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gtk2/gtk/gtkcolorchooserwidget.c
Matthias Clasen c91e65ba10 colorchooser: Bring color names back 
These are useful for accessibility.
2020-10-07 15:36:23 -04:00

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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 "gtkbox.h"
#include "gtkgrid.h"
#include "gtklabel.h"
#include "gtkorientable.h"
#include "gtkprivate.h"
#include "gtkintl.h"
#include "gtksizegroup.h"
#include <math.h>
/**
* SECTION:gtkcolorchooserwidget
* @Short_description: A widget for choosing colors
* @Title: GtkColorChooserWidget
* @See_also: #GtkColorChooserDialog
*
* 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 change the initially selected color, use gtk_color_chooser_set_rgba().
* To get the selected color use gtk_color_chooser_get_rgba().
*
* The #GtkColorChooserWidget is used in the #GtkColorChooserDialog
* to provide a dialog for selecting colors.
*
* # CSS names
*
* GtkColorChooserWidget has a single CSS node with name colorchooser.
*
* Since: 3.4
*/
struct _GtkColorChooserWidgetPrivate
{
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;
};
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_BOX,
G_ADD_PRIVATE (GtkColorChooserWidget)
G_IMPLEMENT_INTERFACE (GTK_TYPE_COLOR_CHOOSER,
gtk_color_chooser_widget_iface_init))
static void
select_swatch (GtkColorChooserWidget *cc,
GtkColorSwatch *swatch)
{
GdkRGBA color;
if (cc->priv->current == swatch)
return;
if (cc->priv->current != NULL)
gtk_widget_unset_state_flags (GTK_WIDGET (cc->priv->current), GTK_STATE_FLAG_SELECTED);
gtk_widget_set_state_flags (GTK_WIDGET (swatch), GTK_STATE_FLAG_SELECTED, FALSE);
cc->priv->current = swatch;
gtk_color_swatch_get_rgba (swatch, &color);
g_settings_set (cc->priv->settings, "selected-color", "(bdddd)",
TRUE, color.red, color.green, color.blue, color.alpha);
if (gtk_widget_get_visible (GTK_WIDGET (cc->priv->editor)))
gtk_color_chooser_set_rgba (GTK_COLOR_CHOOSER (cc->priv->editor), &color);
else
g_object_notify (G_OBJECT (cc), "rgba");
}
static void
swatch_activate (GtkColorSwatch *swatch,
GtkColorChooserWidget *cc)
{
GdkRGBA color;
gtk_color_swatch_get_rgba (swatch, &color);
_gtk_color_chooser_color_activated (GTK_COLOR_CHOOSER (cc), &color);
}
static void
swatch_customize (GtkColorSwatch *swatch,
GtkColorChooserWidget *cc)
{
GdkRGBA color;
gtk_color_swatch_get_rgba (swatch, &color);
gtk_color_chooser_set_rgba (GTK_COLOR_CHOOSER (cc->priv->editor), &color);
gtk_widget_hide (cc->priv->palette);
gtk_widget_show (cc->priv->editor);
g_object_notify (G_OBJECT (cc), "show-editor");
}
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, "activate", G_CALLBACK (swatch_activate), data);
g_signal_connect (p, "customize", G_CALLBACK (swatch_customize), data);
g_signal_connect (p, "state-flags-changed", G_CALLBACK (swatch_selected), data);
}
static void
button_activate (GtkColorSwatch *swatch,
GtkColorChooserWidget *cc)
{
/* somewhat random, makes the hairline nicely visible */
GdkRGBA color = { 0.75, 0.25, 0.25, 1.0 };
gtk_color_chooser_set_rgba (GTK_COLOR_CHOOSER (cc->priv->editor), &color);
gtk_widget_hide (cc->priv->palette);
gtk_widget_show (cc->priv->editor);
g_object_notify (G_OBJECT (cc), "show-editor");
}
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;
GList *children, *l;
GtkWidget *child;
g_variant_builder_init (&builder, G_VARIANT_TYPE ("a(dddd)"));
children = gtk_container_get_children (GTK_CONTAINER (cc->priv->custom));
for (l = g_list_nth (children, 1); l != NULL; l = l->next)
{
child = l->data;
if (gtk_color_swatch_get_rgba (GTK_COLOR_SWATCH (child), &color))
