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gimp/libgimp/gimpresolutionentry-private.c
Jehan 2a00a9e60a Issue #434: remove broken plural support for GimpUnit. 
Rather than trying to implement full i18n plural support, we just remove
this failed attempt from the past. The fact is that to get proper
support, we'd basically need to reimplement a Gettext-like plural
definition syntax within our API, then ask people to write down this
plural definition for their language, then to write every plural form…
all this for custom units which only them will ever see!

Moreover code investigation shows that the singular form was simply
never used, and the plural form was always used (whatever the actual
unit value displayed).

As for the "identifier", this was a text which was never shown anywhere
(except in the unit editor) and for all built-in units, as well as
default unitrc units, it was equivalent to the English plural value.

So we now just have a unique name which is the "long label" to be used
everywhere in the GUI, and abbreviation will be basically the "short
label". That's it. No useless (or worse, not actually usable because it
was not generic internationalization) values anymore!
2024-08-06 11:39:57 +02:00

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/* GIMP - The GNU Image Manipulation Program
* Copyright (C) 1995 Spencer Kimball and Peter Mattis
*
* gimpresolutionentry.c
* Copyright (C) 2024 Jehan
*
* 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 "libgimpwidgets/gimpwidgets.h"
#include "gimp.h"
#include "gimpui.h"
#include "gimpresolutionentry-private.h"
#include "libgimp-intl.h"
enum
{
PROP_0,
PROP_WIDTH,
PROP_HEIGHT,
PROP_PIXEL_DENSITY,
PROP_UNIT,
PROP_KEEP_RATIO,
N_PROPS
};
struct _GimpResolutionEntry
{
GtkGrid parent_instance;
gint width;
gint height;
gdouble ppi;
GimpUnit *unit;
gdouble ratio;
gboolean keep_ratio;
GtkWidget *phy_width_label;
GtkWidget *phy_height_label;
GtkWidget *chainbutton;
};
G_DEFINE_FINAL_TYPE (GimpResolutionEntry, gimp_resolution_entry, GTK_TYPE_GRID)
#define parent_class gimp_resolution_entry_parent_class
static void gimp_resolution_entry_class_init (GimpResolutionEntryClass *class);
static void gimp_resolution_entry_init (GimpResolutionEntry *gre);
static void gimp_resolution_entry_constructed (GObject *object);
static void gimp_resolution_entry_set_property (GObject *object,
guint property_id,
const GValue *value,
GParamSpec *pspec);
static void gimp_resolution_entry_get_property (GObject *object,
guint property_id,
GValue *value,
GParamSpec *pspec);
static GtkWidget * gimp_resolution_entry_attach_label (GimpResolutionEntry *entry,
const gchar *text,
gint row,
gint column,
gfloat alignment);
static void gimp_resolution_entry_format_label (GimpResolutionEntry *entry,
GtkWidget *label,
gdouble size);
static void gimp_resolution_entry_update_labels (GimpResolutionEntry *entry,
GParamSpec *param_spec,
GtkWidget *label);
static gboolean gimp_resolution_entry_ppi_to_unit (GBinding *binding,
const GValue *from_value,
GValue *to_value,
GimpResolutionEntry *entry);
static gboolean gimp_resolution_entry_unit_to_ppi (GBinding *binding,
const GValue *from_value,
GValue *to_value,
GimpResolutionEntry *entry);
static GParamSpec *props[N_PROPS] = { NULL, };
