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gtk2/gtk/gtkcolorchooserwidget.c
Sophie Herold a546ae32d7 Remove all nicks and blurbs from param specs 
Those property features don't seem to be in use anywhere.
They are redundant since the docs cover the same information
and more. They also created unnecessary translation work.

Closes #4904
2022-05-11 18:16:29 +02:00

889 lines
26 KiB
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/* GTK - The GIMP Toolkit
*
* Copyright (C) 2012 Red Hat, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
*/
#include "config.h"
#include "gtkcolorchooserprivate.h"
#include "gtkcolorchooserwidget.h"
#include "gtkcoloreditorprivate.h"
#include "gtkcolorswatchprivate.h"
#include "gtkgrid.h"
#include "gtklabel.h"
#include "gtkorientable.h"
#include "gtkprivate.h"
#include "gtkintl.h"
#include "gtksizegroup.h"
#include "gtkboxlayout.h"
#include "gtkwidgetprivate.h"
#include "gdkrgbaprivate.h"
#include <math.h>
/**
* GtkColorChooserWidget:
*
* The `GtkColorChooserWidget` widget lets the user select a color.
*
* By default, the chooser presents a predefined palette of colors,
* plus a small number of settable custom colors. It is also possible
* to select a different color with the single-color editor.
*
* To enter the single-color editing mode, use the context menu of any
* color of the palette, or use the '+' button to add a new custom color.
*
* The chooser automatically remembers the last selection, as well
* as custom colors.
*
* To create a `GtkColorChooserWidget`, use [ctor@Gtk.ColorChooserWidget.new].
*
* To change the initially selected color, use
* [method@Gtk.ColorChooser.set_rgba]. To get the selected color use
* [method@Gtk.ColorChooser.get_rgba].
*
* The `GtkColorChooserWidget` is used in the [class@Gtk.ColorChooserDialog]
* to provide a dialog for selecting colors.
*
* # CSS names
*
* `GtkColorChooserWidget` has a single CSS node with name colorchooser.
*/
typedef struct _GtkColorChooserWidgetClass GtkColorChooserWidgetClass;
struct _GtkColorChooserWidget
{
GtkWidget parent_instance;
GtkWidget *palette;
GtkWidget *editor;
GtkSizeGroup *size_group;
GtkWidget *custom_label;
GtkWidget *custom;
GtkWidget *button;
GtkColorSwatch *current;
gboolean use_alpha;
gboolean has_default_palette;
GSettings *settings;
int max_custom;
};
struct _GtkColorChooserWidgetClass
{
GtkWidgetClass parent_class;
};
enum
{
PROP_ZERO,
PROP_RGBA,
PROP_USE_ALPHA,
PROP_SHOW_EDITOR
};
static void gtk_color_chooser_widget_iface_init (GtkColorChooserInterface *iface);
G_DEFINE_TYPE_WITH_CODE (GtkColorChooserWidget, gtk_color_chooser_widget, GTK_TYPE_WIDGET,
G_IMPLEMENT_INTERFACE (GTK_TYPE_COLOR_CHOOSER,
gtk_color_chooser_widget_iface_init))
static void
select_swatch (GtkColorChooserWidget *cc,
GtkColorSwatch *swatch)
{
GdkRGBA color;
double red, green, blue, alpha;
if (cc->current == swatch)
return;
if (cc->current != NULL)
gtk_widget_unset_state_flags (GTK_WIDGET (cc->current), GTK_STATE_FLAG_SELECTED);
gtk_widget_set_state_flags (GTK_WIDGET (swatch), GTK_STATE_FLAG_SELECTED, FALSE);
cc->current = swatch;
gtk_color_swatch_get_rgba (swatch, &color);
red = color.red;
green = color.green;
blue = color.blue;
