414 lines
12 KiB
C
414 lines
12 KiB
C
|
/* Clipboard
|
||
|
|
* #Keywords: drag-and-drop, dnd
|
||
|
|
*
|
||
|
|
* GdkClipboard is used for clipboard handling. This demo shows how to
|
||
|
|
* copy and paste text, images, colors or files to and from the clipboard.
|
||
|
|
*
|
||
|
|
* You can also use Drag-And-Drop to copy the data from the source to the
|
||
|
|
* target.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include <glib/gi18n.h>
|
||
|
|
#include <gtk/gtk.h>
|
||
|
|
#include <string.h>
|
||
|
|
#include "demoimage.h"
|
||
|
|
|
||
|
|
static void
|
||
|
|
copy_button_clicked (GtkStack *source_stack,
|
||
|
|
gpointer user_data)
|
||
|
|
{
|
||
|
|
GdkClipboard *clipboard;
|
||
|
|
const char *visible_child_name;
|
||
|
|
GtkWidget *visible_child;
|
||
|
|
|
||
|
|
clipboard = gtk_widget_get_clipboard (GTK_WIDGET (source_stack));
|
||
|
|
|
||
|
|
visible_child = gtk_stack_get_visible_child (source_stack);
|
||
|
|
visible_child_name = gtk_stack_get_visible_child_name (source_stack);
|
||
|
|
|
||
|
|
if (strcmp (visible_child_name, "Text") == 0)
|
||
|
|
{
|
||
|
|
gdk_clipboard_set_text (clipboard, gtk_editable_get_text (GTK_EDITABLE (visible_child)));
|
||
|
|
}
|
||
|
|
else if (strcmp (visible_child_name, "Image") == 0)
|
||
|
|
{
|
||
|
|
GtkWidget *child;
|
||
|
|
|
||
|
|
for (child = gtk_widget_get_first_child (visible_child); child; child = gtk_widget_get_next_sibling (child))
|
||
|
|
{
|
||
|
|
if (gtk_toggle_button_get_active (GTK_TOGGLE_BUTTON (child)))
|
||
|
|
{
|
||
|
|
GtkWidget *image = gtk_widget_get_first_child (child);
|
||
|
|
GdkPaintable *paintable = gtk_image_get_paintable (GTK_IMAGE (image));
|
||
|
|
|
||
|
|
if (GDK_IS_TEXTURE (paintable))
|
||
|
|
gdk_clipboard_set (clipboard, GDK_TYPE_TEXTURE, paintable);
|
||
|
|
else
|
||
|
|
gdk_clipboard_set (clipboard, GDK_TYPE_PAINTABLE, paintable);
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
else if (strcmp (visible_child_name, "Color") == 0)
|
||
|
|
{
|
||
|
|
const GdkRGBA *color;
|
||
|
|
|
||
|
|
color = gtk_color_dialog_button_get_rgba (GTK_COLOR_DIALOG_BUTTON (visible_child));
|
||
|
|
gdk_clipboard_set (clipboard, GDK_TYPE_RGBA, color);
|
||
|
|
}
|
||
|
|
else if (strcmp (visible_child_name, "File") == 0)
|
||
|
|
{
|
||
|
|
gdk_clipboard_set (clipboard, G_TYPE_FILE, g_object_get_data (G_OBJECT (visible_child), "file"), NULL);
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
g_print ("TODO");
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
static void
|
||
|
|
present_value (GtkStack *dest_stack,
|
||
|
|
const GValue *value)
|
||
|
|
{
|
||
|
|
GtkWidget *child;
|
||
|
|
|
||
|
|
if (G_VALUE_HOLDS (value, G_TYPE_FILE))
|
||
|
|
{
|
||
|
|
GFile *file;
|
||
|
|
|
||
|
|
gtk_stack_set_visible_child_name (dest_stack, "File");
|
||
|
|
child = gtk_stack_get_visible_child (dest_stack);
|
||
|
|
|
||
|
|
file = g_value_get_object (value);
|
||
|
|
