296 lines
9.7 KiB
C
296 lines
9.7 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 "display-types.h"
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#include "core/pika.h"
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#include "core/pikaviewable.h"
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#include "widgets/pikadial.h"
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#include "widgets/pikahelp-ids.h"
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#include "widgets/pikaviewabledialog.h"
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#include "pikadisplay.h"
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#include "pikadisplayshell.h"
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#include "pikadisplayshell-rotate.h"
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#include "pikadisplayshell-rotate-dialog.h"
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#include "pika-intl.h"
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#define RESPONSE_RESET 1
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typedef struct
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{
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PikaDisplayShell *shell;
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GtkAdjustment *rotate_adj;
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gdouble old_angle;
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} RotateDialogData;
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/* local function prototypes */
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static void pika_display_shell_rotate_dialog_response (GtkWidget *widget,
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gint response_id,
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RotateDialogData *dialog);
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static void pika_display_shell_rotate_dialog_free (RotateDialogData *dialog);
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static void rotate_adjustment_changed (GtkAdjustment *adj,
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RotateDialogData *dialog);
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static void display_shell_rotated (PikaDisplayShell *shell,
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RotateDialogData *dialog);
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static gboolean deg_to_rad (GBinding *binding,
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const GValue *from_value,
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GValue *to_value,
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gpointer user_data);
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static gboolean rad_to_deg (GBinding *binding,
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const GValue *from_value,
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GValue *to_value,
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gpointer user_data);
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/* public functions */
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/**
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* pika_display_shell_rotate_dialog:
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* @shell: the #PikaDisplayShell
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*
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* Constructs and displays a dialog allowing the user to enter a
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* custom display rotate.
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**/
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void
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pika_display_shell_rotate_dialog (PikaDisplayShell *shell)
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{
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RotateDialogData *data;
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PikaImage *image;
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GtkWidget *toplevel;
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GtkWidget *hbox;
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GtkWidget *spin;
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GtkWidget *dial;
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GtkWidget *label;
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g_return_if_fail (PIKA_IS_DISPLAY_SHELL (shell));
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if (shell->rotate_dialog)
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{
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gtk_window_present (GTK_WINDOW (shell->rotate_dialog));
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return;
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}
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image = pika_display_get_image (shell->display);
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data = g_slice_new (RotateDialogData);
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data->shell = shell;
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data->old_angle = shell->rotate_angle;
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g_set_weak_pointer
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(&shell->rotate_dialog,
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pika_viewable_dialog_new (g_list_prepend (NULL, image),
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pika_get_user_context (shell->display->pika),
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_("Rotate View"), "display-rotate",
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PIKA_ICON_OBJECT_ROTATE_180,
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_("Select Rotation Angle"),
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GTK_WIDGET (shell),
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pika_standard_help_func,
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PIKA_HELP_VIEW_ROTATE_OTHER,
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_("_Reset"), RESPONSE_RESET,
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_("_Cancel"), GTK_RESPONSE_CANCEL,
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_("_OK"), GTK_RESPONSE_OK,
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NULL));
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pika_dialog_set_alternative_button_order (GTK_DIALOG (shell->rotate_dialog),
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GTK_RESPONSE_OK,
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GTK_RESPONSE_CANCEL,
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-1);
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g_object_weak_ref (G_OBJECT (shell->rotate_dialog),
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(GWeakNotify) pika_display_shell_rotate_dialog_free, data);
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toplevel = gtk_widget_get_toplevel (GTK_WIDGET (shell));
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gtk_window_set_transient_for (GTK_WINDOW (shell->rotate_dialog),
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GTK_WINDOW (toplevel));
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gtk_window_set_destroy_with_parent (GTK_WINDOW (shell->rotate_dialog), TRUE);
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g_signal_connect (shell->rotate_dialog, "response",
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G_CALLBACK (pika_display_shell_rotate_dialog_response),
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data);
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hbox = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 6);
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gtk_container_set_border_width (GTK_CONTAINER (hbox), 12);
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gtk_box_pack_start (GTK_BOX (gtk_dialog_get_content_area (GTK_DIALOG (shell->rotate_dialog))),
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hbox, TRUE, TRUE, 0);
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gtk_widget_show (hbox);
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label = gtk_label_new (_("Angle:"));
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gtk_box_pack_start (GTK_BOX (hbox), label, FALSE, FALSE, 0);
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gtk_widget_show (label);
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data->rotate_adj = gtk_adjustment_new (shell->rotate_angle,
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0.0, 360.0, 1, 15, 0);
