gtk2/gtk/gtkcolorswatch.c
Alexander Larsson 3d4cd4db3e Add gtk_widget_(un)register_window
This replaces the previously hardcoded calls to gdk_window_set_user_data,
and also lets us track which windows are a part of a widget. Old code
should continue working as is, but new features that require the
windows may not work perfectly.

We need this for the transparent widget support to work, as we need
to specially mark the windows of child widgets.

https://bugzilla.gnome.org/show_bug.cgi?id=687842
2013-02-07 11:11:37 +01:00

906 lines
25 KiB
C

/* 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 "gtkcolorswatchprivate.h"
#include "gtkcolorchooserprivate.h"
#include "gtkroundedboxprivate.h"
#include "gtkthemingbackgroundprivate.h"
#include "gtkdnd.h"
#include "gtkicontheme.h"
#include "gtkmain.h"
#include "gtkmenu.h"
#include "gtkmenuitem.h"
#include "gtkmenushell.h"
#include "gtkpressandholdprivate.h"
#include "gtkprivate.h"
#include "gtkintl.h"
#include "a11y/gtkcolorswatchaccessibleprivate.h"
struct _GtkColorSwatchPrivate
{
GdkRGBA color;
gdouble radius[4];
gchar *icon;
guint has_color : 1;
guint contains_pointer : 1;
guint use_alpha : 1;
guint selectable : 1;
GdkWindow *event_window;
GtkPressAndHold *press_and_hold;
};
enum
{
PROP_ZERO,
PROP_RGBA,
PROP_SELECTABLE
};
enum
{
ACTIVATE,
CUSTOMIZE,
LAST_SIGNAL
};
static guint signals[LAST_SIGNAL];
G_DEFINE_TYPE (GtkColorSwatch, gtk_color_swatch, GTK_TYPE_WIDGET)
static void
gtk_color_swatch_init (GtkColorSwatch *swatch)
{
swatch->priv = G_TYPE_INSTANCE_GET_PRIVATE (swatch,
GTK_TYPE_COLOR_SWATCH,
GtkColorSwatchPrivate);
gtk_widget_set_can_focus (GTK_WIDGET (swatch), TRUE);
gtk_widget_set_has_window (GTK_WIDGET (swatch), FALSE);
swatch->priv->use_alpha = TRUE;
swatch->priv->selectable = TRUE;
}
#define INTENSITY(r, g, b) ((r) * 0.30 + (g) * 0.59 + (b) * 0.11)
#define ACTIVE_BADGE_RADIUS 10
static gboolean
swatch_draw (GtkWidget *widget,
cairo_t *cr)
{
GtkColorSwatch *swatch = (GtkColorSwatch*)widget;
GtkThemingBackground background;
gdouble width, height;
GtkStyleContext *context;
GtkStateFlags state;
GtkIconTheme *theme;
GtkIconInfo *icon_info = NULL;
theme = gtk_icon_theme_get_default ();
context = gtk_widget_get_style_context (widget);
state = gtk_widget_get_state_flags (widget);
width = gtk_widget_get_allocated_width (widget);
height = gtk_widget_get_allocated_height (widget);
cairo_save (cr);
gtk_style_context_save (context);
gtk_style_context_set_state (context, state);
_gtk_theming_background_init_from_context (&background, context,
0, 0, width, height,
GTK_JUNCTION_NONE);
if (swatch->priv->has_color)
{
cairo_pattern_t *pattern;
cairo_matrix_t matrix;
if (swatch->priv->use_alpha)
{
cairo_save (cr);
_gtk_rounded_box_path (&background.padding_box, cr);
cairo_clip_preserve (cr);
cairo_set_source_rgb (cr, 0.33, 0.33, 0.33);
cairo_fill_preserve (cr);
pattern = _gtk_color_chooser_get_checkered_pattern ();
cairo_matrix_init_scale (&matrix, 0.125, 0.125);
cairo_pattern_set_matrix (pattern, &matrix);
