示例#1
0
void pdfapp_inverthit(pdfapp_t *app)
{
	fz_bbox hitbox, bbox;
	fz_matrix ctm;
	int i;

	if (app->hit < 0)
		return;

	hitbox = fz_empty_bbox;
	ctm = pdfapp_viewctm(app);

	for (i = app->hit; i < app->hit + app->hitlen; i++)
	{
		bbox = bboxcharat(app->page_text, i);
		if (fz_is_empty_rect(bbox))
		{
			if (!fz_is_empty_rect(hitbox))
				pdfapp_invert(app, fz_transform_bbox(ctm, hitbox));
			hitbox = fz_empty_bbox;
		}
		else
		{
			hitbox = fz_union_bbox(hitbox, bbox);
		}
	}

	if (!fz_is_empty_rect(hitbox))
		pdfapp_invert(app, fz_transform_bbox(ctm, hitbox));
}
示例#2
0
int
fz_highlight_selection(fz_context *ctx, fz_stext_page *page, fz_rect rect, fz_rect *hit_bbox, int hit_max)
{
	fz_rect linebox, charbox;
	fz_stext_block *block;
	fz_stext_line *line;
	fz_stext_span *span;
	int i, block_num, hit_count;

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

	hit_count = 0;

	for (block_num = 0; block_num < page->len; block_num++)
	{
		if (page->blocks[block_num].type != FZ_PAGE_BLOCK_TEXT)
			continue;
		block = page->blocks[block_num].u.text;
		for (line = block->lines; line < block->lines + block->len; line++)
		{
			linebox = fz_empty_rect;
			for (span = line->first_span; span; span = span->next)
			{
				for (i = 0; i < span->len; i++)
				{
					fz_stext_char_bbox(ctx, &charbox, span, i);
					if (charbox.x1 >= x0 && charbox.x0 <= x1 && charbox.y1 >= y0 && charbox.y0 <= y1)
					{
						if (charbox.y0 != linebox.y0 || fz_abs(charbox.x0 - linebox.x1) > 5)
						{
							if (!fz_is_empty_rect(&linebox) && hit_count < hit_max)
								hit_bbox[hit_count++] = linebox;
							linebox = charbox;
						}
						else
						{
							fz_union_rect(&linebox, &charbox);
						}
					}
				}
			}
			if (!fz_is_empty_rect(&linebox) && hit_count < hit_max)
				hit_bbox[hit_count++] = linebox;
		}
	}

	return hit_count;
}
fz_rect
fz_intersect_rect(fz_rect a, fz_rect b)
{
	fz_rect r;
	if (fz_is_infinite_rect(a)) return b;
	if (fz_is_infinite_rect(b)) return a;
	if (fz_is_empty_rect(a)) return fz_empty_rect;
	if (fz_is_empty_rect(b)) return fz_empty_rect;
	r.x0 = MAX(a.x0, b.x0);
	r.y0 = MAX(a.y0, b.y0);
	r.x1 = MIN(a.x1, b.x1);
	r.y1 = MIN(a.y1, b.y1);
	return (r.x1 < r.x0 || r.y1 < r.y0) ? fz_empty_rect : r;
}
fz_bbox
fz_union_bbox(fz_bbox a, fz_bbox b)
{
	fz_bbox r;
	if (fz_is_infinite_rect(a)) return a;
	if (fz_is_infinite_rect(b)) return b;
	if (fz_is_empty_rect(a)) return b;
	if (fz_is_empty_rect(b)) return a;
	r.x0 = MIN(a.x0, b.x0);
	r.y0 = MIN(a.y0, b.y0);
	r.x1 = MAX(a.x1, b.x1);
	r.y1 = MAX(a.y1, b.y1);
	return r;
}
fz_bbox
fz_intersect_bbox(fz_bbox a, fz_bbox b)
{
	fz_bbox r;
	if (fz_is_infinite_rect(a)) return b;
	if (fz_is_infinite_rect(b)) return a;
	if (fz_is_empty_rect(a)) return fz_empty_bbox;
	if (fz_is_empty_rect(b)) return fz_empty_bbox;
	r.x0 = MAX(a.x0, b.x0);
	r.y0 = MAX(a.y0, b.y0);
	r.x1 = MIN(a.x1, b.x1);
	r.y1 = MIN(a.y1, b.y1);
	return (r.x1 < r.x0 || r.y1 < r.y0) ? fz_empty_bbox : r;
}
示例#6
0
int
fz_highlight_selection(fz_context *ctx, fz_text_page *page, fz_rect rect, fz_rect *hit_bbox, int hit_max)
{
	fz_rect linebox, charbox;
	fz_text_block *block;
	fz_text_line *line;
	int i, hit_count;

