365 lines
12 KiB
C
365 lines
12 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
|
|
*
|
|
* pikacanvasrectangle.c
|
|
* Copyright (C) 2010 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 "libpikabase/pikabase.h"
|
|
#include "libpikamath/pikamath.h"
|
|
|
|
#include "display-types.h"
|
|
|
|
#include "pikacanvasrectangle.h"
|
|
#include "pikadisplayshell.h"
|
|
|
|
|
|
enum
|
|
{
|
|
PROP_0,
|
|
PROP_X,
|
|
PROP_Y,
|
|
PROP_WIDTH,
|
|
PROP_HEIGHT,
|
|
PROP_FILLED
|
|
};
|
|
|
|
|
|
typedef struct _PikaCanvasRectanglePrivate PikaCanvasRectanglePrivate;
|
|
|
|
struct _PikaCanvasRectanglePrivate
|
|
{
|
|
gdouble x;
|
|
gdouble y;
|
|
gdouble width;
|
|
gdouble height;
|
|
gboolean filled;
|
|
};
|
|
|
|
#define GET_PRIVATE(rectangle) \
|
|
((PikaCanvasRectanglePrivate *) pika_canvas_rectangle_get_instance_private ((PikaCanvasRectangle *) (rectangle)))
|
|
|
|
|
|
/* local function prototypes */
|
|
|
|
static void pika_canvas_rectangle_set_property (GObject *object,
|
|
guint property_id,
|
|
const GValue *value,
|
|
GParamSpec *pspec);
|
|
static void pika_canvas_rectangle_get_property (GObject *object,
|
|
guint property_id,
|
|
GValue *value,
|
|
GParamSpec *pspec);
|
|
static void pika_canvas_rectangle_draw (PikaCanvasItem *item,
|
|
cairo_t *cr);
|
|
static cairo_region_t * pika_canvas_rectangle_get_extents (PikaCanvasItem *item);
|
|
|
|
|
|
G_DEFINE_TYPE_WITH_PRIVATE (PikaCanvasRectangle, pika_canvas_rectangle,
|
|
PIKA_TYPE_CANVAS_ITEM)
|
|
|
|
#define parent_class pika_canvas_rectangle_parent_class
|
|
|
|
|
|
static void
|
|
pika_canvas_rectangle_class_init (PikaCanvasRectangleClass *klass)
|
|
{
|
|
GObjectClass *object_class = G_OBJECT_CLASS (klass);
|
|
PikaCanvasItemClass *item_class = PIKA_CANVAS_ITEM_CLASS (klass);
|
|
|
|
object_class->set_property = pika_canvas_rectangle_set_property;
|
|
object_class->get_property = pika_canvas_rectangle_get_property;
|
|
|
|
item_class->draw = pika_canvas_rectangle_draw;
|
|
item_class->get_extents = pika_canvas_rectangle_get_extents;
|
|
|
|
g_object_class_install_property (object_class, PROP_X,
|
|
g_param_spec_double ("x", NULL, NULL,
|
|
-PIKA_MAX_IMAGE_SIZE,
|
|
PIKA_MAX_IMAGE_SIZE, 0,
|
|
PIKA_PARAM_READWRITE));
|
|
|
|
g_object_class_install_property (object_class, PROP_Y,
|
|
g_param_spec_double ("y", NULL, NULL,
|
|
-PIKA_MAX_IMAGE_SIZE,
|
|
PIKA_MAX_IMAGE_SIZE, 0,
|
|
PIKA_PARAM_READWRITE));
|
|
|
|
g_object_class_install_property (object_class, PROP_WIDTH,
|
|
g_param_spec_double ("width", NULL, NULL,
|
|
-PIKA_MAX_IMAGE_SIZE,
|
|
PIKA_MAX_IMAGE_SIZE, 0,
|
|
PIKA_PARAM_READWRITE));
|
|
|
|
g_object_class_install_property (object_class, PROP_HEIGHT,
|
|
g_param_spec_double ("height", NULL, NULL,
|
|
-PIKA_MAX_IMAGE_SIZE,
