540 lines
16 KiB
C
540 lines
16 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
|
|
*
|
|
* PikaOverlayBox
|
|
* Copyright (C) 2009 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 <gtk/gtk.h>
|
|
|
|
#include "widgets-types.h"
|
|
|
|
#include "pikaoverlaybox.h"
|
|
#include "pikaoverlaychild.h"
|
|
|
|
|
|
/* local function prototypes */
|
|
|
|
static void pika_overlay_box_set_property (GObject *object,
|
|
guint property_id,
|
|
const GValue *value,
|
|
GParamSpec *pspec);
|
|
static void pika_overlay_box_get_property (GObject *object,
|
|
guint property_id,
|
|
GValue *value,
|
|
GParamSpec *pspec);
|
|
|
|
static void pika_overlay_box_realize (GtkWidget *widget);
|
|
static void pika_overlay_box_unrealize (GtkWidget *widget);
|
|
static void pika_overlay_box_get_preferred_width (GtkWidget *widget,
|
|
gint *minimum_width,
|
|
gint *natural_width);
|
|
static void pika_overlay_box_get_preferred_height(GtkWidget *widget,
|
|
gint *minimum_height,
|
|
gint *natural_height);
|
|
static void pika_overlay_box_size_allocate (GtkWidget *widget,
|
|
GtkAllocation *allocation);
|
|
static gboolean pika_overlay_box_draw (GtkWidget *widget,
|
|
cairo_t *cr);
|
|
static gboolean pika_overlay_box_damage (GtkWidget *widget,
|
|
GdkEventExpose *event);
|
|
|
|
static void pika_overlay_box_add (GtkContainer *container,
|
|
GtkWidget *widget);
|
|
static void pika_overlay_box_remove (GtkContainer *container,
|
|
GtkWidget *widget);
|
|
static void pika_overlay_box_forall (GtkContainer *container,
|
|
gboolean include_internals,
|
|
GtkCallback callback,
|
|
gpointer callback_data);
|
|
static GType pika_overlay_box_child_type (GtkContainer *container);
|
|
|
|
static GdkWindow * pika_overlay_box_pick_embedded_child (GdkWindow *window,
|
|
gdouble x,
|
|
gdouble y,
|
|
PikaOverlayBox *box);
|
|
|
|
|
|
G_DEFINE_TYPE (PikaOverlayBox, pika_overlay_box, GTK_TYPE_CONTAINER)
|
|
|
|
#define parent_class pika_overlay_box_parent_class
|
|
|
|
|
|
static void
|
|
pika_overlay_box_class_init (PikaOverlayBoxClass *klass)
|
|
{
|
|
GObjectClass *object_class = G_OBJECT_CLASS (klass);
|
|
GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (klass);
|
|
GtkContainerClass *container_class = GTK_CONTAINER_CLASS (klass);
|
|
|
|
object_class->set_property = pika_overlay_box_set_property;
|
|
object_class->get_property = pika_overlay_box_get_property;
|
|
|
|
widget_class->realize = pika_overlay_box_realize;
|
|
widget_class->unrealize = pika_overlay_box_unrealize;
|
|
widget_class->get_preferred_width = pika_overlay_box_get_preferred_width;
|
|
widget_class->get_preferred_height = pika_overlay_box_get_preferred_height;
|
|
widget_class->size_allocate = pika_overlay_box_size_allocate;
|
|
widget_class->draw = pika_overlay_box_draw;
|
|
|
|
g_signal_override_class_handler ("damage-event",
|
|
PIKA_TYPE_OVERLAY_BOX,
|
|
G_CALLBACK (pika_overlay_box_damage));
|
|
|
|
container_class->add = pika_overlay_box_add;
|
|
container_class->remove = pika_overlay_box_remove;
|
|
container_class->forall = pika_overlay_box_forall;
|
|
container_class->child_type = pika_overlay_box_child_type;
|
|
}
|
|
|
|
static void
|
|
pika_overlay_box_init (PikaOverlayBox *box)
|
|
{
|
|
gtk_widget_set_has_window (GTK_WIDGET (box), TRUE);
|
|
}
