gimp/app/tools/gimpcolortool.c

711 lines
24 KiB
C

/* The GIMP -- an image manipulation program
* Copyright (C) 1995-2001 Spencer Kimball, Peter Mattis, and others
*
* 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 "libgimpwidgets/gimpwidgets.h"
#include "tools-types.h"
#include "core/gimp.h"
#include "core/gimpimage.h"
#include "core/gimpimage-pick-color.h"
#include "core/gimpimage-sample-points.h"
#include "core/gimpitem.h"
#include "core/gimpmarshal.h"
#include "config/gimpdisplayconfig.h"
#include "display/gimpdisplay.h"
#include "display/gimpdisplayshell.h"
#include "display/gimpdisplayshell-appearance.h"
#include "display/gimpdisplayshell-draw.h"
#include "display/gimpdisplayshell-transform.h"
#include "gimpcoloroptions.h"
#include "gimpcolortool.h"
#include "gimptoolcontrol.h"
#include "gimp-intl.h"
enum
{
PICKED,
LAST_SIGNAL
};
/* local function prototypes */
static void gimp_color_tool_finalize (GObject *object);
static void gimp_color_tool_control (GimpTool *tool,
GimpToolAction action,
GimpDisplay *display);
static void gimp_color_tool_button_press (GimpTool *tool,
GimpCoords *coords,
guint32 time,
GdkModifierType state,
GimpDisplay *display);
static void gimp_color_tool_button_release (GimpTool *tool,
GimpCoords *coords,
guint32 time,
GdkModifierType state,
GimpDisplay *display);
static void gimp_color_tool_motion (GimpTool *tool,
GimpCoords *coords,
guint32 time,
GdkModifierType state,
GimpDisplay *display);
static void gimp_color_tool_oper_update (GimpTool *tool,
GimpCoords *coords,
GdkModifierType state,
gboolean proximity,
GimpDisplay *display);
static void gimp_color_tool_cursor_update (GimpTool *tool,
GimpCoords *coords,
GdkModifierType state,
GimpDisplay *display);
static void gimp_color_tool_draw (GimpDrawTool *draw_tool);
static gboolean gimp_color_tool_real_pick (GimpColorTool *color_tool,
gint x,
gint y,
GimpImageType *sample_type,
GimpRGB *color,
gint *color_index);
static void gimp_color_tool_pick (GimpColorTool *tool,
GimpColorPickState pick_state,
gint x,
gint y);
G_DEFINE_TYPE (GimpColorTool, gimp_color_tool, GIMP_TYPE_DRAW_TOOL);
#define parent_class gimp_color_tool_parent_class
static guint gimp_color_tool_signals[LAST_SIGNAL] = { 0 };
static void
gimp_color_tool_class_init (GimpColorToolClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
GimpToolClass *tool_class = GIMP_TOOL_CLASS (klass);
GimpDrawToolClass *draw_class = GIMP_DRAW_TOOL_CLASS (klass);
gimp_color_tool_signals[PICKED] =
g_signal_new ("picked",
G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_FIRST,
G_STRUCT_OFFSET (GimpColorToolClass, picked),
NULL, NULL,
gimp_marshal_VOID__ENUM_ENUM_BOXED_INT,
G_TYPE_NONE, 4,
GIMP_TYPE_COLOR_PICK_STATE,
GIMP_TYPE_IMAGE_TYPE,
GIMP_TYPE_RGB | G_SIGNAL_TYPE_STATIC_SCOPE,
G_TYPE_INT);
object_class->finalize = gimp_color_tool_finalize;
tool_class->control = gimp_color_tool_control;
tool_class->button_press = gimp_color_tool_button_press;
tool_class->button_release = gimp_color_tool_button_release;
tool_class->motion = gimp_color_tool_motion;
tool_class->oper_update = gimp_color_tool_oper_update;
