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|
/****************************************************************************
**
** Copyright (C) 2011 - 2012 Research In Motion
**
** Contact: Research In Motion <blackberry-qt@qnx.com>
** Contact: Klarälvdalens Datakonsult AB <info@kdab.com>
**
** This file is part of the QtCore module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** GNU Lesser General Public License Usage
** This file may be used under the terms of the GNU Lesser General Public
** License version 2.1 as published by the Free Software Foundation and
** appearing in the file LICENSE.LGPL included in the packaging of this
** file. Please review the following information to ensure the GNU Lesser
** General Public License version 2.1 requirements will be met:
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain additional
** rights. These rights are described in the Nokia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU General
** Public License version 3.0 as published by the Free Software Foundation
** and appearing in the file LICENSE.GPL included in the packaging of this
** file. Please review the following information to ensure the GNU General
** Public License version 3.0 requirements will be met:
** http://www.gnu.org/copyleft/gpl.html.
**
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
// #define QBBWINDOW_DEBUG
#include "qbbwindow.h"
#include "qbbglcontext.h"
#include "qbbscreen.h"
#include <QtGui/QWidget>
#include <QDebug>
#include <QtGui/QPlatformWindowFormat>
#include <QtGui/QWindowSystemInterface>
#include <errno.h>
QT_BEGIN_NAMESPACE
QBBWindow::QBBWindow(QWidget *window, screen_context_t context, QBBScreen *screen)
: QPlatformWindow(window),
mContext(context),
mCurrentBufferIndex(-1),
mPreviousBufferIndex(-1),
mPlatformGlContext(NULL),
mScreen(NULL),
mParent(NULL),
mVisible(true)
{
#if defined(QBBWINDOW_DEBUG)
qDebug() << "QBBWindow::QBBWindow - w=" << window << ", s=" << window->size();
#endif
int result;
// create child QNX window
errno = 0;
result = screen_create_window_type(&mWindow, mContext, SCREEN_CHILD_WINDOW);
if (result != 0) {
qFatal("QBBWindow: failed to create window, errno=%d", errno);
}
// set window buffer usage based on rendering API
int val;
QPlatformWindowFormat format = widget()->platformWindowFormat();
switch (format.windowApi()) {
case QPlatformWindowFormat::Raster:
val = SCREEN_USAGE_NATIVE | SCREEN_USAGE_READ | SCREEN_USAGE_WRITE;
break;
case QPlatformWindowFormat::OpenGL:
val = SCREEN_USAGE_OPENGL_ES2;
break;
default:
qFatal("QBBWindow: unsupported window API");
break;
}
errno = 0;
result = screen_set_window_property_iv(mWindow, SCREEN_PROPERTY_USAGE, &val);
if (result != 0) {
qFatal("QBBWindow: failed to set window buffer usage, errno=%d", errno);
}
// alpha channel is always pre-multiplied if present
errno = 0;
val = SCREEN_PRE_MULTIPLIED_ALPHA;
result = screen_set_window_property_iv(mWindow, SCREEN_PROPERTY_ALPHA_MODE, &val);
if (result != 0) {
qFatal("QBBWindow: failed to set window alpha mode, errno=%d", errno);
}
// make the window opaque
errno = 0;
val = SCREEN_TRANSPARENCY_NONE;
result = screen_set_window_property_iv(mWindow, SCREEN_PROPERTY_TRANSPARENCY, &val);
if (result != 0) {
qFatal("QBBWindow: failed to set window transparency, errno=%d", errno);
}
// set the window swap interval
errno = 0;
val = 1;
result = screen_set_window_property_iv(mWindow, SCREEN_PROPERTY_SWAP_INTERVAL, &val);
if (result != 0) {
qFatal("QBBWindow: failed to set window swap interval, errno=%d", errno);
}
// Set the screen to the primary display (this is the default specified by screen).
setScreen(screen);
// Qt somtimes doesn't call these setters after creating the window, so we need to do that
// ourselves here
if (window->parentWidget())
setParent(window->parentWidget()->platformWindow());
setGeometry(window->geometry());
setVisible(window->isVisible());
}
QBBWindow::~QBBWindow()
{
#if defined(QBBWINDOW_DEBUG)
qDebug() << "QBBWindow::~QBBWindow - w=" << widget();
#endif
// Remove from parent's Hierarchy.
