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testdnd2: Port to GtkDropTarget

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This commit is contained in:
Matthias Clasen 2020-01-02 01:31:14 -05:00
parent 4ea18a22e6
commit 3f33a0ed27
1 changed files with 41 additions and 38 deletions
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79
tests/testdnd2.c
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@ -1,3 +1,4 @@
#include <unistd.h>
#include <gtk/gtk.h>
static GdkPaintable *
@ -37,20 +38,6 @@ enum {
BOTTOM_RIGHT
};
static void
update_dest_target_list (GtkWidget *image)
{
GdkContentFormats *target_list;
target_list = gdk_content_formats_new (NULL, 0);
target_list = gtk_content_formats_add_image_targets (target_list, FALSE);
target_list = gtk_content_formats_add_text_targets (target_list);
gtk_drag_dest_set_target_list (image, target_list);
gdk_content_formats_unref (target_list);
}
void
image_drag_data_get (GtkWidget *widget,
GdkDrag *drag,
@ -84,31 +71,45 @@ image_drag_data_get (GtkWidget *widget,
}
static void
image_drag_data_received (GtkWidget *widget,
GdkDrop *drop,
GtkSelectionData *selection_data,
gpointer data)
got_texture (GObject *source,
GAsyncResult *result,
gpointer data)
{
GdkTexture *texture;
gchar *text;
GdkDrop *drop = GDK_DROP (source);
GtkWidget *image = data;
const GValue *value;
GError *error = NULL;
if (gtk_selection_data_get_length (selection_data) == 0)
return;
texture = gtk_selection_data_get_texture (selection_data);
if (texture)
value = gdk_drop_read_value_finish (drop, result, &error);
if (value)
{
gtk_image_set_from_paintable (GTK_IMAGE (widget), GDK_PAINTABLE (texture));
g_object_unref (texture);
return;
GdkTexture *texture = g_value_get_object (value);
gtk_image_set_from_paintable (GTK_IMAGE (image), GDK_PAINTABLE (texture));
gdk_drop_finish (drop, GDK_ACTION_COPY);
}
else
{
g_print ("Failed to get data: %s\n", error->message);
g_error_free (error);
gdk_drop_finish (drop, 0);
}
}
static gboolean
image_drag_drop (GtkDropTarget *dest,
int x,
int y,
gpointer data)
{
GdkDrop *drop = gtk_drop_target_get_drop (dest);
if (gdk_drop_has_value (drop, GDK_TYPE_TEXTURE))
{
gdk_drop_read_value_async (drop, GDK_TYPE_TEXTURE, G_PRIORITY_DEFAULT, NULL, got_texture, data);
return TRUE;
}
text = (gchar *)gtk_selection_data_get_text (selection_data);
if (text)
{
gtk_image_set_from_icon_name (GTK_IMAGE (widget), text);
g_free (text);
}
return FALSE;
}
static void
@ -215,6 +216,7 @@ make_image (const gchar *icon_name, int hotspot)
{
GtkWidget *image;
GtkDragSource *source;
GtkDropTarget *dest;
GdkContentFormats *formats;
GdkContentProvider *content;
@ -228,7 +230,6 @@ make_image (const gchar *icon_name, int hotspot)
content = gdk_content_provider_new_with_formats (formats, get_data, image);
source = gtk_drag_source_new (content, GDK_ACTION_COPY);
g_object_unref (content);
gdk_content_formats_unref (formats);
update_source_icon (source, icon_name, hotspot);
g_signal_connect (source, "drag-begin", G_CALLBACK (drag_begin), NULL);
@ -236,9 +237,11 @@ make_image (const gchar *icon_name, int hotspot)
g_signal_connect (source, "drag-failed", G_CALLBACK (drag_failed), NULL);
gtk_drag_source_attach (source, image, GDK_BUTTON1_MASK);
gtk_drag_dest_set (image, GTK_DEST_DEFAULT_ALL, NULL, GDK_ACTION_COPY);
g_signal_connect (image, "drag-data-received", G_CALLBACK (image_drag_data_received), NULL);
update_dest_target_list (image);
dest = gtk_drop_target_new (GTK_DEST_DEFAULT_MOTION | GTK_DEST_DEFAULT_HIGHLIGHT, formats, GDK_ACTION_COPY);
g_signal_connect (dest, "drag-drop", G_CALLBACK (image_drag_drop), image);
gtk_drop_target_attach (dest, image);
gdk_content_formats_unref (formats);
return image;
}