#include "libpspp/hash-functions.h"
#include "libpspp/hmap.h"
#include "output/render.h"
+#include "output/tab.h"
#include "output/table-item.h"
#include "output/table.h"
entire page can overflow on all four sides!) */
struct hmap overflows;
+ /* Contains "struct render_footnote"s, one for each cell with one or more
+ footnotes.
+
+ 'n_footnotes' is the number of footnotes in the table. There might be
+ more than hmap_count(&page->footnotes) because there can be more than
+ one footnote in a cell. */
+ struct hmap footnotes;
+ size_t n_footnotes;
+
/* If a single column (or row) is too wide (or tall) to fit on a page
reasonably, then render_break_next() will split a single row or column
across multiple render_pages. This member indicates when this has
int overflow[TABLE_N_AXES][2];
};
-/* Returns a hash value for (X,Y). */
+/* Returns a hash value for (,Y). */
static unsigned int
-hash_overflow (int x, int y)
+hash_cell (int x, int y)
{
return hash_int (x + (y << 16), 0);
}
const struct render_overflow *of;
HMAP_FOR_EACH_WITH_HASH (of, struct render_overflow, node,
- hash_overflow (x, y), &page->overflows)
+ hash_cell (x, y), &page->overflows)
if (x == of->d[H] && y == of->d[V])
return of;
}
return NULL;
}
\f
+/* A footnote. */
+struct render_footnote
+ {
+ struct hmap_node node;
+
+ /* The area of the table covered by the cell that has the footnote.
+
+ d[H][0] is the leftmost column.
+ d[H][1] is the rightmost column, plus 1.
+ d[V][0] is the top row.
+ d[V][1] is the bottom row, plus 1.
+
+ The cell in its original table might occupy a larger region. This
+ member reflects the size of the cell in the current render_page, after
+ trimming off any rows or columns due to page-breaking. */
+ int d[TABLE_N_AXES][2];
+
+ /* The index of the first footnote in the cell. */
+ int idx;
+ };
+
+static int
+count_footnotes (const struct table_cell *cell)
+{
+ size_t i;
+ int n;
+
+ n = 0;
+ for (i = 0; i < cell->n_contents; i++)
+ n += cell->contents[i].n_footnotes;
+ return n;
+}
+
+static int
+find_footnote_idx (const struct table_cell *cell, const struct hmap *footnotes)
+{
+ const struct render_footnote *f;
+
+ if (!count_footnotes (cell))
+ return 0;
+
+ HMAP_FOR_EACH_WITH_HASH (f, struct render_footnote, node,
+ hash_cell (cell->d[H][0], cell->d[V][0]), footnotes)
+ if (f->d[H][0] == cell->d[H][0] && f->d[V][0] == cell->d[V][0])
+ return f->idx;
+
+ NOT_REACHED ();
+}
+\f
/* Row or column dimensions. Used to figure the size of a table in
render_page_create() and discarded after that. */
struct render_row
}
hmap_init (&page->overflows);
+ hmap_init (&page->footnotes);
+ page->n_footnotes = 0;
memset (page->is_edge_cutoff, 0, sizeof page->is_edge_cutoff);
return page;
struct render_row *rows;
int table_widths[2];
int *rules[TABLE_N_AXES];
+ struct hmap footnotes;
+ int footnote_idx;
int nr, nc;
int x, y;
int i;
}
/* Calculate minimum and maximum widths of cells that do not
- span multiple columns. */
+ span multiple columns. Assign footnote markers. */
+ hmap_init (&footnotes);
+ footnote_idx = 0;
for (i = 0; i < 2; i++)
columns[i] = xzalloc (nc * sizeof *columns[i]);
for (y = 0; y < nr; y++)
struct table_cell cell;
table_get_cell (table, x, y, &cell);
- if (y == cell.d[V][0] && table_cell_colspan (&cell) == 1)
+ if (y == cell.d[V][0])
{
- int w[2];
- int i;
+ int n;
- params->measure_cell_width (params->aux, &cell, &w[MIN], &w[MAX]);
- for (i = 0; i < 2; i++)
- if (columns[i][x].unspanned < w[i])
- columns[i][x].unspanned = w[i];
+ if (table_cell_colspan (&cell) == 1)
+ {
+ int w[2];
+ int i;
+
+ params->measure_cell_width (params->aux, &cell, footnote_idx,
+ &w[MIN], &w[MAX]);
+ for (i = 0; i < 2; i++)
+ if (columns[i][x].unspanned < w[i])
+ columns[i][x].unspanned = w[i];
+ }
+
+ n = count_footnotes (&cell);
+ if (n > 0)
+ {
+ struct render_footnote *f = xmalloc (sizeof *f);
+ f->d[H][0] = cell.d[H][0];
+ f->d[H][1] = cell.d[H][1];
+ f->d[V][0] = cell.d[V][0];
+ f->d[V][1] = cell.d[V][1];
+ f->idx = footnote_idx;
+ hmap_insert (&footnotes, &f->node, hash_cell (x, y));
+
+ footnote_idx += n;
+ }
}
x = cell.d[H][1];
table_cell_free (&cell);
{
int w[2];
- params->measure_cell_width (params->aux, &cell, &w[MIN], &w[MAX]);
+ params->measure_cell_width (params->aux, &cell,
+ find_footnote_idx (&cell, &footnotes),
+ &w[MIN], &w[MAX]);
for (i = 0; i < 2; i++)
distribute_spanned_width (w[i], &columns[i][cell.d[H][0]],
rules[H], table_cell_colspan (&cell));
if (table_cell_rowspan (&cell) == 1)
{
int w = joined_width (page, H, cell.d[H][0], cell.d[H][1]);
- int h = params->measure_cell_height (params->aux, &cell, w);
+ int h = params->measure_cell_height (
+ params->aux, &cell, find_footnote_idx (&cell, &footnotes), w);
if (h > r->unspanned)
r->unspanned = r->width = h;
}
if (y == cell.d[V][0] && table_cell_rowspan (&cell) > 1)
{
int w = joined_width (page, H, cell.d[H][0], cell.d[H][1]);
- int h = params->measure_cell_height (params->aux, &cell, w);
+ int h = params->measure_cell_height (
+ params->aux, &cell, find_footnote_idx (&cell, &footnotes), w);
distribute_spanned_width (h, &rows[cell.d[V][0]], rules[V],
table_cell_rowspan (&cell));
}
}
}
+ hmap_swap (&page->footnotes, &footnotes);
+ hmap_destroy (&footnotes);
+ page->n_footnotes = footnote_idx;
+
free (rules[H]);
free (rules[V]);
return page->cp[axis][page->n[axis] * 2 + 1];
}
+/* If PAGE is smaller than SIZE along AXIS, inserts extra space to increase
+ its size to SIZE. */
+void
+render_page_stretch (struct render_page *page, enum table_axis axis,
+ int size)
+{
+ int extra = size - render_page_get_size (page, axis);
+ if (extra > 0)
+ {
+ int n = page->n[axis];
+ int error = 0;
+ int adjust = 0;
+ int i;
+
+ for (i = 2; i <= 2 * n + 1; i++)
+ {
+ if (!(i & 1))
+ {
+ error += extra;
+ adjust += error / n;
+ error %= n;
+ }
+ page->cp[axis][i] += adjust;
+ }
+ }
+}
+
int
render_page_get_best_breakpoint (const struct render_page *page, int height)
{
}
}
- page->params->draw_cell (page->params->aux, cell, bb, clip);
+ page->params->draw_cell (page->params->aux, cell,
+ find_footnote_idx (cell, &page->footnotes), bb, clip);
}
/* Draws the cells of PAGE indicated in BB. */
table_get_cell (page->table, x, z, &cell);
w = joined_width (page, H, cell.d[H][0], cell.d[H][1]);
better_pixel = page->params->adjust_break (
- page->params->aux, &cell, w, pixel);
+ page->params->aux, &cell,
+ find_footnote_idx (&cell, &page->footnotes), w, pixel);
x = cell.d[H][1];
table_cell_free (&cell);
struct render_pager
{
- int width;
+ const struct render_params *params;
+
struct render_page **pages;
- size_t cur_page, n_pages;
+ size_t n_pages, allocated_pages;
+
+ size_t cur_page;
struct render_break x_break;
struct render_break y_break;
};
-static void
-render_pager_add_table (struct render_pager *p, struct table *table,
- const struct render_params *params,
- size_t *allocated_pages)
+static struct render_page *
+render_pager_add_table (struct render_pager *p, struct table *table)
{
- 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);
+ struct render_page *page;
+
+ if (p->n_pages >= p->allocated_pages)
+ p->pages = x2nrealloc (p->pages, &p->allocated_pages, sizeof *p->pages);
+ page = p->pages[p->n_pages++] = render_page_create (p->params, table);
+ return page;
}
static void
render_break_init_empty (&p->y_break);
}
+static void
+add_footnote_page (struct render_pager *p, const struct render_page *body)
+{
+ const struct table *table = body->table;
+ int nc = table_nc (table);
+ int nr = table_nr (table);
+ int footnote_idx = 0;
+ struct tab_table *t;
+ int x, y;
+
+ if (!body->n_footnotes)
+ return;
+
+ t = tab_create (2, body->n_footnotes);
