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
|
/*
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "GraphWidget.h"
#include <LibGUI/Painter.h>
#include <LibGfx/Font.h>
GraphWidget::GraphWidget()
{
}
GraphWidget::~GraphWidget()
{
}
void GraphWidget::add_value(int value)
{
m_values.enqueue(value);
update();
}
void GraphWidget::paint_event(GUI::PaintEvent& event)
{
GUI::Frame::paint_event(event);
GUI::Painter painter(*this);
painter.add_clip_rect(event.rect());
painter.add_clip_rect(frame_inner_rect());
painter.fill_rect(event.rect(), Color::Black);
auto inner_rect = frame_inner_rect();
float scale = (float)inner_rect.height() / (float)m_max;
Gfx::IntPoint prev_point;
for (size_t i = 0; i < m_values.size(); ++i) {
int x = inner_rect.right() - (i * 2) + 1;
if (x < 0)
break;
float scaled_value = (float)m_values.at(m_values.size() - i - 1) * scale;
Gfx::IntPoint point = { x, inner_rect.bottom() - (int)scaled_value };
if (i != 0)
painter.draw_line(prev_point, point, m_graph_color);
prev_point = point;
}
if (!m_values.is_empty() && text_formatter) {
Gfx::IntRect text_rect = inner_rect.shrunken(8, 8);
text_rect.set_height(font().glyph_height());
auto text = text_formatter(m_values.last(), m_max);
painter.draw_text(text_rect.translated(1, 1), text.characters(), Gfx::TextAlignment::CenterRight, Color::Black);
painter.draw_text(text_rect, text.characters(), Gfx::TextAlignment::CenterRight, m_text_color);
}
}
|
