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abstract out the drag and droppable image widget from the contact list

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2004-01-30  Chris Toshok  <toshok@ximian.com>

	* e-image-chooser.[ch]: abstract out the drag and droppable image
	widget from the contact list editor and stick it here.  There's
	some code for a "Browse..." button here but it's not enabled.

	* Makefile.am (widgetsinclude_HEADERS): add e-image-chooser.h.
	(libemiscwidgets_la_SOURCES): add e-image-chooser.c

svn path=/trunk/; revision=24549
This commit is contained in:
Chris Toshok
2004-01-30 21:44:46 +00:00
committed by Chris Toshok
parent af28998755
commit e8ab6acfb9
4 changed files with 554 additions and 0 deletions
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9
widgets/misc/ChangeLog
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@ -1,3 +1,12 @@
2004-01-30 Chris Toshok <toshok@ximian.com>
* e-image-chooser.[ch]: abstract out the drag and droppable image
widget from the contact list editor and stick it here. There's
some code for a "Browse..." button here but it's not enabled.
* Makefile.am (widgetsinclude_HEADERS): add e-image-chooser.h.
(libemiscwidgets_la_SOURCES): add e-image-chooser.c
2004-01-30 Jeffrey Stedfast <fejj@ximian.com>
* e-filter-bar.c (get_property): Only save the search-bar state OR

2
widgets/misc/Makefile.am
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@ -28,6 +28,7 @@ widgetsinclude_HEADERS = \
e-dateedit.h \
e-dropdown-button.h \
e-expander.h \
e-image-chooser.h \
e-map.h \
e-multi-config-dialog.h \
e-search-bar.h \
@ -52,6 +53,7 @@ libemiscwidgets_la_SOURCES = \
e-dateedit.c \
e-dropdown-button.c \
e-expander.c \
e-image-chooser.c \
e-map.c \
e-multi-config-dialog.c \
e-search-bar.c \

