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gimp/plug-ins/common/flarefx.c

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/*
* This is the FlareFX plug-in for the GIMP 0.99
* Version 1.05
*
* Copyright (C) 1997-1998 Karl-Johan Andersson (t96kja@student.tdb.uu.se)
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*
*/
/*
* Please send any comments or suggestions to me,
* Karl-Johan Andersson (t96kja@student.tdb.uu.se)
*
* TODO:
* - add "streaks" from lightsource
* - improve the user interface
* - speed it up
* - more flare types, more control (color, size, intensity...)
*
* Missing something? - please contact me!
*
* May 2000 - tim copperfield [timecop@japan.co.jp]
* preview window now draws a "mini flarefx" to show approximate
* positioning after final render.
*
* Note, the algorithm does not render into an alpha channel.
* Therefore, changed RGB* to RGB in the capabilities.
* Someone who actually knows something about graphics should
* take a look to see why this doesnt render on alpha channel :)
*
*/
#include "config.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#ifdef __GNUC__
#warning GTK_DISABLE_DEPRECATED
#endif
#undef GTK_DISABLE_DEPRECATED
#include <gtk/gtk.h>
#include <libgimp/gimp.h>
#include <libgimp/gimpui.h>
#include "libgimp/stdplugins-intl.h"
/* --- Defines --- */
#define ENTRY_WIDTH 75
#define PREVIEW_SIZE 128
#define PREVIEW_MASK (GDK_EXPOSURE_MASK | \
GDK_BUTTON_PRESS_MASK | \
GDK_BUTTON1_MOTION_MASK)
#define PREVIEW 0x1
#define CURSOR 0x2
#define ALL 0xf
#if 0
#define DEBUG1 printf
#else
#define DEBUG1 dummy_printf
static void
dummy_printf (gchar *fmt, ...) {}
#endif
/* --- Typedefs --- */
typedef struct
{
gint posx;
gint posy;
} FlareValues;
typedef struct
{
gint run;
} FlareInterface;
typedef struct RGBFLOAT
{
gfloat r;
gfloat g;
gfloat b;
} RGBfloat;
typedef struct REFLECT
{
RGBfloat ccol;
gfloat size;
gint xp;
gint yp;
gint type;
} Reflect;
typedef struct
{
GimpDrawable *drawable;
gint dwidth;
gint dheight;
gint bpp;
GtkObject *xadj;
GtkObject *yadj;
gint cursor;
gint curx, cury; /* x,y of cursor in preview */
gint oldx, oldy;
gint in_call;
} FlareCenter;
/* --- Declare local functions --- */
static void query (void);
static void run (gchar *name,
gint nparams,
GimpParam *param,
gint *nreturn_vals,
GimpParam **return_vals);
static void FlareFX (GimpDrawable *drawable,
gint preview_mode);
static void fill_preview_with_thumb (GtkWidget *preview_widget,
gint32 drawable_ID);
static GtkWidget *preview_widget (GimpDrawable *drawable);
static gint flare_dialog (GimpDrawable *drawable);
static void flare_ok_callback (GtkWidget *widget,
gpointer data);
static GtkWidget * flare_center_create (GimpDrawable *drawable);
static void flare_center_destroy (GtkWidget *widget,
gpointer data);
static void flare_center_draw (FlareCenter *center,
gint update);
static void flare_center_adjustment_update (GtkAdjustment *adjustment,
gpointer data);
static void flare_center_cursor_update (FlareCenter *center);
static gint flare_center_preview_expose (GtkWidget *widget,
GdkEvent *event);
static gint flare_center_preview_events (GtkWidget *widget,
GdkEvent *event);
static void mcolor (guchar *s, gfloat h);
static void mglow (guchar *s, gfloat h);
static void minner (guchar *s, gfloat h);
static void mouter (guchar *s, gfloat h);
static void mhalo (guchar *s, gfloat h);
static void initref (gint sx, gint sy, gint width, gint height, gint matt);
static void fixpix (guchar *data, float procent, RGBfloat colpro);