cairo_set_source_rgb (cr, 0.66, 0.66, 0.66);
cairo_mask (cr, pattern);
cairo_pattern_destroy (pattern);
cairo_restore (cr);
background.bg_color = swatch->priv->color;
}
else
{
background.bg_color = swatch->priv->color;
background.bg_color.alpha = 1.0;
}
_gtk_theming_background_render (&background, cr);
}
else
_gtk_theming_background_render (&background, cr);
gtk_render_frame (context, cr,
0, 0, width, height);
if (gtk_widget_has_visible_focus (widget))
{
cairo_set_line_width (cr, 2);
if (swatch->priv->has_color && INTENSITY (swatch->priv->color.red, swatch->priv->color.green, swatch->priv->color.blue) < 0.5)
cairo_set_source_rgba (cr, 1., 1., 1., 0.4);
else
cairo_set_source_rgba (cr, 0., 0., 0., 0.4);
_gtk_rounded_box_shrink (&background.padding_box, 3, 3, 3, 3);
_gtk_rounded_box_path (&background.padding_box, cr);
cairo_stroke (cr);
}
if (swatch->priv->icon)
{
icon_info = gtk_icon_theme_lookup_icon (theme, swatch->priv->icon, 16,
GTK_ICON_LOOKUP_GENERIC_FALLBACK
| GTK_ICON_LOOKUP_USE_BUILTIN);
}
else if ((state & GTK_STATE_FLAG_SELECTED) != 0)
{
GdkRGBA bg, border;
GtkBorder border_width;
GIcon *gicon;
gtk_style_context_add_class (context, "color-active-badge");
_gtk_theming_background_init_from_context (&background, context,
(width - 2 * ACTIVE_BADGE_RADIUS) / 2, (height - 2 * ACTIVE_BADGE_RADIUS) / 2,
2 * ACTIVE_BADGE_RADIUS, 2* ACTIVE_BADGE_RADIUS,
GTK_JUNCTION_NONE);
if (_gtk_theming_background_has_background_image (&background))
{
_gtk_theming_background_render (&background, cr);
}
else
{
gtk_style_context_get_background_color (context, state, &bg);
gtk_style_context_get_border_color (context, state, &border);
gtk_style_context_get_border (context, state, &border_width);
cairo_new_sub_path (cr);
cairo_arc (cr, width / 2, height / 2, ACTIVE_BADGE_RADIUS, 0, 2 * G_PI);
cairo_close_path (cr);
gdk_cairo_set_source_rgba (cr, &bg);
cairo_fill_preserve (cr);
gdk_cairo_set_source_rgba (cr, &border);
cairo_set_line_width (cr, border_width.left);
cairo_stroke (cr);
gicon = g_themed_icon_new ("object-select-symbolic");
/* fallback for themes that don't have object-select-symbolic */
g_themed_icon_append_name (G_THEMED_ICON (gicon), "gtk-apply");
icon_info = gtk_icon_theme_lookup_by_gicon (theme, gicon, 16,
GTK_ICON_LOOKUP_GENERIC_FALLBACK
| GTK_ICON_LOOKUP_USE_BUILTIN);
g_object_unref (gicon);
}
}
if (icon_info != NULL)
{
GdkPixbuf *pixbuf;
pixbuf = gtk_icon_info_load_symbolic_for_context (icon_info, context,
NULL, NULL);
if (pixbuf != NULL)
{
gtk_render_icon (context, cr, pixbuf,
(width - gdk_pixbuf_get_width (pixbuf)) / 2,
(height - gdk_pixbuf_get_height (pixbuf)) / 2);
g_object_unref (pixbuf);
}
gtk_icon_info_free (icon_info);
}
cairo_restore (cr);
gtk_style_context_restore (context);
return FALSE;
}
static void
drag_set_color_icon (GdkDragContext *context,
const GdkRGBA *color)
{
cairo_surface_t *surface;
cairo_t *cr;
surface = cairo_image_surface_create (CAIRO_FORMAT_RGB24, 48, 32);
cr = cairo_create (surface);
