gtk/gdk/gdkpixmap.c
Owen Taylor a0ca2a7b0d New function gdk_pixmap_foreign_new(). (gtk-blizzard-981005-0. Christopher
Fri Nov 13 11:22:38 1998  Owen Taylor  <otaylor@redhat.com>

	* gdk/gdkpixmap.c: New function gdk_pixmap_foreign_new().
	(gtk-blizzard-981005-0.
	 Christopher Blizzard <blizzard@applied-theory.com)

	* gdk/gdk.h gdk/gdkx.h: Moved gdk_window_foreign_new and
	gdk_pixmap_foreign_new to gdkx.h.

Fri Nov 13 16:06:48 1998  Owen Taylor  <otaylor@redhat.com>

	* gtk/Makefile.am: Added rules to generate an empty
	GTK+ theme called "Default" upon installation.

	* gtk/gtkrc.c (gtk_rc_parse_style): Fix inheritance
	of fonts and fontsets.
	(gtk-matsu-980924. Takashi Matsuda matsu@arch.comp.kyutech.ac.jp)

	* gtk/gtkmain.c: Change test to detect glibc's
	utf8 based mb* functions to be more specific.

	* gtk/gtkwindow.[ch] gtk/gtkfixed.c: Indentation
	cleanups.
1998-11-13 21:28:36 +00:00

