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| author | Johan B. C. Engelen <jbc.engelen@swissonline.ch> | 2008-03-02 13:38:15 +0000 |
|---|---|---|
| committer | johanengelen <johanengelen@users.sourceforge.net> | 2008-03-02 13:38:15 +0000 |
| commit | acae310d49358ac8de885fa8692caf5e4067574c (patch) | |
| tree | b19affe735ea558718e378184a11031bbe44c328 /src/display/canvas-temporary-item.cpp | |
| parent | warning cleanup (diff) | |
| download | inkscape-acae310d49358ac8de885fa8692caf5e4067574c.tar.gz inkscape-acae310d49358ac8de885fa8692caf5e4067574c.zip | |
NEW: temporary on-canvas indicators
(bzr r4918)
Diffstat (limited to 'src/display/canvas-temporary-item.cpp')
| -rw-r--r-- | src/display/canvas-temporary-item.cpp | 72 |
1 files changed, 72 insertions, 0 deletions
diff --git a/src/display/canvas-temporary-item.cpp b/src/display/canvas-temporary-item.cpp new file mode 100644 index 000000000..da6caf2c1 --- /dev/null +++ b/src/display/canvas-temporary-item.cpp @@ -0,0 +1,72 @@ +/** \file
+ * Provides a class that can contain active TemporaryItem's on a desktop
+ * When the object is deleted, it also deletes the canvasitem it contains!
+ * This object should be created/managed by a TemporaryItemList.
+ * After its lifetime, it fires the timeout signal, afterwards *it deletes itself*.
+ *
+ * (part of code inspired by message-stack.cpp)
+ *
+ * Authors:
+ * Johan Engelen
+ *
+ * Copyright (C) Johan Engelen 2008 <j.b.c.engelen@utwente.nl>
+ *
+ * Released under GNU GPL, read the file 'COPYING' for more information
+ */
+
+#include "display/canvas-temporary-item.h"
+
+#include <gtk/gtkobject.h>
+
+namespace Inkscape {
+namespace Display {
+
+/** lifetime is measured in milliseconds
+ */
+TemporaryItem::TemporaryItem(SPCanvasItem *item, guint lifetime)
+ : canvasitem(item),
+ timeout_id(0)
+{
+ if (lifetime > 0) {
+ timeout_id = g_timeout_add(lifetime, &TemporaryItem::_timeout, this);
+ }
+}
+
+TemporaryItem::~TemporaryItem()
+{
+ // when it has not expired yet...
+ if (timeout_id) {
+ g_source_remove(timeout_id);
+ timeout_id = 0;
+ }
+
+ if (canvasitem) {
+ // destroying the item automatically hides it
+ gtk_object_destroy (GTK_OBJECT (canvasitem));
+ canvasitem = NULL;
+ }
+}
+
+/* static method*/
+gboolean TemporaryItem::_timeout(gpointer data) {
+ TemporaryItem *tempitem = reinterpret_cast<TemporaryItem *>(data);
+ tempitem->timeout_id = 0;
+ tempitem->signal_timeout.emit(tempitem);
+ delete tempitem;
+ return FALSE;
+}
+
+
+} //namespace Display
+} /* namespace Inkscape */
+
+/*
+ Local Variables:
+ mode:c++
+ c-file-style:"stroustrup"
+ c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
+ indent-tabs-mode:nil
+ fill-column:99
+ End:
+*/
+// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4 :
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