542 lines
20 KiB
C
542 lines
20 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 <gdk/gdkkeysyms.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 "core/pika-transform-utils.h"
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#include "core/pikaimage.h"
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#include "widgets/pikahelp-ids.h"
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#include "widgets/pikapivotselector.h"
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#include "display/pikadisplay.h"
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#include "display/pikadisplayshell.h"
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#include "display/pikadisplayshell-transform.h"
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#include "display/pikatoolgui.h"
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#include "display/pikatoolrotategrid.h"
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#include "pikarotatetool.h"
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#include "pikatoolcontrol.h"
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#include "pikatransformgridoptions.h"
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#include "pika-intl.h"
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/* index into trans_info array */
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enum
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{
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ANGLE,
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PIVOT_X,
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PIVOT_Y
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};
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#define SB_WIDTH 8
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#define EPSILON 1e-6
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/* local function prototypes */
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static gboolean pika_rotate_tool_key_press (PikaTool *tool,
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GdkEventKey *kevent,
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PikaDisplay *display);
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static gboolean pika_rotate_tool_info_to_matrix (PikaTransformGridTool *tg_tool,
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PikaMatrix3 *transform);
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static void pika_rotate_tool_matrix_to_info (PikaTransformGridTool *tg_tool,
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const PikaMatrix3 *transform);
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static gchar * pika_rotate_tool_get_undo_desc (PikaTransformGridTool *tg_tool);
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static void pika_rotate_tool_dialog (PikaTransformGridTool *tg_tool);
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static void pika_rotate_tool_dialog_update (PikaTransformGridTool *tg_tool);
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static void pika_rotate_tool_prepare (PikaTransformGridTool *tg_tool);
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static void pika_rotate_tool_readjust (PikaTransformGridTool *tg_tool);
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static PikaToolWidget * pika_rotate_tool_get_widget (PikaTransformGridTool *tg_tool);
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static void pika_rotate_tool_update_widget (PikaTransformGridTool *tg_tool);
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static void pika_rotate_tool_widget_changed (PikaTransformGridTool *tg_tool);
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static void rotate_angle_changed (GtkAdjustment *adj,
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PikaTransformGridTool *tg_tool);
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static void rotate_center_changed (GtkWidget *entry,
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PikaTransformGridTool *tg_tool);
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static void rotate_pivot_changed (PikaPivotSelector *selector,
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PikaTransformGridTool *tg_tool);
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G_DEFINE_TYPE (PikaRotateTool, pika_rotate_tool, PIKA_TYPE_TRANSFORM_GRID_TOOL)
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#define parent_class pika_rotate_tool_parent_class
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void
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pika_rotate_tool_register (PikaToolRegisterCallback callback,
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gpointer data)
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{
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(* callback) (PIKA_TYPE_ROTATE_TOOL,
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PIKA_TYPE_TRANSFORM_GRID_OPTIONS,
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pika_transform_grid_options_gui,
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PIKA_CONTEXT_PROP_MASK_BACKGROUND,
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"pika-rotate-tool",
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_("Rotate"),
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_("Rotate Tool: Rotate the layer, selection or path"),
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N_("_Rotate"), "<shift>R",
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NULL, PIKA_HELP_TOOL_ROTATE,
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PIKA_ICON_TOOL_ROTATE,
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data);
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}
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static void
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pika_rotate_tool_class_init (PikaRotateToolClass *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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tool_class->key_press = pika_rotate_tool_key_press;
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tg_class->info_to_matrix = pika_rotate_tool_info_to_matrix;
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tg_class->matrix_to_info = pika_rotate_tool_matrix_to_info;
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tg_class->get_undo_desc = pika_rotate_tool_get_undo_desc;
