1 | ; Project name : Assembly Library |
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2 | ; Description : Functions for initializing menu system. |
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3 | |
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4 | ; Section containing code |
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5 | SECTION .text |
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6 | |
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7 | ;-------------------------------------------------------------------- |
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8 | ; MenuEvent_InitializeMenuinit |
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9 | ; Parameters |
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10 | ; SS:BP: Ptr to MENU |
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11 | ; Returns: |
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12 | ; DS:SI: Ptr to MENU with MENUINIT initialized from user handler |
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13 | ; CF: Set if event processed |
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14 | ; Cleared if event not processed |
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15 | ; Corrupts registers: |
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16 | ; AX, BX, DX |
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17 | ;-------------------------------------------------------------------- |
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18 | ALIGN JUMP_ALIGN |
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19 | MenuEvent_InitializeMenuinit: |
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20 | push ss |
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21 | pop ds |
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22 | mov si, bp |
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23 | mov bl, MENUEVENT.InitializeMenuinitFromDSSI |
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24 | jmp SHORT MenuEvent_SendFromBX |
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25 | |
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26 | |
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27 | ;-------------------------------------------------------------------- |
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28 | ; MenuEvent_ExitMenu |
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29 | ; Parameters |
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30 | ; SS:BP: Ptr to MENU |
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31 | ; Returns: |
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32 | ; CF: Set to exit from menu |
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33 | ; Cleared to cancel exit |
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34 | ; Corrupts registers: |
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35 | ; AX, BX, DX |
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36 | ;-------------------------------------------------------------------- |
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37 | ALIGN JUMP_ALIGN |
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38 | MenuEvent_ExitMenu: |
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39 | mov bl, MENUEVENT.ExitMenu |
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40 | jmp SHORT MenuEvent_SendFromBX |
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41 | |
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42 | |
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43 | ;-------------------------------------------------------------------- |
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44 | ; MenuEvent_IdleProcessing |
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45 | ; Parameters |
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46 | ; SS:BP: Ptr to MENU |
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47 | ; Returns: |
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48 | ; CF: Set if event processed |
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49 | ; Cleared if event not processed |
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50 | ; Corrupts registers: |
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51 | ; AX, BX, DX |
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52 | ;-------------------------------------------------------------------- |
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53 | ALIGN JUMP_ALIGN |
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54 | MenuEvent_IdleProcessing: |
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55 | mov bl, MENUEVENT.IdleProcessing |
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56 | jmp SHORT MenuEvent_SendFromBX |
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57 | |
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58 | |
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59 | ;-------------------------------------------------------------------- |
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60 | ; MenuEvent_RefreshTitle |
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61 | ; MenuEvent_RefreshInformation |
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62 | ; Parameters |
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63 | ; SS:BP: Ptr to MENU |
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64 | ; Cursor will be positioned to beginning of window |
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65 | ; Returns: |
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66 | ; CF: Set if event processed |
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67 | ; Cleared if event not processed |
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68 | ; Corrupts registers: |
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69 | ; AX, CX, BX, DX |
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70 | ;-------------------------------------------------------------------- |
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71 | ALIGN JUMP_ALIGN |
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72 | MenuEvent_RefreshTitle: |
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73 | mov bl, MENUEVENT.RefreshTitle |
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74 | SKIP2B cx ; mov cx, <next instruction> |
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75 | |
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76 | MenuEvent_RefreshInformation: |
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77 | mov bl, MENUEVENT.RefreshInformation |
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78 | mov cx, [bp+MENUINIT.wHighlightedItem] |
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79 | jmp SHORT MenuEvent_SendFromBX |
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80 | |
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81 | |
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82 | ;-------------------------------------------------------------------- |
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83 | ; MenuEvent_RefreshItemFromCX |
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84 | ; Parameters |
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85 | ; CX: Index of item to refresh |
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86 | ; SS:BP: Ptr to MENU |
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87 | ; Cursor has been positioned to the beginning of item line |
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88 | ; Returns: |
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89 | ; CF: Set if event processed |
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90 | ; Cleared if event not processed |
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91 | ; Corrupts registers: |
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92 | ; AX, BX, DX |
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93 | ;-------------------------------------------------------------------- |
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94 | ALIGN JUMP_ALIGN |
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95 | MenuEvent_RefreshItemFromCX: |
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96 | mov bl, MENUEVENT.RefreshItemFromCX |
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97 | jmp SHORT MenuEvent_SendFromBX |
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98 | |
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99 | |
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100 | ;-------------------------------------------------------------------- |
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101 | ; MenuEvent_HighlightItemFromCX |
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102 | ; Parameters |
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103 | ; CX: Index of item to highlight |
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104 | ; SS:BP: Ptr to MENU |
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105 | ; Returns: |
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106 | ; Nothing |
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107 | ; Corrupts registers: |
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108 | ; AX, BX, DX, SI, DI |
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109 | ;-------------------------------------------------------------------- |
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110 | ALIGN JUMP_ALIGN |
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111 | MenuEvent_HighlightItemFromCX: |
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112 | mov dx, cx |
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113 | xchg dx, [bp+MENUINIT.wHighlightedItem] |
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114 | push dx |
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115 | |
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116 | mov bl, MENUEVENT.ItemHighlightedFromCX |
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117 | call MenuEvent_SendFromBX |
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118 | |
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119 | pop ax |
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120 | call MenuText_RefreshItemFromAX |
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121 | mov ax, [bp+MENUINIT.wHighlightedItem] |
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122 | jmp MenuText_RefreshItemFromAX |
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123 | |
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124 | |
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125 | ;-------------------------------------------------------------------- |
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126 | ; MenuEvent_KeyStrokeInAX |
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127 | ; Parameters |
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128 | ; AL: ASCII character for the key |
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129 | ; AH: Keyboard library scan code for the key |
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130 | ; SS:BP: Ptr to MENU |
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131 | ; Returns: |
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132 | ; CF: Set if event processed |
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133 | ; Cleared if event not processed |
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134 | ; Corrupts registers: |
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135 | ; AX, BX, DX |
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136 | ;-------------------------------------------------------------------- |
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137 | ALIGN JUMP_ALIGN |
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138 | MenuEvent_KeyStrokeInAX: |
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139 | mov bl, MENUEVENT.KeyStrokeInAX |
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140 | SKIP2B dx ; mov dx, <next instruction> |
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141 | |
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142 | |
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143 | ;-------------------------------------------------------------------- |
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144 | ; MenuEvent_ItemSelectedFromCX |
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145 | ; Parameters |
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146 | ; CX: Index of selected item |
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147 | ; SS:BP: Ptr to MENU |
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148 | ; Returns: |
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149 | ; CF: Set if event processed |
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150 | ; Cleared if event not processed |
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151 | ; Corrupts registers: |
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152 | ; AX, BX, DX |
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153 | ;-------------------------------------------------------------------- |
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154 | MenuEvent_ItemSelectedFromCX: |
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155 | mov bl, MENUEVENT.ItemSelectedFromCX |
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156 | ; Fall to MenuEvent_SendFromBX |
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157 | |
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158 | |
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159 | ;-------------------------------------------------------------------- |
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160 | ; MenuEvent_SendFromBX |
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161 | ; Parameters |
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162 | ; BL: Menu event to send |
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163 | ; SS:BP: Ptr to MENU |
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164 | ; Other registers: Event specific parameters |
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165 | ; Returns: |
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166 | ; AX, DX: Event specific return values |
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167 | ; CF: Set if event processed |
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168 | ; Cleared if event not processed |
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169 | ; Corrupts registers: |
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170 | ; BX |
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171 | ;-------------------------------------------------------------------- |
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172 | ALIGN JUMP_ALIGN |
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173 | MenuEvent_SendFromBX: |
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174 | push es |
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175 | push ds |
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176 | push di |
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177 | push si |
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178 | push cx |
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179 | xor bh, bh |
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180 | call [bp+MENU.fnEventHandler] |
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181 | pop cx |
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182 | pop si |
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183 | pop di |
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184 | pop ds |
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185 | pop es |
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186 | ret |
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