dnrops
/
gimp
mirror of https://github.com/GNOME/gimp.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity
gimp/app/gimpdnd.c

1522 lines
36 KiB
C
Raw Blame History

/* The GIMP -- an image manipulation program
* Copyright (C) 1995-1997 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 <stdlib.h>
#include <string.h>
#include <gtk/gtk.h>
#include "libgimpcolor/gimpcolor.h"
#include "libgimpwidgets/gimpwidgets.h"
#include "apptypes.h"
#include "tools/gimptool.h"
#include "tools/gimptoolinfo.h"
#include "tools/tool_manager.h"
#include "widgets/gimppreview.h"
#include "context_manager.h"
#include "file-open.h"
#include "gimpimage.h"
#include "gimpbrush.h"
#include "gimpchannel.h"
#include "gimpcontainer.h"
#include "gimpdatafactory.h"
#include "gimpdnd.h"
#include "gimpdrawable.h"
#include "gimpgradient.h"
#include "gimplayer.h"
#include "gimplayermask.h"
#include "gimppalette.h"
#include "gimppattern.h"
#include "gimprc.h"
#include "temp_buf.h"
#include "libgimp/gimplimits.h"
#define DRAG_PREVIEW_SIZE 32
#define DRAG_ICON_OFFSET -8
typedef enum
{
GIMP_DND_DATA_NONE,
GIMP_DND_DATA_COLOR,
GIMP_DND_DATA_IMAGE,
GIMP_DND_DATA_LAYER,
GIMP_DND_DATA_CHANNEL,
GIMP_DND_DATA_LAYER_MASK,
GIMP_DND_DATA_BRUSH,
GIMP_DND_DATA_PATTERN,
GIMP_DND_DATA_GRADIENT,
GIMP_DND_DATA_PALETTE,
GIMP_DND_DATA_TOOL,
GIMP_DND_DATA_LAST = GIMP_DND_DATA_TOOL
} GimpDndDataType;
typedef GtkWidget * (* GimpDndGetIconFunc) (GtkWidget *widget,
GtkSignalFunc get_data_func,
gpointer get_data_data);
typedef guchar * (* GimpDndDragDataFunc) (GtkWidget *widget,
GtkSignalFunc get_data_func,
gpointer get_data_data,
gint *format,
gint *length);
typedef void (* GimpDndDropDataFunc) (GtkWidget *widget,
GtkSignalFunc set_data_func,
gpointer set_data_data,
guchar *vals,
gint format,
gint length);
typedef struct _GimpDndDataDef GimpDndDataDef;
struct _GimpDndDataDef
{
GtkTargetEntry target_entry;
gchar *set_data_func_name;
gchar *set_data_data_name;
GimpDndGetIconFunc get_icon_func;
GimpDndDragDataFunc get_data_func;
GimpDndDropDataFunc set_data_func;
};
static GtkWidget * gimp_dnd_get_viewable_icon (GtkWidget *widget,
GtkSignalFunc get_viewable_func,
gpointer get_viewable_data);
static GtkWidget * gimp_dnd_get_color_icon (GtkWidget *widget,
GtkSignalFunc get_color_func,
gpointer get_color_data);
static guchar * gimp_dnd_get_color_data (GtkWidget *widget,
GtkSignalFunc get_color_func,
gpointer get_color_data,
gint *format,
gint *length);
static guchar * gimp_dnd_get_image_data (GtkWidget *widget,
GtkSignalFunc get_image_func,
gpointer get_image_data,
gint *format,
gint *length);
static guchar * gimp_dnd_get_drawable_data (GtkWidget *widget,
GtkSignalFunc get_drawable_func,
gpointer get_drawable_data,
gint *format,
gint *length);
static guchar * gimp_dnd_get_data_data (GtkWidget *widget,
GtkSignalFunc get_data_func,
gpointer get_data_data,
gint *format,
gint *length);
static guchar * gimp_dnd_get_tool_data (GtkWidget *widget,
GtkSignalFunc get_tool_func,
gpointer get_tool_data,
gint *format,
gint *length);
static void gimp_dnd_set_color_data (GtkWidget *widget,
GtkSignalFunc set_color_func,
gpointer set_color_data,
guchar *vals,
gint format,
gint length);
static void gimp_dnd_set_image_data (GtkWidget *widget,
GtkSignalFunc set_image_func,
gpointer set_image_data,
guchar *vals,
gint format,
gint length);
static void gimp_dnd_set_drawable_data (GtkWidget *widget,
GtkSignalFunc set_drawable_func,
gpointer set_drawable_data,
guchar *vals,
gint format,
gint length);
static void gimp_dnd_set_brush_data (GtkWidget *widget,
GtkSignalFunc set_brush_func,
gpointer set_brush_data,
guchar *vals,
gint format,
gint length);
static void gimp_dnd_set_pattern_data (GtkWidget *widget,
