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gimp/app/tools/gimpsourcetool.c

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/* The GIMP -- an image manipulation program
* Copyright (C) 1995 Spencer Kimball and Peter Mattis
*
* 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.
*/
#include "config.h"
#include <stdlib.h>
#include <string.h>
#include <gtk/gtk.h>
#include "libgimpwidgets/gimpwidgets.h"
#include "apptypes.h"
#include "appenv.h"
#include "cursorutil.h"
#include "draw_core.h"
#include "drawable.h"
#include "gdisplay.h"
#include "gimage_mask.h"
#include "gimpcontext.h"
#include "gimpimage.h"
#include "paint_funcs.h"
#include "patterns.h"
#include "pixel_region.h"
#include "selection.h"
#include "temp_buf.h"
#include "clone.h"
#include "paint_core.h"
#include "paint_options.h"
#include "tools.h"
#include "libgimp/gimpintl.h"
#define TARGET_HEIGHT 15
#define TARGET_WIDTH 15
/* default types */
#define CLONE_DEFAULT_TYPE IMAGE_CLONE
#define CLONE_DEFAULT_ALIGNED ALIGN_NO
/* the clone structures */
typedef enum
{
ALIGN_NO,
ALIGN_YES,
ALIGN_REGISTERED
} AlignType;
typedef struct _CloneOptions CloneOptions;
struct _CloneOptions
{
PaintOptions paint_options;
CloneType type;
CloneType type_d;
GtkWidget *type_w[2]; /* 2 radio buttons */
AlignType aligned;
AlignType aligned_d;
GtkWidget *aligned_w[3]; /* 3 radio buttons */
};
/* forward function declarations */
static gpointer clone_paint_func (PaintCore *paint_core,
GimpDrawable *drawable,
PaintState state);
static void clone_draw (Tool *tool);
static void clone_motion (PaintCore *paint_core,
GimpDrawable *drawable,
GimpDrawable *src_drawable,
PaintPressureOptions *pressure_options,
CloneType type,
gint offset_x,
gint offset_y);
static void clone_line_image (GImage *dest,
GImage *src,
GimpDrawable *d_drawable,
GimpDrawable *s_drawable,
guchar *s,
guchar *d,
gint has_alpha,
gint src_bytes,
gint dest_bytes,
gint width);
static void clone_line_pattern (GImage *dest,
GimpDrawable *drawable,
GPattern *pattern,
guchar *d,
gint x,
gint y,
gint bytes,
gint width);
/* the clone tool options */
static CloneOptions *clone_options = NULL;
/* local variables */
static gint src_x = 0; /* */
static gint src_y = 0; /* position of clone src */
static gint dest_x = 0; /* */
static gint dest_y = 0; /* position of clone src */
static gint offset_x = 0; /* */
static gint offset_y = 0; /* offset for cloning */
static gint first = TRUE;
static gint trans_tx, trans_ty; /* transformed target */
static GDisplay *the_src_gdisp = NULL; /* ID of source gdisplay */
static GimpDrawable *src_drawable_ = NULL; /* source drawable */
static GimpDrawable *non_gui_src_drawable;
static gint non_gui_offset_x;
static gint non_gui_offset_y;
static CloneType non_gui_type;
/* functions */
static void
clone_options_reset (void)
{
CloneOptions *options = clone_options;
paint_options_reset ((PaintOptions *) options);
gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (options->type_w[options->type_d]), TRUE);
gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (options->aligned_w[options->aligned_d]), TRUE);
}
static CloneOptions *
clone_options_new (void)
{
CloneOptions *options;
GtkWidget *vbox;
GtkWidget *frame;
/* the new clone tool options structure */
options = g_new (CloneOptions, 1);
paint_options_init ((PaintOptions *) options,
CLONE,
clone_options_reset);
options->type = options->type_d = CLONE_DEFAULT_TYPE;
options->aligned = options->aligned_d = CLONE_DEFAULT_ALIGNED;
/* the main vbox */
vbox = ((ToolOptions *) options)->main_vbox;
frame = gimp_radio_group_new2 (TRUE, _("Source"),
gimp_radio_button_update,
&options->type, (gpointer) options->type,
_("Image Source"), (gpointer) IMAGE_CLONE,
&options->type_w[0],
_("Pattern Source"), (gpointer) PATTERN_CLONE,
&options->type_w[1],
NULL);