alpha = color.alpha;
g_settings_set (cc->settings, "selected-color", "(bdddd)",
TRUE, red, green, blue, alpha);
if (gtk_widget_get_visible (GTK_WIDGET (cc->editor)))
gtk_color_chooser_set_rgba (GTK_COLOR_CHOOSER (cc->editor), &color);
else
g_object_notify (G_OBJECT (cc), "rgba");
}
static void
swatch_selected (GtkColorSwatch *swatch,
GtkStateFlags previous,
GtkColorChooserWidget *cc)
{
GtkStateFlags flags;
flags = gtk_widget_get_state_flags (GTK_WIDGET (swatch));
if ((flags & GTK_STATE_FLAG_SELECTED) != (previous & GTK_STATE_FLAG_SELECTED) &&
(flags & GTK_STATE_FLAG_SELECTED) != 0)
select_swatch (cc, swatch);
}
static void
connect_swatch_signals (GtkWidget *p,
gpointer data)
{
g_signal_connect (p, "state-flags-changed", G_CALLBACK (swatch_selected), data);
}
static void
connect_button_signals (GtkWidget *p,
gpointer data)
{
// g_signal_connect (p, "activate", G_CALLBACK (button_activate), data);
}
static void
save_custom_colors (GtkColorChooserWidget *cc)
{
GVariantBuilder builder;
GVariant *variant;
GdkRGBA color;
GtkWidget *child;
gboolean first;
g_variant_builder_init (&builder, G_VARIANT_TYPE ("a(dddd)"));
for (child = gtk_widget_get_first_child (cc->custom), first = TRUE;
child != NULL;
child = gtk_widget_get_next_sibling (child), first = FALSE)
{
if (first)
continue;
if (gtk_color_swatch_get_rgba (GTK_COLOR_SWATCH (child), &color))
{
double red, green, blue, alpha;
red = color.red;
green = color.green;
blue = color.blue;
alpha = color.alpha;
g_variant_builder_add (&builder, "(dddd)", red, green, blue, alpha);
}
}
variant = g_variant_builder_end (&builder);
g_settings_set_value (cc->settings, "custom-colors", variant);
}
static void
connect_custom_signals (GtkWidget *p,
gpointer data)
{
connect_swatch_signals (p, data);
g_signal_connect_swapped (p, "notify::rgba",
G_CALLBACK (save_custom_colors), data);
}
static void
gtk_color_chooser_widget_set_use_alpha (GtkColorChooserWidget *cc,
gboolean use_alpha)
{
GtkWidget *child;
GtkWidget *grid;
if (cc->use_alpha == use_alpha)
return;
cc->use_alpha = use_alpha;
gtk_color_chooser_set_use_alpha (GTK_COLOR_CHOOSER (cc->editor), use_alpha);
for (grid = gtk_widget_get_first_child (cc->palette);
grid != NULL;
grid = gtk_widget_get_next_sibling (grid))
{
for (child = gtk_widget_get_first_child (grid);
child != NULL;
child = gtk_widget_get_next_sibling (child))
{
if (GTK_IS_COLOR_SWATCH (child))
gtk_color_swatch_set_use_alpha (GTK_COLOR_SWATCH (child), use_alpha);
}
}
gtk_widget_queue_draw (GTK_WIDGET (cc));
g_object_notify (G_OBJECT (cc), "use-alpha");
}
static void
gtk_color_chooser_widget_set_show_editor (GtkColorChooserWidget *cc,
gboolean show_editor)
{
if (show_editor)
{
GdkRGBA color = { 0.75, 0.25, 0.25, 1.0 };
if (cc->current)
gtk_color_swatch_get_rgba (cc->current, &color);
gtk_color_chooser_set_rgba (GTK_COLOR_CHOOSER (cc->editor), &color);
}
gtk_widget_set_visible (cc->editor, show_editor);
gtk_widget_set_visible (cc->palette, !show_editor);
}
static void
update_from_editor (GtkColorEditor *editor,
GParamSpec *pspec,
GtkColorChooserWidget *widget)
{
if (gtk_widget_get_visible (GTK_WIDGET (editor)))
g_object_notify (G_OBJECT (widget), "rgba");
}
/* UI construction {{{1 */
static void
