1 files changed, 91 insertions, 0 deletions
diff --git a/src/ui/previewholder.h b/src/ui/previewholder.h
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--- /dev/null
+++ b/src/ui/previewholder.h
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+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#ifndef SEEN_PREVIEW_HOLDER_H
+#define SEEN_PREVIEW_HOLDER_H
+/*
+ * A simple interface for previewing representations.
+ * Used by Swatches
+ *
+ * Authors:
+ *   Jon A. Cruz
+ *
+ * Copyright (C) 2005 Jon A. Cruz
+ *
+ * Released under GNU GPL v2+, read the file 'COPYING' for more information.
+ */
+
+#include <gtkmm/bin.h>
+#include <ui/widget/preview.h>
+
+namespace Gtk {
+class Grid;
+class ScrolledWindow;
+}
+
+#include "enums.h"
+
+namespace Inkscape {
+namespace UI {
+
+class Previewable;
+
+class PreviewHolder : public Gtk::Bin
+{
+public:
+    PreviewHolder();
+    ~PreviewHolder() override;
+
+    virtual void clear();
+    virtual void addPreview( Previewable* preview );
+    virtual void freezeUpdates();
+    virtual void thawUpdates();
+    virtual void setStyle(UI::Widget::PreviewSize size,
+                          UI::Widget::ViewType    view,
+                          guint                   ratio,
+                          UI::Widget::BorderStyle border);
+    virtual void setOrientation(SPAnchorType how);
+    virtual int getColumnPref() const { return _prefCols; }
+    virtual void setColumnPref( int cols );
+    virtual UI::Widget::PreviewSize getPreviewSize() const { return _baseSize; }
+    virtual UI::Widget::ViewType getPreviewType() const { return _view; }
+    virtual guint getPreviewRatio() const { return _ratio; }
+    virtual UI::Widget::BorderStyle getPreviewBorder() const { return _border; }
+    virtual void setWrap( bool wrap );
+    virtual bool getWrap() const { return _wrap; }
+
+protected:
+    bool on_scroll_event(GdkEventScroll*) override;
+
+private:
+    void rebuildUI();
+    void calcGridSize( const Gtk::Widget* item, int itemCount, int& ncols, int& nrows );
+
+    std::vector<Previewable*> items;
+    Gtk::ScrolledWindow *_scroller;
+    Gtk::Grid *_insides;
+
+    int _prefCols;
+    bool _updatesFrozen;
+    SPAnchorType _anchor;
+    UI::Widget::PreviewSize _baseSize;
+    guint _ratio;
+    UI::Widget::ViewType _view;
+    bool _wrap;
+    UI::Widget::BorderStyle _border;
+};
+
+} //namespace UI
+} //namespace Inkscape
+
+#endif // SEEN_PREVIEW_HOLDER_H
+
+/*
+  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 :