dnrops
/
gimp
mirror of https://github.com/GNOME/gimp.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity
gimp/plug-ins/common/gee.c

932 lines
20 KiB
C
Raw Blame History

/*
* Adam D. Moss : 1998/1999 : adam@gimp.org : adam@foxbox.org
*
* This is part of the GIMP package and is released under the GNU
* Public License.
*/
/*
* Version 1.04 : 99.03.29
*
* 1.04:
* Wigglyness and button-click fun.
*
* 1.03:
* Fix for pseudocolor displays w/gdkrgb.
*
* 1.02:
* Massive speedup if you have a very recent version of GTK 1.1.
* Removed possible div-by-0 errors, took the plugin out
* of hiding (guess we need a new easter-egg for GIMP 1.2!)
*/
#include "config.h"
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <ctype.h>
#include <time.h>
#include "glib.h"
#include "libgimp/gimp.h"
#include "gtk/gtk.h"
/* Test for GTK1.2-style gdkrgb code, else use old 'preview' code. */
#ifdef __GDK_RGB_H__
#define RAPH_IS_HOME yep
#endif
/* Declare local functions. */
static void query(void);
static void run(char *name,
int nparams,
GParam * param,
int *nreturn_vals,
GParam ** return_vals);
static void do_playback (void);
static gint window_delete_callback (GtkWidget *widget,
GdkEvent *event,
gpointer data);
static void window_close_callback (GtkWidget *widget,
gpointer data);
static gint step_callback (gpointer data);
static void toggle_feedbacktype (GtkWidget *widget,
gpointer data);
static void render_frame (void);
static void show_frame (void);
static void init_preview_misc (void);
GPlugInInfo PLUG_IN_INFO =
{
NULL, /* init_proc */
NULL, /* quit_proc */
query, /* query_proc */
run, /* run_proc */
};
static const guint width = 256;
static const guint height = 256;
#define LUTSIZE 512
#define LUTSIZEMASK ((LUTSIZE)-1)
gint wigglelut[LUTSIZE];
#define LOWAMP 2
#define HIGHAMP 11
gint wiggleamp = LOWAMP;
/* Global widgets'n'stuff */
static guchar* seed_data;
static guchar* preview_data1;
static guchar* preview_data2;
#ifdef RAPH_IS_HOME
static GtkWidget* drawing_area;
#else
static GtkPreview* preview = NULL;
#endif
static gint32 image_id;
static gint32 total_frames;
static gint32* layers;
static GDrawable* drawable;
static GImageType imagetype;
static guchar* palette;
static gint ncolours;
static gint idle_tag;
static GtkWidget* eventbox;
static gboolean feedbacktype = FALSE;
static gboolean wiggly = TRUE;
static gboolean rgb_mode;
MAIN()
static void query()
{
static GParamDef args[] =
{
{PARAM_INT32, "run_mode", "Always interactive"},
{PARAM_IMAGE, "image", "Input Image"},
{PARAM_DRAWABLE, "drawable", "Input Drawable"},
};
static GParamDef *return_vals = NULL;
static int nargs = sizeof(args) / sizeof(args[0]);
static int nreturn_vals = 0;
gimp_install_procedure("plug_in_the_egg",
"A big hello from the GIMP team!",
"",
"Adam D. Moss <adam@gimp.org>",
"Adam D. Moss <adam@gimp.org>",
"1998",
"<Image>/Filters/Toys/The Egg",
/*NULL,*/
"RGB*, INDEXED*, GRAY*",
PROC_PLUG_IN,
nargs, nreturn_vals,
args, return_vals);
}
static void run(char *name, int n_params, GParam * param, int *nreturn_vals,
GParam ** return_vals)
{
static GParam values[1];
GRunModeType run_mode;
GStatusType status = STATUS_SUCCESS;
*nreturn_vals = 1;
*return_vals = values;
SRAND_FUNC (time(0));
run_mode = param[0].data.d_int32;
