static void
fz_draw_fill_image_mask(fz_context *ctx, void *user, fz_pixmap *image, fz_matrix ctm,
fz_colorspace *colorspace, float *color, float alpha)
{
fz_draw_device *dev = user;
fz_colorspace *model = dev->dest->colorspace;
unsigned char colorbv[FZ_MAX_COLORS + 1];
float colorfv[FZ_MAX_COLORS];
fz_pixmap *scaled = NULL;
int dx, dy;
int i;
if (image->w == 0 || image->h == 0)
return;
if (dev->blendmode & FZ_BLEND_KNOCKOUT)
fz_knockout_begin(ctx, dev);
dx = sqrtf(ctm.a * ctm.a + ctm.b * ctm.b);
dy = sqrtf(ctm.c * ctm.c + ctm.d * ctm.d);
if (dx < image->w && dy < image->h)
{
int gridfit = alpha == 1.0f && !(dev->flags & FZ_DRAWDEV_FLAGS_TYPE3);
scaled = fz_transform_pixmap(ctx, image, &ctm, dev->dest->x, dev->dest->y, dx, dy, gridfit);
if (scaled == NULL)
{
if (dx < 1)
dx = 1;
if (dy < 1)
dy = 1;
scaled = fz_scale_pixmap(ctx, image, image->x, image->y, dx, dy);
}
if (scaled != NULL)
image = scaled;
}
fz_convert_color(ctx, colorspace, color, model, colorfv);
for (i = 0; i < model->n; i++)
colorbv[i] = colorfv[i] * 255;
colorbv[i] = alpha * 255;
fz_paint_image_with_color(dev->dest, dev->scissor, dev->shape, image, ctm, colorbv);
if (scaled)
fz_drop_pixmap(ctx, scaled);
if (dev->blendmode & FZ_BLEND_KNOCKOUT)
fz_knockout_begin(ctx, dev);
}
static void
fz_draw_stroke_path(fz_device *devp, fz_path *path, fz_stroke_state *stroke, fz_matrix ctm,
fz_colorspace *colorspace, float *color, float alpha)
{
fz_draw_device *dev = devp->user;
float expansion = fz_matrix_expansion(ctm);
float flatness = 0.3f / expansion;
float linewidth = stroke->linewidth;
unsigned char colorbv[FZ_MAX_COLORS + 1];
float colorfv[FZ_MAX_COLORS];
fz_bbox bbox;
int i;
fz_draw_state *state = &dev->stack[dev->top];
fz_colorspace *model = state->dest->colorspace;
if (model == NULL)
model = fz_device_gray;
if (linewidth * expansion < 0.1f)
linewidth = 1 / expansion;
fz_reset_gel(dev->gel, state->scissor);
if (stroke->dash_len > 0)
fz_flatten_dash_path(dev->gel, path, stroke, ctm, flatness, linewidth);
else
fz_flatten_stroke_path(dev->gel, path, stroke, ctm, flatness, linewidth);
fz_sort_gel(dev->gel);
bbox = fz_bound_gel(dev->gel);
bbox = fz_intersect_bbox(bbox, state->scissor);
if (fz_is_empty_rect(bbox))
return;
if (state->blendmode & FZ_BLEND_KNOCKOUT)
state = fz_knockout_begin(dev);
fz_convert_color(dev->ctx, model, colorfv, colorspace, color);
for (i = 0; i < model->n; i++)
colorbv[i] = colorfv[i] * 255;
colorbv[i] = alpha * 255;
fz_scan_convert(dev->gel, 0, bbox, state->dest, colorbv);
if (state->shape)
{
fz_reset_gel(dev->gel, state->scissor);
if (stroke->dash_len > 0)
fz_flatten_dash_path(dev->gel, path, stroke, ctm, flatness, linewidth);
else
fz_flatten_stroke_path(dev->gel, path, stroke, ctm, flatness, linewidth);
fz_sort_gel(dev->gel);
colorbv[0] = 255;
fz_scan_convert(dev->gel, 0, bbox, state->shape, colorbv);
}
if (state->blendmode & FZ_BLEND_KNOCKOUT)
fz_knockout_end(dev);
}
static void
fz_draw_begin_tile(fz_context *ctx, void *user, fz_rect area, fz_rect view, float xstep, float ystep, fz_matrix ctm)
{
fz_draw_device *dev = user;
fz_colorspace *model = dev->dest->colorspace;
fz_pixmap *dest;
fz_bbox bbox;
/* area, view, xstep, ystep are in pattern space */
/* ctm maps from pattern space to device space */
if (dev->top == dev->stack_max)
fz_grow_stack(dev);
if (dev->blendmode & FZ_BLEND_KNOCKOUT)
fz_knockout_begin(ctx, dev);
bbox = fz_round_rect(fz_transform_rect(ctm, view));
/* We should never have a bbox that entirely covers our destination.