gtk_box_pack_start (GTK_BOX (vbox), frame, FALSE, FALSE, 0);
gtk_widget_show (frame);
frame = gimp_radio_group_new2 (TRUE, _("Alignment"),
gimp_radio_button_update,
&options->aligned, (gpointer) options->aligned,
_("Non Aligned"), (gpointer) ALIGN_NO,
&options->aligned_w[0],
_("Aligned"), (gpointer) ALIGN_YES,
&options->aligned_w[1],
_("Registered"), (gpointer) ALIGN_REGISTERED,
&options->aligned_w[2],
NULL);
gtk_box_pack_start (GTK_BOX (vbox), frame, FALSE, FALSE, 0);
gtk_widget_show (frame);
return options;
}
static void
clone_src_drawable_destroyed_cb (GimpDrawable *drawable,
GimpDrawable **src_drawable)
{
if (drawable == *src_drawable)
{
*src_drawable = NULL;
the_src_gdisp = NULL;
}
}
static void
clone_set_src_drawable (GimpDrawable *drawable)
{
if (src_drawable_ == drawable)
return;
if (src_drawable_)
gtk_signal_disconnect_by_data (GTK_OBJECT (src_drawable_), &src_drawable_);
src_drawable_ = drawable;
if (drawable)
{
gtk_signal_connect (GTK_OBJECT (drawable), "destroy",
GTK_SIGNAL_FUNC (clone_src_drawable_destroyed_cb),
&src_drawable_);
}
}
static gpointer
clone_paint_func (PaintCore *paint_core,
GimpDrawable *drawable,
PaintState state)
{
GDisplay *gdisp;
GDisplay *src_gdisp;
gint x1, y1, x2, y2;
static gint orig_src_x, orig_src_y;
gdisp = (GDisplay *) active_tool->gdisp;
switch (state)
{
case PRETRACE_PAINT:
draw_core_pause (paint_core->core, active_tool);
break;
case MOTION_PAINT:
x1 = paint_core->curx;
y1 = paint_core->cury;
x2 = paint_core->lastx;
y2 = paint_core->lasty;
/* If the control key is down, move the src target and return */
if (paint_core->state & GDK_CONTROL_MASK)
{
src_x = x1;
src_y = y1;
first = TRUE;
}
/* otherwise, update the target */
else
{
dest_x = x1;
dest_y = y1;
if (clone_options->aligned == ALIGN_REGISTERED)
{
offset_x = 0;
offset_y = 0;
}
else if (first)
{
offset_x = src_x - dest_x;
offset_y = src_y - dest_y;
first = FALSE;
}
src_x = dest_x + offset_x;
src_y = dest_y + offset_y;
clone_motion (paint_core, drawable, src_drawable_,
clone_options->paint_options.pressure_options,
clone_options->type, offset_x, offset_y);
}
break;
case INIT_PAINT:
if (paint_core->state & GDK_CONTROL_MASK)
{
the_src_gdisp = gdisp;
clone_set_src_drawable(drawable);
src_x = paint_core->curx;
src_y = paint_core->cury;
first = TRUE;
}
else if (clone_options->aligned == ALIGN_NO)
{
first = TRUE;
orig_src_x = src_x;
orig_src_y = src_y;
}
if (clone_options->type == PATTERN_CLONE)
if (! gimp_context_get_pattern (NULL))
g_message (_("No patterns available for this operation."));
break;
case FINISH_PAINT:
draw_core_stop (paint_core->core, active_tool);
if (clone_options->aligned == ALIGN_NO && !first)
{
src_x = orig_src_x;
src_y = orig_src_y;
}
return NULL;
break;
default:
break;
}
/* Calculate the coordinates of the target */
src_gdisp = the_src_gdisp;
if (!src_gdisp)
{
the_src_gdisp = gdisp;
src_gdisp = the_src_gdisp;
}
if (state == INIT_PAINT)
/* Initialize the tool drawing core */
draw_core_start (paint_core->core,
src_gdisp->canvas->window,
active_tool);
else if (state == POSTTRACE_PAINT)
{
/* Find the target cursor's location onscreen */
gdisplay_transform_coords (src_gdisp, src_x, src_y,
&trans_tx, &trans_ty, 1);
draw_core_resume (paint_core->core, active_tool);
}
return NULL;
}
void
clone_cursor_update (Tool *tool,
GdkEventMotion *mevent,
GDisplay *gdisp)
{
Layer *layer;
GdkCursorType ctype = GDK_TOP_LEFT_ARROW;
gint x, y;
gdisplay_untransform_coords (gdisp, (double) mevent->x, (double) mevent->y,
&x, &y, TRUE, FALSE);
if ((layer = gimp_image_get_active_layer (gdisp->gimage)))
{
int off_x, off_y;
gimp_drawable_offsets (GIMP_DRAWABLE (layer), &off_x, &off_y);
if (x >= off_x && y >= off_y &&
x < (off_x + gimp_drawable_width (GIMP_DRAWABLE (layer))) &&
y < (off_y + gimp_drawable_height (GIMP_DRAWABLE (layer))))
{
/* One more test--is there a selected region?
