| 1 | ; Project name : Menu library |
|---|
| 2 | ; Description : ASM library for menu system. |
|---|
| 3 | ; Contains functions for displaying file dialog. |
|---|
| 4 | |
|---|
| 5 | ;--------------- Equates ----------------------------- |
|---|
| 6 | |
|---|
| 7 | ; Dialog init and return variables. |
|---|
| 8 | ; This is an expanded MSGVARS struct. |
|---|
| 9 | struc FDLGVARS |
|---|
| 10 | .msgVars resb MSGVARS_size |
|---|
| 11 | |
|---|
| 12 | ; Dialog parameters |
|---|
| 13 | .fpFileSrch resb 4 ; Far pointer to file search string |
|---|
| 14 | .wFileCnt resb 2 ; Number of directories and files to display |
|---|
| 15 | .wDrvCnt resb 2 ; Valid drive letter count |
|---|
| 16 | |
|---|
| 17 | ; Return variables for different dialogs |
|---|
| 18 | .fpDTA resb 4 ; Ptr to DTA for selected file |
|---|
| 19 | .fSuccess resb 1 ; Was data inputted successfully by user |
|---|
| 20 | resb 1 ; Alignment |
|---|
| 21 | endstruc |
|---|
| 22 | |
|---|
| 23 | |
|---|
| 24 | ;-------------- Private global variables ------------- |
|---|
| 25 | ; Section containing initialized data |
|---|
| 26 | ;SECTION .data |
|---|
| 27 | |
|---|
| 28 | g_szDir: db "[%S]",STOP |
|---|
| 29 | g_szDrv: db "[%c:]",STOP |
|---|
| 30 | |
|---|
| 31 | |
|---|
| 32 | ;-------------- Public functions --------------------- |
|---|
| 33 | ; Section containing code |
|---|
| 34 | SECTION .text |
|---|
| 35 | |
|---|
| 36 | |
|---|
| 37 | ;-------------------------------------------------------------------- |
|---|
| 38 | ; Displays file dialog. |
|---|
| 39 | ; |
|---|
| 40 | ; MenuFile_ShowDlg |
|---|
| 41 | ; Parameters: |
|---|
| 42 | ; BL: Dialog width with borders included |
|---|
| 43 | ; SS:BP: Ptr to MENUVARS |
|---|
| 44 | ; ES:DI: Ptr to STOP terminated string to display |
|---|
| 45 | ; DS:SI: Ptr to file search string (* and ? wildcards supported) |
|---|
| 46 | ; Returns: |
|---|
| 47 | ; DS:SI: Ptr to selected file name string |
|---|
| 48 | ; CF: Set if user data inputted successfully |
|---|
| 49 | ; Cleared is input cancelled |
|---|
| 50 | ; Corrupts registers: |
|---|
| 51 | ; BX, CX |
|---|
| 52 | ;-------------------------------------------------------------------- |
|---|
| 53 | ALIGN JUMP_ALIGN |
|---|
| 54 | MenuFile_ShowDlg: |
|---|
| 55 | ; Create stack frame |
|---|
| 56 | eENTER FDLGVARS_size, 0 |
|---|
| 57 | sub bp, FDLGVARS_size ; Point to FDLGVARS |
|---|
| 58 | |
|---|
| 59 | ; Initialize menu variables |
|---|
| 60 | mov bh, CNT_SCRN_ROW ; Menu height |
|---|
| 61 | mov [bp+MENUVARS.wSize], bx ; Menu size |
|---|
| 62 | mov [bp+MSGVARS.wStrOff], di ; Store far ptr... |
|---|
| 63 | mov [bp+MSGVARS.wStrSeg], es ; ...to info string to display |
|---|
| 64 | mov [bp+FDLGVARS.fpFileSrch], si ; Store far pointer... |
|---|
