kc3-lang/libxkbcommon/test/data/keymaps/modmap-none.xkb

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• Hash : 5b5b67f2
  Author :
  Date : 2023-05-01T22:30:41
  

  Add support for modmap None (#291) Unlike current xkbcommon, X11’s xkbcomp allows to remove entries in the modifiers’ map using “modifier_map None { … }”. “None” is translated to the special value “XkbNoModifier” defined in “X11/extensions/XKB.h”. Then it relies on the fact that in "CopyModMapDef", the following code: 1U << entry->modifier ends up being zero when “entry->modifier” is “XkbNoModifier” (i.e. 0xFF). Indeed, it relies on the overflow behaviour of the left shift, which in practice resolves to use only the 5 low bits of the shift amount, i.e. 0x1F here. Then the result of “1U << 0xFF” is cast to “char”, i.e. 0. This is a good trick but too magical, so in libxkbcommon we will use an explicit test against our new constant XKB_MOD_NONE.

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• test/data/keymaps/modmap-none.xkb

• xkb_keymap {
  xkb_keycodes "test" {
      minimum = 8;
      maximum = 255;
  	<LVL3>  = 92;
      <LFSH>  = 50;
  	<RTSH>  = 62;
  	<LALT>  = 64;
  	<RALT>  = 108;
  	<LWIN>  = 133;
  	<RWIN>  = 134;
  	<LCTL>  = 37;
  	<RCTL>  = 105;
  	<CAPS>  = 66;
  
  	<AD01> = 24;
  	<AD02> = 25;
  	<AD03> = 26;
  	<AD04> = 27;
  	<AD05> = 28;
  	<AD06> = 29;
  	<AD07> = 30;
  	<AD08> = 31;
  	<AD09> = 32;
  };
  
  xkb_types "complete" {
      type "ONE_LEVEL" {
          modifiers= none;
          level_name[Level1]= "Any";
      };
  	type "TWO_LEVEL" {
  		modifiers= Shift;
  		map[Shift]= 2;
  		level_name[1]= "Base";
  		level_name[2]= "Shift";
  	};
  };
  xkb_compatibility "complete" {
      interpret.useModMapMods= AnyLevel;
      interpret.repeat= False;
      interpret.locking= False;
  
      interpret Any+AnyOf(all) {
          action= SetMods(modifiers=modMapMods,clearLocks);
      };
  };
  xkb_symbols {
      name[group1]="Test";
  
      // Reset modmap with a key with empty modmap
      key <LVL3> { [VoidSymbol] };
      modmap None { <LVL3> };
  
      // Reset modmap with one key
      key <LFSH> { [Shift_L] };
      modmap Shift { <LFSH> };
      modmap none  { <LFSH> };
  
      // Reset modmap with one symbol
      key <RTSH> { [Shift_R] };
      modmap Shift { Shift_R };
      modmap NONE  { Shift_R };
  
      // Cycle
      key <LWIN> { [Super_L] };
      modmap Mod4 { <LWIN> };
      modmap None { <LWIN> };
      modmap Mod4 { <LWIN> };
  
      // Cycle
      key <RWIN> { [Super_R] };
      modmap Mod4 { <RWIN> };
      modmap None { <RWIN> };
      modmap Mod4 { Super_R };
  
      // Mix keycode and keysym
      key <LCTL> { [Control_L] };
      modmap Control { Control_L };
      modmap None    { <LCTL> };
  
      // Mix keycode and keysym
      key <RCTL> { [Control_R] };
      modmap Control { <RCTL> };
      modmap None    { Control_R };
  
      // Re-set with different modifier
      key <LALT> { [Alt_L] };
      modmap Mod2 { <LALT> };
      modmap None { <LALT> };
      modmap Mod1 { <LALT> };
  
      // Re-set with different modifier with both key and keysym
      key <RALT> { [ISO_Level3_Shift] };
      modmap Mod1 { <RALT> };           // Mod1
      modmap None { <RALT> };           // None
      modmap Mod2 { <RALT> };           // Mod2
      modmap Mod3 { ISO_Level3_Shift }; // Mod2 | Mod3
      modmap None { ISO_Level3_Shift }; // Mod2
      modmap Mod5 { ISO_Level3_Shift }; // Mod2 | Mod5
  
      // Re-set with different modifier with both key and keysym
      key <CAPS> { [Caps_Lock] };
      modmap Mod1 { Caps_Lock };  // Mod1
      modmap None { <CAPS> };     // Mod1
      modmap None { Caps_Lock };  // None
      modmap Lock { <CAPS> };     // Lock
  
      // Merge modes
      key <AD01> { [q] };
      modMap Mod1 { <AD01> };
      augment modMap None { <AD01> };
  
      key <AD02> { [w] };
      modMap Mod2 { <AD02> };
      override modMap None { <AD02> };
  
      key <AD03> { [e] };
      modMap Mod3 { <AD03> };
      replace modMap None { <AD03> };
  
      key <AD04> { [r] };
      modMap Mod1 { <AD04> };
      augment modMap None { r };
  
      key <AD05> { [t] };
      modMap Mod2 { <AD05> };
      replace modMap None { t };
  
      key <AD06> { [y] };
      modMap Mod3 { <AD06> };
      override modMap None { y };
  
      key <AD07> { [u] };
      modMap Mod1 { <AD07> };
      replace key <AD07> { [U] }; // Won’t affect the modMap
  
      key <AD08> { [i] };
      modMap Mod2 { i, I };
      replace key <AD08> { [I] };
      modMap None { i }; // Does not resolve
  
      key <AD09> { [1] };
      modMap Mod3 { 1, 2 };
      override key <AD09> { [NoSymbol, 2] };
      modMap None { 1 };
  };
  };
  

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