class ListItem(Item):
def __init__(self, scene, x, y, w, data, item_selected_cb=None, parent=None):
self.w = 100
self.h = 100
self.sp = 0
self.item_selected_cb = item_selected_cb
super(ListItem, self).__init__(scene, x, y, parent=parent)
self.w = self.m2pix(w)
self.h = self.m2pix(0.2)
self.sp = self.m2pix(0.005)
self.items = []
self.middle_item_idx = 0
self.selected_item_idx = None
for d in data:
self.items.append(ButtonItem(self.scene(), 0, 0,
d, self, self.item_clicked_cb, width=w, push_button=True))
# TODO down_btn is not properly aligned
self.up_btn = ButtonItem(self.scene(), 0, 0, "", self, self.up_btn_cb, width=w / 2 - 0.005 / 2,
image_path=icons_path + "arrow-up.svg")
self.down_btn = ButtonItem(self.scene(), 0, 0, "", self, self.down_btn_cb, width=w / 2 - 0.005 / 2,
image_path=icons_path + "arrow-down.svg")
self.up_btn.setPos(0, self.h - self.down_btn.boundingRect().height())
self.down_btn.setPos(self.up_btn.boundingRect().width() + self.sp,
self.h - self.down_btn.boundingRect().height())
self.set_current_idx(min(1, len(self.items) - 1))
self.update()
def item_clicked_cb(self, btn):
if not self.isEnabled():
return
if not btn.pressed:
self.selected_item_idx = None
else:
self.selected_item_idx = self.items.index(btn)
for i in range(0, len(self.items)):
if i != self.selected_item_idx:
self.items[i].set_pressed(False)
self.set_current_idx(self.selected_item_idx)
if self.item_selected_cb is not None:
self.item_selected_cb()
def get_current_idx(self):
return self.middle_item_idx
def set_current_idx(self, idx, select=False):
if select:
self.selected_item_idx = idx
self.middle_item_idx = max(idx, min(1, len(self.items) - 1))
for it in self.items:
it.setVisible(False)
if select:
it.set_pressed(False)
displayed = [self.middle_item_idx]
# selected item is always vertically centered
self.items[self.middle_item_idx].setPos(
0, (self.h - self.items[self.middle_item_idx].boundingRect().height()) / 2)
self.items[self.middle_item_idx].setVisible(True)
if select:
self.items[self.selected_item_idx].set_pressed(True)
# how much vert. space is used
vspace = self.items[self.middle_item_idx].boundingRect().height()
# fill space above middle item
for idx in range(self.middle_item_idx - 1, -1, -1):
h = self.items[idx].boundingRect().height()
y = self.items[idx + 1].y() - self.sp - h
if y < 0:
break
self.items[idx].setPos(0, y)
self.items[idx].setVisible(True)
displayed.append(idx)
vspace += self.sp + h
displayed.append(idx)
# fill space below middle item
for idx in range(self.middle_item_idx + 1, len(self.items)):
h = self.items[idx].boundingRect().height()
y = self.items[idx - 1].y() + self.items[idx -
1].boundingRect().height() + self.sp
if y + h > self.down_btn.y():
break
self.items[idx].setPos(0, y)
self.items[idx].setVisible(True)
vspace += self.sp + h
displayed.append(idx)
if self.isEnabled():
self.up_btn.set_enabled(min(displayed) > 0)
self.down_btn.set_enabled(max(displayed) < len(self.items) - 1)
def up_btn_cb(self, btn):
if self.middle_item_idx > 0:
self.set_current_idx(self.middle_item_idx - 1)
def down_btn_cb(self, btn):
if self.middle_item_idx < len(self.items) - 1:
self.set_current_idx(self.middle_item_idx + 1)
def boundingRect(self):
return QtCore.QRectF(0, 0, self.w, self.h)
def paint(self, painter, option, widget):
pass
class ListItem(Item):
def __init__(self, scene, x, y, w, data, item_selected_cb=None, parent=None):
self.w = 100
self.h = 100
self.sp = 0
self.item_selected_cb = item_selected_cb
super(ListItem, self).__init__(scene, x, y, parent)
self.w = self.m2pix(w)
self.h = self.m2pix(0.2)
self.sp = self.m2pix(0.005)
self.items = []
self.middle_item_idx = 0
self.selected_item_idx = None
for d in data:
self.items.append(ButtonItem(self.scene(), 0, 0,
d, self, self.item_clicked_cb, width=w, push_button=True))
rospack = rospkg.RosPack()
icons_path = rospack.get_path('art_projected_gui') + '/icons/'
self.up_btn = ButtonItem(self.scene(), 0, 0, translate(
"ProgramItem", "Up"), self, self.up_btn_cb, width=w, image_path=icons_path + "arrow-up.svg")
self.down_btn = ButtonItem(self.scene(), 0, 0, translate(
"ProgramItem", "Down"), self, self.down_btn_cb, width=w, image_path=icons_path + "arrow-down.svg")
self.up_btn.setPos(0, 0)
self.down_btn.setPos(0, self.h - self.down_btn.boundingRect().height())
self.set_current_idx(min(1, len(self.items) - 1))
self.update()
def item_clicked_cb(self, btn):
if not self.isEnabled():
return
if not btn.pressed:
self.selected_item_idx = None
else:
self.selected_item_idx = self.items.index(btn)
for i in range(0, len(self.items)):
if i != self.selected_item_idx:
self.items[i].set_pressed(False)
self.set_current_idx(self.selected_item_idx)
if self.item_selected_cb is not None:
self.item_selected_cb()
def get_current_idx(self):
return self.middle_item_idx
def set_current_idx(self, idx, select=False):
if select:
self.selected_item_idx = idx
self.middle_item_idx = max(idx, min(1, len(self.items) - 1))
if self.isEnabled():
if self.middle_item_idx == min(1, len(self.items) - 1):
self.up_btn.set_enabled(False)
else:
self.up_btn.set_enabled(True)
if (idx < len(self.items) - 2):
self.down_btn.set_enabled(True)
else:
self.down_btn.set_enabled(False)
for it in self.items:
it.setVisible(False)
if select:
it.set_pressed(False)
# selected item is always vertically centered
self.items[self.middle_item_idx].setPos(
0, (self.h - self.items[self.middle_item_idx].boundingRect().height()) / 2)
self.items[self.middle_item_idx].setVisible(True)
if select:
self.items[self.middle_item_idx].set_pressed(True)
# how much vert. space is used
vspace = self.items[self.middle_item_idx].boundingRect().height()
# fill space above selected item
for idx in range(self.middle_item_idx - 1, -1, -1):
h = self.items[idx].boundingRect().height()
y = self.items[idx + 1].y() - self.sp - h
if y < self.up_btn.y() + self.up_btn.boundingRect().height():
break
self.items[idx].setPos(0, y)
self.items[idx].setVisible(True)
vspace += self.sp + h
# fill space below selected item
for idx in range(self.middle_item_idx + 1, len(self.items)):
h = self.items[idx].boundingRect().height()
y = self.items[idx - 1].y() + self.items[idx -
1].boundingRect().height() + self.sp
if y + h > self.down_btn.y():
break
self.items[idx].setPos(0, y)
self.items[idx].setVisible(True)
vspace += self.sp + h
def up_btn_cb(self, btn):
if self.middle_item_idx > 0:
self.set_current_idx(self.middle_item_idx - 1)
def down_btn_cb(self, btn):
if self.middle_item_idx < len(self.items) - 1:
self.set_current_idx(self.middle_item_idx + 1)
def boundingRect(self):
return QtCore.QRectF(0, 0, self.w, self.h)
def paint(self, painter, option, widget):
pass
