char *subtitle;
cairo_t *cairo;
int page_number; /* Current page number. */
- int y;
+ int x, y;
struct xr_render_fsm *fsm;
+ int nest;
};
static const struct output_driver_class cairo_driver_class;
static void xr_draw_cell (void *, const struct table_cell *,
int bb[TABLE_N_AXES][2],
int clip[TABLE_N_AXES][2]);
+static int xr_adjust_break (void *, const struct table_cell *,
+ int width, int height);
static struct xr_render_fsm *xr_render_output_item (
struct xr_driver *, const struct output_item *);
xr->params->draw_line = xr_draw_line;
xr->params->measure_cell_width = xr_measure_cell_width;
xr->params->measure_cell_height = xr_measure_cell_height;
+ xr->params->adjust_break = xr_adjust_break;
xr->params->draw_cell = xr_draw_cell;
xr->params->aux = xr;
xr->params->size[H] = xr->width;
cairo_surface_flush (cairo_get_target (xr->cairo));
}
-static void
-xr_init_caption_cell (const char *caption, struct table_cell *cell)
-{
- cell->contents = caption;
- cell->options = TAB_LEFT;
- cell->destructor = NULL;
-}
-
-static struct render_page *
-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 */
- int min_width, max_width;
- struct table_cell cell;
-
- xr_init_caption_cell (caption, &cell);
-
- 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_page_create (xr->params, table_item_get_table (item));
-}
-
static void
xr_submit (struct output_driver *driver, const struct output_item *output_item)
{
xr->page_number++;
xr->cairo = cairo;
- xr->y = 0;
+ xr->x = xr->y = 0;
xr_driver_run_fsm (xr);
}
static void
xr_layout_cell (struct xr_driver *, const struct table_cell *,
int bb[TABLE_N_AXES][2], int clip[TABLE_N_AXES][2],
- int *width, int *height);
+ int *width, int *height, int *brk);
static void
dump_line (struct xr_driver *xr, int x0, int y0, int x1, int y1)
{
cairo_new_path (xr->cairo);
- cairo_move_to (xr->cairo, xr_to_pt (x0), xr_to_pt (y0 + xr->y));
- cairo_line_to (xr->cairo, xr_to_pt (x1), xr_to_pt (y1 + xr->y));
+ cairo_move_to (xr->cairo, xr_to_pt (x0 + xr->x), xr_to_pt (y0 + xr->y));
+ cairo_line_to (xr->cairo, xr_to_pt (x1 + xr->x), xr_to_pt (y1 + xr->y));
+ cairo_stroke (xr->cairo);
+}
+
+static void UNUSED
+dump_rectangle (struct xr_driver *xr, int x0, int y0, int x1, int y1)
+{
+ cairo_new_path (xr->cairo);
+ cairo_move_to (xr->cairo, xr_to_pt (x0 + xr->x), xr_to_pt (y0 + xr->y));
+ cairo_line_to (xr->cairo, xr_to_pt (x1 + xr->x), xr_to_pt (y0 + xr->y));
+ cairo_line_to (xr->cairo, xr_to_pt (x1 + xr->x), xr_to_pt (y1 + xr->y));
+ cairo_line_to (xr->cairo, xr_to_pt (x0 + xr->x), xr_to_pt (y1 + xr->y));
+ cairo_close_path (xr->cairo);
cairo_stroke (xr->cairo);
}
bb[V][0] = 0;
bb[V][1] = INT_MAX;
clip[H][0] = clip[H][1] = clip[V][0] = clip[V][1] = 0;
- xr_layout_cell (xr, cell, bb, clip, max_width, &h);
+ xr_layout_cell (xr, cell, bb, clip, max_width, &h, NULL);
bb[H][1] = 1;
- xr_layout_cell (xr, cell, bb, clip, min_width, &h);
+ xr_layout_cell (xr, cell, bb, clip, min_width, &h, NULL);
}
static int
bb[V][0] = 0;
