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Insert a temporary grid window and measure it #13

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Insert a temporary grid window and measure it #13

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25 changes: 22 additions & 3 deletions glk/osglkban.c
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Expand Up @@ -590,6 +590,25 @@ void os_banner_orphan(void *banner_handle)
os_banner_delete(banner_handle);
}

void osglk_window_get_size(void *banner_handle) {
osbanid_t banner = banner_handle;
if (!banner || !banner->valid || !banner->win) {
return;
}

// Measuring a true grid window or non tab aligned buffer window is easy
if (banner->type == wintype_TextGrid || !banner->status) {
glk_window_get_size(banner->win, &(banner->cwidth), &(banner->cheight));
return;
}

// But for a tab aligned window we'll make a temp grid window to measure the width
glk_window_get_size(banner->win, NULL, &(banner->cheight));
winid_t tempwin = glk_window_open(banner->win, winmethod_Below | winmethod_Fixed, 0, wintype_TextGrid, 0);
glk_window_get_size(tempwin, &(banner->cwidth), NULL);
glk_window_close(tempwin, NULL);
}

int os_banner_getinfo(void *banner_handle, os_banner_info_t *info)
{
osbanid_t banner = banner_handle;
Expand All @@ -612,7 +631,7 @@ int os_banner_getinfo(void *banner_handle, os_banner_info_t *info)

info->style = gstyletab ? OS_BANNER_STYLE_TAB_ALIGN : 0;

glk_window_get_size(banner->win, &(banner->cwidth), &(banner->cheight));
osglk_window_get_size(banner);

info->rows = banner->cheight;
info->columns = banner->cwidth;
Expand All @@ -631,7 +650,7 @@ int os_banner_get_charwidth(void *banner_handle)
if (!banner || !banner->valid || !banner->win)
return 0;

glk_window_get_size(banner->win, &(banner->cwidth), &(banner->cheight));
osglk_window_get_size(banner);

return banner->cwidth;
}
Expand All @@ -642,7 +661,7 @@ int os_banner_get_charheight(void *banner_handle)
if (!banner || !banner->valid || !banner->win)
return 0;

glk_window_get_size(banner->win, &(banner->cwidth), &(banner->cheight));
osglk_window_get_size(banner);

return banner->cheight;
}
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