remove_palette (GtkColorChooserWidget *cc)
{
GList *children, *l;
GtkWidget *widget;
if (cc->current != NULL &&
gtk_widget_get_parent (GTK_WIDGET (cc->current)) != cc->custom)
cc->current = NULL;
children = NULL;
for (widget = gtk_widget_get_first_child (cc->palette);
widget != NULL;
widget = gtk_widget_get_next_sibling (widget))
children = g_list_prepend (children, widget);
for (l = children; l; l = l->next)
{
widget = l->data;
if (widget == cc->custom_label || widget == cc->custom)
continue;
gtk_box_remove (GTK_BOX (cc->palette), widget);
}
g_list_free (children);
}
static guint
scale_round (double value,
double scale)
{
value = floor (value * scale + 0.5);
value = MAX (value, 0);
value = MIN (value, scale);
return (guint)value;
}
static char *
accessible_color_name (GdkRGBA *color)
{
if (color->alpha < 1.0)
return g_strdup_printf (_("Red %d%%, Green %d%%, Blue %d%%, Alpha %d%%"),
scale_round (color->red, 100),
scale_round (color->green, 100),
scale_round (color->blue, 100),
scale_round (color->alpha, 100));
else
return g_strdup_printf (_("Red %d%%, Green %d%%, Blue %d%%"),
scale_round (color->red, 100),
scale_round (color->green, 100),
scale_round (color->blue, 100));
}
static void
add_palette (GtkColorChooserWidget *cc,
GtkOrientation orientation,
int colors_per_line,
int n_colors,
GdkRGBA *colors,
const char **names)
{
GtkWidget *grid;
GtkWidget *p;
int line, pos;
int i;
int left, right;
if (colors == NULL)
{
remove_palette (cc);
return;
}
grid = gtk_grid_new ();
gtk_widget_set_margin_bottom (grid, 12);
gtk_grid_set_row_spacing (GTK_GRID (grid), 2);
gtk_grid_set_column_spacing (GTK_GRID (grid), 4);
gtk_box_append (GTK_BOX (cc->palette), grid);
left = 0;
right = colors_per_line - 1;
if (gtk_widget_get_direction (GTK_WIDGET (cc)) == GTK_TEXT_DIR_RTL)
{
i = left;
left = right;
right = i;
}
for (i = 0; i < n_colors; i++)
{
p = gtk_color_swatch_new ();
if (names)
{
gtk_accessible_update_property (GTK_ACCESSIBLE (p),
GTK_ACCESSIBLE_PROPERTY_LABEL,
g_dpgettext2 (GETTEXT_PACKAGE, "Color name", names[i]),
-1);
}
else
{
char *name;
char *text;
name = accessible_color_name (&colors[i]);
text = g_strdup_printf (_("Color: %s"), name);
gtk_accessible_update_property (GTK_ACCESSIBLE (p),
GTK_ACCESSIBLE_PROPERTY_LABEL, text,
-1);
g_free (name);
g_free (text);
}
gtk_color_swatch_set_rgba (GTK_COLOR_SWATCH (p), &colors[i]);
connect_swatch_signals (p, cc);
line = i / colors_per_line;
pos = i % colors_per_line;
if (orientation == GTK_ORIENTATION_HORIZONTAL)
{
if (pos == left)
gtk_widget_add_css_class (p, "left");
else if (pos == right)
gtk_widget_add_css_class (p, "right");
gtk_grid_attach (GTK_GRID (grid), p, pos, line, 1, 1);
}
else
{
if (pos == 0)
gtk_widget_add_css_class (p, "top");
else if (pos == colors_per_line - 1)
gtk_widget_add_css_class (p, "bottom");
gtk_grid_attach (GTK_GRID (grid), p, line, pos, 1, 1);
}
}
if (orientation == GTK_ORIENTATION_HORIZONTAL)
cc->max_custom = MAX (cc->max_custom, colors_per_line);
else
cc->max_custom = MAX (cc->max_custom, n_colors / colors_per_line);
}
static void
remove_default_palette (GtkColorChooserWidget *cc)
{
if (!cc->has_default_palette)
return;
remove_palette (cc);
cc->has_default_palette = FALSE;