482
widgets/misc/e-image-chooser.c Normal file
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@ -0,0 +1,482 @@
/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
/* e-image-chooser.c
* Copyright (C) 2004 Novell, Inc.
* Author: Chris Toshok <toshok@ximian.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of version 2 of the GNU General Public
* License as published by the Free Software Foundation.
*
* 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 library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#include <config.h>
#include <stdio.h>
#include <string.h>
#include <gtk/gtkframe.h>
#include <gtk/gtkimage.h>
#include <gtk/gtkbutton.h>
#include <gtk/gtkdnd.h>
#include <libgnomevfs/gnome-vfs-ops.h>
#include <libgnome/gnome-i18n.h>
#include "e-image-chooser.h"
#include "e-util-marshal.h"
struct _EImageChooserPrivate {
GtkWidget *frame;
GtkWidget *image;
GtkWidget *browse_button;
char *image_buf;
int image_buf_size;
int image_width;
int image_height;
gboolean editable;
};
enum {
CHANGED,
LAST_SIGNAL
};
static gint image_chooser_signals [LAST_SIGNAL] = { 0 };
static void e_image_chooser_init (EImageChooser *chooser);
static void e_image_chooser_class_init (EImageChooserClass *klass);
#if 0
static void e_image_chooser_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec);
static void e_image_chooser_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec);
#endif
static void e_image_chooser_dispose (GObject *object);
static gboolean image_drag_motion_cb (GtkWidget *widget,
GdkDragContext *context,
gint x, gint y, guint time, EImageChooser *chooser);
static void image_drag_leave_cb (GtkWidget *widget,
GdkDragContext *context,
guint time, EImageChooser *chooser);
static gboolean image_drag_drop_cb (GtkWidget *widget,
GdkDragContext *context,
gint x, gint y, guint time, EImageChooser *chooser);
static void image_drag_data_received_cb (GtkWidget *widget,
GdkDragContext *context,
gint x, gint y,
GtkSelectionData *selection_data,
guint info, guint time, EImageChooser *chooser);
static GtkObjectClass *parent_class = NULL;
#define PARENT_TYPE GTK_TYPE_VBOX
enum DndTargetType {
DND_TARGET_TYPE_URI_LIST
};
#define URI_LIST_TYPE "text/uri-list"
static GtkTargetEntry image_drag_types[] = {
{ URI_LIST_TYPE, 0, DND_TARGET_TYPE_URI_LIST },
};
static const int num_image_drag_types = sizeof (image_drag_types) / sizeof (image_drag_types[0]);
GtkWidget *
e_image_chooser_new (void)
{
return g_object_new (E_TYPE_IMAGE_CHOOSER, NULL);
}
GType
e_image_chooser_get_type (void)
{
static GType eic_type = 0;
if (!eic_type) {
static const GTypeInfo eic_info = {
sizeof (EImageChooserClass),
NULL, /* base_init */
NULL, /* base_finalize */
(GClassInitFunc) e_image_chooser_class_init,
NULL, /* class_finalize */
NULL, /* class_data */
sizeof (EImageChooser),
0, /* n_preallocs */
(GInstanceInitFunc) e_image_chooser_init,
};
eic_type = g_type_register_static (PARENT_TYPE, "EImageChooser", &eic_info, 0);
}
return eic_type;
}
static void
e_image_chooser_class_init (EImageChooserClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
parent_class = g_type_class_ref (PARENT_TYPE);
image_chooser_signals [CHANGED] =
g_signal_new ("changed",
G_OBJECT_CLASS_TYPE (object_class),
G_SIGNAL_RUN_FIRST,
G_STRUCT_OFFSET (EImageChooserClass, changed),
NULL, NULL,
e_util_marshal_NONE__NONE,
GTK_TYPE_NONE, 0);
/*
object_class->set_property = e_image_chooser_set_property;
object_class->get_property = e_image_chooser_get_property;
*/
object_class->dispose = e_image_chooser_dispose;
}
#if UI_CHANGE_OK
static void
browse_for_image_cb (GtkWidget *button, gpointer data)
{
}
#endif
static void
e_image_chooser_init (EImageChooser *chooser)
{
EImageChooserPrivate *priv;
priv = chooser->priv = g_new0 (EImageChooserPrivate, 1);
priv->frame = gtk_frame_new ("");
priv->image = gtk_image_new ();
#if UI_CHANGE_OK
priv->browse_button = gtk_button_new_with_label (_("Choose Image"));
#endif
gtk_frame_set_shadow_type (GTK_FRAME (priv->frame), GTK_SHADOW_NONE);
gtk_container_add (GTK_CONTAINER (priv->frame), priv->image);
gtk_box_set_homogeneous (GTK_BOX (chooser), FALSE);
gtk_box_pack_start (GTK_BOX (chooser), priv->frame, TRUE, TRUE, 0);
#if UI_CHANGE_OK
gtk_box_pack_start (GTK_BOX (chooser), priv->browse_button, FALSE, FALSE, 0);
g_signal_connect (priv->browse_button, "clicked", G_CALLBACK (browse_for_image_cb), NULL);
#endif
gtk_drag_dest_set (priv->image, 0, image_drag_types, num_image_drag_types, GDK_ACTION_COPY);
g_signal_connect (priv->image,
"drag_motion", G_CALLBACK (image_drag_motion_cb), chooser);
g_signal_connect (priv->image,
"drag_leave", G_CALLBACK (image_drag_leave_cb), chooser);
g_signal_connect (priv->image,
"drag_drop", G_CALLBACK (image_drag_drop_cb), chooser);
g_signal_connect (priv->image,
"drag_data_received", G_CALLBACK (image_drag_data_received_cb), chooser);
gtk_widget_show_all (priv->frame);
#if UI_CHANGE_OK
gtk_widget_show (priv->browse_button);
#endif
/* we default to being editable */
priv->editable = TRUE;
}
static void
e_image_chooser_dispose (GObject *object)
{
EImageChooser *eic = E_IMAGE_CHOOSER (object);
if (eic->priv) {
EImageChooserPrivate *priv = eic->priv;
if (priv->image_buf) {
g_free (priv->image_buf);
priv->image_buf = NULL;
}
g_free (eic->priv);
eic->priv = NULL;
}
if (G_OBJECT_CLASS (parent_class)->dispose)
(* G_OBJECT_CLASS (parent_class)->dispose) (object);
}
static gboolean
set_image_from_data (EImageChooser *chooser,
char *data, int length)
{
gboolean rv = FALSE;
GdkPixbufLoader *loader = gdk_pixbuf_loader_new ();
GdkPixbuf *pixbuf;
gdk_pixbuf_loader_write (loader, data, length, NULL);
pixbuf = gdk_pixbuf_loader_get_pixbuf (loader);
if (pixbuf)
gdk_pixbuf_ref (pixbuf);
gdk_pixbuf_loader_close (loader, NULL);
g_object_unref (loader);
