cairo_surface_flush (cairo_get_target (xr->cairo));
}
-static void
-xr_init_caption_cell (const char *caption, struct table_cell *cell,
- struct cell_contents *contents)
-{
- contents->options = TAB_LEFT;
- contents->text = CONST_CAST (char *, caption);
- contents->table = NULL;
- cell->contents = contents;
- cell->n_contents = 1;
- cell->destructor = NULL;
-}
-
-static struct render_pager *
-xr_render_table_item (struct xr_driver *xr, const struct table_item *item,
- int *caption_widthp, int *caption_heightp)
-{
- const char *caption = table_item_get_caption (item);
-
- if (caption != NULL)
- {
- /* XXX doesn't do well with very large captions */
- struct cell_contents contents;
- int min_width, max_width;
- struct table_cell cell;
-
- xr_init_caption_cell (caption, &cell, &contents);
-
- xr_measure_cell_width (xr, &cell, &min_width, &max_width);
- *caption_widthp = MIN (max_width, xr->width);
- *caption_heightp = xr_measure_cell_height (xr, &cell, *caption_widthp);
- }
- else
- *caption_heightp = 0;
-
- return render_pager_create (xr->params, item);
-}
-
static void
xr_submit (struct output_driver *driver, const struct output_item *output_item)
{
}
*height = bb[V][0] - bb_[V][0];
}
-
-static void
-xr_draw_title (struct xr_driver *xr, const char *title,
- int title_width, int title_height)
-{
- struct cell_contents contents;
- struct table_cell cell;
- int bb[TABLE_N_AXES][2];
-
- xr_init_caption_cell (title, &cell, &contents);
- bb[H][0] = 0;
- bb[H][1] = title_width;
- bb[V][0] = 0;
- bb[V][1] = title_height;
- xr_draw_cell (xr, &cell, bb, bb);
-}
\f
struct output_driver_factory pdf_driver_factory =
{ "pdf", "pspp.pdf", xr_pdf_create };
/* Table items. */
struct render_pager *p;
struct xr_driver *xr;
- int title_width;
- int title_height;
};
#define CHART_WIDTH 500
r->item = output_item_ref (item);
r->xr = xr;
xr_set_cairo (xr, cr);
- r->p = xr_render_table_item (xr, to_table_item (item),
- &r->title_width, &r->title_height);
+ r->p = render_pager_create (xr->params, to_table_item (item));
}
else if (is_chart_item (item))
{
{
if (is_table_item (r->item))
{
- int w0 = render_pager_get_size (r->p, H);
- int w1 = r->title_width;
- *w = MAX (w0, w1) / XR_POINT;
- *h = (render_pager_get_size (r->p, V) + r->title_height) / XR_POINT;
+ *w = render_pager_get_size (r->p, H) / XR_POINT;
+ *h = render_pager_get_size (r->p, V) / XR_POINT;
}
else
{
xr_set_cairo (xr, cr);
- if (r->title_height > 0)
- {
- xr->y = 0;
- xr_draw_title (xr, table_item_get_caption (to_table_item (r->item)),
- r->title_width, r->title_height);
- }
-
- xr->y = r->title_height;
+ xr->y = 0;
render_pager_draw_region (r->p,
- x * XR_POINT, (y * XR_POINT) - r->title_height,
+ x * XR_POINT, y * XR_POINT,
w * XR_POINT, h * XR_POINT);
}
else
struct xr_render_fsm fsm;
struct table_item *table_item;
struct render_pager *p;
- int caption_height;
};
static bool
while (render_pager_has_next (ts->p))
{
- int caption_height = ts->caption_height;
int used;
- xr->y += caption_height;
used = render_pager_draw_next (ts->p, xr->length - xr->y);
- xr->y -= caption_height;
if (!used)
{
assert (xr->y > 0);
return true;
}
else
- {
- if (ts->caption_height)
- {
- if (xr->cairo)
- xr_draw_title (xr, table_item_get_caption (ts->table_item),
- xr->width, ts->caption_height);
- ts->caption_height = 0;
- }
- xr->y += caption_height + used;
- }
+ xr->y += used;
}
return false;
}
xr_render_table (struct xr_driver *xr, const struct table_item *table_item)
{
struct xr_table_state *ts;
- int caption_width;
ts = xmalloc (sizeof *ts);
