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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 <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <gtk/gtk.h>
#include <libgimp/gimp.h>
#include <libgimp/gimpui.h>
#include "libgimp/stdplugins-intl.h"
#define SPIN_BUTTON_WIDTH 75
#define COLOR_BUTTON_WIDTH 55
#define PREVIEW_SIZE 128
/* Declare local functions. */
static void query (void);
static void run (gchar *name,
gint nparams,
GimpParam *param,
gint *nreturn_vals,
GimpParam **return_vals);
static guchar best_cmap_match (guchar *cmap,
gint ncolors,
GimpRGB *color);
static void doit (gint32 image_ID,
GimpDrawable *drawable,
gboolean preview_mode);
static gint dialog (gint32 image_ID,
GimpDrawable *drawable);
static GtkWidget * preview_widget (GimpDrawable *drawable);
static void fill_preview (GtkWidget *preview_widget,
GimpDrawable *drawable);
GimpPlugInInfo PLUG_IN_INFO =
{
NULL, /* init_proc */
NULL, /* quit_proc */
query, /* query_proc */
run, /* run_proc */
};
gint sx1, sy1, sx2, sy2;
gint run_flag = FALSE;
static GtkWidget *hcolor_button;
static GtkWidget *vcolor_button;
static guchar *preview_bits;
static GtkWidget *preview;
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, 0.5, 1.0 }, /* horizontal */
1, 16, 8, { 0.0, 0.0, 0.5, 1.0 }, /* vertical */
0, 2, 6, { 0.0, 0.0, 1.0, 1.0 }, /* intersection */
};
MAIN ()
static
void query (void)
{
static 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)" }
};
static gint nargs = sizeof (args) / sizeof (args[0]);
gimp_install_procedure ("plug_in_grid",
"Draws a grid.",
"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_("<Image>/Filters/Render/Pattern/Grid..."),
"RGB*, GRAY*, INDEXED*",
GIMP_PLUGIN,
nargs, 0,
args, NULL);
}
static void
run (gchar *name,
gint n_params,
GimpParam *param,
gint *nreturn_vals,
GimpParam **return_vals)
{
static GimpParam values[1];
GimpDrawable *drawable;
gint32 image_ID;
GimpRunModeType run_mode;
GimpPDBStatusType status = GIMP_PDB_SUCCESS;
*nreturn_vals = 1;
*return_vals = values;
INIT_I18N_UI();
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;
/* FIXME: this used to be the alpha value
param[7].data.d_int8;
*/
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;
/* FIXME: this used to be the alpha value
param[12].data.d_int8;
*/
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;
/* FIXME: this used to be the alpha value
param[17].data.d_int8);
*/
}
}
else
{
/* Possibly retrieve data */
gimp_get_data ("plug_in_grid", &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;
}
g_free(preview_bits);
}
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));
doit (image_ID, drawable, FALSE);
if (run_mode != GIMP_RUN_NONINTERACTIVE)
gimp_displays_flush ();
if (run_mode == GIMP_RUN_INTERACTIVE)
gimp_set_data ("plug_in_grid", &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 (guchar *cmap,
gint ncolors,
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;
}
G_INLINE_FUNC void
pix_composite (guchar *p1,
guchar p2[4],
gint bytes,
gboolean blend,
gboolean alpha)
{
gint b;
if (alpha)
{
bytes--;
}
if (blend)
{
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 * ((double)p2[3] / (255.0 - *p1));
*p1 = b > 255 ? 255 : b;
}
}
static void
doit (gint32 image_ID,
GimpDrawable *drawable,
gboolean preview_mode)
{
GimpPixelRgn srcPR, destPR;
gint width, height, bytes;
gint x_offset, y_offset;
guchar *dest;
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);
if (preview_mode)
{
blend = TRUE;
}
else
{
switch (gimp_image_base_type (image_ID))
{
case GIMP_RGB:
blend = TRUE;
break;
case GIMP_GRAY:
hcolor[0] = gimp_rgb_intensity_uchar (&grid_cfg.hcolor);
vcolor[0] = gimp_rgb_intensity_uchar (&grid_cfg.vcolor);
vcolor[0] = gimp_rgb_intensity_uchar (&grid_cfg.vcolor);
blend = TRUE;
break;
case GIMP_INDEXED:
cmap = gimp_image_get_cmap (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;
}
}
if (preview_mode)
{
sx1 = sy1 = 0;
sx2 = GTK_PREVIEW (preview)->buffer_width;
sy2 = GTK_PREVIEW (preview)->buffer_height;
width = sx2;
height = sy2;
alpha = 0;
bytes = GTK_PREVIEW (preview)->bpp;
}
else
{
/* Get the input area. This is the bounding box of the selection in
* the image (or the entire image if there is no selection).