removeFromParent();
mScreen->updateHierarchy();
// We shouldn't allow this case unless QT allows it. Does it? Or should we send the
// handleCloseEvent on all children when this window is deleted?
if (mChildren.size() > 0)
qFatal("QBBWindow: window destroyed before children!");
// cleanup OpenGL/OpenVG context if it exists
if (mPlatformGlContext != NULL) {
delete mPlatformGlContext;
}
// cleanup QNX window and its buffers
screen_destroy_window(mWindow);
}
void QBBWindow::setGeometry(const QRect &rect)
{
int val[2];
#if defined(QBBWINDOW_DEBUG)
qDebug() << "QBBWindow::setGeometry - w=" << widget() << ", (" << rect.x() << "," << rect.y() << "," << rect.width() << "," << rect.height() << ")";
#endif
QRect oldGeometry = geometry();
// call parent method
QPlatformWindow::setGeometry(rect);
// set window geometry equal to widget geometry
errno = 0;
val[0] = rect.x();
val[1] = rect.y();
int result = screen_set_window_property_iv(mWindow, SCREEN_PROPERTY_POSITION, val);
if (result != 0) {
qFatal("QBBWindow: failed to set window position, errno=%d", errno);
}
errno = 0;
val[0] = rect.width();
val[1] = rect.height();
result = screen_set_window_property_iv(mWindow, SCREEN_PROPERTY_SIZE, val);
if (result != 0) {
qFatal("QBBWindow: failed to set window size, errno=%d", errno);
}
// set viewport size equal to window size
errno = 0;
result = screen_set_window_property_iv(mWindow, SCREEN_PROPERTY_SOURCE_SIZE, val);
if (result != 0) {
qFatal("QBBWindow: failed to set window source size, errno=%d", errno);
}
// Now move all children.
QPoint offset;
if (!oldGeometry.isEmpty()) {
offset = rect.topLeft();
offset -= oldGeometry.topLeft();
QList<QBBWindow*>::iterator it;
for (it = mChildren.begin(); it != mChildren.end(); it++) {
(*it)->offset(offset);
}
}
}
void QBBWindow::offset(const QPoint &offset)
{
// Move self and then children.
QRect newGeometry = geometry();
newGeometry.translate(offset);
// call the base class
QPlatformWindow::setGeometry(newGeometry);
int val[2];
errno = 0;
val[0] = newGeometry.x();
val[1] = newGeometry.y();
int result = screen_set_window_property_iv(mWindow, SCREEN_PROPERTY_POSITION, val);
if (result != 0) {
qFatal("QBBWindow: failed to set window position, errno=%d", errno);
}
QList<QBBWindow*>::iterator it;
for (it = mChildren.begin(); it != mChildren.end(); it++) {
(*it)->offset(offset);
}
}
void QBBWindow::setVisible(bool visible)
{
#if defined(QBBWINDOW_DEBUG)
qDebug() << "QBBWindow::setVisible - w=" << widget() << ", v=" << visible;
#endif
mVisible = visible;
QBBWindow* root = this;
while (root->mParent)
root = root->mParent;
root->updateVisibility(root->mVisible);
widget()->activateWindow();
}
void QBBWindow::updateVisibility(bool parentVisible)
{
// set window visibility
errno = 0;
int val = (mVisible && parentVisible) ? 1 : 0;
int result = screen_set_window_property_iv(mWindow, SCREEN_PROPERTY_VISIBLE, &val);
if (result != 0) {
qFatal("QBBWindow: failed to set window visibility, errno=%d", errno);
}
QList<QBBWindow*>::iterator it;
for (it = mChildren.begin(); it != mChildren.end(); it++) {
(*it)->updateVisibility(mVisible && parentVisible);
}
}
void QBBWindow::setOpacity(qreal level)
{
#if defined(QBBWINDOW_DEBUG)
qDebug() << "QBBWindow::setOpacity - w=" << widget() << ", o=" << level;
#endif
// set window global alpha
errno = 0;
int val = (int)(level * 255);
int result = screen_set_window_property_iv(mWindow, SCREEN_PROPERTY_GLOBAL_ALPHA, &val);
if (result != 0) {
qFatal("QBBWindow: failed to set window global alpha, errno=%d", errno);
}
// TODO: How to handle children of this window? If we change all the visibilities, then
// the transparency will look wrong...
