1 | ; File name : MenuEvent.asm |
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2 | ; Project name : XTIDE Univeral BIOS Configurator |
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3 | ; Created date : 16.4.2010 |
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4 | ; Last update : 29.4.2010 |
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5 | ; Author : Tomi Tilli |
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6 | ; Description : Handlers for menu library events. |
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7 | |
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8 | ; Section containing code |
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9 | SECTION .text |
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10 | |
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11 | ;-------------------------------------------------------------------- |
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12 | ; Main event handler for all incoming events. |
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13 | ; |
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14 | ; MenuEvent_Handler |
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15 | ; Parameters: |
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16 | ; BX: Callback event |
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17 | ; CX: Menuitem index (usually index of selected Menuitem) |
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18 | ; DX: Event parameter (event specific) |
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19 | ; SS:BP: Ptr to MENUVARS |
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20 | ; Returns: |
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21 | ; AH: Event specific or unused. Set to 0 if unused. |
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22 | ; AL: 1=Event processed |
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23 | ; 0=Event not processed (default action if any) |
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24 | ; Corrupts registers: |
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25 | ; BX, CX, DX |
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26 | ;-------------------------------------------------------------------- |
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27 | ALIGN JUMP_ALIGN |
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28 | MenuEvent_Handler: |
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29 | push es |
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30 | push ds |
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31 | push di |
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32 | push si |
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33 | |
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34 | xor ax, ax ; Event not processed |
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35 | cmp bx, BYTE EVNT_MNU_INITDONE ; Event in jump table? |
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36 | ja SHORT .Return |
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37 | shl bx, 1 |
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38 | call [cs:bx+.rgwEventJmp] |
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39 | .Return: |
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40 | pop si |
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41 | pop di |
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42 | pop ds |
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43 | pop es |
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44 | ret |
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45 | ALIGN WORD_ALIGN |
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46 | .rgwEventJmp: |
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47 | dw MenuEvent_Exit ; 0, EVNT_MNU_EXIT (Menu will quit) |
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48 | dw MenuEvent_EventItemSelectionChanged ; 1, EVNT_MMU_SELCHG (Menuitem selection changed (with arrows)) |
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49 | dw MenuEvent_EventItemSelected ; 2, EVNT_MNU_SELSET (Menuitem selected (with Enter)) |
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50 | dw MenuEvent_EventKeyPressed ; 3, EVNT_MNU_KEY (Keyboard key pressed) |
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51 | dw MenuEvent_EventMenuDraw ; 4, EVNT_MNU_UPD (Menu needs to be updated) |
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52 | dw MenuEvent_EventGetDefaultMenuitem ; 5, EVNT_MNU_GETDEF (Request menuitem to be selected by default) |
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53 | dw MenuEvent_EventMenuInitDone ; 6, EVNT_MNU_INITDONE (Menu has been initialized but not yet drawn) |
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54 | |
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55 | |
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56 | ;-------------------------------------------------------------------- |
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57 | ; Handles Menu Exit notification (EVNT_MNU_EXIT). |
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58 | ; |
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59 | ; MenuEvent_Exit |
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60 | ; Parameters: |
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61 | ; SS:BP: Ptr to MENUVARS |
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62 | ; Returns: |
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63 | ; AH: 1 to cancel exit |
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64 | ; 0 to allow menu exit |
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65 | ; AL: 1 = Event processed |
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66 | ; Corrupts registers: |
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67 | ; Nothing |
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68 | ;-------------------------------------------------------------------- |
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69 | ALIGN JUMP_ALIGN |
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70 | MenuEvent_Exit: |
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71 | cmp WORD [bp+MENUVARS.user], g_MenuPageMain ; Exiting main menu? |
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72 | je SHORT .AskUserAboutQuitting |
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73 | mov ax, 1 ; Event handled |
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74 | ret |
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75 | ALIGN JUMP_ALIGN |
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76 | .AskUserAboutQuitting: |
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77 | call BiosFile_SaveUnsavedChanges |
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78 | mov ax, 1 ; Event handled |
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79 | ret |
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80 | |
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81 | |
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82 | ;-------------------------------------------------------------------- |
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83 | ; Handles Menuitem Selection Changed notification (EVNT_MMU_SELCHG). |
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84 | ; |
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85 | ; MenuEvent_EventItemSelectionChanged |
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86 | ; Parameters: |
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87 | ; CX: Index of selected Menuitem |
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88 | ; SS:BP: Ptr to MENUVARS |
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89 | ; Returns: |
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90 | ; AX: 1 = Event processed |
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91 | ; Corrupts registers: |
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92 | ; BX, CX, DX, DI |
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93 | ;-------------------------------------------------------------------- |
