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Diffstat (limited to '')
-rw-r--r-- | app/tools/gimpcroptool.c | 721 |
1 files changed, 721 insertions, 0 deletions
diff --git a/app/tools/gimpcroptool.c b/app/tools/gimpcroptool.c new file mode 100644 index 0000000..9e103a8 --- /dev/null +++ b/app/tools/gimpcroptool.c @@ -0,0 +1,721 @@ +/* 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/gimp.h" +#include "core/gimpimage.h" +#include "core/gimpimage-crop.h" +#include "core/gimpitem.h" +#include "core/gimptoolinfo.h" + +#include "widgets/gimphelp-ids.h" + +#include "display/gimpdisplay.h" +#include "display/gimpdisplayshell.h" +#include "display/gimptoolrectangle.h" + +#include "gimpcropoptions.h" +#include "gimpcroptool.h" +#include "gimprectangleoptions.h" +#include "gimptoolcontrol.h" +#include "gimptools-utils.h" + +#include "gimp-intl.h" + + +static void gimp_crop_tool_constructed (GObject *object); +static void gimp_crop_tool_dispose (GObject *object); + +static void gimp_crop_tool_control (GimpTool *tool, + GimpToolAction action, + GimpDisplay *display); +static void gimp_crop_tool_button_press (GimpTool *tool, + const GimpCoords *coords, + guint32 time, + GdkModifierType state, + GimpButtonPressType press_type, + GimpDisplay *display); +static void gimp_crop_tool_button_release (GimpTool *tool, + const GimpCoords *coords, + guint32 time, + GdkModifierType state, + GimpButtonReleaseType release_type, + GimpDisplay *display); +static void gimp_crop_tool_motion (GimpTool *tool, + const GimpCoords *coords, + guint32 time, + GdkModifierType state, + GimpDisplay *display); +static void gimp_crop_tool_options_notify (GimpTool *tool, + GimpToolOptions *options, + const GParamSpec *pspec); + +static void gimp_crop_tool_rectangle_changed (GimpToolWidget *rectangle, + GimpCropTool *crop_tool); +static void gimp_crop_tool_rectangle_response (GimpToolWidget *rectangle, + gint response_id, + GimpCropTool *crop_tool); +static void gimp_crop_tool_rectangle_change_complete (GimpToolRectangle *rectangle, + GimpCropTool *crop_tool); + +static void gimp_crop_tool_start (GimpCropTool *crop_tool, + GimpDisplay *display); +static void gimp_crop_tool_commit (GimpCropTool *crop_tool); +static void gimp_crop_tool_halt (GimpCropTool *crop_tool); + +static void gimp_crop_tool_update_option_defaults (GimpCropTool *crop_tool, + gboolean ignore_pending); +static GimpRectangleConstraint + gimp_crop_tool_get_constraint (GimpCropTool *crop_tool); + +static void gimp_crop_tool_image_changed (GimpCropTool *crop_tool, + GimpImage *image, + GimpContext *context); +static void gimp_crop_tool_image_size_changed (GimpCropTool *crop_tool); +static void gimp_crop_tool_image_active_layer_changed (GimpCropTool *crop_tool); +static void gimp_crop_tool_layer_size_changed (GimpCropTool *crop_tool); + +static void gimp_crop_tool_auto_shrink (GimpCropTool *crop_tool); + + +G_DEFINE_TYPE (GimpCropTool, gimp_crop_tool, GIMP_TYPE_DRAW_TOOL) + +#define parent_class gimp_crop_tool_parent_class + + +/* public functions */ + +void +gimp_crop_tool_register (GimpToolRegisterCallback callback, + gpointer data) +{ + (* callback) (GIMP_TYPE_CROP_TOOL, + GIMP_TYPE_CROP_OPTIONS, + gimp_crop_options_gui, + 0, + "gimp-crop-tool", + _("Crop"), + _("Crop Tool: Remove edge areas from image or layer"), + N_("_Crop"), "<shift>C", + NULL, GIMP_HELP_TOOL_CROP, + GIMP_ICON_TOOL_CROP, + data); +} + +static void +gimp_crop_tool_class_init (GimpCropToolClass *klass) +{ + GObjectClass *object_class = G_OBJECT_CLASS (klass); + GimpToolClass *tool_class = GIMP_TOOL_CLASS (klass); + + object_class->constructed = gimp_crop_tool_constructed; + object_class->dispose = gimp_crop_tool_dispose; + + tool_class->control = gimp_crop_tool_control; + tool_class->button_press = gimp_crop_tool_button_press; + tool_class->button_release = gimp_crop_tool_button_release; + tool_class->motion = gimp_crop_tool_motion; + tool_class->options_notify = gimp_crop_tool_options_notify; +} + +static void +gimp_crop_tool_init (GimpCropTool *crop_tool) +{ + GimpTool *tool = GIMP_TOOL (crop_tool); + + gimp_tool_control_set_wants_click (tool->control, TRUE); + gimp_tool_control_set_active_modifiers (tool->control, + GIMP_TOOL_ACTIVE_MODIFIERS_SEPARATE); + gimp_tool_control_set_precision (tool->control, + GIMP_CURSOR_PRECISION_PIXEL_BORDER); + gimp_tool_control_set_cursor (tool->control, + GIMP_CURSOR_CROSSHAIR_SMALL); + gimp_tool_control_set_tool_cursor (tool->control, + GIMP_TOOL_CURSOR_CROP); + + gimp_draw_tool_set_default_status (GIMP_DRAW_TOOL (tool), + _("Click-Drag to draw a crop rectangle")); +} + +static void +gimp_crop_tool_constructed (GObject *object) +{ + GimpCropTool *crop_tool = GIMP_CROP_TOOL (object); + GimpContext *context; + GimpToolInfo *tool_info; + + G_OBJECT_CLASS (parent_class)->constructed (object); + + tool_info = GIMP_TOOL (crop_tool)->tool_info; + + context = gimp_get_user_context (tool_info->gimp); + + g_signal_connect_object (context, "image-changed", + G_CALLBACK (gimp_crop_tool_image_changed), + crop_tool, + G_CONNECT_SWAPPED); + + /* Make sure we are connected to "size-changed" for the initial + * image. + */ + gimp_crop_tool_image_changed (crop_tool, + gimp_context_get_image (context), + context); +} + +static void +gimp_crop_tool_dispose (GObject *object) +{ + GimpCropTool *crop_tool = GIMP_CROP_TOOL (object); + + /* Clean up current_image and current_layer. */ + gimp_crop_tool_image_changed (crop_tool, NULL, NULL); + + G_OBJECT_CLASS (parent_class)->dispose (object); +} + +static void +gimp_crop_tool_control (GimpTool *tool, + GimpToolAction action, + GimpDisplay *display) +{ + GimpCropTool *crop_tool = GIMP_CROP_TOOL (tool); + + switch (action) + { + case GIMP_TOOL_ACTION_PAUSE: + case GIMP_TOOL_ACTION_RESUME: + break; + + case GIMP_TOOL_ACTION_HALT: + gimp_crop_tool_halt (crop_tool); + break; + + case GIMP_TOOL_ACTION_COMMIT: + gimp_crop_tool_commit (crop_tool); + break; + } + + GIMP_TOOL_CLASS (parent_class)->control (tool, action, display); +} + +static void +gimp_crop_tool_button_press (GimpTool *tool, + const GimpCoords *coords, + guint32 time, + GdkModifierType state, + GimpButtonPressType press_type, + GimpDisplay *display) +{ + GimpCropTool *crop_tool = GIMP_CROP_TOOL (tool); + + if (tool->display && display != tool->display) + gimp_tool_control (tool, GIMP_TOOL_ACTION_HALT, tool->display); + + if (! tool->display) + { + gimp_crop_tool_start (crop_tool, display); + + gimp_tool_widget_hover (crop_tool->widget, coords, state, TRUE); + + /* HACK: force CREATING on a newly created rectangle; otherwise, + * property bindings would cause the rectangle to start with the + * size from tool options. + */ + gimp_tool_rectangle_set_function (GIMP_TOOL_RECTANGLE (crop_tool->widget), + GIMP_TOOL_RECTANGLE_CREATING); + } + + if (gimp_tool_widget_button_press (crop_tool->widget, coords, time, state, + press_type)) + { + crop_tool->grab_widget = crop_tool->widget; + } + + gimp_tool_control_activate (tool->control); +} + +static void +gimp_crop_tool_button_release (GimpTool *tool, + const GimpCoords *coords, + guint32 time, + GdkModifierType state, + GimpButtonReleaseType release_type, + GimpDisplay *display) +{ + GimpCropTool *crop_tool = GIMP_CROP_TOOL (tool); + + gimp_tool_control_halt (tool->control); + + if (crop_tool->grab_widget) + { + gimp_tool_widget_button_release (crop_tool->grab_widget, + coords, time, state, release_type); + crop_tool->grab_widget = NULL; + } + + gimp_tool_push_status (tool, display, _("Click or press Enter to crop")); +} + +static void +gimp_crop_tool_motion (GimpTool *tool, + const GimpCoords *coords, + guint32 time, + GdkModifierType state, + GimpDisplay *display) +{ + GimpCropTool *crop_tool = GIMP_CROP_TOOL (tool); + + if (crop_tool->grab_widget) + { + gimp_tool_widget_motion (crop_tool->grab_widget, coords, time, state); + } +} + +static void +gimp_crop_tool_options_notify (GimpTool *tool, + GimpToolOptions *options, + const GParamSpec *pspec) +{ + GimpCropTool *crop_tool = GIMP_CROP_TOOL (tool); + + if (! strcmp (pspec->name, "layer-only") || + ! strcmp (pspec->name, "allow-growing")) + { + if (crop_tool->widget) + { + gimp_tool_rectangle_set_constraint (GIMP_TOOL_RECTANGLE (crop_tool->widget), + gimp_crop_tool_get_constraint (crop_tool)); + } + else + { + gimp_crop_tool_update_option_defaults (crop_tool, FALSE); + } + } +} + +static void +gimp_crop_tool_rectangle_changed (GimpToolWidget *rectangle, + GimpCropTool *crop_tool) +{ +} + +static void +gimp_crop_tool_rectangle_response (GimpToolWidget *rectangle, + gint response_id, + GimpCropTool *crop_tool) +{ + GimpTool *tool = GIMP_TOOL (crop_tool); + + switch (response_id) + { + case GIMP_TOOL_WIDGET_RESPONSE_CONFIRM: + gimp_tool_control (tool, GIMP_TOOL_ACTION_COMMIT, tool->display); + break; + + case GIMP_TOOL_WIDGET_RESPONSE_CANCEL: + gimp_tool_control (tool, GIMP_TOOL_ACTION_HALT, tool->display); + break; + } +} + +static void +gimp_crop_tool_rectangle_change_complete (GimpToolRectangle *rectangle, + GimpCropTool *crop_tool) +{ + gimp_crop_tool_update_option_defaults (crop_tool, FALSE); +} + +static void +gimp_crop_tool_start (GimpCropTool *crop_tool, + GimpDisplay *display) +{ + static const gchar *properties[] = + { + "highlight", + "highlight-opacity", + "guide", + "x", + "y", + "width", + "height", + "fixed-rule-active", + "fixed-rule", + "desired-fixed-width", + "desired-fixed-height", + "desired-fixed-size-width", + "desired-fixed-size-height", + "aspect-numerator", + "aspect-denominator", + "fixed-center" + }; + + GimpTool *tool = GIMP_TOOL (crop_tool); + GimpDisplayShell *shell = gimp_display_get_shell (display); + GimpCropOptions *options = GIMP_CROP_TOOL_GET_OPTIONS (crop_tool); + GimpToolWidget *widget; + gint i; + + tool->display = display; + + crop_tool->widget = widget = gimp_tool_rectangle_new (shell); + + g_object_set (widget, + "status-title", _("Crop to: "), + NULL); + + gimp_draw_tool_set_widget (GIMP_DRAW_TOOL (tool), widget); + + for (i = 0; i < G_N_ELEMENTS (properties); i++) + { + GBinding *binding = + g_object_bind_property (G_OBJECT (options), properties[i], + G_OBJECT (widget), properties[i], + G_BINDING_SYNC_CREATE | + G_BINDING_BIDIRECTIONAL); + + crop_tool->bindings = g_list_prepend (crop_tool->bindings, binding); + } + + gimp_rectangle_options_connect (GIMP_RECTANGLE_OPTIONS (options), + gimp_display_get_image (shell->display), + G_CALLBACK (gimp_crop_tool_auto_shrink), + crop_tool); + + gimp_tool_rectangle_set_constraint (GIMP_TOOL_RECTANGLE (widget), + gimp_crop_tool_get_constraint (crop_tool)); + + g_signal_connect (widget, "changed", + G_CALLBACK (gimp_crop_tool_rectangle_changed), + crop_tool); + g_signal_connect (widget, "response", + G_CALLBACK (gimp_crop_tool_rectangle_response), + crop_tool); + g_signal_connect (widget, "change-complete", + G_CALLBACK (gimp_crop_tool_rectangle_change_complete), + crop_tool); + + gimp_draw_tool_start (GIMP_DRAW_TOOL (tool), display); +} + +static void +gimp_crop_tool_commit (GimpCropTool *crop_tool) +{ + GimpTool *tool = GIMP_TOOL (crop_tool); + + if (tool->display) + { + GimpCropOptions *options = GIMP_CROP_TOOL_GET_OPTIONS (tool); + GimpImage *image = gimp_display_get_image (tool->display); + gdouble x, y; + gdouble x2, y2; + gint w, h; + + gimp_tool_rectangle_get_public_rect (GIMP_TOOL_RECTANGLE (crop_tool->widget), + &x, &y, &x2, &y2); + w = x2 - x; + h = y2 - y; + + gimp_tool_pop_status (tool, tool->display); + + /* if rectangle exists, crop it */ + if (w > 0 && h > 0) + { + if (options->layer_only) + { + GimpLayer *layer = gimp_image_get_active_layer (image); + gint off_x, off_y; + + if (! layer) + { + gimp_tool_message_literal (tool, tool->display, + _("There is no active layer to crop.")); + return; + } + + if (gimp_item_is_content_locked (GIMP_ITEM (layer))) + { + gimp_tool_message_literal (tool, tool->display, + _("The active layer's pixels are locked.")); + gimp_tools_blink_lock_box (tool->display->gimp, + GIMP_ITEM (layer)); + return; + } + + gimp_item_get_offset (GIMP_ITEM (layer), &off_x, &off_y); + + off_x -= x; + off_y -= y; + + gimp_item_resize (GIMP_ITEM (layer), + GIMP_CONTEXT (options), options->fill_type, + w, h, off_x, off_y); + } + else + { + gimp_image_crop (image, + GIMP_CONTEXT (options), GIMP_FILL_TRANSPARENT, + x, y, w, h, options->delete_pixels); + } + + gimp_image_flush (image); + } + } +} + +static void +gimp_crop_tool_halt (GimpCropTool *crop_tool) +{ + GimpTool *tool = GIMP_TOOL (crop_tool); + GimpCropOptions *options = GIMP_CROP_TOOL_GET_OPTIONS (crop_tool); + + if (tool->display) + { + GimpDisplayShell *shell = gimp_display_get_shell (tool->display); + + gimp_display_shell_set_highlight (shell, NULL, 0.0); + + gimp_rectangle_options_disconnect (GIMP_RECTANGLE_OPTIONS (options), + G_CALLBACK (gimp_crop_tool_auto_shrink), + crop_tool); + } + + if (gimp_draw_tool_is_active (GIMP_DRAW_TOOL (tool))) + gimp_draw_tool_stop (GIMP_DRAW_TOOL (tool)); + + /* disconnect bindings manually so they are really gone *now*, we + * might be in the middle of a signal emission that keeps the + * widget and its bindings alive. + */ + g_list_free_full (crop_tool->bindings, (GDestroyNotify) g_object_unref); + crop_tool->bindings = NULL; + + gimp_draw_tool_set_widget (GIMP_DRAW_TOOL (tool), NULL); + g_clear_object (&crop_tool->widget); + + tool->display = NULL; + tool->drawable = NULL; + + gimp_crop_tool_update_option_defaults (crop_tool, TRUE); +} + +/** + * gimp_crop_tool_update_option_defaults: + * @crop_tool: + * @ignore_pending: %TRUE to ignore any pending crop rectangle. + * + * Sets the default Fixed: Aspect ratio and Fixed: Size option + * properties. + */ +static void +gimp_crop_tool_update_option_defaults (GimpCropTool *crop_tool, + gboolean ignore_pending) +{ + GimpTool *tool = GIMP_TOOL (crop_tool); + GimpToolRectangle *rectangle = GIMP_TOOL_RECTANGLE (crop_tool->widget); + GimpRectangleOptions *options; + + options = GIMP_RECTANGLE_OPTIONS (GIMP_TOOL_GET_OPTIONS (tool)); + + if (rectangle && ! ignore_pending) + { + /* There is a pending rectangle and we should not ignore it, so + * set default Fixed: Aspect ratio to the same as the current + * pending rectangle width/height. + */ + + gimp_tool_rectangle_pending_size_set (rectangle, + G_OBJECT (options), + "default-aspect-numerator", + "default-aspect-denominator"); + + g_object_set (G_OBJECT (options), + "use-string-current", TRUE, + NULL); + } + else + { + /* There is no pending rectangle, set default Fixed: Aspect + * ratio to that of the current image/layer. + */ + + if (! rectangle) + { + /* ugly hack: if we don't have a widget, construct a temporary one + * so that we can use it to call + * gimp_tool_rectangle_constraint_size_set(). + */ + + GimpContext *context = gimp_get_user_context (tool->tool_info->gimp); + GimpDisplay *display = gimp_context_get_display (context); + + if (display) + { + GimpDisplayShell *shell = gimp_display_get_shell (display); + + rectangle = GIMP_TOOL_RECTANGLE (gimp_tool_rectangle_new (shell)); + + gimp_tool_rectangle_set_constraint ( + rectangle, gimp_crop_tool_get_constraint (crop_tool)); + } + } + + if (rectangle) + { + gimp_tool_rectangle_constraint_size_set (rectangle, + G_OBJECT (options), + "default-aspect-numerator", + "default-aspect-denominator"); + + if (! crop_tool->widget) + g_object_unref (rectangle); + } + + g_object_set (G_OBJECT (options), + "use-string-current", FALSE, + NULL); + } +} + +static GimpRectangleConstraint +gimp_crop_tool_get_constraint (GimpCropTool *crop_tool) +{ + GimpCropOptions *crop_options = GIMP_CROP_TOOL_GET_OPTIONS (crop_tool); + + if (crop_options->allow_growing) + { + return GIMP_RECTANGLE_CONSTRAIN_NONE; + } + else + { + return crop_options->layer_only ? GIMP_RECTANGLE_CONSTRAIN_DRAWABLE : + GIMP_RECTANGLE_CONSTRAIN_IMAGE; + } +} + +static void +gimp_crop_tool_image_changed (GimpCropTool *crop_tool, + GimpImage *image, + GimpContext *context) +{ + if (crop_tool->current_image) + { + g_signal_handlers_disconnect_by_func (crop_tool->current_image, + gimp_crop_tool_image_size_changed, + NULL); + g_signal_handlers_disconnect_by_func (crop_tool->current_image, + gimp_crop_tool_image_active_layer_changed, + NULL); + + g_object_remove_weak_pointer (G_OBJECT (crop_tool->current_image), + (gpointer) &crop_tool->current_image); + } + + crop_tool->current_image = image; + + if (crop_tool->current_image) + { + g_object_add_weak_pointer (G_OBJECT (crop_tool->current_image), + (gpointer) &crop_tool->current_image); + + g_signal_connect_object (crop_tool->current_image, "size-changed", + G_CALLBACK (gimp_crop_tool_image_size_changed), + crop_tool, + G_CONNECT_SWAPPED); + g_signal_connect_object (crop_tool->current_image, "active-layer-changed", + G_CALLBACK (gimp_crop_tool_image_active_layer_changed), + crop_tool, + G_CONNECT_SWAPPED); + } + + /* Make sure we are connected to "size-changed" for the initial + * layer. + */ + gimp_crop_tool_image_active_layer_changed (crop_tool); + + gimp_crop_tool_update_option_defaults (GIMP_CROP_TOOL (crop_tool), FALSE); +} + +static void +gimp_crop_tool_image_size_changed (GimpCropTool *crop_tool) +{ + gimp_crop_tool_update_option_defaults (crop_tool, FALSE); +} + +static void +gimp_crop_tool_image_active_layer_changed (GimpCropTool *crop_tool) +{ + if (crop_tool->current_layer) + { + g_signal_handlers_disconnect_by_func (crop_tool->current_layer, + gimp_crop_tool_layer_size_changed, + NULL); + + g_object_remove_weak_pointer (G_OBJECT (crop_tool->current_layer), + (gpointer) &crop_tool->current_layer); + } + + if (crop_tool->current_image) + { + crop_tool->current_layer = + gimp_image_get_active_layer (crop_tool->current_image); + } + else + { + crop_tool->current_layer = NULL; + } + + if (crop_tool->current_layer) + { + g_object_add_weak_pointer (G_OBJECT (crop_tool->current_layer), + (gpointer) &crop_tool->current_layer); + + g_signal_connect_object (crop_tool->current_layer, "size-changed", + G_CALLBACK (gimp_crop_tool_layer_size_changed), + crop_tool, + G_CONNECT_SWAPPED); + } + + gimp_crop_tool_update_option_defaults (crop_tool, FALSE); +} + +static void +gimp_crop_tool_layer_size_changed (GimpCropTool *crop_tool) +{ + gimp_crop_tool_update_option_defaults (crop_tool, FALSE); +} + +static void +gimp_crop_tool_auto_shrink (GimpCropTool *crop_tool) +{ + gboolean shrink_merged ; + + g_object_get (gimp_tool_get_options (GIMP_TOOL (crop_tool)), + "shrink-merged", &shrink_merged, + NULL); + + gimp_tool_rectangle_auto_shrink (GIMP_TOOL_RECTANGLE (crop_tool->widget), + shrink_merged); +} |