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/*
* Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
* Copyright (c) 2021-2022, Sam Atkins <atkinssj@serenityos.org>
* Copyright (c) 2021, Antonio Di Stefano <tonio9681@gmail.com>
* Copyright (c) 2022, the SerenityOS developers.
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <AK/Array.h>
#include <AK/LexicalPath.h>
#include <AK/StringView.h>
#include <LibCore/ConfigFile.h>
#include <LibGUI/AbstractThemePreview.h>
#include <LibGUI/Painter.h>
#include <LibGfx/Bitmap.h>
namespace GUI {
AbstractThemePreview::AbstractThemePreview(Gfx::Palette const& preview_palette)
: m_preview_palette(preview_palette)
{
m_active_window_icon = Gfx::Bitmap::load_from_file("/res/icons/16x16/window.png"sv).release_value_but_fixme_should_propagate_errors();
m_inactive_window_icon = Gfx::Bitmap::load_from_file("/res/icons/16x16/window.png"sv).release_value_but_fixme_should_propagate_errors();
m_default_close_bitmap = Gfx::Bitmap::load_from_file("/res/icons/16x16/window-close.png"sv).release_value_but_fixme_should_propagate_errors();
m_default_maximize_bitmap = Gfx::Bitmap::load_from_file("/res/icons/16x16/upward-triangle.png"sv).release_value_but_fixme_should_propagate_errors();
m_default_minimize_bitmap = Gfx::Bitmap::load_from_file("/res/icons/16x16/downward-triangle.png"sv).release_value_but_fixme_should_propagate_errors();
VERIFY(m_active_window_icon);
VERIFY(m_inactive_window_icon);
VERIFY(m_default_close_bitmap);
VERIFY(m_default_maximize_bitmap);
VERIFY(m_default_minimize_bitmap);
load_theme_bitmaps();
}
void AbstractThemePreview::load_theme_bitmaps()
{
auto load_bitmap = [](DeprecatedString const& path, DeprecatedString& last_path, RefPtr<Gfx::Bitmap>& bitmap) {
if (path.is_empty()) {
last_path = DeprecatedString::empty();
bitmap = nullptr;
} else if (last_path != path) {
auto bitmap_or_error = Gfx::Bitmap::load_from_file(path);
if (bitmap_or_error.is_error()) {
last_path = DeprecatedString::empty();
bitmap = nullptr;
} else {
last_path = path;
bitmap = bitmap_or_error.release_value();
}
}
};
auto buttons_path = m_preview_palette.title_button_icons_path();
load_bitmap(LexicalPath::absolute_path(buttons_path, "window-close.png"), m_last_close_path, m_close_bitmap);
load_bitmap(LexicalPath::absolute_path(buttons_path, "window-maximize.png"), m_last_maximize_path, m_maximize_bitmap);
load_bitmap(LexicalPath::absolute_path(buttons_path, "window-minimize.png"), m_last_minimize_path, m_minimize_bitmap);
load_bitmap(m_preview_palette.active_window_shadow_path(), m_last_active_window_shadow_path, m_active_window_shadow);
load_bitmap(m_preview_palette.inactive_window_shadow_path(), m_last_inactive_window_shadow_path, m_inactive_window_shadow);
load_bitmap(m_preview_palette.menu_shadow_path(), m_last_menu_shadow_path, m_menu_shadow);
load_bitmap(m_preview_palette.taskbar_shadow_path(), m_last_taskbar_shadow_path, m_taskbar_shadow);
load_bitmap(m_preview_palette.tooltip_shadow_path(), m_last_tooltip_shadow_path, m_tooltip_shadow);
}
void AbstractThemePreview::set_preview_palette(Gfx::Palette const& palette)
{
m_preview_palette = palette;
palette_changed();
if (on_palette_change)
on_palette_change();
load_theme_bitmaps();
update();
}
void AbstractThemePreview::set_theme(Core::AnonymousBuffer const& theme_buffer)
{
VERIFY(theme_buffer.is_valid());
m_preview_palette = Gfx::Palette(Gfx::PaletteImpl::create_with_anonymous_buffer(theme_buffer));
set_preview_palette(m_preview_palette);
}
ErrorOr<void> AbstractThemePreview::set_theme_from_file(StringView path, NonnullOwnPtr<Core::Stream::File> file)
{
auto config_file = TRY(Core::ConfigFile::open(path, move(file)));
auto theme = TRY(Gfx::load_system_theme(config_file));
m_preview_palette = Gfx::Palette(Gfx::PaletteImpl::create_with_anonymous_buffer(theme));
set_preview_palette(m_preview_palette);
return {};
}
void AbstractThemePreview::paint_window(StringView title, Gfx::IntRect const& rect, Gfx::WindowTheme::WindowState state, Gfx::Bitmap const& icon, int button_count)
