dcf0f9e7f4
Freedesktop (XDG) portals are a collection of D-Bus APIs that work
across desktop environments, display servers and work within
containerized applications, like Flatpak. The internal implementation
can then choose to implement these in such a way that takes into account
security considerations, as well as making sure the user consents to
certain actions.
One such portal is the `Screenshot` portal, which contains a
`Screenshot()` method as well as `PickColor()`. We already use the
former for taking a screenshot, and this commit makes sure our color
picker also makes use of the latter.
By doing this, color picking is now possible on the major Wayland
compositors.
(Honestly, we should remove DE-specific backends like that of KWin, to
have less variation on the possible results of a color picking
operation).
Fixes https://gitlab.gnome.org/GNOME/gimp/-/issues/1074
(cherry picked from commit e82f6d5b0f)
168 lines
4.2 KiB
C
168 lines
4.2 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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* <https://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 "gimpicons.h"
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#include "gimppickbutton.h"
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#include "gimppickbutton-default.h"
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#include "gimppickbutton-kwin.h"
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#include "gimppickbutton-xdg.h"
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#ifdef GDK_WINDOWING_QUARTZ
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#include "gimppickbutton-quartz.h"
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#endif
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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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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_ICON_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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if (_gimp_pick_button_xdg_available ())
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_gimp_pick_button_xdg_pick (GIMP_PICK_BUTTON (button));
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else if (_gimp_pick_button_kwin_available ())
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_gimp_pick_button_kwin_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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