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94 | ALIGN JUMP_ALIGN |
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95 | MenuEvent_EventItemSelectionChanged: |
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96 | mov dl, MFL_UPD_NFO |
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97 | call Menu_Invalidate ; Invalidate info message |
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98 | mov ax, 1 ; Event handled |
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99 | ret |
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100 | |
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101 | |
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102 | ;-------------------------------------------------------------------- |
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103 | ; Handles Menuitem Selected notification (EVNT_MNU_SELSET). |
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104 | ; |
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105 | ; MenuEvent_EventItemSelected |
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106 | ; Parameters: |
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107 | ; CX: Index of selected Menuitem |
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108 | ; SS:BP: Ptr to MENUVARS |
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109 | ; Returns: |
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110 | ; AX: 1 = Event processed |
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111 | ; Corrupts registers: |
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112 | ; BX, CX, DX, SI, DI, DS, ES |
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113 | ;-------------------------------------------------------------------- |
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114 | ALIGN JUMP_ALIGN |
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115 | MenuEvent_EventItemSelected: |
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116 | lds si, [bp+MENUVARS.user] ; DS:SI now points to MENUPAGE |
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117 | call MenuPage_GetMenuPageItemForVisibleIndex ; DS:DI now points to MENUPAGEITEM |
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118 | jnc SHORT .Return |
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119 | push cx |
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120 | call [di+MENUPAGEITEM.fnActivate] |
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121 | pop cx |
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122 | jnc SHORT .Return ; No changes |
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123 | mov dl, MFL_UPD_ITEM | MFL_UPD_NOCLEAR |
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124 | call Menu_Invalidate ; Invalidate menuitem |
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125 | .Return: |
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126 | mov ax, 1 ; Event handled |
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127 | ret |
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128 | |
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129 | |
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130 | ;-------------------------------------------------------------------- |
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131 | ; Handles Key pressed notification (EVNT_MNU_KEY). |
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132 | ; |
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133 | ; MenuEvent_EventKeyPressed |
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134 | ; Parameters: |
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135 | ; CX: Index of currently selected Menuitem |
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136 | ; DL: ASCII character |
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137 | ; DH: BIOS Scan Code |
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138 | ; SS:BP: Ptr to MENUVARS |
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139 | ; Returns: |
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140 | ; AX: 1 = Event processed |
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141 | ; Corrupts registers: |
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142 | ; BX, CX, DX, SI, DI, DS, ES |
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143 | ;-------------------------------------------------------------------- |
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144 | ALIGN JUMP_ALIGN |
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145 | MenuEvent_EventKeyPressed: |
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146 | lds si, [bp+MENUVARS.user] ; DS:SI now points to MENUPAGE |
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147 | call MenuPage_GetMenuPageItemForVisibleIndex ; DS:DI now points to MENUPAGEITEM |
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148 | jnc SHORT .Return |
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149 | call MenuEventHotkey_Pressed |
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150 | .Return: |
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151 | mov ax, 1 |
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152 | ret |
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153 | |
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154 | |
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155 | ;-------------------------------------------------------------------- |
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156 | ; Handles Menu Update notification (EVNT_MNU_UPD). |
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157 | ; |
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158 | ; MenuEvent_EventMenuDraw |
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159 | ; Parameters: |
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160 | ; CX: Index of Menuitem to update (if MFL_UPD_ITEM or MFL_UPD_NFO set) |
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161 | ; DL: Update flag (only one): |
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162 | ; MFL_UPD_TITLE Update Menu Title string(s) |
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163 | ; MFL_UPD_NFO Update Menu Info string(s) |
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164 | ; MFL_UPD_ITEM Update Menuitem string |
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165 | ; SS:BP: Ptr to MENUVARS |
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166 | ; Returns: |
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167 | ; AX: Was event processed |
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168 | ; Corrupts registers: |
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169 | ; BX, CX, DX, SI, DI, DS, ES |
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170 | ;-------------------------------------------------------------------- |
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171 | ALIGN JUMP_ALIGN |
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172 | MenuEvent_EventMenuDraw: |
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173 | test dl, MFL_UPD_ITEM ; Need to update Menuitem? |
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174 | jnz SHORT MenuEvent_DrawMenuitem |
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175 | test dl, MFL_UPD_NFO ; Need to update Info String(s)? |
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176 | jnz SHORT MenuEvent_DrawInfo |
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177 | test dl, MFL_UPD_TITLE ; Need to update Title String(s)? |
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178 | jnz SHORT MenuEvent_DrawTitle |
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179 | xor ax, ax |
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180 | ret |
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181 | |
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182 | ;-------------------------------------------------------------------- |
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183 | ; Draws Menuitem string. Cursor is set to a menuitem location. |
