mirror of https://github.com/GNOME/gimp.git
256 lines
7.9 KiB
C
256 lines
7.9 KiB
C
/* 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 <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#include "config.h"
|
|
|
|
#include <string.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 "core/gimpimage.h"
|
|
#include "core/gimpdrawable-transform.h"
|
|
|
|
#include "widgets/gimphelp-ids.h"
|
|
|
|
#include "display/gimpdisplay.h"
|
|
#include "display/gimptoolgui.h"
|
|
|
|
#include "gimpperspectivetool.h"
|
|
#include "gimptoolcontrol.h"
|
|
#include "gimptransformoptions.h"
|
|
|
|
#include "gimp-intl.h"
|
|
|
|
|
|
/* index into trans_info array */
|
|
enum
|
|
{
|
|
X0,
|
|
Y0,
|
|
X1,
|
|
Y1,
|
|
X2,
|
|
Y2,
|
|
X3,
|
|
Y3
|
|
};
|
|
|
|
|
|
/* local function prototypes */
|
|
|
|
static void gimp_perspective_tool_dialog (GimpTransformTool *tr_tool);
|
|
static void gimp_perspective_tool_dialog_update (GimpTransformTool *tr_tool);
|
|
static void gimp_perspective_tool_prepare (GimpTransformTool *tr_tool);
|
|
static void gimp_perspective_tool_motion (GimpTransformTool *tr_tool);
|
|
static void gimp_perspective_tool_recalc_matrix (GimpTransformTool *tr_tool);
|
|
static gchar * gimp_perspective_tool_get_undo_desc (GimpTransformTool *tr_tool);
|
|
|
|
|
|
G_DEFINE_TYPE (GimpPerspectiveTool, gimp_perspective_tool,
|
|
GIMP_TYPE_TRANSFORM_TOOL)
|
|
|
|
|
|
void
|
|
gimp_perspective_tool_register (GimpToolRegisterCallback callback,
|
|
gpointer data)
|
|
{
|
|
(* callback) (GIMP_TYPE_PERSPECTIVE_TOOL,
|
|
GIMP_TYPE_TRANSFORM_OPTIONS,
|
|
gimp_transform_options_gui,
|
|
GIMP_CONTEXT_BACKGROUND_MASK,
|
|
"gimp-perspective-tool",
|
|
_("Perspective"),
|
|
_("Perspective Tool: "
|
|
"Change perspective of the layer, selection or path"),
|
|
N_("_Perspective"), "<shift>P",
|
|
NULL, GIMP_HELP_TOOL_PERSPECTIVE,
|
|
GIMP_STOCK_TOOL_PERSPECTIVE,
|
|
data);
|
|
}
|
|
|
|
static void
|
|
gimp_perspective_tool_class_init (GimpPerspectiveToolClass *klass)
|
|
{
|
|
GimpTransformToolClass *trans_class = GIMP_TRANSFORM_TOOL_CLASS (klass);
|
|
|
|
trans_class->dialog = gimp_perspective_tool_dialog;
|
|
trans_class->dialog_update = gimp_perspective_tool_dialog_update;
|
|
trans_class->prepare = gimp_perspective_tool_prepare;
|
|
trans_class->motion = gimp_perspective_tool_motion;
|
|
trans_class->recalc_matrix = gimp_perspective_tool_recalc_matrix;
|
|
trans_class->get_undo_desc = gimp_perspective_tool_get_undo_desc;
|
|
}
|
|
|
|
static void
|
|
gimp_perspective_tool_init (GimpPerspectiveTool *perspective_tool)
|
|
{
|
|
GimpTool *tool = GIMP_TOOL (perspective_tool);
|
|
GimpTransformTool *tr_tool = GIMP_TRANSFORM_TOOL (perspective_tool);
|
|
|
|
gimp_tool_control_set_tool_cursor (tool->control,
|
|
GIMP_TOOL_CURSOR_PERSPECTIVE);
|
|
|
|
tr_tool->progress_text = _("Perspective transformation");
|
|
|
|
tr_tool->use_grid = TRUE;
|
|
tr_tool->use_handles = TRUE;
|
|
tr_tool->use_center = TRUE;
|
|
}
|
|
|
|
static void
|
|
gimp_perspective_tool_dialog (GimpTransformTool *tr_tool)
|
|
{
|
|
GimpPerspectiveTool *perspective = GIMP_PERSPECTIVE_TOOL (tr_tool);
|
|
GtkWidget *frame;
|
|
GtkWidget *table;
|
|
gint x, y;
|
|
|
|
frame = gimp_frame_new (_("Transformation Matrix"));
|
|
gtk_box_pack_start (GTK_BOX (gimp_tool_gui_get_vbox (tr_tool->gui)), frame,
|
|
FALSE, FALSE, 0);
|
|
gtk_widget_show (frame);
|
|
|
|
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_container_add (GTK_CONTAINER (frame), table);
