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vte: Fix ctrl+shift+arrows #49

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Merged
kdj0c merged 1 commit into from
Jun 22, 2026
Merged

vte: Fix ctrl+shift+arrows #49

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94 changes: 58 additions & 36 deletions src/tsm/tsm-vte.c
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Original file line number Diff line number Diff line change
Expand Up @@ -2753,6 +2753,60 @@ void tsm_vte_set_backspace_sends_delete(struct tsm_vte *vte, bool enable)
vte->backspace_sends_delete = enable;
}

/*
Code Modifiers
---------+---------------------------
2 | Shift
3 | Alt
4 | Shift + Alt
5 | Control
6 | Shift + Control
7 | Alt + Control
8 | Shift + Alt + Control
---------+---------------------------
*/

static char csi_modifier_from_mask(unsigned int mods)
{
mods = mods & (TSM_CONTROL_MASK | TSM_SHIFT_MASK | TSM_ALT_MASK);
switch(mods) {
case TSM_SHIFT_MASK:
return '2';
case TSM_ALT_MASK:
return '3';
case TSM_SHIFT_MASK | TSM_ALT_MASK:
return '4';
case TSM_CONTROL_MASK:
return '5';
case TSM_CONTROL_MASK | TSM_SHIFT_MASK:
return '6';
case TSM_CONTROL_MASK | TSM_ALT_MASK:
return '7';
case TSM_CONTROL_MASK | TSM_ALT_MASK | TSM_SHIFT_MASK:
return '8';
default:
return 0;
}
}

static void vte_write_arrow(struct tsm_vte *vte, char direction, unsigned int mods)
{
char code_with_modifier[6] = {'\e', '[', '1', ';', '0', 'A'};
char code[3] = {'\e', '[', 'A'};

int modifier = csi_modifier_from_mask(mods);
if (modifier) {
code_with_modifier[4] = modifier;
code_with_modifier[5] = direction;
vte_write(vte, code_with_modifier, 6);
} else {
if (vte->flags & TSM_VTE_FLAG_CURSOR_KEY_MODE)
code[1] = 'O';
code[2] = direction;
vte_write(vte, code, 3);
}
}

SHL_EXPORT
bool tsm_vte_handle_keyboard(struct tsm_vte *vte, uint32_t keysym,
uint32_t ascii, unsigned int mods,
Expand Down Expand Up @@ -3027,51 +3081,19 @@ bool tsm_vte_handle_keyboard(struct tsm_vte *vte, uint32_t keysym,
return true;
case XKB_KEY_Up:
case XKB_KEY_KP_Up:
if (mods & TSM_CONTROL_MASK) {
vte_write(vte, "\e[1;5A", 6);
} else if (mods & TSM_SHIFT_MASK) {
vte_write(vte, "\e[1;2A", 6);
} else if (vte->flags & TSM_VTE_FLAG_CURSOR_KEY_MODE) {
vte_write(vte, "\eOA", 3);
} else {
vte_write(vte, "\e[A", 3);
}
vte_write_arrow(vte, 'A', mods);
return true;
case XKB_KEY_Down:
case XKB_KEY_KP_Down:
if (mods & TSM_CONTROL_MASK) {
vte_write(vte, "\e[1;5B", 6);
} else if (mods & TSM_SHIFT_MASK) {
vte_write(vte, "\e[1;2B", 6);
} else if (vte->flags & TSM_VTE_FLAG_CURSOR_KEY_MODE) {
vte_write(vte, "\eOB", 3);
} else {
vte_write(vte, "\e[B", 3);
}
vte_write_arrow(vte, 'B', mods);
return true;
case XKB_KEY_Right:
case XKB_KEY_KP_Right:
if (mods & TSM_CONTROL_MASK) {
vte_write(vte, "\e[1;5C", 6);
} else if (mods & TSM_SHIFT_MASK) {
vte_write(vte, "\e[1;2C", 6);
} else if (vte->flags & TSM_VTE_FLAG_CURSOR_KEY_MODE) {
vte_write(vte, "\eOC", 3);
} else {
vte_write(vte, "\e[C", 3);
}
vte_write_arrow(vte, 'C', mods);
return true;
case XKB_KEY_Left:
case XKB_KEY_KP_Left:
if (mods & TSM_CONTROL_MASK) {
vte_write(vte, "\e[1;5D", 6);
} else if (mods & TSM_SHIFT_MASK) {
vte_write(vte, "\e[1;2D", 6);
} else if (vte->flags & TSM_VTE_FLAG_CURSOR_KEY_MODE) {
vte_write(vte, "\eOD", 3);
} else {
vte_write(vte, "\e[D", 3);
}
vte_write_arrow(vte, 'D', mods);
return true;
case XKB_KEY_KP_Insert:
case XKB_KEY_KP_0:
Expand Down
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