mirror of https://github.com/GNOME/gimp.git
559 lines
15 KiB
C
559 lines
15 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 "libgimpwidgets/gimpwidgets.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 "gimpairbrushtool.h"
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#include "paint_options.h"
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#include "gimptool.h"
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#include "tool_manager.h"
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#include "gdisplay.h"
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#include "libgimp/gimpintl.h"
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#define WANT_AIRBRUSH_BITS
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#include "icons.h"
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/* The maximum amount of pressure that can be exerted */
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#define MAX_PRESSURE 0.075
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/* Default pressure setting */
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#define AIRBRUSH_DEFAULT_RATE 0.0
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#define AIRBRUSH_DEFAULT_PRESSURE 10.0
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#define AIRBRUSH_DEFAULT_INCREMENTAL FALSE
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#define OFF 0
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#define ON 1
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/* the airbrush structures */
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typedef struct _AirbrushTimeout AirbrushTimeout;
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struct _AirbrushTimeout
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{
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GimpPaintTool *paint_tool;
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GimpDrawable *drawable;
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};
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typedef struct _AirbrushOptions AirbrushOptions;
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struct _AirbrushOptions
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{
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PaintOptions paint_options;
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gdouble rate;
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gdouble rate_d;
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GtkObject *rate_w;
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gdouble pressure;
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gdouble pressure_d;
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GtkObject *pressure_w;
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};
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/* local function prototypes */
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static void gimp_airbrush_tool_class_init (GimpAirbrushToolClass *klass);
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static void gimp_airbrush_tool_init (GimpAirbrushTool *airbrush);
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static void gimp_airbrush_tool_destroy (GtkObject *object);
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static void gimp_airbrush_tool_paint (GimpPaintTool *paint_tool,
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GimpDrawable *drawable,
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PaintState state);
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static void gimp_airbrush_tool_motion (GimpPaintTool *paint_tool,
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GimpDrawable *drawable,
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PaintPressureOptions *pressure_options,
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gdouble pressure,
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gboolean incremental);
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static gint airbrush_time_out (gpointer data);
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static AirbrushOptions * airbrush_options_new (void);
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static void airbrush_options_reset (ToolOptions *tool_options);
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/* local variables */
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static gint timer; /* timer for successive paint applications */
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static gint timer_state = OFF; /* state of airbrush tool */
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static AirbrushTimeout airbrush_timeout;
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static gdouble non_gui_rate;
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static gdouble non_gui_pressure;
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static gboolean non_gui_incremental;
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static AirbrushOptions *airbrush_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_airbrush_tool_register (Gimp *gimp)
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{
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tool_manager_register_tool (gimp,
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GIMP_TYPE_AIRBRUSH_TOOL,
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TRUE,
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"gimp:airbrush_tool",
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_("Airbrush"),
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_("Airbrush with variable pressure"),
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N_("/Tools/Paint Tools/Airbrush"), "A",
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NULL, "tools/airbrush.html",
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(const gchar **) airbrush_bits);
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}
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GtkType
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gimp_airbrush_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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"GimpAirbrushTool",
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sizeof (GimpAirbrushTool),
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sizeof (GimpAirbrushToolClass),
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(GtkClassInitFunc) gimp_airbrush_tool_class_init,
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(GtkObjectInitFunc) gimp_airbrush_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_airbrush_tool_class_init (GimpAirbrushToolClass *klass)
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{
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GtkObjectClass *object_class;
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GimpPaintToolClass *paint_tool_class;
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object_class = (GtkObjectClass *) klass;
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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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object_class->destroy = gimp_airbrush_tool_destroy;
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paint_tool_class->paint = gimp_airbrush_tool_paint;
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}
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static void
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gimp_airbrush_tool_init (GimpAirbrushTool *airbrush)
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{
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GimpTool *tool;
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GimpPaintTool *paint_tool;
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tool = GIMP_TOOL (airbrush);
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paint_tool = GIMP_PAINT_TOOL (airbrush);
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if (! airbrush_options)
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{
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airbrush_options = airbrush_options_new ();
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tool_manager_register_tool_options (GIMP_TYPE_AIRBRUSH_TOOL,
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(ToolOptions *) airbrush_options);
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}
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tool->tool_cursor = GIMP_AIRBRUSH_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_airbrush_tool_destroy (GtkObject *object)
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{
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if (timer_state == ON)
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{
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gtk_timeout_remove (timer);
