def __begin(self, view, drag_ctx):
model, paths = view.get_selection().get_selected_rows()
surface = self.create_multi_row_drag_icon(paths, max_rows=3)
if surface is not None:
Gtk.drag_set_icon_surface(drag_ctx, surface)
def _drag_begin_cb(self, view, context):
self.drag_began()
src_path = self._docmodel.layer_stack.get_current_path()
self._drag_src_path = src_path
self._drag_dest_path = None
src_treepath = Gtk.TreePath(src_path)
src_icon_surf = self.create_row_drag_icon(src_treepath)
Gtk.drag_set_icon_surface(context, src_icon_surf)
self._hover_expand_timer_id = None
def _drag_begin_cb(self, view, context):
self.drag_began()
src_path = self._docmodel.layer_stack.get_current_path()
self._drag_src_path = src_path
self._drag_dest_path = None
src_treepath = Gtk.TreePath(src_path)
src_icon_surf = self.create_row_drag_icon(src_treepath)
Gtk.drag_set_icon_surface(context, src_icon_surf)
self._hover_expand_timer_id = None
def on_drag_begin(self, widget, drag_context):
row = widget.get_ancestor(TaskView)
listbox = row.get_parent()
listbox.select_row(row)
surface = cairo.ImageSurface(
cairo.Format.ARGB32, row.get_allocated_width(), row.get_allocated_height())
context = cairo.Context(surface)
row.draw(context)
Gtk.drag_set_icon_surface(drag_context, surface)
def _drag_begin_cb(self, eventbox, context):
"""Draws the drag icon."""
row = eventbox.get_parent()
alloc = row.get_allocation()
surface = cairo.ImageSurface(cairo.FORMAT_ARGB32, alloc.width,
alloc.height)
ctx = cairo.Context(surface)
row.draw(ctx)
ctx.paint_with_alpha(0.35)
Gtk.drag_set_icon_surface(context, surface)
def drag_begin(self, widget, context):
surface = self.get_drag_surface()
if surface :
surface.set_device_offset(0, 0)
self.surface = surface
Gtk.drag_set_icon_surface(context, surface)
else:
Gtk.drag_set_icon_default(context)
self.stop_drag_check()
# TODO : implement selection cache ?
selection_cache = self.drag_create_selection_cache()
def _drag_begin_cb(self, eventbox, context):
# Draw drag-icon
icon = self._drag_icon
icon_height = icon.get_height()
icon_width = icon.get_width()
surface = cairo.ImageSurface(cairo.FORMAT_ARGB32, icon_width, icon_height)
ctx = cairo.Context(surface)
# Center the icon around the cursor.
ctx.translate(icon_width / 2, icon_height / 2)
surface.set_device_offset(-icon_width / 2, -icon_height / 2)
Gdk.cairo_set_source_pixbuf(ctx, icon, 0, 0)
ctx.paint_with_alpha(0.35)
Gtk.drag_set_icon_surface(context, surface)
def drag_begin(self, widget, drag_context, data):
self.dnd_data_received = False
# get x,y co-ords of source square
x, y = data
if gv.verbose:
print u"in drag begin"
print u"data=", data
print u"widget_name=", widget.get_name()
print u"source sq=", x, y
stm = gv.jcchess.get_side_to_move()
# convert the x, y co-ords into the shogi representation
# (e.g. 8, 6 is 1g)
sq = gv.board.get_square_posn(x, y)
self.src = sq
if gv.verbose:
print u"source square: (x, y) = (", x, u",", y, u") ", sq
self.src_x = x
self.src_y = y
# set the icon for the drag and drop to the piece that is being
# dragged
self.piece = gv.board.get_piece(x, y)
# get width/height of board square
a = gv.gui.get_event_box(x, y).get_allocation()
surface = cairo.ImageSurface(cairo.FORMAT_ARGB32, a.width, a.height)
svghandle = gv.board.get_piece_handle(x, y)
dim = svghandle.get_dimensions()
cr = cairo.Context(surface)
sfw = (a.width * 1.0 / dim.width) * SCALE
sfh = (a.height * 1.0 / dim.height) * SCALE
cr.scale(sfw, sfh)
svghandle.render_cairo(cr)
# set mouse pointer to be in middle of drag icon
surface.set_device_offset(-a.width / 2, -a.height / 2)
Gtk.drag_set_icon_surface(drag_context, surface)
# clear the square where the piece is being moved from
gv.board.set_square_as_unoccupied(x, y)
def on_drag_begin(self, widget, drag_context):
""" User starts a drag """
row = widget.get_ancestor(Gtk.ListBoxRow)
alloc = row.get_allocation()
surface = cairo.ImageSurface(cairo.FORMAT_ARGB32, alloc.width,
alloc.height)
ctx = cairo.Context(surface)
row.get_style_context().add_class("drag-icon")
row.draw(ctx)
row.get_style_context().remove_class("drag-icon")
(x, y) = widget.translate_coordinates(row, 0, 0)
surface.set_device_offset(-x, -y)
