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-rw-r--r--app/tools/gimptransformtool.c925
1 files changed, 925 insertions, 0 deletions
diff --git a/app/tools/gimptransformtool.c b/app/tools/gimptransformtool.c
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--- /dev/null
+++ b/app/tools/gimptransformtool.c
@@ -0,0 +1,925 @@
+/* GIMP - The GNU Image Manipulation Program
+ * Copyright (C) 1995-2001 Spencer Kimball, Peter Mattis, and others
+ *
+ * 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 "libgimpmath/gimpmath.h"
+#include "libgimpwidgets/gimpwidgets.h"
+
+#include "tools-types.h"
+
+#include "config/gimpguiconfig.h"
+
+#include "core/gimp.h"
+#include "core/gimpdrawable-transform.h"
+#include "core/gimperror.h"
+#include "core/gimpimage.h"
+#include "core/gimpimage-item-list.h"
+#include "core/gimpimage-transform.h"
+#include "core/gimpimage-undo.h"
+#include "core/gimpitem-linked.h"
+#include "core/gimplayer.h"
+#include "core/gimplayermask.h"
+#include "core/gimpprogress.h"
+#include "core/gimp-transform-resize.h"
+
+#include "vectors/gimpvectors.h"
+
+#include "display/gimpdisplay.h"
+#include "display/gimpdisplayshell.h"
+
+#include "widgets/gimpmessagedialog.h"
+#include "widgets/gimpmessagebox.h"
+#include "widgets/gimpwidgets-utils.h"
+
+#include "gimptoolcontrol.h"
+#include "gimptools-utils.h"
+#include "gimptransformoptions.h"
+#include "gimptransformtool.h"
+
+#include "gimp-intl.h"
+
+
+/* the minimal ratio between the transformed item size and the image size,
+ * above which confirmation is required.
+ */
+#define MIN_CONFIRMATION_RATIO 10
+
+
+/* local function prototypes */
+
+static void gimp_transform_tool_control (GimpTool *tool,
+ GimpToolAction action,
+ GimpDisplay *display);
+
+static gchar * gimp_transform_tool_real_get_undo_desc (GimpTransformTool *tr_tool);
+static GimpTransformDirection gimp_transform_tool_real_get_direction (GimpTransformTool *tr_tool);
+static GeglBuffer * gimp_transform_tool_real_transform (GimpTransformTool *tr_tool,
+ GimpObject *object,
+ GeglBuffer *orig_buffer,
+ gint orig_offset_x,
+ gint orig_offset_y,
+ GimpColorProfile **buffer_profile,
+ gint *new_offset_x,
+ gint *new_offset_y);
+
+static void gimp_transform_tool_halt (GimpTransformTool *tr_tool);
+
+static gboolean gimp_transform_tool_confirm (GimpTransformTool *tr_tool,
+ GimpDisplay *display);
+
+
+G_DEFINE_TYPE (GimpTransformTool, gimp_transform_tool, GIMP_TYPE_DRAW_TOOL)
+
+#define parent_class gimp_transform_tool_parent_class
+
+
+/* private functions */
+
+
+static void
+gimp_transform_tool_class_init (GimpTransformToolClass *klass)
+{
+ GimpToolClass *tool_class = GIMP_TOOL_CLASS (klass);
+
+ tool_class->control = gimp_transform_tool_control;
+
+ klass->recalc_matrix = NULL;
+ klass->get_undo_desc = gimp_transform_tool_real_get_undo_desc;
