Gimp/app/widgets/gimpimagepropview.c
Jehan d493f0537f Issue #8900 and #9923: reimplementing GimpUnit as a proper class.
This fixes all our GObject Introspection issues with GimpUnit which was
both an enum and an int-derived type of user-defined units *completing*
the enum values. GIR clearly didn't like this!

Now GimpUnit is a proper class and units are unique objects, allowing to
compare them with an identity test (i.e. `unit == gimp_unit_pixel ()`
tells us if unit is the pixel unit or not), which makes it easy to use,
just like with int, yet adding also methods, making for nicer
introspected API.

As an aside, this also fixes #10738, by having all the built-in units
retrievable even if libgimpbase had not been properly initialized with
gimp_base_init().
I haven't checked in details how GIR works to introspect, but it looks
like it loads the library to inspect and runs functions, hence
triggering some CRITICALS because virtual methods (supposed to be
initialized with gimp_base_init() run by libgimp) are not set. This new
code won't trigger any critical because the vtable method are now not
necessary, at least for all built-in units.

Note that GimpUnit is still in libgimpbase. It could have been moved to
libgimp in order to avoid any virtual method table (since we need to
keep core and libgimp side's units in sync, PDB is required), but too
many libgimpwidgets widgets were already using GimpUnit. And technically
most of GimpUnit logic doesn't require PDB (only the creation/sync
part). This is one of the reasons why user-created GimpUnit list is
handled and stored differently from other types of objects.

Globally this simplifies the code a lot too and we don't need separate
implementations of various utils for core and libgimp, which means less
prone to errors.
2024-08-02 10:46:38 +02:00

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/* GIMP - The GNU Image Manipulation Program
* Copyright (C) 1995 Spencer Kimball and Peter Mattis
*
* GimpImagePropView
* Copyright (C) 2005 Michael Natterer <mitch@gimp.org>
* Copyright (C) 2006 Sven Neumann <sven@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 "libgimpcolor/gimpcolor.h"
#include "libgimpwidgets/gimpwidgets.h"
#include "widgets-types.h"
#include "core/gimp.h"
#include "core/gimpcontainer.h"
#include "core/gimpimage.h"
#include "core/gimpimage-colormap.h"
#include "core/gimpimage-undo.h"
#include "core/gimppalette.h"
#include "core/gimpundostack.h"
#include "core/gimp-utils.h"
#include "plug-in/gimppluginmanager-file.h"
#include "plug-in/gimppluginprocedure.h"
#include "gimpimagepropview.h"
#include "gimppropwidgets.h"
#include "gimp-intl.h"
enum
{
PROP_0,
PROP_IMAGE
};
static void gimp_image_prop_view_constructed (GObject *object);
static void gimp_image_prop_view_set_property (GObject *object,
guint property_id,
const GValue *value,
GParamSpec *pspec);
static void gimp_image_prop_view_get_property (GObject *object,
guint property_id,
GValue *value,
GParamSpec *pspec);
static GtkWidget * gimp_image_prop_view_add_label (GtkGrid *grid,
gint row,
const gchar *text);
static void gimp_image_prop_view_undo_event (GimpImage *image,
GimpUndoEvent event,
GimpUndo *undo,
GimpImagePropView *view);
static void gimp_image_prop_view_update (GimpImagePropView *view);
static void gimp_image_prop_view_file_update (GimpImagePropView *view);
static void gimp_image_prop_view_realize (GimpImagePropView *view,
gpointer user_data);
G_DEFINE_TYPE (GimpImagePropView, gimp_image_prop_view, GTK_TYPE_GRID)
#define parent_class gimp_image_prop_view_parent_class
static void
gimp_image_prop_view_class_init (GimpImagePropViewClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
object_class->constructed = gimp_image_prop_view_constructed;
object_class->set_property = gimp_image_prop_view_set_property;
object_class->get_property = gimp_image_prop_view_get_property;