g_variant_builder_add (&builder, "(dddd)",
color.red, color.green, color.blue, color.alpha);
}
variant = g_variant_builder_end (&builder);
g_settings_set_value (cc->priv->settings, "custom-colors", variant);
g_list_free (children);
}
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)
{
GList *children, *l;
GList *palettes, *p;
GtkWidget *swatch;
GtkWidget *grid;
if (cc->priv->use_alpha == use_alpha)
return;
cc->priv->use_alpha = use_alpha;
gtk_color_chooser_set_use_alpha (GTK_COLOR_CHOOSER (cc->priv->editor), use_alpha);
palettes = gtk_container_get_children (GTK_CONTAINER (cc->priv->palette));
for (p = palettes; p; p = p->next)
{
grid = p->data;
if (!GTK_IS_CONTAINER (grid))
continue;
children = gtk_container_get_children (GTK_CONTAINER (grid));
for (l = children; l; l = l->next)
{
swatch = l->data;
gtk_color_swatch_set_use_alpha (GTK_COLOR_SWATCH (swatch), use_alpha);
}
g_list_free (children);
}
g_list_free (palettes);
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->priv->current)
gtk_color_swatch_get_rgba (cc->priv->current, &color);
gtk_color_chooser_set_rgba (GTK_COLOR_CHOOSER (cc->priv->editor), &color);
}
gtk_widget_set_visible (cc->priv->editor, show_editor);
gtk_widget_set_visible (cc->priv->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 guint
scale_round (gdouble value, gdouble scale)
{
value = floor (value * scale + 0.5);
value = MAX (value, 0);
value = MIN (value, scale);
return (guint)value;
}
static gchar *
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
remove_palette (GtkColorChooserWidget *cc)
{
GList *children, *l;
GtkWidget *widget;
if (cc->priv->current != NULL &&
gtk_widget_get_parent (GTK_WIDGET (cc->priv->current)) != cc->priv->custom)
cc->priv->current = NULL;
children = gtk_container_get_children (GTK_CONTAINER (cc->priv->palette));
for (l = children; l; l = l->next)
{
widget = l->data;
if (widget == cc->priv->custom_label || widget == cc->priv->custom)
continue;
gtk_container_remove (GTK_CONTAINER (cc->priv->palette), widget);
}
g_list_free (children);
}
static void
add_palette (GtkColorChooserWidget *cc,
GtkOrientation orientation,
gint colors_per_line,
gint n_colors,
GdkRGBA *colors,
const gchar **names)
{
GtkWidget *grid;
GtkWidget *p;
AtkObject *atk_obj;
gint line, pos;
gint i;
gint 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_container_add (GTK_CONTAINER (cc->priv->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 ();
atk_obj = gtk_widget_get_accessible (p);
if (names)
{
atk_object_set_name (atk_obj,
g_dpgettext2 (GETTEXT_PACKAGE, "Color name", names[i]));
}
else
{
gchar *text, *name;
name = accessible_color_name (&colors[i]);
text = g_strdup_printf (_("Color: %s"), name);
atk_object_set_name (atk_obj, text);
g_free (text);
g_free (name);
}
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_style_context_add_class (gtk_widget_get_style_context (p), GTK_STYLE_CLASS_LEFT);
else if (pos == right)
gtk_style_context_add_class (gtk_widget_get_style_context (p), GTK_STYLE_CLASS_RIGHT);
gtk_grid_attach (GTK_GRID (grid), p, pos, line, 1, 1);
}
else
{
if (pos == 0)
gtk_style_context_add_class (gtk_widget_get_style_context (p), GTK_STYLE_CLASS_TOP);
else if (pos == colors_per_line - 1)
gtk_style_context_add_class (gtk_widget_get_style_context (p), GTK_STYLE_CLASS_BOTTOM);
gtk_grid_attach (GTK_GRID (grid), p, line, pos, 1, 1);
}
}
gtk_widget_show_all (grid);
}
static void
remove_default_palette (GtkColorChooserWidget *cc)
{
if (!cc->priv->has_default_palette)
return;
remove_palette (cc);
cc->priv->has_default_palette = FALSE;
}
static void
add_default_palette (GtkColorChooserWidget *cc)
{
const gchar *default_colors[9][5] = {