ts->fsm.render = xr_table_render;
if (xr->y > 0)
xr->y += xr->char_height;
- ts->p = xr_render_table_item (xr, table_item,
- &caption_width, &ts->caption_height);
- xr->params->size[V] = xr->length - ts->caption_height;
+ ts->p = render_pager_create (xr->params, table_item);
return &ts->fsm;
}
#include <math.h>
#include <stdio.h>
+#include <stdint.h>
#include <stdlib.h>
#include <string.h>
static struct render_page *render_page_create (const struct render_params *,
const struct table *);
+struct render_page *render_page_ref (const struct render_page *page_);
static void render_page_unref (struct render_page *);
/* Returns the offset in struct render_page's cp[axis] array of the rule with
return page;
}
+/* Increases PAGE's reference count. */
+struct render_page *
+render_page_ref (const struct render_page *page_)
+{
+ struct render_page *page = CONST_CAST (struct render_page *, page_);
+ page->ref_cnt++;
+ return page;
+}
+
/* Decreases PAGE's reference count and destroys PAGE if this causes the
reference count to fall to zero. */
static void
}
static void
-render_rule (const struct render_page *page, const int d[TABLE_N_AXES])
+render_rule (const struct render_page *page, const int ofs[TABLE_N_AXES],
+ const int d[TABLE_N_AXES])
{
enum render_line_style styles[TABLE_N_AXES][2];
enum table_axis a;
{
int bb[TABLE_N_AXES][2];
- bb[H][0] = page->cp[H][d[H]];
- bb[H][1] = page->cp[H][d[H] + 1];
- bb[V][0] = page->cp[V][d[V]];
- bb[V][1] = page->cp[V][d[V] + 1];
+ bb[H][0] = ofs[H] + page->cp[H][d[H]];
+ bb[H][1] = ofs[H] + page->cp[H][d[H] + 1];
+ bb[V][0] = ofs[V] + page->cp[V][d[V]];
+ bb[V][1] = ofs[V] + page->cp[V][d[V] + 1];
page->params->draw_line (page->params->aux, bb, styles);
}
}
static void
-render_cell (const struct render_page *page, const struct table_cell *cell)
+render_cell (const struct render_page *page, const int ofs[TABLE_N_AXES],
+ const struct table_cell *cell)
{
const struct render_overflow *of;
int bb[TABLE_N_AXES][2];
int clip[TABLE_N_AXES][2];
- bb[H][0] = clip[H][0] = page->cp[H][cell->d[H][0] * 2 + 1];
- bb[H][1] = clip[H][1] = page->cp[H][cell->d[H][1] * 2];
- bb[V][0] = clip[V][0] = page->cp[V][cell->d[V][0] * 2 + 1];
- bb[V][1] = clip[V][1] = page->cp[V][cell->d[V][1] * 2];
+ bb[H][0] = clip[H][0] = ofs[H] + page->cp[H][cell->d[H][0] * 2 + 1];
+ bb[H][1] = clip[H][1] = ofs[H] + page->cp[H][cell->d[H][1] * 2];
+ bb[V][0] = clip[V][0] = ofs[V] + page->cp[V][cell->d[V][0] * 2 + 1];
+ bb[V][1] = clip[V][1] = ofs[V] + page->cp[V][cell->d[V][1] * 2];
of = find_overflow (page, cell->d[H][0], cell->d[V][0]);
if (of)
{
bb[axis][0] -= of->overflow[axis][0];
if (cell->d[axis][0] == 0 && !page->is_edge_cutoff[axis][0])
- clip[axis][0] = page->cp[axis][cell->d[axis][0] * 2];
+ clip[axis][0] = ofs[axis] + page->cp[axis][cell->d[axis][0] * 2];
}
if (of->overflow[axis][1])
{
bb[axis][1] += of->overflow[axis][1];
if (cell->d[axis][1] == page->n[axis] && !page->is_edge_cutoff[axis][1])
- clip[axis][1] = page->cp[axis][cell->d[axis][1] * 2 + 1];
+ clip[axis][1] = ofs[axis] + page->cp[axis][cell->d[axis][1] * 2 + 1];
}
}
}
/* Draws the cells of PAGE indicated in BB. */
static void
render_page_draw_cells (const struct render_page *page,
- int bb[TABLE_N_AXES][2])
+ int ofs[TABLE_N_AXES], int bb[TABLE_N_AXES][2])
{
int x, y;
int d[TABLE_N_AXES];
d[H] = x;
d[V] = y;
- render_rule (page, d);
+ render_rule (page, ofs, d);
x++;
}
else
table_get_cell (page->table, x / 2, y / 2, &cell);
if (y / 2 == bb[V][0] / 2 || y / 2 == cell.d[V][0])
- render_cell (page, &cell);