g_object_class_install_property (object_class, PROP_IMAGE,
g_param_spec_object ("image", NULL, NULL,
GIMP_TYPE_IMAGE,
GIMP_PARAM_READWRITE |
G_PARAM_CONSTRUCT_ONLY));
}
static void
gimp_image_prop_view_init (GimpImagePropView *view)
{
GtkGrid *grid = GTK_GRID (view);
gint row = 0;
gtk_grid_set_column_spacing (grid, 6);
gtk_grid_set_row_spacing (grid, 3);
view->pixel_size_label =
gimp_image_prop_view_add_label (grid, row++, _("Size in pixels:"));
view->print_size_label =
gimp_image_prop_view_add_label (grid, row++, _("Print size:"));
view->resolution_label =
gimp_image_prop_view_add_label (grid, row++, _("Resolution:"));
view->colorspace_label =
gimp_image_prop_view_add_label (grid, row++, _("Color space:"));
view->precision_label =
gimp_image_prop_view_add_label (grid, row++, _("Precision:"));
gtk_widget_set_margin_bottom (view->precision_label, 12);
view->filename_label =
gimp_image_prop_view_add_label (grid, row++, _("File Name:"));
gtk_label_set_ellipsize (GTK_LABEL (view->filename_label),
PANGO_ELLIPSIZE_MIDDLE);
/* See gimp_image_prop_view_realize(). */
gtk_label_set_max_width_chars (GTK_LABEL (view->filename_label), 25);
view->filesize_label =
gimp_image_prop_view_add_label (grid, row++, _("File Size:"));
view->filetype_label =
gimp_image_prop_view_add_label (grid, row++, _("File Type:"));
gtk_widget_set_margin_bottom (view->filetype_label, 12);
view->memsize_label =
gimp_image_prop_view_add_label (grid, row++, _("Size in memory:"));
view->undo_label =
gimp_image_prop_view_add_label (grid, row++, _("Undo steps:"));
view->redo_label =
gimp_image_prop_view_add_label (grid, row++, _("Redo steps:"));
gtk_widget_set_margin_bottom (view->redo_label, 12);
view->pixels_label =
gimp_image_prop_view_add_label (grid, row++, _("Number of pixels:"));
view->layers_label =
gimp_image_prop_view_add_label (grid, row++, _("Number of layers:"));
view->channels_label =
gimp_image_prop_view_add_label (grid, row++, _("Number of channels:"));
view->vectors_label =
gimp_image_prop_view_add_label (grid, row++, _("Number of paths:"));
g_signal_connect (view, "realize",
G_CALLBACK (gimp_image_prop_view_realize),
NULL);
}
static void
gimp_image_prop_view_constructed (GObject *object)
{
GimpImagePropView *view = GIMP_IMAGE_PROP_VIEW (object);
G_OBJECT_CLASS (parent_class)->constructed (object);
gimp_assert (view->image != NULL);
g_signal_connect_object (view->image, "name-changed",
G_CALLBACK (gimp_image_prop_view_file_update),
G_OBJECT (view),
G_CONNECT_SWAPPED);
g_signal_connect_object (view->image, "size-changed",
G_CALLBACK (gimp_image_prop_view_update),
G_OBJECT (view),
G_CONNECT_SWAPPED);
g_signal_connect_object (view->image, "resolution-changed",
G_CALLBACK (gimp_image_prop_view_update),
G_OBJECT (view),
G_CONNECT_SWAPPED);
g_signal_connect_object (view->image, "unit-changed",
G_CALLBACK (gimp_image_prop_view_update),
G_OBJECT (view),
G_CONNECT_SWAPPED);
g_signal_connect_object (view->image, "mode-changed",
G_CALLBACK (gimp_image_prop_view_update),
G_OBJECT (view),
G_CONNECT_SWAPPED);
g_signal_connect_object (view->image, "undo-event",
G_CALLBACK (gimp_image_prop_view_undo_event),
G_OBJECT (view),
0);
gimp_image_prop_view_update (view);
gimp_image_prop_view_file_update (view);
}
static void
gimp_image_prop_view_set_property (GObject *object,
guint property_id,
const GValue *value,
GParamSpec *pspec)
{
GimpImagePropView *view = GIMP_IMAGE_PROP_VIEW (object);
switch (property_id)
{
case PROP_IMAGE:
view->image = g_value_get_object (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
break;
}
}
static void
gimp_image_prop_view_get_property (GObject *object,
guint property_id,
GValue *value,
GParamSpec *pspec)
{
GimpImagePropView *view = GIMP_IMAGE_PROP_VIEW (object);
switch (property_id)
{
case PROP_IMAGE:
g_value_set_object (value, view->image);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
