Commit d506e559 authored by Michael Natterer's avatar Michael Natterer 😴 Committed by Michael Natterer

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.
parent ab095db2
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.
2002-11-04 Michael Natterer <mitch@gimp.org>
* app/widgets/gimpdock.c (gimp_dock_class_init): connect
......
......@@ -47,6 +47,8 @@ libgimpwidgets_1_3_la_sources = \
gimpoffsetarea.h \
gimppatheditor.c \
gimppatheditor.h \
gimppickbutton.c \
gimppickbutton.h \
gimppixmap.c \
gimppixmap.h \
gimpquerybox.c \
......@@ -93,6 +95,7 @@ libgimpwidgetsinclude_HEADERS = \
gimphelpui.h \
gimpoffsetarea.h \
gimppatheditor.h \
gimppickbutton.h \
gimppixmap.h \
gimpquerybox.h \
gimpsizeentry.h \
......
/* LIBGIMP - The GIMP Library
* Copyright (C) 1995-1997 Peter Mattis and Spencer Kimball
*
* gimppickbutton.c
* Copyright (C) 2002 Michael Natterer <mitch@gimp.org>
*
* 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.
*/
#include "config.h"
#include <gdk/gdkkeysyms.h>
#include <gtk/gtk.h>
#include "libgimpcolor/gimpcolor.h"
#include "gimpwidgetstypes.h"
#include "gimphelpui.h"
#include "gimppickbutton.h"
#include "gimpstock.h"
#include "libgimp/libgimp-intl.h"
enum
{
COLOR_PICKED,
LAST_SIGNAL
};
static void gimp_pick_button_class_init (GimpPickButtonClass *klass);
static void gimp_pick_button_init (GimpPickButton *editor);
static void gimp_pick_button_destroy (GtkObject *object);
static void gimp_pick_button_clicked (GtkButton *button);
static gboolean gimp_pick_button_mouse_press (GtkWidget *invisible,
GdkEventButton *event,
GimpPickButton *button);
static gboolean gimp_pick_button_key_press (GtkWidget *invisible,
GdkEventKey *event,
GimpPickButton *button);
static gboolean gimp_pick_button_mouse_motion (GtkWidget *invisible,
GdkEventMotion *event,
GimpPickButton *button);
static gboolean gimp_pick_button_mouse_release (GtkWidget *invisible,
GdkEventButton *event,
GimpPickButton *button);
static void gimp_pick_button_shutdown (GimpPickButton *button);
static void gimp_pick_button_grab (GtkWidget *invisible,
gint x_root,
gint y_root,
GimpPickButton *button);
static guint pick_button_signals[LAST_SIGNAL] = { 0 };
static GtkButtonClass *parent_class = NULL;
GType
gimp_pick_button_get_type (void)
{
static GType button_type = 0;
if (! button_type)
{
static const GTypeInfo button_info =
{
sizeof (GimpPickButtonClass),
(GBaseInitFunc) NULL,
(GBaseFinalizeFunc) NULL,
(GClassInitFunc) gimp_pick_button_class_init,
NULL, /* class_finalize */
NULL, /* class_data */
sizeof (GimpPickButton),
0, /* n_preallocs */
(GInstanceInitFunc) gimp_pick_button_init,
};
button_type = g_type_register_static (GTK_TYPE_BUTTON,
"GimpPickButton",
&button_info, 0);
}
return button_type;
}
static void
gimp_pick_button_class_init (GimpPickButtonClass* klass)
{
GtkObjectClass *object_class;
GtkButtonClass *button_class;
object_class = GTK_OBJECT_CLASS (klass);
button_class = GTK_BUTTON_CLASS (klass);
parent_class = g_type_class_peek_parent (klass);
pick_button_signals[COLOR_PICKED] =
g_signal_new ("color_picked",
G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_FIRST,
G_STRUCT_OFFSET (GimpPickButtonClass, color_picked),
NULL, NULL,
g_cclosure_marshal_VOID__POINTER,
G_TYPE_NONE, 1,
G_TYPE_POINTER);
object_class->destroy = gimp_pick_button_destroy;
button_class->clicked = gimp_pick_button_clicked;
