PIKApp/app/widgets/pikatoolbox-color-area.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
*
* 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 "libpikawidgets/pikawidgets.h"
#include "widgets-types.h"
#include "config/pikaguiconfig.h"
#include "core/pika.h"
#include "core/pikacontext.h"
#include "core/pikadisplay.h"
#include "pikaaction.h"
#include "pikacolordialog.h"
#include "pikadialogfactory.h"
#include "pikafgbgeditor.h"
#include "pikahelp-ids.h"
#include "pikasessioninfo.h"
#include "pikatoolbox.h"
#include "pikatoolbox-color-area.h"
#include "pikauimanager.h"
#include "pika-intl.h"
/* local function prototypes */
static void color_area_foreground_changed (PikaContext *context,
const PikaRGB *color,
PikaColorDialog *dialog);
static void color_area_background_changed (PikaContext *context,
const PikaRGB *color,
PikaColorDialog *dialog);
static void color_area_dialog_update (PikaColorDialog *dialog,
const PikaRGB *color,
PikaColorDialogState state,
PikaContext *context);
static void color_area_color_clicked (PikaFgBgEditor *editor,
PikaActiveColor active_color,
PikaContext *context);
static void color_area_color_changed (PikaContext *context);
static void color_area_tooltip (PikaFgBgEditor *editor,
PikaFgBgTarget target,
GtkTooltip *tooltip,
PikaToolbox *toolbox);
/* local variables */
static GtkWidget *color_area = NULL;
static GtkWidget *color_dialog = NULL;
static gboolean color_dialog_active = FALSE;
static PikaActiveColor edit_color = PIKA_ACTIVE_COLOR_FOREGROUND;
static PikaRGB revert_fg;
static PikaRGB revert_bg;
/* public functions */
GtkWidget *
pika_toolbox_color_area_create (PikaToolbox *toolbox,
gint width,
gint height)
{
PikaContext *context;
g_return_val_if_fail (PIKA_IS_TOOLBOX (toolbox), NULL);
context = pika_toolbox_get_context (toolbox);
color_area = pika_fg_bg_editor_new (context);
gtk_widget_set_size_request (color_area, width, height);
pika_help_set_help_data (color_area, NULL,
PIKA_HELP_TOOLBOX_COLOR_AREA);
g_object_set (color_area, "has-tooltip", TRUE, NULL);
g_signal_connect (color_area, "color-clicked",
G_CALLBACK (color_area_color_clicked),
context);
g_signal_connect_swapped (color_area, "colors-swapped",
G_CALLBACK (color_area_color_changed),
context);
g_signal_connect_swapped (color_area, "colors-default",
G_CALLBACK (color_area_color_changed),
context);
g_signal_connect_swapped (color_area, "color-dropped",
G_CALLBACK (color_area_color_changed),
context);
g_signal_connect (color_area, "tooltip",
G_CALLBACK (color_area_tooltip),
toolbox);
return color_area;
}
/* private functions */
static void
color_area_foreground_changed (PikaContext *context,
const PikaRGB *color,
PikaColorDialog *dialog)
{
if (edit_color == PIKA_ACTIVE_COLOR_FOREGROUND)
{
g_signal_handlers_block_by_func (dialog,
color_area_dialog_update,
context);
/* FIXME this should use PikaColorDialog API */
pika_color_selection_set_color (PIKA_COLOR_SELECTION (dialog->selection),
color);
g_signal_handlers_unblock_by_func (dialog,
color_area_dialog_update,
context);
}
}
static void
color_area_background_changed (PikaContext *context,
const PikaRGB *color,
PikaColorDialog *dialog)
{
if (edit_color == PIKA_ACTIVE_COLOR_BACKGROUND)
{
g_signal_handlers_block_by_func (dialog,
color_area_dialog_update,
context);
/* FIXME this should use PikaColorDialog API */
pika_color_selection_set_color (PIKA_COLOR_SELECTION (dialog->selection),
color);
g_signal_handlers_unblock_by_func (dialog,
color_area_dialog_update,
context);
}
}
static void
color_area_dialog_update (PikaColorDialog *dialog,
const PikaRGB *color,
PikaColorDialogState state,
PikaContext *context)
{
switch (state)
{
case PIKA_COLOR_DIALOG_OK:
gtk_widget_hide (color_dialog);
color_dialog_active = FALSE;
/* Fallthrough */
case PIKA_COLOR_DIALOG_UPDATE:
if (edit_color == PIKA_ACTIVE_COLOR_FOREGROUND)
{
g_signal_handlers_block_by_func (context,
color_area_foreground_changed,
dialog);
pika_context_set_foreground (context, color);
g_signal_handlers_unblock_by_func (context,
color_area_foreground_changed,
dialog);
}
else
{
g_signal_handlers_block_by_func (context,
color_area_background_changed,
dialog);
pika_context_set_background (context, color);
g_signal_handlers_unblock_by_func (context,
color_area_background_changed,
dialog);
}
break;
case PIKA_COLOR_DIALOG_CANCEL:
gtk_widget_hide (color_dialog);
color_dialog_active = FALSE;
pika_context_set_foreground (context, &revert_fg);
pika_context_set_background (context, &revert_bg);
break;
}
if (pika_context_get_display (context))
pika_display_grab_focus (pika_context_get_display (context));
}
static void
color_area_color_clicked (PikaFgBgEditor *editor,
PikaActiveColor active_color,
PikaContext *context)
{
PikaRGB color;
const gchar *title;
if (! color_dialog_active)
{
pika_context_get_foreground (context, &revert_fg);
pika_context_get_background (context, &revert_bg);
}
if (active_color == PIKA_ACTIVE_COLOR_FOREGROUND)
{
pika_context_get_foreground (context, &color);
title = _("Change Foreground Color");
}
else
{
pika_context_get_background (context, &color);
title = _("Change Background Color");
}
edit_color = active_color;
if (! color_dialog)
{
color_dialog = pika_color_dialog_new (NULL, context, TRUE,
NULL, NULL, NULL,
GTK_WIDGET (editor),
pika_dialog_factory_get_singleton (),
"pika-toolbox-color-dialog",
&color,
TRUE, FALSE);
g_signal_connect_object (color_dialog, "update",
G_CALLBACK (color_area_dialog_update),
G_OBJECT (context), 0);
g_signal_connect_object (context, "foreground-changed",
G_CALLBACK (color_area_foreground_changed),
G_OBJECT (color_dialog), 0);
g_signal_connect_object (context, "background-changed",
G_CALLBACK (color_area_background_changed),
G_OBJECT (color_dialog), 0);
}
else if (! gtk_widget_get_visible (color_dialog))
{
pika_dialog_factory_position_dialog (pika_dialog_factory_get_singleton (),
"pika-toolbox-color-dialog",
color_dialog,
pika_widget_get_monitor (GTK_WIDGET (editor)));
}
gtk_window_set_title (GTK_WINDOW (color_dialog), title);
pika_color_dialog_set_color (PIKA_COLOR_DIALOG (color_dialog), &color);
gtk_window_present (GTK_WINDOW (color_dialog));
color_dialog_active = TRUE;
}
static void
color_area_color_changed (PikaContext *context)
{
if (pika_context_get_display (context))
pika_display_grab_focus (pika_context_get_display (context));
}
static void
color_area_tooltip (PikaFgBgEditor *editor,
PikaFgBgTarget target,
GtkTooltip *tooltip,
PikaToolbox *toolbox)
{
PikaUIManager *manager = pika_dock_get_ui_manager (PIKA_DOCK (toolbox));
PikaAction *action = NULL;
const gchar *text = NULL;
switch (target)
{
case PIKA_FG_BG_TARGET_FOREGROUND:
text = _("The active foreground color.\n"
"Click to open the color selection dialog.");
break;
case PIKA_FG_BG_TARGET_BACKGROUND:
text = _("The active background color.\n"
"Click to open the color selection dialog.");
break;
case PIKA_FG_BG_TARGET_SWAP:
action = pika_ui_manager_find_action (manager, "context",
"context-colors-swap");
text = pika_action_get_tooltip (action);
break;
case PIKA_FG_BG_TARGET_DEFAULT:
action = pika_ui_manager_find_action (manager, "context",
"context-colors-default");
text = pika_action_get_tooltip (action);
break;
default:
break;
}
if (text)
{
gchar *markup = NULL;
if (action)
{
gchar **accels = pika_action_get_display_accels (action);
if (accels && accels[0])
{
gchar *escaped = g_markup_escape_text (text, -1);
markup = g_strdup_printf ("%s <b>%s</b>", escaped, accels[0]);
g_free (escaped);
}
g_strfreev (accels);
}
if (markup)
{
gtk_tooltip_set_markup (tooltip, markup);
g_free (markup);
}
else
{
gtk_tooltip_set_text (tooltip, text);
}
}
}