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gimp/app/tools/gimpblendtool.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 <gtk/gtk.h>
#include "libgimpbase/gimpbase.h"
#include "libgimpwidgets/gimpwidgets.h"
#include "tools-types.h"
#include "core/gimp.h"
#include "core/gimpcontext.h"
#include "core/gimpdrawable.h"
#include "core/gimpdrawable-blend.h"
#include "core/gimpgradient.h"
#include "core/gimpimage.h"
#include "core/gimptoolinfo.h"
#include "paint/gimppaintoptions.h"
#include "display/gimpdisplay.h"
#include "display/gimpprogress.h"
#include "widgets/gimpdnd.h"
#include "widgets/gimpdialogfactory.h"
#include "widgets/gimpdock.h"
#include "widgets/gimpenummenu.h"
#include "widgets/gimppreview.h"
#include "gimpblendtool.h"
#include "paint_options.h"
#include "libgimp/gimpintl.h"
#define TARGET_SIZE 15
typedef struct _BlendOptions BlendOptions;
struct _BlendOptions
{
GimpPaintOptions paint_options;
gdouble offset;
gdouble offset_d;
GtkObject *offset_w;
GimpGradientType gradient_type;
GimpGradientType gradient_type_d;
GtkWidget *gradient_type_w;
GimpRepeatMode repeat;
GimpRepeatMode repeat_d;
GtkWidget *repeat_w;
gint supersample;
gint supersample_d;
GtkWidget *supersample_w;
gint max_depth;
gint max_depth_d;
GtkObject *max_depth_w;
gdouble threshold;
gdouble threshold_d;
GtkObject *threshold_w;
};
/* local function prototypes */
static void gimp_blend_tool_class_init (GimpBlendToolClass *klass);
static void gimp_blend_tool_init (GimpBlendTool *blend_tool);
static void gimp_blend_tool_button_press (GimpTool *tool,
GimpCoords *coords,
guint32 time,
GdkModifierType state,
GimpDisplay *gdisp);
static void gimp_blend_tool_button_release (GimpTool *tool,
GimpCoords *coords,
guint32 time,
GdkModifierType state,
GimpDisplay *gdisp);
static void gimp_blend_tool_motion (GimpTool *tool,
GimpCoords *coords,
guint32 time,
GdkModifierType state,
GimpDisplay *gdisp);
static void gimp_blend_tool_cursor_update (GimpTool *tool,
GimpCoords *coords,
GdkModifierType state,
GimpDisplay *gdisp);
static void gimp_blend_tool_draw (GimpDrawTool *draw_tool);
static GimpToolOptions * blend_options_new (GimpToolInfo *tool_info);
static void blend_options_reset (GimpToolOptions *tool_options);
static void blend_options_gradient_clicked (GtkWidget *widget,
gpointer data);
static void gradient_type_callback (GtkWidget *widget,
gpointer data);
static void blend_options_drop_gradient (GtkWidget *widget,
GimpViewable *viewable,
gpointer data);
static void blend_options_drop_tool (GtkWidget *widget,
GimpViewable *viewable,
gpointer data);
/* private variables */
static GimpDrawToolClass *parent_class = NULL;
/* public functions */
void
gimp_blend_tool_register (GimpToolRegisterCallback callback,
gpointer data)
{
(* callback) (GIMP_TYPE_BLEND_TOOL,
blend_options_new,
TRUE,
"gimp-blend-tool",
_("Blend"),
_("Fill with a color gradient"),
N_("/Tools/Paint Tools/Blend"), "L",
NULL, "tools/blend.html",
GIMP_STOCK_TOOL_BLEND,
data);
}
GType
gimp_blend_tool_get_type (void)
{
static GType tool_type = 0;
if (! tool_type)
{
static const GTypeInfo tool_info =
{
sizeof (GimpBlendToolClass),
(GBaseInitFunc) NULL,
(GBaseFinalizeFunc) NULL,
(GClassInitFunc) gimp_blend_tool_class_init,
NULL, /* class_finalize */
