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gimp/plug-ins/common/grid.c
Alx Sa fb577f1833 plug-ins: Prevent infinite signal loop in legacy grid 
Selecting a color in GimpColorSelection triggers
gimp_color_selection_color_changed (). In the legacy
Grid plug-in, this led to an infinite signal loop (and crash)
when changing colors when the chain link is active. Changing
one button's color would trigger the other to change, which
would trigger the first one to change again and so on.

This patch resolves the issue by blocking the signal in color_callback ()
when the other button is changed in response to the first, so that
there's no infinite chain of callbacks.
2025-05-06 17:57:55 +00:00

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/* GIMP - The GNU Image Manipulation Program
* Copyright (C) 1995 Spencer Kimball and Peter Mattis
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
/* Original plug-in coded by Tim Newsome.
*
* Changed to make use of real-life units by Sven Neumann <sven@gimp.org>.
*
* The interface code is heavily commented in the hope that it will
* help other plug-in developers to adapt their plug-ins to make use
* of the gimp_size_entry functionality.
*
* Note: There is a convenience constructor called gimp_coordinetes_new ()
* which simplifies the task of setting up a standard X,Y sizeentry.
*
* For more info and bugs see libgimp/gimpsizeentry.h and libgimp/gimpwidgets.h
*
* May 2000 tim copperfield [timecop@japan.co.jp]
* http://www.ne.jp/asahi/linux/timecop
* Added dynamic preview. Due to weird implementation of signals from all
* controls, preview will not auto-update. But this plugin isn't really
* crying for real-time updating either.
*
*/
#include "config.h"
#include <string.h>
#include <libgimp/gimp.h>
#include <libgimp/gimpui.h>
#include "libgimp/stdplugins-intl.h"
#define PLUG_IN_PROC "plug-in-grid"
#define PLUG_IN_BINARY "grid"
#define PLUG_IN_ROLE "gimp-grid"
#define SPIN_BUTTON_WIDTH 8
#define COLOR_BUTTON_WIDTH 55
typedef struct _Grid Grid;
typedef struct _GridClass GridClass;
struct _Grid
{
GimpPlugIn parent_instance;
GimpDrawable *drawable;
GimpProcedureConfig *config;
GtkWidget *hcolor_button;
GtkWidget *vcolor_button;
GtkWidget *icolor_button;
GtkWidget *color_chain;
};
struct _GridClass
{
GimpPlugInClass parent_class;
};
#define GRID_TYPE (grid_get_type ())
#define GRID(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), GRID_TYPE, Grid))
GType grid_get_type (void) G_GNUC_CONST;
static GList * grid_query_procedures (GimpPlugIn *plug_in);
static GimpProcedure * grid_create_procedure (GimpPlugIn *plug_in,
const gchar *name);
static GimpValueArray * grid_run (GimpProcedure *procedure,
GimpRunMode run_mode,
GimpImage *image,
GimpDrawable **drawables,
GimpProcedureConfig *config,
gpointer run_data);
static guchar best_cmap_match (const guchar *cmap,
gint ncolors,
GeglColor *color);
static void render_grid (GimpImage *image,
GimpDrawable *drawable,
GimpProcedureConfig *config,
GimpPreview *preview);
static gint dialog (GimpImage *image,
GimpDrawable *drawable,
GimpProcedure *procedure,
GimpProcedureConfig *config);
G_DEFINE_TYPE (Grid, grid, GIMP_TYPE_PLUG_IN)
GIMP_MAIN (GRID_TYPE)
DEFINE_STD_SET_I18N
static gint sx1, sy1, sx2, sy2;
static GtkWidget *main_dialog = NULL;
static void
grid_class_init (GridClass *klass)
{
GimpPlugInClass *plug_in_class = GIMP_PLUG_IN_CLASS (klass);
plug_in_class->query_procedures = grid_query_procedures;
plug_in_class->create_procedure = grid_create_procedure;
plug_in_class->set_i18n = STD_SET_I18N;
}
static void
grid_init (Grid *grid)
{
}
static GList *
grid_query_procedures (GimpPlugIn *plug_in)
{
return g_list_append (NULL, g_strdup (PLUG_IN_PROC));
}
static GimpProcedure *
grid_create_procedure (GimpPlugIn *plug_in,
const gchar *name)
{
GimpProcedure *procedure = NULL;
if (! strcmp (name, PLUG_IN_PROC))
{
GeglColor *default_hcolor;
GeglColor *default_vcolor;
GeglColor *default_icolor;
gegl_init (NULL, NULL);
default_hcolor = gegl_color_new ("black");
default_vcolor = gegl_color_new ("black");
default_icolor = gegl_color_new ("black");
procedure = gimp_image_procedure_new (plug_in, name,
GIMP_PDB_PROC_TYPE_PLUGIN,
grid_run, NULL, NULL);
gimp_procedure_set_image_types (procedure, "*");
gimp_procedure_set_sensitivity_mask (procedure,
GIMP_PROCEDURE_SENSITIVE_DRAWABLE);
gimp_procedure_set_menu_label (procedure, _("_Grid (legacy)..."));
gimp_procedure_add_menu_path (procedure,
"<Image>/Filters/Render/Pattern");
gimp_procedure_set_documentation (procedure,
_("Draw a grid on the image"),
"Draws a grid using the specified "
"colors. The grid origin is the "
"upper left corner.",
name);
gimp_procedure_set_attribution (procedure,
"Tim Newsome",
"Tim Newsome, Sven Neumann, "
"Tom Rathborne, TC",
"1997 - 2000");
gimp_procedure_add_int_argument (procedure, "hwidth",
"H width",
"Horizontal width",
0, GIMP_MAX_IMAGE_SIZE, 1,
G_PARAM_READWRITE);
gimp_procedure_add_int_argument (procedure, "hspace",
"H space",
"Horizontal spacing",
1, GIMP_MAX_IMAGE_SIZE, 16,
G_PARAM_READWRITE);
gimp_procedure_add_int_argument (procedure, "hoffset",
"H offset",
"Horizontal offset",
0, GIMP_MAX_IMAGE_SIZE, 8,
G_PARAM_READWRITE);
/* TODO: for "hcolor", "icolor" and "vcolor", the original code would use
* the foreground color as default. Future work would be to get the
* foreground/background color from context.
