From: Raph Levien Date: Wed, 15 Jul 1998 20:25:52 +0000 (+0000) Subject: Integrating GdkRgb 0.0.3 into the Gtk+ source tree. X-Git-Url: http://pileus.org/git/?a=commitdiff_plain;h=23124810d1f6bd0d653fa24ff78aea9c93ec51e2;p=~andy%2Fgtk Integrating GdkRgb 0.0.3 into the Gtk+ source tree. Integrating GdkRgb 0.0.3 into the Gtk+ source tree. --- diff --git a/ChangeLog b/ChangeLog index 189395df2..753c024af 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,3 +1,22 @@ +Wed Jul 15 12:39:27 1998 Raph Levien + + * This checkin integrates GdkRgb version 0.0.3 into the Gtk 1.1 + source tree. For more information on GdkRgb, please see: + http://www.levien.com/gdkrgb/ + + * gtk/gtkfeatures.h.in (GTK_HAVE_GDK_RGB): added this feature. It + bothers me slightly that the feature is in gdk, and this file is + in gtk, but it's probably ok. + + * gdk/gdk.h: Added an #include of + + * gdk/gdkrgb.c: + * gdk/gdkrgb.h: Added this module. + + * Makefile.am (EXTRA_DIST): Added gdkrgb.c and gdkrgb.h files. + + * configure.in: added AC_C_BIGENDIAN test (needed by GdkRgb). + Wed Jul 15 14:20:10 1998 Tim Janik * gtk/gtksignal.c (gtk_signal_real_emit): pass only the signal_id diff --git a/ChangeLog.pre-2-0 b/ChangeLog.pre-2-0 index 189395df2..753c024af 100644 --- a/ChangeLog.pre-2-0 +++ b/ChangeLog.pre-2-0 @@ -1,3 +1,22 @@ +Wed Jul 15 12:39:27 1998 Raph Levien + + * This checkin integrates GdkRgb version 0.0.3 into the Gtk 1.1 + source tree. For more information on GdkRgb, please see: + http://www.levien.com/gdkrgb/ + + * gtk/gtkfeatures.h.in (GTK_HAVE_GDK_RGB): added this feature. It + bothers me slightly that the feature is in gdk, and this file is + in gtk, but it's probably ok. + + * gdk/gdk.h: Added an #include of + + * gdk/gdkrgb.c: + * gdk/gdkrgb.h: Added this module. + + * Makefile.am (EXTRA_DIST): Added gdkrgb.c and gdkrgb.h files. + + * configure.in: added AC_C_BIGENDIAN test (needed by GdkRgb). + Wed Jul 15 14:20:10 1998 Tim Janik * gtk/gtksignal.c (gtk_signal_real_emit): pass only the signal_id diff --git a/ChangeLog.pre-2-10 b/ChangeLog.pre-2-10 index 189395df2..753c024af 100644 --- a/ChangeLog.pre-2-10 +++ b/ChangeLog.pre-2-10 @@ -1,3 +1,22 @@ +Wed Jul 15 12:39:27 1998 Raph Levien + + * This checkin integrates GdkRgb version 0.0.3 into the Gtk 1.1 + source tree. For more information on GdkRgb, please see: + http://www.levien.com/gdkrgb/ + + * gtk/gtkfeatures.h.in (GTK_HAVE_GDK_RGB): added this feature. It + bothers me slightly that the feature is in gdk, and this file is + in gtk, but it's probably ok. + + * gdk/gdk.h: Added an #include of + + * gdk/gdkrgb.c: + * gdk/gdkrgb.h: Added this module. + + * Makefile.am (EXTRA_DIST): Added gdkrgb.c and gdkrgb.h files. + + * configure.in: added AC_C_BIGENDIAN test (needed by GdkRgb). + Wed Jul 15 14:20:10 1998 Tim Janik * gtk/gtksignal.c (gtk_signal_real_emit): pass only the signal_id diff --git a/ChangeLog.pre-2-2 b/ChangeLog.pre-2-2 index 189395df2..753c024af 100644 --- a/ChangeLog.pre-2-2 +++ b/ChangeLog.pre-2-2 @@ -1,3 +1,22 @@ +Wed Jul 15 12:39:27 1998 Raph Levien + + * This checkin integrates GdkRgb version 0.0.3 into the Gtk 1.1 + source tree. For more information on GdkRgb, please see: + http://www.levien.com/gdkrgb/ + + * gtk/gtkfeatures.h.in (GTK_HAVE_GDK_RGB): added this feature. It + bothers me slightly that the feature is in gdk, and this file is + in gtk, but it's probably ok. + + * gdk/gdk.h: Added an #include of + + * gdk/gdkrgb.c: + * gdk/gdkrgb.h: Added this module. + + * Makefile.am (EXTRA_DIST): Added gdkrgb.c and gdkrgb.h files. + + * configure.in: added AC_C_BIGENDIAN test (needed by GdkRgb). + Wed Jul 15 14:20:10 1998 Tim Janik * gtk/gtksignal.c (gtk_signal_real_emit): pass only the signal_id diff --git a/ChangeLog.pre-2-4 b/ChangeLog.pre-2-4 index 189395df2..753c024af 100644 --- a/ChangeLog.pre-2-4 +++ b/ChangeLog.pre-2-4 @@ -1,3 +1,22 @@ +Wed Jul 15 12:39:27 1998 Raph Levien + + * This checkin integrates GdkRgb version 0.0.3 into the Gtk 1.1 + source tree. For more information on GdkRgb, please see: + http://www.levien.com/gdkrgb/ + + * gtk/gtkfeatures.h.in (GTK_HAVE_GDK_RGB): added this feature. It + bothers me slightly that the feature is in gdk, and this file is + in gtk, but it's probably ok. + + * gdk/gdk.h: Added an #include of + + * gdk/gdkrgb.c: + * gdk/gdkrgb.h: Added this module. + + * Makefile.am (EXTRA_DIST): Added gdkrgb.c and gdkrgb.h files. + + * configure.in: added AC_C_BIGENDIAN test (needed by GdkRgb). + Wed Jul 15 14:20:10 1998 Tim Janik * gtk/gtksignal.c (gtk_signal_real_emit): pass only the signal_id diff --git a/ChangeLog.pre-2-6 b/ChangeLog.pre-2-6 index 189395df2..753c024af 100644 --- a/ChangeLog.pre-2-6 +++ b/ChangeLog.pre-2-6 @@ -1,3 +1,22 @@ +Wed Jul 15 12:39:27 1998 Raph Levien + + * This checkin integrates GdkRgb version 0.0.3 into the Gtk 1.1 + source tree. For more information on GdkRgb, please see: + http://www.levien.com/gdkrgb/ + + * gtk/gtkfeatures.h.in (GTK_HAVE_GDK_RGB): added this feature. It + bothers me slightly that the feature is in gdk, and this file is + in gtk, but it's probably ok. + + * gdk/gdk.h: Added an #include of + + * gdk/gdkrgb.c: + * gdk/gdkrgb.h: Added this module. + + * Makefile.am (EXTRA_DIST): Added gdkrgb.c and gdkrgb.h files. + + * configure.in: added AC_C_BIGENDIAN test (needed by GdkRgb). + Wed Jul 15 14:20:10 1998 Tim Janik * gtk/gtksignal.c (gtk_signal_real_emit): pass only the signal_id diff --git a/ChangeLog.pre-2-8 b/ChangeLog.pre-2-8 index 189395df2..753c024af 100644 --- a/ChangeLog.pre-2-8 +++ b/ChangeLog.pre-2-8 @@ -1,3 +1,22 @@ +Wed Jul 15 12:39:27 1998 Raph Levien + + * This checkin integrates GdkRgb version 0.0.3 into the Gtk 1.1 + source tree. For more information on GdkRgb, please see: + http://www.levien.com/gdkrgb/ + + * gtk/gtkfeatures.h.in (GTK_HAVE_GDK_RGB): added this feature. It + bothers me slightly that the feature is in gdk, and this file is + in gtk, but it's probably ok. + + * gdk/gdk.h: Added an #include of + + * gdk/gdkrgb.c: + * gdk/gdkrgb.h: Added this module. + + * Makefile.am (EXTRA_DIST): Added gdkrgb.c and gdkrgb.h files. + + * configure.in: added AC_C_BIGENDIAN test (needed by GdkRgb). + Wed Jul 15 14:20:10 1998 Tim Janik * gtk/gtksignal.c (gtk_signal_real_emit): pass only the signal_id diff --git a/configure.in b/configure.in index 32ab98450..344ea90e2 100644 --- a/configure.in +++ b/configure.in @@ -367,6 +367,9 @@ AC_HEADER_STDC # Checks for typedefs, structures, and compiler characteristics. AC_C_CONST +# Checks for endianness (needed by GdkRgb). +AC_C_BIGENDIAN + # Checks for library functions. AC_TYPE_SIGNAL AC_FUNC_MMAP diff --git a/gdk/gdk.h b/gdk/gdk.h index 271377206..b0fc10f87 100644 --- a/gdk/gdk.h +++ b/gdk/gdk.h @@ -842,7 +842,7 @@ guint gdk_keyval_to_lower (guint keyval); gboolean gdk_keyval_is_upper (guint keyval); gboolean gdk_keyval_is_lower (guint keyval); - +#include #ifdef __cplusplus } diff --git a/gdk/gdkrgb.c b/gdk/gdkrgb.c new file mode 100644 index 000000000..4199aa3c6 --- /dev/null +++ b/gdk/gdkrgb.c @@ -0,0 +1,2570 @@ +/* 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. + */ + +/* For more information on GdkRgb, see http://www.levien.com/gdkrgb/ + + Raph Levien + */ + +#include +#include + +#include + +#define ENABLE_GRAYSCALE + +#include +#include "gdkrgb.h" + +typedef struct _GdkRgbInfo GdkRgbInfo; + +typedef void (*GdkRgbConvFunc) (GdkImage *image, + gint x0, gint y0, + gint width, gint height, + guchar *buf, int rowstride, + gint x_align, gint y_align, + GdkRgbCmap *cmap); + +/* Some of these fields should go, as they're not being used at all. + Globals should generally migrate into here - it's very likely that + we'll want to run more than one GdkRgbInfo context at the same time + (i.e. some but not all windows have privately installed + colormaps). */ + +struct _GdkRgbInfo +{ + GdkVisual *visual; + GdkColormap *cmap; + + gulong *color_pixels; + gulong *gray_pixels; + gulong *reserved_pixels; + + gulong *lookup_red; + gulong *lookup_green; + gulong *lookup_blue; + + GtkDitherInfo *dither_red; + GtkDitherInfo *dither_green; + GtkDitherInfo *dither_blue; + GtkDitherInfo *dither_gray; + guchar ***dither_matrix; + + guint nred_shades; + guint ngreen_shades; + guint nblue_shades; + guint ngray_shades; + guint nreserved; + + guint bpp; + gint cmap_alloced; + gdouble gamma; + + /* Generally, the stage buffer is used to convert 32bit RGB, gray, + and indexed images into 24 bit packed RGB. */ + guchar *stage_buf; + + GdkRgbCmap *gray_cmap; + + gboolean dith_default; + + /* Convert functions */ + GdkRgbConvFunc conv; + GdkRgbConvFunc conv_d; + + GdkRgbConvFunc conv_32; + GdkRgbConvFunc conv_32_d; + + GdkRgbConvFunc conv_gray; + GdkRgbConvFunc conv_gray_d; + + GdkRgbConvFunc conv_indexed; + GdkRgbConvFunc conv_indexed_d; +}; + +static gboolean gdk_rgb_install_cmap = FALSE; +static gint gdk_rgb_min_colors = 5 * 5 * 5; +static gboolean gdk_rgb_verbose = FALSE; + +#define IMAGE_WIDTH 256 +#define STAGE_ROWSTRIDE (IMAGE_WIDTH * 3) +#define IMAGE_HEIGHT 64 +#define N_IMAGES 6 + +static GdkRgbInfo *image_info = NULL; +static GdkImage *static_image[N_IMAGES]; +static gint static_image_idx; + +static guchar *colorcube; +static guchar *colorcube_d; + +static gint +gdk_rgb_cmap_fail (const char *msg, GdkColormap *cmap, gulong *pixels) +{ + gulong free_pixels[256]; + gint n_free; + gint i; + +#ifdef VERBOSE + g_print ("%s", msg); +#endif + n_free = 0; + for (i = 0; i < 256; i++) + if (pixels[i] < 256) + free_pixels[n_free++] = pixels[i]; + if (n_free) + gdk_colors_free (cmap, free_pixels, n_free, 0); + return 0; +} + +static void +gdk_rgb_make_colorcube (gulong *pixels, gint nr, gint ng, gint nb) +{ + guchar rt[16], gt[16], bt[16]; + gint i; + + colorcube = g_new (guchar, 4096); + for (i = 0; i < 16; i++) + { + rt[i] = ng * nb * ((i * 17 * (nr - 1) + 128) >> 8); + gt[i] = nb * ((i * 17 * (ng - 1) + 128) >> 8); + bt[i] = ((i * 17 * (nb - 1) + 128) >> 8); + } + + for (i = 0; i < 4096; i++) + { + colorcube[i] = pixels[rt[i >> 8] + gt[(i >> 4) & 0x0f] + bt[i & 0x0f]]; +#ifdef VERBOSE + g_print ("%03x %02x %x %x %x\n", i, colorcube[i], rt[i >> 8], gt[(i >> 4) & 0x0f], bt[i & 0x0f]); +#endif + } +} + +/* this is the colorcube suitable for dithering */ +static void +gdk_rgb_make_colorcube_d (gulong *pixels, gint nr, gint ng, gint nb) +{ + gint r, g, b; + gint i; + + colorcube_d = g_new (guchar, 512); + for (i = 0; i < 512; i++) + { + r = MIN (nr - 1, i >> 6); + g = MIN (ng - 1, (i >> 3) & 7); + b = MIN (nb - 1, i & 7); + colorcube_d[i] = pixels[(r * ng + g) * nb + b]; + } +} + +/* Try installing a color cube of the specified size. + Make the colorcube and return TRUE on success */ +static gint +gdk_rgb_try_colormap (gint nr, gint ng, gint nb) +{ + gint r, g, b; + gint ri, gi, bi; + gint r0, g0, b0; + GdkColormap *cmap; + GdkColor color; + gulong pixels[256]; + gulong junk[256]; + gint i; + gint d2; + gint colors_needed; + gint idx; + gint best[256]; + + if (nr * ng * nb < gdk_rgb_min_colors) + return FALSE; + + if (image_info->cmap_alloced) + cmap = image_info->cmap; + else + cmap = gdk_colormap_get_system (); + + colors_needed = nr * ng * nb; + for (i = 0; i < 256; i++) + { + best[i] = 192; + pixels[i] = 256; + } + +#ifndef GAMMA + if (!gdk_rgb_install_cmap) + /* find color cube colors that are already present */ + for (i = 0; i < MIN (256, cmap->size); i++) + { + r = cmap->colors[i].red >> 8; + g = cmap->colors[i].green >> 8; + b = cmap->colors[i].blue >> 8; + ri = (r * (nr - 1) + 128) >> 8; + gi = (g * (ng - 1) + 128) >> 8; + bi = (b * (nb - 1) + 128) >> 8; + r0 = ri * 255 / (nr - 1); + g0 = gi * 255 / (ng - 1); + b0 = bi * 255 / (nb - 1); + idx = ((ri * nr) + gi) * nb + bi; + d2 = (r - r0) * (r - r0) + (g - g0) * (g - g0) + (b - b0) * (b - b0); + if (d2 < best[idx]) { + if (pixels[idx] < 256) + gdk_colors_free (cmap, pixels + idx, 1, 0); + else + colors_needed--; + color = cmap->colors[i]; + if (!gdk_color_alloc (cmap, &color)) + return gdk_rgb_cmap_fail ("error allocating system color\n", + cmap, pixels); + pixels[idx] = color.pixel; /* which is almost certainly i */ + best[idx] = d2; + } + } +#endif + + if (colors_needed) + { + if (!gdk_colors_alloc (cmap, 0, NULL, 0, junk, colors_needed)) + { + char tmp_str[80]; + + sprintf (tmp_str, + "%d %d %d colormap failed (in gdk_colors_alloc)\n", + nr, ng, nb); + return gdk_rgb_cmap_fail (tmp_str, cmap, pixels); + } + + gdk_colors_free (cmap, junk, colors_needed, 0); + } + + for (r = 0, i = 0; r < nr; r++) + for (g = 0; g < ng; g++) + for (b = 0; b < nb; b++, i++) + { + if (pixels[i] == 256) + { + color.red = r * 65535 / (nr - 1); + color.green = g * 65535 / (ng - 1); + color.blue = b * 65535 / (nb - 1); + +#ifdef GAMMA + color.red = 65535 * pow (color.red / 65535.0, 0.5); + color.green = 65535 * pow (color.green / 65535.0, 0.5); + color.blue = 65535 * pow (color.blue / 65535.0, 0.5); +#endif + + if (!gdk_color_alloc (cmap, &color)) + { + char tmp_str[80]; + + sprintf (tmp_str, "%d %d %d colormap failed\n", + nr, ng, nb); + return gdk_rgb_cmap_fail (tmp_str, + cmap, pixels); + } + pixels[i] = color.pixel; + } +#ifdef VERBOSE + g_print ("%d: %lx\n", i, pixels[i]); +#endif + } + + image_info->nred_shades = nr; + image_info->ngreen_shades = ng; + image_info->nblue_shades = nb; + gdk_rgb_make_colorcube (pixels, nr, ng, nb); + gdk_rgb_make_colorcube_d (pixels, nr, ng, nb); + return TRUE; +} + +/* Return TRUE on success. */ +static gboolean +gdk_rgb_do_colormaps (void) +{ + const gint sizes[][3] = { + /* { 6, 7, 6 }, */ + { 6, 6, 6 }, + { 6, 6, 5 }, + { 6, 6, 4 }, + { 5, 5, 5 }, + { 5, 5, 4 }, + { 4, 4, 4 }, + { 4, 4, 3 }, + { 3, 3, 3 }, + { 2, 2, 2 } + }; + const gint n_sizes = sizeof(sizes) / (3 * sizeof(gint)); + gint i; + + for (i = 0; i < n_sizes; i++) + if (gdk_rgb_try_colormap (sizes[i][0], sizes[i][1], sizes[i][2])) + return TRUE; + return FALSE; +} + +void +gdk_rgb_set_verbose (gboolean verbose) +{ + gdk_rgb_verbose = verbose; +} + +void +gdk_rgb_set_install (gboolean install) +{ + gdk_rgb_install_cmap = install; +} + +void +gdk_rgb_set_min_colors (gint min_colors) +{ + gdk_rgb_min_colors = min_colors; +} + +/* Return a "score" based on the following criteria (in hex): + + x000 is the quality - 1 is 1bpp, 2 is 4bpp, + 4 is 8bpp, + 7 is 15bpp truecolor, 8 is 16bpp truecolor, + 9 is 24bpp truecolor. + 0x00 is the speed - 1 is the normal case, + 2 means faster than normal + 00x0 gets a point for being the system visual + 000x gets a point for being pseudocolor + + A caveat: in the 8bpp modes, being the system visual seems to be + quite important. Thus, all of the 8bpp modes should be ranked at + the same speed. +*/ +static guint32 +gdk_rgb_score_visual (GdkVisual *visual) +{ + guint32 quality, speed, sys, pseudo; + gchar* visual_names[] = + { + "static gray", + "grayscale", + "static color", + "pseudo color", + "true color", + "direct color", + }; + + + quality = 0; + speed = 1; + sys = 0; + if (visual->type == GDK_VISUAL_TRUE_COLOR || + visual->type == GDK_VISUAL_DIRECT_COLOR) + { + if (visual->depth == 24) + { + quality = 9; + /* Should test for MSB visual here, and set speed if so. */ + } + else if (visual->depth == 16) + quality = 8; + else if (visual->depth == 15) + quality = 7; + else if (visual->depth == 8) + quality = 4; + } + else if (visual->type == GDK_VISUAL_PSEUDO_COLOR) + { + if (visual->depth == 8) + quality = 4; + } + else if (visual->type == GDK_VISUAL_STATIC_GRAY +#ifdef ENABLE_GRAYSCALE + || visual->type == GDK_VISUAL_GRAYSCALE +#endif + ) + { + if (visual->depth == 8) + quality = 4; + else if (visual->depth == 4) + quality = 2; + else if (visual->depth == 1) + quality = 1; + } + + if (quality == 0) + return 0; + + sys = (visual == gdk_visual_get_system ()); + + pseudo = (visual->type == GDK_VISUAL_PSEUDO_COLOR); + + if (gdk_rgb_verbose) + g_print ("Visual 0x%x, type = %s, depth = %d, %x:%x:%x%s; score=%x\n", + (gint)(((GdkVisualPrivate *)visual)->xvisual->visualid), + visual_names[visual->type], + visual->depth, + visual->red_mask, + visual->green_mask, + visual->blue_mask, + sys ? " (system)" : "", + (quality << 12) | (speed << 8) | (sys << 4) | pseudo); + + return (quality << 12) | (speed << 8) | (sys << 4) | pseudo; +} + +static void +gdk_rgb_choose_visual (void) +{ + GList *visuals; + guint32 score, best_score; + GdkVisual *visual, *best_visual; + + visuals = gdk_list_visuals (); + + best_visual = visuals->data; + best_score = gdk_rgb_score_visual (best_visual); + visuals = visuals->next; + while (visuals) + { + visual = visuals->data; + score = gdk_rgb_score_visual (visual); + if (score > best_score) + { + best_score = score; + best_visual = visual; + } + visuals = visuals->next; + } + + image_info->visual = best_visual; +} + +static void gdk_rgb_select_conv (GdkImage *image); + +static void +gdk_rgb_set_gray_cmap (GdkColormap *cmap) +{ + gint i; + GdkColor color; + gint status; + gulong pixels[256]; + gint r, g, b, gray; + + for (i = 0; i < 256; i++) + { + color.pixel = i; + color.red = i * 257; + color.green = i * 257; + color.blue = i * 257; + status = gdk_color_alloc (cmap, &color); + pixels[i] = color.pixel; +#ifdef VERBOSE + g_print ("allocating pixel %d, %x %x %x, result %d\n", + color.pixel, color.red, color.green, color.blue, status); +#endif + } + + /* Now, we make fake colorcubes - we ultimately just use the pseudocolor + methods. */ + + colorcube = g_new (guchar, 4096); + + for (i = 0; i < 4096; i++) + { + r = (i >> 4) & 0xf0; + r = r | r >> 4; + g = i & 0xf0; + g = g | g >> 4; + b = (i << 4 & 0xf0); + b = b | b >> 4; + gray = (g + ((r + b) >> 1)) >> 1; + colorcube[i] = pixels[gray]; + } +} + +void +gdk_rgb_init (void) +{ + gint i; + gint byte_order[1] = { 1 }; + + /* check endian sanity */ +#ifdef WORDS_BIGENDIAN + if (((char *)byte_order)[0] == 1) + g_error ("gtk_rgb_init: WORDS_BIGENDIAN is defined, but this is a little endian machine.\n\n"); +#else + if (((char *)byte_order)[0] != 1) + g_error ("gtk_rgb_init: WORDS_BIGENDIAN is not defined, but this is a little endian machine.