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gimp/app/widgets/gimpsamplepointeditor.c

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/* GIMP - The GNU Image Manipulation Program
* Copyright (C) 1995 Spencer Kimball and Peter Mattis
*
* gimpsamplepointeditor.c
* Copyright (C) 2005-2016 Michael Natterer <mitch@gimp.org>
*
* 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 "libgimpbase/gimpbase.h"
#include "libgimpwidgets/gimpwidgets.h"
#include "widgets-types.h"
#include "config/gimpcoreconfig.h"
#include "core/gimp.h"
#include "core/gimpimage.h"
#include "core/gimpimage-pick-color.h"
#include "core/gimpimage-sample-points.h"
#include "core/gimpsamplepoint.h"
#include "gimpcolorframe.h"
#include "gimpmenufactory.h"
#include "gimpsamplepointeditor.h"
#include "gimpwidgets-utils.h"
#include "gimp-intl.h"
enum
{
PROP_0,
PROP_SAMPLE_MERGED
};
static void gimp_sample_point_editor_constructed (GObject *object);
static void gimp_sample_point_editor_dispose (GObject *object);
static void gimp_sample_point_editor_set_property (GObject *object,
guint property_id,
const GValue *value,
GParamSpec *pspec);
static void gimp_sample_point_editor_get_property (GObject *object,
guint property_id,
GValue *value,
GParamSpec *pspec);
static void gimp_sample_point_editor_style_updated (GtkWidget *widget);
static void gimp_sample_point_editor_set_image (GimpImageEditor *editor,
GimpImage *image);
static void gimp_sample_point_editor_point_added (GimpImage *image,
GimpSamplePoint *sample_point,
GimpSamplePointEditor *editor);
static void gimp_sample_point_editor_point_removed (GimpImage *image,
GimpSamplePoint *sample_point,
GimpSamplePointEditor *editor);
static void gimp_sample_point_editor_point_moved (GimpImage *image,
GimpSamplePoint *sample_point,
GimpSamplePointEditor *editor);
static void gimp_sample_point_editor_proj_update (GimpImage *image,
gboolean now,
gint x,
gint y,
gint width,
gint height,
GimpSamplePointEditor *editor);
static void gimp_sample_point_editor_points_changed (GimpSamplePointEditor *editor);
static void gimp_sample_point_editor_dirty (GimpSamplePointEditor *editor,
gint index);
static gboolean gimp_sample_point_editor_update (GimpSamplePointEditor *editor);
static void gimp_sample_point_editor_mode_notify (GimpColorFrame *frame,
const GParamSpec *pspec,
GimpSamplePointEditor *editor);
G_DEFINE_TYPE (GimpSamplePointEditor, gimp_sample_point_editor,
GIMP_TYPE_IMAGE_EDITOR)
#define parent_class gimp_sample_point_editor_parent_class
static void
gimp_sample_point_editor_class_init (GimpSamplePointEditorClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (klass);
GimpImageEditorClass *image_editor_class = GIMP_IMAGE_EDITOR_CLASS (klass);
object_class->constructed = gimp_sample_point_editor_constructed;
object_class->dispose = gimp_sample_point_editor_dispose;
object_class->get_property = gimp_sample_point_editor_get_property;
object_class->set_property = gimp_sample_point_editor_set_property;
widget_class->style_updated = gimp_sample_point_editor_style_updated;
image_editor_class->set_image = gimp_sample_point_editor_set_image;
g_object_class_install_property (object_class, PROP_SAMPLE_MERGED,
g_param_spec_boolean ("sample-merged",
NULL, NULL,
TRUE,
GIMP_PARAM_READWRITE |
G_PARAM_CONSTRUCT));
}
static void
gimp_sample_point_editor_init (GimpSamplePointEditor *editor)
{
GtkWidget *scrolled_window;
GtkWidget *viewport;
GtkWidget *vbox;
gint content_spacing;
editor->sample_merged = TRUE;
gtk_widget_style_get (GTK_WIDGET (editor),
"content-spacing", &content_spacing,
NULL);
scrolled_window = gtk_scrolled_window_new (NULL, NULL);
gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (scrolled_window),
GTK_POLICY_NEVER,
GTK_POLICY_AUTOMATIC);
gtk_scrolled_window_set_shadow_type (GTK_SCROLLED_WINDOW (scrolled_window),
GTK_SHADOW_NONE);
