Ejemplo n.º 1
0
static void
fz_draw_clip_stroke_path(fz_device *devp, fz_path *path, fz_rect *rect, fz_stroke_state *stroke, fz_matrix ctm)
{
	fz_draw_device *dev = devp->user;
	float expansion = fz_matrix_expansion(ctm);
	float flatness = 0.3f / expansion;
	float linewidth = stroke->linewidth;
	fz_bbox bbox;
	fz_draw_state *state = &dev->stack[dev->top];
	fz_colorspace *model;
	fz_context *ctx = dev->ctx;

	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);

	state = push_stack(dev);
	model = state->dest->colorspace;

	bbox = fz_bound_gel(dev->gel);
	bbox = fz_intersect_bbox(bbox, state->scissor);
	if (rect)
		bbox = fz_intersect_bbox(bbox, fz_bbox_covering_rect(*rect));
	/* SumatraPDF: try to match rendering with and without display list */
	else
		bbox = fz_intersect_bbox(bbox, fz_bbox_covering_rect(fz_bound_path(ctx, path, stroke, ctm)));

	fz_try(ctx)
	{
		state[1].mask = fz_new_pixmap_with_bbox(dev->ctx, NULL, bbox);
		fz_clear_pixmap(dev->ctx, state[1].mask);
		state[1].dest = fz_new_pixmap_with_bbox(dev->ctx, model, bbox);
		fz_clear_pixmap(dev->ctx, state[1].dest);
		if (state->shape)
		{
			state[1].shape = fz_new_pixmap_with_bbox(dev->ctx, NULL, bbox);
			fz_clear_pixmap(dev->ctx, state[1].shape);
		}

		if (!fz_is_empty_rect(bbox))
			fz_scan_convert(dev->gel, 0, bbox, state[1].mask, NULL);

		state[1].blendmode |= FZ_BLEND_ISOLATED;
		state[1].scissor = bbox;
#ifdef DUMP_GROUP_BLENDS
		dump_spaces(dev->top-1, "Clip (stroke) begin\n");
#endif
	}
	fz_catch(ctx)
	{
		emergency_pop_stack(dev, state);
	}
}
Ejemplo n.º 2
0
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;
}
Ejemplo n.º 3
0
char *
fz_copy_selection(fz_context *ctx, fz_text_page *page, fz_bbox rect)
{
	fz_buffer *buffer;
	fz_bbox hitbox;
	fz_text_block *block;
	fz_text_line *line;
	fz_text_span *span;
	int c, i, seen = 0;
	char *s;

	int x0 = rect.x0;
	int x1 = rect.x1;
	int y0 = rect.y0;
	int y1 = rect.y1;

	buffer = fz_new_buffer(ctx, 1024);

	for (block = page->blocks; block < page->blocks + page->len; block++)
	{
		for (line = block->lines; line < block->lines + block->len; line++)
		{
			for (span = line->spans; span < line->spans + line->len; span++)
			{
				if (seen)
				{
					fz_write_buffer_byte(ctx, buffer, '\n');
				}

				seen = 0;

				for (i = 0; i < span->len; i++)
				{
					hitbox = fz_bbox_covering_rect(span->text[i].bbox);
					c = span->text[i].c;
					if (c < 32)
						c = '?';
					if (hitbox.x1 >= x0 && hitbox.x0 <= x1 && hitbox.y1 >= y0 && hitbox.y0 <= y1)
					{
						fz_write_buffer_rune(ctx, buffer, c);
						seen = 1;
					}
				}

				seen = (seen && span + 1 == line->spans + line->len);
			}
		}
	}

	fz_write_buffer_byte(ctx, buffer, 0);

	s = (char*)buffer->data;
	fz_free(ctx, buffer);
	return s;
}
Ejemplo n.º 4
0
static void
fz_bbox_add_rect(fz_device *dev, fz_rect rect, int clip)
{
	fz_bbox_data *data = dev->user;