+ klass->get_direction = gimp_transform_tool_real_get_direction;
+ klass->transform = gimp_transform_tool_real_transform;
+
+ klass->undo_desc = _("Transform");
+ klass->progress_text = _("Transforming");
+}
+
+static void
+gimp_transform_tool_init (GimpTransformTool *tr_tool)
+{
+ gimp_matrix3_identity (&tr_tool->transform);
+ tr_tool->transform_valid = TRUE;
+
+ tr_tool->restore_type = FALSE;
+}
+
+static void
+gimp_transform_tool_control (GimpTool *tool,
+ GimpToolAction action,
+ GimpDisplay *display)
+{
+ GimpTransformTool *tr_tool = GIMP_TRANSFORM_TOOL (tool);
+
+ switch (action)
+ {
+ case GIMP_TOOL_ACTION_PAUSE:
+ case GIMP_TOOL_ACTION_RESUME:
+ break;
+
+ case GIMP_TOOL_ACTION_HALT:
+ gimp_transform_tool_halt (tr_tool);
+ break;
+
+ case GIMP_TOOL_ACTION_COMMIT:
+ break;
+ }
+
+ GIMP_TOOL_CLASS (parent_class)->control (tool, action, display);
+}
+
+static gchar *
+gimp_transform_tool_real_get_undo_desc (GimpTransformTool *tr_tool)
+{
+ return g_strdup (GIMP_TRANSFORM_TOOL_GET_CLASS (tr_tool)->undo_desc);
+}
+
+static GimpTransformDirection
+gimp_transform_tool_real_get_direction (GimpTransformTool *tr_tool)
+{
+ GimpTransformOptions *options = GIMP_TRANSFORM_TOOL_GET_OPTIONS (tr_tool);
+
+ return options->direction;
+}
+
+static GeglBuffer *
+gimp_transform_tool_real_transform (GimpTransformTool *tr_tool,
+ GimpObject *object,
+ GeglBuffer *orig_buffer,
+ gint orig_offset_x,
+ gint orig_offset_y,
+ GimpColorProfile **buffer_profile,
+ gint *new_offset_x,
+ gint *new_offset_y)
+{
+ GimpTransformToolClass *klass = GIMP_TRANSFORM_TOOL_GET_CLASS (tr_tool);
+ GimpTool *tool = GIMP_TOOL (tr_tool);
+ GimpTransformOptions *options = GIMP_TRANSFORM_TOOL_GET_OPTIONS (tool);
+ GimpContext *context = GIMP_CONTEXT (options);
+ GeglBuffer *ret = NULL;
+ GimpTransformResize clip = options->clip;
+ GimpTransformDirection direction;
+ GimpProgress *progress;
+
+ direction = GIMP_TRANSFORM_TOOL_GET_CLASS (tr_tool)->get_direction (tr_tool);
+
+ progress = gimp_progress_start (GIMP_PROGRESS (tool), FALSE,
+ "%s", klass->progress_text);
+
+ if (orig_buffer)
+ {
+ /* this happens when transforming a selection cut out of a
+ * normal drawable
+ */
+
+ g_return_val_if_fail (GIMP_IS_DRAWABLE (object), NULL);
+
+ ret = gimp_drawable_transform_buffer_affine (GIMP_DRAWABLE (object),
+ context,
+ orig_buffer,
+ orig_offset_x,
+ orig_offset_y,
+ &tr_tool->transform,
+ direction,
+ options->interpolation,
+ clip,
+ buffer_profile,
+ new_offset_x,
+ new_offset_y,
+ progress);
+ }
+ else if (GIMP_IS_ITEM (object))
+ {
+ /* this happens for entire drawables, paths and layer groups */
+
+ GimpItem *item = GIMP_ITEM (object);
+
+ if (gimp_item_get_linked (item))
+ {
+ gimp_item_linked_transform (item, context,
+ &tr_tool->transform,
+ direction,
+ options->interpolation,
+ clip,
