| 1 |
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| 2 | #define INCL_OS2MM
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| 3 | #define INCL_MMIOOS2
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| 4 | #define INCL_GPI
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| 5 |
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| 6 | #include <os2.h>
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| 7 | #include "os2me.h"
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| 8 | #include "common.h"
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| 9 | #include "mmres.h"
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| 10 |
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| 11 | extern HAB globalHab;
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| 12 | extern BITMAPINFOHEADER2 bmpInfoHeader2;
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| 13 | extern HBITMAP hBitmap;
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| 14 |
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| 15 | void showImageControls(HWND hwnd, BOOL bShow)
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| 16 | {
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| 17 | /* Preview area */
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| 18 | WinShowWindow(WinWindowFromID(hwnd, IDSR_IMGPREVIEW), bShow);
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| 19 | /* Group box */
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| 20 | WinShowWindow(WinWindowFromID(hwnd, IDGB_PREVIEW), bShow);
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| 21 | }
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| 22 |
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| 23 | VOID DrawBitmap ( HWND hwnd )
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| 24 | {
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| 25 | SWP swp;
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| 26 | POINTL aptl[4];
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| 27 | HPS hps;
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| 28 | BOOL bReturnCode;
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| 29 | ULONG ulHeight;
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| 30 | ULONG ulWidth;
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| 31 | RECTL rectl;
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| 32 |
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| 33 | hps = WinBeginPaint ( hwnd,
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| 34 | 0,
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| 35 | NULL);
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| 36 | /*
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| 37 | * Get position of image frame
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| 38 | */
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| 39 | bReturnCode = WinQueryWindowPos ( hwnd, &swp);
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| 40 |
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| 41 | WinQueryWindowRect(hwnd, &rectl);
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| 42 | WinFillRect(hps, &rectl, CLR_WHITE);
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| 43 | /* Center image */
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| 44 | ulHeight = bmpInfoHeader2.cy;
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| 45 | ulWidth = bmpInfoHeader2.cx;
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| 46 | if(ulWidth <=swp.cx && ulHeight <= swp.cy)
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| 47 | {
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| 48 | aptl[0].x=(swp.cx-ulWidth)/2;
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| 49 | aptl[1].x=aptl[0].x+ulWidth;
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| 50 |
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| 51 | aptl[0].y=(swp.cy-ulHeight)/2;
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| 52 | aptl[1].y=aptl[0].y+ulHeight;
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| 53 | }
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| 54 | else {
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| 55 | float fWidth, fHeight, fRes;
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| 56 |
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| 57 | fWidth=(float)swp.cx/(float)ulWidth;
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| 58 | fHeight=(float)swp.cy/(float)ulHeight;
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| 59 | fRes=( fWidth>fHeight ? fHeight : fWidth);
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| 60 |
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| 61 |
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| 62 | aptl[0].x=(swp.cx-ulWidth*fRes)/2;
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| 63 | aptl[1].x=aptl[0].x+ulWidth*fRes;
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| 64 |
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| 65 | aptl[0].y=(swp.cy-ulHeight*fRes)/2;
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| 66 | aptl[1].y=aptl[0].y+ulHeight*fRes;
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| 67 | }
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| 68 |
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| 69 | aptl[2].x = 0; // source lower left
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| 70 | aptl[2].y = 0;
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| 71 |
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| 72 | aptl[3].x = ulWidth; // source upper right
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| 73 | aptl[3].y = ulHeight;
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| 74 |
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| 75 | /*
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| 76 | * Call GpiBitBlt and supply 4 aptl structures. This tells
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| 77 | * it to stretch or compress the bitmap depending on what is
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| 78 | * in the aptl structures. See above lines for their current
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| 79 | * settings.
