+++ /dev/null
-// ----------------------------------------------------------------------------
-// BitMapObject.c
-// ----------------------------------------------------------------------------
-
-#include "BitMapObject.h"
-
-// static void ConvertToVBPalette();
-static long Get_ByteWidth();
-static long Get_LineLength();
-static void ReDimArrays();
-
-// --- VERSION 1.0 CLASS
-// --- BEGIN
-// --- MultiUse = -1 'True // True
-// --- Persistable = 0 'NotPersistable // NotPersistable
-// --- DataBindingBehavior = 0 'vbNone // vbNone
-// --- DataSourceBehavior = 0 'vbNone // vbNone
-// --- MTSTransactionMode = 0 'NotAnMTSObject // NotAnMTSObject
-// --- END
-
-// static char *VB_Name = "BitMapObject";
-// static boolean VB_GlobalNameSpace = False;
-// static boolean VB_Creatable = True;
-// static boolean VB_PredeclaredId = False;
-// static boolean VB_Exposed = False;
-
-// --- Option Explicit
-
-// info von http://web.usxchange.net/elmo/bmp.htm
-
-// A BMP file consists of the four following parts:
-//
-// 1.BITMAPFILEHEADER
-// 2.BITMAPINFOHEADER
-// 3.A color table of RGBQUAD structures (1, 4 & 8 bit only)
-// 4.An array of bytes for the actual image data
-
-// 1.BITMAPFILEHEADER
-// 1.bfType
-// Declared an unsigned integer. But, this is just to reserve space for 2 bytes.
-// The 2 bytes must be the 2 characters BM to indicate a BitMap file.
-// 2.bfSize
-// Total size of file in bytes.
-// 3.bfReserved1
-// Always zero (ignore).
-// 4.bfReserved2
-// Always zero (ignore).
-// 5.bfOffBits
-// Specifies the byte offset from the BITMAPFILEHEADER structure to the actual bitmap data in the file.
-// ::: #ifndef HAS_BitmapFileHeaderType
-// ::: typedef struct // { /* bmfh */
-// ::: {
-// ::: byte bfTypeB;
-// ::: byte bfTypeM;
-// ::: long bfSize;
-// ::: int bfReserved1;
-// ::: int bfReserved2;
-// ::: long bfOffBits;
-// ::: } BitmapFileHeaderType;
-// ::: #define HAS_BitmapFileHeaderType
-// ::: #endif
-
-// 2.BITMAPINFOHEADER
-// 1.biSize
-// Size of BITMAPINFOHEADER structure (should always be 40).
-// 2.biWidth
-// Width of image in pixels.
-// 3.biHeight
-// Height of image in pixels.
-// 4.biPlanes
-// Always one (ignore).
-// 5.biBitCount
-// Specifies the number of bits per pixel. This value must be 1, 4, 8, or 24.
-// 6.biCompression
-// Specifies the type of compression.
-// 1.BI_RGB No compression.
-// 2.BI_RLE8 8 bit RLE
-// 3.BI_RLE4 4 bit RLE
-// 7.biSizeImage
-// Specifies the size, in bytes, of the image data. May be zero if the bitmap is in the BI_RGB format.
-// 8.biXPelsPerMeter
-// Ignore.
-// 9.biYPelsPerMeter
-// Ignore.
-// 10.biClrUsed
-// Specifies the number of color indices in the color table. Zero indicaes the bitmap uses the maximum number of colors corresponding to the value of the
-// biBitCount member e.g. 8 bit -> 256 colors.
-//
-// The maximum number of colors = 2N. Where N = biBitCount. 2N is the same as 1 << N. The same as you can get powers of 10 by shifting the decimal point
-// in a decimal number, only it is binary.
-// 11.biClrImportant
-// Ignore.
-// ::: #ifndef HAS_BitmapInfoHeaderType
-// ::: typedef struct // { /* bmih */
-// ::: {
-// ::: long biSize;
-// ::: long biWidth;
-// ::: long biHeight;
-// ::: int biPlanes;
-// ::: int biBitCount;
-// ::: long biCompression;
-// ::: long biSizeImage;
-// ::: long biXPelsPerMeter;
-// ::: long biYPelsPerMeter;
-// ::: long biClrUsed;
-// ::: long biClrImportant;
-// ::: } BitmapInfoHeaderType;
-// ::: #define HAS_BitmapInfoHeaderType
-// ::: #endif
-
-// 3.A color table of RGBQUAD structures (1, 4 & 8 bit only)
-// RGBQUAD structure is self explanatory.
