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gimp/app/display/gimpdisplay.c

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/* The GIMP -- an 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 "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 "widgets/gimpwidgets-utils.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_class_init (GimpDisplayClass *klass);
static void gimp_display_init (GimpDisplay *gdisp);
static void gimp_display_progress_iface_init (GimpProgressInterface *progress_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 void gimp_display_progress_canceled (GimpProgress *progress,
GimpDisplay *display);
static void gimp_display_flush_whenever (GimpDisplay *gdisp,
gboolean now);
static void gimp_display_paint_area (GimpDisplay *gdisp,
gint x,
gint y,
gint w,
gint h);
static GimpObjectClass *parent_class = NULL;
GType
gimp_display_get_type (void)
{
static GType display_type = 0;
if (! display_type)
{
static const GTypeInfo display_info =
{
sizeof (GimpDisplayClass),
(GBaseInitFunc) NULL,
(GBaseFinalizeFunc) NULL,
(GClassInitFunc) gimp_display_class_init,
NULL, /* class_finalize */
NULL, /* class_data */
sizeof (GimpDisplay),
0, /* n_preallocs */
(GInstanceInitFunc) gimp_display_init,
};
static const GInterfaceInfo progress_iface_info =
{
(GInterfaceInitFunc) gimp_display_progress_iface_init,
NULL, /* iface_finalize */
NULL /* iface_data */
};
display_type = g_type_register_static (GIMP_TYPE_OBJECT,
"GimpDisplay",
&display_info, 0);
g_type_add_interface_static (display_type, GIMP_TYPE_PROGRESS,
&progress_iface_info);
}
return display_type;
}
static void
gimp_display_class_init (GimpDisplayClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
parent_class = g_type_class_peek_parent (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,
G_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,
G_PARAM_READABLE));
g_object_class_install_property (object_class, PROP_SHELL,
g_param_spec_object ("shell",
NULL, NULL,
GIMP_TYPE_DISPLAY_SHELL,
G_PARAM_READABLE));
}
static void
gimp_display_init (GimpDisplay *gdisp)
{
gdisp->ID = 0;
gdisp->gimage = NULL;
gdisp->instance = 0;
gdisp->shell = NULL;
gdisp->update_areas = NULL;
}
static void
gimp_display_progress_iface_init (GimpProgressInterface *progress_iface)
{
progress_iface->start = gimp_display_progress_start;
progress_iface->end = gimp_display_progress_end;
progress_iface->is_active = gimp_display_progress_is_active;
progress_iface->set_text = gimp_display_progress_set_text;
progress_iface->set_value = gimp_display_progress_set_value;
progress_iface->get_value = gimp_display_progress_get_value;
progress_iface->pulse = gimp_display_progress_pulse;
progress_iface->get_window = gimp_display_progress_get_window;
}
static void
gimp_display_set_property (GObject *object,
guint property_id,
const GValue *value,
GParamSpec *pspec)
{
GimpDisplay *gdisp = GIMP_DISPLAY (object);
switch (property_id)
{
case PROP_ID:
gdisp->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 *gdisp = GIMP_DISPLAY (object);
switch (property_id)
{
case PROP_ID:
g_value_set_int (value, gdisp->ID);
break;
case PROP_IMAGE:
g_value_set_object (value, gdisp->gimage);
break;
case PROP_SHELL:
g_value_set_object (value, gdisp->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);
GimpDisplayShell *shell;
if (! display->shell)
return NULL;
shell = GIMP_DISPLAY_SHELL (display->shell);
return gimp_progress_start (GIMP_PROGRESS (shell->statusbar),
message, cancelable);
}
static void
gimp_display_progress_end (GimpProgress *progress)
{
GimpDisplay *display = GIMP_DISPLAY (progress);
GimpDisplayShell *shell;
if (! display->shell)