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| 80 | */
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| 81 |
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| 82 | WinDrawBitmap(hps, hBitmap, NULLHANDLE, (PPOINTL)aptl, 0, 0, DBM_NORMAL|DBM_STRETCH);
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| 83 |
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| 84 | #if 0
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| 85 | aptl[0].x=0;
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| 86 | aptl[0].y=0;
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| 87 | //aptl[1].x=100;
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| 88 | //aptl[1].y=100;
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| 89 | // WinDrawBitmap(hps, hBitmap, NULLHANDLE, (PPOINTL)aptl, 0, 0, DBM_NORMAL/*|DBM_STRETCH*/);
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| 90 | #endif
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| 91 | bReturnCode = WinEndPaint (hps);
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| 92 | }
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| 93 |
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| 94 |
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| 95 |
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| 96 |
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| 97 | MRESULT EXPENTRY bmpPreviewProc(HWND hwnd, ULONG msg, MPARAM mp1, MPARAM mp2)
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| 98 | {
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| 99 |
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| 100 | switch (msg)
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| 101 | {
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| 102 | case WM_PAINT:
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| 103 | {
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| 104 | if (!WinIsWindowVisible(hwnd))
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| 105 | {
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| 106 | return((MRESULT)NULL);
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| 107 | }
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| 108 | DrawBitmap(hwnd);
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| 109 | return MRTRUE;
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| 110 | }
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| 111 | default:
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| 112 | break;
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| 113 | }
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| 114 | return WinDefWindowProc( hwnd, msg, mp1, mp2);
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| 115 | }
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| 116 |
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| 117 |
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| 118 | /*
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| 119 | Load an image file using IO-Procs
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| 120 | */
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| 121 | HBITMAP loadBitmap ( PSZ pszFileName, PBITMAPINFOHEADER2 pBMPInfoHeader2)
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| 122 | {
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| 123 | HBITMAP hbm;
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| 124 | MMIOINFO mmioinfo;
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| 125 | MMFORMATINFO mmFormatInfo;
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| 126 | HMMIO hmmio;
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| 127 | ULONG ulImageHeaderLength;
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| 128 | MMIMAGEHEADER mmImgHdr;
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| 129 | ULONG ulBytesRead;
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| 130 | ULONG dwNumRowBytes;
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| 131 | PBYTE pRowBuffer;
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| 132 | ULONG dwRowCount;
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| 133 | SIZEL ImageSize;
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| 134 | ULONG dwHeight, dwWidth;
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| 135 | SHORT wBitCount;
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| 136 | FOURCC fccStorageSystem;
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| 137 | ULONG dwPadBytes;
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| 138 | ULONG dwRowBits;
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| 139 | ULONG ulReturnCode;
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| 140 | ULONG dwReturnCode;
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| 141 | HBITMAP hbReturnCode;
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| 142 | LONG lReturnCode;
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| 143 | FOURCC fccIOProc;
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| 144 | HDC hdc;
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| 145 | HPS hps;
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| 146 |
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| 147 |
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| 148 | ulReturnCode = mmioIdentifyFile ( pszFileName,
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| 149 | 0L,
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| 150 | &mmFormatInfo,
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| 151 | &fccStorageSystem,
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| 152 | 0L,
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| 153 | 0L);
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| 154 | /*
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| 155 | * If this file was NOT identified, then this function won't
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| 156 | * work, so return an error by indicating an empty bitmap.
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| 157 | */
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| 158 | if ( ulReturnCode == MMIO_ERROR )
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| 159 | {
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| 160 | // showMsgBox(IDSTR_CWIMAGETITLE, IDSTR_NOIMGIOPROCERROR, queryModuleHandle());
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| 161 | return (0L);
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| 162 | }
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| 163 |
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| 164 | /*
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| 165 | * If mmioIdentifyFile did not find a custom-written IO proc which
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| 166 | * can understand the image file, then it will return the DOS IO Proc
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| 167 | * info because the image file IS a DOS file.
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| 168 | */
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| 169 | if( mmFormatInfo.fccIOProc == FOURCC_DOS )
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| 170 | {
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| 171 | // showMsgBox(IDSTR_CWIMAGETITLE, IDSTR_NOIMGIOPROCERROR, queryModuleHandle());
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| 172 | return ( 0L );
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| 173 | }
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| 174 | /*
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| 175 | * Ensure this is an IMAGE IOproc, and that it can read
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| 176 | * translated data
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| 177 | */
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| 178 | if ( (mmFormatInfo.ulMediaType != MMIO_MEDIATYPE_IMAGE) ||
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| 179 | ((mmFormatInfo.ulFlags & MMIO_CANREADTRANSLATED) == 0) )
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| 180 | {
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| 181 | // showMsgBox(IDSTR_CWIMAGETITLE, IDSTR_NOIMGIOPROCERROR, queryModuleHandle());
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| 182 | return (0L);
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| 183 | }
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| 184 | else
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| 185 | {