GtkSignalFunc set_pattern_func,
gpointer set_pattern_data,
guchar *vals,
gint format,
gint length);
static void gimp_dnd_set_gradient_data (GtkWidget *widget,
GtkSignalFunc set_gradient_func,
gpointer set_gradient_data,
guchar *vals,
gint format,
gint length);
static void gimp_dnd_set_palette_data (GtkWidget *widget,
GtkSignalFunc set_palette_func,
gpointer set_palette_data,
guchar *vals,
gint format,
gint length);
static void gimp_dnd_set_tool_data (GtkWidget *widget,
GtkSignalFunc set_tool_func,
gpointer set_tool_data,
guchar *vals,
gint format,
gint length);
static GimpDndDataDef dnd_data_defs[] =
{
{
{ NULL, 0, -1 },
NULL,
NULL,
NULL,
NULL,
NULL
},
{
GIMP_TARGET_COLOR,
"gimp_dnd_set_color_func",
"gimp_dnd_set_color_data",
gimp_dnd_get_color_icon,
gimp_dnd_get_color_data,
gimp_dnd_set_color_data
},
{
GIMP_TARGET_IMAGE,
"gimp_dnd_set_image_func",
"gimp_dnd_set_image_data",
gimp_dnd_get_viewable_icon,
gimp_dnd_get_image_data,
gimp_dnd_set_image_data,
},
{
GIMP_TARGET_LAYER,
"gimp_dnd_set_layer_func",
"gimp_dnd_set_layer_data",
gimp_dnd_get_viewable_icon,
gimp_dnd_get_drawable_data,
gimp_dnd_set_drawable_data,
},
{
GIMP_TARGET_CHANNEL,
"gimp_dnd_set_channel_func",
"gimp_dnd_set_channel_data",
gimp_dnd_get_viewable_icon,
gimp_dnd_get_drawable_data,
gimp_dnd_set_drawable_data,
},
{
GIMP_TARGET_LAYER_MASK,
"gimp_dnd_set_layer_mask_func",
"gimp_dnd_set_layer_mask_data",
gimp_dnd_get_viewable_icon,
gimp_dnd_get_drawable_data,
gimp_dnd_set_drawable_data,
},
{
GIMP_TARGET_BRUSH,
"gimp_dnd_set_brush_func",
"gimp_dnd_set_brush_data",
gimp_dnd_get_viewable_icon,
gimp_dnd_get_data_data,
gimp_dnd_set_brush_data
},
{
GIMP_TARGET_PATTERN,
"gimp_dnd_set_pattern_func",
"gimp_dnd_set_pattern_data",
gimp_dnd_get_viewable_icon,
gimp_dnd_get_data_data,
gimp_dnd_set_pattern_data
},
{
GIMP_TARGET_GRADIENT,
"gimp_dnd_set_gradient_func",
"gimp_dnd_set_gradient_data",
gimp_dnd_get_viewable_icon,
gimp_dnd_get_data_data,
gimp_dnd_set_gradient_data
},
{
GIMP_TARGET_PALETTE,
"gimp_dnd_set_palette_func",
"gimp_dnd_set_palette_data",
gimp_dnd_get_viewable_icon,
gimp_dnd_get_data_data,
gimp_dnd_set_palette_data
},
{
GIMP_TARGET_TOOL,
"gimp_dnd_set_tool_func",
"gimp_dnd_set_tool_data",
gimp_dnd_get_viewable_icon,
gimp_dnd_get_tool_data,
gimp_dnd_set_tool_data
}
};
/********************************/
/* general data dnd functions */
/********************************/
static void
gimp_dnd_data_drag_begin (GtkWidget *widget,
GdkDragContext *context,
gpointer data)
{
GimpDndDataType data_type;
GtkSignalFunc get_data_func;
gpointer get_data_data;
GtkWidget *icon_widget;
data_type =
(GimpDndDataType) gtk_object_get_data (GTK_OBJECT (widget),
"gimp_dnd_get_data_type");
if (! data_type)
return;
get_data_func =
(GtkSignalFunc) gtk_object_get_data (GTK_OBJECT (widget),
"gimp_dnd_get_data_func");
get_data_data =
(gpointer) gtk_object_get_data (GTK_OBJECT (widget),
"gimp_dnd_get_data_data");
if (! get_data_func)
return;
icon_widget = (* dnd_data_defs[data_type].get_icon_func) (widget,
get_data_func,
get_data_data);
if (icon_widget)
{
GtkWidget *frame;
GtkWidget *window;
window = gtk_window_new (GTK_WINDOW_POPUP);
gtk_widget_realize (window);
frame = gtk_frame_new (NULL);
gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_OUT);
gtk_container_add (GTK_CONTAINER (window), frame);
gtk_widget_show (frame);
gtk_container_add (GTK_CONTAINER (frame), icon_widget);
gtk_widget_show (icon_widget);
gtk_object_set_data_full (GTK_OBJECT (widget),
"gimp-dnd-data-widget",
window,
(GtkDestroyNotify) gtk_widget_destroy);
gtk_drag_set_icon_widget (context, window,
DRAG_ICON_OFFSET, DRAG_ICON_OFFSET);
}
}
static void
gimp_dnd_data_drag_end (GtkWidget *widget,
GdkDragContext *context)
