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gimp/libgimp/gimpmiscui.c

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/* LIBGIMP - The GIMP Library
* Copyright (C) 1995-1997 Peter Mattis and Spencer Kimball
*
* gimpmiscui.c
* Contains all kinds of miscellaneous routines factored out from different
* plug-ins. They stay here until their API has crystalized a bit and we can
* put them into the file where they belong (Maurits Rijk
* <lpeek.mrijk@consunet.nl> if you want to blame someone for this mess)
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#include "config.h"
#include <string.h>
#ifdef __GNUC__
#warning GTK_DISABLE_DEPRECATED
#endif
#undef GTK_DISABLE_DEPRECATED
#include <gtk/gtk.h>
#include "gimp.h"
#include "gimpmiscui.h"
#include "libgimp-intl.h"
#define PREVIEW_SIZE 128
#define PREVIEW_BPP 3
static void
gimp_fixme_preview_put_in_frame (GimpFixMePreview* preview)
{
GtkWidget *frame, *abox;
preview->frame = gtk_frame_new (_("Preview"));
gtk_widget_show (preview->frame);
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 (preview->frame), abox);
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);
gtk_container_add (GTK_CONTAINER (frame), preview->widget);
}
GimpFixMePreview*
gimp_fixme_preview_new (GimpDrawable *drawable,
gboolean has_frame)
{
GimpFixMePreview *preview = g_new0 (GimpFixMePreview, 1);
preview->widget = gtk_preview_new (GTK_PREVIEW_COLOR);
preview->is_gray = FALSE;
if (drawable)
gimp_fixme_preview_fill_with_thumb (preview, drawable->drawable_id);
if (has_frame)
gimp_fixme_preview_put_in_frame (preview);
return preview;
}
void
gimp_fixme_preview_free (GimpFixMePreview *preview)
{
g_free (preview->cmap);
g_free (preview->even);
g_free (preview->odd);
g_free (preview->cache);
g_free (preview);
}
GimpFixMePreview*
gimp_fixme_preview_new2 (GimpImageType drawable_type, gboolean has_frame)
{
GimpFixMePreview *preview = g_new0 (GimpFixMePreview, 1);
guchar *buf = NULL;
gint y;
switch (drawable_type)
{
case GIMP_GRAY_IMAGE:
case GIMP_GRAYA_IMAGE:
preview->widget = gtk_preview_new (GTK_PREVIEW_GRAYSCALE);
buf = g_malloc0 (PREVIEW_SIZE);
preview->is_gray = TRUE;
break;
case GIMP_RGB_IMAGE:
case GIMP_RGBA_IMAGE:
preview->widget = gtk_preview_new (GTK_PREVIEW_COLOR);
buf = g_malloc0 (PREVIEW_SIZE * 3);
preview->is_gray = FALSE;
break;
default:
g_assert_not_reached ();
break;
}
gtk_preview_size (GTK_PREVIEW (preview->widget), PREVIEW_SIZE, PREVIEW_SIZE);
for (y = 0; y < PREVIEW_SIZE; y++)
gtk_preview_draw_row (GTK_PREVIEW (preview->widget), buf, 0, y,
PREVIEW_SIZE);
g_free (buf);
if (has_frame)
gimp_fixme_preview_put_in_frame (preview);
preview->buffer = GTK_PREVIEW (preview->widget)->buffer;
preview->width = GTK_PREVIEW (preview->widget)->buffer_width;
preview->height = GTK_PREVIEW (preview->widget)->buffer_height;
preview->rowstride = preview->width * ((preview->is_gray) ? 1 : 3);
return preview;
}
void
gimp_fixme_preview_put_pixel (GimpFixMePreview *preview,
gint x,
gint y,
const guchar *pixel)
{
guchar *dest;
g_assert (x >= 0 && x < PREVIEW_SIZE);
g_assert (y >= 0 && y < PREVIEW_SIZE);
dest = preview->buffer + y * preview->rowstride;
if (preview->is_gray)
{
dest += x;
dest[0] = pixel[0];
}
else
{
dest += x * 3;
dest[0] = pixel[0];
dest[1] = pixel[1];
dest[2] = pixel[2];
}
}
void
gimp_fixme_preview_get_pixel (GimpFixMePreview *preview,
gint x,
gint y,
guchar *pixel)
{
guchar *src;
g_assert (x >= 0 && x < PREVIEW_SIZE);