| 65 | mov [bp+FDLGVARS.fpFileSrch+2], ds ; ...to file search string |
|---|
| 66 | ;call File_GetValidDrvCnt ; Get drive letter count to CX (drive support broken! Works on DOSBox, not on DOS 6.22) |
|---|
| 67 | xor cx, cx |
|---|
| 68 | mov [bp+FDLGVARS.wDrvCnt], cx |
|---|
| 69 | mov WORD [bp+MENUVARS.fnEvent], MenuFile_Event |
|---|
| 70 | mov [bp+FDLGVARS.fSuccess], cl ; For user cancel |
|---|
| 71 | call MenuMsg_GetLineCnt ; Get Info line count to CX |
|---|
| 72 | xchg cl, ch ; CH=Info lines, CL=Title lines |
|---|
| 73 | mov [bp+MENUVARS.wTopDwnH], cx |
|---|
| 74 | |
|---|
| 75 | ; Enter menu |
|---|
| 76 | mov dx, si ; File search str ptr to DS:DX |
|---|
| 77 | call MenuFile_GetItemCnt ; Get menuitem count to CX |
|---|
| 78 | call MenuCrsr_GetCenter ; Get X and Y coordinates to DX |
|---|
| 79 | xor ax, ax ; Selection timeout (disable) |
|---|
| 80 | xor bx, bx ; Menu flags |
|---|
| 81 | call Menu_Init ; Returns only after dlg closed |
|---|
| 82 | |
|---|
| 83 | ; Return |
|---|
| 84 | mov si, [bp+FDLGVARS.fpDTA] ; Load offset to return DTA |
|---|
| 85 | mov ds, [bp+FDLGVARS.fpDTA+2] ; Load segment to return DTA |
|---|
| 86 | mov bl, [bp+FDLGVARS.fSuccess] ; Load success flag |
|---|
| 87 | add bp, FDLGVARS_size ; Point to old BP |
|---|
| 88 | eLEAVE ; Destroy stack frame |
|---|
| 89 | rcr bl, 1 ; Move success flag to CF |
|---|
| 90 | ret |
|---|
| 91 | |
|---|
| 92 | |
|---|
| 93 | ;-------------- Private functions --------------------- |
|---|
| 94 | |
|---|
| 95 | ;-------------------------------------------------------------------- |
|---|
| 96 | ; File dialog event handler. |
|---|
| 97 | ; |
|---|
| 98 | ; MenuFile_Event |
|---|
| 99 | ; Parameters: |
|---|
| 100 | ; DS:DX: Ptr to file search string (for example *.* or C:\temp\*.txt) |
|---|
| 101 | ; SS:BP: Ptr to FDLGVARS |
|---|
| 102 | ; Returns: |
|---|
| 103 | ; CX: Number of menuitems to display files and drives |
|---|
| 104 | ; Corrupts registers: |
|---|
| 105 | ; AX |
|---|
| 106 | ;-------------------------------------------------------------------- |
|---|
| 107 | ALIGN JUMP_ALIGN |
|---|
| 108 | MenuFile_GetItemCnt: |
|---|
| 109 | call File_FindAndCount ; Get message line count to CX |
|---|
| 110 | mov [bp+FDLGVARS.wFileCnt], cx ; Store file and dir count |
|---|
| 111 | add cx, [bp+FDLGVARS.wDrvCnt] ; Add drive letter count to CX |
|---|
| 112 | ret |
|---|
| 113 | |
|---|
| 114 | |
|---|
| 115 | ;-------------------------------------------------------------------- |
|---|
| 116 | ; Directory, File and Drive rendering functions for menuitems. |
|---|
| 117 | ; Cursor is assumed to be on correct position when this function is called. |
|---|
| 118 | ; |
|---|
| 119 | ; MenuFile_DrawItem |
|---|
| 120 | ; Parameters: |
|---|
| 121 | ; CX: Index of menuitem to draw |