\n\n"); +#endif + + if (image_info == NULL) + { + image_info = g_new0 (GdkRgbInfo, 1); + + image_info->visual = NULL; + image_info->cmap = NULL; + + image_info->color_pixels = NULL; + image_info->gray_pixels = NULL; + image_info->reserved_pixels = NULL; + + image_info->lookup_red = NULL; + image_info->lookup_green = NULL; + image_info->lookup_blue = NULL; + + image_info->dither_red = NULL; + image_info->dither_green = NULL; + image_info->dither_blue = NULL; + image_info->dither_gray = NULL; + image_info->dither_matrix = NULL; + + image_info->nred_shades = 6; + image_info->ngreen_shades = 6; + image_info->nblue_shades = 4; + image_info->ngray_shades = 24; + image_info->nreserved = 0; + + image_info->bpp = 0; + image_info->cmap_alloced = FALSE; + image_info->gamma = 1.0; + + image_info->stage_buf = NULL; + + gdk_rgb_choose_visual (); + + if (image_info->visual->type == GDK_VISUAL_PSEUDO_COLOR) + { + if (gdk_rgb_install_cmap || + image_info->visual != gdk_visual_get_system ()) + { + image_info->cmap = gdk_colormap_new (image_info->visual, FALSE); + image_info->cmap_alloced = TRUE; + } + if (!gdk_rgb_do_colormaps ()) + { + image_info->cmap = gdk_colormap_new (image_info->visual, FALSE); + image_info->cmap_alloced = TRUE; + gdk_rgb_do_colormaps (); + } + if (gdk_rgb_verbose) + g_print ("color cube: %d x %d x %d\n", + image_info->nred_shades, + image_info->ngreen_shades, + image_info->nblue_shades); + + if (!image_info->cmap_alloced) + image_info->cmap = gdk_colormap_get_system (); + } +#ifdef ENABLE_GRAYSCALE + else if (image_info->visual->type == GDK_VISUAL_GRAYSCALE) + { + image_info->cmap = gdk_colormap_new (image_info->visual, FALSE); + gdk_rgb_set_gray_cmap (image_info->cmap); + image_info->cmap_alloced = TRUE; + } +#endif + else + { + /* Always install colormap in direct color. */ + if (image_info->visual->type != GDK_VISUAL_DIRECT_COLOR && + image_info->visual == gdk_visual_get_system ()) + image_info->cmap = gdk_colormap_get_system (); + else + { + image_info->cmap = gdk_colormap_new (image_info->visual, FALSE); + image_info->cmap_alloced = TRUE; + } + } + + for (i = 0; i < N_IMAGES; i++) + static_image[i] = gdk_image_new (GDK_IMAGE_FASTEST, + image_info->visual, + IMAGE_WIDTH, IMAGE_HEIGHT); + + image_info->bpp = static_image[0]->bpp; + + gdk_rgb_select_conv (static_image[0]); + + } +} + +/* convert an rgb value into an X pixel code */ +gulong +gdk_rgb_xpixel_from_rgb (guint32 rgb) +{ + gulong pixel; + + if (image_info->visual->type == GDK_VISUAL_PSEUDO_COLOR) + pixel = colorcube[((rgb & 0xf00000) >> 12) | + ((rgb & 0xf000) >> 8) | + ((rgb & 0xf0) >> 4)]; + else + { +#ifdef VERBOSE + g_print ("shift, prec: r %d %d g %d %d b %d %d\n", + image_info->visual->red_shift, + image_info->visual->red_prec, + image_info->visual->green_shift, + image_info->visual->green_prec, + image_info->visual->blue_shift, + image_info->visual->blue_prec); +#endif + + pixel = (((((rgb & 0xff0000) >> 16) >> + (8 - image_info->visual->red_prec)) << + image_info->visual->red_shift) + + ((((rgb & 0xff00) >> 8) >> + (8 - image_info->visual->green_prec)) << + image_info->visual->green_shift) + + (((rgb & 0xff) >> + (8 - image_info->visual->blue_prec)) << + image_info->visual->blue_shift)); + + ; + } + + return pixel; +} + +void +gdk_rgb_gc_set_foreground (GdkGC *gc, guint32 rgb) +{ + GdkColor color; + + color.pixel = gdk_rgb_xpixel_from_rgb (rgb); + gdk_gc_set_foreground (gc, &color); +} + +void +gdk_rgb_gc_set_background (GdkGC *gc, guint32 rgb) +{ + GdkColor color; + + color.pixel = gdk_rgb_xpixel_from_rgb (rgb); + gdk_gc_set_background (gc, &color); +} + +#ifndef WORDS_BIGENDIAN +#define HAIRY_CONVERT_8 +#endif + +#ifdef HAIRY_CONVERT_8 +static void +gdk_rgb_convert_8 (GdkImage *image, + gint x0, gint y0, gint width, gint height, + guchar *buf, int rowstride, + gint x_align, gint y_align, GdkRgbCmap *cmap) +{ + int x, y; + gint bpl; + guchar *obuf, *obptr; + guchar *bptr, *bp2; + gint r, g, b; + + bptr = buf; + bpl = image->bpl; + obuf = ((guchar *)image->mem) + y0 * bpl + x0; + for (y = 0; y < height; y++) + { + bp2 = bptr; + obptr = obuf; + if (width < 8 || (((unsigned long)obuf | (unsigned long) bp2) & 3)) + { + for (x = 0; x < width; x++) + { + r = *bp2++; + g = *bp2++; + b = *bp2++; + obptr[0] = colorcube[((r & 0xf0) << 4) | + (g & 0xf0) | + (b >> 4)]; + obptr++; + } + } + else + { + for (x = 0; x < width - 3; x += 4) + { + guint32 r1b0g0r0; + guint32 g2r2b1g1; + guint32 b3g3r3b2; + + r1b0g0r0 = ((guint32 *)bp2)[0]; + g2r2b1g1 = ((guint32 *)bp2)[1]; + b3g3r3b2 = ((guint32 *)bp2)[2]; + ((guint32 *)obptr)[0] = + colorcube[((r1b0g0r0 & 0xf0) << 4) | + ((r1b0g0r0 & 0xf000) >> 8) | + ((r1b0g0r0 & 0xf00000) >> 20)] | + (colorcube[((r1b0g0r0 & 0xf0000000) >> 20) | + (g2r2b1g1 & 0xf0) | + ((g2r2b1g1 & 0xf000) >> 12)] << 8) | + (colorcube[((g2r2b1g1 & 0xf00000) >> 12) | + ((g2r2b1g1 & 0xf0000000) >> 24) | + ((b3g3r3b2 & 0xf0) >> 4)] << 16) | + (colorcube[((b3g3r3b2 & 0xf000) >> 4) | + ((b3g3r3b2 & 0xf00000) >> 16) | + (b3g3r3b2 >> 28)] << 24); + bp2 += 12; + obptr += 4; + } + for (; x < width; x++) + { + r = *bp2++; + g = *bp2++; + b = *bp2++; + obptr[0] = colorcube[((r & 0xf0) << 4) | + (g & 0xf0) | + (b >> 4)]; + obptr++; + } + } + bptr += rowstride; + obuf += bpl; + } +} +#else +static void +gdk_rgb_convert_8 (GdkImage *image, + gint x0, gint y0, gint width, gint height, + guchar *buf, int rowstride, + gint x_align, gint y_align, GdkRgbCmap *cmap) +{ + int x, y; + gint bpl; + guchar *obuf, *obptr; + guchar *bptr, *bp2; + gint r, g, b; + + bptr = buf; + bpl = image->bpl; + obuf = ((guchar *)image->mem) + y0 * bpl + x0; + for (y = 0; y < height; y++) + { + bp2 = bptr; + obptr = obuf; + for (x = 0; x < width; x++) + { + r = *bp2++; + g = *bp2++; + b = *bp2++; + obptr[0] = colorcube[((r & 0xf0) << 4) | + (g & 0xf0) | + (b >> 4)]; + obptr++; + } + bptr += rowstride; + obuf += bpl; + } +} +#endif + +#if 1 + +/* This dither table was generated by Raph Levien using patented + technology (US Patent 5,276,535). The dither table itself is in the + public domain. */ + +#define DM_WIDTH 128 +#define DM_HEIGHT 128 +static guchar DM[128][128] = +{ + { 0, 41, 23, 5, 17, 39, 7, 15, 62, 23, 40, 51, 31, 47, 9, 32, 52, 27, 57, 25, 6, 61, 27, 52, 37, 7, 40, 63, 18, 36, 10, 42, 25, 62, 45, 34, 20, 42, 37, 14, 35, 29, 50, 10, 61, 2, 40, 8, 37, 12, 58, 22, 5, 41, 10, 39, 0, 60, 11, 46, 2, 55, 38, 17, 36, 59, 13, 54, 37, 56, 8, 29, 16, 13, 63, 22, 41, 55, 7, 20, 49, 14, 23, 55, 37, 23, 19, 36, 15, 49, 23, 63, 30, 14, 38, 27, 53, 13, 22, 41, 19, 31, 7, 19, 50, 30, 49, 16, 3, 32, 56, 40, 29, 34, 8, 48, 19, 45, 4, 51, 12, 46, 35, 49, 16, 42, 12, 62 }, + { 30, 57, 36, 54, 47, 34, 52, 27, 43, 4, 28, 7, 17, 36, 62, 13, 44, 7, 18, 48, 33, 21, 44, 14, 30, 47, 12, 33, 5, 55, 31, 58, 13, 30, 4, 17, 52, 10, 60, 26, 46, 0, 39, 27, 42, 22, 47, 25, 60, 32, 9, 38, 48, 17, 59, 30, 49, 18, 34, 25, 51, 19, 5, 48, 21, 8, 28, 46, 1, 32, 41, 19, 54, 47, 37, 18, 28, 11, 44, 30, 39, 56, 2, 33, 8, 42, 61, 28, 58, 8, 46, 9, 41, 4, 58, 7, 21, 48, 59, 10, 52, 14, 42, 57, 12, 25, 7, 53, 42, 24, 11, 50, 17, 59, 42, 2, 36, 60, 32, 17, 63, 29, 21, 7, 59, 32, 24, 39 }, + { 22, 8, 16, 32, 3, 25, 13, 57, 18, 45, 58, 39, 55, 20, 5, 42, 23, 34, 63, 1, 51, 10, 58, 4, 60, 23, 53, 27, 44, 21, 3, 48, 8, 50, 43, 54, 27, 32, 5, 55, 21, 58, 12, 53, 6, 36, 14, 50, 17, 29, 53, 15, 24, 52, 7, 36, 13, 42, 4, 53, 9, 35, 61, 26, 56, 32, 49, 15, 62, 23, 6, 60, 2, 31, 4, 48, 58, 38, 15, 61, 5, 25, 47, 28, 50, 15, 7, 40, 3, 32, 33, 52, 25, 50, 35, 42, 61, 3, 28, 36, 23, 63, 4, 33, 46, 62, 36, 23, 60, 6, 54, 28, 4, 37, 23, 55, 25, 8, 42, 54, 14, 6, 56, 38, 19, 52, 4, 46 }, + { 48, 53, 43, 12, 45, 63, 30, 37, 9, 34, 21, 1, 25, 47, 29, 58, 3, 54, 15, 39, 29, 17, 38, 35, 20, 43, 1, 49, 15, 59, 29, 39, 22, 35, 16, 23, 1, 47, 39, 18, 8, 44, 25, 31, 57, 19, 63, 4, 45, 3, 42, 61, 1, 31, 45, 20, 57, 29, 62, 21, 32, 41, 14, 44, 3, 39, 5, 34, 10, 43, 51, 35, 23, 52, 40, 10, 21, 1, 53, 18, 51, 43, 12, 62, 18, 54, 26, 51, 20, 57, 14, 1, 62, 16, 11, 18, 32, 39, 17, 44, 1, 48, 26, 37, 18, 2, 51, 14, 28, 45, 35, 18, 57, 13, 47, 11, 51, 20, 2, 39, 31, 47, 25, 1, 50, 11, 60, 7 }, + { 18, 28, 1, 56, 21, 10, 51, 2, 46, 54, 14, 61, 11, 50, 13, 38, 19, 31, 45, 9, 55, 24, 47, 5, 54, 9, 62, 11, 35, 8, 51, 14, 57, 6, 63, 40, 58, 14, 51, 28, 62, 34, 15, 48, 1, 41, 30, 35, 55, 21, 34, 11, 49, 37, 8, 52, 4, 23, 15, 43, 1, 58, 11, 23, 53, 16, 55, 26, 58, 18, 27, 12, 45, 14, 25, 63, 42, 33, 27, 35, 9, 31, 21, 38, 1, 44, 34, 12, 48, 38, 21, 44, 29, 47, 26, 53, 1, 46, 54, 8, 59, 29, 11, 55, 22, 41, 33, 20, 39, 1, 48, 9, 44, 32, 5, 62, 29, 44, 57, 23, 10, 58, 34, 43, 15, 37, 26, 33 }, + { 51, 38, 59, 24, 35, 42, 19, 60, 5, 32, 41, 26, 43, 33, 7, 53, 48, 11, 59, 23, 42, 2, 61, 30, 16, 40, 32, 24, 56, 41, 19, 33, 37, 26, 47, 9, 31, 22, 2, 45, 9, 54, 4, 37, 21, 52, 11, 23, 7, 57, 16, 25, 55, 18, 63, 27, 46, 39, 56, 10, 50, 37, 29, 47, 19, 63, 24, 9, 46, 2, 39, 60, 9, 57, 30, 7, 49, 11, 59, 3, 45, 57, 5, 60, 29, 22, 5, 60, 30, 9, 59, 18, 40, 6, 57, 36, 30, 12, 24, 34, 15, 40, 52, 6, 49, 9, 58, 4, 63, 12, 26, 61, 22, 53, 38, 16, 35, 14, 28, 50, 42, 17, 5, 28, 62, 20, 54, 12 }, + { 26, 6, 31, 15, 49, 6, 38, 27, 22, 49, 16, 56, 2, 62, 30, 21, 0, 36, 28, 6, 49, 32, 13, 52, 26, 50, 19, 46, 3, 26, 62, 0, 53, 12, 29, 3, 53, 41, 60, 24, 38, 13, 58, 16, 43, 9, 59, 39, 46, 28, 44, 40, 2, 33, 13, 41, 16, 6, 47, 31, 26, 17, 57, 6, 38, 0, 42, 36, 29, 52, 20, 31, 48, 0, 34, 56, 20, 36, 23, 54, 14, 41, 24, 37, 10, 55, 46, 25, 16, 45, 36, 4, 55, 23, 15, 8, 50, 62, 5, 56, 44, 20, 13, 28, 59, 31, 24, 47, 31, 52, 37, 17, 40, 0, 26, 49, 3, 60, 7, 33, 0, 61, 53, 40, 8, 45, 2, 41 }, + { 16, 63, 43, 4, 61, 24, 56, 13, 53, 8, 36, 12, 24, 41, 16, 46, 60, 26, 52, 39, 14, 57, 21, 37, 0, 45, 7, 59, 38, 17, 43, 10, 45, 20, 61, 43, 19, 11, 33, 17, 50, 32, 23, 61, 28, 49, 26, 0, 