|
|
PIKA_MAX_IMAGE_SIZE, 0,
|
|
PIKA_PARAM_READWRITE));
|
|
|
|
g_object_class_install_property (object_class, PROP_FILLED,
|
|
g_param_spec_boolean ("filled", NULL, NULL,
|
|
FALSE,
|
|
PIKA_PARAM_READWRITE));
|
|
}
|
|
|
|
static void
|
|
pika_canvas_rectangle_init (PikaCanvasRectangle *rectangle)
|
|
{
|
|
}
|
|
|
|
static void
|
|
pika_canvas_rectangle_set_property (GObject *object,
|
|
guint property_id,
|
|
const GValue *value,
|
|
GParamSpec *pspec)
|
|
{
|
|
PikaCanvasRectanglePrivate *private = GET_PRIVATE (object);
|
|
|
|
switch (property_id)
|
|
{
|
|
case PROP_X:
|
|
private->x = g_value_get_double (value);
|
|
break;
|
|
case PROP_Y:
|
|
private->y = g_value_get_double (value);
|
|
break;
|
|
case PROP_WIDTH:
|
|
private->width = g_value_get_double (value);
|
|
break;
|
|
case PROP_HEIGHT:
|
|
private->height = g_value_get_double (value);
|
|
break;
|
|
case PROP_FILLED:
|
|
private->filled = g_value_get_boolean (value);
|
|
break;
|
|
|
|
default:
|
|
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void
|
|
pika_canvas_rectangle_get_property (GObject *object,
|
|
guint property_id,
|
|
GValue *value,
|
|
GParamSpec *pspec)
|
|
{
|
|
PikaCanvasRectanglePrivate *private = GET_PRIVATE (object);
|
|
|
|
switch (property_id)
|
|
{
|
|
case PROP_X:
|
|
g_value_set_double (value, private->x);
|
|
break;
|
|
case PROP_Y:
|
|
g_value_set_double (value, private->y);
|
|
break;
|
|
case PROP_WIDTH:
|
|
g_value_set_double (value, private->width);
|
|
break;
|
|
case PROP_HEIGHT:
|
|
g_value_set_double (value, private->height);
|
|
break;
|
|
case PROP_FILLED:
|
|
g_value_set_boolean (value, private->filled);
|
|
break;
|
|
|
|
default:
|
|
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void
|
|
pika_canvas_rectangle_transform (PikaCanvasItem *item,
|
|
gdouble *x,
|
|
gdouble *y,
|
|
gdouble *w,
|
|
gdouble *h)
|
|
{
|
|
PikaCanvasRectanglePrivate *private = GET_PRIVATE (item);
|
|
gdouble x1, y1;
|
|
gdouble x2, y2;
|
|
|
|
pika_canvas_item_transform_xy_f (item,
|
|
MIN (private->x,
|
|
private->x + private->width),
|
|
MIN (private->y,
|
|
private->y + private->height),
|
|
&x1, &y1);
|
|
pika_canvas_item_transform_xy_f (item,
|
|
MAX (private->x,
|
|
private->x + private->width),
|
|
MAX (private->y,
|
|
private->y + private->height),
|
|
&x2, &y2);
|
|
|
|
x1 = floor (x1);
|
|
y1 = floor (y1);
|
|
x2 = ceil (x2);
|
|
y2 = ceil (y2);
|
|
|
|
if (private->filled)
|
|
{
|
|
*x = x1;
|
|
*y = y1;
|
|
*w = x2 - x1;
|
|
*h = y2 - y1;
|
|
}
|
|
else
|
|
{
|
|
*x = x1 + 0.5;
|
|
*y = y1 + 0.5;
|
|
*w = x2 - 0.5 - *x;
|
|
*h = y2 - 0.5 - *y;
|
|
|
|
*w = MAX (0.0, *w);
|
|
*h = MAX (0.0, *h);
|
|
}
|
|
}
|
|
|
|
static void
|
|
pika_canvas_rectangle_draw (PikaCanvasItem *item,
