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-rw-r--r--app/display/gimpdisplayshell-rotate-dialog.c293
1 files changed, 293 insertions, 0 deletions
diff --git a/app/display/gimpdisplayshell-rotate-dialog.c b/app/display/gimpdisplayshell-rotate-dialog.c
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+++ b/app/display/gimpdisplayshell-rotate-dialog.c
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+/* GIMP - The GNU Image Manipulation Program
+ * Copyright (C) 1995 Spencer Kimball and Peter Mattis
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include "config.h"
+
+#include <gegl.h>
+#include <gtk/gtk.h>
+
+#include "libgimpmath/gimpmath.h"
+#include "libgimpwidgets/gimpwidgets.h"
+
+#include "display-types.h"
+
+#include "core/gimp.h"
+#include "core/gimpviewable.h"
+
+#include "widgets/gimpdial.h"
+#include "widgets/gimphelp-ids.h"
+#include "widgets/gimpviewabledialog.h"
+
+#include "gimpdisplay.h"
+#include "gimpdisplayshell.h"
+#include "gimpdisplayshell-rotate.h"
+#include "gimpdisplayshell-rotate-dialog.h"
+
+#include "gimp-intl.h"
+
+
+#define RESPONSE_RESET 1
+
+
+typedef struct
+{
+ GimpDisplayShell *shell;
+ GtkAdjustment *rotate_adj;
+ gdouble old_angle;
+} RotateDialogData;
+
+
+/* local function prototypes */
+
+static void gimp_display_shell_rotate_dialog_response (GtkWidget *widget,
+ gint response_id,
+ RotateDialogData *dialog);
+static void gimp_display_shell_rotate_dialog_free (RotateDialogData *dialog);
+
+static void rotate_adjustment_changed (GtkAdjustment *adj,
+ RotateDialogData *dialog);
+static void display_shell_rotated (GimpDisplayShell *shell,
+ RotateDialogData *dialog);
+
+static gboolean deg_to_rad (GBinding *binding,
+ const GValue *from_value,
+ GValue *to_value,
+ gpointer user_data);
+static gboolean rad_to_deg (GBinding *binding,
+ const GValue *from_value,
+ GValue *to_value,
+ gpointer user_data);
+
+
+/* public functions */
+
+/**
+ * gimp_display_shell_rotate_dialog:
+ * @shell: the #GimpDisplayShell
+ *
+ * Constructs and displays a dialog allowing the user to enter a
+ * custom display rotate.
+ **/
+void
+gimp_display_shell_rotate_dialog (GimpDisplayShell *shell)
+{
+ RotateDialogData *data;
+ GimpImage *image;
+ GtkWidget *toplevel;
+ GtkWidget *hbox;
+ GtkWidget *spin;
+ GtkWidget *dial;
+ GtkWidget *label;
+
+ g_return_if_fail (GIMP_IS_DISPLAY_SHELL (shell));
+
+ if (shell->rotate_dialog)
+ {
+ gtk_window_present (GTK_WINDOW (shell->rotate_dialog));
+ return;
+ }
+
+ image = gimp_display_get_image (shell->display);
+
+ data = g_slice_new (RotateDialogData);
+
+ data->shell = shell;
+ data->old_angle = shell->rotate_angle;
+
+ shell->rotate_dialog =
+ gimp_viewable_dialog_new (GIMP_VIEWABLE (image),
+ gimp_get_user_context (shell->display->gimp),
+ _("Rotate View"), "display-rotate",
+ GIMP_ICON_OBJECT_ROTATE_180,
+ _("Select Rotation Angle"),
+ GTK_WIDGET (shell),
+ gimp_standard_help_func,
+ GIMP_HELP_VIEW_ROTATE_OTHER,
+
+ _("_Reset"), RESPONSE_RESET,
+ _("_Cancel"), GTK_RESPONSE_CANCEL,
+ _("_OK"), GTK_RESPONSE_OK,
+
+ NULL);
+
+ gtk_dialog_set_alternative_button_order (GTK_DIALOG (shell->rotate_dialog),
+ GTK_RESPONSE_OK,
+ GTK_RESPONSE_CANCEL,
+ -1);
+
+ g_object_weak_ref (G_OBJECT (shell->rotate_dialog),
+ (GWeakNotify) gimp_display_shell_rotate_dialog_free, data);
+
+ g_object_add_weak_pointer (G_OBJECT (shell->rotate_dialog),
+ (gpointer) &shell->rotate_dialog);
+
+ toplevel = gtk_widget_get_toplevel (GTK_WIDGET (shell));
+
+ gtk_window_set_transient_for (GTK_WINDOW (shell->rotate_dialog),
+ GTK_WINDOW (toplevel));
+ gtk_window_set_destroy_with_parent (GTK_WINDOW (shell->rotate_dialog), TRUE);
+
+ g_signal_connect (shell->rotate_dialog, "response",