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tg_class->dialog = pika_rotate_tool_dialog;
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tg_class->dialog_update = pika_rotate_tool_dialog_update;
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tg_class->prepare = pika_rotate_tool_prepare;
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tg_class->readjust = pika_rotate_tool_readjust;
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tg_class->get_widget = pika_rotate_tool_get_widget;
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tg_class->update_widget = pika_rotate_tool_update_widget;
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tg_class->widget_changed = pika_rotate_tool_widget_changed;
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tr_class->undo_desc = C_("undo-type", "Rotate");
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tr_class->progress_text = _("Rotating");
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tg_class->ok_button_label = _("R_otate");
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}
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static void
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pika_rotate_tool_init (PikaRotateTool *rotate_tool)
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{
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PikaTool *tool = PIKA_TOOL (rotate_tool);
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pika_tool_control_set_tool_cursor (tool->control, PIKA_TOOL_CURSOR_ROTATE);
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}
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static gboolean
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pika_rotate_tool_key_press (PikaTool *tool,
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GdkEventKey *kevent,
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PikaDisplay *display)
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{
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PikaDrawTool *draw_tool = PIKA_DRAW_TOOL (tool);
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if (display == draw_tool->display)
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{
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PikaRotateTool *rotate = PIKA_ROTATE_TOOL (tool);
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GtkSpinButton *angle_spin = GTK_SPIN_BUTTON (rotate->angle_spin_button);
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switch (kevent->keyval)
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{
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case GDK_KEY_Up:
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gtk_spin_button_spin (angle_spin, GTK_SPIN_STEP_FORWARD, 0.0);
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return TRUE;
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case GDK_KEY_Down:
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gtk_spin_button_spin (angle_spin, GTK_SPIN_STEP_BACKWARD, 0.0);
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return TRUE;
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case GDK_KEY_Right:
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gtk_spin_button_spin (angle_spin, GTK_SPIN_PAGE_FORWARD, 0.0);
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return TRUE;
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case GDK_KEY_Left:
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gtk_spin_button_spin (angle_spin, GTK_SPIN_PAGE_BACKWARD, 0.0);
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return TRUE;
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default:
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break;
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}
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}
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return PIKA_TOOL_CLASS (parent_class)->key_press (tool, kevent, display);
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}
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static gboolean
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pika_rotate_tool_info_to_matrix (PikaTransformGridTool *tg_tool,
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PikaMatrix3 *transform)
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{
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pika_matrix3_identity (transform);
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pika_transform_matrix_rotate_center (transform,
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tg_tool->trans_info[PIVOT_X],
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tg_tool->trans_info[PIVOT_Y],
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tg_tool->trans_info[ANGLE]);
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return TRUE;
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}
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static void
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pika_rotate_tool_matrix_to_info (PikaTransformGridTool *tg_tool,
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const PikaMatrix3 *transform)
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{
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gdouble c;
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gdouble s;
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gdouble x;
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gdouble y;
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gdouble q;
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c = transform->coeff[0][0];
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s = transform->coeff[1][0];
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x = transform->coeff[0][2];
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y = transform->coeff[1][2];
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tg_tool->trans_info[ANGLE] = atan2 (s, c);
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q = 2.0 * (1.0 - transform->coeff[0][0]);
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if (fabs (q) > EPSILON)
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{
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tg_tool->trans_info[PIVOT_X] = ((1.0 - c) * x - s * y) / q;