*/
gimp_procedure_add_color_argument (procedure, "hcolor",
"H color",
"Horizontal color",
TRUE, default_hcolor,
G_PARAM_READWRITE);
gimp_procedure_add_int_argument (procedure, "vwidth",
"V width",
"Vertical width",
0, GIMP_MAX_IMAGE_SIZE, 1,
G_PARAM_READWRITE);
gimp_procedure_add_int_argument (procedure, "vspace",
"V space",
"Vertical spacing",
1, GIMP_MAX_IMAGE_SIZE, 16,
G_PARAM_READWRITE);
gimp_procedure_add_int_argument (procedure, "voffset",
"V offset",
"Vertical offset",
0, GIMP_MAX_IMAGE_SIZE, 8,
G_PARAM_READWRITE);
gimp_procedure_add_color_argument (procedure, "vcolor",
"V color",
"Vertical color",
TRUE, default_vcolor,
G_PARAM_READWRITE);
gimp_procedure_add_int_argument (procedure, "iwidth",
"I width",
"Intersection width",
0, GIMP_MAX_IMAGE_SIZE, 0,
G_PARAM_READWRITE);
gimp_procedure_add_int_argument (procedure, "ispace",
"I space",
"Intersection spacing",
1, GIMP_MAX_IMAGE_SIZE, 2,
G_PARAM_READWRITE);
gimp_procedure_add_int_argument (procedure, "ioffset",
"I offset",
"Intersection offset",
0, GIMP_MAX_IMAGE_SIZE, 6,
G_PARAM_READWRITE);
gimp_procedure_add_color_argument (procedure, "icolor",
"I color",
"Intersection color",
TRUE, default_icolor,
G_PARAM_READWRITE);
g_object_unref (default_hcolor);
g_object_unref (default_vcolor);
g_object_unref (default_icolor);
}
return procedure;
}
static GimpValueArray *
grid_run (GimpProcedure *procedure,
GimpRunMode run_mode,
GimpImage *image,
GimpDrawable **drawables,
GimpProcedureConfig *config,
gpointer run_data)
{
GimpDrawable *drawable;
gegl_init (NULL, NULL);
if (gimp_core_object_array_get_length ((GObject **) drawables) != 1)
{
GError *error = NULL;
g_set_error (&error, GIMP_PLUG_IN_ERROR, 0,
_("Procedure '%s' only works with one drawable."),
PLUG_IN_PROC);
return gimp_procedure_new_return_values (procedure,
GIMP_PDB_CALLING_ERROR,
error);
}
else
{
drawable = drawables[0];
}
if (run_mode == GIMP_RUN_INTERACTIVE && ! dialog (image, drawable, procedure, config))
return gimp_procedure_new_return_values (procedure,
GIMP_PDB_CANCEL,
NULL);
gimp_progress_init (_("Drawing grid"));
render_grid (image, drawable, config, NULL);
if (run_mode != GIMP_RUN_NONINTERACTIVE)
gimp_displays_flush ();
return gimp_procedure_new_return_values (procedure, GIMP_PDB_SUCCESS, NULL);
}
#define MAXDIFF 195076
static guchar
best_cmap_match (const guchar *cmap,
gint ncolors,
GeglColor *color)
{
guchar cmap_index = 0;
gint max = MAXDIFF;
gint i, diff, sum;
guchar rgb[3];
gegl_color_get_pixel (color, babl_format ("R'G'B' u8"), rgb);
for (i = 0; i < ncolors; i++)
{
diff = rgb[0] - *cmap++;
sum = SQR (diff);
diff = rgb[1] - *cmap++;
sum += SQR (diff);
diff = rgb[2] - *cmap++;
sum += SQR (diff);
if (sum < max)
{
cmap_index = i;
max = sum;
}
}
return cmap_index;
}
static inline void
pix_composite (guchar *p1,
guchar p2[4],
gint bytes,
gboolean blend,
gboolean alpha)
{
gint b;
gint alpha_index;
alpha_index = alpha ? (bytes - 1) : bytes;
if (blend)
{
if (alpha)
bytes--;
for (b = 0; b < bytes; b++)
{
*p1 = *p1 * (1.0 - p2[alpha_index] / 255.0) +
p2[b] * p2[alpha_index] / 255.0;
p1++;
}
}
else
{
/* blend should only be TRUE for indexed (bytes == 1) */
*p1++ = *p2;
}
if (alpha && *p1 < 255)
{
b = *p1 + 255.0 * ((gdouble) p2[alpha_index] / (255.0 - *p1));
*p1 = b > 255 ? 255 : b;
}
}
static void
render_grid (GimpImage *image,
GimpDrawable *drawable,
GimpProcedureConfig *config,
GimpPreview *preview)
{
GeglBuffer *src_buffer = NULL;
GeglBuffer *dest_buffer = NULL;