bb[V][1] = INT_MAX;
clip[H][0] = clip[H][1] = clip[V][0] = clip[V][1] = 0;
- xr_layout_cell (xr, cell, bb, clip, &w, &h);
+ xr_layout_cell (xr, cell, bb, clip, &w, &h, NULL);
return h;
}
int bb[TABLE_N_AXES][2], int clip[TABLE_N_AXES][2])
{
struct xr_driver *xr = xr_;
- int w, h;
+ int w, h, brk;
+
+ xr_layout_cell (xr, cell, bb, clip, &w, &h, &brk);
+}
+
+static int
+xr_adjust_break (void *xr_, const struct table_cell *cell,
+ int width, int height)
+{
+ struct xr_driver *xr = xr_;
+ int bb[TABLE_N_AXES][2];
+ int clip[TABLE_N_AXES][2];
+ int w, h, brk;
- xr_layout_cell (xr, cell, bb, clip, &w, &h);
+ if (xr_measure_cell_height (xr_, cell, width) < height)
+ return -1;
+
+ bb[H][0] = 0;
+ bb[H][1] = width;
+ bb[V][0] = 0;
+ bb[V][1] = height;
+ clip[H][0] = clip[H][1] = clip[V][0] = clip[V][1] = 0;
+ xr_layout_cell (xr, cell, bb, clip, &w, &h, &brk);
+ return brk;
}
\f
static void
-xr_layout_cell (struct xr_driver *xr, const struct table_cell *cell,
- int bb[TABLE_N_AXES][2], int clip[TABLE_N_AXES][2],
- int *width, int *height)
+xr_clip (struct xr_driver *xr, int clip[TABLE_N_AXES][2])
+{
+ if (clip[H][1] != INT_MAX || clip[V][1] != INT_MAX)
+ {
+ double x0 = xr_to_pt (clip[H][0] + xr->x);
+ double y0 = xr_to_pt (clip[V][0] + xr->y);
+ double x1 = xr_to_pt (clip[H][1] + xr->x);
+ double y1 = xr_to_pt (clip[V][1] + xr->y);
+
+ cairo_rectangle (xr->cairo, x0, y0, x1 - x0, y1 - y0);
+ cairo_clip (xr->cairo);
+ }
+}
+
+static int
+xr_layout_cell_text (struct xr_driver *xr,
+ const struct cell_contents *contents,
+ int bb[TABLE_N_AXES][2], int clip[TABLE_N_AXES][2],
+ int y, int *widthp, int *brk)
{
+ unsigned int options = contents->options;
struct xr_font *font;
int w, h;
- font = (cell->options & TAB_FIX ? &xr->fonts[XR_FONT_FIXED]
- : cell->options & TAB_EMPH ? &xr->fonts[XR_FONT_EMPHASIS]
+ font = (options & TAB_FIX ? &xr->fonts[XR_FONT_FIXED]
+ : options & TAB_EMPH ? &xr->fonts[XR_FONT_EMPHASIS]
: &xr->fonts[XR_FONT_PROPORTIONAL]);
- pango_layout_set_text (font->layout, cell->contents, -1);
+ pango_layout_set_text (font->layout, contents->text, -1);
pango_layout_set_alignment (
font->layout,
- ((cell->options & TAB_ALIGNMENT) == TAB_RIGHT ? PANGO_ALIGN_RIGHT
- : (cell->options & TAB_ALIGNMENT) == TAB_LEFT ? PANGO_ALIGN_LEFT
+ ((options & TAB_ALIGNMENT) == TAB_RIGHT ? PANGO_ALIGN_RIGHT
+ : (options & TAB_ALIGNMENT) == TAB_LEFT ? PANGO_ALIGN_LEFT
: PANGO_ALIGN_CENTER));
pango_layout_set_width (
font->layout,
if (clip[H][0] != clip[H][1])
{
cairo_save (xr->cairo);
+ xr_clip (xr, clip);
+ cairo_translate (xr->cairo,
+ xr_to_pt (bb[H][0] + xr->x),
+ xr_to_pt (y + xr->y));
+ pango_cairo_show_layout (xr->cairo, font->layout);
- if (clip[H][1] != INT_MAX || clip[V][1] != INT_MAX)
+ /* If enabled, this draws a blue rectangle around the extents of each
+ line of text, which can be rather useful for debugging layout
+ issues. */
+ if (0)
{
- double x0 = xr_to_pt (clip[H][0]);
- double y0 = xr_to_pt (clip[V][0] + xr->y);
- double x1 = xr_to_pt (clip[H][1]);
- double y1 = xr_to_pt (clip[V][1] + xr->y);
-
- cairo_rectangle (xr->cairo, x0, y0, x1 - x0, y1 - y0);
- cairo_clip (xr->cairo);
+ PangoLayoutIter *iter;
+ iter = pango_layout_get_iter (font->layout);
+ do
+ {
+ PangoRectangle extents;
+
+ pango_layout_iter_get_line_extents (iter, &extents, NULL);
+ cairo_save (xr->cairo);
+ cairo_set_source_rgb (xr->cairo, 1, 0, 0);
+ dump_rectangle (xr,
+ pango_to_xr (extents.x) - xr->x,
+ pango_to_xr (extents.y) - xr->y,
+ pango_to_xr (extents.x + extents.width) - xr->x,
+ pango_to_xr (extents.y + extents.height) - xr->y);
+ cairo_restore (xr->cairo);
+ }
+ while (pango_layout_iter_next_line (iter));
+ pango_layout_iter_free (iter);
}
- cairo_translate (xr->cairo,
- xr_to_pt (bb[H][0]),
- xr_to_pt (bb[V][0] + xr->y));
- pango_cairo_show_layout (xr->cairo, font->layout);
cairo_restore (xr->cairo);
}
pango_layout_get_size (font->layout, &w, &h);
- *width = pango_to_xr (w);
- *height = pango_to_xr (h);
+ w = pango_to_xr (w);
+ h = pango_to_xr (h);
+ if (w > *widthp)
+ *widthp = w;
+ if (y + h >= bb[V][1])
+ {
+ PangoLayoutIter *iter;
+ int best UNUSED = 0;
+
+ /* Choose a breakpoint between lines instead of in the middle of one. */
+ iter = pango_layout_get_iter (font->layout);
+ do
+ {
+ PangoRectangle extents;
+ int y0, y1;
+ int bottom;
+
+ pango_layout_iter_get_line_extents (iter, NULL, &extents);
+ pango_layout_iter_get_line_yrange (iter, &y0, &y1);
+ extents.x = pango_to_xr (extents.x);
+ extents.y = pango_to_xr (y0);
+ extents.width = pango_to_xr (extents.width);
+ extents.height = pango_to_xr (y1 - y0);
+ bottom = y + extents.y + extents.height;
+ if (bottom < bb[V][1])
+ {
+ if (brk && clip[H][0] != clip[H][1])
+ best = bottom;
+ *brk = bottom;
+ }
+ else
+ break;
+ }
+ while (pango_layout_iter_next_line (iter));
+
+ /* If enabled, draws a green line across the chosen breakpoint, which can
+ be useful for debugging issues with breaking. */
+ if (0)
+ {
+ if (best && !xr->nest)
+ {
+ cairo_save (xr->cairo);
+ cairo_set_source_rgb (xr->cairo, 0, 1, 0);
+ dump_line (xr, -xr->left_margin, best, xr->width + xr->right_margin, best);
+ cairo_restore (xr->cairo);
+ }
+ }
+ }
+ return y + h;
+}
+
+static int
+xr_layout_cell_subtable (struct xr_driver *xr,
+ const struct cell_contents *contents,
+ int bb[TABLE_N_AXES][2],
+ int clip[TABLE_N_AXES][2], int *widthp, int *brk)
+{
+ int single_width, double_width;
+ struct render_params params;
+ struct render_pager *p;
+ int r[TABLE_N_AXES][2];
+ int width, height;
+ int i;
+
+ params.draw_line = xr_draw_line;
+ params.measure_cell_width = xr_measure_cell_width;
+ params.measure_cell_height = xr_measure_cell_height;
+ params.adjust_break = NULL;
+ params.draw_cell = xr_draw_cell;
+ params.aux = xr;
+ params.size[H] = bb[H][1] - bb[H][0];
+ params.size[V] = bb[V][1] - bb[V][0];
+ params.font_size[H] = xr->char_width;
+ params.font_size[V] = xr->char_height;
+
+ single_width = 2 * xr->line_gutter + xr->line_width;