NULL, /* class_data */
sizeof (GimpBlendTool),
0, /* n_preallocs */
(GInstanceInitFunc) gimp_blend_tool_init,
};
tool_type = g_type_register_static (GIMP_TYPE_DRAW_TOOL,
"GimpBlendTool",
&tool_info, 0);
}
return tool_type;
}
/* private functions */
static void
gimp_blend_tool_class_init (GimpBlendToolClass *klass)
{
GObjectClass *object_class;
GimpToolClass *tool_class;
GimpDrawToolClass *draw_tool_class;
object_class = G_OBJECT_CLASS (klass);
tool_class = GIMP_TOOL_CLASS (klass);
draw_tool_class = GIMP_DRAW_TOOL_CLASS (klass);
parent_class = g_type_class_peek_parent (klass);
tool_class->button_press = gimp_blend_tool_button_press;
tool_class->button_release = gimp_blend_tool_button_release;
tool_class->motion = gimp_blend_tool_motion;
tool_class->cursor_update = gimp_blend_tool_cursor_update;
draw_tool_class->draw = gimp_blend_tool_draw;
}
static void
gimp_blend_tool_init (GimpBlendTool *blend_tool)
{
GimpTool *tool;
tool = GIMP_TOOL (blend_tool);
gimp_tool_control_set_scroll_lock (tool->control, TRUE);
gimp_tool_control_set_tool_cursor (tool->control, GIMP_BLEND_TOOL_CURSOR);
}
static void
gimp_blend_tool_button_press (GimpTool *tool,
GimpCoords *coords,
guint32 time,
GdkModifierType state,
GimpDisplay *gdisp)
{
GimpBlendTool *blend_tool;
gint off_x, off_y;
blend_tool = GIMP_BLEND_TOOL (tool);
switch (gimp_drawable_type (gimp_image_active_drawable (gdisp->gimage)))
{
case GIMP_INDEXED_IMAGE: case GIMP_INDEXEDA_IMAGE:
g_message (_("Blend: Invalid for indexed images."));
return;
break;
default:
break;
}
gimp_drawable_offsets (gimp_image_active_drawable (gdisp->gimage),
&off_x, &off_y);
blend_tool->endx = blend_tool->startx = coords->x - off_x;
blend_tool->endy = blend_tool->starty = coords->y - off_y;
tool->gdisp = gdisp;
gimp_tool_control_activate (tool->control);
/* initialize the statusbar display */
gimp_tool_push_status (tool, _("Blend: 0, 0"));
/* Start drawing the blend tool */
gimp_draw_tool_start (GIMP_DRAW_TOOL (tool), gdisp);
}
static void
gimp_blend_tool_button_release (GimpTool *tool,
GimpCoords *coords,
guint32 time,
GdkModifierType state,
GimpDisplay *gdisp)
{
GimpBlendTool *blend_tool;
BlendOptions *options;
GimpImage *gimage;
GimpProgress *progress;
blend_tool = GIMP_BLEND_TOOL (tool);
options = (BlendOptions *) tool->tool_info->tool_options;
gimage = gdisp->gimage;
gimp_tool_pop_status (tool);
gimp_draw_tool_stop (GIMP_DRAW_TOOL (tool));
gimp_tool_control_halt (tool->control); /* sets paused_count to 0 -- is this ok? */
/* if the 3rd button isn't pressed, fill the selected region */
if (! (state & GDK_BUTTON3_MASK) &&
((blend_tool->startx != blend_tool->endx) ||
(blend_tool->starty != blend_tool->endy)))
{
progress = gimp_progress_start (gdisp, _("Blending..."), FALSE,
NULL, NULL);
gimp_drawable_blend (gimp_image_active_drawable (gimage),
GIMP_CUSTOM_MODE,
gimp_context_get_paint_mode (gimp_get_current_context (gimage->gimp)),
options->gradient_type,
gimp_context_get_opacity (gimp_get_current_context (gimage->gimp)),
options->offset,
options->repeat,
options->supersample,
options->max_depth,
options->threshold,
blend_tool->startx,
blend_tool->starty,
blend_tool->endx,
blend_tool->endy,
progress ? gimp_progress_update_and_flush : NULL,
progress);