{
gtk_object_set_data (GTK_OBJECT (widget),
"gimp-dnd-data-widget", NULL);
}
static void
gimp_dnd_data_drag_handle (GtkWidget *widget,
GdkDragContext *context,
GtkSelectionData *selection_data,
guint info,
guint time,
gpointer data)
{
GimpDndDataType data_type;
GtkSignalFunc get_data_func;
gpointer get_data_data;
gint format;
guchar *vals;
gint length;
data_type =
(GimpDndDataType) gtk_object_get_data (GTK_OBJECT (widget),
"gimp_dnd_get_data_type");
if (! data_type)
return;
get_data_func =
(GtkSignalFunc) gtk_object_get_data (GTK_OBJECT (widget),
"gimp_dnd_get_data_func");
get_data_data =
(gpointer) gtk_object_get_data (GTK_OBJECT (widget),
"gimp_dnd_get_data_data");
if (! get_data_func)
return;
vals = (* dnd_data_defs[data_type].get_data_func) (widget,
get_data_func,
get_data_data,
&format,
&length);
if (vals)
{
gtk_selection_data_set
(selection_data,
gdk_atom_intern (dnd_data_defs[data_type].target_entry.target, FALSE),
format, vals, length);
g_free (vals);
}
}
static void
gimp_dnd_data_drop_handle (GtkWidget *widget,
GdkDragContext *context,
gint x,
gint y,
GtkSelectionData *selection_data,
guint info,
guint time,
gpointer data)
{
GtkSignalFunc set_data_func;
gpointer set_data_data;
GimpDndDataType data_type;
if (selection_data->length < 0)
return;
for (data_type = GIMP_DND_DATA_COLOR;
data_type <= GIMP_DND_DATA_LAST;
data_type++)
{
if (dnd_data_defs[data_type].target_entry.info == info)
{
set_data_func = (GtkSignalFunc)
gtk_object_get_data (GTK_OBJECT (widget),
dnd_data_defs[data_type].set_data_func_name);
set_data_data = (gpointer)
gtk_object_get_data (GTK_OBJECT (widget),
dnd_data_defs[data_type].set_data_data_name);
if (! set_data_func)
return;
(* dnd_data_defs[data_type].set_data_func) (widget,
set_data_func,
set_data_data,
selection_data->data,
selection_data->format,
selection_data->length);
return;
}
}
}
static void
gimp_dnd_data_source_set (GimpDndDataType data_type,
GtkWidget *widget,
GtkSignalFunc get_data_func,
gpointer get_data_data)
{
gboolean drag_connected;
drag_connected =
(gboolean) gtk_object_get_data (GTK_OBJECT (widget),
"gimp_dnd_drag_connected");
if (! drag_connected)
{
gtk_signal_connect (GTK_OBJECT (widget), "drag_begin",
GTK_SIGNAL_FUNC (gimp_dnd_data_drag_begin),
NULL);
gtk_signal_connect (GTK_OBJECT (widget), "drag_end",
GTK_SIGNAL_FUNC (gimp_dnd_data_drag_end),
NULL);
gtk_signal_connect (GTK_OBJECT (widget), "drag_data_get",
GTK_SIGNAL_FUNC (gimp_dnd_data_drag_handle),
NULL);
gtk_object_set_data (GTK_OBJECT (widget), "gimp_dnd_drag_connected",
(gpointer) TRUE);
}
gtk_object_set_data (GTK_OBJECT (widget), "gimp_dnd_get_data_type",
(gpointer) data_type);
gtk_object_set_data (GTK_OBJECT (widget), "gimp_dnd_get_data_func",
get_data_func);
gtk_object_set_data (GTK_OBJECT (widget), "gimp_dnd_get_data_data",
get_data_data);
}
static void
gimp_dnd_data_source_unset (GtkWidget *widget)
{
gboolean drag_connected;
drag_connected =
(gboolean) gtk_object_get_data (GTK_OBJECT (widget),
"gimp_dnd_drag_connected");
if (! drag_connected)
return;
gtk_object_set_data (GTK_OBJECT (widget), "gimp_dnd_get_data_type", NULL);
gtk_object_set_data (GTK_OBJECT (widget), "gimp_dnd_get_data_func", NULL);
gtk_object_set_data (GTK_OBJECT (widget), "gimp_dnd_get_data_data", NULL);
}
static void
gimp_dnd_data_dest_set (GimpDndDataType data_type,
GtkWidget *widget,
gpointer set_data_func,
gpointer set_data_data)
{
gboolean drop_connected;
drop_connected =
(gboolean) gtk_object_get_data (GTK_OBJECT (widget),
"gimp_dnd_drop_connected");
if (! drop_connected)
{
gtk_signal_connect (GTK_OBJECT (widget), "drag_data_received",
GTK_SIGNAL_FUNC (gimp_dnd_data_drop_handle),
NULL);
gtk_object_set_data (GTK_OBJECT (widget), "gimp_dnd_drop_connected",