-// ::: #ifndef HAS_RGBQUADType
-// ::: typedef struct // { /* rgbq */
-// ::: {
-// ::: byte rgbBlue;
-// ::: byte rgbGreen;
-// ::: byte rgbRed;
-// ::: byte rgbReserved;
-// ::: } RGBQUADType;
-// ::: #define HAS_RGBQUADType
-// ::: #endif
-
-RGBQUADType *ColorTable;
-long *VBPalette;
-
-// 4.An array of bytes for the actual image data
-// Bits per pixel & compression determined by biBitCount & biCompression.
-
-byte *ImageDataBytes;
-
-// ######################################################################################################
-
-BitmapFileHeaderType BMFH;
-BitmapInfoHeaderType BMIH;
-
-static long Get_LineLength()
-{
- static long LineLength;
-
- LineLength = 4 * (((Get_ByteWidth() - 1) / 4) + 1);
-
- return LineLength;
-}
-
-static long Get_ByteWidth()
-{
- static long ByteWidth;
-
- ByteWidth = BMIH.biWidth * BMIH.biBitCount / 8;
-
- return ByteWidth;
-}
-
-void BitMapObject_CreateAtSize(long XPixels, long YPixels, long BitsPerPixel)
-{
- {
- BMIH.biWidth = XPixels;
- BMIH.biHeight = YPixels;
- BMIH.biSize = 40;
- BMIH.biBitCount = BitsPerPixel;
- BMIH.biClrUsed = (1 << BMIH.biBitCount);
- BMIH.biPlanes = 1;
- BMIH.biClrImportant = BMIH.biClrUsed;
- BMIH.biCompression = 0;
- }
- {
- BMFH.bfTypeB = 0x42; // B'
- BMFH.bfTypeM = 0x4D; // M'
- }
- ReDimArrays();
-}
-
-#if 0
-
-void BitMapObject_CreateFromFile(char *Path)
-{
- long FNum;
-
- FNum = FreeFile();
- if (! FileExists(Path))
- return;
-
- if (FileLen(Path) < (Len(BMFH) + Len(BMIH)))
- return;
-
- FNum = fopen(Path, "rb");
- FILE_GET(FNum, -1, &BMFH, sizeof(BMFH));
- FILE_GET(FNum, -1, &BMIH, sizeof(BMIH));
- ReDimArrays();
- {
- if (BMIH.biCompression != 0)
- {
- Err.Raise(600, "BitMapObject", "Cannot read compressed BMP files");
- fclose(FNum);
- return;
- }
-
- if (BMIH.biBitCount < 9)
- {
- FILE_GET(FNum, -1, &ColorTable, sizeof(ColorTable));
- }
-
- }
- FILE_GET(FNum, 1 + BMFH.bfOffBits, &ImageDataBytes, sizeof(ImageDataBytes));
- fclose(FNum);
- if (BMIH.biBitCount < 9)
- ConvertToVBPalette();
-}
-
-void BitMapObject_SaveToFile(char *Path)
-{
- FILE *FNum;
-
- BMFH.bfOffBits = Len(BMFH) + Len(BMIH);
- if (BMIH.biBitCount < 9)
- BMFH.bfOffBits = BMFH.bfOffBits + ((1 << BMIH.biBitCount)) * Len(ColorTable[0]);
-
- BMIH.biSizeImage = Get_LineLength() * BMIH.biHeight;
- BMFH.bfSize = BMFH.bfOffBits + BMIH.biSizeImage;
- // FNum = FreeFile();
- FNum = fopen(Path, "wb");
- FILE_PUT(FNum, -1, &BMFH, sizeof(BMFH));
- FILE_PUT(FNum, -1, &BMIH, sizeof(BMIH));
- if (BMIH.biBitCount < 9)
- {
- FILE_PUT(FNum, -1, &ColorTable, sizeof(ColorTable));
- }
-
- FILE_PUT(FNum, -1, &ImageDataBytes, sizeof(ImageDataBytes));
- fclose(FNum);
-}
-
-static void ConvertToVBPalette()
-{
- long ColMax, i;
-
- ColMax = UBound(ColorTable);
- for (i = 0; i <= ColMax; i++)
- {
- {
- VBPalette[i] = RGB(ColorTable[i].rgbRed, ColorTable[i].rgbGreen, ColorTable[i].rgbBlue);
- }
- }
-}
-
-#endif
-
-static void ReDimArrays()
-{
- {
- if (BMIH.biBitCount < 9)
- {
- BMIH.biClrUsed = (1 << BMIH.biBitCount);
- ColorTable = REDIM_1D(sizeof(RGBQUADType), 0, BMIH.biClrUsed - 1);
