mirror of https://github.com/GNOME/gimp.git
281 lines
8.6 KiB
C
281 lines
8.6 KiB
C
/* 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+/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, see
|
|
* <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#include "config.h"
|
|
|
|
#include <gegl.h>
|
|
#include <gtk/gtk.h>
|
|
#include <gdk/gdkkeysyms.h>
|
|
|
|
#include "libgimpcolor/gimpcolor.h"
|
|
|
|
#include "gimpwidgetstypes.h"
|
|
|
|
#include "gimpcairo-utils.h"
|
|
#include "gimphelpui.h"
|
|
#include "gimppickbutton.h"
|
|
#include "gimpstock.h"
|
|
|
|
#include "cursors/gimp-color-picker-cursors.c"
|
|
|
|
#include "libgimp/libgimp-intl.h"
|
|
|
|
|
|
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_pick (GdkScreen *screen,
|
|
gint x_root,
|
|
gint y_root,
|
|
GimpPickButton *button);
|
|
|
|
void _gimp_pick_button_default_pick (GimpPickButton *button);
|
|
|
|
|
|
static GdkCursor *
|
|
make_cursor (GdkDisplay *display)
|
|
{
|
|
GdkPixbuf *pixbuf;
|
|
GError *error = NULL;
|
|
|
|
pixbuf = gdk_pixbuf_new_from_resource ("/org/gimp/color-picker-cursors/cursor-color-picker.png",
|
|
&error);
|
|
|
|
if (pixbuf)
|
|
{
|
|
GdkCursor *cursor = gdk_cursor_new_from_pixbuf (display, pixbuf, 1, 30);
|
|
|
|
g_object_unref (pixbuf);
|
|
|
|
return cursor;
|
|
}
|
|
else
|
|
{
|
|
g_critical ("Failed to create cursor image: %s", error->message);
|
|
g_clear_error (&error);
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
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 (invisible, "motion-notify-event",
|
|
G_CALLBACK (gimp_pick_button_mouse_motion),
|
|
button);
|
|
g_signal_connect (invisible, "button-release-event",
|
|
G_CALLBACK (gimp_pick_button_mouse_release),
|
|
button);
|
|
|
|
g_signal_handlers_disconnect_by_func (invisible,
|
|
gimp_pick_button_mouse_press,
|
|
button);
|
|
g_signal_handlers_disconnect_by_func (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_KEY_Escape)
|
|
{
|
|
gimp_pick_button_shutdown (button);
|
|
|
|
g_signal_handlers_disconnect_by_func (invisible,
|
|
gimp_pick_button_mouse_press,
|
|
button);
|
|
g_signal_handlers_disconnect_by_func (invisible,
|
|
gimp_pick_button_key_press,
|
|
button);
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
static gboolean
|
|
gimp_pick_button_mouse_motion (GtkWidget *invisible,
|
|
GdkEventMotion *event,
|
|
GimpPickButton *button)
|
|
{
|
|
gint x_root;
|
|
gint y_root;
|
|
|
|
gdk_window_get_origin (event->window, &x_root, &y_root);
|
|
x_root += event->x;
|
|
y_root += event->y;
|
|
|
|
gimp_pick_button_pick (gdk_event_get_screen ((GdkEvent *) event),
|
|
x_root, y_root, button);
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static gboolean
|
|
gimp_pick_button_mouse_release (GtkWidget *invisible,
|
|
GdkEventButton *event,
|
|
GimpPickButton *button)
|
|
{
|
|
gint x_root;
|
|
gint y_root;
|
|
|
|
if (event->button != 1)
|
|
return FALSE;
|
|
|
|
gdk_window_get_origin (event->window, &x_root, &y_root);
|
|
