PIKApp/app/widgets/pikaview-popup.c

250 lines
8.0 KiB
C

/* 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
*
* pikaview-popup.c
* Copyright (C) 2003-2006 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 "libpikawidgets/pikawidgets.h"
#include "widgets-types.h"
#include "core/pikacontext.h"
#include "core/pikaviewable.h"
#include "pikaview.h"
#include "pikaviewrenderer.h"
#include "pikaview-popup.h"
#define VIEW_POPUP_DELAY 150
typedef struct _PikaViewPopup PikaViewPopup;
struct _PikaViewPopup
{
GtkWidget *widget;
PikaContext *context;
PikaViewable *viewable;
gint popup_width;
gint popup_height;
gboolean dot_for_dot;
gint button;
gint button_x;
gint button_y;
guint timeout_id;
GtkWidget *popup;
};
/* local function prototypes */
static void pika_view_popup_hide (PikaViewPopup *popup);
static gboolean pika_view_popup_button_release (GtkWidget *widget,
GdkEventButton *bevent,
PikaViewPopup *popup);
static void pika_view_popup_unmap (GtkWidget *widget,
PikaViewPopup *popup);
static void pika_view_popup_drag_begin (GtkWidget *widget,
GdkDragContext *context,
PikaViewPopup *popup);
static gboolean pika_view_popup_timeout (PikaViewPopup *popup);
/* public functions */
gboolean
pika_view_popup_show (GtkWidget *widget,
GdkEventButton *bevent,
PikaContext *context,
PikaViewable *viewable,
gint view_width,
gint view_height,
gboolean dot_for_dot)
{
PikaViewPopup *popup;
gint popup_width;
gint popup_height;
g_return_val_if_fail (GTK_IS_WIDGET (widget), FALSE);
g_return_val_if_fail (bevent != NULL, FALSE);
g_return_val_if_fail (context == NULL || PIKA_IS_CONTEXT (context), FALSE);
g_return_val_if_fail (PIKA_IS_VIEWABLE (viewable), FALSE);
if (! pika_viewable_get_popup_size (viewable,
view_width,
view_height,
dot_for_dot,
&popup_width,
&popup_height))
return FALSE;
popup = g_slice_new0 (PikaViewPopup);
popup->widget = widget;
popup->context = context;
popup->viewable = viewable;
popup->popup_width = popup_width;
popup->popup_height = popup_height;
popup->dot_for_dot = dot_for_dot;
popup->button = bevent->button;
popup->button_x = bevent->x_root;
popup->button_y = bevent->y_root;
g_signal_connect (widget, "button-release-event",
G_CALLBACK (pika_view_popup_button_release),
popup);
g_signal_connect (widget, "unmap",
G_CALLBACK (pika_view_popup_unmap),
popup);
g_signal_connect (widget, "drag-begin",
G_CALLBACK (pika_view_popup_drag_begin),
popup);
popup->timeout_id = g_timeout_add (VIEW_POPUP_DELAY,
(GSourceFunc) pika_view_popup_timeout,
popup);
g_object_set_data_full (G_OBJECT (widget), "pika-view-popup", popup,
(GDestroyNotify) pika_view_popup_hide);
gtk_grab_add (widget);
return TRUE;
}
/* private functions */
static void
pika_view_popup_hide (PikaViewPopup *popup)
{
if (popup->timeout_id)
g_source_remove (popup->timeout_id);
if (popup->popup)
gtk_widget_destroy (popup->popup);
g_signal_handlers_disconnect_by_func (popup->widget,
pika_view_popup_button_release,
popup);
g_signal_handlers_disconnect_by_func (popup->widget,
pika_view_popup_unmap,
popup);
g_signal_handlers_disconnect_by_func (popup->widget,
pika_view_popup_drag_begin,
popup);
gtk_grab_remove (popup->widget);
g_slice_free (PikaViewPopup, popup);
}
static gboolean
pika_view_popup_button_release (GtkWidget *widget,
GdkEventButton *bevent,
PikaViewPopup *popup)
{
if (bevent->button == popup->button)
g_object_set_data (G_OBJECT (popup->widget), "pika-view-popup", NULL);
return FALSE;
}
static void
pika_view_popup_unmap (GtkWidget *widget,
PikaViewPopup *popup)
{
g_object_set_data (G_OBJECT (popup->widget), "pika-view-popup", NULL);
}
static void
pika_view_popup_drag_begin (GtkWidget *widget,
GdkDragContext *context,
PikaViewPopup *popup)
{
g_object_set_data (G_OBJECT (popup->widget), "pika-view-popup", NULL);
}
static gboolean
pika_view_popup_timeout (PikaViewPopup *popup)
{
GtkWidget *window;
GtkWidget *frame;
GtkWidget *view;
GdkDisplay *display;
GdkRectangle workarea;
gint x;
gint y;
popup->timeout_id = 0;
window = gtk_window_new (GTK_WINDOW_POPUP);
gtk_window_set_resizable (GTK_WINDOW (window), FALSE);
gtk_window_set_screen (GTK_WINDOW (window),
gtk_widget_get_screen (popup->widget));
gtk_window_set_transient_for (GTK_WINDOW (window),
GTK_WINDOW (gtk_widget_get_toplevel (popup->widget)));
frame = gtk_frame_new (NULL);
gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_OUT);
gtk_container_add (GTK_CONTAINER (window), frame);
gtk_widget_show (frame);
view = pika_view_new_full (popup->context,
popup->viewable,
popup->popup_width,
popup->popup_height,
0, TRUE, FALSE, FALSE);
pika_view_renderer_set_dot_for_dot (PIKA_VIEW (view)->renderer,
popup->dot_for_dot);
gtk_container_add (GTK_CONTAINER (frame), view);
gtk_widget_show (view);
display = gtk_widget_get_display (popup->widget);
gdk_monitor_get_workarea (gdk_display_get_monitor_at_point (display,
popup->button_x,
popup->button_y),
&workarea);
x = popup->button_x - (popup->popup_width / 2);
y = popup->button_y - (popup->popup_height / 2);
x = CLAMP (x, workarea.x, workarea.x + workarea.width - popup->popup_width);
y = CLAMP (y, workarea.y, workarea.y + workarea.height - popup->popup_height);
gtk_window_move (GTK_WINDOW (window), x, y);
gtk_widget_show (window);
popup->popup = window;
return FALSE;
}