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OpenSceneGraph/include/osgQt/QGraphicsViewAdapter

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Moved QWebViewImage and QGraphicsViewAdapter into new osgQt utility library.
2010-03-04 20:15:35 +08:00
/* -*-c++-*- OpenSceneGraph - Copyright (C) 1998-2009 Robert Osfield
*
* This library is open source and may be redistributed and/or modified under
* the terms of the OpenSceneGraph Public License (OSGPL) version 0.0 or
* (at your option) any later version. The full license is in LICENSE file
* included with this distribution, and on the openscenegraph.org website.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* OpenSceneGraph Public License for more details.
*/
#ifndef QGRAPHICSVIEWADAPTER
#define QGRAPHICSVIEWADAPTER
#include <osg/Image>
#include <osg/observer_ptr>
#include <osgQt/Export>
Removed unneccessary QWebKit includes
2010-06-01 19:23:04 +08:00
#include <QtCore/QPointer>
Moved QWebViewImage and QGraphicsViewAdapter into new osgQt utility library.
2010-03-04 20:15:35 +08:00
#include <QtGui/QGraphicsScene>
#include <QtGui/QGraphicsView>
#include <QtGui/QApplication>
#include <QtGui/QPainter>
#include <QtGui/QtEvents>
namespace osgQt
{
extern OSGQT_EXPORT QCoreApplication* getOrCreateQApplication();
class OSGQT_EXPORT QGraphicsViewAdapter : public QObject
{
Q_OBJECT
public:
QGraphicsViewAdapter(osg::Image* image, QWidget* widget);
void setUpKeyMap();
bool sendPointerEvent(int x, int y, int buttonMask);
bool sendKeyEvent(int key, bool keyDown);
void setFrameLastRendered(const osg::FrameStamp* frameStamp);
void clearWriteBuffer();
void render();
void assignImage(unsigned int i);
From Jean-Sebastien Guay, "I've been working in the last few days to get QWidgetImage to a point where it can fill a need we have: to be able to use Qt to make HUDs and to display widgets over / inside an OSG scene. --------------- Current results --------------- I've attached what I have at this point. The modified QWidgetImage + QGraphicsViewAdapter classes can be rendered fullscreen (i.e. the Qt QGraphicsView's size follows the size of the OSG window) or on a quad in the scene as before. It will let events go through to OSG if no widget is under the mouse when they happen (useful when used as a HUD with transparent parts - a click-focus scheme could be added later too). It also supercedes Martin Scheffler's submission because it adds a getter/setter for the QGraphicsViewAdapter's background color (and the user can set their widget to be transparent using widget->setAttribute(Qt::WA_TranslucentBackground) themselves). The included osgQtBrowser example has been modified to serve as a test bed for these changes. It has lots more command line arguments than before, some of which can be removed eventually (once things are tested). Note that it may be interesting to change its name or split it into two examples. Though if things go well, the specific QWebViewImage class can be removed completely and we can consolidate to using QWidgetImage everywhere, and then a single example to demonstrate it would make more sense, albeit not named osgQtBrowser... You can try this path by using the --useWidgetImage --useBrowser command line arguments - this results in an equivalent setup to QWebViewImage, but using QWidgetImage, and doesn't work completely yet for some unknown reason, see below. ---------------- Remaining issues ---------------- There are a few issues left to fix, and for these I request the community's assistance. They are not blockers for me, and with my limited Qt experience I don't feel like I'm getting any closer to fixing them, so if someone else could pitch in and see what they can find, it would be appreciated. It would be really nice to get them fixed, that way we'd really have a first-class integration of Qt widgets in an OSG scene. The issues are noted in the osgQtBrowser.cpp source file, but here they are too: ------------------------------------------------------------------- QWidgetImage still has some issues, some examples are: 1. Editing in the QTextEdit doesn't work. Also when started with --useBrowser, editing in the search field on YouTube