}
void QBBWindow::setBufferSize(const QSize &size)
{
#if defined(QBBWINDOW_DEBUG)
qDebug() << "QBBWindow::setBufferSize - w=" << widget() << ", s=" << size;
#endif
// set window buffer size
errno = 0;
int val[2] = { size.width(), size.height() };
int result = screen_set_window_property_iv(mWindow, SCREEN_PROPERTY_BUFFER_SIZE, val);
if (result != 0) {
qFatal("QBBWindow: failed to set window buffer size, errno=%d", errno);
}
// create window buffers if they do not exist
if (!hasBuffers()) {
#if defined(QBBWINDOW_DEBUG)
qDebug() << "QBBWindow::setBufferSize - create buffers";
#endif
// get pixel format from EGL config if using OpenGL;
// otherwise inherit pixel format of window's screen
if (mPlatformGlContext != NULL) {
val[0] = platformWindowFormatToNativeFormat(mPlatformGlContext->platformWindowFormat());
} else {
val[0] = mScreen->nativeFormat();
}
errno = 0;
result = screen_set_window_property_iv(mWindow, SCREEN_PROPERTY_FORMAT, val);
if (result != 0) {
qFatal("QBBWindow: failed to set window pixel format, errno=%d", errno);
}
errno = 0;
result = screen_create_window_buffers(mWindow, MAX_BUFFER_COUNT);
if (result != 0) {
qFatal("QBBWindow: failed to create window buffers, errno=%d", errno);
}
}
// cache new buffer size
mBufferSize = size;
// buffers were destroyed; reacquire them
mCurrentBufferIndex = -1;
mPreviousDirty = QRegion();
mScrolled = QRegion();
}
QBBBuffer &QBBWindow::renderBuffer()
{
#if defined(QBBWINDOW_DEBUG)
qDebug() << "QBBWindow::renderBuffer - w=" << widget();
#endif
// check if render buffer is invalid
if (mCurrentBufferIndex == -1) {
// get all buffers available for rendering
errno = 0;
screen_buffer_t buffers[MAX_BUFFER_COUNT];
int result = screen_get_window_property_pv(mWindow, SCREEN_PROPERTY_RENDER_BUFFERS, (void **)buffers);
if (result != 0) {
qFatal("QBBWindow: failed to query window buffers, errno=%d", errno);
}
// wrap each buffer
for (int i = 0; i < MAX_BUFFER_COUNT; i++) {
mBuffers[i] = QBBBuffer(buffers[i]);
}
// use the first available render buffer
mCurrentBufferIndex = 0;
mPreviousBufferIndex = -1;
}
return mBuffers[mCurrentBufferIndex];
}
void QBBWindow::scroll(const QRegion ®ion, int dx, int dy, bool flush)
{
copyBack(region, dx, dy, flush);
mScrolled += region;
}
void QBBWindow::post(const QRegion &dirty)
{
// check if render buffer exists and something was rendered
if (mCurrentBufferIndex != -1 && !dirty.isEmpty()) {
#if defined(QBBWINDOW_DEBUG)
qDebug() << "QBBWindow::post - w=" << widget();
#endif
QBBBuffer ¤tBuffer = mBuffers[mCurrentBufferIndex];
// copy unmodified region from old render buffer to new render buffer;
// required to allow partial updates
QRegion preserve = mPreviousDirty - dirty - mScrolled;
copyBack(preserve, 0, 0);
// calculate region that changed
QRegion modified = preserve + dirty + mScrolled;
QRect rect = modified.boundingRect();
int dirtyRect[4] = { rect.x(), rect.y(), rect.x() + rect.width(), rect.y() + rect.height() };
// update the display with contents of render buffer
errno = 0;
int result = screen_post_window(mWindow, currentBuffer.nativeBuffer(), 1, dirtyRect, 0);
if (result != 0) {
qFatal("QBBWindow: failed to post window buffer, errno=%d", errno);
}
// advance to next nender buffer
mPreviousBufferIndex = mCurrentBufferIndex++;
if (mCurrentBufferIndex >= MAX_BUFFER_COUNT) {
mCurrentBufferIndex = 0;
}
// save modified region and clear scrolled region
mPreviousDirty = dirty;
mScrolled = QRegion();
// notify screen that window posted
if (mScreen != NULL) {
mScreen->onWindowPost(this);
}
}
}