tool_class->cursor_update = gimp_color_tool_cursor_update;
draw_class->draw = gimp_color_tool_draw;
klass->pick = gimp_color_tool_real_pick;
klass->picked = NULL;
}
static void
gimp_color_tool_init (GimpColorTool *color_tool)
{
GimpTool *tool = GIMP_TOOL (color_tool);
gimp_tool_control_set_action_value_1 (tool->control,
"tools/tools-color-average-radius-set");
color_tool->enabled = FALSE;
color_tool->center_x = 0;
color_tool->center_y = 0;
color_tool->pick_mode = GIMP_COLOR_PICK_MODE_NONE;
color_tool->options = NULL;
color_tool->sample_point = NULL;
color_tool->moving_sample_point = FALSE;
color_tool->sample_point_x = -1;
color_tool->sample_point_y = -1;
}
static void
gimp_color_tool_finalize (GObject *object)
{
GimpColorTool *color_tool = GIMP_COLOR_TOOL (object);
if (color_tool->options)
{
g_object_unref (color_tool->options);
color_tool->options = NULL;
}
G_OBJECT_CLASS (parent_class)->finalize (object);
}
static void
gimp_color_tool_control (GimpTool *tool,
GimpToolAction action,
GimpDisplay *display)
{
GimpColorTool *color_tool = GIMP_COLOR_TOOL (tool);
GimpDisplayShell *shell = GIMP_DISPLAY_SHELL (display->shell);
switch (action)
{
case PAUSE:
break;
case RESUME:
if (color_tool->sample_point &&
gimp_display_shell_get_show_sample_points (GIMP_DISPLAY_SHELL (shell)))
gimp_display_shell_draw_sample_point (GIMP_DISPLAY_SHELL (shell),
color_tool->sample_point, TRUE);
break;
case HALT:
if (color_tool->sample_point &&
gimp_display_shell_get_show_sample_points (GIMP_DISPLAY_SHELL (shell)))
gimp_display_shell_draw_sample_point (GIMP_DISPLAY_SHELL (shell),
color_tool->sample_point, FALSE);
break;
default:
break;
}
GIMP_TOOL_CLASS (parent_class)->control (tool, action, display);
}
static void
gimp_color_tool_button_press (GimpTool *tool,
GimpCoords *coords,
guint32 time,
GdkModifierType state,
GimpDisplay *display)
{
GimpColorTool *color_tool = GIMP_COLOR_TOOL (tool);
GimpDisplayShell *shell = GIMP_DISPLAY_SHELL (display->shell);
/* Make the tool active and set its display & drawable */
tool->display = display;
tool->drawable = gimp_image_active_drawable (display->image);
gimp_tool_control_activate (tool->control);
if (! color_tool->enabled)
return;
if (color_tool->sample_point)
{
color_tool->moving_sample_point = TRUE;
color_tool->sample_point_x = color_tool->sample_point->x;
color_tool->sample_point_y = color_tool->sample_point->y;
gimp_display_shell_selection_visibility (shell, GIMP_SELECTION_PAUSE);
gimp_draw_tool_start (GIMP_DRAW_TOOL (tool), display);
gimp_tool_push_status_coords (tool, display,
_("Move Sample Point: "),
color_tool->sample_point_x,
", ",
color_tool->sample_point_y);
}
else
{
gint off_x, off_y;
/* Keep the coordinates of the target */
gimp_item_offsets (GIMP_ITEM (tool->drawable), &off_x, &off_y);
color_tool->center_x = coords->x - off_x;
color_tool->center_y = coords->y - off_y;
gimp_draw_tool_start (GIMP_DRAW_TOOL (tool), display);
gimp_color_tool_pick (color_tool, GIMP_COLOR_PICK_STATE_NEW,
coords->x, coords->y);
}
}
static void
gimp_color_tool_button_release (GimpTool *tool,
GimpCoords *coords,