klass->color_picked = NULL;
}
static void
gimp_pick_button_init (GimpPickButton *button)
{
GtkWidget *image;
image = gtk_image_new_from_stock (GIMP_STOCK_TOOL_COLOR_PICKER,
GTK_ICON_SIZE_BUTTON);
gtk_container_add (GTK_CONTAINER (button), image);
gtk_widget_show (image);
gimp_help_set_help_data (GTK_WIDGET (button),
_("Click the eyedropper, then click a color "
"anywhere on your screen to select that color."),
NULL);
}
static void
gimp_pick_button_destroy (GtkObject *object)
{
GimpPickButton *button;
button = GIMP_PICK_BUTTON (object);
if (button->cursor)
{
gdk_cursor_unref (button->cursor);
button->cursor = NULL;
}
if (button->grab_widget)
{
gtk_widget_destroy (button->grab_widget);
button->grab_widget = NULL;
}
GTK_OBJECT_CLASS (parent_class)->destroy (object);
}
/* public functions */
GtkWidget *
gimp_pick_button_new (void)
{
GimpPickButton *button;
button = g_object_new (GIMP_TYPE_PICK_BUTTON, NULL);
return GTK_WIDGET (button);
}
/* private functions */
/* cursor stuff will be removed again once the gimpcursor.[ch] utility
* stuff has been moved to libgimpwidgets --mitch
*/
#define DROPPER_WIDTH 17
#define DROPPER_HEIGHT 17
#define DROPPER_X_HOT 2
#define DROPPER_Y_HOT 16
static guchar dropper_bits[] = {
0xff, 0x8f, 0x01, 0xff, 0x77, 0x01, 0xff, 0xfb, 0x00, 0xff, 0xf8, 0x00,
0x7f, 0xff, 0x00, 0xff, 0x7e, 0x01, 0xff, 0x9d, 0x01, 0xff, 0xd8, 0x01,
0x7f, 0xd4, 0x01, 0x3f, 0xee, 0x01, 0x1f, 0xff, 0x01, 0x8f, 0xff, 0x01,
0xc7, 0xff, 0x01, 0xe3, 0xff, 0x01, 0xf3, 0xff, 0x01, 0xfd, 0xff, 0x01,
0xff, 0xff, 0x01, };
static guchar dropper_mask[] = {
0x00, 0x70, 0x00, 0x00, 0xf8, 0x00, 0x00, 0xfc, 0x01, 0x00, 0xff, 0x01,
0x80, 0xff, 0x01, 0x00, 0xff, 0x00, 0x00, 0x7f, 0x00, 0x80, 0x3f, 0x00,
0xc0, 0x3f, 0x00, 0xe0, 0x13, 0x00, 0xf0, 0x01, 0x00, 0xf8, 0x00, 0x00,
0x7c, 0x00, 0x00, 0x3e, 0x00, 0x00, 0x1e, 0x00, 0x00, 0x0d, 0x00, 0x00,
0x02, 0x00, 0x00, };
static GdkCursor *
make_cursor (void)
{
GdkCursor *cursor;
GdkColor bg = { 0, 0xffff, 0xffff, 0xffff };
GdkColor fg = { 0, 0x0000, 0x0000, 0x0000 };
GdkPixmap *pixmap =
gdk_bitmap_create_from_data (NULL,
(gchar *) dropper_bits,
DROPPER_WIDTH, DROPPER_HEIGHT);
GdkPixmap *mask =
gdk_bitmap_create_from_data (NULL,
(gchar *) dropper_mask,
DROPPER_WIDTH, DROPPER_HEIGHT);
cursor = gdk_cursor_new_from_pixmap (pixmap, mask, &fg, &bg,
DROPPER_X_HOT ,DROPPER_Y_HOT
);
g_object_unref (pixmap);
g_object_unref (mask);
return cursor;
}
static void
gimp_pick_button_clicked (GtkButton *gtk_button)
{
GimpPickButton *button;
button = GIMP_PICK_BUTTON (gtk_button);
if (button->cursor == NULL)
button->cursor = make_cursor ();
if (button->grab_widget == NULL)
{
button->grab_widget = gtk_invisible_new ();
gtk_widget_add_events (button->grab_widget,
GDK_BUTTON_RELEASE_MASK |
GDK_BUTTON_PRESS_MASK |
GDK_POINTER_MOTION_MASK);
gtk_widget_show (button->grab_widget);
}
if (gdk_keyboard_grab (button->grab_widget->window, FALSE,
gtk_get_current_event_time ()) != GDK_GRAB_SUCCESS)
{
g_warning ("Failed to grab keyboard to do eyedropper");
return;
}
if (gdk_pointer_grab (button->grab_widget->window, FALSE,
GDK_BUTTON_RELEASE_MASK |
GDK_BUTTON_PRESS_MASK |
GDK_POINTER_MOTION_MASK,
NULL,
button->cursor,
gtk_get_current_event_time ()) != GDK_GRAB_SUCCESS)
{
gdk_keyboard_ungrab (GDK_CURRENT_TIME);
g_warning ("Failed to grab pointer to do eyedropper");
return;
}