static void mrt1 (guchar *s, gint i, gint col, gint row);
static void mrt2 (guchar *s, gint i, gint col, gint row);
static void mrt3 (guchar *s, gint i, gint col, gint row);
static void mrt4 (guchar *s, gint i, gint col, gint row);
/* --- Variables --- */
GimpPlugInInfo PLUG_IN_INFO =
{
NULL, /* init_proc */
NULL, /* quit_proc */
query, /* query_proc */
run, /* run_proc */
};
static FlareValues fvals =
{
128, 128 /* posx, posy */
};
static FlareInterface fint =
{
FALSE /* run */
};
static gfloat scolor, sglow, sinner, souter; /* size */
static gfloat shalo;
static gint xs, ys;
static gint numref;
static RGBfloat color, glow, inner, outer, halo;
static Reflect ref1[19];
static guchar *preview_bits;
static GtkWidget *preview;
static gdouble preview_scale_x;
static gdouble preview_scale_y;
static gboolean show_cursor = FALSE;
/* --- Functions --- */
MAIN ()
static void
query (void)
{
static GimpParamDef args[] =
{
{ GIMP_PDB_INT32, "run_mode", "Interactive, non-interactive" },
{ GIMP_PDB_IMAGE, "image", "Input image (unused)" },
{ GIMP_PDB_DRAWABLE, "drawable", "Input drawable" },
{ GIMP_PDB_INT32, "posx", "X-position" },
{ GIMP_PDB_INT32, "posy", "Y-position" }
};
gimp_install_procedure ("plug_in_flarefx",
"Add lens flare effects",
"Adds a lens flare effects. Makes your image look like it was snapped with a cheap camera with a lot of lens :)",
"Karl-Johan Andersson", /* Author */
"Karl-Johan Andersson", /* Copyright */
"May 2000",
/* don't translate '<Image>' entry,
* it is keyword for the gtk toolkit */
N_("<Image>/Filters/Light Effects/FlareFX..."),
"RGB*",
GIMP_PLUGIN,
G_N_ELEMENTS (args), 0,
args, NULL);
}
static void
run (gchar *name,
gint nparams,
GimpParam *param,
gint *nreturn_vals,
GimpParam **return_vals)
{
static GimpParam values[1];
GimpDrawable *drawable;
GimpRunMode run_mode;
GimpPDBStatusType status = GIMP_PDB_SUCCESS;
run_mode = param[0].data.d_int32;
*nreturn_vals = 1;
*return_vals = values;
values[0].type = GIMP_PDB_STATUS;
values[0].data.d_status = status;
/* Get the specified drawable */
drawable = gimp_drawable_get (param[2].data.d_drawable);
switch (run_mode)
{
case GIMP_RUN_INTERACTIVE:
INIT_I18N_UI();
/* Possibly retrieve data */
gimp_get_data ("plug_in_flarefx", &fvals);
/* First acquire information with a dialog */
if (! flare_dialog (drawable))
{
gimp_drawable_detach (drawable);
return;
}
break;
case GIMP_RUN_NONINTERACTIVE:
INIT_I18N();
/* Make sure all the arguments are there! */
if (nparams != 5)
status = GIMP_PDB_CALLING_ERROR;
if (status == GIMP_PDB_SUCCESS)
{
fvals.posx = (gint) param[3].data.d_int32;
fvals.posy = (gint) param[4].data.d_int32;
}
break;
case GIMP_RUN_WITH_LAST_VALS:
INIT_I18N();
/* Possibly retrieve data */
gimp_get_data ("plug_in_flarefx", &fvals);
break;
default:
break;
}
if (status == GIMP_PDB_SUCCESS)
{
/* Make sure that the drawable is gray or RGB color */
if (gimp_drawable_is_rgb (drawable->drawable_id) ||
gimp_drawable_is_gray (drawable->drawable_id))
{
gimp_progress_init (_("Render Flare..."));
gimp_tile_cache_ntiles (2 * (drawable->width / gimp_tile_width () + 1));
FlareFX (drawable, 0);
if (run_mode != GIMP_RUN_NONINTERACTIVE)
gimp_displays_flush ();
/* Store data */
if (run_mode == GIMP_RUN_INTERACTIVE)
gimp_set_data ("plug_in_flarefx", &fvals, sizeof (FlareValues));
g_free(preview_bits);
}
else
{
/* gimp_message ("FlareFX: cannot operate on indexed color images"); */
status = GIMP_PDB_EXECUTION_ERROR;
}
}