*/
gimp_drawable_mask_bounds (drawable->id, &sx1, &sy1, &sx2, &sy2);
width = gimp_drawable_width (drawable->id);
height = gimp_drawable_height (drawable->id);
alpha = gimp_drawable_has_alpha (drawable->id);
bytes = drawable->bpp;
/* initialize the pixel regions */
gimp_pixel_rgn_init (&srcPR, drawable, 0, 0, width, height, FALSE, FALSE);
gimp_pixel_rgn_init (&destPR, drawable, 0, 0, width, height, TRUE, TRUE);
}
dest = g_malloc (width * bytes);
for (y = sy1; y < sy2; y++)
{
if (preview_mode)
memcpy (dest,
preview_bits + (GTK_PREVIEW (preview)->rowstride * y),
GTK_PREVIEW (preview)->rowstride);
else
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.vwidth / 2)) % grid_cfg.vspace < grid_cfg.vwidth)
{
for (x = sx1; x < sx2; x++)
{
pix_composite (&dest[(x-sx1) * bytes], hcolor, 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);
}
}
}
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.hwidth / 2)) % grid_cfg.hspace < grid_cfg.hwidth)
{
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 (preview_mode)
{
memcpy (GTK_PREVIEW (preview)->buffer + (GTK_PREVIEW (preview)->rowstride * y),
dest,
GTK_PREVIEW (preview)->rowstride);
}
else
{
gimp_pixel_rgn_set_row (&destPR, dest, sx1, y, (sx2-sx1) );
gimp_progress_update ((double) y / (double) (sy2 - sy1));
}
}
g_free (dest);
/* update the timred region */
if (preview_mode)
{
gtk_widget_queue_draw (preview);
}
else
{
gimp_drawable_flush (drawable);
gimp_drawable_merge_shadow (drawable->id, TRUE);
gimp_drawable_update (drawable->id, sx1, sy1, sx2 - sx1, sy2 - sy1);
}
}
/***************************************************
* GUI stuff
*/
static void
ok_callback (GtkWidget *widget,
gpointer data)
{
GtkWidget *entry;
run_flag = TRUE;
entry = gtk_object_get_data (GTK_OBJECT (data), "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 = gtk_object_get_data (GTK_OBJECT (data), "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 = gtk_object_get_data (GTK_OBJECT (data), "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));
gtk_widget_destroy (GTK_WIDGET (data));
}
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
{
if (new_x != x)
x = new_x;
if (new_y != y)
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 void
update_preview_callback (GtkWidget *widget,
gpointer data)
{
GimpDrawable *drawable;
GtkWidget *entry;
drawable = gtk_object_get_data (GTK_OBJECT (widget), "drawable");
entry = gtk_object_get_data (GTK_OBJECT (widget), "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 = gtk_object_get_data (GTK_OBJECT (widget), "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 = gtk_object_get_data (GTK_OBJECT (widget), "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));
doit (0, drawable, TRUE); /* we can set image_ID = 0 'cause we dont use it */
}
static gint
dialog (gint32 image_ID,
GimpDrawable *drawable)
{
GtkWidget *dlg;
GtkWidget *main_hbox;
GtkWidget *main_vbox;
GtkWidget *frame;
GtkWidget *abox;
GtkWidget *button;
GtkWidget *hbox;
GtkWidget *width;
GtkWidget *space;
