Created
July 1, 2015 13:27
-
-
Save havocp/d58444fbd40c735fec6b to your computer and use it in GitHub Desktop.
pygtk app to extract pixel sizes and colors from mockups
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| #! /usr/bin/python | |
| # this script is Copyright 2006, Red Hat, Inc. Licensed under the GNU | |
| # General Public License, version 2 or any later version. | |
| import gtk | |
| import sys | |
| import cairo | |
| import struct | |
| PADDING = 10 | |
| class ImageWindow (gtk.Window): | |
| # are given drawing area coords a pixel inside the pixbuf | |
| def _coords_inside_pixbuf(self, x, y): | |
| pixbuf_x = (x - PADDING) / self.scale_x | |
| pixbuf_y = (y - PADDING) / self.scale_y | |
| if pixbuf_x < 0 or pixbuf_y < 0: | |
| return 0 | |
| if pixbuf_x >= self.pixbuf.get_width(): | |
| return 0 | |
| if pixbuf_y >= self.pixbuf.get_height(): | |
| return 0 | |
| return 1 | |
| def _drawing_to_pixbuf_x(self, x): | |
| pixbuf_x = (x - PADDING) / self.scale_x | |
| if pixbuf_x < 0: | |
| pixbuf_x = 0 | |
| if pixbuf_x > self.pixbuf.get_width(): | |
| pixbuf_x = self.pixbuf.get_width() | |
| return int(round(pixbuf_x)) | |
| def _drawing_to_pixbuf_y(self, y): | |
| pixbuf_y = (y - PADDING) / self.scale_y | |
| if pixbuf_y < 0: | |
| pixbuf_y = 0 | |
| if pixbuf_y > self.pixbuf.get_height(): | |
| pixbuf_y = self.pixbuf.get_height() | |
| return int(round(pixbuf_y)) | |
| def _pixbuf_to_drawing_x(self, x): | |
| return int(round(x * self.scale_x + PADDING)) | |
| def _pixbuf_to_drawing_y(self, y): | |
| return int(round(y * self.scale_y + PADDING)) | |
| def __init__(self, filename): | |
| gtk.Window.__init__(self) | |
| self.filename = filename | |
| self.pixbuf = gtk.gdk.pixbuf_new_from_file(filename) | |
| self.scale_x = -1 | |
| self.scale_y = -1 | |
| self.pixbuf_x = -1 | |
| self.pixbuf_y = -1 | |
| self.inside_pixbuf = 0 | |
| self.click_pixbuf_x = -1 | |
| self.click_pixbuf_y = -1 | |
| vbox = gtk.VBox() | |
| self.add(vbox) | |
| self.statusbar = gtk.Statusbar() | |
| self.statusbar_message_id = -1 | |
| vbox.pack_end(self.statusbar, 0, 0) | |
| self.status_color_box = gtk.DrawingArea() | |
| self.status_color_box.set_size_request(16, 16) | |
| self.statusbar.pack_start(self.status_color_box, 0, 0) | |
| self.statusbar.reorder_child(self.status_color_box, 0) | |
| sb = gtk.ScrolledWindow() | |
| sb.set_policy(gtk.POLICY_AUTOMATIC, gtk.POLICY_AUTOMATIC) | |
| self.drawing = gtk.DrawingArea() | |
| sb.add_with_viewport(self.drawing) | |
| vbox.pack_start(sb, 1, 1) | |
| self.drawing.add_events(gtk.gdk.POINTER_MOTION_MASK | | |
| gtk.gdk.POINTER_MOTION_HINT_MASK | gtk.gdk.BUTTON_PRESS_MASK | | |
| gtk.gdk.BUTTON_RELEASE_MASK) | |
| self.drawing.connect("expose-event", self.on_drawing_expose) | |
| self.drawing.connect("motion-notify-event", self.on_drawing_motion) | |
