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https://gitlab.gnome.org/GNOME/gimp
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f6858e21d1
* app/*.[ch]: Actually use the enum types GimpImageType, GimpImageBaseType, LayerModeEffects, PaintApplicationMode, BrushApplicationMode, GimpFillType and ConvertPaletteType, instead of just int or gint. Hopefully I catched most of the places where these should be used. Add an enum ConvolutionType, suffix the too general constants NORMAL, ABSOLUTE and NEGATIVE with _CONVOL. Use NORMAL_MODE instead of NORMAL in some places (this was what was intended). Fix some minor gccisms. * app/apptypes.h: New file. This file contains the above enumeration types, and some opaque struct typedefs. It was necessary to collect these in one header that doesn't include other headers, because when we started using the above mentioned types in the headers, all hell broke loose because of the spaghetti-like cross-inclusion mess between headers. (An example: Header A includes header B, which includes header C which includes A. B uses a type defined in A. This is not defined, because A hasn't defined it yet at the point where it includes B, and A included from B of course is skipped as we already are reading A.)
223 lines
5.5 KiB
C
223 lines
5.5 KiB
C
/* The GIMP -- an image manipulation program
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* Copyright (C) 1995 Spencer Kimball and Peter Mattis
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#include <stdlib.h>
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#include "appenv.h"
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#include "drawable.h"
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#include "errors.h"
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#include "gdisplay.h"
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#include "gimpbrushpixmap.h"
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#include "paint_funcs.h"
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#include "paint_core.h"
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#include "paint_options.h"
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#include "paintbrush.h"
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#include "palette.h"
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#include "pencil.h"
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/* for color_area_with_pixmap */
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#include "pixmapbrush.h"
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#include "selection.h"
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#include "tools.h"
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#include "libgimp/gimpintl.h"
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/* the pencil tool options */
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typedef struct _PencilOptions PencilOptions;
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struct _PencilOptions
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{
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PaintOptions paint_options;
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gboolean incremental;
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gboolean incremental_d;
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GtkWidget *incremental_w;
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};
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static PencilOptions *pencil_options = NULL;
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/* forward function declarations */
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static void pencil_motion (PaintCore *, GimpDrawable *, gboolean);
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static gboolean non_gui_incremental = FALSE;
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#define PENCIL_INCREMENTAL_DEFAULT FALSE
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/* functions */
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void *
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pencil_paint_func (PaintCore *paint_core,
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GimpDrawable *drawable,
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int state)
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{
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switch (state)
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{
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case INIT_PAINT :
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break;
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case MOTION_PAINT :
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pencil_motion (paint_core, drawable, pencil_options->incremental);
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break;
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case FINISH_PAINT :
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break;
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default :
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break;
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}
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return NULL;
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}
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void
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pencil_options_reset (void)
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{
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paint_options_reset (&pencil_options->paint_options);
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}
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Tool *
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tools_new_pencil (void)
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{
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Tool * tool;
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PaintCore * private;
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/* The tool options */
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if (!pencil_options)
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{
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pencil_options = paint_options_new (PENCIL, pencil_options_reset);
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tools_register (PENCIL, (ToolOptions *) pencil_options);
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}
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tool = paint_core_new (PENCIL);
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private = (PaintCore *) tool->private;
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private->paint_func = pencil_paint_func;
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private->pick_colors = TRUE;
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return tool;
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}
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void
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tools_free_pencil (Tool *tool)
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{
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paint_core_free (tool);
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}
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static void
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pencil_motion (PaintCore *paint_core,
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GimpDrawable *drawable,
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gboolean increment)
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{
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GImage *gimage;
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TempBuf * area;
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unsigned char col[MAX_CHANNELS];
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gint opacity;
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PaintApplicationMode paint_appl_mode = increment ? INCREMENTAL : CONSTANT;
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if (! (gimage = drawable_gimage (drawable)))
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return;
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gimage_get_foreground (gimage, drawable, col);
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/* Get a region which can be used to paint to */
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if (! (area = paint_core_get_paint_area (paint_core, drawable)))
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return;
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/* set the alpha channel */
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col[area->bytes - 1] = OPAQUE_OPACITY;
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if (GIMP_IS_BRUSH_PIXMAP (paint_core->brush))
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{
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/* if its a pixmap, do pixmap stuff */
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color_area_with_pixmap (gimage, drawable, area, paint_core->brush);
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paint_appl_mode = INCREMENTAL;
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}
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else
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{
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/* color the pixels */
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color_pixels (temp_buf_data (area), col,
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area->width * area->height, area->bytes);
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}
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/*Make the opacity dependent on the current pressure
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This makes a more natural pencil since light pressure
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on a graphite pen will give transparent line */
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opacity = 255 * gimp_context_get_opacity (NULL) * (paint_core->curpressure / 0.5);
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if (opacity > 255)
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opacity = 255;
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/* paste the newly painted canvas to the gimage which is being worked on */
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paint_core_paste_canvas (paint_core, drawable, opacity,
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(int) (gimp_context_get_opacity (NULL) * 255),
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gimp_context_get_paint_mode (NULL),
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HARD, paint_appl_mode);
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}
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static void *
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pencil_non_gui_paint_func (PaintCore *paint_core,
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GimpDrawable *drawable,
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int state)
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{
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pencil_motion (paint_core, drawable, non_gui_incremental );
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return NULL;
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}
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gboolean
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pencil_non_gui (GimpDrawable *drawable,
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int num_strokes,
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double *stroke_array)
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{
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int i;
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if (paint_core_init (&non_gui_paint_core, drawable,
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stroke_array[0], stroke_array[1]))
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{
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/* Set the paint core's paint func */
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non_gui_paint_core.paint_func = pencil_non_gui_paint_func;
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non_gui_paint_core.startx = non_gui_paint_core.lastx = stroke_array[0];
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non_gui_paint_core.starty = non_gui_paint_core.lasty = stroke_array[1];
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pencil_non_gui_paint_func (&non_gui_paint_core, drawable, 0);
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for (i = 1; i < num_strokes; i++)
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{
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non_gui_paint_core.curx = stroke_array[i * 2 + 0];
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non_gui_paint_core.cury = stroke_array[i * 2 + 1];
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paint_core_interpolate (&non_gui_paint_core, drawable);
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non_gui_paint_core.lastx = non_gui_paint_core.curx;
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non_gui_paint_core.lasty = non_gui_paint_core.cury;
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}
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/* Finish the painting */
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paint_core_finish (&non_gui_paint_core, drawable, -1);
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/* Cleanup */
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paint_core_cleanup ();
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return TRUE;
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}
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else
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return FALSE;
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}
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