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gimp/app/display/gimpdisplay.c

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/* GIMP - The GNU Image Manipulation Program
* 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 2 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, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#include "config.h"
#include <gtk/gtk.h>
#include "libgimpmath/gimpmath.h"
#include "display-types.h"
#include "tools/tools-types.h"
#include "core/gimp.h"
#include "core/gimparea.h"
#include "core/gimpimage.h"
#include "core/gimplist.h"
#include "core/gimpprogress.h"
#include "tools/gimptool.h"
#include "tools/tool_manager.h"
#include "gimpdisplay.h"
#include "gimpdisplay-handlers.h"
#include "gimpdisplayshell.h"
#include "gimpdisplayshell-handlers.h"
#include "gimpdisplayshell-transform.h"
#include "gimp-intl.h"
enum
{
PROP_0,
PROP_ID,
PROP_IMAGE,
PROP_SHELL
};
/* local function prototypes */
static void gimp_display_progress_iface_init (GimpProgressInterface *iface);
static void gimp_display_set_property (GObject *object,
guint property_id,
const GValue *value,
GParamSpec *pspec);
static void gimp_display_get_property (GObject *object,
guint property_id,
GValue *value,
GParamSpec *pspec);
static GimpProgress *
gimp_display_progress_start (GimpProgress *progress,
const gchar *message,
gboolean cancelable);
static void gimp_display_progress_end (GimpProgress *progress);
static gboolean gimp_display_progress_is_active (GimpProgress *progress);
static void gimp_display_progress_set_text (GimpProgress *progress,
const gchar *message);
static void gimp_display_progress_set_value (GimpProgress *progress,
gdouble percentage);
static gdouble gimp_display_progress_get_value (GimpProgress *progress);
static void gimp_display_progress_pulse (GimpProgress *progress);
static guint32 gimp_display_progress_get_window (GimpProgress *progress);
static gboolean gimp_display_progress_message (GimpProgress *progress,
Gimp *gimp,
GimpMessageSeverity severity,
const gchar *domain,
const gchar *message);
static void gimp_display_progress_canceled (GimpProgress *progress,
GimpDisplay *display);
static void gimp_display_flush_whenever (GimpDisplay *display,
gboolean now);
static void gimp_display_paint_area (GimpDisplay *display,
gint x,
gint y,
gint w,
gint h);
G_DEFINE_TYPE_WITH_CODE (GimpDisplay, gimp_display, GIMP_TYPE_OBJECT,
G_IMPLEMENT_INTERFACE (GIMP_TYPE_PROGRESS,
gimp_display_progress_iface_init))
#define parent_class gimp_display_parent_class
static void
gimp_display_class_init (GimpDisplayClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
object_class->set_property = gimp_display_set_property;
object_class->get_property = gimp_display_get_property;
g_object_class_install_property (object_class, PROP_ID,
g_param_spec_int ("id",
NULL, NULL,
0, G_MAXINT, 0,
GIMP_PARAM_READWRITE |
G_PARAM_CONSTRUCT_ONLY));
g_object_class_install_property (object_class, PROP_IMAGE,
g_param_spec_object ("image",
NULL, NULL,
GIMP_TYPE_IMAGE,
GIMP_PARAM_READABLE));
g_object_class_install_property (object_class, PROP_SHELL,
g_param_spec_object ("shell",
NULL, NULL,
GIMP_TYPE_DISPLAY_SHELL,
GIMP_PARAM_READABLE));
}
static void
gimp_display_init (GimpDisplay *display)
{
display->ID = 0;
display->image = NULL;
display->instance = 0;
display->shell = NULL;
display->update_areas = NULL;
}
static void
gimp_display_progress_iface_init (GimpProgressInterface *iface)
{
iface->start = gimp_display_progress_start;
iface->end = gimp_display_progress_end;
iface->is_active = gimp_display_progress_is_active;
iface->set_text = gimp_display_progress_set_text;
iface->set_value = gimp_display_progress_set_value;
iface->get_value = gimp_display_progress_get_value;
iface->pulse = gimp_display_progress_pulse;
iface->get_window = gimp_display_progress_get_window;
iface->message = gimp_display_progress_message;
}
static void
gimp_display_set_property (GObject *object,
guint property_id,
const GValue *value,
GParamSpec *pspec)
{
GimpDisplay *display = GIMP_DISPLAY (object);
switch (property_id)
{
case PROP_ID:
display->ID = g_value_get_int (value);
break;
case PROP_IMAGE:
case PROP_SHELL:
g_assert_not_reached ();
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
break;
}
}
static void
gimp_display_get_property (GObject *object,
guint property_id,
GValue *value,
GParamSpec *pspec)
{
GimpDisplay *display = GIMP_DISPLAY (object);