g_object_set (child, "label", g_file_peek_path (file), NULL);
|
||
|
|
}
|
||
|
|
else if (G_VALUE_HOLDS (value, GDK_TYPE_RGBA))
|
||
|
|
{
|
||
|
|
GdkRGBA *color;
|
||
|
|
|
||
|
|
gtk_stack_set_visible_child_name (dest_stack, "Color");
|
||
|
|
child = gtk_widget_get_first_child (gtk_stack_get_visible_child (dest_stack));
|
||
|
|
|
||
|
|
color = g_value_get_boxed (value);
|
||
|
|
g_object_set (child, "rgba", color, NULL);
|
||
|
|
}
|
||
|
|
else if (G_VALUE_HOLDS (value, GDK_TYPE_TEXTURE) ||
|
||
|
|
G_VALUE_HOLDS (value, GDK_TYPE_PAINTABLE))
|
||
|
|
{
|
||
|
|
GdkPaintable *paintable;
|
||
|
|
|
||
|
|
gtk_stack_set_visible_child_name (dest_stack, "Image");
|
||
|
|
child = gtk_stack_get_visible_child (dest_stack);
|
||
|
|
|
||
|
|
paintable = g_value_get_object (value);
|
||
|
|
g_object_set (child, "paintable", paintable, NULL);
|
||
|
|
}
|
||
|
|
else if (G_VALUE_HOLDS (value, G_TYPE_STRING))
|
||
|
|
{
|
||
|
|
gtk_stack_set_visible_child_name (dest_stack, "Text");
|
||
|
|
child = gtk_stack_get_visible_child (dest_stack);
|
||
|
|
|
||
|
|
gtk_label_set_label (GTK_LABEL (child), g_value_get_string (value));
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
static void
|
||
|
|
paste_received (GObject *source_object,
|
||
|
|
GAsyncResult *result,
|
||
|
|
gpointer user_data)
|
||
|
|
{
|
||
|
|
GtkStack *dest_stack = user_data;
|
||
|
|
GdkClipboard *clipboard;
|
||
|
|
const GValue *value;
|
||
|
|
GError *error = NULL;
|
||
|
|
|
||
|
|
clipboard = GDK_CLIPBOARD (source_object);
|
||
|
|
|
||
|
|
value = gdk_clipboard_read_value_finish (clipboard, result, &error);
|
||
|
|
if (value)
|
||
|
|
{
|
||
|
|
present_value (dest_stack, value);
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
g_print ("%s\n", error->message);
|
||
|
|
g_error_free (error);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
static void
|
||
|
|
paste_button_clicked (GtkStack *dest_stack,
|
||
|
|
gpointer user_data)
|
||
|
|
{
|
||
|
|
GdkClipboard *clipboard;
|
||
|
|
GdkContentFormats *formats;
|
||
|
|
|
||
|
|
clipboard = gtk_widget_get_clipboard (GTK_WIDGET (dest_stack));
|
||
|
|
formats = gdk_clipboard_get_formats (clipboard);
|
||
|
|
|
||
|
|
if (gdk_content_formats_contain_gtype (formats, GDK_TYPE_TEXTURE))
|
||
|
|
gdk_clipboard_read_value_async (clipboard, GDK_TYPE_TEXTURE, 0, NULL, paste_received, dest_stack);
|
||
|
|
else if (gdk_content_formats_contain_gtype (formats, GDK_TYPE_PAINTABLE))
|
||
|
|
gdk_clipboard_read_value_async (clipboard, GDK_TYPE_PAINTABLE, 0, NULL, paste_received, dest_stack);
|
||
|
|
else if (gdk_content_formats_contain_gtype (formats, GDK_TYPE_RGBA))
|
||
|
|
gdk_clipboard_read_value_async (clipboard, GDK_TYPE_RGBA, 0, NULL, paste_received, dest_stack);
|
||
|
|
else if (gdk_content_formats_contain_gtype (formats, G_TYPE_FILE))
|
||
|
|
gdk_clipboard_read_value_async (clipboard, G_TYPE_FILE, 0, NULL, paste_received, dest_stack);
|
||
|
|
