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gtk/gdk/win32/gdkpixmap.c
Tor Lillqvist d142187b38 Fixes to the win32 backend to actually be able to compile within a 
directory hierarchy like this, with common gdk.h and gdktypes.h
for all backends. gdkrectangles.c and gdkrgb.c is copied before
compilation from the x11 backed (which still is in .., but
eventually will be in ..\x11).
1999-03-17 20:12:47 +00:00

1060 lines
25 KiB
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/* GDK - The GIMP Drawing Kit
* Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
* Copyright (C) 1998-1999 Tor Lillqvist
*
* 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.
*/
/*
* Modified by the GTK+ Team and others 1997-1999. See the AUTHORS
* file for a list of people on the GTK+ Team. See the ChangeLog
* files for a list of changes. These files are distributed with
* GTK+ at ftp://ftp.gtk.org/pub/gtk/.
*/
#include "config.h"
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <gdk/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;
struct {
BITMAPINFOHEADER bmiHeader;
union {
WORD bmiIndices[256];
DWORD bmiMasks[3];
RGBQUAD bmiColors[256];
} u;
} bmi;
UINT iUsage;
HDC hdc;
GdkVisual *visual;
guchar *bits;
gint i;
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;
GDK_NOTE (MISC, g_print ("gdk_pixmap_new: %dx%dx%d\n", width, height, depth));
private = g_new0 (GdkWindowPrivate, 1);
pixmap = (GdkPixmap*) private;
private->window_type = GDK_WINDOW_PIXMAP;
visual = gdk_window_get_visual (window);
#if 0
if (depth == 1)
{
if ((private->xwindow =
CreateBitmap (width, height, 1, 1, NULL)) == NULL)
{
g_warning ("gdk_pixmap_new: CreateBitmap failed");
g_free (private);
return NULL;
}
private->colormap = NULL;
}
else
{
if (depth != visual->depth)
g_warning ("gdk_pixmap_new: depth %d doesn't match display depth %d",
depth, visual->depth);
if ((hdc = GetDC (window_private->xwindow)) == NULL)
{
g_warning ("gdk_pixmap_new: GetDC failed");
g_free (private);
return NULL;
}
if ((private->xwindow =
CreateCompatibleBitmap (hdc, width, height)) == NULL)
{
g_warning ("gdk_pixmap_new: %dx%d CreateCompatibleBitmap failed",
width, height);
ReleaseDC (window_private->xwindow, hdc);
g_free (private);
return NULL;
}
ReleaseDC (window_private->xwindow, hdc);
private->colormap = window_private->colormap;
if (private->colormap == NULL)
private->colormap = gdk_colormap_get_system ();
}
#else
if ((hdc = GetDC (window_private->xwindow)) == NULL)
{
g_warning ("gdk_pixmap_new: GetDC failed");
g_free (private);
return NULL;
}
bmi.bmiHeader.biSize = sizeof (BITMAPINFOHEADER);
bmi.bmiHeader.biWidth = width;
bmi.bmiHeader.biHeight = -height;
bmi.bmiHeader.biPlanes = 1;
if (depth == 15)
bmi.bmiHeader.biBitCount = 16;
else
bmi.bmiHeader.biBitCount = depth;
#if 1
if (depth == 16)
bmi.bmiHeader.biCompression = BI_BITFIELDS;
else
#endif
bmi.bmiHeader.biCompression = BI_RGB;
bmi.bmiHeader.biSizeImage = 0;
bmi.bmiHeader.biXPelsPerMeter =
bmi.bmiHeader.biYPelsPerMeter = 0;
bmi.bmiHeader.biClrUsed = 0;
bmi.bmiHeader.biClrImportant = 0;
iUsage = DIB_RGB_COLORS;
if (depth == 1)
{
bmi.u.bmiColors[0].rgbBlue =
bmi.u.bmiColors[0].rgbGreen =
bmi.u.bmiColors[0].rgbRed = 0x00;
bmi.u.bmiColors[0].rgbReserved = 0x00;
bmi.u.bmiColors[1].rgbBlue =
bmi.u.bmiColors[1].rgbGreen =
