mirror of https://github.com/GNOME/gimp.git
new GtkButton subclass implementing the pick-from-everywhere eyedropper
2002-11-04 Michael Natterer <mitch@gimp.org> * libgimpwidgets/gimppickbutton.[ch]: new GtkButton subclass implementing the pick-from-everywhere eyedropper known from GtkColorSel. Code shamelessly stolen from there. * libgimpwidgets/Makefile.am * libgimpwidgets/gimpwidgets.h * libgimpwidgets/gimpwidgetstypes.h: changed accordingly.
This commit is contained in:
Michael Natterer
Michael Natterer
parent
ab095db2b4
commit
d506e559df
10
ChangeLog
10
ChangeLog
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@ -1,3 +1,13 @@
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2002-11-04 Michael Natterer <mitch@gimp.org>
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* libgimpwidgets/gimppickbutton.[ch]: new GtkButton subclass
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implementing the pick-from-everywhere eyedropper known from
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GtkColorSel. Code shamelessly stolen from there.
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* libgimpwidgets/Makefile.am
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* libgimpwidgets/gimpwidgets.h
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* libgimpwidgets/gimpwidgetstypes.h: changed accordingly.
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2002-11-04 Michael Natterer <mitch@gimp.org>
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* app/widgets/gimpdock.c (gimp_dock_class_init): connect
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@ -47,6 +47,8 @@ libgimpwidgets_1_3_la_sources = \
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gimpoffsetarea.h \
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gimppatheditor.c \
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gimppatheditor.h \
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gimppickbutton.c \
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gimppickbutton.h \
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gimppixmap.c \
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gimppixmap.h \
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gimpquerybox.c \
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@ -93,6 +95,7 @@ libgimpwidgetsinclude_HEADERS = \
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gimphelpui.h \
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gimpoffsetarea.h \
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gimppatheditor.h \
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gimppickbutton.h \
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gimppixmap.h \
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gimpquerybox.h \
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gimpsizeentry.h \
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@ -0,0 +1,401 @@
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/* 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-2-0/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, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#include "config.h"
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#include <gdk/gdkkeysyms.h>
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#include <gtk/gtk.h>
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#include "libgimpcolor/gimpcolor.h"
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#include "gimpwidgetstypes.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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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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static void gimp_pick_button_class_init (GimpPickButtonClass *klass);
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static void gimp_pick_button_init (GimpPickButton *editor);
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static void gimp_pick_button_destroy (GtkObject *object);
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static void gimp_pick_button_clicked (GtkButton *button);
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static gboolean gimp_pick_button_mouse_press (GtkWidget *invisible,
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GdkEventButton *event,
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GimpPickButton *button);
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static gboolean gimp_pick_button_key_press (GtkWidget *invisible,
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GdkEventKey *event,
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GimpPickButton *button);
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static gboolean gimp_pick_button_mouse_motion (GtkWidget *invisible,
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GdkEventMotion *event,
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GimpPickButton *button);
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static gboolean gimp_pick_button_mouse_release (GtkWidget *invisible,
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GdkEventButton *event,
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GimpPickButton *button);
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static void gimp_pick_button_shutdown (GimpPickButton *button);
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static void gimp_pick_button_grab (GtkWidget *invisible,
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gint x_root,
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gint y_root,
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GimpPickButton *button);
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static guint pick_button_signals[LAST_SIGNAL] = { 0 };
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static GtkButtonClass *parent_class = NULL;
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GType
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gimp_pick_button_get_type (void)
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{
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static GType button_type = 0;
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if (! button_type)
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{
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static const GTypeInfo button_info =
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{
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sizeof (GimpPickButtonClass),
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(GBaseInitFunc) NULL,
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(GBaseFinalizeFunc) NULL,
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(GClassInitFunc) gimp_pick_button_class_init,
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NULL, /* class_finalize */
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NULL, /* class_data */
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sizeof (GimpPickButton),
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0, /* n_preallocs */
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(GInstanceInitFunc) gimp_pick_button_init,
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};
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button_type = g_type_register_static (GTK_TYPE_BUTTON,
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"GimpPickButton",
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&button_info, 0);
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}
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return button_type;
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}
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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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GtkObjectClass *object_class;
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GtkButtonClass *button_class;
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object_class = GTK_OBJECT_CLASS (klass);
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button_class = GTK_BUTTON_CLASS (klass);
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parent_class = g_type_class_peek_parent (klass);
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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->destroy = gimp_pick_button_destroy;
