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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#include "BucketTool.h"
28#include "PaintableWidget.h"
29#include <AK/Queue.h>
30#include <AK/SinglyLinkedList.h>
31#include <LibGUI/Painter.h>
32#include <LibGfx/Bitmap.h>
33#include <stdio.h>
34
35BucketTool::BucketTool()
36{
37}
38
39BucketTool::~BucketTool()
40{
41}
42
43static void flood_fill(Gfx::Bitmap& bitmap, const Gfx::Point& start_position, Color target_color, Color fill_color)
44{
45 ASSERT(bitmap.bpp() == 32);
46
47 if (target_color == fill_color)
48 return;
49
50 Queue<Gfx::Point> queue;
51 queue.enqueue(start_position);
52 while (!queue.is_empty()) {
53 auto position = queue.dequeue();
54
55 if (bitmap.get_pixel<Gfx::BitmapFormat::RGB32>(position.x(), position.y()) != target_color)
56 continue;
57 bitmap.set_pixel<Gfx::BitmapFormat::RGB32>(position.x(), position.y(), fill_color);
58
59 if (position.x() != 0)
60 queue.enqueue(position.translated(-1, 0));
61
62 if (position.x() != bitmap.width() - 1)
63 queue.enqueue(position.translated(1, 0));
64
65 if (position.y() != 0)
66 queue.enqueue(position.translated(0, -1));
67
68 if (position.y() != bitmap.height() - 1)
69 queue.enqueue(position.translated(0, 1));
70 }
71}
72
73void BucketTool::on_mousedown(GUI::MouseEvent& event)
74{
75 if (!m_widget->rect().contains(event.position()))
76 return;
77
78 GUI::Painter painter(m_widget->bitmap());
79 auto target_color = m_widget->bitmap().get_pixel(event.x(), event.y());
80
81 flood_fill(m_widget->bitmap(), event.position(), target_color, m_widget->color_for(event));
82
83 m_widget->update();
84}