static void
gimp_resolution_entry_class_init (GimpResolutionEntryClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
object_class->constructed = gimp_resolution_entry_constructed;
object_class->set_property = gimp_resolution_entry_set_property;
object_class->get_property = gimp_resolution_entry_get_property;
props[PROP_WIDTH] = g_param_spec_int ("width",
"Width in pixel",
NULL,
GIMP_MIN_IMAGE_SIZE, GIMP_MAX_IMAGE_SIZE, GIMP_MIN_IMAGE_SIZE,
GIMP_PARAM_READWRITE |
G_PARAM_EXPLICIT_NOTIFY |
G_PARAM_CONSTRUCT);
props[PROP_HEIGHT] = g_param_spec_int ("height",
"Height in pixel",
NULL,
GIMP_MIN_IMAGE_SIZE, GIMP_MAX_IMAGE_SIZE, GIMP_MIN_IMAGE_SIZE,
GIMP_PARAM_READWRITE |
G_PARAM_EXPLICIT_NOTIFY |
G_PARAM_CONSTRUCT);
props[PROP_PIXEL_DENSITY] = g_param_spec_double ("pixel-density",
"Pixel density in pixel per inch",
NULL,
GIMP_MIN_RESOLUTION, GIMP_MAX_RESOLUTION, 300.0,
GIMP_PARAM_READWRITE |
G_PARAM_EXPLICIT_NOTIFY |
G_PARAM_CONSTRUCT);
props[PROP_UNIT] = gimp_param_spec_unit ("unit",
"Physical unit for the pixel density",
_("This unit is used to select the pixel density "
"and show dimensions in physical unit"),
FALSE, FALSE,
gimp_unit_inch (),
GIMP_PARAM_READWRITE |
G_PARAM_EXPLICIT_NOTIFY |
G_PARAM_CONSTRUCT);
props[PROP_KEEP_RATIO] = g_param_spec_boolean ("keep-ratio",
_("_Keep aspect ratio"),
_("Force dimensions with aspect ratio"),
TRUE,
GIMP_PARAM_READWRITE |
G_PARAM_EXPLICIT_NOTIFY |
G_PARAM_CONSTRUCT);
g_object_class_install_properties (object_class, N_PROPS, props);
}
static void
gimp_resolution_entry_init (GimpResolutionEntry *entry)
{
entry->width = 0;
entry->height = 0;
entry->ppi = 300.0;
entry->unit = gimp_unit_inch ();
entry->keep_ratio = TRUE;
gtk_grid_set_row_spacing (GTK_GRID (entry), 2);
gtk_grid_set_column_spacing (GTK_GRID (entry), 4);
}
static void
gimp_resolution_entry_constructed (GObject *object)
{
GimpResolutionEntry *entry = GIMP_RESOLUTION_ENTRY (object);
GtkTreeModel *model;
GtkWidget *label;
GtkWidget *widget;
GBinding *binding;
GtkAdjustment *adj;
g_return_if_fail (entry->height != 0);
/* Initial ratio is from the initial values. */
entry->ratio = (gdouble) entry->width / (gdouble) entry->height;
widget = gimp_prop_spin_button_new (object, "pixel-density", 1.0, 10.0, 2);
adj = gtk_spin_button_get_adjustment (GTK_SPIN_BUTTON (widget));
binding = g_object_get_data (G_OBJECT (adj), "gimp-prop-adjustment-binding");
g_binding_unbind (binding);
binding = g_object_bind_property_full (object, "pixel-density",
widget, "value",
G_BINDING_BIDIRECTIONAL | G_BINDING_SYNC_CREATE,
(GBindingTransformFunc) gimp_resolution_entry_ppi_to_unit,
(GBindingTransformFunc) gimp_resolution_entry_unit_to_ppi,
entry, NULL);
g_object_set_data (G_OBJECT (adj), "gimp-prop-adjustment-binding", binding);
gtk_grid_attach (GTK_GRID (entry), widget, 1, 3, 1, 1);
gtk_widget_show (widget);
widget = gimp_prop_unit_combo_box_new (object, "unit");
model = gtk_combo_box_get_model (GTK_COMBO_BOX (widget));
g_object_set (model,
"short-format", _("pixels/%a"),
"long-format", _("pixels/%a"),
NULL);
gtk_grid_attach (GTK_GRID (entry), widget, 3, 3, 1, 1);
gtk_widget_show (widget);
widget = gimp_prop_spin_button_new (object, "width", 1.0, 10.0, 0);
gtk_grid_attach (GTK_GRID (entry), widget, 1, 1, 1, 1);
