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#ifndef QWIDGETBACKINGSTORE_P_H
#define QWIDGETBACKINGSTORE_P_H
//
// W A R N I N G
// -------------
//
// This file is not part of the Qt API. It exists purely as an
// implementation detail. This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.
//
#include <QtWidgets/private/qtwidgetsglobal_p.h>
#include <QDebug>
#include <QtWidgets/qwidget.h>
#include <private/qwidget_p.h>
#include <QtGui/qbackingstore.h>
QT_BEGIN_NAMESPACE
class QPlatformTextureList;
class QPlatformTextureListWatcher;
class QWidgetBackingStore;
struct BeginPaintInfo {
inline BeginPaintInfo() : wasFlushed(0), nothingToPaint(0), backingStoreRecreated(0) {}
uint wasFlushed : 1;
uint nothingToPaint : 1;
uint backingStoreRecreated : 1;
};
#ifndef QT_NO_OPENGL
class QPlatformTextureListWatcher : public QObject
{
Q_OBJECT
public:
QPlatformTextureListWatcher(QWidgetBackingStore *backingStore);
void watch(QPlatformTextureList *textureList);
bool isLocked() const;
private slots:
void onLockStatusChanged(bool locked);
private:
QHash<QPlatformTextureList *, bool> m_locked;
QWidgetBackingStore *m_backingStore;
};
#endif
class Q_AUTOTEST_EXPORT QWidgetBackingStore
{
public:
enum UpdateTime {
UpdateNow,
UpdateLater
};
enum BufferState{
BufferValid,
BufferInvalid
};
QWidgetBackingStore(QWidget *t);
~QWidgetBackingStore();
static void showYellowThing(QWidget *widget, const QRegion &rgn, int msec, bool);
void sync(QWidget *exposedWidget, const QRegion &exposedRegion);
void sync();
void flush(QWidget *widget = 0);
inline QPoint topLevelOffset() const { return tlwOffset; }
QBackingStore *backingStore() const { return store; }
inline bool isDirty() const
{
return !(dirtyWidgets.isEmpty() && dirty.isEmpty() && dirtyRenderToTextureWidgets.isEmpty());
}
// ### Qt 4.6: Merge into a template function (after MSVC isn't supported anymore).
void markDirty(const QRegion &rgn, QWidget *widget, UpdateTime updateTime = UpdateLater,
BufferState bufferState = BufferValid);
void markDirty(const QRect &rect, QWidget *widget, UpdateTime updateTime = UpdateLater,
BufferState bufferState = BufferValid);
private:
QWidget *tlw;
QRegion dirtyOnScreen; // needsFlush
QRegion dirty; // needsRepaint
QRegion dirtyFromPreviousSync;
QVector<QWidget *> dirtyWidgets;
QVector<QWidget *> dirtyRenderToTextureWidgets;
QVector<QWidget *> *dirtyOnScreenWidgets;
QList<QWidget *> staticWidgets;
QBackingStore *store;
uint updateRequestSent : 1;
QPoint tlwOffset;
QPlatformTextureListWatcher *textureListWatcher;
QElapsedTimer perfTime;
int perfFrames;
void sendUpdateRequest(QWidget *widget, UpdateTime updateTime);
static bool flushPaint(QWidget *widget, const QRegion &rgn);
static void unflushPaint(QWidget *widget, const QRegion &rgn);
static void qt_flush(QWidget *widget, const QRegion ®ion, QBackingStore *backingStore,
QWidget *tlw, const QPoint &tlwOffset,
QPlatformTextureList *widgetTextures,
QWidgetBackingStore *widgetBackingStore);
void doSync();
bool bltRect(const QRect &rect, int dx, int dy, QWidget *widget);
void releaseBuffer();
void beginPaint(QRegion &toClean, QWidget *widget, QBackingStore *backingStore,
BeginPaintInfo *returnInfo, bool toCleanIsInTopLevelCoordinates = true);
void endPaint(const QRegion &cleaned, QBackingStore *backingStore, BeginPaintInfo *beginPaintInfo);
QRegion dirtyRegion(QWidget *widget = 0) const;
QRegion staticContents(QWidget *widget = 0, const QRect &withinClipRect = QRect()) const;