| self.drawing.connect("button-press-event", self.on_drawing_press) | |
| self.drawing.connect("button-release-event", self.on_drawing_release) | |
| self.add_events(gtk.gdk.KEY_PRESS_MASK) | |
| self.connect("key-press-event", self.on_window_key) | |
| default_scale = 3 | |
| self.set_scale(default_scale) | |
| vbox.show_all() | |
| w = self.pixbuf.get_width()*default_scale + 60 | |
| h = self.pixbuf.get_height()*default_scale + 60 | |
| if w > 1000: | |
| w = 1000 | |
| if h > 700: | |
| h = 700 | |
| self.set_default_size(w, h) | |
| def set_scale(self, factor): | |
| if factor == self.scale_x and factor == self.scale_y: | |
| return | |
| self.scale_x = factor | |
| self.scale_y = factor | |
| w = self.pixbuf.get_width() | |
| h = self.pixbuf.get_height() | |
| self.drawing.set_size_request(w * self.scale_x + PADDING*2, | |
| h * self.scale_y + PADDING*2) | |
| self.set_title("%s %dx%d scaled %d%%" % | |
| (self.filename, w, h, factor*100)) | |
| self.drawing.queue_draw() | |
| if (self.drawing.flags() & gtk.REALIZED) != 0: | |
| self.update_from_mouse_location() | |
| def on_drawing_expose(self, obj, event): | |
| cr = event.window.cairo_create() | |
| cr.rectangle(event.area.x, event.area.y, event.area.width, event.area.height) | |
| cr.clip() | |
| cr.set_antialias(cairo.ANTIALIAS_NONE) | |
| cr.translate(PADDING, PADDING) | |
| cr.scale(self.scale_x, self.scale_y) | |
| cr.set_source_pixbuf(self.pixbuf, 0, 0) | |
| try: | |
| ## try to avoid fuzzy scaling since we care about pixels | |
| cr.get_source().set_filter(cairo.FILTER_NEAREST) | |
| except: | |
| ## set_filter not in the fc5 version of pygtk | |
| pass | |
| cr.paint() | |
| cr.set_line_join(cairo.LINE_JOIN_MITER) | |
| cr.set_line_cap(cairo.LINE_CAP_BUTT) | |
| if self.scale_x >= 4: | |
| ## draw a grid | |
| w = self.pixbuf.get_width() | |
| h = self.pixbuf.get_height() | |
| cr.set_source_rgba(0.5, 0.5, 0.5, 0.3) | |
| cr.set_line_width(1.0/self.scale_x) | |
| i = 0 | |
| while i < w: | |
| x = i | |
| cr.move_to(x, 0) | |
| cr.line_to(x, h) | |
| cr.stroke() | |
| i = i + 1 | |
| cr.set_line_width(1.0/self.scale_y) | |
| i = 0 | |
| while i < h: | |
| y = i | |
| cr.move_to(0, y) | |
| cr.line_to(w, y) | |
| cr.stroke() | |
| i = i + 1 | |
| ## Draw a ruler line if we clicked | |
| if self.click_pixbuf_x >= 0 and self.click_pixbuf_y >= 0: | |
| dx = self.pixbuf_x - self.click_pixbuf_x | |
| dy = self.pixbuf_y - self.click_pixbuf_y | |
| cr.set_source_rgba(0.5, 0.5, 0.5, 0.7) | |
| cr.set_line_width(1.0) | |
| if abs(dx) >= abs(dy): | |
| # horizontal | |
| cr.move_to(self.click_pixbuf_x, self.click_pixbuf_y) | |
| cr.line_to(self.pixbuf_x, self.click_pixbuf_y) | |
| cr.stroke() | |
| else: | |
| # vertical | |
| cr.move_to(self.click_pixbuf_x, self.click_pixbuf_y) | |
| cr.line_to(self.click_pixbuf_x, self.pixbuf_y) | |
| cr.stroke() | |
