jcs.org
Serenity Operating System
1/*
2 * Copyright (c) 2022, MacDue <macdue@dueutil.tech>
3 *
4 * SPDX-License-Identifier: BSD-2-Clause
5 */
6
7#include "HighlightPreviewWidget.h"
8#include <AK/DeprecatedString.h>
9#include <LibCore/ConfigFile.h>
10#include <LibGUI/ConnectionToWindowServer.h>
11#include <LibGUI/Painter.h>
12#include <LibGfx/AntiAliasingPainter.h>
13
14namespace MouseSettings {
15
16HighlightPreviewWidget::HighlightPreviewWidget(Gfx::Palette const& palette)
17 : GUI::AbstractThemePreview(palette)
18{
19 (void)reload_cursor();
20}
21
22ErrorOr<void> HighlightPreviewWidget::reload_cursor()
23{
24 auto cursor_theme = GUI::ConnectionToWindowServer::the().get_cursor_theme();
25 auto theme_path = DeprecatedString::formatted("/res/cursor-themes/{}/{}", cursor_theme, "Config.ini");
26 auto cursor_theme_config = TRY(Core::ConfigFile::open(theme_path));
27 auto load_bitmap = [](StringView path, StringView default_path) {
28 auto maybe_bitmap = Gfx::Bitmap::load_from_file(path);
29 if (!maybe_bitmap.is_error())
30 return maybe_bitmap;
31 return Gfx::Bitmap::load_from_file(default_path);
32 };
33 constexpr auto default_cursor_path = "/res/cursor-themes/Default/arrow.x2y2.png"sv;
34 auto cursor_path = DeprecatedString::formatted("/res/cursor-themes/{}/{}",
35 cursor_theme, cursor_theme_config->read_entry("Cursor", "Arrow"));
36 m_cursor_bitmap = TRY(load_bitmap(cursor_path, default_cursor_path));
37 m_cursor_params = Gfx::CursorParams::parse_from_filename(cursor_path, m_cursor_bitmap->rect().center()).constrained(*m_cursor_bitmap);
38 // Setup cursor animation:
39 if (m_cursor_params.frames() > 1 && m_cursor_params.frame_ms() > 0) {
40 m_frame_timer = TRY(Core::Timer::create_repeating(m_cursor_params.frame_ms(), [&] {
41 m_cursor_frame = (m_cursor_frame + 1) % m_cursor_params.frames();
42 update();
43 }));
44 m_frame_timer->start();
45 } else {
46 m_frame_timer = nullptr;
47 }
48 return {};
49}
50
51void HighlightPreviewWidget::paint_preview(GUI::PaintEvent&)
52{
53 GUI::Painter painter(*this);
54 Gfx::AntiAliasingPainter aa_painter { painter };
55 Gfx::IntRect highlight_rect { 0, 0, m_radius * 2, m_radius * 2 };
56 highlight_rect.center_within(frame_inner_rect());
57 aa_painter.fill_ellipse(highlight_rect, m_color);
58 if (m_cursor_bitmap) {
59 auto cursor_rect = m_cursor_bitmap->rect();
60 if (m_cursor_params.frames() > 1)
61 cursor_rect.set_width(cursor_rect.width() / m_cursor_params.frames());
62 painter.blit(cursor_rect.centered_within(frame_inner_rect()).location(), *m_cursor_bitmap, cursor_rect.translated(m_cursor_frame * cursor_rect.width(), 0));
63 }
64}
65
66}