else if (gdk_content_formats_contain_gtype (formats, G_TYPE_STRING))
|
||
|
|
gdk_clipboard_read_value_async (clipboard, G_TYPE_STRING, 0, NULL, paste_received, dest_stack);
|
||
|
|
}
|
||
|
|
|
||
|
|
static void
|
||
|
|
update_copy_button_sensitivity (GtkWidget *source_stack)
|
||
|
|
{
|
||
|
|
GtkButton *copy_button;
|
||
|
|
const char *visible_child_name;
|
||
|
|
GtkWidget *visible_child;
|
||
|
|
gboolean sensitive;
|
||
|
|
|
||
|
|
copy_button = GTK_BUTTON (g_object_get_data (G_OBJECT (source_stack), "copy-button"));
|
||
|
|
|
||
|
|
visible_child = gtk_stack_get_visible_child (GTK_STACK (source_stack));
|
||
|
|
visible_child_name = gtk_stack_get_visible_child_name (GTK_STACK (source_stack));
|
||
|
|
if (strcmp (visible_child_name, "Text") == 0)
|
||
|
|
{
|
||
|
|
sensitive = strlen (gtk_editable_get_text (GTK_EDITABLE (visible_child))) > 0;
|
||
|
|
}
|
||
|
|
else if (strcmp (visible_child_name, "Color") == 0 ||
|
||
|
|
strcmp (visible_child_name, "Image") == 0)
|
||
|
|
{
|
||
|
|
sensitive = TRUE;
|
||
|
|
}
|
||
|
|
else if (strcmp (visible_child_name, "File") == 0)
|
||
|
|
{
|
||
|
|
sensitive = g_object_get_data (G_OBJECT (visible_child), "file") != NULL;
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
sensitive = FALSE;
|
||
|
|
}
|
||
|
|
|
||
|
|
gtk_widget_set_sensitive (GTK_WIDGET (copy_button), sensitive);
|
||
|
|
}
|
||
|
|
|
||
|
|
static void
|
||
|
|
source_changed_cb (GtkButton *copy_button,
|
||
|
|
GParamSpec *pspec,
|
||
|
|
GtkWidget *source_stack)
|
||
|
|
{
|
||
|
|
update_copy_button_sensitivity (source_stack);
|
||
|
|
}
|
||
|
|
|
||
|
|
static void
|
||
|
|
text_changed_cb (GtkButton *copy_button,
|
||
|
|
GParamSpec *pspec,
|
||
|
|
GtkWidget *entry)
|
||
|
|
{
|
||
|
|
update_copy_button_sensitivity (gtk_widget_get_ancestor (entry, GTK_TYPE_STACK));
|
||
|
|
}
|
||
|
|
|
||
|
|
static void
|
||
|
|
file_button_set_file (GtkButton *button,
|
||
|
|
GFile *file)
|
||
|
|
{
|
||
|
|
gtk_label_set_label (GTK_LABEL (gtk_button_get_child (button)), g_file_peek_path (file));
|
||
|
|
g_object_set_data_full (G_OBJECT (button), "file", g_object_ref (file), g_object_unref);
|
||
|
|
}
|
||
|
|
|
||
|
|
static void
|
||
|
|
file_chooser_response (GObject *source,
|
||
|
|
GAsyncResult *result,
|
||
|
|
gpointer user_data)
|
||
|
|
{
|
||
|
|
GtkFileDialog *dialog = GTK_FILE_DIALOG (source);
|
||
|
|
GtkButton *button = GTK_BUTTON (user_data);
|
||
|
|
GFile *file;
|
||
|
|
|
||
|
|
file = gtk_file_dialog_open_finish (dialog, result, NULL);
|
||
|
|
if (file)
|
||
|
|
{
|
||
|
|
file_button_set_file (button, file);
|
||
|
|
g_object_unref (file);
|
||
|
|
|
||
|
|
update_copy_button_sensitivity (gtk_widget_get_ancestor (GTK_WIDGET (button), GTK_TYPE_STACK));
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
static void
|
||
|
|
open_file_cb (GtkWidget *button)
|
||
|
|
{
|
||
|
|
GtkFileDialog *dialog;
|
||
|
|
|
||
|
|
dialog = gtk_file_dialog_new ();
|
||
|
|
|
||
|
|
