Module Description: Implement the MHEG5 Bitmap Class. 32 Bitmap Class Defines the behaviour of a two-dimensional array of pixels. Base class: Visible Subclasses: None Status: Concrete class.
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Data Structures |
| struct | MHEG5Bitmap |
Functions |
| void | MHEG5bitmapInit (MHEG5Bitmap *bitmap) |
| | <Function description>="">
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| void | MHEG5bitmapFree (MHEG5Bitmap *bitmap) |
| | Free off all memory associated with the specified object, including any exchanged attributes and internal data. The data holding the object itself is not freed.
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| MHEG5Bitmap * | MHEG5bitmapClone (MHEG5Bitmap *source) |
| | Copy a bitmap object with original values.
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| void | MHEG5bitmapPrepare (MHEG5Bitmap *bitmap) |
| | Apply the preparation behaviour of the bitmap class. As this class has no own preparation behaviour this function just invokes the preparation behaviour from the base class.
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| void | MHEG5bitmapActivate (MHEG5Bitmap *bitmap) |
| | Apply the activation behaviour of the bitmap class. As this class has no own activation behaviour this function just invokes the activation behaviour from the base class.
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| void | MHEG5bitmapDeactivate (MHEG5Bitmap *bitmap) |
| | Apply the deactivation behaviour of the bitmap class. As this class has no own deactivation behaviour this function just invokes the deactivation behaviour from the base class.
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| void | MHEG5bitmapDestruct (MHEG5Bitmap *bitmap) |
| | Destruct a bitmap object.
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| MHEG5ErrorCode | MHEG5scaleBitmap (MHEG5Root *target, MHEG5GList *params) |
| | The effect of this action is to scale the contents of the Bitmap to the size (XScale, YScale). Implementation of the ScaleBitmap (XScale, YScale) action of the bitmap class.
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| MHEG5ErrorCode | MHEG5setTransparency (MHEG5Root *target, MHEG5GList *params) |
| | Change the value of the Transparency attribute. Implementation of the SetTransparency (NewTransparency) action of the bitmap class.
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| MHEG5ErrorCode | MHEG5setBitmapDecodeOffset (MHEG5Root *target, MHEG5GList *params) |
| | Implementation of the SetBitmapDecodeOffset (NewXOffset, NewYOffset) action of the bitmap class. SetBitmapDecodeOffset (NewXOffset, NewYOffset) Change the location of the decoded and scaled bitmap with respect to the target Bitmap object. The offset parameters may be negative. Execute the following sequence of actions: 1. Set the BitmapDecodeOffset attribute according to NewXOffset and NewYOffset. 2. If the Bitmap object is active, redraw the graphic widget representing the object on the screen in the bounding box defined by the BoxSize and Position attributes and according to its position in the DisplayStack of the active Application object. Provisions of use: The Target object shall be an available Bitmap object. NewXOffset and NewYOffset shall correspond to an offset interpreted in the Scene coordinate system defined by the SceneCoordinateSystem attribute of the currently active Scene. SetBitmapDecodeOffset --> Target, NewXOffset, NewYOffset Target --> GenericObjectReference NewXOffset, NewYOffset --> GenericInteger.
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| MHEG5ErrorCode | MHEG5getBitmapDecodeOffset (MHEG5Root *target, MHEG5GList *params) |
| | Implementation of the GetBitmapDecodeOffset (XOffset, YOffset) action of the bitmap class GetBitmapDecodeOffset (XOffsetVar, YOffsetVar) Return the location of the decoded and scaled bitmap with respect to the target Bitmap object. The offset values may be negative. Set the Variables referenced by XPositionVar and YPositionVar to the value of the X and Y decode offset of the target Bitmap object respectively. Provisions of use: The Target object shall be an available Bitmap object. XOffsetVar and YOffsetVar shall refer to active IntegerVariable objects. GetBitmapDecodeOffset --> Target, XOffsetVar, YOffsetVar Target --> GenericObjectReference XOffsetVar, YOffsetVar --> ObjectReference.
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Module Description: Implement the MHEG5 Bitmap Class. 32 Bitmap Class Defines the behaviour of a two-dimensional array of pixels. Base class: Visible Subclasses: None Status: Concrete class.
- Date:
- 05/02/2002
- Author:
- R.Freeman
Implementation of the SetBitmapDecodeOffset (NewXOffset, NewYOffset) action of the bitmap class. SetBitmapDecodeOffset (NewXOffset, NewYOffset) Change the location of the decoded and scaled bitmap with respect to the target Bitmap object. The offset parameters may be negative. Execute the following sequence of actions: 1. Set the BitmapDecodeOffset attribute according to NewXOffset and NewYOffset. 2. If the Bitmap object is active, redraw the graphic widget representing the object on the screen in the bounding box defined by the BoxSize and Position attributes and according to its position in the DisplayStack of the active Application object. Provisions of use: The Target object shall be an available Bitmap object. NewXOffset and NewYOffset shall correspond to an offset interpreted in the Scene coordinate system defined by the SceneCoordinateSystem attribute of the currently active Scene. SetBitmapDecodeOffset --> Target, NewXOffset, NewYOffset Target --> GenericObjectReference NewXOffset, NewYOffset --> GenericInteger.
- Parameters:
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| target | target object for this action |
| params | Action parameters |
- Returns:
- MHEG5ErrorCode.
1.7.6.1