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_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_clip_image_mask(fz_context *ctx, void *user, fz_pixmap *image, fz_rect *rect, fz_matrix ctm)
{
fz_draw_device *dev = user;
fz_colorspace *model = dev->dest->colorspace;
fz_bbox bbox;
fz_pixmap *mask, *dest, *shape;
fz_pixmap *scaled = NULL;
int dx, dy;
if (dev->top == dev->stack_max)
fz_grow_stack(dev);
#ifdef DUMP_GROUP_BLENDS
dump_spaces(dev->top, "Clip (image mask) begin\n");
#endif
if (image->w == 0 || image->h == 0)
{
dev->stack[dev->top].scissor = dev->scissor;
dev->stack[dev->top].mask = NULL;
dev->stack[dev->top].dest = NULL;
dev->stack[dev->top].blendmode = dev->blendmode;
dev->scissor = fz_empty_bbox;
dev->top++;
return;
}
bbox = fz_round_rect(fz_transform_rect(ctm, fz_unit_rect));
bbox = fz_intersect_bbox(bbox, dev->scissor);
if (rect)
bbox = fz_intersect_bbox(bbox, fz_round_rect(*rect));
mask = fz_new_pixmap_with_rect(ctx, NULL, bbox);
fz_clear_pixmap(mask);
dest = fz_new_pixmap_with_rect(ctx, model, bbox);
/* FIXME: See note #1 */
fz_clear_pixmap(dest);
if (dev->shape)
{
shape = fz_new_pixmap_with_rect(ctx, NULL, bbox);
fz_clear_pixmap(shape);
}
else
shape = NULL;
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 = !(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_paint_image(mask, bbox, dev->shape, image, ctm, 255);
if (scaled)
fz_drop_pixmap(ctx, scaled);
dev->stack[dev->top].scissor = dev->scissor;
dev->stack[dev->top].mask = mask;
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->scissor = bbox;
dev->dest = dest;
dev->shape = shape;
dev->top++;
}
static void
fz_draw_fill_text(fz_device *devp, fz_text *text, fz_matrix ctm,
fz_colorspace *colorspace, float *color, float alpha)
{
fz_draw_device *dev = devp->user;
unsigned char colorbv[FZ_MAX_COLORS + 1];
unsigned char shapebv;
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;
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);
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_glyph(dev->ctx, text->font, gid, trunc_trm, model, scissor);
if (glyph)
{
if (glyph->n == 1)
{
draw_glyph(colorbv, state->dest, glyph, x, y, state->scissor);
if (state->shape)
draw_glyph(&shapebv, state->shape, glyph, x, y, state->scissor);
}
else
{
fz_matrix ctm = {glyph->w, 0.0, 0.0, glyph->h, x + glyph->x, y + glyph->y};
fz_paint_image(state->dest, state->scissor, state->shape, glyph, ctm, alpha * 255);
}
fz_drop_pixmap(dev->ctx, glyph);
}
else
{
fz_path *path = fz_outline_glyph(dev->ctx, text->font, gid, trm);
if (path)
{
fz_draw_fill_path(devp, path, 0, 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_clip_image_mask(fz_device *devp, fz_image *image, fz_rect *rect, fz_matrix ctm)
{
fz_draw_device *dev = devp->user;
fz_context *ctx = dev->ctx;
fz_bbox bbox;
fz_pixmap *mask = NULL;
fz_pixmap *dest = NULL;
fz_pixmap *shape = NULL;
fz_pixmap *scaled = NULL;
fz_pixmap *pixmap;
fz_pixmap *orig_pixmap;
int dx, dy;
fz_draw_state *state = push_stack(dev);
fz_colorspace *model = state->dest->colorspace;
fz_bbox clip = fz_pixmap_bbox(ctx, state->dest);
clip = fz_intersect_bbox(clip, state->scissor);
fz_var(mask);
fz_var(dest);
fz_var(shape);
if (image->w == 0 || image->h == 0)
{
#ifdef DUMP_GROUP_BLENDS
dump_spaces(dev->top-1, "Clip (image mask) (empty) begin\n");
#endif
state[1].scissor = fz_empty_bbox;
state[1].mask = NULL;
return;
}
#ifdef DUMP_GROUP_BLENDS
dump_spaces(dev->top-1, "Clip (image mask) begin\n");
#endif
bbox = fz_bbox_covering_rect(fz_transform_rect(ctm, fz_unit_rect));
bbox = fz_intersect_bbox(bbox, state->scissor);
if (rect)
bbox = fz_intersect_bbox(bbox, fz_bbox_covering_rect(*rect));
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)
{
mask = fz_new_pixmap_with_bbox(dev->ctx, NULL, bbox);
fz_clear_pixmap(dev->ctx, mask);
dest = fz_new_pixmap_with_bbox(dev->ctx, model, bbox);
fz_clear_pixmap(dev->ctx, dest);
if (state->shape)
{
shape = fz_new_pixmap_with_bbox(dev->ctx, NULL, bbox);
fz_clear_pixmap(dev->ctx, shape);
}
if (dx < pixmap->w && dy < pixmap->h)
{
int gridfit = !(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_paint_image(mask, bbox, state->shape, pixmap, ctm, 255);
}
fz_always(ctx)
{
fz_drop_pixmap(ctx, scaled);
fz_drop_pixmap(ctx, orig_pixmap);
}
fz_catch(ctx)
{
fz_drop_pixmap(ctx, shape);
fz_drop_pixmap(ctx, dest);
fz_drop_pixmap(ctx, mask);
fz_rethrow(ctx);
}
state[1].blendmode |= FZ_BLEND_ISOLATED;
state[1].scissor = bbox;
state[1].dest = dest;
state[1].shape = shape;
state[1].mask = mask;
}
static void
fz_draw_clip_image_mask(void *user, fz_pixmap *image, fz_rect *rect, fz_matrix ctm)
{
fz_draw_device *dev = user;
fz_colorspace *model = dev->dest->colorspace;
fz_bbox bbox;
fz_pixmap *mask, *dest;
fz_pixmap *scaled = NULL;
int dx, dy;
if (dev->top == STACK_SIZE)
{
fz_warn("assert: too many buffers on stack");
return;
}
if (image->w == 0 || image->h == 0)
{
dev->stack[dev->top].scissor = dev->scissor;
dev->stack[dev->top].mask = NULL;
dev->stack[dev->top].dest = NULL;
dev->scissor = fz_empty_bbox;
dev->top++;
return;
}
bbox = fz_round_rect(fz_transform_rect(ctm, fz_unit_rect));
bbox = fz_intersect_bbox(bbox, dev->scissor);
if (rect)
bbox = fz_intersect_bbox(bbox, fz_round_rect(*rect));
mask = fz_new_pixmap_with_rect(NULL, bbox);
dest = fz_new_pixmap_with_rect(model, bbox);
fz_clear_pixmap(mask);
fz_clear_pixmap(dest);
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)
{
scaled = fz_transform_pixmap(image, &ctm, dev->dest->x, dev->dest->y, dx, dy);
if (scaled == NULL)
{
if (dx < 1)
dx = 1;
if (dy < 1)
dy = 1;
scaled = fz_scale_pixmap(image, image->x, image->y, dx, dy);
}
if (scaled != NULL)
image = scaled;
}
fz_paint_image(mask, bbox, image, ctm, 255);
if (scaled)
fz_drop_pixmap(scaled);
dev->stack[dev->top].scissor = dev->scissor;
dev->stack[dev->top].mask = mask;
dev->stack[dev->top].dest = dev->dest;
dev->scissor = bbox;
dev->dest = dest;
dev->top++;
}