835 lines
19 KiB
C

/* GDK - The GIMP Drawing Kit
* Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library 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 Library 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 <stdlib.h>
#include <stdio.h>
#include <string.h>
/* Needed for SEEK_END in SunOS */
#include <unistd.h>
#include <X11/Xlib.h>
#include "gdk.h"
#include "gdkprivate.h"
typedef struct
{
gchar *color_string;
GdkColor color;
gint transparent;
} _GdkPixmapColor;
typedef struct
{
guint ncolors;
GdkColormap *colormap;
gulong pixels[1];
} _GdkPixmapInfo;
GdkPixmap*
gdk_pixmap_new (GdkWindow *window,
gint width,
gint height,
gint depth)
{
GdkPixmap *pixmap;
GdkWindowPrivate *private;
GdkWindowPrivate *window_private;
g_return_val_if_fail ((window != NULL) || (depth != -1), NULL);
g_return_val_if_fail ((width != 0) && (height != 0), NULL);
if (!window)
window = (GdkWindow*) &gdk_root_parent;
window_private = (GdkWindowPrivate*) window;
if (window_private->destroyed)
return NULL;
if (depth == -1)
depth = gdk_window_get_visual (window)->depth;
private = g_new (GdkWindowPrivate, 1);
pixmap = (GdkPixmap*) private;
private->xdisplay = window_private->xdisplay;
private->window_type = GDK_WINDOW_PIXMAP;
private->xwindow = XCreatePixmap (private->xdisplay, window_private->xwindow,
width, height, depth);
private->colormap = NULL;
private->parent = NULL;
private->x = 0;
private->y = 0;
private->width = width;
private->height = height;
private->resize_count = 0;
private->ref_count = 1;
private->destroyed = 0;
gdk_xid_table_insert (&private->xwindow, pixmap);
return pixmap;
}
GdkPixmap *
gdk_bitmap_create_from_data (GdkWindow *window,
gchar *data,
gint width,
gint height)
{
GdkPixmap *pixmap;
GdkWindowPrivate *private;
GdkWindowPrivate *window_private;
g_return_val_if_fail (data != NULL, NULL);
g_return_val_if_fail ((width != 0) && (height != 0), NULL);
if (!window)
window = (GdkWindow*) &gdk_root_parent;
window_private = (GdkWindowPrivate*) window;
if (window_private->destroyed)
return NULL;
private = g_new (GdkWindowPrivate, 1);
pixmap = (GdkPixmap*) private;
private->parent = NULL;
private->xdisplay = window_private->xdisplay;
private->window_type = GDK_WINDOW_PIXMAP;
private->x = 0;
private->y = 0;
private->width = width;
private->height = height;
private->resize_count = 0;
private->ref_count = 1;
private->destroyed = FALSE;
private->xwindow = XCreateBitmapFromData (private->xdisplay,
window_private->xwindow,
data, width, height);
gdk_xid_table_insert (&private->xwindow, pixmap);
return pixmap;
}
GdkPixmap*
gdk_pixmap_create_from_data (GdkWindow *window,
gchar *data,
gint width,
gint height,
gint depth,
GdkColor *fg,
GdkColor *bg)
{
GdkPixmap *pixmap;
GdkWindowPrivate *private;
GdkWindowPrivate *window_private;
g_return_val_if_fail (data != NULL, NULL);
g_return_val_if_fail (fg != NULL, NULL);
g_return_val_if_fail (bg != NULL, NULL);
g_return_val_if_fail ((window != NULL) || (depth != -1), NULL);
g_return_val_if_fail ((width != 0) && (height != 0), NULL);
if (!window)
window = (GdkWindow*) &gdk_root_parent;
window_private = (GdkWindowPrivate*) window;
if (window_private->destroyed)
return NULL;
if (depth == -1)
depth = gdk_window_get_visual (window)->depth;
private = g_new (GdkWindowPrivate, 1);
pixmap = (GdkPixmap*) private;
private->parent = NULL;
private->xdisplay = window_private->xdisplay;
private->window_type = GDK_WINDOW_PIXMAP;
private->x = 0;
private->y = 0;
private->width = width;
private->height = height;
private->resize_count = 0;
private->ref_count = 1;
private->destroyed = FALSE;
private->xwindow = XCreatePixmapFromBitmapData (private->xdisplay,
window_private->xwindow,
data, width, height,
fg->pixel, bg->pixel, depth);
gdk_xid_table_insert (&private->xwindow, pixmap);
return pixmap;
}
static gint
gdk_pixmap_seek_string (FILE *infile,
const gchar *str,
gint skip_comments)
{
char instr[1024];
while (!feof (infile))
{
fscanf (infile, "%1023s", instr);
if (skip_comments == TRUE && strcmp (instr, "/*") == 0)
{
fscanf (infile, "%1023s", instr);