switch (property_id)
{
case PROP_ID:
g_value_set_int (value, display->ID);
break;
case PROP_IMAGE:
g_value_set_object (value, display->image);
break;
case PROP_SHELL:
g_value_set_object (value, display->shell);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
break;
}
}
static GimpProgress *
gimp_display_progress_start (GimpProgress *progress,
const gchar *message,
gboolean cancelable)
{
GimpDisplay *display = GIMP_DISPLAY (progress);
if (display->shell)
return gimp_progress_start (GIMP_PROGRESS (display->shell),
message, cancelable);
return NULL;
}
static void
gimp_display_progress_end (GimpProgress *progress)
{
GimpDisplay *display = GIMP_DISPLAY (progress);
if (display->shell)
gimp_progress_end (GIMP_PROGRESS (display->shell));
}
static gboolean
gimp_display_progress_is_active (GimpProgress *progress)
{
GimpDisplay *display = GIMP_DISPLAY (progress);
if (display->shell)
return gimp_progress_is_active (GIMP_PROGRESS (display->shell));
return FALSE;
}
static void
gimp_display_progress_set_text (GimpProgress *progress,
const gchar *message)
{
GimpDisplay *display = GIMP_DISPLAY (progress);
if (display->shell)
gimp_progress_set_text (GIMP_PROGRESS (display->shell), message);
}
static void
gimp_display_progress_set_value (GimpProgress *progress,
gdouble percentage)
{
GimpDisplay *display = GIMP_DISPLAY (progress);
if (display->shell)
gimp_progress_set_value (GIMP_PROGRESS (display->shell), percentage);
}
static gdouble
gimp_display_progress_get_value (GimpProgress *progress)
{
GimpDisplay *display = GIMP_DISPLAY (progress);
if (display->shell)
return gimp_progress_get_value (GIMP_PROGRESS (display->shell));
return 0.0;
}
static void
gimp_display_progress_pulse (GimpProgress *progress)
{
GimpDisplay *display = GIMP_DISPLAY (progress);
if (display->shell)
gimp_progress_pulse (GIMP_PROGRESS (display->shell));
}
static guint32
gimp_display_progress_get_window (GimpProgress *progress)
{
GimpDisplay *display = GIMP_DISPLAY (progress);
if (display->shell)
return gimp_progress_get_window (GIMP_PROGRESS (display->shell));
return 0;
}
static gboolean
gimp_display_progress_message (GimpProgress *progress,
Gimp *gimp,
GimpMessageSeverity severity,
const gchar *domain,
const gchar *message)
{
GimpDisplay *display = GIMP_DISPLAY (progress);
if (display->shell)
return gimp_progress_message (GIMP_PROGRESS (display->shell), gimp,
severity, domain, message);
return FALSE;
}
static void
gimp_display_progress_canceled (GimpProgress *progress,
GimpDisplay *display)
{
gimp_progress_cancel (GIMP_PROGRESS (display));
}
/* public functions */
GimpDisplay *
gimp_display_new (GimpImage *image,
GimpUnit unit,
gdouble scale,
GimpMenuFactory *menu_factory,
GimpUIManager *popup_manager)
{
GimpDisplay *display;
gint ID;
g_return_val_if_fail (GIMP_IS_IMAGE (image), NULL);
/* If there isn't an interface, never create a display */
if (image->gimp->no_interface)
return NULL;
do
{
ID = image->gimp->next_display_ID++;
if (image->gimp->next_display_ID == G_MAXINT)
image->gimp->next_display_ID = 1;
}
while (gimp_display_get_by_ID (image->gimp, ID));
display = g_object_new (GIMP_TYPE_DISPLAY,
"id", ID,
NULL);
/* refs the image */
gimp_display_connect (display, image);
/* create the shell for the image */
display->shell = gimp_display_shell_new (display, unit, scale,
menu_factory, popup_manager);
gtk_widget_show (display->shell);
g_signal_connect (GIMP_DISPLAY_SHELL (display->shell)->statusbar, "cancel",
G_CALLBACK (gimp_display_progress_canceled),
display);
/* add the display to the list */
gimp_container_add (image->gimp->displays, GIMP_OBJECT (display));
return display;
}
void
gimp_display_delete (GimpDisplay *display)
{
GimpTool *active_tool;
g_return_if_fail (GIMP_IS_DISPLAY (display));
/* remove the display from the list */
gimp_container_remove (display->image->gimp->displays,
GIMP_OBJECT (display));
/* stop any active tool */
tool_manager_control_active (display->image->gimp, GIMP_TOOL_ACTION_HALT,
display);
active_tool = tool_manager_get_active (display->image->gimp);
if (active_tool && active_tool->focus_display == display)
tool_manager_focus_display_active (display->image->gimp, NULL);
/* free the update area lists */
gimp_area_list_free (display->update_areas);
display->update_areas = NULL;
if (display->shell)
{
GtkWidget *shell = display->shell;
/* set display->shell to NULL *before* destroying the shell.
