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-rw-r--r--eazel-engine/src/eazel-theme-pixmaps.c630
1 files changed, 0 insertions, 630 deletions
diff --git a/eazel-engine/src/eazel-theme-pixmaps.c b/eazel-engine/src/eazel-theme-pixmaps.c
deleted file mode 100644
index 933b57a..0000000
--- a/eazel-engine/src/eazel-theme-pixmaps.c
+++ /dev/null
@@ -1,630 +0,0 @@
-/* eazel-theme-pixmaps.c -- image manipulation and caching
-
- Copyright (C) 2000 Eazel, Inc.
-
- 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., 675 Mass Ave, Cambridge, MA 02139, USA.
-
- $Id: eazel-theme-pixmaps.c,v 1.5 2001/01/27 01:19:39 jsh Exp $
-
- Authors: John Harper <jsh@eazel.com> */
-
-/* AIX requires this to be the first thing in the file. */
-#ifdef HAVE_CONFIG_H
-#include <config.h>
-#endif
-#ifndef __GNUC__
-# if HAVE_ALLOCA_H
-# include <alloca.h>
-# else
-# ifdef _AIX
- #pragma alloca
-# else
-# ifndef alloca /* predefined by HP cc +Olibcalls */
- char *alloca ();
-# endif
-# endif
-# endif
-#endif
-
-#include "eazel-theme.h"
-#include <gdk-pixbuf/gdk-pixbuf.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-
-
-/* pixmap caching, borrowed from sawfish */
-
-static gulong cached_pixels, max_cached_pixels = 64 * 1024;
-static gulong hits, misses;
-
-typedef struct pixmap_cache_node_struct pixmap_cache_node;
-
-struct pixmap_cache_node_struct {
- pixmap_cache_node *next, *pred;
- pixmap_cache_node *newer, *older;
- eazel_engine_image *im;
- int width, height;
- GdkPixmap *p1;
- GdkBitmap *p2;
- int ref_count;
-};
-
-static pixmap_cache_node *oldest, *newest;
-
-/* list manipulators */
-
-static void
-remove_from_age_list (pixmap_cache_node *n)
-{
- if (n->newer != 0)
- n->newer->older = n->older;
- else
- newest = n->older;
- if (n->older != 0)
- n->older->newer = n->newer;
- else
- oldest = n->newer;
-}
-
-static void
-prepend_to_age_list (pixmap_cache_node *n)
-{
- n->newer = oldest;
- if (n->newer != 0)
- n->newer->older = n;
- oldest = n;
- n->older = 0;
- if (newest == 0)
- newest = n;
-}
-
-static void
-remove_from_image (pixmap_cache_node *n)
-{
- if (n->next != 0)
- n->next->pred = n->pred;
- else
- n->im->pixmap_last = n->pred;
- if (n->pred != 0)
- n->pred->next = n->next;
- else
- n->im->pixmap_first = n->next;
-}
-
-static void
-prepend_to_image (pixmap_cache_node *n)
-{
- eazel_engine_image *im = n->im;
- n->next = im->pixmap_first;
- if (n->next != 0)
- n->next->pred = n;
- im->pixmap_first = n;
- n->pred = 0;
- if (im->pixmap_last == 0)
- im->pixmap_last = n;
-}
-
-static void
-free_node (pixmap_cache_node *n, gboolean dealloc)
-{
- if (n->p1 != 0)
- gdk_pixmap_unref (n->p1);
- if (n->p2 != 0)
- gdk_bitmap_unref (n->p2);
- if (dealloc)
- g_free (n);
-}
-
-static void
-delete_node (pixmap_cache_node *n, gboolean dealloc)
-{
- remove_from_image (n);
- remove_from_age_list (n);
- cached_pixels -= n->width * n->height;
- free_node (n, dealloc);
-}
-
-/* public interface */
-
-static gboolean
-pixmap_cache_ref (eazel_engine_image *im, int width, int height,
- GdkPixmap **p1, GdkBitmap **p2)
-{
- pixmap_cache_node *n;
- for (n = im->pixmap_first; n != 0; n = n->next)
- {
- if (n->width == width && n->height == height)
- {
- remove_from_image (n);
- prepend_to_image (n);
- remove_from_age_list (n);
- prepend_to_age_list (n);
- n->ref_count++;
- *p1 = n->p1;
- *p2 = n->p2;
- hits++;
- return TRUE;
- }
- }
- misses++;
- return FALSE;
-}
-
-static void
-pixmap_cache_unref (eazel_engine_image *im, GdkPixmap *p1, GdkBitmap *p2)
-{
- pixmap_cache_node *n;
- for (n = im->pixmap_first; n != 0; n = n->next)
- {
- if (n->p1 == p1 && n->p2 == p2)
- {
- n->ref_count--;