	if (0 < data->top && data->top <= STACK_SIZE)
		rect = fz_intersect_rect(rect, data->stack[data->top-1]);
	if (!clip && data->top <= STACK_SIZE && !data->ignore)
		*data->result = fz_union_bbox(*data->result, fz_bbox_covering_rect(rect));
	if (clip && ++data->top <= STACK_SIZE)
		data->stack[data->top-1] = rect;
}
Ejemplo n.º 5
0
int
fz_highlight_selection(fz_context *ctx, fz_text_page *page, fz_bbox rect, fz_bbox *hit_bbox, int hit_max)
{
	fz_bbox linebox, charbox;
	fz_text_block *block;
	fz_text_line *line;
	fz_text_span *span;
	int i, hit_count;

	int x0 = rect.x0;
	int x1 = rect.x1;
	int y0 = rect.y0;
	int y1 = rect.y1;

	hit_count = 0;

	for (block = page->blocks; block < page->blocks + page->len; block++)
	{
		for (line = block->lines; line < block->lines + block->len; line++)
		{
			linebox = fz_empty_bbox;
			for (span = line->spans; span < line->spans + line->len; span++)
			{
				for (i = 0; i < span->len; i++)
				{
					charbox = fz_bbox_covering_rect(span->text[i].bbox);
					if (charbox.x1 >= x0 && charbox.x0 <= x1 && charbox.y1 >= y0 && charbox.y0 <= y1)
					{
						if (charbox.y0 != linebox.y0 || fz_absi(charbox.x0 - linebox.x1) > 5)
						{
							if (!fz_is_empty_bbox(linebox) && hit_count < hit_max)
								hit_bbox[hit_count++] = linebox;
							linebox = charbox;
						}
						else
						{
							linebox = fz_union_bbox(linebox, charbox);
						}
					}
				}
			}
			if (!fz_is_empty_bbox(linebox) && hit_count < hit_max)
				hit_bbox[hit_count++] = linebox;
		}
	}

	return hit_count;
}
Ejemplo n.º 6
0
static void
fz_draw_begin_mask(fz_device *devp, fz_rect rect, int luminosity, fz_colorspace *colorspace, float *colorfv)
{
	fz_draw_device *dev = devp->user;
	fz_pixmap *dest;
	fz_bbox bbox;
	fz_draw_state *state = push_stack(dev);
	fz_pixmap *shape = state->shape;

	bbox = fz_bbox_covering_rect(rect);
	bbox = fz_intersect_bbox(bbox, state->scissor);
	dest = fz_new_pixmap_with_bbox(dev->ctx, fz_device_gray, bbox);
	if (state->shape)
	{
		/* FIXME: If we ever want to support AIS true, then we
		 * probably want to create a shape pixmap here, using:
		 * shape = fz_new_pixmap_with_bbox(NULL, bbox);
		 * then, in the end_mask code, we create the mask from this
		 * rather than dest.
		 */
		shape = NULL;
	}

	if (luminosity)
	{
		float bc;
		if (!colorspace)
			colorspace = fz_device_gray;
		fz_convert_color(dev->ctx, fz_device_gray, &bc, colorspace, colorfv);
		fz_clear_pixmap_with_value(dev->ctx, dest, bc * 255);
		if (shape)
			fz_clear_pixmap_with_value(dev->ctx, shape, 255);
	}
	else
	{
		fz_clear_pixmap(dev->ctx, dest);
		if (shape)
			fz_clear_pixmap(dev->ctx, shape);
	}