const Babl *format;
gint bytes;
gint x_offset;
gint y_offset;
guchar *dest = NULL;
guchar *buffer = NULL;
gint x, y;
gboolean alpha;
gboolean blend;
guchar hcolor[4];
guchar vcolor[4];
guchar icolor[4];
guchar *cmap;
gint ncolors;
gint hwidth;
gint hspace;
gint hoffset;
GeglColor *hcolor_gegl;
gint vwidth;
gint vspace;
gint voffset;
GeglColor *vcolor_gegl;
gint iwidth;
gint ispace;
gint ioffset;
GeglColor *icolor_gegl;
g_object_get (config,
"hwidth", &hwidth,
"hspace", &hspace,
"hoffset", &hoffset,
"hcolor", &hcolor_gegl,
"vwidth", &vwidth,
"vspace", &vspace,
"voffset", &voffset,
"vcolor", &vcolor_gegl,
"iwidth", &iwidth,
"ispace", &ispace,
"ioffset", &ioffset,
"icolor", &icolor_gegl,
NULL);
if (hcolor_gegl == NULL)
hcolor_gegl = gegl_color_new ("black");
if (vcolor_gegl == NULL)
vcolor_gegl = gegl_color_new ("black");
if (icolor_gegl == NULL)
icolor_gegl = gegl_color_new ("black");
alpha = gimp_drawable_has_alpha (drawable);
switch (gimp_image_get_base_type (image))
{
case GIMP_RGB:
blend = TRUE;
if (alpha)
format = babl_format ("R'G'B'A u8");
else
format = babl_format ("R'G'B' u8");
gegl_color_get_pixel (hcolor_gegl, babl_format ("R'G'B'A u8"), hcolor);
gegl_color_get_pixel (vcolor_gegl, babl_format ("R'G'B'A u8"), vcolor);
gegl_color_get_pixel (icolor_gegl, babl_format ("R'G'B'A u8"), icolor);
break;
case GIMP_GRAY:
blend = TRUE;
if (alpha)
format = babl_format ("Y'A u8");
else
format = babl_format ("Y' u8");
gegl_color_get_pixel (hcolor_gegl, babl_format ("Y'A u8"), hcolor);
gegl_color_get_pixel (vcolor_gegl, babl_format ("Y'A u8"), vcolor);
gegl_color_get_pixel (icolor_gegl, babl_format ("Y'A u8"), icolor);
break;
case GIMP_INDEXED:
cmap = gimp_palette_get_colormap (gimp_image_get_palette (image), babl_format ("R'G'B' u8"), &ncolors, NULL);
hcolor[0] = best_cmap_match (cmap, ncolors, hcolor_gegl);
vcolor[0] = best_cmap_match (cmap, ncolors, vcolor_gegl);
icolor[0] = best_cmap_match (cmap, ncolors, icolor_gegl);
g_free (cmap);
blend = FALSE;
format = gimp_drawable_get_format (drawable);
break;
default:
g_assert_not_reached ();
blend = FALSE;
}
g_clear_object (&hcolor_gegl);
g_clear_object (&vcolor_gegl);
g_clear_object (&icolor_gegl);
bytes = babl_format_get_bytes_per_pixel (format);
if (preview)
{
gimp_preview_get_position (preview, &sx1, &sy1);
gimp_preview_get_size (preview, &sx2, &sy2);
buffer = g_new (guchar, bytes * sx2 * sy2);
sx2 += sx1;
sy2 += sy1;
}
else
{
gint w, h;
if (! gimp_drawable_mask_intersect (drawable,
&sx1, &sy1, &w, &h))
return;
sx2 = sx1 + w;
sy2 = sy1 + h;
dest_buffer = gimp_drawable_get_shadow_buffer (drawable);
}
src_buffer = gimp_drawable_get_buffer (drawable);
dest = g_new (guchar, (sx2 - sx1) * bytes);
for (y = sy1; y < sy2; y++)
{
gegl_buffer_get (src_buffer, GEGL_RECTANGLE (sx1, y, sx2 - sx1, 1), 1.0,
format, dest,
GEGL_AUTO_ROWSTRIDE, GEGL_ABYSS_NONE);
y_offset = y - hoffset;
while (y_offset < 0)
y_offset += hspace;
if ((y_offset + (hwidth / 2)) % hspace < hwidth)
{
for (x = sx1; x < sx2; x++)
{
pix_composite (&dest[(x-sx1) * bytes],
hcolor, bytes, blend, alpha);
}
}
for (x = sx1; x < sx2; x++)
{
x_offset = vspace + x - voffset;
while (x_offset < 0)
x_offset += vspace;
if ((x_offset + (vwidth / 2)) % vspace < vwidth)
{
pix_composite (&dest[(x-sx1) * bytes],
vcolor, bytes, blend, alpha);
}
if ((x_offset + (iwidth / 2)) % vspace < iwidth
&&
((y_offset % hspace >= ispace
&&
y_offset % hspace < ioffset)
||
(hspace -
(y_offset % hspace) >= ispace
&&
hspace -