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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_stock (GIMP_STOCK_TOOL_COLOR_PICKER,
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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_destroy (GtkObject *object)
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{
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GimpPickButton *button;
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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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GTK_OBJECT_CLASS (parent_class)->destroy (object);
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}
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/* public functions */
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GtkWidget *
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gimp_pick_button_new (void)
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{
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GimpPickButton *button;
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button = g_object_new (GIMP_TYPE_PICK_BUTTON, NULL);
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return GTK_WIDGET (button);
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}
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/* private functions */
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/* cursor stuff will be removed again once the gimpcursor.[ch] utility
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* stuff has been moved to libgimpwidgets --mitch
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*/
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#define DROPPER_WIDTH 17
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#define DROPPER_HEIGHT 17
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#define DROPPER_X_HOT 2
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#define DROPPER_Y_HOT 16
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static guchar dropper_bits[] = {
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0xff, 0x8f, 0x01, 0xff, 0x77, 0x01, 0xff, 0xfb, 0x00, 0xff, 0xf8, 0x00,
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0x7f, 0xff, 0x00, 0xff, 0x7e, 0x01, 0xff, 0x9d, 0x01, 0xff, 0xd8, 0x01,
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0x7f, 0xd4, 0x01, 0x3f, 0xee, 0x01, 0x1f, 0xff, 0x01, 0x8f, 0xff, 0x01,
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0xc7, 0xff, 0x01, 0xe3, 0xff, 0x01, 0xf3, 0xff, 0x01, 0xfd, 0xff, 0x01,
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0xff, 0xff, 0x01, };
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static guchar dropper_mask[] = {
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0x00, 0x70, 0x00, 0x00, 0xf8, 0x00, 0x00, 0xfc, 0x01, 0x00, 0xff, 0x01,
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0x80, 0xff, 0x01, 0x00, 0xff, 0x00, 0x00, 0x7f, 0x00, 0x80, 0x3f, 0x00,
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0xc0, 0x3f, 0x00, 0xe0, 0x13, 0x00, 0xf0, 0x01, 0x00, 0xf8, 0x00, 0x00,
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0x7c, 0x00, 0x00, 0x3e, 0x00, 0x00, 0x1e, 0x00, 0x00, 0x0d, 0x00, 0x00,
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0x02, 0x00, 0x00, };
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static GdkCursor *
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make_cursor (void)
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{
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GdkCursor *cursor;
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GdkColor bg = { 0, 0xffff, 0xffff, 0xffff };
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GdkColor fg = { 0, 0x0000, 0x0000, 0x0000 };
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GdkPixmap *pixmap =
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gdk_bitmap_create_from_data (NULL,
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(gchar *) dropper_bits,
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DROPPER_WIDTH, DROPPER_HEIGHT);
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GdkPixmap *mask =
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gdk_bitmap_create_from_data (NULL,
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(gchar *) dropper_mask,
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DROPPER_WIDTH, DROPPER_HEIGHT);
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cursor = gdk_cursor_new_from_pixmap (pixmap, mask, &fg, &bg,
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DROPPER_X_HOT ,DROPPER_Y_HOT
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);
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g_object_unref (pixmap);
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g_object_unref (mask);
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return cursor;
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}
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static void
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gimp_pick_button_clicked (GtkButton *gtk_button)
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{
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GimpPickButton *button;
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button = GIMP_PICK_BUTTON (gtk_button);
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if (button->cursor == NULL)
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button->cursor = make_cursor ();
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if (button->grab_widget == NULL)
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{
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button->grab_widget = gtk_invisible_new ();
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gtk_widget_add_events (button->grab_widget,
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GDK_BUTTON_RELEASE_MASK |
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GDK_BUTTON_PRESS_MASK |
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GDK_POINTER_MOTION_MASK);
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gtk_widget_show (button->grab_widget);
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}
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if (gdk_keyboard_grab (button->grab_widget->window, FALSE,
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gtk_get_current_event_time ()) != GDK_GRAB_SUCCESS)
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{
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g_warning ("Failed to grab keyboard to do eyedropper");
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return;
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}
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if (gdk_pointer_grab (button->grab_widget->window, FALSE,
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GDK_BUTTON_RELEASE_MASK |
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GDK_BUTTON_PRESS_MASK |
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GDK_POINTER_MOTION_MASK,
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NULL,
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button->cursor,
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gtk_get_current_event_time ()) != GDK_GRAB_SUCCESS)
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{
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gdk_keyboard_ungrab (GDK_CURRENT_TIME);
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g_warning ("Failed to grab pointer to do eyedropper");
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return;
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}
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gtk_grab_add (button->grab_widget);
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g_signal_connect (G_OBJECT (button->grab_widget), "button_press_event",
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G_CALLBACK (gimp_pick_button_mouse_press),
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button);
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g_signal_connect (G_OBJECT (button->grab_widget), "key_press_event",
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G_CALLBACK (gimp_pick_button_key_press),
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button);
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}
