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gtk2/gtk/gtkcolorchooserwidget.c
Matthias Clasen 886ba1680d colorchooserwidget: Convert docs 
Convert links, and clean things up.
2021-03-11 16:37:33 +00:00

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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", P_("Show editor"), P_("Show editor"),
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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