doesn't work. But that same search field when using QWebViewImage works... And editing in the text field in the pop-up getInteger dialog works too. All these cases use QGraphicsViewAdapter under the hood, so why do some work and others don't? a) osgQtBrowser --useWidgetImage [--fullscreen] (optional) b) Try to click in the QTextEdit and type, or to select text and drag-and-drop it somewhere else in the QTextEdit. These don't work. c) osgQtBrowser --useWidgetImage --sanityCheck d) Try the operations in b), they all work. e) osgQtBrowser --useWidgetImage --useBrowser [--fullscreen] f) Try to click in the search field and type, it doesn't work. g) osgQtBrowser h) Try the operation in f), it works. 2. Operations on floating windows (--numFloatingWindows 1 or more). Moving by dragging the titlebar, clicking the close button, resizing them, none of these work. I wonder if it's because the OS manages those functions (they're functions of the window decorations) so we need to do something special for that? But in --sanityCheck mode they work. a) osgQtBrowser --useWidgetImage --numFloatingWindows 1 [--fullscreen] b) Try to drag the floating window, click the close button, or drag its sides to resize it. None of these work. c) osgQtBrowser --useWidgetImage --numFloatingWindows 1 --sanityCheck d) Try the operations in b), all they work. e) osgQtBrowser --useWidgetImage [--fullscreen] f) Click the button so that the getInteger() dialog is displayed, then try to move that dialog or close it with the close button, these don't work. g) osgQtBrowser --useWidgetImage --sanityCheck h) Try the operation in f), it works. 3. (Minor) The QGraphicsView's scrollbars don't appear when using QWidgetImage or QWebViewImage. QGraphicsView is a QAbstractScrollArea and it should display scrollbars as soon as the scene is too large to fit the view. a) osgQtBrowser --useWidgetImage --fullscreen b) Resize the OSG window so it's smaller than the QTextEdit. Scrollbars should appear but don't. c) osgQtBrowser --useWidgetImage --sanityCheck d) Try the operation in b), scrollbars appear. Even if you have floating windows (by clicking the button or by adding --numFloatingWindows 1) and move them outside the view, scrollbars appear too. You can't test that case in OSG for now because of problem 2 above, but that's pretty cool. 4. (Minor) In sanity check mode, the widget added to the QGraphicsView is centered. With QGraphicsViewAdapter, it is not. a) osgQtBrowser --useWidgetImage [--fullscreen] b) The QTextEdit and button are not in the center of the image generated by the QGraphicsViewAdapter. c) osgQtBrowser --useWidgetImage --sanityCheck d) The QTextEdit and button are in the center of the QGraphicsView. ------------------------------------------------------------------- As you can see I've put specific repro steps there too, so it's clear what I mean by a given problem. The --sanityCheck mode is useful to see what should happen in a "normal" Qt app that demonstrates the same situation, so hopefully we can get to a point where it behaves the same with --sanityCheck and without."
2010-06-15 21:57:44 +08:00
void resize(int width, int height);
void setBackgroundColor(QColor color) { _backgroundColor = color; }
QColor getBackgroundColor() const { return _backgroundColor; }
QGraphicsView* getQGraphicsView() { return _graphicsView; }
QGraphicsScene* getQGraphicsScene() { return _graphicsScene; }
Moved QWebViewImage and QGraphicsViewAdapter into new osgQt utility library.
2010-03-04 20:15:35 +08:00
protected:
bool handlePointerEvent(int x, int y, int buttonMask);
bool handleKeyEvent(int key, bool keyDown);
From Jean-Sebastien Guay and Martin Scheffler, "First are Martin's changes: * Added support for floating windows and context menus in QMDIAreas. * Protected the size (_width and _height) by a mutex to prevent threading problems. Then my own: * Made sure the embedded widget's size follows the graphicsView's size at all times so that window resizes will resize the widget as expected in fullscreen mode."
2010-07-08 18:51:37 +08:00
QWidget* getWidgetAt(const QPoint& pos);
Moved QWebViewImage and QGraphicsViewAdapter into new osgQt utility library.
