch (run_mode)
{
case PIKA_RUN_INTERACTIVE:
/* Possibly retrieve data; first look for a parasite -
* if not found, fall back to global values
*/
parasite = pika_item_get_parasite (PIKA_ITEM (drawable),
PLUG_IN_PARASITE);
if (parasite)
{
gchar *parasite_data;
guint32 parasite_size;
parasite_data = (gchar *) pika_parasite_get_data (parasite, &parasite_size);
parasite_data = g_strndup (parasite_data, parasite_size);
found_parasite = ifsvals_parse_string (parasite_data, &ifsvals, &elements);
pika_parasite_free (parasite);
g_free (parasite_data);
}
if (! found_parasite)
{
gchar *data = NULL;
g_object_get (config, "fractal-str", &data, NULL);
if (data != NULL && strlen (data) > 0)
ifsvals_parse_string (data, &ifsvals, &elements);
g_free (data);
}
/* after ifsvals_parse_string, need to set up naming */
count_for_naming = ifsvals.num_elements;
ifs->drawable = drawable;
/* First acquire information with a dialog */
g_signal_connect (ifs->app, "activate", G_CALLBACK (on_app_activate), ifs);
g_application_run (G_APPLICATION (ifs->app), 0, NULL);
g_clear_object (&ifs->app);
if (! ifscint.run)
return pika_procedure_new_return_values (procedure,
PIKA_PDB_CANCEL,
NULL);
break;
case PIKA_RUN_NONINTERACTIVE:
return pika_procedure_new_return_values (procedure,
PIKA_PDB_CALLING_ERROR,
NULL);
break;
case PIKA_RUN_WITH_LAST_VALS:
{
gchar *data = NULL;
g_object_get (config, "fractal-str", &data, NULL);
if (data != NULL && strlen (data) > 0)
{
ifsvals_parse_string (data, &ifsvals, &elements);
}
else
{
/* FIXME: there is a known crash in this code path, because some
* base structures (which are visibly created as part of the
* dialog or with ifsvals_parse_string() on a valid serialized
* fractal) don't exist. This should be fixed so that we can run
* with last vals even when no last vals exist (which should use
* defaults).
*/
ifs_compose_set_defaults ();
}
g_free (data);
}
break;
default:
break;
}
if (run_mode == PIKA_RUN_INTERACTIVE)
{
gchar *str;
PikaParasite *parasite;
pika_image_undo_group_start (image);
/* run the effect */
ifs_compose (drawable);
/* Store data for next invocation - both globally and
* as a parasite on this layer
*/
str = ifsvals_stringify (&ifsvals, elements);
g_object_set (config, "fractal-str", str, NULL);
parasite = pika_parasite_new (PLUG_IN_PARASITE,
PIKA_PARASITE_PERSISTENT |
PIKA_PARASITE_UNDOABLE,
strlen (str) + 1, str);
pika_item_attach_parasite (PIKA_ITEM (drawable), parasite);
pika_parasite_free (parasite);
g_free (str);
pika_image_undo_group_end (image);
pika_displays_flush ();
}
else
{
/* run the effect */
ifs_compose (drawable);
}
return pika_procedure_new_return_values (procedure, PIKA_PDB_SUCCESS, NULL);
}
static GtkWidget *
ifs_compose_trans_page (void)
{
GtkWidget *vbox;
GtkWidget *grid;
GtkWidget *label;
vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 12);
gtk_container_set_border_width (GTK_CONTAINER (vbox), 12);
grid = gtk_grid_new ();
gtk_grid_set_column_spacing (GTK_GRID (grid), 12);
gtk_grid_set_row_spacing (GTK_GRID (grid), 12);
gtk_box_pack_start (GTK_BOX (vbox), grid, FALSE, FALSE, 0);
gtk_widget_show (grid);
/* X */
label = gtk_label_new (_("X:"));
gtk_label_set_xalign (GTK_LABEL (label), 0.0);
gtk_grid_attach (GTK_GRID (grid), label, 0, 0, 1, 1);
// GTK_FILL, GTK_FILL, 0, 0);
gtk_widget_show (label);
ifsD->x_pair = value_pair_create (&ifsD->current_vals.x, 0.0, 1.0, FALSE,
VALUE_PAIR_DOUBLE);
gtk_grid_attach (GTK_GRID (grid), ifsD->x_pair->spin, 1, 0, 1, 1);
// GTK_FILL, GTK_FILL, 0, 0);
gtk_widget_show (ifsD->x_pair->spin);
/* Y */
label = gtk_label_new (_("Y:"));
gtk_label_set_xalign (GTK_LABEL (label), 0.0);
gtk_grid_attach (GTK_GRID (grid), label, 0, 1, 1, 1);
// GTK_FILL, GTK_FILL, 0, 0);
gtk_widget_show (label);
ifsD->y_pair = value_pair_create (&ifsD->current_vals.y, 0.0, 1.0, FALSE,
VALUE_PAIR_DOUBLE);
gtk_grid_attach (GTK_GRID (grid), ifsD->y_pair->spin, 1, 1, 1, 1);
// GTK_FILL, GTK_FILL, 0, 0);
gtk_widget_show (ifsD->y_pair->spin);
/* Scale */
label = gtk_label_new (_("Scale:"));
gtk_label_set_xalign (GTK_LABEL (label), 0.0);
gtk_grid_attach (GTK_GRID (grid), label, 2, 0, 1, 1);
// GTK_FILL, GTK_FILL, 0, 0);
gtk_widget_show (label);
ifsD->scale_pair = value_pair_create (&ifsD->current_vals.scale, 0.0, 1.0,
FALSE, VALUE_PAIR_DOUBLE);
gtk_grid_attach (GTK_GRID (grid), ifsD->scale_pair->spin, 3, 0, 1, 1);
// GTK_FILL, GTK_FILL, 0, 0);
gtk_widget_show (ifsD->scale_pair->spin);
/* Angle */
label = gtk_label_new (_("Angle:"));
gtk_label_set_xalign (GTK_LABEL (label), 0.0);
gtk_grid_attach (GTK_GRID (grid), label, 2, 1, 1, 1);
// GTK_FILL, GTK_FILL, 0, 0);
gtk_widget_show (label);
ifsD->angle_pair = value_pair_create (&ifsD->current_vals.theta, -180, 180,
FALSE, VALUE_PAIR_DOUBLE);
gtk_grid_attach (GTK_GRID (grid), ifsD->angle_pair->spin, 3, 1, 1, 1);
// GTK_FILL, GTK_FILL, 0, 0);
gtk_widget_show (ifsD->angle_pair->spin);
/* Asym */
label = gtk_label_new (_("Asymmetry:"));
gtk_label_set_xalign (GTK_LABEL (label), 0.0);
gtk_grid_attach (GTK_GRID (grid), label, 4, 0, 1, 1);
// GTK_FILL, GTK_FILL, 0, 0);
gtk_widget_show (label);
ifsD->asym_pair = value_pair_create (&ifsD->current_vals.asym, 0.10, 10.0,
FALSE, VALUE_PAIR_DOUBLE);
gtk_grid_attach (GTK_GRID (grid), ifsD->asym_pair->spin, 5, 0, 1, 1);
// GTK_FILL, GTK_FILL, 0, 0);
gtk_widget_show (ifsD->asym_pair->spin);
/* Shear */
label = gtk_label_new (_("Shear:"));
gtk_label_set_xalign (GTK_LABEL (label), 0.0);
gtk_grid_attach (GTK_GRID (grid), label, 4, 1, 1, 1);
// GTK_FILL, GTK_FILL, 0, 0);
gtk_widget_show (label);
ifsD->shear_pair = value_pair_create (&ifsD->current_vals.shear, -10.0, 10.0,
FALSE, VALUE_PAIR_DOUBLE);
gtk_grid_attach (GTK_GRID (grid), ifsD->shear_pair->spin, 5, 1, 1, 1);
// GTK_FILL, GTK_FILL, 0, 0);
gtk_widget_show (ifsD->shear_pair->spin);
/* Flip */
ifsD->flip_check_button = gtk_check_button_new_with_label (_("Flip"));
gtk_grid_attach (GTK_GRID (grid), ifsD->flip_check_button, 0, 2, 6, 1);
// GTK_FILL, GTK_FILL, 0, 0);
g_signal_connect (ifsD->flip_check_button, "toggled",
G_CALLBACK (flip_check_button_callback),
NULL);
gtk_widget_show (ifsD->flip_check_button);
return vbox;
}
static GtkWidget *
ifs_compose_color_page (void)
{
GtkWidget *vbox;
GtkWidget *grid;
GtkWidget *label;
GSList *group = NULL;
PikaRGB color;
vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 12);
gtk_container_set_border_width (GTK_CONTAINER (vbox), 12);
grid = gtk_grid_new ();
gtk_grid_set_column_spacing (GTK_GRID (grid), 12);
gtk_grid_set_row_spacing (GTK_GRID (grid), 6);
gtk_box_pack_start (GTK_BOX (vbox), grid, FALSE, FALSE, 0);
gtk_widget_show (grid);
/* Simple color control section */
ifsD->simple_button = gtk_radio_button_new_with_label (group, _("Simple"));
gtk_grid_attach (GTK_GRID (grid), ifsD->simple_button, 0, 0, 1, 2);
// GTK_FILL, GTK_FILL, 0, 0);
group = gtk_radio_button_get_group (GTK_RADIO_BUTTON (ifsD->simple_button));
g_signal_connect (ifsD->simple_button, "toggled",
G_CALLBACK (simple_color_toggled),
NULL);
gtk_widget_show (ifsD->simple_button);
ifsD->target_cmap = color_map_create (_("IFS Fractal: Target"), NULL,
&ifsD->current_vals.target_color, TRUE);
gtk_grid_attach (GTK_GRID (grid), ifsD->target_cmap->hbox, 1, 0, 1, 2);
// GTK_FILL, 0, 0, 0);
gtk_widget_show (ifsD->target_cmap->hbox);
label = gtk_label_new (_("Scale hue by:"));
gtk_label_set_xalign (GTK_LABEL (label), 0.0);
gtk_grid_attach (GTK_GRID (grid), label, 2, 0, 1, 1);
// GTK_FILL, GTK_FILL, 0, 0);
gtk_widget_show (label);
ifsD->hue_scale_pair = value_pair_create (&ifsD->current_vals.hue_scale,