* If we do, then the check for only 1 tile being visible above has
* failed. */
/* SumatraPDF: assertion intentionally disabled
assert(bbox.x0 > dev->dest->x || bbox.x1 < dev->dest->x + dev->dest->w ||
bbox.y0 > dev->dest->y || bbox.y1 < dev->dest->y + dev->dest->h);
/* cf. http://bugs.ghostscript.com/show_bug.cgi?id=692418 */
dest = fz_new_pixmap_with_limit(ctx, model, bbox.x1 - bbox.x0, bbox.y1 - bbox.y0);
if (dest)
{
dest->x = bbox.x0;
dest->y = bbox.y0;
}
else
{
bbox.x1 = bbox.x0;
bbox.y1 = bbox.y0;
dest = fz_new_pixmap_with_rect(ctx, model, bbox);
}
/* FIXME: See note #1 */
fz_clear_pixmap(dest);
dev->stack[dev->top].scissor = dev->scissor;
dev->stack[dev->top].dest = dev->dest;
dev->stack[dev->top].shape = dev->shape;
/* FIXME: See note #1 */
dev->stack[dev->top].blendmode = dev->blendmode | FZ_BLEND_ISOLATED;
dev->stack[dev->top].xstep = xstep;
dev->stack[dev->top].ystep = ystep;
dev->stack[dev->top].area = area;
dev->stack[dev->top].ctm = ctm;
#ifdef DUMP_GROUP_BLENDS
dump_spaces(dev->top, "Tile begin\n");
#endif
dev->top++;
dev->scissor = bbox;
dev->dest = dest;
}
static void
fz_draw_begin_tile(fz_device *devp, fz_rect area, fz_rect view, float xstep, float ystep, fz_matrix ctm)
{
fz_draw_device *dev = devp->user;
fz_pixmap *dest = NULL;
fz_pixmap *shape;
fz_bbox bbox;
fz_context *ctx = dev->ctx;
fz_draw_state *state = &dev->stack[dev->top];
fz_colorspace *model = state->dest->colorspace;
/* area, view, xstep, ystep are in pattern space */
/* ctm maps from pattern space to device space */
if (state->blendmode & FZ_BLEND_KNOCKOUT)
fz_knockout_begin(dev);
state = push_stack(dev);
bbox = fz_bbox_covering_rect(fz_transform_rect(ctm, view));
/* We should never have a bbox that entirely covers our destination.
* If we do, then the check for only 1 tile being visible above has
* failed. Actually, this *can* fail due to the round_rect, at extreme
* resolutions, so disable this assert.
* assert(bbox.x0 > state->dest->x || bbox.x1 < state->dest->x + state->dest->w ||
* bbox.y0 > state->dest->y || bbox.y1 < state->dest->y + state->dest->h);
*/
dest = fz_new_pixmap_with_bbox(dev->ctx, model, bbox);
fz_clear_pixmap(ctx, dest);
shape = state[0].shape;
if (shape)
{
fz_var(shape);
fz_try(ctx)
{
shape = fz_new_pixmap_with_bbox(dev->ctx, NULL, bbox);
fz_clear_pixmap(ctx, shape);
}
fz_catch(ctx)
{
fz_drop_pixmap(ctx, dest);
fz_rethrow(ctx);
}
}
state[1].blendmode |= FZ_BLEND_ISOLATED;
state[1].xstep = xstep;
state[1].ystep = ystep;
state[1].area = area;
state[1].ctm = ctm;
#ifdef DUMP_GROUP_BLENDS
dump_spaces(dev->top-1, "Tile begin\n");
#endif
state[1].scissor = bbox;
state[1].dest = dest;
state[1].shape = shape;
}
static void
fz_draw_end_tile(fz_context *ctx, void *user)
{
fz_draw_device *dev = user;
fz_pixmap *tile = dev->dest;
float xstep, ystep;
fz_matrix ctm, ttm;
fz_rect area;
int x0, y0, x1, y1, x, y;
if (dev->top > 0)
{
dev->top--;
#ifdef DUMP_GROUP_BLENDS
dump_spaces(dev->top, "Tile end\n");
#endif
xstep = dev->stack[dev->top].xstep;
ystep = dev->stack[dev->top].ystep;
area = dev->stack[dev->top].area;
ctm = dev->stack[dev->top].ctm;
dev->scissor = dev->stack[dev->top].scissor;
dev->dest = dev->stack[dev->top].dest;
dev->blendmode = dev->stack[dev->top].blendmode;