values[0].data.d_status = status;
gimp_drawable_detach (drawable);
}
static gint
flare_dialog (GimpDrawable *drawable)
{
GtkWidget *dlg;
GtkWidget *main_vbox;
GtkWidget *frame;
FlareCenter *center;
gimp_ui_init ("flarefx", TRUE);
dlg = gimp_dialog_new (_("FlareFX"), "flarefx",
gimp_standard_help_func, "filters/flarefx.html",
GTK_WIN_POS_MOUSE,
FALSE, TRUE, FALSE,
GTK_STOCK_CANCEL, gtk_widget_destroy,
NULL, 1, NULL, FALSE, TRUE,
GTK_STOCK_OK, flare_ok_callback,
NULL, NULL, NULL, TRUE, FALSE,
NULL);
g_signal_connect (G_OBJECT (dlg), "destroy",
G_CALLBACK (gtk_main_quit),
NULL);
/* parameter settings */
main_vbox = gtk_vbox_new (FALSE, 2);
gtk_container_set_border_width (GTK_CONTAINER (main_vbox), 0);
gtk_box_pack_start (GTK_BOX (GTK_DIALOG (dlg)->vbox), main_vbox, TRUE, TRUE, 0);
gtk_widget_show (main_vbox);
frame = flare_center_create (drawable);
center = g_object_get_data (G_OBJECT (frame), "center");
gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_ETCHED_IN);
gtk_container_set_border_width (GTK_CONTAINER (frame), 6);
gtk_box_pack_start (GTK_BOX (main_vbox), frame, TRUE, TRUE, 0);
gtk_widget_show (frame);
gtk_widget_show (dlg);
gtk_main ();
gdk_flush ();
return fint.run;
}
/* --- Interface functions --- */
static void
flare_ok_callback (GtkWidget *widget,
gpointer data)
{
fint.run = TRUE;
gtk_widget_destroy (GTK_WIDGET (data));
}
/* --- Filter functions --- */
static void
FlareFX (GimpDrawable *drawable,
gboolean preview_mode)
{
GimpPixelRgn srcPR, destPR;
gint width, height;
gint bytes;
guchar *dest, *d;
guchar *cur_row, *s;
gint row, col, i;
gint x1, y1, x2, y2;
gint matt;
gfloat hyp;
if (preview_mode)
{
width = GTK_PREVIEW (preview)->buffer_width;
height = GTK_PREVIEW (preview)->buffer_height;
bytes = GTK_PREVIEW (preview)->bpp;
xs = (gdouble)fvals.posx * preview_scale_x;
ys = (gdouble)fvals.posy * preview_scale_y;
x1 = y1 = 0;
x2 = width;
y2 = height;
}
else
{
gimp_drawable_mask_bounds (drawable->drawable_id, &x1, &y1, &x2, &y2);
width = drawable->width;
height = drawable->height;
bytes = drawable->bpp;
xs = fvals.posx; /* set x,y of flare center */
ys = fvals.posy;
}
matt = width;
if (preview_mode)
{
cur_row = g_new (guchar, GTK_PREVIEW (preview)->rowstride);
dest = g_new (guchar, GTK_PREVIEW (preview)->rowstride);
}
else
{
/* initialize the pixel regions */
gimp_pixel_rgn_init (&srcPR, drawable, 0, 0, width, height, FALSE, FALSE);
gimp_pixel_rgn_init (&destPR, drawable, 0, 0, width, height, TRUE, TRUE);
cur_row = g_new (guchar, (x2 - x1) * bytes);
dest = g_new (guchar, (x2 - x1) * bytes);
}
scolor = (gfloat)matt * 0.0375;
sglow = (gfloat)matt * 0.078125;
sinner = (gfloat)matt * 0.1796875;
souter = (gfloat)matt * 0.3359375;
shalo = (gfloat)matt * 0.084375;
color.r = 239.0/255.0; color.g = 239.0/255.0; color.b = 239.0/255.0;
glow.r = 245.0/255.0; glow.g = 245.0/255.0; glow.b = 245.0/255.0;
inner.r = 255.0/255.0; inner.g = 38.0/255.0; inner.b = 43.0/255.0;
outer.r = 69.0/255.0; outer.g = 59.0/255.0; outer.b = 64.0/255.0;
halo.r = 80.0/255.0; halo.g = 15.0/255.0; halo.b = 4.0/255.0;
initref (xs, ys, width, height, matt);
/* Loop through the rows */
for (row = y1; row < y2; row++) /* y-coord */
{
if (preview_mode)
memcpy (cur_row,
preview_bits + GTK_PREVIEW (preview)->rowstride * row,
GTK_PREVIEW (preview)->rowstride);
else
gimp_pixel_rgn_get_row (&srcPR, cur_row, x1, row, x2-x1);
d = dest;
s = cur_row;
for (col = x1; col < x2; col++) /* x-coord */
{
hyp = hypot (col-xs, row-ys);
