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gimp/plug-ins/common/grid.c

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/* The GIMP -- an 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 2 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, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
/* 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 SPIN_BUTTON_WIDTH 8
#define COLOR_BUTTON_WIDTH 55
/* Declare local functions. */
static void query (void);
static void run (const gchar *name,
gint nparams,
const GimpParam *param,
gint *nreturn_vals,
GimpParam **return_vals);
static guchar best_cmap_match (const guchar *cmap,
gint ncolors,
const GimpRGB *color);
static void grid (gint32 image_ID,
GimpDrawable *drawable,
GimpPreview *preview);
static gint dialog (gint32 image_ID,
GimpDrawable *drawable);
const GimpPlugInInfo PLUG_IN_INFO =
{
NULL, /* init_proc */
NULL, /* quit_proc */
query, /* query_proc */
run, /* run_proc */
};
static gint sx1, sy1, sx2, sy2;
static GtkWidget *main_dialog = NULL;
static GtkWidget *hcolor_button = NULL;
static GtkWidget *vcolor_button = NULL;
typedef struct
{
gint hwidth;
gint hspace;
gint hoffset;
GimpRGB hcolor;
gint vwidth;
gint vspace;
gint voffset;
GimpRGB vcolor;
gint iwidth;
gint ispace;
gint ioffset;
GimpRGB icolor;
} Config;
Config grid_cfg =
{
1, 16, 8, { 0.0, 0.0, 0.0, 1.0 }, /* horizontal */
1, 16, 8, { 0.0, 0.0, 0.0, 1.0 }, /* vertical */
0, 2, 6, { 0.0, 0.0, 0.0, 1.0 }, /* intersection */
};
MAIN ()
static
void query (void)
{
static const GimpParamDef args[] =
{
{ GIMP_PDB_INT32, "run-mode", "Interactive, non-interactive" },
{ GIMP_PDB_IMAGE, "image", "Input image" },
{ GIMP_PDB_DRAWABLE, "drawable", "Input drawable" },
{ GIMP_PDB_INT32, "hwidth", "Horizontal Width (>= 0)" },
{ GIMP_PDB_INT32, "hspace", "Horizontal Spacing (>= 1)" },
{ GIMP_PDB_INT32, "hoffset", "Horizontal Offset (>= 0)" },
{ GIMP_PDB_COLOR, "hcolor", "Horizontal Colour" },
{ GIMP_PDB_INT8, "hopacity", "Horizontal Opacity (0...255)" },
{ GIMP_PDB_INT32, "vwidth", "Vertical Width (>= 0)" },
{ GIMP_PDB_INT32, "vspace", "Vertical Spacing (>= 1)" },
{ GIMP_PDB_INT32, "voffset", "Vertical Offset (>= 0)" },
{ GIMP_PDB_COLOR, "vcolor", "Vertical Colour" },
{ GIMP_PDB_INT8, "vopacity", "Vertical Opacity (0...255)" },
{ GIMP_PDB_INT32, "iwidth", "Intersection Width (>= 0)" },
{ GIMP_PDB_INT32, "ispace", "Intersection Spacing (>= 0)" },
{ GIMP_PDB_INT32, "ioffset", "Intersection Offset (>= 0)" },
{ GIMP_PDB_COLOR, "icolor", "Intersection Colour" },
{ GIMP_PDB_INT8, "iopacity", "Intersection Opacity (0...255)" }
};
gimp_install_procedure (PLUG_IN_PROC,
N_("Draw a grid on the image"),
"Draws a grid using the specified colors. "
"The grid origin is the upper left corner.",
"Tim Newsome",
"Tim Newsome, Sven Neumann, Tom Rathborne, TC",
"1997 - 2000",
N_("_Grid..."),
"RGB*, GRAY*, INDEXED*",
GIMP_PLUGIN,
G_N_ELEMENTS (args), 0,
args, NULL);
gimp_plugin_menu_register (PLUG_IN_PROC, "<Image>/Filters/Render/Pattern");
}
static void
run (const gchar *name,
gint n_params,
const GimpParam *param,
gint *nreturn_vals,
GimpParam **return_vals)
