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gimp/libgimp/gimppatternselectbutton.c

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/* LIBGIMP - The GIMP Library
* Copyright (C) 1995-1997 Peter Mattis and Spencer Kimball
*
* gimppatternselectbutton.c
* Copyright (C) 1998 Andy Thomas
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; 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 "libgimpwidgets/gimpwidgets.h"
#include "gimp.h"
#include "gimpuitypes.h"
#include "gimppatternselectbutton.h"
#include "gimpuimarshal.h"
#include "libgimp-intl.h"
#define CELL_SIZE 20
#define GIMP_PATTERN_SELECT_BUTTON_GET_PRIVATE(obj) (G_TYPE_INSTANCE_GET_PRIVATE ((obj), GIMP_TYPE_PATTERN_SELECT_BUTTON, GimpPatternSelectButtonPrivate))
typedef struct _GimpPatternSelectButtonPrivate GimpPatternSelectButtonPrivate;
struct _GimpPatternSelectButtonPrivate
{
gchar *title;
gchar *pattern_name; /* Local copy */
gint width;
gint height;
gint bytes;
guchar *mask_data; /* local copy */
GtkWidget *inside;
GtkWidget *preview;
GtkWidget *popup;
};
enum
{
PATTERN_SET,
LAST_SIGNAL
};
enum
{
PROP_0,
PROP_TITLE,
PROP_PATTERN_NAME
};
/* local function prototypes */
static void gimp_pattern_select_button_finalize (GObject *object);
static void gimp_pattern_select_button_set_property (GObject *object,
guint property_id,
const GValue *value,
GParamSpec *pspec);
static void gimp_pattern_select_button_get_property (GObject *object,
guint property_id,
GValue *value,
GParamSpec *pspec);
static void gimp_pattern_select_button_clicked (GimpPatternSelectButton *button);
static void gimp_pattern_select_button_callback (const gchar *pattern_name,
gint width,
gint height,
gint bytes,
const guchar *mask_data,
gboolean dialog_closing,
gpointer user_data);
static void gimp_pattern_select_preview_resize (GimpPatternSelectButton *button);
static gboolean gimp_pattern_select_preview_events (GtkWidget *widget,
GdkEvent *event,
GimpPatternSelectButton *button);
static void gimp_pattern_select_preview_update (GtkWidget *preview,
gint width,
gint height,
gint bytes,
const guchar *mask_data);
static void gimp_pattern_select_button_open_popup (GimpPatternSelectButton *button,
gint x,
gint y);
static void gimp_pattern_select_button_close_popup (GimpPatternSelectButton *button);
static void gimp_pattern_select_drag_data_received (GimpPatternSelectButton *button,
GdkDragContext *context,
gint x,
gint y,
GtkSelectionData *selection,
guint info,
guint time);
static GtkWidget * gimp_pattern_select_button_create_inside (GimpPatternSelectButton *button);
static const GtkTargetEntry target = { "application/x-gimp-pattern-name", 0 };
static guint pattern_button_signals[LAST_SIGNAL] = { 0 };
G_DEFINE_TYPE (GimpPatternSelectButton, gimp_pattern_select_button,
GIMP_TYPE_SELECT_BUTTON)
static void
gimp_pattern_select_button_class_init (GimpPatternSelectButtonClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
GimpSelectButtonClass *select_button_class = GIMP_SELECT_BUTTON_CLASS (klass);
object_class->finalize = gimp_pattern_select_button_finalize;
object_class->set_property = gimp_pattern_select_button_set_property;
object_class->get_property = gimp_pattern_select_button_get_property;
select_button_class->select_destroy = gimp_pattern_select_destroy;
klass->pattern_set = NULL;
/**
* GimpPatternSelectButton:title:
*
* The title to be used for the pattern selection popup dialog.