QPlatformGLContext *QBBWindow::glContext() const
{
#if defined(QBBWINDOW_DEBUG)
qDebug() << "QBBWindow::glContext - w=" << widget();
#endif
// create opengl context on first access if rendering API is correct
QPlatformWindowFormat format = widget()->platformWindowFormat();
if (mPlatformGlContext == NULL && format.windowApi() == QPlatformWindowFormat::OpenGL) {
mPlatformGlContext = new QBBGLContext( const_cast<QBBWindow*>(this) );
}
return mPlatformGlContext;
}
void QBBWindow::setScreen(QBBScreen *platformScreen)
{
#if defined(QBBWINDOW_DEBUG)
qDebug() << "QBBWindow::setScreen - w=" << widget();
#endif
if (mScreen == platformScreen)
return;
if (mScreen)
mScreen->removeWindow(this);
platformScreen->addWindow(this);
mScreen = platformScreen;
// The display may not have a root (desktop) window yet so we must ensure that one has been
// created before we can join its group or get its native display property.
mScreen->ensureDisplayCreated();
// move window to proper display
errno = 0;
screen_display_t display = platformScreen->nativeDisplay();
int result = screen_set_window_property_pv(mWindow, SCREEN_PROPERTY_DISPLAY, (void **)&display);
if (result != 0) {
qFatal("QBBWindow: failed to set window display, errno=%d", errno);
}
// add window to display's window group
errno = 0;
result = screen_join_window_group(mWindow, platformScreen->windowGroupName());
if (result != 0) {
qFatal("QBBWindow: failed to join window group, errno=%d", errno);
}
QList<QBBWindow*>::iterator it;
for (it = mChildren.begin(); it != mChildren.end(); it++) {
// Only subwindows and tooltips need necessarily be moved to another display with
// the window.
if ((widget()->windowType() & Qt::WindowType_Mask) == Qt::SubWindow ||
(widget()->windowType() & Qt::WindowType_Mask) == Qt::ToolTip)
(*it)->setScreen(platformScreen);
}
mScreen->updateHierarchy();
}
void QBBWindow::removeFromParent()
{
// Remove from old Hierarchy position
if (mParent) {
if (mParent->mChildren.removeAll(this))
mParent = 0;
else
qFatal("QBBWindow: Window Hierarchy broken; window has parent, but parent hasn't got child.");
} else {
mScreen->removeWindow(this);
}
}
void QBBWindow::setParent(const QPlatformWindow *window)
{
#if defined(QBBWINDOW_DEBUG)
qDebug() << "QBBWindow::setParent - w=" << widget() << " p=" << window;
#endif
// Cast away the const, we need to modify the Hierarchy.
QBBWindow* newParent = 0;
if (window)
newParent = static_cast<QBBWindow*>((QPlatformWindow *)window);
if (newParent == mParent)
return;
removeFromParent();
mParent = newParent;
// Add to new Hierarchy position.
if (mParent) {
if (mParent->mScreen != mScreen)
setScreen(mParent->mScreen);
mParent->mChildren.push_back(this);
} else {
mScreen->addWindow(this);
}
mScreen->updateHierarchy();
}
void QBBWindow::raise()
{
#if defined(QBBWINDOW_DEBUG)
qDebug() << "QBBWindow::raise - w=" << widget();
#endif
QBBWindow* oldParent = mParent;
if (oldParent) {
removeFromParent();
oldParent->mChildren.push_back(this);
} else {
mScreen->raiseWindow(this);
}
mScreen->updateHierarchy();
}
void QBBWindow::lower()
{
#if defined(QBBWINDOW_DEBUG)
qDebug() << "QBBWindow::lower - w=" << widget();
#endif
QBBWindow* oldParent = mParent;
if (oldParent) {
removeFromParent();
oldParent->mChildren.push_front(this);
} else {
mScreen->lowerWindow(this);
}
mScreen->updateHierarchy();
}
void QBBWindow::requestActivateWindow()
{
#if defined(QBBWINDOW_DEBUG)
qDebug() << "QBBWindow::requestActivateWindow - w=" << widget();
#endif
// TODO: Tell screen to set keyboard focus to this window.