-#ifdef DISABLE_CACHE
- if (n->ref_count == 0)
- delete_node (n, TRUE);
-#endif
- return;
- }
- }
- fprintf (stderr, "warning: unref'ing unknown image in pixmap-cache\n");
-}
-
-static void
-pixmap_cache_set (eazel_engine_image *im, int width, int height,
- GdkPixmap *p1, GdkBitmap *p2)
-{
- int pixel_count = width * height;
- pixmap_cache_node *n = 0;
-
- while (pixel_count + cached_pixels > max_cached_pixels)
- {
- /* remove oldest node */
- pixmap_cache_node *this = oldest;
- while (this != 0 && this->ref_count > 0)
- this = this->newer;
- if (this == 0)
- break;
- delete_node (this, n != 0);
- if (n == 0)
- n = this;
- }
-
- if (n == 0)
- n = g_new0 (pixmap_cache_node, 1);
-
- n->im = im;
- n->width = width;
- n->height = height;
- n->p1 = p1;
- n->p2 = p2;
- n->ref_count = 1;
-
- prepend_to_image (n);
- prepend_to_age_list (n);
- cached_pixels += pixel_count;
-}
-
-static void
-pixmap_cache_flush_image (eazel_engine_image *im)
-{
- pixmap_cache_node *n, *next;
- for (n = im->pixmap_first; n != 0; n = next)
- {
- next = n->next;
- remove_from_age_list (n);
- free_node (n, TRUE);
- }
- im->pixmap_first = im->pixmap_last = 0;
-}
-
-
-/* image filtering */
-
-typedef struct {
- guchar red, green, blue;
- guchar alpha;
-} pixbuf_pixel;
-
-/* Returns either a new pixbuf, or PIXBUF with its ref-count incremented */
-static GdkPixbuf *
-map_pixbuf (GdkPixbuf *pixbuf, void (*fun)(pixbuf_pixel *, void *), void *data)
-{
- int width, height, row_stride;
- guchar *pixels;
- int x, y;
-
- if (gdk_pixbuf_get_n_channels (pixbuf) == 3)
- pixbuf = gdk_pixbuf_add_alpha (pixbuf, FALSE, 0, 0, 0);
- else
- gdk_pixbuf_ref (pixbuf);
-
- width = gdk_pixbuf_get_width (pixbuf);
- height = gdk_pixbuf_get_height (pixbuf);
- row_stride = gdk_pixbuf_get_rowstride (pixbuf);
- pixels = gdk_pixbuf_get_pixels (pixbuf);
-
- g_assert (gdk_pixbuf_get_n_channels (pixbuf) == 4);
-
- for (y = 0; y < height; y++)
- {
- guchar *row_pixels = pixels + y * row_stride;
-
- for (x = 0; x < width; x++)
- {
- pixbuf_pixel pixel;
-
- pixel.red = row_pixels[0];
- pixel.green = row_pixels[1];
- pixel.blue = row_pixels[2];
- pixel.alpha = row_pixels[3];
-
- fun (&pixel, data);
-
- row_pixels[0] = pixel.red;
- row_pixels[1] = pixel.green;
- row_pixels[2] = pixel.blue;
- row_pixels[3] = pixel.alpha;
-
- row_pixels += 4;
- }
- }
-
- return pixbuf;
-}
-
-struct recolor_closure {
- guchar rgb_buf[256*3];
-};
-
-static void
-recolor_callback (pixbuf_pixel *pixel, void *data)
-{
- struct recolor_closure *rc = data;
- int base;
-
- /* The trick is this:
-
- Recolorable pixels must have zero red and blue channels. The
- green channel gives a notional grey-scale value that is multiplied
- by the values in the closure */
-
- if (pixel->red != 0 || pixel->blue != 0)
- return;
-
- base = pixel->green * 3;
-
- pixel->red = rc->rgb_buf[base+0];
- pixel->green = rc->rgb_buf[base+1];
- pixel->blue = rc->rgb_buf[base+2];
-}
-
-static GdkPixbuf *
-recolor_pixbuf (GdkPixbuf *pixbuf, eazel_engine_gradient *gradient)
-{
- struct recolor_closure rc;
-
- eazel_engine_fill_gradient_rgb_buffer (gradient, 256, rc.rgb_buf, 0, 256);
-
- return map_pixbuf (pixbuf, recolor_callback, &rc);
-}
-
-
-/* image loading */
-
-/* XXX move to gtkrc */
-static char *image_path[] = {
- DATADIR,
- 0
-};
-
-static GdkPixbuf *
-load_image (const char *file)
-{
- char **path = image_path;
- while (*path != 0)
- {
- GdkPixbuf *pixbuf;
- size_t len = strlen (*path) + strlen (file) + 2;
- char *buf = alloca (len);
- sprintf (buf, "%s/%s", *path, file);
- pixbuf = gdk_pixbuf_new_from_file (buf);
- if (pixbuf != 0)
- return pixbuf;
- path++;
- }