x_root += event->x;
|
|
y_root += event->y;
|
|
|
|
gimp_pick_button_pick (gdk_event_get_screen ((GdkEvent *) event),
|
|
x_root, y_root, button);
|
|
|
|
gimp_pick_button_shutdown (button);
|
|
|
|
g_signal_handlers_disconnect_by_func (invisible,
|
|
gimp_pick_button_mouse_motion,
|
|
button);
|
|
g_signal_handlers_disconnect_by_func (invisible,
|
|
gimp_pick_button_mouse_release,
|
|
button);
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static void
|
|
gimp_pick_button_shutdown (GimpPickButton *button)
|
|
{
|
|
GdkDisplay *display = gtk_widget_get_display (button->grab_widget);
|
|
guint32 timestamp = gtk_get_current_event_time ();
|
|
|
|
gdk_display_keyboard_ungrab (display, timestamp);
|
|
gdk_display_pointer_ungrab (display, timestamp);
|
|
|
|
gtk_grab_remove (button->grab_widget);
|
|
}
|
|
|
|
static void
|
|
gimp_pick_button_pick (GdkScreen *screen,
|
|
gint x_root,
|
|
gint y_root,
|
|
GimpPickButton *button)
|
|
{
|
|
GdkWindow *root_window = gdk_screen_get_root_window (screen);
|
|
cairo_surface_t *image;
|
|
cairo_t *cr;
|
|
guchar *data;
|
|
guchar color[3];
|
|
GimpRGB rgb;
|
|
|
|
image = cairo_image_surface_create (CAIRO_FORMAT_RGB24, 1, 1);
|
|
|
|
cr = cairo_create (image);
|
|
|
|
gdk_cairo_set_source_window (cr, root_window, -x_root, -y_root);
|
|
cairo_paint (cr);
|
|
|
|
cairo_destroy (cr);
|
|
|
|
data = cairo_image_surface_get_data (image);
|
|
GIMP_CAIRO_RGB24_GET_PIXEL (data, color[0], color[1], color[2]);
|
|
|
|
cairo_surface_destroy (image);
|
|
|
|
gimp_rgba_set_uchar (&rgb, color[0], color[1], color[2], 255);
|
|
|
|
g_signal_emit_by_name (button, "color-picked", &rgb);
|
|
}
|
|
|
|
/* entry point to this file, called from gimppickbutton.c */
|
|
void
|
|
_gimp_pick_button_default_pick (GimpPickButton *button)
|
|
{
|
|
GtkWidget *widget;
|
|
guint32 timestamp;
|
|
|
|
if (! button->cursor)
|
|
button->cursor = make_cursor (gtk_widget_get_display (GTK_WIDGET (button)));
|
|
|
|
if (! button->grab_widget)
|
|
{
|
|
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);
|
|
}
|
|
|
|
widget = button->grab_widget;
|
|
timestamp = gtk_get_current_event_time ();
|
|
|
|
if (gdk_keyboard_grab (gtk_widget_get_window (widget), FALSE,
|
|
timestamp) != GDK_GRAB_SUCCESS)
|
|
{
|
|
g_warning ("Failed to grab keyboard to do eyedropper");
|
|
return;
|
|
}
|
|
|
|
if (gdk_pointer_grab (gtk_widget_get_window (widget), FALSE,
|
|
GDK_BUTTON_RELEASE_MASK |
|
|
GDK_BUTTON_PRESS_MASK |
|
|
GDK_POINTER_MOTION_MASK,
|
|
NULL,
|
|
button->cursor,
|
|
timestamp) != GDK_GRAB_SUCCESS)
|
|
{
|
|
gdk_display_keyboard_ungrab (gtk_widget_get_display (widget), timestamp);
|
|
g_warning ("Failed to grab pointer to do eyedropper");
|
|
return;
|
|
}
|
|
|
|
gtk_grab_add (widget);
|
|
|
|
g_signal_connect (widget, "button-press-event",
|
|
G_CALLBACK (gimp_pick_button_mouse_press),
|
|
button);
|
|
g_signal_connect (widget, "key-press-event",
|
|
G_CALLBACK (gimp_pick_button_key_press),
|
|
button);
|
|
}
|