| if self.inside_pixbuf and self.pixbuf_x < self.pixbuf.get_width() and \ | |
| self.pixbuf_y < self.pixbuf.get_height(): | |
| ## highlight the pixel the mouse is over | |
| cr.set_line_width(1.0) | |
| cr.set_source_rgba(1.0, 1.0, 1.0, 0.3) | |
| cr.rectangle(self.pixbuf_x, self.pixbuf_y, | |
| 1, 1) | |
| cr.fill() | |
| cr.set_source_rgba(0.0, 0.0, 0.0, 0.4) | |
| cr.rectangle(self.pixbuf_x - .5, self.pixbuf_y - .5, | |
| 2, 2) | |
| cr.stroke() | |
| cr.set_source_rgba(1.0, 1.0, 1.0, 0.4) | |
| cr.rectangle(self.pixbuf_x - 1.5, self.pixbuf_y - 1.5, | |
| 4, 4) | |
| cr.stroke() | |
| return 0 | |
| def repaint_ruler_line(self): | |
| if self.click_pixbuf_x >= 0 and self.click_pixbuf_y >= 0 and \ | |
| self.pixbuf_x >= 0 and self.pixbuf_y >= 0: | |
| old_x1 = self._pixbuf_to_drawing_x(self.click_pixbuf_x) | |
| old_y1 = self._pixbuf_to_drawing_y(self.click_pixbuf_y) | |
| old_x2 = self._pixbuf_to_drawing_x(self.pixbuf_x) | |
| old_y2 = self._pixbuf_to_drawing_x(self.pixbuf_y) | |
| if old_x1 > old_x2: | |
| tmp = old_x1 | |
| old_x1 = old_x2 | |
| old_x2 = tmp | |
| if old_y1 > old_y2: | |
| tmp = old_y1 | |
| old_y1 = old_y2 | |
| old_y2 = tmp | |
| self.drawing.queue_draw_area(old_x1 - 2 * self.scale_x, | |
| old_y1 - 2 * self.scale_y, | |
| old_x2 - old_x1 + 4 * self.scale_x, | |
| old_y2 - old_y1 + 4 * self.scale_y) | |
| def update_from_mouse_location(self): | |
| (x, y, mask) = self.drawing.window.get_pointer() | |
| pixbuf_x = self._drawing_to_pixbuf_x(x) | |
| pixbuf_y = self._drawing_to_pixbuf_y(y) | |
| self.inside_pixbuf = self._coords_inside_pixbuf(x, y) | |
| self.set_pixbuf_coords(pixbuf_x, pixbuf_y) | |
| return 0 | |
| def on_drawing_motion(self, obj, event): | |
| self.update_from_mouse_location() | |
| return 0 | |
| def on_drawing_press(self, obj, event): | |
| if event.button != 1: | |
| return 0 | |
| gtk.gdk.pointer_grab(self.drawing.window, | |
| time=event.time, | |
| event_mask = (gtk.gdk.POINTER_MOTION_MASK | | |
| gtk.gdk.POINTER_MOTION_HINT_MASK | gtk.gdk.BUTTON_PRESS_MASK | | |
| gtk.gdk.BUTTON_RELEASE_MASK)) | |
| pixbuf_x = self._drawing_to_pixbuf_x(event.x) | |
| pixbuf_y = self._drawing_to_pixbuf_y(event.y) | |
| self.click_pixbuf_x = pixbuf_x | |
| self.click_pixbuf_y = pixbuf_y | |
| self.repaint_ruler_line() | |
| return 1 | |
| def on_drawing_release(self, obj, event): | |
| if self.click_pixbuf_x >= 0 and self.click_pixbuf_y >= 0: | |
| gtk.gdk.pointer_ungrab(time=event.time) | |
| self.drawing.queue_draw() # just repaint it all | |
| self.click_pixbuf_x = -1 | |
| self.click_pixbuf_x = -1 | |
| return 1 | |
| def on_window_key(self, obj, event): | |
| keyname = gtk.gdk.keyval_name(event.keyval) | |
| if keyname == "plus" or keyname == "equal": | |
| if self.scale_x < 20: | |
| self.set_scale(self.scale_x + 1) | |
| elif keyname == "minus": | |
