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gimp/app/tools/gimpcolortool.c

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/* GIMP - The GNU 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 3 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, see <http://www.gnu.org/licenses/>.
*/
#include "config.h"
#include <gegl.h>
#include <gtk/gtk.h>
#include "libgimpmath/gimpmath.h"
#include "libgimpcolor/gimpcolor.h"
#include "libgimpwidgets/gimpwidgets.h"
#include "tools-types.h"
#include "config/gimpdisplayconfig.h"
#include "core/gimp.h"
#include "core/gimpdata.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 "core/gimpsamplepoint.h"
#include "widgets/gimpcolormapeditor.h"
#include "widgets/gimpdialogfactory.h"
#include "widgets/gimpdockable.h"
#include "widgets/gimppaletteeditor.h"
#include "widgets/gimpsessioninfo.h"
#include "widgets/gimpwidgets-utils.h"
#include "widgets/gimpwindowstrategy.h"
#include "display/gimpcanvasitem.h"
#include "display/gimpdisplay.h"
#include "display/gimpdisplayshell.h"
#include "display/gimpdisplayshell-appearance.h"
#include "display/gimpdisplayshell-selection.h"
#include "display/gimpdisplayshell-transform.h"
#include "gimpcoloroptions.h"
#include "gimpcolortool.h"
#include "gimptoolcontrol.h"
#include "gimp-intl.h"
#define SAMPLE_POINT_POSITION_INVALID G_MININT
enum
{
PICKED,
LAST_SIGNAL
};
/* local function prototypes */
static void gimp_color_tool_finalize (GObject *object);
static void gimp_color_tool_button_press (GimpTool *tool,
const GimpCoords *coords,
guint32 time,
GdkModifierType state,
GimpButtonPressType press_type,
GimpDisplay *display);
static void gimp_color_tool_button_release (GimpTool *tool,
const GimpCoords *coords,
guint32 time,
GdkModifierType state,
GimpButtonReleaseType release_type,
GimpDisplay *display);
static void gimp_color_tool_motion (GimpTool *tool,
const GimpCoords *coords,
guint32 time,
GdkModifierType state,
GimpDisplay *display);
static void gimp_color_tool_oper_update (GimpTool *tool,
const GimpCoords *coords,
GdkModifierType state,
gboolean proximity,
GimpDisplay *display);
static void gimp_color_tool_cursor_update (GimpTool *tool,
const 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,
const Babl **sample_format,
GimpRGB *color,
gint *color_index);
static void gimp_color_tool_real_picked (GimpColorTool *color_tool,
GimpColorPickState pick_state,
gdouble x,
gdouble y,
const Babl *sample_format,
const 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_DOUBLE_DOUBLE_POINTER_BOXED_INT,
G_TYPE_NONE, 6,
GIMP_TYPE_COLOR_PICK_STATE,
G_TYPE_DOUBLE,
G_TYPE_DOUBLE,
G_TYPE_POINTER,
GIMP_TYPE_RGB | G_SIGNAL_TYPE_STATIC_SCOPE,
G_TYPE_INT);
object_class->finalize = gimp_color_tool_finalize;
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 = gimp_color_tool_real_picked;
}
static void
gimp_color_tool_init (GimpColorTool *color_tool)
{
GimpTool *tool = GIMP_TOOL (color_tool);
gimp_tool_control_set_action_size (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 = SAMPLE_POINT_POSITION_INVALID;
color_tool->sample_point_y = SAMPLE_POINT_POSITION_INVALID;
}
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_button_press (GimpTool *tool,
const GimpCoords *coords,
guint32 time,
GdkModifierType state,
GimpButtonPressType press_type,
GimpDisplay *display)
{
GimpColorTool *color_tool = GIMP_COLOR_TOOL (tool);
GimpDisplayShell *shell = gimp_display_get_shell (display);
/* Chain up to activate the tool */
GIMP_TOOL_CLASS (parent_class)->button_press (tool, coords, time, state,
press_type, display);
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_tool_control_set_scroll_lock (tool->control, TRUE);
gimp_display_shell_selection_pause (shell);
