/* 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, write to the * Free Software Foundation, Inc., 59 Temple Place - Suite 330, * Boston, MA 02111-1307, USA. */ #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 "gtkprivate.h" #include "gtkintl.h" #include "a11y/gtkcolorswatchaccessible.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; }; 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.clip_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.clip_box, 3, 3, 3, 3); _gtk_rounded_box_path (&background.clip_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_button_release (GtkWidget *widget, GdkEventButton *event) { GtkColorSwatch *swatch = GTK_COLOR_SWATCH (widget); GtkStateFlags flags; if (event->button == GDK_BUTTON_PRIMARY && swatch->priv->contains_pointer) { 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 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); 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); gdk_window_set_user_data (swatch->priv->event_window, widget); } static void swatch_unrealize (GtkWidget *widget) { GtkColorSwatch *swatch = GTK_COLOR_SWATCH (widget); if (swatch->priv->event_window) { gdk_window_set_user_data (swatch->priv->event_window, NULL); 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_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; 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: */