# Blitter_32bppAnim Class Reference

Inheritance diagram for Blitter_32bppAnim:

## Public Member Functions

void | Draw (Blitter::BlitterParams *bp, BlitterMode mode, ZoomLevel zoom)
| Draws a sprite to a (screen) buffer.
void | DrawColourMappingRect (void *dst, int width, int height, PaletteID pal)
| Draw a colourtable to the screen.
void | SetPixel (void *video, int x, int y, uint8 colour)
| Draw a pixel with a given colour on the video-buffer.
void | DrawRect (void *video, int width, int height, uint8 colour)
| Make a single horizontal line in a single colour on the video-buffer.
void | CopyFromBuffer (void *video, const void *src, int width, int height)
| Copy from a buffer to the screen.
void | CopyToBuffer (const void *video, void *dst, int width, int height)
| Copy from the screen to a buffer.
void | ScrollBuffer (void *video, int &left, int &top, int &width, int &height, int scroll_x, int scroll_y)
| Scroll the videobuffer some 'x' and 'y' value.
int | BufferSize (int width, int height)
| Calculate how much memory there is needed for an image of this size in the video-buffer.
void | PaletteAnimate (uint start, uint count)
| Called when the 8bpp palette is changed; you should redraw all pixels on the screen that are equal to the 8bpp palette indexes 'start' to 'start + count'.
Blitter::PaletteAnimation | UsePaletteAnimation ()
| Check if the blitter uses palette animation at all.
const char * | GetName ()
| Get the name of the blitter, the same as the Factory-instance returns.
int | GetBytesPerPixel ()
| Get how many bytes are needed to store a pixel.
void | PostResize ()
| Post resize event.
template<BlitterMode mode>
void | Draw (const Blitter::BlitterParams *bp, ZoomLevel zoom)
| Draws a sprite to a (screen) buffer.

## Private Attributes

uint8 * | anim_buf
| In this buffer we keep track of the 8bpp indexes so we can do palette animation.
int | anim_buf_width
int | anim_buf_height

## Detailed Description

Definition at line 17 of file 32bpp_anim.hpp.

## Member Function Documentation

int Blitter_32bppAnim::BufferSize | ( | int | width,
|  | int | height |
| ) |  |  | `[virtual]`

Calculate how much memory there is needed for an image of this size in the video-buffer.

Parameters:

  | width | The width of the buffer-to-be.
  | height | The height of the buffer-to-be.

Returns:
  The size needed for the buffer.

Reimplemented from Blitter_32bppBase.

Definition at line 409 of file 32bpp_anim.cpp.

void Blitter_32bppAnim::CopyFromBuffer | ( | void * | video,
|  | const void * | src,
|  | int | width,
|  | int | height |
| ) |  |  | `[virtual]`

Copy from a buffer to the screen.

Parameters:

  | video | The destionation pointer (video-buffer).
  | src | The buffer from which the data will be read.
  | width | The width of the buffer.
  | height | The height of the buffer.

Note:
  You can not do anything with the content of the buffer, as the blitter can store non-pixel data in it too!

Reimplemented from Blitter_32bppBase.

Definition at line 293 of file 32bpp_anim.cpp.

References _screen_disable_anim, _use_palette, anim_buf, IsInsideBS(), Blitter_32bppBase::LookupColourInPalette(), PAL_DOS, PALETTE_ANIM_SIZE_DOS, PALETTE_ANIM_SIZE_START, and PALETTE_ANIM_SIZE_WIN.

void Blitter_32bppAnim::CopyToBuffer | ( | const void * | video,
|  | void * | dst,
|  | int | width,
|  | int | height |
| ) |  |  | `[virtual]`

Copy from the screen to a buffer.

Parameters:

  | video | The destination pointer (video-buffer).
  | dst | The buffer in which the data will be stored.
  | width | The width of the buffer.
  | height | The height of the buffer.

Note:
  You can not do anything with the content of the buffer, as the blitter can store non-pixel data in it too!

Reimplemented from Blitter_32bppBase.

Definition at line 335 of file 32bpp_anim.cpp.

References _screen_disable_anim, and anim_buf.

template<BlitterMode mode>

void Blitter_32bppAnim::Draw | ( | const Blitter::BlitterParams * | bp,
|  | ZoomLevel | zoom |
| ) |  |  | `[inline]`

Draws a sprite to a (screen) buffer.

It is templated to allow faster operation.

Template Parameters:

  | mode | blitter mode

Parameters:

  | bp | further blitting parameters
  | zoom | zoom level at which we are drawing

Reimplemented from Blitter_32bppOptimized.

Definition at line 22 of file 32bpp_anim.cpp.