+ for (y = 0; y < nr; y++)
+ for (x = 0; x < nc; )
+ {
+ struct table_cell cell;
+
+ table_get_cell (table, x, y, &cell);
+ if (y == cell.d[V][0])
+ {
+ size_t i;
+
+ for (i = 0; i < cell.n_contents; i++)
+ {
+ const struct cell_contents *cc = &cell.contents[i];
+ size_t j;
+
+ for (j = 0; j < cc->n_footnotes; j++)
+ {
+ const char *f = cc->footnotes[j];
+
+ tab_text (t, 0, footnote_idx, TAB_LEFT, "");
+ tab_footnote (t, 0, footnote_idx, "(none)");
+ tab_text (t, 1, footnote_idx, TAB_LEFT, f);
+ footnote_idx++;
+ }
+ }
+ }
+ x = cell.d[H][1];
+ table_cell_free (&cell);
+ }
+ render_pager_add_table (p, &t->table);
+}
+
/* 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)
{
+ const char *caption = table_item_get_caption (table_item);
+ const char *title = table_item_get_title (table_item);
+ const struct render_page *body_page;
+ struct render_page *title_page;
struct render_pager *p;
- size_t allocated_pages = 0;
- const char *caption;
p = xzalloc (sizeof *p);
- p->width = params->size[H];
+ p->params = params;
+
+ /* Title. */
+ title_page = (title
+ ? render_pager_add_table (
+ p, table_from_string (TAB_CENTER | TAB_EMPH, title))
+ : NULL);
+
+ /* Body. */
+ body_page = render_pager_add_table (p, table_ref (table_item_get_table (
+ table_item)));
+ if (title_page && body_page)
+ {
+ int body_page_size = render_page_get_size (body_page, H);
+ render_page_stretch (title_page, H,
+ MIN (body_page_size, params->size[H]));
+ }
- caption = table_item_get_caption (table_item);
+ /* Caption. */
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_add_table (p, table_from_string (TAB_LEFT, caption));
+
+ /* Footnotes. */
+ add_footnote_page (p, body_page);
render_pager_start_page (p);
}
else
render_break_init (&p->y_break,
- render_break_next (&p->x_break, p->width), V);
+ render_break_next (&p->x_break, p->params->size[H]), V);
}
return true;
}
for (i = 0; i < p->n_pages; i++)
{
const struct render_page *page = p->pages[i];
+ int size = render_page_get_size (page, V);
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];
+ clip[V][1] = MIN (y + h, ofs[V] + size) - ofs[V];
if (clip[V][1] > clip[V][0])
render_page_draw_region (page, ofs, clip);
+
+ ofs[V] += size;
}
}
const struct table_cell *);
/* Creates and returns a new render_page whose contents are a subregion of
- PAGE's contents. The new render_page includes cells Z0 through Z1 along
- AXIS, plus any headers on AXIS.
+ PAGE's contents. The new render_page includes cells Z0 through Z1
+ (exclusive) along AXIS, plus any headers on AXIS.
If P0 is nonzero, then it is a number of pixels to exclude from the left or
top (according to AXIS) of cell Z0. Similarly, P1 is a number of pixels to
render_page_select (const struct render_page *page, enum table_axis axis,
int z0, int p0, int z1, int p1)
{
+ const struct render_footnote *f;
struct render_page_selection s;
enum table_axis a = axis;
enum table_axis b = !a;
table_cell_free (&cell);
}
+ /* Copy footnotes from PAGE into subpage. */
+ HMAP_FOR_EACH (f, struct render_footnote, node, &page->footnotes)
+ if ((f->d[a][0] >= z0 && f->d[a][0] < z1)
+ || (f->d[a][1] - 1 >= z0 && f->d[a][1] - 1 < z1))
+ {
+ struct render_footnote *nf = xmalloc (sizeof *nf);
+ nf->d[a][0] = MAX (z0, f->d[a][0]) - z0 + page->h[a][0];
+ nf->d[a][1] = MIN (z1, f->d[a][1]) - z0 + page->h[a][0];
+ nf->d[b][0] = f->d[b][0];
+ nf->d[b][1] = f->d[b][1];
+ nf->idx = f->idx;
+ hmap_insert (&subpage->footnotes, &nf->node,
+ hash_cell (nf->d[H][0], nf->d[V][0]));
+ }
+
return subpage;
}
of = xzalloc (sizeof *of);
cell_to_subpage (s, cell, of->d);
hmap_insert (&s->subpage->overflows, &of->node,
- hash_overflow (of->d[H], of->d[V]));
+ hash_cell (of->d[H], of->d[V]));
old = find_overflow (s->page, cell->d[H][0], cell->d[V][0]);
if (old != NULL)
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