1 files changed, 87 insertions, 0 deletions
diff --git a/src/ui/widget/export-preview.h b/src/ui/widget/export-preview.h
new file mode 100644
index 0000000..ad7f49c
--- /dev/null
+++ b/src/ui/widget/export-preview.h
@@ -0,0 +1,87 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/* Authors:
+ *   Anshudhar Kumar Singh <anshudhar2001@gmail.com>
+ *
+ * Copyright (C) 2021 Authors
+ *
+ * Released under GNU GPL v2+, read the file 'COPYING' for more information.
+ */
+
+#ifndef SP_EXPORT_PREVIEW_H
+#define SP_EXPORT_PREVIEW_H
+
+#include <gtkmm.h>
+
+#include "desktop.h"
+#include "document.h"
+
+class SPObject;
+class SPItem;
+
+namespace Glib {
+class Timer;
+}
+
+namespace Inkscape {
+class Drawing;
+namespace UI {
+namespace Dialog {
+
+class ExportPreview : public Gtk::Image
+{
+public:
+    ExportPreview() {};
+    ~ExportPreview() override;
+
+    ExportPreview(BaseObjectType* cobject, const Glib::RefPtr<Gtk::Builder>& refGlade):Gtk::Image(cobject){};
+private:
+    int size = 128; // size of preview image
+    bool isLastHide = false;
+    SPDocument *_document = nullptr;
+    SPItem *_item = nullptr;
+    Geom::OptRect _dbox;
+
+    Drawing *drawing = nullptr;
+    unsigned int visionkey = 0;
+    Glib::Timer *timer = nullptr;
+    Glib::Timer *renderTimer = nullptr;
+    bool pending = false;
+    gdouble minDelay = 0.1;
+
+    std::vector<SPItem *> _hidden_excluded;
+    bool _hidden_requested = false;
+public:
+    void setDocument(SPDocument *document);
+    void refreshHide(const std::vector<SPItem *> &list = {});
+    void hide_other_items_recursively(SPObject *o, const std::vector<SPItem *> &list);
+    void setItem(SPItem *item);
+    void setDbox(double x0, double x1, double y0, double y1);
+    void queueRefresh();
+    void resetPixels();
+
+    void setSize(int newSize)
+    {
+        size = newSize;
+        resetPixels();
+    }
+private:
+    void refreshPreview();
+    void renderPreview();
+    bool refreshCB();
+    void performHide(const std::vector<SPItem *> *list);
+};
+} // namespace Dialog
+} // namespace UI
+} // namespace Inkscape
+#endif
+
+/*
+  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:fileencoding=utf-8:textwidth=99 :