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static gboolean
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gimp_pick_button_mouse_press (GtkWidget *invisible,
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GdkEventButton *event,
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GimpPickButton *button)
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{
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if (event->type == GDK_BUTTON_PRESS && event->button == 1)
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{
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g_signal_connect (G_OBJECT (invisible), "motion_notify_event",
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G_CALLBACK (gimp_pick_button_mouse_motion),
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button);
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g_signal_connect (G_OBJECT (invisible), "button_release_event",
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G_CALLBACK (gimp_pick_button_mouse_release),
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button);
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g_signal_handlers_disconnect_by_func (G_OBJECT (invisible),
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gimp_pick_button_mouse_press,
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button);
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g_signal_handlers_disconnect_by_func (G_OBJECT (invisible),
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gimp_pick_button_key_press,
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button);
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return TRUE;
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}
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return FALSE;
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}
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static gboolean
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gimp_pick_button_key_press (GtkWidget *invisible,
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GdkEventKey *event,
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GimpPickButton *button)
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{
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if (event->keyval == GDK_Escape)
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{
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gimp_pick_button_shutdown (button);
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g_signal_handlers_disconnect_by_func (G_OBJECT (invisible),
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gimp_pick_button_mouse_press,
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button);
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g_signal_handlers_disconnect_by_func (G_OBJECT (invisible),
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gimp_pick_button_key_press,
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button);
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return TRUE;
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}
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return FALSE;
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}
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static gboolean
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gimp_pick_button_mouse_motion (GtkWidget *invisible,
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GdkEventMotion *event,
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GimpPickButton *button)
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{
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gimp_pick_button_grab (invisible, event->x_root, event->y_root, button);
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return TRUE;
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}
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static gboolean
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gimp_pick_button_mouse_release (GtkWidget *invisible,
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GdkEventButton *event,
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GimpPickButton *button)
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{
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if (event->button != 1)
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return FALSE;
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gimp_pick_button_grab (invisible, event->x_root, event->y_root, button);
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gimp_pick_button_shutdown (button);
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g_signal_handlers_disconnect_by_func (G_OBJECT (invisible),
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gimp_pick_button_mouse_motion,
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button);
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g_signal_handlers_disconnect_by_func (G_OBJECT (invisible),
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gimp_pick_button_mouse_release,
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button);
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return TRUE;
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}
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static void
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gimp_pick_button_shutdown (GimpPickButton *button)
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{
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gdk_keyboard_ungrab (gtk_get_current_event_time ());
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gdk_pointer_ungrab (gtk_get_current_event_time ());
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gtk_grab_remove (button->grab_widget);
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}
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static void
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gimp_pick_button_grab (GtkWidget *invisible,
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gint x_root,
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gint y_root,
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GimpPickButton *button)
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{
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GdkImage *image;
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guint32 pixel;
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GdkColormap *colormap = gdk_colormap_get_system ();
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GdkColor color;
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GimpRGB rgb;
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image = gdk_drawable_get_image (GDK_DRAWABLE (gdk_get_default_root_window ()),
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x_root, y_root, 1, 1);
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pixel = gdk_image_get_pixel (image, 0, 0);
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g_object_unref (image);
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gdk_colormap_query_color (colormap, pixel, &color);
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gimp_rgba_set (&rgb,
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color.red / 65535.0,
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color.green / 65535.0,
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color.blue / 65535.0,
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1.0);
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g_signal_emit (G_OBJECT (button), pick_button_signals[COLOR_PICKED], 0,
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&rgb);
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}
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@ -0,0 +1,62 @@
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/* LIBGIMP - The GIMP Library
|
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* Copyright (C) 1995-1997 Peter Mattis and Spencer Kimball
|
||||
*
|
||||
* gimppickbutton.h
|
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* Copyright (C) 2002 Michael Natterer <mitch@gimp.org>
|
||||
*
|
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* based on gtk-2-0/gtk/gtkcolorsel.c
|
||||
*
|
||||
* 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
|
||||
* Library 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.
