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Gimp/app/tools/gimpcolortool.c
Michael Natterer a90619ff00 app: rename enum GimpColorPickMode to GimpColorPickTarget 
This is just some preparation for fixing issue #1805, but actually
"target" is a much better name so I went the full way and also changed
GUI labels and the color picker tool options config property
accordingly.

If anyone notices at all, how horrible is it to lose your saved pick
target...

(cherry picked from commit b140b283dc)
2018-07-15 14:39:03 +02:00

677 lines
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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 <https://www.gnu.org/licenses/>.
*/
#include "config.h"
#include <gegl.h>
#include <gtk/gtk.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-pick-item.h"
#include "core/gimpimage-sample-points.h"
#include "core/gimpmarshal.h"
#include "core/gimpsamplepoint.h"
#include "widgets/gimpcolormapeditor.h"
#include "widgets/gimpdialogfactory.h"
#include "widgets/gimpdockable.h"
#include "widgets/gimpdockcontainer.h"
#include "widgets/gimppaletteeditor.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 "gimpcoloroptions.h"
#include "gimpcolortool.h"
#include "gimpsamplepointtool.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_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_can_pick (GimpColorTool *color_tool,
const GimpCoords *coords,
GimpDisplay *display);
static gboolean gimp_color_tool_real_pick (GimpColorTool *color_tool,
const GimpCoords *coords,
GimpDisplay *display,
const Babl **sample_format,
gpointer pixel,
GimpRGB *color);
static void gimp_color_tool_real_picked (GimpColorTool *color_tool,
const GimpCoords *coords,
GimpDisplay *display,
GimpColorPickState pick_state,
const Babl *sample_format,
gpointer pixel,
const GimpRGB *color);
static gboolean gimp_color_tool_can_pick (GimpColorTool *tool,
const GimpCoords *coords,
GimpDisplay *display);
static void gimp_color_tool_pick (GimpColorTool *tool,
const GimpCoords *coords,
GimpDisplay *display,
GimpColorPickState pick_state);
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__POINTER_OBJECT_ENUM_POINTER_POINTER_BOXED,
G_TYPE_NONE, 6,
G_TYPE_POINTER,
GIMP_TYPE_DISPLAY,
GIMP_TYPE_COLOR_PICK_STATE,
G_TYPE_POINTER,
G_TYPE_POINTER,
GIMP_TYPE_RGB | G_SIGNAL_TYPE_STATIC_SCOPE);
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->can_pick = gimp_color_tool_real_can_pick;
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");
}
static void
gimp_color_tool_finalize (GObject *object)
{
GimpColorTool *color_tool = GIMP_COLOR_TOOL (object);
g_clear_object (&color_tool->options);
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);
if (color_tool->enabled)
{
if (color_tool->sample_point)
{
gimp_sample_point_tool_start_edit (tool, display,
color_tool->sample_point);
}
else if (gimp_color_tool_can_pick (color_tool, coords, display))
{
gimp_color_tool_pick (color_tool, coords, display,
GIMP_COLOR_PICK_STATE_START);
gimp_tool_control_activate (tool->control);
}
}
else
{
GIMP_TOOL_CLASS (parent_class)->button_press (tool, coords, time, state,
press_type, display);
}
}
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);
if (color_tool->enabled)
{
gimp_tool_control_halt (tool->control);
if (! color_tool->sample_point &&
gimp_color_tool_can_pick (color_tool, coords, display))
{
gimp_color_tool_pick (color_tool, coords, display,
GIMP_COLOR_PICK_STATE_END);
}
}
else
{
GIMP_TOOL_CLASS (parent_class)->button_release (tool, coords, time, state,
release_type, display);
}
}
static void
gimp_color_tool_motion (GimpTool *tool,