* if so, is cursor inside?
*/
if (gimage_mask_is_empty (gdisp->gimage))
ctype = GIMP_MOUSE_CURSOR;
else if (gimage_mask_value (gdisp->gimage, x, y))
ctype = GIMP_MOUSE_CURSOR;
}
}
if (clone_options->type == IMAGE_CLONE)
{
if (mevent->state & GDK_CONTROL_MASK)
ctype = GIMP_CROSSHAIR_SMALL_CURSOR;
else if (!src_drawable_)
ctype = GIMP_BAD_CURSOR;
}
gdisplay_install_tool_cursor (gdisp, ctype,
ctype == GIMP_CROSSHAIR_SMALL_CURSOR ?
TOOL_TYPE_NONE : CLONE,
CURSOR_MODIFIER_NONE,
FALSE);
}
Tool *
tools_new_clone (void)
{
Tool * tool;
PaintCore * private;
/* The tool options */
if (! clone_options)
{
clone_options = clone_options_new ();
tools_register (CLONE, (ToolOptions *) clone_options);
/* press all default buttons */
clone_options_reset ();
}
tool = paint_core_new (CLONE);
/* the clone tool provides its own cursor_update_function
until I figure out somethinh nicer -- Sven */
tool->cursor_update_func = clone_cursor_update;
private = (PaintCore *) tool->private;
private->paint_func = clone_paint_func;
private->core->draw_func = clone_draw;
private->flags |= TOOL_TRACES_ON_WINDOW;
return tool;
}
void
tools_free_clone (Tool *tool)
{
paint_core_free (tool);
}
static void
clone_draw (Tool *tool)
{
PaintCore * paint_core;
paint_core = (PaintCore *) tool->private;
if (paint_core->core->gc != NULL && clone_options->type == IMAGE_CLONE)
{
gdk_draw_line (paint_core->core->win, paint_core->core->gc,
trans_tx - (TARGET_WIDTH >> 1), trans_ty,
trans_tx + (TARGET_WIDTH >> 1), trans_ty);
gdk_draw_line (paint_core->core->win, paint_core->core->gc,
trans_tx, trans_ty - (TARGET_HEIGHT >> 1),
trans_tx, trans_ty + (TARGET_HEIGHT >> 1));
}
}
static void
clone_motion (PaintCore *paint_core,
GimpDrawable *drawable,
GimpDrawable *src_drawable,
PaintPressureOptions *pressure_options,
CloneType type,
int offset_x,
int offset_y)
{
GImage *gimage;
GImage *src_gimage = NULL;
unsigned char * s;
unsigned char * d;
TempBuf * orig;
TempBuf * area;
void * pr;
int y;
int x1, y1, x2, y2;
int has_alpha = -1;
PixelRegion srcPR, destPR;
GPattern *pattern;
gint opacity;
gdouble scale;
pr = NULL;
pattern = NULL;
/* Make sure we still have a source if we are doing image cloning */
if (type == IMAGE_CLONE)
{
if (!src_drawable)
return;
if (! (src_gimage = gimp_drawable_gimage (src_drawable)))
return;
/* Determine whether the source image has an alpha channel */
has_alpha = gimp_drawable_has_alpha (src_drawable);
}
/* We always need a destination image */
if (! (gimage = gimp_drawable_gimage (drawable)))
return;
if (pressure_options->size)
scale = paint_core->curpressure;
else
scale = 1.0;
/* Get a region which can be used to paint to */
if (! (area = paint_core_get_paint_area (paint_core, drawable, scale)))
return;
switch (type)
{
case IMAGE_CLONE:
/* Set the paint area to transparent */
temp_buf_data_clear (area);
/* If the source gimage is different from the destination,
* then we should copy straight from the destination image
* to the canvas.