while (!feof (infile) && strcmp (instr, "*/") != 0)
fscanf (infile, "%1023s", instr);
fscanf(infile, "%1023s", instr);
}
if (strcmp (instr, str)==0)
return TRUE;
}
return FALSE;
}
static gint
gdk_pixmap_seek_char (FILE *infile,
gchar c)
{
gint b, oldb;
while ((b = getc(infile)) != EOF)
{
if (c != b && b == '/')
{
b = getc (infile);
if (b == EOF)
return FALSE;
else if (b == '*') /* we have a comment */
{
b = -1;
do
{
oldb = b;
b = getc (infile);
if (b == EOF)
return FALSE;
}
while (!(oldb == '*' && b == '/'));
}
}
else if (c == b)
return TRUE;
}
return FALSE;
}
static gint
gdk_pixmap_read_string (FILE *infile,
gchar **buffer,
guint *buffer_size)
{
gint c;
guint cnt = 0, bufsiz, ret = FALSE;
gchar *buf;
buf = *buffer;
bufsiz = *buffer_size;
if (buf == NULL)
{
bufsiz = 10 * sizeof (gchar);
buf = g_new(gchar, bufsiz);
}
do
c = getc (infile);
while (c != EOF && c != '"');
if (c != '"')
goto out;
while ((c = getc(infile)) != EOF)
{
if (cnt == bufsiz)
{
guint new_size = bufsiz * 2;
if (new_size > bufsiz)
bufsiz = new_size;
else
goto out;
buf = (gchar *) g_realloc (buf, bufsiz);
buf[bufsiz-1] = '\0';
}
if (c != '"')
buf[cnt++] = c;
else
{
buf[cnt] = 0;
ret = TRUE;
break;
}
}
out:
buf[bufsiz-1] = '\0'; /* ensure null termination for errors */
*buffer = buf;
*buffer_size = bufsiz;
return ret;
}
static gchar*
gdk_pixmap_skip_whitespaces (gchar *buffer)
{
gint32 index = 0;
while (buffer[index] != 0 && (buffer[index] == 0x20 || buffer[index] == 0x09))
index++;
return &buffer[index];
}
static gchar*
gdk_pixmap_skip_string (gchar *buffer)
{
gint32 index = 0;
while (buffer[index] != 0 && buffer[index] != 0x20 && buffer[index] != 0x09)
index++;
return &buffer[index];
}
/* Xlib crashed ince at a color name lengths around 125 */
#define MAX_COLOR_LEN 120
static gchar*
gdk_pixmap_extract_color (gchar *buffer)
{
gint counter, numnames;
gchar *ptr = NULL, ch, temp[128];
gchar color[MAX_COLOR_LEN], *retcol;
gint space;
counter = 0;
while (ptr == NULL)
{
if (buffer[counter] == 'c')
{
ch = buffer[counter + 1];
if (ch == 0x20 || ch == 0x09)
ptr = &buffer[counter + 1];
}
else if (buffer[counter] == 0)
return NULL;
counter++;
}
ptr = gdk_pixmap_skip_whitespaces (ptr);
if (ptr[0] == 0)
return NULL;
else if (ptr[0] == '#')
{
counter = 1;
while (ptr[counter] != 0 &&
((ptr[counter] >= '0' && ptr[counter] <= '9') ||
(ptr[counter] >= 'a' && ptr[counter] <= 'f') ||
(ptr[counter] >= 'A' && ptr[counter] <= 'F')))
counter++;
retcol = g_new (gchar, counter+1);
strncpy (retcol, ptr, counter);
retcol[counter] = 0;
return retcol;
}
color[0] = 0;
numnames = 0;
space = MAX_COLOR_LEN - 1;
while (space > 0)
{
sscanf (ptr, "%127s", temp);
if (((gint)ptr[0] == 0) ||
(strcmp ("s", temp) == 0) || (strcmp ("m", temp) == 0) ||
(strcmp ("g", temp) == 0) || (strcmp ("g4", temp) == 0))
{
break;
}
else
{
if (numnames > 0)
{
space -= 1;
strcat (color, " ");
}
strncat (color, temp, space);
space -= MIN (space, strlen (temp));
ptr = gdk_pixmap_skip_string (ptr);
ptr = gdk_pixmap_skip_whitespaces (ptr);
numnames++;
}
}
retcol = g_strdup (color);
return retcol;
}
enum buffer_op
{
op_header,
op_cmap,
op_body
};
static void
gdk_xpm_destroy_notify (gpointer data)
{
_GdkPixmapInfo *info = (_GdkPixmapInfo *)data;
GdkColor color;
int i;
for (i=0; i<info->ncolors; i++)
{
color.pixel = info->pixels[i];
gdk_colormap_free_colors (info->colormap, &color, 1);
}
gdk_colormap_unref (info->colormap);
g_free (info);
}
static GdkPixmap *
_gdk_pixmap_create_from_xpm (GdkWindow *window,
GdkColormap *colormap,
GdkBitmap **mask,
GdkColor *transparent_color,
gchar * (*get_buf) (enum buffer_op op,
gpointer handle),
gpointer handle)
{
GdkPixmap *pixmap = NULL;
GdkImage *image = NULL;
GdkVisual *visual;
GdkGC *gc = NULL;
GdkColor tmp_color;
gint width, height, num_cols, cpp, n, ns, cnt, xcnt, ycnt, wbytes;
gchar *buffer, pixel_str[32];
gchar *name_buf;
_GdkPixmapColor *color = NULL, *fallbackcolor = NULL;
_GdkPixmapColor *colors = NULL;
gulong index;
GHashTable *color_hash = NULL;
_GdkPixmapInfo *color_info = NULL;