| if self.scale_x >= 2: | |
| self.set_scale(self.scale_x - 1) | |
| elif keyname == "escape": | |
| gtk.gdk.pointer_ungrab(time=event.time) | |
| else: | |
| print "No action for key " + keyname | |
| print "Press + or - to zoom, Escape to ungrab pointer" | |
| return 0 | |
| return 1 | |
| def repaint_pointer_highlight(self, pixbuf_x, pixbuf_y): | |
| drawing_x = self._pixbuf_to_drawing_x(pixbuf_x - 3) | |
| drawing_y = self._pixbuf_to_drawing_y(pixbuf_y - 3) | |
| self.drawing.queue_draw_area(drawing_x, drawing_y, | |
| 7 * self.scale_x, | |
| 7 * self.scale_y) | |
| def set_status(self, text): | |
| if self.statusbar_message_id >= 0: | |
| self.statusbar.remove(0, self.statusbar_message_id) | |
| self.statusbar_message_id = -1 | |
| self.statusbar_message_id = self.statusbar.push(0, text) | |
| def set_pixbuf_coords(self, pixbuf_x, pixbuf_y): | |
| if pixbuf_x == self.pixbuf_x and pixbuf_y == self.pixbuf_y: | |
| return | |
| # be sure we undraw the old | |
| self.repaint_ruler_line() | |
| self.repaint_pointer_highlight(self.pixbuf_x, self.pixbuf_y) | |
| self.pixbuf_x = pixbuf_x | |
| self.pixbuf_y = pixbuf_y | |
| # and draw the new | |
| self.repaint_ruler_line() | |
| self.repaint_pointer_highlight(self.pixbuf_x, self.pixbuf_y) | |
| if pixbuf_x < self.pixbuf.get_width() and pixbuf_y < self.pixbuf.get_height(): | |
| ## this probably copies the whole image around - very peppy | |
| pixels = self.pixbuf.get_pixels() | |
| offset = pixbuf_y * self.pixbuf.get_rowstride() + pixbuf_x * self.pixbuf.get_n_channels() | |
| data = pixels[offset:offset+self.pixbuf.get_n_channels()] | |
| if len(data) == 4: | |
| (r, g, b, a) = struct.unpack("BBBB", data) | |
| elif len(data) == 3: | |
| (r, g, b) = struct.unpack("BBB", data) | |
| a = 255 | |
| else: | |
| raise "somehow data has len %d" % len(data) | |
| self.status_color_box.modify_bg(gtk.STATE_NORMAL, | |
| gtk.gdk.Color(r*255, g*255, b*255)) | |
| pixel_desc = "%2x%2x%2x alpha %2x at coordinates %d,%d" % (r, g, b, a, self.pixbuf_x, self.pixbuf_y) | |
| else: | |
| pixel_desc = "no pixel" | |
| self.status_color_box.modify_bg(gtk.STATE_NORMAL, None) | |
| delta_desc = "" | |
| if self.click_pixbuf_x >= 0 and self.click_pixbuf_y >= 0: | |
| dx = self.pixbuf_x - self.click_pixbuf_x | |
| dy = self.pixbuf_y - self.click_pixbuf_y | |
| if abs(dx) >= abs(dy): | |
| # horizontal | |
| dy = 0 | |
| else: | |
| # vertical | |
| dx = 0 | |
| delta_desc = "dx %d dy %d" % (dx, dy) | |
| self.set_status("%s %s" % (pixel_desc, delta_desc)) | |
| def main(): | |
| if len(sys.argv) < 2: | |
| raise "have to provide image filenames" | |
| for arg in sys.argv[1:]: | |
| window = ImageWindow(arg) | |
| window.show() | |
| window.connect("destroy", lambda object: gtk.main_quit()) | |
| gtk.main() | |
| main() | |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment