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--
-- File: Xw_GraphicDevice.cdl
-- Created: Tue Oct 19 15:33:10 1993
-- Author: Gerard GRAS
-- corrections MFA 21 Oct 94
---Copyright: Matra Datavision 1993
--
class GraphicDevice from Xw inherits GraphicDevice from Aspect
---Purpose: This class defines an X11 Graphic Device
-- Warning: An Graphic Device is defined by :
-- - a connection "host:server.screen"
-- - a colormap mapping of type Xw_TOM_xxxxx
-- - a "UseDefault" flag which permits the use of the
-- DefaultColormap if possible.
-- The connection can be specified directly
-- or extracted from an existing Window.
-- All Xw_Windows may share the same Graphic Device if
-- you don't want to have any side effects on the stations
-- which have only one hardware pseudo-colormap .
-- Four kind of mapping are possible :
-- 1) Xw_TOM_SIMPLERAMP
-- Allocates the number of required colors in the
-- colormap.
-- The number of user colors depends directly on
-- the hardware colormap size if UseDefault is False,
-- or on the remainding free colors in the hardware colormap
-- if UseDefault is True.
-- 2) Xw_TOM_BESTRAMP
-- Allocates the number of required colors in the
-- colormap but leaves the Odd color indexes free
-- if possible for highlight color management.
-- (plane 0 is reserved for this usage)
-- The number of user colors depends directly on
-- the hardware colormap size if UseDefault is False,
-- or on the remainding free colors in the hardware colormap
-- if UseDefault is True.
-- 3) Xw_TOM_COLORCUBE (the default)
-- Allocates the maximum available colors in the colormap
-- and builds a colorcube at this place.
-- Any user color will be approximate and will be chosen as
-- the nearest of the set of available colorcube colors.
-- In this case the number of user colors can be unlimited.
-- 4) Xw_TOM_HARDWARE
-- May do serious damage to the color system.
-- Must be used for maintenance only.
-- 5) Xw_TOM_READONLY
-- Allocates the number of required read only colors in the
-- default colormap.
-- The number of user colors depends directly on
-- the hardware colormap size.
---References:
uses
AsciiString from TCollection,
Length from Quantity,
GraphicDriver from Aspect,
ColorMap from Xw,
TypeMap from Xw,
WidthMap from Xw,
FontMap from Xw,
MarkMap from Xw,
TypeOfVisual from Xw,
TypeOfMapping from Xw,
Handle from Aspect
raises
GraphicDeviceDefinitionError from Aspect,
BadAccess from Aspect
is
Create
returns mutable GraphicDevice from Xw is protected ;
Create (Connection : CString from Standard ;
Mapping : TypeOfMapping from Xw = Xw_TOM_COLORCUBE ;
Ncolors : Integer from Standard = 0 ;
UseDefault : Boolean from Standard = Standard_True )
returns mutable GraphicDevice from Xw
---Level: Public
---Purpose: Create an Graphic Device on the specified Connection
-- by using ALL screen defaults if possible
-- (i.e:Default Colormap)
-- Warning: Raises if the Device is Badly defined
raises GraphicDeviceDefinitionError from Aspect ;
---------------------------------------------------
-- Category: methods to modify the class definition
---------------------------------------------------
Destroy ( me : mutable )
---Level: Public
---Purpose: Destroies all ressources attached to the GraphicDevice
-- (Windows, Colormaps, ....)
-- Warning: Raises if the Device is Badly defined
raises BadAccess from Aspect is virtual;
---C++: alias ~
---Category: methods to modify the class definition
InitMaps ( me : mutable ; Connection : CString from Standard ;
Mapping : TypeOfMapping from Xw ;
Ncolors : Integer from Standard ;
UseDefault: Boolean from Standard )
---Level: Public
---Purpose: Initializes all ressources attached to the GraphicDevice
-- Category: methods to modify the class definition
-- Warning: Raises if the Device is Badly defined
raises GraphicDeviceDefinitionError from Aspect
is static protected ;
----------------------------
-- Category: Inquire methods
----------------------------
ColorMap2D ( me )
returns ColorMap from Xw is static;
---Level: Internal
---Purpose: Returns the 2D oriented Device color map.
---Category: Inquire methods
VisualClass2D ( me )
returns TypeOfVisual from Xw is static;
---Level: Internal
---Purpose: Returns the 2D oriented Visual Class.
---Category: Inquire methods
OverlayVisualClass2D ( me )
returns TypeOfVisual from Xw is static;
---Level: Internal
---Purpose: Returns the 2D oriented overlay Visual Class.