- /* XXX error handling here */
- g_error ("No such image: %s", file);
- return 0;
-}
-
-static GdkPixbuf *
-eazel_engine_image_get_pixbuf (eazel_engine_image *p)
-{
- if (p->pixbuf == 0)
- {
- g_assert (p->filename != 0);
- p->pixbuf = load_image (p->filename);
-
- if (p->pixbuf == 0)
- return 0;
-
- if (p->recolor != 0)
- {
- GdkPixbuf *new;
- new = recolor_pixbuf (p->pixbuf, p->recolor);
- if (new != NULL)
- {
- gdk_pixbuf_unref (p->pixbuf);
- p->pixbuf = new;
- }
- }
-
- }
- return p->pixbuf;
-}
-
-
-/* image rendering */
-
-static void
-do_scale (GdkPixbuf *src, int src_x, int src_y, int src_w, int src_h,
- GdkPixbuf *dst, int dst_x, int dst_y, int dst_w, int dst_h)
-{
- double scale_x, scale_y;
- double off_x, off_y;
-
- if (src_w <= 0 || src_h <= 0 || dst_w <= 0 || dst_h <= 0)
- return;
-
- scale_x = dst_w / (double) src_w;
- scale_y = dst_h / (double) src_h;
-
- off_x = dst_x - scale_x * src_x;
- off_y = dst_y - scale_y * src_y;
-
- gdk_pixbuf_scale (src, dst,
- dst_x, dst_y,
- dst_w, dst_h,
- off_x, off_y,
- scale_x, scale_y,
- GDK_INTERP_NEAREST);
-}
-
-static void
-eazel_engine_image_render (eazel_engine_image *image, int width, int height,
- GdkPixmap **pixmap, GdkBitmap **mask)
-{
- GdkPixbuf *im = eazel_engine_image_get_pixbuf (image);
- GdkPixbuf *scaled = im;
- gboolean need_to_unref = FALSE;
- int im_width = gdk_pixbuf_get_width (im);
- int im_height = gdk_pixbuf_get_height (im);
-
- g_assert (im != 0);
- g_return_if_fail (width > 0);
- g_return_if_fail (height > 0);
-
- if (pixmap_cache_ref (image, width, height, pixmap, mask))
- return;
-
- /* XXX handle cases where combined image borders are larger
- XXX than the destination image.. */
-
- if (im_width != width || im_height != height)
- {
- /* need to scale to width by height */
-
- int border[4];
- border[0] = image->border[0];
- border[1] = image->border[1];
- border[2] = image->border[2];
- border[3] = image->border[3];
-
- /* truncate borders if dest image is too small */
- if (border[0] + border[1] > width)
- {
- border[0] = MIN (border[0], width / 2);
- border[1] = MIN (border[1], width / 2);
- }
- if (border[2] + border[3] > height
- || image->border[2] + image->border[3] >= im_height)
- {
- border[2] = MIN (border[2], height / 2);
- border[3] = MIN (border[3], height / 2);
- }
-
- g_assert (border[0] + border[1] <= width);
- g_assert (border[2] + border[3] <= height);
-
- /* create a new buffer */
- scaled = gdk_pixbuf_new (gdk_pixbuf_get_colorspace (im),
- gdk_pixbuf_get_has_alpha (im),
- gdk_pixbuf_get_bits_per_sample (im),
- width, height);
- need_to_unref = TRUE;
-
- /* stretch borders to fit scaled image */
-
- if (border[0] > 0)
- {
- do_scale (im, 0, image->border[2], image->border[0],
- im_height - (image->border[2] + image->border[3]),
- scaled, 0, border[2], border[0],
- height - (border[2] + border[3]));
- }
- if (border[1] > 0)
- {
- do_scale (im, im_width - image->border[1], image->border[2],
- image->border[1],
- im_height - (image->border[2] + image->border[3]),
- scaled, width - border[1], border[2], border[1],
- height - (border[2] + border[3]));
- }
-
- if (border[2] > 0)
- {
- do_scale (im, image->border[0], 0,
- im_width - (image->border[0] + image->border[1]),
- image->border[2],
- scaled, border[0], 0,
- width - (border[0] + border[1]), border[2]);
- }
- if (border[3] > 0)
- {
- do_scale (im, image->border[0], im_height - image->border[3],
- im_width - (image->border[0] + image->border[1]),
- image->border[3],
- scaled, border[0], height - border[3],
- width - (border[0] + border[1]), border[3]);
- }
-
- /* now do corner intersections between borders */
-