2010-03-04 20:15:35 +08:00
osg::observer_ptr<osg::Image> _image;
int _previousButtonMask;
int _previousMouseX;
int _previousMouseY;
From Jean-Sebastien Guay, "I've been working in the last few days to get QWidgetImage to a point where it can fill a need we have: to be able to use Qt to make HUDs and to display widgets over / inside an OSG scene. --------------- Current results --------------- I've attached what I have at this point. The modified QWidgetImage + QGraphicsViewAdapter classes can be rendered fullscreen (i.e. the Qt QGraphicsView's size follows the size of the OSG window) or on a quad in the scene as before. It will let events go through to OSG if no widget is under the mouse when they happen (useful when used as a HUD with transparent parts - a click-focus scheme could be added later too). It also supercedes Martin Scheffler's submission because it adds a getter/setter for the QGraphicsViewAdapter's background color (and the user can set their widget to be transparent using widget->setAttribute(Qt::WA_TranslucentBackground) themselves). The included osgQtBrowser example has been modified to serve as a test bed for these changes. It has lots more command line arguments than before, some of which can be removed eventually (once things are tested). Note that it may be interesting to change its name or split it into two examples. Though if things go well, the specific QWebViewImage class can be removed completely and we can consolidate to using QWidgetImage everywhere, and then a single example to demonstrate it would make more sense, albeit not named osgQtBrowser... You can try this path by using the --useWidgetImage --useBrowser command line arguments - this results in an equivalent setup to QWebViewImage, but using QWidgetImage, and doesn't work completely yet for some unknown reason, see below. ---------------- Remaining issues ---------------- There are a few issues left to fix, and for these I request the community's assistance. They are not blockers for me, and with my limited Qt experience I don't feel like I'm getting any closer to fixing them, so if someone else could pitch in and see what they can find, it would be appreciated. It would be really nice to get them fixed, that way we'd really have a first-class integration of Qt widgets in an OSG scene. The issues are noted in the osgQtBrowser.cpp source file, but here they are too: ------------------------------------------------------------------- QWidgetImage still has some issues, some examples are: 1. Editing in the QTextEdit doesn't work. Also when started with --useBrowser, editing in the search field on YouTube doesn't work. But that same search field when using QWebViewImage works... And editing in the text field in the pop-up getInteger dialog works too. All these cases use QGraphicsViewAdapter under the hood, so why do some work and others don't? a) osgQtBrowser --useWidgetImage [--fullscreen] (optional) b) Try to click in the QTextEdit and type, or to select text and drag-and-drop it somewhere else in the QTextEdit. These don't work. c) osgQtBrowser --useWidgetImage --sanityCheck d) Try the operations in b), they all work. e) osgQtBrowser --useWidgetImage --useBrowser [--fullscreen] f) Try to click in the search field and type, it doesn't work. g) osgQtBrowser h) Try the operation in f), it works. 2. Operations on floating windows (--numFloatingWindows 1 or more). Moving by dragging the titlebar, clicking the close button, resizing them, none of these work. I wonder if it's because the OS manages those functions (they're functions of the window decorations) so we need to do something special for that? But in --sanityCheck mode they work. a) osgQtBrowser --useWidgetImage --numFloatingWindows 1 [--fullscreen] b) Try to drag the floating window, click the close button, or drag its sides to resize it. None of these work. c) osgQtBrowser --useWidgetImage --numFloatingWindows 1 --sanityCheck d) Try the operations in b), all they work. e) osgQtBrowser --useWidgetImage [--fullscreen] f) Click the button so that the getInteger() dialog is displayed, then try to move that dialog or close it with the close button, these don't work. g) osgQtBrowser --useWidgetImage --sanityCheck h) Try the operation in f), it works. 3. (Minor) The QGraphicsView's scrollbars don't appear when using QWidgetImage or QWebViewImage. QGraphicsView is a QAbstractScrollArea and it should display scrollbars as soon as the scene is too large to fit the view. a) osgQtBrowser --useWidgetImage --fullscreen b) Resize the OSG window so it's smaller than the QTextEdit. Scrollbars should appear but don't. c) osgQtBrowser --useWidgetImage --sanityCheck d) Try the operation in b), scrollbars appear. Even if you have floating windows (by clicking the button or by adding --numFloatingWindows 1) and move them outside the view, scrollbars appear too. You can't test that case in OSG for now because of problem 2 above, but that's pretty cool. 4. (Minor) In sanity check mode, the widget added to the QGraphicsView is centered. With QGraphicsViewAdapter, it is not. a) osgQtBrowser --useWidgetImage [--fullscreen] b) The QTextEdit and button are not in the center of the image generated by the QGraphicsViewAdapter. c) osgQtBrowser --useWidgetImage --sanityCheck d) The QTextEdit and button are in the center of the QGraphicsView. ------------------------------------------------------------------- As you can see I've put specific repro steps there too, so it's clear what I mean by a given problem. The --sanityCheck mode is useful to see what should happen in a "normal" Qt app that demonstrates the same situation, so hopefully we can get to a point where it behaves the same with --sanityCheck and without."