{
static GimpParam values[1];
GimpDrawable *drawable;
gint32 image_ID;
GimpRunMode run_mode;
GimpPDBStatusType status = GIMP_PDB_SUCCESS;
*nreturn_vals = 1;
*return_vals = values;
INIT_I18N ();
run_mode = param[0].data.d_int32;
image_ID = param[1].data.d_int32;
drawable = gimp_drawable_get (param[2].data.d_drawable);
if (run_mode == GIMP_RUN_NONINTERACTIVE)
{
if (n_params != 18)
status = GIMP_PDB_CALLING_ERROR;
if (status == GIMP_PDB_SUCCESS)
{
grid_cfg.hwidth = MAX (0, param[3].data.d_int32);
grid_cfg.hspace = MAX (1, param[4].data.d_int32);
grid_cfg.hoffset = MAX (0, param[5].data.d_int32);
grid_cfg.hcolor = param[6].data.d_color;
gimp_rgb_set_alpha (&(grid_cfg.hcolor),
((double) param[7].data.d_int8) / 255.0);
grid_cfg.vwidth = MAX (0, param[8].data.d_int32);
grid_cfg.vspace = MAX (1, param[9].data.d_int32);
grid_cfg.voffset = MAX (0, param[10].data.d_int32);
grid_cfg.vcolor = param[11].data.d_color;
gimp_rgb_set_alpha (&(grid_cfg.vcolor),
((double) param[12].data.d_int8) / 255.0);
grid_cfg.iwidth = MAX (0, param[13].data.d_int32);
grid_cfg.ispace = MAX (0, param[14].data.d_int32);
grid_cfg.ioffset = MAX (0, param[15].data.d_int32);
grid_cfg.icolor = param[16].data.d_color;
gimp_rgb_set_alpha (&(grid_cfg.icolor),
((double) (guint) param[17].data.d_int8) / 255.0);
}
}
else
{
gimp_context_get_foreground (&grid_cfg.hcolor);
grid_cfg.vcolor = grid_cfg.icolor = grid_cfg.hcolor;
/* Possibly retrieve data */
gimp_get_data (PLUG_IN_PROC, &grid_cfg);
}
if (run_mode == GIMP_RUN_INTERACTIVE)
{
if (!dialog (image_ID, drawable))
{
/* The dialog was closed, or something similarly evil happened. */
status = GIMP_PDB_EXECUTION_ERROR;
}
}
if (grid_cfg.hspace <= 0 || grid_cfg.vspace <= 0)
{
status = GIMP_PDB_EXECUTION_ERROR;
}
if (status == GIMP_PDB_SUCCESS)
{
gimp_progress_init (_("Drawing grid"));
gimp_tile_cache_ntiles (2 * (drawable->width / gimp_tile_width () + 1));
grid (image_ID, drawable, NULL);
if (run_mode != GIMP_RUN_NONINTERACTIVE)
gimp_displays_flush ();
if (run_mode == GIMP_RUN_INTERACTIVE)
gimp_set_data (PLUG_IN_PROC, &grid_cfg, sizeof (grid_cfg));
gimp_drawable_detach (drawable);
}
values[0].type = GIMP_PDB_STATUS;
values[0].data.d_status = status;
}
#define MAXDIFF 195076
static guchar
best_cmap_match (const guchar *cmap,
gint ncolors,
const GimpRGB *color)
{
guchar cmap_index = 0;
gint max = MAXDIFF;
gint i, diff, sum;
guchar r, g, b;
gimp_rgb_get_uchar (color, &r, &g, &b);
for (i = 0; i < ncolors; i++)
{
diff = r - *cmap++;
sum = SQR (diff);
diff = g - *cmap++;
sum += SQR (diff);
diff = b - *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;
if (blend)
{
if (alpha)
bytes--;
for (b = 0; b < bytes; b++)
{
*p1 = *p1 * (1.0 - p2[3]/255.0) + p2[b] * p2[3]/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[3] / (255.0 - *p1));
*p1 = b > 255 ? 255 : b;
}
}
static void
grid (gint32 image_ID,
GimpDrawable *drawable,
GimpPreview *preview)
{
GimpPixelRgn srcPR, destPR;
gint bytes;
gint x_offset, y_offset;
guchar *dest, *buffer = NULL;
gint x, y;
gboolean alpha;
gboolean blend;
guchar hcolor[4];
guchar vcolor[4];
guchar icolor[4];