*
* Since: GIMP 2.4
*/
g_object_class_install_property (object_class, PROP_TITLE,
g_param_spec_string ("title",
"Title",
"The title to be used for the pattern selection popup dialog",
_("Pattern Selection"),
GIMP_PARAM_READWRITE |
G_PARAM_CONSTRUCT_ONLY));
/**
* GimpPatternSelectButton:pattern-name:
*
* The name of the currently selected pattern.
*
* Since: GIMP 2.4
*/
g_object_class_install_property (object_class, PROP_PATTERN_NAME,
g_param_spec_string ("pattern-name",
"Pattern name",
"The name of the currently selected pattern",
NULL,
GIMP_PARAM_READWRITE));
/**
* GimpPatternSelectButton::pattern-set:
* @widget: the object which received the signal.
* @pattern_name: the name of the currently selected pattern.
* @width: width of the pattern
* @height: height of the pattern
* @bpp: bpp of the pattern
* @mask_data: pattern mask data
* @dialog_closing: whether the dialog was closed or not.
*
* The ::pattern-set signal is emitted when the user selects a pattern.
*
* Since: GIMP 2.4
*/
pattern_button_signals[PATTERN_SET] =
g_signal_new ("pattern-set",
G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_FIRST,
G_STRUCT_OFFSET (GimpPatternSelectButtonClass, pattern_set),
NULL, NULL,
_gimpui_marshal_VOID__STRING_INT_INT_INT_POINTER_BOOLEAN,
G_TYPE_NONE, 6,
G_TYPE_STRING,
G_TYPE_INT,
G_TYPE_INT,
G_TYPE_INT,
G_TYPE_POINTER,
G_TYPE_BOOLEAN);
g_type_class_add_private (object_class,
sizeof (GimpPatternSelectButtonPrivate));
}
static void
gimp_pattern_select_button_init (GimpPatternSelectButton *button)
{
GimpPatternSelectButtonPrivate *priv;
gint mask_data_size;
priv = GIMP_PATTERN_SELECT_BUTTON_GET_PRIVATE (button);
priv->pattern_name = gimp_context_get_pattern ();
gimp_pattern_get_pixels (priv->pattern_name,
&priv->width,
&priv->height,
&priv->bytes,
&mask_data_size,
&priv->mask_data);
priv->inside = gimp_pattern_select_button_create_inside (button);
gtk_container_add (GTK_CONTAINER (button), priv->inside);
priv->popup = NULL;
}
/**
* gimp_pattern_select_button_new:
* @title: Title of the dialog to use or %NULL to use the default title.
* @pattern_name: Initial pattern name or %NULL to use current selection.
*
* Creates a new #GtkWidget that completely controls the selection of
* a pattern. This widget is suitable for placement in a table in a
* plug-in dialog.
*
* Returns: A #GtkWidget that you can use in your UI.
*
* Since: GIMP 2.4
*/
GtkWidget *
gimp_pattern_select_button_new (const gchar *title,
const gchar *pattern_name)
{
GtkWidget *button;
if (title)
button = g_object_new (GIMP_TYPE_PATTERN_SELECT_BUTTON,
"title", title,
"pattern-name", pattern_name,
NULL);
else
button = g_object_new (GIMP_TYPE_PATTERN_SELECT_BUTTON,
"pattern-name", pattern_name,
NULL);
return button;
}
/**
* gimp_pattern_select_button_get_pattern:
* @button: A #GimpPatternSelectButton
*
* Retrieves the name of currently selected pattern.
*
* Returns: an internal copy of the pattern name which must not be freed.
*
* Since: GIMP 2.4
*/
const gchar *
gimp_pattern_select_button_get_pattern (GimpPatternSelectButton *button)
{
GimpPatternSelectButtonPrivate *priv;
g_return_val_if_fail (GIMP_IS_PATTERN_SELECT_BUTTON (button), NULL);
priv = GIMP_PATTERN_SELECT_BUTTON_GET_PRIVATE (button);
return priv->pattern_name;
}
/**
* gimp_pattern_select_button_set_pattern:
* @button: A #GimpPatternSelectButton
* @pattern_name: Pattern name to set; %NULL means no change.