	float x0 = rect.x0;
	float x1 = rect.x1;
	float y0 = rect.y0;
	float 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++)
		{
			int span_num;
			linebox = fz_empty_rect;
			for (span_num = 0; span_num < line->len; span_num++)
			{
				fz_text_span *span = line->spans[span_num];
				for (i = 0; i < span->len; i++)
				{
					fz_text_char_bbox(&charbox, span, i);
					if (charbox.x1 >= x0 && charbox.x0 <= x1 && charbox.y1 >= y0 && charbox.y0 <= y1)
					{
						if (charbox.y0 != linebox.y0 || fz_abs(charbox.x0 - linebox.x1) > 5)
						{
							if (!fz_is_empty_rect(&linebox) && hit_count < hit_max)
								hit_bbox[hit_count++] = linebox;
							linebox = charbox;
						}
						else
						{
							fz_union_rect(&linebox, &charbox);
						}
					}
				}
			}
			if (!fz_is_empty_rect(&linebox) && hit_count < hit_max)
				hit_bbox[hit_count++] = linebox;
		}
	}

	return hit_count;
}
示例#7
0
fz_bbox
fz_union_bbox(fz_bbox a, fz_bbox b)
{
    fz_bbox r;
    /* Check for empty box before infinite box */
    if (fz_is_empty_rect(a)) return b;
    if (fz_is_empty_rect(b)) return a;
    if (fz_is_infinite_rect(a)) return a;
    if (fz_is_infinite_rect(b)) return b;
    r.x0 = fz_mini(a.x0, b.x0);
    r.y0 = fz_mini(a.y0, b.y0);
    r.x1 = fz_maxi(a.x1, b.x1);
    r.y1 = fz_maxi(a.y1, b.y1);
    return r;
}
示例#8
0
fz_rect
fz_intersect_rect(fz_rect a, fz_rect b)
{
    fz_rect r;
    /* Check for empty box before infinite box */
    if (fz_is_empty_rect(a)) return fz_empty_rect;
    if (fz_is_empty_rect(b)) return fz_empty_rect;
    if (fz_is_infinite_rect(a)) return b;
    if (fz_is_infinite_rect(b)) return a;
    r.x0 = fz_max(a.x0, b.x0);
    r.y0 = fz_max(a.y0, b.y0);
    r.x1 = fz_min(a.x1, b.x1);
    r.y1 = fz_min(a.y1, b.y1);
    return (r.x1 < r.x0 || r.y1 < r.y0) ? fz_empty_rect : r;
}
示例#9
0
fz_bbox
fz_intersect_bbox(fz_bbox a, fz_bbox b)
{
    fz_bbox r;
    /* Check for empty box before infinite box */
    if (fz_is_empty_rect(a)) return fz_empty_bbox;
    if (fz_is_empty_rect(b)) return fz_empty_bbox;
    if (fz_is_infinite_rect(a)) return b;
    if (fz_is_infinite_rect(b)) return a;
    r.x0 = fz_maxi(a.x0, b.x0);
    r.y0 = fz_maxi(a.y0, b.y0);
    r.x1 = fz_mini(a.x1, b.x1);
    r.y1 = fz_mini(a.y1, b.y1);
    return (r.x1 < r.x0 || r.y1 < r.y0) ? fz_empty_bbox : r;
}
示例#10
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 = &dev->stack[dev->top];
	fz_colorspace *model;
	fz_context *ctx = dev->ctx;

	fz_reset_gel(dev->gel, state->scissor);
	fz_flatten_fill_path(dev->gel, path, ctm, flatness);
	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);
	bbox = fz_intersect_bbox(bbox, fz_bbox_from_rect(rect));
	/* SumatraPDF: try to match rendering with and without display list */
	if (fz_is_infinite_rect(rect))
		bbox = fz_intersect_bbox(bbox, fz_bbox_from_rect(fz_bound_path(ctx, path, NULL, ctm)));