- VBPalette = REDIM_1D(sizeof(long), 0, BMIH.biClrUsed - 1);
- }
-
- if (0 < Get_LineLength() && 0 < BMIH.biHeight)
- {
- ImageDataBytes = REDIM_2D(sizeof(byte), 0, Get_LineLength() - 1, 0, BMIH.biHeight - 1);
- }
-
- }
-}
-
-long BitMapObject_Get_Palette(long Index)
-{
- long Palette;
-
- Palette = VBPalette[Index];
-
- return Palette;
-}
-
-void BitMapObject_Let_Palette(long Index, long NewVal)
-{
- VBPalette[Index] = NewVal & 0xFFFFFF;
- {
- ColorTable[Index].rgbRed = (NewVal & 0xFF) / 0x1;
- ColorTable[Index].rgbGreen = (NewVal & 0xFF00) / 0x100;
- ColorTable[Index].rgbBlue = (NewVal & 0xFF0000) / 0x10000;
- }
-}
-
-long BitMapObject_Get_ColorsUsed()
-{
- long ColorsUsed;
-
- if (BMIH.biBitCount < 9)
- {
- ColorsUsed = (1 << BMIH.biBitCount);
- }
- else
- {
- ColorsUsed = 0;
- }
-
- return ColorsUsed;
-}
-
-#if 0
-
-long BitMapObject_Get_ColorIndex(long X, long Y)
-{
- long ColorIndex;
-
- long ColIndex, NewX, BitPos, nY;
-
- if (8 < BMIH.biBitCount)
- {
- Err.Raise(600, "BitmapObject", "I have ! Palette in this ColorDepthMode");
- ColorIndex = -1;
- return ColorIndex;
- }
-
- nY = BMIH.biHeight - 1 - Y;
- switch (BMIH.biBitCount)
- {
- case 1:
- ColIndex = ImageDataBytes[X / 8, nY];
- BitPos = 7 - (X % 8);
- NewX = (1 << BitPos);
- if ((NewX && ColIndex) == 0)
- {
- ColorIndex = 0;
- }
- else
- {
- ColorIndex = 1;
- }
-
- break;
-
- case 4:
- ColIndex = ImageDataBytes[X / 2, nY];
- if ((X % 2) == 0)
- {
- ColorIndex = (ColIndex & 0xF0) / 0x10;
- }
- else
- {
- ColorIndex = (ColIndex & 0xF);
- }
-
- break;
-
- case 8:
- ColorIndex = ImageDataBytes[X, nY];
- break;
-
- default:
- Err.Raise(600, "BitmapObject", "Invalid bpx value");
- break;
- }
-
- return ColorIndex;
-}
-
-void BitMapObject_Let_ColorIndex(long X, long Y, long ColorIndex)
-{
- long ColIndex, ByteVal, NewX, BitPos, nY;
-
- if (8 < BMIH.biBitCount)
- {
- Err.Raise(600, "BitmapObject", "I have ! Palette in this ColorDepthMode");
- return;
- }
-
- nY = BMIH.biHeight - 1 - Y;
- switch (BMIH.biBitCount)
- {
- case 1:
- ByteVal = ImageDataBytes[X / 8, nY];
- BitPos = 7 - (X % 8);
- NewX = (1 << BitPos);
- ColIndex = ColorIndex * NewX;
- if (ColIndex == 0)
- {
- ByteVal = (ByteVal & (! NewX));
- }
- else
- {
- ByteVal = (ByteVal | NewX);
- }
-
- ImageDataBytes[X / 8, nY] = ByteVal;
- break;
-
- case 4:
- ByteVal = ImageDataBytes[X / 2, nY];
- if ((X % 2) == 0)
- {
- ByteVal = (ByteVal & 0xF) + ColorIndex * 0x10;
- }
- else
- {
- ByteVal = (ByteVal & 0xF0) + ColorIndex;
- }
-
- ImageDataBytes[X / 2, nY] = ByteVal;
- break;
-
- case 8:
- ImageDataBytes[X, nY] = ColorIndex;
- break;
-
- case 24:
- Err.Raise(600, "BitmapObject", "Invalid bpx value");
- break;
- }
-}
-
-long BitMapObject_Get_Point(long X, long Y)
-{
- long Point;
-
- long ColIndex, NewX, BitPos, nY;
-
- nY = BMIH.biHeight - 1 - Y;
- switch (BMIH.biBitCount)
- {
- case 1:
- ColIndex = ImageDataBytes[X / 8, nY];
- BitPos = 7 - (X % 8);
- NewX = (1 << BitPos);
- if ((NewX && ColIndex) == 0)
- {
- ColIndex = 0;
- }
- else
- {
- ColIndex = 1;
- }
-
- Point = VBPalette[ColIndex];
