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popup: no fallbacks for work areas no desktop has; text setup cannot fail

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popuplayout had two refit stages for a work area shorter than one
padded row — 40 pixels — and popupdraw re-checked the layout it had
just been handed, against an Imgh that bounded no buffer any more.
Pango and Cairo abort rather than return nil, so textinit is void and
the layout is never nil; the stride Cairo computes for RGB24 is w*4 by
definition; and textdraw set the layout's width and ellipsis twice.
This commit is contained in:
Hojun-Cho
2026-08-17 01:36:16 +09:00
parent cd637be4ca
commit 87cb03fdf8
7 changed files with 20 additions and 89 deletions
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40
font.c
View File

@@ -7,13 +7,6 @@ static PangoFontMap *fontmap;
static PangoContext *context;
static PangoLayout *layout;
static void
resetlayout(void)
{
pango_layout_set_width(layout, -1);
pango_layout_set_ellipsize(layout, PANGO_ELLIPSIZE_NONE);
}
void
textclose(void)
{
@@ -50,28 +43,16 @@ setfont(void)
pango_font_description_free(font);
}
int
void
textinit(void)
{
textclose();
FcInit();
fontmap = pango_cairo_font_map_new();
if(fontmap == nil){
fprint(2, "strans: popup: can't initialize PangoCairo\n");
return 0;
}
pango_cairo_font_map_set_resolution(PANGO_CAIRO_FONT_MAP(fontmap), 96);
context = pango_font_map_create_context(fontmap);
if(context != nil)
layout = pango_layout_new(context);
if(context == nil || layout == nil){
fprint(2, "strans: popup: can't create text layout\n");
textclose();
return 0;
}
layout = pango_layout_new(context);
pango_layout_set_single_paragraph_mode(layout, TRUE);
setfont();
return 1;
}
static int
@@ -80,8 +61,6 @@ settext(Str *s)
char utf[Maxutf];
int n;
if(layout == nil || s == nil || s->n <= 0)
return 0;
n = stoutf(s, utf, sizeof utf);
pango_layout_set_text(layout, utf, n);
return n > 0;
@@ -109,9 +88,8 @@ textwidth(Str *s)
{
PangoRectangle r;
if(layout == nil)
return 0;
resetlayout();
pango_layout_set_width(layout, -1);
pango_layout_set_ellipsize(layout, PANGO_ELLIPSIZE_NONE);
if(!settext(s))
return 0;
textextents(&r);
@@ -130,20 +108,16 @@ textdraw(u32int *buf, int w, int h, int x, int y, int fit, u32int color,
PangoRectangle r;
cairo_surface_t *surface;
cairo_t *cr;
int b, g, red, stride;
int b, g, red;
if(layout == nil || fit <= 0)
if(fit <= 0)
return;
resetlayout();
pango_layout_set_width(layout, fit * PANGO_SCALE);
pango_layout_set_ellipsize(layout, PANGO_ELLIPSIZE_END);
if(w <= 0 || h <= 0 || !settext(s))
return;
stride = cairo_format_stride_for_width(CAIRO_FORMAT_RGB24, w);
if(stride < 0 || (vlong)stride != (vlong)w * sizeof buf[0])
return;
surface = cairo_image_surface_create_for_data((uchar*)buf,
CAIRO_FORMAT_RGB24, w, h, stride);
CAIRO_FORMAT_RGB24, w, h, w * sizeof buf[0]);
if(cairo_surface_status(surface) != CAIRO_STATUS_SUCCESS){
cairo_surface_destroy(surface);
return;