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efl/src/lib/evas/common/evas_font_draw.c

465 lines
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#include "evas_common.h"
#include "evas_private.h"
#include "evas_blend_private.h"
#include "language/evas_bidi_utils.h" /*defines BIDI_SUPPORT if possible */
#include "evas_font_private.h" /* for Frame-Queuing support */
#include "evas_font_ot.h"
struct _Evas_Glyph
{
RGBA_Font_Glyph *fg;
void *data;
Eina_Rectangle coord;
FT_UInt idx;
int j;
};
EAPI void
evas_common_font_draw_init(void)
{
}
/*
* BiDi handling: We receive the shaped string + other props from text_props,
* we need to reorder it so we'll have the visual string (the way we draw)
* and then for kerning we have to switch the order of the kerning query (as the prev
* is on the right, and not on the left).
*/
EAPI void
evas_common_font_rgba_draw(RGBA_Image *dst, RGBA_Draw_Context *dc, int x, int y,
Evas_Glyph_Array *glyphs, RGBA_Gfx_Func func, int ext_x, int ext_y, int ext_w,
int ext_h, int im_w, int im_h EINA_UNUSED)
{
DATA32 *im;
Evas_Glyph *glyph;
if (!glyphs) return;
if (!glyphs->array) return;
im = dst->image.data;
EINA_INARRAY_FOREACH(glyphs->array, glyph)
{
RGBA_Font_Glyph *fg;
int chr_x, chr_y;
fg = glyph->fg;
/* FIXME: Why was that moved out of prepare ? This increase cache miss. */
glyph->coord.w = fg->glyph_out->bitmap.width;
glyph->coord.h = fg->glyph_out->bitmap.rows;
glyph->j = fg->glyph_out->bitmap.pitch;
glyph->data = fg->glyph_out->bitmap.buffer;
if (dc->font_ext.func.gl_new)
{
/* extension calls */
fg->ext_dat = dc->font_ext.func.gl_new(dc->font_ext.data, fg);
fg->ext_dat_free = dc->font_ext.func.gl_free;
}
chr_x = x + glyph->coord.x;
chr_y = y + glyph->coord.y;
if (chr_x < (ext_x + ext_w))
{
DATA8 *data;
int i, j, w, h;
data = glyph->data;
j = glyph->j;
w = glyph->coord.w;
if (j < w) j = w;
h = glyph->coord.h;
#ifdef HAVE_PIXMAN
# ifdef PIXMAN_FONT
int index;
DATA32 *font_alpha_buffer;
pixman_image_t *font_mask_image;
font_alpha_buffer = alloca(w * h * sizeof(DATA32));
for (index = 0; index < (w * h); index++)
font_alpha_buffer[index] = data[index] << 24;
font_mask_image = pixman_image_create_bits(PIXMAN_a8r8g8b8, w, h,
font_alpha_buffer,
w * sizeof(DATA32));
if (!font_mask_image) return;
# endif
#endif
{
if ((j > 0) && (chr_x + w > ext_x))
{
if ((fg->ext_dat) && (dc->font_ext.func.gl_draw))
{
/* ext glyph draw */
dc->font_ext.func.gl_draw(dc->font_ext.data,
(void *)dst,
dc, fg, chr_x,
y - (chr_y - y));
}
else
{
if ((fg->glyph_out->bitmap.num_grays == 256) &&
(fg->glyph_out->bitmap.pixel_mode == FT_PIXEL_MODE_GRAY))
{
#ifdef HAVE_PIXMAN
# ifdef PIXMAN_FONT
if ((dst->pixman.im) &&
(dc->col.pixman_color_image))
pixman_image_composite(PIXMAN_OP_OVER,
dc->col.pixman_color_image,
font_mask_image,
dst->pixman.im,
chr_x,
y - (chr_y - y),
0, 0,
chr_x,
y - (chr_y - y),
w, h);
else
# endif
#endif
{
for (i = 0; i < h; i++)
{
int dx, dy;
int in_x, in_w;
in_x = 0;
in_w = 0;
dx = chr_x;
dy = y - (chr_y - i - y);
if ((dx < (ext_x + ext_w)) &&