gtk_file_dialog_open (dialog,
|
||
|
|
GTK_WINDOW (gtk_widget_get_ancestor (button, GTK_TYPE_WINDOW)),
|
||
|
|
NULL,
|
||
|
|
file_chooser_response, button);
|
||
|
|
|
||
|
|
g_object_unref (dialog);
|
||
|
|
}
|
||
|
|
|
||
|
|
static void
|
||
|
|
folder_chooser_response (GObject *source,
|
||
|
|
GAsyncResult *result,
|
||
|
|
gpointer user_data)
|
||
|
|
{
|
||
|
|
GtkFileDialog *dialog = GTK_FILE_DIALOG (source);
|
||
|
|
GtkButton *button = GTK_BUTTON (user_data);
|
||
|
|
GFile *file;
|
||
|
|
|
||
|
|
file = gtk_file_dialog_select_folder_finish (dialog, result, NULL);
|
||
|
|
if (file)
|
||
|
|
{
|
||
|
|
file_button_set_file (button, file);
|
||
|
|
g_object_unref (file);
|
||
|
|
|
||
|
|
update_copy_button_sensitivity (gtk_widget_get_ancestor (GTK_WIDGET (button), GTK_TYPE_STACK));
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
static void
|
||
|
|
open_folder_cb (GtkWidget *button)
|
||
|
|
{
|
||
|
|
GtkFileDialog *dialog;
|
||
|
|
|
||
|
|
dialog = gtk_file_dialog_new ();
|
||
|
|
|
||
|
|
gtk_file_dialog_select_folder (dialog,
|
||
|
|
GTK_WINDOW (gtk_widget_get_ancestor (button, GTK_TYPE_WINDOW)),
|
||
|
|
NULL,
|
||
|
|
folder_chooser_response, button);
|
||
|
|
|
||
|
|
g_object_unref (dialog);
|
||
|
|
}
|
||
|
|
|
||
|
|
static void
|
||
|
|
update_paste_button_sensitivity (GdkClipboard *clipboard,
|
||
|
|
GtkWidget *paste_button)
|
||
|
|
{
|
||
|
|
GdkContentFormats *formats;
|
||
|
|
gboolean sensitive = FALSE;
|
||
|
|
|
||
|
|
formats = gdk_clipboard_get_formats (clipboard);
|
||
|
|
|
||
|
|
if (gdk_content_formats_contain_gtype (formats, G_TYPE_FILE) ||
|
||
|
|
gdk_content_formats_contain_gtype (formats, GDK_TYPE_RGBA) ||
|
||
|
|
gdk_content_formats_contain_gtype (formats, GDK_TYPE_TEXTURE) ||
|
||
|
|
gdk_content_formats_contain_gtype (formats, GDK_TYPE_PAINTABLE) ||
|
||
|
|
gdk_content_formats_contain_gtype (formats, G_TYPE_STRING))
|
||
|
|
sensitive = TRUE;
|
||
|
|
|
||
|
|
gtk_widget_set_sensitive (paste_button, sensitive);
|
||
|
|
}
|
||
|
|
|
||
|
|
static void
|
||
|
|
unset_clipboard_handler (gpointer data)
|
||
|
|
{
|
||
|
|
GdkClipboard *clipboard = gtk_widget_get_clipboard (GTK_WIDGET (data));
|
||
|
|
|
||
|
|
g_signal_handlers_disconnect_by_func (clipboard, update_paste_button_sensitivity, data);
|
||
|
|
}
|
||
|
|
|
||
|
|
static gboolean
|
||
|
|
on_drop (GtkStack *dest_stack,
|
||
|
|
const GValue *value,
|
||
|
|
double x,
|
||
|
|
double y,
|
||
|
|
gpointer data)
|
||
|
|
{
|
||
|
|
present_value (dest_stack, value);
|
||
|
|
return TRUE;
|
||
|
|
}
|
||
|
|
|
||
|
|
static GdkContentProvider *
|
||
|
|
drag_prepare (GtkDragSource *drag_source,
|
||
|
|
double x,
|
||
|
|
double y,
|
||
|
|
gpointer data)
|
||
|
|
{
|
||
|
|
GtkWidget *button;
|
||
|
|
GValue value = G_VALUE_INIT;
|
||
|
|
|
||
|
|
button = gtk_event_controller_get_widget (GTK_EVENT_CONTROLLER (drag_source));
|
||
|
|
|
||
|
|
if (GTK_IS_TOGGLE_BUTTON (button))