(gpointer) TRUE);
}
gtk_object_set_data (GTK_OBJECT (widget),
dnd_data_defs[data_type].set_data_func_name,
set_data_func);
gtk_object_set_data (GTK_OBJECT (widget),
dnd_data_defs[data_type].set_data_data_name,
set_data_data);
}
static void
gimp_dnd_data_dest_unset (GimpDndDataType data_type,
GtkWidget *widget)
{
gboolean drop_connected;
drop_connected =
(gboolean) gtk_object_get_data (GTK_OBJECT (widget),
"gimp_dnd_drop_connected");
if (! drop_connected)
return;
gtk_object_set_data (GTK_OBJECT (widget),
dnd_data_defs[data_type].set_data_func_name,
NULL);
gtk_object_set_data (GTK_OBJECT (widget),
dnd_data_defs[data_type].set_data_data_name,
NULL);
}
/*************************/
/* color dnd functions */
/*************************/
static GtkWidget *
gimp_dnd_get_color_icon (GtkWidget *widget,
GtkSignalFunc get_color_func,
gpointer get_color_data)
{
GtkWidget *color_area;
GimpRGB color;
(* (GimpDndDragColorFunc) get_color_func) (widget, &color,
get_color_data);
color_area = gimp_color_area_new (&color, TRUE, 0);
gtk_widget_set_usize (color_area, DRAG_PREVIEW_SIZE, DRAG_PREVIEW_SIZE);
return color_area;
}
static guchar *
gimp_dnd_get_color_data (GtkWidget *widget,
GtkSignalFunc get_color_func,
gpointer get_color_data,
gint *format,
gint *length)
{
guint16 *vals;
GimpRGB color;
guchar r, g, b, a;
(* (GimpDndDragColorFunc) get_color_func) (widget, &color,
get_color_data);
vals = g_new (guint16, 4);
gimp_rgba_get_uchar (&color, &r, &g, &b, &a);
vals[0] = r + (r << 8);
vals[1] = g + (g << 8);
vals[2] = b + (b << 8);
vals[3] = a + (a << 8);
*format = 16;
*length = 8;
return (guchar *) vals;
}
static void
gimp_dnd_set_color_data (GtkWidget *widget,
GtkSignalFunc set_color_func,
gpointer set_color_data,
guchar *vals,
gint format,
gint length)
{
guint16 *color_vals;
GimpRGB color;
if ((format != 16) || (length != 8))
{
g_warning ("Received invalid color data\n");
return;
}
color_vals = (guint16 *) vals;
gimp_rgba_set_uchar (&color,
(guchar) (color_vals[0] >> 8),
(guchar) (color_vals[1] >> 8),
(guchar) (color_vals[2] >> 8),
(guchar) (color_vals[3] >> 8));
(* (GimpDndDropColorFunc) set_color_func) (widget, &color,
set_color_data);
}
void
gimp_dnd_color_source_set (GtkWidget *widget,
GimpDndDragColorFunc get_color_func,
gpointer data)
{
gimp_dnd_data_source_set (GIMP_DND_DATA_COLOR, widget,
GTK_SIGNAL_FUNC (get_color_func),
data);
}
void
gimp_dnd_color_dest_set (GtkWidget *widget,
GimpDndDropColorFunc set_color_func,
gpointer data)
{
gimp_dnd_data_dest_set (GIMP_DND_DATA_COLOR, widget,
GTK_SIGNAL_FUNC (set_color_func),
data);
}
void
gimp_dnd_color_dest_unset (GtkWidget *widget)
{
gimp_dnd_data_dest_unset (GIMP_DND_DATA_COLOR, widget);
}
/*********************************************/
/* GimpViewable (by GtkType) dnd functions */
/*********************************************/
static GtkWidget *
gimp_dnd_get_viewable_icon (GtkWidget *widget,
GtkSignalFunc get_viewable_func,
gpointer get_viewable_data)
{
GtkWidget *preview;
GimpViewable *viewable;
viewable = (* (GimpDndDragViewableFunc) get_viewable_func) (widget,
get_viewable_data);
if (! viewable)
return NULL;
preview = gimp_preview_new (viewable, DRAG_PREVIEW_SIZE, 0, TRUE);
return preview;
}
static GimpDndDataType
gimp_dnd_data_type_get_by_gtk_type (GtkType type)
{
GimpDndDataType dnd_type = GIMP_DND_DATA_NONE;
if (gtk_type_is_a (type, GIMP_TYPE_IMAGE))
{
dnd_type = GIMP_DND_DATA_IMAGE;
}
else if (gtk_type_is_a (type, GIMP_TYPE_LAYER))
{
dnd_type = GIMP_DND_DATA_LAYER;
}
else if (gtk_type_is_a (type, GIMP_TYPE_LAYER_MASK))
{
dnd_type = GIMP_DND_DATA_LAYER_MASK;
}
else if (gtk_type_is_a (type, GIMP_TYPE_CHANNEL))
{
dnd_type = GIMP_DND_DATA_CHANNEL;
