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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 <AK/Assertions.h>
28#include <AK/StringBuilder.h>
29#include <LibGUI/Painter.h>
30#include <LibGUI/ProgressBar.h>
31#include <LibGfx/Palette.h>
32
33namespace GUI {
34
35ProgressBar::ProgressBar()
36{
37}
38
39ProgressBar::~ProgressBar()
40{
41}
42
43void ProgressBar::set_value(int value)
44{
45 if (m_value == value)
46 return;
47 m_value = value;
48 update();
49}
50
51void ProgressBar::set_range(int min, int max)
52{
53 ASSERT(min < max);
54 m_min = min;
55 m_max = max;
56 m_value = clamp(m_value, m_min, m_max);
57}
58
59void ProgressBar::paint_event(PaintEvent& event)
60{
61 Frame::paint_event(event);
62
63 Painter painter(*this);
64 auto rect = frame_inner_rect();
65 painter.add_clip_rect(rect);
66 painter.add_clip_rect(event.rect());
67
68 String progress_text;
69 if (m_format != Format::NoText) {
70 // Then we draw the progress text over the gradient.
71 // We draw it twice, once offset (1, 1) for a drop shadow look.
72 StringBuilder builder;
73 builder.append(m_caption);
74 if (m_format == Format::Percentage) {
75 float range_size = m_max - m_min;
76 float progress = (m_value - m_min) / range_size;
77 builder.appendf("%d%%", (int)(progress * 100));
78 } else if (m_format == Format::ValueSlashMax) {
79 builder.appendf("%d/%d", m_value, m_max);
80 }
81 progress_text = builder.to_string();
82 }
83
84 Gfx::StylePainter::paint_progress_bar(painter, rect, palette(), m_min, m_max, m_value, progress_text);
85}
86
87}