if ((window == NULL) && (colormap == NULL))
g_warning ("Creating pixmap from xpm with NULL window and colormap");
if (window == NULL)
window = (GdkWindow *)&gdk_root_parent;
if (colormap == NULL)
{
colormap = gdk_window_get_colormap (window);
visual = gdk_window_get_visual (window);
}
else
visual = ((GdkColormapPrivate *)colormap)->visual;
buffer = (*get_buf) (op_header, handle);
if (buffer == NULL)
return NULL;
sscanf (buffer,"%d %d %d %d", &width, &height, &num_cols, &cpp);
if (cpp >= 32)
{
g_warning ("Pixmap has more than 31 characters per color\n");
return NULL;
}
color_hash = g_hash_table_new (g_str_hash, g_str_equal);
if (transparent_color == NULL)
{
gdk_color_white (colormap, &tmp_color);
transparent_color = &tmp_color;
}
/* For pseudo-color and grayscale visuals, we have to remember
* the colors we allocated, so we can free them later.
*/
if ((visual->type == GDK_VISUAL_PSEUDO_COLOR) ||
(visual->type == GDK_VISUAL_GRAYSCALE))
{
color_info = g_malloc (sizeof (_GdkPixmapInfo) +
sizeof(gulong) * (num_cols - 1));
color_info->ncolors = num_cols;
color_info->colormap = colormap;
gdk_colormap_ref (colormap);
}
name_buf = g_new (gchar, num_cols * (cpp+1));
colors = g_new (_GdkPixmapColor, num_cols);
for (cnt = 0; cnt < num_cols; cnt++)
{
gchar *color_name;
buffer = (*get_buf) (op_cmap, handle);
if (buffer == NULL)
goto error;
color = &colors[cnt];
color->color_string = &name_buf [cnt * (cpp + 1)];
strncpy (color->color_string, buffer, cpp);
color->color_string[cpp] = 0;
buffer += strlen (color->color_string);
color->transparent = FALSE;
color_name = gdk_pixmap_extract_color (buffer);
if (color_name == NULL ||
gdk_color_parse (color_name, &color->color) == FALSE)
{
color->color = *transparent_color;
color->transparent = TRUE;
}
g_free (color_name);
/* FIXME: The remaining slowness appears to happen in this
function. */
gdk_color_alloc (colormap, &color->color);
if (color_info)
color_info->pixels[cnt] = color->color.pixel;
g_hash_table_insert (color_hash, color->color_string, color);
if (cnt == 0)
fallbackcolor = color;
}
index = 0;
image = gdk_image_new (GDK_IMAGE_FASTEST, visual, width, height);
if (mask)
{
/* The pixmap mask is just a bits pattern.
* Color 0 is used for background and 1 for foreground.
* We don't care about the colormap, we just need 0 and 1.
*/
GdkColor mask_pattern;
*mask = gdk_pixmap_new (window, width, height, 1);
gc = gdk_gc_new (*mask);
mask_pattern.pixel = 0;
gdk_gc_set_foreground (gc, &mask_pattern);
gdk_draw_rectangle (*mask, gc, TRUE, 0, 0, -1, -1);
mask_pattern.pixel = 1;
gdk_gc_set_foreground (gc, &mask_pattern);
}
wbytes = width * cpp;
for (ycnt = 0; ycnt < height; ycnt++)
{
buffer = (*get_buf) (op_body, handle);
/* FIXME: this slows things down a little - it could be
* integrated into the strncpy below, perhaps. OTOH, strlen
* is fast.
*/
if ((buffer == NULL) || strlen (buffer) < wbytes)
continue;
for (n = 0, cnt = 0, xcnt = 0; n < wbytes; n += cpp, xcnt++)
{
strncpy (pixel_str, &buffer[n], cpp);
pixel_str[cpp] = 0;
ns = 0;
color = g_hash_table_lookup (color_hash, pixel_str);
if (!color) /* screwed up XPM file */
color = fallbackcolor;
gdk_image_put_pixel (image, xcnt, ycnt, color->color.pixel);
if (mask && color->transparent)
{
if (cnt < xcnt)
gdk_draw_line (*mask, gc, cnt, ycnt, xcnt - 1, ycnt);
cnt = xcnt + 1;
}
}
if (mask && (cnt < xcnt))
gdk_draw_line (*mask, gc, cnt, ycnt, xcnt - 1, ycnt);
}
error:
if (mask)
gdk_gc_destroy (gc);
if (image != NULL)
{
pixmap = gdk_pixmap_new (window, width, height, visual->depth);
if (color_info)
gdk_drawable_set_data (pixmap, "gdk-xpm", color_info,
gdk_xpm_destroy_notify);
gc = gdk_gc_new (pixmap);
gdk_gc_set_foreground (gc, transparent_color);
gdk_draw_image (pixmap, gc, image, 0, 0, 0, 0, image->width, image->height);
gdk_gc_destroy (gc);
gdk_image_destroy (image);
}
else if (color_info)
gdk_xpm_destroy_notify (color_info);
if (color_hash != NULL)
g_hash_table_destroy (color_hash);
if (colors != NULL)
g_free (colors);
if (name_buf != NULL)
g_free (name_buf);
return pixmap;
}
struct file_handle