18, 51, 5, 60, 22, 58, 29, 0, 59, 34, 19, 62, 3, 52, 7, 44, 30, 59, 13, 50, 15, 62, 7, 17, 38, 22, 44, 15, 40, 4, 47, 28, 33, 17, 49, 16, 51, 40, 10, 56, 0, 53, 13, 49, 28, 38, 60, 21, 43, 19, 37, 27, 3, 51, 34, 39, 0, 45, 15, 43, 10, 21, 3, 55, 8, 33, 59, 10, 41, 18, 52, 24, 46, 20, 30, 13, 58, 22, 36, 57 }, + { 50, 34, 11, 47, 29, 17, 44, 0, 33, 63, 28, 46, 52, 5, 57, 10, 42, 18, 4, 63, 20, 8, 44, 10, 56, 34, 14, 29, 5, 54, 23, 59, 32, 49, 7, 34, 49, 27, 56, 0, 42, 7, 46, 3, 40, 6, 54, 32, 62, 13, 36, 10, 47, 8, 35, 49, 24, 51, 12, 40, 22, 35, 60, 12, 22, 51, 33, 4, 40, 25, 43, 55, 5, 54, 12, 61, 26, 51, 8, 62, 0, 53, 7, 63, 2, 32, 19, 34, 42, 24, 31, 63, 2, 10, 45, 33, 0, 48, 9, 61, 22, 47, 8, 62, 18, 56, 7, 54, 27, 57, 46, 30, 50, 19, 45, 30, 56, 36, 22, 47, 11, 38, 3, 51, 32, 48, 18, 9 }, + { 0, 21, 40, 19, 52, 9, 37, 48, 20, 40, 3, 18, 27, 38, 35, 22, 31, 56, 13, 35, 46, 28, 60, 40, 27, 18, 61, 50, 41, 30, 7, 36, 2, 25, 16, 57, 5, 15, 47, 29, 55, 19, 30, 52, 15, 34, 20, 12, 43, 30, 20, 54, 25, 44, 53, 12, 38, 5, 55, 27, 48, 15, 33, 27, 45, 8, 19, 28, 56, 11, 33, 49, 18, 36, 29, 2, 45, 16, 39, 19, 31, 43, 27, 35, 20, 52, 26, 6, 61, 11, 41, 17, 29, 51, 20, 56, 25, 32, 41, 17, 53, 31, 25, 14, 42, 23, 35, 16, 38, 6, 34, 12, 15, 62, 6, 21, 13, 1, 63, 9, 55, 27, 43, 25, 14, 4, 31, 55 }, + { 44, 29, 61, 2, 35, 58, 26, 15, 60, 10, 51, 59, 14, 55, 8, 50, 2, 44, 25, 51, 1, 33, 16, 4, 48, 36, 2, 21, 12, 57, 48, 13, 51, 55, 40, 28, 37, 62, 8, 39, 12, 63, 36, 10, 59, 24, 56, 47, 9, 50, 41, 1, 32, 17, 6, 21, 61, 30, 9, 43, 1, 54, 41, 2, 54, 37, 48, 61, 1, 46, 21, 3, 58, 24, 50, 32, 60, 10, 57, 25, 46, 12, 59, 4, 45, 13, 57, 47, 27, 39, 5, 58, 47, 14, 35, 4, 52, 13, 60, 6, 36, 10, 45, 55, 4, 50, 29, 2, 61, 50, 25, 58, 44, 24, 36, 42, 54, 28, 40, 32, 16, 56, 6, 62, 46, 39, 60, 23 }, + { 7, 48, 14, 54, 23, 40, 4, 45, 30, 22, 42, 32, 1, 44, 20, 29, 58, 8, 37, 19, 41, 54, 24, 58, 9, 53, 25, 46, 34, 16, 23, 38, 27, 11, 18, 1, 52, 21, 35, 22, 48, 5, 25, 45, 18, 38, 2, 27, 35, 4, 57, 15, 62, 39, 57, 28, 42, 16, 36, 60, 24, 18, 10, 63, 20, 5, 16, 23, 37, 14, 59, 27, 41, 8, 13, 42, 21, 35, 6, 50, 3, 38, 15, 48, 30, 39, 17, 3, 49, 14, 53, 33, 24, 7, 61, 44, 11, 39, 23, 49, 19, 58, 1, 32, 36, 12, 60, 41, 20, 13, 41, 4, 39, 1, 48, 8, 18, 51, 14, 44, 5, 37, 21, 34, 1, 26, 10, 37 }, + { 53, 36, 27, 9, 50, 12, 32, 55, 2, 57, 7, 17, 48, 34, 63, 15, 40, 26, 62, 11, 49, 6, 31, 39, 22, 42, 6, 63, 1, 39, 60, 4, 42, 61, 32, 45, 24, 44, 2, 60, 16, 41, 53, 1, 33, 61, 49, 17, 63, 23, 45, 26, 33, 3, 23, 46, 2, 50, 20, 4, 45, 34, 49, 30, 39, 58, 44, 31, 53, 34, 6, 52, 30, 47, 63, 1, 53, 22, 42, 31, 58, 23, 54, 22, 61, 8, 36, 59, 22, 35, 21, 1, 55, 40, 27, 16, 30, 54, 2, 29, 43, 16, 39, 63, 21, 46, 26, 10, 48, 32, 19, 53, 30, 56, 26, 60, 33, 4, 61, 23, 49, 59, 15, 53, 19, 58, 42, 16 }, + { 20, 5, 59, 46, 25, 62, 7, 19, 43, 25, 37, 61, 11, 24, 4, 54, 12, 52, 3, 32, 17, 61, 12, 47, 15, 55, 18, 31, 53, 28, 9, 50, 21, 6, 55, 9, 58, 14, 54, 26, 33, 7, 31, 58, 13, 21, 8, 42, 29, 6, 37, 11, 48, 52, 14, 60, 11, 39, 56, 32, 14, 58, 7, 26, 17, 4, 42, 8, 11, 47, 19, 38, 10, 17, 26, 37, 9, 55, 28, 13, 18, 40, 6, 33, 1, 43, 25, 11, 51, 7, 62, 43, 18, 37, 3, 57, 45, 9, 38, 58, 5, 52, 27, 7, 17, 53, 5, 57, 37, 2, 63, 9, 22, 15, 11, 38, 25, 45, 35, 0, 28, 10, 41, 30, 50, 8, 31, 57 }, + { 49, 33, 16, 38, 1, 42, 51, 34, 53, 14, 28, 49, 30, 56, 36, 23, 43, 20, 38, 56, 22, 45, 28, 0, 62, 35, 26, 44, 11, 19, 52, 35, 44, 15, 30, 38, 10, 31, 40, 4, 46, 50, 20, 40, 27, 44, 51, 14, 56, 53, 19, 59, 7, 29, 41, 19, 35, 25, 8, 52, 22, 44, 13, 53, 50, 32, 61, 24, 56, 25, 63, 0, 45, 57, 33, 59, 16, 46, 4, 62, 50, 11, 60, 37, 52, 19, 55, 29, 37, 46, 13, 26, 48, 10, 50, 34, 21, 63, 26, 13, 42, 33, 22, 55, 35, 28, 43, 15, 24, 51, 27, 34, 46, 49, 58, 3, 52, 9, 57, 19, 48, 55, 3, 35, 12, 45, 24, 3 }, + { 41, 11, 56, 28, 18, 31, 22, 10, 37, 6, 47, 13, 3, 41, 9, 46, 0, 48, 29, 6, 34, 10, 55, 37, 20, 8, 49, 3, 41, 59, 14, 25, 0, 63, 19, 47, 27, 51, 17, 57, 23, 10, 61, 6, 54, 3, 38, 31, 0, 22, 34, 43, 20, 55, 31, 0, 49, 63, 29, 38, 3, 62, 28, 40, 0, 22, 14, 35, 2, 48, 15, 43, 23, 14, 3, 29, 49, 20, 39, 34, 0, 44, 29, 9, 15, 47, 5, 42, 0, 31, 58, 5, 31, 61, 23, 15, 0, 47, 19, 50, 24, 3, 59, 11, 44, 0, 31, 59, 6, 42, 17, 60, 0, 39, 20, 31, 43, 17, 29, 40, 12, 25, 60, 22, 52, 15, 63, 29 }, + { 20, 52, 8, 44, 62, 4, 59, 49, 17, 63, 21, 39, 60, 18, 52, 27, 33, 59, 14, 51, 59, 43, 24, 5, 51, 30, 57, 17, 32, 5, 37, 56, 48, 34, 42, 3, 60, 5, 36, 13, 43, 37, 18, 34, 25, 12, 59, 24, 47, 36, 11, 50, 3, 38, 9, 58, 16, 5, 43, 18, 47, 10, 37, 18, 59, 46, 29, 52, 40, 12, 34, 28, 56, 36, 53, 7, 43, 8, 24, 52, 26, 17, 56, 43, 24, 32, 63, 20, 57, 16, 22, 52, 36, 8, 41, 56, 29, 32, 54, 7, 35, 57, 14, 48, 20, 62, 13, 39, 53, 29, 8, 45, 13, 29, 7, 61, 14, 54, 6, 63, 38, 32, 18, 43, 2, 39, 6, 47 }, + { 0, 58, 23, 35, 13, 46, 12, 39, 0, 31, 55, 24, 5, 35, 15, 61, 17, 5, 39, 25, 18, 2, 50, 33, 41, 13, 39, 23, 62, 46, 29, 12, 22, 8, 56, 25, 20, 49, 32, 62, 0, 56, 11, 46, 63, 42, 9, 16, 55, 5, 60, 15, 62, 26, 45, 21, 36, 51, 13, 57, 31, 24, 55, 6, 35, 9, 57, 5, 20, 60, 7, 51, 5, 19, 40, 25, 61, 32, 56, 12, 36, 48, 21, 2, 58, 12, 39, 28, 9, 50, 40, 12, 44, 18, 25, 49, 6, 38, 11, 62, 18, 46, 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22, 56, 31, 50, 11, 34, 54, 16, 51, 4, 49, 33, 53, 21, 28, 56, 24, 31, 9, 52, 16, 48, 24, 44, 13, 51, 20, 31, 49, 18, 6, 34, 2, 44, 14, 47, 8, 15, 43, 13, 41, 33, 52, 20, 61, 7, 51, 34, 62, 4, 20, 36, 33, 43, 8, 46, 13, 53, 17, 45, 42, 9, 31, 52, 11, 30, 56, 13, 59, 17, 44, 27, 6, 62, 11, 43, 17, 49, 38, 26, 2, 16, 27, 58, 21, 54, 18, 26, 5, 35, 61, 43, 27, 7, 39, 14, 58, 37, 55, 20, 33, 13, 40, 62, 10, 55, 5 }, + { 51, 14, 61, 29, 59, 20, 55, 31, 0, 49, 11, 60, 3, 26, 22, 56, 0, 40, 12, 43, 41, 8, 36, 0, 17, 57, 24, 2, 46, 26, 61, 18, 0, 38, 12, 59, 6, 49, 3, 57, 19, 63, 5, 33, 18, 54, 28, 56, 0, 43, 26, 46, 63, 27, 56, 22, 27, 54, 38, 28, 63, 24, 10, 45, 0, 31, 42, 21, 12, 25, 44, 49, 59, 6, 26, 50, 3, 34, 27, 59, 0, 35, 62, 16, 4, 58, 47, 0, 43, 24, 37, 2, 54, 20, 46, 31, 0, 56, 34, 5, 55, 45, 60, 37, 0, 40, 10, 38, 63, 46, 15, 20, 0, 53, 21, 62, 30, 11, 24, 27, 40, 0, 57, 26, 3, 45, 27, 35 }, +}; + +#else +#define DM_WIDTH 8 +#define DM_HEIGHT 8 +static guchar DM[8][8] = +{ + { 0, 32, 8, 40, 2, 34, 10, 42 }, + { 48, 16, 56, 24, 50, 18, 58, 26 }, + { 12, 44, 4, 36, 14, 46, 6, 38 }, + { 60, 28, 52, 20, 62, 30, 54, 22 }, + { 3, 35, 11, 43, 1, 33, 9, 41 }, + { 51, 19, 59, 27, 49, 17, 57, 25 }, + { 15, 47, 7, 39, 13, 45, 5, 37 }, + { 63, 31, 55, 23, 61, 29, 53, 21 } +}; +#endif + +static void +gdk_rgb_convert_8_d666 (GdkImage *image, + gint x0, gint y0, gint width, gint height, + guchar *buf, int rowstride, + gint x_align, gint y_align, GdkRgbCmap *cmap) +{ + int x, y; + gint bpl; + guchar *obuf, *obptr; + guchar *bptr, *bp2; + gint r, g, b; + guchar *dmp; + gint dith; + + bptr = buf; + bpl = image->bpl; + obuf = ((guchar *)image->mem) + y0 * bpl + x0; + for (y = 0; y < height; y++) + { + dmp = DM[(y_align + y) & (DM_HEIGHT - 1)]; + bp2 = bptr; + obptr = obuf; + for (x = 0; x < width; x++) + { + r = *bp2++; + g = *bp2++; + b = *bp2++; + dith = (dmp[(x_align + x) & (DM_WIDTH - 1)] << 2) | 7; + r = ((r * 5) + dith) >> 8; + g = ((g * 5) + (262 - dith)) >> 8; + b = ((b * 5) + dith) >> 8; + obptr[0] = colorcube_d[(r << 6) | (g << 3) | b]; + obptr++; + } + bptr += rowstride; + obuf += bpl; + } +} + +static void +gdk_rgb_convert_8_d (GdkImage *image, + gint x0, gint y0, gint width, gint height, + guchar *buf, int rowstride, + gint x_align, gint y_align, + GdkRgbCmap *cmap) +{ + int x, y; + gint bpl; + guchar *obuf, *obptr; + guchar *bptr, *bp2; + gint r, g, b; + guchar *dmp; + gint dith; + gint rs, gs, bs; + + bptr = buf; + bpl = image->bpl; + rs = image_info->nred_shades - 1; + gs = image_info->ngreen_shades - 1; + bs = image_info->nblue_shades - 1; + obuf = ((guchar *)image->mem) + y0 * bpl + x0; + for (y = 0; y < height; y++) + { + dmp = DM[(y_align + y) & (DM_HEIGHT - 1)]; + bp2 = bptr; + obptr = obuf; + for (x = 0; x < width; x++) + { + r = *bp2++; + g = *bp2++; + b = *bp2++; + dith = (dmp[(x_align + x) & (DM_WIDTH - 1)] << 2) | 7; + r = ((r * rs) + dith) >> 8; + g = ((g * gs) + (262 - dith)) >> 8; + b = ((b * bs) + dith) >> 8; + obptr[0] = colorcube_d[(r << 6) | (g << 3) | b]; + obptr++; + } + bptr += rowstride; + obuf += bpl; + } +} + +static void +gdk_rgb_convert_8_indexed (GdkImage *image, + gint x0, gint y0, gint width, gint height, + guchar *buf, int rowstride, + gint x_align, gint y_align, GdkRgbCmap *cmap) +{ + int x, y; + gint bpl; + guchar *obuf, *obptr; + guchar *bptr, *bp2; + guchar c; + guchar *lut; + + lut = cmap->lut; + bptr = buf; + bpl = image->bpl; + obuf = ((guchar *)image->mem) + y0 * bpl + x0; + for (y = 0; y < height; y++) + { + bp2 = bptr; + obptr = obuf; + for (x = 0; x < width; x++) + { + c = *bp2++; + obptr[0] = lut[c]; + obptr++; + } + bptr += rowstride; + obuf += bpl; + } +} + +static void +gdk_rgb_convert_gray8 (GdkImage *image, + gint x0, gint y0, gint width, gint height, + guchar *buf, int rowstride, + gint x_align, gint y_align, GdkRgbCmap *cmap) +{ + int x, y; + gint bpl; + guchar *obuf, *obptr; + guchar *bptr, *bp2; + gint r, g, b; + + bptr = buf; + bpl = image->bpl; + obuf = ((guchar *)image->mem) + y0 * bpl + x0; + for (y = 0; y < height; y++) + { + bp2 = bptr; + obptr = obuf; + for (x = 0; x < width; x++) + { + r = *bp2++; + g = *bp2++; + b = *bp2++; + obptr[0] = (g + ((b + r) >> 1)) >> 1; + obptr++; + } + bptr += rowstride; + obuf += bpl; + } +} + +static void +gdk_rgb_convert_gray8_gray (GdkImage *image, + gint x0, gint y0, gint width, gint height, + guchar *buf, int rowstride, + gint x_align, gint y_align, GdkRgbCmap *cmap) +{ + int y; + gint bpl; + guchar *obuf; + guchar *bptr; + + bptr = buf; + bpl = image->bpl; + obuf = ((guchar *)image->mem) + y0 * bpl + x0; + for (y = 0; y < height; y++) + { + memcpy (obuf, bptr, width); + bptr += rowstride; + obuf += bpl; + } +} + +#ifndef WORDS_BIGENDIAN +#define HAIRY_CONVERT_565 +#endif + +#ifdef HAIRY_CONVERT_565 +/* Render a 24-bit RGB image in buf into the GdkImage, without dithering. + This assumes native byte ordering - what should really be done is to + check whether static_image->byte_order is consistent with the _ENDIAN + config flag, and if not, use a different function. + + This one is even faster than the one below - its inner loop loads 3 + words (i.e. 4 24-bit pixels), does a lot of shifting and masking, + then writes 2 words. */ +static void +gdk_rgb_convert_565 (GdkImage *image, + gint x0, gint y0, gint width, gint height, + guchar *buf, int rowstride, + gint x_align, gint y_align, GdkRgbCmap *cmap) +{ + int x, y; + guchar *obuf, *obptr; + gint bpl; + guchar *bptr, *bp2; + guchar r, g, b; + + bptr = buf; + bpl = image->bpl; + obuf = ((guchar *)image->mem) + y0 * bpl + x0 * 2; + for (y = 0; y < height; y++) + { + bp2 = bptr; + obptr = obuf; + if (width < 8 || (((unsigned long)obuf | (unsigned long) bp2) & 3)) + { + for (x = 0; x < width; x++) + { + r = *bp2++; + g = *bp2++; + b = *bp2++; + ((guint16 *)obptr)[0] = ((r & 0xf8) << 8) | + ((g & 0xfc) << 3) | + (b >> 3); + obptr += 2; + } + } + else + { + for (x = 0; x < width - 3; x += 4) + { + guint32 r1b0g0r0; + guint32 g2r2b1g1; + guint32 b3g3r3b2; + + r1b0g0r0 = ((guint32 *)bp2)[0]; + g2r2b1g1 = ((guint32 *)bp2)[1]; + b3g3r3b2 = ((guint32 *)bp2)[2]; + ((guint32 *)obptr)[0] = + ((r1b0g0r0 & 0xf8) << 8) | + ((r1b0g0r0 & 0xfc00) >> 5) | + ((r1b0g0r0 & 0xf80000) >> 19) | + (r1b0g0r0 & 0xf8000000) | + ((g2r2b1g1 & 0xfc) << 19) | + ((g2r2b1g1 & 0xf800) << 5); + ((guint32 *)obptr)[1] = + ((g2r2b1g1 & 0xf80000) >> 8) | + ((g2r2b1g1 & 0xfc000000) >> 21) | + ((b3g3r3b2 & 0xf8) >> 3) | + ((b3g3r3b2 & 0xf800) << 16) | + ((b3g3r3b2 & 0xfc0000) << 3) | + ((b3g3r3b2 & 0xf8000000) >> 11); + bp2 += 12; + obptr += 8; + } + for (; x < width; x++) + { + r = *bp2++; + g = *bp2++; + b = *bp2++; + ((guint16 *)obptr)[0] = ((r & 0xf8) << 8) | + ((g & 0xfc) << 3) | + (b >> 3); + obptr += 2; + } + } + bptr += rowstride; + obuf += bpl; + } +} +#else +/* Render a 24-bit RGB image in buf into the GdkImage, without dithering. + This assumes native byte ordering - what should really be done is to + check whether static_image->byte_order is consistent with the _ENDIAN + config flag, and if not, use a different function. + + This routine is faster than the one included with Gtk 1.0 for a number + of reasons: + + 1. Shifting instead of lookup tables (less memory traffic). + + 2. Much less register pressure, especially because shifts are + in the code. + + 3. A memcpy is avoided (i.e. the transfer function). + + 4. On big-endian architectures, byte swapping is avoided. + + That said, it wouldn't be hard to make it even faster - just make an + inner loop that reads 3 words (i.e. 4 24-bit pixels), does a lot of + shifting and masking, then writes 2 words. +*/ +static void +gdk_rgb_convert_565 (GdkImage *image, + gint x0, gint y0, gint width, gint height, + guchar *buf, int rowstride, + gint x_align, gint y_align, GdkRgbCmap *cmap) +{ + int x, y; + guchar *obuf; + gint bpl; + guchar *bptr, *bp2; + guchar r, g, b; + + bptr = buf; + bpl = image->bpl; + obuf = ((guchar *)image->mem) + y0 * bpl + x0 * 2; + for (y = 0; y < height; y++) + { + bp2 = bptr; + for (x = 0; x < width; x++) + { + r = *bp2++; + g = *bp2++; + b = *bp2++; + ((unsigned short *)obuf)[x] = ((r & 0xf8) << 8) | + ((g & 0xfc) << 3) | + (b >> 3); + } + bptr += rowstride; + obuf += bpl; + } +} +#endif + +#ifdef HAIRY_CONVERT_565 +static void +gdk_rgb_convert_565_gray (GdkImage *image, + gint x0, gint y0, gint width, gint height, + guchar *buf, int rowstride, + gint x_align, gint y_align, GdkRgbCmap *cmap) +{ + int x, y; + guchar *obuf, *obptr; + gint bpl; + guchar *bptr, *bp2; + guchar g; + + bptr = buf; + bpl = image->bpl; + obuf = ((guchar *)image->mem) + y0 * bpl + x0 * 2; + for (y = 0; y < height; y++) + { + bp2 = bptr; + obptr = obuf; + if (width < 8 || (((unsigned long)obuf | (unsigned long) bp2) & 3)) + { + for (x = 0; x < width; x++) + { + g = *bp2++; + ((guint16 *)obptr)[0] = ((g & 0xf8) << 8) | + ((g & 0xfc) << 3) | + (g >> 3); + obptr += 2; + } + } + else + { + for (x = 0; x < width - 3; x += 4) + { + guint32 g3g2g1g0; + + g3g2g1g0 = ((guint32 *)bp2)[0]; + ((guint32 *)obptr)[0] = + ((g3g2g1g0 & 0xf8) << 8) | + ((g3g2g1g0 & 0xfc) << 3) | + ((g3g2g1g0 & 0xf8) >> 3) | + (g3g2g1g0 & 0xf800) << 16 | + ((g3g2g1g0 & 0xfc00) << 11) | + ((g3g2g1g0 & 0xf800) << 5); + ((guint32 *)obptr)[1] = + ((g3g2g1g0 & 0xf80000) >> 8) | + ((g3g2g1g0 & 0xfc0000) >> 13) | + ((g3g2g1g0 & 0xf80000) >> 19) | + (g3g2g1g0 & 0xf8000000) | + ((g3g2g1g0 & 0xfc000000) >> 5) | + ((g3g2g1g0 & 0xf8000000) >> 11); + bp2 += 4; + obptr += 8; + } + for (; x < width; x++) + { + g = *bp2++; + ((guint16 *)obptr)[0] = ((g & 0xf8) << 8) | + ((g & 0xfc) << 3) | + (g >> 3); + obptr += 2; + } + } + bptr += rowstride; + obuf += bpl; + } +} +#else +static void +gdk_rgb_convert_565_gray (GdkImage *image, + gint x0, gint y0, gint width, gint height, + guchar *buf, int rowstride, + gint x_align, gint y_align, GdkRgbCmap *cmap) +{ + int x, y; + guchar *obuf; + gint bpl; + guchar *bptr, *bp2; + guchar g; + + bptr = buf; + bpl = image->bpl; + obuf = ((guchar *)image->mem) + y0 * bpl + x0 * 2; + for (y = 0; y < height; y++) + { + bp2 = bptr; + for (x = 0; x < width; x++) + { + g = *bp2++; + ((guint16 *)obptr)[0] = ((g & 0xf8) << 8) | + ((g & 0xfc) << 3) | + (g >> 3); + } + bptr += rowstride; + obuf += bpl; + } +} +#endif + +static void +gdk_rgb_convert_565_br (GdkImage *image, + gint x0, gint y0, gint width, gint height, + guchar *buf, int rowstride, + gint x_align, gint y_align, GdkRgbCmap *cmap) +{ + int x, y; + guchar *obuf; + gint bpl; + guchar *bptr, *bp2; + guchar r, g, b; + + bptr = buf; + bpl = image->bpl; + obuf = ((guchar *)image->mem) + y0 * bpl + x0 * 2; + for (y = 0; y < height; y++) + { + bp2 = bptr; + for (x = 0; x < width; x++) + { + r = *bp2++; + g = *bp2++; + b = *bp2++; + /* final word is: + g4 g3 g2 b7 b6 b5 b4 b3 r7 r6 r5 r4 r3 g7 g6 g5 + */ + ((unsigned short *)obuf)[x] = (r & 0xf8) | + ((g & 0xe0) >> 5) | + ((g & 0x1c) << 11) | + ((b & 0xf8) << 5); + } + bptr += rowstride; + obuf += bpl; + } +} + +static void +gdk_rgb_convert_565_d (GdkImage *image, + gint x0, gint y0, gint width, gint height, + guchar *buf, int rowstride, + gint x_align, gint y_align, GdkRgbCmap *cmap) +{ + int x, y; + guchar *obuf; + gint bpl; + guchar *bptr, *bp2; + guchar r, g, b; + gint dith; + gint r1, g1, b1; + guchar *dmp; + + bptr = buf; + bpl = image->bpl; + obuf = ((guchar *)image->mem) + y0 * bpl + x0 * 2; + for (y = 0; y < height; y++) + { + dmp = DM[(y_align + y) & (DM_HEIGHT - 1)]; + bp2 = bptr; + for (x = 0; x < width; x++) + { + r = *bp2++; + g = *bp2++; + b = *bp2++; + dith = dmp[(x_align + x) & (DM_WIDTH - 1)] >> 3; + r1 = r + dith; + g1 = g + ((7 - dith) >> 1); + b1 = b + dith; + ((unsigned short *)obuf)[x] = (((r1 - (r1 >> 5)) & 0xf8) << 8) | + (((g1 - (g1 >> 6)) & 0xfc) << 3) | + (((b1 - (b1 >> 5)) & 0xf8) >> 3); + } + bptr += rowstride; + obuf += bpl; + } +} + +static void +gdk_rgb_convert_555 (GdkImage *image, + gint x0, gint y0, gint width, gint height, + guchar *buf, int rowstride, + gint x_align, gint y_align, GdkRgbCmap *cmap) +{ + int x, y; + guchar *obuf; + gint bpl; + guchar *bptr, *bp2; + guchar r, g, b; + + bptr = buf; + bpl = image->bpl; + obuf = ((guchar *)image->mem) + y0 * bpl + x0 * 2; + for (y = 0; y < height; y++) + { + bp2 = bptr; + for (x = 0; x < width; x++) + { + r = *bp2++; + g = *bp2++; + b = *bp2++; + ((unsigned short *)obuf)[x] = ((r & 0xf8) << 7) | + ((g & 0xf8) << 2) | + (b >> 3); + } + bptr += rowstride; + obuf += bpl; + } +} + +static void +gdk_rgb_convert_555_br (GdkImage *image, + gint x0, gint y0, gint width, gint height, + guchar *buf, int rowstride, + gint x_align, gint y_align, GdkRgbCmap *cmap) +{ + int x, y; + guchar *obuf; + gint bpl; + guchar *bptr, *bp2; + guchar r, g, b; + + bptr = buf; + bpl = image->bpl; + obuf = ((guchar *)image->mem) + y0 * bpl + x0 * 2; + for (y = 0; y < height; y++) + { + bp2 = bptr; + for (x = 0; x < width; x++) + { + r = *bp2++; + g = *bp2++; + b = *bp2++; + /* final word is: + g5 g4 g3 b7 b6 b5 b4 b3 0 r7 r6 r5 r4 r3 g7 g6 + */ + ((unsigned short *)obuf)[x] = ((r & 0xf8) >> 1) | + ((g & 0xc0) >> 6) | + ((g & 0x18) << 10) | + ((b & 0xf8) << 5); + } + bptr += rowstride; + obuf += bpl; + } +} + +static void +gdk_rgb_convert_888_msb (GdkImage *image, + gint x0, gint y0, gint width, gint height, + guchar *buf, int rowstride, + gint