389 lines
15 KiB
C
389 lines
15 KiB
C
/* PIKA - Photo and Image Kooker Application
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* a rebranding of The GNU Image Manipulation Program (created with heckimp)
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* A derived work which may be trivial. However, any changes may be (C)2023 by Aldercone Studio
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*
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* Original copyright, applying to most contents (license remains unchanged):
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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 <https://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 "libpikamath/pikamath.h"
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#include "libpikawidgets/pikawidgets.h"
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#include "tools-types.h"
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#include "widgets/pikahelp-ids.h"
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#include "widgets/pikawidgets-utils.h"
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#include "display/pikadisplay.h"
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#include "display/pikatoolhandlegrid.h"
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#include "display/pikatoolgui.h"
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#include "pikahandletransformoptions.h"
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#include "pikahandletransformtool.h"
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#include "pikatoolcontrol.h"
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#include "pika-intl.h"
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/* the transformation is defined by 8 points:
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*
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* 4 points on the original image and 4 corresponding points on the
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* transformed image. The first N_HANDLES points on the transformed
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* image are visible as handles.
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*
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* For these handles, the constants TRANSFORM_HANDLE_N,
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* TRANSFORM_HANDLE_S, TRANSFORM_HANDLE_E and TRANSFORM_HANDLE_W are
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* used. Actually, it makes no sense to name the handles with north,
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* south, east, and west. But this way, we don't need to define even
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* more enum constants.
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*/
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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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OX0,
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OY0,
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OX1,
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OY1,
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OX2,
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OY2,
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OX3,
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OY3,
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N_HANDLES
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};
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/* local function prototypes */
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static void pika_handle_transform_tool_modifier_key (PikaTool *tool,
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GdkModifierType key,
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gboolean press,
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GdkModifierType state,
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PikaDisplay *display);
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static void pika_handle_transform_tool_matrix_to_info (PikaTransformGridTool *tg_tool,
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const PikaMatrix3 *transform);
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static void pika_handle_transform_tool_prepare (PikaTransformGridTool *tg_tool);
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static PikaToolWidget * pika_handle_transform_tool_get_widget (PikaTransformGridTool *tg_tool);
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static void pika_handle_transform_tool_update_widget (PikaTransformGridTool *tg_tool);
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static void pika_handle_transform_tool_widget_changed (PikaTransformGridTool *tg_tool);
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static void pika_handle_transform_tool_info_to_points (PikaGenericTransformTool *generic);
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G_DEFINE_TYPE (PikaHandleTransformTool, pika_handle_transform_tool,
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PIKA_TYPE_GENERIC_TRANSFORM_TOOL)
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#define parent_class pika_handle_transform_tool_parent_class
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void
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pika_handle_transform_tool_register (PikaToolRegisterCallback callback,
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gpointer data)
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{
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(* callback) (PIKA_TYPE_HANDLE_TRANSFORM_TOOL,
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PIKA_TYPE_HANDLE_TRANSFORM_OPTIONS,
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pika_handle_transform_options_gui,
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PIKA_CONTEXT_PROP_MASK_BACKGROUND,
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"pika-handle-transform-tool",
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_("Handle Transform"),
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_("Handle Transform Tool: "
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"Deform the layer, selection or path with handles"),
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N_("_Handle Transform"), "<shift>L",
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NULL, PIKA_HELP_TOOL_HANDLE_TRANSFORM,
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PIKA_ICON_TOOL_HANDLE_TRANSFORM,
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data);
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}
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static void
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pika_handle_transform_tool_class_init (PikaHandleTransformToolClass *klass)
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{
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PikaToolClass *tool_class = PIKA_TOOL_CLASS (klass);
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PikaTransformToolClass *tr_class = PIKA_TRANSFORM_TOOL_CLASS (klass);
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PikaTransformGridToolClass *tg_class = PIKA_TRANSFORM_GRID_TOOL_CLASS (klass);
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PikaGenericTransformToolClass *generic_class = PIKA_GENERIC_TRANSFORM_TOOL_CLASS (klass);
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tool_class->modifier_key = pika_handle_transform_tool_modifier_key;
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tg_class->matrix_to_info = pika_handle_transform_tool_matrix_to_info;
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tg_class->prepare = pika_handle_transform_tool_prepare;
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tg_class->get_widget = pika_handle_transform_tool_get_widget;
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tg_class->update_widget = pika_handle_transform_tool_update_widget;
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tg_class->widget_changed = pika_handle_transform_tool_widget_changed;
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generic_class->info_to_points = pika_handle_transform_tool_info_to_points;
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tr_class->undo_desc = C_("undo-type", "Handle transform");
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tr_class->progress_text = _("Handle transformation");
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}
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static void
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pika_handle_transform_tool_init (PikaHandleTransformTool *ht_tool)
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{
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ht_tool->saved_handle_mode = PIKA_HANDLE_MODE_ADD_TRANSFORM;
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}
