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ime: render pre-edit text

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This is done by allocating cells for the pre-edit text when receiving
the text-input::done() call, and populating them by converting the
utf-8 formatted pre-edit text to wchars.

We also convert the pre-edit cursor position to cell positions (it can
cover multiple cells).

When rendering, we simply render the pre-edit cells on-top off the
regular grid. While doing so, we also mark the underlying, “real”,
cells as dirty, to ensure they are re-rendered when the pre-edit text
is modified or removed.
This commit is contained in:
Daniel Eklöf 2020-12-02 18:52:50 +01:00
parent 5745c610ac
commit 8c3d48c5cd
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GPG key ID: 5BBD4992C116573F
8 changed files with 364 additions and 60 deletions
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13
terminal.h
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@ -470,6 +470,19 @@ struct terminal {
unsigned max_height; /* Maximum image height, in pixels */
} sixel;
struct {
struct {
struct cell *cells;
int count;
struct {
bool hidden;
int start; /* Cell index, inclusive */
int end; /* Cell index, exclusive */
} cursor;
} preedit;
} ime;
bool quit;
bool is_shutting_down;
void (*shutdown_cb)(void *data, int exit_code);