cc->max_custom = 0;
}
static void
add_default_palette (GtkColorChooserWidget *cc)
{
GdkRGBA colors[9*5] = {
GDK_RGBA("99c1f1"), GDK_RGBA("62a0ea"), GDK_RGBA("3584e4"), GDK_RGBA("1c71d8"), GDK_RGBA("1a5fb4"), /* Blue */
GDK_RGBA("8ff0a4"), GDK_RGBA("57e389"), GDK_RGBA("33d17a"), GDK_RGBA("2ec27e"), GDK_RGBA("26a269"), /* Green */
GDK_RGBA("f9f06b"), GDK_RGBA("f8e45c"), GDK_RGBA("f6d32d"), GDK_RGBA("f5c211"), GDK_RGBA("e5a50a"), /* Yellow */
GDK_RGBA("ffbe6f"), GDK_RGBA("ffa348"), GDK_RGBA("ff7800"), GDK_RGBA("e66100"), GDK_RGBA("c64600"), /* Orange */
GDK_RGBA("f66151"), GDK_RGBA("ed333b"), GDK_RGBA("e01b24"), GDK_RGBA("c01c28"), GDK_RGBA("a51d2d"), /* Red */
GDK_RGBA("dc8add"), GDK_RGBA("c061cb"), GDK_RGBA("9141ac"), GDK_RGBA("813d9c"), GDK_RGBA("613583"), /* Purple */
GDK_RGBA("cdab8f"), GDK_RGBA("b5835a"), GDK_RGBA("986a44"), GDK_RGBA("865e3c"), GDK_RGBA("63452c"), /* Brown */
GDK_RGBA("ffffff"), GDK_RGBA("f6f5f4"), GDK_RGBA("deddda"), GDK_RGBA("c0bfbc"), GDK_RGBA("9a9996"), /* Light */
GDK_RGBA("77767b"), GDK_RGBA("5e5c64"), GDK_RGBA("3d3846"), GDK_RGBA("241f31"), GDK_RGBA("000000") /* Dark */
};
const char *color_names[] = {
NC_("Color name", "Very Light Blue"),
NC_("Color name", "Light Blue"),
NC_("Color name", "Blue"),
NC_("Color name", "Dark Blue"),
NC_("Color name", "Very Dark Blue"),
NC_("Color name", "Very Light Green"),
NC_("Color name", "Light Green"),
NC_("Color name", "Green"),
NC_("Color name", "Dark Green"),
NC_("Color name", "Very Dark Green"),
NC_("Color name", "Very Light Yellow"),
NC_("Color name", "Light Yellow"),
NC_("Color name", "Yellow"),
NC_("Color name", "Dark Yellow"),
NC_("Color name", "Very Dark Yellow"),
NC_("Color name", "Very Light Orange"),
NC_("Color name", "Light Orange"),
NC_("Color name", "Orange"),
NC_("Color name", "Dark Orange"),
NC_("Color name", "Very Dark Orange"),
NC_("Color name", "Very Light Red"),
NC_("Color name", "Light Red"),
NC_("Color name", "Red"),
NC_("Color name", "Dark Red"),
NC_("Color name", "Very Dark Red"),
NC_("Color name", "Very Light Purple"),
NC_("Color name", "Light Purple"),
NC_("Color name", "Purple"),
NC_("Color name", "Dark Purple"),
NC_("Color name", "Very Dark Purple"),
NC_("Color name", "Very Light Brown"),
NC_("Color name", "Light Brown"),
NC_("Color name", "Brown"),
NC_("Color name", "Dark Brown"),
NC_("Color name", "Very Dark Brown"),
NC_("Color name", "White"),
NC_("Color name", "Light Gray 1"),
NC_("Color name", "Light Gray 2"),
NC_("Color name", "Light Gray 3"),
NC_("Color name", "Light Gray 4"),
NC_("Color name", "Dark Gray 1"),
NC_("Color name", "Dark Gray 2"),
NC_("Color name", "Dark Gray 3"),
NC_("Color name", "Dark Gray 4"),
NC_("Color name", "Black"),
};
add_palette (cc, GTK_ORIENTATION_VERTICAL, 5, 9*5, colors, color_names);
cc->has_default_palette = TRUE;
}
static void
gtk_color_chooser_widget_activate_color_customize (GtkWidget *widget,
const char *name,
GVariant *parameter)
{
GtkColorChooserWidget *cc = GTK_COLOR_CHOOSER_WIDGET (widget);
double red, green, blue, alpha;
GdkRGBA color;
g_variant_get (parameter, "(dddd)", &red, &green, &blue, &alpha);
color.red = red;
color.green = green;
color.blue = blue;
color.alpha = alpha;