+ progress);
+ }
+ else
+ {
+ clip = gimp_item_get_clip (item, clip);
+
+ gimp_item_transform (item, context,
+ &tr_tool->transform,
+ direction,
+ options->interpolation,
+ clip,
+ progress);
+ }
+ }
+ else
+ {
+ /* this happens for images */
+
+ g_return_val_if_fail (GIMP_IS_IMAGE (object), NULL);
+
+ gimp_image_transform (GIMP_IMAGE (object), context,
+ &tr_tool->transform,
+ direction,
+ options->interpolation,
+ clip,
+ progress);
+ }
+
+ if (progress)
+ gimp_progress_end (progress);
+
+ return ret;
+}
+
+static void
+gimp_transform_tool_halt (GimpTransformTool *tr_tool)
+{
+ GimpTransformOptions *options = GIMP_TRANSFORM_TOOL_GET_OPTIONS (tr_tool);
+
+ tr_tool->x1 = 0;
+ tr_tool->y1 = 0;
+ tr_tool->x2 = 0;
+ tr_tool->y2 = 0;
+
+ if (tr_tool->restore_type)
+ {
+ g_object_set (options,
+ "type", tr_tool->saved_type,
+ NULL);
+
+ tr_tool->restore_type = FALSE;
+ }
+}
+
+static gboolean
+gimp_transform_tool_confirm (GimpTransformTool *tr_tool,
+ GimpDisplay *display)
+{
+ GimpTransformOptions *options = GIMP_TRANSFORM_TOOL_GET_OPTIONS (tr_tool);
+ GimpDisplayShell *shell = gimp_display_get_shell (display);
+ GimpImage *image = gimp_display_get_image (display);
+ GimpObject *active_object;
+ gdouble max_ratio = 0.0;
+ GimpObject *max_ratio_object = NULL;
+
+ active_object = gimp_transform_tool_get_active_object (tr_tool, display);
+
+ if (GIMP_TRANSFORM_TOOL_GET_CLASS (tr_tool)->recalc_matrix)
+ {
+ GimpMatrix3 transform;
+ GimpTransformDirection direction;
+ GeglRectangle selection_bounds;
+ gboolean selection_empty = TRUE;
+ GList *objects;
+ GList *iter;
+
+ transform = tr_tool->transform;
+ direction = GIMP_TRANSFORM_TOOL_GET_CLASS (tr_tool)->get_direction (
+ tr_tool);
+
+ if (direction == GIMP_TRANSFORM_BACKWARD)
+ gimp_matrix3_invert (&transform);
+
+ if (options->type == GIMP_TRANSFORM_TYPE_LAYER &&
+ ! gimp_viewable_get_children (GIMP_VIEWABLE (active_object)))
+ {
+ selection_empty = ! gimp_item_bounds (
+ GIMP_ITEM (gimp_image_get_mask (image)),
+ &selection_bounds.x, &selection_bounds.y,
+ &selection_bounds.width, &selection_bounds.height);
+ }
+
+ if (selection_empty &&
+ GIMP_IS_ITEM (active_object) &&
+ gimp_item_get_linked (GIMP_ITEM (active_object)))
+ {
+ objects = gimp_image_item_list_get_list (image,
+ GIMP_ITEM_TYPE_ALL,
+ GIMP_ITEM_SET_LINKED);
+ }
+ else
+ {
+ objects = g_list_append (NULL, active_object);
+ }
+
+ if (options->type == GIMP_TRANSFORM_TYPE_IMAGE)
+ {
+ objects = g_list_concat (
+ objects,
+ gimp_image_item_list_get_list (image,
+ GIMP_ITEM_TYPE_ALL,
+ GIMP_ITEM_SET_ALL));
+ }
+
+ for (iter = objects; iter; iter = g_list_next (iter))
+ {
+ GimpObject *object = iter->data;
+ GimpTransformResize clip = options->clip;
+ GeglRectangle orig_bounds;
+ GeglRectangle new_bounds;
+ gdouble ratio = 0.0;
+
+ if (GIMP_IS_DRAWABLE (object))
+ {