x0 = floorf(area.x0 / xstep);
y0 = floorf(area.y0 / ystep);
x1 = ceilf(area.x1 / xstep);
y1 = ceilf(area.y1 / ystep);
ctm.e = tile->x;
ctm.f = tile->y;
for (y = y0; y < y1; y++)
{
for (x = x0; x < x1; x++)
{
ttm = fz_concat(fz_translate(x * xstep, y * ystep), ctm);
tile->x = ttm.e;
tile->y = ttm.f;
fz_paint_pixmap_with_rect(dev->dest, tile, 255, dev->scissor);
}
}
fz_drop_pixmap(ctx, tile);
}
if (dev->blendmode & FZ_BLEND_KNOCKOUT)
fz_knockout_begin(ctx, dev);
}
static void
fz_draw_stroke_text(fz_context *ctx, void *user, fz_text *text, fz_stroke_state *stroke, fz_matrix ctm,
fz_colorspace *colorspace, float *color, float alpha)
{
fz_draw_device *dev = user;
fz_colorspace *model = dev->dest->colorspace;
unsigned char colorbv[FZ_MAX_COLORS + 1];
float colorfv[FZ_MAX_COLORS];
fz_matrix tm, trm;
fz_pixmap *glyph;
int i, x, y, gid;
if (dev->blendmode & FZ_BLEND_KNOCKOUT)
fz_knockout_begin(ctx, dev);
fz_convert_color(ctx, colorspace, color, model, colorfv);
for (i = 0; i < model->n; i++)
colorbv[i] = colorfv[i] * 255;
colorbv[i] = alpha * 255;
tm = text->trm;
for (i = 0; i < text->len; i++)
{
gid = text->items[i].gid;
if (gid < 0)
continue;
tm.e = text->items[i].x;
tm.f = text->items[i].y;
trm = fz_concat(tm, ctm);
x = floorf(trm.e);
y = floorf(trm.f);
trm.e = QUANT(trm.e - floorf(trm.e), HSUBPIX);
trm.f = QUANT(trm.f - floorf(trm.f), VSUBPIX);
glyph = fz_render_stroked_glyph(ctx, dev->cache, text->font, gid, trm, ctm, stroke);
if (glyph)
{
draw_glyph(colorbv, dev->dest, glyph, x, y, dev->scissor);
if (dev->shape)
draw_glyph(colorbv, dev->shape, glyph, x, y, dev->scissor);
fz_drop_pixmap(ctx, glyph);
}
}
if (dev->blendmode & FZ_BLEND_KNOCKOUT)
fz_knockout_end(ctx, dev);
}
static void
fz_draw_fill_path(fz_device *devp, fz_path *path, int even_odd, fz_matrix ctm,
fz_colorspace *colorspace, float *color, float alpha)
{
fz_draw_device *dev = devp->user;
float expansion = fz_matrix_expansion(ctm);
float flatness = 0.3f / expansion;
unsigned char colorbv[FZ_MAX_COLORS + 1];
float colorfv[FZ_MAX_COLORS];
fz_bbox bbox;
int i;
fz_draw_state *state = &dev->stack[dev->top];
fz_colorspace *model = state->dest->colorspace;
fz_reset_gel(dev->gel, state->scissor);
fz_flatten_fill_path(dev->gel, path, ctm, flatness);
fz_sort_gel(dev->gel);
bbox = fz_bound_gel(dev->gel);
bbox = fz_intersect_bbox(bbox, state->scissor);
if (fz_is_empty_rect(bbox))
return;
if (state->blendmode & FZ_BLEND_KNOCKOUT)
state = fz_knockout_begin(dev);
fz_convert_color(dev->ctx, model, colorfv, colorspace, color);
for (i = 0; i < model->n; i++)
colorbv[i] = colorfv[i] * 255;
colorbv[i] = alpha * 255;
fz_scan_convert(dev->gel, even_odd, bbox, state->dest, colorbv);
if (state->shape)
{
fz_reset_gel(dev->gel, state->scissor);
fz_flatten_fill_path(dev->gel, path, ctm, flatness);
fz_sort_gel(dev->gel);
colorbv[0] = alpha * 255;
fz_scan_convert(dev->gel, even_odd, bbox, state->shape, colorbv);
}
if (state->blendmode & FZ_BLEND_KNOCKOUT)
fz_knockout_end(dev);
}
static void
fz_draw_fill_image(fz_context *ctx, void *user, fz_pixmap *image, fz_matrix ctm, float alpha)
{
fz_draw_device *dev = user;
fz_colorspace *model = dev->dest->colorspace;
fz_pixmap *converted = NULL;