*
* Sets the current pattern for the pattern select button.
*
* Since: GIMP 2.4
*/
void
gimp_pattern_select_button_set_pattern (GimpPatternSelectButton *button,
const gchar *pattern_name)
{
GimpSelectButton *select_button;
g_return_if_fail (GIMP_IS_PATTERN_SELECT_BUTTON (button));
select_button = GIMP_SELECT_BUTTON (button);
if (select_button->temp_callback)
{
gimp_patterns_set_popup (select_button->temp_callback, pattern_name);
}
else
{
gchar *name;
gint width;
gint height;
gint bytes;
gint mask_data_size;
guint8 *mask_data;
if (pattern_name && *pattern_name)
name = g_strdup (pattern_name);
else
name = gimp_context_get_pattern ();
if (gimp_pattern_get_pixels (name,
&width,
&height,
&bytes,
&mask_data_size,
&mask_data))
{
gimp_pattern_select_button_callback (name,
width, height, bytes, mask_data,
FALSE, button);
g_free (mask_data);
}
g_free (name);
}
}
/* private functions */
static void
gimp_pattern_select_button_finalize (GObject *object)
{
GimpPatternSelectButtonPrivate *priv;
priv = GIMP_PATTERN_SELECT_BUTTON_GET_PRIVATE (object);
g_free (priv->pattern_name);
priv->pattern_name = NULL;
g_free (priv->mask_data);
priv->mask_data = NULL;
g_free (priv->title);
priv->title = NULL;
G_OBJECT_CLASS (gimp_pattern_select_button_parent_class)->finalize (object);
}
static void
gimp_pattern_select_button_set_property (GObject *object,
guint property_id,
const GValue *value,
GParamSpec *pspec)
{
GimpPatternSelectButton *button;
GimpPatternSelectButtonPrivate *priv;
button = GIMP_PATTERN_SELECT_BUTTON (object);
priv = GIMP_PATTERN_SELECT_BUTTON_GET_PRIVATE (button);
switch (property_id)
{
case PROP_TITLE:
priv->title = g_value_dup_string (value);
break;
case PROP_PATTERN_NAME:
gimp_pattern_select_button_set_pattern (button,
g_value_get_string (value));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
break;
}
}
static void
gimp_pattern_select_button_get_property (GObject *object,
guint property_id,
GValue *value,
GParamSpec *pspec)
{
GimpPatternSelectButton *button;
GimpPatternSelectButtonPrivate *priv;
button = GIMP_PATTERN_SELECT_BUTTON (object);
priv = GIMP_PATTERN_SELECT_BUTTON_GET_PRIVATE (button);
switch (property_id)
{
case PROP_TITLE:
g_value_set_string (value, priv->title);
break;
case PROP_PATTERN_NAME:
g_value_set_string (value, priv->pattern_name);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
break;
}
}
static void
gimp_pattern_select_button_callback (const gchar *pattern_name,
gint width,
gint height,
gint bytes,
const guchar *mask_data,
gboolean dialog_closing,
gpointer user_data)
{
GimpPatternSelectButton *button;
GimpPatternSelectButtonPrivate *priv;
GimpSelectButton *select_button;
button = GIMP_PATTERN_SELECT_BUTTON (user_data);
priv = GIMP_PATTERN_SELECT_BUTTON_GET_PRIVATE (button);
select_button = GIMP_SELECT_BUTTON (button);
g_free (priv->pattern_name);
g_free (priv->mask_data);
priv->pattern_name = g_strdup (pattern_name);
priv->width = width;
priv->height = height;
priv->bytes = bytes;
priv->mask_data = g_memdup (mask_data, width * height * bytes);
gimp_pattern_select_preview_update (priv->preview,
width, height, bytes, mask_data);
if (dialog_closing)