/* if (run_mode == RUN_NONINTERACTIVE) {*/
if (n_params != 3)
{
status = STATUS_CALLING_ERROR;
}
/* }*/
if (status == STATUS_SUCCESS)
{
drawable = gimp_drawable_get (param[2].data.d_drawable);
image_id = param[1].data.d_image;
do_playback();
/* if (run_mode != RUN_NONINTERACTIVE)
gimp_displays_flush();*/
}
values[0].type = PARAM_STATUS;
values[0].data.d_status = status;
}
static void
build_dialog(GImageType basetype,
char* imagename)
{
gchar** argv;
gint argc;
GtkWidget* dlg;
GtkWidget* button;
GtkWidget* frame;
GtkWidget* frame2;
GtkWidget* vbox;
GtkWidget* hbox;
GtkWidget* hbox2;
#ifndef RAPH_IS_HOME
guchar* color_cube;
#endif
argc = 1;
argv = g_new (gchar *, 1);
argv[0] = g_strdup ("gee");
gtk_init (&argc, &argv);
#ifdef RAPH_IS_HOME
gdk_rgb_init ();
#endif
gtk_rc_parse (gimp_gtkrc ());
gdk_set_use_xshm (gimp_use_xshm ());
#ifdef RAPH_IS_HOME
gtk_widget_set_default_visual (gdk_rgb_get_visual());
gtk_widget_set_default_colormap (gdk_rgb_get_cmap());
#else
gtk_preview_set_gamma (gimp_gamma ());
gtk_preview_set_install_cmap (gimp_install_cmap ());
color_cube = gimp_color_cube ();
gtk_preview_set_color_cube (color_cube[0], color_cube[1],
color_cube[2], color_cube[3]);
gtk_widget_set_default_visual (gtk_preview_get_visual ());
gtk_widget_set_default_colormap (gtk_preview_get_cmap ());
#endif
dlg = gtk_dialog_new ();
gtk_window_set_title (GTK_WINDOW (dlg), "GEE! The GIMP E'er Egg!");
gtk_window_position (GTK_WINDOW (dlg), GTK_WIN_POS_MOUSE);
gtk_signal_connect (GTK_OBJECT (dlg), "delete_event",
(GtkSignalFunc) window_delete_callback,
NULL);
/* Action area - 'close' button only. */
button = gtk_button_new_with_label ("** Thank you for choosing GIMP **");
GTK_WIDGET_SET_FLAGS (button, GTK_CAN_DEFAULT);
gtk_signal_connect_object (GTK_OBJECT (button), "clicked",
(GtkSignalFunc) window_close_callback,
GTK_OBJECT (dlg));
gtk_box_pack_start (GTK_BOX (GTK_DIALOG (dlg)->action_area),
button, TRUE, TRUE, 0);
gtk_widget_grab_default (button);
gtk_widget_show (button);
{
/* The 'playback' half of the dialog */
frame = gtk_frame_new (NULL);
gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_ETCHED_IN);
gtk_container_border_width (GTK_CONTAINER (frame), 3);
gtk_box_pack_start (GTK_BOX (GTK_DIALOG (dlg)->vbox),
frame, TRUE, TRUE, 0);
{
hbox = gtk_hbox_new (FALSE, 5);
gtk_container_border_width (GTK_CONTAINER (hbox), 3);
gtk_container_add (GTK_CONTAINER (frame), hbox);
{
vbox = gtk_vbox_new (FALSE, 5);
gtk_container_border_width (GTK_CONTAINER (vbox), 3);
gtk_container_add (GTK_CONTAINER (hbox), vbox);
{
hbox2 = gtk_hbox_new (TRUE, 0);
gtk_container_border_width (GTK_CONTAINER (hbox2), 0);
gtk_box_pack_start (GTK_BOX (vbox), hbox2, FALSE, FALSE, 0);
{
frame2 = gtk_frame_new (NULL);
gtk_frame_set_shadow_type (GTK_FRAME (frame2), GTK_SHADOW_ETCHED_IN);
gtk_box_pack_start (GTK_BOX (hbox2), frame2, FALSE, FALSE, 0);
{
eventbox = gtk_event_box_new();
gtk_container_add (GTK_CONTAINER (frame2), GTK_WIDGET (eventbox));
{
#ifdef RAPH_IS_HOME
drawing_area = gtk_drawing_area_new ();
gtk_widget_set_usize (drawing_area, width, height);
gtk_container_add (GTK_CONTAINER (eventbox),
GTK_WIDGET (drawing_area));
gtk_widget_show (drawing_area);
#else
preview =
GTK_PREVIEW (gtk_preview_new (rgb_mode?