gtk_box_pack_start (GTK_BOX (editor), scrolled_window, TRUE, TRUE, 0);
gtk_widget_show (scrolled_window);
viewport = gtk_viewport_new (NULL, NULL);
gtk_viewport_set_shadow_type (GTK_VIEWPORT (viewport), GTK_SHADOW_NONE);
gtk_container_add (GTK_CONTAINER (scrolled_window), viewport);
gtk_widget_show (viewport);
vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 0);
gtk_container_add (GTK_CONTAINER (viewport), vbox);
gtk_widget_show (vbox);
editor->empty_icon = gtk_image_new_from_icon_name (GIMP_ICON_SAMPLE_POINT,
GTK_ICON_SIZE_BUTTON);
gtk_box_pack_start (GTK_BOX (vbox), editor->empty_icon, TRUE, TRUE, 0);
gtk_widget_show (editor->empty_icon);
editor->empty_label = gtk_label_new (_("This image\nhas no\nsample points"));
gtk_label_set_justify (GTK_LABEL (editor->empty_label), GTK_JUSTIFY_CENTER);
gimp_label_set_attributes (GTK_LABEL (editor->empty_label),
PANGO_ATTR_STYLE, PANGO_STYLE_ITALIC,
-1);
gtk_box_pack_start (GTK_BOX (vbox), editor->empty_label, TRUE, TRUE, 0);
editor->grid = gtk_grid_new ();
gtk_grid_set_row_spacing (GTK_GRID (editor->grid), content_spacing);
gtk_grid_set_column_spacing (GTK_GRID (editor->grid), content_spacing);
gtk_box_pack_start (GTK_BOX (vbox), editor->grid, FALSE, FALSE, 0);
gtk_widget_show (editor->grid);
}
static void
gimp_sample_point_editor_constructed (GObject *object)
{
G_OBJECT_CLASS (parent_class)->constructed (object);
}
static void
gimp_sample_point_editor_dispose (GObject *object)
{
GimpSamplePointEditor *editor = GIMP_SAMPLE_POINT_EDITOR (object);
g_clear_pointer (&editor->color_frames, g_free);
if (editor->dirty_idle_id)
{
g_source_remove (editor->dirty_idle_id);
editor->dirty_idle_id = 0;
}
G_OBJECT_CLASS (parent_class)->dispose (object);
}
static void
gimp_sample_point_editor_set_property (GObject *object,
guint property_id,
const GValue *value,
GParamSpec *pspec)
{
GimpSamplePointEditor *editor = GIMP_SAMPLE_POINT_EDITOR (object);
switch (property_id)
{
case PROP_SAMPLE_MERGED:
gimp_sample_point_editor_set_sample_merged (editor,
g_value_get_boolean (value));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
break;
}
}
static void
gimp_sample_point_editor_get_property (GObject *object,
guint property_id,
GValue *value,
GParamSpec *pspec)
{
GimpSamplePointEditor *editor = GIMP_SAMPLE_POINT_EDITOR (object);
switch (property_id)
{
case PROP_SAMPLE_MERGED:
g_value_set_boolean (value, editor->sample_merged);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
break;
}
}
static void
gimp_sample_point_editor_style_updated (GtkWidget *widget)
{
GimpSamplePointEditor *editor = GIMP_SAMPLE_POINT_EDITOR (widget);
GTK_WIDGET_CLASS (parent_class)->style_updated (widget);
if (editor->grid)
{
gint content_spacing;
gtk_widget_style_get (widget,
"content-spacing", &content_spacing,
NULL);
gtk_grid_set_row_spacing (GTK_GRID (editor->grid), content_spacing);
gtk_grid_set_column_spacing (GTK_GRID (editor->grid), content_spacing);
}
}
static void
gimp_sample_point_editor_set_image (GimpImageEditor *image_editor,
GimpImage *image)
{
GimpSamplePointEditor *editor = GIMP_SAMPLE_POINT_EDITOR (image_editor);
if (image_editor->image)
{
g_signal_handlers_disconnect_by_func (image_editor->image,
gimp_sample_point_editor_point_added,
editor);
g_signal_handlers_disconnect_by_func (image_editor->image,
gimp_sample_point_editor_point_removed,
editor);
g_signal_handlers_disconnect_by_func (image_editor->image,
gimp_sample_point_editor_point_moved,
editor);
g_signal_handlers_disconnect_by_func (gimp_image_get_projection (image_editor->image),
gimp_sample_point_editor_proj_update,
editor);
}
GIMP_IMAGE_EDITOR_CLASS (parent_class)->set_image (image_editor, image);
if (image)
{
g_signal_connect (image, "sample-point-added",
G_CALLBACK (gimp_sample_point_editor_point_added),
editor);
g_signal_connect (image, "sample-point-removed",