void markDirtyOnScreen(const QRegion &dirtyOnScreen, QWidget *widget, const QPoint &topLevelOffset);
void removeDirtyWidget(QWidget *w);
void updateLists(QWidget *widget);
bool syncAllowed();
inline void addDirtyWidget(QWidget *widget, const QRegion &rgn)
{
if (widget && !widget->d_func()->inDirtyList && !widget->data->in_destructor) {
QWidgetPrivate *widgetPrivate = widget->d_func();
#if QT_CONFIG(graphicseffect)
if (widgetPrivate->graphicsEffect)
widgetPrivate->dirty = widgetPrivate->effectiveRectFor(rgn.boundingRect());
else
#endif // QT_CONFIG(graphicseffect)
widgetPrivate->dirty = rgn;
dirtyWidgets.append(widget);
widgetPrivate->inDirtyList = true;
}
}
inline void addDirtyRenderToTextureWidget(QWidget *widget)
{
if (widget && !widget->d_func()->inDirtyList && !widget->data->in_destructor) {
QWidgetPrivate *widgetPrivate = widget->d_func();
Q_ASSERT(widgetPrivate->renderToTexture);
dirtyRenderToTextureWidgets.append(widget);
widgetPrivate->inDirtyList = true;
}
}
inline void dirtyWidgetsRemoveAll(QWidget *widget)
{
int i = 0;
while (i < dirtyWidgets.size()) {
if (dirtyWidgets.at(i) == widget)
dirtyWidgets.remove(i);
else
++i;
}
}
inline void addStaticWidget(QWidget *widget)
{
if (!widget)
return;
Q_ASSERT(widget->testAttribute(Qt::WA_StaticContents));
if (!staticWidgets.contains(widget))
staticWidgets.append(widget);
}
inline void removeStaticWidget(QWidget *widget)
{ staticWidgets.removeAll(widget); }
// Move the reparented widget and all its static children from this backing store
// to the new backing store if reparented into another top-level / backing store.
inline void moveStaticWidgets(QWidget *reparented)
{
Q_ASSERT(reparented);
QWidgetBackingStore *newBs = reparented->d_func()->maybeBackingStore();
if (newBs == this)
return;
int i = 0;
while (i < staticWidgets.size()) {
QWidget *w = staticWidgets.at(i);
if (reparented == w || reparented->isAncestorOf(w)) {
staticWidgets.removeAt(i);
if (newBs)
newBs->addStaticWidget(w);
} else {
++i;
}
}
}
inline QRect topLevelRect() const
{
return tlw->data->crect;
}
inline void appendDirtyOnScreenWidget(QWidget *widget)
{
if (!widget)
return;
if (!dirtyOnScreenWidgets) {
dirtyOnScreenWidgets = new QVector<QWidget *>;
dirtyOnScreenWidgets->append(widget);
} else if (!dirtyOnScreenWidgets->contains(widget)) {
dirtyOnScreenWidgets->append(widget);
}
}
inline void dirtyOnScreenWidgetsRemoveAll(QWidget *widget)
{
if (!widget || !dirtyOnScreenWidgets)
return;
int i = 0;
while (i < dirtyOnScreenWidgets->size()) {
if (dirtyOnScreenWidgets->at(i) == widget)
dirtyOnScreenWidgets->remove(i);
else
++i;
}
}
inline void resetWidget(QWidget *widget)
{
if (widget) {
widget->d_func()->inDirtyList = false;
widget->d_func()->isScrolled = false;
widget->d_func()->isMoved = false;
widget->d_func()->dirty = QRegion();
}
}
inline void updateStaticContentsSize()
{
for (int i = 0; i < staticWidgets.size(); ++i) {
QWidgetPrivate *wd = staticWidgets.at(i)->d_func();
if (!wd->extra)
wd->createExtra();
wd->extra->staticContentsSize = wd->data.crect.size();
}
}
inline bool hasStaticContents() const
{
#if defined(Q_OS_WIN)
return !staticWidgets.isEmpty();
#else
return !staticWidgets.isEmpty() && false;
#endif
}
friend QRegion qt_dirtyRegion(QWidget *);
friend class QWidgetPrivate;
friend class QWidget;
friend class QBackingStore;
Q_DISABLE_COPY(QWidgetBackingStore)
};
QT_END_NAMESPACE
#endif // QBACKINGSTORE_P_H