	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;
	}

	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[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
	}
	fz_catch(ctx)
	{
		emergency_pop_stack(dev, state);
	}
}
示例#11
0
static void
fz_draw_fill_path(void *user, fz_path *path, int even_odd, fz_matrix ctm,
	fz_colorspace *colorspace, float *color, float alpha)
{
	fz_draw_device *dev = user;
	fz_colorspace *model = dev->dest->colorspace;
	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_reset_gel(dev->gel, dev->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, dev->scissor);

	if (fz_is_empty_rect(bbox))
		return;

	fz_convert_color(colorspace, color, model, colorfv);
	for (i = 0; i < model->n; i++)
		colorbv[i] = colorfv[i] * 255;
	colorbv[i] = alpha * 255;

	fz_scan_convert(dev->gel, even_odd, bbox, dev->dest, colorbv);
}
示例#12
0
int
fz_search_stext_page(fz_context *ctx, fz_stext_page *text, const char *needle, fz_rect *hit_bbox, int hit_max)
{
	int pos, len, i, n, hit_count;

	if (strlen(needle) == 0)
		return 0;

	hit_count = 0;
	len = textlen_stext(ctx, text);
	pos = 0;
	while (pos < len)
	{
		n = match_stext(ctx, text, needle, pos);
		if (n)
		{
			fz_rect linebox = fz_empty_rect;
			for (i = 0; i < n; i++)
			{
				fz_rect charbox;
				bboxat(ctx, text, pos + i, &charbox);
				if (!fz_is_empty_rect(&charbox))
				{
					if (charbox.y0 != linebox.y0 || fz_abs(charbox.x0 - linebox.x1) > 5)
					{
						if (!fz_is_empty_rect(&linebox) && hit_count < hit_max)
							hit_bbox[hit_count++] = linebox;
						linebox = charbox;
					}
					else
					{
						fz_union_rect(&linebox, &charbox);
					}
				}
			}
			if (!fz_is_empty_rect(&linebox) && hit_count < hit_max)
				hit_bbox[hit_count++] = linebox;
			pos += n;
		}
		else
		{
			pos += 1;
		}
	}

	return hit_count;
}
示例#13
0
int
fz_highlight_selection(fz_context *ctx, fz_stext_page *page, fz_rect rect, fz_rect *hit_bbox, int hit_max)
{
	fz_rect linebox, charbox;
	fz_stext_block *block;
	fz_stext_line *line;
	fz_stext_char *ch;
	int hit_count;

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

	hit_count = 0;

	for (block = page->first_block; block; block = block->next)
	{
		if (block->type != FZ_STEXT_BLOCK_TEXT)
			continue;
		for (line = block->u.t.first_line; line; line = line->next)
		{
			linebox = fz_empty_rect;
			for (ch = line->first_char; ch; ch = ch->next)
			{
				fz_stext_char_bbox(ctx, &charbox, line, ch);
				if (charbox.x1 >= x0 && charbox.x0 <= x1 && charbox.y1 >= y0 && charbox.y0 <= y1)
				{
					if (charbox.y0 != linebox.y0 || fz_abs(charbox.x0 - linebox.x1) > 5)
					{
						if (!fz_is_empty_rect(&linebox) && hit_count < hit_max)
							hit_bbox[hit_count++] = linebox;
						linebox = charbox;
					}
					else
					{
						fz_union_rect(&linebox, &charbox);
					}
				}
			}
			if (!fz_is_empty_rect(&linebox) && hit_count < hit_max)
				hit_bbox[hit_count++] = linebox;
		}
	}

	return hit_count;
}
示例#14
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);
	}
}
示例#15
0
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);
}
示例#16
0
static void
fz_draw_clip_stroke_path(fz_context *ctx, void *user, fz_path *path, fz_rect *rect, fz_stroke_state *stroke, fz_matrix ctm)
{
	fz_draw_device *dev = user;
	fz_colorspace *model = dev->dest->colorspace;
	float expansion = fz_matrix_expansion(ctm);
	float flatness = 0.3f / expansion;
	float linewidth = stroke->linewidth;
	fz_pixmap *mask, *dest, *shape;
	fz_bbox bbox;

	if (dev->top == dev->stack_max)
		fz_grow_stack(dev);

