mirror of https://github.com/GNOME/gimp.git
259 lines
8.1 KiB
C
259 lines
8.1 KiB
C
/* The GIMP -- an image manipulation program
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* Copyright (C) 1995 Spencer Kimball and Peter Mattis
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#include "config.h"
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#include <gtk/gtk.h>
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#include "libgimpmath/gimpmath.h"
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#include "libgimpwidgets/gimpwidgets.h"
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#include "tools-types.h"
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#include "core/gimp-transform-utils.h"
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#include "core/gimpimage.h"
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#include "core/gimpdrawable-transform.h"
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#include "core/gimptoolinfo.h"
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#include "widgets/gimphelp-ids.h"
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#include "display/gimpdisplay.h"
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#ifdef __GNUC__
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#warning FIXME #include "gui/gui-types.h"
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#endif
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#include "gui/gui-types.h"
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#include "gui/info-dialog.h"
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#include "gimpperspectivetool.h"
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#include "gimptoolcontrol.h"
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#include "gimptransformoptions.h"
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#include "gimp-intl.h"
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/* local function prototypes */
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static void gimp_perspective_tool_class_init (GimpPerspectiveToolClass *klass);
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static void gimp_perspective_tool_init (GimpPerspectiveTool *tool);
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static void gimp_perspective_tool_dialog (GimpTransformTool *tr_tool);
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static void gimp_perspective_tool_prepare (GimpTransformTool *tr_tool,
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GimpDisplay *gdisp);
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static void gimp_perspective_tool_motion (GimpTransformTool *tr_tool,
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GimpDisplay *gdisp);
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static void gimp_perspective_tool_recalc (GimpTransformTool *tr_tool,
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GimpDisplay *gdisp);
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static void perspective_info_update (GimpTransformTool *tr_tool);
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/* storage for information dialog fields */
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static gchar matrix_row_buf [3][MAX_INFO_BUF];
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static GimpTransformToolClass *parent_class = NULL;
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/* public functions */
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void
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gimp_perspective_tool_register (GimpToolRegisterCallback callback,
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gpointer data)
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{
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(* callback) (GIMP_TYPE_PERSPECTIVE_TOOL,
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GIMP_TYPE_TRANSFORM_OPTIONS,
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gimp_transform_options_gui,
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0,
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"gimp-perspective-tool",
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_("Perspective"),
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_("Change perspective of the layer or selection"),
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N_("_Perspective"), "<shift>P",
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NULL, GIMP_HELP_TOOL_PERSPECTIVE,
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GIMP_STOCK_TOOL_PERSPECTIVE,
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data);
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}
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GType
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gimp_perspective_tool_get_type (void)
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{
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static GType tool_type = 0;
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if (! tool_type)
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{
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static const GTypeInfo tool_info =
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{
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sizeof (GimpPerspectiveToolClass),
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(GBaseInitFunc) NULL,
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(GBaseFinalizeFunc) NULL,
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(GClassInitFunc) gimp_perspective_tool_class_init,
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NULL, /* class_finalize */
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NULL, /* class_data */
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sizeof (GimpPerspectiveTool),
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0, /* n_preallocs */
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(GInstanceInitFunc) gimp_perspective_tool_init,
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};
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tool_type = g_type_register_static (GIMP_TYPE_TRANSFORM_TOOL,
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"GimpPerspectiveTool",
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&tool_info, 0);
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}
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return tool_type;
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}
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static void
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gimp_perspective_tool_class_init (GimpPerspectiveToolClass *klass)
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{
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GimpTransformToolClass *trans_class;
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trans_class = GIMP_TRANSFORM_TOOL_CLASS (klass);
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parent_class = g_type_class_peek_parent (klass);
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trans_class->dialog = gimp_perspective_tool_dialog;
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trans_class->prepare = gimp_perspective_tool_prepare;
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trans_class->motion = gimp_perspective_tool_motion;
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trans_class->recalc = gimp_perspective_tool_recalc;
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}
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static void
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gimp_perspective_tool_init (GimpPerspectiveTool *perspective_tool)
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{
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GimpTool *tool = GIMP_TOOL (perspective_tool);
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GimpTransformTool *tr_tool = GIMP_TRANSFORM_TOOL (perspective_tool);
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gimp_tool_control_set_tool_cursor (tool->control,
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GIMP_PERSPECTIVE_TOOL_CURSOR);
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tr_tool->shell_desc = _("Perspective Transform Information");
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tr_tool->progress_text = _("Perspective...");
