code.delx.au - refind/blob - libeg/libeg.h

   1 /*
   2  * libeg/libeg.h
   3  * EFI graphics library header for users
   4  *
   5  * Copyright (c) 2006 Christoph Pfisterer
   6  * All rights reserved.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted provided that the following conditions are
  10  * met:
  11  *
  12  *  * Redistributions of source code must retain the above copyright
  13  *    notice, this list of conditions and the following disclaimer.
  14  *
  15  *  * Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in the
  17  *    documentation and/or other materials provided with the
  18  *    distribution.
  19  *
  20  *  * Neither the name of Christoph Pfisterer nor the names of the
  21  *    contributors may be used to endorse or promote products derived
  22  *    from this software without specific prior written permission.
  23  *
  24  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  25  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  26  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  27  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  28  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  29  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  30  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  31  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  32  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  33  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  34  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  35  */
  36
  37 #ifndef __LIBEG_LIBEG_H__
  38 #define __LIBEG_LIBEG_H__
  39
  40 #ifndef __MAKEWITH_GNUEFI
  41 #include "../include/tiano_includes.h"
  42 #endif
  43
  44 /* types */
  45
  46 typedef enum ColorTypes {
  47    white,
  48    black
  49 } Colors;
  50
  51 /* This should be compatible with EFI_UGA_PIXEL */
  52 typedef struct {
  53     UINT8 b, g, r, a;
  54 } EG_PIXEL;
  55
  56 typedef struct {
  57     UINTN       Width;
  58     UINTN       Height;
  59     BOOLEAN     HasAlpha;
  60     EG_PIXEL    *PixelData;
  61 } EG_IMAGE;
  62
  63 #define EG_EIPIXELMODE_GRAY         (0)
  64 #define EG_EIPIXELMODE_GRAY_ALPHA   (1)
  65 #define EG_EIPIXELMODE_COLOR        (2)
  66 #define EG_EIPIXELMODE_COLOR_ALPHA  (3)
  67 #define EG_EIPIXELMODE_ALPHA        (4)
  68 #define EG_MAX_EIPIXELMODE          EG_EIPIXELMODE_ALPHA
  69
  70 #define EG_EICOMPMODE_NONE          (0)
  71 #define EG_EICOMPMODE_RLE           (1)
  72 #define EG_EICOMPMODE_EFICOMPRESS   (2)
  73
  74 #define ICON_EXTENSIONS L"png,icns"
  75
  76 typedef struct {
  77     UINTN       Width;
  78     UINTN       Height;
  79     UINTN       PixelMode;
  80     UINTN       CompressMode;
  81     const UINT8 *Data;
  82     UINTN       DataLength;
  83 } EG_EMBEDDED_IMAGE;
  84
  85 /* functions */
  86
  87 VOID egInitScreen(VOID);
  88 BOOLEAN egGetResFromMode(UINTN *ModeWidth, UINTN *Height);
  89 VOID egGetScreenSize(OUT UINTN *ScreenWidth, OUT UINTN *ScreenHeight);
  90 CHAR16 * egScreenDescription(VOID);
  91 BOOLEAN egHasGraphicsMode(VOID);
  92 BOOLEAN egIsGraphicsModeEnabled(VOID);
  93 VOID egSetGraphicsModeEnabled(IN BOOLEAN Enable);
  94 // NOTE: Even when egHasGraphicsMode() returns FALSE, you should
  95 //  call egSetGraphicsModeEnabled(FALSE) to ensure the system
  96 //  is running in text mode. egHasGraphicsMode() only determines
  97 //  if libeg can draw to the screen in graphics mode.