if (pixbuf) {
GdkPixbuf *scaled;
GdkPixbuf *composite;
float scale;
int new_height, new_width;
new_height = gdk_pixbuf_get_height (pixbuf);
new_width = gdk_pixbuf_get_width (pixbuf);
printf ("new dimensions = (%d,%d)\n", new_width, new_height);
if (chooser->priv->image_height < new_height
|| chooser->priv->image_width < new_width) {
/* we need to scale down */
printf ("we need to scale down\n");
if (new_height > new_width)
scale = (float)chooser->priv->image_height / new_height;
else
scale = (float)chooser->priv->image_width / new_width;
}
else {
/* we need to scale up */
printf ("we need to scale up\n");
if (new_height > new_width)
scale = (float)new_height / chooser->priv->image_height;
else
scale = (float)new_width / chooser->priv->image_width;
}
printf ("scale = %g\n", scale);
new_width *= scale;
new_height *= scale;
new_width = MIN (new_width, chooser->priv->image_width);
new_height = MIN (new_height, chooser->priv->image_height);
printf ("new scaled dimensions = (%d,%d)\n", new_width, new_height);
scaled = gdk_pixbuf_scale_simple (pixbuf,
new_width, new_height,
GDK_INTERP_BILINEAR);
composite = gdk_pixbuf_new (GDK_COLORSPACE_RGB, TRUE, gdk_pixbuf_get_bits_per_sample (pixbuf),
chooser->priv->image_width, chooser->priv->image_height);
gdk_pixbuf_fill (composite, 0x00000000);
gdk_pixbuf_copy_area (scaled, 0, 0, new_width, new_height,
composite,
chooser->priv->image_width / 2 - new_width / 2,
chooser->priv->image_height / 2 - new_height / 2);
gtk_image_set_from_pixbuf (GTK_IMAGE (chooser->priv->image), composite);
gdk_pixbuf_unref (pixbuf);
gdk_pixbuf_unref (scaled);
gdk_pixbuf_unref (composite);
rv = TRUE;
}
return rv;
}
static gboolean
image_drag_motion_cb (GtkWidget *widget,
GdkDragContext *context,
gint x, gint y, guint time, EImageChooser *chooser)
{
GList *p;
if (!chooser->priv->editable)
return FALSE;
for (p = context->targets; p != NULL; p = p->next) {
char *possible_type;
possible_type = gdk_atom_name (GDK_POINTER_TO_ATOM (p->data));
if (!strcmp (possible_type, URI_LIST_TYPE)) {
g_free (possible_type);
gdk_drag_status (context, GDK_ACTION_COPY, time);
gtk_frame_set_shadow_type (GTK_FRAME (chooser->priv->frame), GTK_SHADOW_IN);
return TRUE;
}
g_free (possible_type);
}
gtk_frame_set_shadow_type (GTK_FRAME (chooser->priv->frame), GTK_SHADOW_NONE);
return FALSE;
}
static void
image_drag_leave_cb (GtkWidget *widget,
GdkDragContext *context,
guint time, EImageChooser *chooser)
{
gtk_frame_set_shadow_type (GTK_FRAME (chooser->priv->frame), GTK_SHADOW_NONE);
}
static gboolean
image_drag_drop_cb (GtkWidget *widget,
GdkDragContext *context,
gint x, gint y, guint time, EImageChooser *chooser)
{
GList *p;
if (!chooser->priv->editable)
return FALSE;
if (context->targets == NULL) {
gtk_frame_set_shadow_type (GTK_FRAME (chooser->priv->frame), GTK_SHADOW_NONE);
return FALSE;
}
for (p = context->targets; p != NULL; p = p->next) {
char *possible_type;
possible_type = gdk_atom_name (GDK_POINTER_TO_ATOM (p->data));
if (!strcmp (possible_type, URI_LIST_TYPE)) {
g_free (possible_type);
gtk_drag_get_data (widget, context,
GDK_POINTER_TO_ATOM (p->data),
time);
gtk_frame_set_shadow_type (GTK_FRAME (chooser->priv->frame), GTK_SHADOW_NONE);
return TRUE;
}
g_free (possible_type);
}
gtk_frame_set_shadow_type (GTK_FRAME (chooser->priv->frame), GTK_SHADOW_NONE);
return FALSE;
}
static void
image_drag_data_received_cb (GtkWidget *widget,
GdkDragContext *context,
gint x, gint y,
GtkSelectionData *selection_data,
guint info, guint time, EImageChooser *chooser)
{
char *target_type;
gboolean changed = FALSE;
gboolean handled = FALSE;
target_type = gdk_atom_name (selection_data->target);
printf ("target_type == %s\n", target_type);
if (!strcmp (target_type, URI_LIST_TYPE)) {
GnomeVFSResult result;
GnomeVFSHandle *handle;
char *uri;
char *nl = strstr (selection_data->data, "\r\n");
char *buf = NULL;
GnomeVFSFileInfo info;
if (nl)
uri = g_strndup (selection_data->data, nl - (char*)selection_data->data);
else
uri = g_strdup (selection_data->data);
printf ("uri == %s\n", uri);
result = gnome_vfs_open (&handle, uri, GNOME_VFS_OPEN_READ);
if (result == GNOME_VFS_OK) {
result = gnome_vfs_get_file_info_from_handle (handle, &info, GNOME_VFS_FILE_INFO_DEFAULT);
if (result == GNOME_VFS_OK) {
GnomeVFSFileSize num_left;
GnomeVFSFileSize num_read;
GnomeVFSFileSize total_read;
printf ("file size = %d\n", (int)info.size);
buf = g_malloc (info.size);
num_left = info.size;
total_read = 0;
while ((result = gnome_vfs_read (handle, buf + total_read, num_left, &num_read)) == GNOME_VFS_OK) {
num_left -= num_read;
total_read += num_read;
}
printf ("read %d bytes\n", (int)total_read);
if (set_image_from_data (chooser, buf, total_read)) {
changed = TRUE;
handled = TRUE;
g_free (chooser->priv->image_buf);
chooser->priv->image_buf = buf;
chooser->priv->image_buf_size = total_read;
}
else {
/* XXX we should pop up a
warning dialog here */
g_free (buf);
}
}
gnome_vfs_close (handle);
}
else {
printf ("gnome_vfs_open failed (%s)\n", gnome_vfs_result_to_string (result));
}
g_free (uri);
if (changed) {
g_signal_emit (chooser,
image_chooser_signals [CHANGED], 0);
}
}
gtk_drag_finish (context, handled, FALSE, time);
}
gboolean
e_image_chooser_set_from_file (EImageChooser *chooser, const char *filename)
{
gchar *data;
gsize data_length;
g_return_val_if_fail (E_IS_IMAGE_CHOOSER (chooser), FALSE);
if (!g_file_get_contents (filename, &data, &data_length, NULL)) {
return FALSE;
}
set_image_from_data (chooser, data, data_length);
g_free (data);
return TRUE;
}
void
e_image_chooser_set_editable (EImageChooser *chooser, gboolean editable)
{
g_return_if_fail (E_IS_IMAGE_CHOOSER (chooser));
chooser->priv->editable = editable;
gtk_widget_set_sensitive (chooser->priv->browse_button, editable);
}