return;
shell = GIMP_DISPLAY_SHELL (display->shell);
gimp_progress_end (GIMP_PROGRESS (shell->statusbar));
}
static gboolean
gimp_display_progress_is_active (GimpProgress *progress)
{
GimpDisplay *display = GIMP_DISPLAY (progress);
GimpDisplayShell *shell;
if (! display->shell)
return FALSE;
shell = GIMP_DISPLAY_SHELL (display->shell);
return gimp_progress_is_active (GIMP_PROGRESS (shell->statusbar));
}
static void
gimp_display_progress_set_text (GimpProgress *progress,
const gchar *message)
{
GimpDisplay *display = GIMP_DISPLAY (progress);
GimpDisplayShell *shell;
if (! display->shell)
return;
shell = GIMP_DISPLAY_SHELL (display->shell);
gimp_progress_set_text (GIMP_PROGRESS (shell->statusbar), message);
}
static void
gimp_display_progress_set_value (GimpProgress *progress,
gdouble percentage)
{
GimpDisplay *display = GIMP_DISPLAY (progress);
GimpDisplayShell *shell;
if (! display->shell)
return;
shell = GIMP_DISPLAY_SHELL (display->shell);
gimp_progress_set_value (GIMP_PROGRESS (shell->statusbar), percentage);
}
static gdouble
gimp_display_progress_get_value (GimpProgress *progress)
{
GimpDisplay *display = GIMP_DISPLAY (progress);
GimpDisplayShell *shell;
if (! display->shell)
return 0.0;
shell = GIMP_DISPLAY_SHELL (display->shell);
return gimp_progress_get_value (GIMP_PROGRESS (shell->statusbar));
}
static void
gimp_display_progress_pulse (GimpProgress *progress)
{
GimpDisplay *display = GIMP_DISPLAY (progress);
GimpDisplayShell *shell;
if (! display->shell)
return;
shell = GIMP_DISPLAY_SHELL (display->shell);
gimp_progress_pulse (GIMP_PROGRESS (shell->statusbar));
}
static guint32
gimp_display_progress_get_window (GimpProgress *progress)
{
GimpDisplay *display = GIMP_DISPLAY (progress);
if (! display->shell)
return 0;
return (guint32) gimp_window_get_native (GTK_WINDOW (display->shell));
}
static void
gimp_display_progress_canceled (GimpProgress *progress,
GimpDisplay *display)
{
gimp_progress_cancel (GIMP_PROGRESS (display));
}
/* public functions */
GimpDisplay *
gimp_display_new (GimpImage *gimage,
GimpUnit unit,
gdouble scale,
GimpMenuFactory *menu_factory,
GimpUIManager *popup_manager)
{
GimpDisplay *gdisp;
g_return_val_if_fail (GIMP_IS_IMAGE (gimage), NULL);
/* If there isn't an interface, never create a gdisplay */
if (gimage->gimp->no_interface)
return NULL;
gdisp = g_object_new (GIMP_TYPE_DISPLAY,
"id", gimage->gimp->next_display_ID++,
NULL);
/* refs the image */
gimp_display_connect (gdisp, gimage);
/* create the shell for the image */
gdisp->shell = gimp_display_shell_new (gdisp, unit, scale,
menu_factory, popup_manager);
gtk_widget_show (gdisp->shell);
g_signal_connect (GIMP_DISPLAY_SHELL (gdisp->shell)->statusbar, "cancel",
G_CALLBACK (gimp_display_progress_canceled),
gdisp);
return gdisp;
}
void
gimp_display_delete (GimpDisplay *gdisp)
{
GimpTool *active_tool;
g_return_if_fail (GIMP_IS_DISPLAY (gdisp));
/* remove the display from the list */
gimp_container_remove (gdisp->gimage->gimp->displays,
GIMP_OBJECT (gdisp));
/* stop any active tool */
tool_manager_control_active (gdisp->gimage->gimp, HALT, gdisp);
active_tool = tool_manager_get_active (gdisp->gimage->gimp);
if (active_tool)
{
if (active_tool->focus_display == gdisp)
tool_manager_focus_display_active (gdisp->gimage->gimp, NULL);
/* clear out the pointer to this gdisp from the active tool */
if (active_tool->gdisp == gdisp)
{
active_tool->drawable = NULL;
active_tool->gdisp = NULL;
}
}
/* free the update area lists */
gdisp->update_areas = gimp_area_list_free (gdisp->update_areas);
if (gdisp->shell)
{
GtkWidget *shell = gdisp->shell;
/* set gdisp->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.