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184 | ; |
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185 | ; MenuEvent_DrawMenuitem |
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186 | ; Parameters: |
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187 | ; CX: Index of Menuitem to draw |
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188 | ; SS:BP: Ptr to MENUVARS |
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189 | ; Returns: |
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190 | ; AX: Was event processed |
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191 | ; Corrupts registers: |
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192 | ; BX, CX, DX, SI, DI, DS, ES |
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193 | ;-------------------------------------------------------------------- |
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194 | ALIGN JUMP_ALIGN |
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195 | MenuEvent_DrawMenuitem: |
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196 | lds si, [bp+MENUVARS.user] ; DS:SI now points to MENUPAGE |
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197 | call MenuPage_GetMenuPageItemForVisibleIndex ; DS:DI now points to MENUPAGEITEM |
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198 | jnc SHORT .Return |
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199 | call [di+MENUPAGEITEM.fnNameFormat] |
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200 | .Return: |
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201 | mov ax, 1 |
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202 | ret |
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203 | |
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204 | ;-------------------------------------------------------------------- |
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205 | ; Draws information strings. Cursor is set to a first information line. |
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206 | ; |
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207 | ; MenuEvent_DrawInfo |
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208 | ; Parameters: |
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209 | ; CX: Index of selected menuitem |
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210 | ; SS:BP: Ptr to MENUVARS |
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211 | ; Returns: |
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212 | ; AX: Was event processed |
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213 | ; Corrupts registers: |
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214 | ; BX, CX, DX, SI, DI, DS, ES |
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215 | ;-------------------------------------------------------------------- |
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216 | ALIGN JUMP_ALIGN |
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217 | MenuEvent_DrawInfo: |
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218 | lds si, [bp+MENUVARS.user] ; DS:SI now points to MENUPAGE |
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219 | call MenuPage_GetMenuPageItemForVisibleIndex ; DS:DI now points to MENUPAGEITEM |
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220 | jnc SHORT .Return |
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221 | call MenuPageItem_PrintInfo |
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222 | .Return: |
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223 | mov ax, 1 |
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224 | ret |
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225 | |
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226 | ;-------------------------------------------------------------------- |
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227 | ; Draws title strings. Cursor is set to a first title line. |
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228 | ; |
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229 | ; MenuEvent_DrawTitle |
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230 | ; Parameters: |
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231 | ; SS:BP: Ptr to MENUVARS |
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232 | ; Returns: |
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233 | ; AX: Was event processed |
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234 | ; Corrupts registers: |
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235 | ; BX, CX, DX, SI, DI, DS, ES |
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236 | ;-------------------------------------------------------------------- |
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237 | ALIGN JUMP_ALIGN |
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238 | MenuEvent_DrawTitle: |
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239 | call FormatTitle_String |
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240 | mov ax, 1 |
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241 | ret |
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242 | |
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243 | |
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244 | ;-------------------------------------------------------------------- |
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245 | ; Handles Get Default Menuitem notification (EVNT_MNU_GETDEF). |
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246 | ; |
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247 | ; MenuEvent_EventGetDefaultMenuitem |
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248 | ; Parameters: |
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249 | ; SS:BP: Ptr to MENUVARS |
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250 | ; Returns: |
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251 | ; AX: Was event processed |
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252 | ; CX: Index of menuitem to set selected |
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253 | ; Corrupts registers: |
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254 | ; Nothing |
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255 | ;-------------------------------------------------------------------- |
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256 | ALIGN JUMP_ALIGN |
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257 | MenuEvent_EventGetDefaultMenuitem: |
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258 | xor ax, ax ; Not processed, default to menuitem 0 |
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259 | ret |
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260 | |
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261 | |
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262 | ;-------------------------------------------------------------------- |
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263 | ; Handles Menu Initialized notification (EVNT_MNU_INITDONE). |
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264 | ; |
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265 | ; MenuEvent_EventMenuInitDone |
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266 | ; Parameters: |
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267 | ; SS:BP: Ptr to MENUVARS |
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268 | ; Returns: |
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269 | ; AX: Was event processed |
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270 | ; Corrupts registers: |
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271 | ; Nothing |
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272 | ;-------------------------------------------------------------------- |
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273 | ALIGN JUMP_ALIGN |
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274 | MenuEvent_EventMenuInitDone: |
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275 | mov ax, 1 |
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276 | ret |
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