+ G_CALLBACK (gimp_display_shell_rotate_dialog_response),
+ data);
+
+ hbox = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 6);
+ gtk_container_set_border_width (GTK_CONTAINER (hbox), 12);
+ gtk_box_pack_start (GTK_BOX (gtk_dialog_get_content_area (GTK_DIALOG (shell->rotate_dialog))),
+ hbox, TRUE, TRUE, 0);
+ gtk_widget_show (hbox);
+
+ label = gtk_label_new (_("Angle:"));
+ gtk_box_pack_start (GTK_BOX (hbox), label, FALSE, FALSE, 0);
+ gtk_widget_show (label);
+
+ data->rotate_adj = (GtkAdjustment *)
+ gtk_adjustment_new (shell->rotate_angle, 0.0, 360.0, 1, 15, 0);
+ spin = gimp_spin_button_new (data->rotate_adj, 1.0, 2);
+ gtk_spin_button_set_numeric (GTK_SPIN_BUTTON (spin), TRUE);
+ gtk_spin_button_set_wrap (GTK_SPIN_BUTTON (spin), TRUE);
+ gtk_entry_set_activates_default (GTK_ENTRY (spin), TRUE);
+ gtk_box_pack_start (GTK_BOX (hbox), spin, TRUE, TRUE, 0);
+ gtk_widget_show (spin);
+
+ label = gtk_label_new (_("degrees"));
+ gtk_box_pack_start (GTK_BOX (hbox), label, FALSE, FALSE, 0);
+ gtk_widget_show (label);
+
+ dial = gimp_dial_new ();
+ g_object_set (dial,
+ "size", 32,
+ "background", GIMP_CIRCLE_BACKGROUND_PLAIN,
+ "draw-beta", FALSE,
+ NULL);
+ gtk_box_pack_start (GTK_BOX (hbox), dial, FALSE, FALSE, 0);
+ gtk_widget_show (dial);
+
+ g_object_bind_property_full (data->rotate_adj, "value",
+ dial, "alpha",
+ G_BINDING_BIDIRECTIONAL |
+ G_BINDING_SYNC_CREATE,
+ deg_to_rad,
+ rad_to_deg,
+ NULL, NULL);
+
+ g_signal_connect (data->rotate_adj, "value-changed",
+ G_CALLBACK (rotate_adjustment_changed),
+ data);
+ g_signal_connect (shell, "rotated",
+ G_CALLBACK (display_shell_rotated),
+ data);
+
+ gtk_widget_show (shell->rotate_dialog);
+}
+
+static void
+gimp_display_shell_rotate_dialog_response (GtkWidget *widget,
+ gint response_id,
+ RotateDialogData *dialog)
+{
+ switch (response_id)
+ {
+ case RESPONSE_RESET:
+ gtk_adjustment_set_value (dialog->rotate_adj, 0.0);
+ break;
+
+ case GTK_RESPONSE_CANCEL:
+ gtk_adjustment_set_value (dialog->rotate_adj, dialog->old_angle);
+ /* fall thru */
+
+ default:
+ gtk_widget_destroy (dialog->shell->rotate_dialog);
+ break;
+ }
+}
+
+static void
+gimp_display_shell_rotate_dialog_free (RotateDialogData *dialog)
+{
+ g_signal_handlers_disconnect_by_func (dialog->shell,
+ display_shell_rotated,
+ dialog);
+
+ g_slice_free (RotateDialogData, dialog);
+}
+
+static void
+rotate_adjustment_changed (GtkAdjustment *adj,
+ RotateDialogData *dialog)
+{
+ gdouble angle = gtk_adjustment_get_value (dialog->rotate_adj);
+
+ g_signal_handlers_block_by_func (dialog->shell,
+ display_shell_rotated,
+ dialog);
+
+ gimp_display_shell_rotate_to (dialog->shell, angle);
+
+ g_signal_handlers_unblock_by_func (dialog->shell,
+ display_shell_rotated,
+ dialog);
+}
+
+static void
+display_shell_rotated (GimpDisplayShell *shell,
+ RotateDialogData *dialog)
+{
+ g_signal_handlers_block_by_func (dialog->rotate_adj,
+ rotate_adjustment_changed,
+ dialog);
+
+ gtk_adjustment_set_value (dialog->rotate_adj, shell->rotate_angle);
+
+ g_signal_handlers_unblock_by_func (dialog->rotate_adj,
+ rotate_adjustment_changed,
+ dialog);
+}
+
+static gboolean
+deg_to_rad (GBinding *binding,
+ const GValue *from_value,
+ GValue *to_value,
+ gpointer user_data)
+{
+ gdouble value = g_value_get_double (from_value);
+
+ value = 360.0 - value;
+
+ value *= G_PI / 180.0;
+
+ g_value_set_double (to_value, value);
+
+ return TRUE;
+}
+
+static gboolean
+rad_to_deg (GBinding *binding,
+ const GValue *from_value,
+ GValue *to_value,
+ gpointer user_data)
+{
+ gdouble value = g_value_get_double (from_value);
+
+ value *= 180.0 / G_PI;
+
+ value = 360.0 - value;
+
+ g_value_set_double (to_value, value);
+
+ return TRUE;
+}
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