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gtk2/gtk/gtkcolorswatch.c
Matthias Clasen 5b3001b6d5 colorswatch: Fix the overlay 
I misunderstood what the overlay is good for: We need to allocate
it the full size of the widget. since we are using it to render
a background gradient *over* the application-rendered color.

At the same time, save some 100 lines of code by using an icon
helper as gadget, instead of handling the icon manually.
2016-01-07 19:20:55 -05:00

885 lines
26 KiB
C
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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 "gtkcolorswatchprivate.h"
#include "gtkcolorchooserprivate.h"
#include "gtkdnd.h"
#include "gtkicontheme.h"
#include "gtkmain.h"
#include "gtkmenu.h"
#include "gtkmenuitem.h"
#include "gtkmenushell.h"
#include "gtkprivate.h"
#include "gtkintl.h"
#include "gtkrenderprivate.h"
#include "gtkiconhelperprivate.h"
#include "gtkcssnodeprivate.h"
#include "gtkcsscustomgadgetprivate.h"
#include "gtkwidgetprivate.h"
#include "gtkstylecontextprivate.h"
#include "a11y/gtkcolorswatchaccessibleprivate.h"
/*
* GtkColorSwatch has two CSS nodes, the main one named colorswatch
* and a subnode named overlay. The main node gets the .light or .dark
* style classes added depending on the brightness of the color that
* the swatch is showing.
*
* The color swatch has the .activatable style class by default. It can
* be removed for non-activatable swatches.
*/
struct _GtkColorSwatchPrivate
{
GdkRGBA color;
gdouble radius[4];
gchar *icon;
guint has_color : 1;
guint use_alpha : 1;
guint selectable : 1;
guint has_menu : 1;
GdkWindow *event_window;
GtkGesture *long_press_gesture;
GtkGesture *multipress_gesture;
GtkCssGadget *gadget;
GtkCssGadget *overlay_gadget;
GtkWidget *popover;
};
enum
{
PROP_ZERO,
PROP_RGBA,
PROP_SELECTABLE,
PROP_HAS_MENU
};
enum
{
ACTIVATE,
CUSTOMIZE,
LAST_SIGNAL
};
static guint signals[LAST_SIGNAL];
G_DEFINE_TYPE_WITH_PRIVATE (GtkColorSwatch, gtk_color_swatch, GTK_TYPE_WIDGET)
static gboolean
swatch_draw (GtkWidget *widget,
cairo_t *cr)
{
gtk_css_gadget_draw (GTK_COLOR_SWATCH (widget)->priv->gadget, cr);
return FALSE;
}
#define INTENSITY(r, g, b) ((r) * 0.30 + (g) * 0.59 + (b) * 0.11)
#define PIXBUF_SIZE 16
static gboolean
gtk_color_swatch_render (GtkCssGadget *gadget,
cairo_t *cr,
int x,
int y,
int width,
int height,
gpointer data)
{
GtkWidget *widget;
GtkColorSwatch *swatch;
GtkStyleContext *context;
widget = gtk_css_gadget_get_owner (gadget);
swatch = GTK_COLOR_SWATCH (widget);
context = gtk_widget_get_style_context (widget);
if (swatch->priv->has_color)
{
cairo_pattern_t *pattern;
cairo_matrix_t matrix;
GtkBorder border;
gtk_style_context_get_border (context, gtk_style_context_get_state (context), &border);
gtk_render_content_path (context, cr,
x - border.left,
y - border.top,
width + border.left + border.right,
height + border.top + border.bottom);
if (swatch->priv->use_alpha)
{
cairo_save (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);
gdk_cairo_set_source_rgba (cr, &swatch->priv->color);
}
else
{
cairo_set_source_rgb (cr,
swatch->priv->color.red,
swatch->priv->color.green,
swatch->priv->color.blue);
}
cairo_fill (cr);
}
gtk_css_gadget_draw (swatch->priv->overlay_gadget, cr);
return gtk_widget_has_visible_focus (widget);
}
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
gtk_color_swatch_measure (GtkCssGadget *gadget,
GtkOrientation orientation,
int for_size,
int *minimum,
int *natural,
int *minimum_baseline,
int *natural_baseline,
gpointer unused)
{
GtkWidget *widget;
GtkColorSwatch *swatch;
gint w, h, min;
widget = gtk_css_gadget_get_owner (gadget);
swatch = GTK_COLOR_SWATCH (widget);
gtk_css_gadget_get_preferred_size (swatch->priv->overlay_gadget,
orientation,
-1,
minimum, natural,
NULL, NULL);
gtk_widget_get_size_request (widget, &w, &h);
if (orientation == GTK_ORIENTATION_HORIZONTAL)
min = w < 0 ? 48 : w;
else
min = h < 0 ? 32 : h;
*minimum = MAX (*minimum, min);
*natural = MAX (*natural, min);
}
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)
{
gtk_widget_set_state_flags (widget, GTK_STATE_FLAG_PRELIGHT, FALSE);
return FALSE;
}
static gboolean
swatch_leave_notify (GtkWidget *widget,
GdkEventCrossing *event)
{
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
do_popup (GtkColorSwatch *swatch)
{
if (swatch->priv->popover == NULL)
{
GtkWidget *box;
GtkWidget *item;
swatch->priv->popover = gtk_popover_new (GTK_WIDGET (swatch));
box = gtk_box_new (GTK_ORIENTATION_VERTICAL, 0);
gtk_container_add (GTK_CONTAINER (swatch->priv->popover), box);
g_object_set (box, "margin", 10, NULL);
item = g_object_new (GTK_TYPE_MODEL_BUTTON,
"text", _("C_ustomize"),
NULL);
g_signal_connect_swapped (item, "clicked",
G_CALLBACK (emit_customize), swatch);
gtk_container_add (GTK_CONTAINER (box), item);
gtk_widget_show_all (box);
}
gtk_widget_show (swatch->priv->popover);
}
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 void
hold_action (GtkGestureLongPress *gesture,
gdouble x,
gdouble y,
GtkColorSwatch *swatch)
{
do_popup (swatch);
gtk_gesture_set_state (GTK_GESTURE (gesture), GTK_EVENT_SEQUENCE_CLAIMED);
}
static void
tap_action (GtkGestureMultiPress *gesture,
gint n_press,
gdouble x,
gdouble y,
GtkColorSwatch *swatch)
{
guint button;
button = gtk_gesture_single_get_current_button (GTK_GESTURE_SINGLE (gesture));
if (button == GDK_BUTTON_PRIMARY)
{
if (n_press == 1)
swatch_primary_action (swatch);
else if (n_press > 1)
g_signal_emit (swatch, signals[ACTIVATE], 0);
}
else if (button == GDK_BUTTON_SECONDARY)
{
if (swatch->priv->has_color && swatch->priv->has_menu)
do_popup (swatch);
}
}
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);
GtkAllocation clip, clip2;
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);
gtk_css_gadget_allocate (swatch->priv->gadget,
allocation,
gtk_widget_get_allocated_baseline (widget),
&clip);
gtk_css_gadget_allocate (swatch->priv->overlay_gadget,
allocation,
gtk_widget_get_allocated_baseline (widget),
&clip2);
gdk_rectangle_union (&clip, &clip2, &clip);
gtk_widget_set_clip (widget, &clip);
}
static void
swatch_get_preferred_width (GtkWidget *widget,
gint *minimum,
gint *natural)
{
gtk_css_gadget_get_preferred_size (GTK_COLOR_SWATCH (widget)->priv->gadget,
GTK_ORIENTATION_HORIZONTAL,
-1,
minimum, natural,
NULL, NULL);
}
static void
swatch_get_preferred_height (GtkWidget *widget,
gint *minimum,
gint *natural)
{
gtk_css_gadget_get_preferred_size (GTK_COLOR_SWATCH (widget)->priv->gadget,
GTK_ORIENTATION_VERTICAL,
-1,
minimum, natural,
NULL, NULL);
}
static gboolean
swatch_popup_menu (GtkWidget *widget)
{
do_popup (GTK_COLOR_SWATCH (widget));
return TRUE;
}
static void
update_icon (GtkColorSwatch *swatch)
{
GtkIconHelper *icon_helper = GTK_ICON_HELPER (swatch->priv->overlay_gadget);
if (swatch->priv->icon)
_gtk_icon_helper_set_icon_name (icon_helper, swatch->priv->icon, GTK_ICON_SIZE_BUTTON);
else if (gtk_widget_get_state_flags (GTK_WIDGET (swatch)) & GTK_STATE_FLAG_SELECTED)
_gtk_icon_helper_set_icon_name (icon_helper, "object-select-symbolic", GTK_ICON_SIZE_BUTTON);
else
_gtk_icon_helper_clear (icon_helper);
}
static void
swatch_state_flags_changed (GtkWidget *widget,
GtkStateFlags previous_state)
{
GtkColorSwatch *swatch = GTK_COLOR_SWATCH (widget);
gtk_css_node_set_state (gtk_css_gadget_get_node (swatch->priv->gadget), gtk_widget_get_state_flags (widget));