gtk_widget_show (widget);
label = g_object_new (GTK_TYPE_LABEL,
"xalign", 0.0,
"yalign", 0.5,
NULL);
gimp_label_set_attributes (GTK_LABEL (label),
PANGO_ATTR_STYLE, PANGO_STYLE_ITALIC,
-1);
gimp_resolution_entry_format_label (entry, label,
entry->width / entry->ppi);
entry->phy_width_label = label;
gtk_grid_attach (GTK_GRID (entry), entry->phy_width_label, 3, 1, 1, 1);
gtk_widget_show (entry->phy_width_label);
widget = gimp_prop_spin_button_new (object, "height", 1.0, 10.0, 0);
gtk_grid_attach (GTK_GRID (entry), widget, 1, 2, 1, 1);
gtk_widget_show (widget);
label = g_object_new (GTK_TYPE_LABEL,
"xalign", 0.0,
"yalign", 0.5,
NULL);
gimp_label_set_attributes (GTK_LABEL (label),
PANGO_ATTR_STYLE, PANGO_STYLE_ITALIC,
-1);
gimp_resolution_entry_format_label (entry, label,
entry->height / entry->ppi);
entry->phy_height_label = label;
gtk_grid_attach (GTK_GRID (entry), entry->phy_height_label, 3, 2, 1, 1);
gtk_widget_show (entry->phy_height_label);
g_signal_connect (object, "notify::width",
G_CALLBACK (gimp_resolution_entry_update_labels),
entry->phy_width_label);
g_signal_connect (object, "notify::height",
G_CALLBACK (gimp_resolution_entry_update_labels),
entry->phy_height_label);
g_signal_connect (object, "notify::pixel-density",
G_CALLBACK (gimp_resolution_entry_update_labels),
NULL);
}
static void
gimp_resolution_entry_set_property (GObject *object,
guint property_id,
const GValue *value,
GParamSpec *pspec)
{
GimpResolutionEntry *entry = GIMP_RESOLUTION_ENTRY (object);
switch (property_id)
{
case PROP_WIDTH:
gimp_resolution_entry_set_width (entry, g_value_get_int (value));
break;
case PROP_HEIGHT:
gimp_resolution_entry_set_height (entry, g_value_get_int (value));
break;
case PROP_PIXEL_DENSITY:
gimp_resolution_entry_set_pixel_density (entry, g_value_get_double (value));
break;
case PROP_UNIT:
gimp_resolution_entry_set_unit (entry, g_value_get_object (value));
break;
case PROP_KEEP_RATIO:
gimp_resolution_entry_set_keep_ratio (entry, g_value_get_boolean (value));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
break;
}
}
static void
gimp_resolution_entry_get_property (GObject *object,
guint property_id,
GValue *value,
GParamSpec *pspec)
{
GimpResolutionEntry *entry = GIMP_RESOLUTION_ENTRY (object);
switch (property_id)
{
case PROP_WIDTH:
g_value_set_int (value, entry->width);
break;
case PROP_HEIGHT:
g_value_set_int (value, entry->height);
break;
case PROP_PIXEL_DENSITY:
g_value_set_double (value, entry->ppi);
break;
case PROP_UNIT:
g_value_set_object (value, entry->unit);
break;
case PROP_KEEP_RATIO:
g_value_set_boolean (value, entry->keep_ratio);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
break;
}
}
GtkWidget *
gimp_prop_resolution_entry_new (GObject *config,
const gchar *width_prop,
const gchar *height_prop,
const gchar *ppi_prop,
const gchar *unit_prop)
{
GtkWidget *widget;
GParamSpec *w_pspec;
GParamSpec *h_pspec;
GParamSpec *d_pspec;
GParamSpec *u_pspec;
gint width = 0;
gint height = 0;
gdouble ppi = 300.0;
GimpUnit *unit = gimp_unit_inch ();
g_return_val_if_fail (G_IS_OBJECT (config), NULL);
g_return_val_if_fail (width_prop != NULL, NULL);
g_return_val_if_fail (height_prop != NULL, NULL);
g_return_val_if_fail (ppi_prop != NULL, NULL);
g_return_val_if_fail (unit_prop != NULL, NULL);