mcolor (s, hyp); /* make color */
mglow (s, hyp); /* make glow */
minner (s, hyp); /* make inner */
mouter (s, hyp); /* make outer */
mhalo (s, hyp); /* make halo */
for (i = 0; i < numref; i++)
{
switch (ref1[i].type)
{
case 1:
mrt1 (s, i, col, row);
break;
case 2:
mrt2 (s, i, col, row);
break;
case 3:
mrt3 (s, i, col, row);
break;
case 4:
mrt4 (s, i, col, row);
break;
}
}
s+=bytes;
}
if (preview_mode)
{
memcpy (GTK_PREVIEW (preview)->buffer + GTK_PREVIEW (preview)->rowstride * row,
cur_row,
GTK_PREVIEW (preview)->rowstride);
}
else
{
/* store the dest */
gimp_pixel_rgn_set_row (&destPR, cur_row, x1, row, (x2 - x1));
}
if ((row % 5) == 0 && !preview_mode)
gimp_progress_update ((double) row / (double) (y2 - y1));
}
if (preview_mode)
{
gtk_widget_queue_draw (preview);
}
else
{
/* update the textured region */
gimp_drawable_flush (drawable);
gimp_drawable_merge_shadow (drawable->drawable_id, TRUE);
gimp_drawable_update (drawable->drawable_id, x1, y1, (x2 - x1), (y2 - y1));
}
g_free (cur_row);
g_free (dest);
}
static void
mcolor (guchar *s,
gfloat h)
{
static gfloat procent;
procent = scolor - h;
procent/=scolor;
if (procent > 0.0)
{
procent*=procent;
fixpix (s, procent, color);
}
}
static void
mglow (guchar *s,
gfloat h)
{
static gfloat procent;
procent = sglow - h;
procent/=sglow;
if (procent > 0.0)
{
procent*=procent;
fixpix (s, procent, glow);
}
}
static void
minner (guchar *s,
gfloat h)
{
static gfloat procent;
procent = sinner - h;
procent/=sinner;
if (procent > 0.0)
{
procent*=procent;
fixpix (s, procent, inner);
}
}
static void
mouter (guchar *s,
gfloat h)
{
static gfloat procent;
procent = souter - h;
procent/=souter;
if (procent > 0.0)
fixpix (s, procent, outer);
}
static void
mhalo (guchar *s,
gfloat h)
{
static gfloat procent;
procent = h - shalo;
procent/=(shalo*0.07);
procent = fabs (procent);
if (procent < 1.0)
fixpix (s, 1.0 - procent, halo);
}
static void
fixpix (guchar *data,
float procent,
RGBfloat colpro)
{
data[0] = data[0] + (255 - data[0]) * procent * colpro.r;
data[1] = data[1] + (255 - data[1]) * procent * colpro.g;
data[2] = data[2] + (255 - data[2]) * procent * colpro.b;
}
static void
initref (gint sx,
gint sy,
gint width,
gint height,
gint matt)
{
gint xh, yh, dx, dy;
xh = width / 2; yh = height / 2;
dx = xh - sx; dy = yh - sy;
numref = 19;
ref1[0].type=1; ref1[0].size=(gfloat)matt*0.027;
ref1[0].xp=0.6699*dx+xh; ref1[0].yp=0.6699*dy+yh;
ref1[0].ccol.r=0.0; ref1[0].ccol.g=14.0/255.0; ref1[0].ccol.b=113.0/255.0;
ref1[1].type=1; ref1[1].size=(gfloat)matt*0.01;
ref1[1].xp=0.2692*dx+xh; ref1[1].yp=0.2692*dy+yh;
ref1[1].ccol.r=90.0/255.0; ref1[1].ccol.g=181.0/255.0; ref1[1].ccol.b=142.0/255.0;
ref1[2].type=1; ref1[2].size=(gfloat)matt*0.005;
ref1[2].xp=-0.0112*dx+xh; ref1[2].yp=-0.0112*dy+yh;
ref1[2].ccol.r=56.0/255.0; ref1[2].ccol.g=140.0/255.0; ref1[2].ccol.b=106.0/255.0;
ref1[3].type=2; ref1[3].size=(gfloat)matt*0.031;
ref1[3].xp=0.6490*dx+xh; ref1[3].yp=0.6490*dy+yh;
ref1[3].ccol.r=9.0/255.0; ref1[3].ccol.g=29.0/255.0; ref1[3].ccol.b=19.0/255.0;
ref1[4].type=2; ref1[4].size=(gfloat)matt*0.015;
ref1[4].xp=0.4696*dx+xh; ref1[4].yp=0.4696*dy+yh;
ref1[4].ccol.r=24.0/255.0; ref1[4].ccol.g=14.0/255.0; ref1[4].ccol.b=0.0;
ref1[5].type=2; ref1[5].size=(gfloat)matt*0.037;
ref1[5].xp=0.4087*dx+xh; ref1[5].yp=0.4087*dy+yh;
ref1[5].ccol.r=24.0/255.0; ref1[5].ccol.g=14.0/255.0; ref1[5].ccol.b=0.0;
ref1[6].type=2; ref1[6].size=(gfloat)matt*0.022;
ref1[6].xp=-0.2003*dx+xh; ref1[6].yp=-0.2003*dy+yh;