if (progress)
gimp_progress_end (progress);
gimp_image_flush (gimage);
}
}
static void
gimp_blend_tool_motion (GimpTool *tool,
GimpCoords *coords,
guint32 time,
GdkModifierType state,
GimpDisplay *gdisp)
{
GimpBlendTool *blend_tool;
gint off_x, off_y;
blend_tool = GIMP_BLEND_TOOL (tool);
gimp_draw_tool_pause (GIMP_DRAW_TOOL (tool));
gimp_drawable_offsets (gimp_image_active_drawable (gdisp->gimage),
&off_x, &off_y);
/* Get the current coordinates */
blend_tool->endx = coords->x - off_x;
blend_tool->endy = coords->y - off_y;
/* Restrict to multiples of 15 degrees if ctrl is pressed */
if (state & GDK_CONTROL_MASK)
{
gint tangens2[6] = { 34, 106, 196, 334, 618, 1944 };
gint cosinus[7] = { 256, 247, 222, 181, 128, 66, 0 };
gint dx, dy, i, radius, frac;
dx = blend_tool->endx - blend_tool->startx;
dy = blend_tool->endy - blend_tool->starty;
if (dy)
{
radius = sqrt (SQR (dx) + SQR (dy));
frac = abs ((dx << 8) / dy);
for (i = 0; i < 6; i++)
{
if (frac < tangens2[i])
break;
}
dx = dx > 0 ?
(cosinus[6-i] * radius) >> 8 : - ((cosinus[6-i] * radius) >> 8);
dy = dy > 0 ?
(cosinus[i] * radius) >> 8 : - ((cosinus[i] * radius) >> 8);
}
blend_tool->endx = blend_tool->startx + dx;
blend_tool->endy = blend_tool->starty + dy;
}
gimp_tool_pop_status (tool);
gimp_tool_push_status_coords (tool,
_("Blend: "),
blend_tool->endx - blend_tool->startx,
", ",
blend_tool->endy - blend_tool->starty);
gimp_draw_tool_resume (GIMP_DRAW_TOOL (tool));
}
static void
gimp_blend_tool_cursor_update (GimpTool *tool,
GimpCoords *coords,
GdkModifierType state,
GimpDisplay *gdisp)
{
switch (gimp_drawable_type (gimp_image_active_drawable (gdisp->gimage)))
{
case GIMP_INDEXED_IMAGE:
case GIMP_INDEXEDA_IMAGE:
gimp_tool_control_set_cursor (tool->control, GIMP_BAD_CURSOR);
break;
default:
gimp_tool_control_set_cursor (tool->control, GIMP_MOUSE_CURSOR);
break;
}
GIMP_TOOL_CLASS (parent_class)->cursor_update (tool, coords, state, gdisp);
}
static void
gimp_blend_tool_draw (GimpDrawTool *draw_tool)
{
GimpBlendTool *blend_tool;
blend_tool = GIMP_BLEND_TOOL (draw_tool);
/* Draw start target */
gimp_draw_tool_draw_handle (draw_tool,
GIMP_HANDLE_CROSS,
floor (blend_tool->startx) + 0.5,
floor (blend_tool->starty) + 0.5,
TARGET_SIZE,
TARGET_SIZE,
GTK_ANCHOR_CENTER,
TRUE);
/* Draw end target */
gimp_draw_tool_draw_handle (draw_tool,
GIMP_HANDLE_CROSS,
floor (blend_tool->endx) + 0.5,
floor (blend_tool->endy) + 0.5,
TARGET_SIZE,
TARGET_SIZE,
GTK_ANCHOR_CENTER,
TRUE);
/* Draw the line between the start and end coords */
gimp_draw_tool_draw_line (draw_tool,
floor (blend_tool->startx) + 0.5,
floor (blend_tool->starty) + 0.5,
floor (blend_tool->endx) + 0.5,
floor (blend_tool->endy) + 0.5,
TRUE);
}
static GimpToolOptions *
blend_options_new (GimpToolInfo *tool_info)
{
BlendOptions *options;
GtkWidget *vbox;
GtkWidget *table;
GtkWidget *frame;
/* the new blend tool options structure */
options = g_new0 (BlendOptions, 1);
gimp_paint_options_init ((GimpPaintOptions *) options);
paint_options_init ((GimpPaintOptions *) options, tool_info);
((GimpToolOptions *) options)->reset_func = blend_options_reset;
options->offset = options->offset_d = 0.0;
options->gradient_type = options->gradient_type_d = GIMP_LINEAR;