gdk_cairo_set_source_rgba (cr, color);
cairo_paint (cr);
cairo_surface_set_device_offset (surface, -4, -4);
gtk_drag_set_icon_surface (context, surface);
cairo_destroy (cr);
cairo_surface_destroy (surface);
}
static void
swatch_drag_begin (GtkWidget *widget,
GdkDragContext *context)
{
GtkColorSwatch *swatch = GTK_COLOR_SWATCH (widget);
GdkRGBA color;
gtk_color_swatch_get_rgba (swatch, &color);
drag_set_color_icon (context, &color);
}
static void
swatch_drag_data_get (GtkWidget *widget,
GdkDragContext *context,
GtkSelectionData *selection_data,
guint info,
guint time)
{
GtkColorSwatch *swatch = GTK_COLOR_SWATCH (widget);
guint16 vals[4];
GdkRGBA color;
gtk_color_swatch_get_rgba (swatch, &color);
vals[0] = color.red * 0xffff;
vals[1] = color.green * 0xffff;
vals[2] = color.blue * 0xffff;
vals[3] = color.alpha * 0xffff;
gtk_selection_data_set (selection_data,
gdk_atom_intern_static_string ("application/x-color"),
16, (guchar *)vals, 8);
}
static void
swatch_drag_data_received (GtkWidget *widget,
GdkDragContext *context,
gint x,
gint y,
GtkSelectionData *selection_data,
guint info,
guint time)
{
gint length;
guint16 *vals;
GdkRGBA color;
length = gtk_selection_data_get_length (selection_data);
if (length < 0)
return;
/* We accept drops with the wrong format, since the KDE color
* chooser incorrectly drops application/x-color with format 8.
*/
if (length != 8)
{
g_warning ("Received invalid color data\n");
return;
}
vals = (guint16 *) gtk_selection_data_get_data (selection_data);
color.red = (gdouble)vals[0] / 0xffff;
color.green = (gdouble)vals[1] / 0xffff;
color.blue = (gdouble)vals[2] / 0xffff;
color.alpha = (gdouble)vals[3] / 0xffff;
gtk_color_swatch_set_rgba (GTK_COLOR_SWATCH (widget), &color);
}
static void
swatch_get_preferred_width (GtkWidget *widget,
gint *min,
gint *nat)
{
*min = *nat = 48;
}
static void
swatch_get_preferred_height (GtkWidget *widget,
gint *min,
gint *nat)
{
*min = *nat = 32;
}
static gboolean
swatch_key_press (GtkWidget *widget,
GdkEventKey *event)
{
GtkColorSwatch *swatch = GTK_COLOR_SWATCH (widget);
if (event->keyval == GDK_KEY_space ||
event->keyval == GDK_KEY_Return ||
event->keyval == GDK_KEY_ISO_Enter||
event->keyval == GDK_KEY_KP_Enter ||
event->keyval == GDK_KEY_KP_Space)
{
if (swatch->priv->has_color &&
swatch->priv->selectable &&
(gtk_widget_get_state_flags (widget) & GTK_STATE_FLAG_SELECTED) == 0)
gtk_widget_set_state_flags (widget, GTK_STATE_FLAG_SELECTED, FALSE);
else
g_signal_emit (swatch, signals[ACTIVATE], 0);
return TRUE;
}
if (GTK_WIDGET_CLASS (gtk_color_swatch_parent_class)->key_press_event (widget, event))
return TRUE;
return FALSE;
}
static gboolean
swatch_enter_notify (GtkWidget *widget,
GdkEventCrossing *event)
{
GtkColorSwatch *swatch = GTK_COLOR_SWATCH (widget);
swatch->priv->contains_pointer = TRUE;
gtk_widget_set_state_flags (widget, GTK_STATE_FLAG_PRELIGHT, FALSE);
return FALSE;
}
static gboolean
swatch_leave_notify (GtkWidget *widget,
GdkEventCrossing *event)
{
