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# Class CL_BMPProvider

Surface provider that can load BMP files.
Contained in: global
Derived from: CL_SurfaceProvider_Generic
Derived by: none
Group: Display (Surface Providers)

#include <ClanLib/display.h>

### public function member index:

### Construction:

``static` `CL_Surface`*` | `create` | `(`std::string` `handle`, `CL_InputSourceProvider`* `provider`, `bool` `transparent`=false, `short` `trans_col`=-1)`;
`` | `CL_BMPProvider` | `(`std::string` `name`, `CL_InputSourceProvider`* `provider`, `bool` `transparent`=false, `short` `trans_col`=-1)`;
``virtual`` | `~CL_BMPProvider` | `()`;

### Attributes:

``virtual` `unsigned` `int`` | `get_pitch` | `() `const``;
``virtual` `unsigned` `int`` | `get_width` | `() `const``;
``virtual` `unsigned` `int`` | `get_height` | `() `const``;
``virtual` `unsigned` `int`` | `get_num_frames` | `() `const``;
``virtual` `unsigned` `int`` | `get_red_mask` | `() `const``;
``virtual` `unsigned` `int`` | `get_green_mask` | `() `const``;
``virtual` `unsigned` `int`` | `get_blue_mask` | `() `const``;
``virtual` `unsigned` `int`` | `get_alpha_mask` | `() `const``;
``virtual` `unsigned` `int`` | `get_depth` | `() `const``;
``virtual` `CL_Palette`*` | `get_palette` | `() `const``;
``virtual` `bool`` | `is_indexed` | `() `const``;
``virtual` `bool`` | `uses_src_colorkey` | `() `const``;
``virtual` `unsigned` `int`` | `get_src_colorkey` | `() `const``;
``virtual` `void`*` | `get_data` | `() `const``;

### Operations:

``virtual` `void`` | `perform_lock` | `()`;
``virtual` `void`` | `perform_unlock` | `()`;

## Description:

This code currently supports Win32 DIBs in uncompressed 8 and 24 bpp.

## Function Member Descriptions:

CL_BMPProvider::CL_BMPProvider - Constructs a surface provider that can read bmp files.
`` `CL_BMPProvider` `(`std::string` `name`, `CL_InputSourceProvider`* `provider`, `bool` `transparent`=false, `short` `trans_col`=-1)`;

> name - Name of the bmp file to load.
> provider - Input source provider that delivers the bmp file.
> transparent - True if a color in image should be transparent.
> trans_col - Transparency color used if 'transparent' is true. Defaults to color 0.

CL_BMPProvider::create - Loads the bmp file 'handle' from the inputsource provider 'provider.
Creates a CL_Surface using the bmp image and returns it.
``static` `CL_Surface`*` `create` `(`std::string` `handle`, `CL_InputSourceProvider`* `provider`, `bool` `transparent`=false, `short` `trans_col`=-1)`;

CL_BMPProvider::get_alpha_mask - Get alpha mask
``virtual` `unsigned` `int`` `get_alpha_mask` `() `const``;

CL_BMPProvider::get_blue_mask - Get blue mask
``virtual` `unsigned` `int`` `get_blue_mask` `() `const``;

CL_BMPProvider::get_data - Returns the image data. Provider must be locked before pointer is valid.
``virtual` `void`*` `get_data` `() `const``;

CL_BMPProvider::get_depth - Get depth
``virtual` `unsigned` `int`` `get_depth` `() `const``;

CL_BMPProvider::get_green_mask - Get green mask
``virtual` `unsigned` `int`` `get_green_mask` `() `const``;

CL_BMPProvider::get_height - Returns the height of the image.
``virtual` `unsigned` `int`` `get_height` `() `const``;

CL_BMPProvider::get_num_frames - Returns the number of subsprites in the image.
``virtual` `unsigned` `int`` `get_num_frames` `() `const``;

CL_BMPProvider::get_palette - Returns the palette used by the image. NULL if system palette.
``virtual` `CL_Palette`*` `get_palette` `() `const``;

CL_BMPProvider::get_pitch - Returns the pitch of the image (bytes per line).
``virtual` `unsigned` `int`` `get_pitch` `() `const``;

CL_BMPProvider::get_red_mask - Get red mask
``virtual` `unsigned` `int`` `get_red_mask` `() `const``;

CL_BMPProvider::get_src_colorkey - Returns the transparency color used, -1 if none.
``virtual` `unsigned` `int`` `get_src_colorkey` `() `const``;

CL_BMPProvider::get_width - Returns the width of the image.
``virtual` `unsigned` `int`` `get_width` `() `const``;

CL_BMPProvider::is_indexed - Is Indexed
``virtual` `bool`` `is_indexed` `() `const``;

CL_BMPProvider::perform_lock - Locks the surface provider.
``virtual` `void`` `perform_lock` `()`;

CL_BMPProvider::perform_unlock - Unlocks the surface provider.
``virtual` `void`` `perform_unlock` `()`;

CL_BMPProvider::uses_src_colorkey - Uses src colourkey
``virtual` `bool`` `uses_src_colorkey` `() `const``;

CL_BMPProvider::~CL_BMPProvider - BMP Provider Destructor
``virtual`` `~CL_BMPProvider` `()`;

## Variable Member Descriptions: