Add tool's width/height/length/radius information to the "ctrl" tooltip

issue #46, fixes #439

src/tools/classic_tools/tool_line.py

@@ -15,7 +15,7 @@
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
-import cairo
+import cairo, math
 from .abstract_classic_tool import AbstractClassicTool
 from .utilities_paths import utilities_add_arrow_triangle
 
@@ -41,6 +41,19 @@ def __init__(self, window, **kwargs):
 		self.add_tool_action_boolean('line-ortholock', self._ortholock)
 		self._set_options_attributes() # Not optimal but more readable
 
+	def get_tooltip(self, event_x, event_y, motion_behavior):
+		if motion_behavior != 1:
+			return None # no line is being drawn
+
+		delta_x = abs(self.x_press - event_x)
+		delta_y = abs(self.y_press - event_y)
+		line1 = _("Width: %spx") % str(delta_x)
+		line2 = _("Height: %spx") % str(delta_y)
+		length = round(math.sqrt(delta_x * delta_x + delta_y * delta_y), 2)
+		return line1 + "\n" + line2 + "\n" + _("Length: %spx") % str(length)
+
+	############################################################################
+
 	def _set_active_shape(self):
 		state_as_string = self.get_option_value('line_shape')
 		if state_as_string == 'thin':

src/tools/classic_tools/tool_shape.py

@@ -48,6 +48,25 @@ def _reset_temp_points(self):
 		self.initial_x = -1.0
 		self.initial_y = -1.0
 
+	def get_tooltip(self, event_x, event_y, motion_behavior):
+		if motion_behavior != 1:
+			return None # no line is being drawn
+		if self._shape_id in ['polygon', 'freeshpae']:
+			return None # no tooltip for these shapes
+
+		delta_x = abs(self.x_press - event_x)
+		delta_y = abs(self.y_press - event_y)
+
+		if self._shape_id == 'circle':
+			length = round(math.sqrt(delta_x * delta_x + delta_y * delta_y), 2)
+			return _("Radius: %spx") % length
+
+		line1 = _("Width: %spx") % str(delta_x)
+		line2 = _("Height: %spx") % str(delta_y)
+		return line1 + "\n" + line2
+
+	############################################################################
+
 	def _set_filling_style(self):
 		self._filling_id = self.get_option_value('shape_filling')
 

src/tools/selection_tools/select_rect.py

@@ -24,6 +24,18 @@ class ToolRectSelect(AbstractSelectionTool):
 	def __init__(self, window, **kwargs):
 		super().__init__('rect_select', _("Rectangle selection"), 'tool-select-rect-symbolic', window)
 
+	def get_tooltip(self, event_x, event_y, motion_behavior):
+		if motion_behavior != 1:
+			return None # no line is being drawn
+
+		delta_x = abs(self.x_press - event_x)
+		delta_y = abs(self.y_press - event_y)
+		line1 = _("Width: %spx") % str(delta_x)
+		line2 = _("Height: %spx") % str(delta_y)
+		return line1 + "\n" + line2
+
+	############################################################################
+
 	def press_define(self, event_x, event_y):
 		pass