0.0, 1.0, TRUE, VALUE_PAIR_DOUBLE);
gtk_grid_attach (GTK_GRID (grid), ifsD->hue_scale_pair->scale, 3, 0, 1, 1);
// GTK_FILL, GTK_FILL, 0, 0);
gtk_widget_show (ifsD->hue_scale_pair->scale);
gtk_grid_attach (GTK_GRID (grid), ifsD->hue_scale_pair->spin, 4, 0, 1, 1);
// GTK_FILL, GTK_FILL, 0, 0);
gtk_widget_show (ifsD->hue_scale_pair->spin);
label = gtk_label_new (_("Scale value by:"));
gtk_label_set_xalign (GTK_LABEL (label), 0.0);
gtk_grid_attach (GTK_GRID (grid), label, 2, 1, 1, 1);
// GTK_FILL, GTK_FILL, 0, 0);
gtk_widget_show (label);
ifsD->value_scale_pair = value_pair_create (&ifsD->current_vals.value_scale,
0.0, 1.0, TRUE, VALUE_PAIR_DOUBLE);
gtk_grid_attach (GTK_GRID (grid), ifsD->value_scale_pair->scale, 3, 1, 1, 1);
// GTK_FILL, GTK_FILL, 0, 0);
gtk_widget_show (ifsD->value_scale_pair->scale);
gtk_grid_attach (GTK_GRID (grid), ifsD->value_scale_pair->spin, 4, 1, 1, 1);
// GTK_FILL, GTK_FILL, 0, 0);
gtk_widget_show (ifsD->value_scale_pair->spin);
/* Full color control section */
ifsD->full_button = gtk_radio_button_new_with_label (group, _("Full"));
gtk_grid_attach (GTK_GRID (grid), ifsD->full_button, 0, 2, 1, 1);
// GTK_FILL, GTK_FILL, 0, 0);
group = gtk_radio_button_get_group (GTK_RADIO_BUTTON (ifsD->full_button));
gtk_widget_show (ifsD->full_button);
pika_rgb_parse_name (&color, "red", -1);
pika_rgb_set_alpha (&color, 1.0);
ifsD->red_cmap = color_map_create (_("IFS Fractal: Red"), &color,
&ifsD->current_vals.red_color, FALSE);
gtk_grid_attach (GTK_GRID (grid), ifsD->red_cmap->hbox, 1, 2, 1, 1);
// GTK_FILL, GTK_FILL, 0, 0);
gtk_widget_show (ifsD->red_cmap->hbox);
pika_rgb_parse_name (&color, "green", -1);
pika_rgb_set_alpha (&color, 1.0);
ifsD->green_cmap = color_map_create (_("IFS Fractal: Green"), &color,
&ifsD->current_vals.green_color, FALSE);
gtk_grid_attach (GTK_GRID (grid), ifsD->green_cmap->hbox, 2, 2, 1, 1);
// GTK_FILL, GTK_FILL, 0, 0);
gtk_widget_show (ifsD->green_cmap->hbox);
pika_rgb_parse_name (&color, "blue", -1);
pika_rgb_set_alpha (&color, 1.0);
ifsD->blue_cmap = color_map_create (_("IFS Fractal: Blue"), &color,
&ifsD->current_vals.blue_color, FALSE);
gtk_grid_attach (GTK_GRID (grid), ifsD->blue_cmap->hbox, 3, 2, 1, 1);
// GTK_FILL, GTK_FILL, 0, 0);
gtk_widget_show (ifsD->blue_cmap->hbox);
pika_rgb_parse_name (&color, "black", -1);
pika_rgb_set_alpha (&color, 1.0);
ifsD->black_cmap = color_map_create (_("IFS Fractal: Black"), &color,
&ifsD->current_vals.black_color, FALSE);
gtk_grid_attach (GTK_GRID (grid), ifsD->black_cmap->hbox, 4, 2, 1, 1);
// GTK_FILL, GTK_FILL, 0, 0);
gtk_widget_show (ifsD->black_cmap->hbox);
return vbox;
}
static void
on_app_activate (GApplication *gapp,
gpointer user_data)
{
PikaIfs *ifs = PIKA_IFS (user_data);
ifs_compose_dialog (ifs, ifs->drawable);
gtk_application_set_accels_for_action (ifs->app, "app.transform::move", (const char*[]) { "M", NULL });
gtk_application_set_accels_for_action (ifs->app, "app.transform::rotate", (const char*[]) { "R", NULL });
gtk_application_set_accels_for_action (ifs->app, "app.transform::stretch", (const char*[]) { "S", NULL });
gtk_application_set_accels_for_action (ifs->app, "app.new", (const char*[]) { "<control>N", NULL });
gtk_application_set_accels_for_action (ifs->app, "app.delete", (const char*[]) { "<control>D", NULL });
gtk_application_set_accels_for_action (ifs->app, "app.undo", (const char*[]) { "<control>Z", NULL });
gtk_application_set_accels_for_action (ifs->app, "app.redo", (const char*[]) { "<control>Y", NULL });
gtk_application_set_accels_for_action (ifs->app, "app.select-all", (const char*[]) { "<control>A", NULL });
gtk_application_set_accels_for_action (ifs->app, "app.center", (const char*[]) {"<control>C", NULL });
gtk_application_set_accels_for_action (ifs->app, "app.options", (const char*[]) { NULL });
}
static gint
ifs_compose_dialog (PikaIfs *ifs,
PikaDrawable *drawable)
{
GtkWidget *label;
GtkWidget *vbox;
GtkWidget *hbox;
GtkWidget *main_vbox;
GtkWidget *toolbar;
GtkWidget *aspect_frame;
GtkWidget *notebook;
GtkWidget *page;
gint design_width = pika_drawable_get_width (drawable);
gint design_height = pika_drawable_get_height (drawable);
if (design_width > design_height)
{
if (design_width > DESIGN_AREA_MAX_SIZE)
{
design_height = design_height * DESIGN_AREA_MAX_SIZE / design_width;
design_width = DESIGN_AREA_MAX_SIZE;
}
}
else
{
if (design_height > DESIGN_AREA_MAX_SIZE)
{
design_width = design_width * DESIGN_AREA_MAX_SIZE / design_height;
design_height = DESIGN_AREA_MAX_SIZE;
}
}
ifsD = g_new0 (IfsDialog, 1);
ifsD->drawable_width = pika_drawable_get_width (drawable);
ifsD->drawable_height = pika_drawable_get_height (drawable);
ifsD->preview_width = design_width;
ifsD->preview_height = design_height;
pika_ui_init (PLUG_IN_BINARY);
ifs->dialog = pika_dialog_new (_("IFS Fractal"), PLUG_IN_ROLE,
NULL, 0,
pika_standard_help_func, PLUG_IN_PROC,
_("_Open"), RESPONSE_OPEN,
_("_Save"), RESPONSE_SAVE,
_("_Reset"), RESPONSE_RESET,
_("_Cancel"), GTK_RESPONSE_CANCEL,
_("_OK"), GTK_RESPONSE_OK,
NULL);
pika_dialog_set_alternative_button_order (GTK_DIALOG (ifs->dialog),
RESPONSE_OPEN,
RESPONSE_SAVE,
RESPONSE_RESET,
GTK_RESPONSE_OK,
GTK_RESPONSE_CANCEL,
-1);
gtk_window_set_application (GTK_WINDOW (ifs->dialog), ifs->app);
pika_window_set_transient (GTK_WINDOW (ifs->dialog));
g_object_add_weak_pointer (G_OBJECT (ifs->dialog), (gpointer) &ifs->dialog);
g_signal_connect (ifs->dialog, "response",
G_CALLBACK (ifs_compose_response),
NULL);
g_signal_connect (GTK_WINDOW (ifs->dialog), "destroy",
G_CALLBACK (window_destroy),
NULL);
g_action_map_add_action_entries (G_ACTION_MAP (ifs->app),
ACTIONS, G_N_ELEMENTS (ACTIONS),
ifs);
/* The main vbox */
main_vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 12);
gtk_container_set_border_width (GTK_CONTAINER (main_vbox), 12);
gtk_box_pack_start (GTK_BOX (gtk_dialog_get_content_area (GTK_DIALOG (ifs->dialog))),
main_vbox, TRUE, TRUE, 0);
toolbar = gtk_toolbar_new ();
add_toggle_button (toolbar, "app.transform::move", PIKA_ICON_TOOL_MOVE,
NULL, _("Move"));
add_toggle_button (toolbar, "app.transform::rotate", PIKA_ICON_TOOL_ROTATE,
NULL, _("Rotate"));
add_toggle_button (toolbar, "app.transform::stretch", PIKA_ICON_TOOL_PERSPECTIVE,
NULL, _("Stretch"));
add_tool_separator (toolbar, FALSE);
add_tool_button (toolbar, "app.new", PIKA_ICON_DOCUMENT_NEW,
NULL, _("New"));
ifs->delete_button = add_tool_button (toolbar, "app.delete", PIKA_ICON_EDIT_DELETE,
NULL, _("Delete"));
ifs->undo_button = add_tool_button (toolbar, "app.undo", PIKA_ICON_EDIT_UNDO,
NULL, _("Undo"));
ifs->redo_button = add_tool_button (toolbar, "app.redo", PIKA_ICON_EDIT_REDO,
NULL, _("Redo"));
add_tool_button (toolbar, "app.select-all", PIKA_ICON_SELECTION_ALL,
NULL, _("Select All"));
add_tool_button (toolbar, "app.center", PIKA_ICON_CENTER,
NULL, _("Recompute Center"));
add_tool_separator (toolbar, FALSE);
add_tool_button (toolbar, "app.options", PIKA_ICON_PREFERENCES_SYSTEM,
NULL, _("Render Options"));
gtk_box_pack_start (GTK_BOX (main_vbox), toolbar, FALSE, FALSE, 0);
gtk_widget_show (toolbar);
design_area_create (ifs, ifs->dialog, design_width, design_height);
/* The design area */
hbox = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 12);
gtk_box_pack_start (GTK_BOX (main_vbox), hbox, FALSE, FALSE, 0);
aspect_frame = gtk_aspect_frame_new (NULL,
0.5, 0.5,
(gdouble) design_width / design_height,
0);
gtk_frame_set_shadow_type (GTK_FRAME (aspect_frame), GTK_SHADOW_IN);
gtk_box_pack_start (GTK_BOX (hbox), aspect_frame, TRUE, TRUE, 0);
gtk_widget_show (aspect_frame);