}
else if (gtk_type_is_a (type, GIMP_TYPE_BRUSH))
{
dnd_type = GIMP_DND_DATA_BRUSH;
}
else if (gtk_type_is_a (type, GIMP_TYPE_PATTERN))
{
dnd_type = GIMP_DND_DATA_PATTERN;
}
else if (gtk_type_is_a (type, GIMP_TYPE_GRADIENT))
{
dnd_type = GIMP_DND_DATA_GRADIENT;
}
else if (gtk_type_is_a (type, GIMP_TYPE_PALETTE))
{
dnd_type = GIMP_DND_DATA_PALETTE;
}
else if (gtk_type_is_a (type, GIMP_TYPE_TOOL_INFO))
{
dnd_type = GIMP_DND_DATA_TOOL;
}
else
{
g_warning ("%s(): unsupported GtkType \"%s\"",
G_GNUC_FUNCTION, gtk_type_name (type));
}
return dnd_type;
}
void
gimp_gtk_drag_source_set_by_type (GtkWidget *widget,
GdkModifierType start_button_mask,
GtkType type,
GdkDragAction actions)
{
GimpDndDataType dnd_type;
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_WIDGET (widget));
dnd_type = gimp_dnd_data_type_get_by_gtk_type (type);
if (dnd_type == GIMP_DND_DATA_NONE)
return;
gtk_drag_source_set (widget, start_button_mask,
&dnd_data_defs[dnd_type].target_entry,
1,
actions);
}
void
gimp_gtk_drag_dest_set_by_type (GtkWidget *widget,
GtkDestDefaults flags,
GtkType type,
GdkDragAction actions)
{
GimpDndDataType dnd_type;
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_WIDGET (widget));
dnd_type = gimp_dnd_data_type_get_by_gtk_type (type);
if (dnd_type == GIMP_DND_DATA_NONE)
return;
gtk_drag_dest_set (widget, flags,
&dnd_data_defs[dnd_type].target_entry,
1,
actions);
}
void
gimp_dnd_viewable_source_set (GtkWidget *widget,
GtkType type,
GimpDndDragViewableFunc get_viewable_func,
gpointer data)
{
GimpDndDataType dnd_type;
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_WIDGET (widget));
g_return_if_fail (get_viewable_func != NULL);
dnd_type = gimp_dnd_data_type_get_by_gtk_type (type);
if (dnd_type == GIMP_DND_DATA_NONE)
return;
gimp_dnd_data_source_set (dnd_type, widget,
GTK_SIGNAL_FUNC (get_viewable_func),
data);
}
void
gimp_dnd_viewable_source_unset (GtkWidget *widget,
GtkType type)
{
GimpDndDataType dnd_type;
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_WIDGET (widget));
dnd_type = gimp_dnd_data_type_get_by_gtk_type (type);
if (dnd_type == GIMP_DND_DATA_NONE)
return;
gimp_dnd_data_source_unset (widget);
}
void
gimp_dnd_viewable_dest_set (GtkWidget *widget,
GtkType type,
GimpDndDropViewableFunc set_viewable_func,
gpointer data)
{
GimpDndDataType dnd_type;
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_WIDGET (widget));
g_return_if_fail (set_viewable_func != NULL);
dnd_type = gimp_dnd_data_type_get_by_gtk_type (type);
if (dnd_type == GIMP_DND_DATA_NONE)
return;
gimp_dnd_data_dest_set (dnd_type, widget,
GTK_SIGNAL_FUNC (set_viewable_func),
data);
}
void
gimp_dnd_viewable_dest_unset (GtkWidget *widget,
GtkType type)
{
GimpDndDataType dnd_type;
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_WIDGET (widget));
dnd_type = gimp_dnd_data_type_get_by_gtk_type (type);
if (dnd_type == GIMP_DND_DATA_NONE)
return;
gimp_dnd_data_dest_unset (dnd_type, widget);
}
GimpViewable *
gimp_dnd_get_drag_data (GtkWidget *widget)
{
GimpDndDataType data_type;
GimpDndDragViewableFunc get_data_func;
gpointer get_data_data;
g_return_val_if_fail (widget != NULL, NULL);
g_return_val_if_fail (GTK_IS_WIDGET (widget), NULL);
data_type =
(GimpDndDataType) gtk_object_get_data (GTK_OBJECT (widget),
"gimp_dnd_get_data_type");
if (! data_type)
return NULL;
get_data_func =
(GimpDndDragViewableFunc) gtk_object_get_data (GTK_OBJECT (widget),
"gimp_dnd_get_data_func");
get_data_data =
(gpointer) gtk_object_get_data (GTK_OBJECT (widget),
"gimp_dnd_get_data_data");
if (! get_data_func)
return NULL;
return (GimpViewable *) (* get_data_func) (widget, get_data_data);
}
/*************************/
/* image dnd functions */
/*************************/
