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gtk2/gtk/gtkcolorchooserwidget.c
Matthias Clasen 8591f452f0 ColorChooser: Emit notification for editor changes 
When the color editor is visible, there is no way for the
application to know about the changes that are happening.
Fix this by emitting property notification for the "rgba"
property.

http://bugzilla.gnome.org/show_bug.cgi?id=708037
2014-05-21 19:23:56 -04:00

833 lines
25 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 "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 prefined 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 font use gtk_color_chooser_get_rgba().
*
* The #GtkColorChooserWidget is used in the #GtkColorChooserDialog
* to provide a dialog for selecting colors.
*
* 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_queue_draw (GTK_WIDGET (cc->priv->current));
}
gtk_widget_set_state_flags (GTK_WIDGET (swatch), GTK_STATE_FLAG_SELECTED, FALSE);
cc->priv->current = swatch;
gtk_widget_queue_draw (GTK_WIDGET (cc->priv->current));
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);
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;
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));
}
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 (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][3] = {
{ "#ef2929", "#cc0000", "#a40000" }, /* Scarlet Red */
{ "#fcaf3e", "#f57900", "#ce5c00" }, /* Orange */
{ "#fce94f", "#edd400", "#c4a000" }, /* Butter */
{ "#8ae234", "#73d216", "#4e9a06" }, /* Chameleon */
{ "#729fcf", "#3465a4", "#204a87" }, /* Sky Blue */
{ "#ad7fa8", "#75507b", "#5c3566" }, /* Plum */
{ "#e9b96e", "#c17d11", "#8f5902" }, /* Chocolate */
{ "#888a85", "#555753", "#2e3436" }, /* Aluminum 1 */
{ "#eeeeec", "#d3d7cf", "#babdb6" } /* Aluminum 2 */
};
const gchar *color_names[] = {
NC_("Color name", "Light Scarlet Red"),
NC_("Color name", "Scarlet Red"),
NC_("Color name", "Dark Scarlet Red"),
NC_("Color name", "Light Orange"),
NC_("Color name", "Orange"),
NC_("Color name", "Dark Orange"),
NC_("Color name", "Light Butter"),
NC_("Color name", "Butter"),
NC_("Color name", "Dark Butter"),
NC_("Color name", "Light Chameleon"),
NC_("Color name", "Chameleon"),
NC_("Color name", "Dark Chameleon"),
NC_("Color name", "Light Sky Blue"),
NC_("Color name", "Sky Blue"),
NC_("Color name", "Dark Sky Blue"),
NC_("Color name", "Light Plum"),
NC_("Color name", "Plum"),
NC_("Color name", "Dark Plum"),
NC_("Color name", "Light Chocolate"),
NC_("Color name", "Chocolate"),
NC_("Color name", "Dark Chocolate"),
NC_("Color name", "Light Aluminum 1"),
NC_("Color name", "Aluminum 1"),
NC_("Color name", "Dark Aluminum 1"),
NC_("Color name", "Light Aluminum 2"),
NC_("Color name", "Aluminum 2"),
NC_("Color name", "Dark Aluminum 2")
};
const gchar *default_grays[9] = {
"#000000", /* black */
"#2e3436", /* very dark gray */
"#555753", /* darker gray */
"#888a85", /* dark gray */
"#babdb6", /* medium gray */
"#d3d7cf", /* light gray */
"#eeeeec", /* lighter gray */
"#f3f3f3", /* very light gray */
"#ffffff" /* white */
};
const gchar *gray_names[] = {
NC_("Color name", "Black"),
NC_("Color name", "Very Dark Gray"),
NC_("Color name", "Darker Gray"),
NC_("Color name", "Dark Gray"),
NC_("Color name", "Medium Gray"),
NC_("Color name", "Light Gray"),
NC_("Color name", "Lighter Gray"),
NC_("Color name", "Very Light Gray"),
NC_("Color name", "White")
};
GdkRGBA colors[9*3];
gint i, j;
for (i = 0; i < 9; i++)
for (j = 0; j < 3; j++)
gdk_rgba_parse (&colors[i*3 + j], default_colors[i][j]);
add_palette (cc, GTK_ORIENTATION_VERTICAL, 3, 9*3, colors, color_names);
for (i = 0; i < 9; i++)
gdk_rgba_parse (&colors[i], default_grays[i]);
add_palette (cc, GTK_ORIENTATION_HORIZONTAL, 9, 9, colors, gray_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 == 8)
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));
}
/* 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) >= 8)
{
last = g_list_last (children)->data;
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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