ref1[6].ccol.r=42.0/255.0; ref1[6].ccol.g=19.0/255.0; ref1[6].ccol.b=0.0;
ref1[7].type=2; ref1[7].size=(gfloat)matt*0.025;
ref1[7].xp=-0.4103*dx+xh; ref1[7].yp=-0.4103*dy+yh;
ref1[7].ccol.b=17.0/255.0; ref1[7].ccol.g=9.0/255.0; ref1[7].ccol.r=0.0;
ref1[8].type=2; ref1[8].size=(gfloat)matt*0.058;
ref1[8].xp=-0.4503*dx+xh; ref1[8].yp=-0.4503*dy+yh;
ref1[8].ccol.b=10.0/255.0; ref1[8].ccol.g=4.0/255.0; ref1[8].ccol.r=0.0;
ref1[9].type=2; ref1[9].size=(gfloat)matt*0.017;
ref1[9].xp=-0.5112*dx+xh; ref1[9].yp=-0.5112*dy+yh;
ref1[9].ccol.r=5.0/255.0; ref1[9].ccol.g=5.0/255.0; ref1[9].ccol.b=14.0/255.0;
ref1[10].type=2; ref1[10].size=(gfloat)matt*0.2;
ref1[10].xp=-1.496*dx+xh; ref1[10].yp=-1.496*dy+yh;
ref1[10].ccol.r=9.0/255.0; ref1[10].ccol.g=4.0/255.0; ref1[10].ccol.b=0.0;
ref1[11].type=2; ref1[11].size=(gfloat)matt*0.5;
ref1[11].xp=-1.496*dx+xh; ref1[11].yp=-1.496*dy+yh;
ref1[11].ccol.r=9.0/255.0; ref1[11].ccol.g=4.0/255.0; ref1[11].ccol.b=0.0;
ref1[12].type=3; ref1[12].size=(gfloat)matt*0.075;
ref1[12].xp=0.4487*dx+xh; ref1[12].yp=0.4487*dy+yh;
ref1[12].ccol.r=34.0/255.0; ref1[12].ccol.g=19.0/255.0; ref1[12].ccol.b=0.0;
ref1[13].type=3; ref1[13].size=(gfloat)matt*0.1;
ref1[13].xp=dx+xh; ref1[13].yp=dy+yh;
ref1[13].ccol.r=14.0/255.0; ref1[13].ccol.g=26.0/255.0; ref1[13].ccol.b=0.0;
ref1[14].type=3; ref1[14].size=(gfloat)matt*0.039;
ref1[14].xp=-1.301*dx+xh; ref1[14].yp=-1.301*dy+yh;
ref1[14].ccol.r=10.0/255.0; ref1[14].ccol.g=25.0/255.0; ref1[14].ccol.b=13.0/255.0;
ref1[15].type=4; ref1[15].size=(gfloat)matt*0.19;
ref1[15].xp=1.309*dx+xh; ref1[15].yp=1.309*dy+yh;
ref1[15].ccol.r=9.0/255.0; ref1[15].ccol.g=0.0; ref1[15].ccol.b=17.0/255.0;
ref1[16].type=4; ref1[16].size=(gfloat)matt*0.195;
ref1[16].xp=1.309*dx+xh; ref1[16].yp=1.309*dy+yh;
ref1[16].ccol.r=9.0/255.0; ref1[16].ccol.g=16.0/255.0; ref1[16].ccol.b=5.0/255.0;
ref1[17].type=4; ref1[17].size=(gfloat)matt*0.20;
ref1[17].xp=1.309*dx+xh; ref1[17].yp=1.309*dy+yh;
ref1[17].ccol.r=17.0/255.0; ref1[17].ccol.g=4.0/255.0; ref1[17].ccol.b=0.0;
ref1[18].type=4; ref1[18].size=(gfloat)matt*0.038;
ref1[18].xp=-1.301*dx+xh; ref1[18].yp=-1.301*dy+yh;
ref1[18].ccol.r=17.0/255.0; ref1[18].ccol.g=4.0/255.0; ref1[18].ccol.b=0.0;
}
static void
mrt1 (guchar *s,
gint i,
gint col,
gint row)
{
static gfloat procent;
procent = ref1[i].size - hypot (ref1[i].xp - col, ref1[i].yp - row);
procent/=ref1[i].size;
if (procent > 0.0)
{
procent*=procent;
fixpix (s, procent, ref1[i].ccol);
}
}
static void
mrt2 (guchar *s,
gint i,
gint col,
gint row)
{
static gfloat procent;
procent = ref1[i].size - hypot (ref1[i].xp - col, ref1[i].yp - row);
procent/=(ref1[i].size * 0.15);
if (procent > 0.0)
{
if (procent > 1.0) procent = 1.0;
fixpix (s, procent, ref1[i].ccol);
}
}
static void
mrt3 (guchar *s,
gint i,
gint col,
gint row)
{
static gfloat procent;
procent = ref1[i].size - hypot (ref1[i].xp - col, ref1[i].yp - row);
procent/=(ref1[i].size * 0.12);
if (procent > 0.0)
{
if (procent > 1.0) procent = 1.0 - (procent * 0.12);
fixpix (s, procent, ref1[i].ccol);
}
}
static void
mrt4 (guchar *s,
gint i,
gint col,
gint row)
{
static gfloat procent;
procent = hypot (ref1[i].xp - col, ref1[i].yp - row) - ref1[i].size;
procent/=(ref1[i].size*0.04);
procent = fabs (procent);
if (procent < 1.0)
fixpix(s, 1.0 - procent, ref1[i].ccol);
}
/*=================================================================
CenterFrame
A frame that contains one preview and 2 entrys, used for positioning
of the center of Flare.