bmi.u.bmiColors[1].rgbRed = 0xFF;
bmi.u.bmiColors[1].rgbReserved = 0x00;
private->colormap = NULL;
}
else
{
private->colormap = window_private->colormap;
if (private->colormap == NULL)
private->colormap = gdk_colormap_get_system ();
if (depth == 8)
{
iUsage = DIB_PAL_COLORS;
for (i = 0; i < 256; i++)
bmi.u.bmiIndices[i] = i;
}
else
{
if (depth != visual->depth)
g_warning ("gdk_pixmap_new: depth %d doesn't match display depth %d",
depth, visual->depth);
#if 1
if (depth == 16)
{
bmi.u.bmiMasks[0] = visual->red_mask;
bmi.u.bmiMasks[1] = visual->green_mask;
bmi.u.bmiMasks[2] = visual->blue_mask;
}
#endif
}
}
if ((private->xwindow =
CreateDIBSection (hdc, (BITMAPINFO *) &bmi,
iUsage, &bits, NULL, 0)) == NULL)
{
g_warning ("gdk_pixmap_new: CreateDIBSection failed: %d", GetLastError ());
ReleaseDC (window_private->xwindow, hdc);
g_free (private);
return NULL;
}
ReleaseDC (window_private->xwindow, hdc);
#endif
GDK_NOTE (MISC, g_print ("... = %#x\n", private->xwindow));
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_pixmap_create_on_shared_image (GdkImage **image_return,
GdkWindow *window,
GdkVisual *visual,
gint width,
gint height,
gint depth)
{
GdkPixmap *pixmap;
GdkImagePrivate *image_private;
GdkWindowPrivate *private;
GdkWindowPrivate *window_private;
g_return_val_if_fail (window != NULL, NULL);
window_private = (GdkWindowPrivate *) window;
if (depth == 1)
*image_return = gdk_image_bitmap_new (GDK_IMAGE_SHARED_PIXMAP, visual, width, height);
else
{
g_return_val_if_fail (depth == visual->depth, NULL);
*image_return = gdk_image_new (GDK_IMAGE_SHARED_PIXMAP, visual, width, height);
}
g_return_val_if_fail (*image_return != NULL, NULL);
image_private = (GdkImagePrivate *) *image_return;
private = g_new0 (GdkWindowPrivate, 1);
pixmap = (GdkPixmap*) private;
private->xwindow = image_private->ximage;
private->window_type = GDK_WINDOW_PIXMAP;
private->colormap = window_private->colormap;
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);
GDK_NOTE (MISC,
g_print ("gdk_pixmap_create_on_shared_image: %dx%dx%d = %#x\n",
width, height, depth, private->xwindow));
return pixmap;
}
static unsigned char mirror[256] = {
0x00, 0x80, 0x40, 0xc0, 0x20, 0xa0, 0x60, 0xe0,
0x10, 0x90, 0x50, 0xd0, 0x30, 0xb0, 0x70, 0xf0,
0x08, 0x88, 0x48, 0xc8, 0x28, 0xa8, 0x68, 0xe8,
0x18, 0x98, 0x58, 0xd8, 0x38, 0xb8, 0x78, 0xf8,
0x04, 0x84, 0x44, 0xc4, 0x24, 0xa4, 0x64, 0xe4,
0x14, 0x94, 0x54, 0xd4, 0x34, 0xb4, 0x74, 0xf4,
0x0c, 0x8c, 0x4c, 0xcc, 0x2c, 0xac, 0x6c, 0xec,
0x1c, 0x9c, 0x5c, 0xdc, 0x3c, 0xbc, 0x7c, 0xfc,
0x02, 0x82, 0x42, 0xc2, 0x22, 0xa2, 0x62, 0xe2,
0x12, 0x92, 0x52, 0xd2, 0x32, 0xb2, 0x72, 0xf2,
0x0a, 0x8a, 0x4a, 0xca, 0x2a, 0xaa, 0x6a, 0xea,
0x1a, 0x9a, 0x5a, 0xda, 0x3a, 0xba, 0x7a, 0xfa,
0x06, 0x86, 0x46, 0xc6, 0x26, 0xa6, 0x66, 0xe6,
0x16, 0x96, 0x56, 0xd6, 0x36, 0xb6, 0x76, 0xf6,
0x0e, 0x8e, 0x4e, 0xce, 0x2e, 0xae, 0x6e, 0xee,
0x1e, 0x9e, 0x5e, 0xde, 0x3e, 0xbe, 0x7e, 0xfe,
0x01, 0x81, 0x41, 0xc1, 0x21, 0xa1, 0x61, 0xe1,
0x11, 0x91, 0x51, 0xd1, 0x31, 0xb1, 0x71, 0xf1,
0x09, 0x89, 0x49, 0xc9, 0x29, 0xa9, 0x69, 0xe9,
0x19, 0x99, 0x59, 0xd9, 0x39, 0xb9, 0x79, 0xf9,
0x05, 0x85, 0x45, 0xc5, 0x25, 0xa5, 0x65, 0xe5,
0x15, 0x95, 0x55, 0xd5, 0x35, 0xb5, 0x75, 0xf5,
0x0d, 0x8d, 0x4d, 0xcd, 0x2d, 0xad, 0x6d, 0xed,
0x1d, 0x9d, 0x5d, 0xdd, 0x3d, 0xbd, 0x7d, 0xfd,
0x03, 0x83, 0x43, 0xc3, 0x23, 0xa3, 0x63, 0xe3,
0x13, 0x93, 0x53, 0xd3, 0x33, 0xb3, 0x73, 0xf3,
0x0b, 0x8b, 0x4b, 0xcb, 0x2b, 0xab, 0x6b, 0xeb,
0x1b, 0x9b, 0x5b, 0xdb, 0x3b, 0xbb, 0x7b, 0xfb,
0x07, 0x87, 0x47, 0xc7, 0x27, 0xa7, 0x67, 0xe7,
0x17, 0x97, 0x57, 0xd7, 0x37, 0xb7, 0x77, 0xf7,
0x0f, 0x8f, 0x4f, 0xcf, 0x2f, 0xaf, 0x6f, 0xef,
0x1f, 0x9f, 0x5f, 0xdf, 0x3f, 0xbf, 0x7f, 0xff
};
GdkPixmap *
gdk_bitmap_create_from_data (GdkWindow *window,
const gchar *data,
gint width,
gint height)
{
GdkPixmap *pixmap;
GdkWindowPrivate *private;
GdkWindowPrivate *window_private;
gint i, j, bpl, aligned_bpl;
guchar *bits;
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_new0 (GdkWindowPrivate, 1);
pixmap = (GdkPixmap*) private;
private->parent = NULL;
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;
bpl = ((width - 1) / 8 + 1);
aligned_bpl = ((bpl - 1) / 2 + 1) * 2;
bits = g_malloc (aligned_bpl * height);
for (i = 0; i < height; i++)
for (j = 0; j < bpl; j++)
bits[i*aligned_bpl + j] = mirror[(guchar) data[i*bpl + j]];
private->xwindow = CreateBitmap (width, height, 1, 1, bits);
GDK_NOTE (MISC, g_print ("gdk_bitmap_create_from_data: %dx%d = %#x\n",
width, height, private->xwindow));
g_free (bits);
private->colormap = NULL;
gdk_xid_table_insert (&private->xwindow, pixmap);
return pixmap;
}
GdkPixmap*
gdk_pixmap_create_from_data (GdkWindow *window,
const gchar *data,
gint width,
gint height,
gint depth,
GdkColor *fg,
GdkColor *bg)
{
/* Oh wow. I struggled with dozens of lines of code trying to get
* this right using a monochrome Win32 bitmap created from data, and
* a colour DIB section as the result, trying setting pens,
* background colors, whatnot and BitBlt:ing. Nope. Then finally I
* realized it's much easier to do it using gdk...:
*/
GdkPixmap *result = gdk_pixmap_new (window, width, height, depth);
GdkPixmap *source = gdk_bitmap_create_from_data (window, data, width, height);
GdkGC *gc = gdk_gc_new (result);
gdk_gc_set_foreground (gc, fg);
gdk_gc_set_background (gc, bg);
gdk_draw_pixmap (result, gc, source, 0, 0, 0, 0, width, height);
gdk_pixmap_unref (source);
gdk_gc_unref (gc);
GDK_NOTE (MISC, g_print ("gdk_pixmap_create_from_data: %dx%dx%d = %#x\n",
width, height, depth,
((GdkPixmapPrivate *) result)->xwindow));
return result;
}
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];
}
#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");
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;
HBITMAP xpixmap;
SIZE size;
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 = (HBITMAP) anid;
/* get the root window */
window_private = &gdk_root_parent;
/* get information about the BITMAP to fill in the structure for
the gdk window */
GetBitmapDimensionEx (xpixmap, &size);
w_ret = size.cx;
h_ret = size.cy;
/* allocate a new gdk pixmap */
private = g_new(GdkWindowPrivate, 1);
pixmap = (GdkPixmap *)private;
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;
GDK_NOTE (MISC, g_print ("gdk_pixmap_unref: %#x %d%s\n",
private->xwindow, private->ref_count,
(private->ref_count == 0 ? " freeing" : "")));
if (private->ref_count == 0)
{
if (!DeleteObject (private->xwindow))
g_warning ("gdk_pixmap_unref: DeleteObject failed");
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);
}
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