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Diffstat (limited to 'libgimpwidgets/gimppickbutton.c')
| -rw-r--r-- | libgimpwidgets/gimppickbutton.c | 188 |
1 files changed, 188 insertions, 0 deletions
diff --git a/libgimpwidgets/gimppickbutton.c b/libgimpwidgets/gimppickbutton.c new file mode 100644 index 0000000..1611f5d --- /dev/null +++ b/libgimpwidgets/gimppickbutton.c @@ -0,0 +1,188 @@ +/* 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 + * <https://www.gnu.org/licenses/>. + */ + +#include "config.h" + +#include <gegl.h> +#include <gtk/gtk.h> +#include <gdk/gdkkeysyms.h> + +#ifdef GDK_WINDOWING_X11 +#include <gdk/gdkx.h> +#endif + +#include "libgimpcolor/gimpcolor.h" + +#include "gimpwidgetstypes.h" + +#include "gimpcairo-utils.h" +#include "gimphelpui.h" +#include "gimpicons.h" +#include "gimppickbutton.h" + +#if defined (GDK_WINDOWING_QUARTZ) +#include "gimppickbutton-quartz.h" +#elif defined (GDK_WINDOWING_WIN32) +#include "gimppickbutton-win32.h" +#else +#include "gimppickbutton-default.h" +#include "gimppickbutton-kwin.h" +#include "gimppickbutton-xdg.h" +#endif + +#include "libgimp/libgimp-intl.h" + +/** + * SECTION: gimppickbutton + * @title: GimpPickButton + * @short_description: Widget to pick a color from screen. + * + * #GimpPickButton is a specialized button. When clicked, it changes + * the cursor to a color-picker pipette and allows the user to pick a + * color from any point on the screen. + **/ + + +enum +{ + COLOR_PICKED, + LAST_SIGNAL +}; + +static void gimp_pick_button_dispose (GObject *object); + +static void gimp_pick_button_clicked (GtkButton *button); + + +G_DEFINE_TYPE (GimpPickButton, gimp_pick_button, GTK_TYPE_BUTTON) + +#define parent_class gimp_pick_button_parent_class + +static guint pick_button_signals[LAST_SIGNAL] = { 0 }; + + +static void +gimp_pick_button_class_init (GimpPickButtonClass* klass) +{ + GObjectClass *object_class = G_OBJECT_CLASS (klass); + GtkButtonClass *button_class = GTK_BUTTON_CLASS (klass); + + /** + * GimpPickButton::color-picked: + * @gimppickbutton: the object which received the signal. + * @arg1: pointer to a #GimpRGB structure that holds the picked color + * + * This signal is emitted when the user has picked a color. + **/ + 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->dispose = gimp_pick_button_dispose; + + 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_icon_name (GIMP_ICON_COLOR_PICK_FROM_SCREEN, + 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_dispose (GObject *object) +{ + GimpPickButton *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; + } + + G_OBJECT_CLASS (parent_class)->dispose (object); +} + +static void +gimp_pick_button_clicked (GtkButton *button) +{ +#if defined (GDK_WINDOWING_QUARTZ) + _gimp_pick_button_quartz_pick (GIMP_PICK_BUTTON (button)); +#elif defined (GDK_WINDOWING_WIN32) + _gimp_pick_button_win32_pick (GIMP_PICK_BUTTON (button)); +#elif defined (GDK_WINDOWING_X11) + /* It's a bit weird as we use the default pick code both in first and + * last cases. It's because when running GIMP on X11 in particular, + * the portals don't return color space information. So the returned + * color is in the display space, not in the current image space and + * we have no way to convert the data back (well if running on X11, we + * could still get a profile from the display, but if there are + * several displays, we can't know for sure where the color was picked + * from.). + * See: https://github.com/flatpak/xdg-desktop-portal/issues/862 + */ + _gimp_pick_button_default_pick (GIMP_PICK_BUTTON (button)); +#else + if (_gimp_pick_button_xdg_available ()) + _gimp_pick_button_xdg_pick (GIMP_PICK_BUTTON (button)); + else if (_gimp_pick_button_kwin_available ()) + _gimp_pick_button_kwin_pick (GIMP_PICK_BUTTON (button)); + else + _gimp_pick_button_default_pick (GIMP_PICK_BUTTON (button)); +#endif +} + + +/* public functions */ + +/** + * gimp_pick_button_new: + * + * Creates a new #GimpPickButton widget. + * + * Returns: A new #GimpPickButton widget. + **/ +GtkWidget * +gimp_pick_button_new (void) +{ + return g_object_new (GIMP_TYPE_PICK_BUTTON, NULL); +} |