- if (border[0] > 0 && border[2] > 0)
- {
- do_scale (im, 0, 0, image->border[0], image->border[2],
- scaled, 0, 0, border[0], border[2]);
- }
- if (border[1] > 0 && border[2] > 0)
- {
- do_scale (im, im_width - image->border[1], 0,
- image->border[1], image->border[2],
- scaled, width - border[1], 0, border[1], border[2]);
- }
- if (border[0] > 0 && border[3] > 0)
- {
- do_scale (im, 0, im_height - image->border[3],
- image->border[0], image->border[3],
- scaled, 0, height - border[3], border[0], border[3]);
- }
- if (border[1] > 0 && border[3] > 0)
- {
- do_scale (im, im_width - image->border[1],
- im_height - image->border[3],
- image->border[1], image->border[3],
- scaled, width - border[1], height - border[3],
- border[1], border[3]);
- }
-
- /* scale the inner parts of the image */
- if (border[0] + border[1] < width
- || border[2] + border[3] < height)
- {
- do_scale (im, image->border[0], image->border[2],
- im_width - (image->border[0] + image->border[1]),
- im_height - (image->border[2] + image->border[3]),
- scaled, border[0], border[2],
- width - (border[0] + border[1]),
- height - (border[2] + border[3]));
- }
- }
-
- gdk_pixbuf_render_pixmap_and_mask (scaled, pixmap, mask, 128);
- if (need_to_unref)
- gdk_pixbuf_unref (scaled);
-
- pixmap_cache_set (image, width, height, *pixmap, *mask);
-}
-
-static void
-eazel_engine_image_free_pixmaps (eazel_engine_image *image,
- GdkPixmap *pixmap, GdkBitmap *mask)
-{
- pixmap_cache_unref (image, pixmap, mask);
-}
-
-
-/* stock images */
-
-void
-eazel_engine_stock_table_unref (eazel_engine_stock_table *table)
-{
- table->ref_count--;
-
- if (table->ref_count == 0)
- {
- int i;
- for (i = 0; i < EAZEL_ENGINE_STOCK_MAX; i++)
- {
- if (table->images[i].pixbuf != 0)
- gdk_pixbuf_unref (table->images[i].pixbuf);
- pixmap_cache_flush_image (&table->images[i]);
- }
- g_free (table);
- }
-}
-
-eazel_engine_stock_table *
-eazel_engine_stock_table_ref (eazel_engine_stock_table *table)
-{
- table->ref_count++;
- return table;
-}
-
-static inline eazel_engine_image *
-get_stock_image (eazel_engine_stock_table *table,
- eazel_engine_stock_image type)
-{
- g_assert (type >= 0 && type < EAZEL_ENGINE_STOCK_MAX);
-
- return &table->images[type];
-}
-
-void
-eazel_engine_stock_pixmap_and_mask_scaled (eazel_engine_stock_table *table,
- eazel_engine_stock_image type,
- int width, int height,
- GdkPixmap **image, GdkBitmap **mask)
-{
- eazel_engine_image *img = get_stock_image (table, type);
- eazel_engine_image_render (img, width, height, image, mask);
-}
-
-void
-eazel_engine_stock_pixmap_and_mask (eazel_engine_stock_table *table,
- eazel_engine_stock_image type,
- GdkPixmap **image, GdkBitmap **mask)
-{
- eazel_engine_image *img = get_stock_image (table, type);
- GdkPixbuf *pixbuf = eazel_engine_image_get_pixbuf (img);
-
- eazel_engine_image_render (img, gdk_pixbuf_get_width (pixbuf),
- gdk_pixbuf_get_height (pixbuf),
- image, mask);
-}
-
-void
-eazel_engine_stock_free_pixmaps (eazel_engine_stock_table *table,
- eazel_engine_stock_image type,
- GdkPixmap *image, GdkPixmap *mask)
-{
- eazel_engine_image *img = get_stock_image (table, type);
- eazel_engine_image_free_pixmaps (img, image, mask);
-}
-
-void
-eazel_engine_stock_get_size (eazel_engine_stock_table *table,
- eazel_engine_stock_image type,
- int *width, int *height)
-{
- eazel_engine_image *img = get_stock_image (table, type);
- GdkPixbuf *pixbuf = eazel_engine_image_get_pixbuf (img);
-
- if (width != 0)
- *width = gdk_pixbuf_get_width (pixbuf);
- if (height != 0)
- *height = gdk_pixbuf_get_height (pixbuf);
-}
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