g_assert (y >= 0 && y < PREVIEW_SIZE);
src = preview->buffer + y * preview->rowstride;
if (preview->is_gray)
{
src += x;
pixel[0] = src[0];
}
else
{
src += x * 3;
pixel[0] = src[0];
pixel[1] = src[1];
pixel[2] = src[2];
}
}
void
gimp_fixme_preview_do_row (GimpFixMePreview *preview,
gint row,
gint width,
guchar *src)
{
gint x;
guchar *p0 = preview->even;
guchar *p1 = preview->odd;
gint bpp = preview->bpp;
gdouble r, g, b, a;
gdouble c0, c1;
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
{
if (preview->cmap)
{
gint index = MIN (src[x*bpp], preview->ncolors - 1);
r = ((gdouble)preview->cmap[index * 3 + 0]) / 255.0;
g = ((gdouble)preview->cmap[index * 3 + 1]) / 255.0;
b = ((gdouble)preview->cmap[index * 3 + 2]) / 255.0;
}
else
{
r = ((gdouble)src[x*bpp + 0]) / 255.0;
g = b = r;
}
if (bpp == 2)
a = ((gdouble)src[x*2 + 1]) / 255.0;
else
a = 1.0;
}
if ((x / GIMP_CHECK_SIZE_SM) & 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;
}
if ((row / GIMP_CHECK_SIZE_SM) & 1)
{
gtk_preview_draw_row (GTK_PREVIEW (preview->widget),
(guchar *) preview->odd, 0, row, width);
}
else
{
gtk_preview_draw_row (GTK_PREVIEW (preview->widget),
(guchar *) preview->even, 0, row, width);
}
}
void
gimp_fixme_preview_update (GimpFixMePreview *preview,
GimpFixeMePreviewFunc func,
gpointer data)
{
gint x, y;
guchar *buffer;
gint bpp;
bpp = preview->bpp;
buffer = g_new (guchar, preview->rowstride);
for (y = 0; y < preview->height; y++)
{
guchar *src = preview->cache + y * preview->rowstride;
guchar *dest = buffer;
for (x = 0; x < preview->width; x++)
{
func (src, dest, bpp, data);
src += bpp;
dest += bpp;
}
gimp_fixme_preview_do_row (preview, y, preview->width, buffer);
}
gtk_widget_queue_draw (preview->widget);
g_free (buffer);
}
void
gimp_fixme_preview_fill_with_thumb (GimpFixMePreview *preview,
gint32 drawable_ID)
{
gint bpp;
gint y;
gint width = PREVIEW_SIZE;
gint height = PREVIEW_SIZE;
guchar *src;
preview->cache =
gimp_drawable_get_thumbnail_data (drawable_ID, &width, &height, &bpp);
if (width < 1 || height < 1)
return;
preview->rowstride = width * bpp;
preview->bpp = bpp;
if (gimp_drawable_is_indexed (drawable_ID))
{
gint32 image_ID = gimp_drawable_image (drawable_ID);
preview->cmap = gimp_image_get_cmap (image_ID, &preview->ncolors);
}
else
{
preview->cmap = NULL;
}
gtk_preview_size (GTK_PREVIEW (preview->widget), width, height);
preview->scale_x =
(gdouble) width / (gdouble) gimp_drawable_width (drawable_ID);
preview->scale_y =
(gdouble) height / (gdouble) gimp_drawable_height (drawable_ID);
src = preview->cache;
preview->even = g_malloc (width * 3);
preview->odd = g_malloc (width * 3);
for (y = 0; y < height; y++)
{
gimp_fixme_preview_do_row (preview, y, width, src);
src += width * bpp;
}
preview->buffer = GTK_PREVIEW (preview->widget)->buffer;
preview->width = GTK_PREVIEW (preview->widget)->buffer_width;
preview->height = GTK_PREVIEW (preview->widget)->buffer_height;
}
void
gimp_fixme_preview_fill (GimpFixMePreview *preview,
GimpDrawable *drawable)
{
GimpPixelRgn srcPR;
gint width;
gint height;
gint x1, x2, y1, y2;
gint bpp;
gint y;
guchar *src;
gimp_drawable_mask_bounds (drawable->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->drawable_id);
if (gimp_drawable_is_indexed (drawable->drawable_id))
{
gint32 image_ID = gimp_drawable_image (drawable->drawable_id);
preview->cmap = gimp_image_get_cmap (image_ID, &preview->ncolors);
}
else
{
preview->cmap = NULL;