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| 186 | fccIOProc = mmFormatInfo.fccIOProc;
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| 187 | }
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| 188 |
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| 189 | /* Clear out and initialize mminfo structure */
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| 190 | memset ( &mmioinfo, 0L, sizeof ( MMIOINFO ) );
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| 191 | mmioinfo.fccIOProc = fccIOProc;
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| 192 | mmioinfo.ulTranslate = MMIO_TRANSLATEHEADER | MMIO_TRANSLATEDATA;
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| 193 | hmmio = mmioOpen ( (PSZ) pszFileName,
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| 194 | &mmioinfo,
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| 195 | MMIO_READ | MMIO_DENYWRITE | MMIO_NOIDENTIFY );
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| 196 | if ( ! hmmio )
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| 197 | {
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| 198 | // If file could not be opened, return with error
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| 199 | // showMsgBox(IDSTR_CWIMAGETITLE, IDSTR_OPENFILEERROR, queryModuleHandle());
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| 200 | return (0L);
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| 201 | }
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| 202 |
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| 203 |
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| 204 | dwReturnCode = mmioQueryHeaderLength ( hmmio,
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| 205 | (PLONG)&ulImageHeaderLength,
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| 206 | 0L,
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| 207 | 0L);
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| 208 | if ( ulImageHeaderLength != sizeof ( MMIMAGEHEADER ) )
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| 209 | {
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| 210 | /* We have a problem.....possibly incompatible versions */
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| 211 | ulReturnCode = mmioClose (hmmio, 0L);
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| 212 | // showMsgBox(IDSTR_CWIMAGETITLE, IDSTR_NOIMGIOPROCERROR);
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| 213 | return (0L);
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| 214 | }
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| 215 |
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| 216 | ulReturnCode = mmioGetHeader ( hmmio,
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| 217 | &mmImgHdr,
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| 218 | (LONG) sizeof ( MMIMAGEHEADER ),
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| 219 | (PLONG)&ulBytesRead,
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| 220 | 0L,
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| 221 | 0L);
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| 222 |
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| 223 | if ( ulReturnCode != MMIO_SUCCESS )
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| 224 | {
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| 225 | /* Header unavailable */
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| 226 | ulReturnCode = mmioClose (hmmio, 0L);
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| 227 | return (0L);
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| 228 | }
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| 229 |
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| 230 | /*!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!*/
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| 231 | *pBMPInfoHeader2=mmImgHdr.mmXDIBHeader.BMPInfoHeader2;
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| 232 |
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| 233 | /*
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| 234 | * Determine the number of bytes required, per row.
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| 235 | * PLANES MUST ALWAYS BE = 1
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| 236 | */
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| 237 | dwHeight = mmImgHdr.mmXDIBHeader.BMPInfoHeader2.cy;
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| 238 | dwWidth = mmImgHdr.mmXDIBHeader.BMPInfoHeader2.cx;
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| 239 | wBitCount = mmImgHdr.mmXDIBHeader.BMPInfoHeader2.cBitCount;
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| 240 | dwRowBits = dwWidth * mmImgHdr.mmXDIBHeader.BMPInfoHeader2.cBitCount;
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| 241 | dwNumRowBytes = dwRowBits >> 3;
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| 242 |
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| 243 | /*
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| 244 | * Account for odd bits used in 1bpp or 4bpp images that are
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| 245 | * NOT on byte boundaries.
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| 246 | */
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| 247 | if ( dwRowBits % 8 )
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| 248 | {
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| 249 | dwNumRowBytes++;
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| 250 | }
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| 251 | /*
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| 252 | * Ensure the row length in bytes accounts for byte padding.
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| 253 | * All bitmap data rows must are aligned on LONG/4-BYTE boundaries.
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| 254 | * The data FROM an IOProc should always appear in this form.
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| 255 | */
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| 256 | dwPadBytes = ( dwNumRowBytes % 4 );
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| 257 | if ( dwPadBytes )
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| 258 | {
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| 259 | dwNumRowBytes += 4 - dwPadBytes;
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| 260 | }
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| 261 |
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| 262 | /* Allocate space for ONE row of pels */
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| 263 | if ( DosAllocMem( (PPVOID)&pRowBuffer,
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| 264 | (ULONG)dwNumRowBytes,
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| 265 | fALLOC))
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| 266 | {
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| 267 | ulReturnCode = mmioClose (hmmio, 0L);
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| 268 | // showMsgBox(IDSTR_CWIMAGETITLE, IDSTR_NOMEMERROR, queryModuleHandle());
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| 269 | return(0L);
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| 270 | }
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| 271 |
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| 272 | /* Create a device context */
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| 273 | hdc=DevOpenDC(globalHab, OD_MEMORY,"*",0L, NULL, NULLHANDLE);
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| 274 | if(hdc==NULLHANDLE)
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| 275 | {
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| 276 | DosFreeMem(pRowBuffer);
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| 277 | mmioClose (hmmio, 0L);
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| 278 | return(0L);
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| 279 | }
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| 280 |
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| 281 |
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| 282 | // ***************************************************
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| 283 | // Create a memory presentation space that includes
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| 284 | // the memory device context obtained above.
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| 285 | // ***************************************************
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| 286 |
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| 287 | ImageSize.cx = dwWidth;
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| 288 | ImageSize.cy = dwHeight;
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| 289 |
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| 290 | hps = GpiCreatePS ( globalHab,
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| 291 | hdc,
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| 292 | &ImageSize,
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| 293 | PU_PELS | GPIT_NORMAL | GPIA_ASSOC );
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| 294 | // PU_PELS | GPIF_DEFAULT | GPIT_MICRO | GPIA_ASSOC );
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| 295 | if ( !hps )
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| 296 | {
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| 297 | #ifdef DEBUG
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| 298 | WinMessageBox( HWND_DESKTOP, HWND_DESKTOP,
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| 299 | "No HPS...",
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| 300 | "Open Image File",
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| 301 | (HMODULE) NULL,
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| 302 | (ULONG) MB_OK | MB_MOVEABLE |
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| 303 | MB_ERROR );
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| 304 | #endif
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| 305 | DevCloseDC(hdc);
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| 306 | DosFreeMem(pRowBuffer);
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| 307 | mmioClose (hmmio, 0L);
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| 308 | return(0L);
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| 309 | }
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| 310 |
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| 311 | // GpiSelectPalette(hps, NULLHANDLE);
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| 312 | // ***************************************************
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| 313 | // Create an uninitialized bitmap. This is where we
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| 314 | // will put all of the bits once we read them in.
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| 315 | // ***************************************************
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| 316 | hbm = GpiCreateBitmap ( hps,
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| 317 | pBMPInfoHeader2,
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| 318 | 0L,
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| 319 | NULL,
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| 320 | NULL);
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| 321 |
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| 322 | if ( !hbm )
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| 323 | {
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| 324 | #ifdef DEBUG
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| 325 | WinMessageBox( HWND_DESKTOP, HWND_DESKTOP,
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| 326 | "No HBITMAP...",
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| 327 | "Open Image File",
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| 328 | (HMODULE) NULL,
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| 329 | (ULONG) MB_OK | MB_MOVEABLE |
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| 330 | MB_ERROR );
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| 331 | #endif
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| 332 | GpiDestroyPS(hps);
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| 333 | DevCloseDC(hdc);
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| 334 | DosFreeMem(pRowBuffer);
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| 335 | ulReturnCode = mmioClose (hmmio, 0L);
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| 336 | return(0L);
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| 337 | }
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| 338 |
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| 339 | // ***************************************************
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| 340 | // Select the bitmap into the memory device context.
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| 341 | // ***************************************************
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| 342 | hbReturnCode = GpiSetBitmap ( hps,
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| 343 | hbm );
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| 344 |
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| 345 | //***************************************************************
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| 346 | // LOAD THE BITMAP DATA FROM THE FILE
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| 347 | // One line at a time, starting from the BOTTOM
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| 348 | //*************************************************************** */
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| 349 |
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| 350 | for ( dwRowCount = 0; dwRowCount < dwHeight; dwRowCount++ )
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| 351 | {
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| 352 | ulBytesRead = (ULONG) mmioRead ( hmmio,
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| 353 | pRowBuffer,
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| 354 | dwNumRowBytes );
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| 355 | if ( !ulBytesRead )
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| 356 | {
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| 357 | break;
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| 358 | }
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| 359 | /*
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| 360 | * Allow context switching while previewing.. Couldn't get
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| 361 | * it to work. Perhaps will get to it when time is available...
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| 362 | */
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| 363 | lReturnCode = GpiSetBitmapBits ( hps,
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| 364 | (LONG) dwRowCount,
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| 365 | (LONG) 1,
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| 366 | (PBYTE) pRowBuffer,
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| 367 | (PBITMAPINFO2) pBMPInfoHeader2);
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| 368 | }
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| 369 |
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| 370 | /* Clean up */
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| 371 | hbReturnCode = GpiSetBitmap ( hps,
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| 372 | NULLHANDLE );
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| 373 | ulReturnCode = mmioClose (hmmio, 0L);
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| 374 | DosFreeMem(pRowBuffer);
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| 375 | GpiDestroyPS(hps);
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| 376 | DevCloseDC(hdc);
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| 377 |
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| 378 | return(hbm);
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| 379 | }
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