This whole thing is just too ugly, but I don't want to dig into it
- tim
==================================================================*/
/*
* Create new CenterFrame, and return it (GtkFrame).
*/
static GtkWidget *
flare_center_create (GimpDrawable *drawable)
{
FlareCenter *center;
GtkWidget *frame;
GtkWidget *table;
GtkWidget *label;
GtkWidget *pframe;
GtkWidget *spinbutton;
GtkWidget *check;
center = g_new (FlareCenter, 1);
center->drawable = drawable;
center->dwidth = gimp_drawable_width(drawable->drawable_id );
center->dheight = gimp_drawable_height(drawable->drawable_id );
center->bpp = gimp_drawable_bpp(drawable->drawable_id);
if (gimp_drawable_has_alpha (drawable->drawable_id))
center->bpp--;
center->cursor = FALSE;
center->curx = 0;
center->cury = 0;
center->oldx = 0;
center->oldy = 0;
center->in_call = TRUE; /* to avoid side effects while initialization */
frame = gtk_frame_new (_("Center of FlareFX"));
gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_ETCHED_IN);
gtk_container_set_border_width (GTK_CONTAINER (frame), 6);
g_signal_connect (G_OBJECT (frame), "destroy",
G_CALLBACK (flare_center_destroy),
center);
table = gtk_table_new (3, 4, FALSE);
gtk_table_set_col_spacings (GTK_TABLE (table), 4);
gtk_table_set_row_spacings (GTK_TABLE (table), 4);
gtk_table_set_col_spacing (GTK_TABLE (table), 1, 6);
gtk_container_set_border_width (GTK_CONTAINER (table), 4);
gtk_container_add (GTK_CONTAINER (frame), table);
label = gtk_label_new_with_mnemonic (_("_X:"));
gtk_misc_set_alignment (GTK_MISC (label), 1.0, 0.5 );
gtk_table_attach (GTK_TABLE (table), label, 0, 1, 0, 1,
GTK_SHRINK | GTK_FILL, GTK_FILL, 0, 0);
gtk_widget_show (label);
spinbutton =
gimp_spin_button_new (&center->xadj,
fvals.posx, G_MININT, G_MAXINT,
1, 10, 10, 0, 0);
gtk_table_attach (GTK_TABLE (table), spinbutton, 1, 2, 0, 1,
GTK_EXPAND | GTK_FILL, GTK_FILL, 0, 0);
gtk_widget_show (spinbutton);
gtk_label_set_mnemonic_widget (GTK_LABEL (label), spinbutton);
g_object_set_data (G_OBJECT (center->xadj), "center", center);
g_signal_connect (G_OBJECT (center->xadj), "value_changed",
G_CALLBACK (flare_center_adjustment_update),
&fvals.posx);
label = gtk_label_new_with_mnemonic (_("_Y:"));
gtk_misc_set_alignment (GTK_MISC (label), 0.0, 0.5 );
gtk_table_attach (GTK_TABLE (table), label, 2, 3, 0, 1,
GTK_SHRINK | GTK_FILL, GTK_FILL, 0, 0);
gtk_widget_show (label);
spinbutton =
gimp_spin_button_new (&center->yadj,
fvals.posy, G_MININT, G_MAXINT,
1, 10, 10, 0, 0);
gtk_table_attach (GTK_TABLE (table), spinbutton, 3, 4, 0, 1,
GTK_EXPAND | GTK_FILL, GTK_FILL, 0, 0);
gtk_widget_show (spinbutton);
gtk_label_set_mnemonic_widget (GTK_LABEL (label), spinbutton);
g_object_set_data (G_OBJECT (center->yadj), "center", center);
g_signal_connect (G_OBJECT (center->yadj), "value_changed",
G_CALLBACK (flare_center_adjustment_update),
&fvals.posy);
/* frame (shadow_in) that contains preview */
pframe = gtk_frame_new (NULL);
gtk_frame_set_shadow_type (GTK_FRAME (pframe), GTK_SHADOW_IN);
gtk_table_attach (GTK_TABLE (table), pframe, 0, 4, 1, 2, 0, 0, 0, 0);
/* PREVIEW */
preview = preview_widget (drawable);
gtk_widget_set_events (GTK_WIDGET (preview), PREVIEW_MASK);
gtk_container_add (GTK_CONTAINER (pframe), preview);
gtk_widget_show (preview);
g_object_set_data (G_OBJECT (preview), "center", center);
g_signal_connect_after (G_OBJECT (preview), "expose_event",
G_CALLBACK (flare_center_preview_expose),
center);
g_signal_connect (G_OBJECT (preview), "event",