w_pspec = g_object_class_find_property (G_OBJECT_GET_CLASS (config), width_prop);
h_pspec = g_object_class_find_property (G_OBJECT_GET_CLASS (config), height_prop);
d_pspec = g_object_class_find_property (G_OBJECT_GET_CLASS (config), ppi_prop);
u_pspec = g_object_class_find_property (G_OBJECT_GET_CLASS (config), unit_prop);
g_return_val_if_fail (w_pspec != NULL, NULL);
g_return_val_if_fail (h_pspec != NULL, NULL);
g_return_val_if_fail (d_pspec != NULL, NULL);
g_return_val_if_fail (u_pspec != NULL, NULL);
g_object_get (config,
width_prop, &width,
height_prop, &height,
ppi_prop, &ppi,
unit_prop, &unit,
NULL);
widget = gimp_resolution_entry_new (g_param_spec_get_nick (w_pspec), width,
g_param_spec_get_nick (h_pspec), height,
g_param_spec_get_nick (d_pspec), ppi,
unit);
g_object_bind_property (config, width_prop,
widget, "width",
G_BINDING_BIDIRECTIONAL | G_BINDING_SYNC_CREATE);
g_object_bind_property (config, height_prop,
widget, "height",
G_BINDING_BIDIRECTIONAL | G_BINDING_SYNC_CREATE);
g_object_bind_property (config, ppi_prop,
widget, "pixel-density",
G_BINDING_BIDIRECTIONAL | G_BINDING_SYNC_CREATE);
g_object_bind_property (config, unit_prop,
widget, "unit",
G_BINDING_BIDIRECTIONAL | G_BINDING_SYNC_CREATE);
return widget;
}
/**
* gimp_resolution_entry_new:
* @width_label: Optional label for the width control.
* @width: Width of the item, specified in pixels.
* @height_label: Optional label for the height control.
* @height: Height of the item, specified in pixels.
* @res_label: Optional label for the resolution entry.
* @pixel_density: The initial resolution in pixel per inch.
* @display_unit: The display unit.
*
* Creates a new #GimpResolutionEntry widget.
*
* The #GimpResolutionEntry is derived from #GtkGrid and will have
* an empty border of one cell width on each side plus an empty column left
* of the #GimpUnitMenu to allow the caller to add labels or other widgets.
*
* A #GimpChainButton is displayed if independent is set to %TRUE.
*
* Returns: A pointer to the new #GimpResolutionEntry widget.
**/
GtkWidget *
gimp_resolution_entry_new (const gchar *width_label,
gint width,
const gchar *height_label,
gint height,
const gchar *res_label,
gdouble pixel_density,
GimpUnit *display_unit)
{
GimpResolutionEntry *entry;
entry = g_object_new (GIMP_TYPE_RESOLUTION_ENTRY,
"width", width,
"height", height,
"pixel-density", pixel_density,
"unit", display_unit,
NULL);
if (width_label)
gimp_resolution_entry_attach_label (entry, width_label, 1, 0, 0.0);
if (height_label)
gimp_resolution_entry_attach_label (entry, height_label, 2, 0, 0.0);
if (res_label)
gimp_resolution_entry_attach_label (entry, res_label, 3, 0, 0.0);
return GTK_WIDGET (entry);
}
static gboolean
gimp_resolution_entry_idle_notify (GimpResolutionEntry *entry)
{
g_object_notify_by_pspec (G_OBJECT (entry), props[PROP_WIDTH]);
g_object_notify_by_pspec (G_OBJECT (entry), props[PROP_HEIGHT]);
return G_SOURCE_REMOVE;
}
void
gimp_resolution_entry_set_width (GimpResolutionEntry *entry,
gint width)
{
if (width == 0)
{
/* Do nothing, i.e. revert back to value it was. Yet notify after an idle
* source, otherwise the entry is not updated (the binding likely blocks
* notifications for this property to avoid infinite loops.
