jcs.org
Serenity Operating System
1/*
2 * Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
3 * Copyright (c) 2021-2022, Sam Atkins <atkinssj@serenityos.org>
4 * Copyright (c) 2021, Antonio Di Stefano <tonio9681@gmail.com>
5 * Copyright (c) 2022, the SerenityOS developers.
6 *
7 * SPDX-License-Identifier: BSD-2-Clause
8 */
9
10#include <AK/Array.h>
11#include <AK/LexicalPath.h>
12#include <AK/StringView.h>
13#include <LibCore/ConfigFile.h>
14#include <LibGUI/AbstractThemePreview.h>
15#include <LibGUI/Painter.h>
16#include <LibGfx/Bitmap.h>
17
18namespace GUI {
19
20AbstractThemePreview::AbstractThemePreview(Gfx::Palette const& preview_palette)
21 : m_preview_palette(preview_palette)
22{
23 m_active_window_icon = Gfx::Bitmap::load_from_file("/res/icons/16x16/window.png"sv).release_value_but_fixme_should_propagate_errors();
24 m_inactive_window_icon = Gfx::Bitmap::load_from_file("/res/icons/16x16/window.png"sv).release_value_but_fixme_should_propagate_errors();
25
26 m_default_close_bitmap = Gfx::Bitmap::load_from_file("/res/icons/16x16/window-close.png"sv).release_value_but_fixme_should_propagate_errors();
27 m_default_maximize_bitmap = Gfx::Bitmap::load_from_file("/res/icons/16x16/upward-triangle.png"sv).release_value_but_fixme_should_propagate_errors();
28 m_default_minimize_bitmap = Gfx::Bitmap::load_from_file("/res/icons/16x16/downward-triangle.png"sv).release_value_but_fixme_should_propagate_errors();
29
30 VERIFY(m_active_window_icon);
31 VERIFY(m_inactive_window_icon);
32 VERIFY(m_default_close_bitmap);
33 VERIFY(m_default_maximize_bitmap);
34 VERIFY(m_default_minimize_bitmap);
35
36 load_theme_bitmaps();
37}
38
39void AbstractThemePreview::load_theme_bitmaps()
40{
41 auto load_bitmap = [](DeprecatedString const& path, DeprecatedString& last_path, RefPtr<Gfx::Bitmap>& bitmap) {
42 if (path.is_empty()) {
43 last_path = DeprecatedString::empty();
44 bitmap = nullptr;
45 } else if (last_path != path) {
46 auto bitmap_or_error = Gfx::Bitmap::load_from_file(path);
47 if (bitmap_or_error.is_error()) {
48 last_path = DeprecatedString::empty();
49 bitmap = nullptr;
50 } else {
51 last_path = path;
52 bitmap = bitmap_or_error.release_value();
53 }
54 }
55 };
56
57 auto buttons_path = m_preview_palette.title_button_icons_path();
58
59 load_bitmap(LexicalPath::absolute_path(buttons_path, "window-close.png"), m_last_close_path, m_close_bitmap);
60 load_bitmap(LexicalPath::absolute_path(buttons_path, "window-maximize.png"), m_last_maximize_path, m_maximize_bitmap);
61 load_bitmap(LexicalPath::absolute_path(buttons_path, "window-minimize.png"), m_last_minimize_path, m_minimize_bitmap);
62
63 load_bitmap(m_preview_palette.active_window_shadow_path(), m_last_active_window_shadow_path, m_active_window_shadow);
64 load_bitmap(m_preview_palette.inactive_window_shadow_path(), m_last_inactive_window_shadow_path, m_inactive_window_shadow);
65 load_bitmap(m_preview_palette.menu_shadow_path(), m_last_menu_shadow_path, m_menu_shadow);
66 load_bitmap(m_preview_palette.taskbar_shadow_path(), m_last_taskbar_shadow_path, m_taskbar_shadow);
67 load_bitmap(m_preview_palette.tooltip_shadow_path(), m_last_tooltip_shadow_path, m_tooltip_shadow);
68}
69
70void AbstractThemePreview::set_preview_palette(Gfx::Palette& palette)
71{
72 m_preview_palette = palette;
73 palette_changed();
74 if (on_palette_change)
75 on_palette_change();
76 load_theme_bitmaps();
77 update();
78}
79
80void AbstractThemePreview::set_theme(Core::AnonymousBuffer const& theme_buffer)
81{
82 VERIFY(theme_buffer.is_valid());
83 m_preview_palette = Gfx::Palette(Gfx::PaletteImpl::create_with_anonymous_buffer(theme_buffer));
84 set_preview_palette(m_preview_palette);
85}
86
87ErrorOr<void> AbstractThemePreview::set_theme_from_file(StringView path, NonnullOwnPtr<Core::File> file)
88{
89 auto config_file = TRY(Core::ConfigFile::open(path, move(file)));
90 auto theme = TRY(Gfx::load_system_theme(config_file));
91
92 m_preview_palette = Gfx::Palette(Gfx::PaletteImpl::create_with_anonymous_buffer(theme));
93 set_preview_palette(m_preview_palette);
94 return {};
95}
96
97void AbstractThemePreview::paint_window(StringView title, Gfx::IntRect const& rect, Gfx::WindowTheme::WindowState state, Gfx::Bitmap const& icon, int button_count)
98{
99 GUI::Painter painter(*this);
100
101 struct Button {