GtkWidget *offset;
GtkWidget *chain_button;
GtkWidget *table;
GtkWidget *align;
GimpUnit unit;
gdouble xres;
gdouble yres;
gimp_ui_init ("grid", TRUE);
dlg = gimp_dialog_new (_("Grid"), "grid",
gimp_standard_help_func, "filters/grid.html",
GTK_WIN_POS_MOUSE,
FALSE, TRUE, FALSE,
_("OK"), ok_callback,
NULL, NULL, NULL, TRUE, FALSE,
_("Cancel"), gtk_widget_destroy,
NULL, 1, NULL, FALSE, TRUE,
NULL);
gtk_signal_connect (GTK_OBJECT (dlg), "destroy",
GTK_SIGNAL_FUNC (gtk_main_quit),
NULL);
/* Get the image resolution and unit */
gimp_image_get_resolution (image_ID, &xres, &yres);
unit = gimp_image_get_unit (image_ID);
/* main hbox: [ ][ ] */
main_hbox = gtk_hbox_new (FALSE, 2);
gtk_box_pack_start (GTK_BOX (GTK_DIALOG (dlg)->vbox), main_hbox, FALSE, FALSE, 4);
/* hbox created and packed into the dialog */
/* make a nice frame */
frame = gtk_frame_new (_("Preview"));
gtk_container_set_border_width (GTK_CONTAINER (frame), 4);
gtk_box_pack_start (GTK_BOX (main_hbox), frame, FALSE, FALSE, 0);
gtk_widget_show (frame);
hbox = gtk_vbox_new (FALSE, 2);
gtk_container_set_border_width (GTK_CONTAINER (hbox), 0);
gtk_container_add (GTK_CONTAINER (frame), hbox);
gtk_widget_show (hbox);
/* row 1 */
abox = gtk_alignment_new (0.5, 0.5, 0.0, 0.0);
gtk_container_set_border_width (GTK_CONTAINER (abox), 4);
gtk_box_pack_start (GTK_BOX (hbox), abox, TRUE, TRUE, 0);
gtk_widget_show (abox);
frame = gtk_frame_new (NULL);
gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_IN);
gtk_container_add (GTK_CONTAINER (abox), frame);
gtk_widget_show (frame);
preview = preview_widget (drawable); /* we are here */
gtk_container_add (GTK_CONTAINER (frame), preview);
doit (image_ID, drawable, TRUE); /* render preview */
gtk_widget_show (preview);
/* row 2 */
abox = gtk_alignment_new (0.5, 0.5, 0.0, 0.0);
gtk_container_set_border_width (GTK_CONTAINER (abox), 4);
gtk_container_add (GTK_CONTAINER (hbox), abox);
gtk_widget_show (abox);
button = gtk_button_new_with_label (_("Update Preview"));
gtk_misc_set_padding (GTK_MISC (GTK_BIN (button)->child), 2, 0);
gtk_object_set_data (GTK_OBJECT (button), "drawable", drawable);
gtk_signal_connect (GTK_OBJECT (button), "clicked",
GTK_SIGNAL_FUNC (update_preview_callback),
NULL);
gtk_container_add (GTK_CONTAINER (abox), button);
gtk_widget_show (button);
/* left side of the UI is done */
/* right side */
frame = gtk_frame_new (_("Parameter Settings"));
gtk_container_set_border_width (GTK_CONTAINER (frame), 4);
gtk_box_pack_start (GTK_BOX (main_hbox), frame, FALSE, FALSE, 0);
gtk_widget_show (frame);
main_vbox = gtk_vbox_new (FALSE, 4);
gtk_container_set_border_width (GTK_CONTAINER (main_vbox), 6);
gtk_container_add (GTK_CONTAINER (frame), main_vbox);
gtk_widget_show (main_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_object_set_data (GTK_OBJECT (button), "width", 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, (gdouble)(drawable->width));
gimp_size_entry_set_size (GIMP_SIZE_ENTRY (width), 1, 0.0, (gdouble)(drawable->height));