}
gtk_preview_size (GTK_PREVIEW (preview->widget), width, height);
gimp_pixel_rgn_init (&srcPR, drawable, x1, y1, width, height, FALSE, FALSE);
preview->even = g_malloc (width * 3);
preview->odd = g_malloc (width * 3);
src = g_malloc (width * bpp);
preview->cache = g_malloc(width * bpp * height);
preview->rowstride = width * bpp;
preview->bpp = bpp;
for (y = 0; y < height; y++)
{
gimp_pixel_rgn_get_row (&srcPR, src, x1, y + y1, width);
memcpy(preview->cache + (y * width * bpp), src, width * bpp);
}
for (y = 0; y < height; y++)
{
gimp_fixme_preview_do_row(preview, y, width,
preview->cache + (y * width * bpp));
}
preview->buffer = GTK_PREVIEW (preview->widget)->buffer;
preview->width = GTK_PREVIEW (preview->widget)->buffer_width;
preview->height = GTK_PREVIEW (preview->widget)->buffer_height;
g_free (src);
}
void
gimp_fixme_preview_fill_scaled (GimpFixMePreview *preview,
GimpDrawable *drawable)
{
gint bpp;
gint x1, y1, x2, y2;
gint sel_width, sel_height;
gint width, height;
gdouble px, py;
gdouble dx, dy;
gint x, y;
guchar *dest;
GimpPixelFetcher *pft;
gimp_drawable_mask_bounds (drawable->drawable_id, &x1, &y1, &x2, &y2);
sel_width = x2 - x1;
sel_height = y2 - y1;
/* Calculate preview size */
if (sel_width > sel_height)
{
width = MIN (sel_width, PREVIEW_SIZE);
height = sel_height * width / sel_width;
}
else
{
height = MIN(sel_height, PREVIEW_SIZE);
width = sel_width * height / sel_height;
}
if (width < 2) width = 2;
if (height < 2) height = 2;
bpp = gimp_drawable_bpp (drawable->drawable_id);
if (gimp_drawable_is_indexed (drawable->drawable_id))
{
gint32 image_ID = gimp_drawable_image (drawable->drawable_id);
preview->cmap = gimp_image_get_cmap (image_ID, &preview->ncolors);
}
else
{
preview->cmap = NULL;
}
gtk_preview_size (GTK_PREVIEW (preview->widget), width, height);
preview->even = g_malloc (width * 3);
preview->odd = g_malloc (width * 3);
preview->cache = g_malloc (width * bpp * height);
preview->rowstride = width * bpp;
preview->bpp = bpp;
dx = (gdouble) (x2 - x1 - 1) / (width - 1);
dy = (gdouble) (y2 - y1 - 1) / (height - 1);
py = y1;
pft = gimp_pixel_fetcher_new (drawable);
for (y = 0; y < height; y++)
{
dest = preview->cache + y * preview->rowstride;
px = x1;
for (x = 0; x < width; x++)
{
gimp_pixel_fetcher_get_pixel (pft, (gint) px, (gint) py, dest);
dest += bpp;
px += dx;
}
gimp_fixme_preview_do_row (preview, y, width, dest);
py += dy;
}
gimp_pixel_fetcher_destroy (pft);
preview->buffer = GTK_PREVIEW (preview->widget)->buffer;
preview->width = GTK_PREVIEW (preview->widget)->buffer_width;
preview->height = GTK_PREVIEW (preview->widget)->buffer_height;
}
GList*
gimp_plug_in_parse_path (gchar *path_name,
const gchar *dir_name)
{
GList *path_list = NULL;
gchar *path;
path = gimp_gimprc_query (path_name);
if (!path)
{
gchar *gimprc = gimp_personal_rc_file ("gimprc");
gchar *full_path;
gchar *esc_path;
full_path = g_strconcat
("${gimp_dir}", G_DIR_SEPARATOR_S, dir_name,
G_SEARCHPATH_SEPARATOR_S,
"${gimp_data_dir}", G_DIR_SEPARATOR_S, dir_name,
NULL);
esc_path = g_strescape (full_path, NULL);
g_message (_("No %s in gimprc:\n"
"You need to add an entry like\n"
"(%s \"%s\")\n"
"to your %s file."), path_name, path_name, esc_path,
gimprc);
g_free (gimprc);
g_free (full_path);
g_free (esc_path);
return NULL;
}
path_list = gimp_path_parse (path, 16, TRUE, NULL);
g_free (path);
return path_list;
}
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