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do not draw text with cairo directly on xlib pixmap (workaround for intel graphics bug, see emacs implementation)

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This commit is contained in:
Chris Lee 2019-02-23 20:06:06 +01:00
parent 00f0bbd354
commit e1211a929f
3 changed files with 20 additions and 2 deletions
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4
src/util/area.c
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@ -478,14 +478,14 @@ void draw(Area *a)
a->_clear(a);
}
cairo_surface_t *cs = cairo_xlib_surface_create(server.display, a->pix, server.visual, a->width, a->height);
cairo_surface_t *cs = cairo_image_surface_create(CAIRO_FORMAT_ARGB32, a->width, a->height);
cairo_t *c = cairo_create(cs);
draw_background(a, c);
if (a->_draw_foreground)
a->_draw_foreground(a, c);
draw_cairo_surface_to_xpixmap(cs, a->pix);
cairo_destroy(c);
cairo_surface_destroy(cs);
}

16
src/util/common.c
View file

@ -1229,3 +1229,19 @@ void dump_image_data(const char *file_name, const char *name)
imlib_free_image();
}
void draw_cairo_surface_to_xpixmap(cairo_surface_t *cs, Pixmap pix)
{
int w = cairo_image_surface_get_width(cs);
int h = cairo_image_surface_get_height(cs);
cairo_surface_t *cs_xlib = cairo_xlib_surface_create(server.display, pix, server.visual, w, h);
cairo_xlib_surface_set_size(cs_xlib, w, h);
cairo_t *c_xlib = cairo_create(cs_xlib);
cairo_set_source_surface(c_xlib, cs, 0, 0);
cairo_paint(c_xlib);
cairo_surface_flush(cs_xlib);
cairo_destroy(c_xlib);
cairo_surface_destroy(cs_xlib);
}

2
src/util/common.h
View file

@ -154,6 +154,8 @@ void get_image_mean_color(const Imlib_Image image, Color *mean_color);
void dump_image_data(const char *file_name, const char *name);
void draw_cairo_surface_to_xpixmap(cairo_surface_t *cs, Pixmap pix);
#define free_and_null(p) \
{ \
free(p); \