(y_offset % hspace) < ioffset)))
{
pix_composite (&dest[(x-sx1) * bytes],
icolor, bytes, blend, alpha);
}
}
if ((y_offset + (iwidth / 2)) % hspace < iwidth)
{
for (x = sx1; x < sx2; x++)
{
x_offset = vspace + x - voffset;
while (x_offset < 0)
x_offset += vspace;
if ((x_offset % vspace >= ispace
&&
x_offset % vspace < ioffset)
||
(vspace -
(x_offset % vspace) >= ispace
&&
vspace -
(x_offset % vspace) < ioffset))
{
pix_composite (&dest[(x-sx1) * bytes],
icolor, bytes, blend, alpha);
}
}
}
if (preview)
{
memcpy (buffer + (y - sy1) * (sx2 - sx1) * bytes,
dest,
(sx2 - sx1) * bytes);
}
else
{
gegl_buffer_set (dest_buffer,
GEGL_RECTANGLE (sx1, y, sx2 - sx1, 1), 0,
format, dest,
GEGL_AUTO_ROWSTRIDE);
if (y % 16 == 0)
gimp_progress_update ((gdouble) y / (gdouble) (sy2 - sy1));
}
}
g_free (dest);
g_object_unref (src_buffer);
if (preview)
{
gimp_preview_draw_buffer (preview, buffer, bytes * (sx2 - sx1));
g_free (buffer);
}
else
{
gimp_progress_update (1.0);
g_object_unref (dest_buffer);
gimp_drawable_merge_shadow (drawable, TRUE);
gimp_drawable_update (drawable,
sx1, sy1, sx2 - sx1, sy2 - sy1);
}
}
/***************************************************
* GUI stuff
*/
static void
update_values (Grid *grid)
{
GtkWidget *entry;
GeglColor *color;
entry = g_object_get_data (G_OBJECT (main_dialog), "width");
g_object_set (grid->config,
"hwidth",
(gint) RINT (gimp_size_entry_get_refval (GIMP_SIZE_ENTRY (entry), 0)),
"vwidth",
(gint) RINT (gimp_size_entry_get_refval (GIMP_SIZE_ENTRY (entry), 1)),
"iwidth",
(gint) RINT (gimp_size_entry_get_refval (GIMP_SIZE_ENTRY (entry), 2)),
NULL);
entry = g_object_get_data (G_OBJECT (main_dialog), "space");
g_object_set (grid->config,
"hspace",
(gint) RINT (gimp_size_entry_get_refval (GIMP_SIZE_ENTRY (entry), 0)),
"vspace",
(gint) RINT (gimp_size_entry_get_refval (GIMP_SIZE_ENTRY (entry), 1)),
"ispace",
(gint) RINT (gimp_size_entry_get_refval (GIMP_SIZE_ENTRY (entry), 2)),
NULL);
entry = g_object_get_data (G_OBJECT (main_dialog), "offset");
g_object_set (grid->config,
"hoffset",
(gint) RINT (gimp_size_entry_get_refval (GIMP_SIZE_ENTRY (entry), 0)),
"voffset",
(gint) RINT (gimp_size_entry_get_refval (GIMP_SIZE_ENTRY (entry), 1)),
"ioffset",
(gint) RINT (gimp_size_entry_get_refval (GIMP_SIZE_ENTRY (entry), 2)),
NULL);
color = gimp_color_button_get_color (GIMP_COLOR_BUTTON (grid->hcolor_button));
g_object_set (grid->config, "hcolor", color, NULL);
g_object_unref (color);
color = gimp_color_button_get_color (GIMP_COLOR_BUTTON (grid->vcolor_button));
g_object_set (grid->config, "vcolor", color, NULL);
g_object_unref (color);
color = gimp_color_button_get_color (GIMP_COLOR_BUTTON (grid->icolor_button));
g_object_set (grid->config, "icolor", color, NULL);
g_object_unref (color);
}
static void
update_preview (GimpPreview *preview,
Grid *grid)
{
update_values (grid);
render_grid (gimp_item_get_image (GIMP_ITEM (grid->drawable)),
grid->drawable, grid->config, preview);
}
static void
entry_callback (GtkWidget *widget,
gpointer data)
{
static gdouble x = -1.0;
static gdouble y = -1.0;
gdouble new_x;
gdouble new_y;
new_x = gimp_size_entry_get_refval (GIMP_SIZE_ENTRY (widget), 0);
new_y = gimp_size_entry_get_refval (GIMP_SIZE_ENTRY (widget), 1);
if (gimp_chain_button_get_active (GIMP_CHAIN_BUTTON (data)))
{
if (new_x != x)
{
y = new_y = x = new_x;
gimp_size_entry_set_refval (GIMP_SIZE_ENTRY (widget), 1, y);
}
if (new_y != y)
{
x = new_x = y = new_y;