References Blitter_32bppBase::ComposeColourPANoCheck(), Blitter_32bppBase::ComposeColourRGBANoCheck(), Blitter::BlitterParams::dst, Blitter::BlitterParams::height, Blitter_32bppBase::LookupColourInPalette(), Blitter_32bppBase::MakeTransparent(), PALETTE_ANIM_SIZE_START, Blitter::BlitterParams::pitch, Blitter::BlitterParams::remap, Blitter::BlitterParams::skip_top, Blitter::BlitterParams::sprite, and Blitter::BlitterParams::top.

void Blitter_32bppAnim::Draw | ( | Blitter::BlitterParams * | bp,
|  | BlitterMode | mode,
|  | ZoomLevel | zoom |
| ) |  |  | `[virtual]`

Draws a sprite to a (screen) buffer.

Calls adequate templated function.

Parameters:

  | bp | further blitting parameters
  | mode | blitter mode
  | zoom | zoom level at which we are drawing

Reimplemented from Blitter_32bppOptimized.

Definition at line 196 of file 32bpp_anim.cpp.

References _screen_disable_anim.

void Blitter_32bppAnim::DrawColourMappingRect | ( | void * | dst,
|  | int | width,
|  | int | height,
|  | PaletteID | pal |
| ) |  |  | `[virtual]`

Draw a colourtable to the screen.

This is: the colour of the screen is read and is looked-up in the palette to match a new colour, which then is put on the screen again.

Parameters:

  | dst | the destination pointer (video-buffer).
  | width | the width of the buffer.
  | height | the height of the buffer.
  | pal | the palette to use.

Reimplemented from Blitter_32bppSimple.

Definition at line 212 of file 32bpp_anim.cpp.

References _screen_disable_anim, anim_buf, Blitter_32bppBase::MakeGrey(), and Blitter_32bppBase::MakeTransparent().

void Blitter_32bppAnim::DrawRect | ( | void * | video,
|  | int | width,
|  | int | height,
|  | uint8 | colour |
| ) |  |  | `[virtual]`

Make a single horizontal line in a single colour on the video-buffer.

Parameters:

  | video | The destination pointer (video-buffer).
  | width | The length of the line.
  | height | The height of the line.
  | colour | A 8bpp mapping colour.

Reimplemented from Blitter_32bppBase.

Definition at line 264 of file 32bpp_anim.cpp.

References _screen_disable_anim, anim_buf, and Blitter_32bppBase::LookupColourInPalette().

void Blitter_32bppAnim::PaletteAnimate | ( | uint | start,
|  | uint | count |
| ) |  |  | `[virtual]`

Called when the 8bpp palette is changed; you should redraw all pixels on the screen that are equal to the 8bpp palette indexes 'start' to 'start + count'.

Parameters:

  | start | The start index in the 8bpp palette.
  | count | The amount of indexes that are (possible) changed.

Reimplemented from Blitter_32bppBase.

Definition at line 414 of file 32bpp_anim.cpp.

References _screen_disable_anim, anim_buf, IsInsideBS(), and Blitter_32bppBase::LookupColourInPalette().

void Blitter_32bppAnim::ScrollBuffer | ( | void * | video,
|  | int & | left,
|  | int & | top,
|  | int & | width,
|  | int & | height,
|  | int | scroll_x,
|  | int | scroll_y |
| ) |  |  | `[virtual]`

Scroll the videobuffer some 'x' and 'y' value.

Parameters:

  | video | The buffer to scroll into.
  | left | The left value of the screen to scroll.
  | top | The top value of the screen to scroll.
  | width | The width of the screen to scroll.
  | height | The height of the screen to scroll.
  | scroll_x | How much to scroll in X.
  | scroll_y | How much to scroll in Y.

Reimplemented from Blitter_32bppBase.

Definition at line 358 of file 32bpp_anim.cpp.

References _screen_disable_anim, and anim_buf.

void Blitter_32bppAnim::SetPixel | ( | void * | video,
|  | int | x,
|  | int | y,
|  | uint8 | colour |
| ) |  |  | `[virtual]`

Draw a pixel with a given colour on the video-buffer.

Parameters:

  | video | The destination pointer (video-buffer).
  | x | The x position within video-buffer.
  | y | The y position within video-buffer.
  | colour | A 8bpp mapping colour.

Reimplemented from Blitter_32bppBase.

Definition at line 255 of file 32bpp_anim.cpp.

References _screen_disable_anim, anim_buf, and Blitter_32bppBase::LookupColourInPalette().

Blitter::PaletteAnimation Blitter_32bppAnim::UsePaletteAnimation | ( |  | ) | `[virtual]`

Check if the blitter uses palette animation at all.

Returns:
  True if it uses palette animation.

Reimplemented from Blitter_32bppBase.

Definition at line 445 of file 32bpp_anim.cpp.

References Blitter::PALETTE_ANIMATION_BLITTER.

The documentation for this class was generated from the following files:

- src/blitter/32bpp_anim.hpp
- src/blitter/32bpp_anim.cpp