options->repeat = options->repeat_d = GIMP_REPEAT_NONE;
options->supersample = options->supersample_d = FALSE;
options->max_depth = options->max_depth_d = 3;
options->threshold = options->threshold_d = 0.2;
/* the main vbox */
vbox = ((GimpToolOptions *) options)->main_vbox;
gimp_dnd_viewable_dest_add (vbox,
GIMP_TYPE_GRADIENT,
blend_options_drop_gradient,
tool_info);
gimp_dnd_viewable_dest_add (vbox,
GIMP_TYPE_TOOL_INFO,
blend_options_drop_tool,
options);
/* the offset scale */
table = gtk_table_new (4, 3, FALSE);
gtk_table_set_col_spacings (GTK_TABLE (table), 2);
gtk_table_set_row_spacings (GTK_TABLE (table), 1);
gtk_box_pack_start (GTK_BOX (vbox), table, FALSE, FALSE, 0);
gtk_widget_show (table);
options->offset_w = gimp_scale_entry_new (GTK_TABLE (table), 0, 0,
_("Offset:"), -1, 50,
options->offset,
0.0, 100.0, 1.0, 10.0, 1,
TRUE, 0.0, 0.0,
NULL, NULL);
g_signal_connect (G_OBJECT (options->offset_w), "value_changed",
G_CALLBACK (gimp_double_adjustment_update),
&options->offset);
/* the gradient preview */
{
GimpGradient *gradient;
GtkWidget *button;
GtkWidget *preview;
gradient = gimp_context_get_gradient (tool_info->context);
button = gtk_button_new ();
preview = gimp_preview_new_full (GIMP_VIEWABLE (gradient),
96, 16, 0,
FALSE, FALSE, TRUE);
gtk_container_add (GTK_CONTAINER (button), preview);
gtk_widget_show (preview);
gimp_table_attach_aligned (GTK_TABLE (table), 0, 1,
_("Gradient:"), 1.0, 0.5,
button, 2, TRUE);
g_signal_connect_object (G_OBJECT (tool_info->context), "gradient_changed",
G_CALLBACK (gimp_preview_set_viewable),
G_OBJECT (preview),
G_CONNECT_SWAPPED);
g_signal_connect (G_OBJECT (button), "clicked",
G_CALLBACK (blend_options_gradient_clicked),
NULL);
}
/* the gradient type menu */
options->gradient_type_w =
gimp_enum_option_menu_new (GIMP_TYPE_GRADIENT_TYPE,
G_CALLBACK (gradient_type_callback),
options);
gimp_option_menu_set_history (GTK_OPTION_MENU (options->gradient_type_w),
GINT_TO_POINTER (options->gradient_type));
gimp_table_attach_aligned (GTK_TABLE (table), 0, 2,
_("Shape:"), 1.0, 0.5,
options->gradient_type_w, 2, TRUE);
/* the repeat option */
options->repeat_w =
gimp_enum_option_menu_new (GIMP_TYPE_REPEAT_MODE,
G_CALLBACK (gimp_menu_item_update),
&options->repeat);
gimp_option_menu_set_history (GTK_OPTION_MENU (options->repeat_w),
GINT_TO_POINTER (options->repeat));
gimp_table_attach_aligned (GTK_TABLE (table), 0, 3,
_("Repeat:"), 1.0, 0.5,
options->repeat_w, 2, TRUE);
/* show the table */
gtk_widget_show (table);
/* frame for supersampling options */
frame = gtk_frame_new (NULL);
gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_ETCHED_IN);
gtk_box_pack_start (GTK_BOX (vbox), frame, TRUE, TRUE, 0);
gtk_widget_show (frame);
/* vbox for the supersampling stuff */
vbox = gtk_vbox_new (FALSE, 0);
gtk_container_add (GTK_CONTAINER (frame), vbox);
gtk_widget_show (vbox);
/* supersampling toggle */
options->supersample_w =
gtk_check_button_new_with_label (_("Adaptive Supersampling"));
gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (options->supersample_w),
options->supersample);
gtk_frame_set_label_widget (GTK_FRAME (frame), options->supersample_w);
gtk_widget_show (options->supersample_w);
g_signal_connect (G_OBJECT (options->supersample_w), "toggled",