const GimpCoords *coords,
guint32 time,
GdkModifierType state,
GimpDisplay *display)
{
GimpColorTool *color_tool = GIMP_COLOR_TOOL (tool);
if (color_tool->enabled)
{
if (! color_tool->sample_point)
{
gimp_draw_tool_pause (GIMP_DRAW_TOOL (tool));
color_tool->can_pick = gimp_color_tool_can_pick (color_tool,
coords, display);
color_tool->center_x = coords->x;
color_tool->center_y = coords->y;
if (color_tool->can_pick)
{
gimp_color_tool_pick (color_tool, coords, display,
GIMP_COLOR_PICK_STATE_UPDATE);
}
gimp_draw_tool_resume (GIMP_DRAW_TOOL (tool));
}
}
else
{
GIMP_TOOL_CLASS (parent_class)->motion (tool, coords, time, state,
display);
}
}
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);
if (color_tool->enabled)
{
GimpDrawTool *draw_tool = GIMP_DRAW_TOOL (tool);
GimpDisplayShell *shell = gimp_display_get_shell (display);
GimpSamplePoint *sample_point = NULL;
gimp_draw_tool_pause (draw_tool);
if (! draw_tool->widget &&
gimp_draw_tool_is_active (draw_tool) &&
(draw_tool->display != display ||
! proximity))
{
gimp_draw_tool_stop (draw_tool);
}
if (gimp_display_shell_get_show_sample_points (shell) &&
proximity)
{
GimpImage *image = gimp_display_get_image (display);
gint snap_distance = display->config->snap_distance;
sample_point =
gimp_image_pick_sample_point (image,
coords->x, coords->y,
FUNSCALEX (shell, snap_distance),
FUNSCALEY (shell, snap_distance));
}
color_tool->sample_point = sample_point;
color_tool->can_pick = gimp_color_tool_can_pick (color_tool,
coords, display);
color_tool->center_x = coords->x;
color_tool->center_y = coords->y;
if (! draw_tool->widget &&
! gimp_draw_tool_is_active (draw_tool) &&
proximity)
{
gimp_draw_tool_start (draw_tool, display);
}
gimp_draw_tool_resume (draw_tool);
}
else
{
GIMP_TOOL_CLASS (parent_class)->oper_update (tool, coords, state,
proximity, display);
}
}
static void
gimp_color_tool_cursor_update (GimpTool *tool,
const 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
{
GimpCursorModifier modifier = GIMP_CURSOR_MODIFIER_BAD;
if (gimp_color_tool_can_pick (color_tool, coords, display))
{
switch (color_tool->pick_target)
{
case GIMP_COLOR_PICK_TARGET_NONE:
modifier = GIMP_CURSOR_MODIFIER_NONE;
break;
case GIMP_COLOR_PICK_TARGET_FOREGROUND:
modifier = GIMP_CURSOR_MODIFIER_FOREGROUND;
break;
case GIMP_COLOR_PICK_TARGET_BACKGROUND:
modifier = GIMP_CURSOR_MODIFIER_BACKGROUND;
break;
case GIMP_COLOR_PICK_TARGET_PALETTE:
modifier = GIMP_CURSOR_MODIFIER_PLUS;
break;
}
}
gimp_tool_set_cursor (tool, display,
GIMP_CURSOR_COLOR_PICKER,
GIMP_TOOL_CURSOR_COLOR_PICKER,
modifier);
}
}
else
{
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);
GIMP_DRAW_TOOL_CLASS (parent_class)->draw (draw_tool);
if (color_tool->enabled)
{
if (color_tool->sample_point)
{
GimpImage *image = gimp_display_get_image (draw_tool->display);
GimpCanvasItem *item;
gint index;
gint x;
gint y;
gimp_sample_point_get_position (color_tool->sample_point, &x, &y);
index = g_list_index (gimp_image_get_sample_points (image),
color_tool->sample_point) + 1;
item = gimp_draw_tool_add_sample_point (draw_tool, x, y, index);
gimp_canvas_item_set_highlight (item, TRUE);
}
else if (color_tool->can_pick && color_tool->options->sample_average)
{
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_can_pick (GimpColorTool *color_tool,
const GimpCoords *coords,
GimpDisplay *display)
{
GimpImage *image = gimp_display_get_image (display);
return gimp_image_coords_in_active_pickable (image, coords,
color_tool->options->sample_merged,
FALSE);
}
static gboolean
gimp_color_tool_real_pick (GimpColorTool *color_tool,
const GimpCoords *coords,
