[evolution/webkit-composer: 2/111] Import GtkHTMLImageChooserDialog to EImageChooserDialog
- From: Matthew Barnes <mbarnes src gnome org>
- To: commits-list gnome org
- Cc:
- Subject: [evolution/webkit-composer: 2/111] Import GtkHTMLImageChooserDialog to EImageChooserDialog
- Date: Thu, 10 Jan 2013 16:21:38 +0000 (UTC)
commit 065afc169ca8a5487964d1698f19779e9374c084
Author: Dan VrÃtil <dvratil redhat com>
Date: Mon Jul 23 10:13:40 2012 +0200
Import GtkHTMLImageChooserDialog to EImageChooserDialog
e-util/Makefile.am | 2 +
e-util/e-image-chooser-dialog.c | 219 +++++++++++++++++++++++++++++++++++++++
e-util/e-image-chooser-dialog.h | 72 +++++++++++++
3 files changed, 293 insertions(+), 0 deletions(-)
---
diff --git a/e-util/Makefile.am b/e-util/Makefile.am
index ad77511..b4f98f9 100644
--- a/e-util/Makefile.am
+++ b/e-util/Makefile.am
@@ -183,6 +183,7 @@ eutilinclude_HEADERS = \
e-html-utils.h \
e-icon-factory.h \
e-image-chooser.h \
+ e-image-chooser-dialog.h \
e-import-assistant.h \
e-import.h \
e-interval-chooser.h \
@@ -428,6 +429,7 @@ libeutil_la_SOURCES = \
e-html-utils.c \
e-icon-factory.c \
e-image-chooser.c \
+ e-image-chooser-dialog.c \
e-import-assistant.c \
e-import.c \
e-interval-chooser.c \
diff --git a/e-util/e-image-chooser-dialog.c b/e-util/e-image-chooser-dialog.c
new file mode 100644
index 0000000..17daca3
--- /dev/null
+++ b/e-util/e-image-chooser-dialog.c
@@ -0,0 +1,219 @@
+/*
+ * e-image-chooser-dialog.c
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of version 2 of the GNU Lesser 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 Lesser 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 "e-image-chooser-dialog.h"
+
+#define PREVIEW_WIDTH 256
+#define PREVIEW_HEIGHT 256
+
+typedef struct _Context Context;
+
+struct _EImageChooserDialogPrivate {
+ GCancellable *cancellable;
+};
+
+struct _Context {
+ GtkFileChooser *file_chooser;
+ GCancellable *cancellable;
+};
+
+G_DEFINE_TYPE (
+ EImageChooserDialog,
+ e_image_chooser_dialog,
+ GTK_TYPE_FILE_CHOOSER_DIALOG)
+
+static void
+context_free (Context *context)
+{
+ g_object_unref (context->file_chooser);
+ g_object_unref (context->cancellable);
+
+ g_slice_free (Context, context);
+}
+
+static void
+image_chooser_dialog_read_cb (GFile *preview_file,
+ GAsyncResult *result,
+ Context *context)
+{
+ GdkPixbuf *pixbuf;
+ GtkWidget *preview_widget;
+ GFileInputStream *input_stream;
+
+ input_stream = g_file_read_finish (preview_file, result, NULL);
+
+ /* FIXME Handle errors better, but remember
+ * to ignore G_IO_ERROR_CANCELLED. */
+ if (input_stream == NULL)
+ goto exit;
+
+ /* XXX This blocks, but GDK-PixBuf offers no asynchronous
+ * alternative and I don't want to deal with making GDK
+ * calls from threads and all the crap that goes with it. */
+ pixbuf = gdk_pixbuf_new_from_stream_at_scale (
+ G_INPUT_STREAM (input_stream),
+ PREVIEW_WIDTH, PREVIEW_HEIGHT, TRUE,
+ context->cancellable, NULL);
+
+ preview_widget = gtk_file_chooser_get_preview_widget (
+ context->file_chooser);
+
+ gtk_file_chooser_set_preview_widget_active (
+ context->file_chooser, pixbuf != NULL);
+
+ gtk_image_set_from_pixbuf (GTK_IMAGE (preview_widget), pixbuf);
+
+ if (pixbuf != NULL)
+ g_object_unref (pixbuf);
+
+ g_object_unref (input_stream);
+
+exit:
+ context_free (context);
+}
+
+static void
+image_chooser_dialog_update_preview (GtkFileChooser *file_chooser)
+{
+ EImageChooserDialogPrivate *priv;
+ GtkWidget *preview_widget;
+ GFile *preview_file;
+ Context *context;
+
+ priv = E_IMAGE_CHOOSER_DIALOG (file_chooser)->priv;
+ preview_file = gtk_file_chooser_get_preview_file (file_chooser);
+ preview_widget = gtk_file_chooser_get_preview_widget (file_chooser);
+
+ if (priv->cancellable != NULL) {
+ g_cancellable_cancel (priv->cancellable);
+ g_object_unref (priv->cancellable);
+ priv->cancellable = NULL;
+ }
+
+ gtk_image_clear (GTK_IMAGE (preview_widget));
+ gtk_file_chooser_set_preview_widget_active (file_chooser, FALSE);
+
+ if (preview_file == NULL)
+ return;
+
+ priv->cancellable = g_cancellable_new ();
+
+ context = g_slice_new0 (Context);
+ context->file_chooser = g_object_ref (file_chooser);
+ context->cancellable = g_object_ref (priv->cancellable);
+
+ g_file_read_async (
+ preview_file, G_PRIORITY_LOW,
+ priv->cancellable, (GAsyncReadyCallback)
+ image_chooser_dialog_read_cb, context);
+
+ g_object_unref (preview_file);
+}
+
+static void
+image_chooser_dialog_dispose (GObject *object)
+{
+ EImageChooserDialogPrivate *priv;
+
+ priv = E_IMAGE_CHOOSER_DIALOG (object)->priv;
+
+ if (priv->cancellable != NULL) {
+ g_cancellable_cancel (priv->cancellable);
+ g_object_unref (priv->cancellable);
+ priv->cancellable = NULL;
+ }
+
+ /* Chain up to parent's dispose() method. */
+ G_OBJECT_CLASS (e_image_chooser_dialog_parent_class)->dispose (object);
+}
+
+static void
+image_chooser_dialog_constructed (GObject *object)
+{
+ GtkFileChooser *file_chooser;
+ GtkFileFilter *file_filter;
+
+ file_chooser = GTK_FILE_CHOOSER (object);
+ gtk_file_chooser_set_local_only (file_chooser, FALSE);
+
+ gtk_dialog_add_button (
+ GTK_DIALOG (file_chooser),
+ GTK_STOCK_CANCEL, GTK_RESPONSE_CANCEL);
+ gtk_dialog_add_button (
+ GTK_DIALOG (file_chooser),
+ GTK_STOCK_OPEN, GTK_RESPONSE_ACCEPT);
+ gtk_dialog_set_default_response (
+ GTK_DIALOG (file_chooser), GTK_RESPONSE_ACCEPT);
+
+ file_filter = gtk_file_filter_new ();
+ gtk_file_filter_add_pixbuf_formats (file_filter);
+ gtk_file_chooser_set_filter (file_chooser, file_filter);
+
+ gtk_file_chooser_set_preview_widget (file_chooser, gtk_image_new ());
+}
+
+static void
+e_image_chooser_dialog_class_init (EImageChooserDialogClass *klass)
+{
+ GObjectClass *object_class;
+
+ g_type_class_add_private (
+ klass, sizeof (EImageChooserDialogPrivate));
+
+ object_class = G_OBJECT_CLASS (klass);
+ object_class->dispose = image_chooser_dialog_dispose;
+ object_class->constructed = image_chooser_dialog_constructed;
+}
+
+static void
+e_image_chooser_dialog_init (EImageChooserDialog *dialog)
