import ast import time from gi.repository import GLib, Gtk, Gdk, GdkPixbuf import Activity import Export import threading import cv2 import numpy import getpass import os from PF2 import Histogram, Layer from PF2.Tools import BlackWhite from PF2.Tools import Colours from PF2.Tools import Contrast from PF2.Tools import Details from PF2.Tools import Tonemap from PF2.Tools import HueEqualiser from PF2.Tools import Blur class PF2(Activity.Activity): def on_init(self): self.id = "PF2" self.name = "Edit a Photo" self.subtitle = "Edit a Raster Image with PhotoFiddle" UI_FILE = "ui/PF2_Activity.glade" self.builder.add_from_file(UI_FILE) self.widget = self.builder.get_object("PF2_main") self.stack.add_titled(self.widget, self.id, self.name) self.header_widget = self.builder.get_object("PF2_header") self.header_stack.add_titled(self.header_widget, self.id, self.name) # Get all UI Components self.ui = {} components = [ "main", "control_reveal", "histogram_reveal", "layers_reveal", "upper_peak_toggle", "lower_peak_toggle", "histogram", "layer_stack", "preview", "preview_eventbox", "scroll_window", "open_button", "original_toggle", "tool_box_stack", "tool_stack", "open_window", "open_header", "open_cancel_button", "open_open_button", "open_chooser", "popovermenu", "show_hist", "export_image", "undo", "redo", "zoom_toggle", "zoom_reveal", "zoom", "reset", "mask_draw_toggle", "mask_erase_toggle", "mask_brush_size", "layers_list", "new_layer", "layer_mask_reveal", "add_layer_button", "remove_layer_button", "mask_brush_feather", "mask_brush_feather_scale", "edit_layer_mask_button", "layer_opacity", "layer_opacity_scale", "layer_blend_mode", "viewport" ] for component in components: self.ui[component] = self.builder.get_object("%s_%s" % (self.id, component)) self.menu_popover = self.ui["popovermenu"] # Set up tools self.tools = [ Contrast.Contrast, Tonemap.Tonemap, Details.Details, Colours.Colours, HueEqualiser.HueEqualiser, BlackWhite.BlackWhite, Blur.Blur ] # Setup layers self.layers = [] self.base_layer = self.create_layer("base", True) # Set the first tool to active # self.tools[0].tool_button.set_active(True) # self.ui["tools"].show_all() # Disable ui components by default self.ui["original_toggle"].set_sensitive(False) self.ui["export_image"].set_sensitive(False) # Setup editor variables self.is_editing = False self.has_loaded = False self.image_path = "" self.bit_depth = 8 self.image = None self.image_is_dirty = True self.original_image = None self.pwidth = 0 self.pheight = 0 self.awidth = 0 self.aheight = 0 self.pimage = None self.poriginal = None self.change_occurred = False self.additional_change_occurred = False self.running_stack = False self.upper_peak_on = False self.lower_peak_on = False self.is_exporting = False self.is_zooming = False self.undo_stack = [] self.undo_position = 0 self.undoing = False self.current_layer_path = None self.mousex = 0 self.mousey = 0 self.mousedown = False self.layer_order = [] self.pre_undo_layer_name = "base" # Setup Open Dialog self.ui["open_window"].set_transient_for(self.root) self.ui["open_window"].set_titlebar(self.ui["open_header"]) # Connect UI signals self.ui["open_button"].connect("clicked", self.on_open_clicked) self.ui["preview"].connect("draw", self.on_preview_draw) self.ui["original_toggle"].connect("toggled", self.on_preview_toggled) self.ui["upper_peak_toggle"].connect("toggled", self.on_upper_peak_toggled) self.ui["lower_peak_toggle"].connect("toggled", self.on_lower_peak_toggled) self.ui["show_hist"].connect("toggled", self.toggle_hist) self.ui["export_image"].connect("clicked", self.on_export_clicked) self.ui["open_open_button"].connect("clicked", self.on_file_opened) self.ui["open_cancel_button"].connect("clicked", self.on_file_canceled) self.ui["zoom_toggle"].connect("toggled", self.on_zoom_toggled) self.ui["zoom"].connect("value-changed", self.on_zoom_changed) self.ui["undo"].connect("clicked", self.on_undo) self.ui["redo"].connect("clicked", self.on_redo) self.ui["reset"].connect("clicked", self.on_reset) self.ui["preview_eventbox"].connect('motion-notify-event', self.preview_dragged) self.ui["preview_eventbox"].connect('button-press-event', self.new_path) self.ui["mask_draw_toggle"].connect("toggled", self.mask_draw_toggled) self.ui["mask_erase_toggle"].connect("toggled", self.mask_erase_toggled) self.ui["new_layer"].connect("clicked", self.new_layer_button_clicked) self.ui["layers_list"].connect("row-activated", self.layer_ui_activated) self.ui["add_layer_button"].connect("clicked", self.new_layer_button_clicked) self.ui["remove_layer_button"].connect("clicked", self.remove_layer_button_clicked) self.ui["edit_layer_mask_button"].connect("toggled", self.edit_mask_toggled) self.ui["layer_opacity"].connect("value-changed", self.update_layer_opacity) self.ui["scroll_window"].connect_after("draw", self.draw_ui_brush_circle) self.ui["scroll_window"].connect_after('motion-notify-event', self.mouse_coords_changed) self.ui["mask_brush_size"].connect("value-changed", self.brush_size_changed) self.ui["layer_blend_mode"].connect("changed", self.layer_blend_mode_changed) def on_open_clicked(self, sender): self.ui["open_window"].show_all() def on_file_opened(self, sender, path=None): self.has_loaded = False self.image = None self.undo_position = 0 self.undo_stack = [] self.update_undo_state() self.ui["open_window"].hide() self.ui["control_reveal"].set_reveal_child(True) self.ui["control_reveal"].set_sensitive(True) self.ui["original_toggle"].set_sensitive(True) self.ui["export_image"].set_sensitive(True) self.ui["reset"].set_sensitive(True) self.ui["new_layer"].set_sensitive(True) self.ui["layers_reveal"].set_reveal_child(False) self.is_editing = True if(path == None): self.image_path = self.ui["open_chooser"].get_filename() else: self.image_path = path w = (self.ui["scroll_window"].get_allocated_width() - 12) * self.ui["zoom"].get_value() h = (self.ui["scroll_window"].get_allocated_height() - 12) * self.ui["zoom"].get_value() self.show_message("Loading Photo…", "Please wait while PhotoFiddle loads your photo", True) self.root.get_titlebar().set_subtitle("%s…" % (self.image_path)) # Delete all layers, except the base for layer in self.layers: if(layer.name != "base"): self.ui["layers_list"].remove(layer.selector_row) self.layers = [self.base_layer,] self.select_layer(self.base_layer) thread = threading.Thread(target=self.open_image, args=(w, h)) thread.start() def on_zoom_toggled(self, sender): state = sender.get_active() self.ui["zoom_reveal"].set_reveal_child(state) if(not state): self.ui["zoom"].set_value(1) def on_zoom_changed(self, sender): threading.Thread(target=self.zoom_delay).start() def zoom_delay(self): if(not self.is_zooming): self.is_zooming = True time.sleep(0.5) GLib.idle_add(self.on_preview_draw, None, None) self.is_zooming = False def on_file_canceled(self, sender): self.ui["open_window"].hide() def on_preview_draw(self, sender, arg): if(self.is_editing): w = (self.ui["scroll_window"].get_allocated_width() - 12) * self.ui["zoom"].get_value() h = (self.ui["scroll_window"].get_allocated_height() - 12) * self.ui["zoom"].get_value() if(self.pheight != h) or (self.pwidth != w): thread = threading.Thread(target=self.resize_preview, args=(w, h)) thread.start() def on_preview_toggled(self, sender): if(sender.get_active()): threading.Thread(target=self.draw_hist, args=(self.original_image,)).start() self.show_original() else: threading.Thread(target=self.draw_hist, args=(self.image,)).start() self.show_current() def toggle_hist(self, sender): show = sender.get_active() self.ui["histogram_reveal"].set_reveal_child(show) def on_open(self, path): self.root.get_titlebar().set_subtitle("Raster Editor") if(path != None): # We have been sent here from another # activity, clear any existing profiles self.image_path = path dataPath = self.get_data_path() if(os.path.exists(dataPath)): os.unlink(dataPath) self.on_file_opened(None, path) def on_exit(self): if(self.is_exporting): return False else: fname = "/tmp/phf2-preview-%s.png" % getpass.getuser() if (os.path.exists(fname)): os.unlink(fname) self.root.get_titlebar().set_subtitle("") self.on_init() return