	if (linewidth * expansion < 0.1f)
		linewidth = 1 / expansion;

	fz_reset_gel(dev->gel, dev->scissor);
	if (stroke->dash_len > 0)
		fz_flatten_dash_path(ctx, dev->gel, path, stroke, ctm, flatness, linewidth);
	else
		fz_flatten_stroke_path(ctx, dev->gel, path, stroke, ctm, flatness, linewidth);
	fz_sort_gel(dev->gel);

	bbox = fz_bound_gel(dev->gel);
	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;

	if (!fz_is_empty_rect(bbox))
		fz_scan_convert(dev->gel, 0, bbox, mask, NULL);

	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;
#ifdef DUMP_GROUP_BLENDS
	dump_spaces(dev->top, "Clip (stroke) begin\n");
#endif
	dev->top++;
}
示例#17
0
fz_bbox
fz_translate_bbox(fz_bbox a, int xoff, int yoff)
{
    fz_bbox b;

    if (fz_is_empty_rect(a)) return a;
    if (fz_is_infinite_rect(a)) return a;
    ADD_WITH_SAT(b.x0, a.x0, xoff);
    ADD_WITH_SAT(b.y0, a.y0, yoff);
    ADD_WITH_SAT(b.x1, a.x1, xoff);
    ADD_WITH_SAT(b.y1, a.y1, yoff);
    return b;
}
示例#18
0
static void
fz_draw_clip_path(void *user, fz_path *path, fz_rect *rect, int even_odd, fz_matrix ctm)
{
	fz_draw_device *dev = user;
	fz_colorspace *model = dev->dest->colorspace;
	float expansion = fz_matrix_expansion(ctm);
	float flatness = 0.3f / expansion;
	fz_pixmap *mask, *dest;
	fz_bbox bbox;

	if (dev->top == STACK_SIZE)
	{
		fz_warn("assert: too many buffers on stack");
		return;
	}

	fz_reset_gel(dev->gel, dev->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, dev->scissor);
	if (rect) {
		bbox = fz_intersect_bbox(bbox, fz_round_rect(*rect));
	}

	if (fz_is_empty_rect(bbox) || fz_is_rect_gel(dev->gel))
	{
		dev->stack[dev->top].scissor = dev->scissor;
		dev->stack[dev->top].mask = NULL;
		dev->stack[dev->top].dest = NULL;
		dev->scissor = bbox;
		dev->top++;
		return;
	}

	mask = fz_new_pixmap_with_rect(NULL, bbox);
	dest = fz_new_pixmap_with_rect(model, bbox);

	fz_clear_pixmap(mask);
	fz_clear_pixmap(dest);

	fz_scan_convert(dev->gel, even_odd, bbox, mask, NULL);

	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++;
}
示例#19
0
static float
calcbboxoverlap(fz_bbox bbox1, fz_bbox bbox2)
{
	fz_bbox intersect = fz_intersect_bbox(bbox1, bbox2);
	int area1, area2, area3;

	if (fz_is_empty_rect(intersect))
		return 0;

	area1 = (bbox1.x1 - bbox1.x0) * (bbox1.y1 - bbox1.y0);
	area2 = (bbox2.x1 - bbox2.x0) * (bbox2.y1 - bbox2.y0);
	area3 = (intersect.x1 - intersect.x0) * (intersect.y1 - intersect.y0);

	return 1.0 * area3 / MAX(area1, area2);
}
示例#20
0
static void
fz_draw_clip_stroke_path(void *user, fz_path *path, fz_rect *rect, fz_stroke_state *stroke, fz_matrix ctm)
{
	fz_draw_device *dev = user;
	fz_colorspace *model = dev->dest->colorspace;
	float expansion = fz_matrix_expansion(ctm);
	float flatness = 0.3f / expansion;
	float linewidth = stroke->linewidth;
	fz_pixmap *mask, *dest;
	fz_bbox bbox;

	if (dev->top == STACK_SIZE)
	{
		fz_warn("assert: too many buffers on stack");
		return;
	}

	if (linewidth * expansion < 0.1f)
		linewidth = 1 / expansion;

	fz_reset_gel(dev->gel, dev->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, 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);

	if (!fz_is_empty_rect(bbox))
		fz_scan_convert(dev->gel, 0, bbox, mask, NULL);