fz_pixmap *scaled = NULL;
int after;
int dx, dy;
if (!model)
{
fz_warn(ctx, "cannot render image directly to an alpha mask");
return;
}
if (image->w == 0 || image->h == 0)
return;
/* convert images with more components (cmyk->rgb) before scaling */
/* convert images with fewer components (gray->rgb after scaling */
/* convert images with expensive colorspace transforms after scaling */
if (dev->blendmode & FZ_BLEND_KNOCKOUT)
fz_knockout_begin(ctx, dev);
after = 0;
if (image->colorspace == fz_device_gray)
after = 1;
if (image->colorspace != model && !after)
{
converted = fz_new_pixmap_with_rect(ctx, model, fz_bound_pixmap(image));
fz_convert_pixmap(ctx, image, converted);
image = converted;
}
dx = sqrtf(ctm.a * ctm.a + ctm.b * ctm.b);
dy = sqrtf(ctm.c * ctm.c + ctm.d * ctm.d);
if (dx < image->w && dy < image->h)
{
int gridfit = alpha == 1.0f && !(dev->flags & FZ_DRAWDEV_FLAGS_TYPE3);
scaled = fz_transform_pixmap(ctx, image, &ctm, dev->dest->x, dev->dest->y, dx, dy, gridfit);
if (scaled == NULL)
{
if (dx < 1)
dx = 1;
if (dy < 1)
dy = 1;
scaled = fz_scale_pixmap(ctx, image, image->x, image->y, dx, dy);
}
if (scaled != NULL)
image = scaled;
}
if (image->colorspace != model)
{
if ((image->colorspace == fz_device_gray && model == fz_device_rgb) ||
(image->colorspace == fz_device_gray && model == fz_device_bgr))
{
/* We have special case rendering code for gray -> rgb/bgr */
}
else
{
converted = fz_new_pixmap_with_rect(ctx, model, fz_bound_pixmap(image));
fz_convert_pixmap(ctx, image, converted);
image = converted;
}
}
fz_paint_image(dev->dest, dev->scissor, dev->shape, image, ctm, alpha * 255);
if (scaled)
fz_drop_pixmap(ctx, scaled);
if (converted)
fz_drop_pixmap(ctx, converted);
if (dev->blendmode & FZ_BLEND_KNOCKOUT)
fz_knockout_end(ctx, dev);
}
static void
fz_draw_fill_shade(fz_context *ctx, void *user, fz_shade *shade, fz_matrix ctm, float alpha)
{
fz_draw_device *dev = user;
fz_colorspace *model = dev->dest->colorspace;
fz_pixmap *dest = dev->dest;
fz_rect bounds;
fz_bbox bbox, scissor;
float colorfv[FZ_MAX_COLORS];
unsigned char colorbv[FZ_MAX_COLORS + 1];
bounds = fz_bound_shade(shade, ctm);
bbox = fz_intersect_bbox(fz_round_rect(bounds), dev->scissor);
scissor = dev->scissor;
// TODO: proper clip by shade->bbox
if (fz_is_empty_rect(bbox))
return;
if (!model)
{
fz_warn(ctx, "cannot render shading directly to an alpha mask");
return;
}
if (alpha < 1)
{
dest = fz_new_pixmap_with_rect(ctx, dev->dest->colorspace, bbox);
fz_clear_pixmap(dest);
}
if (dev->blendmode & FZ_BLEND_KNOCKOUT)
fz_knockout_begin(ctx, dev);
if (shade->use_background)
{
unsigned char *s;
int x, y, n, i;
fz_convert_color(ctx, shade->colorspace, shade->background, model, colorfv);
for (i = 0; i < model->n; i++)
colorbv[i] = colorfv[i] * 255;
colorbv[i] = 255;
n = dest->n;
for (y = scissor.y0; y < scissor.y1; y++)
{
s = dest->samples + ((scissor.x0 - dest->x) + (y - dest->y) * dest->w) * dest->n;
for (x = scissor.x0; x < scissor.x1; x++)
{
for (i = 0; i < n; i++)
*s++ = colorbv[i];
}
}
if (dev->shape)
{
for (y = scissor.y0; y < scissor.y1; y++)
{
s = dev->shape->samples + (scissor.x0 - dev->shape->x) + (y - dev->shape->y) * dev->shape->w;
for (x = scissor.x0; x < scissor.x1; x++)
{