#ifdef DUMP_GROUP_BLENDS
	dump_spaces(dev->top-1, "Mask begin\n");
#endif
	state[1].scissor = bbox;
	state[1].dest = dest;
	state[1].shape = shape;
	state[1].luminosity = luminosity;
}
Ejemplo n.º 7
0
static void
fz_draw_clip_path(fz_device *devp, fz_path *path, fz_rect *rect, int even_odd, fz_matrix ctm)
{
	fz_draw_device *dev = devp->user;
	float expansion = fz_matrix_expansion(ctm);
	float flatness = 0.3f / expansion;
	fz_bbox bbox;
	fz_draw_state *state = push_stack(dev);
	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 (rect)
		bbox = fz_intersect_bbox(bbox, fz_bbox_covering_rect(*rect));

	if (fz_is_empty_rect(bbox) || fz_is_rect_gel(dev->gel))
	{
		state[1].scissor = bbox;
		state[1].mask = NULL;
#ifdef DUMP_GROUP_BLENDS
		dump_spaces(dev->top-1, "Clip (rectangular) begin\n");
#endif
		return;
	}

	state[1].mask = fz_new_pixmap_with_bbox(dev->ctx, NULL, bbox);
	fz_clear_pixmap(dev->ctx, state[1].mask);
	state[1].dest = fz_new_pixmap_with_bbox(dev->ctx, model, bbox);
	fz_clear_pixmap(dev->ctx, state[1].dest);
	if (state[1].shape)
	{
		state[1].shape = fz_new_pixmap_with_bbox(dev->ctx, NULL, bbox);
		fz_clear_pixmap(dev->ctx, state[1].shape);
	}

	fz_scan_convert(dev->gel, even_odd, bbox, state[1].mask, NULL);

	state[1].blendmode |= FZ_BLEND_ISOLATED;
	state[1].scissor = bbox;
#ifdef DUMP_GROUP_BLENDS
	dump_spaces(dev->top-1, "Clip (non-rectangular) begin\n");
#endif
}
Ejemplo n.º 8
0
static void
fz_draw_clip_text(fz_device *devp, fz_text *text, fz_matrix ctm, int accumulate)
{
	fz_draw_device *dev = devp->user;
	fz_context *ctx = dev->ctx;
	fz_bbox bbox;
	fz_pixmap *mask, *dest, *shape;
	fz_matrix tm, trm, trunc_trm;
	fz_pixmap *glyph;
	int i, x, y, gid;
	fz_draw_state *state;
	fz_colorspace *model;

	/* If accumulate == 0 then this text object is guaranteed complete */
	/* If accumulate == 1 then this text object is the first (or only) in a sequence */
	/* If accumulate == 2 then this text object is a continuation */

	state = push_stack(dev);
	model = state->dest->colorspace;

	if (accumulate == 0)
	{
		/* make the mask the exact size needed */
		bbox = fz_bbox_covering_rect(fz_bound_text(dev->ctx, text, ctm));
		bbox = fz_intersect_bbox(bbox, state->scissor);
	}
	else
	{
		/* be conservative about the size of the mask needed */
		bbox = state->scissor;
	}

	if (accumulate == 0 || accumulate == 1)
	{
		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);
		}
		else
			shape = NULL;

		state[1].blendmode |= FZ_BLEND_ISOLATED;
		state[1].scissor = bbox;
		state[1].dest = dest;
		state[1].mask = mask;
		state[1].shape = shape;
#ifdef DUMP_GROUP_BLENDS
		dump_spaces(dev->top-1, "Clip (text) begin\n");
#endif
	}
	else
	{
		mask = state->mask;
		dev->top--;
	}

	if (!fz_is_empty_rect(bbox) && mask)
	{
		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);

			glyph = fz_render_glyph(dev->ctx, text->font, gid, trunc_trm, model, bbox);
			if (glyph)
			{
				draw_glyph(NULL, mask, glyph, x, y, bbox);
				if (state[1].shape)
					draw_glyph(NULL, state[1].shape, glyph, x, y, bbox);
				fz_drop_pixmap(dev->ctx, glyph);
			}
			else
			{
				fz_path *path = fz_outline_glyph(dev->ctx, text->font, gid, trm);
				if (path)
				{
					fz_pixmap *old_dest;
					float white = 1;

