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Serenity Operating System
1/*
2 * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are met:
7 *
8 * 1. Redistributions of source code must retain the above copyright notice, this
9 * list of conditions and the following disclaimer.
10 *
11 * 2. Redistributions in binary form must reproduce the above copyright notice,
12 * this list of conditions and the following disclaimer in the documentation
13 * and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
16 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
18 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
21 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
22 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
23 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
24 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25 */
26
27#pragma once
28
29#include <LibGUI/AbstractView.h>
30#include <LibGUI/Forward.h>
31
32namespace GUI {
33
34class ItemView : public AbstractView {
35 C_OBJECT(ItemView)
36public:
37 virtual ~ItemView() override;
38
39 int content_width() const;
40 int horizontal_padding() const { return m_horizontal_padding; }
41
42 void scroll_into_view(const ModelIndex&, Orientation);
43 Gfx::Size effective_item_size() const { return m_effective_item_size; }
44
45 int model_column() const { return m_model_column; }
46 void set_model_column(int column) { m_model_column = column; }
47
48 virtual ModelIndex index_at_event_position(const Gfx::Point&) const override;
49 Gfx::Point adjusted_position(const Gfx::Point&) const;
50
51 virtual void select_all() override;
52private:
53 ItemView();
54
55 virtual void did_update_model() override;
56 virtual void paint_event(PaintEvent&) override;
57 virtual void second_paint_event(PaintEvent&) override;
58 virtual void resize_event(ResizeEvent&) override;
59 virtual void mousedown_event(MouseEvent&) override;
60 virtual void mousemove_event(MouseEvent&) override;
61 virtual void mouseup_event(MouseEvent&) override;
62 virtual void keydown_event(KeyEvent&) override;
63 virtual void drag_move_event(DragEvent&) override;
64
65 int item_count() const;
66 Gfx::Rect item_rect(int item_index) const;
67 Vector<int> items_intersecting_rect(const Gfx::Rect&) const;
68 void update_content_size();
69 void get_item_rects(int item_index, const Gfx::Font&, const Variant& item_text, Gfx::Rect& item_rect, Gfx::Rect& icon_rect, Gfx::Rect& text_rect) const;
70
71 int m_horizontal_padding { 5 };
72 int m_model_column { 0 };
73 int m_visual_column_count { 0 };
74 int m_visual_row_count { 0 };
75
76 Gfx::Size m_effective_item_size { 80, 80 };
77
78 bool m_rubber_banding { false };
79 Gfx::Point m_rubber_band_origin;
80 Gfx::Point m_rubber_band_current;
81 Vector<ModelIndex> m_rubber_band_remembered_selection;
82
83 ModelIndex m_drop_candidate_index;
84};
85
86}