+ if (selection_empty)
+ {
+ GimpItem *item = GIMP_ITEM (object);
+
+ gimp_item_get_offset (item, &orig_bounds.x, &orig_bounds.y);
+
+ orig_bounds.width = gimp_item_get_width (item);
+ orig_bounds.height = gimp_item_get_height (item);
+
+ clip = gimp_item_get_clip (item, clip);
+ }
+ else
+ {
+ orig_bounds = selection_bounds;
+ }
+ }
+ else if (GIMP_IS_ITEM (object))
+ {
+ GimpItem *item = GIMP_ITEM (object);
+
+ gimp_item_bounds (item,
+ &orig_bounds.x, &orig_bounds.y,
+ &orig_bounds.width, &orig_bounds.height);
+
+ clip = gimp_item_get_clip (item, clip);
+ }
+ else
+ {
+ GimpImage *image;
+
+ g_return_val_if_fail (GIMP_IS_IMAGE (object), FALSE);
+
+ image = GIMP_IMAGE (object);
+
+ orig_bounds.x = 0;
+ orig_bounds.y = 0;
+ orig_bounds.width = gimp_image_get_width (image);
+ orig_bounds.height = gimp_image_get_height (image);
+ }
+
+ gimp_transform_resize_boundary (&transform, clip,
+
+ orig_bounds.x,
+ orig_bounds.y,
+ orig_bounds.x + orig_bounds.width,
+ orig_bounds.y + orig_bounds.height,
+
+ &new_bounds.x,
+ &new_bounds.y,
+ &new_bounds.width,
+ &new_bounds.height);
+
+ new_bounds.width -= new_bounds.x;
+ new_bounds.height -= new_bounds.y;
+
+ if (new_bounds.width > orig_bounds.width)
+ {
+ ratio = MAX (ratio,
+ (gdouble) new_bounds.width /
+ (gdouble) gimp_image_get_width (image));
+ }
+
+ if (new_bounds.height > orig_bounds.height)
+ {
+ ratio = MAX (ratio,
+ (gdouble) new_bounds.height /
+ (gdouble) gimp_image_get_height (image));
+ }
+
+ if (ratio > max_ratio)
+ {
+ max_ratio = ratio;
+ max_ratio_object = object;
+ }
+ }
+
+ g_list_free (objects);
+ }
+
+ if (max_ratio > MIN_CONFIRMATION_RATIO)
+ {
+ GtkWidget *dialog;
+ gint response;
+
+ dialog = gimp_message_dialog_new (_("Confirm Transformation"),
+ GIMP_ICON_DIALOG_WARNING,
+ GTK_WIDGET (shell),
+ GTK_DIALOG_MODAL |
+ GTK_DIALOG_DESTROY_WITH_PARENT,
+ gimp_standard_help_func, NULL,
+
+ _("_Cancel"), GTK_RESPONSE_CANCEL,
+ _("_Transform"), GTK_RESPONSE_OK,
+
+ NULL);
+
+ gtk_dialog_set_alternative_button_order (GTK_DIALOG (dialog),
+ GTK_RESPONSE_OK,
+ GTK_RESPONSE_CANCEL,
+ -1);
+
+ if (GIMP_IS_ITEM (max_ratio_object))
+ {
+ gimp_message_box_set_primary_text (GIMP_MESSAGE_DIALOG (dialog)->box,
+ _("Transformation creates "
+ "a very large item."));
+
+ gimp_message_box_set_text (
+ GIMP_MESSAGE_DIALOG (dialog)->box,
+ _("Applying the transformation will result "
+ "in an item that is over %g times larger "
+ "than the image."),
+ floor (max_ratio));
+ }
+ else
+ {
+ gimp_message_box_set_primary_text (GIMP_MESSAGE_DIALOG (dialog)->box,
+ _("Transformation creates "
+ "a very large image."));
+
+ gimp_message_box_set_text (
+ GIMP_MESSAGE_DIALOG (dialog)->box,
+ _("Applying the transformation will enlarge "
+ "the image by a factor of %g."),
+ floor (max_ratio));
+ }
+
+ response = gtk_dialog_run (GTK_DIALOG (dialog));