GTK_PREVIEW_COLOR:
GTK_PREVIEW_GRAYSCALE));
gtk_preview_size (preview, width, height);
gtk_container_add (GTK_CONTAINER (eventbox),
GTK_WIDGET (preview));
gtk_widget_show(GTK_WIDGET (preview));
#endif /* RAPH_IS_HOME */
}
gtk_widget_show(eventbox);
gtk_widget_set_events (eventbox,
gtk_widget_get_events (eventbox)
| GDK_BUTTON_RELEASE_MASK);
}
gtk_widget_show(frame2);
}
gtk_widget_show(hbox2);
}
gtk_widget_show(vbox);
}
gtk_widget_show(hbox);
}
gtk_widget_show(frame);
}
gtk_widget_show(dlg);
idle_tag = gtk_idle_add_priority (
GTK_PRIORITY_LOW,
(GtkFunction) step_callback,
NULL);
gtk_signal_connect (GTK_OBJECT (eventbox), "button_release_event",
GTK_SIGNAL_FUNC (toggle_feedbacktype), NULL);
}
static void init_lut(void)
{
int i;
for (i=0; i<LUTSIZE; i++)
{
wigglelut[i] = RINT((double)(wiggleamp<<11))*(sin((double)(i) /
((double)LUTSIZEMASK /
31.4159265358979323)));
}
}
static void do_playback(void)
{
layers = gimp_image_get_layers (image_id, &total_frames);
imagetype = gimp_image_base_type(image_id);
if (imagetype == INDEXED)
palette = gimp_image_get_cmap(image_id, &ncolours);
/* cache hint */
gimp_tile_cache_ntiles (1);
init_preview_misc();
build_dialog(gimp_image_base_type(image_id),
gimp_image_get_filename(image_id));
init_lut();
render_frame();
show_frame();
gtk_main ();
gdk_flush ();
}
/* Rendering Functions */
/* Adam's silly algorithm. */
void domap1(unsigned char *src, unsigned char *dest,
int bx, int by, int cx, int cy)
{
unsigned int dy;
signed int bycxmcybx;
signed int bx2,by2;
signed int cx2,cy2;
unsigned int basesx;
unsigned int basesy;
static unsigned int grrr=0;
grrr++;
if ((cx+bx) == 0)
cx++;
if ((cy+by) == 0)
by++;
bycxmcybx = (by*cx-cy*bx);
if (bycxmcybx == 0)
bycxmcybx = 1;
/* A little sub-pixel jitter to liven things up. */
basesx = (((RAND_FUNC ()%89)<<19)/bycxmcybx) + ((-128-((128*256)/(cx+bx)))<<11);
basesy = (((RAND_FUNC ()%89)<<19)/bycxmcybx) + ((-128-((128*256)/(cy+by)))<<11);
bx2 = ((bx)<<19)/bycxmcybx;
cx2 = ((cx)<<19)/bycxmcybx;
by2 = ((by)<<19)/bycxmcybx;
cy2 = ((cy)<<19)/bycxmcybx;
for (dy=0;dy<256;dy++)
{
unsigned int sx;
unsigned int sy;
unsigned int dx;
sy = (basesy+=cx2);
sx = (basesx-=bx2);
if (wiggly)
{
sx += wigglelut[(((basesy)>>11)+grrr) & LUTSIZEMASK];
sy += wigglelut[(((basesx)>>11)+(grrr/3)) & LUTSIZEMASK];
}
dx = 256;
do
{
*dest++ = (*(src +
(
(
((255&(
(sx>>11)
)))
|
((((255&(
(sy>>11)
))<<8)))
)
)));
;
sx += by2;
sy -= cy2;
}
while (--dx);
}
}
/* 3bypp variant */
void domap3(unsigned char *src, unsigned char *dest,
int bx, int by, int cx, int cy)
{
unsigned int dy;
signed int bycxmcybx;
signed int bx2,by2;
signed int cx2,cy2;
unsigned int basesx;
unsigned int basesy;
static unsigned int grrr=0;
grrr++;
if ((cx+bx) == 0)
cx++;
if ((cy+by) == 0)
by++;
bycxmcybx = (by*cx-cy*bx);
if (bycxmcybx == 0)
bycxmcybx = 1;
/* A little sub-pixel jitter to liven things up. */
basesx = (((RAND_FUNC ()%89)<<19)/bycxmcybx) + ((-128-((128*256)/(cx+bx)))<<11);
basesy = (((RAND_FUNC ()%89)<<19)/bycxmcybx) + ((-128-((128*256)/(cy+by)))<<11);
bx2 = ((bx)<<19)/bycxmcybx;
cx2 = ((cx)<<19)/bycxmcybx;
by2 = ((by)<<19)/bycxmcybx;
cy2 = ((cy)<<19)/bycxmcybx;
for (dy=0;dy<256;dy++)
{
unsigned int sx;
unsigned int sy;
unsigned int dx;
sy = (basesy+=cx2);
sx = (basesx-=bx2);
if (wiggly)
{
sx += wigglelut[(((basesy)>>11)+grrr) & LUTSIZEMASK];
sy += wigglelut[(((basesx)>>11)+(grrr/3)) & LUTSIZEMASK];
}
dx = 256;
do
{
unsigned char* addr;
addr = src + 3*
(
(
((255&(
(sx>>11)
)))
|
((((255&(
(sy>>11)
))<<8)))
)
);
*dest++ = *(addr);
*dest++ = *(addr+1);
*dest++ = *(addr+2);
sx += by2;
sy -= cy2;
}
while (--dx);
}
}
static void
render_frame(void)
{
int i;
static int frame = 0;
unsigned char* tmp;
static gint xp=128, yp=128;
gint rxp, ryp;
GdkModifierType mask;
gint pixels;
pixels = width*height*(rgb_mode?3:1);
#ifdef RAPH_IS_HOME
#else
gdk_flush();
#endif
tmp = preview_data2;
preview_data2 = preview_data1;
preview_data1 = tmp;
if (frame==0)
{
for (i=0;i<pixels;i++)
{
preview_data2[i] =
preview_data1[i] =
seed_data[i];
}
}
gdk_window_get_pointer (eventbox->window, &rxp, &ryp, &mask);
if ((abs(rxp)>60)||(abs(ryp)>60))
{
xp = rxp;
yp = ryp;
}
if (rgb_mode)
{
domap3(preview_data2, preview_data1,
-(yp-xp)/2, xp+yp
,
xp+yp, (yp-xp)/2
);
#ifdef RAPH_IS_HOME
gdk_draw_rgb_image (drawing_area->window,
drawing_area->style->white_gc,
0, 0, width, height,
GDK_RGB_DITHER_NORMAL,
preview_data1, width * 3);
#else
for (i=0;i<height;i++)
{
gtk_preview_draw_row (preview,
&preview_data1[i*width*3],
0, i, width);
}
#endif
/* memcpy(preview_data1, seed_data, 256*256*3); */
if (frame != 0)
{
if (feedbacktype)
{
for (i=0;i<pixels;i++)
{
gint t;
t = preview_data1[i] + seed_data[i] - 128;
preview_data1[i] = /*CLAMP(t,0,255);*/
(t&256)? (~(t>>10)) : t; /* Quick specialized clamp */
}
}
else/* if (0) */
{
gint pixwords = pixels/sizeof(gint32);
gint32* seedwords = (gint32*) seed_data;
gint32* prevwords = (gint32*) preview_data1;
for (i=0;i<pixwords;i++)
{
/*preview_data1[i] = (preview_data1[i]*2 +
seed_data[i]) /3;*/
/* mod'd version of the below for a 'deeper' mix */
prevwords[i] =
((prevwords[i] >> 1) & 0x7f7f7f7f) +
((prevwords[i] >> 2) & 0x3f3f3f3f) +
((seedwords[i] >> 2) & 0x3f3f3f3f);
