mirror of https://github.com/GNOME/gimp.git
270 lines
6.7 KiB
C
270 lines
6.7 KiB
C
/* 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 <gtk/gtk.h>
|
|
|
|
#include "libgimpcolor/gimpcolor.h"
|
|
|
|
#include "apptypes.h"
|
|
|
|
#include "drawable.h"
|
|
#include "gdisplay.h"
|
|
#include "gimpbrush.h"
|
|
#include "gimpcontext.h"
|
|
#include "gimpgradient.h"
|
|
#include "gimpimage.h"
|
|
#include "paint_funcs.h"
|
|
#include "selection.h"
|
|
#include "temp_buf.h"
|
|
|
|
#include "paint_core.h"
|
|
#include "paint_options.h"
|
|
#include "paintbrush.h"
|
|
#include "pencil.h"
|
|
#include "tool_options.h"
|
|
#include "tools.h"
|
|
|
|
|
|
#define PENCIL_INCREMENTAL_DEFAULT FALSE
|
|
|
|
/* the pencil tool options */
|
|
typedef struct _PencilOptions PencilOptions;
|
|
|
|
struct _PencilOptions
|
|
{
|
|
PaintOptions paint_options;
|
|
};
|
|
|
|
|
|
/* forward function declarations */
|
|
static void pencil_motion (PaintCore *paint_core,
|
|
GimpDrawable *drawable,
|
|
PaintPressureOptions *pressure_options,
|
|
gboolean );
|
|
static gpointer pencil_paint_func (PaintCore *paint_core,
|
|
GimpDrawable *drawable,
|
|
PaintState state);
|
|
|
|
|
|
static PencilOptions *pencil_options = NULL;
|
|
|
|
static gboolean non_gui_incremental = FALSE;
|
|
static void pencil_options_reset (void);
|
|
|
|
|
|
/* functions */
|
|
|
|
gpointer
|
|
pencil_paint_func (PaintCore *paint_core,
|
|
GimpDrawable *drawable,
|
|
PaintState state)
|
|
{
|
|
switch (state)
|
|
{
|
|
case INIT_PAINT:
|
|
break;
|
|
|
|
case MOTION_PAINT:
|
|
pencil_motion (paint_core, drawable,
|
|
pencil_options->paint_options.pressure_options,
|
|
pencil_options->paint_options.incremental);
|
|
break;
|
|
|
|
case FINISH_PAINT:
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
static PencilOptions *
|
|
pencil_options_new (void)
|
|
{
|
|
PencilOptions *options;
|
|
|
|
options = g_new (PencilOptions, 1);
|
|
paint_options_init ((PaintOptions *) options,
|
|
PENCIL,
|
|
pencil_options_reset);
|
|
|
|
return options;
|
|
}
|
|
|
|
static void
|
|
pencil_options_reset (void)
|
|
{
|
|
paint_options_reset ((PaintOptions *) pencil_options);
|
|
}
|
|
|
|
Tool *
|
|
tools_new_pencil (void)
|
|
{
|
|
Tool * tool;
|
|
PaintCore * private;
|
|
|
|
/* The tool options */
|
|
if (!pencil_options)
|
|
{
|
|
pencil_options = pencil_options_new ();
|
|
tools_register (PENCIL, (ToolOptions *) pencil_options);
|
|
pencil_options_reset();
|
|
}
|
|
|
|
tool = paint_core_new (PENCIL);
|
|
|
|
private = (PaintCore *) tool->private;
|
|
private->paint_func = pencil_paint_func;
|
|
private->pick_colors = TRUE;
|
|
private->flags |= TOOL_CAN_HANDLE_CHANGING_BRUSH;
|
|
|
|
return tool;
|
|
}
|
|
|
|
void
|
|
tools_free_pencil (Tool *tool)
|
|
{
|
|
paint_core_free (tool);
|
|
}
|
|
|
|
static void
|
|
pencil_motion (PaintCore *paint_core,
|
|
GimpDrawable *drawable,
|
|
PaintPressureOptions *pressure_options,
|
|
gboolean increment)
|
|
{
|
|
GImage *gimage;
|
|
TempBuf *area;
|
|
guchar col[MAX_CHANNELS];
|
|
gint opacity;
|
|
gdouble scale;
|
|
PaintApplicationMode paint_appl_mode = increment ? INCREMENTAL : CONSTANT;
|
|
|
|
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;
|
|
|
|
/* color the pixels */
|
|
if (pressure_options->color)
|
|
{
|
|
GimpRGB color;
|
|
|
|
gimp_gradient_get_color_at (gimp_context_get_gradient (NULL),
|
|
paint_core->curpressure, &color);
|
|
|
|
gimp_rgba_get_uchar (&color,
|
|
&col[RED_PIX],
|
|
&col[GREEN_PIX],
|
|
&col[BLUE_PIX],
|
|
&col[ALPHA_PIX]);
|
|
|
|
paint_appl_mode = INCREMENTAL;
|
|
color_pixels (temp_buf_data (area), col,
|
|
area->width * area->height, area->bytes);
|
|
}
|
|
else if (paint_core->brush && paint_core->brush->pixmap)
|
|
{
|
|
/* if its a pixmap, do pixmap stuff */
|
|
paint_core_color_area_with_pixmap (paint_core, gimage, drawable, area,
|
|
scale, HARD);
|
|
paint_appl_mode = INCREMENTAL;
|
|
}
|
|
else
|
|
{
|
|
gimp_image_get_foreground (gimage, drawable, col);
|
|
col[area->bytes - 1] = OPAQUE_OPACITY;
|
|
color_pixels (temp_buf_data (area), col,
|
|
area->width * area->height, area->bytes);
|
|
}
|
|
|
|
opacity = 255 * 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),
|
|
HARD, scale, paint_appl_mode);
|
|
}
|
|
|
|
static gpointer
|
|
pencil_non_gui_paint_func (PaintCore *paint_core,
|
|
GimpDrawable *drawable,
|
|
PaintState state)
|
|
{
|
|
pencil_motion (paint_core, drawable, &non_gui_pressure_options,
|
|
non_gui_incremental);
|
|
|
|
return NULL;
|
|
}
|
|
|
|
|
|
gboolean
|
|
pencil_non_gui (GimpDrawable *drawable,
|
|
int num_strokes,
|
|
double *stroke_array)
|
|
{
|
|
int 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 = pencil_non_gui_paint_func;
|
|
|
|
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];
|
|
|
|
pencil_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;
|
|
}
|