63 lines
1.9 KiB
Python
63 lines
1.9 KiB
Python
import gtk
|
|
import goocanvas
|
|
import cairo
|
|
|
|
from sugar.canvas.IconItem import IconItem
|
|
|
|
class Grid:
|
|
COLS = 80.0
|
|
ROWS = 60.0
|
|
|
|
def convert_from_screen(self, x, y):
|
|
factor = Grid.COLS / gtk.gdk.screen_width()
|
|
|
|
grid_x = round(x * factor) - 1
|
|
grid_y = round(y * factor) - 1
|
|
|
|
return [grid_x, grid_y]
|
|
|
|
def set_constraints(self, component, x, y, width=-1, height=-1):
|
|
if isinstance(component, gtk.Window):
|
|
self._layout_window(component, x, y, width, height)
|
|
elif isinstance(component, goocanvas.Item):
|
|
self._layout_item(component, x, y, width, height)
|
|
elif isinstance(component, goocanvas.CanvasView):
|
|
self._layout_canvas(component, x, y, width, height)
|
|
|
|
def _layout_window(self, window, x, y, width, height):
|
|
scale = gtk.gdk.screen_width() / Grid.COLS
|
|
|
|
window.move(int(x * scale), int(y * scale))
|
|
window.resize(int(width * scale), int(height * scale))
|
|
|
|
def _layout_item(self, item, x, y, width, height):
|
|
scale = 1200 / Grid.COLS
|
|
|
|
self._allocate_item_position(item, x * scale, y * scale)
|
|
if width > 0 and height > 0:
|
|
self._allocate_item_size(item, width * scale, height * scale)
|
|
|
|
# FIXME We really need layout support in goocanvas
|
|
def _allocate_item_size(self, item, width, height):
|
|
if isinstance(item, goocanvas.Rect):
|
|
item.props.width = width - item.props.line_width * 2
|
|
item.props.height = height - item.props.line_width * 2
|
|
elif isinstance(item, goocanvas.Text):
|
|
item.props.width = width
|
|
elif isinstance(item, IconItem):
|
|
item.props.size = width
|
|
|
|
def _allocate_item_position(self, item, x, y):
|
|
if isinstance(item, goocanvas.Rect):
|
|
x = x + item.props.line_width
|
|
y = y + item.props.line_width
|
|
|
|
matrix = cairo.Matrix(1, 0, 0, 1, 0, 0)
|
|
matrix.translate(x, y)
|
|
item.set_transform(matrix)
|
|
|
|
def _layout_canvas(self, canvas, x, y, width, height):
|
|
scale = 1200 / Grid.COLS
|
|
|
|
canvas.set_bounds(x * scale, y * scale, width * scale, height * scale)
|