*s++ = 255;
}
}
}
}
fz_paint_shade(ctx, shade, ctm, dest, bbox);
if (dev->shape)
fz_clear_pixmap_rect_with_color(dev->shape, 255, bbox);
if (alpha < 1)
{
fz_paint_pixmap(dev->dest, dest, alpha * 255);
fz_drop_pixmap(ctx, dest);
}
if (dev->blendmode & FZ_BLEND_KNOCKOUT)
fz_knockout_end(ctx, dev);
}
static void
fz_draw_fill_text(fz_context *ctx, void *user, fz_text *text, fz_matrix ctm,
fz_colorspace *colorspace, float *color, float alpha)
{
fz_draw_device *dev = user;
fz_colorspace *model = dev->dest->colorspace;
unsigned char colorbv[FZ_MAX_COLORS + 1];
unsigned char shapebv;
float colorfv[FZ_MAX_COLORS];
fz_matrix tm, trm;
fz_pixmap *glyph;
int i, x, y, gid;
if (dev->blendmode & FZ_BLEND_KNOCKOUT)
fz_knockout_begin(ctx, dev);
fz_convert_color(ctx, colorspace, color, model, colorfv);
for (i = 0; i < model->n; i++)
colorbv[i] = colorfv[i] * 255;
colorbv[i] = alpha * 255;
shapebv = 255;
tm = text->trm;
for (i = 0; i < text->len; i++)
{
gid = text->items[i].gid;
if (gid < 0)
continue;
tm.e = text->items[i].x;
tm.f = text->items[i].y;
trm = fz_concat(tm, ctm);
x = floorf(trm.e);
y = floorf(trm.f);
trm.e = QUANT(trm.e - floorf(trm.e), HSUBPIX);
trm.f = QUANT(trm.f - floorf(trm.f), VSUBPIX);
glyph = fz_render_glyph(ctx, dev->cache, text->font, gid, trm, model);
if (glyph)
{
/* cf. http://code.google.com/p/sumatrapdf/issues/detail?id=1746 */
if (glyph->n > 1 && text->font->t3procs)
{
float light;
fz_convert_color(ctx, colorspace, color, fz_device_gray, &light);
if (light != 0)
{
fz_pixmap *gray = fz_new_pixmap_with_rect(ctx, fz_device_gray, fz_bound_pixmap(glyph));
fz_convert_pixmap(ctx, glyph, gray);
fz_drop_pixmap(ctx, glyph);
glyph = fz_alpha_from_gray(ctx, gray, 0);
fz_drop_pixmap(ctx, gray);
}
}
if (glyph->n == 1)
{
draw_glyph(colorbv, dev->dest, glyph, x, y, dev->scissor);
if (dev->shape)
draw_glyph(&shapebv, dev->shape, glyph, x, y, dev->scissor);
}
else
{
fz_matrix ctm = {glyph->w, 0.0, 0.0, -glyph->h, x + glyph->x, y + glyph->y + glyph->h};
fz_paint_image(dev->dest, dev->scissor, dev->shape, glyph, ctm, alpha * 255);
}
fz_drop_pixmap(ctx, glyph);
}
}
if (dev->blendmode & FZ_BLEND_KNOCKOUT)
fz_knockout_end(ctx, dev);
}
static void
fz_draw_begin_group(fz_context *ctx, void *user, fz_rect rect, int isolated, int knockout, int blendmode, float alpha)
{
fz_draw_device *dev = user;
fz_colorspace *model = dev->dest->colorspace;
fz_bbox bbox;
fz_pixmap *dest, *shape;
if (dev->top == dev->stack_max)
{
fz_warn(ctx, "assert: too many buffers on stack");
return;
}
if (dev->blendmode & FZ_BLEND_KNOCKOUT)
fz_knockout_begin(ctx, dev);
bbox = fz_round_rect(rect);
bbox = fz_intersect_bbox(bbox, dev->scissor);
dest = fz_new_pixmap_with_rect(ctx, model, bbox);
#ifndef ATTEMPT_KNOCKOUT_AND_ISOLATED
knockout = 0;
isolated = 1;
#endif
if (isolated)
{
fz_clear_pixmap(dest);
}
else
{
fz_copy_pixmap_rect(dest, dev->dest, bbox);
}
if (blendmode == 0 && alpha == 1.0 && isolated || 1 /* SumatraPDF: disable crashy shape code */)
{
/* We can render direct to any existing shape plane. If there
* isn't one, we don't need to make one. */
shape = dev->shape;
}
else
{
shape = fz_new_pixmap_with_rect(ctx, NULL, bbox);
fz_clear_pixmap(shape);
}
dev->stack[dev->top].alpha = alpha;
