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- TABLE OF CONTENTS
-
- penmap_ic/--datasheet--
- penmap_ic/PENMAP_GetClass
- penmap_ic/--datasheet-- penmap_ic/--datasheet--
-
- NAME
- penmap_ic -- create penmap BOOPSI objects
-
- SUPERCLASS
- imageclass
-
- REQUIRES
- None.
-
- DESCRIPTION
- This class will yield color remapped images on any public screen.
- It also supports bitmap scaling. If used with V39 or or greater
- of AmigaOS it can take advantage of pen sharing.
-
- METHODS
- OM_NEW -- Create the penmap image. Passed to superclass,
- then OM_SET.
-
- OM_GET -- Get object attributes. Passed to superclass first.
-
- OM_SET -- Set object attributes. Passed to superclass first.
-
- OM_UPDATE -- Set object notification attributes. Passed to
- superclass first.
-
- IM_DRAW -- Renders the image. Supports IDS_NORMAL and
- IDS_SELECTED drawing states, and does not require
- a DrawInfo structure. The graphics.library function
- BitMapScale () to scale the image if required.
-
- IM_DRAWFRAME -- Renders the image scaled to the frame size
- specified. Supports IDS_NORMAL and IDS_SELECTED drawing
- states, and does not require a DrawInfo structure.
- The graphics.library function BitMapScale () to scale
- the image.
-
- IM_HITFRAME -- Asks the object if a point would be inside it
- if the object was confined (scaled) to the given
- rectangular bounds. Returns TRUE if the given point would
- be inside the object, otherwise FALSE.
-
- IM_ERASEFRAME -- Erase the object using the rectangular
- frame size.
-
- All other methods are passed to the superclass, including OM_DISPOSE.
-
- ATTRIBUTES
-
- IA_Left (WORD)
- IA_Top (WORD)
- Set starting position/offset of image.
- Defaults to 0.
-
- (Applicability is OM_NEW, OM_SET, OM_GET)
-
- IA_Width (WORD)
- IA_Height (WORD)
- Set size of the image, scaling via BitMapScale() if different
- from the chunky image data size.
-
- Defaults to width and height of IA_Data.
-
- (Applicability is OM_NEW, OM_SET, OM_GET)
-
- IA_BGPen
- Specify background pen of a normal image.
-
- Defaults to BACKGROUNDPEN of the screen passed in PENMAP_Screen.
-
- (Applicability is OM_NEW, OM_SET, OM_GET)
-
- IA_Pens
- Sets the pens which the values in the data array represents.
-
- (Applicability is OM_NEW, OM_GET)
-
- IA_Data
- Chunky format image data for normal render.
-
- The data format is a UBYTE array of chunky pen numbers.
- Note this data must be WORD aligned, as the first 4 bytes
- are accessed as two WORDs which specify the width and
- height of the following chunky image data.
-
- Defaults to NULL.
-
- (Applicability is OM_NEW, OM_SET)
-
- PENMAP_SelectedData
- Chunky format image data for selected image render.
-
- (Applicability is OM_NEW, OM_SET)
-
- PENMAP_Palette
- An array of ULONG describing the palette for the picture.
- If you are obtaining pens yourself, you should only pass the
- IA_Pens attribute at object creation time.
-
- The format of the array is:
-
- ULONG palette[] =
- {
- number_triplets,
- red1, green1, blue1,
- red2, green2, blue2,
- ...
- };
-
- (Applicability is OM_NEW, OM_GET)
-
- PENMAP_Screen (struct Screen *)
- Pointer to the screen to use image on. This attribute MUST
- be provided when creating an object of this class.
-
- Defaults to NULL.
-
- (Applicability is OM_NEW, OM_GET)
-
- PENMAP_Transparent (BOOL)
- Remaps chunky pen 0 to the BACKGROUNDPEN.
-
- Defaults to FALSE.
-
- (Applicability is OM_NEW, OM_SET)
-
- PENMAP_Precision
- Set the precision for ObtainBestPen() when penmap is used
- under AmigaOS 3.0 or later. See the ObtainBestPen autodoc
- for more details.
-
- Defaults to PRECISION_IMAGE.
-
- Applicability is (OM_NEW, OM_SET)
-
- PENMAP_ColorMap (struct ColorMap *)
- Pointer to a colormap to use in obtaining best matching pens.
- This tag or, PENMAP_Screen must be provided when creating an
- object of this class. If PENMAP_Screen is passed, penmap will
- use Screen->ViewPort.ColorMap.
-
- Defaults to NULL.
-
- (Applicability is OM_NEW, OM_GET)
-
- PENMAP_MaskBlit (BOOL)
- Causes penmap to render on screen using a mask plane. This
- mask plane is created dynamically by the class.
-
- The mask is created by OR'ing the source bitplanes in to a single
- mask plane using some nifty blitting techniques. This tag should
- be used if penmap objects are used in a layout group that may
- contain a user or program specified backfill. This will allow the
- backfill pattern to flow around the image, making it transparent.
-
- Defaults to FALSE.
-
- (Applicability is OM_NEW, OM_SET)
- penmap_ic/PENMAP_GetClass penmap_ic/PENMAP_GetClass
-
- NAME
- PENMAP_GetClass -- Gets the pointer to the penmap class.
-
- SYNOPSIS
- penmap_class = PENMAP_GetClass();
- D0
-
- Class * PENMAP_GetClass(VOID);
-
- FUNCTION
- Obtains the pointer to the PenMap image class for use with
- NewObject(). This function always returns a valid pointer so
- you do not need to check it. The reason is that if the library
- opens fine, then the pointer returned is already setup. (Of course
- this implies that if opening the library fails, you shouldn't be
- calling this.)
-
- Note that this function does not create the class, that is done
- when the class library is opened.
-
- INPUTS
- Nothing.
-
- RESULT
- penmap_class - Pointer to the PenMap image class.
-
- SEE ALSO
-