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gimp/app/display/gimpcanvasprogress.c

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/* GIMP - The GNU Image Manipulation Program
* Copyright (C) 1995 Spencer Kimball and Peter Mattis
*
* gimpcanvasprogress.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 <http://www.gnu.org/licenses/>.
*/
#include "config.h"
#include <gegl.h>
#include <gtk/gtk.h>
#include "libgimpbase/gimpbase.h"
#include "libgimpmath/gimpmath.h"
#include "display-types.h"
#include "core/gimpprogress.h"
#include "gimpcanvas.h"
#include "gimpcanvas-style.h"
#include "gimpcanvasitem-utils.h"
#include "gimpcanvasprogress.h"
#include "gimpdisplayshell.h"
#define BORDER 5
#define RADIUS 20
enum
{
PROP_0,
PROP_ANCHOR,
PROP_X,
PROP_Y
};
typedef struct _GimpCanvasProgressPrivate GimpCanvasProgressPrivate;
struct _GimpCanvasProgressPrivate
{
GimpHandleAnchor anchor;
gdouble x;
gdouble y;
gchar *text;
gdouble value;
};
#define GET_PRIVATE(progress) \
G_TYPE_INSTANCE_GET_PRIVATE (progress, \
GIMP_TYPE_CANVAS_PROGRESS, \
GimpCanvasProgressPrivate)
/* local function prototypes */
static void gimp_canvas_progress_iface_init (GimpProgressInterface *iface);
static void gimp_canvas_progress_finalize (GObject *object);
static void gimp_canvas_progress_set_property (GObject *object,
guint property_id,
const GValue *value,
GParamSpec *pspec);
static void gimp_canvas_progress_get_property (GObject *object,
guint property_id,
GValue *value,
GParamSpec *pspec);
static void gimp_canvas_progress_draw (GimpCanvasItem *item,
cairo_t *cr);
static cairo_region_t * gimp_canvas_progress_get_extents (GimpCanvasItem *item);
static GimpProgress * gimp_canvas_progress_start (GimpProgress *progress,
const gchar *message,
gboolean cancelable);
static void gimp_canvas_progress_end (GimpProgress *progress);
static gboolean gimp_canvas_progress_is_active (GimpProgress *progress);
static void gimp_canvas_progress_set_text (GimpProgress *progress,
const gchar *message);
static void gimp_canvas_progress_set_value (GimpProgress *progress,
gdouble percentage);
static gdouble gimp_canvas_progress_get_value (GimpProgress *progress);
static void gimp_canvas_progress_pulse (GimpProgress *progress);
static gboolean gimp_canvas_progress_message (GimpProgress *progress,
Gimp *gimp,
GimpMessageSeverity severity,
const gchar *domain,
const gchar *message);
G_DEFINE_TYPE_WITH_CODE (GimpCanvasProgress, gimp_canvas_progress,
GIMP_TYPE_CANVAS_ITEM,
G_IMPLEMENT_INTERFACE (GIMP_TYPE_PROGRESS,
gimp_canvas_progress_iface_init))
#define parent_class gimp_canvas_progress_parent_class
static void
gimp_canvas_progress_class_init (GimpCanvasProgressClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
GimpCanvasItemClass *item_class = GIMP_CANVAS_ITEM_CLASS (klass);
object_class->finalize = gimp_canvas_progress_finalize;
object_class->set_property = gimp_canvas_progress_set_property;
object_class->get_property = gimp_canvas_progress_get_property;
item_class->draw = gimp_canvas_progress_draw;
item_class->get_extents = gimp_canvas_progress_get_extents;
g_object_class_install_property (object_class, PROP_ANCHOR,
g_param_spec_enum ("anchor", NULL, NULL,
GIMP_TYPE_HANDLE_ANCHOR,
GIMP_HANDLE_ANCHOR_CENTER,
GIMP_PARAM_READWRITE));
g_object_class_install_property (object_class, PROP_X,
g_param_spec_double ("x", NULL, NULL,
-GIMP_MAX_IMAGE_SIZE,
GIMP_MAX_IMAGE_SIZE, 0,
GIMP_PARAM_READWRITE));
g_object_class_install_property (object_class, PROP_Y,
g_param_spec_double ("y", NULL, NULL,
-GIMP_MAX_IMAGE_SIZE,
GIMP_MAX_IMAGE_SIZE, 0,
GIMP_PARAM_READWRITE));
g_type_class_add_private (klass, sizeof (GimpCanvasProgressPrivate));
}
static void
gimp_canvas_progress_iface_init (GimpProgressInterface *iface)
{
iface->start = gimp_canvas_progress_start;
iface->end = gimp_canvas_progress_end;
iface->is_active = gimp_canvas_progress_is_active;
iface->set_text = gimp_canvas_progress_set_text;
iface->set_value = gimp_canvas_progress_set_value;
iface->get_value = gimp_canvas_progress_get_value;
iface->pulse = gimp_canvas_progress_pulse;
iface->message = gimp_canvas_progress_message;
}
static void
gimp_canvas_progress_init (GimpCanvasProgress *progress)
{
}
static void
gimp_canvas_progress_finalize (GObject *object)
{
GimpCanvasProgressPrivate *private = GET_PRIVATE (object);
if (private->text)
{
g_free (private->text);
private->text = NULL;
}
G_OBJECT_CLASS (parent_class)->finalize (object);
}
static void
gimp_canvas_progress_set_property (GObject *object,
guint property_id,
const GValue *value,
GParamSpec *pspec)
{
GimpCanvasProgressPrivate *private = GET_PRIVATE (object);
switch (property_id)
{
case PROP_ANCHOR:
private->anchor = g_value_get_enum (value);
break;
case PROP_X:
private->x = g_value_get_double (value);
break;
case PROP_Y:
private->y = g_value_get_double (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
break;
}
}
static void
gimp_canvas_progress_get_property (GObject *object,
guint property_id,
GValue *value,
GParamSpec *pspec)
{
GimpCanvasProgressPrivate *private = GET_PRIVATE (object);
switch (property_id)
{
case PROP_ANCHOR:
g_value_set_enum (value, private->anchor);
break;
case PROP_X:
g_value_set_double (value, private->x);
break;
case PROP_Y:
g_value_set_double (value, private->y);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
break;
}
}
static PangoLayout *
gimp_canvas_progress_transform (GimpCanvasItem *item,
gdouble *x,
gdouble *y,
gint *width,
gint *height)
{
GimpCanvasProgressPrivate *private = GET_PRIVATE (item);
GtkWidget *canvas = gimp_canvas_item_get_canvas (item);
PangoLayout *layout;
layout = gimp_canvas_get_layout (GIMP_CANVAS (canvas), "%s",
private->text);
pango_layout_get_pixel_size (layout, width, height);
*width += 2 * BORDER;
*height += 3 * BORDER + 2 * RADIUS;
gimp_canvas_item_transform_xy_f (item,
private->x, private->y,
x, y);
gimp_canvas_item_shift_to_north_west (private->anchor,
*x, *y,
*width,
*height,
x, y);
*x = floor (*x);
*y = floor (*y);
return layout;
}
static void
gimp_canvas_progress_draw (GimpCanvasItem *item,
cairo_t *cr)
{
GimpCanvasProgressPrivate *private = GET_PRIVATE (item);
GtkWidget *canvas = gimp_canvas_item_get_canvas (item);
gdouble x, y;
gint width, height;
gimp_canvas_progress_transform (item, &x, &y, &width, &height);
cairo_move_to (cr, x, y);
cairo_line_to (cr, x + width, y);
cairo_line_to (cr, x + width, y + height - BORDER - 2 * RADIUS);
cairo_line_to (cr, x + 2 * BORDER + 2 * RADIUS, y + height - BORDER - 2 * RADIUS);
cairo_arc (cr, x + BORDER + RADIUS, y + height - BORDER - RADIUS,
BORDER + RADIUS, 0, G_PI);