|
||
|
|
{
|
||
|
|
GtkWidget *image = gtk_widget_get_first_child (button);
|
||
|
|
GdkPaintable *paintable = gtk_image_get_paintable (GTK_IMAGE (image));
|
||
|
|
|
||
|
|
if (GDK_IS_TEXTURE (paintable))
|
||
|
|
{
|
||
|
|
g_value_init (&value, GDK_TYPE_TEXTURE);
|
||
|
|
g_value_set_object (&value, paintable);
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
g_value_init (&value, GDK_TYPE_PAINTABLE);
|
||
|
|
g_value_set_object (&value, paintable);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
GFile *file = g_object_get_data (G_OBJECT (button), "file");
|
||
|
|
|
||
|
|
if (file)
|
||
|
|
{
|
||
|
|
g_value_init (&value, G_TYPE_FILE);
|
||
|
|
g_value_set_object (&value, file);
|
||
|
|
}
|
||
|
|
else
|
||
|
|
return NULL;
|
||
|
|
}
|
||
|
|
|
||
|
|
return gdk_content_provider_new_for_value (&value);
|
||
|
|
}
|
||
|
|
|
||
|
|
GtkWidget *
|
||
|
|
do_clipboard (GtkWidget *do_widget)
|
||
|
|
{
|
||
|
|
static GtkWidget *window = NULL;
|
||
|
|
|
||
|
|
if (!window)
|
||
|
|
{
|
||
|
|
GtkBuilderScope *scope;
|
||
|
|
GtkBuilder *builder;
|
||
|
|
GtkWidget *button;
|
||
|
|
|
||
|
|
scope = gtk_builder_cscope_new ();
|
||
|
|
gtk_builder_cscope_add_callback (scope, copy_button_clicked);
|
||
|
|
gtk_builder_cscope_add_callback (scope, paste_button_clicked);
|
||
|
|
gtk_builder_cscope_add_callback (scope, source_changed_cb);
|
||
|
|
gtk_builder_cscope_add_callback (scope, text_changed_cb);
|
||
|
|
gtk_builder_cscope_add_callback (scope, open_file_cb);
|
||
|
|
gtk_builder_cscope_add_callback (scope, open_folder_cb);
|
||
|
|
gtk_builder_cscope_add_callback (scope, on_drop);
|
||
|
|
gtk_builder_cscope_add_callback (scope, drag_prepare);
|
||
|
|
builder = gtk_builder_new ();
|
||
|
|
gtk_builder_set_scope (builder, scope);
|
||
|
|
gtk_builder_add_from_resource (builder, "/clipboard/clipboard.ui", NULL);
|
||
|
|
|
||
|
|
window = GTK_WIDGET (gtk_builder_get_object (builder, "window"));
|
||
|
|
g_object_add_weak_pointer (G_OBJECT (window), (gpointer *)&window);
|
||
|
|
gtk_window_set_display (GTK_WINDOW (window), gtk_widget_get_display (do_widget));
|
||
|
|
|
||
|
|
button = GTK_WIDGET (gtk_builder_get_object (builder, "copy_button"));
|
||
|
|
g_object_set_data (gtk_builder_get_object (builder, "source_stack"), "copy-button", button);
|
||
|
|
|
||
|
|
button = GTK_WIDGET (gtk_builder_get_object (builder, "paste_button"));
|
||
|
|
g_signal_connect (gtk_widget_get_clipboard (button), "changed",
|
||
|
|
G_CALLBACK (update_paste_button_sensitivity), button);
|
||
|
|
g_object_set_data_full (G_OBJECT (button), "clipboard-handler", button, unset_clipboard_handler);
|
||
|
|
|
||
|
|
g_object_unref (builder);
|
||
|
|
g_object_unref (scope);
|
||
|
|
}
|
||
|
|
|
||
|
|
if (!gtk_widget_get_visible (window))
|
||
|
|
gtk_widget_set_visible (window, TRUE);
|
||
|
|
else
|
||
|
|
gtk_window_destroy (GTK_WINDOW (window));
|
||
|
|
|
||
|
|
return window;
|
||
|
|
}
|