static guchar *
gimp_dnd_get_image_data (GtkWidget *widget,
GtkSignalFunc get_image_func,
gpointer get_image_data,
gint *format,
gint *length)
{
GimpImage *gimage;
gchar *id;
gimage = (GimpImage *)
(* (GimpDndDragViewableFunc) get_image_func) (widget, get_image_data);
if (! gimage)
return NULL;
id = g_strdup_printf ("%d", gimp_image_get_ID (gimage));
*format = 8;
*length = strlen (id) + 1;
return (guchar *) id;
}
static void
gimp_dnd_set_image_data (GtkWidget *widget,
GtkSignalFunc set_image_func,
gpointer set_image_data,
guchar *vals,
gint format,
gint length)
{
GimpImage *gimage;
gchar *id;
gint ID;
if ((format != 8) || (length < 1))
{
g_warning ("%s(): received invalid image ID data", G_GNUC_FUNCTION);
return;
}
id = (gchar *) vals;
ID = atoi (id);
if (! ID)
return;
gimage = gimp_image_get_by_ID (ID);
if (gimage)
(* (GimpDndDropViewableFunc) set_image_func) (widget,
GIMP_VIEWABLE (gimage),
set_image_data);
}
/****************************/
/* drawable dnd functions */
/****************************/
static guchar *
gimp_dnd_get_drawable_data (GtkWidget *widget,
GtkSignalFunc get_drawable_func,
gpointer get_drawable_data,
gint *format,
gint *length)
{
GimpDrawable *drawable;
gchar *id;
drawable = (GimpDrawable *)
(* (GimpDndDragViewableFunc) get_drawable_func) (widget, get_drawable_data);
if (! drawable)
return NULL;
id = g_strdup_printf ("%d", gimp_drawable_get_ID (drawable));
*format = 8;
*length = strlen (id) + 1;
return (guchar *) id;
}
static void
gimp_dnd_set_drawable_data (GtkWidget *widget,
GtkSignalFunc set_drawable_func,
gpointer set_drawable_data,
guchar *vals,
gint format,
gint length)
{
GimpDrawable *drawable;
gchar *id;
gint ID;
if ((format != 8) || (length < 1))
{
g_warning ("Received invalid drawable ID data");
return;
}
id = (gchar *) vals;
ID = atoi (id);
if (! ID)
return;
drawable = gimp_drawable_get_by_ID (ID);
if (drawable)
(* (GimpDndDropViewableFunc) set_drawable_func) (widget,
GIMP_VIEWABLE (drawable),
set_drawable_data);
}
/****************************/
/* GimpData dnd functions */
/****************************/
static guchar *
gimp_dnd_get_data_data (GtkWidget *widget,
GtkSignalFunc get_data_func,
gpointer get_data_data,
gint *format,
gint *length)
{
GimpData *data;
gchar *name;
data = (GimpData *)
(* (GimpDndDragViewableFunc) get_data_func) (widget, get_data_data);
if (! data)
return NULL;
name = g_strdup (gimp_object_get_name (GIMP_OBJECT (data)));
if (! name)
return NULL;
*format = 8;
*length = strlen (name) + 1;
return (guchar *) name;
}
/*************************/
/* brush dnd functions */
/*************************/
static void
gimp_dnd_set_brush_data (GtkWidget *widget,
GtkSignalFunc set_brush_func,
gpointer set_brush_data,
guchar *vals,
gint format,
gint length)
{
GimpBrush *brush;
gchar *name;
if ((format != 8) || (length < 1))
{
g_warning ("Received invalid brush data\n");
return;
}
name = (gchar *) vals;
if (strcmp (name, "Standard") == 0)
brush = GIMP_BRUSH (gimp_brush_get_standard ());
else
brush = (GimpBrush *)
gimp_container_get_child_by_name (global_brush_factory->container,
name);
if (brush)
(* (GimpDndDropViewableFunc) set_brush_func) (widget,
GIMP_VIEWABLE (brush),
set_brush_data);
}
/***************************/
/* pattern dnd functions */
/***************************/
static void
gimp_dnd_set_pattern_data (GtkWidget *widget,
GtkSignalFunc set_pattern_func,
gpointer set_pattern_data,
guchar *vals,
gint format,
gint length)
{
GimpPattern *pattern;
gchar *name;
if ((format != 8) || (length < 1))
{
g_warning ("Received invalid pattern data\n");
return;
}
name = (gchar *) vals;
if (strcmp (name, "Standard") == 0)
pattern = GIMP_PATTERN (gimp_pattern_get_standard ());