{ "#99c1f1", "#62a0ea", "#3584e4", "#1c71d8", "#1a5fb4" }, /* Blue */
{ "#8ff0a4", "#57e389", "#33d17a", "#2ec27e", "#26a269" }, /* Green */
{ "#f9f06b", "#f8e45c", "#f6d32d", "#f5c211", "#e5a50a" }, /* Yellow */
{ "#ffbe6f", "#ffa348", "#ff7800", "#e66100", "#c64600" }, /* Orange */
{ "#f66151", "#ed333b", "#e01b24", "#c01c28", "#a51d2d" }, /* Red */
{ "#dc8add", "#c061cb", "#9141ac", "#813d9c", "#613583" }, /* Purple */
{ "#cdab8f", "#b5835a", "#986a44", "#865e3c", "#63452c" }, /* Brown */
{ "#ffffff", "#f6f5f4", "#deddda", "#c0bfbc", "#9a9996" }, /* Light */
{ "#77767b", "#5e5c64", "#3d3846", "#241f31", "#000000" } /* Dark */
};
const gchar *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"),
};
GdkRGBA colors[9*5];
gint i, j;
for (i = 0; i < 9; i++)
for (j = 0; j < 5; j++)
gdk_rgba_parse (&colors[i*5 + j], default_colors[i][j]);
add_palette (cc, GTK_ORIENTATION_VERTICAL, 5, 9*5, colors, color_names);
cc->priv->has_default_palette = TRUE;
}
static void
gtk_color_chooser_widget_init (GtkColorChooserWidget *cc)
{
GtkWidget *box;
GtkWidget *p;
GtkWidget *button;
GtkWidget *label;
gint i;
GdkRGBA color;
GVariant *variant;
GVariantIter iter;
gboolean selected;
AtkObject *atk_obj;
gchar *text, *name;
cc->priv = gtk_color_chooser_widget_get_instance_private (cc);
cc->priv->use_alpha = TRUE;
gtk_orientable_set_orientation (GTK_ORIENTABLE (cc), GTK_ORIENTATION_VERTICAL);
cc->priv->palette = gtk_box_new (GTK_ORIENTATION_VERTICAL, 0);
gtk_container_add (GTK_CONTAINER (cc), cc->priv->palette);
add_default_palette (cc);
cc->priv->custom = box = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 4);
g_object_set (box, "margin-top", 12, NULL);
gtk_box_pack_end (GTK_BOX (cc->priv->palette), box, FALSE, TRUE, 0);
/* translators: label for the custom section in the color chooser */
cc->priv->custom_label = label = gtk_label_new (_("Custom"));
gtk_widget_set_halign (label, GTK_ALIGN_START);
gtk_box_pack_end (GTK_BOX (cc->priv->palette), label, FALSE, TRUE, 0);
cc->priv->button = button = gtk_color_swatch_new ();
gtk_widget_set_name (button, "add-color-button");
atk_obj = gtk_widget_get_accessible (button);
atk_object_set_name (atk_obj, _("Custom color"));
atk_object_set_description (atk_obj, _("Create a custom color"));
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_container_add (GTK_CONTAINER (box), button);
cc->priv->settings = g_settings_new ("org.gtk.Settings.ColorChooser");
variant = g_settings_get_value (cc->priv->settings, "custom-colors");
g_variant_iter_init (&iter, variant);
i = 0;
p = NULL;
while (g_variant_iter_loop (&iter, "(dddd)", &color.red, &color.green, &color.blue, &color.alpha))
{
i++;
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);
atk_obj = gtk_widget_get_accessible (p);
name = accessible_color_name (&color);
text = g_strdup_printf (_("Custom color %d: %s"), i, name);
atk_object_set_name (atk_obj, text);
g_free (text);
g_free (name);
connect_custom_signals (p, cc);
gtk_container_add (GTK_CONTAINER (box), p);
if (i == 9)
break;
}
g_variant_unref (variant);
cc->priv->editor = gtk_color_editor_new ();
gtk_widget_set_halign (cc->priv->editor, GTK_ALIGN_CENTER);
gtk_widget_set_hexpand (cc->priv->editor, TRUE);
g_signal_connect (cc->priv->editor, "notify::rgba",
G_CALLBACK (update_from_editor), cc);
box = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 0);
gtk_container_add (GTK_CONTAINER (cc), box);
gtk_container_add (GTK_CONTAINER (box), cc->priv->editor);
g_settings_get (cc->priv->settings, "selected-color", "(bdddd)",
&selected,
&color.red, &color.green, &color.blue, &color.alpha);
if (selected)