guint32 time,
GdkModifierType state,
GimpDisplay *display)
{
GimpColorTool *color_tool = GIMP_COLOR_TOOL (tool);
GimpDisplayShell *shell = GIMP_DISPLAY_SHELL (display->shell);
gimp_tool_control_halt (tool->control);
if (! color_tool->enabled)
return;
if (color_tool->moving_sample_point)
{
gint x, y, width, height;
gimp_tool_pop_status (tool, display);
gimp_draw_tool_stop (GIMP_DRAW_TOOL (tool));
if (state & GDK_BUTTON3_MASK)
{
color_tool->moving_sample_point = FALSE;
color_tool->sample_point_x = -1;
color_tool->sample_point_y = -1;
gimp_display_shell_selection_visibility (shell,
GIMP_SELECTION_RESUME);
return;
}
gimp_display_shell_untransform_viewport (shell, &x, &y, &width, &height);
if ((color_tool->sample_point_x < x ||
color_tool->sample_point_x > (x + width - 1) ||
color_tool->sample_point_y < y ||
color_tool->sample_point_y > (y + height - 1)))
{
if (color_tool->sample_point)
{
gimp_image_remove_sample_point (display->image,
color_tool->sample_point, TRUE);
color_tool->sample_point = NULL;
}
}
else
{
if (color_tool->sample_point)
{
gimp_image_move_sample_point (display->image,
color_tool->sample_point,
color_tool->sample_point_x,
color_tool->sample_point_y,
TRUE);
}
else
{
color_tool->sample_point =
gimp_image_add_sample_point_at_pos (display->image,
color_tool->sample_point_x,
color_tool->sample_point_y,
TRUE);
}
}
gimp_display_shell_selection_visibility (shell, GIMP_SELECTION_RESUME);
gimp_image_flush (display->image);
if (color_tool->sample_point)
gimp_display_shell_draw_sample_point (shell, color_tool->sample_point,
TRUE);
color_tool->moving_sample_point = FALSE;
color_tool->sample_point_x = -1;
color_tool->sample_point_y = -1;
}
else
{
gimp_draw_tool_stop (GIMP_DRAW_TOOL (tool));
}
}
static void
gimp_color_tool_motion (GimpTool *tool,
GimpCoords *coords,
guint32 time,
GdkModifierType state,
GimpDisplay *display)
{
GimpColorTool *color_tool = GIMP_COLOR_TOOL (tool);
GimpDisplayShell *shell = GIMP_DISPLAY_SHELL (display->shell);
if (! color_tool->enabled)
return;
if (color_tool->moving_sample_point)
{
gint tx, ty;
gboolean delete_point = FALSE;
gimp_draw_tool_pause (GIMP_DRAW_TOOL (tool));
gimp_display_shell_transform_xy (shell,
coords->x, coords->y,
&tx, &ty,
FALSE);
if (tx < 0 || tx > shell->disp_width ||
ty < 0 || ty > shell->disp_height)
{
color_tool->sample_point_x = -1;
color_tool->sample_point_y = -1;
delete_point = TRUE;
}
else
{
gint x, y, width, height;
color_tool->sample_point_x = floor (coords->x);
color_tool->sample_point_y = floor (coords->y);
gimp_display_shell_untransform_viewport (shell, &x, &y,
&width, &height);
if ((color_tool->sample_point_x < x ||
color_tool->sample_point_x > (x + width - 1) ||
color_tool->sample_point_y < y ||
color_tool->sample_point_y > (y + height - 1)))
{
delete_point = TRUE;
}
}
gimp_draw_tool_resume (GIMP_DRAW_TOOL (tool));
gimp_tool_pop_status (tool, display);
if (delete_point)
{
gimp_tool_push_status (tool, display,
color_tool->sample_point ?
_("Remove Sample Point") :
_("Cancel Sample Point"));
}
else
{
gimp_tool_push_status_coords (tool, display,
color_tool->sample_point ?
