diff options
Diffstat (limited to 'src/platformsupport/eglconvenience/qeglplatformcursor.cpp')
| -rw-r--r-- | src/platformsupport/eglconvenience/qeglplatformcursor.cpp | 410 |
1 files changed, 0 insertions, 410 deletions
diff --git a/src/platformsupport/eglconvenience/qeglplatformcursor.cpp b/src/platformsupport/eglconvenience/qeglplatformcursor.cpp deleted file mode 100644 index 09243487c7..0000000000 --- a/src/platformsupport/eglconvenience/qeglplatformcursor.cpp +++ /dev/null @@ -1,410 +0,0 @@ -/**************************************************************************** -** -** Copyright (C) 2015 The Qt Company Ltd. -** Contact: http://www.qt.io/licensing/ -** -** This file is part of the plugins of the Qt Toolkit. -** -** $QT_BEGIN_LICENSE:LGPL21$ -** Commercial License Usage -** Licensees holding valid commercial Qt licenses may use this file in -** accordance with the commercial license agreement provided with the -** Software or, alternatively, in accordance with the terms contained in -** a written agreement between you and The Qt Company. For licensing terms -** and conditions see http://www.qt.io/terms-conditions. For further -** information use the contact form at http://www.qt.io/contact-us. -** -** GNU Lesser General Public License Usage -** Alternatively, this file may be used under the terms of the GNU Lesser -** General Public License version 2.1 or version 3 as published by the Free -** Software Foundation and appearing in the file LICENSE.LGPLv21 and -** LICENSE.LGPLv3 included in the packaging of this file. Please review the -** following information to ensure the GNU Lesser General Public License -** requirements will be met: https://www.gnu.org/licenses/lgpl.html and -** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. -** -** As a special exception, The Qt Company gives you certain additional -** rights. These rights are described in The Qt Company LGPL Exception -** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. -** -** $QT_END_LICENSE$ -** -****************************************************************************/ - -#include <qpa/qwindowsysteminterface.h> -#include <QtGui/QOpenGLContext> -#include <QtGui/QOpenGLShaderProgram> -#include <QtCore/QJsonDocument> -#include <QtCore/QJsonArray> -#include <QtCore/QJsonObject> -#include <QtDebug> - -#include <QtGui/private/qguiapplication_p.h> - -#include "qeglplatformcursor_p.h" -#include "qeglplatformintegration_p.h" -#include "qeglplatformscreen_p.h" - -QT_BEGIN_NAMESPACE - -/*! - \class QEGLPlatformCursor - \brief Mouse cursor implementation using OpenGL. - \since 5.2 - \internal - \ingroup qpa - */ - -QEGLPlatformCursor::QEGLPlatformCursor(QPlatformScreen *screen) - : m_visible(true), - m_screen(static_cast<QEGLPlatformScreen *>(screen)), - m_program(0), - m_vertexCoordEntry(0), - m_textureCoordEntry(0), - m_textureEntry(0), - m_deviceListener(0), - m_updateRequested(false) -{ - QByteArray hideCursorVal = qgetenv("QT_QPA_EGLFS_HIDECURSOR"); - if (!hideCursorVal.isEmpty()) - m_visible = hideCursorVal.toInt() == 0; - if (!m_visible) - return; - - // Try to load the cursor atlas. If this fails, m_visible is set to false and - // paintOnScreen() and setCurrentCursor() become no-ops. - initCursorAtlas(); - - // initialize the cursor -#ifndef QT_NO_CURSOR - QCursor cursor(Qt::ArrowCursor); - setCurrentCursor(&cursor); -#endif - - m_deviceListener = new QEGLPlatformCursorDeviceListener(this); - connect(QGuiApplicationPrivate::inputDeviceManager(), &QInputDeviceManager::deviceListChanged, - m_deviceListener, &QEGLPlatformCursorDeviceListener::onDeviceListChanged); - updateMouseStatus(); -} - -QEGLPlatformCursor::~QEGLPlatformCursor() -{ - resetResources(); - delete m_deviceListener; -} - -void QEGLPlatformCursor::updateMouseStatus() -{ - m_visible = m_deviceListener->hasMouse(); -} - -bool QEGLPlatformCursorDeviceListener::hasMouse() const -{ - return QGuiApplicationPrivate::inputDeviceManager()->deviceCount(QInputDeviceManager::DeviceTypePointer) > 0; -} - -void QEGLPlatformCursorDeviceListener::onDeviceListChanged(QInputDeviceManager::DeviceType type) -{ - if (type == QInputDeviceManager::DeviceTypePointer) - m_cursor->updateMouseStatus(); -} - -void QEGLPlatformCursor::resetResources() -{ - if (QOpenGLContext::currentContext()) { - delete m_program; - glDeleteTextures(1, &m_cursor.customCursorTexture); - glDeleteTextures(1, &m_cursorAtlas.texture); - } - m_program = 0; - m_cursor.customCursorTexture = 0; - m_cursor.customCursorPending = !m_cursor.customCursorImage.isNull(); - m_cursorAtlas.texture = 0; -} - -void QEGLPlatformCursor::createShaderPrograms() -{ - static const char *textureVertexProgram = - "attribute highp vec2 vertexCoordEntry;\n" - "attribute highp vec2 textureCoordEntry;\n" - "varying highp vec2 textureCoord;\n" - "void main() {\n" - " textureCoord = textureCoordEntry;\n" - " gl_Position = vec4(vertexCoordEntry, 1.0, 1.0);\n" - "}\n"; - - static const char *textureFragmentProgram = - "uniform sampler2D texture;\n" - "varying highp vec2 textureCoord;\n" - "void main() {\n" - " gl_FragColor = texture2D(texture, textureCoord).bgra;\n" - "}\n"; - - m_program = new QOpenGLShaderProgram; - m_program->addShaderFromSourceCode(QOpenGLShader::Vertex, textureVertexProgram); - m_program->addShaderFromSourceCode(QOpenGLShader::Fragment, textureFragmentProgram); - m_program->link(); - - m_vertexCoordEntry = m_program->attributeLocation("vertexCoordEntry"); - m_textureCoordEntry = m_program->attributeLocation("textureCoordEntry"); - m_textureEntry = m_program->uniformLocation("texture"); -} - -void QEGLPlatformCursor::createCursorTexture(uint *texture, const QImage &image) -{ - if (!*texture) - glGenTextures(1, texture); - glBindTexture(GL_TEXTURE_2D, *texture); - glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); - glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); - glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE); - glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE); - - glTexImage2D(GL_TEXTURE_2D, 0 /* level */, GL_RGBA, image.width(), image.height(), 0 /* border */, - GL_RGBA, GL_UNSIGNED_BYTE, image.constBits()); -} - -void QEGLPlatformCursor::initCursorAtlas() -{ - static QByteArray json = qgetenv("QT_QPA_EGLFS_CURSOR"); - if (json.isEmpty()) - json = ":/cursor.json"; - - QFile file(QString::fromUtf8(json)); - if (!file.open(QFile::ReadOnly)) { - m_visible = false; - return; - } - - QJsonDocument doc = QJsonDocument::fromJson(file.readAll()); - QJsonObject object = doc.object(); - - QString atlas = object.value(QLatin1String("image")).toString(); - Q_ASSERT(!atlas.isEmpty()); - - const int cursorsPerRow = object.value(QLatin1String("cursorsPerRow")).toDouble(); - Q_ASSERT(cursorsPerRow); - m_cursorAtlas.cursorsPerRow = cursorsPerRow; - - const QJsonArray hotSpots = object.value(QLatin1String("hotSpots")).toArray(); - Q_ASSERT(hotSpots.count() == Qt::LastCursor + 1); - for (int i = 0; i < hotSpots.count(); i++) { - QPoint hotSpot(hotSpots[i].toArray()[0].toDouble(), hotSpots[i].toArray()[1].toDouble()); - m_cursorAtlas.hotSpots << hotSpot; - } - - QImage image = QImage(atlas).convertToFormat(QImage::Format_ARGB32_Premultiplied); - m_cursorAtlas.cursorWidth = image.width() / m_cursorAtlas.cursorsPerRow; - m_cursorAtlas.cursorHeight = image.height() / ((Qt::LastCursor + cursorsPerRow) / cursorsPerRow); - m_cursorAtlas.width = image.width(); - m_cursorAtlas.height = image.height(); - m_cursorAtlas.image = image; -} - -#ifndef QT_NO_CURSOR -void QEGLPlatformCursor::changeCursor(QCursor *cursor, QWindow *window) -{ - Q_UNUSED(window); - const QRect oldCursorRect = cursorRect(); - if (setCurrentCursor(cursor)) - update(oldCursorRect | cursorRect()); -} - -bool QEGLPlatformCursor::setCurrentCursor(QCursor *cursor) -{ - if (!m_visible) - return false; - - const Qt::CursorShape newShape = cursor ? cursor->shape() : Qt::ArrowCursor; - if (m_cursor.shape == newShape && newShape != Qt::BitmapCursor) - return false; - - if (m_cursor.shape == Qt::BitmapCursor) { - m_cursor.customCursorImage = QImage(); - m_cursor.customCursorPending = false; - } - m_cursor.shape = newShape; - if (newShape != Qt::BitmapCursor) { // standard cursor - const float ws = (float)m_cursorAtlas.cursorWidth / m_cursorAtlas.width, - hs = (float)m_cursorAtlas.cursorHeight / m_cursorAtlas.height; - m_cursor.textureRect = QRectF(ws * (m_cursor.shape % m_cursorAtlas.cursorsPerRow), - hs * (m_cursor.shape / m_cursorAtlas.cursorsPerRow), - ws, hs); - m_cursor.hotSpot = m_cursorAtlas.hotSpots[m_cursor.shape]; - m_cursor.texture = m_cursorAtlas.texture; - m_cursor.size = QSize(m_cursorAtlas.cursorWidth, m_cursorAtlas.cursorHeight); - } else { - QImage image = cursor->pixmap().toImage(); - m_cursor.textureRect = QRectF(0, 0, 1, 1); - m_cursor.hotSpot = cursor->hotSpot(); - m_cursor.texture = 0; // will get updated in the next render() - m_cursor.size = image.size(); - m_cursor.customCursorImage = image; - m_cursor.customCursorPending = true; - } - - return true; -} -#endif - -class CursorUpdateEvent : public QEvent -{ -public: - CursorUpdateEvent(const QPoint &pos, const QRegion &rgn) - : QEvent(QEvent::Type(QEvent::User + 1)), - m_pos(pos), - m_region(rgn) - { } - QPoint pos() const { return m_pos; } - QRegion region() const { return m_region; } - -private: - QPoint m_pos; - QRegion m_region; -}; - -bool QEGLPlatformCursor::event(QEvent *e) -{ - if (e->type() == QEvent::User + 1) { - CursorUpdateEvent *ev = static_cast<CursorUpdateEvent *>(e); - m_updateRequested = false; - QWindowSystemInterface::handleExposeEvent(m_screen->topLevelAt(ev->pos()), ev->region()); - QWindowSystemInterface::flushWindowSystemEvents(QEventLoop::ExcludeUserInputEvents); - return true; - } - return QPlatformCursor::event(e); -} - -void QEGLPlatformCursor::update(const QRegion &rgn) -{ - if (!m_updateRequested) { - // Must not flush the window system events directly from here since we are likely to - // be a called directly from QGuiApplication's processMouseEvents. Flushing events - // could cause reentering by dispatching more queued mouse events. - m_updateRequested = true; - QCoreApplication::postEvent(this, new