diff options
Diffstat (limited to 'shell/view/home/IconLayout.py')
-rw-r--r-- | shell/view/home/IconLayout.py | 91 |
1 files changed, 0 insertions, 91 deletions
diff --git a/shell/view/home/IconLayout.py b/shell/view/home/IconLayout.py deleted file mode 100644 index f5f0267..0000000 --- a/shell/view/home/IconLayout.py +++ /dev/null @@ -1,91 +0,0 @@ -import random -import math - -import cairo - -class IconLayout: - DISTANCE_THRESHOLD = 120.0 - - def __init__(self, grid): - self._icons = [] - self._constraints = {} - self._grid = grid - - [self._x1, self._y1] = self._grid.convert_to_canvas(1, 1) - [self._x2, self._y2] = self._grid.convert_to_canvas(78, 59) - - def add_icon(self, icon): - self._icons.append(icon) - self._layout_icon(icon) - self.update() - - def remove_icon(self, icon): - self._icons.remove(icon) - del self._constraints[icon] - self.update() - - def _get_distance(self, icon1, icon2): - [icon1_x, icon1_y] = self._constraints[icon1] - [icon2_x, icon2_y] = self._constraints[icon2] - - a = icon1_x - icon2_x - b = icon1_y - icon2_y - - return math.sqrt(a * a + b * b) - - def _get_repulsion(self, icon1, icon2): - [icon1_x, icon1_y] = self._constraints[icon1] - [icon2_x, icon2_y] = self._constraints[icon2] - - f_x = icon1_x - icon2_x - f_y = icon1_y - icon2_y - - return [f_x, f_y] - - def _spread_icons(self): - self._stable = True - - for icon1 in self._icons: - vx = 0 - vy = 0 - - [x, y] = self._constraints[icon1] - - for icon2 in self._icons: - if icon1 != icon2: - distance = self._get_distance(icon1, icon2) - if distance <= IconLayout.DISTANCE_THRESHOLD: - self._stable = False - [f_x, f_y] = self._get_repulsion(icon1, icon2) - vx += f_x - vy += f_y - - new_x = x + vx - new_y = y + vy - - new_x = max(self._x1, new_x) - new_y = max(self._y1, new_y) - - [width, height] = icon1.get_size_request() - new_x = min(self._x2 - width, new_x) - new_y = min(self._y2 - height, new_y) - - self._constraints[icon1] = [new_x, new_y] - - matrix = cairo.Matrix(1, 0, 0, 1, 0, 0) - matrix.translate(new_x - (width / 2), new_y - (height / 2)) - icon1.set_transform(matrix) - - def update(self): - tries = 10 - self._spread_icons() - while not self._stable and tries > 0: - self._spread_icons() - tries -= 1 - - def _layout_icon(self, icon): - [width, height] = icon.get_size_request() - x = random.random() * (self._x2 - self._x1 - width) - y = random.random() * (self._y2 - self._y1 - height) - - self._constraints[icon] = [x, y] |