(dy >= (ext_y)) &&
(dy < (ext_y + ext_h)))
{
if (dx + w > (ext_x + ext_w))
in_w += (dx + w) - (ext_x + ext_w);
if (dx < ext_x)
{
in_w += ext_x - dx;
in_x = ext_x - dx;
dx = ext_x;
}
if (in_w < w)
{
func(NULL, data + (i * j) + in_x, dc->col.col,
im + (dy * im_w) + dx, w - in_w);
}
}
}
}
}
else
{
DATA8 *tmpbuf = NULL, *dp, *tp, bits;
int bi, bj;
const DATA8 bitrepl[2] = {0x0, 0xff};
tmpbuf = alloca(w);
for (i = 0; i < h; i++)
{
int dx, dy;
int in_x, in_w, end;
in_x = 0;
in_w = 0;
dx = chr_x;
dy = y - (chr_y - i - y);
tp = tmpbuf;
dp = data + (i * fg->glyph_out->bitmap.pitch);
for (bi = 0; bi < w; bi += 8)
{
bits = *dp;
if ((w - bi) < 8) end = w - bi;
else end = 8;
for (bj = 0; bj < end; bj++)
{
*tp = bitrepl[(bits >> (7 - bj)) & 0x1];
tp++;
}
dp++;
}
if ((dx < (ext_x + ext_w)) &&
(dy >= (ext_y)) &&
(dy < (ext_y + ext_h)))
{
if (dx + w > (ext_x + ext_w))
in_w += (dx + w) - (ext_x + ext_w);
if (dx < ext_x)
{
in_w += ext_x - dx;
in_x = ext_x - dx;
dx = ext_x;
}
if (in_w < w)
{
func(NULL, tmpbuf + in_x, dc->col.col,
im + (dy * im_w) + dx, w - in_w);
}
}
}
}
}
}
}
#ifdef HAVE_PIXMAN
# ifdef PIXMAN_FONT
pixman_image_unref(font_mask_image);
# endif
#endif
}
else
break;
}
}
void
evas_common_font_glyphs_ref(Evas_Glyph_Array *array)
{
array->refcount++;
}
void
evas_common_font_glyphs_unref(Evas_Glyph_Array *array)
{
if (--array->refcount) return;
eina_inarray_free(array->array);
free(array);
}
EAPI void
evas_common_font_draw_prepare(Evas_Text_Props *text_props)
{
RGBA_Font_Int *fi;
RGBA_Font_Glyph *fg;
Eina_Inarray *glyphs;
size_t unit = 32;
Eina_Bool reused_glyphs;
EVAS_FONT_WALK_TEXT_INIT();
fi = text_props->font_instance;
if (!fi) return;
if (!text_props->changed && text_props->generation == fi->generation && text_props->glyphs)
return;
if (text_props->len < unit) unit = text_props->len;
if (text_props->glyphs && text_props->glyphs->refcount == 1)
{
glyphs = text_props->glyphs->array;
glyphs->len = 0;
reused_glyphs = EINA_TRUE;
}
else
{
glyphs = eina_inarray_new(sizeof(Evas_Glyph), unit);
reused_glyphs = EINA_FALSE;
}
evas_common_font_int_reload(fi);
if (fi->src->current_size != fi->size)
{
evas_common_font_source_reload(fi->src);
FTLOCK();
FT_Activate_Size(fi->ft.size);
FTUNLOCK();
fi->src->current_size = fi->size;
}
EVAS_FONT_WALK_TEXT_START()
{
Evas_Glyph glyph;
FT_UInt idx;
if (!EVAS_FONT_WALK_IS_VISIBLE) continue;
idx = EVAS_FONT_WALK_INDEX;
fg = evas_common_font_int_cache_glyph_get(fi, idx);
if (!fg) continue;
if (!fg->glyph_out) evas_common_font_int_cache_glyph_render(fg);
glyph.fg = fg;
glyph.idx = idx;
glyph.coord.x = EVAS_FONT_WALK_PEN_X + EVAS_FONT_WALK_X_OFF + EVAS_FONT_WALK_X_BEAR;
glyph.coord.y = EVAS_FONT_WALK_PEN_Y + EVAS_FONT_WALK_Y_OFF + EVAS_FONT_WALK_Y_BEAR;
if (eina_inarray_push(glyphs, &glyph) < 0) goto error;
}
EVAS_FONT_WALK_TEXT_END();
if (!reused_glyphs)
{
/*
* Clearing the reference to the glyph array is fine, since this
* reference is only used to use this from another thread, which is now
* holding the reference.