else
pattern = (GimpPattern *)
gimp_container_get_child_by_name (global_pattern_factory->container,
name);
if (pattern)
(* (GimpDndDropViewableFunc) set_pattern_func) (widget,
GIMP_VIEWABLE (pattern),
set_pattern_data);
}
/****************************/
/* gradient dnd functions */
/****************************/
static void
gimp_dnd_set_gradient_data (GtkWidget *widget,
GtkSignalFunc set_gradient_func,
gpointer set_gradient_data,
guchar *vals,
gint format,
gint length)
{
GimpGradient *gradient;
gchar *name;
if ((format != 8) || (length < 1))
{
g_warning ("Received invalid gradient data\n");
return;
}
name = (gchar *) vals;
if (strcmp (name, "Standard") == 0)
gradient = GIMP_GRADIENT (gimp_gradient_get_standard ());
else
gradient = (GimpGradient *)
gimp_container_get_child_by_name (global_gradient_factory->container,
name);
if (gradient)
(* (GimpDndDropViewableFunc) set_gradient_func) (widget,
GIMP_VIEWABLE (gradient),
set_gradient_data);
}
/***************************/
/* palette dnd functions */
/***************************/
static void
gimp_dnd_set_palette_data (GtkWidget *widget,
GtkSignalFunc set_palette_func,
gpointer set_palette_data,
guchar *vals,
gint format,
gint length)
{
GimpPalette *palette;
gchar *name;
if ((format != 8) || (length < 1))
{
g_warning ("Received invalid palette data\n");
return;
}
name = (gchar *) vals;
if (strcmp (name, "Standard") == 0)
palette = GIMP_PALETTE (gimp_palette_get_standard ());
else
palette = (GimpPalette *)
gimp_container_get_child_by_name (global_palette_factory->container,
name);
if (palette)
(* (GimpDndDropViewableFunc) set_palette_func) (widget,
GIMP_VIEWABLE (palette),
set_palette_data);
}
/************************/
/* tool dnd functions */
/************************/
static guchar *
gimp_dnd_get_tool_data (GtkWidget *widget,
GtkSignalFunc get_tool_func,
gpointer get_tool_data,
gint *format,
gint *length)
{
GimpToolInfo *tool_info;
gchar *name;
tool_info = (GimpToolInfo *)
(* (GimpDndDragViewableFunc) get_tool_func) (widget, get_tool_data);
if (! tool_info)
return NULL;
name = g_strdup (gimp_object_get_name (GIMP_OBJECT (tool_info)));
if (! name)
return NULL;
*format = 8;
*length = strlen (name) + 1;
return (guchar *) name;
}
static void
gimp_dnd_set_tool_data (GtkWidget *widget,
GtkSignalFunc set_tool_func,
gpointer set_tool_data,
guchar *vals,
gint format,
gint length)
{
GimpToolInfo *tool_info;
gchar *name;
if ((format != 8) || (length < 1))
{
g_warning ("Received invalid tool data\n");
return;
}
name = (gchar *) vals;
if (strcmp (name, "gimp:standard_tool") == 0)
tool_info = gimp_tool_info_get_standard ();
else
tool_info = (GimpToolInfo *)
gimp_container_get_child_by_name (global_tool_info_list,
name);
if (tool_info)
(* (GimpDndDropViewableFunc) set_tool_func) (widget,
GIMP_VIEWABLE (tool_info),
set_tool_data);
}
/****************************/
/* drawable dnd functions */
/****************************/
void
gimp_dnd_set_drawable_preview_icon (GtkWidget *widget,
GdkDragContext *context,
GimpDrawable *drawable)
{
GtkWidget *window;
GtkWidget *frame;
GtkWidget *preview;
gboolean drag_connected;
TempBuf *tmpbuf;
gint bpp;
gint x, y;
guchar *src;
gdouble r, g, b, a;
gdouble c0, c1;
guchar *p0, *p1, *even, *odd;
gint width;
gint height;
gdouble ratio;
if (! preview_size)
return;
if (gimp_drawable_width (drawable) > gimp_drawable_height (drawable))
ratio = (gdouble) DRAG_PREVIEW_SIZE /
(gdouble) (gimp_drawable_width (drawable));
else
ratio = (gdouble) DRAG_PREVIEW_SIZE /
(gdouble) (gimp_drawable_height (drawable));
width = (gint) (ratio * gimp_drawable_width (drawable));
height = (gint) (ratio * gimp_drawable_height (drawable));
if (width < 1)
width = 1;
if (height < 1)