if (! gimp_draw_tool_is_active (GIMP_DRAW_TOOL (tool)))
gimp_draw_tool_start (GIMP_DRAW_TOOL (tool), display);
gimp_tool_push_status_coords (tool, display,
gimp_tool_control_get_precision (tool->control),
_("Move Sample Point: "),
color_tool->sample_point_x,
", ",
color_tool->sample_point_y,
NULL);
}
else
{
color_tool->center_x = coords->x;
color_tool->center_y = coords->y;
gimp_draw_tool_start (GIMP_DRAW_TOOL (tool), display);
gimp_color_tool_pick (color_tool, GIMP_COLOR_PICK_STATE_START,
coords->x, coords->y);
}
}
static void
gimp_color_tool_button_release (GimpTool *tool,
const GimpCoords *coords,
guint32 time,
GdkModifierType state,
GimpButtonReleaseType release_type,
GimpDisplay *display)
{
GimpColorTool *color_tool = GIMP_COLOR_TOOL (tool);
GimpDisplayShell *shell = gimp_display_get_shell (display);
/* Chain up to halt the tool */
GIMP_TOOL_CLASS (parent_class)->button_release (tool, coords, time, state,
release_type, display);
if (! color_tool->enabled)
return;
if (color_tool->moving_sample_point)
{
GimpImage *image = gimp_display_get_image (display);
gint width = gimp_image_get_width (image);
gint height = gimp_image_get_height (image);
gimp_tool_pop_status (tool, display);
gimp_tool_control_set_scroll_lock (tool->control, FALSE);
gimp_draw_tool_stop (GIMP_DRAW_TOOL (tool));
if (release_type == GIMP_BUTTON_RELEASE_CANCEL)
{
color_tool->moving_sample_point = FALSE;
color_tool->sample_point_x = SAMPLE_POINT_POSITION_INVALID;
color_tool->sample_point_y = SAMPLE_POINT_POSITION_INVALID;
gimp_display_shell_selection_resume (shell);
return;
}
if (color_tool->sample_point_x == SAMPLE_POINT_POSITION_INVALID ||
color_tool->sample_point_x < 0 ||
color_tool->sample_point_x >= width ||
color_tool->sample_point_y == SAMPLE_POINT_POSITION_INVALID ||
color_tool->sample_point_y < 0 ||
color_tool->sample_point_y >= height)
{
if (color_tool->sample_point)
{
gimp_image_remove_sample_point (image,
color_tool->sample_point, TRUE);
color_tool->sample_point = NULL;
}
}
else
{
if (color_tool->sample_point)
{
gimp_image_move_sample_point (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 (image,
color_tool->sample_point_x,
color_tool->sample_point_y,
TRUE);
}
}
gimp_display_shell_selection_resume (shell);
gimp_image_flush (image);
color_tool->moving_sample_point = FALSE;
color_tool->sample_point_x = SAMPLE_POINT_POSITION_INVALID;
color_tool->sample_point_y = SAMPLE_POINT_POSITION_INVALID;
if (color_tool->sample_point)
gimp_draw_tool_start (GIMP_DRAW_TOOL (tool), display);
}
else
{
gimp_draw_tool_stop (GIMP_DRAW_TOOL (tool));
gimp_color_tool_pick (color_tool, GIMP_COLOR_PICK_STATE_END,
coords->x, coords->y);
}
}
static void
gimp_color_tool_motion (GimpTool *tool,
const GimpCoords *coords,
guint32 time,
GdkModifierType state,
GimpDisplay *display)
{
GimpColorTool *color_tool = GIMP_COLOR_TOOL (tool);
GimpDisplayShell *shell = gimp_display_get_shell (display);
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);
if (tx < 0 || tx > shell->disp_width ||
ty < 0 || ty > shell->disp_height)
{
color_tool->sample_point_x = SAMPLE_POINT_POSITION_INVALID;
color_tool->sample_point_y = SAMPLE_POINT_POSITION_INVALID;
delete_point = TRUE;
}
else
{
GimpImage *image = gimp_display_get_image (display);
gint width = gimp_image_get_width (image);
gint height = gimp_image_get_height (image);
color_tool->sample_point_x = floor (coords->x);
color_tool->sample_point_y = floor (coords->y);
if (color_tool->sample_point_x < 0 ||
color_tool->sample_point_x >= width ||
color_tool->sample_point_y < 0 ||
color_tool->sample_point_y >= height)
{
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,
gimp_tool_control_get_precision (tool->control),
color_tool->sample_point ?
