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https://git.dev.opencascade.org/repos/occt.git
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a2176e6524
Added Qt sample OCCTOverview providing examples of use of OCCT API with relevant code and demonstration of results in the viewer. Off-topic: some unused images are removed from dox/introduction/images/
111 lines
4.3 KiB
C++
111 lines
4.3 KiB
C++
// Copyright (c) 2020 OPEN CASCADE SAS
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//
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// This file is part of the examples of the Open CASCADE Technology software library.
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in all
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// copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE
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#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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//! 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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//!
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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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class OcctWindow : public Aspect_Window
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{
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DEFINE_STANDARD_RTTIEXT(OcctWindow,Aspect_Window)
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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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//! Destructor
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virtual ~OcctWindow()
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{
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myWidget = NULL;
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}
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//! Returns native Window handle
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virtual Aspect_Drawable NativeHandle() const Standard_OVERRIDE
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{
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return (Aspect_Drawable)myWidget->winId();
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}
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//! Returns parent of native Window handle.
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virtual Aspect_Drawable NativeParentHandle() const Standard_OVERRIDE;
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//! Applies the resizing to the window <me>
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virtual Aspect_TypeOfResize DoResize() Standard_OVERRIDE;
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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 Standard_OVERRIDE
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{
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return !(myWidget->isMinimized() || myWidget->isHidden());
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}
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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 Standard_OVERRIDE { return Standard_True; }
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//! Opens the window <me>.
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virtual void Map() const Standard_OVERRIDE;
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//! Closes the window <me>.
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virtual void Unmap() const Standard_OVERRIDE;
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virtual void Position( Standard_Integer& theX1, Standard_Integer& theY1,
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Standard_Integer& theX2, Standard_Integer& theY2 ) const Standard_OVERRIDE;
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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 Standard_OVERRIDE;
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virtual void Size( Standard_Integer& theWidth, Standard_Integer& theHeight ) const Standard_OVERRIDE;
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virtual Aspect_FBConfig NativeFBConfig() const Standard_OVERRIDE { return NULL; }
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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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