guchar *cmap;
gint ncolors;
gimp_rgba_get_uchar (&grid_cfg.hcolor,
hcolor, hcolor + 1, hcolor + 2, hcolor + 3);
gimp_rgba_get_uchar (&grid_cfg.vcolor,
vcolor, vcolor + 1, vcolor + 2, vcolor + 3);
gimp_rgba_get_uchar (&grid_cfg.icolor,
icolor, icolor + 1, icolor + 2, icolor + 3);
switch (gimp_image_base_type (image_ID))
{
case GIMP_RGB:
blend = TRUE;
break;
case GIMP_GRAY:
hcolor[0] = gimp_rgb_luminance_uchar (&grid_cfg.hcolor);
vcolor[0] = gimp_rgb_luminance_uchar (&grid_cfg.vcolor);
icolor[0] = gimp_rgb_luminance_uchar (&grid_cfg.icolor);
blend = TRUE;
break;
case GIMP_INDEXED:
cmap = gimp_image_get_colormap (image_ID, &ncolors);
hcolor[0] = best_cmap_match (cmap, ncolors, &grid_cfg.hcolor);
vcolor[0] = best_cmap_match (cmap, ncolors, &grid_cfg.vcolor);
icolor[0] = best_cmap_match (cmap, ncolors, &grid_cfg.icolor);
g_free (cmap);
blend = FALSE;
break;
default:
g_assert_not_reached ();
blend = FALSE;
}
bytes = drawable->bpp;
alpha = gimp_drawable_has_alpha (drawable->drawable_id);
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
{
gimp_drawable_mask_bounds (drawable->drawable_id, &sx1, &sy1, &sx2, &sy2);
gimp_pixel_rgn_init (&destPR,
drawable, 0, 0, sx2 - sx1, sy2 - sy1, TRUE, TRUE);
}
gimp_pixel_rgn_init (&srcPR,
drawable, 0, 0, sx2 - sx1, sy2 - sy1, FALSE, FALSE);
dest = g_new (guchar, (sx2 - sx1) * bytes);
for (y = sy1; y < sy2; y++)
{
gimp_pixel_rgn_get_row (&srcPR, dest, sx1, y, (sx2 - sx1));
y_offset = y - grid_cfg.voffset;
while (y_offset < 0)
y_offset += grid_cfg.vspace;
if ((y_offset +
(grid_cfg.hwidth / 2)) % grid_cfg.vspace < grid_cfg.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 = grid_cfg.hspace + x - grid_cfg.hoffset;
while (x_offset < 0)
x_offset += grid_cfg.hspace;
if ((x_offset +
(grid_cfg.vwidth / 2)) % grid_cfg.hspace < grid_cfg.vwidth)
{
pix_composite (&dest[(x-sx1) * bytes],
vcolor, bytes, blend, alpha);
}
if ((x_offset +
(grid_cfg.iwidth / 2)) % grid_cfg.hspace < grid_cfg.iwidth
&&
((y_offset % grid_cfg.vspace >= grid_cfg.ispace
&&
y_offset % grid_cfg.vspace < grid_cfg.ioffset)
||
(grid_cfg.vspace -
(y_offset % grid_cfg.vspace) >= grid_cfg.ispace
&&
grid_cfg.vspace -
(y_offset % grid_cfg.vspace) < grid_cfg.ioffset)))
{
pix_composite (&dest[(x-sx1) * bytes],
icolor, bytes, blend, alpha);
}
}
if ((y_offset +
(grid_cfg.iwidth / 2)) % grid_cfg.vspace < grid_cfg.iwidth)
{
for (x = sx1; x < sx2; x++)
{
x_offset = grid_cfg.hspace + x - grid_cfg.hoffset;
while (x_offset < 0)
x_offset += grid_cfg.hspace;
if ((x_offset % grid_cfg.hspace >= grid_cfg.ispace
&&
x_offset % grid_cfg.hspace < grid_cfg.ioffset)
||
(grid_cfg.hspace -
(x_offset % grid_cfg.hspace) >= grid_cfg.ispace
&&
grid_cfg.hspace -
(x_offset % grid_cfg.hspace) < grid_cfg.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
{
gimp_pixel_rgn_set_row (&destPR, dest, sx1, y, (sx2 - sx1));
if (y % 16 == 0)
gimp_progress_update ((gdouble) y / (gdouble) (sy2 - sy1));
}
}
g_free (dest);
if (preview)
{
gimp_preview_draw_buffer (preview, buffer, bytes * (sx2 - sx1));
g_free (buffer);
}
else
{
gimp_drawable_flush (drawable);
gimp_drawable_merge_shadow (drawable->drawable_id, TRUE);