+
+ gtk_widget_destroy (dialog);
+
+ if (response != GTK_RESPONSE_OK)
+ return FALSE;
+ }
+
+ return TRUE;
+}
+
+
+/* public functions */
+
+
+gboolean
+gimp_transform_tool_bounds (GimpTransformTool *tr_tool,
+ GimpDisplay *display)
+{
+ GimpTransformOptions *options;
+ GimpDisplayShell *shell;
+ GimpImage *image;
+ gboolean non_empty = TRUE;
+
+ g_return_val_if_fail (GIMP_IS_TRANSFORM_TOOL (tr_tool), FALSE);
+
+ options = GIMP_TRANSFORM_TOOL_GET_OPTIONS (tr_tool);
+ image = gimp_display_get_image (display);
+ shell = gimp_display_get_shell (display);
+
+ g_return_val_if_fail (GIMP_IS_IMAGE (image), FALSE);
+
+ switch (options->type)
+ {
+ case GIMP_TRANSFORM_TYPE_LAYER:
+ {
+ GimpDrawable *drawable;
+ gint offset_x;
+ gint offset_y;
+ gint x, y;
+ gint width, height;
+
+ drawable = gimp_image_get_active_drawable (image);
+
+ gimp_item_get_offset (GIMP_ITEM (drawable), &offset_x, &offset_y);
+
+ non_empty = gimp_item_mask_intersect (GIMP_ITEM (drawable),
+ &x, &y, &width, &height);
+ tr_tool->x1 = x + offset_x;
+ tr_tool->y1 = y + offset_y;
+ tr_tool->x2 = x + width + offset_x;
+ tr_tool->y2 = y + height + offset_y;
+ }
+ break;
+
+ case GIMP_TRANSFORM_TYPE_SELECTION:
+ {
+ gimp_item_bounds (GIMP_ITEM (gimp_image_get_mask (image)),
+ &tr_tool->x1, &tr_tool->y1,
+ &tr_tool->x2, &tr_tool->y2);
+ tr_tool->x2 += tr_tool->x1;
+ tr_tool->y2 += tr_tool->y1;
+ }
+ break;
+
+ case GIMP_TRANSFORM_TYPE_PATH:
+ {
+ GimpChannel *selection = gimp_image_get_mask (image);
+
+ /* if selection is not empty, use its bounds to perform the
+ * transformation of the path
+ */
+
+ if (! gimp_channel_is_empty (selection))
+ {
+ gimp_item_bounds (GIMP_ITEM (selection),
+ &tr_tool->x1, &tr_tool->y1,
+ &tr_tool->x2, &tr_tool->y2);
+ }
+ else
+ {
+ /* without selection, test the emptiness of the path bounds :
+ * if empty, use the canvas bounds
+ * else use the path bounds
+ */
+
+ if (! gimp_item_bounds (GIMP_ITEM (gimp_image_get_active_vectors (image)),
+ &tr_tool->x1, &tr_tool->y1,
+ &tr_tool->x2, &tr_tool->y2))
+ {
+ tr_tool->x1 = 0;
+ tr_tool->y1 = 0;
+ tr_tool->x2 = gimp_image_get_width (image);
+ tr_tool->y2 = gimp_image_get_height (image);
+ }
+ }
+
+ tr_tool->x2 += tr_tool->x1;
+ tr_tool->y2 += tr_tool->y1;
+ }
+
+ break;
+
+ case GIMP_TRANSFORM_TYPE_IMAGE:
+ if (! shell->show_all)
+ {
+ tr_tool->x1 = 0;
+ tr_tool->y1 = 0;
+ tr_tool->x2 = gimp_image_get_width (image);
+ tr_tool->y2 = gimp_image_get_height (image);
+ }
+ else
+ {
+ GeglRectangle bounding_box;
+
+ bounding_box = gimp_display_shell_get_bounding_box (shell);
+
+ tr_tool->x1 = bounding_box.x;
+ tr_tool->y1 = bounding_box.y;
+ tr_tool->x2 = bounding_box.x + bounding_box.width;
+ tr_tool->y2 = bounding_box.y + bounding_box.height;
+ }
+ break;
+ }
+
+ return non_empty;
+}
+
+void