2010-06-15 21:57:44 +08:00
int _previousQtMouseX;
int _previousQtMouseY;
bool _previousSentEvent;
int _width;
int _height;
Moved QWebViewImage and QGraphicsViewAdapter into new osgQt utility library.
2010-03-04 20:15:35 +08:00
typedef std::map<int, Qt::Key> KeyMap;
KeyMap _keyMap;
Qt::KeyboardModifiers _qtKeyModifiers;
QColor _backgroundColor;
QPointer<QGraphicsView> _graphicsView;
QPointer<QGraphicsScene> _graphicsScene;
From Jean-Sebastien Guay and Martin Scheffler, "First are Martin's changes: * Added support for floating windows and context menus in QMDIAreas. * Protected the size (_width and _height) by a mutex to prevent threading problems. Then my own: * Made sure the embedded widget's size follows the graphicsView's size at all times so that window resizes will resize the widget as expected in fullscreen mode."
2010-07-08 18:51:37 +08:00
QPointer<QWidget> _widget;
Moved QWebViewImage and QGraphicsViewAdapter into new osgQt utility library.
2010-03-04 20:15:35 +08:00
OpenThreads::Mutex _qimagesMutex;
From Jean-Sebastien Guay and Martin Scheffler, "First are Martin's changes: * Added support for floating windows and context menus in QMDIAreas. * Protected the size (_width and _height) by a mutex to prevent threading problems. Then my own: * Made sure the embedded widget's size follows the graphicsView's size at all times so that window resizes will resize the widget as expected in fullscreen mode."
2010-07-08 18:51:37 +08:00
OpenThreads::Mutex _qresizeMutex;
Moved QWebViewImage and QGraphicsViewAdapter into new osgQt utility library.
2010-03-04 20:15:35 +08:00
int _previousFrameNumber;
bool _newImageAvailable;
unsigned int _currentRead;
unsigned int _currentWrite;
unsigned int _previousWrite;
QImage _qimages[3];
virtual void customEvent ( QEvent * event ) ;
private slots:
void repaintRequestedSlot(const QList<QRectF> &regions);
From Jean-Sebastien Guay, "I've been working in the last few days to get QWidgetImage to a point where it can fill a need we have: to be able to use Qt to make HUDs and to display widgets over / inside an OSG scene. --------------- Current results --------------- I've attached what I have at this point. The modified QWidgetImage + QGraphicsViewAdapter classes can be rendered fullscreen (i.e. the Qt QGraphicsView's size follows the size of the OSG window) or on a quad in the scene as before. It will let events go through to OSG if no widget is under the mouse when they happen (useful when used as a HUD with transparent parts - a click-focus scheme could be added later too). It also supercedes Martin Scheffler's submission because it adds a getter/setter for the QGraphicsViewAdapter's background color (and the user can set their widget to be transparent using widget->setAttribute(Qt::WA_TranslucentBackground) themselves). The included osgQtBrowser example has been modified to serve as a test bed for these changes. It has lots more command line arguments than before, some of which can be removed eventually (once things are tested). Note that it may be interesting to change its name or split it into two examples. Though if things go well, the specific QWebViewImage class can be removed completely and we can consolidate to using QWidgetImage everywhere, and then a single example to demonstrate it would make more sense, albeit not named osgQtBrowser... You can try this path by using the --useWidgetImage --useBrowser command line arguments - this results in an equivalent setup to QWebViewImage, but using QWidgetImage, and doesn't work completely yet for some unknown reason, see below. ---------------- Remaining issues ---------------- There are a few issues left to fix, and for these I request the community's assistance. They are not blockers for me, and with my limited Qt experience I don't feel like I'm getting any closer to fixing them, so if someone else could pitch in and see what they