cairo_close_path (cr);
_gimp_canvas_item_fill (item, cr);
cairo_move_to (cr, x + BORDER, y + BORDER);
cairo_set_source_rgba (cr, 0.0, 0.0, 0.0, 1.0);
pango_cairo_show_layout (cr,
gimp_canvas_get_layout (GIMP_CANVAS (canvas),
"%s", private->text));
gimp_canvas_set_tool_bg_style (gimp_canvas_item_get_canvas (item), cr);
cairo_arc (cr, x + BORDER + RADIUS, y + height - BORDER - RADIUS,
RADIUS, - G_PI / 2.0, 2 * G_PI - G_PI / 2.0);
cairo_fill (cr);
cairo_set_source_rgba (cr, 0.0, 1.0, 0.0, 1.0);
cairo_move_to (cr, x + BORDER + RADIUS, y + height - BORDER - RADIUS);
cairo_arc (cr, x + BORDER + RADIUS, y + height - BORDER - RADIUS,
RADIUS, - G_PI / 2.0, 2 * G_PI * private->value - G_PI / 2.0);
cairo_fill (cr);
}
static cairo_region_t *
gimp_canvas_progress_get_extents (GimpCanvasItem *item)
{
cairo_rectangle_int_t rectangle;
gdouble x, y;
gint width, height;
gimp_canvas_progress_transform (item, &x, &y, &width, &height);
/* add 1px on each side because fill()'s default impl does the same */
rectangle.x = (gint) x - 1;
rectangle.y = (gint) y - 1;
rectangle.width = width + 2;
rectangle.height = height + 2;
return cairo_region_create_rectangle (&rectangle);
}
static GimpProgress *
gimp_canvas_progress_start (GimpProgress *progress,
const gchar *message,
gboolean cancelable)
{
gimp_canvas_progress_set_text (progress, message);
return progress;
}
static void
gimp_canvas_progress_end (GimpProgress *progress)
{
}
static gboolean
gimp_canvas_progress_is_active (GimpProgress *progress)
{
return TRUE;
}
static void
gimp_canvas_progress_set_text (GimpProgress *progress,
const gchar *message)
{
GimpCanvasProgressPrivate *private = GET_PRIVATE (progress);
cairo_region_t *old_region;
cairo_region_t *new_region;
old_region = gimp_canvas_item_get_extents (GIMP_CANVAS_ITEM (progress));
if (private->text)
g_free (private->text);
private->text = g_strdup (message);
new_region = gimp_canvas_item_get_extents (GIMP_CANVAS_ITEM (progress));
cairo_region_union (new_region, old_region);
cairo_region_destroy (old_region);
_gimp_canvas_item_update (GIMP_CANVAS_ITEM (progress), new_region);
cairo_region_destroy (new_region);
}
static void
gimp_canvas_progress_set_value (GimpProgress *progress,
gdouble percentage)
{
GimpCanvasProgressPrivate *private = GET_PRIVATE (progress);
if (percentage != private->value)
{
cairo_region_t *region;
private->value = percentage;
region = gimp_canvas_item_get_extents (GIMP_CANVAS_ITEM (progress));
_gimp_canvas_item_update (GIMP_CANVAS_ITEM (progress), region);
cairo_region_destroy (region);
}
}
static gdouble
gimp_canvas_progress_get_value (GimpProgress *progress)
{
GimpCanvasProgressPrivate *private = GET_PRIVATE (progress);
return private->value;
}
static void
gimp_canvas_progress_pulse (GimpProgress *progress)
{
}
static gboolean
gimp_canvas_progress_message (GimpProgress *progress,
Gimp *gimp,
GimpMessageSeverity severity,
const gchar *domain,
const gchar *message)
{
return FALSE;
}
GimpCanvasItem *
gimp_canvas_progress_new (GimpDisplayShell *shell,
GimpHandleAnchor anchor,
gdouble x,
gdouble y)
{
g_return_val_if_fail (GIMP_IS_DISPLAY_SHELL (shell), NULL);
return g_object_new (GIMP_TYPE_CANVAS_PROGRESS,
"shell", shell,
"anchor", anchor,
"x", x,
"y", y,
NULL);
}
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