// Notify that we gained focus.
gainedFocus();
}
void QBBWindow::gainedFocus()
{
#if defined(QBBWINDOW_DEBUG)
qDebug() << "QBBWindow::gainedFocus - w=" << widget();
#endif
// Got focus
QWindowSystemInterface::handleWindowActivated(widget());
}
QBBWindow *QBBWindow::findWindow(screen_window_t windowHandle)
{
if (mWindow == windowHandle)
return this;
Q_FOREACH (QBBWindow *window, mChildren) {
QBBWindow * const result = window->findWindow(windowHandle);
if (result)
return result;
}
return 0;
}
void QBBWindow::updateZorder(int &topZorder)
{
errno = 0;
int result = screen_set_window_property_iv(mWindow, SCREEN_PROPERTY_ZORDER, &topZorder);
topZorder++;
if (result != 0)
qFatal("QBBWindow: failed to set window z-order=%d, errno=%d, mWindow=0x%08x", topZorder, errno, mWindow);
QList<QBBWindow*>::const_iterator it;
for (it = mChildren.begin(); it != mChildren.end(); it++)
(*it)->updateZorder(topZorder);
}
void QBBWindow::copyBack(const QRegion ®ion, int dx, int dy, bool flush)
{
int result;
// abort if previous buffer is invalid
if (mPreviousBufferIndex == -1) {
return;
}
// abort if nothing to copy
if (region.isEmpty()) {
return;
}
QBBBuffer ¤tBuffer = mBuffers[mCurrentBufferIndex];
QBBBuffer &previousBuffer = mBuffers[mPreviousBufferIndex];
// break down region into non-overlapping rectangles
QVector<QRect> rects = region.rects();
for (int i = rects.size() - 1; i >= 0; i--) {
// clip rectangle to bounds of target
QRect rect = rects[i].intersected( currentBuffer.rect() );
if (rect.isEmpty())
continue;
// setup blit operation
int attribs[] = { SCREEN_BLIT_SOURCE_X, rect.x(),
SCREEN_BLIT_SOURCE_Y, rect.y(),
SCREEN_BLIT_SOURCE_WIDTH, rect.width(),
SCREEN_BLIT_SOURCE_HEIGHT, rect.height(),
SCREEN_BLIT_DESTINATION_X, rect.x() + dx,
SCREEN_BLIT_DESTINATION_Y, rect.y() + dy,
SCREEN_BLIT_DESTINATION_WIDTH, rect.width(),
SCREEN_BLIT_DESTINATION_HEIGHT, rect.height(),
SCREEN_BLIT_END };
// queue blit operation
errno = 0;
result = screen_blit(mContext, currentBuffer.nativeBuffer(), previousBuffer.nativeBuffer(), attribs);
if (result != 0) {
qFatal("QBBWindow: failed to blit buffers, errno=%d", errno);
}
}
// check if flush requested
if (flush) {
// wait for all blits to complete
errno = 0;
result = screen_flush_blits(mContext, SCREEN_WAIT_IDLE);
if (result != 0) {
qFatal("QBBWindow: failed to flush blits, errno=%d", errno);
}
// buffer was modified outside the CPU
currentBuffer.invalidateInCache();
}
}
int QBBWindow::platformWindowFormatToNativeFormat(const QPlatformWindowFormat &format)
{
// extract size of colour channels from window format
int redSize = format.redBufferSize();
if (redSize == -1) {
qFatal("QBBWindow: red size not defined");
}
int greenSize = format.greenBufferSize();
if (greenSize == -1) {
qFatal("QBBWindow: green size not defined");
}
int blueSize = format.blueBufferSize();
if (blueSize == -1) {
qFatal("QBBWindow: blue size not defined");
}
// select matching native format
if (redSize == 5 && greenSize == 6 && blueSize == 5) {
return SCREEN_FORMAT_RGB565;
} else if (redSize == 8 && greenSize == 8 && blueSize == 8) {
return SCREEN_FORMAT_RGBA8888;
} else {
qFatal("QBBWindow: unsupported pixel format");
return 0;
}
}
QT_END_NAMESPACE
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