+gimp_transform_tool_recalc_matrix (GimpTransformTool *tr_tool,
+ GimpDisplay *display)
+{
+ g_return_if_fail (GIMP_IS_TRANSFORM_TOOL (tr_tool));
+ g_return_if_fail (GIMP_IS_DISPLAY (display));
+
+ if (tr_tool->x1 == tr_tool->x2 && tr_tool->y1 == tr_tool->y2)
+ gimp_transform_tool_bounds (tr_tool, display);
+
+ if (GIMP_TRANSFORM_TOOL_GET_CLASS (tr_tool)->recalc_matrix)
+ GIMP_TRANSFORM_TOOL_GET_CLASS (tr_tool)->recalc_matrix (tr_tool);
+}
+
+GimpObject *
+gimp_transform_tool_get_active_object (GimpTransformTool *tr_tool,
+ GimpDisplay *display)
+{
+ GimpTransformOptions *options;
+ GimpImage *image;
+ GimpObject *object = NULL;
+
+ g_return_val_if_fail (GIMP_IS_TRANSFORM_TOOL (tr_tool), NULL);
+ g_return_val_if_fail (GIMP_IS_DISPLAY (display), NULL);
+
+ options = GIMP_TRANSFORM_TOOL_GET_OPTIONS (tr_tool);
+
+ image = gimp_display_get_image (display);
+
+ g_return_val_if_fail (GIMP_IS_IMAGE (image), NULL);
+
+ if (tr_tool->object)
+ return tr_tool->object;
+
+ switch (options->type)
+ {
+ case GIMP_TRANSFORM_TYPE_LAYER:
+ object = GIMP_OBJECT (gimp_image_get_active_drawable (image));
+ break;
+
+ case GIMP_TRANSFORM_TYPE_SELECTION:
+ object = GIMP_OBJECT (gimp_image_get_mask (image));
+
+ if (gimp_channel_is_empty (GIMP_CHANNEL (object)))
+ object = NULL;
+ break;
+
+ case GIMP_TRANSFORM_TYPE_PATH:
+ object = GIMP_OBJECT (gimp_image_get_active_vectors (image));
+ break;
+
+ case GIMP_TRANSFORM_TYPE_IMAGE:
+ object = GIMP_OBJECT (image);
+ break;
+ }
+
+ return object;
+}
+
+GimpObject *
+gimp_transform_tool_check_active_object (GimpTransformTool *tr_tool,
+ GimpDisplay *display,
+ GError **error)
+{
+ GimpTransformOptions *options;
+ GimpObject *object;
+ const gchar *null_message = NULL;
+ const gchar *locked_message = NULL;
+ GimpGuiConfig *config = GIMP_GUI_CONFIG (display->gimp->config);
+
+ g_return_val_if_fail (GIMP_IS_TRANSFORM_TOOL (tr_tool), NULL);
+ g_return_val_if_fail (GIMP_IS_DISPLAY (display), NULL);
+ g_return_val_if_fail (error == NULL || *error == NULL, NULL);
+
+ options = GIMP_TRANSFORM_TOOL_GET_OPTIONS (tr_tool);
+
+ object = gimp_transform_tool_get_active_object (tr_tool, display);
+
+ switch (options->type)
+ {
+ case GIMP_TRANSFORM_TYPE_LAYER:
+ null_message = _("There is no layer to transform.");
+
+ if (object)
+ {
+ GimpItem *item = GIMP_ITEM (object);
+
+ if (gimp_item_is_content_locked (item))
+ locked_message = _("The active layer's pixels are locked.");
+ else if (gimp_item_is_position_locked (item))
+ locked_message = _("The active layer's position and size are locked.");
+
+ if (! gimp_item_is_visible (item) &&
+ ! config->edit_non_visible &&
+ object != tr_tool->object) /* see bug #759194 */
+ {
+ g_set_error_literal (error, GIMP_ERROR, GIMP_FAILED,
+ _("The active layer is not visible."));
+ return NULL;
+ }
+
+ if (! gimp_transform_tool_bounds (tr_tool, display))
