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46 lines
1.4 KiB
C++
46 lines
1.4 KiB
C++
#pragma once
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#include <gtkmm.h>
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class DragListBox : public Gtk::ListBox {
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public:
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DragListBox();
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void row_drag_begin(Gtk::Widget *widget, const Glib::RefPtr<Gdk::DragContext> &context);
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bool on_drag_motion(const Glib::RefPtr<Gdk::DragContext> &context, gint x, gint y, guint time) override;
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void on_drag_leave(const Glib::RefPtr<Gdk::DragContext> &context, guint time) override;
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void check_scroll(gint y);
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bool scroll();
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void on_drag_data_received(const Glib::RefPtr<Gdk::DragContext> &context, int x, int y, const Gtk::SelectionData &selection_data, guint info, guint time) override;
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void add_draggable(Gtk::ListBoxRow *widget);
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private:
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Gtk::ListBoxRow *m_hover_row = nullptr;
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Gtk::ListBoxRow *m_drag_row = nullptr;
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bool m_top = false;
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int m_hover_top = 0;
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int m_hover_bottom = 0;
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bool m_should_scroll = false;
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bool m_scrolling = false;
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bool m_scroll_up = false;
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constexpr static int SCROLL_STEP_SIZE = 8;
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constexpr static int SCROLL_DISTANCE = 30;
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constexpr static int SCROLL_DELAY = 50;
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const std::vector<Gtk::TargetEntry> m_entries = {
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Gtk::TargetEntry("GTK_LIST_BOX_ROW", Gtk::TARGET_SAME_APP, 0),
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};
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using type_signal_on_drop = sigc::signal<bool, Gtk::ListBoxRow *, int /* new index */>;
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type_signal_on_drop m_signal_on_drop;
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public:
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type_signal_on_drop signal_on_drop(); // return true to prevent drop
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};
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