1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
|
/*
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include "BucketTool.h"
#include "ImageEditor.h"
#include "Layer.h"
#include <AK/Queue.h>
#include <LibGUI/BoxLayout.h>
#include <LibGUI/Label.h>
#include <LibGUI/Painter.h>
#include <LibGUI/Slider.h>
#include <LibGfx/Bitmap.h>
#include <LibGfx/Rect.h>
namespace PixelPaint {
BucketTool::BucketTool()
{
}
BucketTool::~BucketTool()
{
}
static float color_distance_squared(Gfx::Color const& lhs, Gfx::Color const& rhs)
{
int a = rhs.red() - lhs.red();
int b = rhs.green() - lhs.green();
int c = rhs.blue() - lhs.blue();
return (a * a + b * b + c * c) / (255.0f * 255.0f);
}
static void flood_fill(Gfx::Bitmap& bitmap, Gfx::IntPoint const& start_position, Color target_color, Color fill_color, int threshold)
{
VERIFY(bitmap.bpp() == 32);
if (target_color == fill_color)
return;
if (!bitmap.rect().contains(start_position))
return;
float threshold_normalized_squared = (threshold / 100.0f) * (threshold / 100.0f);
Queue<Gfx::IntPoint> queue;
queue.enqueue(start_position);
while (!queue.is_empty()) {
auto position = queue.dequeue();
auto pixel_color = bitmap.get_pixel<Gfx::StorageFormat::BGRA8888>(position.x(), position.y());
if (color_distance_squared(pixel_color, target_color) > threshold_normalized_squared)
continue;
bitmap.set_pixel<Gfx::StorageFormat::BGRA8888>(position.x(), position.y(), fill_color);
if (position.x() != 0)
queue.enqueue(position.translated(-1, 0));
if (position.x() != bitmap.width() - 1)
queue.enqueue(position.translated(1, 0));
if (position.y() != 0)
queue.enqueue(position.translated(0, -1));
if (position.y() != bitmap.height() - 1)
queue.enqueue(position.translated(0, 1));
}
}
void BucketTool::on_mousedown(Layer& layer, GUI::MouseEvent& event, GUI::MouseEvent&)
{
if (!layer.rect().contains(event.position()))
return;
GUI::Painter painter(layer.bitmap());
auto target_color = layer.bitmap().get_pixel(event.x(), event.y());
flood_fill(layer.bitmap(), event.position(), target_color, m_editor->color_for(event), m_threshold);
layer.did_modify_bitmap();
m_editor->did_complete_action();
}
GUI::Widget* BucketTool::get_properties_widget()
{
if (!m_properties_widget) {
m_properties_widget = GUI::Widget::construct();
m_properties_widget->set_layout<GUI::VerticalBoxLayout>();
auto& threshold_container = m_properties_widget->add<GUI::Widget>();
threshold_container.set_fixed_height(20);
threshold_container.set_layout<GUI::HorizontalBoxLayout>();
auto& threshold_label = threshold_container.add<GUI::Label>("Threshold:");
threshold_label.set_text_alignment(Gfx::TextAlignment::CenterLeft);
threshold_label.set_fixed_size(80, 20);
auto& threshold_slider = threshold_container.add<GUI::HorizontalSlider>();
threshold_slider.set_fixed_height(20);
threshold_slider.set_range(0, 100);
threshold_slider.set_value(m_threshold);
threshold_slider.on_change = [this](int value) {
m_threshold = value;
};
}
return m_properties_widget.ptr();
}
}
|