|---|
| 122 | ; SS:BP: Ptr to FDLGVARS |
|---|
| 123 | ; Returns: |
|---|
| 124 | ; Nothing |
|---|
| 125 | ; Corrupts registers: |
|---|
| 126 | ; AX, BX, CX, DX |
|---|
| 127 | ;-------------------------------------------------------------------- |
|---|
| 128 | ALIGN JUMP_ALIGN |
|---|
| 129 | MenuFile_DrawItem: |
|---|
| 130 | push ds |
|---|
| 131 | mov dx, [bp+FDLGVARS.fpFileSrch] ; Load ptr to file search str |
|---|
| 132 | mov ds, [bp+FDLGVARS.fpFileSrch+2] |
|---|
| 133 | call File_GetDTA ; Get DTA ptr to DS:BX |
|---|
| 134 | jc .DrawDrv ; No dir or file, draw drive |
|---|
| 135 | test BYTE [bx+DTA.bFileAttr], FLG_FATTR_DIR |
|---|
| 136 | jnz .DrawDir |
|---|
| 137 | |
|---|
| 138 | ;-------------------------------------------------------------------- |
|---|
| 139 | ; Directory, File and Drive rendering for menuitems. |
|---|
| 140 | ; Cursor is assumed to be on correct position. |
|---|
| 141 | ; |
|---|
| 142 | ; .DrawFile Draws file menuitem |
|---|
| 143 | ; .DrawDir Draws directory menuitem |
|---|
| 144 | ; .DrawDrv Draws drive menuitem |
|---|
| 145 | ; Parameters: |
|---|
| 146 | ; CX: Index of menuitem to draw |
|---|
| 147 | ; DS:BX: Ptr to DTA for menuitem (not for .DrawDrv) |
|---|
| 148 | ; SS:BP: Ptr to FDLGVARS |
|---|
| 149 | ; Returns: |
|---|
| 150 | ; Nothing |
|---|
| 151 | ; Corrupts registers: |
|---|
| 152 | ; AX, BX, CX, DX |
|---|
| 153 | ;-------------------------------------------------------------------- |
|---|
| 154 | .DrawFile: |
|---|
| 155 | lea dx, [bx+DTA.szFile] ; DS:DX now points to filename string |
|---|
| 156 | PRINT_STR |
|---|
| 157 | pop ds |
|---|
| 158 | ret |
|---|
| 159 | ALIGN JUMP_ALIGN |
|---|
| 160 | .DrawDir: |
|---|
| 161 | push si |
|---|
| 162 | lea ax, [bx+DTA.szFile] ; Dir string offset to AX |
|---|
| 163 | push ds ; Push dir string segment |
|---|
| 164 | push ax ; Push dir string offset |
|---|
| 165 | push cs ; Copy CS... |
|---|
| 166 | pop ds ; ...to DS for format string |
|---|
| 167 | mov si, g_szDir ; Format string now in DS:SI |
|---|
| 168 | call Print_Format |
|---|
| 169 | add sp, 4 ; Clean stack variables |
|---|
| 170 | pop si |
|---|
| 171 | pop ds |
|---|
| 172 | ret |
|---|
| 173 | ALIGN JUMP_ALIGN |
|---|
| 174 | .DrawDrv: |
|---|
| 175 | push si |
|---|
| 176 | sub cx, [bp+FDLGVARS.wFileCnt] ; Menuitem to valid drive index |
|---|
| 177 | call File_GetNthValidDrv ; Get letter to AX |
|---|
| 178 | push ax ; Push drive letter |
|---|
| 179 | push cs ; Copy CS... |
|---|
| 180 | pop ds ; ...to DS for format string |
|---|
| 181 | mov si, g_szDrv ; Format string now in DS:SI |
|---|
| 182 | call Print_Format |
|---|
| 183 | add sp, 2 ; Clean stack variables |
|---|
| 184 | pop si |
|---|
| 185 | pop ds |
|---|
| 186 | ret |
|---|
| 187 | |
|---|
| 188 | |