can find, it would be appreciated. It would be really nice to get them fixed, that way we'd really have a first-class integration of Qt widgets in an OSG scene. The issues are noted in the osgQtBrowser.cpp source file, but here they are too: ------------------------------------------------------------------- QWidgetImage still has some issues, some examples are: 1. Editing in the QTextEdit doesn't work. Also when started with --useBrowser, editing in the search field on YouTube doesn't work. But that same search field when using QWebViewImage works... And editing in the text field in the pop-up getInteger dialog works too. All these cases use QGraphicsViewAdapter under the hood, so why do some work and others don't? a) osgQtBrowser --useWidgetImage [--fullscreen] (optional) b) Try to click in the QTextEdit and type, or to select text and drag-and-drop it somewhere else in the QTextEdit. These don't work. c) osgQtBrowser --useWidgetImage --sanityCheck d) Try the operations in b), they all work. e) osgQtBrowser --useWidgetImage --useBrowser [--fullscreen] f) Try to click in the search field and type, it doesn't work. g) osgQtBrowser h) Try the operation in f), it works. 2. Operations on floating windows (--numFloatingWindows 1 or more). Moving by dragging the titlebar, clicking the close button, resizing them, none of these work. I wonder if it's because the OS manages those functions (they're functions of the window decorations) so we need to do something special for that? But in --sanityCheck mode they work. a) osgQtBrowser --useWidgetImage --numFloatingWindows 1 [--fullscreen] b) Try to drag the floating window, click the close button, or drag its sides to resize it. None of these work. c) osgQtBrowser --useWidgetImage --numFloatingWindows 1 --sanityCheck d) Try the operations in b), all they work. e) osgQtBrowser --useWidgetImage [--fullscreen] f) Click the button so that the getInteger() dialog is displayed, then try to move that dialog or close it with the close button, these don't work. g) osgQtBrowser --useWidgetImage --sanityCheck h) Try the operation in f), it works. 3. (Minor) The QGraphicsView's scrollbars don't appear when using QWidgetImage or QWebViewImage. QGraphicsView is a QAbstractScrollArea and it should display scrollbars as soon as the scene is too large to fit the view. a) osgQtBrowser --useWidgetImage --fullscreen b) Resize the OSG window so it's smaller than the QTextEdit. Scrollbars should appear but don't. c) osgQtBrowser --useWidgetImage --sanityCheck d) Try the operation in b), scrollbars appear. Even if you have floating windows (by clicking the button or by adding --numFloatingWindows 1) and move them outside the view, scrollbars appear too. You can't test that case in OSG for now because of problem 2 above, but that's pretty cool. 4. (Minor) In sanity check mode, the widget added to the QGraphicsView is centered. With QGraphicsViewAdapter, it is not. a) osgQtBrowser --useWidgetImage [--fullscreen] b) The QTextEdit and button are not in the center of the image generated by the QGraphicsViewAdapter. c) osgQtBrowser --useWidgetImage --sanityCheck d) The QTextEdit and button are in the center of the QGraphicsView. ------------------------------------------------------------------- As you can see I've put specific repro steps there too, so it's clear what I mean by a given problem. The --sanityCheck mode is useful to see what should happen in a "normal" Qt app that demonstrates the same situation, so hopefully we can get to a point where it behaves the same with --sanityCheck and without."
2010-06-15 21:57:44 +08:00
void repaintRequestedSlot(const QRectF &region);
Moved QWebViewImage and QGraphicsViewAdapter into new osgQt utility library.
2010-03-04 20:15:35 +08:00
};
}
Added newline to fix warnings
2010-06-01 21:32:12 +08:00
#endif
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