*/
g_idle_add ((GSourceFunc) gimp_resolution_entry_idle_notify, entry);
}
else if (entry->width != width)
{
g_object_freeze_notify (G_OBJECT (entry));
if (entry->keep_ratio && entry->width != 0)
{
gint height;
height = (gint) ((gdouble) width / entry->ratio);
if (height != entry->height)
{
entry->height = height;
g_object_notify_by_pspec (G_OBJECT (entry), props[PROP_HEIGHT]);
}
}
entry->width = width;
g_object_notify_by_pspec (G_OBJECT (entry), props[PROP_WIDTH]);
g_object_thaw_notify (G_OBJECT (entry));
}
}
void
gimp_resolution_entry_set_height (GimpResolutionEntry *entry,
gint height)
{
if (height == 0)
{
/* Do nothing, i.e. revert back to value it was. Yet notify after an idle
* source, otherwise the entry is not updated (the binding likely blocks
* notifications for this property to avoid infinite loops.
*/
g_idle_add ((GSourceFunc) gimp_resolution_entry_idle_notify, entry);
}
else if (entry->height != height)
{
g_object_freeze_notify (G_OBJECT (entry));
if (entry->keep_ratio && entry->height != 0)
{
gint width;
width = (gint) ((gdouble) height * entry->ratio);
if (width != entry->width)
{
entry->width = width;
g_object_notify_by_pspec (G_OBJECT (entry), props[PROP_WIDTH]);
}
}
entry->height = height;
g_object_notify_by_pspec (G_OBJECT (entry), props[PROP_HEIGHT]);
g_object_thaw_notify (G_OBJECT (entry));
}
}
void
gimp_resolution_entry_set_pixel_density (GimpResolutionEntry *entry,
gdouble ppi)
{
if (entry->ppi != ppi)
{
entry->ppi = ppi;
g_object_notify_by_pspec (G_OBJECT (entry), props[PROP_PIXEL_DENSITY]);
}
}
void
gimp_resolution_entry_set_unit (GimpResolutionEntry *entry,
GimpUnit *unit)
{
g_return_if_fail (unit != gimp_unit_pixel ());
g_return_if_fail (unit != gimp_unit_percent ());
if (entry->unit != unit)
{
entry->unit = unit;
g_object_notify_by_pspec (G_OBJECT (entry), props[PROP_UNIT]);
/* Even though the pixel density (in pixel per inch) has not in fact
* changed, we send a notification to force a refresh of the displayed
* pixel per other-unit value in the entry field.
*/
g_object_notify_by_pspec (G_OBJECT (entry), props[PROP_PIXEL_DENSITY]);
if (entry->phy_width_label)
gimp_resolution_entry_format_label (entry, entry->phy_width_label,
gimp_unit_get_factor (entry->unit) *
entry->width / entry->ppi);
if (entry->phy_height_label)
gimp_resolution_entry_format_label (entry, entry->phy_height_label,
gimp_unit_get_factor (entry->unit) *
entry->height / entry->ppi);
}
}
void
gimp_resolution_entry_set_keep_ratio (GimpResolutionEntry *entry,
gboolean keep_ratio)
{
if (keep_ratio != entry->keep_ratio)
{
entry->keep_ratio = keep_ratio;
if (entry->keep_ratio)
entry->ratio = (gdouble) entry->width / (gdouble) entry->height;
g_object_notify_by_pspec (G_OBJECT (entry), props[PROP_KEEP_RATIO]);
}
}
gint
gimp_resolution_entry_get_width (GimpResolutionEntry *entry)
{
return entry->width;
}
gint
gimp_resolution_entry_get_height (GimpResolutionEntry *entry)
{
return entry->height;
}
gdouble
gimp_resolution_entry_get_density (GimpResolutionEntry *entry)
{
return entry->ppi;
}
GimpUnit *
gimp_resolution_entry_get_unit (GimpResolutionEntry *entry)
{
return entry->unit;
}
gboolean
gimp_resolution_entry_get_keep_ratio (GimpResolutionEntry *entry)
{
return entry->keep_ratio;
}
/* Private functions. */
/**
* gimp_resolution_entry_attach_label:
* @gre: The #GimpResolutionEntry you want to add a label to.
