PIKApp/app/tools/pikagenerictransformtool.c

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2023-09-26 00:35:21 +02:00
/* PIKA - Photo and Image Kooker Application
* a rebranding of The GNU Image Manipulation Program (created with heckimp)
* A derived work which may be trivial. However, any changes may be (C)2023 by Aldercone Studio
*
* Original copyright, applying to most contents (license remains unchanged):
* 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 "libpikamath/pikamath.h"
#include "libpikawidgets/pikawidgets.h"
#include "tools-types.h"
#include "core/pika-transform-utils.h"
#include "widgets/pikahelp-ids.h"
#include "widgets/pikawidgets-utils.h"
#include "display/pikadisplay.h"
#include "display/pikatoolgui.h"
#include "pikagenerictransformtool.h"
#include "pikatoolcontrol.h"
#include "pikatransformgridoptions.h"
#include "pika-intl.h"
/* local function prototypes */
static gboolean pika_generic_transform_tool_info_to_matrix (PikaTransformGridTool *tg_tool,
PikaMatrix3 *transform);
static void pika_generic_transform_tool_dialog (PikaTransformGridTool *tg_tool);
static void pika_generic_transform_tool_dialog_update (PikaTransformGridTool *tg_tool);
static void pika_generic_transform_tool_prepare (PikaTransformGridTool *tg_tool);
G_DEFINE_TYPE (PikaGenericTransformTool, pika_generic_transform_tool,
PIKA_TYPE_TRANSFORM_GRID_TOOL)
#define parent_class pika_generic_transform_tool_parent_class
static void
pika_generic_transform_tool_class_init (PikaGenericTransformToolClass *klass)
{
PikaTransformGridToolClass *tg_class = PIKA_TRANSFORM_GRID_TOOL_CLASS (klass);
tg_class->info_to_matrix = pika_generic_transform_tool_info_to_matrix;
tg_class->dialog = pika_generic_transform_tool_dialog;
tg_class->dialog_update = pika_generic_transform_tool_dialog_update;
tg_class->prepare = pika_generic_transform_tool_prepare;
}
static void
pika_generic_transform_tool_init (PikaGenericTransformTool *unified_tool)
{
}
static gboolean
pika_generic_transform_tool_info_to_matrix (PikaTransformGridTool *tg_tool,
PikaMatrix3 *transform)
{
PikaGenericTransformTool *generic = PIKA_GENERIC_TRANSFORM_TOOL (tg_tool);
if (PIKA_GENERIC_TRANSFORM_TOOL_GET_CLASS (generic)->info_to_points)
PIKA_GENERIC_TRANSFORM_TOOL_GET_CLASS (generic)->info_to_points (generic);
pika_matrix3_identity (transform);
return pika_transform_matrix_generic (transform,
generic->input_points,
generic->output_points);
}
static void
pika_generic_transform_tool_dialog (PikaTransformGridTool *tg_tool)
{
PikaGenericTransformTool *generic = PIKA_GENERIC_TRANSFORM_TOOL (tg_tool);
GtkWidget *frame;
GtkWidget *vbox;
GtkWidget *label;
GtkSizeGroup *size_group;
frame = pika_frame_new (_("Transform Matrix"));
gtk_box_pack_start (GTK_BOX (pika_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);
label = generic->matrix_label = gtk_label_new (" ");
gtk_size_group_add_widget (size_group, label);
gtk_box_pack_start (GTK_BOX (vbox), label, TRUE, TRUE, 0);
pika_label_set_attributes (GTK_LABEL (label), PANGO_ATTR_SCALE, PANGO_SCALE_SMALL, -1);
gtk_label_set_selectable (GTK_LABEL (label), TRUE);
gtk_widget_show (label);
label = generic->invalid_label = gtk_label_new (_("Invalid transform"));
pika_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
pika_generic_transform_tool_dialog_update (PikaTransformGridTool *tg_tool)
{
PikaGenericTransformTool *generic = PIKA_GENERIC_TRANSFORM_TOOL (tg_tool);
PikaMatrix3 transform;
gboolean transform_valid;
transform_valid = pika_transform_grid_tool_info_to_matrix (tg_tool,
&transform);
if (transform_valid)
{
gchar buf[256];
gtk_widget_show (generic->matrix_label);
gtk_widget_hide (generic->invalid_label);
g_snprintf (buf, sizeof (buf), "<tt>% 11.4f\t% 11.4f\t% 11.4f\n% 11.4f\t% 11.4f"
"\t% 11.4f\n% 11.4f\t% 11.4f\t% 11.4f</tt>",
transform.coeff[0][0], transform.coeff[0][1], transform.coeff[0][2],
transform.coeff[1][0], transform.coeff[1][1], transform.coeff[1][2],
transform.coeff[2][0], transform.coeff[2][1], transform.coeff[2][2]);
gtk_label_set_markup (GTK_LABEL (generic->matrix_label), buf);
}
else
{
gtk_widget_show (generic->invalid_label);
gtk_widget_hide (generic->matrix_label);
}
}
static void
pika_generic_transform_tool_prepare (PikaTransformGridTool *tg_tool)
{
PikaTransformTool *tr_tool = PIKA_TRANSFORM_TOOL (tg_tool);
PikaGenericTransformTool *generic = PIKA_GENERIC_TRANSFORM_TOOL (tg_tool);
generic->input_points[0] = (PikaVector2) {tr_tool->x1, tr_tool->y1};
generic->input_points[1] = (PikaVector2) {tr_tool->x2, tr_tool->y1};
generic->input_points[2] = (PikaVector2) {tr_tool->x1, tr_tool->y2};
generic->input_points[3] = (PikaVector2) {tr_tool->x2, tr_tool->y2};
memcpy (generic->output_points, generic->input_points,
sizeof (generic->input_points));
}