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}
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static void
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gimp_perspective_tool_dialog (GimpTransformTool *tr_tool)
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{
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info_dialog_add_label (tr_tool->info_dialog, _("Matrix:"),
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matrix_row_buf[0]);
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info_dialog_add_label (tr_tool->info_dialog, "",
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matrix_row_buf[1]);
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info_dialog_add_label (tr_tool->info_dialog, "",
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matrix_row_buf[2]);
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}
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static void
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gimp_perspective_tool_prepare (GimpTransformTool *tr_tool,
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GimpDisplay *gdisp)
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{
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tr_tool->trans_info[X0] = (gdouble) tr_tool->x1;
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tr_tool->trans_info[Y0] = (gdouble) tr_tool->y1;
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tr_tool->trans_info[X1] = (gdouble) tr_tool->x2;
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tr_tool->trans_info[Y1] = (gdouble) tr_tool->y1;
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tr_tool->trans_info[X2] = (gdouble) tr_tool->x1;
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tr_tool->trans_info[Y2] = (gdouble) tr_tool->y2;
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tr_tool->trans_info[X3] = (gdouble) tr_tool->x2;
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tr_tool->trans_info[Y3] = (gdouble) tr_tool->y2;
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}
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static void
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gimp_perspective_tool_motion (GimpTransformTool *transform_tool,
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GimpDisplay *gdisp)
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{
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gdouble diff_x, diff_y;
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diff_x = transform_tool->curx - transform_tool->lastx;
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diff_y = transform_tool->cury - transform_tool->lasty;
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switch (transform_tool->function)
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{
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case TRANSFORM_HANDLE_1:
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transform_tool->trans_info[X0] += diff_x;
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transform_tool->trans_info[Y0] += diff_y;
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break;
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case TRANSFORM_HANDLE_2:
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transform_tool->trans_info[X1] += diff_x;
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transform_tool->trans_info[Y1] += diff_y;
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break;
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case TRANSFORM_HANDLE_3:
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transform_tool->trans_info[X2] += diff_x;
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transform_tool->trans_info[Y2] += diff_y;
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break;
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case TRANSFORM_HANDLE_4:
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transform_tool->trans_info[X3] += diff_x;
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transform_tool->trans_info[Y3] += diff_y;
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break;
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case TRANSFORM_HANDLE_CENTER:
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transform_tool->trans_info[X0] += diff_x;
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transform_tool->trans_info[Y0] += diff_y;
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transform_tool->trans_info[X1] += diff_x;
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transform_tool->trans_info[Y1] += diff_y;
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transform_tool->trans_info[X2] += diff_x;
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transform_tool->trans_info[Y2] += diff_y;
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transform_tool->trans_info[X3] += diff_x;
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transform_tool->trans_info[Y3] += diff_y;
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break;
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default:
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break;
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}
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}
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static void
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gimp_perspective_tool_recalc (GimpTransformTool *tr_tool,
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GimpDisplay *gdisp)
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{
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gimp_transform_matrix_perspective (tr_tool->x1,
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tr_tool->y1,
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tr_tool->x2,
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tr_tool->y2,
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tr_tool->trans_info[X0],
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tr_tool->trans_info[Y0],
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tr_tool->trans_info[X1],
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tr_tool->trans_info[Y1],
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tr_tool->trans_info[X2],
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tr_tool->trans_info[Y2],
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tr_tool->trans_info[X3],
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tr_tool->trans_info[Y3],
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&tr_tool->transform);
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/* transform the bounding box */
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gimp_transform_tool_transform_bounding_box (tr_tool);
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/* update the information dialog */
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perspective_info_update (tr_tool);
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}
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static void
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perspective_info_update (GimpTransformTool *tr_tool)
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{
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gint i;
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for (i = 0; i < 3; i++)
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{
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gchar *p = matrix_row_buf[i];
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gint j;
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for (j = 0; j < 3; j++)
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{
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p += g_snprintf (p, MAX_INFO_BUF - (p - matrix_row_buf[i]),
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"%10.3g", tr_tool->transform.coeff[i][j]);
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}
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}
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info_dialog_update (tr_tool->info_dialog);
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info_dialog_show (tr_tool->info_dialog);
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}
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