+ render_cell (page, ofs, &cell);
x = rule_ofs (cell.d[H][1]);
table_cell_free (&cell);
}
/* Renders PAGE, by calling the 'draw_line' and 'draw_cell' functions from the
render_params provided to render_page_create(). */
void
-render_page_draw (const struct render_page *page)
+render_page_draw (const struct render_page *page, int ofs[TABLE_N_AXES])
{
int bb[TABLE_N_AXES][2];
bb[V][0] = 0;
bb[V][1] = page->n[V] * 2 + 1;
- render_page_draw_cells (page, bb);
+ render_page_draw_cells (page, ofs, bb);
}
/* Returns the greatest value i, 0 <= i < n, such that cp[i] <= x0. */
render_page_create(). */
void
render_page_draw_region (const struct render_page *page,
- int x, int y, int w, int h)
+ int ofs[TABLE_N_AXES], int clip[TABLE_N_AXES][2])
{
int bb[TABLE_N_AXES][2];
- bb[H][0] = get_clip_min_extent (x, page->cp[H], page->n[H] * 2 + 1);
- bb[H][1] = get_clip_max_extent (x + w, page->cp[H], page->n[H] * 2 + 1);
- bb[V][0] = get_clip_min_extent (y, page->cp[V], page->n[V] * 2 + 1);
- bb[V][1] = get_clip_max_extent (y + h, page->cp[V], page->n[V] * 2 + 1);
+ bb[H][0] = get_clip_min_extent (clip[H][0], page->cp[H], page->n[H] * 2 + 1);
+ bb[H][1] = get_clip_max_extent (clip[H][1], page->cp[H], page->n[H] * 2 + 1);
+ bb[V][0] = get_clip_min_extent (clip[V][0], page->cp[V], page->n[V] * 2 + 1);
+ bb[V][1] = get_clip_max_extent (clip[V][1], page->cp[V], page->n[V] * 2 + 1);
- render_page_draw_cells (page, bb);
+ render_page_draw_cells (page, ofs, bb);
}
\f
/* Breaking up tables to fit on a page. */
int z0, int p0,
int z1, int p1);
-/* Initializes render_break B for breaking PAGE along AXIS.
-
- Ownership of PAGE is transferred to B. The caller must use
- render_page_ref() if it needs to keep a copy of PAGE. */
+/* Initializes render_break B for breaking PAGE along AXIS. */
static void
-render_break_init (struct render_break *b, struct render_page *page,
+render_break_init (struct render_break *b, const struct render_page *page,
enum table_axis axis)
{
- b->page = page;
+ b->page = render_page_ref (page);
b->axis = axis;
b->z = page->h[axis][0];
b->pixel = 0;
struct render_pager
{
int width;
- struct render_page *page;
+ struct render_page **pages;
+ size_t cur_page, n_pages;
struct render_break x_break;
struct render_break y_break;
};
-/* Creates and returns a new render_pager for breaking PAGE into smaller
- chunks. Takes ownership of PAGE. */
+static void
+render_pager_add_table (struct render_pager *p, struct table *table,
+ const struct render_params *params,
+ size_t *allocated_pages)
+{
+ if (p->n_pages >= *allocated_pages)
+ p->pages = x2nrealloc (p->pages, allocated_pages, sizeof *p->pages);
+ p->pages[p->n_pages++] = render_page_create (params, table);
+}
+
+static void
+render_pager_start_page (struct render_pager *p)
+{
+ render_break_init (&p->x_break, p->pages[p->cur_page++], H);
+ render_break_init_empty (&p->y_break);
+}
+
+/* Creates and returns a new render_pager for rendering TABLE_ITEM on the
+ device with the given PARAMS. */
struct render_pager *
render_pager_create (const struct render_params *params,
const struct table_item *table_item)
{
- struct render_pager *p = xmalloc (sizeof *p);
+ struct render_pager *p;
+ size_t allocated_pages = 0;
+ const char *caption;
+
+ p = xzalloc (sizeof *p);
p->width = params->size[H];
- p->page = render_page_create (params, table_item_get_table (table_item));
- render_break_init (&p->x_break, p->page, H);
- render_break_init_empty (&p->y_break);
+
+ caption = table_item_get_caption (table_item);
+ if (caption)