G_CALLBACK (gimp_toggle_button_update),
&options->supersample);
/* table for supersampling options */
table = gtk_table_new (2, 3, FALSE);
gtk_container_set_border_width (GTK_CONTAINER (table), 2);
gtk_table_set_col_spacings (GTK_TABLE (table), 2);
gtk_table_set_row_spacings (GTK_TABLE (table), 1);
gtk_box_pack_start (GTK_BOX (vbox), table, FALSE, FALSE, 0);
/* automatically set the sensitive state of the table */
gtk_widget_set_sensitive (table, options->supersample);
g_object_set_data (G_OBJECT (options->supersample_w), "set_sensitive",
table);
/* max depth scale */
options->max_depth_w = gimp_scale_entry_new (GTK_TABLE (table), 0, 0,
_("Max Depth:"), -1, 4,
options->max_depth,
1.0, 10.0, 1.0, 1.0, 0,
TRUE, 0.0, 0.0,
NULL, NULL);
g_signal_connect (G_OBJECT(options->max_depth_w), "value_changed",
G_CALLBACK (gimp_int_adjustment_update),
&options->max_depth);
/* threshold scale */
options->threshold_w = gimp_scale_entry_new (GTK_TABLE (table), 0, 1,
_("Threshold:"), -1, 4,
options->threshold,
0.0, 4.0, 0.01, 0.1, 2,
TRUE, 0.0, 0.0,
NULL, NULL);
g_signal_connect (G_OBJECT (options->threshold_w), "value_changed",
G_CALLBACK (gimp_double_adjustment_update),
&options->threshold);
/* show the table */
gtk_widget_show (table);
return (GimpToolOptions *) options;
}
static void
blend_options_reset (GimpToolOptions *tool_options)
{
BlendOptions *options;
options = (BlendOptions *) tool_options;
paint_options_reset (tool_options);
options->gradient_type = options->gradient_type_d;
options->repeat = options->repeat_d;
gtk_option_menu_set_history (GTK_OPTION_MENU (options->gradient_type_w),
options->gradient_type_d);
gtk_option_menu_set_history (GTK_OPTION_MENU (options->repeat_w),
options->repeat_d);
gtk_adjustment_set_value (GTK_ADJUSTMENT (options->offset_w),
options->offset_d);
gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (options->supersample_w),
options->supersample_d);
gtk_adjustment_set_value (GTK_ADJUSTMENT (options->max_depth_w),
options->max_depth_d);
gtk_adjustment_set_value (GTK_ADJUSTMENT (options->threshold_w),
options->threshold_d);
}
static void
blend_options_gradient_clicked (GtkWidget *widget,
gpointer data)
{
GtkWidget *toplevel;
toplevel = gtk_widget_get_toplevel (widget);
if (GIMP_IS_DOCK (toplevel))
gimp_dialog_factory_dialog_raise (GIMP_DOCK (toplevel)->dialog_factory,
"gimp-gradient-list", -1);
}
static void
gradient_type_callback (GtkWidget *widget,
gpointer data)
{
BlendOptions *options;
options = (BlendOptions *) data;
gimp_menu_item_update (widget, &options->gradient_type);
gtk_widget_set_sensitive (options->repeat_w,
(options->gradient_type < 6));
}
static void
blend_options_drop_gradient (GtkWidget *widget,
GimpViewable *viewable,
gpointer data)
{
GimpToolInfo *tool_info;
tool_info = GIMP_TOOL_INFO (data);
gimp_context_set_gradient (tool_info->context, GIMP_GRADIENT (viewable));
}
static void
blend_options_drop_tool (GtkWidget *widget,
GimpViewable *viewable,
gpointer data)
{
GimpToolOptions *tool_options;
GimpContext *context;
tool_options = (GimpToolOptions *) data;
context = gimp_get_user_context (tool_options->tool_info->gimp);
gimp_context_set_tool (context, GIMP_TOOL_INFO (viewable));
}
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