gtk_color_chooser_set_rgba (GTK_COLOR_CHOOSER (cc), &color);
gtk_widget_show_all (GTK_WIDGET (cc));
gtk_widget_hide (GTK_WIDGET (cc->priv->editor));
gtk_widget_hide (GTK_WIDGET (cc));
gtk_widget_set_no_show_all (cc->priv->palette, TRUE);
gtk_widget_set_no_show_all (cc->priv->editor, TRUE);
cc->priv->size_group = gtk_size_group_new (GTK_SIZE_GROUP_HORIZONTAL);
gtk_size_group_add_widget (cc->priv->size_group, cc->priv->palette);
gtk_size_group_add_widget (cc->priv->size_group, box);
}
/* GObject implementation {{{1 */
static void
gtk_color_chooser_widget_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec)
{
GtkColorChooserWidget *cw = GTK_COLOR_CHOOSER_WIDGET (object);
GtkColorChooser *cc = GTK_COLOR_CHOOSER (object);
switch (prop_id)
{
case PROP_RGBA:
{
GdkRGBA color;
gtk_color_chooser_get_rgba (cc, &color);
g_value_set_boxed (value, &color);
}
break;
case PROP_USE_ALPHA:
g_value_set_boolean (value, cw->priv->use_alpha);
break;
case PROP_SHOW_EDITOR:
g_value_set_boolean (value, gtk_widget_get_visible (cw->priv->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->priv->size_group);
g_object_unref (cc->priv->settings);
G_OBJECT_CLASS (gtk_color_chooser_widget_parent_class)->finalize (object);
}
static void
gtk_color_chooser_widget_class_init (GtkColorChooserWidgetClass *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;
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:
*
* The ::show-editor property is %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.
*
* Since: 3.4
*/
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 (GTK_WIDGET_CLASS (class), "colorchooser");
}
/* 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->priv->editor))
gtk_color_chooser_get_rgba (GTK_COLOR_CHOOSER (cc->priv->editor), color);
else if (cc->priv->current)
gtk_color_swatch_get_rgba (cc->priv->current, color);
else
{
color->red = 1.0;
color->green = 1.0;
color->blue = 1.0;
color->alpha = 1.0;
}
if (!cc->priv->use_alpha)
color->alpha = 1.0;
}
static void
add_custom_color (GtkColorChooserWidget *cc,
const GdkRGBA *color)
{
GtkWidget *last;
GtkWidget *p;
GList *children;
children = gtk_container_get_children (GTK_CONTAINER (cc->priv->custom));
if (g_list_length (children) >= 9)
{
last = g_list_last (children)->data;
if (last == GTK_WIDGET (cc->priv->current))
cc->priv->current = NULL;
gtk_widget_destroy (last);
}
g_list_free (children);
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_container_add (GTK_CONTAINER (cc->priv->custom), p);
gtk_box_reorder_child (GTK_BOX (cc->priv->custom), p, 1);
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);
GList *children, *l;
GList *palettes, *p;
GtkColorSwatch *swatch;
GtkWidget *w;
GdkRGBA c;
palettes = gtk_container_get_children (GTK_CONTAINER (cc->priv->palette));
for (p = palettes; p; p = p->next)
{
w = p->data;
if (!GTK_IS_GRID (w) && !GTK_IS_BOX (w))
continue;
children = gtk_container_get_children (GTK_CONTAINER (w));
for (l = children; l; l = l->next)
{
swatch = l->data;
gtk_color_swatch_get_rgba (swatch, &c);
if (!cc->priv->use_alpha)
c.alpha = color->alpha;
if (gdk_rgba_equal (color, &c))
{
select_swatch (cc, swatch);
g_list_free (children);
g_list_free (palettes);
return;
}
}
g_list_free (children);
}
g_list_free (palettes);
add_custom_color (cc, color);
}
static void
gtk_color_chooser_widget_add_palette (GtkColorChooser *chooser,
GtkOrientation orientation,
gint colors_per_line,
gint 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);
}
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
*
* Since: 3.4
*/
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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