dev->stack[dev->top].blendmode = dev->blendmode;
dev->stack[dev->top].scissor = dev->scissor;
dev->stack[dev->top].dest = dev->dest;
dev->stack[dev->top].shape = dev->shape;
#ifdef DUMP_GROUP_BLENDS
dump_spaces(dev->top, "Group Begin\n");
#endif
dev->top++;
dev->scissor = bbox;
dev->dest = dest;
dev->shape = shape;
dev->blendmode = blendmode | (isolated ? FZ_BLEND_ISOLATED : 0) | (knockout ? FZ_BLEND_KNOCKOUT : 0);
}
static void
fz_draw_stroke_text(fz_device *devp, fz_text *text, fz_stroke_state *stroke, fz_matrix ctm,
fz_colorspace *colorspace, float *color, float alpha)
{
fz_draw_device *dev = devp->user;
unsigned char colorbv[FZ_MAX_COLORS + 1];
float colorfv[FZ_MAX_COLORS];
fz_matrix tm, trm, trunc_trm;
fz_pixmap *glyph;
int i, x, y, gid;
fz_draw_state *state = &dev->stack[dev->top];
fz_colorspace *model = state->dest->colorspace;
fz_bbox scissor = state->scissor;
if (state->blendmode & FZ_BLEND_KNOCKOUT)
state = fz_knockout_begin(dev);
fz_convert_color(dev->ctx, model, colorfv, colorspace, color);
for (i = 0; i < model->n; i++)
colorbv[i] = colorfv[i] * 255;
colorbv[i] = alpha * 255;
tm = text->trm;
for (i = 0; i < text->len; i++)
{
gid = text->items[i].gid;
if (gid < 0)
continue;
tm.e = text->items[i].x;
tm.f = text->items[i].y;
trm = fz_concat(tm, ctm);
x = floorf(trm.e);
y = floorf(trm.f);
trunc_trm = trm;
trunc_trm.e = QUANT(trm.e - floorf(trm.e), HSUBPIX);
trunc_trm.f = QUANT(trm.f - floorf(trm.f), VSUBPIX);
scissor.x0 -= x; scissor.x1 -= x;
scissor.y0 -= y; scissor.y1 -= y;
glyph = fz_render_stroked_glyph(dev->ctx, text->font, gid, trunc_trm, ctm, stroke, scissor);
if (glyph)
{
draw_glyph(colorbv, state->dest, glyph, x, y, state->scissor);
if (state->shape)
draw_glyph(colorbv, state->shape, glyph, x, y, state->scissor);
fz_drop_pixmap(dev->ctx, glyph);
}
else
{
fz_path *path = fz_outline_glyph(dev->ctx, text->font, gid, trm);
if (path)
{
fz_draw_stroke_path(devp, path, stroke, fz_identity, colorspace, color, alpha);
fz_free_path(dev->ctx, path);
}
else
{
fz_warn(dev->ctx, "cannot render glyph");
}
}
}
if (state->blendmode & FZ_BLEND_KNOCKOUT)
fz_knockout_end(dev);
}
static void
fz_draw_fill_image(fz_device *devp, fz_image *image, fz_matrix ctm, float alpha)
{
fz_draw_device *dev = devp->user;
fz_pixmap *converted = NULL;
fz_pixmap *scaled = NULL;
fz_pixmap *pixmap;
fz_pixmap *orig_pixmap;
int after;
int dx, dy;
fz_context *ctx = dev->ctx;
fz_draw_state *state = &dev->stack[dev->top];
fz_colorspace *model = state->dest->colorspace;
fz_bbox clip = fz_pixmap_bbox(ctx, state->dest);
clip = fz_intersect_bbox(clip, state->scissor);
fz_var(scaled);
if (!model)
{
fz_warn(dev->ctx, "cannot render image directly to an alpha mask");
return;
}
if (image->w == 0 || image->h == 0)
return;
dx = sqrtf(ctm.a * ctm.a + ctm.b * ctm.b);
dy = sqrtf(ctm.c * ctm.c + ctm.d * ctm.d);
pixmap = fz_image_to_pixmap(ctx, image, dx, dy);
orig_pixmap = pixmap;
/* convert images with more components (cmyk->rgb) before scaling */
/* convert images with fewer components (gray->rgb after scaling */
/* convert images with expensive colorspace transforms after scaling */
fz_try(ctx)
{
if (state->blendmode & FZ_BLEND_KNOCKOUT)
state = fz_knockout_begin(dev);
after = 0;