+ double_width = 2 * xr->line_gutter + xr->line_space + 2 * xr->line_width;
+ for (i = 0; i < TABLE_N_AXES; i++)
+ {
+ params.line_widths[i][RENDER_LINE_NONE] = 0;
+ params.line_widths[i][RENDER_LINE_SINGLE] = single_width;
+ params.line_widths[i][RENDER_LINE_DOUBLE] = double_width;
+ }
+
+ xr->nest++;
+ p = render_pager_create (¶ms, contents->table);
+ width = render_pager_get_size (p, H);
+ height = render_pager_get_size (p, V);
+ if (bb[V][0] + height >= bb[V][1])
+ *brk = bb[V][0] + render_pager_get_best_breakpoint (p, bb[V][1] - bb[V][0]);
+
+ /* r = intersect(bb, clip) - bb. */
+ for (i = 0; i < TABLE_N_AXES; i++)
+ {
+ r[i][0] = MAX (bb[i][0], clip[i][0]) - bb[i][0];
+ r[i][1] = MIN (bb[i][1], clip[i][1]) - bb[i][0];
+ }
+
+ if (r[H][0] < r[H][1] && r[V][0] < r[V][1])
+ {
+ unsigned int alignment = contents->options & TAB_ALIGNMENT;
+ int save_x = xr->x;
+
+ cairo_save (xr->cairo);
+ xr_clip (xr, clip);
+ xr->x += bb[H][0];
+ if (alignment == TAB_RIGHT)
+ xr->x += params.size[H] - width;
+ else if (alignment == TAB_CENTER)
+ xr->x += (params.size[H] - width) / 2;
+ xr->y += bb[V][0];
+ render_pager_draw_region (p, r[H][0], r[V][0],
+ r[H][1] - r[H][0], r[V][1] - r[V][0]);
+ xr->y -= bb[V][0];
+ xr->x = save_x;
+ cairo_restore (xr->cairo);
+ }
+ render_pager_destroy (p);
+ xr->nest--;
+
+ if (width > *widthp)
+ *widthp = width;
+ return bb[V][0] + height;
}
static void
-xr_draw_title (struct xr_driver *xr, const char *title,
- int title_width, int title_height)
+xr_layout_cell (struct xr_driver *xr, const struct table_cell *cell,
+ int bb_[TABLE_N_AXES][2], int clip[TABLE_N_AXES][2],
+ int *width, int *height, int *brk)
{
- struct table_cell cell;
int bb[TABLE_N_AXES][2];
+ size_t i;
- xr_init_caption_cell (title, &cell);
- 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);
+ *width = 0;
+ *height = 0;
+ if (brk)
+ *brk = 0;
+
+ memcpy (bb, bb_, sizeof bb);
+
+ /* If enabled, draws a blue rectangle around the cell extents, which can be
+ useful for debugging layout. */
+ if (0)
+ {
+ if (clip[H][0] != clip[H][1])
+ {
+ int offset = (xr->nest) * XR_POINT;
+
+ cairo_save (xr->cairo);
+ cairo_set_source_rgb (xr->cairo, 0, 0, 1);
+ dump_rectangle (xr,
+ bb[H][0] + offset, bb[V][0] + offset,
+ bb[H][1] - offset, bb[V][1] - offset);
+ cairo_restore (xr->cairo);
+ }
+ }
+
+ for (i = 0; i < cell->n_contents && bb[V][0] < bb[V][1]; i++)
+ {
+ const struct cell_contents *contents = &cell->contents[i];
+
+ if (brk)
+ *brk = bb[V][0];
+ if (i > 0)
+ {
+ bb[V][0] += xr->char_height / 2;
+ if (bb[V][0] >= bb[V][1])
+ break;
+ if (brk)
+ *brk = bb[V][0];
+ }
+
+ if (contents->text)
+ bb[V][0] = xr_layout_cell_text (xr, contents, bb, clip,
+ bb[V][0], width, brk);
+ else
+ bb[V][0] = xr_layout_cell_subtable (xr, contents, bb, clip, width, brk);
+ }
+ *height = bb[V][0] - bb_[V][0];
}
\f
struct output_driver_factory pdf_driver_factory =
struct output_item *item;
/* Table items. */
- struct render_page *page;
+ 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->page = 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))
{
return r;
}
+void
+xr_rendering_destroy (struct xr_rendering *r)
+{
+ if (r)
+ {
+ output_item_unref (r->item);
+ render_pager_destroy (r->p);
+ free (r);
+ }
+}
+
void
xr_rendering_measure (struct xr_rendering *r, int *w, int *h)
{
if (is_table_item (r->item))
{
- int w0 = render_page_get_size (r->page, H);
- int w1 = r->title_width;
- *w = MAX (w0, w1) / XR_POINT;
- *h = (render_page_get_size (r->page, 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;
- render_page_draw_region (r->page,
- x * XR_POINT, (y * XR_POINT) - r->title_height,
- w * XR_POINT, h * XR_POINT);
+ xr->y = 0;
+ render_pager_draw_region (r->p,
+ x * XR_POINT, y * XR_POINT,
+ w * XR_POINT, h * XR_POINT);
}
else
xr_draw_chart (to_chart_item (r->item), cr,
{
struct xr_render_fsm fsm;
struct table_item *table_item;
- struct render_break x_break;
- struct render_break y_break;
- int caption_height;
+ struct render_pager *p;
};
static bool
{
struct xr_table_state *ts = UP_CAST (fsm, struct xr_table_state, fsm);
- for (;;)
+ while (render_pager_has_next (ts->p))
{
- struct render_page *y_slice;
- int space;
-
- while (!render_break_has_next (&ts->y_break))
- {
- struct render_page *x_slice;
-
- render_break_destroy (&ts->y_break);
- if (!render_break_has_next (&ts->x_break))
- return false;
-
- x_slice = render_break_next (&ts->x_break, xr->width);
- render_break_init (&ts->y_break, x_slice, V);
- }
+ int used;
- space = xr->length - xr->y;
- if (render_break_next_size (&ts->y_break) > space)
+ used = render_pager_draw_next (ts->p, xr->length - xr->y);
+ if (!used)
{
assert (xr->y > 0);
return true;
}
-
- y_slice = render_break_next (&ts->y_break, space);
- if (ts->caption_height)
- {
- if (xr->cairo)
- xr_draw_title (xr, table_item_get_caption (ts->table_item),
- xr->width, ts->caption_height);
-
- xr->y += ts->caption_height;
- ts->caption_height = 0;
- }
-
- if (xr->cairo)
- render_page_draw (y_slice);
- xr->y += render_page_get_size (y_slice, V);
- render_page_unref (y_slice);
+ else
+ xr->y += used;
}
+ return false;
}
static void
struct xr_table_state *ts = UP_CAST (fsm, struct xr_table_state, fsm);
table_item_unref (ts->table_item);
- render_break_destroy (&ts->x_break);
- render_break_destroy (&ts->y_break);
+ render_pager_destroy (ts->p);
free (ts);
}
xr_render_table (struct xr_driver *xr, const struct table_item *table_item)
{
struct xr_table_state *ts;
- struct render_page *page;
- int caption_width;
ts = xmalloc (sizeof *ts);
ts->fsm.render = xr_table_render;
if (xr->y > 0)
xr->y += xr->char_height;
- page = xr_render_table_item (xr, table_item,
- &caption_width, &ts->caption_height);
- xr->params->size[V] = xr->length - ts->caption_height;
-
- render_break_init (&ts->x_break, page, H);
- render_break_init_empty (&ts->y_break);
+ ts->p = render_pager_create (xr->params, table_item);
return &ts->fsm;
}
projects / pspp / blobdiff