gtk_container_add (GTK_CONTAINER (aspect_frame), ifsDesign->area);
gtk_widget_show (ifsDesign->area);
/* The Preview */
aspect_frame = gtk_aspect_frame_new (NULL,
0.5, 0.5,
(gdouble) design_width / design_height,
0);
gtk_frame_set_shadow_type (GTK_FRAME (aspect_frame), GTK_SHADOW_IN);
gtk_box_pack_start (GTK_BOX (hbox), aspect_frame, TRUE, TRUE, 0);
ifsD->preview = pika_preview_area_new ();
gtk_widget_set_size_request (ifsD->preview,
ifsD->preview_width,
ifsD->preview_height);
gtk_container_add (GTK_CONTAINER (aspect_frame), ifsD->preview);
gtk_widget_show (ifsD->preview);
gtk_widget_show (aspect_frame);
gtk_widget_show (hbox);
/* The current transformation frame */
ifsD->current_frame = pika_frame_new (NULL);
gtk_box_pack_start (GTK_BOX (main_vbox), ifsD->current_frame,
FALSE, FALSE, 0);
vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 6);
gtk_container_add (GTK_CONTAINER (ifsD->current_frame), vbox);
/* The notebook */
notebook = gtk_notebook_new ();
gtk_notebook_set_tab_pos (GTK_NOTEBOOK (notebook), GTK_POS_TOP);
gtk_box_pack_start (GTK_BOX (vbox), notebook, FALSE, FALSE, 0);
gtk_widget_show (notebook);
page = ifs_compose_trans_page ();
label = gtk_label_new (_("Spatial Transformation"));
gtk_label_set_xalign (GTK_LABEL (label), 0.5);
gtk_notebook_append_page (GTK_NOTEBOOK (notebook), page, label);
gtk_widget_show (page);
page = ifs_compose_color_page ();
label = gtk_label_new (_("Color Transformation"));
gtk_label_set_xalign (GTK_LABEL (label), 0.5);
gtk_notebook_append_page (GTK_NOTEBOOK (notebook), page, label);
gtk_widget_show (page);
/* The probability entry */
hbox = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 6);
gtk_box_pack_start (GTK_BOX (vbox), hbox, FALSE, FALSE, 0);
label = gtk_label_new (_("Relative probability:"));
gtk_label_set_xalign (GTK_LABEL (label), 0.0);
gtk_box_pack_start (GTK_BOX (hbox), label, FALSE, FALSE, 0);
gtk_widget_show (label);
ifsD->prob_pair = value_pair_create (&ifsD->current_vals.prob, 0.0, 5.0, TRUE,
VALUE_PAIR_DOUBLE);
gtk_box_pack_start (GTK_BOX (hbox), ifsD->prob_pair->scale, TRUE, TRUE, 0);
gtk_widget_show (ifsD->prob_pair->scale);
gtk_box_pack_start (GTK_BOX (hbox), ifsD->prob_pair->spin, FALSE, TRUE, 0);
gtk_widget_show (ifsD->prob_pair->spin);
gtk_widget_show (hbox);
gtk_widget_show (vbox);
gtk_widget_show (ifsD->current_frame);
gtk_widget_show (main_vbox);
if (ifsvals.num_elements == 0)
{
ifs_compose_set_defaults ();
}
else
{
gint i;
gdouble ratio = (gdouble) ifsD->drawable_height / ifsD->drawable_width;
element_selected = g_new (gint, ifsvals.num_elements);
element_selected[0] = TRUE;
for (i = 1; i < ifsvals.num_elements; i++)
element_selected[i] = FALSE;
if (ratio != ifsvals.aspect_ratio)
{
/* Adjust things so that what fit onto the old image, fits
onto the new image */
Aff2 t1, t2, t3;
gdouble x_offset, y_offset;
gdouble center_x, center_y;
gdouble scale;
if (ratio < ifsvals.aspect_ratio)
{
scale = ratio/ifsvals.aspect_ratio;
x_offset = (1-scale)/2;
y_offset = 0;
}
else
{
scale = 1;
x_offset = 0;
y_offset = (ratio - ifsvals.aspect_ratio)/2;
}
aff2_scale (&t1, scale, 0);
aff2_translate (&t2, x_offset, y_offset);
aff2_compose (&t3, &t2, &t1);
aff2_invert (&t1, &t3);
aff2_apply (&t3, ifsvals.center_x, ifsvals.center_y, &center_x,
&center_y);
for (i = 0; i < ifsvals.num_elements; i++)
{
aff_element_compute_trans (elements[i],1, ifsvals.aspect_ratio,
ifsvals.center_x, ifsvals.center_y);
aff2_compose (&t2, &elements[i]->trans, &t1);
aff2_compose (&elements[i]->trans, &t3, &t2);
aff_element_decompose_trans (elements[i],&elements[i]->trans,
1, ifsvals.aspect_ratio,
center_x, center_y);
}
ifsvals.center_x = center_x;
ifsvals.center_y = center_y;
ifsvals.aspect_ratio = ratio;
}
for (i = 0; i < ifsvals.num_elements; i++)
aff_element_compute_color_trans (elements[i]);
/* boundary and spatial transformations will be computed
when the design_area gets a ConfigureNotify event */
set_current_element (0);
ifsD->selected_orig = g_new (AffElement, ifsvals.num_elements);
}
gtk_widget_show (GTK_WIDGET (ifs->dialog));
ifs_compose_preview ();
return ifscint.run;
}
static void
design_area_create (PikaIfs *ifs,
GtkWidget *window,
gint design_width,
gint design_height)
{
ifsDesign = g_new0 (IfsDesignArea, 1);
ifsDesign->op = OP_TRANSLATE;
ifsDesign->area = gtk_drawing_area_new ();
gtk_widget_set_size_request (ifsDesign->area, design_width, design_height);
g_signal_connect (ifsDesign->area, "realize",
G_CALLBACK (design_area_realize),
NULL);
g_signal_connect (ifsDesign->area, "draw",
G_CALLBACK (design_area_draw),
NULL);
g_signal_connect (ifsDesign->area, "button-press-event",
G_CALLBACK (design_area_button_press),
ifs);
g_signal_connect (ifsDesign->area, "button-release-event",
G_CALLBACK (design_area_button_release),
NULL);
g_signal_connect (ifsDesign->area, "motion-notify-event",
G_CALLBACK (design_area_motion),
NULL);
g_signal_connect (ifsDesign->area, "size-allocate",
G_CALLBACK (design_area_size_allocate),
NULL);
gtk_widget_set_events (ifsDesign->area,
GDK_EXPOSURE_MASK |
GDK_BUTTON_PRESS_MASK |
GDK_BUTTON_RELEASE_MASK |
GDK_POINTER_MOTION_MASK |
GDK_POINTER_MOTION_HINT_MASK);
design_op_actions_update ();
}
static void
design_op_actions_update (void)
{
GAction *action;
action = g_action_map_lookup_action (G_ACTION_MAP (ifs->app), "undo");
g_simple_action_set_enabled (G_SIMPLE_ACTION (action),
undo_cur >= 0);
action = g_action_map_lookup_action (G_ACTION_MAP (ifs->app), "redo");
g_simple_action_set_enabled (G_SIMPLE_ACTION (action),
undo_cur != undo_num - 1);
action = g_action_map_lookup_action (G_ACTION_MAP (ifs->app), "delete");
g_simple_action_set_enabled (G_SIMPLE_ACTION (action),
ifsvals.num_elements > 2);
}
static void
ifs_options_dialog (void)
{
if (!ifsOptD)
{
GtkWidget *grid;
GtkWidget *label;
ifsOptD = g_new0 (IfsOptionsDialog, 1);
ifsOptD->dialog =
pika_dialog_new (_("IFS Fractal Render Options"), PLUG_IN_ROLE,
NULL, 0,
pika_standard_help_func, PLUG_IN_PROC,
_("_Close"), GTK_RESPONSE_CLOSE,
NULL);
g_signal_connect (ifsOptD->dialog, "response",
G_CALLBACK (gtk_widget_hide),
NULL);
/* Grid of options */
grid = gtk_grid_new ();
gtk_container_set_border_width (GTK_CONTAINER (grid), 12);
gtk_grid_set_row_spacing (GTK_GRID (grid), 6);
gtk_grid_set_column_spacing (GTK_GRID (grid), 6);
gtk_box_pack_start (GTK_BOX (gtk_dialog_get_content_area (GTK_DIALOG (ifsOptD->dialog))),
grid, FALSE, FALSE, 0);
gtk_widget_show (grid);
label = gtk_label_new (_("Max. memory:"));
gtk_label_set_xalign (GTK_LABEL (label), 0.0);
gtk_grid_attach (GTK_GRID (grid), label, 0, 0, 1, 1);
// GTK_FILL, GTK_FILL, 0, 0);
gtk_widget_show (label);
ifsOptD->memory_pair = value_pair_create (&ifsvals.max_memory,
1, 1000000, FALSE,
VALUE_PAIR_INT);
gtk_grid_attach (GTK_GRID (grid), ifsOptD->memory_pair->spin, 1, 0, 1, 1);
// GTK_FILL, GTK_FILL, 0, 0);
gtk_widget_show (ifsOptD->memory_pair->spin);
label = gtk_label_new (_("Iterations:"));
gtk_label_set_xalign (GTK_LABEL (label), 0.0);
gtk_grid_attach (GTK_GRID (grid), label, 0, 1, 1, 1);
// GTK_FILL, GTK_FILL, 0, 0);
gtk_widget_show (label);
ifsOptD->iterations_pair = value_pair_create (&ifsvals.iterations,
1, 10000000, FALSE,
VALUE_PAIR_INT);
gtk_grid_attach (GTK_GRID (grid), ifsOptD->iterations_pair->spin,
1, 1, 1, 1);
// GTK_FILL, GTK_FILL, 0, 0);
gtk_widget_show (ifsOptD->iterations_pair->spin);
gtk_widget_show (label);
label = gtk_label_new (_("Subdivide:"));
gtk_label_set_xalign (GTK_LABEL (label), 0.0);
gtk_grid_attach (GTK_GRID (grid), label, 0, 2, 1, 1);
// GTK_FILL, GTK_FILL, 0, 0);
gtk_widget_show (label);
