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Fix table layout issue: row spans crossing row groups.

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Track row group that spans belong to, and compare with current
  cell's row group to decide whether the previous span affects
  current cell's start column.
This commit is contained in:
Michael Drake 2014-04-12 16:09:17 +01:00
parent f89516c495
commit 679c87e527
1 changed files with 11 additions and 4 deletions
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15
render/box_normalise.c
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@ -42,6 +42,8 @@
struct span_info {
/** Number of rows this cell spans */
unsigned int row_span;
/** Row group of cell */
struct box *rg;
/** The cell in this column spans all rows until the end of the table */
bool auto_row;
};
@ -72,7 +74,7 @@ static bool box_normalise_table_row(struct box *row,
html_content *c);
static bool calculate_table_row(struct columns *col_info,
unsigned int col_span, unsigned int row_span,
unsigned int *start_column);
unsigned int *start_column, struct box *cell);
static bool box_normalise_inline_container(struct box *cont, html_content *c);
/**
@ -817,7 +819,7 @@ bool box_normalise_table_row(struct box *row,
}
if (calculate_table_row(col_info, cell->columns, cell->rows,
&cell->start_column) == false)
&cell->start_column, cell) == false)
return false;
}
@ -854,23 +856,27 @@ bool box_normalise_table_row(struct box *row,
* \param col_span Number of columns that current cell spans
* \param row_span Number of rows that current cell spans
* \param start_column Pointer to location to receive column index
* \param cell Box for current table cell
* \return true on success, false on memory exhaustion
*/
bool calculate_table_row(struct columns *col_info,
unsigned int col_span, unsigned int row_span,
unsigned int *start_column)
unsigned int *start_column, struct box *cell)
{
unsigned int cell_start_col = col_info->current_column;
unsigned int cell_end_col;
unsigned int i;
struct span_info *spans;
struct box *rg = cell->parent->parent; /* Cell's row group */
/* Skip columns with cells spanning from above */
/* TODO: Need to ignore cells spanning from above that belong to
* different row group. We don't have that info here. */
while (col_info->spans[cell_start_col].row_span != 0)
while (col_info->spans[cell_start_col].row_span != 0 &&
col_info->spans[cell_start_col].rg == rg) {
cell_start_col++;
}
/* Update current column with calculated start */
col_info->current_column = cell_start_col;
@ -905,6 +911,7 @@ bool calculate_table_row(struct columns *col_info,
for (i = cell_start_col; i < cell_end_col; i++) {
col_info->spans[i].row_span = (row_span == 0) ? 1 : row_span;
col_info->spans[i].auto_row = (row_span == 0);
col_info->spans[i].rg = rg;
}
/* Update current column with calculated end. */