---Category: Inquire methods
ExtendedColorMap2D ( me )
returns Address from Standard
is static protected ;
---Level: Internal
---Purpose: Returns extended data colormap 2D structure pointer.
---Category: Inquire methods
ExtendedOverlayColorMap2D ( me )
returns Address from Standard
is static protected ;
---Level: Internal
---Purpose: Returns extended data overlay colormap 2D structure pointer.
---Category: Inquire methods
ColorMap3D ( me )
returns ColorMap from Xw is static;
---Level: Internal
---Purpose: Returns the 3D oriented Device color map.
---Category: Inquire methods
VisualClass3D ( me )
returns TypeOfVisual from Xw is static;
---Level: Internal
---Purpose: Returns the 3D oriented Visual Class.
---Category: Inquire methods
OverlayVisualClass3D ( me )
returns TypeOfVisual from Xw is static;
---Level: Internal
---Purpose: Returns the 3D oriented overlay Visual Class.
---Category: Inquire methods
ExtendedColorMap3D ( me )
returns Address from Standard
is static protected ;
---Level: Internal
---Purpose: Returns extended data colormap 3D structure pointer.
---Category: Inquire methods
ExtendedOverlayColorMap3D ( me )
returns Address from Standard
is static protected ;
---Level: Internal
---Purpose: Returns extended data overlay colormap 3D structure pointer.
---Category: Inquire methods
TypeMap ( me )
returns TypeMap from Xw is static;
---Level: Internal
---Purpose: Returns the Device Type map.
---Category: Inquire methods
ExtendedTypeMap ( me )
returns Address from Standard
is static protected ;
---Level: Internal
---Purpose: Returns extended data typemap structure pointer.
---Category: Inquire methods
WidthMap ( me )
returns WidthMap from Xw is static;
---Level: Internal
---Purpose: Returns the Device Width map.
---Category: Inquire methods
ExtendedWidthMap ( me )
returns Address from Standard
is static protected ;
---Level: Internal
---Purpose: Returns extended data widthmap structure pointer.
---Category: Inquire methods
FontMap ( me )
returns FontMap from Xw is static;
---Level: Internal
---Purpose: Returns the Device Font map.
---Category: Inquire methods
ExtendedFontMap ( me )
returns Address from Standard
is static protected ;
---Level: Internal
---Purpose: Returns extended data fontmap structure pointer.
---Category: Inquire methods
MarkMap ( me )
returns MarkMap from Xw is static;
---Level: Internal
---Purpose: Returns the Device Mark map.
---Category: Inquire methods
ExtendedMarkMap ( me )
returns Address from Standard
is static protected ;
---Level: Internal
---Purpose: Returns extended data markmap structure pointer.
---Category: Inquire methods
Display ( me )
returns CString from Standard is static;
---Level: Internal
---Purpose: Returns the Device connection string.
---Category: Inquire methods
XDisplay ( me )
returns Address from Standard is static;
---Level: Internal
---Purpose: Returns the Device Display Address.
---Category: Inquire methods
ExtendedDisplay ( me )
returns Address from Standard
is static protected ;
---Level: Internal
---Purpose: Returns extended data display structure pointer.
---Category: Inquire methods
DisplaySize ( me ; Width, Height : out Integer from Standard )
---Level: Public
---Purpose: Returns the Display size in PIXEL
-- Warning: Raises if the connection is not defined properly
raises BadAccess from Aspect is static;
DisplaySize ( me ; Width, Height : out Length from Quantity )
---Level: Public
---Purpose: Returns the Display size in METER
-- Warning: Raises if the connection is not defined properly
raises BadAccess from Aspect is static;
PlaneLayer ( me ; aVisualID : Integer from Standard )
returns Integer from Standard
---Level: Public
---Purpose: Returns the plane layer ID from a visual ID
-- Warning: Raises if the connection is not defined properly
raises BadAccess from Aspect is static;
GraphicDriver ( me )
returns GraphicDriver from Aspect
is redefined;
fields
MyDisplay : AsciiString from TCollection ;
MyColorMap2D : ColorMap from Xw ;
MyColorMap3D : ColorMap from Xw ;
MyTypeMap : TypeMap from Xw ;
MyWidthMap : WidthMap from Xw ;
MyFontMap : FontMap from Xw ;
MyMarkMap : MarkMap from Xw ;
MyExtendedDisplay : Address from Standard is protected ;
friends
class Window from Xw
end GraphicDevice from Xw ;
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