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tg_tool->trans_info[PIVOT_Y] = (s * x + (1.0 - c) * y) / q;
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}
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else
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{
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PikaMatrix3 transfer;
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pika_transform_grid_tool_info_to_matrix (tg_tool, &transfer);
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pika_matrix3_invert (&transfer);
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pika_matrix3_mult (transform, &transfer);
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pika_matrix3_transform_point (&transfer,
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tg_tool->trans_info[PIVOT_X],
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tg_tool->trans_info[PIVOT_Y],
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&tg_tool->trans_info[PIVOT_X],
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&tg_tool->trans_info[PIVOT_Y]);
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}
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}
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static gchar *
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pika_rotate_tool_get_undo_desc (PikaTransformGridTool *tg_tool)
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{
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PikaTransformTool *tr_tool = PIKA_TRANSFORM_TOOL (tg_tool);
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gdouble center_x;
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gdouble center_y;
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center_x = (tr_tool->x1 + tr_tool->x2) / 2.0;
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center_y = (tr_tool->y1 + tr_tool->y2) / 2.0;
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if (fabs (tg_tool->trans_info[PIVOT_X] - center_x) <= EPSILON &&
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fabs (tg_tool->trans_info[PIVOT_Y] - center_y) <= EPSILON)
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{
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return g_strdup_printf (C_("undo-type",
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"Rotate by %-3.3g°"),
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pika_rad_to_deg (tg_tool->trans_info[ANGLE]));
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}
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else
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{
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return g_strdup_printf (C_("undo-type",
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"Rotate by %-3.3g° around (%g, %g)"),
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pika_rad_to_deg (tg_tool->trans_info[ANGLE]),
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tg_tool->trans_info[PIVOT_X],
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tg_tool->trans_info[PIVOT_Y]);
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}
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}
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static void
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pika_rotate_tool_dialog (PikaTransformGridTool *tg_tool)
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{
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PikaRotateTool *rotate = PIKA_ROTATE_TOOL (tg_tool);
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GtkWidget *grid;
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GtkWidget *button;
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GtkWidget *scale;
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GtkAdjustment *adj;
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grid = gtk_grid_new ();
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gtk_grid_set_row_spacing (GTK_GRID (grid), 2);
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gtk_grid_set_column_spacing (GTK_GRID (grid), 6);
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gtk_box_pack_start (GTK_BOX (pika_tool_gui_get_vbox (tg_tool->gui)), grid,
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FALSE, FALSE, 0);
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gtk_widget_show (grid);
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rotate->angle_adj = gtk_adjustment_new (0, -180, 180, 0.1, 15, 0);
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button = pika_spin_button_new (rotate->angle_adj, 1.0, 2);
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gtk_spin_button_set_numeric (GTK_SPIN_BUTTON (button), TRUE);
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gtk_spin_button_set_wrap (GTK_SPIN_BUTTON (button), TRUE);
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gtk_entry_set_width_chars (GTK_ENTRY (button), SB_WIDTH);
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gtk_widget_set_halign (button, GTK_ALIGN_START);
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pika_grid_attach_aligned (GTK_GRID (grid), 0, 0, _("_Angle:"),
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0.0, 0.5, button, 1);
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rotate->angle_spin_button = button;
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g_signal_connect (rotate->angle_adj, "value-changed",
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G_CALLBACK (rotate_angle_changed),
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tg_tool);
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scale = gtk_scale_new (GTK_ORIENTATION_HORIZONTAL, rotate->angle_adj);
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gtk_scale_set_draw_value (GTK_SCALE (scale), FALSE);
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gtk_widget_set_hexpand (scale, TRUE);
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gtk_grid_attach (GTK_GRID (grid), scale, 1, 1, 2, 1);
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gtk_widget_show (scale);
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adj = gtk_adjustment_new (0, -1, 1, 1, 10, 0);
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button = pika_spin_button_new (adj, 1.0, 2);
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gtk_spin_button_set_numeric (GTK_SPIN_BUTTON (button), TRUE);