GtkColorSwatch *swatch = GTK_COLOR_SWATCH (widget);
swatch->priv->contains_pointer = FALSE;
gtk_widget_unset_state_flags (widget, GTK_STATE_FLAG_PRELIGHT);
return FALSE;
}
static void
emit_customize (GtkColorSwatch *swatch)
{
g_signal_emit (swatch, signals[CUSTOMIZE], 0);
}
static void
popup_position_func (GtkMenu *menu,
gint *x,
gint *y,
gboolean *push_in,
gpointer user_data)
{
GtkWidget *widget;
GtkRequisition req;
gint root_x, root_y;
GdkScreen *screen;
GdkWindow *window;
GdkRectangle monitor;
gint monitor_num;
widget = GTK_WIDGET (user_data);
g_return_if_fail (gtk_widget_get_realized (widget));
window = gtk_widget_get_window (widget);
screen = gtk_widget_get_screen (widget);
monitor_num = gdk_screen_get_monitor_at_window (screen, window);
if (monitor_num < 0)
monitor_num = 0;
gtk_menu_set_monitor (menu, monitor_num);
gdk_window_get_origin (window, &root_x, &root_y);
gtk_widget_get_preferred_size (GTK_WIDGET (menu), &req, NULL);
/* Put corner of menu centered on swatch */
*x = root_x + gtk_widget_get_allocated_width (widget) / 2;
*y = root_y + gtk_widget_get_allocated_height (widget) / 2;
/* Ensure sanity */
gdk_screen_get_monitor_workarea (screen, monitor_num, &monitor);
*x = CLAMP (*x, monitor.x, MAX (monitor.x, monitor.width - req.width));
*y = CLAMP (*y, monitor.y, MAX (monitor.y, monitor.height - req.height));
}
static void
do_popup (GtkWidget *swatch,
GdkEventButton *event)
{
GtkWidget *menu;
GtkWidget *item;
menu = gtk_menu_new ();
item = gtk_menu_item_new_with_mnemonic (_("_Customize"));
gtk_menu_attach_to_widget (GTK_MENU (menu), swatch, NULL);
g_signal_connect_swapped (item, "activate",
G_CALLBACK (emit_customize), swatch);
gtk_menu_shell_append (GTK_MENU_SHELL (menu), item);
gtk_widget_show_all (item);
if (event)
gtk_menu_popup (GTK_MENU (menu), NULL, NULL,
NULL, NULL, event->button, event->time);
else
gtk_menu_popup (GTK_MENU (menu), NULL, NULL,
popup_position_func, swatch,
0, gtk_get_current_event_time ());
}
static gboolean
swatch_button_press (GtkWidget *widget,
GdkEventButton *event)
{
GtkColorSwatch *swatch = GTK_COLOR_SWATCH (widget);
gtk_widget_grab_focus (widget);
if (gdk_event_triggers_context_menu ((GdkEvent *) event) &&
swatch->priv->has_color)
{
do_popup (widget, event);
return TRUE;
}
else if (event->type == GDK_2BUTTON_PRESS &&
event->button == GDK_BUTTON_PRIMARY)
{
g_signal_emit (swatch, signals[ACTIVATE], 0);
return TRUE;
}
return FALSE;
}
static gboolean
swatch_primary_action (GtkColorSwatch *swatch)
{
GtkWidget *widget = (GtkWidget *)swatch;
GtkStateFlags flags;
flags = gtk_widget_get_state_flags (widget);
if (!swatch->priv->has_color)
{
g_signal_emit (swatch, signals[ACTIVATE], 0);
return TRUE;
}
else if (swatch->priv->selectable &&
(flags & GTK_STATE_FLAG_SELECTED) == 0)
{
gtk_widget_set_state_flags (widget, GTK_STATE_FLAG_SELECTED, FALSE);
return TRUE;
}
return FALSE;
}
static gboolean
swatch_button_release (GtkWidget *widget,
GdkEventButton *event)
{
GtkColorSwatch *swatch = GTK_COLOR_SWATCH (widget);