CursorUpdateEvent(m_cursor.pos, rgn)); - } -} - -QRect QEGLPlatformCursor::cursorRect() const -{ - return QRect(m_cursor.pos - m_cursor.hotSpot, m_cursor.size); -} - -QPoint QEGLPlatformCursor::pos() const -{ - return m_cursor.pos; -} - -void QEGLPlatformCursor::setPos(const QPoint &pos) -{ - QGuiApplicationPrivate::inputDeviceManager()->setCursorPos(pos); - const QRect oldCursorRect = cursorRect(); - m_cursor.pos = pos; - update(oldCursorRect | cursorRect()); - m_screen->handleCursorMove(m_cursor.pos); -} - -void QEGLPlatformCursor::pointerEvent(const QMouseEvent &event) -{ - if (event.type() != QEvent::MouseMove) - return; - const QRect oldCursorRect = cursorRect(); - m_cursor.pos = event.screenPos().toPoint(); - update(oldCursorRect | cursorRect()); - m_screen->handleCursorMove(m_cursor.pos); -} - -void QEGLPlatformCursor::paintOnScreen() -{ - if (!m_visible) - return; - - const QRectF cr = cursorRect(); - const QRect screenRect(m_screen->geometry()); - const GLfloat x1 = 2 * (cr.left() / screenRect.width()) - 1; - const GLfloat x2 = 2 * (cr.right() / screenRect.width()) - 1; - const GLfloat y1 = 1 - (cr.top() / screenRect.height()) * 2; - const GLfloat y2 = 1 - (cr.bottom() / screenRect.height()) * 2; - QRectF r(QPointF(x1, y1), QPointF(x2, y2)); - - draw(r); -} - -void QEGLPlatformCursor::draw(const QRectF &r) -{ - if (!m_program) { - // one time initialization - initializeOpenGLFunctions(); - - createShaderPrograms(); - - if (!m_cursorAtlas.texture) { - createCursorTexture(&m_cursorAtlas.texture, m_cursorAtlas.image); - - if (m_cursor.shape != Qt::BitmapCursor) - m_cursor.texture = m_cursorAtlas.texture; - } - } - - if (m_cursor.shape == Qt::BitmapCursor && m_cursor.customCursorPending) { - // upload the custom cursor - createCursorTexture(&m_cursor.customCursorTexture, m_cursor.customCursorImage); - m_cursor.texture = m_cursor.customCursorTexture; - m_cursor.customCursorPending = false; - } - - Q_ASSERT(m_cursor.texture); - - m_program->bind(); - - const GLfloat x1 = r.left(); - const GLfloat x2 = r.right(); - const GLfloat y1 = r.top(); - const GLfloat y2 = r.bottom(); - const GLfloat cursorCoordinates[] = { - x1, y2, - x2, y2, - x1, y1, - x2, y1 - }; - - const GLfloat s1 = m_cursor.textureRect.left(); - const GLfloat s2 = m_cursor.textureRect.right(); - const GLfloat t1 = m_cursor.textureRect.top(); - const GLfloat t2 = m_cursor.textureRect.bottom(); - const GLfloat textureCoordinates[] = { - s1, t2, - s2, t2, - s1, t1, - s2, t1 - }; - - glActiveTexture(GL_TEXTURE0); - glBindTexture(GL_TEXTURE_2D, m_cursor.texture); - glBindBuffer(GL_ARRAY_BUFFER, 0); - - m_program->enableAttributeArray(m_vertexCoordEntry); - m_program->enableAttributeArray(m_textureCoordEntry); - - m_program->setAttributeArray(m_vertexCoordEntry, cursorCoordinates, 2); - m_program->setAttributeArray(m_textureCoordEntry, textureCoordinates, 2); - - m_program->setUniformValue(m_textureEntry, 0); - - glDisable(GL_CULL_FACE); - glFrontFace(GL_CCW); - glEnable(GL_BLEND); - glBlendFunc(GL_ONE, GL_ONE_MINUS_SRC_ALPHA); - glDisable(GL_DEPTH_TEST); // disable depth testing to make sure cursor is always on top - glDrawArrays(GL_TRIANGLE_STRIP, 0, 4); - glDisable(GL_BLEND); - - glBindTexture(GL_TEXTURE_2D, 0); - m_program->disableAttributeArray(m_textureCoordEntry); - m_program->disableAttributeArray(m_vertexCoordEntry); - - m_program->release(); -} - -QT_END_NAMESPACE |