	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++;
}
示例#21
0
static float
calc_bbox_overlap(const fz_rect *bbox1, const fz_rect *bbox2)
{
	float area1, area2, area3;
	fz_rect intersect = *bbox1;

	fz_intersect_rect(&intersect, bbox2);
	if (fz_is_empty_rect(&intersect))
		return 0;

	area1 = (bbox1->x1 - bbox1->x0) * (bbox1->y1 - bbox1->y0);
	area2 = (bbox2->x1 - bbox2->x0) * (bbox2->y1 - bbox2->y0);
	area3 = (intersect.x1 - intersect.x0) * (intersect.y1 - intersect.y0);

	return area3 / fz_max(area1, area2);
}
示例#22
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
}
示例#23
0
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);
}
示例#24
0
文件: text.c 项目: mandeep57/mupdf
fz_rect *
fz_bound_text(fz_context *ctx, const fz_text *text, const fz_stroke_state *stroke, const fz_matrix *ctm, fz_rect *bbox)
{
	fz_text_span *span;
	fz_matrix tm, trm;
	fz_rect gbox;
	int i;

	*bbox = fz_empty_rect;

	for (span = text->head; span; span = span->next)
	{
		if (span->len > 0)
		{
			tm = span->trm;
			for (i = 0; i < span->len; i++)
			{
				if (span->items[i].gid >= 0)
				{
					tm.e = span->items[i].x;
					tm.f = span->items[i].y;
					fz_concat(&trm, &tm, ctm);
					fz_bound_glyph(ctx, span->font, span->items[i].gid, &trm, &gbox);
					fz_union_rect(bbox, &gbox);
				}
			}

		}
	}

	if (!fz_is_empty_rect(bbox))
	{
		if (stroke)
			fz_adjust_rect_for_stroke(ctx, bbox, stroke, ctm);

		/* Compensate for the glyph cache limited positioning precision */
		bbox->x0 -= 1;
		bbox->y0 -= 1;
		bbox->x1 += 1;
		bbox->y1 += 1;
	}

	return bbox;
}
示例#25
0
static void
fz_draw_stroke_path(void *user, fz_path *path, 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;
	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;

	if (linewidth * expansion < 0.1f)
		linewidth = 1 / expansion;

	fz_reset_gel(dev->gel, dev->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, dev->scissor);

	if (fz_is_empty_rect(bbox))
		return;

	fz_convert_color(colorspace, color, model, colorfv);
	for (i = 0; i < model->n; i++)
		colorbv[i] = colorfv[i] * 255;
	colorbv[i] = alpha * 255;

	fz_scan_convert(dev->gel, 0, bbox, dev->dest, colorbv);
}
示例#26
0
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);
}
示例#27
0
static void
fz_draw_clip_stroke_text(fz_context *ctx, void *user, fz_text *text, fz_stroke_state *stroke, fz_matrix ctm)
{
	fz_draw_device *dev = user;
	fz_colorspace *model = dev->dest->colorspace;
	fz_bbox bbox;
	fz_pixmap *mask, *dest, *shape;
	fz_matrix tm, trm;
	fz_pixmap *glyph;
	int i, x, y, gid;

	if (dev->top == dev->stack_max)
		fz_grow_stack(dev);

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

	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 = dev->shape;

	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;
#ifdef DUMP_GROUP_BLENDS
	dump_spaces(dev->top, "Clip (stroke text) begin\n");
#endif
	dev->top++;

	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(ctx, dev->cache, text->font, gid, trm, ctm, stroke);
			if (glyph)
			{
				draw_glyph(NULL, mask, glyph, x, y, bbox);
				if (dev->shape)
					draw_glyph(NULL, dev->shape, glyph, x, y, bbox);
				fz_drop_pixmap(ctx, glyph);
			}
		}
	}
}
示例#28
0
static void
fz_draw_clip_text(fz_context *ctx, void *user, fz_text *text, fz_matrix ctm, int accumulate)
{
	fz_draw_device *dev = user;
	fz_colorspace *model = dev->dest->colorspace;
	fz_bbox bbox;
	fz_pixmap *mask, *dest, *shape;
	fz_matrix tm, trm;
	fz_pixmap *glyph;
	int i, x, y, gid;

