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occt/src/Aspect/Aspect_Window.hxx
kgv 879768fbf2 0032886: Visualization, V3d_View - introduce interface for creating a subview 
V3d_View/Graphic3d_CView pair has been extended to define subview within the other V3d_View instance.
The initialization is done in form of V3d_View::SetWindow() taking parent V3d_View instance on input.

Subview definition includes dimensions defined as a fraction of a parent view and offset from a corner.
This scheme allows splitting window into several subviews automatically occupying entire viewport,
like splitting window into two vertial subviews (100%x50% + 100%x50%),
three horizontal subviews (33%x100% + 30%x100% + 30%x100%),
1 + 2 stacked subviews (50%x100% + 50%x50% + 50%x50%),
as well as thumbnail-alike subviews displayed on top of another larger view.

OpenGl_View::Redraw() blits content of subviews into the window within immediate redraw step.

AIS_ViewController::FlushViewEvents() has been extended
to re-calculate mouse input into local subview coordinates.
AIS_ViewController::handleViewRedraw() first redraws subviews and then parent views.
Introduced new callback AIS_ViewController::OnSubviewChanged()
to switch input focus to another subview on mouse click,
implemented by ViewerTest_EventManager (has to be done at application level).

vinit command has been extended with parameters -subview and -parent to create a subview.
In addition, view dimension arguments now can be defined as a fraction of screen size instead of pixels.
2022-04-15 18:23:16 +03:00