|
|
|
|
static void
|
|
pika_overlay_box_set_property (GObject *object,
|
|
guint property_id,
|
|
const GValue *value,
|
|
GParamSpec *pspec)
|
|
{
|
|
switch (property_id)
|
|
{
|
|
default:
|
|
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void
|
|
pika_overlay_box_get_property (GObject *object,
|
|
guint property_id,
|
|
GValue *value,
|
|
GParamSpec *pspec)
|
|
{
|
|
switch (property_id)
|
|
{
|
|
default:
|
|
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void
|
|
pika_overlay_box_realize (GtkWidget *widget)
|
|
{
|
|
PikaOverlayBox *box = PIKA_OVERLAY_BOX (widget);
|
|
GtkAllocation allocation;
|
|
GdkWindowAttr attributes;
|
|
gint attributes_mask;
|
|
GList *list;
|
|
|
|
gtk_widget_set_realized (widget, TRUE);
|
|
|
|
gtk_widget_get_allocation (widget, &allocation);
|
|
|
|
attributes.x = allocation.x;
|
|
attributes.y = allocation.y;
|
|
attributes.width = allocation.width;
|
|
attributes.height = allocation.height;
|
|
attributes.window_type = GDK_WINDOW_CHILD;
|
|
attributes.wclass = GDK_INPUT_OUTPUT;
|
|
attributes.visual = gtk_widget_get_visual (widget);
|
|
attributes.event_mask = gtk_widget_get_events (widget);
|
|
|
|
attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL;
|
|
|
|
gtk_widget_set_window (widget,
|
|
gdk_window_new (gtk_widget_get_parent_window (widget),
|
|
&attributes, attributes_mask));
|
|
gdk_window_set_user_data (gtk_widget_get_window (widget), widget);
|
|
|
|
g_signal_connect (gtk_widget_get_window (widget), "pick-embedded-child",
|
|
G_CALLBACK (pika_overlay_box_pick_embedded_child),
|
|
widget);
|
|
|
|
for (list = box->children; list; list = g_list_next (list))
|
|
pika_overlay_child_realize (box, list->data);
|
|
}
|
|
|
|
static void
|
|
pika_overlay_box_unrealize (GtkWidget *widget)
|
|
{
|
|
PikaOverlayBox *box = PIKA_OVERLAY_BOX (widget);
|
|
GList *list;
|
|
|
|
for (list = box->children; list; list = g_list_next (list))
|
|
pika_overlay_child_unrealize (box, list->data);
|
|
|
|
GTK_WIDGET_CLASS (parent_class)->unrealize (widget);
|
|
}
|
|
|
|
static void
|
|
pika_overlay_box_get_preferred_width (GtkWidget *widget,
|
|
gint *minimum_width,
|
|
gint *natural_width)
|
|
{
|
|
PikaOverlayBox *box = PIKA_OVERLAY_BOX (widget);
|
|
GList *list;
|
|
|
|
*minimum_width = *natural_width = 0;
|
|
|
|
for (list = box->children; list; list = g_list_next (list))
|
|
{
|
|
gint minimum;
|
|
gint natural;
|
|
|
|
pika_overlay_child_get_preferred_width (box, list->data,
|
|
&minimum, &natural);
|
|
|
|
*minimum_width = MAX (*minimum_width, minimum);
|
|
*natural_width = MAX (*natural_width, natural);
|
|
}
|
|
|
|
*minimum_width = 0;
|
|
|
|
*minimum_width +=
|
|
2 * gtk_container_get_border_width (GTK_CONTAINER (widget)) + 1;
|
|
|
|
*natural_width +=
|
|
2 * gtk_container_get_border_width (GTK_CONTAINER (widget)) + 1;
|
|
}
|
|
|
|
static void
|
|
pika_overlay_box_get_preferred_height (GtkWidget *widget,
|
|
gint *minimum_height,
|
|
gint *natural_height)
|
|
{
|
|
PikaOverlayBox *box = PIKA_OVERLAY_BOX (widget);
|
|
GList *list;
|
|
|
|
*minimum_height = *natural_height = 0;
|
|
|
|
for (list = box->children; list; list = g_list_next (list))
|
|
{
|
|
gint minimum;
|
|
gint natural;
|
|
|
|
pika_overlay_child_get_preferred_height (box, list->data,