G_CALLBACK (gimp_sample_point_editor_point_removed),
editor);
g_signal_connect (image, "sample-point-moved",
G_CALLBACK (gimp_sample_point_editor_point_moved),
editor);
g_signal_connect (gimp_image_get_projection (image), "update",
G_CALLBACK (gimp_sample_point_editor_proj_update),
editor);
}
gtk_widget_set_visible (editor->empty_icon,
image_editor->image == NULL);
gimp_sample_point_editor_points_changed (editor);
}
/* public functions */
GtkWidget *
gimp_sample_point_editor_new (GimpMenuFactory *menu_factory)
{
g_return_val_if_fail (GIMP_IS_MENU_FACTORY (menu_factory), NULL);
return g_object_new (GIMP_TYPE_SAMPLE_POINT_EDITOR,
"menu-factory", menu_factory,
"menu-identifier", "<SamplePoints>",
"ui-path", "/sample-points-popup",
NULL);
}
void
gimp_sample_point_editor_set_sample_merged (GimpSamplePointEditor *editor,
gboolean sample_merged)
{
g_return_if_fail (GIMP_IS_SAMPLE_POINT_EDITOR (editor));
sample_merged = sample_merged ? TRUE : FALSE;
if (editor->sample_merged != sample_merged)
{
editor->sample_merged = sample_merged;
gimp_sample_point_editor_dirty (editor, -1);
g_object_notify (G_OBJECT (editor), "sample-merged");
}
}
gboolean
gimp_sample_point_editor_get_sample_merged (GimpSamplePointEditor *editor)
{
g_return_val_if_fail (GIMP_IS_SAMPLE_POINT_EDITOR (editor), FALSE);
return editor->sample_merged;
}
/* private functions */
static void
gimp_sample_point_editor_point_added (GimpImage *image,
GimpSamplePoint *sample_point,
GimpSamplePointEditor *editor)
{
gimp_sample_point_editor_points_changed (editor);
}
static void
gimp_sample_point_editor_point_removed (GimpImage *image,
GimpSamplePoint *sample_point,
GimpSamplePointEditor *editor)
{
gimp_sample_point_editor_points_changed (editor);
}
static void
gimp_sample_point_editor_point_moved (GimpImage *image,
GimpSamplePoint *sample_point,
GimpSamplePointEditor *editor)
{
gint i = g_list_index (gimp_image_get_sample_points (image), sample_point);
gimp_sample_point_editor_dirty (editor, i);
}
static void
gimp_sample_point_editor_proj_update (GimpImage *image,
gboolean now,
gint x,
gint y,
gint width,
gint height,
GimpSamplePointEditor *editor)
{
GimpImageEditor *image_editor = GIMP_IMAGE_EDITOR (editor);
GList *sample_points;
gint n_points = 0;
GList *list;
gint i;
sample_points = gimp_image_get_sample_points (image_editor->image);
n_points = MIN (editor->n_color_frames, g_list_length (sample_points));
for (i = 0, list = sample_points;
i < n_points;
i++, list = g_list_next (list))
{
GimpSamplePoint *sample_point = list->data;
gint sp_x;
gint sp_y;
gimp_sample_point_get_position (sample_point, &sp_x, &sp_y);
if (sp_x >= x && sp_x < (x + width) &&
sp_y >= y && sp_y < (y + height))
{
gimp_sample_point_editor_dirty (editor, i);
}
}
}
static void
gimp_sample_point_editor_points_changed (GimpSamplePointEditor *editor)
{
GimpImageEditor *image_editor = GIMP_IMAGE_EDITOR (editor);
GList *sample_points;
gint n_points = 0;
gint i;
if (image_editor->image)
{
sample_points = gimp_image_get_sample_points (image_editor->image);
n_points = g_list_length (sample_points);
}
gtk_widget_set_visible (editor->empty_label,
image_editor->image && n_points == 0);
/* Keep that many color frames around so they remember their color
* model. Let's hope nobody uses more and notices they get reset to
* "pixel". See https://gitlab.gnome.org/GNOME/gimp/issues/1805
*/
#define RANDOM_MAGIC 16
if (n_points < editor->n_color_frames &&
n_points < RANDOM_MAGIC &&
editor->n_color_frames > RANDOM_MAGIC)
{
for (i = RANDOM_MAGIC; i < editor->n_color_frames; i++)
{
gtk_widget_destroy (editor->color_frames[i]);
}
editor->color_frames = g_renew (GtkWidget *, editor->color_frames,
RANDOM_MAGIC);
editor->n_color_frames = RANDOM_MAGIC;
}
else if (n_points > editor->n_color_frames)
{
GimpColorConfig *config;