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gtk_entry_set_width_chars (GTK_ENTRY (button), SB_WIDTH);
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gtk_widget_set_halign (button, GTK_ALIGN_START);
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pika_grid_attach_aligned (GTK_GRID (grid), 0, 2, _("Center _X:"),
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0.0, 0.5, button, 1);
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rotate->sizeentry = pika_size_entry_new (1, PIKA_UNIT_PIXEL, "%a",
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TRUE, TRUE, FALSE, SB_WIDTH,
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PIKA_SIZE_ENTRY_UPDATE_SIZE);
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pika_size_entry_add_field (PIKA_SIZE_ENTRY (rotate->sizeentry),
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GTK_SPIN_BUTTON (button), NULL);
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pika_size_entry_set_pixel_digits (PIKA_SIZE_ENTRY (rotate->sizeentry), 2);
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gtk_widget_set_halign (rotate->sizeentry, GTK_ALIGN_START);
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pika_grid_attach_aligned (GTK_GRID (grid), 0, 3, _("Center _Y:"),
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0.0, 0.5, rotate->sizeentry, 1);
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g_signal_connect (rotate->sizeentry, "value-changed",
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G_CALLBACK (rotate_center_changed),
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tg_tool);
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rotate->pivot_selector = pika_pivot_selector_new (0.0, 0.0, 0.0, 0.0);
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gtk_grid_attach (GTK_GRID (grid), rotate->pivot_selector, 2, 2, 1, 2);
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gtk_widget_show (rotate->pivot_selector);
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g_signal_connect (rotate->pivot_selector, "changed",
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G_CALLBACK (rotate_pivot_changed),
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tg_tool);
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}
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static void
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pika_rotate_tool_dialog_update (PikaTransformGridTool *tg_tool)
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{
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PikaRotateTool *rotate = PIKA_ROTATE_TOOL (tg_tool);
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gtk_adjustment_set_value (rotate->angle_adj,
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pika_rad_to_deg (tg_tool->trans_info[ANGLE]));
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g_signal_handlers_block_by_func (rotate->sizeentry,
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rotate_center_changed,
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tg_tool);
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pika_size_entry_set_refval (PIKA_SIZE_ENTRY (rotate->sizeentry), 0,
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tg_tool->trans_info[PIVOT_X]);
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pika_size_entry_set_refval (PIKA_SIZE_ENTRY (rotate->sizeentry), 1,
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tg_tool->trans_info[PIVOT_Y]);
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g_signal_handlers_unblock_by_func (rotate->sizeentry,
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rotate_center_changed,
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tg_tool);
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g_signal_handlers_block_by_func (rotate->pivot_selector,
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rotate_pivot_changed,
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tg_tool);
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pika_pivot_selector_set_position (
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PIKA_PIVOT_SELECTOR (rotate->pivot_selector),
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tg_tool->trans_info[PIVOT_X],
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tg_tool->trans_info[PIVOT_Y]);
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g_signal_handlers_unblock_by_func (rotate->pivot_selector,
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rotate_pivot_changed,
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tg_tool);
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}
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static void
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pika_rotate_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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PikaRotateTool *rotate = PIKA_ROTATE_TOOL (tg_tool);
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PikaDisplay *display = PIKA_TOOL (tg_tool)->display;
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PikaImage *image = pika_display_get_image (display);
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gdouble xres;
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gdouble yres;
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tg_tool->trans_info[ANGLE] = 0.0;
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tg_tool->trans_info[PIVOT_X] = (gdouble) (tr_tool->x1 + tr_tool->x2) / 2.0;
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tg_tool->trans_info[PIVOT_Y] = (gdouble) (tr_tool->y1 + tr_tool->y2) / 2.0;
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pika_image_get_resolution (image, &xres, &yres);
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g_signal_handlers_block_by_func (rotate->sizeentry,
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rotate_center_changed,
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tg_tool);
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pika_size_entry_set_unit (PIKA_SIZE_ENTRY (rotate->sizeentry),
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pika_display_get_shell (display)->unit);
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pika_size_entry_set_resolution (PIKA_SIZE_ENTRY (rotate->sizeentry), 0,
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xres, FALSE);