if (event->button == GDK_BUTTON_PRIMARY &&
swatch->priv->contains_pointer)
return swatch_primary_action (swatch);
return FALSE;
}
static void
hold_action (GtkPressAndHold *pah,
gint x,
gint y,
GtkColorSwatch *swatch)
{
emit_customize (swatch);
}
static void
tap_action (GtkPressAndHold *pah,
gint x,
gint y,
GtkColorSwatch *swatch)
{
swatch_primary_action (swatch);
}
static gboolean
swatch_touch (GtkWidget *widget,
GdkEventTouch *event)
{
GtkColorSwatch *swatch = GTK_COLOR_SWATCH (widget);
if (!swatch->priv->press_and_hold)
{
gint drag_threshold;
g_object_get (gtk_widget_get_settings (widget),
"gtk-dnd-drag-threshold", &drag_threshold,
NULL);
swatch->priv->press_and_hold = gtk_press_and_hold_new ();
g_object_set (swatch->priv->press_and_hold,
"drag-threshold", drag_threshold,
"hold-time", 1000,
NULL);
g_signal_connect (swatch->priv->press_and_hold, "hold",
G_CALLBACK (hold_action), swatch);
g_signal_connect (swatch->priv->press_and_hold, "tap",
G_CALLBACK (tap_action), swatch);
}
gtk_press_and_hold_process_event (swatch->priv->press_and_hold, (GdkEvent *)event);
return TRUE;
}
static void
swatch_map (GtkWidget *widget)
{
GtkColorSwatch *swatch = GTK_COLOR_SWATCH (widget);
GTK_WIDGET_CLASS (gtk_color_swatch_parent_class)->map (widget);
if (swatch->priv->event_window)
gdk_window_show (swatch->priv->event_window);
}
static void
swatch_unmap (GtkWidget *widget)
{
GtkColorSwatch *swatch = GTK_COLOR_SWATCH (widget);
if (swatch->priv->event_window)
gdk_window_hide (swatch->priv->event_window);
GTK_WIDGET_CLASS (gtk_color_swatch_parent_class)->unmap (widget);
}
static void
swatch_realize (GtkWidget *widget)
{
GtkColorSwatch *swatch = GTK_COLOR_SWATCH (widget);
GtkAllocation allocation;
GdkWindow *window;
GdkWindowAttr attributes;
gint attributes_mask;
gtk_widget_get_allocation (widget, &allocation);
gtk_widget_set_realized (widget, TRUE);
attributes.window_type = GDK_WINDOW_CHILD;
attributes.x = allocation.x;
attributes.y = allocation.y;
attributes.width = allocation.width;
attributes.height = allocation.height;
attributes.wclass = GDK_INPUT_ONLY;
attributes.event_mask = gtk_widget_get_events (widget);
attributes.event_mask |= GDK_BUTTON_PRESS_MASK
| GDK_BUTTON_RELEASE_MASK
| GDK_ENTER_NOTIFY_MASK
| GDK_LEAVE_NOTIFY_MASK
| GDK_TOUCH_MASK;
attributes_mask = GDK_WA_X | GDK_WA_Y;
window = gtk_widget_get_parent_window (widget);
gtk_widget_set_window (widget, window);
g_object_ref (window);
swatch->priv->event_window =
gdk_window_new (window,
&attributes, attributes_mask);
gtk_widget_register_window (widget, swatch->priv->event_window);
}
static void
swatch_unrealize (GtkWidget *widget)
{
GtkColorSwatch *swatch = GTK_COLOR_SWATCH (widget);
if (swatch->priv->event_window)
{
gtk_widget_unregister_window (widget, swatch->priv->event_window);
gdk_window_destroy (swatch->priv->event_window);
swatch->priv->event_window = NULL;
}
GTK_WIDGET_CLASS (gtk_color_swatch_parent_class)->unrealize (widget);
}
static void
swatch_size_allocate (GtkWidget *widget,
GtkAllocation *allocation)
{
GtkColorSwatch *swatch = GTK_COLOR_SWATCH (widget);
gtk_widget_set_allocation (widget, allocation);
if (gtk_widget_get_realized (widget))
gdk_window_move_resize (swatch->priv->event_window,
allocation->x,
allocation->y,
allocation->width,
allocation->height);
}
static gboolean
swatch_popup_menu (GtkWidget *swatch)
{
do_popup (swatch, NULL);
return TRUE;
}
/* GObject implementation {{{1 */
static void
swatch_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec)
{
GtkColorSwatch *swatch = GTK_COLOR_SWATCH (object);
GdkRGBA color;
switch (prop_id)
{
case PROP_RGBA:
gtk_color_swatch_get_rgba (swatch, &color);
g_value_set_boxed (value, &color);
break;
case PROP_SELECTABLE:
g_value_set_boolean (value, gtk_color_swatch_get_selectable (swatch));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
swatch_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec)
{
GtkColorSwatch *swatch = GTK_COLOR_SWATCH (object);
switch (prop_id)
{
case PROP_RGBA:
gtk_color_swatch_set_rgba (swatch, g_value_get_boxed (value));
break;
case PROP_SELECTABLE:
gtk_color_swatch_set_selectable (swatch, g_value_get_boolean (value));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
swatch_finalize (GObject *object)
{
GtkColorSwatch *swatch = GTK_COLOR_SWATCH (object);
g_free (swatch->priv->icon);
g_clear_object (&swatch->priv->press_and_hold);
G_OBJECT_CLASS (gtk_color_swatch_parent_class)->finalize (object);
}
static void
gtk_color_swatch_class_init (GtkColorSwatchClass *class)
{
GtkWidgetClass *widget_class = (GtkWidgetClass *)class;
GObjectClass *object_class = (GObjectClass *)class;
object_class->get_property = swatch_get_property;
object_class->set_property = swatch_set_property;
object_class->finalize = swatch_finalize;
widget_class->get_preferred_width = swatch_get_preferred_width;
widget_class->get_preferred_height = swatch_get_preferred_height;
widget_class->draw = swatch_draw;
widget_class->drag_begin = swatch_drag_begin;
widget_class->drag_data_get = swatch_drag_data_get;
widget_class->drag_data_received = swatch_drag_data_received;
widget_class->key_press_event = swatch_key_press;
widget_class->popup_menu = swatch_popup_menu;
widget_class->button_press_event = swatch_button_press;
widget_class->button_release_event = swatch_button_release;
widget_class->enter_notify_event = swatch_enter_notify;
widget_class->leave_notify_event = swatch_leave_notify;
widget_class->realize = swatch_realize;
widget_class->unrealize = swatch_unrealize;
widget_class->map = swatch_map;
widget_class->unmap = swatch_unmap;
widget_class->size_allocate = swatch_size_allocate;
widget_class->touch_event = swatch_touch;
signals[ACTIVATE] =
g_signal_new ("activate",
GTK_TYPE_COLOR_SWATCH,
G_SIGNAL_RUN_FIRST,
G_STRUCT_OFFSET (GtkColorSwatchClass, activate),
NULL, NULL, NULL, G_TYPE_NONE, 0);
signals[CUSTOMIZE] =
g_signal_new ("customize",
GTK_TYPE_COLOR_SWATCH,
G_SIGNAL_RUN_FIRST,
G_STRUCT_OFFSET (GtkColorSwatchClass, customize),
NULL, NULL, NULL, G_TYPE_NONE, 0);
