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-rw-r--r--app/text/gimptextlayer-transform.c201
1 files changed, 201 insertions, 0 deletions
diff --git a/app/text/gimptextlayer-transform.c b/app/text/gimptextlayer-transform.c
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+++ b/app/text/gimptextlayer-transform.c
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+/* GIMP - The GNU Image Manipulation Program
+ * Copyright (C) 1995 Spencer Kimball and Peter Mattis
+ *
+ * GimpTextLayer
+ * Copyright (C) 2002-2003 Sven Neumann <sven@gimp.org>
+ *
+ * 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 <gdk-pixbuf/gdk-pixbuf.h>
+#include <gegl.h>
+
+#include "libgimpmath/gimpmath.h"
+
+#include "text-types.h"
+
+#include "core/gimp-transform-utils.h"
+#include "core/gimpimage-undo.h"
+
+#include "gimptext.h"
+#include "gimptextlayer.h"
+#include "gimptextlayer-transform.h"
+
+
+static GimpItemClass * gimp_text_layer_parent_class (void) G_GNUC_CONST;
+
+static gboolean gimp_text_layer_get_transformation (GimpTextLayer *layer,
+ GimpMatrix3 *matrix);
+static gboolean gimp_text_layer_set_transformation (GimpTextLayer *layer,
+ GimpMatrix3 *matrix);
+
+
+void
+gimp_text_layer_scale (GimpItem *item,
+ gint new_width,
+ gint new_height,
+ gint new_offset_x,
+ gint new_offset_y,
+ GimpInterpolationType interpolation_type,
+ GimpProgress *progress)
+{
+ /* TODO */
+}
+
+static gboolean
+gimp_text_layer_transform_flip (GimpTextLayer *layer,
+ GimpOrientationType flip_type,
+ gdouble axis)
+{
+ GimpMatrix3 matrix;
+
+ if (! gimp_text_layer_get_transformation (layer, &matrix))
+ return FALSE;
+
+ gimp_transform_matrix_flip (&matrix, flip_type, axis);
+
+ return gimp_text_layer_set_transformation (layer, &matrix);
+}
+
+void
+gimp_text_layer_flip (GimpItem *item,
+ GimpContext *context,
+ GimpOrientationType flip_type,
+ gdouble axis,
+ gboolean clip_result)
+{
+ GimpTextLayer *layer = GIMP_TEXT_LAYER (item);
+
+ if (gimp_text_layer_transform_flip (layer, flip_type, axis))
+ {
+ GimpLayerMask *mask = gimp_layer_get_mask (GIMP_LAYER (layer));
+
+ if (mask)
+ gimp_item_flip (GIMP_ITEM (mask), context,
+ flip_type, axis, clip_result);
+ }
+ else
+ {
+ gimp_text_layer_parent_class ()->flip (item, context,
+ flip_type, axis, clip_result);
+ }
+}
+
+static gboolean
+gimp_text_layer_transform_rotate (GimpTextLayer *layer,
+ GimpRotationType rotate_type,
+ gdouble center_x,
+ gdouble center_y)
+{
+ GimpMatrix3 matrix;
+
+ if (! gimp_text_layer_get_transformation (layer, &matrix))
+ return FALSE;
+
+ gimp_transform_matrix_rotate (&matrix, rotate_type, center_x, center_y);
+
+ return gimp_text_layer_set_transformation (layer, &matrix);
+}
+
+void
+gimp_text_layer_rotate (GimpItem *item,
+ GimpContext *context,
+ GimpRotationType rotate_type,
+ gdouble center_x,
+ gdouble center_y,
+ gboolean clip_result)
+{
+ GimpTextLayer *layer = GIMP_TEXT_LAYER (item);
+
+ if (! gimp_text_layer_transform_rotate (layer,
+ rotate_type, center_x, center_y))
+ {
+ GimpLayerMask *mask = gimp_layer_get_mask (GIMP_LAYER (layer));
+
+ if (mask)
+ gimp_item_rotate (GIMP_ITEM (mask), context,
+ rotate_type, center_x, center_y, clip_result);
+ }
+ else
+ {
+ gimp_text_layer_parent_class ()->rotate (item, context,
+ rotate_type, center_x, center_y,
+ clip_result);
+ }
+}
+
+void
+gimp_text_layer_transform (GimpItem *item,
+ GimpContext *context,
+ const GimpMatrix3 *matrix,
+ GimpTransformDirection direction,
+ GimpInterpolationType interpolation_type,
+ gboolean supersample,
+ GimpTransformResize clip_result,
+ GimpProgress *progress)
+{
+ /* TODO */
+}
+
+static GimpItemClass *
+gimp_text_layer_parent_class (void)
+{
+ static GimpItemClass *parent_class = NULL;
+
+ if (! parent_class)
+ {
+ gpointer klass = g_type_class_peek (GIMP_TYPE_TEXT_LAYER);
+
+ parent_class = g_type_class_peek_parent (klass);
+ }
+
+ return parent_class;
+}
+
+static gboolean
+gimp_text_layer_get_transformation (GimpTextLayer *layer,
+ GimpMatrix3 *matrix)
+{
+ if (! layer->text || layer->modified)
+ return FALSE;
+
+ gimp_text_get_transformation (layer->text, matrix);
+
+ return TRUE;
+}
+
+static gboolean
+gimp_text_layer_set_transformation (GimpTextLayer *layer,
+ GimpMatrix3 *matrix)
+{
+ GimpMatrix2 trafo;
+
+ if (! gimp_matrix3_is_affine (matrix))
+ return FALSE;
+
+ trafo.coeff[0][0] = matrix->coeff[0][0];
+ trafo.coeff[0][1] = matrix->coeff[0][1];
+ trafo.coeff[1][0] = matrix->coeff[1][0];
+ trafo.coeff[1][1] = matrix->coeff[1][1];
+
+ gimp_text_layer_set (GIMP_TEXT_LAYER (layer), NULL,
+ "transformation", &trafo,
+ "offset-x", matrix->coeff[0][2],
+ "offset-y", matrix->coeff[1][2],
+ NULL);
+
+ return TRUE;
+}