config = image_editor->image->gimp->config->color_management;
editor->color_frames = g_renew (GtkWidget *, editor->color_frames,
n_points);
for (i = editor->n_color_frames; i < n_points; i++)
{
gint row = i / 2;
gint column = i % 2;
editor->color_frames[i] =
g_object_new (GIMP_TYPE_COLOR_FRAME,
"gimp", GIMP (image_editor->image->gimp),
"mode", GIMP_COLOR_PICK_MODE_PIXEL,
"has-number", TRUE,
"number", i + 1,
"has-color-area", TRUE,
"has-coords", TRUE,
"hexpand", TRUE,
NULL);
gimp_color_frame_set_color_config (GIMP_COLOR_FRAME (editor->color_frames[i]),
config);
gtk_grid_attach (GTK_GRID (editor->grid), editor->color_frames[i],
column, row, 1, 1);
g_signal_connect_object (editor->color_frames[i], "notify::mode",
G_CALLBACK (gimp_sample_point_editor_mode_notify),
editor, 0);
g_object_set_data (G_OBJECT (editor->color_frames[i]),
"dirty", GINT_TO_POINTER (TRUE));
}
editor->n_color_frames = n_points;
}
for (i = 0; i < editor->n_color_frames; i++)
{
gtk_widget_set_visible (editor->color_frames[i], i < n_points);
}
if (n_points > 0)
gimp_sample_point_editor_dirty (editor, -1);
}
static void
gimp_sample_point_editor_dirty (GimpSamplePointEditor *editor,
gint index)
{
if (index >= 0)
{
g_object_set_data (G_OBJECT (editor->color_frames[index]),
"dirty", GINT_TO_POINTER (TRUE));
}
else
{
gint i;
for (i = 0; i < editor->n_color_frames; i++)
g_object_set_data (G_OBJECT (editor->color_frames[i]),
"dirty", GINT_TO_POINTER (TRUE));
}
if (editor->dirty_idle_id)
g_source_remove (editor->dirty_idle_id);
editor->dirty_idle_id =
g_idle_add ((GSourceFunc) gimp_sample_point_editor_update,
editor);
}
static gboolean
gimp_sample_point_editor_update (GimpSamplePointEditor *editor)
{
GimpImageEditor *image_editor = GIMP_IMAGE_EDITOR (editor);
GList *sample_points;
gint n_points;
GList *list;
gint i;
editor->dirty_idle_id = 0;
if (! image_editor->image)
return FALSE;
sample_points = gimp_image_get_sample_points (image_editor->image);
n_points = MIN (editor->n_color_frames, g_list_length (sample_points));
for (i = 0, list = sample_points;
i < n_points;
i++, list = g_list_next (list))
{
GimpColorFrame *color_frame = GIMP_COLOR_FRAME (editor->color_frames[i]);
if (GPOINTER_TO_INT (g_object_get_data (G_OBJECT (color_frame),
"dirty")))
{
GimpSamplePoint *sample_point = list->data;
const Babl *format;
gdouble pixel[4];
GeglColor *color;
GimpColorPickMode pick_mode;
gint x;
gint y;
g_object_set_data (G_OBJECT (color_frame),
"dirty", GINT_TO_POINTER (FALSE));
gimp_sample_point_get_position (sample_point, &x, &y);
color = gegl_color_new ("black");
if (gimp_image_pick_color (image_editor->image, NULL,
x, y,
FALSE,
editor->sample_merged,
FALSE, 0.0,
&format,
pixel,
&color))
{
gimp_color_frame_set_color (color_frame, FALSE, color, x, y);
}
else
{
gimp_color_frame_set_invalid (color_frame);
}
pick_mode = gimp_sample_point_get_pick_mode (sample_point);
gimp_color_frame_set_mode (color_frame, pick_mode);
g_object_unref (color);
}
}
return FALSE;
}
static void
gimp_sample_point_editor_mode_notify (GimpColorFrame *frame,
const GParamSpec *pspec,
GimpSamplePointEditor *editor)
{
GimpImageEditor *image_editor = GIMP_IMAGE_EDITOR (editor);
GList *sample_points;
gint n_points;
GList *list;
gint i;
sample_points = gimp_image_get_sample_points (image_editor->image);
n_points = MIN (editor->n_color_frames, g_list_length (sample_points));
for (i = 0, list = sample_points;
i < n_points;
i++, list = g_list_next (list))
{
if (GIMP_COLOR_FRAME (editor->color_frames[i]) == frame)
{
GimpSamplePoint *sample_point = list->data;
GimpColorPickMode pick_mode;
g_object_get (frame, "mode", &pick_mode, NULL);
if (pick_mode != gimp_sample_point_get_pick_mode (sample_point))
gimp_image_set_sample_point_pick_mode (image_editor->image,
sample_point,
pick_mode,
TRUE);
break;
}
}
}
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