	/* 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 */

	if (dev->top == dev->stack_max)
		fz_grow_stack(dev);

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

	if (accumulate == 0 || accumulate == 1)
	{
		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;

		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;
#ifdef DUMP_GROUP_BLENDS
		dump_spaces(dev->top, "Clip (text) begin\n");
#endif
		dev->top++;
	}
	else
	{
		mask = dev->stack[dev->top-1].mask;
	}

	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_glyph(ctx, dev->cache, text->font, gid, trm, model);
			if (glyph)
			{
				draw_glyph(NULL, mask, glyph, x, y, bbox);
				if (dev->shape)
					draw_glyph(NULL, dev->shape, glyph, x, y, bbox);
				fz_drop_pixmap(ctx, glyph);
			}
		}
	}
}
示例#29
0
static void
fz_draw_clip_path(fz_context *ctx, void *user, fz_path *path, fz_rect *rect, int even_odd, fz_matrix ctm)
{
	fz_draw_device *dev = user;
	fz_colorspace *model = dev->dest->colorspace;
	float expansion = fz_matrix_expansion(ctm);
	float flatness = 0.3f / expansion;
	fz_pixmap *mask, *dest, *shape;
	fz_bbox bbox;

	if (dev->top == dev->stack_max)
		fz_grow_stack(dev);

	fz_reset_gel(dev->gel, dev->scissor);
	fz_flatten_fill_path(ctx, dev->gel, path, ctm, flatness);
	fz_sort_gel(dev->gel);

	bbox = fz_bound_gel(dev->gel);
	bbox = fz_intersect_bbox(bbox, dev->scissor);
	if (rect)
		bbox = fz_intersect_bbox(bbox, fz_round_rect(*rect));

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

	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;

	fz_scan_convert(dev->gel, even_odd, bbox, mask, NULL);

	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;
#ifdef DUMP_GROUP_BLENDS
	dump_spaces(dev->top, "Clip (non-rectangular) begin\n");
#endif
	dev->top++;
}
示例#30
0
static int _pdf_doc_load(struct _pdf_doc *self, mume_stream_t *stm)
{
    fz_error error;
    fz_stream *fzstm;
    fz_rect *mbox;
    fz_obj *page_obj, *box_obj;
    int i, c;

    _pdf_doc_clear(self);

    fzstm = fz_new_stream(stm, _pdf_stream_read, _pdf_stream_close);
    mume_stream_reference(stm);
    fzstm->seek = _pdf_stream_seek;
    error = pdf_open_xref_with_stream(&self->xref, fzstm, NULL);
    fz_close(fzstm);
    if (error) {
        mume_error(("Read xref failed\n", error));
        return 0;
    }

    assert(!pdf_needs_password(self->xref));

    /* Load meta information. */
    error = pdf_load_page_tree(self->xref);
    if (error) {
        mume_error(("Cannot load page tree\n"));
        return 0;
    }

    c = pdf_count_pages(self->xref);
    self->glyph_cache = fz_new_glyph_cache();
    self->pages = calloc_abort(c, sizeof(pdf_page*));
    self->disps = calloc_abort(c, sizeof(fz_display_list*));
    self->media_boxes = malloc_abort(c * sizeof(fz_rect));
    self->page_rotates = malloc_abort(c * sizeof(int));

    /* Extract each pages' media box and rotation. */
    for (i = 0; i < c; ++i) {
        mbox = self->media_boxes + i;
        page_obj = self->xref->page_objs[i];
        if (!page_obj) {
            *mbox = fz_empty_rect;
            continue;
        }

        box_obj = fz_dict_gets(page_obj, "MediaBox");
        *mbox = pdf_to_rect(box_obj);
        if (fz_is_empty_rect(*mbox)) {
            fz_warn("Cannot find page bounds, guessing page bounds.");
            mbox->x1 = 612;
            mbox->y1 = 792;
        }

        box_obj = fz_dict_gets(page_obj, "CropBox");
        if (fz_is_array(box_obj))
            *mbox = fz_intersect_rect(*mbox, pdf_to_rect(box_obj));

        self->page_rotates[i] = fz_to_int(
            fz_dict_gets(page_obj, "Rotate"));

        if (self->page_rotates[i] % 90)
            self->page_rotates[i] = 0;
    }

    return 1;
}