x_align, gint y_align, GdkRgbCmap *cmap) +{ + int y; + guchar *obuf; + gint bpl; + guchar *bptr; + + bptr = buf; + bpl = image->bpl; + obuf = ((guchar *)image->mem) + y0 * bpl + x0 * 3; + for (y = 0; y < height; y++) + { + memcpy (obuf, bptr, width + width + width); + bptr += rowstride; + obuf += bpl; + } +} + +/* todo: optimize this */ +#ifndef WORDS_BIGENDIAN +#define HAIRY_CONVERT_888 +#endif + +#ifdef HAIRY_CONVERT_888 +static void +gdk_rgb_convert_888_lsb (GdkImage *image, + gint x0, gint y0, gint width, gint height, + guchar *buf, int rowstride, + gint x_align, gint y_align, GdkRgbCmap *cmap) +{ + int x, y; + guchar *obuf, *obptr; + gint bpl; + guchar *bptr, *bp2; + int r, g, b; + + bptr = buf; + bpl = image->bpl; + obuf = ((guchar *)image->mem) + y0 * bpl + x0 * 3; + for (y = 0; y < height; y++) + { + bp2 = bptr; + obptr = obuf; + if (width < 8 || (((unsigned long)obuf | (unsigned long) bp2) & 3)) + { + for (x = 0; x < width; x++) + { + r = bp2[0]; + g = bp2[1]; + b = bp2[2]; + *obptr++ = b; + *obptr++ = g; + *obptr++ = r; + bp2 += 3; + } + } + else + { + for (x = 0; x < width - 3; x += 4) + { + guint32 r1b0g0r0; + guint32 g2r2b1g1; + guint32 b3g3r3b2; + + r1b0g0r0 = ((guint32 *)bp2)[0]; + g2r2b1g1 = ((guint32 *)bp2)[1]; + b3g3r3b2 = ((guint32 *)bp2)[2]; + ((guint32 *)obptr)[0] = + (r1b0g0r0 & 0xff00) | + ((r1b0g0r0 & 0xff0000) >> 16) | + (((g2r2b1g1 & 0xff00) | (r1b0g0r0 & 0xff)) << 16); + ((guint32 *)obptr)[1] = + (g2r2b1g1 & 0xff0000ff) | + ((r1b0g0r0 & 0xff000000) >> 16) | + ((b3g3r3b2 & 0xff) << 16); + ((guint32 *)obptr)[2] = + (((g2r2b1g1 & 0xff0000) | (b3g3r3b2 & 0xff000000)) >> 16) | + ((b3g3r3b2 & 0xff00) << 16) | + ((b3g3r3b2 & 0xff0000)); + bp2 += 12; + obptr += 12; + } + for (; x < width; x++) + { + r = bp2[0]; + g = bp2[1]; + b = bp2[2]; + *obptr++ = b; + *obptr++ = g; + *obptr++ = r; + bp2 += 3; + } + } + bptr += rowstride; + obuf += bpl; + } +} +#else +static void +gdk_rgb_convert_888_lsb (GdkImage *image, + gint x0, gint y0, gint width, gint height, + guchar *buf, int rowstride, + gint x_align, gint y_align, GdkRgbCmap *cmap) +{ + int x, y; + guchar *obuf; + gint bpl; + guchar *bptr, *bp2; + int r, g, b; + + bptr = buf; + bpl = image->bpl; + obuf = ((guchar *)image->mem) + y0 * bpl + x0 * 3; + for (y = 0; y < height; y++) + { + bp2 = bptr; + for (x = 0; x < width; x++) + { + r = bp2[0]; + g = bp2[1]; + b = bp2[2]; + obuf[x * 3] = b; + obuf[x * 3 + 1] = g; + obuf[x * 3 + 2] = r; + bp2 += 3; + } + bptr += rowstride; + obuf += bpl; + } +} +#endif + +/* convert 24-bit packed to 32-bit unpacked */ +/* todo: optimize this */ +static void +gdk_rgb_convert_0888 (GdkImage *image, + gint x0, gint y0, gint width, gint height, + guchar *buf, int rowstride, + gint x_align, gint y_align, GdkRgbCmap *cmap) +{ + int x, y; + guchar *obuf; + gint bpl; + guchar *bptr, *bp2; + int r, g, b; + + bptr = buf; + bpl = image->bpl; + obuf = ((guchar *)image->mem) + y0 * bpl + x0 * 4; + for (y = 0; y < height; y++) + { + bp2 = bptr; + for (x = 0; x < width; x++) + { + r = bp2[0]; + g = bp2[1]; + b = bp2[2]; + ((unsigned long *)obuf)[x] = (r << 16) | (g << 8) | b; + bp2 += 3; + } + bptr += rowstride; + obuf += bpl; + } +} + +static void +gdk_rgb_convert_0888_br (GdkImage *image, + gint x0, gint y0, gint width, gint height, + guchar *buf, int rowstride, + gint x_align, gint y_align, GdkRgbCmap *cmap) +{ + int x, y; + guchar *obuf; + gint bpl; + guchar *bptr, *bp2; + int r, g, b; + + bptr = buf; + bpl = image->bpl; + obuf = ((guchar *)image->mem) + y0 * bpl + x0 * 4; + for (y = 0; y < height; y++) + { + bp2 = bptr; + for (x = 0; x < width; x++) + { + r = bp2[0]; + g = bp2[1]; + b = bp2[2]; + ((unsigned long *)obuf)[x] = (b << 24) | (g << 16) | (r << 8); + bp2 += 3; + } + bptr += rowstride; + obuf += bpl; + } +} + +/* Generic truecolor/directcolor conversion function. Slow, but these + are oddball modes. */ +static void +gdk_rgb_convert_truecolor_lsb (GdkImage *image, + gint x0, gint y0, gint width, gint height, + guchar *buf, int rowstride, + gint x_align, gint y_align, + GdkRgbCmap *cmap) +{ + int x, y; + guchar *obuf, *obptr; + gint bpl; + guchar *bptr, *bp2; + gint r, g, b; + gint r_right, r_left; + gint g_right, g_left; + gint b_right, b_left; + gint bpp; + guint32 pixel; + gint i; + + r_right = 8 - image_info->visual->red_prec; + r_left = image_info->visual->red_shift; + g_right = 8 - image_info->visual->green_prec; + g_left = image_info->visual->green_shift; + b_right = 8 - image_info->visual->blue_prec; + b_left = image_info->visual->blue_shift; + bpp = image_info->bpp; + bptr = buf; + bpl = image->bpl; + obuf = ((guchar *)image->mem) + y0 * bpl + x0 * bpp; + for (y = 0; y < height; y++) + { + obptr = obuf; + bp2 = bptr; + for (x = 0; x < width; x++) + { + r = bp2[0]; + g = bp2[1]; + b = bp2[2]; + pixel = ((r >> r_right) << r_left) | + ((g >> g_right) << g_left) | + ((b >> b_right) << b_left); + for (i = 0; i < bpp; i++) + { + *obptr++ = pixel & 0xff; + pixel >>= 8; + } + bp2 += 3; + } + bptr += rowstride; + obuf += bpl; + } +} + +static void +gdk_rgb_convert_truecolor_lsb_d (GdkImage *image, + gint x0, gint y0, gint width, gint height, + guchar *buf, int rowstride, + gint x_align, gint y_align, + GdkRgbCmap *cmap) +{ + int x, y; + guchar *obuf, *obptr; + gint bpl; + guchar *bptr, *bp2; + gint r, g, b; + gint r_right, r_left, r_prec; + gint g_right, g_left, g_prec; + gint b_right, b_left, b_prec; + gint bpp; + guint32 pixel; + gint i; + gint dith; + gint r1, g1, b1; + guchar *dmp; + + r_right = 8 - image_info->visual->red_prec; + r_left = image_info->visual->red_shift; + r_prec = image_info->visual->red_prec; + g_right = 8 - image_info->visual->green_prec; + g_left = image_info->visual->green_shift; + g_prec = image_info->visual->green_prec; + b_right = 8 - image_info->visual->blue_prec; + b_left = image_info->visual->blue_shift; + b_prec = image_info->visual->blue_prec; + bpp = image_info->bpp; + bptr = buf; + bpl = image->bpl; + obuf = ((guchar *)image->mem) + y0 * bpl + x0 * bpp; + for (y = 0; y < height; y++) + { + dmp = DM[(y_align + y) & (DM_HEIGHT - 1)]; + obptr = obuf; + bp2 = bptr; + for (x = 0; x < width; x++) + { + r = bp2[0]; + g = bp2[1]; + b = bp2[2]; + dith = dmp[(x_align + x) & (DM_WIDTH - 1)] << 2; + r1 = r + (dith >> r_prec); + g1 = g + ((252 - dith) >> g_prec); + b1 = b + (dith >> b_prec); + pixel = (((r1 - (r1 >> r_prec)) >> r_right) << r_left) | + (((g1 - (g1 >> g_prec)) >> g_right) << g_left) | + (((b1 - (b1 >> b_prec)) >> b_right) << b_left); + for (i = 0; i < bpp; i++) + { + *obptr++ = pixel & 0xff; + pixel >>= 8; + } + bp2 += 3; + } + bptr += rowstride; + obuf += bpl; + } +} + +static void +gdk_rgb_convert_truecolor_msb (GdkImage *image, + gint x0, gint y0, gint width, gint height, + guchar *buf, int rowstride, + gint x_align, gint y_align, + GdkRgbCmap *cmap) +{ + int x, y; + guchar *obuf, *obptr; + gint bpl; + guchar *bptr, *bp2; + gint r, g, b; + gint r_right, r_left; + gint g_right, g_left; + gint b_right, b_left; + gint bpp; + guint32 pixel; + gint shift, shift_init; + + r_right = 8 - image_info->visual->red_prec; + r_left = image_info->visual->red_shift; + g_right = 8 - image_info->visual->green_prec; + g_left = image_info->visual->green_shift; + b_right = 8 - image_info->visual->blue_prec; + b_left = image_info->visual->blue_shift; + bpp = image_info->bpp; + bptr = buf; + bpl = image->bpl; + obuf = ((guchar *)image->mem) + y0 * bpl + x0 * bpp; + shift_init = (bpp - 1) << 3; + for (y = 0; y < height; y++) + { + obptr = obuf; + bp2 = bptr; + for (x = 0; x < width; x++) + { + r = bp2[0]; + g = bp2[1]; + b = bp2[2]; + pixel = ((r >> r_right) << r_left) | + ((g >> g_right) << g_left) | + ((b >> b_right) << b_left); + for (shift = shift_init; shift >= 0; shift -= 8) + { + *obptr++ = (pixel >> shift) & 0xff; + } + bp2 += 3; + } + bptr += rowstride; + obuf += bpl; + } +} + +static void +gdk_rgb_convert_truecolor_msb_d (GdkImage *image, + gint x0, gint y0, gint width, gint height, + guchar *buf, int rowstride, + gint x_align, gint y_align, + GdkRgbCmap *cmap) +{ + int x, y; + guchar *obuf, *obptr; + gint bpl; + guchar *bptr, *bp2; + gint r, g, b; + gint r_right, r_left, r_prec; + gint g_right, g_left, g_prec; + gint b_right, b_left, b_prec; + gint bpp; + guint32 pixel; + gint shift, shift_init; + gint dith; + gint r1, g1, b1; + guchar *dmp; + + r_right = 8 - image_info->visual->red_prec; + r_left = image_info->visual->red_shift; + r_prec = image_info->visual->red_prec; + g_right = 8 - image_info->visual->green_prec; + g_left = image_info->visual->green_shift; + g_prec = image_info->visual->green_prec; + b_right = 8 - image_info->visual->blue_prec; + b_left = image_info->visual->blue_shift; + b_prec = image_info->visual->blue_prec; + bpp = image_info->bpp; + bptr = buf; + bpl = image->bpl; + obuf = ((guchar *)image->mem) + y0 * bpl + x0 * bpp; + shift_init = (bpp - 1) << 3; + for (y = 0; y < height; y++) + { + dmp = DM[(y_align + y) & (DM_HEIGHT - 1)]; + obptr = obuf; + bp2 = bptr; + for (x = 0; x < width; x++) + { + r = bp2[0]; + g = bp2[1]; + b = bp2[2]; + dith = dmp[(x_align + x) & (DM_WIDTH - 1)] << 2; + r1 = r + (dith >> r_prec); + g1 = g + ((252 - dith) >> g_prec); + b1 = b + (dith >> b_prec); + pixel = (((r1 - (r1 >> r_prec)) >> r_right) << r_left) | + (((g1 - (g1 >> g_prec)) >> g_right) << g_left) | + (((b1 - (b1 >> b_prec)) >> b_right) << b_left); + for (shift = shift_init; shift >= 0; shift -= 8) + { + *obptr++ = (pixel >> shift) & 0xff; + } + bp2 += 3; + } + bptr += rowstride; + obuf += bpl; + } +} + +/* Returns a pointer to the stage buffer. */ +static guchar * +gdk_rgb_ensure_stage (void) +{ + if (image_info->stage_buf == NULL) + image_info->stage_buf = g_malloc (IMAGE_HEIGHT * STAGE_ROWSTRIDE); + return image_info->stage_buf; +} + +/* This is slow. Speed me up, please. */ +static void +gdk_rgb_32_to_stage (guchar *buf, gint rowstride, gint width, gint height) +{ + gint x, y; + guchar *pi_start, *po_start; + guchar *pi, *po; + + pi_start = buf; + po_start = gdk_rgb_ensure_stage (); + for (y = 0; y < height; y++) + { + pi = pi_start; + po = po_start; + for (x = 0; x < width; x++) + { + *po++ = *pi++; + *po++ = *pi++; + *po++ = *pi++; + pi++; + } + pi_start += rowstride; + po_start += STAGE_ROWSTRIDE; + } +} + +/* Generic 32bit RGB conversion function - convert to 24bit packed, then + go from there. */ +static void +gdk_rgb_convert_32_generic (GdkImage *image, + gint x0, gint y0, gint width, gint height, + guchar *buf, gint rowstride, + gint x_align, gint y_align, GdkRgbCmap *cmap) +{ + gdk_rgb_32_to_stage (buf, rowstride, width, height); + + (*image_info->conv) (image, x0, y0, width, height, + image_info->stage_buf, STAGE_ROWSTRIDE, + x_align, y_align, cmap); +} + +/* Generic 32bit RGB conversion function - convert to 24bit packed, then + go from there. */ +static void +gdk_rgb_convert_32_generic_d (GdkImage *image, + gint x0, gint y0, gint width, gint height, + guchar *buf, gint rowstride, + gint x_align, gint y_align, GdkRgbCmap *cmap) +{ + gdk_rgb_32_to_stage (buf, rowstride, width, height); + + (*image_info->conv_d) (image, x0, y0, width, height, + image_info->stage_buf, STAGE_ROWSTRIDE, + x_align, y_align, cmap); +} + +/* This is slow. Speed me up, please. */ +static void +gdk_rgb_gray_to_stage (guchar *buf, gint rowstride, gint width, gint height) +{ + gint x, y; + guchar *pi_start, *po_start; + guchar *pi, *po; + guchar gray; + + pi_start = buf; + po_start = gdk_rgb_ensure_stage (); + for (y = 0; y < height; y++) + { + pi = pi_start; + po = po_start; + for (x = 0; x < width; x++) + { + gray = *pi++; + *po++ = gray; + *po++ = gray; + *po++ = gray; + } + pi_start += rowstride; + po_start += STAGE_ROWSTRIDE; + } +} + +/* Generic gray conversion function - convert to 24bit packed, then go + from there. */ +static void +gdk_rgb_convert_gray_generic (GdkImage *image, + gint x0, gint y0, gint width, gint height, + guchar *buf, gint rowstride, + gint x_align, gint y_align, GdkRgbCmap *cmap) +{ + gdk_rgb_gray_to_stage (buf, rowstride, width, height); + + (*image_info->conv) (image, x0, y0, width, height, + image_info->stage_buf, STAGE_ROWSTRIDE, + x_align, y_align, cmap); +} + +static void +gdk_rgb_convert_gray_generic_d (GdkImage *image, + gint x0, gint y0, gint width, gint height, + guchar *buf, gint rowstride, + gint x_align, gint y_align, GdkRgbCmap *cmap) +{ + gdk_rgb_gray_to_stage (buf, rowstride, width, height); + + (*image_info->conv_d) (image, x0, y0, width, height, + image_info->stage_buf, STAGE_ROWSTRIDE, + x_align, y_align, cmap); +} + +/* Render grayscale using indexed method. */ +static void +gdk_rgb_convert_gray_cmap (GdkImage *image, + gint x0, gint y0, gint width, gint height, + guchar *buf, gint rowstride, + gint x_align, gint y_align, GdkRgbCmap *cmap) +{ + (*image_info->conv_indexed) (image, x0, y0, width, height, + buf, rowstride, + x_align, y_align, image_info->gray_cmap); +} + +#if 0 +static void +gdk_rgb_convert_gray_cmap_d (GdkImage *image, + gint x0, gint y0, gint width, gint height, + guchar *buf, gint rowstride, + gint x_align, gint y_align, GdkRgbCmap *cmap) +{ + (*image_info->conv_indexed_d) (image, x0, y0, width, height, + buf, rowstride, + x_align, y_align, image_info->gray_cmap); +} +#endif + +/* This is slow. Speed me up, please. */ +static void +gdk_rgb_indexed_to_stage (guchar *buf, gint rowstride, gint width, gint height, + GdkRgbCmap *cmap) +{ + gint x, y; + guchar *pi_start, *po_start; + guchar *pi, *po; + gint rgb; + + pi_start = buf; + po_start = gdk_rgb_ensure_stage (); + for (y = 0; y < height; y++) + { + pi = pi_start; + po = po_start; + for (x = 0; x < width; x++) + { + rgb = cmap->colors[*pi++]; + *po++ = rgb >> 16; + *po++ = (rgb >> 8) & 0xff; + *po++ = rgb & 0xff; + } + pi_start += rowstride; + po_start += STAGE_ROWSTRIDE; + } +} + +/* Generic gray conversion function - convert to 24bit packed, then go + from there. */ +static void +gdk_rgb_convert_indexed_generic (GdkImage *image, + gint x0, gint y0, gint width, gint height, + guchar *buf, gint rowstride, + gint x_align, gint y_align, GdkRgbCmap *cmap) +{ + gdk_rgb_indexed_to_stage (buf, rowstride, width, height, cmap); + + (*image_info->conv) (image, x0, y0, width, height, + image_info->stage_buf, STAGE_ROWSTRIDE, + x_align, y_align, cmap); +} + +static void +gdk_rgb_convert_indexed_generic_d (GdkImage *image, + gint x0, gint y0, gint width, gint height, + guchar *buf, gint rowstride, + gint x_align, gint y_align, + GdkRgbCmap *cmap) +{ + gdk_rgb_indexed_to_stage (buf, rowstride, width, height, cmap); + + (*image_info->conv_d) (image, x0, y0, width, height, + image_info->stage_buf, STAGE_ROWSTRIDE, + x_align, y_align, cmap); +} + +/* Select a conversion function based on the visual and a + representative image. */ +static void +gdk_rgb_select_conv (GdkImage *image) +{ + GdkByteOrder byte_order; + gint depth, bpp, byterev; + GdkVisualType vtype; + guint32 red_mask, green_mask, blue_mask; + GdkRgbConvFunc conv, conv_d; + GdkRgbConvFunc conv_32, conv_32_d; + GdkRgbConvFunc conv_gray, conv_gray_d; + GdkRgbConvFunc conv_indexed, conv_indexed_d; + + depth = image_info->visual->depth; + bpp = image->bpp; + + byte_order = image->byte_order; + +#ifdef WORDS_BIGENDIAN + byterev = (byte_order == GDK_LSB_FIRST); +#else + byterev = (byte_order == GDK_MSB_FIRST); +#endif + + vtype = image_info->visual->type; + if (vtype == GDK_VISUAL_DIRECT_COLOR) + vtype = GDK_VISUAL_TRUE_COLOR; + + red_mask = image_info->visual->red_mask; + green_mask = image_info->visual->green_mask; + blue_mask = image_info->visual->blue_mask; + + conv = NULL; + conv_d = NULL; + + conv_32 = gdk_rgb_convert_32_generic; + conv_32_d = gdk_rgb_convert_32_generic_d; + + conv_gray = gdk_rgb_convert_gray_generic; + conv_gray_d = gdk_rgb_convert_gray_generic_d; + + conv_indexed = gdk_rgb_convert_indexed_generic; + conv_indexed_d = gdk_rgb_convert_indexed_generic_d; + + image_info->dith_default = FALSE; + + if (bpp == 2 && depth == 16 && !byterev && + red_mask == 0xf800 && green_mask == 0x7e0 && blue_mask == 0x1f) + { + conv = gdk_rgb_convert_565; + conv_d = gdk_rgb_convert_565_d; + conv_gray = gdk_rgb_convert_565_gray; + } + else if (bpp == 2 && depth == 16 && + vtype == GDK_VISUAL_TRUE_COLOR && byterev && + red_mask == 0xf800 && green_mask == 0x7e0 && blue_mask == 0x1f) + conv = gdk_rgb_convert_565_br; + + else if (bpp == 2 && depth == 15 && + vtype == GDK_VISUAL_TRUE_COLOR && !byterev && + red_mask == 0x7c00 && green_mask == 0x3e0 && blue_mask == 0x1f) + conv = gdk_rgb_convert_555; + + else if (bpp == 2 && depth == 15 && + vtype == GDK_VISUAL_TRUE_COLOR && byterev && + red_mask == 0x7c00 && green_mask == 0x3e0 && blue_mask == 0x1f) + conv = gdk_rgb_convert_555_br; + + /* I'm not 100% sure about the 24bpp tests */ + else if (bpp == 3 && depth == 24 && + vtype == GDK_VISUAL_TRUE_COLOR && byte_order == GDK_LSB_FIRST && + red_mask == 0xff0000 && green_mask == 0xff00 && blue_mask == 0xff) + conv = gdk_rgb_convert_888_lsb; + else if (bpp == 3 && depth == 24 && + vtype == GDK_VISUAL_TRUE_COLOR && byte_order == GDK_MSB_FIRST && + red_mask == 0xff0000 && green_mask == 0xff00 && blue_mask == 0xff) + conv = gdk_rgb_convert_888_msb; + else if (bpp == 4 && depth == 24 && + vtype == GDK_VISUAL_TRUE_COLOR && !byterev && + red_mask == 0xff0000 && green_mask == 0xff00 && blue_mask == 0xff) + conv = gdk_rgb_convert_0888; + else if (bpp == 4 && depth == 24 && + vtype == GDK_VISUAL_TRUE_COLOR && byterev && + red_mask == 0xff0000 && green_mask == 0xff00 && blue_mask == 0xff) + conv = gdk_rgb_convert_0888_br; + + else if (vtype == GDK_VISUAL_TRUE_COLOR && byte_order == GDK_LSB_FIRST) + { + conv = gdk_rgb_convert_truecolor_lsb; + conv_d = gdk_rgb_convert_truecolor_lsb_d; + } + else if (vtype == GDK_VISUAL_TRUE_COLOR && byte_order == GDK_MSB_FIRST) + { + conv = gdk_rgb_convert_truecolor_msb; + conv = gdk_rgb_convert_truecolor_msb_d; + } + else if (bpp == 1 && depth == 8 && (vtype == GDK_VISUAL_PSEUDO_COLOR +#ifdef ENABLE_GRAYSCALE + || vtype == GDK_VISUAL_GRAYSCALE +#endif + )) + { + image_info->dith_default = TRUE; + conv = gdk_rgb_convert_8; + if (vtype != GDK_VISUAL_GRAYSCALE) + { + if (image_info->nred_shades == 6 && + image_info->ngreen_shades == 6 && + image_info->nblue_shades == 6) + conv_d = gdk_rgb_convert_8_d666; + else + conv_d = gdk_rgb_convert_8_d; + } + conv_indexed = gdk_rgb_convert_8_indexed; + conv_gray = gdk_rgb_convert_gray_cmap; + } + else if (bpp == 1 && depth == 8 && (vtype == GDK_VISUAL_STATIC_GRAY +#ifdef not_ENABLE_GRAYSCALE + || vtype == GDK_VISUAL_GRAYSCALE +#endif + )) + { + conv = gdk_rgb_convert_gray8; + conv_gray = gdk_rgb_convert_gray8_gray; + } + + if (conv_d == NULL) + conv_d = conv; + + image_info->conv = conv; + image_info->conv_d = conv_d; + + image_info->conv_32 = conv_32; + image_info->conv_32_d = conv_32_d; + + image_info->conv_gray = conv_gray; + image_info->conv_gray_d = conv_gray_d; + + image_info->conv_indexed = conv_indexed; + image_info->conv_indexed_d = conv_indexed_d; +} + +static gint horiz_idx; +static gint horiz_y = IMAGE_HEIGHT; +static gint vert_idx; +static gint vert_x = IMAGE_WIDTH; +static gint tile_idx; +static gint tile_x = IMAGE_WIDTH; +static gint tile_y1 = IMAGE_HEIGHT; +static gint tile_y2 = IMAGE_HEIGHT; + +#ifdef VERBOSE +static gint sincelast; +#endif + +/* Defining NO_FLUSH can cause inconsistent screen updates, but is useful + for performance evaluation. */ + +#undef NO_FLUSH + +static gint +gdk_rgb_alloc_scratch_image (void) +{ + if (static_image_idx == N_IMAGES) + { +#ifndef NO_FLUSH + gdk_flush (); +#endif +#ifdef VERBOSE + g_print ("flush, %d puts since last flush\n", sincelast); + sincelast = 0; +#endif + static_image_idx = 0; + horiz_y = IMAGE_HEIGHT; + vert_x = IMAGE_WIDTH; + tile_x = IMAGE_WIDTH; + tile_y1 = tile_y2 = IMAGE_HEIGHT; + } + return static_image_idx++; +} + +static GdkImage * +gdk_rgb_alloc_scratch (gint width, gint height, gint *x0, gint *y0) +{ + GdkImage *image; + gint idx; + + + if (width >= (IMAGE_WIDTH >> 1)) + { + if (height >= (IMAGE_HEIGHT >> 1)) + { + idx = gdk_rgb_alloc_scratch_image (); + *x0 = 0; + *y0 = 0; + } + else + { + if (height + horiz_y > IMAGE_HEIGHT) + { + horiz_idx = gdk_rgb_alloc_scratch_image (); + horiz_y = 0; + } + idx = horiz_idx; + *x0 = 0; + *y0 = horiz_y; + horiz_y += height; + } + } + else + { + if (height >= (IMAGE_HEIGHT >> 1)) + { + if (width + vert_x > IMAGE_WIDTH) + { + vert_idx = gdk_rgb_alloc_scratch_image (); + vert_x = 0; + } + idx = vert_idx; + *x0 = vert_x; + *y0 = 0; + vert_x += (width + 3) & -4; + } + else + { + if (width + tile_x > IMAGE_WIDTH) + { + tile_y1 = tile_y2; + tile_x = 0; + } + if (height + tile_y1 > IMAGE_HEIGHT) + { + tile_idx = gdk_rgb_alloc_scratch_image (); + tile_x = 0; + tile_y1 = 0; + tile_y2 = 0; + } + if (height + tile_y1 > tile_y2) + tile_y2 = height + tile_y1; + idx = tile_idx; + *x0 = tile_x; + *y0 = tile_y1; + tile_x += (width + 3) & -4; + } + } + image = static_image[idx]; +#ifdef VERBOSE + g_print ("index %d, x %d, y %d (%d x %d)\n", idx, *x0, *y0, width, height); + sincelast++; +#endif + return image; +} + +static void +gdk_draw_rgb_image_core (GdkDrawable *drawable, + GdkGC *gc, + gint x, + gint y, + gint width, + gint height, + guchar *buf, + gint pixstride, + gint rowstride, + GdkRgbConvFunc conv, + GdkRgbCmap *cmap) +{ + gint y0, x0; + gint xs0, ys0; + GdkImage *image; + gint width1, height1; + guchar *buf_ptr; + + for (y0 = 0; y0 < height; y0 += IMAGE_HEIGHT) + { + height1 = MIN (height - y0, IMAGE_HEIGHT); + for (x0 = 0; x0 < width; x0 += IMAGE_WIDTH) + { + width1 = MIN (width - x0, IMAGE_WIDTH); + buf_ptr = buf + y0 * rowstride + x0 * pixstride; + + image = gdk_rgb_alloc_scratch (width1, height1, &xs0, &ys0); + + conv (image, xs0, ys0, width1, height1, buf_ptr, rowstride, + x + x0, y + y0, cmap); + + gdk_draw_image (drawable, gc, + image, xs0, ys0, x + x0, y + y0, width1, height1); + } + } +} + + +void +gdk_draw_rgb_image (GdkDrawable *drawable, + GdkGC *gc, + gint x, + gint y, + gint width, + gint height, + GdkRgbDither dith, + guchar *rgb_buf, + gint rowstride) +{ + if (dith == GDK_RGB_DITHER_NONE || (dith == GDK_RGB_DITHER_NORMAL && + !image_info->dith_default)) + gdk_draw_rgb_image_core (drawable, gc, x, y, width, height, + rgb_buf, 3, rowstride, image_info->conv, NULL); + else + gdk_draw_rgb_image_core (drawable, gc, x, y, width, height, + rgb_buf, 3, rowstride, image_info->conv_d, NULL); +} + +void +gdk_draw_rgb_32_image (GdkDrawable *drawable, + GdkGC *gc, + gint x, + gint y, + gint width, + gint height, + GdkRgbDither dith, + guchar *buf, + gint rowstride) +{ + if (dith == GDK_RGB_DITHER_NONE || (dith == GDK_RGB_DITHER_NORMAL && + !image_info->dith_default)) + gdk_draw_rgb_image_core (drawable, gc, x, y, width, height, + buf, 4, rowstride, + image_info->conv_32, NULL); + else + gdk_draw_rgb_image_core (drawable, gc, x, y, width, height, + buf, 4, rowstride, + image_info->conv_32_d, NULL); +} + +static void +gdk_rgb_make_gray_cmap (GdkRgbInfo *info) +{ + guint32 rgb[256]; + gint i; + + for (i = 0; i < 256; i++) + rgb[i] = (i << 16) | (i << 8) | i; + info->gray_cmap = gdk_rgb_cmap_new (rgb, 256); +} + +void +gdk_draw_gray_image (GdkDrawable *drawable, + GdkGC *gc, + gint x, + gint y, + gint width, + gint height, + GdkRgbDither dith, + guchar *buf, + gint rowstride) +{ + if (image_info->bpp == 1 && + image_info->gray_cmap == NULL && + (image_info->visual->type == GDK_VISUAL_PSEUDO_COLOR || + image_info->visual->type == GDK_VISUAL_GRAYSCALE)) + gdk_rgb_make_gray_cmap (image_info); + + if (dith == GDK_RGB_DITHER_NONE || (dith == GDK_RGB_DITHER_NORMAL && + !image_info->dith_default)) + gdk_draw_rgb_image_core (drawable, gc, x, y, width, height, + buf, 1, rowstride, + image_info->conv_gray, NULL); + else + gdk_draw_rgb_image_core (drawable, gc, x, y, width, height, + buf, 1, rowstride, + image_info->conv_gray_d, NULL); +} + +GdkRgbCmap * +gdk_rgb_cmap_new (guint32 *colors, gint n_colors) +{ + GdkRgbCmap *cmap; + int i, j; + guint32 rgb; + + g_return_val_if_fail (n_colors >= 0, NULL); + g_return_val_if_fail (n_colors <= 256, NULL); + cmap = g_new (GdkRgbCmap, 1); + memcpy (cmap->colors, colors, n_colors * sizeof(guint32)); + if (image_info->bpp == 1 && + (image_info->visual->type == GDK_VISUAL_PSEUDO_COLOR || + image_info->visual->type == GDK_VISUAL_GRAYSCALE)) + for (i = 0; i < n_colors; i++) + { + rgb = colors[i]; + j = ((rgb & 0xf00000) >> 12) | + ((rgb & 0xf000) >> 8) | + ((rgb & 0xf0) >> 4); +#ifdef VERBOSE + g_print ("%d %x %x %d\n", i, j, colorcube[j]); +#endif + cmap->lut[i] = colorcube[j]; + } + return cmap; +} + +void +gdk_rgb_cmap_free (GdkRgbCmap *cmap) +{ + g_free (cmap); +} + +void +gdk_draw_indexed_image (GdkDrawable *drawable, + GdkGC *gc, + gint x, + gint y, + gint width, + gint height, + GdkRgbDither dith, + guchar *buf, + gint rowstride, + GdkRgbCmap *cmap) +{ + if (dith == GDK_RGB_DITHER_NONE || (dith == GDK_RGB_DITHER_NORMAL && + !image_info->dith_default)) + gdk_draw_rgb_image_core (drawable, gc, x, y, width, height, + buf, 1, rowstride, + image_info->conv_indexed, cmap); + else + gdk_draw_rgb_image_core (drawable, gc, x, y, width, height, + buf, 1, rowstride, + image_info->conv_indexed_d, cmap); +} + +gboolean +gdk_rgb_ditherable (void) +{ + return (image_info->conv != image_info->conv_d); +} + +GdkColormap * +gdk_rgb_get_cmap (void) +{ + return image_info->cmap; +} + +GdkVisual * +gdk_rgb_get_visual (void) +{ + return image_info->visual; +} diff --git a/gdk/gdkrgb.h b/gdk/gdkrgb.h new file mode 100644 index 000000000..4b12a3269 --- /dev/null +++ b/gdk/gdkrgb.h @@ -0,0 +1,130 @@ +/* GTK - The GIMP Toolkit + * 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. + */ +#ifndef __GDK_RGB_H__ +#define __GDK_RGB_H__ + +#ifdef __cplusplus +extern "C" { +#endif /* __cplusplus */ + +typedef struct _GdkRgbCmap GdkRgbCmap; + +struct _GdkRgbCmap { + guint32 colors[256]; + guchar lut[256]; /* for 8-bit modes */ +}; + +void +gdk_rgb_init (void); + +gulong +gdk_rgb_xpixel_from_rgb (guint32 rgb); + +void +gdk_rgb_gc_set_foreground (GdkGC *gc, guint32 rgb); + +void +gdk_rgb_gc_set_background (GdkGC *gc, guint32 rgb); + +typedef enum +{ + GDK_RGB_DITHER_NONE, + GDK_RGB_DITHER_NORMAL, + GDK_RGB_DITHER_MAX +} GdkRgbDither; + +void +gdk_draw_rgb_image (GdkDrawable *drawable, + GdkGC *gc, + gint x, + gint y, + gint width, + gint height, + GdkRgbDither dith, + guchar *rgb_buf, + gint rowstride); + +void +gdk_draw_rgb_32_image (GdkDrawable *drawable, + GdkGC *gc, + gint x, + gint y, + gint width, + gint height, + GdkRgbDither dith, + guchar *buf, + gint rowstride); + +void +gdk_draw_gray_image (GdkDrawable *drawable, + GdkGC *gc, + gint x, + gint y, + gint width, + gint height, + GdkRgbDither dith, + guchar *buf, + gint rowstride); + +GdkRgbCmap * +gdk_rgb_cmap_new (guint32 *colors, gint n_colors); + +void +gdk_rgb_cmap_free (GdkRgbCmap *cmap); + +void +gdk_draw_indexed_image (GdkDrawable *drawable, + GdkGC *gc, + gint x, + gint y, + gint width, + gint height, + GdkRgbDither dith, + guchar *buf, + gint rowstride, + GdkRgbCmap *cmap); + + +/* Below are some functions which are primarily useful for debugging + and experimentation. */ +gboolean +gdk_rgb_ditherable (void); + +void +gdk_rgb_set_verbose (gboolean verbose); + +/* experimental colormap stuff */ +void +gdk_rgb_set_install (gboolean install); + +void +gdk_rgb_set_min_colors (gint min_colors); + +GdkColormap * +gdk_rgb_get_cmap (void); + +GdkVisual * +gdk_rgb_get_visual (void); + +#ifdef __cplusplus +} +#endif /* __cplusplus */ + + +#endif /* __GDK_RGB_H__ */ diff --git a/gtk/gtkfeatures.h.in b/gtk/gtkfeatures.h.in index 67328d1b3..dccb97f61 100644 --- a/gtk/gtkfeatures.h.in +++ b/gtk/gtkfeatures.h.in @@ -51,6 +51,8 @@ extern "C" { #define GTK_HAVE_RELIEF_STYLE 1-1-0 +#define GTK_HAVE_GDK_RGB 1-1-0 + #ifdef __cplusplus } #endif /* __cplusplus */