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pika_size_entry_set_resolution (PIKA_SIZE_ENTRY (rotate->sizeentry), 1,
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yres, FALSE);
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pika_size_entry_set_refval_boundaries (PIKA_SIZE_ENTRY (rotate->sizeentry), 0,
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-65536,
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65536 +
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pika_image_get_width (image));
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pika_size_entry_set_refval_boundaries (PIKA_SIZE_ENTRY (rotate->sizeentry), 1,
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-65536,
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65536 +
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pika_image_get_height (image));
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pika_size_entry_set_size (PIKA_SIZE_ENTRY (rotate->sizeentry), 0,
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tr_tool->x1, tr_tool->x2);
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pika_size_entry_set_size (PIKA_SIZE_ENTRY (rotate->sizeentry), 1,
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tr_tool->y1, tr_tool->y2);
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g_signal_handlers_unblock_by_func (rotate->sizeentry,
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rotate_center_changed,
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tg_tool);
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pika_pivot_selector_set_bounds (PIKA_PIVOT_SELECTOR (rotate->pivot_selector),
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tr_tool->x1, tr_tool->y1,
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tr_tool->x2, tr_tool->y2);
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}
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static void
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pika_rotate_tool_readjust (PikaTransformGridTool *tg_tool)
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{
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PikaTool *tool = PIKA_TOOL (tg_tool);
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PikaDisplayShell *shell = pika_display_get_shell (tool->display);
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tg_tool->trans_info[ANGLE] = -pika_deg_to_rad (shell->rotate_angle);
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if (tg_tool->trans_info[ANGLE] <= -G_PI)
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tg_tool->trans_info[ANGLE] += 2.0 * G_PI;
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pika_display_shell_untransform_xy_f (shell,
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shell->disp_width / 2.0,
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shell->disp_height / 2.0,
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&tg_tool->trans_info[PIVOT_X],
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&tg_tool->trans_info[PIVOT_Y]);
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}
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static PikaToolWidget *
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pika_rotate_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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PikaDisplayShell *shell = pika_display_get_shell (tool->display);
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PikaToolWidget *widget;
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widget = pika_tool_rotate_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,
|
|
tg_tool->trans_info[PIVOT_X],
|
|
tg_tool->trans_info[PIVOT_Y],
|
|
tg_tool->trans_info[ANGLE]);
|
|
|
|
g_object_set (widget,
|
|
"inside-function", PIKA_TRANSFORM_FUNCTION_ROTATE,
|
|
"outside-function", PIKA_TRANSFORM_FUNCTION_ROTATE,
|
|
"use-pivot-handle", TRUE,
|
|
NULL);
|
|
|
|
return widget;
|
|
}
|
|
|
|
static void
|
|
pika_rotate_tool_update_widget (PikaTransformGridTool *tg_tool)
|
|
{
|
|
PIKA_TRANSFORM_GRID_TOOL_CLASS (parent_class)->update_widget (tg_tool);
|
|
|
|
g_object_set (tg_tool->widget,
|
|
"angle", tg_tool->trans_info[ANGLE],
|
|
"pivot-x", tg_tool->trans_info[PIVOT_X],
|
|
"pivot-y", tg_tool->trans_info[PIVOT_Y],
|
|
NULL);
|
|
}
|
|
|
|
static void
|
|
pika_rotate_tool_widget_changed (PikaTransformGridTool *tg_tool)
|
|
{
|
|
g_object_get (tg_tool->widget,
|
|
"angle", &tg_tool->trans_info[ANGLE],
|
|
"pivot-x", &tg_tool->trans_info[PIVOT_X],
|
|
"pivot-y", &tg_tool->trans_info[PIVOT_Y],
|
|
NULL);
|
|
|
|
PIKA_TRANSFORM_GRID_TOOL_CLASS (parent_class)->widget_changed (tg_tool);
|
|
}
|
|
|
|
static void
|
|
rotate_angle_changed (GtkAdjustment *adj,
|
|
PikaTransformGridTool *tg_tool)
|
|
{
|
|
gdouble value = pika_deg_to_rad (gtk_adjustment_get_value (adj));
|
|
|
|
if (fabs (value - tg_tool->trans_info[ANGLE]) > EPSILON)
|
|
{
|
|
PikaTool *tool = PIKA_TOOL (tg_tool);
|
|
PikaTransformTool *tr_tool = PIKA_TRANSFORM_TOOL (tg_tool);
|
|
|
|
tg_tool->trans_info[ANGLE] = value;
|
|
|
|
pika_transform_grid_tool_push_internal_undo (tg_tool, TRUE);
|
|
|
|
pika_transform_tool_recalc_matrix (tr_tool, tool->display);
|
|
}
|
|
}
|
|
|
|
static void
|
|
rotate_center_changed (GtkWidget *widget,
|
|
PikaTransformGridTool *tg_tool)
|
|
{
|
|
gdouble px = pika_size_entry_get_refval (PIKA_SIZE_ENTRY (widget), 0);
|
|
gdouble py = pika_size_entry_get_refval (PIKA_SIZE_ENTRY (widget), 1);
|
|
|
|
if ((px != tg_tool->trans_info[PIVOT_X]) ||
|
|
(py != tg_tool->trans_info[PIVOT_Y]))
|
|
{
|
|
PikaTool *tool = PIKA_TOOL (tg_tool);
|
|
PikaTransformTool *tr_tool = PIKA_TRANSFORM_TOOL (tg_tool);
|
|
|
|
tg_tool->trans_info[PIVOT_X] = px;
|
|
tg_tool->trans_info[PIVOT_Y] = py;
|
|
|
|
pika_transform_grid_tool_push_internal_undo (tg_tool, TRUE);
|
|
|
|
pika_transform_tool_recalc_matrix (tr_tool, tool->display);
|
|
}
|
|
}
|
|
|
|
static void
|
|
rotate_pivot_changed (PikaPivotSelector *selector,
|
|
PikaTransformGridTool *tg_tool)
|
|
{
|
|
PikaTool *tool = PIKA_TOOL (tg_tool);
|
|
PikaTransformTool *tr_tool = PIKA_TRANSFORM_TOOL (tg_tool);
|
|
|
|
pika_pivot_selector_get_position (selector,
|
|
&tg_tool->trans_info[PIVOT_X],
|
|
&tg_tool->trans_info[PIVOT_Y]);
|
|
|
|
pika_transform_grid_tool_push_internal_undo (tg_tool, TRUE);
|
|
|
|
pika_transform_tool_recalc_matrix (tr_tool, tool->display);
|
|
}
|
