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/* 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 "libgimpmath/gimpmath.h"
#include "libgimpwidgets/gimpwidgets.h"
#include "tools-types.h"
#include "core/gimp-transform-utils.h"
#include "widgets/gimphelp-ids.h"
#include "widgets/gimpwidgets-utils.h"
#include "display/gimpdisplay.h"
#include "display/gimptoolgui.h"
#include "gimpgenerictransformtool.h"
#include "gimptoolcontrol.h"
#include "gimptransformgridoptions.h"
#include "gimp-intl.h"
/* local function prototypes */
static gboolean gimp_generic_transform_tool_info_to_matrix (GimpTransformGridTool *tg_tool,
GimpMatrix3 *transform);
static void gimp_generic_transform_tool_dialog (GimpTransformGridTool *tg_tool);
static void gimp_generic_transform_tool_dialog_update (GimpTransformGridTool *tg_tool);
static void gimp_generic_transform_tool_prepare (GimpTransformGridTool *tg_tool);
G_DEFINE_TYPE (GimpGenericTransformTool, gimp_generic_transform_tool,
GIMP_TYPE_TRANSFORM_GRID_TOOL)
#define parent_class gimp_generic_transform_tool_parent_class
static void
gimp_generic_transform_tool_class_init (GimpGenericTransformToolClass *klass)
{
GimpTransformGridToolClass *tg_class = GIMP_TRANSFORM_GRID_TOOL_CLASS (klass);
tg_class->info_to_matrix = gimp_generic_transform_tool_info_to_matrix;
tg_class->dialog = gimp_generic_transform_tool_dialog;
tg_class->dialog_update = gimp_generic_transform_tool_dialog_update;
tg_class->prepare = gimp_generic_transform_tool_prepare;
}
static void
gimp_generic_transform_tool_init (GimpGenericTransformTool *unified_tool)
{
}
static gboolean
gimp_generic_transform_tool_info_to_matrix (GimpTransformGridTool *tg_tool,
GimpMatrix3 *transform)
{
GimpGenericTransformTool *generic = GIMP_GENERIC_TRANSFORM_TOOL (tg_tool);
if (GIMP_GENERIC_TRANSFORM_TOOL_GET_CLASS (generic)->info_to_points)
GIMP_GENERIC_TRANSFORM_TOOL_GET_CLASS (generic)->info_to_points (generic);
gimp_matrix3_identity (transform);
return gimp_transform_matrix_generic (transform,
generic->input_points,
generic->output_points);
}
static void
gimp_generic_transform_tool_dialog (GimpTransformGridTool *tg_tool)
{
GimpGenericTransformTool *generic = GIMP_GENERIC_TRANSFORM_TOOL (tg_tool);
GtkWidget *frame;
GtkWidget *vbox;
GtkWidget *table;
GtkWidget *label;
GtkSizeGroup *size_group;
gint x, y;
frame = gimp_frame_new (_("Transform Matrix"));
gtk_box_pack_start (GTK_BOX (gimp_tool_gui_get_vbox (tg_tool->gui)), frame,
FALSE, FALSE, 0);
gtk_widget_show (frame);
vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 0);
gtk_container_add (GTK_CONTAINER (frame), vbox);
gtk_widget_show (vbox);
size_group = gtk_size_group_new (GTK_SIZE_GROUP_BOTH);
table = generic->matrix_table = gtk_table_new (3, 3, FALSE);
gtk_table_set_row_spacings (GTK_TABLE (table), 2);
gtk_table_set_col_spacings (GTK_TABLE (table), 2);
gtk_box_pack_start (GTK_BOX (vbox), table, TRUE, TRUE, 0);
gtk_size_group_add_widget (size_group, table);
gtk_widget_show (table);
for (y = 0; y < 3; y++)
{
for (x = 0; x < 3; x++)
{
label = generic->matrix_labels[y][x] = gtk_label_new (" ");
gtk_label_set_xalign (GTK_LABEL (label), 1.0);
gtk_label_set_width_chars (GTK_LABEL (label), 8);
gimp_label_set_attributes (GTK_LABEL (label),
PANGO_ATTR_SCALE, PANGO_SCALE_SMALL,
-1);
gtk_table_attach (GTK_TABLE (table), label,
x, x + 1, y, y + 1, GTK_EXPAND, GTK_FILL, 0, 0);
gtk_widget_show (label);
}
}
label = generic->invalid_label = gtk_label_new (_("Invalid transform"));
gimp_label_set_attributes (GTK_LABEL (label),
PANGO_ATTR_STYLE, PANGO_STYLE_ITALIC,
-1);
gtk_size_group_add_widget (size_group, label);
gtk_box_pack_start (GTK_BOX (vbox), label, TRUE, TRUE, 0);
g_object_unref (size_group);
}
static void
gimp_generic_transform_tool_dialog_update (GimpTransformGridTool *tg_tool)
{
GimpGenericTransformTool *generic = GIMP_GENERIC_TRANSFORM_TOOL (tg_tool);
GimpMatrix3 transform;
gboolean transform_valid;
transform_valid = gimp_transform_grid_tool_info_to_matrix (tg_tool,
&transform);
if (transform_valid)
{
gint x, y;
gtk_widget_show (generic->matrix_table);
gtk_widget_hide (generic->invalid_label);
for (y = 0; y < 3; y++)
{
for (x = 0; x < 3; x++)
{
gchar buf[32];
g_snprintf (buf, sizeof (buf), "%.4f", transform.coeff[y][x]);
gtk_label_set_text (GTK_LABEL (generic->matrix_labels[y][x]), buf);
}
}
}
else
{
gtk_widget_show (generic->invalid_label);
gtk_widget_hide (generic->matrix_table);
}
}
static void
gimp_generic_transform_tool_prepare (GimpTransformGridTool *tg_tool)
{
GimpTransformTool *tr_tool = GIMP_TRANSFORM_TOOL (tg_tool);
GimpGenericTransformTool *generic = GIMP_GENERIC_TRANSFORM_TOOL (tg_tool);
generic->input_points[0] = (GimpVector2) {tr_tool->x1, tr_tool->y1};
generic->input_points[1] = (GimpVector2) {tr_tool->x2, tr_tool->y1};
generic->input_points[2] = (GimpVector2) {tr_tool->x1, tr_tool->y2};
generic->input_points[3] = (GimpVector2) {tr_tool->x2, tr_tool->y2};
memcpy (generic->output_points, generic->input_points,
sizeof (generic->input_points));
}
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