True def show_original(self): self.ui["preview"].set_from_pixbuf(self.poriginal) if (not self.ui["original_toggle"].get_active()): self.ui["original_toggle"].set_active(True) def show_current(self): self.ui["preview"].set_from_pixbuf(self.pimage) if (self.ui["original_toggle"].get_active()): self.ui["original_toggle"].set_active(False) def on_layer_change(self, layer): if(self.has_loaded): if(not self.change_occurred): self.change_occurred = True thread = threading.Thread(target=self.update_image) thread.start() else: self.additional_change_occurred = True def on_lower_peak_toggled(self, sender): self.lower_peak_on = sender.get_active() if (self.lower_peak_on): thread = threading.Thread(target=self.process_peaks, args=(True,)) thread.start() else: thread = threading.Thread(target=self.update_image, args=(True,)) thread.start() def on_upper_peak_toggled(self, sender): self.upper_peak_on = sender.get_active() if (self.lower_peak_on): thread = threading.Thread(target=self.process_peaks, args=(True,)) thread.start() else: thread = threading.Thread(target=self.update_image, args=(True,)) thread.start() def image_opened(self, depth): self.root.get_titlebar().set_subtitle("%s (%s Bit)" % (self.image_path, depth)) self.hide_message() def on_export_clicked(self, sender): Export.ExportDialog(self.root, self.builder, self.awidth, self.aheight, self.get_export_image, self.on_export_complete, self.image_path) def on_export_complete(self, filename): self.is_exporting = False self.on_export_state_change() self.show_message("Export Complete!", "Your photo has been exported to '%s'" % filename) def on_export_state_change(self): self.ui["control_reveal"].set_sensitive(not self.is_exporting) self.ui["export_image"].set_sensitive(not self.is_exporting) self.ui["open_button"].set_sensitive(not self.is_exporting) def on_export_started(self): self.is_exporting = True self.on_export_state_change() def update_undo_state(self): self.ui["undo"].set_sensitive(self.undo_position > 0) self.ui["redo"].set_sensitive(len(self.undo_stack)-1 > self.undo_position) def on_undo(self, sender): self.pre_undo_layer_name = self.get_selected_layer().name self.undo_position -= 1 self.update_undo_state() self.update_from_undo_stack(self.undo_stack[self.undo_position]) def on_redo(self, sender): self.pre_undo_layer_name = self.get_selected_layer().name self.undo_position += 1 self.update_undo_state() self.update_from_undo_stack(self.undo_stack[self.undo_position]) def on_reset(self, sender): for layer in self.layers: layer.reset_tools() ## Background Tasks ## def open_image(self, w, h): self.load_image_data() try: self.resize_preview(w, h) except: pass while(self.image == None): time.sleep(1) GLib.idle_add(self.image_opened, str(self.image.dtype).replace("uint", "").replace("float", "")) time.sleep(1) self.has_loaded = True def resize_preview(self, w, h): # Inhibit undo stack to prevent # Adding an action on resize self.undoing = True self.original_image = cv2.imread(self.image_path, 2 | 1) height, width = self.original_image.shape[:2] self.aheight = height self.awidth = width self.pheight = h self.pwidth = w # Get fitting size ratio = float(w)/width if(height*ratio > h): ratio = float(h)/height nw = width * ratio nh = height * ratio # Do quick ui resize if(self.image != None) and (os.path.exists("/tmp/phf2-preview-%s.png" % getpass.getuser())): # If we have an edited version, show that self.pimage = GdkPixbuf.Pixbuf.new_from_file_at_scale("/tmp/phf2-preview-%s.png" % getpass.getuser(), int(nw), int(nh), True) GLib.idle_add(self.show_current) self.poriginal = GdkPixbuf.Pixbuf.new_from_file_at_scale(self.image_path, int(nw), int(nh), True) if(self.image == None): # Otherwise show the original GLib.idle_add(self.show_original) # Resize OPENCV Copy self.original_image = cv2.resize(self.original_image, (int(nw), int(nh)), interpolation = cv2.INTER_AREA) self.image_is_dirty = True self.image = numpy.copy(self.original_image) # Update image if (not self.change_occurred): self.change_occurred = True self.update_image() else: self.additional_change_occurred = True def update_image(self, immediate=False): if(not immediate): time.sleep(0.5) self.additional_change_occurred = False GLib.idle_add(self.start_work) image = numpy.copy(self.original_image) self.image = self.run_stack(image) self.image_is_dirty = False if(self.additional_change_occurred): self.update_image() else: self.save_image_data() self.draw_hist(self.image) self.process_peaks() self.update_preview() GLib.idle_add(self.stop_work) self.change_occurred = False self.undoing = False def run_stack(self, image, callback=None): if(not self.running_stack): self.running_stack = True baseImage = image.copy() for layer in self.layers: print(layer) image = layer.render_layer(baseImage, image, callback) self.running_stack = False return image else: while(self.running_stack): time.sleep(1) return self.run_stack(image, callback) def update_preview(self): fname = "/tmp/phf2-preview-%s.png" % getpass.getuser() if(os.path.exists(fname)): os.unlink(fname) cv2.imwrite(fname, self.image) self.pimage = GdkPixbuf.Pixbuf.new_from_file(fname) GLib.idle_add(self.show_current) def draw_hist(self, image): path = "/tmp/phf2-hist-%s.png" % getpass.getuser() Histogram.Histogram.draw_hist(image, path) GLib.idle_add(self.update_hist_ui, path) def update_hist_ui(self, path): try: self.ui["histogram"].set_from_pixbuf(GdkPixbuf.Pixbuf.new_from_file(path)) except: pass def process_peaks(self, do_update=False): bpp = float(str(self.image.dtype).replace("uint", "").replace("float", "")) if(self.upper_peak_on): self.image[(self.image == 2 ** bpp - 1).all(axis=2)] = 1 if(self.lower_peak_on): self.image[(self.image == 0).all(axis=2)] = 2 ** bpp - 2 if(do_update): self.update_preview() ## FILE STUFF ## def get_data_path(self): return "%s/.%s.pf2" % ("/".join(self.image_path.split("/")[:-1]), self.image_path.split("/")[-1:][0]) def save_image_data(self): path = self.get_data_path() print(path) f = open(path, "w") layerDict = {} layerOrder = [] for layer in self.layers: layerDict[layer.name] = layer.get_layer_dict() layerOrder.append(layer.name) if(not self.undoing) and (self.has_loaded): if(len(self.undo_stack)-1 != self.undo_position): self.undo_stack = self.undo_stack[:self.undo_position+1] if(self.undo_stack[self.undo_position] != {"layers": layerDict, "layer-order": layerOrder}): self.undo_stack += [{"layers": layerDict, "layer-order": layerOrder},] self.undo_position = len(self.undo_stack)-1 GLib.idle_add(self.update_undo_state) data = { "path":self.image_path, "format-revision":1, "layers": layerDict, "layer-order": layerOrder } f.write(str(data)) f.close() def load_image_data(self): path = self.get_data_path() loadDefaults = True if(os.path.exists(path)): f = open(path, 'r') sdata = f.read() try: data = ast.literal_eval(sdata) if(data["format-revision"] == 1): if("layer-order" not in data): # Backwards compatability data["layer-order"] = ["base",] for layer_name in data["layer-order"]: GLib.idle_add(self.create_layer_with_data, layer_name, data["layers"][layer_name]) self.undo_stack = [data,] self.undo_position = 0 loadDefaults = False except: GLib.idle_add(self.show_message,"Unable to load previous edits…", "The edit file for this photo is corrupted and could not be loaded.") if(loadDefaults): for layer in self.layers: for tool in layer.tools: GLib.idle_add(tool.reset) layerDict = {} layerOrder = [] for layer in self.layers: layerDict[layer.name] = layer.get_layer_dict() layerOrder.append(layer.name) self.undo_stack = [{"layers": layerDict, "layer-order": layerOrder}, ] self.undo_position = 0 GLib.idle_add(self.update_undo_state) time.sleep(2) self.undoing = False def create_layer_with_data(self, layer, data): if (layer == "base"): self.base_layer.set_from_layer_dict(data) else: GLib.idle_add(self.show_layers) ilayer = self.create_layer(layer, False) ilayer.set_from_layer_dict(data) def update_from_undo_stack(self, data): self.undoing = True self.delete_all_editable_layers() for layer_name in data["layer-order"]: if (layer_name == "base"): self.base_layer.set_from_layer_dict(data["layers"][layer_name]) else: ilayer = self.create_layer(layer_name, False, layer_name == self.pre_undo_layer_name) ilayer.set_from_layer_dict(data["layers"][layer_name]) self.show_layers() def get_export_image(self, w, h): GLib.idle_add(self.on_export_started) GLib.idle_add(self.show_message, "Exporting Photo", "Please wait…", True, True) img = cv2.imread(self.image_path, 2 | 1) img = cv2.resize(img, (int(w), int(h)), interpolation=cv2.INTER_AREA) img = self.run_stack(img, self.export_progress_callback) GLib.idle_add(self.show_message, "Exporting Photo", "Saving to filesystem…", True, True) GLib.idle_add(self.update_message_progress, 1, 1) return img def export_progress_callback(self, name, count, current): GLib.idle_add(self.show_message, "Exporting Photo", "Processing: %s" % name, True, True) GLib.idle_add(self.update_message_progress, current, count) ## Layers Stuff ## def preview_dragged(self, widget, event): x, y = widget.translate_coordinates(self.ui["preview"], event.x, event.y) draw = self.ui["mask_draw_toggle"].get_active() erase = self.ui["mask_erase_toggle"].get_active() layer = self.get_selected_layer() if((draw or erase) and layer.editable and self.current_layer_path): if (x < 0.0): x = 0 if (y < 0.0): y = 0 pwidth = self.pimage.get_width() pheight = self.pimage.get_height() if (x > pwidth): x = pwidth if (y > pheight): y = pheight print(x, y) if(not self.image_is_dirty): fill = (0, 0, 255) if(erase): fill = (255, 0, 0) preview = self.current_layer_path.add_point(int(x), int(y), (pheight, pwidth, 3), fill) # Bits per pixel bpp = float(str(self.image.dtype).replace("uint", "").replace("float", "")) # Pixel value range np = float(2 ** bpp - 1) self.image[preview == 255] = np cv2.imwrite("/tmp/phf2-preview-%s-drag.png" % getpass.getuser(), self.image) temppbuf = GdkPixbuf.Pixbuf.new_from_file("/tmp/phf2-preview-%s-drag.png" % getpass.getuser()) self.ui["preview"].set_from_pixbuf(temppbuf) self.on_layer_change(layer) self.mouse_down_coords_changed(widget, event) return True def new_path(self, widget, event): draw = self.ui["mask_draw_toggle"].get_active() erase = self.ui["mask_erase_toggle"].get_active() layer = self.get_selected_layer() if((draw or erase) and layer.editable): print(self.pimage.get_width(), self.pimage.get_height()) width = self.pimage.get_width() size = self.ui["mask_brush_size"].get_value() feather = self.ui["mask_brush_feather"].get_value() self.current_layer_path = layer.mask.get_new_path(size, feather, float(self.awidth)/float(width), draw) def mask_draw_toggled(self, widget): self.ui["mask_erase_toggle"].set_active(not widget.get_active()) def mask_erase_toggled(self, widget): self.ui["mask_draw_toggle"].set_active(not widget.get_active()) self.ui["mask_brush_feather_scale"].set_sensitive(not widget.get_active()) def edit_mask_toggled(self, widget): self.ui["layer_mask_reveal"].set_reveal_child(widget.get_active()) self.ui["mask_draw_toggle"].set_active(widget.get_active()) self.ui["mask_erase_toggle"].set_active(False) self.ui["scroll_window"].queue_draw() def update_layer_opacity(self, sender): layer = self.get_selected_layer() layer.set_opacity(sender.get_value()) def create_layer(self, layer_name, is_base, select = False): layer = Layer.Layer(is_base, layer_name, self.on_layer_change) for tool in self.tools: tool_instance = tool() layer.add_tool(tool_instance) self.layers += [layer,] GLib.idle_add(self.create_layer_ui, layer, select) return layer def create_layer_ui(self, layer, select): layer_box = Gtk.HBox() layer_box.set_hexpand(False) layer_box.set_halign(Gtk.Align.START) layer_toggle = Gtk.CheckButton() layer_toggle.set_sensitive(layer.editable) layer_toggle.set_active(layer.enabled) layer_toggle.set_hexpand(False) layer_toggle.set_halign(Gtk.Align.START) layer_toggle.set_margin_right(8) layer_toggle.set_margin_left(8) layer_toggle.set_margin_top(4) layer_toggle.set_margin_bottom(4) layer_toggle.connect("toggled", self.toggle_layer, layer) layer_label = Gtk.Label() layer_label.set_label(layer.name) if(layer.name == "base"): layer_label.set_label("Base Layer") layer_label.set_hexpand(True) layer_label.set_halign(Gtk.Align.FILL) layer_label.set_margin_top(4) layer_label.set_margin_bottom(4) layer_box.add(layer_toggle) layer_box.add(layer_label) layer.show_all() layer_box.show_all() self.ui["layers_list"].add(layer_box) layer.selector_row = layer_box.get_parent() self.ui["tool_box_stack"].add(layer.tool_box) self.ui["tool_stack"].add(layer.tool_stack) if(select): self.select_layer(layer) def layer_ui_activated(self, widget, row): layer_index = row.get_index() self.ui["tool_stack"].set_visible_child(self.layers[layer_index].tool_stack) self.ui["tool_box_stack"].set_visible_child(self.layers[layer_index].tool_box) self.ui["remove_layer_button"].set_sensitive(self.layers[layer_index].editable) self.ui["edit_layer_mask_button"].set_sensitive(self.layers[layer_index].editable) self.ui["layer_opacity_scale"].set_sensitive(self.layers[layer_index].editable) self.ui["layer_blend_mode"].set_sensitive(self.layers[layer_index].editable) self.ui["layer_blend_mode"].set_active(["additive", "overlay"].index(self.layers[layer_index].blend_mode)) self.ui["layer_opacity"].set_value(self.layers[layer_index].opacity) if(self.ui["edit_layer_mask_button"].get_active()): self.ui["edit_layer_mask_button"].set_active(self.layers[layer_index].editable) def toggle_layer(self, sender, layer): layer.set_enabled(sender.get_active()) def new_layer_button_clicked(self, widget): self.show_layers() # Allocate an un-used layer name layer_number = len(self.layers) layer_name = "Layer %i" % layer_number while(self.layer_exists(layer_name)): layer_number += 1 layer_name = "Layer %i" % layer_number # Create the layer layer = self.create_layer(layer_name, False) layer.set_size(self.awidth, self.aheight) # Save changes threading.Thread(target=self.save_image_data).start() self.on_layer_change(layer) def remove_layer_button_clicked(self, widget): layer_row = self.ui["layers_list"].get_selected_row() selected_index = 1 new_layers = [] for layer in self.layers: if(layer.selector_row != layer_row): new_layers += [layer] else: selected_index = self.layers.index(layer) self.ui["layers_list"].remove(layer_row) self.layers = new_layers # Select next layer self.select_layer(self.layers[selected_index -1]) if (len(self.layers) == 1): self.ui["layers_reveal"].set_reveal_child(False) if(widget != None): # Only do this if the layer was actualy deleted by the user # and not by the undo-redo system for example # Save changes threading.Thread(target=self.save_image_data).start() self.on_layer_change(self.get_selected_layer()) def get_selected_layer(self): layer_row = self.ui["layers_list"].get_selected_row() for layer in self.layers: if (layer.selector_row == layer_row): return layer def layer_exists(self, layer_name): for layer in self.layers: if(layer.name == layer_name): return True return False def show_layers(self): self.ui["layers_reveal"].set_reveal_child(True) def select_layer(self, layer): self.ui["layers_list"].select_row(layer.selector_row) self.layer_ui_activated(self.ui["layers_list"], layer.selector_row) def delete_all_editable_layers(self): count = len(self.layers) -1 while(len(self.layers) != 1): self.select_layer(self.layers[1]) self.remove_layer_button_clicked(None) def draw_ui_brush_circle(self, widget, context): drawing = self.ui["edit_layer_mask_button"].get_active() if(drawing): size = self.ui["mask_brush_size"].get_value() if(self.mousedown): context.set_source_rgb(255, 0, 0) else: context.set_source_rgb(255, 255, 255) context.arc(self.mousex, self.mousey, size/2.0, 0.0, 2 * numpy.pi); context.stroke() def mouse_coords_changed(self, widget, event): self.mousedown = False self.mousex, self.mousey = event.x, event.y widget.queue_draw() def mouse_down_coords_changed(self, widget, event): self.mousedown = True self.mousex, self.mousey = widget.translate_coordinates(self.ui["scroll_window"], event.x, event.y) widget.queue_draw() def brush_size_changed(self, sender): self.ui["scroll_window"].queue_draw() def layer_blend_mode_changed(self, sender): layer = self.get_selected_layer() layer.set_blending_mode(sender.get_active_text().lower())