+{
+ dialog->priv = G_TYPE_INSTANCE_GET_PRIVATE (
+ dialog, E_TYPE_IMAGE_CHOOSER_DIALOG,
+ EImageChooserDialogPrivate);
+
+ g_signal_connect (
+ dialog, "update-preview",
+ G_CALLBACK (image_chooser_dialog_update_preview), NULL);
+}
+
+GtkWidget *
+e_image_chooser_dialog_new (const gchar *title,
+ GtkWindow *parent)
+{
+ return g_object_new (
+ E_TYPE_IMAGE_CHOOSER_DIALOG,
+ "action", GTK_FILE_CHOOSER_ACTION_OPEN,
+ "title", title,
+ "transient-for", parent, NULL);
+}
+
+GFile *
+e_image_chooser_dialog_run (EImageChooserDialog *dialog)
+{
+ GtkFileChooser *file_chooser;
+
+ g_return_val_if_fail (E_IS_IMAGE_CHOOSER_DIALOG (dialog), NULL);
+
+ file_chooser = GTK_FILE_CHOOSER (dialog);
+
+ if (gtk_dialog_run (GTK_DIALOG (dialog)) != GTK_RESPONSE_ACCEPT)
+ return NULL;
+
+ return gtk_file_chooser_get_file (file_chooser);
+}
diff --git a/e-util/e-image-chooser-dialog.h b/e-util/e-image-chooser-dialog.h
new file mode 100644
index 0000000..82f8cec
--- /dev/null
+++ b/e-util/e-image-chooser-dialog.h
@@ -0,0 +1,72 @@
+/*
+ * e-image-chooser-dialog.h
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of version 2 of the GNU Lesser 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 Lesser 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.
+ */
+
+#if !defined (__E_UTIL_H_INSIDE__) && !defined (LIBEUTIL_COMPILATION)
+#error "Only <e-util/e-util.h> should be included directly."
+#endif
+
+#ifndef E_IMAGE_CHOOSER_DIALOG_H
+#define E_IMAGE_CHOOSER_DIALOG_H
+
+#include <gtk/gtk.h>
+
+/* Standard GObject macros */
+#define E_TYPE_IMAGE_CHOOSER_DIALOG \
+ (e_image_chooser_dialog_get_type ())
+#define E_IMAGE_CHOOSER_DIALOG(obj) \
+ (G_TYPE_CHECK_INSTANCE_CAST \
+ ((obj), E_TYPE_IMAGE_CHOOSER_DIALOG, EImageChooserDialog))
+#define E_IMAGE_CHOOSER_DIALOG_CLASS(cls) \
+ (G_TYPE_CHECK_CLASS_CAST \
+ ((cls), E_TYPE_IMAGE_CHOOSER_DIALOG, EImageChooserDialogClass))
+#define E_IS_IMAGE_CHOOSER_DIALOG(obj) \
+ (G_TYPE_CHECK_INSTANCE_TYPE \
+ ((obj), E_TYPE_IMAGE_CHOOSER_DIALOG))
+#define E_IS_IMAGE_CHOOSER_DIALOG_CLASS(cls) \
+ (G_TYPE_CHECK_CLASS_TYPE \
+ ((cls), E_TYPE_IMAGE_CHOOSER_DIALOG))
+#define E_IMAGE_CHOOSER_DIALOG_GET_CLASS(obj) \
+ (G_TYPE_INSTANCE_GET_CLASS \
+ ((obj), E_TYPE_IMAGE_CHOOSER_DIALOG, EImageChooserDialogClass))
+
+G_BEGIN_DECLS
+
+typedef struct _EImageChooserDialog EImageChooserDialog;
+typedef struct _EImageChooserDialogClass EImageChooserDialogClass;
+typedef struct _EImageChooserDialogPrivate EImageChooserDialogPrivate;
+
+struct _EImageChooserDialog {
+ GtkFileChooserDialog parent;
+ EImageChooserDialogPrivate *priv;
+};
+
+struct _EImageChooserDialogClass {
+ GtkFileChooserDialogClass parent_class;
+};
+
+GType e_image_chooser_dialog_get_type
+ (void) G_GNUC_CONST;
+GtkWidget * e_image_chooser_dialog_new
+ (const gchar *title,
+ GtkWindow *parent);
+GFile * e_image_chooser_dialog_run
+ (EImageChooserDialog *dialog);
+
+G_END_DECLS
+
+#endif /* E_IMAGE_CHOOSER_DIALOG_H */
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