{
GUI::Painter painter(*this);
struct Button {
Gfx::IntRect rect;
RefPtr<Gfx::Bitmap> bitmap;
};
int window_button_width = m_preview_palette.window_title_button_width();
int window_button_height = m_preview_palette.window_title_button_height();
auto titlebar_text_rect = Gfx::WindowTheme::current().titlebar_text_rect(Gfx::WindowTheme::WindowType::Normal, Gfx::WindowTheme::WindowMode::Other, rect, m_preview_palette);
int pos = titlebar_text_rect.right() + 1;
Array possible_buttons {
Button { {}, m_close_bitmap.is_null() ? m_default_close_bitmap : m_close_bitmap },
Button { {}, m_maximize_bitmap.is_null() ? m_default_maximize_bitmap : m_maximize_bitmap },
Button { {}, m_minimize_bitmap.is_null() ? m_default_minimize_bitmap : m_minimize_bitmap }
};
auto buttons = possible_buttons.span().trim(button_count);
for (auto& button : buttons) {
pos -= window_button_width;
Gfx::IntRect button_rect { pos, 0, window_button_width, window_button_height };
button_rect.center_vertically_within(titlebar_text_rect);
button.rect = button_rect;
}
auto frame_rect = Gfx::WindowTheme::current().frame_rect_for_window(Gfx::WindowTheme::WindowType::Normal, Gfx::WindowTheme::WindowMode::Other, rect, m_preview_palette, 0);
auto paint_shadow = [](Gfx::Painter& painter, Gfx::IntRect& frame_rect, Gfx::Bitmap const& shadow_bitmap) {
auto total_shadow_size = shadow_bitmap.height();
auto shadow_rect = frame_rect.inflated(total_shadow_size, total_shadow_size);
Gfx::StylePainter::paint_simple_rect_shadow(painter, shadow_rect, shadow_bitmap);
};
if ((state == Gfx::WindowTheme::WindowState::Active || state == Gfx::WindowTheme::WindowState::Highlighted) && m_active_window_shadow) {
paint_shadow(painter, frame_rect, *m_active_window_shadow);
} else if (state == Gfx::WindowTheme::WindowState::Inactive && m_inactive_window_shadow) {
paint_shadow(painter, frame_rect, *m_inactive_window_shadow);
}
Gfx::PainterStateSaver saver(painter);
painter.translate(frame_rect.location());
Gfx::WindowTheme::current().paint_normal_frame(painter, state, Gfx::WindowTheme::WindowMode::Other, rect, title, icon, m_preview_palette, buttons.last().rect, 0, false);
painter.fill_rect(rect.translated(-frame_rect.location()), m_preview_palette.color(Gfx::ColorRole::Background));
for (auto& button : buttons) {
if (!m_preview_palette.title_buttons_icon_only())
Gfx::StylePainter::paint_button(painter, button.rect, m_preview_palette, Gfx::ButtonStyle::Normal, false);
auto bitmap_rect = button.bitmap->rect().centered_within(button.rect);
painter.blit(bitmap_rect.location(), *button.bitmap, button.bitmap->rect());
}
}
void AbstractThemePreview::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(frame_inner_rect(), m_preview_palette.desktop_background());
paint_preview(event);
}
void AbstractThemePreview::center_window_group_within(Span<Window> windows, Gfx::IntRect const& bounds)
{
VERIFY(windows.size() >= 1);
auto to_frame_rect = [&](Gfx::IntRect const& rect) {
return Gfx::WindowTheme::current().frame_rect_for_window(
Gfx::WindowTheme::WindowType::Normal, Gfx::WindowTheme::WindowMode::Other, rect, m_preview_palette, 0);
};
auto leftmost_x_value = windows[0].rect.x();
auto topmost_y_value = windows[0].rect.y();
auto combind_frame_rect = to_frame_rect(windows[0].rect);
for (auto& window : windows.slice(1)) {
if (window.rect.x() < leftmost_x_value)
leftmost_x_value = window.rect.x();
if (window.rect.y() < topmost_y_value)
topmost_y_value = window.rect.y();
combind_frame_rect = combind_frame_rect.united(to_frame_rect(window.rect));
}
combind_frame_rect.center_within(bounds);
auto frame_offset = to_frame_rect({}).location();
for (auto& window : windows) {
window.rect.set_left(combind_frame_rect.left() + (window.rect.x() - leftmost_x_value) - frame_offset.x());
window.rect.set_top(combind_frame_rect.top() + (window.rect.y() - topmost_y_value) - frame_offset.y());
}
}
}
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