|
|
cairo_t *cr)
|
|
{
|
|
PikaCanvasRectanglePrivate *private = GET_PRIVATE (item);
|
|
gdouble x, y;
|
|
gdouble w, h;
|
|
|
|
pika_canvas_rectangle_transform (item, &x, &y, &w, &h);
|
|
|
|
cairo_rectangle (cr, x, y, w, h);
|
|
|
|
if (private->filled)
|
|
_pika_canvas_item_fill (item, cr);
|
|
else
|
|
_pika_canvas_item_stroke (item, cr);
|
|
}
|
|
|
|
static cairo_region_t *
|
|
pika_canvas_rectangle_get_extents (PikaCanvasItem *item)
|
|
{
|
|
PikaCanvasRectanglePrivate *private = GET_PRIVATE (item);
|
|
cairo_rectangle_int_t rectangle;
|
|
gdouble x, y;
|
|
gdouble w, h;
|
|
|
|
pika_canvas_rectangle_transform (item, &x, &y, &w, &h);
|
|
|
|
if (private->filled)
|
|
{
|
|
rectangle.x = floor (x - 1.0);
|
|
rectangle.y = floor (y - 1.0);
|
|
rectangle.width = ceil (w + 2.0);
|
|
rectangle.height = ceil (h + 2.0);
|
|
|
|
return cairo_region_create_rectangle (&rectangle);
|
|
}
|
|
else if (w > 64 && h > 64)
|
|
{
|
|
cairo_region_t *region;
|
|
|
|
/* left */
|
|
rectangle.x = floor (x - 1.5);
|
|
rectangle.y = floor (y - 1.5);
|
|
rectangle.width = 3.0;
|
|
rectangle.height = ceil (h + 3.0);
|
|
|
|
region = cairo_region_create_rectangle (&rectangle);
|
|
|
|
/* right */
|
|
rectangle.x = floor (x + w - 1.5);
|
|
|
|
cairo_region_union_rectangle (region, &rectangle);
|
|
|
|
/* top */
|
|
rectangle.x = floor (x - 1.5);
|
|
rectangle.y = floor (y - 1.5);
|
|
rectangle.width = ceil (w + 3.0);
|
|
rectangle.height = 3.0;
|
|
|
|
cairo_region_union_rectangle (region, &rectangle);
|
|
|
|
/* bottom */
|
|
rectangle.y = floor (y + h - 1.5);
|
|
|
|
cairo_region_union_rectangle (region, &rectangle);
|
|
|
|
return region;
|
|
}
|
|
else
|
|
{
|
|
rectangle.x = floor (x - 1.5);
|
|
rectangle.y = floor (y - 1.5);
|
|
rectangle.width = ceil (w + 3.0);
|
|
rectangle.height = ceil (h + 3.0);
|
|
|
|
return cairo_region_create_rectangle (&rectangle);
|
|
}
|
|
}
|
|
|
|
PikaCanvasItem *
|
|
pika_canvas_rectangle_new (PikaDisplayShell *shell,
|
|
gdouble x,
|
|
gdouble y,
|
|
gdouble width,
|
|
gdouble height,
|
|
gboolean filled)
|
|
{
|
|
g_return_val_if_fail (PIKA_IS_DISPLAY_SHELL (shell), NULL);
|
|
|
|
return g_object_new (PIKA_TYPE_CANVAS_RECTANGLE,
|
|
"shell", shell,
|
|
"x", x,
|
|
"y", y,
|
|
"width", width,
|
|
"height", height,
|
|
"filled", filled,
|
|
NULL);
|
|
}
|
|
|
|
void
|
|
pika_canvas_rectangle_set (PikaCanvasItem *rectangle,
|
|
gdouble x,
|
|
gdouble y,
|
|
gdouble width,
|
|
gdouble height)
|
|
{
|
|
g_return_if_fail (PIKA_IS_CANVAS_RECTANGLE (rectangle));
|
|
|
|
pika_canvas_item_begin_change (rectangle);
|
|
|
|
g_object_set (rectangle,
|
|
"x", x,
|
|
"y", y,
|
|
"width", width,
|
|
"height", height,
|
|
NULL);
|
|
|
|
pika_canvas_item_end_change (rectangle);
|
|
}
|