gimp_drawable_update (drawable->drawable_id,
sx1, sy1, sx2 - sx1, sy2 - sy1);
}
}
/***************************************************
* GUI stuff
*/
static void
update_values (void)
{
GtkWidget *entry;
entry = g_object_get_data (G_OBJECT (main_dialog), "width");
grid_cfg.hwidth =
RINT (gimp_size_entry_get_refval (GIMP_SIZE_ENTRY (entry), 0));
grid_cfg.vwidth =
RINT (gimp_size_entry_get_refval (GIMP_SIZE_ENTRY (entry), 1));
grid_cfg.iwidth =
RINT (gimp_size_entry_get_refval (GIMP_SIZE_ENTRY (entry), 2));
entry = g_object_get_data (G_OBJECT (main_dialog), "space");
grid_cfg.hspace =
RINT (gimp_size_entry_get_refval (GIMP_SIZE_ENTRY (entry), 0));
grid_cfg.vspace =
RINT (gimp_size_entry_get_refval (GIMP_SIZE_ENTRY (entry), 1));
grid_cfg.ispace =
RINT (gimp_size_entry_get_refval (GIMP_SIZE_ENTRY (entry), 2));
entry = g_object_get_data (G_OBJECT (main_dialog), "offset");
grid_cfg.hoffset =
RINT (gimp_size_entry_get_refval (GIMP_SIZE_ENTRY (entry), 0));
grid_cfg.voffset =
RINT (gimp_size_entry_get_refval (GIMP_SIZE_ENTRY (entry), 1));
grid_cfg.ioffset =
RINT (gimp_size_entry_get_refval (GIMP_SIZE_ENTRY (entry), 2));
}
static void
update_preview (GimpPreview *preview,
GimpDrawable *drawable)
{
update_values ();
grid (gimp_drawable_get_image (drawable->drawable_id), drawable, 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)
{
if (gimp_chain_button_get_active (GIMP_CHAIN_BUTTON (data)))
{
GimpRGB color;
gimp_color_button_get_color (GIMP_COLOR_BUTTON (widget), &color);
if (widget == vcolor_button)
gimp_color_button_set_color (GIMP_COLOR_BUTTON (hcolor_button), &color);
else if (widget == hcolor_button)
gimp_color_button_set_color (GIMP_COLOR_BUTTON (vcolor_button), &color);
}
}
static gint
dialog (gint32 image_ID,
GimpDrawable *drawable)
{
GtkWidget *dlg;
GtkWidget *main_vbox;
GtkWidget *vbox;
GtkSizeGroup *group;
GtkWidget *label;
GtkWidget *preview;
GtkWidget *button;
GtkWidget *width;
GtkWidget *space;
GtkWidget *offset;
GtkWidget *chain_button;
GtkWidget *table;
GimpUnit unit;
gdouble xres;
gdouble yres;
gboolean run;
g_return_val_if_fail (main_dialog == NULL, FALSE);
gimp_ui_init (PLUG_IN_BINARY, TRUE);
main_dialog = dlg = gimp_dialog_new (_("Grid"), PLUG_IN_BINARY,
NULL, 0,
gimp_standard_help_func, PLUG_IN_PROC,
GTK_STOCK_CANCEL, GTK_RESPONSE_CANCEL,
GTK_STOCK_OK, GTK_RESPONSE_OK,
NULL);
gtk_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_ID, &xres, &yres);
unit = gimp_image_get_unit (image_ID);
main_vbox = gtk_vbox_new (FALSE, 12);
gtk_container_set_border_width (GTK_CONTAINER (main_vbox), 12);
gtk_container_add (GTK_CONTAINER (GTK_DIALOG (dlg)->vbox), main_vbox);
gtk_widget_show (main_vbox);
preview = gimp_drawable_preview_new (drawable, NULL);
gtk_box_pack_start (GTK_BOX (main_vbox), preview, TRUE, TRUE, 0);
gtk_widget_show (preview);
g_signal_connect (preview, "invalidated",
G_CALLBACK (update_preview),
drawable);
vbox = gtk_vbox_new (FALSE, 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, drawable->width);
gimp_size_entry_set_size (GIMP_SIZE_ENTRY (width), 1, 0.0, drawable->height);