*/
if (text_props->glyphs)
evas_common_font_glyphs_unref(text_props->glyphs);
text_props->glyphs = malloc(sizeof(*text_props->glyphs));
if (!text_props->glyphs) goto error;
text_props->glyphs->refcount = 1;
text_props->glyphs->array = glyphs;
}
/* check if there's a request queue in fi, if so ask cserve2 to render
* those glyphs
*/
text_props->generation = fi->generation;
return;
error:
eina_inarray_free(glyphs);
}
EAPI void
evas_common_font_draw_cb(RGBA_Image *dst, RGBA_Draw_Context *dc, int x, int y, Evas_Glyph_Array *glyphs, Evas_Common_Font_Draw_Cb cb)
{
static Cutout_Rects *rects = NULL;
int ext_x, ext_y, ext_w, ext_h;
int im_w, im_h;
RGBA_Gfx_Func func;
Cutout_Rect *r;
int c, cx, cy, cw, ch;
int i;
im_w = dst->cache_entry.w;
im_h = dst->cache_entry.h;
// evas_common_font_size_use(fn);
func = evas_common_gfx_func_composite_mask_color_span_get(dc->col.col, dst, 1, dc->render_op);
if (!dc->cutout.rects)
{
ext_x = 0; ext_y = 0; ext_w = im_w; ext_h = im_h;
if (dc->clip.use)
{
ext_x = dc->clip.x;
ext_y = dc->clip.y;
ext_w = dc->clip.w;
ext_h = dc->clip.h;
if (ext_x < 0)
{
ext_w += ext_x;
ext_x = 0;
}
if (ext_y < 0)
{
ext_h += ext_y;
ext_y = 0;
}
if ((ext_x + ext_w) > im_w)
ext_w = im_w - ext_x;
if ((ext_y + ext_h) > im_h)
ext_h = im_h - ext_y;
}
if (ext_w <= 0) return;
if (ext_h <= 0) return;
cb(dst, dc, x, y, glyphs,
func, ext_x, ext_y, ext_w, ext_h,
im_w, im_h);
}
else
{
c = dc->clip.use; cx = dc->clip.x; cy = dc->clip.y; cw = dc->clip.w; ch = dc->clip.h;
evas_common_draw_context_clip_clip(dc, 0, 0, dst->cache_entry.w, dst->cache_entry.h);
/* our clip is 0 size.. abort */
if ((dc->clip.w > 0) && (dc->clip.h > 0))
{
rects = evas_common_draw_context_apply_cutouts(dc, rects);
for (i = 0; i < rects->active; ++i)
{
r = rects->rects + i;
evas_common_draw_context_set_clip(dc, r->x, r->y, r->w, r->h);
cb(dst, dc, x, y, glyphs,
func, r->x, r->y, r->w, r->h,
im_w, im_h);
}
}
dc->clip.use = c; dc->clip.x = cx; dc->clip.y = cy; dc->clip.w = cw; dc->clip.h = ch;
}
}
EAPI void
evas_common_font_draw(RGBA_Image *dst, RGBA_Draw_Context *dc, int x, int y, Evas_Glyph_Array *glyphs)
{
evas_common_font_draw_cb(dst, dc, x, y, glyphs,
evas_common_font_rgba_draw);
}
EAPI void
evas_common_font_draw_do(const Cutout_Rects *reuse, const Eina_Rectangle *clip, RGBA_Gfx_Func func,
RGBA_Image *dst, RGBA_Draw_Context *dc,
int x, int y, const Evas_Text_Props *text_props)
{
Eina_Rectangle area;
Cutout_Rect *r;
int i;
int im_w, im_h;
im_w = dst->cache_entry.w;
im_h = dst->cache_entry.h;
if (!reuse)
{
evas_common_draw_context_clip_clip(dc,
clip->x, clip->y,
clip->w, clip->h);
evas_common_font_rgba_draw(dst, dc, x, y, text_props->glyphs,
func,
dc->clip.x, dc->clip.y,
dc->clip.w, dc->clip.h,
im_w, im_h);
return ;
}
for (i = 0; i < reuse->active; ++i)
{
r = reuse->rects + i;
EINA_RECTANGLE_SET(&area, r->x, r->y, r->w - 1, r->h - 1);
if (!eina_rectangle_intersection(&area, clip)) continue ;
evas_common_draw_context_set_clip(dc, area.x, area.y, area.w, area.h);
evas_common_font_rgba_draw(dst, dc, x, y, text_props->glyphs,
func, area.x, area.y, area.w, area.h,
im_w, im_h);
}
}
EAPI Eina_Bool
evas_common_font_draw_prepare_cutout(Cutout_Rects *reuse, RGBA_Image *dst, RGBA_Draw_Context *dc, RGBA_Gfx_Func *func)
{
int im_w, im_h;
im_w = dst->cache_entry.w;
im_h = dst->cache_entry.h;
*func = evas_common_gfx_func_composite_mask_color_span_get(dc->col.col, dst, 1, dc->render_op);
evas_common_draw_context_clip_clip(dc, 0, 0, im_w, im_h);
if (dc->clip.w <= 0) return EINA_FALSE;
if (dc->clip.h <= 0) return EINA_FALSE;
if (dc->cutout.rects)
{
reuse = evas_common_draw_context_apply_cutouts(dc, reuse);
}
return EINA_TRUE;
}
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