* Otherwise, we need a call to get_orig_image to make sure
* we get a copy of the unblemished (offset) image
*/
if (src_drawable != drawable)
{
x1 = CLAMP (area->x + offset_x, 0, gimp_drawable_width (src_drawable));
y1 = CLAMP (area->y + offset_y, 0, gimp_drawable_height (src_drawable));
x2 = CLAMP (area->x + offset_x + area->width,
0, gimp_drawable_width (src_drawable));
y2 = CLAMP (area->y + offset_y + area->height,
0, gimp_drawable_height (src_drawable));
if (!(x2 - x1) || !(y2 - y1))
return;
pixel_region_init (&srcPR, gimp_drawable_data (src_drawable),
x1, y1, (x2 - x1), (y2 - y1), FALSE);
}
else
{
x1 = CLAMP (area->x + offset_x, 0, gimp_drawable_width (drawable));
y1 = CLAMP (area->y + offset_y, 0, gimp_drawable_height (drawable));
x2 = CLAMP (area->x + offset_x + area->width,
0, gimp_drawable_width (drawable));
y2 = CLAMP (area->y + offset_y + area->height,
0, gimp_drawable_height (drawable));
if (!(x2 - x1) || !(y2 - y1))
return;
/* get the original image */
orig = paint_core_get_orig_image (paint_core, drawable, x1, y1, x2, y2);
srcPR.bytes = orig->bytes;
srcPR.x = 0; srcPR.y = 0;
srcPR.w = x2 - x1;
srcPR.h = y2 - y1;
srcPR.rowstride = srcPR.bytes * orig->width;
srcPR.data = temp_buf_data (orig);
}
offset_x = x1 - (area->x + offset_x);
offset_y = y1 - (area->y + offset_y);
/* configure the destination */
destPR.bytes = area->bytes;
destPR.x = 0; destPR.y = 0;
destPR.w = srcPR.w;
destPR.h = srcPR.h;
destPR.rowstride = destPR.bytes * area->width;
destPR.data = temp_buf_data (area) + offset_y * destPR.rowstride +
offset_x * destPR.bytes;
pr = pixel_regions_register (2, &srcPR, &destPR);
break;
case PATTERN_CLONE:
pattern = gimp_context_get_pattern (NULL);
if (!pattern)
return;
destPR.bytes = area->bytes;
destPR.x = 0; destPR.y = 0;
destPR.w = area->width;
destPR.h = area->height;
destPR.rowstride = destPR.bytes * area->width;
destPR.data = temp_buf_data (area);
pr = pixel_regions_register (1, &destPR);
break;
}
for (; pr != NULL; pr = pixel_regions_process (pr))
{
s = srcPR.data;
d = destPR.data;
for (y = 0; y < destPR.h; y++)
{
switch (type)
{
case IMAGE_CLONE:
clone_line_image (gimage, src_gimage, drawable, src_drawable, s, d,
has_alpha, srcPR.bytes, destPR.bytes, destPR.w);
s += srcPR.rowstride;
break;
case PATTERN_CLONE:
clone_line_pattern (gimage, drawable, pattern, d,
area->x + offset_x, area->y + y + offset_y,
destPR.bytes, destPR.w);
break;
}
d += destPR.rowstride;
}
}
opacity = 255.0 * gimp_context_get_opacity (NULL);
if (pressure_options->opacity)
opacity = opacity * 2.0 * paint_core->curpressure;
/* paste the newly painted canvas to the gimage which is being worked on */
paint_core_paste_canvas (paint_core, drawable,
MIN (opacity, 255),
(int) (gimp_context_get_opacity (NULL) * 255),
gimp_context_get_paint_mode (NULL),
pressure_options->pressure ? PRESSURE : SOFT,
scale, CONSTANT);
}
static void
clone_line_image (GImage *dest,
GImage *src,
GimpDrawable *d_drawable,
GimpDrawable *s_drawable,
unsigned char *s,
unsigned char *d,
int has_alpha,
int src_bytes,
int dest_bytes,
int width)
{
unsigned char rgb[3];
int src_alpha, dest_alpha;