height = 1;
preview = gtk_preview_new (GTK_PREVIEW_COLOR);
gtk_preview_size (GTK_PREVIEW (preview), width, height);
tmpbuf = gimp_viewable_get_preview (GIMP_VIEWABLE (drawable), width, height);
if (! tmpbuf)
{
gtk_widget_destroy (preview);
return;
}
bpp = tmpbuf->bytes;
/* Draw the thumbnail with checks */
src = temp_buf_data (tmpbuf);
even = g_new (guchar, width * 3);
odd = g_new (guchar, width * 3);
for (y = 0; y < height; y++)
{
p0 = even;
p1 = odd;
for (x = 0; x < width; x++)
{
if (bpp == 4)
{
r = ((gdouble) src[x*4+0]) / 255.0;
g = ((gdouble) src[x*4+1]) / 255.0;
b = ((gdouble) src[x*4+2]) / 255.0;
a = ((gdouble) src[x*4+3]) / 255.0;
}
else if (bpp == 3)
{
r = ((gdouble) src[x*3+0]) / 255.0;
g = ((gdouble) src[x*3+1]) / 255.0;
b = ((gdouble) src[x*3+2]) / 255.0;
a = 1.0;
}
else
{
r = ((gdouble) src[x*bpp+0]) / 255.0;
g = b = r;
if (bpp == 2)
a = ((gdouble) src[x*bpp+1]) / 255.0;
else
a = 1.0;
}
if ((x / GIMP_CHECK_SIZE_SM) & 1)
{
c0 = GIMP_CHECK_LIGHT;
c1 = GIMP_CHECK_DARK;
}
else
{
c0 = GIMP_CHECK_DARK;
c1 = GIMP_CHECK_LIGHT;
}
*p0++ = (c0 + (r - c0) * a) * 255.0;
*p0++ = (c0 + (g - c0) * a) * 255.0;
*p0++ = (c0 + (b - c0) * a) * 255.0;
*p1++ = (c1 + (r - c1) * a) * 255.0;
*p1++ = (c1 + (g - c1) * a) * 255.0;
*p1++ = (c1 + (b - c1) * a) * 255.0;
}
if ((y / GIMP_CHECK_SIZE_SM) & 1)
{
gtk_preview_draw_row (GTK_PREVIEW (preview), odd,
0, y, width);
}
else
{
gtk_preview_draw_row (GTK_PREVIEW (preview), even,
0, y, width);
}
src += width * bpp;
}
g_free (even);
g_free (odd);
window = gtk_window_new (GTK_WINDOW_POPUP);
gtk_widget_realize (window);
frame = gtk_frame_new (NULL);
gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_OUT);
gtk_container_add (GTK_CONTAINER (window), frame);
gtk_widget_show (frame);
gtk_container_add (GTK_CONTAINER (frame), preview);
gtk_widget_show (preview);
drag_connected =
(gboolean) gtk_object_get_data (GTK_OBJECT (widget),
"gimp_dnd_drag_connected");
if (! drag_connected)
{
gtk_signal_connect (GTK_OBJECT (widget), "drag_end",
GTK_SIGNAL_FUNC (gimp_dnd_data_drag_end),
NULL);
gtk_object_set_data (GTK_OBJECT (widget), "gimp_dnd_drag_connected",
(gpointer) TRUE);
}
gtk_object_set_data_full (GTK_OBJECT (widget),
"gimp-dnd-data-widget",
window,
(GtkDestroyNotify) gtk_widget_destroy);
gtk_drag_set_icon_widget (context, window,
DRAG_ICON_OFFSET, DRAG_ICON_OFFSET);
}
/******************************/
/* file / url dnd functions */
/******************************/
static void
gimp_dnd_file_open_files (gchar *buffer)
{
gchar name_buffer[1024];
const gchar *data_type = "file:";
const gint sig_len = strlen (data_type);
while (*buffer)
{
gchar *name = name_buffer;
gint len = 0;
while ((*buffer != 0) && (*buffer != '\n') && len < 1024)
{
*name++ = *buffer++;
len++;
}
if (len == 0)
break;
if (*(name - 1) == 0xd) /* gmc uses RETURN+NEWLINE as delimiter */
*(name - 1) = '\0';
else
*name = '\0';
name = name_buffer;
if ((sig_len < len) && (! strncmp (name, data_type, sig_len)))
name += sig_len;
if (name && strlen (name) > 2)
file_open (name, name);
if (*buffer)
buffer++;
}
}
static void
gimp_dnd_file_drag_data_received (GtkWidget *widget,
GdkDragContext *context,
gint x,
gint y,
GtkSelectionData *data,
guint info,
guint time)
{
switch (context->action)
{
case GDK_ACTION_DEFAULT:
case GDK_ACTION_COPY:
case GDK_ACTION_MOVE:
case GDK_ACTION_LINK:
case GDK_ACTION_ASK:
default:
gimp_dnd_file_open_files ((gchar *) data->data);
gtk_drag_finish (context, TRUE, FALSE, time);
break;
}
return;
}
void
gimp_dnd_file_dest_set (GtkWidget *widget)
{
gtk_signal_connect (GTK_OBJECT (widget), "drag_data_received",
GTK_SIGNAL_FUNC (gimp_dnd_file_drag_data_received),
widget);
}
Reference in New Issue View Git Blame Copy Permalink