Gtk.drag_set_icon_surface(drag_context, surface)
hand_cursor = Gdk.Cursor(Gdk.CursorType.HAND1)
self.get_window().set_cursor(hand_cursor)
def drag_begin(self, widget, context, preview_widget):
# hide ctrl strip when dragging, so that more items can be present at once
self.hb_editmode.set_sensitive(False)
for x in self.codes:
self.codes.get(x).ui.revealer.set_reveal_child(False)
# add a temporary background-color & border to the preview box
preview_widget.get_style_context().add_class("preview_box")
# create a cairo representation of the row when dragging
preview_alloc = preview_widget.get_allocation()
cairo_surface = cairo.ImageSurface(cairo.Format.ARGB32,
preview_alloc.width,
preview_alloc.height)
cairo_context = cairo.Context(cairo_surface)
preview_widget.draw(cairo_context)
Gtk.drag_set_icon_surface(context, cairo_surface)
# remove temporary style class
preview_widget.get_style_context().remove_class("preview_box")
del preview_alloc
del cairo_surface
del cairo_context
def do_drag_begin(self, context):
drag_records, context.drag_refs = self.get_selection_rows()
context.data = repr(drag_records).encode()
if not drag_records:
return
icons = [
self.create_row_drag_icon(ref.get_path())
for ref in context.drag_refs
]
xscale, yscale = icons[0].get_device_scale()
width, height = icons[0].get_width(), icons[0].get_height() - yscale
target = cairo.ImageSurface(
cairo.FORMAT_ARGB32, int(width / xscale),
int(height * len(context.drag_refs) / yscale) + 1)
cr = cairo.Context(target)
cr.set_source_rgba(0, 0, 0, 1)
cr.paint()
y = 2
for icon in icons:
cr.set_source_surface(icon, 2 / xscale, y / yscale)
cr.paint()
y += height
icon.flush()
Gtk.drag_set_icon_surface(context, target)
def __begin(self, view, drag_ctx):
model, paths = view.get_selection().get_selected_rows()
surface = self.create_multi_row_drag_icon(paths, max_rows=3)
if surface is not None:
Gtk.drag_set_icon_surface(drag_ctx, surface)
def _on_drag_begin(self, widget, drag_context):
"""Handler for ``drag-begin`` signal
When drag action begins this function does several things:
1. find the row for @widget,
2. estimate the number of rows being moved
3. unselect it (if selected)
4. add a frame style for opaque background and borders
5. create a cairo surface for row (if single), a text surface otherwise
6. set it as icon for the drag context
7. remove the frame style
8. set the row as selected
"""
row = widget.get_ancestor(Gtk.ListBoxRow.__gtype__)
num_selected = len(self.get_selected_rows())
if (not row.is_selected() and self.in_multi_selection_mode()):
num_selected += 1
self.unselect_row(row)
style_context = row.get_style_context()
style_context.add_class('draft-drag-icon')
allocation = row.get_allocation()
surface = cairo.ImageSurface(cairo.FORMAT_ARGB32, allocation.width,
allocation.height)
context = cairo.Context(surface)
if num_selected > 1:
style_ctx = self.get_style_context()
font = style_ctx.get_font(style_ctx.get_state())
border_success, border_color = style_ctx.lookup_color('borders')
bg_success, bg_color = style_ctx.lookup_color('content_view_bg')
fg_success, fg_color = style_ctx.lookup_color('theme_fg_color')
if border_success and bg_success and fg_success:
offset = 10
font_size = int((font.get_size() / Pango.SCALE) * 96 / 72)
context.set_font_size(font_size)
font_family = font.get_family()
context.select_font_face(font_family, cairo.FontSlant.NORMAL,
cairo.FontWeight.BOLD)
text = _(" items selected")
text = str(num_selected) + text
extents = context.text_extents(text)
context.set_source_rgba(border_color.red, border_color.green,
border_color.blue)
context.rectangle(0, 0, extents.width + (offset * 2),
extents.height + (offset * 2))
context.fill()
context.set_source_rgb(bg_color.red, bg_color.green,
bg_color.blue)
context.rectangle(1, 1, (extents.width + (offset * 2)) - 2,
(extents.height + (offset * 2)) - 2)
context.fill()
context.set_source_rgba(fg_color.red, fg_color.green,
fg_color.blue)
context.move_to(offset, offset + extents.height)
context.show_text(text)
else:
row.draw(context)
Gtk.drag_set_icon_surface(drag_context, surface)
style_context.remove_class('draft-drag-icon')
self.select_row(row)
