mirror of https://github.com/GNOME/gimp.git
237 lines
8.4 KiB
C
237 lines
8.4 KiB
C
/* GIMP - The GNU 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 3 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, see <http://www.gnu.org/licenses/>.
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*/
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#include "config.h"
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#include <gegl.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 "widgets/gimphelp-ids.h"
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#include "display/gimpdisplay.h"
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#include "display/gimptoolgui.h"
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#include "display/gimptooltransformgrid.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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/* index into trans_info array */
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enum
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{
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X0,
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Y0,
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X1,
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Y1,
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X2,
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Y2,
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X3,
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Y3
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};
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/* local function prototypes */
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static void gimp_perspective_tool_prepare (GimpTransformTool *tr_tool);
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static GimpToolWidget * gimp_perspective_tool_get_widget (GimpTransformTool *tr_tool);
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static void gimp_perspective_tool_recalc_matrix (GimpTransformTool *tr_tool,
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GimpToolWidget *widget);
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static gchar * gimp_perspective_tool_get_undo_desc (GimpTransformTool *tr_tool);
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static void gimp_perspective_tool_recalc_points (GimpGenericTransformTool *generic,
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GimpToolWidget *widget);
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static void gimp_perspective_tool_widget_changed (GimpToolWidget *widget,
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GimpTransformTool *tr_tool);
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G_DEFINE_TYPE (GimpPerspectiveTool, gimp_perspective_tool,
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GIMP_TYPE_GENERIC_TRANSFORM_TOOL)
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#define parent_class gimp_perspective_tool_parent_class
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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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GIMP_CONTEXT_PROP_MASK_BACKGROUND,
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"gimp-perspective-tool",
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_("Perspective"),
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_("Perspective Tool: "
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"Change perspective of the layer, selection or path"),
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N_("_Perspective"), "<shift>P",
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NULL, GIMP_HELP_TOOL_PERSPECTIVE,
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GIMP_ICON_TOOL_PERSPECTIVE,
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data);
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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 = GIMP_TRANSFORM_TOOL_CLASS (klass);
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GimpGenericTransformToolClass *generic_class = GIMP_GENERIC_TRANSFORM_TOOL_CLASS (klass);
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trans_class->prepare = gimp_perspective_tool_prepare;
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trans_class->get_widget = gimp_perspective_tool_get_widget;
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trans_class->recalc_matrix = gimp_perspective_tool_recalc_matrix;
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trans_class->get_undo_desc = gimp_perspective_tool_get_undo_desc;
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generic_class->recalc_points = gimp_perspective_tool_recalc_points;
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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_TOOL_CURSOR_PERSPECTIVE);
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tr_tool->progress_text = _("Perspective transformation");
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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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{
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GIMP_TRANSFORM_TOOL_CLASS (parent_class)->prepare (tr_tool);
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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 GimpToolWidget *
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gimp_perspective_tool_get_widget (GimpTransformTool *tr_tool)
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{
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GimpTool *tool = GIMP_TOOL (tr_tool);
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GimpDisplayShell *shell = gimp_display_get_shell (tool->display);
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GimpToolWidget *widget;
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widget = gimp_tool_transform_grid_new (shell,
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&tr_tool->transform,
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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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g_object_set (widget,
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"inside-function", GIMP_TRANSFORM_FUNCTION_PERSPECTIVE,
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"outside-function", GIMP_TRANSFORM_FUNCTION_PERSPECTIVE,
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"use-perspective-handles", TRUE,
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"use-center-handle", TRUE,
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NULL);
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g_signal_connect (widget, "changed",
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G_CALLBACK (gimp_perspective_tool_widget_changed),
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tr_tool);
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return widget;
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}
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static void
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gimp_perspective_tool_recalc_matrix (GimpTransformTool *tr_tool,
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GimpToolWidget *widget)
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{
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GIMP_TRANSFORM_TOOL_CLASS (parent_class)->recalc_matrix (tr_tool, widget);
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if (widget)
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g_object_set (widget,
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"transform", &tr_tool->transform,
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"x1", (gdouble) tr_tool->x1,
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"y1", (gdouble) tr_tool->y1,
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"x2", (gdouble) tr_tool->x2,
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"y2", (gdouble) tr_tool->y2,
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NULL);
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}
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static gchar *
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gimp_perspective_tool_get_undo_desc (GimpTransformTool *tr_tool)
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{
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return g_strdup (C_("undo-type", "Perspective"));
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}
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static void
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gimp_perspective_tool_recalc_points (GimpGenericTransformTool *generic,
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GimpToolWidget *widget)
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{
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GimpTransformTool *tr_tool = GIMP_TRANSFORM_TOOL (generic);
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generic->input_points[0] = (GimpVector2) {tr_tool->x1, tr_tool->y1};
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generic->input_points[1] = (GimpVector2) {tr_tool->x2, tr_tool->y1};
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generic->input_points[2] = (GimpVector2) {tr_tool->x1, tr_tool->y2};
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generic->input_points[3] = (GimpVector2) {tr_tool->x2, tr_tool->y2};
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generic->output_points[0] = (GimpVector2) {tr_tool->trans_info[X0],
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tr_tool->trans_info[Y0]};
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generic->output_points[1] = (GimpVector2) {tr_tool->trans_info[X1],
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tr_tool->trans_info[Y1]};
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generic->output_points[2] = (GimpVector2) {tr_tool->trans_info[X2],
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tr_tool->trans_info[Y2]};
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generic->output_points[3] = (GimpVector2) {tr_tool->trans_info[X3],
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tr_tool->trans_info[Y3]};
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}
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static void
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gimp_perspective_tool_widget_changed (GimpToolWidget *widget,
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GimpTransformTool *tr_tool)
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{
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GimpMatrix3 *transform;
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g_object_get (widget,
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"transform", &transform,
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NULL);
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gimp_matrix3_transform_point (transform,
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tr_tool->x1, tr_tool->y1,
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&tr_tool->trans_info[X0],
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&tr_tool->trans_info[Y0]);
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gimp_matrix3_transform_point (transform,
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tr_tool->x2, tr_tool->y1,
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&tr_tool->trans_info[X1],
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&tr_tool->trans_info[Y1]);
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gimp_matrix3_transform_point (transform,
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tr_tool->x1, tr_tool->y2,
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&tr_tool->trans_info[X2],
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&tr_tool->trans_info[Y2]);
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gimp_matrix3_transform_point (transform,
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tr_tool->x2, tr_tool->y2,
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&tr_tool->trans_info[X3],
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&tr_tool->trans_info[Y3]);
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g_free (transform);
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gimp_transform_tool_recalc_matrix (tr_tool, NULL);
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}
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