gtk_color_chooser_set_rgba (GTK_COLOR_CHOOSER (cc->editor), &color);
gtk_widget_hide (cc->palette);
gtk_widget_show (cc->editor);
g_object_notify (G_OBJECT (cc), "show-editor");
}
static void
gtk_color_chooser_widget_activate_color_select (GtkWidget *widget,
const char *name,
GVariant *parameter)
{
GtkColorChooserWidget *cc = GTK_COLOR_CHOOSER_WIDGET (widget);
GdkRGBA color;
double red, green, blue, alpha;
g_variant_get (parameter, "(dddd)", &red, &green, &blue, &alpha);
color.red = red;
color.green = green;
color.blue = blue;
color.alpha = alpha;
_gtk_color_chooser_color_activated (GTK_COLOR_CHOOSER (cc), &color);
}
static void
gtk_color_chooser_widget_init (GtkColorChooserWidget *cc)
{
GtkWidget *box;
GtkWidget *p;
GtkWidget *button;
GtkWidget *label;
int i;
double color[4];
GdkRGBA rgba;
GVariant *variant;
GVariantIter iter;
gboolean selected;
char *name;
char *text;
cc->use_alpha = TRUE;
cc->palette = gtk_box_new (GTK_ORIENTATION_VERTICAL, 0);
gtk_widget_set_parent (cc->palette, GTK_WIDGET (cc));
add_default_palette (cc);
/* translators: label for the custom section in the color chooser */
cc->custom_label = label = gtk_label_new (_("Custom"));
gtk_widget_set_halign (label, GTK_ALIGN_START);
gtk_box_append (GTK_BOX (cc->palette), label);
cc->custom = box = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 4);
g_object_set (box, "margin-top", 12, NULL);
gtk_box_append (GTK_BOX (cc->palette), box);
cc->button = button = gtk_color_swatch_new ();
gtk_widget_set_name (button, "add-color-button");
connect_button_signals (button, cc);
gtk_color_swatch_set_icon (GTK_COLOR_SWATCH (button), "list-add-symbolic");
gtk_color_swatch_set_selectable (GTK_COLOR_SWATCH (button), FALSE);
gtk_box_append (GTK_BOX (box), button);
cc->settings = g_settings_new ("org.gtk.gtk4.Settings.ColorChooser");
variant = g_settings_get_value (cc->settings, I_("custom-colors"));
g_variant_iter_init (&iter, variant);
i = 0;
p = NULL;
while (g_variant_iter_loop (&iter, "(dddd)", &color[0], &color[1], &color[2], &color[3]))
{
i++;
p = gtk_color_swatch_new ();
rgba.red = color[0];
rgba.green = color[1];
rgba.blue = color[2];
rgba.alpha = color[3];
gtk_color_swatch_set_rgba (GTK_COLOR_SWATCH (p), &rgba);
name = accessible_color_name (&rgba);
text = g_strdup_printf (_("Custom color %d: %s"), i, name);
gtk_accessible_update_property (GTK_ACCESSIBLE (p),
GTK_ACCESSIBLE_PROPERTY_LABEL, text,
-1);
g_free (name);
g_free (text);
gtk_color_swatch_set_can_drop (GTK_COLOR_SWATCH (p), TRUE);
connect_custom_signals (p, cc);
gtk_box_append (GTK_BOX (box), p);
if (i == 8)
break;
}
g_variant_unref (variant);
cc->editor = gtk_color_editor_new ();
gtk_widget_set_halign (cc->editor, GTK_ALIGN_CENTER);
gtk_widget_set_hexpand (cc->editor, TRUE);
g_signal_connect (cc->editor, "notify::rgba",
G_CALLBACK (update_from_editor), cc);
gtk_widget_set_parent (cc->editor, GTK_WIDGET (cc));
g_settings_get (cc->settings, I_("selected-color"), "(bdddd)",
&selected,
&color[0], &color[1], &color[2], &color[3]);
if (selected)
{
rgba.red = color[0];
rgba.green = color[1];
rgba.blue = color[2];
rgba.alpha = color[3];
gtk_color_chooser_set_rgba (GTK_COLOR_CHOOSER (cc), &rgba);
}
gtk_widget_hide (GTK_WIDGET (cc->editor));