gimp_size_entry_set_size (GIMP_SIZE_ENTRY (width), 2, 0.0, (gdouble)(drawable->width));
/* set upper and lower limits (in pixels) */
gimp_size_entry_set_refval_boundaries (GIMP_SIZE_ENTRY (width), 0, 0.0,
(gdouble)(drawable->width));
gimp_size_entry_set_refval_boundaries (GIMP_SIZE_ENTRY (width), 1, 0.0,
(gdouble)(drawable->height));
gimp_size_entry_set_refval_boundaries (GIMP_SIZE_ENTRY (width), 2, 0.0,
(gdouble)(MAX (drawable->width, drawable->height)));
gtk_table_set_col_spacing (GTK_TABLE (width), 2, 12);
gtk_table_set_col_spacing (GTK_TABLE (width), 3, 12);
/* initialize the values */
gimp_size_entry_set_refval (GIMP_SIZE_ENTRY (width), 0, (gdouble)grid_cfg.hwidth);
gimp_size_entry_set_refval (GIMP_SIZE_ENTRY (width), 1, (gdouble)grid_cfg.vwidth);
gimp_size_entry_set_refval (GIMP_SIZE_ENTRY (width), 2, (gdouble)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);
gimp_size_entry_attach_label (GIMP_SIZE_ENTRY (width), _("Width: "), 1, 0, 0.0);
/* 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 */
gtk_signal_connect (GTK_OBJECT (width), "value_changed",
(GtkSignalFunc) entry_callback, chain_button);
abox = gtk_alignment_new (1.0, 0.5, 0.0, 0.0);
gtk_container_add (GTK_CONTAINER (abox), width);
gtk_box_pack_start (GTK_BOX (main_vbox), abox, FALSE, FALSE, 4);
gtk_widget_show (width);
gtk_widget_show (abox);
/* 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_object_set_data (GTK_OBJECT (button), "space", 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, (gdouble)(drawable->width));
gimp_size_entry_set_size (GIMP_SIZE_ENTRY (space), 1, 0.0, (gdouble)(drawable->height));
gimp_size_entry_set_size (GIMP_SIZE_ENTRY (space), 2, 0.0, (gdouble)(drawable->width));
/* set upper and lower limits (in pixels) */
gimp_size_entry_set_refval_boundaries (GIMP_SIZE_ENTRY (space), 0, 1.0,
(gdouble)(drawable->width));
gimp_size_entry_set_refval_boundaries (GIMP_SIZE_ENTRY (space), 1, 1.0,
(gdouble)(drawable->height));
gimp_size_entry_set_refval_boundaries (GIMP_SIZE_ENTRY (space), 2, 0.0,
(gdouble)(MAX (drawable->width, drawable->height)));
gtk_table_set_col_spacing (GTK_TABLE (space), 2, 12);
gtk_table_set_col_spacing (GTK_TABLE (space), 3, 12);
/* initialize the values */
gimp_size_entry_set_refval (GIMP_SIZE_ENTRY (space), 0, (gdouble)grid_cfg.hspace);
gimp_size_entry_set_refval (GIMP_SIZE_ENTRY (space), 1, (gdouble)grid_cfg.vspace);
gimp_size_entry_set_refval (GIMP_SIZE_ENTRY (space), 2, (gdouble)grid_cfg.ispace);
/* attach labels */
gimp_size_entry_attach_label (GIMP_SIZE_ENTRY (space), _("Spacing: "), 1, 0, 0.0);
/* 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 */
gtk_signal_connect (GTK_OBJECT (space), "value_changed",
(GtkSignalFunc) entry_callback, chain_button);
gtk_signal_connect (GTK_OBJECT (space), "unit_changed",
(GtkSignalFunc) entry_callback, chain_button);
abox = gtk_alignment_new (1.0, 0.5, 0.0, 0.0);
gtk_container_add (GTK_CONTAINER (abox), space);
gtk_box_pack_start (GTK_BOX (main_vbox), abox, FALSE, FALSE, 4);
gtk_widget_show (space);
gtk_widget_show (abox);
/* 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_object_set_data (GTK_OBJECT (button), "offset", 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, (gdouble)(drawable->width));
gimp_size_entry_set_size (GIMP_SIZE_ENTRY (offset), 1, 0.0, (gdouble)(drawable->height));
gimp_size_entry_set_size (GIMP_SIZE_ENTRY (offset), 2, 0.0, (gdouble)(drawable->width));
/* set upper and lower limits (in pixels) */
gimp_size_entry_set_refval_boundaries (GIMP_SIZE_ENTRY (offset), 0, 0.0,
(gdouble)(drawable->width));
gimp_size_entry_set_refval_boundaries (GIMP_SIZE_ENTRY (offset), 1, 0.0,
(gdouble)(drawable->height));
gimp_size_entry_set_refval_boundaries (GIMP_SIZE_ENTRY (offset), 2, 0.0,
(gdouble)(MAX (drawable->width, drawable->height)));
gtk_table_set_col_spacing (GTK_TABLE (offset), 2, 12);
gtk_table_set_col_spacing (GTK_TABLE (offset), 3, 12);
/* initialize the values */
gimp_size_entry_set_refval (GIMP_SIZE_ENTRY (offset), 0, (gdouble)grid_cfg.hoffset);
gimp_size_entry_set_refval (GIMP_SIZE_ENTRY (offset), 1, (gdouble)grid_cfg.voffset);
gimp_size_entry_set_refval (GIMP_SIZE_ENTRY (offset), 2, (gdouble)grid_cfg.ioffset);
/* attach labels */
gimp_size_entry_attach_label (GIMP_SIZE_ENTRY (offset), _("Offset: "), 1, 0, 0.0);
/* 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 */
gtk_signal_connect (GTK_OBJECT (offset), "value_changed",
(GtkSignalFunc) entry_callback, chain_button);
gtk_signal_connect (GTK_OBJECT (offset), "unit_changed",
(GtkSignalFunc) entry_callback, chain_button);
/* 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);
gtk_signal_connect (GTK_OBJECT (hcolor_button), "color_changed",
GTK_SIGNAL_FUNC (gimp_color_button_get_color),
&grid_cfg.hcolor);
gtk_signal_connect (GTK_OBJECT (hcolor_button), "color_changed",
GTK_SIGNAL_FUNC (color_callback),
chain_button);
align = gtk_alignment_new (0.0, 0.5, 0, 0);
gtk_container_add (GTK_CONTAINER (align), hcolor_button);
gtk_table_attach_defaults (GTK_TABLE (table), align, 0, 1, 1, 2);
gtk_widget_show (hcolor_button);
gtk_widget_show (align);
vcolor_button = gimp_color_button_new (_("Vertical Color"),
COLOR_BUTTON_WIDTH, 16,
&grid_cfg.vcolor,
GIMP_COLOR_AREA_SMALL_CHECKS);
gtk_signal_connect (GTK_OBJECT (vcolor_button), "color_changed",
GTK_SIGNAL_FUNC (gimp_color_button_get_color),
&grid_cfg.vcolor);
gtk_signal_connect (GTK_OBJECT (vcolor_button), "color_changed",
GTK_SIGNAL_FUNC (color_callback),
chain_button);
align = gtk_alignment_new (0.0, 0.5, 0, 0);
gtk_container_add (GTK_CONTAINER (align), vcolor_button);
gtk_table_attach_defaults (GTK_TABLE (table), align, 1, 2, 1, 2);
gtk_widget_show (vcolor_button);
gtk_widget_show (align);
button = gimp_color_button_new (_("Intersection Color"),
COLOR_BUTTON_WIDTH, 16,
&grid_cfg.icolor,
GIMP_COLOR_AREA_SMALL_CHECKS);
gtk_signal_connect (GTK_OBJECT (button), "color_changed",
GTK_SIGNAL_FUNC (gimp_color_button_get_color),
&grid_cfg.icolor);
align = gtk_alignment_new (0.0, 0.5, 0, 0);
