PIKApp/app/tools/pikatool-progress.c

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2023-09-26 00:35:21 +02:00
/* PIKA - Photo and Image Kooker Application
* a rebranding of The GNU Image Manipulation Program (created with heckimp)
* A derived work which may be trivial. However, any changes may be (C)2023 by Aldercone Studio
*
* Original copyright, applying to most contents (license remains unchanged):
* Copyright (C) 1995 Spencer Kimball and Peter Mattis
*
* pikatool-progress.c
* Copyright (C) 2011 Michael Natterer <mitch@gimp.org>
*
* 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 <gdk/gdkkeysyms.h>
#include "tools-types.h"
#include "core/pikaprogress.h"
#include "widgets/pikawidgets-utils.h"
#include "display/pikacanvasprogress.h"
#include "display/pikadisplay.h"
#include "display/pikadisplayshell.h"
#include "display/pikadisplayshell-items.h"
#include "display/pikadisplayshell-transform.h"
#include "pikatool.h"
#include "pikatool-progress.h"
/* local function prototypes */
static PikaProgress * pika_tool_progress_start (PikaProgress *progress,
gboolean cancelable,
const gchar *message);
static void pika_tool_progress_end (PikaProgress *progress);
static gboolean pika_tool_progress_is_active (PikaProgress *progress);
static void pika_tool_progress_set_text (PikaProgress *progress,
const gchar *message);
static void pika_tool_progress_set_value (PikaProgress *progress,
gdouble percentage);
static gdouble pika_tool_progress_get_value (PikaProgress *progress);
static void pika_tool_progress_pulse (PikaProgress *progress);
static gboolean pika_tool_progress_message (PikaProgress *progress,
Pika *pika,
PikaMessageSeverity severity,
const gchar *domain,
const gchar *message);
/* public functions */
void
pika_tool_progress_iface_init (PikaProgressInterface *iface)
{
iface->start = pika_tool_progress_start;
iface->end = pika_tool_progress_end;
iface->is_active = pika_tool_progress_is_active;
iface->set_text = pika_tool_progress_set_text;
iface->set_value = pika_tool_progress_set_value;
iface->get_value = pika_tool_progress_get_value;
iface->pulse = pika_tool_progress_pulse;
iface->message = pika_tool_progress_message;
}
/* private functions */
static gboolean
pika_tool_progress_button_press (GtkWidget *widget,
const GdkEventButton *bevent,
PikaTool *tool)
{
if (tool->progress_cancelable &&
bevent->type == GDK_BUTTON_PRESS &&
bevent->button == 1)
{
GtkWidget *event_widget;
PikaDisplayShell *shell;
event_widget = gtk_get_event_widget ((GdkEvent *) bevent);
shell = pika_display_get_shell (tool->progress_display);
if (shell->canvas == event_widget)
{
gint x, y;
pika_display_shell_unzoom_xy (shell, bevent->x, bevent->y,
&x, &y, FALSE);
if (pika_canvas_item_hit (tool->progress, x, y))
{
pika_progress_cancel (PIKA_PROGRESS (tool));
}
}
}
return TRUE;
}
static gboolean
pika_tool_progress_key_press (GtkWidget *widget,
const GdkEventKey *kevent,
PikaTool *tool)
{
if (tool->progress_cancelable &&
kevent->keyval == GDK_KEY_Escape)
{
pika_progress_cancel (PIKA_PROGRESS (tool));
}
return TRUE;
}
static PikaProgress *
pika_tool_progress_start (PikaProgress *progress,
gboolean cancelable,
const gchar *message)
{
PikaTool *tool = PIKA_TOOL (progress);
PikaDisplayShell *shell;
gint x, y;
g_return_val_if_fail (PIKA_IS_DISPLAY (tool->display), NULL);
g_return_val_if_fail (tool->progress == NULL, NULL);
shell = pika_display_get_shell (tool->display);
x = shell->disp_width / 2;
y = shell->disp_height / 2;
pika_display_shell_unzoom_xy (shell, x, y, &x, &y, FALSE);
tool->progress = pika_canvas_progress_new (shell,
PIKA_HANDLE_ANCHOR_CENTER,
x, y);
pika_display_shell_add_unrotated_item (shell, tool->progress);
g_object_unref (tool->progress);
pika_progress_start (PIKA_PROGRESS (tool->progress), FALSE,
"%s", message);
tool->progress_display = tool->display;
tool->progress_grab_widget = gtk_invisible_new ();
gtk_widget_show (tool->progress_grab_widget);
gtk_grab_add (tool->progress_grab_widget);
g_signal_connect (tool->progress_grab_widget, "button-press-event",
G_CALLBACK (pika_tool_progress_button_press),
tool);
g_signal_connect (tool->progress_grab_widget, "key-press-event",
G_CALLBACK (pika_tool_progress_key_press),
tool);
tool->progress_cancelable = cancelable;
return progress;
}
static void
pika_tool_progress_end (PikaProgress *progress)
{
PikaTool *tool = PIKA_TOOL (progress);
if (tool->progress)
{
PikaDisplayShell *shell = pika_display_get_shell (tool->progress_display);
pika_progress_end (PIKA_PROGRESS (tool->progress));
pika_display_shell_remove_unrotated_item (shell, tool->progress);
gtk_grab_remove (tool->progress_grab_widget);
gtk_widget_destroy (tool->progress_grab_widget);
tool->progress = NULL;
tool->progress_display = NULL;
tool->progress_grab_widget = NULL;
tool->progress_cancelable = FALSE;
}
}
static gboolean
pika_tool_progress_is_active (PikaProgress *progress)
{
PikaTool *tool = PIKA_TOOL (progress);
return tool->progress != NULL;
}
static void
pika_tool_progress_set_text (PikaProgress *progress,
const gchar *message)
{
PikaTool *tool = PIKA_TOOL (progress);
if (tool->progress)
pika_progress_set_text_literal (PIKA_PROGRESS (tool->progress), message);
}
static void
pika_tool_progress_set_value (PikaProgress *progress,
gdouble percentage)
{
PikaTool *tool = PIKA_TOOL (progress);
if (tool->progress)
pika_progress_set_value (PIKA_PROGRESS (tool->progress), percentage);
}
static gdouble
pika_tool_progress_get_value (PikaProgress *progress)
{
PikaTool *tool = PIKA_TOOL (progress);
if (tool->progress)
return pika_progress_get_value (PIKA_PROGRESS (tool->progress));
return 0.0;
}
static void
pika_tool_progress_pulse (PikaProgress *progress)
{
}
static gboolean
pika_tool_progress_message (PikaProgress *progress,
Pika *pika,
PikaMessageSeverity severity,
const gchar *domain,
const gchar *message)
{
return FALSE;
}