gimp_size_entry_set_refval (GIMP_SIZE_ENTRY (widget), 0, x);
}
}
else
{
x = new_x;
y = new_y;
}
}
static void
color_callback (GtkWidget *widget,
gpointer data)
{
Grid *grid = GRID (data);
GtkWidget *chain_button = grid->color_chain;
GeglColor *color;
color = gimp_color_button_get_color (GIMP_COLOR_BUTTON (widget));
if (gimp_chain_button_get_active (GIMP_CHAIN_BUTTON (chain_button)))
{
if (widget == grid->vcolor_button)
{
g_signal_handlers_block_by_func (grid->hcolor_button, color_callback,
grid);
gimp_color_button_set_color (GIMP_COLOR_BUTTON (grid->hcolor_button),
color);
g_signal_handlers_unblock_by_func (grid->hcolor_button,
color_callback, grid);
}
else if (widget == grid->hcolor_button)
{
g_signal_handlers_block_by_func (grid->vcolor_button, color_callback,
grid);
gimp_color_button_set_color (GIMP_COLOR_BUTTON (grid->vcolor_button),
color);
g_signal_handlers_unblock_by_func (grid->vcolor_button,
color_callback, grid);
}
}
if (widget == grid->hcolor_button)
g_object_set (grid->config, "hcolor", color, NULL);
else if (widget == grid->vcolor_button)
g_object_set (grid->config, "vcolor", color, NULL);
else if (widget == grid->icolor_button)
g_object_set (grid->config, "icolor", color, NULL);
g_object_unref (color);
}
static gint
dialog (GimpImage *image,
GimpDrawable *drawable,
GimpProcedure *procedure,
GimpProcedureConfig *config)
{
Grid *grid;
GimpColorConfig *color_config;
GtkWidget *dlg;
GtkWidget *main_vbox;
GtkWidget *vbox;
GtkSizeGroup *group;
GtkWidget *label;
GtkWidget *preview;
GtkWidget *width;
GtkWidget *space;
GtkWidget *offset;
GtkWidget *chain_button;
GimpUnit *unit;
gint d_width;
gint d_height;
gdouble xres;
gdouble yres;
gboolean run;
gint hwidth;
gint hspace;
gint hoffset;
GeglColor *hcolor;
gint vwidth;
gint vspace;
gint voffset;
GeglColor *vcolor;
gint iwidth;
gint ispace;
gint ioffset;
GeglColor *icolor;
g_return_val_if_fail (main_dialog == NULL, FALSE);
g_object_get (config,
"hwidth", &hwidth,
"hspace", &hspace,
"hoffset", &hoffset,
"hcolor", &hcolor,
"vwidth", &vwidth,
"vspace", &vspace,
"voffset", &voffset,
"vcolor", &vcolor,
"iwidth", &iwidth,
"ispace", &ispace,
"ioffset", &ioffset,
"icolor", &icolor,
NULL);
gimp_ui_init (PLUG_IN_BINARY);
d_width = gimp_drawable_get_width (drawable);
d_height = gimp_drawable_get_height (drawable);
main_dialog = dlg = gimp_dialog_new (_("Grid"), PLUG_IN_ROLE,
NULL, 0,
gimp_standard_help_func, PLUG_IN_PROC,
_("_Cancel"), GTK_RESPONSE_CANCEL,
_("_OK"), GTK_RESPONSE_OK,
NULL);
gimp_dialog_set_alternative_button_order (GTK_DIALOG (dlg),
GTK_RESPONSE_OK,
GTK_RESPONSE_CANCEL,
-1);
gimp_window_set_transient (GTK_WINDOW (dlg));
/* Get the image resolution and unit */
gimp_image_get_resolution (image, &xres, &yres);
unit = gimp_image_get_unit (image);
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 (dlg))),
main_vbox, TRUE, TRUE, 0);
gtk_widget_show (main_vbox);
preview = gimp_drawable_preview_new_from_drawable (drawable);
gtk_box_pack_start (GTK_BOX (main_vbox), preview, TRUE, TRUE, 0);
gtk_widget_show (preview);
grid = GRID (gimp_procedure_get_plug_in (procedure));
grid->drawable = drawable;
grid->config = config;
g_signal_connect (preview, "invalidated",
G_CALLBACK (update_preview),
grid);
vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 2);
gtk_box_pack_start (GTK_BOX (main_vbox), vbox, FALSE, FALSE, 0);
gtk_widget_show (vbox);
/* The width entries */
width = gimp_size_entry_new (3, /* number_of_fields */
unit, /* unit */
"%a", /* unit_format */
TRUE, /* menu_show_pixels */
TRUE, /* menu_show_percent */
FALSE, /* show_refval */
SPIN_BUTTON_WIDTH, /* spinbutton_usize */
GIMP_SIZE_ENTRY_UPDATE_SIZE); /* update_policy */
gtk_box_pack_start (GTK_BOX (vbox), width, FALSE, FALSE, 0);
gtk_widget_show (width);
/* set the unit back to pixels, since most times we will want pixels */
gimp_size_entry_set_unit (GIMP_SIZE_ENTRY (width), gimp_unit_pixel ());
/* set the resolution to the image resolution */
gimp_size_entry_set_resolution (GIMP_SIZE_ENTRY (width), 0, xres, TRUE);
gimp_size_entry_set_resolution (GIMP_SIZE_ENTRY (width), 1, yres, TRUE);
gimp_size_entry_set_resolution (GIMP_SIZE_ENTRY (width), 2, xres, TRUE);
/* set the size (in pixels) that will be treated as 0% and 100% */
gimp_size_entry_set_size (GIMP_SIZE_ENTRY (width), 0, 0.0, d_height);
gimp_size_entry_set_size (GIMP_SIZE_ENTRY (width), 1, 0.0, d_width);
gimp_size_entry_set_size (GIMP_SIZE_ENTRY (width), 2, 0.0, d_width);
/* set upper and lower limits (in pixels) */
gimp_size_entry_set_refval_boundaries (GIMP_SIZE_ENTRY (width), 0, 0.0,
d_height);
gimp_size_entry_set_refval_boundaries (GIMP_SIZE_ENTRY (width), 1, 0.0,
d_width);
gimp_size_entry_set_refval_boundaries (GIMP_SIZE_ENTRY (width), 2, 0.0,
MAX (d_width, d_height));
gtk_grid_set_column_spacing (GTK_GRID (width), 6);
/* initialize the values */
gimp_size_entry_set_refval (GIMP_SIZE_ENTRY (width), 0, hwidth);
gimp_size_entry_set_refval (GIMP_SIZE_ENTRY (width), 1, vwidth);
gimp_size_entry_set_refval (GIMP_SIZE_ENTRY (width), 2, iwidth);
/* attach labels */
gimp_size_entry_attach_label (GIMP_SIZE_ENTRY (width), _("Horizontal\nLines"),
0, 1, 0.0);
gimp_size_entry_attach_label (GIMP_SIZE_ENTRY (width), _("Vertical\nLines"),
0, 2, 0.0);
gimp_size_entry_attach_label (GIMP_SIZE_ENTRY (width), _("Intersection"),
0, 3, 0.0);
label = gimp_size_entry_attach_label (GIMP_SIZE_ENTRY (width), _("Width:"),
1, 0, 0.0);
group = gtk_size_group_new (GTK_SIZE_GROUP_HORIZONTAL);
gtk_size_group_add_widget (group, label);
g_object_unref (group);
/* put a chain_button under the size_entries */
chain_button = gimp_chain_button_new (GIMP_CHAIN_BOTTOM);
if (hwidth == vwidth)
gimp_chain_button_set_active (GIMP_CHAIN_BUTTON (chain_button), TRUE);
gtk_grid_attach (GTK_GRID (width), chain_button, 1, 2, 2, 1);
gtk_widget_show (chain_button);
/* connect to the 'value-changed' signal because we have to take care
* of keeping the entries in sync when the chainbutton is active
*/
g_signal_connect (width, "value-changed",
G_CALLBACK (entry_callback),
chain_button);
g_signal_connect_swapped (width, "value-changed",
G_CALLBACK (gimp_preview_invalidate),
preview);
/* The spacing entries */
space = gimp_size_entry_new (3, /* number_of_fields */
unit, /* unit */
"%a", /* unit_format */
TRUE, /* menu_show_pixels */
TRUE, /* menu_show_percent */
FALSE, /* show_refval */
SPIN_BUTTON_WIDTH, /* spinbutton_usize */
GIMP_SIZE_ENTRY_UPDATE_SIZE); /* update_policy */
gtk_box_pack_start (GTK_BOX (vbox), space, FALSE, FALSE, 0);
gtk_widget_show (space);
gimp_size_entry_set_unit (GIMP_SIZE_ENTRY (space), gimp_unit_pixel ());
/* set the resolution to the image resolution */
gimp_size_entry_set_resolution (GIMP_SIZE_ENTRY (space), 0, xres, TRUE);
gimp_size_entry_set_resolution (GIMP_SIZE_ENTRY (space), 1, yres, TRUE);
gimp_size_entry_set_resolution (GIMP_SIZE_ENTRY (space), 2, xres, TRUE);
/* set the size (in pixels) that will be treated as 0% and 100% */