+ {
+ g_set_error_literal (error, GIMP_ERROR, GIMP_FAILED,
+ _("The selection does not intersect with the layer."));
+ return NULL;
+ }
+ }
+ break;
+
+ case GIMP_TRANSFORM_TYPE_SELECTION:
+ null_message = _("There is no selection to transform.");
+
+ if (object)
+ {
+ GimpItem *item = GIMP_ITEM (object);
+
+ /* cannot happen, so don't translate these messages */
+ if (gimp_item_is_content_locked (item))
+ locked_message = "The selection's pixels are locked.";
+ else if (gimp_item_is_position_locked (item))
+ locked_message = "The selection's position and size are locked.";
+ }
+ break;
+
+ case GIMP_TRANSFORM_TYPE_PATH:
+ null_message = _("There is no path to transform.");
+
+ if (object)
+ {
+ GimpItem *item = GIMP_ITEM (object);
+
+ if (gimp_item_is_content_locked (item))
+ locked_message = _("The active path's strokes are locked.");
+ else if (gimp_item_is_position_locked (item))
+ locked_message = _("The active path's position is locked.");
+ else if (! gimp_vectors_get_n_strokes (GIMP_VECTORS (item)))
+ locked_message = _("The active path has no strokes.");
+ }
+ break;
+
+ case GIMP_TRANSFORM_TYPE_IMAGE:
+ /* cannot happen, so don't translate this message */
+ null_message = "There is no image to transform.";
+ break;
+ }
+
+ if (! object)
+ {
+ g_set_error_literal (error, GIMP_ERROR, GIMP_FAILED, null_message);
+ if (error)
+ gimp_widget_blink (options->type_box);
+ return NULL;
+ }
+
+ if (locked_message)
+ {
+ g_set_error_literal (error, GIMP_ERROR, GIMP_FAILED, locked_message);
+ if (error)
+ gimp_tools_blink_lock_box (display->gimp, GIMP_ITEM (object));
+ return NULL;
+ }
+
+ return object;
+}
+
+gboolean
+gimp_transform_tool_transform (GimpTransformTool *tr_tool,
+ GimpDisplay *display)
+{
+ GimpTool *tool;
+ GimpTransformOptions *options;
+ GimpContext *context;
+ GimpImage *image;
+ GimpObject *active_object;
+ GeglBuffer *orig_buffer = NULL;
+ gint orig_offset_x = 0;
+ gint orig_offset_y = 0;
+ GeglBuffer *new_buffer;
+ gint new_offset_x;
+ gint new_offset_y;
+ GimpColorProfile *buffer_profile;
+ gchar *undo_desc = NULL;
+ gboolean new_layer = FALSE;
+ GError *error = NULL;
+
+ g_return_val_if_fail (GIMP_IS_TRANSFORM_TOOL (tr_tool), FALSE);
+ g_return_val_if_fail (GIMP_IS_DISPLAY (display), FALSE);
+
+ tool = GIMP_TOOL (tr_tool);
+ options = GIMP_TRANSFORM_TOOL_GET_OPTIONS (tool);
+ context = GIMP_CONTEXT (options);
+ image = gimp_display_get_image (display);
+
+ g_return_val_if_fail (GIMP_IS_IMAGE (image), FALSE);
+
+ active_object = gimp_transform_tool_check_active_object (tr_tool, display,
+ &error);
+
+ if (! active_object)
+ {
+ gimp_tool_message_literal (tool, display, error->message);
+ g_clear_error (&error);
+ return FALSE;
+ }
+
+ gimp_transform_tool_recalc_matrix (tr_tool, display);
+
+ if (! tr_tool->transform_valid)
+ {