* @text: The text of the label.
* @row: The row where the label will be attached.
* @column: The column where the label will be attached.
* @alignment: The horizontal alignment of the label.
*
* Attaches a #GtkLabel to the #GimpResolutionEntry (which is a #GtkGrid).
*
* Returns: A pointer to the new #GtkLabel widget.
**/
static GtkWidget *
gimp_resolution_entry_attach_label (GimpResolutionEntry *gre,
const gchar *text,
gint row,
gint column,
gfloat alignment)
{
GtkWidget *label;
g_return_val_if_fail (GIMP_IS_RESOLUTION_ENTRY (gre), NULL);
g_return_val_if_fail (text != NULL, NULL);
label = gtk_label_new_with_mnemonic (text);
if (column == 0)
{
GList *children;
GList *list;
children = gtk_container_get_children (GTK_CONTAINER (gre));
for (list = children; list; list = g_list_next (list))
{
GtkWidget *child = list->data;
gint left_attach;
gint top_attach;
gtk_container_child_get (GTK_CONTAINER (gre), child,
"left-attach", &left_attach,
"top-attach", &top_attach,
NULL);
if (left_attach == 1 && top_attach == row)
{
gtk_label_set_mnemonic_widget (GTK_LABEL (label), child);
break;
}
}
g_list_free (children);
}
gtk_label_set_xalign (GTK_LABEL (label), alignment);
gtk_grid_attach (GTK_GRID (gre), label, column, row, 1, 1);
gtk_widget_show (label);
return label;
}
static void
gimp_resolution_entry_format_label (GimpResolutionEntry *entry,
GtkWidget *label,
gdouble size_inch)
{
gchar *format = g_strdup_printf ("%%.%df %%s",
gimp_unit_get_digits (entry->unit));
gchar *text = g_strdup_printf (format,
size_inch * gimp_unit_get_factor (entry->unit),
gimp_unit_get_name (entry->unit));
g_free (format);
gtk_label_set_text (GTK_LABEL (label), text);
g_free (text);
}
static void
gimp_resolution_entry_update_labels (GimpResolutionEntry *entry,
GParamSpec *param_spec,
GtkWidget *label)
{
if ((label == NULL && entry->phy_width_label != NULL) ||
(label != NULL && label == entry->phy_width_label))
gimp_resolution_entry_format_label (entry, entry->phy_width_label,
entry->width / entry->ppi);
if ((label == NULL && entry->phy_height_label != NULL) ||
(label != NULL && label == entry->phy_height_label))
gimp_resolution_entry_format_label (entry, entry->phy_height_label,
entry->height / entry->ppi);
}
static gboolean
gimp_resolution_entry_ppi_to_unit (GBinding *binding,
const GValue *from_value,
GValue *to_value,
GimpResolutionEntry *entry)
{
gdouble ppi = g_value_get_double (from_value);
g_value_set_double (to_value, ppi / gimp_unit_get_factor (entry->unit));
return TRUE;
}
static gboolean
gimp_resolution_entry_unit_to_ppi (GBinding *binding,
const GValue *from_value,
GValue *to_value,
GimpResolutionEntry *entry)
{
gdouble ppu = g_value_get_double (from_value);
g_value_set_double (to_value, ppu * gimp_unit_get_factor (entry->unit));
return TRUE;
}
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