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117 lines
3.2 KiB
117 lines
3.2 KiB
/******************************************************************** |
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KWin - the KDE window manager |
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This file is part of the KDE project. |
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Copyright (C) 2015 Martin Gräßlin <mgraesslin@kde.org> |
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This program is free software; you can redistribute it and/or modify |
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it under the terms of the GNU General Public License as published by |
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the Free Software Foundation; either version 2 of the License, or |
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(at your option) any later version. |
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This program is distributed in the hope that it will be useful, |
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but WITHOUT ANY WARRANTY; without even the implied warranty of |
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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GNU General Public License for more details. |
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You should have received a copy of the GNU General Public License |
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along with this program. If not, see <http://www.gnu.org/licenses/>. |
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*********************************************************************/ |
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#include "wayland_cursor_theme.h" |
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#include "cursor.h" |
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#include "wayland_server.h" |
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#include "screens.h" |
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// Qt |
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#include <QVector> |
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// KWayland |
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#include <KWayland/Client/shm_pool.h> |
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#include <KWayland/Server/display.h> |
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#include <KWayland/Server/output_interface.h> |
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// Wayland |
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#include <wayland-cursor.h> |
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namespace KWin |
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{ |
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WaylandCursorTheme::WaylandCursorTheme(KWayland::Client::ShmPool *shm, QObject *parent) |
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: QObject(parent) |
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, m_theme(nullptr) |
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, m_shm(shm) |
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{ |
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connect(screens(), &Screens::maxScaleChanged, this, &WaylandCursorTheme::loadTheme); |
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} |
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WaylandCursorTheme::~WaylandCursorTheme() |
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{ |
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destroyTheme(); |
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} |
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void WaylandCursorTheme::loadTheme() |
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{ |
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if (!m_shm->isValid()) { |
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return; |
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} |
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Cursor *c = Cursor::self(); |
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int size = c->themeSize(); |
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if (size == 0) { |
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//set a default size |
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size = 24; |
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} |
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size *= screens()->maxScale(); |
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auto theme = wl_cursor_theme_load(c->themeName().toUtf8().constData(), |
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size, m_shm->shm()); |
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if (theme) { |
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if (!m_theme) { |
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// so far the theme had not been created, this means we need to start tracking theme changes |
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connect(c, &Cursor::themeChanged, this, &WaylandCursorTheme::loadTheme); |
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} else { |
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destroyTheme(); |
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} |
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m_theme = theme; |
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emit themeChanged(); |
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} |
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} |
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void WaylandCursorTheme::destroyTheme() |
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{ |
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if (!m_theme) { |
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return; |
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} |
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wl_cursor_theme_destroy(m_theme); |
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m_theme = nullptr; |
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} |
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wl_cursor_image *WaylandCursorTheme::get(CursorShape shape) |
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{ |
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return get(shape.name()); |
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} |
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wl_cursor_image *WaylandCursorTheme::get(const QByteArray &name) |
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{ |
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if (!m_theme) { |
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loadTheme(); |
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} |
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if (!m_theme) { |
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// loading cursor failed |
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return nullptr; |
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} |
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wl_cursor *c = wl_cursor_theme_get_cursor(m_theme, name.constData()); |
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if (!c || c->image_count <= 0) { |
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const auto &names = Cursor::self()->cursorAlternativeNames(name); |
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for (auto it = names.begin(), end = names.end(); it != end; it++) { |
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c = wl_cursor_theme_get_cursor(m_theme, (*it).constData()); |
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if (c && c->image_count > 0) { |
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break; |
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} |
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} |
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} |
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if (!c || c->image_count <= 0) { |
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return nullptr; |
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} |
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// TODO: who deletes c? |
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return c->images[0]; |
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} |
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}
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