  98
  99 EG_IMAGE * egCreateImage(IN UINTN Width, IN UINTN Height, IN BOOLEAN HasAlpha);
 100 EG_IMAGE * egCreateFilledImage(IN UINTN Width, IN UINTN Height, IN BOOLEAN HasAlpha, IN EG_PIXEL *Color);
 101 EG_IMAGE * egCopyImage(IN EG_IMAGE *Image);
 102 EG_IMAGE * egCropImage(IN EG_IMAGE *Image, IN UINTN StartX, IN UINTN StartY, IN UINTN Width, IN UINTN Height);
 103 EG_IMAGE * egScaleImage(EG_IMAGE *Image, UINTN NewWidth, UINTN NewHeight);
 104 VOID egFreeImage(IN EG_IMAGE *Image);
 105
 106 EG_IMAGE * egLoadImage(IN EFI_FILE* BaseDir, IN CHAR16 *FileName, IN BOOLEAN WantAlpha);
 107 EG_IMAGE * egLoadIcon(IN EFI_FILE* BaseDir, IN CHAR16 *FileName, IN UINTN IconSize);
 108 EG_IMAGE * egLoadIconAnyType(IN EFI_FILE *BaseDir, IN CHAR16 *SubdirName, IN CHAR16 *BaseName, IN UINTN IconSize);
 109 EG_IMAGE * egFindIcon(IN CHAR16 *BaseName, IN UINTN IconSize);
 110 EG_IMAGE * egPrepareEmbeddedImage(IN EG_EMBEDDED_IMAGE *EmbeddedImage, IN BOOLEAN WantAlpha);
 111
 112 EG_IMAGE * egEnsureImageSize(IN EG_IMAGE *Image, IN UINTN Width, IN UINTN Height, IN EG_PIXEL *Color);
 113
 114 EFI_STATUS egLoadFile(IN EFI_FILE* BaseDir, IN CHAR16 *FileName,
 115                       OUT UINT8 **FileData, OUT UINTN *FileDataLength);
 116 EFI_STATUS egFindESP(OUT EFI_FILE_HANDLE *RootDir);
 117 EFI_STATUS egSaveFile(IN EFI_FILE* BaseDir OPTIONAL, IN CHAR16 *FileName,
 118                       IN UINT8 *FileData, IN UINTN FileDataLength);
 119
 120 VOID egFillImage(IN OUT EG_IMAGE *CompImage, IN EG_PIXEL *Color);
 121 VOID egFillImageArea(IN OUT EG_IMAGE *CompImage,
 122                      IN UINTN AreaPosX, IN UINTN AreaPosY,
 123                      IN UINTN AreaWidth, IN UINTN AreaHeight,
 124                      IN EG_PIXEL *Color);
 125 VOID egComposeImage(IN OUT EG_IMAGE *CompImage, IN EG_IMAGE *TopImage, IN UINTN PosX, IN UINTN PosY);
 126
 127 UINTN egGetFontHeight(VOID);
 128 UINTN egGetFontCellWidth(VOID);
 129 UINTN egComputeTextWidth(IN CHAR16 *Text);
 130 VOID egMeasureText(IN CHAR16 *Text, OUT UINTN *Width, OUT UINTN *Height);
 131 VOID egRenderText(IN CHAR16 *Text, IN OUT EG_IMAGE *CompImage, IN UINTN PosX, IN UINTN PosY, IN UINT8 BGBrightness);
 132 VOID egLoadFont(IN CHAR16 *Filename);
 133
 134 VOID egClearScreen(IN EG_PIXEL *Color);
 135 VOID egDrawImage(IN EG_IMAGE *Image, IN UINTN ScreenPosX, IN UINTN ScreenPosY);
 136 VOID egDrawImageWithTransparency(EG_IMAGE *Image, EG_IMAGE *BadgeImage, UINTN XPos, UINTN YPos, UINTN Width, UINTN Height);
 137 VOID egDrawImageArea(IN EG_IMAGE *Image,
 138                      IN UINTN AreaPosX, IN UINTN AreaPosY,
 139                      IN UINTN AreaWidth, IN UINTN AreaHeight,
 140                      IN UINTN ScreenPosX, IN UINTN ScreenPosY);
 141 VOID egDisplayMessage(IN CHAR16 *Text, EG_PIXEL *BGColor);
 142 EG_IMAGE * egCopyScreen(VOID);
 143 VOID egScreenShot(VOID);
 144 BOOLEAN egSetTextMode(UINT32 RequestedMode);
 145
 146 EG_IMAGE * egDecodePNG(IN UINT8 *FileData, IN UINTN FileDataLength, IN UINTN IconSize, IN BOOLEAN WantAlpha);
 147
 148 #endif /* __LIBEG_LIBEG_H__ */
 149
 150 /* EOF */