ifsOptD->subdivide_pair = value_pair_create (&ifsvals.subdivide,
1, 10, FALSE,
VALUE_PAIR_INT);
gtk_grid_attach (GTK_GRID (grid), ifsOptD->subdivide_pair->spin,
1, 2, 1, 1);
// GTK_FILL, GTK_FILL, 0, 0);
gtk_widget_show (ifsOptD->subdivide_pair->spin);
label = gtk_label_new (_("Spot radius:"));
gtk_label_set_xalign (GTK_LABEL (label), 0.0);
gtk_grid_attach (GTK_GRID (grid), label, 0, 3, 1, 1);
// GTK_FILL, GTK_FILL, 0, 0);
gtk_widget_show (label);
ifsOptD->radius_pair = value_pair_create (&ifsvals.radius,
0, 5, TRUE,
VALUE_PAIR_DOUBLE);
gtk_grid_attach (GTK_GRID (grid), ifsOptD->radius_pair->scale,
1, 3, 1, 1);
// GTK_FILL, GTK_FILL, 0, 0);
gtk_widget_show (ifsOptD->radius_pair->scale);
gtk_grid_attach (GTK_GRID (grid), ifsOptD->radius_pair->spin, 2, 3, 1, 1);
// GTK_FILL, GTK_FILL, 0, 0);
gtk_widget_show (ifsOptD->radius_pair->spin);
value_pair_update (ifsOptD->iterations_pair);
value_pair_update (ifsOptD->subdivide_pair);
value_pair_update (ifsOptD->memory_pair);
value_pair_update (ifsOptD->radius_pair);
gtk_widget_show (ifsOptD->dialog);
}
else
{
gtk_window_present (GTK_WINDOW (ifsOptD->dialog));
}
}
static void
ifs_compose (PikaDrawable *drawable)
{
GeglBuffer *buffer = pika_drawable_get_shadow_buffer (drawable);
gint width = pika_drawable_get_width (drawable);
gint height = pika_drawable_get_height (drawable);
gboolean alpha = pika_drawable_has_alpha (drawable);
const Babl *format;
gint num_bands;
gint band_height;
gint band_y;
gint band_no;
gint i, j;
guchar *data;
guchar *mask = NULL;
guchar *nhits;
guchar rc, gc, bc;
PikaRGB color;
if (alpha)
format = babl_format ("R'G'B'A u8");
else
format = babl_format ("R'G'B' u8");
num_bands = ceil ((gdouble) (width * height * SQR (ifsvals.subdivide) * 5)
/ (1024 * ifsvals.max_memory));
band_height = (height + num_bands - 1) / num_bands;
if (band_height > height)
band_height = height;
mask = g_new (guchar, width * band_height * SQR (ifsvals.subdivide));
data = g_new (guchar, width * band_height * SQR (ifsvals.subdivide) * 3);
nhits = g_new (guchar, width * band_height * SQR (ifsvals.subdivide));
pika_context_get_background (&color);
pika_rgb_get_uchar (&color, &rc, &gc, &bc);
for (band_no = 0, band_y = 0; band_no < num_bands; band_no++)
{
GeglBufferIterator *iter;
GeglRectangle *roi;
pika_progress_init_printf (_("Rendering IFS (%d/%d)"),
band_no + 1, num_bands);
/* render the band to a buffer */
if (band_y + band_height > height)
band_height = height - band_y;
/* we don't need to clear data since we store nhits */
memset (mask, 0, width * band_height * SQR (ifsvals.subdivide));
memset (nhits, 0, width * band_height * SQR (ifsvals.subdivide));
ifs_render (elements,
ifsvals.num_elements, width, height, ifsvals.iterations,
&ifsvals, band_y, band_height, data, mask, nhits, FALSE);
/* transfer the image to the drawable */
iter = gegl_buffer_iterator_new (buffer,
GEGL_RECTANGLE (0, band_y,
width, band_height), 0,
format,
GEGL_ACCESS_WRITE, GEGL_ABYSS_NONE, 1);
roi = &iter->items[0].roi;
while (gegl_buffer_iterator_next (iter))
{
guchar *destrow = iter->items[0].data;
for (j = roi->y; j < (roi->y + roi->height); j++)
{
guchar *dest = destrow;
for (i = roi->x; i < (roi->x + roi->width); i++)
{
/* Accumulate a reduced pixel */
gint rtot = 0;
gint btot = 0;
gint gtot = 0;
gint mtot = 0;
gint ii, jj;
for (jj = 0; jj < ifsvals.subdivide; jj++)
{
guchar *ptr;
guchar *maskptr;
ptr = data +
3 * (((j - band_y) * ifsvals.subdivide + jj) *
ifsvals.subdivide * width +
i * ifsvals.subdivide);
maskptr = mask +
((j - band_y) * ifsvals.subdivide + jj) *
ifsvals.subdivide * width +
i * ifsvals.subdivide;
for (ii = 0; ii < ifsvals.subdivide; ii++)
{
guchar maskval = *maskptr++;
mtot += maskval;
rtot += maskval* *ptr++;
gtot += maskval* *ptr++;
btot += maskval* *ptr++;
}
}
if (mtot)
{
rtot /= mtot;
gtot /= mtot;
btot /= mtot;
mtot /= SQR (ifsvals.subdivide);
}
if (alpha)
{
*dest++ = rtot;
*dest++ = gtot;
*dest++ = btot;
*dest++ = mtot;
}
else
{
*dest++ = (mtot * rtot + (255 - mtot) * rc) / 255;
*dest++ = (mtot * gtot + (255 - mtot) * gc) / 255;
*dest++ = (mtot * btot + (255 - mtot) * bc) / 255;
}
}
if (alpha)
destrow += roi->width * 4;
else
destrow += roi->width * 3;
}
}
band_y += band_height;
}
g_free (mask);
g_free (data);
g_free (nhits);
g_object_unref (buffer);
pika_drawable_merge_shadow (drawable, TRUE);
pika_drawable_update (drawable, 0, 0, width, height);
}
static void
update_values (void)
{
ifsD->in_update = TRUE;
ifsD->current_vals = elements[ifsD->current_element]->v;
ifsD->current_vals.theta *= 180/G_PI;
value_pair_update (ifsD->prob_pair);
value_pair_update (ifsD->x_pair);
value_pair_update (ifsD->y_pair);
value_pair_update (ifsD->scale_pair);
value_pair_update (ifsD->angle_pair);
value_pair_update (ifsD->asym_pair);
value_pair_update (ifsD->shear_pair);
color_map_update (ifsD->red_cmap);
color_map_update (ifsD->green_cmap);
color_map_update (ifsD->blue_cmap);
color_map_update (ifsD->black_cmap);
color_map_update (ifsD->target_cmap);
value_pair_update (ifsD->hue_scale_pair);
value_pair_update (ifsD->value_scale_pair);
if (elements[ifsD->current_element]->v.simple_color)
gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (ifsD->simple_button),
TRUE);
else
gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (ifsD->full_button),
TRUE);
gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (ifsD->flip_check_button),
elements[ifsD->current_element]->v.flip);
ifsD->in_update = FALSE;
simple_color_set_sensitive ();
}
static void
set_current_element (gint index)
{
gchar *frame_name = g_strdup_printf (_("Transformation %s"),
elements[index]->name);
ifsD->current_element = index;
gtk_frame_set_label (GTK_FRAME (ifsD->current_frame),frame_name);
g_free (frame_name);
update_values ();
}
static void
design_area_realize (GtkWidget *widget)
{
const gint cursors[3] =
{
GDK_FLEUR, /* OP_TRANSLATE */
GDK_EXCHANGE, /* OP_ROTATE */
GDK_CROSSHAIR /* OP_SHEAR */
};
GdkDisplay *display = gtk_widget_get_display (widget);
GdkCursor *cursor = gdk_cursor_new_for_display (display,
cursors[ifsDesign->op]);
gdk_window_set_cursor (gtk_widget_get_window (widget), cursor);
g_object_unref (cursor);
}
static gboolean
design_area_draw (GtkWidget *widget,
cairo_t *cr)
{
cairo_t *design_cr;
GtkAllocation allocation;
PangoLayout *layout;
GdkRGBA black = { 0.0, 0.0, 0.0, 1.0 };
GdkRGBA white = { 1.0, 1.0, 1.0, 1.0 };
gint i;
gint cx, cy;
gtk_widget_get_allocation (widget, &allocation);
design_cr = cairo_create (ifsDesign->surface);
gdk_cairo_set_source_rgba (design_cr, &white);
cairo_paint (design_cr);
cairo_set_line_join (design_cr, CAIRO_LINE_JOIN_ROUND);
cairo_set_line_cap (design_cr, CAIRO_LINE_CAP_ROUND);
cairo_translate (design_cr, 0.5, 0.5);
/* draw an indicator for the center */
cx = ifsvals.center_x * allocation.width;
cy = ifsvals.center_y * allocation.width;
cairo_move_to (design_cr, cx - 10, cy);
cairo_line_to (design_cr, cx + 10, cy);
cairo_move_to (design_cr, cx, cy - 10);
cairo_line_to (design_cr, cx, cy + 10);
gdk_cairo_set_source_rgba (design_cr, &black);
cairo_set_line_width (design_cr, 1.0);
cairo_stroke (design_cr);
layout = gtk_widget_create_pango_layout (widget, NULL);
for (i = 0; i < ifsvals.num_elements; i++)
{
aff_element_draw (elements[i], element_selected[i],
allocation.width,
allocation.height,
design_cr,
&black,
layout);
}
g_object_unref (layout);
cairo_destroy (design_cr);
cairo_set_source_surface (cr, ifsDesign->surface, 0.0, 0.0);
cairo_paint (cr);
return FALSE;
}
static void
design_area_size_allocate (GtkWidget *widget,
GtkAllocation *allocation)
{
gint i;
for (i = 0; i < ifsvals.num_elements; i++)
aff_element_compute_trans (elements[i],
allocation->width, allocation->height,
ifsvals.center_x, ifsvals.center_y);
for (i = 0; i < ifsvals.num_elements; i++)
aff_element_compute_boundary (elements[i],
allocation->width, allocation->height,
elements, ifsvals.num_elements);
if (ifsDesign->surface)
cairo_surface_destroy (ifsDesign->surface);
ifsDesign->surface = cairo_image_surface_create (CAIRO_FORMAT_RGB24,
allocation->width,
allocation->height);
}
static gint
design_area_button_press (GtkWidget *widget,
GdkEventButton *event,
PikaIfs *ifs)
{
GtkAllocation allocation;
gint i;
gint old_current;
gtk_widget_get_allocation (ifsDesign->area, &allocation);
if (gdk_event_triggers_context_menu ((GdkEvent *) event))
{
GtkWidget *menu;
GMenuModel *model;
model = G_MENU_MODEL (gtk_builder_get_object (ifs->builder, "ifs-compose-menu"));
menu = gtk_menu_new_from_model (model);
if (GTK_IS_MENU_ITEM (menu))
menu = gtk_menu_item_get_submenu (GTK_MENU_ITEM (menu));
gtk_menu_attach_to_widget (GTK_MENU (menu), GTK_WIDGET (ifsDesign->area), NULL);
gtk_menu_popup_at_pointer (GTK_MENU (menu), (GdkEvent *) event);
return FALSE;
}
old_current = ifsD->current_element;
ifsD->current_element = -1;
/* Find out where the button press was */
for (i = 0; i < ifsvals.num_elements; i++)
{
if (ipolygon_contains (elements[i]->click_boundary, event->x, event->y))
{
set_current_element (i);
break;
}
}
/* if the user started manipulating an object, set up a new
position on the undo ring */
if (ifsD->current_element >= 0)
undo_begin ();
if (!(event->state & GDK_SHIFT_MASK)
&& ( (ifsD->current_element<0)
|| !element_selected[ifsD->current_element] ))
{
for (i = 0; i < ifsvals.num_elements; i++)
element_selected[i] = FALSE;
}
if (ifsD->current_element >= 0)
{
ifsDesign->button_state |= GDK_BUTTON1_MASK;
element_selected[ifsD->current_element] = TRUE;
ifsDesign->num_selected = 0;
ifsDesign->op_xcenter = 0.0;
ifsDesign->op_ycenter = 0.0;
for (i = 0; i < ifsvals.num_elements; i++)
{
if (element_selected[i])
{
ifsD->selected_orig[i] = *elements[i];
ifsDesign->op_xcenter += elements[i]->v.x;
ifsDesign->op_ycenter += elements[i]->v.y;
ifsDesign->num_selected++;
undo_update (i);
}
}
ifsDesign->op_xcenter /= ifsDesign->num_selected;
ifsDesign->op_ycenter /= ifsDesign->num_selected;
ifsDesign->op_x = (gdouble)event->x / allocation.width;
ifsDesign->op_y = (gdouble)event->y / allocation.width;
ifsDesign->op_center_x = ifsvals.center_x;
ifsDesign->op_center_y = ifsvals.center_y;
}
else
{
ifsD->current_element = old_current;
element_selected[old_current] = TRUE;
}
design_area_redraw ();
return FALSE;
}
static gint
design_area_button_release (GtkWidget *widget,
GdkEventButton *event)
{
if (event->button == 1 &&
(ifsDesign->button_state & GDK_BUTTON1_MASK))
{
ifsDesign->button_state &= ~GDK_BUTTON1_MASK;
ifs_compose_preview ();
}
return FALSE;
}
static gint
design_area_motion (GtkWidget *widget,
GdkEventMotion *event)
{
GtkAllocation allocation;
gint i;
gdouble xo;
gdouble yo;
gdouble xn;
gdouble yn;
Aff2 trans, t1, t2, t3;
if (! (ifsDesign->button_state & GDK_BUTTON1_MASK))
return FALSE;
gtk_widget_get_allocation (ifsDesign->area, &allocation);
xo = (ifsDesign->op_x - ifsDesign->op_xcenter);
yo = (ifsDesign->op_y - ifsDesign->op_ycenter);
xn = (gdouble) event->x / allocation.width - ifsDesign->op_xcenter;
yn = (gdouble) event->y / allocation.width - ifsDesign->op_ycenter;
switch (ifsDesign->op)
{
case OP_ROTATE:
aff2_translate (&t1,-ifsDesign->op_xcenter * allocation.width,
-ifsDesign->op_ycenter * allocation.width);
aff2_scale (&t2,
sqrt((SQR(xn)+SQR(yn))/(SQR(xo)+SQR(yo))),
0);
aff2_compose (&t3, &t2, &t1);
aff2_rotate (&t1, - atan2(yn, xn) + atan2(yo, xo));
aff2_compose (&t2, &t1, &t3);
aff2_translate (&t3, ifsDesign->op_xcenter * allocation.width,
ifsDesign->op_ycenter * allocation.width);
aff2_compose (&trans, &t3, &t2);
break;
case OP_STRETCH:
aff2_translate (&t1,-ifsDesign->op_xcenter * allocation.width,
-ifsDesign->op_ycenter * allocation.width);
aff2_compute_stretch (&t2, xo, yo, xn, yn);
aff2_compose (&t3, &t2, &t1);
aff2_translate (&t1, ifsDesign->op_xcenter * allocation.width,
ifsDesign->op_ycenter * allocation.width);
aff2_compose (&trans, &t1, &t3);
break;
case OP_TRANSLATE:
aff2_translate (&trans,
(xn-xo) * allocation.width,
(yn-yo) * allocation.width);
break;
}
for (i = 0; i < ifsvals.num_elements; i++)
if (element_selected[i])
{
if (ifsDesign->num_selected == ifsvals.num_elements)
{
gdouble cx, cy;
aff2_invert (&t1, &trans);
aff2_compose (&t2, &trans, &ifsD->selected_orig[i].trans);
aff2_compose (&elements[i]->trans, &t2, &t1);
cx = ifsDesign->op_center_x * allocation.width;
cy = ifsDesign->op_center_y * allocation.width;
aff2_apply (&trans, cx, cy, &cx, &cy);
ifsvals.center_x = cx / allocation.width;
ifsvals.center_y = cy / allocation.width;
}
else
{
aff2_compose (&elements[i]->trans, &trans,
&ifsD->selected_orig[i].trans);
}
aff_element_decompose_trans (elements[i],&elements[i]->trans,
allocation.width, allocation.height,
ifsvals.center_x, ifsvals.center_y);
aff_element_compute_trans (elements[i],
allocation.width, allocation.height,
ifsvals.center_x, ifsvals.center_y);
}
update_values ();
design_area_redraw ();
/* Ask for more motion events in case the event was a hint */
gdk_event_request_motions (event);
return FALSE;
}
static void
design_area_redraw (void)
{
GtkAllocation allocation;
gint i;
gtk_widget_get_allocation (ifsDesign->area, &allocation);
for (i = 0; i < ifsvals.num_elements; i++)
aff_element_compute_boundary (elements[i],
allocation.width, allocation.height,
elements, ifsvals.num_elements);
gtk_widget_queue_draw (ifsDesign->area);
}
/* Undo ring functions */
static void
undo_begin (void)
{
gint i, j;
gint to_delete;
gint new_index;
if (undo_cur == UNDO_LEVELS-1)
{
to_delete = 1;
undo_start = (undo_start + 1) % UNDO_LEVELS;
}
else
{
undo_cur++;
to_delete = undo_num - undo_cur;
}
undo_num = undo_num - to_delete + 1;
new_index = (undo_start + undo_cur) % UNDO_LEVELS;
/* remove any redo elements or the oldest element if necessary */
for (j = new_index; to_delete > 0; j = (j+1) % UNDO_LEVELS, to_delete--)
{
for (i = 0; i < undo_ring[j].ifsvals.num_elements; i++)
if (undo_ring[j].elements[i])
aff_element_free (undo_ring[j].elements[i]);
g_free (undo_ring[j].elements);
g_free (undo_ring[j].element_selected);
}
undo_ring[new_index].ifsvals = ifsvals;
undo_ring[new_index].elements = g_new (AffElement *,ifsvals.num_elements);
undo_ring[new_index].element_selected = g_new (gboolean,
ifsvals.num_elements);
undo_ring[new_index].current_element = ifsD->current_element;
for (i = 0; i < ifsvals.num_elements; i++)
{
undo_ring[new_index].elements[i] = NULL;
undo_ring[new_index].element_selected[i] = element_selected[i];
}
design_op_actions_update ();
}
static void
undo_update (gint el)
{
AffElement *elem;
/* initialize */
elem = NULL;
if (!undo_ring[(undo_start + undo_cur) % UNDO_LEVELS].elements[el])
undo_ring[(undo_start + undo_cur) % UNDO_LEVELS].elements[el]
= elem = g_new (AffElement, 1);
*elem = *elements[el];
elem->draw_boundary = NULL;
elem->click_boundary = NULL;
}
static void
undo_exchange (gint el)
{
GtkAllocation allocation;
gint i;
AffElement **telements;
gboolean *tselected;
IfsComposeVals tifsvals;
gint tcurrent;
gtk_widget_get_allocation (ifsDesign->area, &allocation);
/* swap the arrays and values*/
telements = elements;
elements = undo_ring[el].elements;
undo_ring[el].elements = telements;
tifsvals = ifsvals;
