mirror of https://github.com/GNOME/gimp.git
160 lines
4.1 KiB
C
160 lines
4.1 KiB
C
/* LIBGIMP - The GIMP Library
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* Copyright (C) 1995-1997 Peter Mattis and Spencer Kimball
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*
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* gimppickbutton.c
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* Copyright (C) 2002 Michael Natterer <mitch@gimp.org>
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*
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* based on gtk+/gtk/gtkcolorsel.c
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library. If not, see
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* <http://www.gnu.org/licenses/>.
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*/
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#include "config.h"
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#include <gegl.h>
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#include <gtk/gtk.h>
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#include <gdk/gdkkeysyms.h>
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#include "libgimpcolor/gimpcolor.h"
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#include "gimpwidgetstypes.h"
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#include "gimpcairo-utils.h"
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#include "gimphelpui.h"
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#include "gimppickbutton.h"
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#include "gimpstock.h"
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#include "libgimp/libgimp-intl.h"
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/**
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* SECTION: gimppickbutton
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* @title: GimpPickButton
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* @short_description: Widget to pick a color from screen.
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*
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* #GimpPickButton is a specialized button. When clicked, it changes
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* the cursor to a color-picker pipette and allows the user to pick a
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* color from any point on the screen.
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**/
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enum
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{
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COLOR_PICKED,
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LAST_SIGNAL
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};
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/* entry points to gimppickbutton-{default,quartz}.c */
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void _gimp_pick_button_default_pick (GimpPickButton *button);
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void _gimp_pick_button_quartz_pick (GimpPickButton *button);
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static void gimp_pick_button_dispose (GObject *object);
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static void gimp_pick_button_clicked (GtkButton *button);
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G_DEFINE_TYPE (GimpPickButton, gimp_pick_button, GTK_TYPE_BUTTON)
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#define parent_class gimp_pick_button_parent_class
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static guint pick_button_signals[LAST_SIGNAL] = { 0 };
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static void
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gimp_pick_button_class_init (GimpPickButtonClass* klass)
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{
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GObjectClass *object_class = G_OBJECT_CLASS (klass);
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GtkButtonClass *button_class = GTK_BUTTON_CLASS (klass);
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/**
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* GimpPickButton::color-picked:
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* @gimppickbutton: the object which received the signal.
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* @arg1: pointer to a #GimpRGB structure that holds the picked color
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*
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* This signal is emitted when the user has picked a color.
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**/
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pick_button_signals[COLOR_PICKED] =
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g_signal_new ("color-picked",
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G_TYPE_FROM_CLASS (klass),
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G_SIGNAL_RUN_FIRST,
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G_STRUCT_OFFSET (GimpPickButtonClass, color_picked),
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NULL, NULL,
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g_cclosure_marshal_VOID__POINTER,
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G_TYPE_NONE, 1,
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G_TYPE_POINTER);
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object_class->dispose = gimp_pick_button_dispose;
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button_class->clicked = gimp_pick_button_clicked;
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klass->color_picked = NULL;
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}
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static void
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gimp_pick_button_init (GimpPickButton *button)
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{
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GtkWidget *image;
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image = gtk_image_new_from_icon_name (GIMP_STOCK_COLOR_PICK_FROM_SCREEN,
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GTK_ICON_SIZE_BUTTON);
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gtk_container_add (GTK_CONTAINER (button), image);
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gtk_widget_show (image);
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gimp_help_set_help_data (GTK_WIDGET (button),
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_("Click the eyedropper, then click a color "
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"anywhere on your screen to select that color."),
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NULL);
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}
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static void
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gimp_pick_button_dispose (GObject *object)
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{
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GimpPickButton *button = GIMP_PICK_BUTTON (object);
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if (button->cursor)
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{
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gdk_cursor_unref (button->cursor);
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button->cursor = NULL;
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}
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if (button->grab_widget)
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{
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gtk_widget_destroy (button->grab_widget);
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button->grab_widget = NULL;
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}
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G_OBJECT_CLASS (parent_class)->dispose (object);
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}
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static void
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gimp_pick_button_clicked (GtkButton *button)
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{
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#ifdef GDK_WINDOWING_QUARTZ
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_gimp_pick_button_quartz_pick (GIMP_PICK_BUTTON (button));
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#else
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_gimp_pick_button_default_pick (GIMP_PICK_BUTTON (button));
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#endif
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}
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/* public functions */
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/**
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* gimp_pick_button_new:
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*
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* Creates a new #GimpPickButton widget.
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*
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* Returns: A new #GimpPickButton widget.
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**/
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GtkWidget *
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gimp_pick_button_new (void)
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{
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return g_object_new (GIMP_TYPE_PICK_BUTTON, NULL);
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}
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