mirror of https://github.com/GNOME/gimp.git
309 lines
8.2 KiB
C
309 lines
8.2 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 "config.h"
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#include <gtk/gtk.h>
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#include "libgimpcolor/gimpcolor.h"
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#include "tools-types.h"
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#include "base/temp-buf.h"
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#include "paint-funcs/paint-funcs.h"
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#include "core/gimp.h"
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#include "core/gimpbrush.h"
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#include "core/gimpcontext.h"
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#include "core/gimpdrawable.h"
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#include "core/gimpgradient.h"
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#include "core/gimpimage.h"
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#include "gdisplay.h"
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#include "gimppenciltool.h"
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#include "gimppainttool.h"
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#include "paint_options.h"
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#include "tool_options.h"
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#include "tool_manager.h"
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#include "libgimp/gimpintl.h"
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#define WANT_PENCIL_BITS
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#include "icons.h"
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#define PENCIL_INCREMENTAL_DEFAULT FALSE
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static void gimp_pencil_tool_class_init (GimpPencilToolClass *klass);
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static void gimp_pencil_tool_init (GimpPencilTool *pancil);
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static void gimp_pencil_tool_paint (GimpPaintTool *paint_tool,
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GimpDrawable *drawable,
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PaintState state);
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static void gimp_pencil_tool_motion (GimpPaintTool *paint_tool,
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GimpDrawable *drawable,
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PaintPressureOptions *pressure_options,
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gboolean incremental);
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/* private variables */
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static gboolean non_gui_incremental = PENCIL_INCREMENTAL_DEFAULT;
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static PaintOptions *pencil_options = NULL;
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static GimpPaintToolClass *parent_class = NULL;
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/* functions */
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void
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gimp_pencil_tool_register (Gimp *gimp)
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{
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tool_manager_register_tool (gimp,
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GIMP_TYPE_PENCIL_TOOL,
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TRUE,
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"gimp:pencil_tool",
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_("Pencil"),
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_("Paint hard edged pixels"),
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N_("/Tools/Paint Tools/Pencil"), "P",
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NULL, "tools/pencil.html",
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(const gchar **) pencil_bits);
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}
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GtkType
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gimp_pencil_tool_get_type (void)
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{
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static GtkType tool_type = 0;
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if (! tool_type)
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{
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GtkTypeInfo tool_info =
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{
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"GimpPencilTool",
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sizeof (GimpPencilTool),
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sizeof (GimpPencilToolClass),
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(GtkClassInitFunc) gimp_pencil_tool_class_init,
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(GtkObjectInitFunc) gimp_pencil_tool_init,
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/* reserved_1 */ NULL,
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/* reserved_2 */ NULL,
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NULL
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};
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tool_type = gtk_type_unique (GIMP_TYPE_PAINT_TOOL, &tool_info);
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}
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return tool_type;
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}
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static void
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gimp_pencil_tool_class_init (GimpPencilToolClass *klass)
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{
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GimpPaintToolClass *paint_tool_class;
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paint_tool_class = (GimpPaintToolClass *) klass;
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parent_class = gtk_type_class (GIMP_TYPE_PAINT_TOOL);
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paint_tool_class->paint = gimp_pencil_tool_paint;
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}
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static void
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gimp_pencil_tool_init (GimpPencilTool *pencil)
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{
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GimpTool *tool;
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GimpPaintTool *paint_tool;
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tool = GIMP_TOOL (pencil);
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paint_tool = GIMP_PAINT_TOOL (pencil);
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if (! pencil_options)
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{
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pencil_options = paint_options_new (GIMP_TYPE_PENCIL_TOOL,
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paint_options_reset);
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tool_manager_register_tool_options (GIMP_TYPE_PENCIL_TOOL,
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(ToolOptions *) pencil_options);
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}
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tool->tool_cursor = GIMP_PENCIL_TOOL_CURSOR;
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paint_tool->pick_colors = TRUE;
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paint_tool->flags |= TOOL_CAN_HANDLE_CHANGING_BRUSH;
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}
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static void
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gimp_pencil_tool_paint (GimpPaintTool *paint_tool,
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GimpDrawable *drawable,
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PaintState state)
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{
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PaintPressureOptions *pressure_options;
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gboolean incremental;
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if (pencil_options)