ifsvals = undo_ring[el].ifsvals;
undo_ring[el].ifsvals = tifsvals;
tselected = element_selected;
element_selected = undo_ring[el].element_selected;
undo_ring[el].element_selected = tselected;
tcurrent = ifsD->current_element;
ifsD->current_element = undo_ring[el].current_element;
undo_ring[el].current_element = tcurrent;
/* now swap back any unchanged elements */
for (i = 0; i < ifsvals.num_elements; i++)
if (!elements[i])
{
elements[i] = undo_ring[el].elements[i];
undo_ring[el].elements[i] = NULL;
}
else
aff_element_compute_trans (elements[i],
allocation.width, allocation.height,
ifsvals.center_x, ifsvals.center_y);
set_current_element (ifsD->current_element);
design_area_redraw ();
ifs_compose_preview ();
}
static void
undo_action (GSimpleAction *action,
GVariant *parameter,
gpointer user_data)
{
if (undo_cur >= 0)
{
undo_exchange ((undo_start + undo_cur) % UNDO_LEVELS);
undo_cur--;
}
design_op_actions_update ();
}
static void
redo_action (GSimpleAction *action,
GVariant *parameter,
gpointer user_data)
{
if (undo_cur != undo_num - 1)
{
undo_cur++;
undo_exchange ((undo_start + undo_cur) % UNDO_LEVELS);
}
design_op_actions_update ();
}
static void
design_area_select_all_action (GSimpleAction *action,
GVariant *parameter,
gpointer user_data)
{
gint i;
for (i = 0; i < ifsvals.num_elements; i++)
element_selected[i] = TRUE;
design_area_redraw ();
}
/* Interface functions */
static void
val_changed_update (void)
{
GtkAllocation allocation;
AffElement *cur;
if (ifsD->in_update)
return;
gtk_widget_get_allocation (ifsDesign->area, &allocation);
cur = elements[ifsD->current_element];
undo_begin ();
undo_update (ifsD->current_element);
cur->v = ifsD->current_vals;
cur->v.theta *= G_PI/180.0;
aff_element_compute_trans (cur,
allocation.width, allocation.height,
ifsvals.center_x, ifsvals.center_y);
aff_element_compute_color_trans (cur);
design_area_redraw ();
ifs_compose_preview ();
}
/* Pseudo-widget representing a color mapping */
#define COLOR_SAMPLE_SIZE 30
static ColorMap *
color_map_create (const gchar *name,
PikaRGB *orig_color,
PikaRGB *data,
gboolean fixed_point)
{
GtkWidget *frame;
GtkWidget *arrow;
ColorMap *color_map = g_new (ColorMap, 1);
pika_rgb_set_alpha (data, 1.0);
color_map->color = data;
color_map->fixed_point = fixed_point;
color_map->hbox = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 2);
frame = gtk_frame_new (NULL);
gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_IN);
gtk_box_pack_start (GTK_BOX (color_map->hbox), frame, FALSE, FALSE, 0);
gtk_widget_show (frame);
color_map->orig_preview =
pika_color_area_new (fixed_point ? data : orig_color,
PIKA_COLOR_AREA_FLAT, 0);
gtk_drag_dest_unset (color_map->orig_preview);
gtk_widget_set_size_request (color_map->orig_preview,
COLOR_SAMPLE_SIZE, COLOR_SAMPLE_SIZE);
gtk_container_add (GTK_CONTAINER (frame), color_map->orig_preview);
gtk_widget_show (color_map->orig_preview);
arrow = gtk_image_new_from_icon_name ("pan-end-symbolic",
GTK_ICON_SIZE_SMALL_TOOLBAR);
gtk_box_pack_start (GTK_BOX (color_map->hbox), arrow, FALSE, FALSE, 0);
gtk_widget_show (arrow);
color_map->button = pika_color_button_new (name,
COLOR_SAMPLE_SIZE,
COLOR_SAMPLE_SIZE,
data,
PIKA_COLOR_AREA_FLAT);
gtk_box_pack_start (GTK_BOX (color_map->hbox), color_map->button,
FALSE, FALSE, 0);
gtk_widget_show (color_map->button);
g_signal_connect (color_map->button, "color-changed",
G_CALLBACK (pika_color_button_get_color),
data);
g_signal_connect (color_map->button, "color-changed",
G_CALLBACK (color_map_color_changed_cb),
color_map);
return color_map;
}
static void
color_map_color_changed_cb (GtkWidget *widget,
ColorMap *color_map)
{
if (ifsD->in_update)
return;
undo_begin ();
undo_update (ifsD->current_element);
elements[ifsD->current_element]->v = ifsD->current_vals;
elements[ifsD->current_element]->v.theta *= G_PI/180.0;
aff_element_compute_color_trans (elements[ifsD->current_element]);
update_values ();
ifs_compose_preview ();
}
static void
color_map_update (ColorMap *color_map)
{
pika_color_button_set_color (PIKA_COLOR_BUTTON (color_map->button),
color_map->color);
if (color_map->fixed_point)
pika_color_area_set_color (PIKA_COLOR_AREA (color_map->orig_preview),
color_map->color);
}
static void
simple_color_set_sensitive (void)
{
gint sc = elements[ifsD->current_element]->v.simple_color;
gtk_widget_set_sensitive (ifsD->target_cmap->hbox, sc);
gtk_widget_set_sensitive (ifsD->hue_scale_pair->scale, sc);
gtk_widget_set_sensitive (ifsD->hue_scale_pair->spin, sc);
gtk_widget_set_sensitive (ifsD->value_scale_pair->scale, sc);
gtk_widget_set_sensitive (ifsD->value_scale_pair->spin, sc);
gtk_widget_set_sensitive (ifsD->red_cmap->hbox, !sc);
gtk_widget_set_sensitive (ifsD->green_cmap->hbox, !sc);
gtk_widget_set_sensitive (ifsD->blue_cmap->hbox, !sc);
gtk_widget_set_sensitive (ifsD->black_cmap->hbox, !sc);
}
static void
simple_color_toggled (GtkWidget *widget,
gpointer data)
{
AffElement *cur = elements[ifsD->current_element];
cur->v.simple_color = gtk_toggle_button_get_active (GTK_TOGGLE_BUTTON (widget));
ifsD->current_vals.simple_color = cur->v.simple_color;
if (cur->v.simple_color)
aff_element_compute_color_trans (cur);
val_changed_update ();
simple_color_set_sensitive ();
}
/* Generic mechanism for scale/entry combination (possibly without
scale) */
static ValuePair *
value_pair_create (gpointer data,
gdouble lower,
gdouble upper,
gboolean create_scale,
ValuePairType type)
{
ValuePair *value_pair = g_new (ValuePair, 1);
value_pair->data.d = data;
value_pair->type = type;
value_pair->timeout_id = 0;
value_pair->adjustment = gtk_adjustment_new (1.0, lower, upper,
(upper - lower) / 100,
(upper - lower) / 10,
0.0);
value_pair->spin = pika_spin_button_new (value_pair->adjustment, 1.0, 3);
gtk_spin_button_set_numeric (GTK_SPIN_BUTTON (value_pair->spin), TRUE);
gtk_widget_set_size_request (value_pair->spin, 72, -1);
g_signal_connect (value_pair->adjustment, "value-changed",
G_CALLBACK (value_pair_scale_callback),
value_pair);
if (create_scale)
{
value_pair->scale = gtk_scale_new (GTK_ORIENTATION_HORIZONTAL,
value_pair->adjustment);
if (type == VALUE_PAIR_INT)
gtk_scale_set_digits (GTK_SCALE (value_pair->scale), 0);
else
gtk_scale_set_digits (GTK_SCALE (value_pair->scale), 3);
gtk_scale_set_draw_value (GTK_SCALE (value_pair->scale), FALSE);
}
else
{
value_pair->scale = NULL;
}
return value_pair;
}
static void
value_pair_update (ValuePair *value_pair)
{
if (value_pair->type == VALUE_PAIR_INT)
gtk_adjustment_set_value (value_pair->adjustment, *value_pair->data.i);
else
gtk_adjustment_set_value (value_pair->adjustment, *value_pair->data.d);
}
static gboolean
value_pair_scale_callback_real (gpointer data)
{
ValuePair *value_pair = data;
gint changed = FALSE;
if (value_pair->type == VALUE_PAIR_DOUBLE)
{
if ((gdouble) *value_pair->data.d !=
gtk_adjustment_get_value (value_pair->adjustment))
{
changed = TRUE;
*value_pair->data.d = gtk_adjustment_get_value (value_pair->adjustment);
}
}
else
{
if (*value_pair->data.i !=
(gint) gtk_adjustment_get_value (value_pair->adjustment))
{
changed = TRUE;
*value_pair->data.i = gtk_adjustment_get_value (value_pair->adjustment);
}
}
if (changed)
val_changed_update ();
value_pair->timeout_id = 0;
return FALSE;
}
static void
value_pair_scale_callback (GtkAdjustment *adjustment,
ValuePair *value_pair)
{
if (value_pair->timeout_id != 0)
return;
value_pair->timeout_id = g_timeout_add (500, /* update every half second */
value_pair_scale_callback_real,
value_pair);
}
static void
recompute_center_action (GSimpleAction *action,
GVariant *parameter,