+ render_pager_add_table (p, table_from_string (TAB_LEFT, caption), params,
+ &allocated_pages);
+ render_pager_add_table (p, table_ref (table_item_get_table (table_item)), params,
+ &allocated_pages);
+
+ render_pager_start_page (p);
+
return p;
}
{
if (p)
{
+ size_t i;
+
render_break_destroy (&p->x_break);
render_break_destroy (&p->y_break);
- render_page_unref (p->page);
+ for (i = 0; i < p->n_pages; i++)
+ render_page_unref (p->pages[i]);
+ free (p->pages);
free (p);
}
}
while (!render_break_has_next (&p->y_break))
{
render_break_destroy (&p->y_break);
- if (render_break_has_next (&p->x_break))
+ if (!render_break_has_next (&p->x_break))
{
- struct render_page *x_slice;
-
- x_slice = render_break_next (&p->x_break, p->width);
- render_break_init (&p->y_break, x_slice, V);
+ render_break_destroy (&p->x_break);
+ if (p->cur_page >= p->n_pages)
+ {
+ render_break_init_empty (&p->x_break);
+ render_break_init_empty (&p->y_break);
+ return false;
+ }
+ render_pager_start_page (p);
}
else
- {
- render_break_init_empty (&p->y_break);
- return false;
- }
+ render_break_init (&p->y_break,
+ render_break_next (&p->x_break, p->width), V);
}
return true;
}
int
render_pager_draw_next (struct render_pager *p, int space)
{
- struct render_page *page = (render_pager_has_next (p)
- ? render_break_next (&p->y_break, space)
- : NULL);
- if (page)
+ int ofs[TABLE_N_AXES] = { 0, 0 };
+ size_t start_page = SIZE_MAX;
+
+ while (render_pager_has_next (p))
{
- int used = render_page_get_size (page, V);
+ struct render_page *page;
- render_page_draw (page);
+ if (start_page == p->cur_page)
+ break;
+ start_page = p->cur_page;
+
+ page = render_break_next (&p->y_break, space - ofs[V]);
+ if (!page)
+ break;
+
+ render_page_draw (page, ofs);
+ ofs[V] += render_page_get_size (page, V);
render_page_unref (page);
- return used;
}
- else
- return 0;
+ return ofs[V];
}
/* Draws all of P's content. */
void
render_pager_draw (const struct render_pager *p)
{
- render_page_draw (p->page);
+ render_pager_draw_region (p, 0, 0, INT_MAX, INT_MAX);
}
/* Draws the region of P's content that lies in the region (X,Y)-(X+W,Y+H).
render_pager_draw_region (const struct render_pager *p,
int x, int y, int w, int h)
{
- render_page_draw_region (p->page, x, y, w, h);
+ int ofs[TABLE_N_AXES] = { 0, 0 };
+ int clip[TABLE_N_AXES][2];
+ size_t i;
+
+ clip[H][0] = x;
+ clip[H][1] = x + w;
+ for (i = 0; i < p->n_pages; i++)
+ {
+ const struct render_page *page = p->pages[i];
+
+ clip[V][0] = MAX (y, ofs[V]) - ofs[V];
+ clip[V][1] = MIN (y + h, ofs[V] + render_page_get_size (page, V)) - ofs[V];
+ if (clip[V][1] > clip[V][0])
+ render_page_draw_region (page, ofs, clip);
+ }
}
/* Returns the size of P's content along AXIS; i.e. the content's width if AXIS
int
render_pager_get_size (const struct render_pager *p, enum table_axis axis)
{
- return render_page_get_size (p->page, axis);
+ int size = 0;
+ size_t i;
+
+ for (i = 0; i < p->n_pages; i++)
+ {
+ int subsize = render_page_get_size (p->pages[i], axis);
+ size = axis == H ? MAX (size, subsize) : size + subsize;
+ }
+
+ return size;
}
int
render_pager_get_best_breakpoint (const struct render_pager *p, int height)
{
- return render_page_get_best_breakpoint (p->page, height);
+ int y = 0;
+ size_t i;
+
+ for (i = 0; i < p->n_pages; i++)
+ {
+ int size = render_page_get_size (p->pages[i], V);
+ if (y + size >= height)
+ return render_page_get_best_breakpoint (p->pages[i], height - y) + y;
+ y += size;
+ }
+
+ return height;
}
\f
/* render_page_select() and helpers. */
projects / pspp / commitdiff