break;
}
}
/* public functions */
GtkWidget *
gimp_image_prop_view_new (GimpImage *image)
{
g_return_val_if_fail (GIMP_IS_IMAGE (image), NULL);
return g_object_new (GIMP_TYPE_IMAGE_PROP_VIEW,
"image", image,
NULL);
}
/* private functions */
static GtkWidget *
gimp_image_prop_view_add_label (GtkGrid *grid,
gint row,
const gchar *text)
{
GtkWidget *label;
GtkWidget *desc;
desc = g_object_new (GTK_TYPE_LABEL,
"label", text,
"xalign", 1.0,
"yalign", 0.0,
NULL);
gimp_label_set_attributes (GTK_LABEL (desc),
PANGO_ATTR_WEIGHT, PANGO_WEIGHT_BOLD,
-1);
gtk_grid_attach (grid, desc, 0, row, 1, 1);
gtk_widget_show (desc);
label = g_object_new (GTK_TYPE_LABEL,
"xalign", 0.0,
"yalign", 0.5,
"selectable", TRUE,
NULL);
gtk_grid_attach (grid, label, 1, row, 1, 1);
gtk_widget_show (label);
return label;
}
static void
gimp_image_prop_view_label_set_memsize (GtkWidget *label,
GimpObject *object)
{
gchar *str = g_format_size (gimp_object_get_memsize (object, NULL));
gtk_label_set_text (GTK_LABEL (label), str);
g_free (str);
}
static void
gimp_image_prop_view_label_set_filename (GtkWidget *label,
GimpImage *image)
{
GFile *file = gimp_image_get_any_file (image);
if (file)
{
gtk_label_set_text (GTK_LABEL (label),
gimp_file_get_utf8_name (file));
/* In case the label is ellipsized. */
gtk_widget_set_tooltip_text (GTK_WIDGET (label),
gimp_file_get_utf8_name (file));
}
else
{
gtk_label_set_text (GTK_LABEL (label), NULL);
gimp_help_set_help_data (gtk_widget_get_parent (label), NULL, NULL);
}
}
static void
gimp_image_prop_view_label_set_filesize (GtkWidget *label,
GimpImage *image)
{
GFile *file = gimp_image_get_any_file (image);
if (file)
{
GFileInfo *info = g_file_query_info (file,
G_FILE_ATTRIBUTE_STANDARD_SIZE,
G_FILE_QUERY_INFO_NONE,
NULL, NULL);
if (info)
{
goffset size = g_file_info_get_attribute_uint64 (info, G_FILE_ATTRIBUTE_STANDARD_SIZE);
gchar *str = g_format_size (size);
gtk_label_set_text (GTK_LABEL (label), str);
g_free (str);
g_object_unref (info);
}
else
{
gtk_label_set_text (GTK_LABEL (label), NULL);
}
}
else
{
gtk_label_set_text (GTK_LABEL (label), NULL);
}
}
static void
gimp_image_prop_view_label_set_filetype (GtkWidget *label,
GimpImage *image)
{
GimpPlugInProcedure *proc = gimp_image_get_save_proc (image);
if (! proc)
proc = gimp_image_get_load_proc (image);
if (! proc)
{
GimpPlugInManager *manager = image->gimp->plug_in_manager;
GFile *file = gimp_image_get_file (image);
if (file)
proc = gimp_plug_in_manager_file_procedure_find (manager,
GIMP_FILE_PROCEDURE_GROUP_OPEN,
file, NULL);
}
gtk_label_set_text (GTK_LABEL (label),
proc ?
gimp_procedure_get_label (GIMP_PROCEDURE (proc)) : NULL);
}
static void
gimp_image_prop_view_label_set_undo (GtkWidget *label,
GimpUndoStack *stack)
{
gint steps = gimp_undo_stack_get_depth (stack);
if (steps > 0)
{
GimpObject *object = GIMP_OBJECT (stack);
gchar *str;
gchar buf[256];
str = g_format_size (gimp_object_get_memsize (object, NULL));
g_snprintf (buf, sizeof (buf), "%d (%s)", steps, str);
g_free (str);
gtk_label_set_text (GTK_LABEL (label), buf);
}
else
{
/* no undo (or redo) steps available */
gtk_label_set_text (GTK_LABEL (label), _("None"));
}
}
static void
gimp_image_prop_view_undo_event (GimpImage *image,
GimpUndoEvent event,
GimpUndo *undo,
GimpImagePropView *view)
{
gimp_image_prop_view_update (view);
}
static void
gimp_image_prop_view_update (GimpImagePropView *view)
{
GimpImage *image = view->image;
GimpColorProfile *profile;
GimpImageBaseType type;
GimpPrecision precision;
GimpUnit *unit;
gdouble unit_factor;
const gchar *desc;
gchar format_buf[32];
gchar buf[256];
gdouble xres;
gdouble yres;
gimp_image_get_resolution (image, &xres, &yres);
/* pixel size */
g_snprintf (buf, sizeof (buf), ngettext ("%d × %d pixel",
"%d × %d pixels",
gimp_image_get_height (image)),
gimp_image_get_width (image),