* all callbacks in gimpdisplayshell-callbacks.c will check
* this pointer and do nothing if the shell is in destruction.
*/
display->shell = NULL;
gtk_widget_destroy (shell);
}
/* unrefs the image */
gimp_display_disconnect (display);
g_object_unref (display);
}
gint
gimp_display_get_ID (GimpDisplay *display)
{
g_return_val_if_fail (GIMP_IS_DISPLAY (display), -1);
return display->ID;
}
GimpDisplay *
gimp_display_get_by_ID (Gimp *gimp,
gint ID)
{
GList *list;
g_return_val_if_fail (GIMP_IS_GIMP (gimp), NULL);
for (list = GIMP_LIST (gimp->displays)->list;
list;
list = g_list_next (list))
{
GimpDisplay *display = list->data;
if (display->ID == ID)
return display;
}
return NULL;
}
void
gimp_display_reconnect (GimpDisplay *display,
GimpImage *image)
{
GimpImage *old_image;
g_return_if_fail (GIMP_IS_DISPLAY (display));
g_return_if_fail (GIMP_IS_IMAGE (image));
/* stop any active tool */
tool_manager_control_active (display->image->gimp, GIMP_TOOL_ACTION_HALT,
display);
gimp_display_shell_disconnect (GIMP_DISPLAY_SHELL (display->shell));
old_image = g_object_ref (display->image);
gimp_display_disconnect (display);
gimp_display_connect (display, image);
g_object_unref (old_image);
gimp_display_shell_reconnect (GIMP_DISPLAY_SHELL (display->shell));
}
void
gimp_display_update_area (GimpDisplay *display,
gboolean now,
gint x,
gint y,
gint w,
gint h)
{
g_return_if_fail (GIMP_IS_DISPLAY (display));
if (now)
{
gimp_display_paint_area (display, x, y, w, h);
}
else
{
GimpArea *area;
gint image_width = gimp_image_get_width (display->image);
gint image_height = gimp_image_get_height (display->image);
area = gimp_area_new (CLAMP (x, 0, image_width),
CLAMP (y, 0, image_height),
CLAMP (x + w, 0, image_width),
CLAMP (y + h, 0, image_height));
display->update_areas = gimp_area_list_process (display->update_areas,
area);
}
}
void
gimp_display_flush (GimpDisplay *display)
{
g_return_if_fail (GIMP_IS_DISPLAY (display));
gimp_display_flush_whenever (display, FALSE);
}
void
gimp_display_flush_now (GimpDisplay *display)
{
g_return_if_fail (GIMP_IS_DISPLAY (display));
gimp_display_flush_whenever (display, TRUE);
}
/* private functions */
static void
gimp_display_flush_whenever (GimpDisplay *display,
gboolean now)
{
if (display->update_areas)
{
GSList *list;
for (list = display->update_areas; list; list = g_slist_next (list))
{
GimpArea *area = list->data;
if ((area->x1 != area->x2) && (area->y1 != area->y2))
{
gimp_display_paint_area (display,
area->x1,
area->y1,
(area->x2 - area->x1),
(area->y2 - area->y1));
}
}
gimp_area_list_free (display->update_areas);
display->update_areas = NULL;
}
gimp_display_shell_flush (GIMP_DISPLAY_SHELL (display->shell), now);
}
static void
gimp_display_paint_area (GimpDisplay *display,
gint x,
gint y,
gint w,
gint h)
{
GimpDisplayShell *shell = GIMP_DISPLAY_SHELL (display->shell);
gint image_width = gimp_image_get_width (display->image);
gint image_height = gimp_image_get_height (display->image);
gint x1, y1, x2, y2;
gdouble x1_f, y1_f, x2_f, y2_f;
/* Bounds check */
x1 = CLAMP (x, 0, image_width);
y1 = CLAMP (y, 0, image_height);
x2 = CLAMP (x + w, 0, image_width);
y2 = CLAMP (y + h, 0, image_height);
x = x1;
y = y1;
w = (x2 - x1);
h = (y2 - y1);
/* display the area */
gimp_display_shell_transform_xy_f (shell, x, y, &x1_f, &y1_f, FALSE);
gimp_display_shell_transform_xy_f (shell, x + w, y + h, &x2_f, &y2_f, FALSE);
/* make sure to expose a superset of the transformed sub-pixel expose
* area, not a subset. bug #126942. --mitch
*
* also acommodate for spill introduced by potential box filtering.
* (bug #474509). --simon
*/
x1 = floor (x1_f - 0.5);
y1 = floor (y1_f - 0.5);
x2 = ceil (x2_f + 0.5);
y2 = ceil (y2_f + 0.5);
gimp_display_shell_expose_area (shell, x1, y1, x2 - x1, y2 - y1);
}
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