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spin = pika_spin_button_new (data->rotate_adj, 1.0, 2);
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gtk_spin_button_set_numeric (GTK_SPIN_BUTTON (spin), TRUE);
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gtk_spin_button_set_wrap (GTK_SPIN_BUTTON (spin), TRUE);
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gtk_entry_set_activates_default (GTK_ENTRY (spin), TRUE);
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gtk_box_pack_start (GTK_BOX (hbox), spin, TRUE, TRUE, 0);
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gtk_widget_show (spin);
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label = gtk_label_new (_("degrees"));
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gtk_box_pack_start (GTK_BOX (hbox), label, FALSE, FALSE, 0);
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gtk_widget_show (label);
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dial = pika_dial_new ();
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g_object_set (dial,
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"size", 32,
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"background", PIKA_CIRCLE_BACKGROUND_PLAIN,
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"draw-beta", FALSE,
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NULL);
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gtk_box_pack_start (GTK_BOX (hbox), dial, FALSE, FALSE, 0);
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gtk_widget_show (dial);
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g_object_bind_property_full (data->rotate_adj, "value",
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dial, "alpha",
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G_BINDING_BIDIRECTIONAL |
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G_BINDING_SYNC_CREATE,
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deg_to_rad,
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rad_to_deg,
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NULL, NULL);
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g_signal_connect (data->rotate_adj, "value-changed",
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G_CALLBACK (rotate_adjustment_changed),
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data);
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g_signal_connect (shell, "rotated",
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G_CALLBACK (display_shell_rotated),
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data);
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gtk_widget_show (shell->rotate_dialog);
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}
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static void
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pika_display_shell_rotate_dialog_response (GtkWidget *widget,
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gint response_id,
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RotateDialogData *dialog)
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{
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switch (response_id)
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{
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case RESPONSE_RESET:
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gtk_adjustment_set_value (dialog->rotate_adj, 0.0);
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break;
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case GTK_RESPONSE_CANCEL:
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gtk_adjustment_set_value (dialog->rotate_adj, dialog->old_angle);
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/* fall thru */
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default:
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gtk_widget_destroy (dialog->shell->rotate_dialog);
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break;
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}
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}
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static void
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pika_display_shell_rotate_dialog_free (RotateDialogData *dialog)
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{
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g_signal_handlers_disconnect_by_func (dialog->shell,
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display_shell_rotated,
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dialog);
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g_slice_free (RotateDialogData, dialog);
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}
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static void
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rotate_adjustment_changed (GtkAdjustment *adj,
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RotateDialogData *dialog)
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{
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gdouble angle = gtk_adjustment_get_value (dialog->rotate_adj);
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g_signal_handlers_block_by_func (dialog->shell,
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display_shell_rotated,
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dialog);
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pika_display_shell_rotate_to (dialog->shell, angle);
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g_signal_handlers_unblock_by_func (dialog->shell,
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display_shell_rotated,
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dialog);
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}
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static void
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display_shell_rotated (PikaDisplayShell *shell,
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RotateDialogData *dialog)
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{
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g_signal_handlers_block_by_func (dialog->rotate_adj,
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rotate_adjustment_changed,
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dialog);
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gtk_adjustment_set_value (dialog->rotate_adj, shell->rotate_angle);
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g_signal_handlers_unblock_by_func (dialog->rotate_adj,
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rotate_adjustment_changed,
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dialog);
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}
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static gboolean
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deg_to_rad (GBinding *binding,
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const GValue *from_value,
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GValue *to_value,
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gpointer user_data)
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{
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gdouble value = g_value_get_double (from_value);
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value = 360.0 - value;
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value *= G_PI / 180.0;
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g_value_set_double (to_value, value);
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return TRUE;
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}
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static gboolean
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rad_to_deg (GBinding *binding,
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const GValue *from_value,
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GValue *to_value,
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gpointer user_data)
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{
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gdouble value = g_value_get_double (from_value);
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value *= 180.0 / G_PI;
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value = 360.0 - value;
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g_value_set_double (to_value, value);
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return TRUE;
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}
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