_("Move Sample Point: ") :
_("Add Sample Point: "),
color_tool->sample_point_x,
", ",
color_tool->sample_point_y);
}
}
else
{
gint off_x, off_y;
gimp_draw_tool_pause (GIMP_DRAW_TOOL (tool));
gimp_item_offsets (GIMP_ITEM (tool->drawable), &off_x, &off_y);
color_tool->center_x = coords->x - off_x;
color_tool->center_y = coords->y - off_y;
gimp_draw_tool_resume (GIMP_DRAW_TOOL (tool));
gimp_color_tool_pick (color_tool, GIMP_COLOR_PICK_STATE_UPDATE,
coords->x, coords->y);
}
}
static void
gimp_color_tool_oper_update (GimpTool *tool,
GimpCoords *coords,
GdkModifierType state,
gboolean proximity,
GimpDisplay *display)
{
GimpColorTool *color_tool = GIMP_COLOR_TOOL (tool);
GimpDisplayShell *shell = GIMP_DISPLAY_SHELL (display->shell);
GimpSamplePoint *sample_point = NULL;
if (color_tool->enabled &&
gimp_display_shell_get_show_sample_points (shell) && proximity)
{
gint snap_distance;
snap_distance =
GIMP_DISPLAY_CONFIG (display->image->gimp->config)->snap_distance;
sample_point =
gimp_image_find_sample_point (display->image,
coords->x, coords->y,
FUNSCALEX (shell, snap_distance),
FUNSCALEY (shell, snap_distance));
}
if (color_tool->sample_point && color_tool->sample_point != sample_point)
gimp_image_update_sample_point (shell->display->image,
color_tool->sample_point);
color_tool->sample_point = sample_point;
if (color_tool->sample_point)
gimp_display_shell_draw_sample_point (shell, color_tool->sample_point,
TRUE);
}
static void
gimp_color_tool_cursor_update (GimpTool *tool,
GimpCoords *coords,
GdkModifierType state,
GimpDisplay *display)
{
GimpColorTool *color_tool = GIMP_COLOR_TOOL (tool);
if (color_tool->enabled)
{
if (color_tool->sample_point)
{
gimp_tool_set_cursor (tool, display,
GIMP_CURSOR_MOUSE,
GIMP_TOOL_CURSOR_COLOR_PICKER,
GIMP_CURSOR_MODIFIER_MOVE);
}
else
{
GimpCursorType cursor = GIMP_CURSOR_BAD;
GimpCursorModifier modifier = GIMP_CURSOR_MODIFIER_NONE;
if (coords->x > 0 && coords->x < display->image->width &&
coords->y > 0 && coords->y < display->image->height &&
(color_tool->options->sample_merged ||
gimp_image_coords_in_active_drawable (display->image, coords)))
{
cursor = GIMP_CURSOR_MOUSE;
}
switch (color_tool->pick_mode)
{
case GIMP_COLOR_PICK_MODE_NONE:
modifier = GIMP_CURSOR_MODIFIER_NONE;
break;
case GIMP_COLOR_PICK_MODE_FOREGROUND:
modifier = GIMP_CURSOR_MODIFIER_FOREGROUND;
break;
case GIMP_COLOR_PICK_MODE_BACKGROUND:
modifier = GIMP_CURSOR_MODIFIER_BACKGROUND;
break;
case GIMP_COLOR_PICK_MODE_PALETTE:
modifier = GIMP_CURSOR_MODIFIER_PLUS;
break;
}
gimp_tool_set_cursor (tool, display,
cursor, GIMP_TOOL_CURSOR_COLOR_PICKER,
modifier);
}
return; /* don't chain up */
}
GIMP_TOOL_CLASS (parent_class)->cursor_update (tool, coords, state, display);
}
static void
gimp_color_tool_draw (GimpDrawTool *draw_tool)
{
GimpColorTool *color_tool = GIMP_COLOR_TOOL (draw_tool);
if (! color_tool->enabled)
return;
if (color_tool->moving_sample_point)
{
if (color_tool->sample_point_x != -1 &&
color_tool->sample_point_y != -1)
{
gimp_draw_tool_draw_line (draw_tool,
0, color_tool->sample_point_y + 0.5,
draw_tool->display->image->width,
color_tool->sample_point_y + 0.5,
FALSE);
gimp_draw_tool_draw_line (draw_tool,