gpointer user_data)
{
recompute_center (TRUE);
}
static void
recompute_center (gboolean save_undo)
{
GtkAllocation allocation;
gint i;
gdouble x, y;
gdouble center_x = 0.0;
gdouble center_y = 0.0;
gtk_widget_get_allocation (ifsDesign->area, &allocation);
if (save_undo)
undo_begin ();
for (i = 0; i < ifsvals.num_elements; i++)
{
if (save_undo)
undo_update (i);
aff_element_compute_trans (elements[i],1, ifsvals.aspect_ratio,
ifsvals.center_x, ifsvals.center_y);
aff2_fixed_point (&elements[i]->trans, &x, &y);
center_x += x;
center_y += y;
}
ifsvals.center_x = center_x/ifsvals.num_elements;
ifsvals.center_y = center_y/ifsvals.num_elements;
for (i = 0; i < ifsvals.num_elements; i++)
{
aff_element_decompose_trans (elements[i],&elements[i]->trans,
1, ifsvals.aspect_ratio,
ifsvals.center_x, ifsvals.center_y);
}
if (allocation.width > 1 && allocation.height > 1)
{
for (i = 0; i < ifsvals.num_elements; i++)
aff_element_compute_trans (elements[i],
allocation.width, allocation.height,
ifsvals.center_x, ifsvals.center_y);
design_area_redraw ();
update_values ();
}
}
static void
flip_check_button_callback (GtkWidget *widget,
gpointer data)
{
GtkAllocation allocation;
guint i;
gboolean active;
if (ifsD->in_update)
return;
gtk_widget_get_allocation (ifsDesign->area, &allocation);
active = gtk_toggle_button_get_active (GTK_TOGGLE_BUTTON (widget));
undo_begin ();
for (i = 0; i < ifsvals.num_elements; i++)
{
if (element_selected[i])
{
undo_update (i);
elements[i]->v.flip = active;
aff_element_compute_trans (elements[i],
allocation.width, allocation.height,
ifsvals.center_x, ifsvals.center_y);
}
}
update_values ();
design_area_redraw ();
ifs_compose_preview ();
}
static void
ifs_compose_set_defaults (void)
{
gint i;
PikaRGB color;
pika_context_get_foreground (&color);
ifsvals.aspect_ratio =
(gdouble)ifsD->drawable_height / ifsD->drawable_width;
for (i = 0; i < ifsvals.num_elements; i++)
aff_element_free (elements[i]);
count_for_naming = 0;
ifsvals.num_elements = 3;
elements = g_realloc (elements, ifsvals.num_elements * sizeof(AffElement *));
element_selected = g_realloc (element_selected,
ifsvals.num_elements * sizeof(gboolean));
elements[0] = aff_element_new (0.3, 0.37 * ifsvals.aspect_ratio, &color,
++count_for_naming);
element_selected[0] = FALSE;
elements[1] = aff_element_new (0.7, 0.37 * ifsvals.aspect_ratio, &color,
++count_for_naming);
element_selected[1] = FALSE;
elements[2] = aff_element_new (0.5, 0.7 * ifsvals.aspect_ratio, &color,
++count_for_naming);
element_selected[2] = FALSE;
ifsvals.center_x = 0.5;
ifsvals.center_y = 0.5 * ifsvals.aspect_ratio;
ifsvals.iterations = ifsD->drawable_height * ifsD->drawable_width;
ifsvals.subdivide = 3;
ifsvals.max_memory = 4096;
if (ifsOptD)
{
value_pair_update (ifsOptD->iterations_pair);
value_pair_update (ifsOptD->subdivide_pair);
value_pair_update (ifsOptD->radius_pair);
value_pair_update (ifsOptD->memory_pair);
}
ifsvals.radius = 0.7;
set_current_element (0);
element_selected[0] = TRUE;
recompute_center (FALSE);
if (ifsD->selected_orig)
g_free (ifsD->selected_orig);
ifsD->selected_orig = g_new (AffElement, ifsvals.num_elements);
}
/* show a transient message dialog */
static void
ifscompose_message_dialog (GtkMessageType type,
GtkWindow *parent,
const gchar *title,
const gchar *message)
{
GtkWidget *dialog;
dialog = gtk_message_dialog_new (parent, 0, type, GTK_BUTTONS_OK,
"%s", message);
if (title)
gtk_window_set_title (GTK_WINDOW (dialog), title);
gtk_window_set_role (GTK_WINDOW (dialog), "ifscompose-message");
gtk_dialog_run (GTK_DIALOG (dialog));
gtk_widget_destroy (dialog);
}
/* save an ifs file */
static void
ifsfile_save_response (GtkWidget *dialog,
gint response_id,
gpointer data)
{
if (response_id == GTK_RESPONSE_OK)
{
gchar *filename;
gchar *str;
FILE *fh;
filename = gtk_file_chooser_get_filename (GTK_FILE_CHOOSER (dialog));
str = ifsvals_stringify (&ifsvals, elements);
fh = g_fopen (filename, "wb");
if (! fh)
{
gchar *message =
g_strdup_printf (_("Could not open '%s' for writing: %s"),
pika_filename_to_utf8 (filename),
g_strerror (errno));
ifscompose_message_dialog (GTK_MESSAGE_ERROR, GTK_WINDOW (dialog),
_("Save failed"), message);
g_free (message);
g_free (filename);
return;
}
fputs (str, fh);
fclose (fh);
}
gtk_widget_destroy (dialog);
}
/* replace ifsvals and elements with specified new values
* recompute and update everything necessary */
static void
ifsfile_replace_ifsvals (IfsComposeVals *new_ifsvals,
AffElement **new_elements)
{
GtkAllocation allocation;
guint i;
gtk_widget_get_allocation (ifsDesign->area, &allocation);
for (i = 0; i < ifsvals.num_elements; i++)
aff_element_free (elements[i]);
g_free (elements);
ifsvals = *new_ifsvals;
elements = new_elements;
for (i = 0; i < ifsvals.num_elements; i++)
{
aff_element_compute_trans (elements[i],
allocation.width, allocation.height,
ifsvals.center_x, ifsvals.center_y);
aff_element_compute_color_trans (elements[i]);
}
element_selected = g_realloc (element_selected,
ifsvals.num_elements * sizeof(gboolean));
for (i = 0; i < ifsvals.num_elements; i++)
element_selected[i] = FALSE;
if (ifsOptD)
{
value_pair_update (ifsOptD->iterations_pair);
value_pair_update (ifsOptD->subdivide_pair);
value_pair_update (ifsOptD->radius_pair);
value_pair_update (ifsOptD->memory_pair);
}
set_current_element (0);
element_selected[0] = TRUE;
recompute_center (FALSE);
if (ifsD->selected_orig)
g_free (ifsD->selected_orig);
ifsD->selected_orig = g_new (AffElement, ifsvals.num_elements);
}
/* load an ifs file */
static void
ifsfile_load_response (GtkWidget *dialog,
gint response_id,
gpointer data)
{
if (response_id == GTK_RESPONSE_OK)
{
gchar *filename;
gchar *buffer;
AffElement **new_elements;
IfsComposeVals new_ifsvals;
GError *error = NULL;
guint i;
filename = gtk_file_chooser_get_filename (GTK_FILE_CHOOSER (dialog));
if (! g_file_get_contents (filename, &buffer, NULL, &error))
{
ifscompose_message_dialog (GTK_MESSAGE_ERROR, GTK_WINDOW (dialog),
_("Open failed"), error->message);
g_error_free (error);
g_free (filename);
return;
}
if (! ifsvals_parse_string (buffer, &new_ifsvals, &new_elements))
{
gchar *message = g_strdup_printf (_("File '%s' doesn't seem to be "
"an IFS Fractal file."),
pika_filename_to_utf8 (filename));
ifscompose_message_dialog (GTK_MESSAGE_ERROR, GTK_WINDOW (dialog),
_("Open failed"), message);
g_free (filename);
g_free (message);
g_free (buffer);
return;
}
g_free (buffer);
g_free (filename);
undo_begin ();
for (i = 0; i < ifsvals.num_elements; i++)
undo_update (i);
ifsfile_replace_ifsvals (&new_ifsvals, new_elements);
design_op_actions_update ();
ifs_compose_preview ();
design_area_redraw ();
}
gtk_widget_destroy (GTK_WIDGET (dialog));
}
static void
ifs_compose_save (void)
{
static GtkWidget *dialog = NULL;
if (! dialog)
{
dialog =
gtk_file_chooser_dialog_new (_("Save as IFS Fractal file"),
NULL,
GTK_FILE_CHOOSER_ACTION_SAVE,
_("_Cancel"), GTK_RESPONSE_CANCEL,
_("_Save"), GTK_RESPONSE_OK,
NULL);
pika_dialog_set_alternative_button_order (GTK_DIALOG (dialog),
GTK_RESPONSE_OK,
GTK_RESPONSE_CANCEL,
-1);
gtk_dialog_set_default_response (GTK_DIALOG (dialog), GTK_RESPONSE_OK);
gtk_file_chooser_set_do_overwrite_confirmation (GTK_FILE_CHOOSER (dialog),
TRUE);
g_signal_connect (dialog, "destroy",
G_CALLBACK (gtk_widget_destroyed),
&dialog);
g_signal_connect (dialog, "response",
G_CALLBACK (ifsfile_save_response),
NULL);
}
gtk_window_present (GTK_WINDOW (dialog));
}
static void
ifs_compose_load (void)
{
static GtkWidget *dialog = NULL;
if (! dialog)
{
dialog =