G_CALLBACK (flare_center_preview_events),
center);
gtk_widget_show (pframe);
gtk_widget_show (table);
g_object_set_data (G_OBJECT (frame), "center", center);
gtk_widget_show (frame);
/* show / hide cursor */
check = gtk_check_button_new_with_mnemonic (_("_Show Cursor"));
gtk_table_attach (GTK_TABLE (table), check, 0, 4, 2, 3,
GTK_EXPAND | GTK_FILL, GTK_FILL, 0, 0);
gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (check), show_cursor);
gtk_widget_show (check);
g_signal_connect (G_OBJECT (check), "toggled",
G_CALLBACK (gimp_toggle_button_update),
&show_cursor);
g_signal_connect_swapped (G_OBJECT (check), "toggled",
G_CALLBACK (FlareFX),
drawable);
flare_center_cursor_update (center);
center->cursor = FALSE; /* Make sure that the cursor has not been drawn */
center->in_call = FALSE; /* End of initialization */
FlareFX (drawable, TRUE);
DEBUG1 ("fvals center=%d,%d\n", fvals.posx, fvals.posy);
DEBUG1 ("center cur=%d,%d\n", center->curx, center->cury);
return frame;
}
static void
flare_center_destroy (GtkWidget *widget,
gpointer data)
{
FlareCenter *center = data;
g_free (center);
}
/*
* Initialize preview
* Draw the contents into the internal buffer of the preview widget
*/
static GtkWidget *
preview_widget (GimpDrawable *drawable)
{
GtkWidget *preview;
gint size;
preview = gtk_preview_new (GTK_PREVIEW_COLOR);
fill_preview_with_thumb (preview, drawable->drawable_id);
size = GTK_PREVIEW (preview)->rowstride * GTK_PREVIEW (preview)->buffer_height;
preview_bits = g_malloc (size);
memcpy (preview_bits, GTK_PREVIEW (preview)->buffer, size);
return preview;
}
static void
fill_preview_with_thumb (GtkWidget *widget,
gint32 drawable_ID)
{
guchar *drawable_data;
gint bpp;
gint x,y;
gint width = PREVIEW_SIZE;
gint height = PREVIEW_SIZE;
guchar *src;
gdouble r, g, b, a;
gdouble c0, c1;
guchar *p0, *p1;
guchar *even, *odd;
bpp = 0; /* Only returned */
drawable_data =
gimp_drawable_get_thumbnail_data (drawable_ID, &width, &height, &bpp);
if (width < 1 || height < 1)
return;
gtk_preview_size (GTK_PREVIEW (widget), width, height);
preview_scale_x = (gdouble)width / (gdouble)gimp_drawable_width (drawable_ID);
preview_scale_y = (gdouble)height / (gdouble)gimp_drawable_height (drawable_ID);
even = g_malloc (width * 3);
odd = g_malloc (width * 3);
src = drawable_data;
for (y = 0; y < height; y++)
{
p0 = even;
p1 = odd;
for (x = 0; x < width; x++)
{
if (bpp == 4)
{
r = ((gdouble)src[x*4+0]) / 255.0;
g = ((gdouble)src[x*4+1]) / 255.0;
b = ((gdouble)src[x*4+2]) / 255.0;
a = ((gdouble)src[x*4+3]) / 255.0;
}
else if (bpp == 3)
{
r = ((gdouble)src[x*3+0]) / 255.0;
g = ((gdouble)src[x*3+1]) / 255.0;
b = ((gdouble)src[x*3+2]) / 255.0;
a = 1.0;
}
else
{
r = ((gdouble)src[x*bpp+0]) / 255.0;
g = b = r;
if(bpp == 2)
a = ((gdouble)src[x*bpp+1]) / 255.0;
else
a = 1.0;
}
if ((x / GIMP_CHECK_SIZE_SM) & 1)
{
c0 = GIMP_CHECK_LIGHT;
c1 = GIMP_CHECK_DARK;
}
else
{
c0 = GIMP_CHECK_DARK;
c1 = GIMP_CHECK_LIGHT;
}
*p0++ = (c0 + (r - c0) * a) * 255.0;
*p0++ = (c0 + (g - c0) * a) * 255.0;
*p0++ = (c0 + (b - c0) * a) * 255.0;
*p1++ = (c1 + (r - c1) * a) * 255.0;
*p1++ = (c1 + (g - c1) * a) * 255.0;
*p1++ = (c1 + (b - c1) * a) * 255.0;
} /* for */
if ((y / GIMP_CHECK_SIZE_SM) & 1)
{
gtk_preview_draw_row (GTK_PREVIEW (widget), (guchar *)odd, 0, y, width);
}
else
{
gtk_preview_draw_row (GTK_PREVIEW (widget), (guchar *)even, 0, y, width);
}
src += width * bpp;
}
g_free (even);
g_free (odd);
g_free (drawable_data);
}
/*
* Drawing CenterFrame
* if update & PREVIEW, draw preview