GimpDisplay *display,
const Babl **sample_format,
gpointer pixel,
GimpRGB *color)
{
GimpImage *image = gimp_display_get_image (display);
GimpDrawable *drawable = gimp_image_get_active_drawable (image);
g_return_val_if_fail (drawable != NULL, FALSE);
return gimp_image_pick_color (image, drawable,
coords->x, coords->y,
color_tool->options->sample_merged,
color_tool->options->sample_average,
color_tool->options->average_radius,
sample_format,
pixel,
color);
}
static void
gimp_color_tool_real_picked (GimpColorTool *color_tool,
const GimpCoords *coords,
GimpDisplay *display,
GimpColorPickState pick_state,
const Babl *sample_format,
gpointer pixel,
const GimpRGB *color)
{
GimpTool *tool = GIMP_TOOL (color_tool);
GimpDisplayShell *shell = gimp_display_get_shell (display);
GimpImageWindow *image_window;
GimpDialogFactory *dialog_factory;
GimpContext *context;
image_window = gimp_display_shell_get_window (shell);
dialog_factory = gimp_dock_container_get_dialog_factory (GIMP_DOCK_CONTAINER (image_window));
/* use this tool's own options here (NOT color_tool->options) */
context = GIMP_CONTEXT (gimp_tool_get_options (tool));
if (color_tool->pick_target == GIMP_COLOR_PICK_TARGET_FOREGROUND ||
color_tool->pick_target == GIMP_COLOR_PICK_TARGET_BACKGROUND)
{
GtkWidget *widget;
if (babl_format_is_palette (sample_format))
{
widget = gimp_dialog_factory_find_widget (dialog_factory,
"gimp-indexed-palette");
if (widget)
{
GtkWidget *editor = gtk_bin_get_child (GTK_BIN (widget));
guchar *index = pixel;
gimp_colormap_editor_set_index (GIMP_COLORMAP_EDITOR (editor),
*index, NULL);
}
}
widget = gimp_dialog_factory_find_widget (dialog_factory,
"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_target)
{
case GIMP_COLOR_PICK_TARGET_NONE:
break;
case GIMP_COLOR_PICK_TARGET_FOREGROUND:
gimp_context_set_foreground (context, color);
break;
case GIMP_COLOR_PICK_TARGET_BACKGROUND:
gimp_context_set_background (context, color);
break;
case GIMP_COLOR_PICK_TARGET_PALETTE:
{
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 (display->gimp)),
display->gimp,
dialog_factory,
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_widget_blink_cancel (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 gboolean
gimp_color_tool_can_pick (GimpColorTool *tool,
const GimpCoords *coords,
GimpDisplay *display)
{
GimpColorToolClass *klass;
klass = GIMP_COLOR_TOOL_GET_CLASS (tool);
return klass->can_pick && klass->can_pick (tool, coords, display);
}
static void
gimp_color_tool_pick (GimpColorTool *tool,
const GimpCoords *coords,
GimpDisplay *display,
GimpColorPickState pick_state)
{
GimpColorToolClass *klass;
const Babl *sample_format;
guchar pixel[32];
GimpRGB color;
klass = GIMP_COLOR_TOOL_GET_CLASS (tool);
if (klass->pick &&
klass->pick (tool, coords, display, &sample_format, pixel, &color))
{
g_signal_emit (tool, gimp_color_tool_signals[PICKED], 0,
coords, display, pick_state,
sample_format, pixel, &color);
}
}
/* 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;
}
g_set_object (&color_tool->options, options);
/* color picking doesn't snap, see bug #768058 */
color_tool->saved_snap_to = gimp_tool_control_get_snap_to (tool->control);
gimp_tool_control_set_snap_to (tool->control, FALSE);
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;
}
g_clear_object (&color_tool->options);
gimp_tool_control_set_snap_to (tool->control, color_tool->saved_snap_to);
color_tool->saved_snap_to = FALSE;
color_tool->enabled = FALSE;
}
gboolean
gimp_color_tool_is_enabled (GimpColorTool *color_tool)
{
return color_tool->enabled;
}
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