/* This is from Raph L... it should be a fast 50%/50%
blend, though I don't know if 50%/50% is as nice as
the old ratio. */
/*
prevwords[i] =
((prevwords[i] >> 1) & 0x7f7f7f7f) +
((seedwords[i] >> 1) & 0x7f7f7f7f) +
(prevwords[i] & seedwords[i] & 0x01010101); */
}
}
}
}
else /* GRAYSCALE */
{
domap1(preview_data2, preview_data1,
-(yp-xp)/2, xp+yp
,
xp+yp, (yp-xp)/2
);
#ifdef RAPH_IS_HOME
gdk_draw_gray_image (drawing_area->window,
drawing_area->style->white_gc,
0, 0, width, height,
GDK_RGB_DITHER_NORMAL,
preview_data1, width);
#else
for (i=0;i<height;i++)
{
gtk_preview_draw_row (preview,
&preview_data1[i*width],
0, i, width);
}
#endif
if (frame != 0)
{
if (feedbacktype)
{
for (i=0;i<pixels;i++)
{
int t;
t = preview_data1[i] + seed_data[i] - 128;
preview_data1[i] = /*CLAMP(t,0,255);*/
(t&256)? (~(t>>10)) : t; /* Quick specialized clamp */
}
}
else
{
gint pixwords = pixels/sizeof(gint32);
gint32* seedwords = (gint32*) seed_data;
gint32* prevwords = (gint32*) preview_data1;
for (i=0;i<pixwords;i++)
{
/* mod'd version of the below for a 'deeper' mix */
prevwords[i] =
((prevwords[i] >> 1) & 0x7f7f7f7f) +
((prevwords[i] >> 2) & 0x3f3f3f3f) +
((seedwords[i] >> 2) & 0x3f3f3f3f);
/* This is from Raph L... it should be a fast 50%/50%
blend, though I don't know if 50%/50% is as nice as
the old ratio. */
/*
prevwords[i] =
((prevwords[i] >> 1) & 0x7f7f7f7f) +
((seedwords[i] >> 1) & 0x7f7f7f7f) +
(prevwords[i] & seedwords[i] & 0x01010101); */
}
}
}
}
frame++;
}
static void
show_frame(void)
{
#ifdef RAPH_IS_HOME
#else
/* Tell GTK to physically draw the preview */
gtk_widget_draw (GTK_WIDGET (preview), NULL);
#endif /* RAPH_IS_HOME */
}
static void
init_preview_misc(void)
{
GPixelRgn pixel_rgn;
int i;
gboolean has_alpha;
if ((imagetype == RGB)||(imagetype == INDEXED))
rgb_mode = TRUE;
else
rgb_mode = FALSE;
has_alpha = gimp_drawable_has_alpha(drawable->id);
seed_data = g_malloc(width*height*4);
preview_data1 = g_malloc(width*height*(rgb_mode?3:1));
preview_data2 = g_malloc(width*height*(rgb_mode?3:1));
if ((drawable->width<256) || (drawable->height<256))
{
for (i=0;i<256;i++)
{
if (i < drawable->height)
{
gimp_pixel_rgn_init (&pixel_rgn,
drawable,
drawable->width>256?
(drawable->width/2-128):0,
(drawable->height>256?
(drawable->height/2-128):0)+i,
MIN(256,drawable->width),
1,
FALSE,
FALSE);
gimp_pixel_rgn_get_rect (&pixel_rgn,
&seed_data[(256*i +
(
(
drawable->width<256 ?
(256-drawable->width)/2 :
0
)
+
(
drawable->height<256 ?
(256-drawable->height)/2 :
0
) * 256
)) *
gimp_drawable_bpp
(drawable->id)
],
drawable->width>256?
(drawable->width/2-128):0,
(drawable->height>256?