*/
gdisp->shell = NULL;
gtk_widget_destroy (shell);
}
/* unrefs the gimage */
gimp_display_disconnect (gdisp);
g_object_unref (gdisp);
}
gint
gimp_display_get_ID (GimpDisplay *gdisp)
{
g_return_val_if_fail (GIMP_IS_DISPLAY (gdisp), -1);
return gdisp->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 *gdisp = list->data;
if (gdisp->ID == ID)
return gdisp;
}
return NULL;
}
void
gimp_display_reconnect (GimpDisplay *gdisp,
GimpImage *gimage)
{
g_return_if_fail (GIMP_IS_DISPLAY (gdisp));
g_return_if_fail (GIMP_IS_IMAGE (gimage));
/* stop any active tool */
tool_manager_control_active (gdisp->gimage->gimp, HALT, gdisp);
gimp_display_shell_disconnect (GIMP_DISPLAY_SHELL (gdisp->shell));
gimp_display_disconnect (gdisp);
gimp_display_connect (gdisp, gimage);
gimp_display_shell_reconnect (GIMP_DISPLAY_SHELL (gdisp->shell));
}
void
gimp_display_update_area (GimpDisplay *gdisp,
gboolean now,
gint x,
gint y,
gint w,
gint h)
{
g_return_if_fail (GIMP_IS_DISPLAY (gdisp));
if (now)
{
gimp_display_paint_area (gdisp, x, y, w, h);
}
else
{
GimpArea *area = gimp_area_new (CLAMP (x, 0, gdisp->gimage->width),
CLAMP (y, 0, gdisp->gimage->height),
CLAMP (x + w, 0, gdisp->gimage->width),
CLAMP (y + h, 0, gdisp->gimage->height));
gdisp->update_areas = gimp_area_list_process (gdisp->update_areas, area);
}
}
void
gimp_display_flush (GimpDisplay *gdisp)
{
g_return_if_fail (GIMP_IS_DISPLAY (gdisp));
gimp_display_flush_whenever (gdisp, FALSE);
}
void
gimp_display_flush_now (GimpDisplay *gdisp)
{
g_return_if_fail (GIMP_IS_DISPLAY (gdisp));
gimp_display_flush_whenever (gdisp, TRUE);
}
/* private functions */
static void
gimp_display_flush_whenever (GimpDisplay *gdisp,
gboolean now)
{
if (gdisp->update_areas)
{
GSList *list;
for (list = gdisp->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 (gdisp,
area->x1,
area->y1,
(area->x2 - area->x1),
(area->y2 - area->y1));
}
}
gdisp->update_areas = gimp_area_list_free (gdisp->update_areas);
}
gimp_display_shell_flush (GIMP_DISPLAY_SHELL (gdisp->shell), now);
}
static void
gimp_display_paint_area (GimpDisplay *gdisp,
gint x,
gint y,
gint w,
gint h)
{
GimpDisplayShell *shell = GIMP_DISPLAY_SHELL (gdisp->shell);
gint x1, y1, x2, y2;
gdouble x1_f, y1_f, x2_f, y2_f;
/* Bounds check */
x1 = CLAMP (x, 0, gdisp->gimage->width);
y1 = CLAMP (y, 0, gdisp->gimage->height);
x2 = CLAMP (x + w, 0, gdisp->gimage->width);
y2 = CLAMP (y + h, 0, gdisp->gimage->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
*/
x1 = floor (x1_f);
y1 = floor (y1_f);
x2 = ceil (x2_f);
y2 = ceil (y2_f);
gimp_display_shell_expose_area (shell, x1, y1, x2 - x1, y2 - y1);
}
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