gimp_size_entry_set_size (GIMP_SIZE_ENTRY (space), 0, 0.0, d_height);
gimp_size_entry_set_size (GIMP_SIZE_ENTRY (space), 1, 0.0, d_width);
gimp_size_entry_set_size (GIMP_SIZE_ENTRY (space), 2, 0.0, d_width);
/* set upper and lower limits (in pixels) */
gimp_size_entry_set_refval_boundaries (GIMP_SIZE_ENTRY (space), 0, 1.0,
d_height);
gimp_size_entry_set_refval_boundaries (GIMP_SIZE_ENTRY (space), 1, 1.0,
d_width);
gimp_size_entry_set_refval_boundaries (GIMP_SIZE_ENTRY (space), 2, 0.0,
MAX (d_width, d_height));
gtk_grid_set_column_spacing (GTK_GRID (space), 6);
/* initialize the values */
gimp_size_entry_set_refval (GIMP_SIZE_ENTRY (space), 0, hspace);
gimp_size_entry_set_refval (GIMP_SIZE_ENTRY (space), 1, vspace);
gimp_size_entry_set_refval (GIMP_SIZE_ENTRY (space), 2, ispace);
/* attach labels */
label = gimp_size_entry_attach_label (GIMP_SIZE_ENTRY (space), _("Spacing:"),
1, 0, 0.0);
gtk_size_group_add_widget (group, label);
/* put a chain_button under the spacing_entries */
chain_button = gimp_chain_button_new (GIMP_CHAIN_BOTTOM);
if (hspace == vspace)
gimp_chain_button_set_active (GIMP_CHAIN_BUTTON (chain_button), TRUE);
gtk_grid_attach (GTK_GRID (space), chain_button, 1, 2, 2, 1);
gtk_widget_show (chain_button);
/* connect to the 'value-changed' and "unit-changed" signals because
* we have to take care of keeping the entries in sync when the
* chainbutton is active
*/
g_signal_connect (space, "value-changed",
G_CALLBACK (entry_callback),
chain_button);
g_signal_connect (space, "unit-changed",
G_CALLBACK (entry_callback),
chain_button);
g_signal_connect_swapped (space, "value-changed",
G_CALLBACK (gimp_preview_invalidate),
preview);
/* The offset entries */
offset = gimp_size_entry_new (3, /* number_of_fields */
unit, /* unit */
"%a", /* unit_format */
TRUE, /* menu_show_pixels */
TRUE, /* menu_show_percent */
FALSE, /* show_refval */
SPIN_BUTTON_WIDTH, /* spinbutton_usize */
GIMP_SIZE_ENTRY_UPDATE_SIZE); /* update_policy */
gtk_box_pack_start (GTK_BOX (vbox), offset, FALSE, FALSE, 0);
gtk_widget_show (offset);
gimp_size_entry_set_unit (GIMP_SIZE_ENTRY (offset), gimp_unit_pixel ());
/* set the resolution to the image resolution */
gimp_size_entry_set_resolution (GIMP_SIZE_ENTRY (offset), 0, xres, TRUE);
gimp_size_entry_set_resolution (GIMP_SIZE_ENTRY (offset), 1, yres, TRUE);
gimp_size_entry_set_resolution (GIMP_SIZE_ENTRY (offset), 2, xres, TRUE);
/* set the size (in pixels) that will be treated as 0% and 100% */
gimp_size_entry_set_size (GIMP_SIZE_ENTRY (offset), 0, 0.0, d_height);
gimp_size_entry_set_size (GIMP_SIZE_ENTRY (offset), 1, 0.0, d_width);
gimp_size_entry_set_size (GIMP_SIZE_ENTRY (offset), 2, 0.0, d_width);
/* set upper and lower limits (in pixels) */
gimp_size_entry_set_refval_boundaries (GIMP_SIZE_ENTRY (offset), 0, 0.0,
d_height);
gimp_size_entry_set_refval_boundaries (GIMP_SIZE_ENTRY (offset), 1, 0.0,
d_width);
gimp_size_entry_set_refval_boundaries (GIMP_SIZE_ENTRY (offset), 2, 0.0,
MAX (d_width, d_height));
gtk_grid_set_column_spacing (GTK_GRID (offset), 6);
/* initialize the values */
gimp_size_entry_set_refval (GIMP_SIZE_ENTRY (offset), 0, hoffset);
gimp_size_entry_set_refval (GIMP_SIZE_ENTRY (offset), 1, voffset);
gimp_size_entry_set_refval (GIMP_SIZE_ENTRY (offset), 2, ioffset);
/* attach labels */
label = gimp_size_entry_attach_label (GIMP_SIZE_ENTRY (offset), _("Offset:"),
1, 0, 0.0);
gtk_size_group_add_widget (group, label);
/* put a chain_button under the offset_entries */