|
|
&minimum, &natural);
|
|
|
|
*minimum_height = MAX (*minimum_height, minimum);
|
|
*natural_height = MAX (*natural_height, natural);
|
|
}
|
|
|
|
*minimum_height = 0;
|
|
|
|
*minimum_height +=
|
|
2 * gtk_container_get_border_width (GTK_CONTAINER (widget)) + 1;
|
|
|
|
*natural_height +=
|
|
2 * gtk_container_get_border_width (GTK_CONTAINER (widget)) + 1;
|
|
}
|
|
|
|
static void
|
|
pika_overlay_box_size_allocate (GtkWidget *widget,
|
|
GtkAllocation *allocation)
|
|
{
|
|
PikaOverlayBox *box = PIKA_OVERLAY_BOX (widget);
|
|
GList *list;
|
|
|
|
GTK_WIDGET_CLASS (parent_class)->size_allocate (widget, allocation);
|
|
|
|
for (list = box->children; list; list = g_list_next (list))
|
|
pika_overlay_child_size_allocate (box, list->data);
|
|
}
|
|
|
|
static gboolean
|
|
pika_overlay_box_draw (GtkWidget *widget,
|
|
cairo_t *cr)
|
|
{
|
|
PikaOverlayBox *box = PIKA_OVERLAY_BOX (widget);
|
|
GList *list;
|
|
|
|
for (list = box->children; list; list = g_list_next (list))
|
|
{
|
|
if (pika_overlay_child_draw (box, list->data, cr))
|
|
return FALSE;
|
|
}
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
static gboolean
|
|
pika_overlay_box_damage (GtkWidget *widget,
|
|
GdkEventExpose *event)
|
|
{
|
|
PikaOverlayBox *box = PIKA_OVERLAY_BOX (widget);
|
|
GList *list;
|
|
|
|
for (list = box->children; list; list = g_list_next (list))
|
|
{
|
|
if (pika_overlay_child_damage (box, list->data, event))
|
|
return FALSE;
|
|
}
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
static void
|
|
pika_overlay_box_add (GtkContainer *container,
|
|
GtkWidget *widget)
|
|
{
|
|
pika_overlay_box_add_child (PIKA_OVERLAY_BOX (container), widget, 0.5, 0.5);
|
|
}
|
|
|
|
static void
|
|
pika_overlay_box_remove (GtkContainer *container,
|
|
GtkWidget *widget)
|
|
{
|
|
PikaOverlayBox *box = PIKA_OVERLAY_BOX (container);
|
|
PikaOverlayChild *child = pika_overlay_child_find (box, widget);
|
|
|
|
if (child)
|
|
{
|
|
if (gtk_widget_get_visible (widget))
|
|
pika_overlay_child_invalidate (box, child);
|
|
|
|
box->children = g_list_remove (box->children, child);
|
|
|
|
pika_overlay_child_free (box, child);
|
|
}
|
|
}
|
|
|
|
static void
|
|
pika_overlay_box_forall (GtkContainer *container,
|
|
gboolean include_internals,
|
|
GtkCallback callback,
|
|
gpointer callback_data)
|
|
{
|
|
PikaOverlayBox *box = PIKA_OVERLAY_BOX (container);
|
|
GList *list;
|
|
|
|
list = box->children;
|
|
while (list)
|
|
{
|
|
PikaOverlayChild *child = list->data;
|
|
|
|
list = list->next;
|
|
|
|
(* callback) (child->widget, callback_data);
|
|
}
|
|
}
|
|
|
|
static GType
|
|
pika_overlay_box_child_type (GtkContainer *container)
|
|
{
|
|
return GTK_TYPE_WIDGET;
|
|
}
|
|
|
|
static GdkWindow *
|
|
pika_overlay_box_pick_embedded_child (GdkWindow *parent,
|
|
gdouble parent_x,
|
|
gdouble parent_y,
|
|
PikaOverlayBox *box)
|
|
{
|
|
GList *list;
|
|
|
|
for (list = box->children; list; list = g_list_next (list))
|
|
{
|
|
PikaOverlayChild *child = list->data;
|
|
|
|
if (pika_overlay_child_pick (box, child, parent_x, parent_y))
|
|
return child->window;
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
|
|
/* public functions */
|
|
|
|
/**
|
|
* pika_overlay_box_new:
|
|
*
|
|
* Creates a new #PikaOverlayBox widget.
|
|
*
|
|
* Returns: a new #PikaOverlayBox widget
|
|
**/
|
|
GtkWidget *
|
|
pika_overlay_box_new (void)
|
|
{
|
|
return g_object_new (PIKA_TYPE_OVERLAY_BOX, NULL);
|
|
}
|
|
|
|
void
|
|
pika_overlay_box_add_child (PikaOverlayBox *box,
|
|
GtkWidget *widget,
|
|
gdouble xalign,
|
|
gdouble yalign)
|
|
{
|
|
PikaOverlayChild *child;
|
|
|
|
g_return_if_fail (PIKA_IS_OVERLAY_BOX (box));
|
|
g_return_if_fail (GTK_IS_WIDGET (widget));
|
|
|
|
child = pika_overlay_child_new (box, widget, xalign, yalign, 0.0, 0.85);
|
|
|
|
box->children = g_list_append (box->children, child);
|
|
}
|
|
|
|
void
|
|
pika_overlay_box_set_child_alignment (PikaOverlayBox *box,
|
|
GtkWidget *widget,
|
|
gdouble xalign,
|
|
gdouble yalign)
|
|
{
|
|
PikaOverlayChild *child = pika_overlay_child_find (box, widget);
|
|
|
|
if (child)
|
|
{
|
|
xalign = CLAMP (xalign, 0.0, 1.0);
|
|
yalign = CLAMP (yalign, 0.0, 1.0);
|
|
|
|
if (child->has_position ||
|
|
child->xalign != xalign ||
|
|
child->yalign != yalign)
|
|
{
|
|
pika_overlay_child_invalidate (box, child);
|
|
|
|
child->has_position = FALSE;
|
|
child->xalign = xalign;
|
|
child->yalign = yalign;
|
|
|
|
gtk_widget_queue_resize (widget);
|
|
}
|
|
}
|
|
}
|
|
|
|
void
|
|
pika_overlay_box_set_child_position (PikaOverlayBox *box,
|
|
GtkWidget *widget,
|
|
gdouble x,
|
|
gdouble y)
|
|
{
|
|
PikaOverlayChild *child = pika_overlay_child_find (box, widget);
|
|
|
|
if (child)
|
|
{
|
|
if (! child->has_position ||
|
|
child->x != x ||
|
|
child->y != y)
|
|
{
|
|
pika_overlay_child_invalidate (box, child);
|
|
|
|
child->has_position = TRUE;
|
|
child->x = x;
|
|
child->y = y;
|
|
|
|
gtk_widget_queue_resize (widget);
|
|
}
|
|
}
|
|
}
|
|
|
|
void
|
|
pika_overlay_box_set_child_angle (PikaOverlayBox *box,
|
|
GtkWidget *widget,
|
|
gdouble angle)
|
|
{
|
|
PikaOverlayChild *child = pika_overlay_child_find (box, widget);
|
|
|
|
if (child)
|
|
{
|
|
if (child->angle != angle)
|
|
{
|
|
pika_overlay_child_invalidate (box, child);
|
|
|
|
child->angle = angle;
|
|
|
|
gtk_widget_queue_draw (widget);
|
|
}
|
|
}
|
|
}
|
|
|
|
void
|
|
pika_overlay_box_set_child_opacity (PikaOverlayBox *box,
|
|
GtkWidget *widget,
|
|
gdouble opacity)
|
|
{
|
|
PikaOverlayChild *child = pika_overlay_child_find (box, widget);
|
|
|
|
if (child)
|
|
{
|
|
opacity = CLAMP (opacity, 0.0, 1.0);
|
|
|
|
if (child->opacity != opacity)
|
|
{
|
|
child->opacity = opacity;
|
|
|
|
gtk_widget_queue_draw (widget);
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* pika_overlay_box_scroll:
|
|
* @box: the #PikaOverlayBox widget to scroll.
|
|
* @offset_x: the x scroll amount.
|
|
* @offset_y: the y scroll amount.
|
|
*
|
|
* Scrolls the box using gdk_window_scroll(), taking care of properly
|
|
* handling overlay children.
|
|
**/
|
|
void
|
|
pika_overlay_box_scroll (PikaOverlayBox *box,
|
|
gint offset_x,
|
|
gint offset_y)
|
|
{
|
|
GtkWidget *widget;
|
|
GdkWindow *window;
|
|
GList *list;
|
|
|
|
g_return_if_fail (PIKA_IS_OVERLAY_BOX (box));
|
|
|
|
widget = GTK_WIDGET (box);
|
|
|
|
/* bug 761118 */
|
|
if (! gtk_widget_get_realized (widget))
|
|
return;
|
|
|
|
window = gtk_widget_get_window (widget);
|
|
|
|
/* Undraw all overlays */
|
|
for (list = box->children; list; list = g_list_next (list))
|
|
{
|
|
PikaOverlayChild *child = list->data;
|
|
|
|
pika_overlay_child_invalidate (box, child);
|
|
}
|
|
|
|
gdk_window_scroll (window, offset_x, offset_y);
|
|
|
|
/* Re-draw all overlays */
|
|
for (list = box->children; list; list = g_list_next (list))
|
|
{
|
|
PikaOverlayChild *child = list->data;
|
|
|
|
pika_overlay_child_invalidate (box, child);
|
|
}
|
|
}
|