_("Move Sample Point: ") :
_("Add Sample Point: "),
color_tool->sample_point_x,
", ",
color_tool->sample_point_y,
NULL);
}
}
else
{
gimp_draw_tool_pause (GIMP_DRAW_TOOL (tool));
color_tool->center_x = coords->x;
color_tool->center_y = coords->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,
const GimpCoords *coords,
GdkModifierType state,
gboolean proximity,
GimpDisplay *display)
{
GimpColorTool *color_tool = GIMP_COLOR_TOOL (tool);
GimpDisplayShell *shell = gimp_display_get_shell (display);
GimpImage *image = gimp_display_get_image (display);
GimpSamplePoint *sample_point = NULL;
if (color_tool->enabled &&
gimp_display_shell_get_show_sample_points (shell) &&
proximity)
{
gint snap_distance = display->config->snap_distance;
sample_point =
gimp_image_find_sample_point (image,
coords->x, coords->y,
FUNSCALEX (shell, snap_distance),
FUNSCALEY (shell, snap_distance));
}
if (color_tool->sample_point != sample_point)
{
GimpDrawTool *draw_tool = GIMP_DRAW_TOOL (tool);
gimp_draw_tool_pause (draw_tool);
if (gimp_draw_tool_is_active (draw_tool) &&
draw_tool->display != display)
gimp_draw_tool_stop (draw_tool);
color_tool->sample_point = sample_point;
if (! gimp_draw_tool_is_active (draw_tool))
gimp_draw_tool_start (draw_tool, display);
gimp_draw_tool_resume (draw_tool);
}
}
static void
gimp_color_tool_cursor_update (GimpTool *tool,
const GimpCoords *coords,
GdkModifierType state,
GimpDisplay *display)
{
GimpColorTool *color_tool = GIMP_COLOR_TOOL (tool);
GimpImage *image = gimp_display_get_image (display);
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
{
GimpCursorModifier modifier = GIMP_CURSOR_MODIFIER_BAD;
if (gimp_image_coords_in_active_pickable (image, coords,
color_tool->options->sample_merged,
FALSE))
{
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,
GIMP_CURSOR_COLOR_PICKER,
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)
{
if (color_tool->sample_point)
{
GimpImage *image = gimp_display_get_image (draw_tool->display);
GimpCanvasItem *item;
gint index;
index = g_list_index (gimp_image_get_sample_points (image),
color_tool->sample_point) + 1;
item = gimp_draw_tool_add_sample_point (draw_tool,
color_tool->sample_point->x,
color_tool->sample_point->y,
index);
gimp_canvas_item_set_highlight (item, TRUE);
}
if (color_tool->moving_sample_point)
{
if (color_tool->sample_point_x != SAMPLE_POINT_POSITION_INVALID &&
color_tool->sample_point_y != SAMPLE_POINT_POSITION_INVALID)
{
gimp_draw_tool_add_crosshair (draw_tool,
color_tool->sample_point_x,
color_tool->sample_point_y);
}
}
else if (color_tool->options->sample_average &&
gimp_tool_control_is_active (GIMP_TOOL (draw_tool)->control))
{
gdouble radius = color_tool->options->average_radius;
gimp_draw_tool_add_rectangle (draw_tool,
FALSE,
color_tool->center_x - radius,
color_tool->center_y - radius,
2 * radius + 1,
2 * radius + 1);
}
}
}
static gboolean
gimp_color_tool_real_pick (GimpColorTool *color_tool,
gint x,
gint y,
const Babl **sample_format,
GimpRGB *color,
gint *color_index)
{
GimpTool *tool = GIMP_TOOL (color_tool);
GimpImage *image = gimp_display_get_image (tool->display);
g_return_val_if_fail (tool->display != NULL, FALSE);
g_return_val_if_fail (tool->drawable != NULL, FALSE);
return gimp_image_pick_color (image, tool->drawable, x, y,
color_tool->options->sample_merged,
color_tool->options->sample_average,
color_tool->options->average_radius,
sample_format,
color,
color_index);
}
static void
gimp_color_tool_real_picked (GimpColorTool *color_tool,
GimpColorPickState pick_state,