g_object_class_install_property (object_class, PROP_RGBA,
g_param_spec_boxed ("rgba", P_("RGBA Color"), P_("Color as RGBA"),
GDK_TYPE_RGBA, GTK_PARAM_READWRITE));
g_object_class_install_property (object_class, PROP_SELECTABLE,
g_param_spec_boolean ("selectable", P_("Selectable"), P_("Whether the swatch is selectable"),
TRUE, GTK_PARAM_READWRITE));
g_type_class_add_private (object_class, sizeof (GtkColorSwatchPrivate));
gtk_widget_class_set_accessible_type (widget_class, GTK_TYPE_COLOR_SWATCH_ACCESSIBLE);
}
/* Public API {{{1 */
GtkWidget *
gtk_color_swatch_new (void)
{
return (GtkWidget *) g_object_new (GTK_TYPE_COLOR_SWATCH, NULL);
}
static const GtkTargetEntry dnd_targets[] = {
{ "application/x-color", 0 }
};
void
gtk_color_swatch_set_rgba (GtkColorSwatch *swatch,
const GdkRGBA *color)
{
GtkStyleContext *context;
context = gtk_widget_get_style_context (GTK_WIDGET (swatch));
if (!swatch->priv->has_color)
{
gtk_drag_source_set (GTK_WIDGET (swatch),
GDK_BUTTON1_MASK | GDK_BUTTON3_MASK,
dnd_targets, G_N_ELEMENTS (dnd_targets),
GDK_ACTION_COPY | GDK_ACTION_MOVE);
}
else
{
gtk_style_context_remove_class (context, "color-light");
gtk_style_context_remove_class (context, "color-dark");
}
swatch->priv->has_color = TRUE;
swatch->priv->color = *color;
if (INTENSITY (swatch->priv->color.red, swatch->priv->color.green, swatch->priv->color.blue) > 0.5)
gtk_style_context_add_class (context, "color-light");
else
gtk_style_context_add_class (context, "color-dark");
gtk_widget_queue_draw (GTK_WIDGET (swatch));
g_object_notify (G_OBJECT (swatch), "rgba");
}
gboolean
gtk_color_swatch_get_rgba (GtkColorSwatch *swatch,
GdkRGBA *color)
{
if (swatch->priv->has_color)
{
color->red = swatch->priv->color.red;
color->green = swatch->priv->color.green;
color->blue = swatch->priv->color.blue;
color->alpha = swatch->priv->color.alpha;
return TRUE;
}
else
{
color->red = 1.0;
color->green = 1.0;
color->blue = 1.0;
color->alpha = 1.0;
return FALSE;
}
}
void
gtk_color_swatch_set_icon (GtkColorSwatch *swatch,
const gchar *icon)
{
swatch->priv->icon = g_strdup (icon);
gtk_widget_queue_draw (GTK_WIDGET (swatch));
}
void
gtk_color_swatch_set_can_drop (GtkColorSwatch *swatch,
gboolean can_drop)
{
if (can_drop)
{
gtk_drag_dest_set (GTK_WIDGET (swatch),
GTK_DEST_DEFAULT_HIGHLIGHT |
GTK_DEST_DEFAULT_MOTION |
GTK_DEST_DEFAULT_DROP,
dnd_targets, G_N_ELEMENTS (dnd_targets),
GDK_ACTION_COPY);
}
else
{
gtk_drag_dest_unset (GTK_WIDGET (swatch));
}
}
void
gtk_color_swatch_set_use_alpha (GtkColorSwatch *swatch,
gboolean use_alpha)
{
swatch->priv->use_alpha = use_alpha;
gtk_widget_queue_draw (GTK_WIDGET (swatch));
}
void
gtk_color_swatch_set_selectable (GtkColorSwatch *swatch,
gboolean selectable)
{
if (selectable == swatch->priv->selectable)
return;
swatch->priv->selectable = selectable;
g_object_notify (G_OBJECT (swatch), "selectable");
}
gboolean
gtk_color_swatch_get_selectable (GtkColorSwatch *swatch)
{
return swatch->priv->selectable;
}
/* vim:set foldmethod=marker: */