src_alpha = src_bytes - 1;
dest_alpha = dest_bytes - 1;
while (width--)
{
gimp_image_get_color (src, gimp_drawable_type (s_drawable), rgb, s);
gimp_image_transform_color (dest, d_drawable, rgb, d, RGB);
if (has_alpha)
d[dest_alpha] = s[src_alpha];
else
d[dest_alpha] = OPAQUE_OPACITY;
s += src_bytes;
d += dest_bytes;
}
}
static void
clone_line_pattern (GImage *dest,
GimpDrawable *drawable,
GPattern *pattern,
unsigned char *d,
int x,
int y,
int bytes,
int width)
{
guchar *pat, *p;
gint color, alpha;
gint i;
/* Make sure x, y are positive */
while (x < 0)
x += pattern->mask->width;
while (y < 0)
y += pattern->mask->height;
/* Get a pointer to the appropriate scanline of the pattern buffer */
pat = temp_buf_data (pattern->mask) +
(y % pattern->mask->height) * pattern->mask->width * pattern->mask->bytes;
color = (pattern->mask->bytes == 3) ? RGB : GRAY;
alpha = bytes - 1;
for (i = 0; i < width; i++)
{
p = pat + ((i + x) % pattern->mask->width) * pattern->mask->bytes;
gimp_image_transform_color (dest, drawable, p, d, color);
d[alpha] = OPAQUE_OPACITY;
d += bytes;
}
}
static gpointer
clone_non_gui_paint_func (PaintCore *paint_core,
GimpDrawable *drawable,
PaintState state)
{
clone_motion (paint_core, drawable, non_gui_src_drawable,
&non_gui_pressure_options,
non_gui_type, non_gui_offset_x, non_gui_offset_y);
return NULL;
}
gboolean
clone_non_gui_default (GimpDrawable *drawable,
gint num_strokes,
gdouble *stroke_array)
{
GimpDrawable *src_drawable = NULL;
CloneType clone_type = CLONE_DEFAULT_TYPE;
gdouble local_src_x = 0.0;
gdouble local_src_y = 0.0;
CloneOptions *options = clone_options;
if (options)
{
clone_type = options->type;
src_drawable = src_drawable_;
local_src_x = src_x;
local_src_y = src_y;
}
return clone_non_gui (drawable,
src_drawable,
clone_type,
local_src_x,local_src_y,
num_strokes, stroke_array);
}
gboolean
clone_non_gui (GimpDrawable *drawable,
GimpDrawable *src_drawable,
CloneType clone_type,
gdouble src_x,
gdouble src_y,
gint num_strokes,
gdouble *stroke_array)
{
gint i;
if (paint_core_init (&non_gui_paint_core, drawable,
stroke_array[0], stroke_array[1]))
{
/* Set the paint core's paint func */
non_gui_paint_core.paint_func = clone_non_gui_paint_func;
non_gui_type = clone_type;
non_gui_src_drawable = src_drawable;
non_gui_paint_core.startx = non_gui_paint_core.lastx = stroke_array[0];
non_gui_paint_core.starty = non_gui_paint_core.lasty = stroke_array[1];
non_gui_offset_x = (int) (src_x - non_gui_paint_core.startx);
non_gui_offset_y = (int) (src_y - non_gui_paint_core.starty);
clone_non_gui_paint_func (&non_gui_paint_core, drawable, 0);
for (i = 1; i < num_strokes; i++)
{
non_gui_paint_core.curx = stroke_array[i * 2 + 0];
non_gui_paint_core.cury = stroke_array[i * 2 + 1];
paint_core_interpolate (&non_gui_paint_core, drawable);
non_gui_paint_core.lastx = non_gui_paint_core.curx;
non_gui_paint_core.lasty = non_gui_paint_core.cury;
}
/* Finish the painting */
paint_core_finish (&non_gui_paint_core, drawable, -1);
/* Cleanup */
paint_core_cleanup ();
return TRUE;
}
else
return FALSE;
}
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