gtk_grab_add (button->grab_widget);
g_signal_connect (G_OBJECT (button->grab_widget), "button_press_event",
G_CALLBACK (gimp_pick_button_mouse_press),
button);
g_signal_connect (G_OBJECT (button->grab_widget), "key_press_event",
G_CALLBACK (gimp_pick_button_key_press),
button);
}
static gboolean
gimp_pick_button_mouse_press (GtkWidget *invisible,
GdkEventButton *event,
GimpPickButton *button)
{
if (event->type == GDK_BUTTON_PRESS && event->button == 1)
{
g_signal_connect (G_OBJECT (invisible), "motion_notify_event",
G_CALLBACK (gimp_pick_button_mouse_motion),
button);
g_signal_connect (G_OBJECT (invisible), "button_release_event",
G_CALLBACK (gimp_pick_button_mouse_release),
button);
g_signal_handlers_disconnect_by_func (G_OBJECT (invisible),
gimp_pick_button_mouse_press,
button);
g_signal_handlers_disconnect_by_func (G_OBJECT (invisible),
gimp_pick_button_key_press,
button);
return TRUE;
}
return FALSE;
}
static gboolean
gimp_pick_button_key_press (GtkWidget *invisible,
GdkEventKey *event,
GimpPickButton *button)
{
if (event->keyval == GDK_Escape)
{
gimp_pick_button_shutdown (button);
g_signal_handlers_disconnect_by_func (G_OBJECT (invisible),
gimp_pick_button_mouse_press,
button);
g_signal_handlers_disconnect_by_func (G_OBJECT (invisible),
gimp_pick_button_key_press,
button);
return TRUE;
}
return FALSE;
}
static gboolean
gimp_pick_button_mouse_motion (GtkWidget *invisible,
GdkEventMotion *event,
GimpPickButton *button)
{
gimp_pick_button_grab (invisible, event->x_root, event->y_root, button);
return TRUE;
}
static gboolean
gimp_pick_button_mouse_release (GtkWidget *invisible,
GdkEventButton *event,
GimpPickButton *button)
{
if (event->button != 1)
return FALSE;
gimp_pick_button_grab (invisible, event->x_root, event->y_root, button);
gimp_pick_button_shutdown (button);
g_signal_handlers_disconnect_by_func (G_OBJECT (invisible),
gimp_pick_button_mouse_motion,
button);
g_signal_handlers_disconnect_by_func (G_OBJECT (invisible),
gimp_pick_button_mouse_release,
button);
return TRUE;
}
static void
gimp_pick_button_shutdown (GimpPickButton *button)
{
gdk_keyboard_ungrab (gtk_get_current_event_time ());
gdk_pointer_ungrab (gtk_get_current_event_time ());
gtk_grab_remove (button->grab_widget);
}
static void
gimp_pick_button_grab (GtkWidget *invisible,
gint x_root,
gint y_root,
GimpPickButton *button)
{
GdkImage *image;
guint32 pixel;
GdkColormap *colormap = gdk_colormap_get_system ();
GdkColor color;
GimpRGB rgb;
image = gdk_drawable_get_image (GDK_DRAWABLE (gdk_get_default_root_window ()),
x_root, y_root, 1, 1);
pixel = gdk_image_get_pixel (image, 0, 0);
g_object_unref (image);
gdk_colormap_query_color (colormap, pixel, &color);
gimp_rgba_set (&rgb,
color.red / 65535.0,
color.green / 65535.0,
color.blue / 65535.0,
1.0);
g_signal_emit (G_OBJECT (button), pick_button_signals[COLOR_PICKED], 0,
&rgb);
}
/* LIBGIMP - The GIMP Library
* Copyright (C) 1995-1997 Peter Mattis and Spencer Kimball
*
* gimppickbutton.h
* Copyright (C) 2002 Michael Natterer <mitch@gimp.org>
*
* 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.
*/
#ifndef __GIMP_PICK_BUTTON_H__
#define __GIMP_PICK_BUTTON_H__
#include <gtk/gtkbutton.h>
G_BEGIN_DECLS
#define GIMP_TYPE_PICK_BUTTON (gimp_pick_button_get_type ())
#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;
......
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