static int
_vte_gl_get_char_width(struct _vte_draw *draw, gunichar c, int columns)
{
struct _vte_gl_data *data = draw->impl_data;
const struct _vte_glyph *glyph;
glyph = _vte_glyph_get(data->cache, c);
if (glyph == NULL)
return 0;
return glyph->width;
}
static int
_vte_gl_get_char_width(struct _vte_draw *draw, gunichar c, int columns)
{
struct _vte_gl_data *data;
const struct _vte_glyph *glyph;
data = (struct _vte_gl_data*) draw->impl_data;
glyph = _vte_glyph_get(data->cache, c);
if (glyph != NULL) {
return glyph->width;
}
return _vte_gl_get_text_width(draw) * columns;
}
static void
_vte_gl_draw_text(struct _vte_draw *draw,
struct _vte_draw_text_request *requests, gsize n_requests,
GdkColor *color, guchar alpha)
{
struct _vte_gl_data *data = draw->impl_data;
const struct _vte_glyph *glyph;
guint16 a, r, g, b;
guint i, j;
int k, x, y, w, pad, rows, columns, src, dest;
guchar *pixels;
glXMakeCurrent(data->display, data->glwindow, data->context);
r = color->red >> 8;
g = color->green >> 8;
b = color->blue >> 8;
rows = 0;
columns = 0;
for (i = 0; i < n_requests; i++) {
glyph = _vte_glyph_get(data->cache, requests[i].c);
columns += (requests[i].columns * data->cache->width);
if ((glyph == NULL) ||
(glyph->width == 0) ||
(glyph->height == 0)) {
continue;
}
rows = MAX(rows, glyph->skip + glyph->height);
}
_vte_buffer_set_minimum_size(data->buffer, rows * columns * 4);
pixels = data->buffer->bytes;
memset(pixels, 0, rows * columns * 4);
for (k = 0; k < rows * columns; k++) {
pixels[k * 4 + 0] = r;
pixels[k * 4 + 1] = g;
pixels[k * 4 + 2] = b;
}
for (i = j = 0; i < n_requests; i++) {
glyph = _vte_glyph_get(data->cache, requests[i].c);
w = requests[i].columns * data->cache->width;
if ((glyph == NULL) ||
(glyph->width == 0) ||
(glyph->height == 0)) {
j += w;
continue;
}
pad = (w - glyph->width) / 2;
for (y = 0; y < glyph->height; y++)
for (x = 0; x < glyph->width; x++) {
src = (y * glyph->width + x) * glyph->bytes_per_pixel;
a = glyph->bytes[src];
if (a == 0) {
continue;
}
if (alpha != VTE_DRAW_OPAQUE) {
a = (a * alpha) >> 8;
}
if (a == 0) {
continue;
}
dest = (y + glyph->skip) * columns * 4 +
(j + pad + x) * 4 + 3;
pixels[dest] = a;
}
j += w;
}
