void
gui_text_clip(struct gui_instance *gi, int x, int y,
unsigned int width, unsigned int height)
{
XRectangle cliprect;
cliprect.x = x;
cliprect.y = y;
cliprect.width = width;
cliprect.height = height;
XftDrawSetClipRectangles(gi->fontdraw, 0, 0, &cliprect, 1);
XRenderSetPictureClipRectangles(GUI_display, gi->back_buffer, 0, 0, &cliprect, 1);
}
static int
xftfont_draw (struct glyph_string *s, int from, int to, int x, int y,
bool with_background)
{
struct frame *f = s->f;
struct face *face = s->face;
struct xftfont_info *xftfont_info = (struct xftfont_info *) s->font;
struct xftface_info *xftface_info = NULL;
XftDraw *xft_draw = xftfont_get_xft_draw (f);
FT_UInt *code;
XftColor fg, bg;
int len = to - from;
int i;
if (s->font == face->font)
xftface_info = (struct xftface_info *) face->extra;
xftfont_get_colors (f, face, s->gc, xftface_info,
&fg, with_background ? &bg : NULL);
block_input ();
if (s->num_clips > 0)
XftDrawSetClipRectangles (xft_draw, 0, 0, s->clip, s->num_clips);
else
XftDrawSetClip (xft_draw, NULL);
if (with_background)
XftDrawRect (xft_draw, &bg,
x, y - s->font->ascent, s->width, s->font->height);
code = alloca (sizeof (FT_UInt) * len);
for (i = 0; i < len; i++)
code[i] = ((XCHAR2B_BYTE1 (s->char2b + from + i) << 8)
| XCHAR2B_BYTE2 (s->char2b + from + i));
if (s->padding_p)
for (i = 0; i < len; i++)
XftDrawGlyphs (xft_draw, &fg, xftfont_info->xftfont,
x + i, y, code + i, 1);
else
XftDrawGlyphs (xft_draw, &fg, xftfont_info->xftfont,
x, y, code, len);
unblock_input ();
return len;
}
static int
xftfont_draw (struct glyph_string *s, int from, int to, int x, int y,
bool with_background)
{
struct frame *f = s->f;
struct face *face = s->face;
struct xftfont_info *xftfont_info = (struct xftfont_info *) s->font;
struct xftface_info *xftface_info = NULL;
XftDraw *xft_draw = xftfont_get_xft_draw (f);
FT_UInt *code;
XftColor fg, bg;
int len = to - from;
int i;
if (s->font == face->font)
xftface_info = (struct xftface_info *) face->extra;
xftfont_get_colors (f, face, s->gc, xftface_info,
&fg, with_background ? &bg : NULL);
block_input ();
if (s->num_clips > 0)
XftDrawSetClipRectangles (xft_draw, 0, 0, s->clip, s->num_clips);
else
XftDrawSetClip (xft_draw, NULL);
if (with_background)
{
int height = FONT_HEIGHT (s->font), ascent = FONT_BASE (s->font);
/* Font's global height and ascent values might be
preposterously large for some fonts. We fix here the case
when those fonts are used for display of glyphless
characters, because drawing background with font dimensions
in those cases makes the display illegible. There's only one
more call to the draw method with with_background set to
true, and that's in x_draw_glyph_string_foreground, when
drawing the cursor, where we have no such heuristics
available. FIXME. */
if (s->first_glyph->type == GLYPHLESS_GLYPH
&& (s->first_glyph->u.glyphless.method == GLYPHLESS_DISPLAY_HEX_CODE
|| s->first_glyph->u.glyphless.method == GLYPHLESS_DISPLAY_ACRONYM))
height = ascent =
s->first_glyph->slice.glyphless.lower_yoff
- s->first_glyph->slice.glyphless.upper_yoff;
XftDrawRect (xft_draw, &bg, x, y - ascent, s->width, height);
}
code = alloca (sizeof (FT_UInt) * len);
for (i = 0; i < len; i++)
code[i] = ((XCHAR2B_BYTE1 (s->char2b + from + i) << 8)
| XCHAR2B_BYTE2 (s->char2b + from + i));
if (s->padding_p)
for (i = 0; i < len; i++)
XftDrawGlyphs (xft_draw, &fg, xftfont_info->xftfont,
x + i, y, code + i, 1);
else
XftDrawGlyphs (xft_draw, &fg, xftfont_info->xftfont,
x, y, code, len);
unblock_input ();
return len;
}