102 Gfx::IntRect rect;
103 RefPtr<Gfx::Bitmap> bitmap;
104 };
105
106 int window_button_width = m_preview_palette.window_title_button_width();
107 int window_button_height = m_preview_palette.window_title_button_height();
108 auto titlebar_text_rect = Gfx::WindowTheme::current().titlebar_text_rect(Gfx::WindowTheme::WindowType::Normal, Gfx::WindowTheme::WindowMode::Other, rect, m_preview_palette);
109 int pos = titlebar_text_rect.right() + 1;
110
111 Array possible_buttons {
112 Button { {}, m_close_bitmap.is_null() ? m_default_close_bitmap : m_close_bitmap },
113 Button { {}, m_maximize_bitmap.is_null() ? m_default_maximize_bitmap : m_maximize_bitmap },
114 Button { {}, m_minimize_bitmap.is_null() ? m_default_minimize_bitmap : m_minimize_bitmap }
115 };
116
117 auto buttons = possible_buttons.span().trim(button_count);
118
119 for (auto& button : buttons) {
120 pos -= window_button_width;
121 Gfx::IntRect button_rect { pos, 0, window_button_width, window_button_height };
122 button_rect.center_vertically_within(titlebar_text_rect);
123 button.rect = button_rect;
124 }
125
126 auto frame_rect = Gfx::WindowTheme::current().frame_rect_for_window(Gfx::WindowTheme::WindowType::Normal, Gfx::WindowTheme::WindowMode::Other, rect, m_preview_palette, 0);
127
128 auto paint_shadow = [](Gfx::Painter& painter, Gfx::IntRect& frame_rect, Gfx::Bitmap const& shadow_bitmap) {
129 auto total_shadow_size = shadow_bitmap.height();
130 auto shadow_rect = frame_rect.inflated(total_shadow_size, total_shadow_size);
131 Gfx::StylePainter::paint_simple_rect_shadow(painter, shadow_rect, shadow_bitmap);
132 };
133
134 if ((state == Gfx::WindowTheme::WindowState::Active || state == Gfx::WindowTheme::WindowState::Highlighted) && m_active_window_shadow) {
135 paint_shadow(painter, frame_rect, *m_active_window_shadow);
136 } else if (state == Gfx::WindowTheme::WindowState::Inactive && m_inactive_window_shadow) {
137 paint_shadow(painter, frame_rect, *m_inactive_window_shadow);
138 }
139
140 Gfx::PainterStateSaver saver(painter);
141 painter.translate(frame_rect.location());
142 Gfx::WindowTheme::current().paint_normal_frame(painter, state, Gfx::WindowTheme::WindowMode::Other, rect, title, icon, m_preview_palette, buttons.last().rect, 0, false);
143 painter.fill_rect(rect.translated(-frame_rect.location()), m_preview_palette.color(Gfx::ColorRole::Background));
144
145 for (auto& button : buttons) {
146 if (!m_preview_palette.title_buttons_icon_only())
147 Gfx::StylePainter::paint_button(painter, button.rect, m_preview_palette, Gfx::ButtonStyle::Normal, false);
148 auto bitmap_rect = button.bitmap->rect().centered_within(button.rect);
149 painter.blit(bitmap_rect.location(), *button.bitmap, button.bitmap->rect());
150 }
151}
152
153void AbstractThemePreview::paint_event(GUI::PaintEvent& event)
154{
155 GUI::Frame::paint_event(event);
156 GUI::Painter painter(*this);
157
158 painter.add_clip_rect(event.rect());
159 painter.add_clip_rect(frame_inner_rect());
160
161 painter.fill_rect(frame_inner_rect(), m_preview_palette.desktop_background());
162 paint_preview(event);
163}
164
165void AbstractThemePreview::center_window_group_within(Span<Window> windows, Gfx::IntRect const& bounds)
166{
167 VERIFY(windows.size() >= 1);
168
169 auto to_frame_rect = [&](Gfx::IntRect const& rect) {
170 return Gfx::WindowTheme::current().frame_rect_for_window(
171 Gfx::WindowTheme::WindowType::Normal, Gfx::WindowTheme::WindowMode::Other, rect, m_preview_palette, 0);
172 };
173
174 auto leftmost_x_value = windows[0].rect.x();
175 auto topmost_y_value = windows[0].rect.y();
176 auto combind_frame_rect = to_frame_rect(windows[0].rect);
177 for (auto& window : windows.slice(1)) {
178 if (window.rect.x() < leftmost_x_value)
179 leftmost_x_value = window.rect.x();
180 if (window.rect.y() < topmost_y_value)
181 topmost_y_value = window.rect.y();
182 combind_frame_rect = combind_frame_rect.united(to_frame_rect(window.rect));
183 }
184
185 combind_frame_rect.center_within(bounds);
186 auto frame_offset = to_frame_rect({}).location();
187 for (auto& window : windows) {
188 window.rect.set_left(combind_frame_rect.left() + (window.rect.x() - leftmost_x_value) - frame_offset.x());
189 window.rect.set_top(combind_frame_rect.top() + (window.rect.y() - topmost_y_value) - frame_offset.y());
190 }
191}
192}