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{
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pressure_options = pencil_options->pressure_options;
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incremental = pencil_options->incremental;
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}
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else
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{
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pressure_options = &non_gui_pressure_options;
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incremental = non_gui_incremental;
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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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gimp_pencil_tool_motion (paint_tool, drawable,
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pressure_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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}
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static void
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gimp_pencil_tool_motion (GimpPaintTool *paint_tool,
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GimpDrawable *drawable,
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PaintPressureOptions *pressure_options,
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gboolean incremental)
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{
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GimpImage *gimage;
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GimpContext *context;
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TempBuf *area;
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guchar col[MAX_CHANNELS];
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gint opacity;
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gdouble scale;
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PaintApplicationMode paint_appl_mode = incremental ? INCREMENTAL : CONSTANT;
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if (! (gimage = gimp_drawable_gimage (drawable)))
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return;
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context = gimp_get_current_context (gimage->gimp);
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if (pressure_options->size)
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scale = paint_tool->curpressure;
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else
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scale = 1.0;
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/* Get a region which can be used to paint to */
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if (! (area = gimp_paint_tool_get_paint_area (paint_tool, drawable, scale)))
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return;
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/* color the pixels */
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if (pressure_options->color)
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{
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GimpRGB color;
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gimp_gradient_get_color_at (gimp_context_get_gradient (context),
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paint_tool->curpressure, &color);
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gimp_rgba_get_uchar (&color,
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&col[RED_PIX],
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&col[GREEN_PIX],
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&col[BLUE_PIX],
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&col[ALPHA_PIX]);
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paint_appl_mode = INCREMENTAL;
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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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else if (paint_tool->brush && paint_tool->brush->pixmap)
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{
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/* if its a pixmap, do pixmap stuff */
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gimp_paint_tool_color_area_with_pixmap (paint_tool, gimage, drawable,
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area, scale, HARD);
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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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gimp_image_get_foreground (gimage, drawable, col);
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col[area->bytes - 1] = OPAQUE_OPACITY;
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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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opacity = 255 * gimp_context_get_opacity (context);
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if (pressure_options->opacity)
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opacity = opacity * 2.0 * paint_tool->curpressure;
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/* paste the newly painted canvas to the gimage which is being worked on */
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gimp_paint_tool_paste_canvas (paint_tool, drawable,
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MIN (opacity, 255),
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gimp_context_get_opacity (context) * 255,
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gimp_context_get_paint_mode (context),
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HARD, scale, paint_appl_mode);
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}
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/* non-gui stuff */
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gboolean
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pencil_non_gui (GimpDrawable *drawable,
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gint num_strokes,
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gdouble *stroke_array)
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{
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static GimpPencilTool *non_gui_pencil = NULL;
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GimpPaintTool *paint_tool;
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gint i;
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if (! non_gui_pencil)
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{
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non_gui_pencil = gtk_type_new (GIMP_TYPE_PENCIL_TOOL);
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}
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paint_tool = GIMP_PAINT_TOOL (non_gui_pencil);
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if (gimp_paint_tool_start (paint_tool, drawable,
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stroke_array[0],
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stroke_array[1]))
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{
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paint_tool->startx = paint_tool->lastx = stroke_array[0];
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paint_tool->starty = paint_tool->lasty = stroke_array[1];
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gimp_pencil_tool_paint (paint_tool, drawable, MOTION_PAINT);
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for (i = 1; i < num_strokes; i++)
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{
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paint_tool->curx = stroke_array[i * 2 + 0];
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paint_tool->cury = stroke_array[i * 2 + 1];
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gimp_paint_tool_interpolate (paint_tool, drawable);
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paint_tool->lastx = paint_tool->curx;
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paint_tool->lasty = paint_tool->cury;
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}
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gimp_paint_tool_finish (paint_tool, drawable);
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return TRUE;
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}
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return FALSE;
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}
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