|---|
| 189 | ;-------------------------------------------------------------------- |
|---|
| 190 | ; File dialog event handler. |
|---|
| 191 | ; |
|---|
| 192 | ; MenuFile_Event |
|---|
| 193 | ; Parameters: |
|---|
| 194 | ; BX: Callback event |
|---|
| 195 | ; CX: Selected menuitem index |
|---|
| 196 | ; DX: Event parameter (event specific) |
|---|
| 197 | ; SS:BP: Ptr to FDLGVARS |
|---|
| 198 | ; Returns: |
|---|
| 199 | ; AH: Event specific or unused |
|---|
| 200 | ; AL: 1=Event processed |
|---|
| 201 | ; 0=Event not processed (default action if any) |
|---|
| 202 | ; Corrupts registers: |
|---|
| 203 | ; BX, CX, DX |
|---|
| 204 | ;-------------------------------------------------------------------- |
|---|
| 205 | ALIGN JUMP_ALIGN |
|---|
| 206 | MenuFile_Event: |
|---|
| 207 | cmp bx, EVNT_MNU_UPD ; Above last supported? |
|---|
| 208 | ja .EventNotHandled ; If so, return |
|---|
| 209 | shl bx, 1 ; Shift for word lookup |
|---|
| 210 | jmp [cs:bx+.rgwEventJump] ; Jumpt to handle event |
|---|
| 211 | ALIGN WORD_ALIGN |
|---|
| 212 | .rgwEventJump: |
|---|
| 213 | dw .EventExit ; 0, EVNT_MNU_EXIT |
|---|
| 214 | dw .EventSelChg ; 1, EVNT_MMU_SELCHG |
|---|
| 215 | dw .EventSelSet ; 2, EVNT_MNU_SELSET |
|---|
| 216 | dw .EventKey ; 3, EVNT_MNU_KEY |
|---|
| 217 | dw .EventUpd ; 4, EVNT_MNU_UPD |
|---|
| 218 | |
|---|
| 219 | ; Events that do not require any handling |
|---|
| 220 | ALIGN JUMP_ALIGN |
|---|
| 221 | .EventSelChg: |
|---|
| 222 | .EventKey: |
|---|
| 223 | .EventNotHandled: |
|---|
| 224 | xor ax, ax ; Event not processed |
|---|
| 225 | ret |
|---|
| 226 | ALIGN JUMP_ALIGN |
|---|
| 227 | .EventExit: |
|---|
| 228 | .EventHandled: ; Return point from all handled events |
|---|
| 229 | mov ax, 1 |
|---|
| 230 | ret |
|---|
| 231 | |
|---|
| 232 | |
|---|
| 233 | ;-------------------------------------------------------------------- |
|---|
| 234 | ; EVNT_MNU_SELSET event handler. |
|---|
| 235 | ; |
|---|
| 236 | ; .EventSelSet |
|---|
| 237 | ; Parameters: |
|---|
| 238 | ; CX: Index of menuitem that user selected |
|---|
| 239 | ; SS:BP: Ptr to FDLGVARS |
|---|
| 240 | ;-------------------------------------------------------------------- |
|---|
| 241 | ALIGN JUMP_ALIGN |
|---|
| 242 | .EventSelSet: |
|---|
| 243 | push ds |
|---|
| 244 | cmp cx, [bp+FDLGVARS.wFileCnt] ; Selecting file or dir? |
|---|
| 245 | jae .ChgDrv ; If not, must be drive |
|---|
| 246 | mov dx, [bp+FDLGVARS.fpFileSrch] ; Load ptr to file search str |
|---|
| 247 | mov ds, [bp+FDLGVARS.fpFileSrch+2] |
|---|
| 248 | call File_GetDTA ; Get DTA ptr to DS:BX |
|---|
| 249 | rcl al, 1 ; CF to AL |
|---|
| 250 | test BYTE [bx+DTA.bFileAttr], FLG_FATTR_DIR |
|---|
| 251 | jnz .ChgDir ; If directory, go change |
|---|
| 252 | |
|---|
