def __init__(self, canvas, main_window, title="Photos",
elements=None, theme=None):
Screen.__init__(self, canvas, "images/thumbnail",
main_window, title, theme)
self._setup_gui()
self.elements = elements
self.throbber = self.part_swallow_get("throbber")
self.row_widths = []
self.over_speed = False
self.kinetic = KineticMouse(self._move_offset)
self.is_dragging = False
self.mouse_down_pos = None
self.callback_block_load = None
self.callback_resume_load = None
self.callback_transition_in_finished = None
self.callback_clicked = None
self.callback_move_offset = None
# the resize callback is triggered in ImageGridContainer's _setup_gui
self.callback_resized = None
self.callback_on_theme_changed = None
class ImageThumbScreen(Screen):
view_name = "images_thumb"
click_constant = 20
speed_threshold = 1000
def __init__(self, canvas, main_window, title="Photos",
elements=None, theme=None):
Screen.__init__(self, canvas, "images/thumbnail",
main_window, title, theme)
self._setup_gui()
self.elements = elements
self.throbber = self.part_swallow_get("throbber")
self.row_widths = []
self.over_speed = False
self.kinetic = KineticMouse(self._move_offset)
self.is_dragging = False
self.mouse_down_pos = None
self.callback_block_load = None
self.callback_resume_load = None
self.callback_transition_in_finished = None
self.callback_clicked = None
self.callback_move_offset = None
# the resize callback is triggered in ImageGridContainer's _setup_gui
self.callback_resized = None
self.callback_on_theme_changed = None
def ImageFrameThumb(self, theme=None):
return ImageFrameThumb(self.evas, self, theme)
def theme_changed(self):
Screen.theme_changed(self)
self.image_grid.theme_changed()
self._setup_click_area()
self.callback_on_theme_changed()
def loaded(self):
self._check_has_elements()
self.throbber_stop()
def _check_has_elements(self):
if self.elements:
self.signal_emit("message,hide", "")
else:
self.part_text_set("message", "No items found.")
self.signal_emit("message,show", "")
def throbber_start(self):
self.throbber.signal_emit("throbber,start", "")
def throbber_stop(self):
self.throbber.signal_emit("throbber,stop", "")
def _setup_gui(self):
self.image_grid = ImageGridContainer(self,
hpadding=20, vpadding=20)
self.part_swallow("contents", self.image_grid)
self._setup_click_area()
def _setup_click_area(self):
self.click_area = self.part_object_get("click_area")
self.click_area.on_mouse_down_add(self._cb_on_mouse_down)
self.click_area.on_mouse_up_add(self._cb_on_mouse_up)
self.click_area.on_mouse_move_add(self._cb_on_mouse_move)
def clear_all(self):
self.image_grid.clear_all()
def _check_speed(self, keep_moving):
if not keep_moving:
if self.over_speed:
log.debug("resume load callback")
if self.callback_resume_load:
self.callback_resume_load()
self.over_speed = False
return
if self.kinetic.animation:
speed = abs(self.kinetic.anim_speed)
log.debug("abs vel = %s", speed)
if not self.over_speed and (speed > self.speed_threshold):
log.debug("hold file sets")
if self.callback_block_load:
self.callback_block_load()
self.over_speed = True
def _move_offset(self, offset):
if not self.callback_move_offset:
return False
keep_moving = self.callback_move_offset(offset)
self._check_speed(keep_moving)
return keep_moving
def _emit_clicked(self, x, y):
obj = self.image_grid.object_at_xy(x, y)
if obj:
self.callback_clicked(obj)
def _is_click_possible(self, x):
if self.is_dragging or self.mouse_down_pos is None:
return False
else:
return abs(x - self.mouse_down_pos) <= self.click_constant
def _cb_on_mouse_up(self, obj, event):
if not event.button == 1:
return
x, y = event.position.canvas
if self._is_click_possible(x):
self._emit_clicked(x, y)
self.kinetic.mouse_cancel()
else:
self.kinetic.mouse_up(x)
def _cb_on_mouse_down(self, obj, event):
if not event.button == 1:
return
x, y = event.position.canvas
self.mouse_down_pos = x
self.is_dragging = not self.kinetic.mouse_down(x)
def _cb_on_mouse_move(self, obj, event):
if not event.buttons == 1:
return
x, y = event.position.canvas
if not self._is_click_possible(x):
self.is_dragging = True
self.kinetic.mouse_move(x)
@edje.decorators.signal_callback("transition,in,finished", "")
def cb_transition_in_finished(self, emission, source):
self.callback_transition_in_finished()
@evas.decorators.del_callback
def _cb_on_delete(self):
self.image_grid.delete()