chain_button = gimp_chain_button_new (GIMP_CHAIN_BOTTOM);
if (hoffset == voffset)
gimp_chain_button_set_active (GIMP_CHAIN_BUTTON (chain_button), TRUE);
gtk_grid_attach (GTK_GRID (offset), chain_button, 1, 2, 2, 1);
gtk_widget_show (chain_button);
/* connect to the 'value-changed' and "unit-changed" signals because
* we have to take care of keeping the entries in sync when the
* chainbutton is active
*/
g_signal_connect (offset, "value-changed",
G_CALLBACK (entry_callback),
chain_button);
g_signal_connect (offset, "unit-changed",
G_CALLBACK (entry_callback),
chain_button);
g_signal_connect_swapped (offset, "value-changed",
G_CALLBACK (gimp_preview_invalidate),
preview);
/* put a chain_button under the color_buttons */
grid->color_chain = gimp_chain_button_new (GIMP_CHAIN_BOTTOM);
if (gimp_color_is_perceptually_identical (hcolor, vcolor))
gimp_chain_button_set_active (GIMP_CHAIN_BUTTON (grid->color_chain), TRUE);
gtk_grid_attach (GTK_GRID (offset), grid->color_chain, 1, 4, 2, 1);
gtk_widget_show (grid->color_chain);
/* attach color selectors */
grid->hcolor_button = gimp_color_button_new (_("Horizontal Color"),
COLOR_BUTTON_WIDTH, 16,
hcolor,
GIMP_COLOR_AREA_SMALL_CHECKS);
gimp_color_button_set_update (GIMP_COLOR_BUTTON (grid->hcolor_button), TRUE);
gtk_grid_attach (GTK_GRID (offset), grid->hcolor_button, 1, 3, 1, 1);
gtk_widget_show (grid->hcolor_button);
color_config = gimp_get_color_configuration ();
gimp_color_button_set_color_config (GIMP_COLOR_BUTTON (grid->hcolor_button),
color_config);
g_signal_connect (grid->hcolor_button, "color-changed",
G_CALLBACK (color_callback),
grid);
g_signal_connect_swapped (grid->hcolor_button, "color-changed",
G_CALLBACK (gimp_preview_invalidate),
preview);
grid->vcolor_button = gimp_color_button_new (_("Vertical Color"),
COLOR_BUTTON_WIDTH, 16,
vcolor,
GIMP_COLOR_AREA_SMALL_CHECKS);
gimp_color_button_set_update (GIMP_COLOR_BUTTON (grid->vcolor_button), TRUE);
gtk_grid_attach (GTK_GRID (offset), grid->vcolor_button, 2, 3, 1, 1);
gtk_widget_show (grid->vcolor_button);
gimp_color_button_set_color_config (GIMP_COLOR_BUTTON (grid->vcolor_button),
color_config);
g_signal_connect (grid->vcolor_button, "color-changed",
G_CALLBACK (color_callback),
grid);
g_signal_connect_swapped (grid->vcolor_button, "color-changed",
G_CALLBACK (gimp_preview_invalidate),
preview);
grid->icolor_button = gimp_color_button_new (_("Intersection Color"),
COLOR_BUTTON_WIDTH, 16,
icolor,
GIMP_COLOR_AREA_SMALL_CHECKS);
gimp_color_button_set_update (GIMP_COLOR_BUTTON (grid->icolor_button), TRUE);
gtk_grid_attach (GTK_GRID (offset), grid->icolor_button, 3, 3, 1, 1);
gtk_widget_show (grid->icolor_button);
gimp_color_button_set_color_config (GIMP_COLOR_BUTTON (grid->icolor_button),
color_config);
g_object_unref (color_config);
g_object_unref (hcolor);
g_object_unref (vcolor);
g_object_unref (icolor);
g_signal_connect (grid->icolor_button, "color-changed",
G_CALLBACK (color_callback),
grid);
g_signal_connect_swapped (grid->icolor_button, "color-changed",
G_CALLBACK (gimp_preview_invalidate),
preview);
gtk_widget_show (dlg);
g_object_set_data (G_OBJECT (dlg), "width", width);
g_object_set_data (G_OBJECT (dlg), "space", space);
g_object_set_data (G_OBJECT (dlg), "offset", offset);
run = (gimp_dialog_run (GIMP_DIALOG (dlg)) == GTK_RESPONSE_OK);
if (run)
update_values (grid);
gtk_widget_destroy (dlg);
return run;
}
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