}
/* GObject implementation {{{1 */
static void
gtk_color_chooser_widget_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec)
{
GtkColorChooserWidget *cc = GTK_COLOR_CHOOSER_WIDGET (object);
switch (prop_id)
{
case PROP_RGBA:
{
GdkRGBA color;
gtk_color_chooser_get_rgba (GTK_COLOR_CHOOSER (cc), &color);
g_value_set_boxed (value, &color);
}
break;
case PROP_USE_ALPHA:
g_value_set_boolean (value, cc->use_alpha);
break;
case PROP_SHOW_EDITOR:
g_value_set_boolean (value, gtk_widget_get_visible (cc->editor));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gtk_color_chooser_widget_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec)
{
GtkColorChooserWidget *cc = GTK_COLOR_CHOOSER_WIDGET (object);
switch (prop_id)
{
case PROP_RGBA:
gtk_color_chooser_set_rgba (GTK_COLOR_CHOOSER (cc),
g_value_get_boxed (value));
break;
case PROP_USE_ALPHA:
gtk_color_chooser_widget_set_use_alpha (cc,
g_value_get_boolean (value));
break;
case PROP_SHOW_EDITOR:
gtk_color_chooser_widget_set_show_editor (cc,
g_value_get_boolean (value));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gtk_color_chooser_widget_finalize (GObject *object)
{
GtkColorChooserWidget *cc = GTK_COLOR_CHOOSER_WIDGET (object);
g_object_unref (cc->settings);
gtk_widget_unparent (cc->editor);
gtk_widget_unparent (cc->palette);
G_OBJECT_CLASS (gtk_color_chooser_widget_parent_class)->finalize (object);
}
static void
gtk_color_chooser_widget_class_init (GtkColorChooserWidgetClass *class)
{
GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (class);
GObjectClass *object_class = G_OBJECT_CLASS (class);
object_class->get_property = gtk_color_chooser_widget_get_property;
object_class->set_property = gtk_color_chooser_widget_set_property;
object_class->finalize = gtk_color_chooser_widget_finalize;
widget_class->grab_focus = gtk_widget_grab_focus_child;
widget_class->focus = gtk_widget_focus_child;
g_object_class_override_property (object_class, PROP_RGBA, "rgba");
g_object_class_override_property (object_class, PROP_USE_ALPHA, "use-alpha");
/**
* GtkColorChooserWidget:show-editor:
*
* %TRUE when the color chooser is showing the single-color editor.
*
* It can be set to switch the color chooser into single-color editing mode.
*/
g_object_class_install_property (object_class, PROP_SHOW_EDITOR,
g_param_spec_boolean ("show-editor", NULL, NULL,
FALSE, GTK_PARAM_READWRITE));
gtk_widget_class_set_css_name (widget_class, I_("colorchooser"));
gtk_widget_class_set_layout_manager_type (widget_class, GTK_TYPE_BOX_LAYOUT);
/**
* GtkColorChooserWidget|color.select:
* @red: the red value, between 0 and 1
* @green: the green value, between 0 and 1
* @blue: the blue value, between 0 and 1
* @alpha: the alpha value, between 0 and 1
*
* Emits the [signal@Gtk.ColorChooser::color-activated] signal for
* the given color.
*/
gtk_widget_class_install_action (widget_class, "color.select", "(dddd)",
gtk_color_chooser_widget_activate_color_select);
/**
* GtkColorChooserWidget|color.customize:
* @red: the red value, between 0 and 1
* @green: the green value, between 0 and 1
* @blue: the blue value, between 0 and 1
* @alpha: the alpha value, between 0 and 1
*
* Activates the color editor for the given color.
*/
gtk_widget_class_install_action (widget_class, "color.customize", "(dddd)",
gtk_color_chooser_widget_activate_color_customize);
}
/* GtkColorChooser implementation {{{1 */
static void
gtk_color_chooser_widget_get_rgba (GtkColorChooser *chooser,
GdkRGBA *color)
{
GtkColorChooserWidget *cc = GTK_COLOR_CHOOSER_WIDGET (chooser);
if (gtk_widget_get_visible (cc->editor))
gtk_color_chooser_get_rgba (GTK_COLOR_CHOOSER (cc->editor), color);
else if (cc->current)
gtk_color_swatch_get_rgba (cc->current, color);
else
{
color->red = 1.0;
color->green = 1.0;
color->blue = 1.0;
color->alpha = 1.0;
}
if (!cc->use_alpha)
color->alpha = 1.0;
}
static void
add_custom_color (GtkColorChooserWidget *cc,
const GdkRGBA *color)
{
GtkWidget *widget;
GtkWidget *p;
int n;
n = 0;
for (widget = gtk_widget_get_first_child (cc->custom);
widget != NULL;
widget = gtk_widget_get_next_sibling (widget))
n++;
while (n >= cc->max_custom)
{
GtkWidget *last = gtk_widget_get_last_child (cc->custom);
if (last == (GtkWidget *)cc->current)
cc->current = NULL;
gtk_box_remove (GTK_BOX (cc->custom), last);
n--;
}
p = gtk_color_swatch_new ();
gtk_color_swatch_set_rgba (GTK_COLOR_SWATCH (p), color);
gtk_color_swatch_set_can_drop (GTK_COLOR_SWATCH (p), TRUE);
connect_custom_signals (p, cc);
gtk_box_insert_child_after (GTK_BOX (cc->custom), p, gtk_widget_get_first_child (cc->custom));
gtk_widget_show (p);
select_swatch (cc, GTK_COLOR_SWATCH (p));
save_custom_colors (cc);
}
static void
gtk_color_chooser_widget_set_rgba (GtkColorChooser *chooser,
const GdkRGBA *color)
{
GtkColorChooserWidget *cc = GTK_COLOR_CHOOSER_WIDGET (chooser);
GtkWidget *swatch;
GtkWidget *w;
GdkRGBA c;
for (w = gtk_widget_get_first_child (cc->palette);
w != NULL;
w = gtk_widget_get_next_sibling (w))
{
if (!GTK_IS_GRID (w) && !GTK_IS_BOX (w))
continue;
for (swatch = gtk_widget_get_first_child (w);
swatch != NULL;
swatch = gtk_widget_get_next_sibling (swatch))
{
gtk_color_swatch_get_rgba (GTK_COLOR_SWATCH (swatch), &c);
if (!cc->use_alpha)
c.alpha = color->alpha;
if (gdk_rgba_equal (color, &c))
{
select_swatch (cc, GTK_COLOR_SWATCH (swatch));
return;
}
}
}
add_custom_color (cc, color);
}
static void
gtk_color_chooser_widget_add_palette (GtkColorChooser *chooser,
GtkOrientation orientation,
int colors_per_line,
int n_colors,
GdkRGBA *colors)
{
GtkColorChooserWidget *cc = GTK_COLOR_CHOOSER_WIDGET (chooser);
remove_default_palette (cc);
add_palette (cc, orientation, colors_per_line, n_colors, colors, NULL);
gtk_box_reorder_child_after (GTK_BOX (cc->palette), cc->custom_label, gtk_widget_get_last_child (cc->palette));
gtk_box_reorder_child_after (GTK_BOX (cc->palette), cc->custom, cc->custom_label);
}
static void
gtk_color_chooser_widget_iface_init (GtkColorChooserInterface *iface)
{
iface->get_rgba = gtk_color_chooser_widget_get_rgba;
iface->set_rgba = gtk_color_chooser_widget_set_rgba;
iface->add_palette = gtk_color_chooser_widget_add_palette;
}
/* Public API {{{1 */
/**
* gtk_color_chooser_widget_new:
*
* Creates a new `GtkColorChooserWidget`.
*
* Returns: a new `GtkColorChooserWidget`
*/
GtkWidget *
gtk_color_chooser_widget_new (void)
{
return g_object_new (GTK_TYPE_COLOR_CHOOSER_WIDGET, NULL);
}
/* vim:set foldmethod=marker: */
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