gimp_size_entry_set_size (GIMP_SIZE_ENTRY (width), 2, 0.0, drawable->width);
/* set upper and lower limits (in pixels) */
gimp_size_entry_set_refval_boundaries (GIMP_SIZE_ENTRY (width), 0, 0.0,
drawable->width);
gimp_size_entry_set_refval_boundaries (GIMP_SIZE_ENTRY (width), 1, 0.0,
drawable->height);
gimp_size_entry_set_refval_boundaries (GIMP_SIZE_ENTRY (width), 2, 0.0,
MAX (drawable->width,
drawable->height));
gtk_table_set_row_spacing (GTK_TABLE (width), 0, 6);
gtk_table_set_col_spacings (GTK_TABLE (width), 6);
gtk_table_set_col_spacing (GTK_TABLE (width), 2, 12);
/* initialize the values */
gimp_size_entry_set_refval (GIMP_SIZE_ENTRY (width), 0, grid_cfg.hwidth);
gimp_size_entry_set_refval (GIMP_SIZE_ENTRY (width), 1, grid_cfg.vwidth);
gimp_size_entry_set_refval (GIMP_SIZE_ENTRY (width), 2, grid_cfg.iwidth);
/* attach labels */
gimp_size_entry_attach_label (GIMP_SIZE_ENTRY (width), _("Horizontal"),
0, 1, 0.0);
gimp_size_entry_attach_label (GIMP_SIZE_ENTRY (width), _("Vertical"),
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 (grid_cfg.hwidth == grid_cfg.vwidth)
gimp_chain_button_set_active (GIMP_CHAIN_BUTTON (chain_button), TRUE);
gtk_table_attach_defaults (GTK_TABLE (width), chain_button, 1, 3, 2, 3);
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, drawable->width);
gimp_size_entry_set_size (GIMP_SIZE_ENTRY (space), 1, 0.0, drawable->height);
gimp_size_entry_set_size (GIMP_SIZE_ENTRY (space), 2, 0.0, drawable->width);
/* set upper and lower limits (in pixels) */
gimp_size_entry_set_refval_boundaries (GIMP_SIZE_ENTRY (space), 0, 1.0,
drawable->width);
gimp_size_entry_set_refval_boundaries (GIMP_SIZE_ENTRY (space), 1, 1.0,
drawable->height);
gimp_size_entry_set_refval_boundaries (GIMP_SIZE_ENTRY (space), 2, 0.0,
MAX (drawable->width,
drawable->height));
gtk_table_set_col_spacings (GTK_TABLE (space), 6);
gtk_table_set_col_spacing (GTK_TABLE (space), 2, 12);
/* initialize the values */
gimp_size_entry_set_refval (GIMP_SIZE_ENTRY (space), 0, grid_cfg.hspace);
gimp_size_entry_set_refval (GIMP_SIZE_ENTRY (space), 1, grid_cfg.vspace);
gimp_size_entry_set_refval (GIMP_SIZE_ENTRY (space), 2, grid_cfg.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 (grid_cfg.hspace == grid_cfg.vspace)
gimp_chain_button_set_active (GIMP_CHAIN_BUTTON (chain_button), TRUE);
gtk_table_attach_defaults (GTK_TABLE (space), chain_button, 1, 3, 2, 3);
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, drawable->width);
gimp_size_entry_set_size (GIMP_SIZE_ENTRY (offset), 1, 0.0, drawable->height);
gimp_size_entry_set_size (GIMP_SIZE_ENTRY (offset), 2, 0.0, drawable->width);
/* set upper and lower limits (in pixels) */
gimp_size_entry_set_refval_boundaries (GIMP_SIZE_ENTRY (offset), 0, 0.0,
drawable->width);
gimp_size_entry_set_refval_boundaries (GIMP_SIZE_ENTRY (offset), 1, 0.0,
drawable->height);
gimp_size_entry_set_refval_boundaries (GIMP_SIZE_ENTRY (offset), 2, 0.0,
MAX (drawable->width,
drawable->height));
gtk_table_set_col_spacings (GTK_TABLE (offset), 6);
gtk_table_set_col_spacing (GTK_TABLE (offset), 2, 12);
/* initialize the values */
gimp_size_entry_set_refval (GIMP_SIZE_ENTRY (offset), 0, grid_cfg.hoffset);