{
FILE *infile;
gchar *buffer;
guint buffer_size;
};
static gchar *
file_buffer (enum buffer_op op, gpointer handle)
{
struct file_handle *h = handle;
switch (op)
{
case op_header:
if (gdk_pixmap_seek_string (h->infile, "XPM", FALSE) != TRUE)
break;
if (gdk_pixmap_seek_char (h->infile,'{') != TRUE)
break;
/* Fall through to the next gdk_pixmap_seek_char. */
case op_cmap:
gdk_pixmap_seek_char (h->infile, '"');
fseek (h->infile, -1, SEEK_CUR);
/* Fall through to the gdk_pixmap_read_string. */
case op_body:
gdk_pixmap_read_string (h->infile, &h->buffer, &h->buffer_size);
return h->buffer;
}
return 0;
}
GdkPixmap*
gdk_pixmap_colormap_create_from_xpm (GdkWindow *window,
GdkColormap *colormap,
GdkBitmap **mask,
GdkColor *transparent_color,
const gchar *filename)
{
struct file_handle h;
GdkPixmap *pixmap = NULL;
memset (&h, 0, sizeof (h));
h.infile = fopen (filename, "rb");
if (h.infile != NULL)
{
pixmap = _gdk_pixmap_create_from_xpm (window, colormap, mask,
transparent_color,
file_buffer, &h);
fclose (h.infile);
g_free (h.buffer);
}
return pixmap;
}
GdkPixmap*
gdk_pixmap_create_from_xpm (GdkWindow *window,
GdkBitmap **mask,
GdkColor *transparent_color,
const gchar *filename)
{
return gdk_pixmap_colormap_create_from_xpm (window, NULL, mask,
transparent_color, filename);
}
struct mem_handle
{
gchar **data;
int offset;
};
static gchar *
mem_buffer (enum buffer_op op, gpointer handle)
{
struct mem_handle *h = handle;
switch (op)
{
case op_header:
case op_cmap:
case op_body:
if (h->data[h->offset])
return h->data[h->offset ++];
}
return 0;
}
GdkPixmap*
gdk_pixmap_colormap_create_from_xpm_d (GdkWindow *window,
GdkColormap *colormap,
GdkBitmap **mask,
GdkColor *transparent_color,
gchar **data)
{
struct mem_handle h;
GdkPixmap *pixmap = NULL;
memset (&h, 0, sizeof (h));
h.data = data;
pixmap = _gdk_pixmap_create_from_xpm (window, colormap, mask,
transparent_color,
mem_buffer, &h);
return pixmap;
}
GdkPixmap*
gdk_pixmap_create_from_xpm_d (GdkWindow *window,
GdkBitmap **mask,
GdkColor *transparent_color,
gchar **data)
{
return gdk_pixmap_colormap_create_from_xpm_d (window, NULL, mask,
transparent_color, data);
}
GdkPixmap*
gdk_pixmap_foreign_new (guint32 anid)
{
GdkPixmap *pixmap;
GdkWindowPrivate *window_private;
GdkWindowPrivate *private;
Pixmap xpixmap;
Window root_return;
unsigned int x_ret, y_ret, w_ret, h_ret, bw_ret, depth_ret;
/* check to make sure we were passed something at
least a little sane */
g_return_val_if_fail((anid != 0), NULL);
/* set the pixmap to the passed in value */
xpixmap = anid;
/* get the root window */
window_private = &gdk_root_parent;
/* get information about the Pixmap to fill in the structure for
the gdk window */
if (!XGetGeometry(window_private->xdisplay, xpixmap, &root_return,
&x_ret, &y_ret, &w_ret, &h_ret, &bw_ret, &depth_ret))
return NULL;
/* allocate a new gdk pixmap */
private = g_new(GdkWindowPrivate, 1);
pixmap = (GdkPixmap *)private;
private->xdisplay = window_private->xdisplay;
private->window_type = GDK_WINDOW_PIXMAP;
private->xwindow = xpixmap;
private->colormap = NULL;
private->parent = NULL;
private->x = 0;
private->y = 0;
private->width = w_ret;
private->height = h_ret;
private->resize_count = 0;
private->ref_count = 1;
private->destroyed = 0;
gdk_xid_table_insert(&private->xwindow, pixmap);
return pixmap;
}
GdkPixmap*
gdk_pixmap_ref (GdkPixmap *pixmap)
{
GdkWindowPrivate *private = (GdkWindowPrivate *)pixmap;
g_return_val_if_fail (pixmap != NULL, NULL);
private->ref_count += 1;
return pixmap;
}
void
gdk_pixmap_unref (GdkPixmap *pixmap)
{
GdkWindowPrivate *private = (GdkWindowPrivate *)pixmap;
g_return_if_fail(pixmap != NULL);
private->ref_count -= 1;
if (private->ref_count == 0)
{
XFreePixmap (private->xdisplay, private->xwindow);
gdk_xid_table_remove (private->xwindow);
g_dataset_destroy (private);
g_free (private);
}
}
GdkBitmap *
gdk_bitmap_ref (GdkBitmap *bitmap)
{
return (GdkBitmap *)gdk_pixmap_ref ((GdkPixmap *)bitmap);
}
void
gdk_bitmap_unref (GdkBitmap *bitmap)
{
gdk_pixmap_unref ((GdkPixmap *)bitmap);
}