color_tool->sample_point_x + 0.5, 0,
color_tool->sample_point_x + 0.5,
draw_tool->display->image->height,
FALSE);
}
}
else
{
if (color_tool->options->sample_average)
{
gdouble radius = color_tool->options->average_radius;
gimp_draw_tool_draw_rectangle (draw_tool,
FALSE,
color_tool->center_x - radius,
color_tool->center_y - radius,
2 * radius + 1,
2 * radius + 1,
TRUE);
}
}
}
static gboolean
gimp_color_tool_real_pick (GimpColorTool *color_tool,
gint x,
gint y,
GimpImageType *sample_type,
GimpRGB *color,
gint *color_index)
{
GimpTool *tool = GIMP_TOOL (color_tool);
g_return_val_if_fail (tool->display != NULL, FALSE);
g_return_val_if_fail (tool->drawable != NULL, FALSE);
return gimp_image_pick_color (tool->display->image, tool->drawable, x, y,
color_tool->options->sample_merged,
color_tool->options->sample_average,
color_tool->options->average_radius,
sample_type,
color,
color_index);
}
static void
gimp_color_tool_pick (GimpColorTool *tool,
GimpColorPickState pick_state,
gint x,
gint y)
{
GimpColorToolClass *klass;
GimpImageType sample_type;
GimpRGB color;
gint color_index;
klass = GIMP_COLOR_TOOL_GET_CLASS (tool);
if (klass->pick &&
klass->pick (tool, x, y, &sample_type, &color, &color_index))
{
g_signal_emit (tool, gimp_color_tool_signals[PICKED], 0,
pick_state, sample_type, &color, color_index);
}
}
void
gimp_color_tool_enable (GimpColorTool *color_tool,
GimpColorOptions *options)
{
GimpTool *tool;
g_return_if_fail (GIMP_IS_COLOR_TOOL (color_tool));
g_return_if_fail (GIMP_IS_COLOR_OPTIONS (options));
tool = GIMP_TOOL (color_tool);
if (gimp_tool_control_is_active (tool->control))
{
g_warning ("Trying to enable GimpColorTool while it is active.");
return;
}
if (color_tool->options)
g_object_unref (color_tool->options);
color_tool->options = g_object_ref (options);
color_tool->enabled = TRUE;
}
void
gimp_color_tool_disable (GimpColorTool *color_tool)
{
GimpTool *tool;
g_return_if_fail (GIMP_IS_COLOR_TOOL (color_tool));
tool = GIMP_TOOL (color_tool);
if (gimp_tool_control_is_active (tool->control))
{
g_warning ("Trying to disable GimpColorTool while it is active.");
return;
}
if (color_tool->options)
{
g_object_unref (color_tool->options);
color_tool->options = NULL;
}
color_tool->enabled = FALSE;
}
gboolean
gimp_color_tool_is_enabled (GimpColorTool *color_tool)
{
return color_tool->enabled;
}
void
gimp_color_tool_start_sample_point (GimpTool *tool,
GimpDisplay *display)
{
GimpColorTool *color_tool;
g_return_if_fail (GIMP_IS_COLOR_TOOL (tool));
g_return_if_fail (GIMP_IS_DISPLAY (display));
color_tool = GIMP_COLOR_TOOL (tool);
gimp_display_shell_selection_visibility (GIMP_DISPLAY_SHELL (display->shell),
GIMP_SELECTION_PAUSE);
tool->display = display;
gimp_tool_control_activate (tool->control);
if (color_tool->sample_point)
gimp_display_shell_draw_sample_point (GIMP_DISPLAY_SHELL (display->shell),
color_tool->sample_point, FALSE);
color_tool->sample_point = NULL;
color_tool->moving_sample_point = TRUE;
color_tool->sample_point_x = -1;
color_tool->sample_point_y = -1;
gimp_tool_set_cursor (tool, display,
GIMP_CURSOR_MOUSE,
GIMP_TOOL_CURSOR_COLOR_PICKER,
GIMP_CURSOR_MODIFIER_MOVE);
gimp_draw_tool_start (GIMP_DRAW_TOOL (tool), display);
}