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92 lines
2.9 KiB
C++
92 lines
2.9 KiB
C++
#ifndef OcctWindow_H
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#define OcctWindow_H
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#include <Aspect_Window.hxx>
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#include <Standard_WarningsDisable.hxx>
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#include <QWidget>
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#include <Standard_WarningsRestore.hxx>
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class OcctWindow;
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/*
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OcctWindow class implements Aspect_Window interface using Qt API
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as a platform-independent source of window geometry information.
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A similar class should be used instead of platform-specific OCCT
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classes (WNT_Window, Xw_Window) in any Qt 5 application using OCCT
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3D visualization.
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With Qt 5, the requirement for a Qt-based application to rely fully
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on Qt public API and stop using platform-specific APIs looks mandatory.
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An example of this is changed QWidget event sequence: when a widget is
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first shown on the screen, a resize event is generated before the
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underlying native window is resized correctly, however the QWidget instance
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already holds correct size information at that moment. The OCCT classes
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acting as a source of window geometry for V3d_View class (WNT_Window, Xw_Window)
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are no longer compatible with changed Qt behavior because they rely on
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platform-specific API that cannot return correct window geometry information
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in some cases. A reasonable solution is to provide a Qt-based implementation
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of Aspect_Window interface at application level.
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*/
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class OcctWindow : public Aspect_Window
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{
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public:
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//! Constructor
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OcctWindow( QWidget* theWidget, const Quantity_NameOfColor theBackColor = Quantity_NOC_MATRAGRAY );
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virtual void Destroy();
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//! Destructor
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~OcctWindow()
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{
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Destroy();
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}
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//! Returns native Window handle
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virtual Aspect_Drawable NativeHandle() const;
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//! Returns parent of native Window handle.
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virtual Aspect_Drawable NativeParentHandle() const;
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//! Applies the resizing to the window <me>
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virtual Aspect_TypeOfResize DoResize();
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//! Returns True if the window <me> is opened
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//! and False if the window is closed.
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virtual Standard_Boolean IsMapped() const;
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//! Apply the mapping change to the window <me>
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//! and returns TRUE if the window is mapped at screen.
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virtual Standard_Boolean DoMapping() const { return Standard_True; }
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//! Opens the window <me>.
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virtual void Map() const;
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//! Closes the window <me>.
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virtual void Unmap() const;
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virtual void Position( Standard_Integer& theX1, Standard_Integer& theY1,
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Standard_Integer& theX2, Standard_Integer& theY2 ) const;
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//! Returns The Window RATIO equal to the physical
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//! WIDTH/HEIGHT dimensions.
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virtual Standard_Real Ratio() const;
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virtual void Size( Standard_Integer& theWidth, Standard_Integer& theHeight ) const;
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virtual Aspect_FBConfig NativeFBConfig() const Standard_OVERRIDE { return NULL; }
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DEFINE_STANDARD_RTTIEXT(OcctWindow,Aspect_Window)
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protected:
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Standard_Integer myXLeft;
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Standard_Integer myYTop;
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Standard_Integer myXRight;
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Standard_Integer myYBottom;
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QWidget* myWidget;
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};
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#endif // OcctWindow_H
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