					state = &dev->stack[dev->top];
					old_dest = state[0].dest;
					state[0].dest = state[0].mask;
					state[0].mask = NULL;
					fz_try(ctx)
					{
						fz_draw_fill_path(devp, path, 0, fz_identity, fz_device_gray, &white, 1);
					}
					fz_always(ctx)
					{
						state[0].mask = state[0].dest;
						state[0].dest = old_dest;
						fz_free_path(dev->ctx, path);
					}
					fz_catch(ctx)
					{
						fz_rethrow(ctx);
					}
				}
				else
				{
					fz_warn(dev->ctx, "cannot render glyph for clipping");
				}
			}
		}
Ejemplo n.º 9
0
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);
}
Ejemplo n.º 10
0
static void
fz_draw_clip_stroke_text(fz_device *devp, fz_text *text, fz_stroke_state *stroke, fz_matrix ctm)
{
	fz_draw_device *dev = devp->user;
	fz_bbox bbox;
	fz_pixmap *mask, *dest, *shape;
	fz_matrix tm, trm;
	fz_pixmap *glyph;
	int i, x, y, gid;
	fz_draw_state *state = push_stack(dev);
	fz_colorspace *model = state->dest->colorspace;

	/* make the mask the exact size needed */
	bbox = fz_bbox_covering_rect(fz_bound_text(dev->ctx, text, ctm));
	bbox = fz_intersect_bbox(bbox, state->scissor);

	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);
	}
	else
		shape = state->shape;

	state[1].blendmode |= FZ_BLEND_ISOLATED;
	state[1].scissor = bbox;
	state[1].dest = dest;
	state[1].shape = shape;
	state[1].mask = mask;
#ifdef DUMP_GROUP_BLENDS
	dump_spaces(dev->top-1, "Clip (stroke text) begin\n");
#endif

	if (!fz_is_empty_rect(bbox))
	{
		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(dev->ctx, text->font, gid, trm, ctm, stroke, bbox);
			if (glyph)
			{
				draw_glyph(NULL, mask, glyph, x, y, bbox);
				if (shape)
					draw_glyph(NULL, shape, glyph, x, y, bbox);
				fz_drop_pixmap(dev->ctx, glyph);
			}
			else
			{
				fz_warn(dev->ctx, "cannot draw glyph for clipping (unimplemented case)");
				// TODO: outline/non-cached case
			}
		}
	}
}
Ejemplo n.º 11
0
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);
}
Ejemplo n.º 12
0
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;
}
Ejemplo n.º 13
0
void
fz_run_display_list(fz_display_list *list, fz_device *dev, fz_matrix top_ctm, fz_bbox scissor, fz_cookie *cookie)
{
	fz_display_node *node;
	fz_matrix ctm;
	fz_rect rect;
	fz_bbox bbox;
	int clipped = 0;
	int tiled = 0;
	int empty;
	int progress = 0;
	
	//LOGE("Count %d", count);
	if (cookie)
	{
		cookie->progress_max = list->last - list->first;
		cookie->progress = 0;
	}

	for (node = list->first; node; node = node->next)
	{
		/* Check the cookie for aborting */
		if (cookie)
		{
			if (cookie->abort)
				break;
			cookie->progress = progress++;
		}

		/* cull objects to draw using a quick visibility test */

		if (tiled || node->cmd == FZ_CMD_BEGIN_TILE || node->cmd == FZ_CMD_END_TILE)
		{
			empty = 0;
		}
		else
		{
			bbox = fz_bbox_covering_rect(fz_transform_rect(top_ctm, node->rect));
			bbox = fz_intersect_bbox(bbox, scissor);
			empty = fz_is_empty_bbox(bbox);
		}

		if (clipped || empty)
		{
			switch (node->cmd)
			{
			case FZ_CMD_CLIP_PATH:
			case FZ_CMD_CLIP_STROKE_PATH:
			case FZ_CMD_CLIP_STROKE_TEXT:
			case FZ_CMD_CLIP_IMAGE_MASK:
			case FZ_CMD_BEGIN_MASK:
			case FZ_CMD_BEGIN_GROUP:
				clipped++;
				continue;
			case FZ_CMD_CLIP_TEXT:
				/* Accumulated text has no extra pops */
				if (node->flag != 2)
					clipped++;
				continue;
			case FZ_CMD_POP_CLIP:
			case FZ_CMD_END_GROUP:
				if (!clipped)
					goto visible;
				clipped--;
				continue;
			case FZ_CMD_END_MASK:
				if (!clipped)
					goto visible;
				continue;
			default:
				continue;
			}
		}