* if update & CURSOR, draw cross cursor
*/
static void
flare_center_draw (FlareCenter *center,
gint update)
{
if (update & PREVIEW)
{
center->cursor = FALSE;
DEBUG1 ("draw-preview\n");
}
if (update & CURSOR)
{
DEBUG1 ("draw-cursor %d old=%d,%d cur=%d,%d\n",
center->cursor,
center->oldx, center->oldy, center->curx, center->cury);
gdk_gc_set_function (preview->style->black_gc, GDK_INVERT);
if (show_cursor)
{
if (center->cursor)
{
gdk_draw_line (preview->window,
preview->style->black_gc,
center->oldx, 1,
center->oldx,
GTK_PREVIEW (preview)->buffer_height - 1);
gdk_draw_line (preview->window,
preview->style->black_gc,
1, center->oldy,
GTK_PREVIEW (preview)->buffer_width - 1,
center->oldy);
}
gdk_draw_line (preview->window,
preview->style->black_gc,
center->curx, 1,
center->curx,
GTK_PREVIEW (preview)->buffer_height - 1);
gdk_draw_line (preview->window,
preview->style->black_gc,
1, center->cury,
GTK_PREVIEW (preview)->buffer_width - 1,
center->cury);
}
/* current position of cursor is updated */
center->oldx = center->curx;
center->oldy = center->cury;
center->cursor = TRUE;
gdk_gc_set_function (preview->style->black_gc, GDK_COPY);
}
}
/*
* CenterFrame entry callback
*/
static void
flare_center_adjustment_update (GtkAdjustment *adjustment,
gpointer data)
{
FlareCenter *center;
gimp_int_adjustment_update (adjustment, data);
center = g_object_get_data (G_OBJECT (adjustment), "center");
if (!center->in_call)
{
flare_center_cursor_update (center);
flare_center_draw (center, CURSOR);
FlareFX(center->drawable, 1);
}
}
/*
* Update the cross cursor's coordinates accoding to pvals.[xy]center
* but not redraw it
*/
static void
flare_center_cursor_update (FlareCenter *center)
{
center->curx =
fvals.posx * GTK_PREVIEW (preview)->buffer_width / center->dwidth;
center->cury =
fvals.posy * GTK_PREVIEW (preview)->buffer_height / center->dheight;
if ( center->curx < 0)
center->curx = 0;
else if (center->curx >= GTK_PREVIEW (preview)->buffer_width)
center->curx = GTK_PREVIEW (preview)->buffer_width - 1;
if (center->cury < 0)
center->cury = 0;
else if (center->cury >= GTK_PREVIEW (preview)->buffer_height)
center->cury = GTK_PREVIEW (preview)->buffer_height - 1;
}
/*
* Handle the expose event on the preview
*/
static gint
flare_center_preview_expose (GtkWidget *widget,
GdkEvent *event)
{
FlareCenter *center;
center = g_object_get_data (G_OBJECT (widget), "center");
flare_center_draw (center, ALL);
return FALSE;
}
/*
* Handle other events on the preview
*/
static gint
flare_center_preview_events (GtkWidget *widget,
GdkEvent *event)
{
FlareCenter *center;
GdkEventButton *bevent;
GdkEventMotion *mevent;
center = g_object_get_data (G_OBJECT (widget), "center");
switch (event->type)
{
case GDK_EXPOSE:
break;
case GDK_BUTTON_PRESS:
bevent = (GdkEventButton *) event;
center->curx = bevent->x;
center->cury = bevent->y;
goto mouse;
case GDK_MOTION_NOTIFY:
mevent = (GdkEventMotion *) event;
if (!mevent->state)
break;
center->curx = mevent->x;
center->cury = mevent->y;
mouse:
flare_center_draw (center, CURSOR);
center->in_call = TRUE;
gtk_adjustment_set_value (GTK_ADJUSTMENT (center->xadj),
center->curx * center->dwidth /
GTK_PREVIEW (preview)->buffer_width);
gtk_adjustment_set_value (GTK_ADJUSTMENT (center->yadj),
center->cury * center->dheight /
GTK_PREVIEW (preview)->buffer_height);
center->in_call = FALSE;
FlareFX(center->drawable, 1);
break;
default:
break;
}
return FALSE;
}
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