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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/Frame.h>
30#include <LibGfx/FloatPoint.h>
31
32class QSLabel;
33
34class QSWidget final : public GUI::Frame {
35 C_OBJECT(QSWidget)
36public:
37 virtual ~QSWidget() override;
38
39 const Gfx::Bitmap* bitmap() const { return m_bitmap.ptr(); }
40 const String& path() const { return m_path; }
41
42 void load_from_file(const String&);
43
44 Function<void(int)> on_scale_change;
45 Function<void(const GUI::DropEvent&)> on_drop;
46
47private:
48 QSWidget();
49 virtual void paint_event(GUI::PaintEvent&) override;
50 virtual void resize_event(GUI::ResizeEvent&) override;
51 virtual void mousedown_event(GUI::MouseEvent&) override;
52 virtual void mouseup_event(GUI::MouseEvent&) override;
53 virtual void mousemove_event(GUI::MouseEvent&) override;
54 virtual void mousewheel_event(GUI::MouseEvent&) override;
55 virtual void drop_event(GUI::DropEvent&) override;
56
57 void relayout();
58
59 String m_path;
60 RefPtr<Gfx::Bitmap> m_bitmap;
61
62 Gfx::Rect m_bitmap_rect;
63 int m_scale { 100 };
64 Gfx::FloatPoint m_pan_origin;
65
66 Gfx::Point m_click_position;
67 Gfx::FloatPoint m_saved_pan_origin;
68};