select_button->temp_callback = NULL;
g_signal_emit (button, pattern_button_signals[PATTERN_SET], 0,
pattern_name, width, height, bytes, dialog_closing);
g_object_notify (G_OBJECT (button), "pattern-name");
}
static void
gimp_pattern_select_button_clicked (GimpPatternSelectButton *button)
{
GimpPatternSelectButtonPrivate *priv;
GimpSelectButton *select_button;
priv = GIMP_PATTERN_SELECT_BUTTON_GET_PRIVATE (button);
select_button = GIMP_SELECT_BUTTON (button);
if (select_button->temp_callback)
{
/* calling gimp_patterns_set_popup() raises the dialog */
gimp_patterns_set_popup (select_button->temp_callback,
priv->pattern_name);
}
else
{
select_button->temp_callback =
gimp_pattern_select_new (priv->title, priv->pattern_name,
gimp_pattern_select_button_callback,
button);
}
}
static void
gimp_pattern_select_preview_resize (GimpPatternSelectButton *button)
{
GimpPatternSelectButtonPrivate *priv;
priv = GIMP_PATTERN_SELECT_BUTTON_GET_PRIVATE (button);
if (priv->width > 0 && priv->height > 0)
gimp_pattern_select_preview_update (priv->preview,
priv->width,
priv->height,
priv->bytes,
priv->mask_data);
}
static gboolean
gimp_pattern_select_preview_events (GtkWidget *widget,
GdkEvent *event,
GimpPatternSelectButton *button)
{
GimpPatternSelectButtonPrivate *priv;
GdkEventButton *bevent;
priv = GIMP_PATTERN_SELECT_BUTTON_GET_PRIVATE (button);
if (priv->mask_data)
{
switch (event->type)
{
case GDK_BUTTON_PRESS:
bevent = (GdkEventButton *) event;
if (bevent->button == 1)
{
gtk_grab_add (widget);
gimp_pattern_select_button_open_popup (button,
bevent->x, bevent->y);
}
break;
case GDK_BUTTON_RELEASE:
bevent = (GdkEventButton *) event;
if (bevent->button == 1)
{
gtk_grab_remove (widget);
gimp_pattern_select_button_close_popup (button);
}
break;
default:
break;
}
}
return FALSE;
}
static void
gimp_pattern_select_preview_update (GtkWidget *preview,
gint width,
gint height,
gint bytes,
const guchar *mask_data)
{
GimpImageType type;
switch (bytes)
{
case 1: type = GIMP_GRAY_IMAGE; break;
case 2: type = GIMP_GRAYA_IMAGE; break;
case 3: type = GIMP_RGB_IMAGE; break;
case 4: type = GIMP_RGBA_IMAGE; break;
default:
return;
}
gimp_preview_area_draw (GIMP_PREVIEW_AREA (preview),
0, 0, width, height,
type,
mask_data,
width * bytes);
}
static void
gimp_pattern_select_button_open_popup (GimpPatternSelectButton *button,
gint x,
gint y)
{
GimpPatternSelectButtonPrivate *priv;
GtkWidget *frame;
GtkWidget *preview;
GdkScreen *screen;
gint x_org;
gint y_org;
gint scr_w;
gint scr_h;
priv = GIMP_PATTERN_SELECT_BUTTON_GET_PRIVATE (button);
if (priv->popup)
gimp_pattern_select_button_close_popup (button);
if (priv->width <= CELL_SIZE && priv->height <= CELL_SIZE)
return;
priv->popup = gtk_window_new (GTK_WINDOW_POPUP);
frame = gtk_frame_new (NULL);
gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_OUT);
gtk_container_add (GTK_CONTAINER (priv->popup), frame);
gtk_widget_show (frame);
preview = gimp_preview_area_new ();
gtk_widget_set_size_request (preview, priv->width, priv->height);
gtk_container_add (GTK_CONTAINER (frame), preview);
gtk_widget_show (preview);
/* decide where to put the popup */
gdk_window_get_origin (priv->preview->window, &x_org, &y_org);
screen = gtk_widget_get_screen (priv->popup);
scr_w = gdk_screen_get_width (screen);
scr_h = gdk_screen_get_height (screen);
x = x_org + x - (priv->width / 2);
y = y_org + y - (priv->height / 2);
x = (x < 0) ? 0 : x;
y = (y < 0) ? 0 : y;
x = (x + priv->width > scr_w) ? scr_w - priv->width : x;
y = (y + priv->height > scr_h) ? scr_h - priv->height : y;
gtk_window_move (GTK_WINDOW (priv->popup), x, y);
gtk_widget_show (priv->popup);
/* Draw the pattern */
gimp_pattern_select_preview_update (preview,
priv->width,
priv->height,
priv->bytes,
priv->mask_data);
}
static void
gimp_pattern_select_button_close_popup (GimpPatternSelectButton *button)
{
GimpPatternSelectButtonPrivate *priv;
priv = GIMP_PATTERN_SELECT_BUTTON_GET_PRIVATE (button);
if (priv->popup)
{
gtk_widget_destroy (priv->popup);
priv->popup = NULL;
}
}
static void
gimp_pattern_select_drag_data_received (GimpPatternSelectButton *button,
GdkDragContext *context,
gint x,
gint y,
GtkSelectionData *selection,
guint info,
guint time)
{
gchar *str;
if ((selection->format != 8) || (selection->length < 1))
{
g_warning ("Received invalid pattern data!");
return;
}
str = g_strndup ((const gchar *) selection->data, selection->length);
if (g_utf8_validate (str, -1, NULL))
{
gint pid;
gpointer unused;
gint name_offset = 0;
if (sscanf (str, "%i:%p:%n", &pid, &unused, &name_offset) >= 2 &&
pid == gimp_getpid () && name_offset > 0)
{
gchar *name = str + name_offset;
gimp_pattern_select_button_set_pattern (button, name);
}
}
g_free (str);
}
static GtkWidget *
gimp_pattern_select_button_create_inside (GimpPatternSelectButton *pattern_button)
{
GtkWidget *hbox;
GtkWidget *frame;
GtkWidget *button;
GimpPatternSelectButtonPrivate *priv;
priv = GIMP_PATTERN_SELECT_BUTTON_GET_PRIVATE (pattern_button);
gtk_widget_push_composite_child ();
hbox = gtk_hbox_new (FALSE, 6);
frame = gtk_frame_new (NULL);
gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_IN);
gtk_box_pack_start (GTK_BOX (hbox), frame, FALSE, FALSE, 0);
priv->preview = gimp_preview_area_new ();
gtk_widget_add_events (priv->preview,
GDK_BUTTON_PRESS_MASK | GDK_BUTTON_RELEASE_MASK);
gtk_widget_set_size_request (priv->preview, CELL_SIZE, CELL_SIZE);
gtk_container_add (GTK_CONTAINER (frame), priv->preview);
g_signal_connect_swapped (priv->preview, "size-allocate",
G_CALLBACK (gimp_pattern_select_preview_resize),
pattern_button);
g_signal_connect (priv->preview, "event",
G_CALLBACK (gimp_pattern_select_preview_events),
pattern_button);
gtk_drag_dest_set (GTK_WIDGET (priv->preview),
GTK_DEST_DEFAULT_HIGHLIGHT |
GTK_DEST_DEFAULT_MOTION |
GTK_DEST_DEFAULT_DROP,
&target, 1,
GDK_ACTION_COPY);
g_signal_connect (priv->preview, "drag-data-received",
G_CALLBACK (gimp_pattern_select_drag_data_received),
hbox);
button = gtk_button_new_with_mnemonic (_("_Browse..."));
gtk_box_pack_start (GTK_BOX (hbox), button, TRUE, TRUE, 0);
g_signal_connect_swapped (button, "clicked",
G_CALLBACK (gimp_pattern_select_button_clicked),
pattern_button);
gtk_widget_show_all (hbox);
gtk_widget_pop_composite_child ();
return hbox;
}
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