+ gimp_tool_message_literal (tool, display,
+ _("The current transform is invalid"));
+ return FALSE;
+ }
+
+ if (GIMP_TRANSFORM_TOOL_GET_CLASS (tr_tool)->recalc_matrix &&
+ gimp_matrix3_is_identity (&tr_tool->transform))
+ {
+ /* No need to commit an identity transformation! */
+ return TRUE;
+ }
+
+ if (! gimp_transform_tool_confirm (tr_tool, display))
+ return FALSE;
+
+ gimp_set_busy (display->gimp);
+
+ /* We're going to dirty this image, but we want to keep the tool around */
+ gimp_tool_control_push_preserve (tool->control, TRUE);
+
+ undo_desc = GIMP_TRANSFORM_TOOL_GET_CLASS (tr_tool)->get_undo_desc (tr_tool);
+ gimp_image_undo_group_start (image, GIMP_UNDO_GROUP_TRANSFORM, undo_desc);
+ g_free (undo_desc);
+
+ switch (options->type)
+ {
+ case GIMP_TRANSFORM_TYPE_LAYER:
+ if (! gimp_viewable_get_children (GIMP_VIEWABLE (active_object)) &&
+ ! gimp_channel_is_empty (gimp_image_get_mask (image)))
+ {
+ orig_buffer = gimp_drawable_transform_cut (
+ GIMP_DRAWABLE (active_object),
+ context,
+ &orig_offset_x,
+ &orig_offset_y,
+ &new_layer);
+ }
+ break;
+
+ case GIMP_TRANSFORM_TYPE_SELECTION:
+ case GIMP_TRANSFORM_TYPE_PATH:
+ case GIMP_TRANSFORM_TYPE_IMAGE:
+ break;
+ }
+
+ /* Send the request for the transformation to the tool...
+ */
+ new_buffer = GIMP_TRANSFORM_TOOL_GET_CLASS (tr_tool)->transform (
+ tr_tool,
+ active_object,
+ orig_buffer,
+ orig_offset_x,
+ orig_offset_y,
+ &buffer_profile,
+ &new_offset_x,
+ &new_offset_y);
+
+ if (orig_buffer)
+ g_object_unref (orig_buffer);
+
+ switch (options->type)
+ {
+ case GIMP_TRANSFORM_TYPE_LAYER:
+ if (new_buffer)
+ {
+ /* paste the new transformed image to the image...also implement
+ * undo...
+ */
+ gimp_drawable_transform_paste (GIMP_DRAWABLE (active_object),
+ new_buffer, buffer_profile,
+ new_offset_x, new_offset_y,
+ new_layer);
+ g_object_unref (new_buffer);
+ }
+ break;
+
+ case GIMP_TRANSFORM_TYPE_SELECTION:
+ case GIMP_TRANSFORM_TYPE_PATH:
+ case GIMP_TRANSFORM_TYPE_IMAGE:
+ /* Nothing to be done */
+ break;
+ }
+
+ gimp_image_undo_group_end (image);
+
+ /* We're done dirtying the image, and would like to be restarted if
+ * the image gets dirty while the tool exists
+ */
+ gimp_tool_control_pop_preserve (tool->control);
+
+ gimp_unset_busy (display->gimp);
+
+ gimp_image_flush (image);
+
+ return TRUE;
+}
+
+void
+gimp_transform_tool_set_type (GimpTransformTool *tr_tool,
+ GimpTransformType type)
+{
+ GimpTransformOptions *options;
+
+ g_return_if_fail (GIMP_IS_TRANSFORM_TOOL (tr_tool));
+
+ options = GIMP_TRANSFORM_TOOL_GET_OPTIONS (tr_tool);
+
+ if (! tr_tool->restore_type)
+ tr_tool->saved_type = options->type;
+
+ tr_tool->restore_type = FALSE;
+
+ g_object_set (options,
+ "type", type,
+ NULL);
+
+ tr_tool->restore_type = TRUE;
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-06-09 05:07:01 +0000