gdouble x,
gdouble y,
const Babl *sample_format,
const GimpRGB *color,
gint color_index)
{
GimpTool *tool = GIMP_TOOL (color_tool);
GimpContext *context;
/* use this tool's own options here (NOT color_tool->options) */
context = GIMP_CONTEXT (gimp_tool_get_options (tool));
if (color_tool->pick_mode == GIMP_COLOR_PICK_MODE_FOREGROUND ||
color_tool->pick_mode == GIMP_COLOR_PICK_MODE_BACKGROUND)
{
GtkWidget *widget;
if (babl_format_is_palette (sample_format))
{
widget = gimp_dialog_factory_find_widget (gimp_dialog_factory_get_singleton (),
"gimp-indexed-palette");
if (widget)
{
GtkWidget *editor = gtk_bin_get_child (GTK_BIN (widget));
gimp_colormap_editor_set_index (GIMP_COLORMAP_EDITOR (editor),
color_index, NULL);
}
}
widget = gimp_dialog_factory_find_widget (gimp_dialog_factory_get_singleton (),
"gimp-palette-editor");
if (widget)
{
GtkWidget *editor = gtk_bin_get_child (GTK_BIN (widget));
gint index;
index = gimp_palette_editor_get_index (GIMP_PALETTE_EDITOR (editor),
color);
if (index != -1)
gimp_palette_editor_set_index (GIMP_PALETTE_EDITOR (editor),
index, NULL);
}
}
switch (color_tool->pick_mode)
{
case GIMP_COLOR_PICK_MODE_NONE:
break;
case GIMP_COLOR_PICK_MODE_FOREGROUND:
gimp_context_set_foreground (context, color);
break;
case GIMP_COLOR_PICK_MODE_BACKGROUND:
gimp_context_set_background (context, color);
break;
case GIMP_COLOR_PICK_MODE_PALETTE:
{
GimpDisplayShell *shell = gimp_display_get_shell (tool->display);
GdkScreen *screen = gtk_widget_get_screen (GTK_WIDGET (shell));
gint monitor = gimp_widget_get_monitor (GTK_WIDGET (shell));
GtkWidget *dockable;
dockable =
gimp_window_strategy_show_dockable_dialog (GIMP_WINDOW_STRATEGY (gimp_get_window_strategy (tool->display->gimp)),
tool->display->gimp,
gimp_dialog_factory_get_singleton (),
screen,
monitor,
"gimp-palette-editor");
if (dockable)
{
GtkWidget *palette_editor;
GimpData *data;
/* don't blink like mad when updating */
if (pick_state != GIMP_COLOR_PICK_STATE_START)
gimp_dockable_blink_cancel (GIMP_DOCKABLE (dockable));
palette_editor = gtk_bin_get_child (GTK_BIN (dockable));
data = gimp_data_editor_get_data (GIMP_DATA_EDITOR (palette_editor));
if (! data)
{
data = GIMP_DATA (gimp_context_get_palette (context));
gimp_data_editor_set_data (GIMP_DATA_EDITOR (palette_editor),
data);
}
gimp_palette_editor_pick_color (GIMP_PALETTE_EDITOR (palette_editor),
color, pick_state);
}
}
break;
}
}
static void
gimp_color_tool_pick (GimpColorTool *tool,
GimpColorPickState pick_state,
gint x,
gint y)
{
GimpColorToolClass *klass;
const Babl *sample_format;
GimpRGB color;
gint color_index;
klass = GIMP_COLOR_TOOL_GET_CLASS (tool);
if (klass->pick &&
klass->pick (tool, x, y, &sample_format, &color, &color_index))
{
g_signal_emit (tool, gimp_color_tool_signals[PICKED], 0,
pick_state,
(gdouble) x, (gdouble) y,
sample_format, &color, color_index);
}
}
/* public functions */
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_pause (gimp_display_get_shell (display));
tool->display = display;
gimp_tool_control_activate (tool->control);
gimp_tool_control_set_scroll_lock (tool->control, TRUE);
if (gimp_draw_tool_is_active (GIMP_DRAW_TOOL (tool)))
gimp_draw_tool_stop (GIMP_DRAW_TOOL (tool));
color_tool->sample_point = NULL;
color_tool->moving_sample_point = TRUE;
color_tool->sample_point_x = SAMPLE_POINT_POSITION_INVALID;
color_tool->sample_point_y = SAMPLE_POINT_POSITION_INVALID;
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);
}
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