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timer_state = OFF;
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}
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if (GTK_OBJECT_CLASS (parent_class)->destroy)
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GTK_OBJECT_CLASS (parent_class)->destroy (object);
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}
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static void
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gimp_airbrush_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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gdouble pressure;
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gdouble rate;
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gboolean incremental;
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GimpBrush *brush;
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if (!drawable)
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return;
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if (airbrush_options)
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{
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pressure_options = airbrush_options->paint_options.pressure_options;
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pressure = airbrush_options->pressure;
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rate = airbrush_options->rate;
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incremental = airbrush_options->paint_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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pressure = non_gui_pressure;
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rate = non_gui_rate;
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incremental = non_gui_incremental;
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}
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brush =
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gimp_context_get_brush (gimp_get_current_context (drawable->gimage->gimp));
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switch (state)
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{
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case INIT_PAINT:
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if (timer_state == ON)
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{
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g_warning ("killing stray timer, please report to lewing@gimp.org");
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gtk_timeout_remove (timer);
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timer_state = OFF;
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}
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break;
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case MOTION_PAINT:
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if (timer_state == ON)
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{
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gtk_timeout_remove (timer);
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timer_state = OFF;
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}
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gimp_airbrush_tool_motion (paint_tool,
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drawable,
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pressure_options,
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pressure,
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incremental);
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if (rate != 0.0)
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{
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gdouble timeout;
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airbrush_timeout.paint_tool = paint_tool;
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airbrush_timeout.drawable = drawable;
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timeout = (pressure_options->rate ?
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(10000 / (rate * 2.0 * paint_tool->curpressure)) :
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(10000 / rate));
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timer = gtk_timeout_add (timeout, airbrush_time_out, NULL);
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timer_state = ON;
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}
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break;
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case FINISH_PAINT:
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if (timer_state == ON)
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{
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gtk_timeout_remove (timer);
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timer_state = OFF;
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}
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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 gint
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airbrush_time_out (gpointer client_data)
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{
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PaintPressureOptions *pressure_options;
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gdouble pressure;
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gdouble rate;
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gboolean incremental;
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if (airbrush_options)
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{
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pressure_options = airbrush_options->paint_options.pressure_options;
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pressure = airbrush_options->pressure;
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rate = airbrush_options->rate;
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incremental = airbrush_options->paint_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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pressure = non_gui_pressure;
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rate = non_gui_rate;
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incremental = non_gui_incremental;
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}
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gimp_airbrush_tool_motion (airbrush_timeout.paint_tool,
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airbrush_timeout.drawable,
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pressure_options,
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pressure,
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incremental);
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gdisplays_flush ();
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/* restart the timer */
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if (rate != 0.0)
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{
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if (pressure_options->rate)
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{
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/* set a new timer */
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timer = gtk_timeout_add ((10000 / (rate * 2.0 * airbrush_timeout.paint_tool->curpressure)),
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airbrush_time_out, NULL);
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return FALSE;
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}
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return TRUE;
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}
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return FALSE;
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}
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static void
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gimp_airbrush_tool_motion (GimpPaintTool *paint_tool,
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GimpDrawable *drawable,
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PaintPressureOptions *pressure_options,
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gdouble pressure,
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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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gdouble scale;
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PaintApplicationMode paint_appl_mode = incremental ? INCREMENTAL : CONSTANT;
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if (!drawable)
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return;