visible:
		ctm = fz_concat(node->ctm, top_ctm);

		switch (node->cmd)
		{
		case FZ_CMD_FILL_PATH:
			fz_fill_path(dev, node->item.path, node->flag, ctm,
				node->colorspace, node->color, node->alpha);
			break;
		case FZ_CMD_STROKE_PATH:
			fz_stroke_path(dev, node->item.path, node->stroke, ctm,
				node->colorspace, node->color, node->alpha);
			break;
		case FZ_CMD_CLIP_PATH:
		{
			fz_rect trect = fz_transform_rect(top_ctm, node->rect);
			fz_clip_path(dev, node->item.path, &trect, node->flag, ctm);
			break;
		}
		case FZ_CMD_CLIP_STROKE_PATH:
		{
			fz_rect trect = fz_transform_rect(top_ctm, node->rect);
			fz_clip_stroke_path(dev, node->item.path, &trect, node->stroke, ctm);
			break;
		}
		case FZ_CMD_FILL_TEXT:
			fz_fill_text(dev, node->item.text, ctm,
				node->colorspace, node->color, node->alpha);
			break;
		case FZ_CMD_STROKE_TEXT:
			fz_stroke_text(dev, node->item.text, node->stroke, ctm,
				node->colorspace, node->color, node->alpha);
			break;
		case FZ_CMD_CLIP_TEXT:
			fz_clip_text(dev, node->item.text, ctm, node->flag);
			break;
		case FZ_CMD_CLIP_STROKE_TEXT:
			fz_clip_stroke_text(dev, node->item.text, node->stroke, ctm);
			break;
		case FZ_CMD_IGNORE_TEXT:
			fz_ignore_text(dev, node->item.text, ctm);
			break;
		case FZ_CMD_FILL_SHADE:
			fz_fill_shade(dev, node->item.shade, ctm, node->alpha);
			break;
		case FZ_CMD_FILL_IMAGE:
			fz_fill_image(dev, node->item.image, ctm, node->alpha);
			break;
		case FZ_CMD_FILL_IMAGE_MASK:
			fz_fill_image_mask(dev, node->item.image, ctm,
				node->colorspace, node->color, node->alpha);
			break;
		case FZ_CMD_CLIP_IMAGE_MASK:
		{
			fz_rect trect = fz_transform_rect(top_ctm, node->rect);
			fz_clip_image_mask(dev, node->item.image, &trect, ctm);
			break;
		}
		case FZ_CMD_POP_CLIP:
			fz_pop_clip(dev);
			break;
		case FZ_CMD_BEGIN_MASK:
			rect = fz_transform_rect(top_ctm, node->rect);
			fz_begin_mask(dev, rect, node->flag, node->colorspace, node->color);
			break;
		case FZ_CMD_END_MASK:
			fz_end_mask(dev);
			break;
		case FZ_CMD_BEGIN_GROUP:
			rect = fz_transform_rect(top_ctm, node->rect);
			fz_begin_group(dev, rect,
				(node->flag & ISOLATED) != 0, (node->flag & KNOCKOUT) != 0,
				node->item.blendmode, node->alpha);
			break;
		case FZ_CMD_END_GROUP:
			fz_end_group(dev);
			break;
		case FZ_CMD_BEGIN_TILE:
			tiled++;
			rect.x0 = node->color[2];
			rect.y0 = node->color[3];
			rect.x1 = node->color[4];
			rect.y1 = node->color[5];
			fz_begin_tile(dev, node->rect, rect,
				node->color[0], node->color[1], ctm);
			break;
		case FZ_CMD_END_TILE:
			tiled--;
			fz_end_tile(dev);
			break;
		}
	}
	//free(node_array);
}