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bug fix 2714: long note in indiv complete report means infinite loop in cairo

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The fix consists in allowing cells to be split, so by extension also 
 rows now split automatically in CairoDoc


svn: r11984
This commit is contained in:
Benny Malengier 2009-02-14 13:12:59 +00:00
parent 7b85d8e4af
commit 917658df34
1 changed files with 66 additions and 20 deletions
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86
src/plugins/docgen/CairoDoc.py
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@ -439,6 +439,9 @@ class GtkDocParagraph(GtkDocBaseElement):
layout.set_font_description(fontstyle_to_fontdescription(font_style))
# calculate the height of one line
# FIXME, we should do set_markup(self._text) and get height of entire
# block somehow, as with markup we allow for setting height
# of pieces of text ... only needed for styled notes though...
layout.set_text('Test')
layout_width, layout_height = layout.get_pixel_size()
line_height = layout_height + self.spacing
@ -446,8 +449,8 @@ class GtkDocParagraph(GtkDocBaseElement):
text_height = height - t_margin - 2 * v_padding
line_per_height = text_height / line_height
# if nothing fits return now with result if not a cell (undivisable)
if line_per_height < 1 and not self._parent._type == 'CELL':
# if nothing fits return now with result
if line_per_height < 1:
return (None, self), 0
# calculate where to cut the paragraph
@ -456,15 +459,17 @@ class GtkDocParagraph(GtkDocBaseElement):
line_count = layout.get_line_count()
# if all paragraph fits we don't need to cut
# if paragraph part of a cell, we do not divide, table must be split,
# as rows and cells do not divide ...
# ==> note: this means the user must not make one page paragraphs!
if line_count <= line_per_height or self._parent._type == 'CELL':
if line_count <= line_per_height:
paragraph_height = (layout_height + t_margin + (2 * v_padding))
if height - paragraph_height > b_margin:
paragraph_height += b_margin
return (self, None), paragraph_height
# if paragraph part of a cell, we do not divide if only small part,
# of paragraph can be shown, instead move to next page
if line_per_height < line_count < 4 and self._parent._type == 'CELL':
return (None, self), 0
# get index of first character which doesn't fit on available height
layout_line = layout.get_line(int(line_per_height))
index = layout_line.start_index
@ -477,9 +482,8 @@ class GtkDocParagraph(GtkDocBaseElement):
self._text = self._text.encode('utf-8')[:index]
self._style.set_bottom_margin(0)
# FIXME do we need to return the proper height???
# paragraph_height = line_height * line_count + t_margin + 2 * v_padding
paragraph_height = 0
paragraph_height = line_height * line_count + t_margin + 2 * v_padding
#paragraph_height = 0
return (self, new_paragraph), paragraph_height
def draw(self, cr, layout, width, dpi_x, dpi_y):
@ -578,7 +582,8 @@ class GtkDocTable(GtkDocBaseElement):
row = self._children[row_index]
(r1, r2), row_height = row.divide(layout, table_width, height,
dpi_x, dpi_y)
if table_height + row_height >= height:
if r2 is not None:
#break the table in two parts
break
table_height += row_height
row_index += 1
@ -587,9 +592,11 @@ class GtkDocTable(GtkDocBaseElement):
new_table = None
if row_index < len(self._children):
new_table = GtkDocTable(self._style)
for row in self._children[row_index:]:
#add the split row
new_table.add_child(r2)
for row in self._children[row_index+1:]:
new_table.add_child(row)
del self._children[row_index:]
del self._children[row_index+1:]
return (self, new_table), table_height
@ -624,7 +631,9 @@ class GtkDocTableRow(GtkDocBaseElement):
def divide(self, layout, width, height, dpi_x, dpi_y):
# the highest cell gives the height of the row
cell_heights = []
dividedrow = False
cell_width_iter = self._style.__iter__()
new_row = GtkDocTableRow(self._style)
for cell in self._children:
cell_width = 0
for i in range(cell.get_span()):
@ -633,13 +642,27 @@ class GtkDocTableRow(GtkDocBaseElement):
(c1, c2), cell_height = cell.divide(layout, cell_width, height,
dpi_x, dpi_y)
cell_heights.append(cell_height)
if c2 is None:
emptycell = GtkDocTableCell(c1._style, c1.get_span())
new_row.add_child(emptycell)
else:
dividedrow = True
new_row.add_child(c2)
# save height [inch] of the row to be able to draw exact cell border
row_height = max(cell_heights)
self.height = row_height / dpi_y
# a row can't be divided, return the height
return (self, None), row_height
# return the new row if dividing was needed
if dividedrow:
if row_height == 0:
for cell in self._children:
cell._style.set_top_border(False)
cell._style.set_left_border(False)
cell._style.set_right_border(False)
return (self, new_row), row_height
else:
return (self, None), row_height
def draw(self, cr, layout, width, dpi_x, dpi_y):
cr.save()
@ -685,19 +708,42 @@ class GtkDocTableCell(GtkDocBaseElement):
# calculate real available width
width -= 2 * h_padding
available_height = height
# calculate height of each child
cell_height = 0
for child in self._children:
(e1, e2), child_height = child.divide(layout, width, height,
dpi_x, dpi_y)
cell_height += child_height
new_cell = None
e2 = None
childnr = 0
for child in self._children:
if new_cell is None:
(e1, e2), child_height = child.divide(layout, width,
available_height, dpi_x, dpi_y)
cell_height += child_height
available_height -= child_height
if e2 is not None:
#divide the cell
new_style = BaseDoc.TableCellStyle(self._style)
if e1 is not None:
new_style.set_top_border(False)
new_cell = GtkDocTableCell(new_style, self._span)
new_cell.add_child(e2)
# then update this cell
self._style.set_bottom_border(False)
if e1 is not None:
childnr += 1
else:
#cell has been divided
new_cell.add_child(child)
self._children = self._children[:childnr]
# calculate real height
cell_height += 2 * v_padding
if cell_height <> 0:
cell_height += 2 * v_padding
# a cell can't be divided, return the heigth
return (self, None), cell_height
return (self, new_cell), cell_height
def draw(self, cr, layout, width, cell_height, dpi_x, dpi_y):
"""Draw a cell.