- break;
-
- case 4:
- ColIndex = ImageDataBytes[X / 2, nY];
- if ((X % 2) == 0)
- {
- ColIndex = (ColIndex & 0xF0) / 0x10;
- }
- else
- {
- ColIndex = (ColIndex & 0xF);
- }
-
- Point = VBPalette[ColIndex];
- break;
-
- case 8:
- ColIndex = ImageDataBytes[X, nY];
- Point = VBPalette[ColIndex];
- break;
-
- case 24:
- NewX = 3 * X;
- Point = ImageDataBytes[NewX, nY] * 0x10000;
- Point = Point + ImageDataBytes[NewX + 1, nY] * 0x100;
- Point = Point + ImageDataBytes[NewX + 2, nY];
- break;
-
- default:
- Err.Raise(600, "BitmapObject", "Invalid bpx value");
- break;
- }
-
- return Point;
-}
-
-void BitMapObject_Let_Point(long X, long Y, long NewColor)
-{
- long ColIndex, ByteVal, NewX, BitPos, nY;
-
- nY = BMIH.biHeight - 1 - Y;
- switch (BMIH.biBitCount)
- {
- case 1:
- ColIndex = GetPaletteIndex(NewColor);
- ByteVal = ImageDataBytes[X / 8][nY];
- BitPos = 7 - (X % 8);
- NewX = (1 << BitPos);
- ColIndex = ColIndex * NewX;
- if (ColIndex == 0)
- {
- ByteVal = (ByteVal & (! NewX));
- }
- else
- {
- ByteVal = (ByteVal | NewX);
- }
-
- ImageDataBytes[X / 8][nY] = ByteVal;
- break;
-
- case 4:
- ColIndex = GetPaletteIndex(NewColor);
- ByteVal = ImageDataBytes[X / 2][nY];
- if ((X % 2) == 0)
- {
- ByteVal = (ByteVal & 0xF) + ColIndex * 0x10;
- }
- else
- {
- ByteVal = (ByteVal & 0xF0) + ColIndex;
- }
-
- ImageDataBytes[X / 2][nY] = ByteVal;
- break;
-
- case 8:
- ImageDataBytes[X][nY] = GetPaletteIndex(NewColor);
- break;
-
- case 24:
- NewX = 3 * X;
- ImageDataBytes[NewX][nY] = (NewColor & 0xFF0000) / 0x10000; // B
- ImageDataBytes[NewX + 1][nY] = (NewColor & 0xFF00) / 0x100; // G
- ImageDataBytes[NewX + 2][nY] = (NewColor & 0xFF); // R
- break;
-
- default:
- Err.Raise(600, "BitmapObject", "Invalid bpx value");
- break;
- }
-}
-
-int BitMapObject_GetPaletteIndex(long Color)
-{
- int GetPaletteIndex;
-
- long i, ColMax;
-
- ColMax = UBound(VBPalette);
- for (i = 0; i <= ColMax; i++)
- {
- if (VBPalette[i] == Color)
- break;
- }
-
- if (ColMax < i) // Error - Color not in Palette!
- i = -1;
-
- GetPaletteIndex = i;
-
- return GetPaletteIndex;
-}
-
-#endif
-
-long BitMapObject_Get_Width()
-{
- long Width;
-
- Width = BMIH.biWidth;
-
- return Width;
-}
-
-long BitMapObject_Get_Height()
-{
- long Height;
-
- Height = BMIH.biHeight;
-
- return Height;
-}
-
-#if 0
-
-BitMapObject BitMapObject_GetStretchCopy(float StretchVal)
-{
- BitMapObject GetStretchCopy;
-
- long nWidth, nHeight, iX, iY;
-
- // GetStretchCopy = New BitMapObject; // (handle this later, if needed)
- nWidth = StretchVal * BMIH.biWidth;
- nHeight = StretchVal * BMIH.biHeight;
- GetStretchCopy.CreateAtSize(nWidth, nHeight, CLng(BMIH.biBitCount));
- nWidth = nWidth - 1;
- nHeight = nHeight - 1;
- for (iX = 0; iX <= BMIH.biClrUsed - 1; iX++)
- {
- GetStretchCopy.Let_Palette(iX, Palette(iX));
- }
-
- for (iY = 0; iY <= nHeight; iY++)
- {
- for (iX = 0; iX <= nWidth; iX++)
- {
- GetStretchCopy.Let_ColorIndex(iX, iY, ColorIndex((int)(iX / StretchVal), (int)(iY / StretchVal)));
- }
- }
-
- return GetStretchCopy;
-}
-
-#endif
projects / rocksndiamonds.git / blobdiff