| 253 | ; File selected, close dialog |
|---|
| 254 | not al ; Invert CF |
|---|
| 255 | mov [bp+FDLGVARS.fSuccess], al ; Store success flag |
|---|
| 256 | mov [bp+FDLGVARS.fpDTA], bx ; Store offset to DTA |
|---|
| 257 | mov [bp+FDLGVARS.fpDTA+2], ds ; Store segment to DTA |
|---|
| 258 | pop ds |
|---|
| 259 | jmp MenuDlg_ExitHandler ; Close dialog |
|---|
| 260 | |
|---|
| 261 | ALIGN JUMP_ALIGN |
|---|
| 262 | .ChgDrv: |
|---|
| 263 | sub cx, [bp+FDLGVARS.wFileCnt] ; Menuitem to drive index |
|---|
| 264 | call File_GetNthValidDrv ; Drv device num to DX |
|---|
| 265 | call File_SetDrive ; Change drive |
|---|
| 266 | jmp .ChangeDone ; Update menu |
|---|
| 267 | ALIGN JUMP_ALIGN |
|---|
| 268 | .ChgDir: |
|---|
| 269 | lea dx, [bx+DTA.szFile] ; Offset to new path |
|---|
| 270 | call File_ChangeDir ; Change directory |
|---|
| 271 | ALIGN JUMP_ALIGN |
|---|
| 272 | .ChangeDone: |
|---|
| 273 | lds dx, [bp+FDLGVARS.fpFileSrch] ; Load ptr to file search str |
|---|
| 274 | call MenuFile_GetItemCnt ; Get file count from new dir |
|---|
| 275 | pop ds |
|---|
| 276 | xor dx, dx ; Redraw only necessary |
|---|
| 277 | call Menu_InvItemCnt ; Redraw with new items |
|---|
| 278 | jmp .EventHandled |
|---|
| 279 | |
|---|
| 280 | ;-------------------------------------------------------------------- |
|---|
| 281 | ; EVNT_MNU_UPD event handler. |
|---|
| 282 | ; |
|---|
| 283 | ; .EventUpd |
|---|
| 284 | ; Parameters: |
|---|
| 285 | ; CX: Index of menuitem to update (MFL_UPD_ITEM only) |
|---|
| 286 | ; DL: Update flag: |
|---|
| 287 | ; MFL_UPD_TITLE Set to update title string |
|---|
| 288 | ; MFL_UPD_NFO Set to update info string |
|---|
| 289 | ; MFL_UPD_ITEM Set to update menuitem string |
|---|
| 290 | ; SS:BP: Ptr to FDLGVARS |
|---|
| 291 | ;-------------------------------------------------------------------- |
|---|
| 292 | ALIGN JUMP_ALIGN |
|---|
| 293 | .EventUpd: |
|---|
| 294 | test dl, MFL_UPD_TITLE ; Update title? |
|---|
| 295 | jnz .EventNotHandled ; If so, return without handling event |
|---|
| 296 | test dl, MFL_UPD_NFO ; Update info? |
|---|
| 297 | jnz .DrawInfo ; If so, jump to update |
|---|
| 298 | |
|---|
| 299 | ; Update Menuitem |
|---|
| 300 | call MenuFile_DrawItem ; Draw menuitem |
|---|
| 301 | jmp .EventHandled |
|---|
| 302 | |
|---|
| 303 | ; Update Info string |
|---|
| 304 | ALIGN JUMP_ALIGN |
|---|
| 305 | .DrawInfo: |
|---|
| 306 | push es |
|---|
| 307 | push di |
|---|
| 308 | mov di, [bp+MSGVARS.wStrOff] ; Load string offset |
|---|
| 309 | mov es, [bp+MSGVARS.wStrSeg] ; Load string segment |
|---|
| 310 | eMOVZX cx, [bp+MENUVARS.bInfoH] ; Load info line count to CX |
|---|
| 311 | call MenuDraw_MultilineStr ; Draw multiline str |
|---|
| 312 | pop di |
|---|
| 313 | pop es |
|---|
| 314 | jmp .EventHandled |
|---|