gtk_css_node_set_state (gtk_css_gadget_get_node (swatch->priv->overlay_gadget), gtk_widget_get_state_flags (widget));
update_icon (swatch);
GTK_WIDGET_CLASS (gtk_color_swatch_parent_class)->state_flags_changed (widget, previous_state);
}
/* 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;
case PROP_HAS_MENU:
g_value_set_boolean (value, swatch->priv->has_menu);
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;
case PROP_HAS_MENU:
swatch->priv->has_menu = 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->gadget);
g_clear_object (&swatch->priv->overlay_gadget);
G_OBJECT_CLASS (gtk_color_swatch_parent_class)->finalize (object);
}
static void
swatch_dispose (GObject *object)
{
GtkColorSwatch *swatch = GTK_COLOR_SWATCH (object);
if (swatch->priv->popover)
{
gtk_widget_destroy (swatch->priv->popover);
swatch->priv->popover = NULL;
}
g_clear_object (&swatch->priv->long_press_gesture);
g_clear_object (&swatch->priv->multipress_gesture);
G_OBJECT_CLASS (gtk_color_swatch_parent_class)->dispose (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;
object_class->dispose = swatch_dispose;
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->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->state_flags_changed = swatch_state_flags_changed;
signals[ACTIVATE] =
g_signal_new (I_("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 (I_("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_object_class_install_property (object_class, PROP_HAS_MENU,
g_param_spec_boolean ("has-menu", P_("Has Menu"), P_("Whether the swatch should offer customization"),
TRUE, GTK_PARAM_READWRITE));
gtk_widget_class_set_accessible_type (widget_class, GTK_TYPE_COLOR_SWATCH_ACCESSIBLE);
gtk_widget_class_set_css_name (widget_class, "colorswatch");
}
static void
gtk_color_swatch_init (GtkColorSwatch *swatch)
{
GtkCssNode *widget_node;
swatch->priv = gtk_color_swatch_get_instance_private (swatch);
swatch->priv->use_alpha = TRUE;
swatch->priv->selectable = TRUE;
swatch->priv->has_menu = TRUE;
gtk_widget_set_can_focus (GTK_WIDGET (swatch), TRUE);
gtk_widget_set_has_window (GTK_WIDGET (swatch), FALSE);
swatch->priv->long_press_gesture = gtk_gesture_long_press_new (GTK_WIDGET (swatch));
gtk_gesture_single_set_touch_only (GTK_GESTURE_SINGLE (swatch->priv->long_press_gesture),
TRUE);
g_signal_connect (swatch->priv->long_press_gesture, "pressed",
G_CALLBACK (hold_action), swatch);
swatch->priv->multipress_gesture = gtk_gesture_multi_press_new (GTK_WIDGET (swatch));
gtk_gesture_single_set_button (GTK_GESTURE_SINGLE (swatch->priv->multipress_gesture), 0);
g_signal_connect (swatch->priv->multipress_gesture, "pressed",
G_CALLBACK (tap_action), swatch);
widget_node = gtk_widget_get_css_node (GTK_WIDGET (swatch));
swatch->priv->gadget = gtk_css_custom_gadget_new_for_node (widget_node,
GTK_WIDGET (swatch),
gtk_color_swatch_measure,
NULL,
gtk_color_swatch_render,
NULL,
NULL);
gtk_css_gadget_add_class (swatch->priv->gadget, "activatable");
swatch->priv->overlay_gadget = gtk_icon_helper_new_named ("overlay", GTK_WIDGET (swatch));
_gtk_icon_helper_set_force_scale_pixbuf (GTK_ICON_HELPER (swatch->priv->overlay_gadget), TRUE);
gtk_css_node_set_parent (gtk_css_gadget_get_node (swatch->priv->overlay_gadget), widget_node);
}
/* 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);
}
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, "light");
gtk_style_context_remove_class (context, "dark");
}
else
{
gtk_style_context_add_class (context, "dark");
gtk_style_context_remove_class (context, "light");
}
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);
update_icon (swatch);
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: */
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