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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;
}
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