if (pixmap->colorspace == fz_device_gray)
after = 1;
if (pixmap->colorspace != model && !after)
{
converted = fz_new_pixmap_with_bbox(ctx, model, fz_pixmap_bbox(ctx, pixmap));
fz_convert_pixmap(ctx, converted, pixmap);
pixmap = converted;
}
if (dx < pixmap->w && dy < pixmap->h)
{
int gridfit = alpha == 1.0f && !(dev->flags & FZ_DRAWDEV_FLAGS_TYPE3);
scaled = fz_transform_pixmap(ctx, pixmap, &ctm, state->dest->x, state->dest->y, dx, dy, gridfit, &clip);
if (!scaled)
{
if (dx < 1)
dx = 1;
if (dy < 1)
dy = 1;
scaled = fz_scale_pixmap(ctx, pixmap, pixmap->x, pixmap->y, dx, dy, NULL);
}
if (scaled)
pixmap = scaled;
}
if (pixmap->colorspace != model)
{
if ((pixmap->colorspace == fz_device_gray && model == fz_device_rgb) ||
(pixmap->colorspace == fz_device_gray && model == fz_device_bgr))
{
/* We have special case rendering code for gray -> rgb/bgr */
}
else
{
converted = fz_new_pixmap_with_bbox(ctx, model, fz_pixmap_bbox(ctx, pixmap));
fz_convert_pixmap(ctx, converted, pixmap);
pixmap = converted;
}
}
fz_paint_image(state->dest, state->scissor, state->shape, pixmap, ctm, alpha * 255);
if (state->blendmode & FZ_BLEND_KNOCKOUT)
fz_knockout_end(dev);
}
fz_always(ctx)
{
fz_drop_pixmap(ctx, scaled);
fz_drop_pixmap(ctx, converted);
fz_drop_pixmap(ctx, orig_pixmap);
}
fz_catch(ctx)
{
fz_rethrow(ctx);
}
}
static void
fz_draw_fill_shade(fz_device *devp, fz_shade *shade, fz_matrix ctm, float alpha)
{
fz_draw_device *dev = devp->user;
fz_rect bounds;
fz_bbox bbox, scissor;
fz_pixmap *dest, *shape;
float colorfv[FZ_MAX_COLORS];
unsigned char colorbv[FZ_MAX_COLORS + 1];
fz_draw_state *state = &dev->stack[dev->top];
fz_colorspace *model = state->dest->colorspace;
bounds = fz_bound_shade(dev->ctx, shade, ctm);
scissor = state->scissor;
bbox = fz_intersect_bbox(fz_bbox_covering_rect(bounds), scissor);
if (fz_is_empty_rect(bbox))
return;
if (!model)
{
fz_warn(dev->ctx, "cannot render shading directly to an alpha mask");
return;
}
if (state->blendmode & FZ_BLEND_KNOCKOUT)
state = fz_knockout_begin(dev);
dest = state->dest;
shape = state->shape;
if (alpha < 1)
{
dest = fz_new_pixmap_with_bbox(dev->ctx, state->dest->colorspace, bbox);
fz_clear_pixmap(dev->ctx, dest);
if (shape)
{
shape = fz_new_pixmap_with_bbox(dev->ctx, NULL, bbox);
fz_clear_pixmap(dev->ctx, shape);
}
}
if (shade->use_background)
{
unsigned char *s;
int x, y, n, i;
fz_convert_color(dev->ctx, model, colorfv, shade->colorspace, shade->background);
for (i = 0; i < model->n; i++)
colorbv[i] = colorfv[i] * 255;
colorbv[i] = 255;
n = dest->n;
for (y = scissor.y0; y < scissor.y1; y++)
{
s = dest->samples + (unsigned int)(((scissor.x0 - dest->x) + (y - dest->y) * dest->w) * dest->n);
for (x = scissor.x0; x < scissor.x1; x++)
{
for (i = 0; i < n; i++)
*s++ = colorbv[i];
}
}
if (shape)
{
for (y = scissor.y0; y < scissor.y1; y++)
{
s = shape->samples + (unsigned int)((scissor.x0 - shape->x) + (y - shape->y) * shape->w);
for (x = scissor.x0; x < scissor.x1; x++)
{
*s++ = 255;
}
}
}
}
fz_paint_shade(dev->ctx, shade, ctm, dest, bbox);
if (shape)
fz_clear_pixmap_rect_with_value(dev->ctx, shape, 255, bbox);
if (alpha < 1)
{
fz_paint_pixmap(state->dest, dest, alpha * 255);
fz_drop_pixmap(dev->ctx, dest);
if (shape)
