def _draw_labels(ctx, map_grid,
map_area_width_dots, map_area_height_dots,
grid_legend_margin_dots):
"""
Draw the Grid labels at current position.
Args:
ctx (cairo.Context): The cairo context to use to draw.
map_grid (Grid): the grid objects whose labels we want to draw.
map_area_width_dots/map_area_height_dots (numbers): size of the
map (cairo units).
grid_legend_margin_dots (number): margin between border of
map and grid labels (cairo units).
"""
ctx.save()
step_horiz = map_area_width_dots / map_grid.horiz_count
last_horiz_portion = math.modf(map_grid.horiz_count)[0]
step_vert = map_area_height_dots / map_grid.vert_count
last_vert_portion = math.modf(map_grid.vert_count)[0]
ctx.set_font_size(min(0.75 * grid_legend_margin_dots,
0.5 * step_horiz))
for i, label in enumerate(map_grid.horizontal_labels):
x = i * step_horiz
if i < len(map_grid.horizontal_labels) - 1:
x += step_horiz/2.0
elif last_horiz_portion >= 0.3:
x += step_horiz * last_horiz_portion/2.0
else:
continue
draw_utils.draw_simpletext_center(ctx, label,
x, grid_legend_margin_dots/2.0)
draw_utils.draw_simpletext_center(ctx, label,
x, map_area_height_dots -
grid_legend_margin_dots/2.0)
for i, label in enumerate(map_grid.vertical_labels):
y = i * step_vert
if i < len(map_grid.vertical_labels) - 1:
y += step_vert/2.0
elif last_vert_portion >= 0.3:
y += step_vert * last_vert_portion/2.0
else:
continue
draw_utils.draw_simpletext_center(ctx, label,
grid_legend_margin_dots/2.0, y)
draw_utils.draw_simpletext_center(ctx, label,
map_area_width_dots -
grid_legend_margin_dots/2.0, y)
ctx.restore()
def _render_blank_page(self, ctx, cairo_surface, dpi):
"""
Render a blank page with a nice "intentionally blank" notice
"""
ctx.save()
ctx.translate(
commons.convert_pt_to_dots(Renderer.PRINT_SAFE_MARGIN_PT),
commons.convert_pt_to_dots(Renderer.PRINT_SAFE_MARGIN_PT))
# footer notice
w = self._usable_area_width_pt
h = self._usable_area_height_pt
ctx.set_source_rgb(.6,.6,.6)
draw_utils.draw_simpletext_center(ctx, _('This page is intentionally left '\
'blank.'), w/2.0, 0.95*h)
draw_utils.render_page_number(ctx, 2,
self._usable_area_width_pt,
self._usable_area_height_pt,
self.grayed_margin_pt,
transparent_background=False)
cairo_surface.show_page()
ctx.restore()