|
|
gtk_widget_show (table);
|
|
|
|
for (y = 0; y < 3; y++)
|
|
for (x = 0; x < 3; x++)
|
|
{
|
|
GtkWidget *label = gtk_label_new (" ");
|
|
|
|
gtk_misc_set_alignment (GTK_MISC (label), 1.0, 0.0);
|
|
gtk_label_set_width_chars (GTK_LABEL (label), 12);
|
|
gtk_table_attach (GTK_TABLE (table), label,
|
|
x, x + 1, y, y + 1, GTK_EXPAND, GTK_FILL, 0, 0);
|
|
gtk_widget_show (label);
|
|
|
|
perspective->label[y][x] = label;
|
|
}
|
|
}
|
|
|
|
static void
|
|
gimp_perspective_tool_dialog_update (GimpTransformTool *tr_tool)
|
|
{
|
|
GimpPerspectiveTool *perspective = GIMP_PERSPECTIVE_TOOL (tr_tool);
|
|
gint x, y;
|
|
|
|
for (y = 0; y < 3; y++)
|
|
for (x = 0; x < 3; x++)
|
|
{
|
|
gchar buf[32];
|
|
|
|
g_snprintf (buf, sizeof (buf),
|
|
"%10.5f", tr_tool->transform.coeff[y][x]);
|
|
|
|
gtk_label_set_text (GTK_LABEL (perspective->label[y][x]), buf);
|
|
}
|
|
}
|
|
|
|
static void
|
|
gimp_perspective_tool_prepare (GimpTransformTool *tr_tool)
|
|
{
|
|
tr_tool->trans_info[X0] = (gdouble) tr_tool->x1;
|
|
tr_tool->trans_info[Y0] = (gdouble) tr_tool->y1;
|
|
tr_tool->trans_info[X1] = (gdouble) tr_tool->x2;
|
|
tr_tool->trans_info[Y1] = (gdouble) tr_tool->y1;
|
|
tr_tool->trans_info[X2] = (gdouble) tr_tool->x1;
|
|
tr_tool->trans_info[Y2] = (gdouble) tr_tool->y2;
|
|
tr_tool->trans_info[X3] = (gdouble) tr_tool->x2;
|
|
tr_tool->trans_info[Y3] = (gdouble) tr_tool->y2;
|
|
}
|
|
|
|
static void
|
|
gimp_perspective_tool_motion (GimpTransformTool *transform_tool)
|
|
{
|
|
gdouble diff_x, diff_y;
|
|
|
|
diff_x = transform_tool->curx - transform_tool->lastx;
|
|
diff_y = transform_tool->cury - transform_tool->lasty;
|
|
|
|
switch (transform_tool->function)
|
|
{
|
|
case TRANSFORM_HANDLE_NW:
|
|
transform_tool->trans_info[X0] += diff_x;
|
|
transform_tool->trans_info[Y0] += diff_y;
|
|
break;
|
|
|
|
case TRANSFORM_HANDLE_NE:
|
|
transform_tool->trans_info[X1] += diff_x;
|
|
transform_tool->trans_info[Y1] += diff_y;
|
|
break;
|
|
|
|
case TRANSFORM_HANDLE_SW:
|
|
transform_tool->trans_info[X2] += diff_x;
|
|
transform_tool->trans_info[Y2] += diff_y;
|
|
break;
|
|
|
|
case TRANSFORM_HANDLE_SE:
|
|
transform_tool->trans_info[X3] += diff_x;
|
|
transform_tool->trans_info[Y3] += diff_y;
|
|
break;
|
|
|
|
case TRANSFORM_HANDLE_CENTER:
|
|
transform_tool->trans_info[X0] += diff_x;
|
|
transform_tool->trans_info[Y0] += diff_y;
|
|
transform_tool->trans_info[X1] += diff_x;
|
|
transform_tool->trans_info[Y1] += diff_y;
|
|
transform_tool->trans_info[X2] += diff_x;
|
|
transform_tool->trans_info[Y2] += diff_y;
|
|
transform_tool->trans_info[X3] += diff_x;
|
|
transform_tool->trans_info[Y3] += diff_y;
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void
|
|
gimp_perspective_tool_recalc_matrix (GimpTransformTool *tr_tool)
|
|
{
|
|
gimp_matrix3_identity (&tr_tool->transform);
|
|
gimp_transform_matrix_perspective (&tr_tool->transform,
|
|
tr_tool->x1,
|
|
tr_tool->y1,
|
|
tr_tool->x2 - tr_tool->x1,
|
|
tr_tool->y2 - tr_tool->y1,
|
|
tr_tool->trans_info[X0],
|
|
tr_tool->trans_info[Y0],
|
|
tr_tool->trans_info[X1],
|
|
tr_tool->trans_info[Y1],
|
|
tr_tool->trans_info[X2],
|
|
tr_tool->trans_info[Y2],
|
|
tr_tool->trans_info[X3],
|
|
tr_tool->trans_info[Y3]);
|
|
}
|
|
|
|
static gchar *
|
|
gimp_perspective_tool_get_undo_desc (GimpTransformTool *tr_tool)
|
|
{
|
|
return g_strdup (C_("undo-type", "Perspective"));
|
|
}
|