gtk_container_add (GTK_CONTAINER (align), button);
gtk_table_attach_defaults (GTK_TABLE (table), align, 2, 3, 1, 2);
gtk_widget_show (button);
gtk_widget_show (align);
gtk_widget_show (table);
abox = gtk_alignment_new (1.0, 0.5, 0.0, 0.0);
gtk_container_add (GTK_CONTAINER (abox), offset);
gtk_box_pack_start (GTK_BOX (main_vbox), abox, FALSE, FALSE, 4);
gtk_widget_show (offset);
gtk_widget_show (abox);
gtk_widget_show (main_hbox);
gtk_widget_show (dlg);
gtk_object_set_data (GTK_OBJECT (dlg), "width", width);
gtk_object_set_data (GTK_OBJECT (dlg), "space", space);
gtk_object_set_data (GTK_OBJECT (dlg), "offset", offset);
gtk_main ();
gdk_flush ();
return run_flag;
}
static GtkWidget *
preview_widget (GimpDrawable *drawable)
{
gint size;
GtkWidget *preview;
preview = gtk_preview_new (GTK_PREVIEW_COLOR);
fill_preview (preview, drawable);
size = GTK_PREVIEW (preview)->rowstride * GTK_PREVIEW (preview)->buffer_height;
preview_bits = g_malloc (size);
memcpy (preview_bits, GTK_PREVIEW (preview)->buffer, size);
return preview;
}
static void
fill_preview (GtkWidget *widget,
GimpDrawable *drawable)
{
GimpPixelRgn srcPR;
gint width;
gint height;
gint x1, x2, y1, y2;
gint bpp;
gint x, y;
guchar *src;
gdouble r, g, b, a;
gdouble c0, c1;
guchar *p0, *p1;
guchar *even, *odd;
gimp_drawable_mask_bounds (drawable->id, &x1, &y1, &x2, &y2);
if (x2 - x1 > PREVIEW_SIZE)
x2 = x1 + PREVIEW_SIZE;
if (y2 - y1 > PREVIEW_SIZE)
y2 = y1 + PREVIEW_SIZE;
width = x2 - x1;
height = y2 - y1;
bpp = gimp_drawable_bpp (drawable->id);
if (width < 1 || height < 1)
return;
gtk_preview_size (GTK_PREVIEW (widget), width, height);
gimp_pixel_rgn_init (&srcPR, drawable, x1, y1, x2, y2, FALSE, FALSE);
even = g_malloc (width * 3);
odd = g_malloc (width * 3);
src = g_malloc (width * bpp);
for (y = 0; y < height; y++)
{
gimp_pixel_rgn_get_row (&srcPR, src, x1, y + y1, width);
p0 = even;
p1 = odd;
for (x = 0; x < width; x++)
{
if (bpp == 4)
{
r = ((gdouble)src[x*4+0]) / 255.0;
g = ((gdouble)src[x*4+1]) / 255.0;
b = ((gdouble)src[x*4+2]) / 255.0;
a = ((gdouble)src[x*4+3]) / 255.0;
}
else if (bpp == 3)
{
r = ((gdouble)src[x*3+0]) / 255.0;
g = ((gdouble)src[x*3+1]) / 255.0;
b = ((gdouble)src[x*3+2]) / 255.0;
a = 1.0;
}
else
{
r = ((gdouble)src[x*bpp+0]) / 255.0;
g = b = r;
if (bpp == 2)
a = ((gdouble)src[x*bpp+1]) / 255.0;
else
a = 1.0;
}
if ((x / GIMP_CHECK_SIZE) & 1)
{
c0 = GIMP_CHECK_LIGHT;
c1 = GIMP_CHECK_DARK;
}
else
{
c0 = GIMP_CHECK_DARK;
c1 = GIMP_CHECK_LIGHT;
}
*p0++ = (c0 + (r - c0) * a) * 255.0;
*p0++ = (c0 + (g - c0) * a) * 255.0;
*p0++ = (c0 + (b - c0) * a) * 255.0;
*p1++ = (c1 + (r - c1) * a) * 255.0;
*p1++ = (c1 + (g - c1) * a) * 255.0;
*p1++ = (c1 + (b - c1) * a) * 255.0;
} /* for */
if ((y / GIMP_CHECK_SIZE) & 1)
gtk_preview_draw_row (GTK_PREVIEW (widget), (guchar *)odd, 0, y, width);
else
gtk_preview_draw_row (GTK_PREVIEW (widget), (guchar *)even, 0, y, width);
}
g_free (even);
g_free (odd);
g_free (src);
}
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