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Xnest: replace XDrawString[8|16]() by xcb_poly_text_[8|16]() 

Replace XDrawString8() by xcb_poly_text_8(), as well as XDrawString16()
by xcb_poly_text_16(). Some care needs to be taken to prepend the xTextElt
header before sending the request out.

GC operation handlers don't need to care about poly-strings or length
above 254, as this is already handled by their caller, doPolyText().

Signed-off-by: Enrico Weigelt, metux IT consult <info@metux.net>
This commit is contained in:
Enrico Weigelt, metux IT consult 2024-08-01 13:28:53 +02:00
parent 0fdcadba09
commit 463dd69d9b
1 changed files with 36 additions and 4 deletions
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40
hw/xnest/GCOps.c
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@ -318,8 +318,24 @@ xnestPolyText8(DrawablePtr pDrawable, GCPtr pGC, int x, int y, int count,
{
int width;
XDrawString(xnestDisplay, xnestDrawable(pDrawable), xnestGC(pGC),
x, y, string, count);
// we need to prepend a xTextElt struct before our actual characters
// won't get more than 254 elements, since it's already processed by doPolyText()
int const bufsize = sizeof(xTextElt) + count;
uint8_t *buffer = malloc(bufsize);
xTextElt *elt = (xTextElt*)buffer;
elt->len = count;
elt->delta = 0;
memcpy(buffer+2, string, count);
xcb_poly_text_8(xnestUpstreamInfo.conn,
xnestDrawable(pDrawable),
xnestUpstreamGC(pGC),
x,
y,
bufsize,
(uint8_t*)buffer);
free(buffer);
width = XTextWidth(xnestFontStruct(pGC->font), string, count);
@ -332,8 +348,24 @@ xnestPolyText16(DrawablePtr pDrawable, GCPtr pGC, int x, int y, int count,
{
int width;
XDrawString16(xnestDisplay, xnestDrawable(pDrawable), xnestGC(pGC),
x, y, (XChar2b *) string, count);
// we need to prepend a xTextElt struct before our actual characters
// won't get more than 254 elements, since it's already processed by doPolyText()
int const bufsize = sizeof(xTextElt) + count*2;
uint8_t *buffer = malloc(bufsize);
xTextElt *elt = (xTextElt*)buffer;
elt->len = count;
elt->delta = 0;
memcpy(buffer+2, string, count*2);
xcb_poly_text_16(xnestUpstreamInfo.conn,
xnestDrawable(pDrawable),
xnestUpstreamGC(pGC),
x,
y,
bufsize,
buffer);
free(buffer);
width = XTextWidth16(xnestFontStruct(pGC->font), (XChar2b *) string, count);