diff options
Diffstat (limited to 'grc/gui/DrawingArea.py')
| -rw-r--r-- | grc/gui/DrawingArea.py | 202 |
1 files changed, 101 insertions, 101 deletions
diff --git a/grc/gui/DrawingArea.py b/grc/gui/DrawingArea.py index da16eb7cf2..64be4d3ea6 100644 --- a/grc/gui/DrawingArea.py +++ b/grc/gui/DrawingArea.py @@ -23,113 +23,113 @@ import gtk from Constants import MIN_WINDOW_WIDTH, MIN_WINDOW_HEIGHT, DND_TARGETS class DrawingArea(gtk.DrawingArea): - """ - DrawingArea is the gtk pixel map that graphical elements may draw themselves on. - The drawing area also responds to mouse and key events. - """ + """ + DrawingArea is the gtk pixel map that graphical elements may draw themselves on. + The drawing area also responds to mouse and key events. + """ - def __init__(self, flow_graph): - """ - DrawingArea contructor. - Connect event handlers. - - Args: - main_window: the main_window containing all flow graphs - """ - self.ctrl_mask = False - self._flow_graph = flow_graph - gtk.DrawingArea.__init__(self) - self.set_size_request(MIN_WINDOW_WIDTH, MIN_WINDOW_HEIGHT) - self.connect('realize', self._handle_window_realize) - self.connect('configure-event', self._handle_window_configure) - self.connect('expose-event', self._handle_window_expose) - self.connect('motion-notify-event', self._handle_mouse_motion) - self.connect('button-press-event', self._handle_mouse_button_press) - self.connect('button-release-event', self._handle_mouse_button_release) - self.add_events( - gtk.gdk.BUTTON_PRESS_MASK | \ - gtk.gdk.POINTER_MOTION_MASK | \ - gtk.gdk.BUTTON_RELEASE_MASK | \ - gtk.gdk.LEAVE_NOTIFY_MASK | \ - gtk.gdk.ENTER_NOTIFY_MASK - ) - #setup drag and drop - self.drag_dest_set(gtk.DEST_DEFAULT_ALL, DND_TARGETS, gtk.gdk.ACTION_COPY) - self.connect('drag-data-received', self._handle_drag_data_received) - #setup the focus flag - self._focus_flag = False - self.get_focus_flag = lambda: self._focus_flag - def _handle_focus_event(widget, event, focus_flag): self._focus_flag = focus_flag - self.connect('leave-notify-event', _handle_focus_event, False) - self.connect('enter-notify-event', _handle_focus_event, True) + def __init__(self, flow_graph): + """ + DrawingArea contructor. + Connect event handlers. + + Args: + main_window: the main_window containing all flow graphs + """ + self.ctrl_mask = False + self._flow_graph = flow_graph + gtk.DrawingArea.__init__(self) + self.set_size_request(MIN_WINDOW_WIDTH, MIN_WINDOW_HEIGHT) + self.connect('realize', self._handle_window_realize) + self.connect('configure-event', self._handle_window_configure) + self.connect('expose-event', self._handle_window_expose) + self.connect('motion-notify-event', self._handle_mouse_motion) + self.connect('button-press-event', self._handle_mouse_button_press) + self.connect('button-release-event', self._handle_mouse_button_release) + self.add_events( + gtk.gdk.BUTTON_PRESS_MASK | \ + gtk.gdk.POINTER_MOTION_MASK | \ + gtk.gdk.BUTTON_RELEASE_MASK | \ + gtk.gdk.LEAVE_NOTIFY_MASK | \ + gtk.gdk.ENTER_NOTIFY_MASK + ) + #setup drag and drop + self.drag_dest_set(gtk.DEST_DEFAULT_ALL, DND_TARGETS, gtk.gdk.ACTION_COPY) + self.connect('drag-data-received', self._handle_drag_data_received) + #setup the focus flag + self._focus_flag = False + self.get_focus_flag = lambda: self._focus_flag + def _handle_focus_event(widget, event, focus_flag): self._focus_flag = focus_flag + self.connect('leave-notify-event', _handle_focus_event, False) + self.connect('enter-notify-event', _handle_focus_event, True) - def new_pixmap(self, width, height): return gtk.gdk.Pixmap(self.window, width, height, -1) - def get_pixbuf(self): - width, height = self._pixmap.get_size() - pixbuf = gtk.gdk.Pixbuf(gtk.gdk.COLORSPACE_RGB, 0, 8, width, height) - pixbuf.get_from_drawable(self._pixmap, self._pixmap.get_colormap(), 0, 0, 0, 0, width, height) - return pixbuf + def new_pixmap(self, width, height): return gtk.gdk.Pixmap(self.window, width, height, -1) + def get_pixbuf(self): + width, height = self._pixmap.get_size() + pixbuf = gtk.gdk.Pixbuf(gtk.gdk.COLORSPACE_RGB, 0, 8, width, height) + pixbuf.get_from_drawable(self._pixmap, self._pixmap.get_colormap(), 0, 0, 0, 0, width, height) + return pixbuf - ########################################################################## - ## Handlers - ########################################################################## - def _handle_drag_data_received(self, widget, drag_context, x, y, selection_data, info, time): - """ - Handle a drag and drop by adding a block at the given coordinate. - """ - self._flow_graph.add_new_block(selection_data.data, (x, y)) + ########################################################################## + ## Handlers + ########################################################################## + def _handle_drag_data_received(self, widget, drag_context, x, y, selection_data, info, time): + """ + Handle a drag and drop by adding a block at the given coordinate. + """ + self._flow_graph.add_new_block(selection_data.data, (x, y)) - def _handle_mouse_button_press(self, widget, event): - """ - Forward button click information to the flow graph. - """ - self.ctrl_mask = event.state & gtk.gdk.CONTROL_MASK - if event.button == 1: self._flow_graph.handle_mouse_selector_press( - double_click=(event.type == gtk.gdk._2BUTTON_PRESS), - coordinate=(event.x, event.y), - ) - if event.button == 3: self._flow_graph.handle_mouse_context_press( - coordinate=(event.x, event.y), - event=event, - ) + def _handle_mouse_button_press(self, widget, event): + """ + Forward button click information to the flow graph. + """ + self.ctrl_mask = event.state & gtk.gdk.CONTROL_MASK + if event.button == 1: self._flow_graph.handle_mouse_selector_press( + double_click=(event.type == gtk.gdk._2BUTTON_PRESS), + coordinate=(event.x, event.y), + ) + if event.button == 3: self._flow_graph.handle_mouse_context_press( + coordinate=(event.x, event.y), + event=event, + ) - def _handle_mouse_button_release(self, widget, event): - """ - Forward button release information to the flow graph. - """ - self.ctrl_mask = event.state & gtk.gdk.CONTROL_MASK - if event.button == 1: self._flow_graph.handle_mouse_selector_release( - coordinate=(event.x, event.y), - ) + def _handle_mouse_button_release(self, widget, event): + """ + Forward button release information to the flow graph. + """ + self.ctrl_mask = event.state & gtk.gdk.CONTROL_MASK + if event.button == 1: self._flow_graph.handle_mouse_selector_release( + coordinate=(event.x, event.y), + ) - def _handle_mouse_motion(self, widget, event): - """ - Forward mouse motion information to the flow graph. - """ - self.ctrl_mask = event.state & gtk.gdk.CONTROL_MASK - self._flow_graph.handle_mouse_motion( - coordinate=(event.x, event.y), - ) + def _handle_mouse_motion(self, widget, event): + """ + Forward mouse motion information to the flow graph. + """ + self.ctrl_mask = event.state & gtk.gdk.CONTROL_MASK + self._flow_graph.handle_mouse_motion( + coordinate=(event.x, event.y), + ) - def _handle_window_realize(self, widget): - """ - Called when the window is realized. - Update the flowgraph, which calls new pixmap. - """ - self._flow_graph.update() + def _handle_window_realize(self, widget): + """ + Called when the window is realized. + Update the flowgraph, which calls new pixmap. + """ + self._flow_graph.update() - def _handle_window_configure(self, widget, event): - """ - Called when the window is resized. - Create a new pixmap for background buffer. - """ - self._pixmap = self.new_pixmap(*self.get_size_request()) + def _handle_window_configure(self, widget, event): + """ + Called when the window is resized. + Create a new pixmap for background buffer. + """ + self._pixmap = self.new_pixmap(*self.get_size_request()) - def _handle_window_expose(self, widget, event): - """ - Called when window is exposed, or queue_draw is called. - Double buffering: draw to pixmap, then draw pixmap to window. - """ - gc = self.window.new_gc() - self._flow_graph.draw(gc, self._pixmap) - self.window.draw_drawable(gc, self._pixmap, 0, 0, 0, 0, -1, -1) + def _handle_window_expose(self, widget, event): + """ + Called when window is exposed, or queue_draw is called. + Double buffering: draw to pixmap, then draw pixmap to window. + """ + gc = self.window.new_gc() + self._flow_graph.draw(gc, self._pixmap) + self.window.draw_drawable(gc, self._pixmap, 0, 0, 0, 0, -1, -1) |