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Diffstat (limited to '')
| -rw-r--r-- | app/tools/gimperasertool.c | 176 |
1 files changed, 176 insertions, 0 deletions
diff --git a/app/tools/gimperasertool.c b/app/tools/gimperasertool.c new file mode 100644 index 0000000..d6e2ac9 --- /dev/null +++ b/app/tools/gimperasertool.c @@ -0,0 +1,176 @@ +/* GIMP - The GNU Image Manipulation Program + * Copyright (C) 1995 Spencer Kimball and Peter Mattis + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 3 of the License, or + * (at your option) any later version. + * + * This program 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 General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see <https://www.gnu.org/licenses/>. + */ + +#include "config.h" + +#include <gegl.h> +#include <gtk/gtk.h> + +#include "libgimpwidgets/gimpwidgets.h" + +#include "tools-types.h" + +#include "core/gimpdrawable.h" + +#include "paint/gimperaseroptions.h" + +#include "widgets/gimphelp-ids.h" +#include "widgets/gimpwidgets-utils.h" + +#include "gimperasertool.h" +#include "gimppaintoptions-gui.h" +#include "gimptoolcontrol.h" + +#include "gimp-intl.h" + + +static void gimp_eraser_tool_modifier_key (GimpTool *tool, + GdkModifierType key, + gboolean press, + GdkModifierType state, + GimpDisplay *display); +static void gimp_eraser_tool_cursor_update (GimpTool *tool, + const GimpCoords *coords, + GdkModifierType state, + GimpDisplay *display); + +static gboolean gimp_eraser_tool_is_alpha_only (GimpPaintTool *paint_tool, + GimpDrawable *drawable); + +static GtkWidget * gimp_eraser_options_gui (GimpToolOptions *tool_options); + + +G_DEFINE_TYPE (GimpEraserTool, gimp_eraser_tool, GIMP_TYPE_BRUSH_TOOL) + +#define parent_class gimp_eraser_tool_parent_class + + +void +gimp_eraser_tool_register (GimpToolRegisterCallback callback, + gpointer data) +{ + (* callback) (GIMP_TYPE_ERASER_TOOL, + GIMP_TYPE_ERASER_OPTIONS, + gimp_eraser_options_gui, + GIMP_PAINT_OPTIONS_CONTEXT_MASK, + "gimp-eraser-tool", + _("Eraser"), + _("Eraser Tool: Erase to background or transparency using a brush"), + N_("_Eraser"), "<shift>E", + NULL, GIMP_HELP_TOOL_ERASER, + GIMP_ICON_TOOL_ERASER, + data); +} + +static void +gimp_eraser_tool_class_init (GimpEraserToolClass *klass) +{ + GimpToolClass *tool_class = GIMP_TOOL_CLASS (klass); + GimpPaintToolClass *paint_tool_class = GIMP_PAINT_TOOL_CLASS (klass); + + tool_class->modifier_key = gimp_eraser_tool_modifier_key; + tool_class->cursor_update = gimp_eraser_tool_cursor_update; + + paint_tool_class->is_alpha_only = gimp_eraser_tool_is_alpha_only; +} + +static void +gimp_eraser_tool_init (GimpEraserTool *eraser) +{ + GimpTool *tool = GIMP_TOOL (eraser); + GimpPaintTool *paint_tool = GIMP_PAINT_TOOL (eraser); + + gimp_tool_control_set_tool_cursor (tool->control, + GIMP_TOOL_CURSOR_ERASER); + gimp_tool_control_set_toggle_cursor_modifier (tool->control, + GIMP_CURSOR_MODIFIER_MINUS); + + gimp_paint_tool_enable_color_picker (paint_tool, + GIMP_COLOR_PICK_TARGET_BACKGROUND); + + paint_tool->status = _("Click to erase"); + paint_tool->status_line = _("Click to erase the line"); + paint_tool->status_ctrl = _("%s to pick a background color"); +} + +static void +gimp_eraser_tool_modifier_key (GimpTool *tool, + GdkModifierType key, + gboolean press, + GdkModifierType state, + GimpDisplay *display) +{ + if (key == GDK_MOD1_MASK) + { + GimpEraserOptions *options = GIMP_ERASER_TOOL_GET_OPTIONS (tool); + + g_object_set (options, + "anti-erase", ! options->anti_erase, + NULL); + } + + GIMP_TOOL_CLASS (parent_class)->modifier_key (tool, key, press, state, display); +} + +static void +gimp_eraser_tool_cursor_update (GimpTool *tool, + const GimpCoords *coords, + GdkModifierType state, + GimpDisplay *display) +{ + GimpEraserOptions *options = GIMP_ERASER_TOOL_GET_OPTIONS (tool); + + gimp_tool_control_set_toggled (tool->control, options->anti_erase); + + GIMP_TOOL_CLASS (parent_class)->cursor_update (tool, coords, state, display); +} + +static gboolean +gimp_eraser_tool_is_alpha_only (GimpPaintTool *paint_tool, + GimpDrawable *drawable) +{ + GimpEraserOptions *options = GIMP_ERASER_TOOL_GET_OPTIONS (paint_tool); + + if (! options->anti_erase) + return gimp_drawable_has_alpha (drawable); + else + return TRUE; +} + + +/* tool options stuff */ + +static GtkWidget * +gimp_eraser_options_gui (GimpToolOptions *tool_options) +{ + GObject *config = G_OBJECT (tool_options); + GtkWidget *vbox = gimp_paint_options_gui (tool_options); + GtkWidget *button; + gchar *str; + + /* the anti_erase toggle */ + str = g_strdup_printf (_("Anti erase (%s)"), + gimp_get_mod_string (GDK_MOD1_MASK)); + + button = gimp_prop_check_button_new (config, "anti-erase", str); + gtk_box_pack_start (GTK_BOX (vbox), button, FALSE, FALSE, 0); + gtk_widget_show (button); + + g_free (str); + + return vbox; +} |