gtk_file_chooser_dialog_new (_("Open IFS Fractal file"),
NULL,
GTK_FILE_CHOOSER_ACTION_OPEN,
_("_Cancel"), GTK_RESPONSE_CANCEL,
_("_Open"), GTK_RESPONSE_OK,
NULL);
pika_dialog_set_alternative_button_order (GTK_DIALOG (dialog),
GTK_RESPONSE_OK,
GTK_RESPONSE_CANCEL,
-1);
gtk_dialog_set_default_response (GTK_DIALOG (dialog), GTK_RESPONSE_OK);
g_signal_connect (dialog, "destroy",
G_CALLBACK (gtk_widget_destroyed),
&dialog);
g_signal_connect (dialog, "response",
G_CALLBACK (ifsfile_load_response),
NULL);
}
gtk_window_present (GTK_WINDOW (dialog));
}
static void
ifs_compose_new_action (GSimpleAction *action,
GVariant *parameter,
gpointer user_data)
{
GtkAllocation allocation;
PikaRGB color;
gint i;
AffElement *elem;
gtk_widget_get_allocation (ifsDesign->area, &allocation);
undo_begin ();
pika_context_get_foreground (&color);
elem = aff_element_new (0.5, 0.5 * allocation.height / allocation.width,
&color,
++count_for_naming);
ifsvals.num_elements++;
elements = g_realloc (elements, ifsvals.num_elements * sizeof (AffElement *));
element_selected = g_realloc (element_selected,
ifsvals.num_elements * sizeof (gboolean));
for (i = 0; i < ifsvals.num_elements-1; i++)
element_selected[i] = FALSE;
element_selected[ifsvals.num_elements-1] = TRUE;
elements[ifsvals.num_elements-1] = elem;
set_current_element (ifsvals.num_elements-1);
ifsD->selected_orig = g_realloc (ifsD->selected_orig,
ifsvals.num_elements * sizeof(AffElement));
aff_element_compute_trans (elem,
allocation.width, allocation.height,
ifsvals.center_x, ifsvals.center_y);
design_area_redraw ();
ifs_compose_preview ();
design_op_actions_update ();
}
static void
ifs_compose_delete_action (GSimpleAction *action,
GVariant *parameter,
gpointer user_data)
{
gint i;
gint new_current;
undo_begin ();
undo_update (ifsD->current_element);
aff_element_free (elements[ifsD->current_element]);
if (ifsD->current_element < ifsvals.num_elements-1)
{
undo_update (ifsvals.num_elements-1);
elements[ifsD->current_element] = elements[ifsvals.num_elements-1];
new_current = ifsD->current_element;
}
else
new_current = ifsvals.num_elements-2;
ifsvals.num_elements--;
for (i = 0; i < ifsvals.num_elements; i++)
if (element_selected[i])
{
new_current = i;
break;
}
element_selected[new_current] = TRUE;
set_current_element (new_current);
design_area_redraw ();
ifs_compose_preview ();
design_op_actions_update ();
}
static void
ifs_compose_options_action (GSimpleAction *action,
GVariant *parameter,
gpointer user_data)
{
ifs_options_dialog ();
}
static gint
preview_idle_render (gpointer data)
{
GtkAllocation allocation;
gint iterations = PREVIEW_RENDER_CHUNK;
gint i;
gtk_widget_get_allocation (ifsDesign->area, &allocation);
if (iterations > ifsD->preview_iterations)
iterations = ifsD->preview_iterations;
for (i = 0; i < ifsvals.num_elements; i++)
aff_element_compute_trans (elements[i],
allocation.width, allocation.height,
ifsvals.center_x, ifsvals.center_y);
ifs_render (elements, ifsvals.num_elements,
allocation.width, allocation.height,
iterations,&ifsvals, 0, allocation.height,
ifsD->preview_data, NULL, NULL, TRUE);
for (i = 0; i < ifsvals.num_elements; i++)
aff_element_compute_trans (elements[i],
allocation.width, allocation.height,
ifsvals.center_x, ifsvals.center_y);
ifsD->preview_iterations -= iterations;
pika_preview_area_draw (PIKA_PREVIEW_AREA (ifsD->preview),
0, 0, allocation.width, allocation.height,
PIKA_RGB_IMAGE,
ifsD->preview_data,
allocation.width * 3);
return (ifsD->preview_iterations != 0);
}
static void transform_change_state (GSimpleAction *action,
GVariant *new_state,
gpointer user_data)
{
gchar *str;
str = g_strdup_printf ("%s", g_variant_get_string (new_state, NULL));
if (! strcmp (str, "move"))
ifsDesign->op = OP_TRANSLATE;
else if (! strcmp (str, "rotate"))
ifsDesign->op = OP_ROTATE;
else if (! strcmp (str, "stretch"))
ifsDesign->op = OP_STRETCH;
g_free (str);
g_simple_action_set_state (action, new_state);
/* cursor switch */
if (gtk_widget_get_realized (ifsDesign->area))
design_area_realize (ifsDesign->area);
}
static void
ifs_compose_preview (void)
{
/* Expansion isn't really supported for previews */
gint i;
gint width = ifsD->preview_width;
gint height = ifsD->preview_height;
guchar rc, gc, bc;
guchar *ptr;
PikaRGB color;
if (!ifsD->preview_data)
ifsD->preview_data = g_new (guchar, 3 * width * height);
pika_context_get_background (&color);
pika_rgb_get_uchar (&color, &rc, &gc, &bc);
ptr = ifsD->preview_data;
for (i = 0; i < width * height; i++)
{
*ptr++ = rc;
*ptr++ = gc;
*ptr++ = bc;
}
if (ifsD->preview_iterations == 0)
g_idle_add (preview_idle_render, NULL);
ifsD->preview_iterations =
ifsvals.iterations * ((gdouble) width * height /
(ifsD->drawable_width * ifsD->drawable_height));
}
static void
ifs_compose_response (GtkWidget *widget,
gint response_id)
{
switch (response_id)
{
case RESPONSE_OPEN:
ifs_compose_load ();
break;
case RESPONSE_SAVE:
ifs_compose_save ();
break;
case RESPONSE_RESET:
{
GtkAllocation allocation;
gint i;
gtk_widget_get_allocation (ifsDesign->area, &allocation);
undo_begin ();
for (i = 0; i < ifsvals.num_elements; i++)
undo_update (i);
ifs_compose_set_defaults ();
ifs_compose_preview ();
for (i = 0; i < ifsvals.num_elements; i++)
aff_element_compute_trans (elements[i],
allocation.width, allocation.height,
ifsvals.center_x, ifsvals.center_y);
design_area_redraw ();
design_op_actions_update ();
}
break;
case GTK_RESPONSE_OK:
ifscint.run = TRUE;
default:
gtk_application_remove_window (ifs->app, GTK_WINDOW (ifs->dialog));
break;
}
}
static void
window_destroy (GtkWidget *widget,
PikaIfs *ifs)
{
if (ifsOptD)
gtk_widget_destroy (ifsOptD->dialog);
g_free (ifsD);
gtk_application_remove_window (ifs->app, GTK_WINDOW (ifs->dialog));
}
static GtkWidget *
add_tool_button (GtkWidget *toolbar,
const char *action,
const char *icon,
const char *label,
const char *tooltip)
{
GtkWidget *tool_icon;
GtkToolItem *tool_button;
tool_icon = gtk_image_new_from_icon_name (icon, GTK_ICON_SIZE_BUTTON);
gtk_widget_show (GTK_WIDGET (tool_icon));
tool_button = gtk_tool_button_new (tool_icon, label);
gtk_widget_show (GTK_WIDGET (tool_button));
gtk_tool_item_set_tooltip_text (tool_button, tooltip);
gtk_actionable_set_detailed_action_name (GTK_ACTIONABLE (tool_button), action);
gtk_toolbar_insert (GTK_TOOLBAR (toolbar), tool_button, -1);
return GTK_WIDGET (tool_button);
}
GtkWidget *
add_toggle_button (GtkWidget *toolbar,
const char *action,
const char *icon,
const char *label,
const char *tooltip)
{
GtkWidget *tool_icon;
GtkToolItem *toggle_tool_button;
tool_icon = gtk_image_new_from_icon_name (icon, GTK_ICON_SIZE_BUTTON);
gtk_widget_show (GTK_WIDGET (tool_icon));
toggle_tool_button = gtk_toggle_tool_button_new ();
gtk_tool_button_set_icon_widget (GTK_TOOL_BUTTON (toggle_tool_button),
tool_icon);
gtk_tool_button_set_label (GTK_TOOL_BUTTON (toggle_tool_button), label);
gtk_widget_show (GTK_WIDGET (toggle_tool_button));
gtk_tool_item_set_tooltip_text (toggle_tool_button, tooltip);
gtk_actionable_set_detailed_action_name (GTK_ACTIONABLE (toggle_tool_button), action);
gtk_toolbar_insert (GTK_TOOLBAR (toolbar), toggle_tool_button, -1);
return GTK_WIDGET (toggle_tool_button);
}
static void
add_tool_separator (GtkWidget *toolbar,
gboolean expand)
{
GtkToolItem *item;
item = gtk_separator_tool_item_new ();
gtk_toolbar_insert (GTK_TOOLBAR (toolbar), item, -1);
gtk_separator_tool_item_set_draw (GTK_SEPARATOR_TOOL_ITEM (item), FALSE);
gtk_tool_item_set_expand (item, expand);
gtk_widget_show (GTK_WIDGET (item));
}
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