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/*
* libeg/libeg.h
* EFI graphics library header for users
*
* Copyright (c) 2006 Christoph Pfisterer
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the
* distribution.
*
* * Neither the name of Christoph Pfisterer nor the names of the
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef __LIBEG_LIBEG_H__
#define __LIBEG_LIBEG_H__
/* types */
/* This should be compatible with EFI_UGA_PIXEL */
typedef struct {
UINT8 b, g, r, a;
} EG_PIXEL;
typedef struct {
UINTN Width;
UINTN Height;
BOOLEAN HasAlpha;
EG_PIXEL *PixelData;
} EG_IMAGE;
#define EG_EIPIXELMODE_GRAY (0)
#define EG_EIPIXELMODE_GRAY_ALPHA (1)
#define EG_EIPIXELMODE_COLOR (2)
#define EG_EIPIXELMODE_COLOR_ALPHA (3)
#define EG_EIPIXELMODE_ALPHA (4)
#define EG_MAX_EIPIXELMODE EG_EIPIXELMODE_ALPHA
#define EG_EICOMPMODE_NONE (0)
#define EG_EICOMPMODE_RLE (1)
#define EG_EICOMPMODE_EFICOMPRESS (2)
typedef struct {
UINTN Width;
UINTN Height;
UINTN PixelMode;
UINTN CompressMode;
const UINT8 *Data;
UINTN DataLength;
} EG_EMBEDDED_IMAGE;
/* functions */
VOID egInitScreen(VOID);
VOID egGetScreenSize(OUT UINTN *ScreenWidth, OUT UINTN *ScreenHeight);
BOOLEAN egHasGraphicsMode(VOID);
BOOLEAN egIsGraphicsModeEnabled(VOID);
VOID egSetGraphicsModeEnabled(IN BOOLEAN Enable);
// NOTE: Even when egHasGraphicsMode() returns FALSE, you should
// call egSetGraphicsModeEnabled(FALSE) to ensure the system
// is running in text mode. egHasGraphicsMode() only determines
// if libeg can draw to the screen in graphics mode.
EG_IMAGE * egCreateImage(IN UINTN Width, IN UINTN Height, IN BOOLEAN HasAlpha);
EG_IMAGE * egCreateFilledImage(IN UINTN Width, IN UINTN Height, IN BOOLEAN HasAlpha, IN EG_PIXEL *Color);
EG_IMAGE * egCopyImage(IN EG_IMAGE *Image);
VOID egFreeImage(IN EG_IMAGE *Image);
EG_IMAGE * egLoadImage(IN EFI_FILE_HANDLE BaseDir, IN CHAR16 *FileName, IN BOOLEAN WantAlpha);
EG_IMAGE * egLoadIcon(IN EFI_FILE_HANDLE BaseDir, IN CHAR16 *FileName, IN UINTN IconSize);
EG_IMAGE * egDecodeImage(IN UINT8 *FileData, IN UINTN FileDataLength, IN CHAR16 *Format, IN BOOLEAN WantAlpha);
EG_IMAGE * egPrepareEmbeddedImage(IN EG_EMBEDDED_IMAGE *EmbeddedImage, IN BOOLEAN WantAlpha);
EG_IMAGE * egEnsureImageSize(IN EG_IMAGE *Image, IN UINTN Width, IN UINTN Height, IN EG_PIXEL *Color);
EFI_STATUS egLoadFile(IN EFI_FILE_HANDLE BaseDir, IN CHAR16 *FileName,
OUT UINT8 **FileData, OUT UINTN *FileDataLength);
EFI_STATUS egSaveFile(IN EFI_FILE_HANDLE BaseDir OPTIONAL, IN CHAR16 *FileName,
IN UINT8 *FileData, IN UINTN FileDataLength);
VOID egFillImage(IN OUT EG_IMAGE *CompImage, IN EG_PIXEL *Color);
VOID egFillImageArea(IN OUT EG_IMAGE *CompImage,
IN UINTN AreaPosX, IN UINTN AreaPosY,
IN UINTN AreaWidth, IN UINTN AreaHeight,
IN EG_PIXEL *Color);
VOID egComposeImage(IN OUT EG_IMAGE *CompImage, IN EG_IMAGE *TopImage, IN UINTN PosX, IN UINTN PosY);
VOID egMeasureText(IN CHAR16 *Text, OUT UINTN *Width, OUT UINTN *Height);
VOID egRenderText(IN CHAR16 *Text, IN OUT EG_IMAGE *CompImage, IN UINTN PosX, IN UINTN PosY);
VOID egClearScreen(IN EG_PIXEL *Color);
VOID egDrawImage(IN EG_IMAGE *Image, IN UINTN ScreenPosX, IN UINTN ScreenPosY);
VOID egDrawImageArea(IN EG_IMAGE *Image,
IN UINTN AreaPosX, IN UINTN AreaPosY,
IN UINTN AreaWidth, IN UINTN AreaHeight,
IN UINTN ScreenPosX, IN UINTN ScreenPosY);
VOID egScreenShot(VOID);
#endif /* __LIBEG_LIBEG_H__ */
/* EOF */
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