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// Created by: NW,JPB,CAL
// Copyright (c) 1991-1999 Matra Datavision
// Copyright (c) 1999-2014 OPEN CASCADE SAS
//
// This file is part of Open CASCADE Technology software library.
//
// This library is free software; you can redistribute it and/or modify it under
// the terms of the GNU Lesser General Public License version 2.1 as published
// by the Free Software Foundation, with special exception defined in the file
// OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
// distribution for complete text of the license and disclaimer of any warranty.
//
// Alternatively, this file may be used under the terms of Open CASCADE
// commercial license or contractual agreement.
#ifndef _Aspect_Window_HeaderFile
#define _Aspect_Window_HeaderFile
#include <Aspect_Background.hxx>
#include <Aspect_GradientBackground.hxx>
#include <Aspect_FBConfig.hxx>
#include <Aspect_FillMethod.hxx>
#include <Quantity_Color.hxx>
#include <Aspect_GradientFillMethod.hxx>
#include <Aspect_TypeOfResize.hxx>
#include <Aspect_Drawable.hxx>
#include <Graphic3d_Vec2.hxx>
#include <Standard.hxx>
#include <Standard_Transient.hxx>
#include <Standard_Type.hxx>
#include <TCollection_AsciiString.hxx>
class Aspect_DisplayConnection;
DEFINE_STANDARD_HANDLE(Aspect_Window, Standard_Transient)
//! Defines a window.
class Aspect_Window : public Standard_Transient
{
DEFINE_STANDARD_RTTIEXT(Aspect_Window, Standard_Transient)
public:
//! Returns True if the window <me> is virtual
Standard_EXPORT Standard_Boolean IsVirtual() const;
//! Setup the virtual state
Standard_EXPORT void SetVirtual (const Standard_Boolean theVirtual);
//! Returns window top-left corner.
Graphic3d_Vec2i TopLeft() const
{
Graphic3d_Vec2i aTopLeft, aBotRight;
Position (aTopLeft.x(), aTopLeft.y(), aBotRight.x(), aBotRight.y());
return aTopLeft;
}
//! Returns window dimensions.
Graphic3d_Vec2i Dimensions() const
{
Graphic3d_Vec2i aSize;
Size (aSize.x(), aSize.y());
return aSize;
}
//! Returns connection to Display or NULL.
const Handle(Aspect_DisplayConnection)& DisplayConnection() const { return myDisplay; }
//! Returns the window background.
Standard_EXPORT Aspect_Background Background() const;
//! Returns the current image background fill mode.
Standard_EXPORT Aspect_FillMethod BackgroundFillMethod() const;
//! Returns the window gradient background.
Standard_EXPORT Aspect_GradientBackground GradientBackground() const;
//! Modifies the window background.
Standard_EXPORT void SetBackground (const Aspect_Background& theBack);
//! Modifies the window background.
Standard_EXPORT void SetBackground (const Quantity_Color& theColor);
//! Modifies the window gradient background.
Standard_EXPORT void SetBackground (const Aspect_GradientBackground& theBackground);
//! Modifies the window gradient background.
Standard_EXPORT void SetBackground (const Quantity_Color& theFirstColor, const Quantity_Color& theSecondColor, const Aspect_GradientFillMethod theFillMethod);
public:
//! Returns True if the window <me> is opened
//! and False if the window is closed.
Standard_EXPORT virtual Standard_Boolean IsMapped() const = 0;
//! Opens the window <me>.
Standard_EXPORT virtual void Map() const = 0;
//! Closes the window <me>.
Standard_EXPORT virtual void Unmap() const = 0;
//! Apply the resizing to the window <me>.
Standard_EXPORT virtual Aspect_TypeOfResize DoResize() = 0;
//! Apply the mapping change to the window <me>.
//! and returns TRUE if the window is mapped at screen.
Standard_EXPORT virtual Standard_Boolean DoMapping() const = 0;
//! Returns The Window RATIO equal to the physical
//! WIDTH/HEIGHT dimensions
Standard_EXPORT virtual Standard_Real Ratio() const = 0;
//! Returns The Window POSITION in PIXEL
Standard_EXPORT virtual void Position (Standard_Integer& X1, Standard_Integer& Y1, Standard_Integer& X2, Standard_Integer& Y2) const = 0;
//! Returns The Window SIZE in PIXEL
Standard_EXPORT virtual void Size (Standard_Integer& Width, Standard_Integer& Height) const = 0;
//! Returns native Window handle (HWND on Windows, Window with Xlib, and so on)
Standard_EXPORT virtual Aspect_Drawable NativeHandle() const = 0;
//! Returns parent of native Window handle (HWND on Windows, Window with Xlib, and so on)
Standard_EXPORT virtual Aspect_Drawable NativeParentHandle() const = 0;
//! Returns native Window FB config (GLXFBConfig on Xlib)
Standard_EXPORT virtual Aspect_FBConfig NativeFBConfig() const = 0;
//! Sets window title.
virtual void SetTitle (const TCollection_AsciiString& theTitle) { (void )theTitle; }
//! Invalidate entire window content.
//!
//! Implementation is expected to allow calling this method from non-GUI thread,
//! e.g. by queuing exposure event into window message queue or in other thread-safe manner.
//!
//! Optional display argument should be passed when called from non-GUI thread
//! on platforms implementing thread-unsafe connections to display.
//! NULL can be passed instead otherwise.
virtual void InvalidateContent (const Handle(Aspect_DisplayConnection)& theDisp) { (void )theDisp; }
public:
//! Return device pixel ratio (logical to backing store scale factor).
virtual Standard_Real DevicePixelRatio() const { return 1.0; }
//! Convert point from logical units into backing store units.
virtual Graphic3d_Vec2d ConvertPointToBacking (const Graphic3d_Vec2d& thePnt) const
{
return thePnt * DevicePixelRatio();
}
//! Convert point from backing store units to logical units.
virtual Graphic3d_Vec2d ConvertPointFromBacking (const Graphic3d_Vec2d& thePnt) const
{
return thePnt / DevicePixelRatio();
}
public:
//! Dumps the content of me into the stream
Standard_EXPORT void DumpJson (Standard_OStream& theOStream, Standard_Integer theDepth = -1) const;
protected:
//! Initializes the data of a Window.
Standard_EXPORT Aspect_Window();
protected:
Handle(Aspect_DisplayConnection) myDisplay; //!< Display connection
Aspect_Background MyBackground;
Aspect_GradientBackground MyGradientBackground;
Aspect_FillMethod MyBackgroundFillMethod;
Standard_Boolean MyIsVirtual;
};
#endif // _Aspect_Window_HeaderFile
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