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static void
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pika_handle_transform_tool_modifier_key (PikaTool *tool,
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GdkModifierType key,
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gboolean press,
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GdkModifierType state,
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PikaDisplay *display)
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{
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PikaHandleTransformTool *ht_tool = PIKA_HANDLE_TRANSFORM_TOOL (tool);
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PikaHandleTransformOptions *options;
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GdkModifierType shift = pika_get_extend_selection_mask ();
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GdkModifierType ctrl = pika_get_constrain_behavior_mask ();
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PikaTransformHandleMode handle_mode;
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options = PIKA_HANDLE_TRANSFORM_TOOL_GET_OPTIONS (tool);
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handle_mode = options->handle_mode;
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if (press)
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{
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if (key == (state & (shift | ctrl)))
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{
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/* first modifier pressed */
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ht_tool->saved_handle_mode = options->handle_mode;
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}
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}
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else
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{
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if (! (state & (shift | ctrl)))
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{
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/* last modifier released */
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handle_mode = ht_tool->saved_handle_mode;
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}
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}
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if (state & shift)
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{
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handle_mode = PIKA_HANDLE_MODE_MOVE;
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}
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else if (state & ctrl)
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{
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handle_mode = PIKA_HANDLE_MODE_REMOVE;
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}
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if (handle_mode != options->handle_mode)
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{
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g_object_set (options,
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"handle-mode", handle_mode,
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NULL);
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}
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PIKA_TOOL_CLASS (parent_class)->modifier_key (tool, key, press,
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state, display);
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}
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static void
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pika_handle_transform_tool_matrix_to_info (PikaTransformGridTool *tg_tool,
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const PikaMatrix3 *transform)
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{
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pika_matrix3_transform_point (transform,
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tg_tool->trans_info[OX0],
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tg_tool->trans_info[OY0],
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&tg_tool->trans_info[X0],
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&tg_tool->trans_info[Y0]);
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pika_matrix3_transform_point (transform,
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tg_tool->trans_info[OX1],
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tg_tool->trans_info[OY1],
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&tg_tool->trans_info[X1],
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&tg_tool->trans_info[Y1]);
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pika_matrix3_transform_point (transform,
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tg_tool->trans_info[OX2],
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tg_tool->trans_info[OY2],
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&tg_tool->trans_info[X2],
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&tg_tool->trans_info[Y2]);
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pika_matrix3_transform_point (transform,
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tg_tool->trans_info[OX3],
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tg_tool->trans_info[OY3],
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&tg_tool->trans_info[X3],
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&tg_tool->trans_info[Y3]);
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}
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static void
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pika_handle_transform_tool_prepare (PikaTransformGridTool *tg_tool)
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{
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PikaTransformTool *tr_tool = PIKA_TRANSFORM_TOOL (tg_tool);
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PIKA_TRANSFORM_GRID_TOOL_CLASS (parent_class)->prepare (tg_tool);
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tg_tool->trans_info[X0] = (gdouble) tr_tool->x1;
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tg_tool->trans_info[Y0] = (gdouble) tr_tool->y1;
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tg_tool->trans_info[X1] = (gdouble) tr_tool->x2;
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tg_tool->trans_info[Y1] = (gdouble) tr_tool->y1;
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tg_tool->trans_info[X2] = (gdouble) tr_tool->x1;
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tg_tool->trans_info[Y2] = (gdouble) tr_tool->y2;
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tg_tool->trans_info[X3] = (gdouble) tr_tool->x2;
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tg_tool->trans_info[Y3] = (gdouble) tr_tool->y2;
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tg_tool->trans_info[OX0] = (gdouble) tr_tool->x1;
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tg_tool->trans_info[OY0] = (gdouble) tr_tool->y1;
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tg_tool->trans_info[OX1] = (gdouble) tr_tool->x2;
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tg_tool->trans_info[OY1] = (gdouble) tr_tool->y1;
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tg_tool->trans_info[OX2] = (gdouble) tr_tool->x1;
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tg_tool->trans_info[OY2] = (gdouble) tr_tool->y2;
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tg_tool->trans_info[OX3] = (gdouble) tr_tool->x2;
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tg_tool->trans_info[OY3] = (gdouble) tr_tool->y2;
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tg_tool->trans_info[N_HANDLES] = 0;
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}
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static PikaToolWidget *
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pika_handle_transform_tool_get_widget (PikaTransformGridTool *tg_tool)
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{
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PikaTool *tool = PIKA_TOOL (tg_tool);
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PikaTransformTool *tr_tool = PIKA_TRANSFORM_TOOL (tg_tool);
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PikaHandleTransformOptions *options;
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PikaDisplayShell *shell = pika_display_get_shell (tool->display);
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PikaToolWidget *widget;
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options = PIKA_HANDLE_TRANSFORM_TOOL_GET_OPTIONS (tg_tool);
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widget = pika_tool_handle_grid_new (shell,
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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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"n-handles", (gint) tg_tool->trans_info[N_HANDLES],
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"orig-x1", tg_tool->trans_info[OX0],
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"orig-y1", tg_tool->trans_info[OY0],
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"orig-x2", tg_tool->trans_info[OX1],
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"orig-y2", tg_tool->trans_info[OY1],
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"orig-x3", tg_tool->trans_info[OX2],
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"orig-y3", tg_tool->trans_info[OY2],
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"orig-x4", tg_tool->trans_info[OX3],
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"orig-y4", tg_tool->trans_info[OY3],
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"trans-x1", tg_tool->trans_info[X0],
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"trans-y1", tg_tool->trans_info[Y0],
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"trans-x2", tg_tool->trans_info[X1],
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"trans-y2", tg_tool->trans_info[Y1],
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"trans-x3", tg_tool->trans_info[X2],
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"trans-y3", tg_tool->trans_info[Y2],
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"trans-x4", tg_tool->trans_info[X3],
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"trans-y4", tg_tool->trans_info[Y3],
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NULL);
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g_object_bind_property (G_OBJECT (options), "handle-mode",
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G_OBJECT (widget), "handle-mode",
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G_BINDING_SYNC_CREATE |
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G_BINDING_BIDIRECTIONAL);
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return widget;
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}
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static void
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pika_handle_transform_tool_update_widget (PikaTransformGridTool *tg_tool)
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{
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PikaMatrix3 transform;
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gboolean transform_valid;
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PIKA_TRANSFORM_GRID_TOOL_CLASS (parent_class)->update_widget (tg_tool);
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transform_valid = pika_transform_grid_tool_info_to_matrix (tg_tool,
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&transform);
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g_object_set (tg_tool->widget,
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"show-guides", transform_valid,
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"n-handles", (gint) tg_tool->trans_info[N_HANDLES],
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"orig-x1", tg_tool->trans_info[OX0],
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"orig-y1", tg_tool->trans_info[OY0],
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"orig-x2", tg_tool->trans_info[OX1],
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"orig-y2", tg_tool->trans_info[OY1],
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"orig-x3", tg_tool->trans_info[OX2],
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"orig-y3", tg_tool->trans_info[OY2],
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"orig-x4", tg_tool->trans_info[OX3],
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"orig-y4", tg_tool->trans_info[OY3],
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"trans-x1", tg_tool->trans_info[X0],
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"trans-y1", tg_tool->trans_info[Y0],
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"trans-x2", tg_tool->trans_info[X1],
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"trans-y2", tg_tool->trans_info[Y1],
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"trans-x3", tg_tool->trans_info[X2],
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"trans-y3", tg_tool->trans_info[Y2],
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"trans-x4", tg_tool->trans_info[X3],
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"trans-y4", tg_tool->trans_info[Y3],
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NULL);
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}
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static void
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pika_handle_transform_tool_widget_changed (PikaTransformGridTool *tg_tool)
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{
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gint n_handles;
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g_object_get (tg_tool->widget,
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"n-handles", &n_handles,
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"orig-x1", &tg_tool->trans_info[OX0],
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"orig-y1", &tg_tool->trans_info[OY0],
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"orig-x2", &tg_tool->trans_info[OX1],
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"orig-y2", &tg_tool->trans_info[OY1],
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"orig-x3", &tg_tool->trans_info[OX2],
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"orig-y3", &tg_tool->trans_info[OY2],
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"orig-x4", &tg_tool->trans_info[OX3],
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"orig-y4", &tg_tool->trans_info[OY3],
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"trans-x1", &tg_tool->trans_info[X0],
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"trans-y1", &tg_tool->trans_info[Y0],
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"trans-x2", &tg_tool->trans_info[X1],
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"trans-y2", &tg_tool->trans_info[Y1],
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"trans-x3", &tg_tool->trans_info[X2],
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"trans-y3", &tg_tool->trans_info[Y2],
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"trans-x4", &tg_tool->trans_info[X3],
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"trans-y4", &tg_tool->trans_info[Y3],
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NULL);
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tg_tool->trans_info[N_HANDLES] = n_handles;
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PIKA_TRANSFORM_GRID_TOOL_CLASS (parent_class)->widget_changed (tg_tool);
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}
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static void
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pika_handle_transform_tool_info_to_points (PikaGenericTransformTool *generic)
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{
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PikaTransformGridTool *tg_tool = PIKA_TRANSFORM_GRID_TOOL (generic);
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generic->input_points[0] = (PikaVector2) {tg_tool->trans_info[OX0],
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tg_tool->trans_info[OY0]};
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generic->input_points[1] = (PikaVector2) {tg_tool->trans_info[OX1],
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tg_tool->trans_info[OY1]};
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generic->input_points[2] = (PikaVector2) {tg_tool->trans_info[OX2],
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tg_tool->trans_info[OY2]};
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generic->input_points[3] = (PikaVector2) {tg_tool->trans_info[OX3],
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tg_tool->trans_info[OY3]};
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generic->output_points[0] = (PikaVector2) {tg_tool->trans_info[X0],
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tg_tool->trans_info[Y0]};
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generic->output_points[1] = (PikaVector2) {tg_tool->trans_info[X1],
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tg_tool->trans_info[Y1]};
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generic->output_points[2] = (PikaVector2) {tg_tool->trans_info[X2],
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tg_tool->trans_info[Y2]};
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generic->output_points[3] = (PikaVector2) {tg_tool->trans_info[X3],
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tg_tool->trans_info[Y3]};
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}
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