gimp_size_entry_set_refval (GIMP_SIZE_ENTRY (offset), 1, grid_cfg.voffset);
gimp_size_entry_set_refval (GIMP_SIZE_ENTRY (offset), 2, grid_cfg.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);
/* this is a weird hack: we put a table into the offset table */
table = gtk_table_new (3, 3, FALSE);
gtk_table_attach_defaults (GTK_TABLE (offset), table, 1, 4, 2, 3);
gtk_table_set_row_spacing (GTK_TABLE (table), 0, 10);
gtk_table_set_col_spacing (GTK_TABLE (table), 1, 12);
/* put a chain_button under the offset_entries */
chain_button = gimp_chain_button_new (GIMP_CHAIN_BOTTOM);
if (grid_cfg.hoffset == grid_cfg.voffset)
gimp_chain_button_set_active (GIMP_CHAIN_BUTTON (chain_button), TRUE);
gtk_table_attach_defaults (GTK_TABLE (table), chain_button, 0, 2, 0, 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 */
chain_button = gimp_chain_button_new (GIMP_CHAIN_BOTTOM);
if (gimp_rgba_distance (&grid_cfg.hcolor, &grid_cfg.vcolor) < 0.0001)
gimp_chain_button_set_active (GIMP_CHAIN_BUTTON (chain_button), TRUE);
gtk_table_attach_defaults (GTK_TABLE (table), chain_button, 0, 2, 2, 3);
gtk_widget_show (chain_button);
/* attach color selectors */
hcolor_button = gimp_color_button_new (_("Horizontal Color"),
COLOR_BUTTON_WIDTH, 16,
&grid_cfg.hcolor,
GIMP_COLOR_AREA_SMALL_CHECKS);
gimp_color_button_set_update (GIMP_COLOR_BUTTON (hcolor_button), TRUE);
gtk_table_attach_defaults (GTK_TABLE (table), hcolor_button, 0, 1, 1, 2);
gtk_widget_show (hcolor_button);
g_signal_connect (hcolor_button, "color-changed",
G_CALLBACK (gimp_color_button_get_color),
&grid_cfg.hcolor);
g_signal_connect (hcolor_button, "color-changed",
G_CALLBACK (color_callback),
chain_button);
g_signal_connect_swapped (hcolor_button, "color-changed",
G_CALLBACK (gimp_preview_invalidate),
preview);
vcolor_button = gimp_color_button_new (_("Vertical Color"),
COLOR_BUTTON_WIDTH, 16,
&grid_cfg.vcolor,
GIMP_COLOR_AREA_SMALL_CHECKS);
gimp_color_button_set_update (GIMP_COLOR_BUTTON (vcolor_button), TRUE);
gtk_table_attach_defaults (GTK_TABLE (table), vcolor_button, 1, 2, 1, 2);
gtk_widget_show (vcolor_button);
g_signal_connect (vcolor_button, "color-changed",
G_CALLBACK (gimp_color_button_get_color),
&grid_cfg.vcolor);
g_signal_connect (vcolor_button, "color-changed",
G_CALLBACK (color_callback),
chain_button);
g_signal_connect_swapped (vcolor_button, "color-changed",
G_CALLBACK (gimp_preview_invalidate),
preview);
button = gimp_color_button_new (_("Intersection Color"),
COLOR_BUTTON_WIDTH, 16,
&grid_cfg.icolor,
GIMP_COLOR_AREA_SMALL_CHECKS);
gimp_color_button_set_update (GIMP_COLOR_BUTTON (button), TRUE);
gtk_table_attach_defaults (GTK_TABLE (table), button, 2, 3, 1, 2);
gtk_widget_show (button);
g_signal_connect (button, "color-changed",
G_CALLBACK (gimp_color_button_get_color),
&grid_cfg.icolor);
g_signal_connect_swapped (button, "color-changed",
G_CALLBACK (gimp_preview_invalidate),
preview);
gtk_widget_show (table);
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 ();
gtk_widget_destroy (dlg);
return run;
}
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