gimp_image_get_height (image));
gtk_label_set_text (GTK_LABEL (view->pixel_size_label), buf);
/* print size */
unit = gimp_get_default_unit ();
g_snprintf (format_buf, sizeof (format_buf), "%%.%df × %%.%df %s",
gimp_unit_get_scaled_digits (unit, xres),
gimp_unit_get_scaled_digits (unit, yres),
gimp_unit_get_plural (unit));
g_snprintf (buf, sizeof (buf), format_buf,
gimp_pixels_to_units (gimp_image_get_width (image), unit, xres),
gimp_pixels_to_units (gimp_image_get_height (image), unit, yres));
gtk_label_set_text (GTK_LABEL (view->print_size_label), buf);
/* resolution */
unit = gimp_image_get_unit (image);
unit_factor = gimp_unit_get_factor (unit);
g_snprintf (format_buf, sizeof (format_buf), _("pixels/%s"),
gimp_unit_get_abbreviation (unit));
g_snprintf (buf, sizeof (buf), _("%g × %g %s"),
xres / unit_factor,
yres / unit_factor,
unit == gimp_unit_inch () ? _("ppi") : format_buf);
gtk_label_set_text (GTK_LABEL (view->resolution_label), buf);
/* color space */
type = gimp_image_get_base_type (image);
gimp_enum_get_value (GIMP_TYPE_IMAGE_BASE_TYPE, type,
NULL, NULL, &desc, NULL);
switch (type)
{
case GIMP_RGB:
case GIMP_GRAY:
profile = gimp_color_managed_get_color_profile (GIMP_COLOR_MANAGED (image));
g_snprintf (buf, sizeof (buf), "%s: %s", desc,
gimp_color_profile_get_label (profile));
break;
case GIMP_INDEXED:
{
gint n_colors;
n_colors = gimp_palette_get_n_colors (gimp_image_get_colormap_palette (image));
g_snprintf (buf, sizeof (buf),
ngettext ("Indexed color (monochrome)",
"Indexed color (%d colors)",
n_colors), n_colors);
}
break;
}
gtk_label_set_text (GTK_LABEL (view->colorspace_label), buf);
gtk_label_set_line_wrap (GTK_LABEL (view->colorspace_label), TRUE);
/* precision */
precision = gimp_image_get_precision (image);
gimp_enum_get_value (GIMP_TYPE_PRECISION, precision,
NULL, NULL, &desc, NULL);
gtk_label_set_text (GTK_LABEL (view->precision_label), desc);
/* size in memory */
gimp_image_prop_view_label_set_memsize (view->memsize_label,
GIMP_OBJECT (image));
/* undo / redo */
gimp_image_prop_view_label_set_undo (view->undo_label,
gimp_image_get_undo_stack (image));
gimp_image_prop_view_label_set_undo (view->redo_label,
gimp_image_get_redo_stack (image));
/* number of layers */
g_snprintf (buf, sizeof (buf), "%d",
gimp_image_get_width (image) *
gimp_image_get_height (image));
gtk_label_set_text (GTK_LABEL (view->pixels_label), buf);
/* number of layers */
g_snprintf (buf, sizeof (buf), "%d",
gimp_image_get_n_layers (image));
gtk_label_set_text (GTK_LABEL (view->layers_label), buf);
/* number of channels */
g_snprintf (buf, sizeof (buf), "%d",
gimp_image_get_n_channels (image));
gtk_label_set_text (GTK_LABEL (view->channels_label), buf);
/* number of vectors */
g_snprintf (buf, sizeof (buf), "%d",
gimp_image_get_n_paths (image));
gtk_label_set_text (GTK_LABEL (view->vectors_label), buf);
}
static void
gimp_image_prop_view_file_update (GimpImagePropView *view)
{
GimpImage *image = view->image;
/* filename */
gimp_image_prop_view_label_set_filename (view->filename_label, image);
/* filesize */
gimp_image_prop_view_label_set_filesize (view->filesize_label, image);
/* filetype */
gimp_image_prop_view_label_set_filetype (view->filetype_label, image);
}
static void
gimp_image_prop_view_realize (GimpImagePropView *view,
gpointer user_data)
{
/* Ugly trick to avoid extra-wide dialog at construction because of
* overlong file path. Basically I give a reasonable max size at
* construction (if the path is longer, it is just ellipsized per set
* rules), then once the widget is realized, I remove the max size,
* allowing the widget to grow wider if ever the dialog were
* manually resized (we don't want to keep the label short and
* ellipsized if the dialog is explicitly made to have enough place).
*/
gtk_label_set_max_width_chars (GTK_LABEL (view->filename_label), -1);
}