(drawable->height/2-128):0)+i,
MIN(256,drawable->width),
1);
}
}
}
else
{
gimp_pixel_rgn_init (&pixel_rgn,
drawable,
drawable->width>256?(drawable->width/2-128):0,
drawable->height>256?(drawable->height/2-128):0,
MIN(256,drawable->width),
MIN(256,drawable->height),
FALSE,
FALSE);
gimp_pixel_rgn_get_rect (&pixel_rgn,
seed_data,
drawable->width>256?(drawable->width/2-128):0,
drawable->height>256?(drawable->height/2-128):0,
MIN(256,drawable->width),
MIN(256,drawable->height));
}
gimp_drawable_detach(drawable);
/* convert the image data of varying types into flat grey or rgb. */
switch (imagetype)
{
case INDEXED:
if (has_alpha)
{
for (i=width*height;i>0;i--)
{
seed_data[3*(i-1)+2] =
((palette[3*(seed_data[(i-1)*2])+2]*seed_data[(i-1)*2+1])/255)
+ ((255-seed_data[(i-1)*2+1])*(RAND_FUNC ()%256))/255;
seed_data[3*(i-1)+1] =
((palette[3*(seed_data[(i-1)*2])+1]*seed_data[(i-1)*2+1])/255)
+ ((255-seed_data[(i-1)*2+1])*(RAND_FUNC ()%256))/255;
seed_data[3*(i-1)+0] =
((palette[3*(seed_data[(i-1)*2])+0]*seed_data[(i-1)*2+1])/255)
+ ((255-seed_data[(i-1)*2+1])*(RAND_FUNC ()%256))/255;
}
}
else
{
for (i=width*height;i>0;i--)
{
seed_data[3*(i-1)+2] = palette[3*(seed_data[i-1])+2];
seed_data[3*(i-1)+1] = palette[3*(seed_data[i-1])+1];
seed_data[3*(i-1)+0] = palette[3*(seed_data[i-1])+0];
}
}
break;
case GRAY:
if (has_alpha)
{
for (i=0;i<width*height;i++)
{
seed_data[i] =
(seed_data[i*2]*seed_data[i*2+1])/255
+ ((255-seed_data[i*2+1])*(RAND_FUNC ()%256))/255;
}
}
break;
case RGB:
if (has_alpha)
{
for (i=0;i<width*height;i++)
{
seed_data[i*3+2] =
(seed_data[i*4+2]*seed_data[i*4+3])/255
+ ((255-seed_data[i*4+3])*(RAND_FUNC ()%256))/255;
seed_data[i*3+1] =
(seed_data[i*4+1]*seed_data[i*4+3])/255
+ ((255-seed_data[i*4+3])*(RAND_FUNC ()%256))/255;
seed_data[i*3+0] =
(seed_data[i*4+0]*seed_data[i*4+3])/255
+ ((255-seed_data[i*4+3])*(RAND_FUNC ()%256))/255;
}
}
break;
default:
break;
}
}
/* Util. */
static int
do_step(void)
{
render_frame();
return(1);
}
/* Callbacks */
static gint
window_delete_callback (GtkWidget *widget,
GdkEvent *event,
gpointer data)
{
gtk_idle_remove (idle_tag);
gdk_flush();
gtk_main_quit();
return FALSE;
}
static void
window_close_callback (GtkWidget *widget,
gpointer data)
{
if (data)
gtk_widget_destroy(GTK_WIDGET(data));
window_delete_callback (NULL, NULL, NULL);
}
static void
toggle_feedbacktype (GtkWidget *widget,
gpointer event)
{
GdkEventButton *bevent = (GdkEventButton *) event;
if (bevent->state & (GDK_SHIFT_MASK | GDK_CONTROL_MASK | GDK_MOD1_MASK))
{
wiggleamp = bevent->x/5;
wiggly = TRUE;
init_lut();
return;
}
if (bevent->state & GDK_BUTTON1_MASK)
feedbacktype = !feedbacktype;
if (bevent->state & GDK_BUTTON2_MASK)
wiggly = !wiggly;
if (bevent->state & GDK_BUTTON3_MASK)
{
if (wiggleamp == LOWAMP)
wiggleamp = HIGHAMP;
else
wiggleamp = LOWAMP;
wiggly = TRUE;
init_lut();
}
}
static gint
step_callback (gpointer data)
{
do_step();
show_frame();
return TRUE;
}
Reference in New Issue View Git Blame Copy Permalink