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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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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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paint_appl_mode = INCREMENTAL;
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gimp_paint_tool_color_area_with_pixmap (paint_tool, gimage,
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drawable, area,
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scale, SOFT);
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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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if (pressure_options->pressure)
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pressure = pressure * 2.0 * paint_tool->curpressure;
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/* paste the newly painted area to the image */
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gimp_paint_tool_paste_canvas (paint_tool, drawable,
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MIN (pressure, 255),
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(gint) (gimp_context_get_opacity (context) * 255),
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gimp_context_get_paint_mode (gimp_get_current_context (gimage->gimp)),
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SOFT, scale, paint_appl_mode);
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}
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gboolean
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airbrush_non_gui_default (GimpDrawable *drawable,
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gint num_strokes,
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gdouble *stroke_array)
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{
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AirbrushOptions *options = airbrush_options;
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gdouble pressure = AIRBRUSH_DEFAULT_PRESSURE;
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if (options)
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pressure = options->pressure;
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return airbrush_non_gui (drawable, pressure, num_strokes, stroke_array);
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}
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gboolean
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airbrush_non_gui (GimpDrawable *drawable,
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gdouble pressure,
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gint num_strokes,
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gdouble *stroke_array)
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{
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static GimpAirbrushTool *non_gui_airbrush = NULL;
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GimpPaintTool *paint_tool;
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gint i;
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if (! non_gui_airbrush)
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{
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non_gui_airbrush = gtk_type_new (GIMP_TYPE_AIRBRUSH_TOOL);
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}
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paint_tool = GIMP_PAINT_TOOL (non_gui_airbrush);
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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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non_gui_rate = AIRBRUSH_DEFAULT_RATE;
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non_gui_pressure = pressure;
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non_gui_incremental = AIRBRUSH_DEFAULT_INCREMENTAL;
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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_airbrush_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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static AirbrushOptions *
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airbrush_options_new (void)
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{
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AirbrushOptions *options;
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GtkWidget *vbox;
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GtkWidget *table;
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GtkWidget *scale;
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options = g_new0 (AirbrushOptions, 1);
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paint_options_init ((PaintOptions *) options,
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GIMP_TYPE_AIRBRUSH_TOOL,
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airbrush_options_reset);
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options->rate = options->rate_d = 80.0;
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options->pressure = options->pressure_d = AIRBRUSH_DEFAULT_PRESSURE;
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/* the main vbox */
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vbox = ((ToolOptions *) options)->main_vbox;
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/* the rate scale */
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table = gtk_table_new (2, 2, FALSE);
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gtk_table_set_col_spacing (GTK_TABLE (table), 0, 4);
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gtk_table_set_row_spacings (GTK_TABLE (table), 1);
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gtk_box_pack_start (GTK_BOX (vbox), table, FALSE, FALSE, 0);
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options->rate_w =
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gtk_adjustment_new (options->rate_d, 0.0, 150.0, 1.0, 1.0, 0.0);
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scale = gtk_hscale_new (GTK_ADJUSTMENT (options->rate_w));
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gtk_scale_set_value_pos (GTK_SCALE (scale), GTK_POS_TOP);
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gtk_range_set_update_policy (GTK_RANGE (scale), GTK_UPDATE_DELAYED);
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gtk_signal_connect (GTK_OBJECT (options->rate_w), "value_changed",
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GTK_SIGNAL_FUNC (gimp_double_adjustment_update),
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&options->rate);
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gimp_table_attach_aligned (GTK_TABLE (table), 0, 0,
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_("Rate:"), 1.0, 1.0,
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scale, 1, FALSE);
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/* the pressure scale */
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options->pressure_w =
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gtk_adjustment_new (options->pressure_d, 0.0, 100.0, 1.0, 1.0, 0.0);
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scale = gtk_hscale_new (GTK_ADJUSTMENT (options->pressure_w));
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gtk_scale_set_value_pos (GTK_SCALE (scale), GTK_POS_TOP);
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gtk_range_set_update_policy (GTK_RANGE (scale), GTK_UPDATE_DELAYED);
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gtk_signal_connect (GTK_OBJECT (options->pressure_w), "value_changed",
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GTK_SIGNAL_FUNC (gimp_double_adjustment_update),
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&options->pressure);
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gimp_table_attach_aligned (GTK_TABLE (table), 0, 1,
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_("Pressure:"), 1.0, 1.0,
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scale, 1, FALSE);
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gtk_widget_show (table);
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return options;
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}
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static void
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airbrush_options_reset (ToolOptions *tool_options)
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{
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AirbrushOptions *options;
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options = (AirbrushOptions *) tool_options;
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paint_options_reset (tool_options);
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|
gtk_adjustment_set_value (GTK_ADJUSTMENT (options->rate_w),
|
|
options->rate_d);
|
|
gtk_adjustment_set_value (GTK_ADJUSTMENT (options->pressure_w),
|
|
options->pressure_d);
|
|
}
|