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widgets/misc/e-image-chooser.h Normal file
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@ -0,0 +1,61 @@
/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
/* e-image-chooser.c
* Copyright (C) 2004 Novell, Inc.
* Author: Chris Toshok <toshok@ximian.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of version 2 of the GNU General Public
* License as published by the Free Software Foundation.
*
* 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 library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#ifndef _E_IMAGE_CHOOSER_H_
#define _E_IMAGE_CHOOSER_H_
#include <gtk/gtkvbox.h>
G_BEGIN_DECLS
#define E_TYPE_IMAGE_CHOOSER (e_image_chooser_get_type ())
#define E_IMAGE_CHOOSER(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), E_TYPE_IMAGE_CHOOSER, EImageChooser))
#define E_IMAGE_CHOOSER_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), E_TYPE_IMAGE_CHOOSER, EImageChooserClass))
#define E_IS_IMAGE_CHOOSER(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), E_TYPE_IMAGE_CHOOSER))
#define E_IS_IMAGE_CHOOSER_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((obj), E_TYPE_IMAGE_CHOOSER))
typedef struct _EImageChooser EImageChooser;
typedef struct _EImageChooserClass EImageChooserClass;
typedef struct _EImageChooserPrivate EImageChooserPrivate;
struct _EImageChooser
{
GtkVBox parent;
EImageChooserPrivate *priv;
};
struct _EImageChooserClass
{
GtkVBoxClass parent_class;
/* signals */
void (*changed) (EImageChooser *chooser);
};
GtkWidget *e_image_chooser_new (void);
GType e_image_chooser_get_type (void);
gboolean e_image_chooser_set_from_file (EImageChooser *chooser, const char *filename);
void e_image_chooser_set_editable (EImageChooser *chooser, gboolean editable);
#endif /* _E_IMAGE_CHOOSER_H_ */