{
fz_paint_pixmap(state->shape, shape, alpha * 255);
fz_drop_pixmap(dev->ctx, shape);
}
}
if (state->blendmode & FZ_BLEND_KNOCKOUT)
fz_knockout_end(dev);
}
static void
fz_draw_begin_group(fz_device *devp, fz_rect rect, int isolated, int knockout, int blendmode, float alpha)
{
fz_draw_device *dev = devp->user;
fz_bbox bbox;
fz_pixmap *dest, *shape;
fz_context *ctx = dev->ctx;
fz_draw_state *state = &dev->stack[dev->top];
fz_colorspace *model = state->dest->colorspace;
if (state->blendmode & FZ_BLEND_KNOCKOUT)
fz_knockout_begin(dev);
state = push_stack(dev);
bbox = fz_bbox_covering_rect(rect);
bbox = fz_intersect_bbox(bbox, state->scissor);
dest = fz_new_pixmap_with_bbox(ctx, model, bbox);
#ifndef ATTEMPT_KNOCKOUT_AND_ISOLATED
knockout = 0;
isolated = 1;
#endif
if (isolated)
{
fz_clear_pixmap(dev->ctx, dest);
}
else
{
fz_copy_pixmap_rect(dev->ctx, dest, state[0].dest, bbox);
}
if (blendmode == 0 && alpha == 1.0 && isolated)
{
/* We can render direct to any existing shape plane. If there
* isn't one, we don't need to make one. */
shape = state[0].shape;
}
else
{
fz_try(ctx)
{
shape = fz_new_pixmap_with_bbox(ctx, NULL, bbox);
fz_clear_pixmap(dev->ctx, shape);
}
fz_catch(ctx)
{
fz_drop_pixmap(ctx, dest);
fz_rethrow(ctx);
}
}
state[1].alpha = alpha;
#ifdef DUMP_GROUP_BLENDS
dump_spaces(dev->top-1, "Group begin\n");
#endif
state[1].scissor = bbox;
state[1].dest = dest;
state[1].shape = shape;
state[1].blendmode = blendmode | (isolated ? FZ_BLEND_ISOLATED : 0) | (knockout ? FZ_BLEND_KNOCKOUT : 0);
}
static void
fz_draw_fill_image_mask(fz_device *devp, fz_image *image, fz_matrix ctm,
fz_colorspace *colorspace, float *color, float alpha)
{
fz_draw_device *dev = devp->user;
unsigned char colorbv[FZ_MAX_COLORS + 1];
float colorfv[FZ_MAX_COLORS];
fz_pixmap *scaled = NULL;
fz_pixmap *pixmap;
fz_pixmap *orig_pixmap;
int dx, dy;
int i;
fz_context *ctx = dev->ctx;
fz_draw_state *state = &dev->stack[dev->top];
fz_colorspace *model = state->dest->colorspace;
fz_bbox clip = fz_pixmap_bbox(ctx, state->dest);
clip = fz_intersect_bbox(clip, state->scissor);
if (image->w == 0 || image->h == 0)
return;
dx = sqrtf(ctm.a * ctm.a + ctm.b * ctm.b);
dy = sqrtf(ctm.c * ctm.c + ctm.d * ctm.d);
pixmap = fz_image_to_pixmap(ctx, image, dx, dy);
orig_pixmap = pixmap;
fz_try(ctx)
{
if (state->blendmode & FZ_BLEND_KNOCKOUT)
state = fz_knockout_begin(dev);
if (dx < pixmap->w && dy < pixmap->h)
{
int gridfit = alpha == 1.0f && !(dev->flags & FZ_DRAWDEV_FLAGS_TYPE3);
scaled = fz_transform_pixmap(dev->ctx, pixmap, &ctm, state->dest->x, state->dest->y, dx, dy, gridfit, &clip);
if (!scaled)
{
if (dx < 1)
dx = 1;
if (dy < 1)
dy = 1;
scaled = fz_scale_pixmap(dev->ctx, pixmap, pixmap->x, pixmap->y, dx, dy, NULL);
}
if (scaled)
pixmap = scaled;
}
fz_convert_color(dev->ctx, model, colorfv, colorspace, color);
for (i = 0; i < model->n; i++)
colorbv[i] = colorfv[i] * 255;
colorbv[i] = alpha * 255;
fz_paint_image_with_color(state->dest, state->scissor, state->shape, pixmap, ctm, colorbv);
if (scaled)
fz_drop_pixmap(dev->ctx, scaled);
if (state->blendmode & FZ_BLEND_KNOCKOUT)
fz_knockout_end(dev);
}
fz_always(ctx)
{
fz_drop_pixmap(dev->ctx, orig_pixmap);
}
fz_catch(ctx)
{
fz_rethrow(ctx);
}
}