|
||||
*/
|
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#ifndef __GIMP_PICK_BUTTON_H__
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#define __GIMP_PICK_BUTTON_H__
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#include <gtk/gtkbutton.h>
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G_BEGIN_DECLS
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#define GIMP_TYPE_PICK_BUTTON (gimp_pick_button_get_type ())
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#define GIMP_PICK_BUTTON(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), GIMP_TYPE_PICK_BUTTON, GimpPickButton))
|
||||
#define GIMP_PICK_BUTTON_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GIMP_TYPE_PICK_BUTTON, GimpPickButtonClass))
|
||||
#define GIMP_IS_PICK_BUTTON(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GIMP_TYPE_PICK_BUTTON))
|
||||
#define GIMP_IS_PICK_BUTTON_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GIMP_TYPE_PICK_BUTTON))
|
||||
#define GIMP_PICK_BUTTON_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GIMP_TYPE_PICK_BUTTON, GimpPickButtonClass))
|
||||
|
||||
|
||||
typedef struct _GimpPickButtonClass GimpPickButtonClass;
|
||||
|
||||
struct _GimpPickButton
|
||||
{
|
||||
GtkButton parent_instance;
|
||||
|
||||
/*< private >*/
|
||||
GdkCursor *cursor;
|
||||
GtkWidget *grab_widget;
|
||||
};
|
||||
|
||||
struct _GimpPickButtonClass
|
||||
{
|
||||
GtkButtonClass parent_class;
|
||||
|
||||
void (* color_picked) (GimpPickButton *button,
|
||||
const GimpRGB *color);
|
||||
};
|
||||
|
||||
|
||||
GType gimp_pick_button_get_type (void) G_GNUC_CONST;
|
||||
GtkWidget * gimp_pick_button_new (void);
|
||||
|
||||
|
||||
G_END_DECLS
|
||||
|
||||
#endif /* __GIMP_PICK_BUTTON_H__ */
|
||||
|
|
@ -41,6 +41,7 @@
|
|||
#include <libgimpwidgets/gimphelpui.h>
|
||||
#include <libgimpwidgets/gimpoffsetarea.h>
|
||||
#include <libgimpwidgets/gimppatheditor.h>
|
||||
#include <libgimpwidgets/gimppickbutton.h>
|
||||
#include <libgimpwidgets/gimppixmap.h>
|
||||
#include <libgimpwidgets/gimpquerybox.h>
|
||||
#include <libgimpwidgets/gimpsizeentry.h>
|
||||
|
|
|
|||
|
|
@ -69,6 +69,7 @@ typedef struct _GimpDialog GimpDialog;
|
|||
typedef struct _GimpFileSelection GimpFileSelection;
|
||||
typedef struct _GimpOffsetArea GimpOffsetArea;
|
||||
typedef struct _GimpPathEditor GimpPathEditor;
|
||||
typedef struct _GimpPickButton GimpPickButton;
|
||||
typedef struct _GimpPixmap GimpPixmap;
|
||||
typedef struct _GimpSizeEntry GimpSizeEntry;
|
||||
typedef struct _GimpUnitMenu GimpUnitMenu;
|
||||
|
|
|
|||
Loading…
Reference in New Issue