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Diffstat (limited to 'invoice/graph/cairoplot.py')
| -rwxr-xr-x | invoice/graph/cairoplot.py | 2336 |
1 files changed, 2336 insertions, 0 deletions
diff --git a/invoice/graph/cairoplot.py b/invoice/graph/cairoplot.py new file mode 100755 index 0000000..a15f329 --- /dev/null +++ b/invoice/graph/cairoplot.py @@ -0,0 +1,2336 @@ +#!/usr/bin/env python +# -*- coding: utf-8 -*- + +# CairoPlot.py +# +# Copyright (c) 2008 Rodrigo Moreira Araújo +# +# Author: Rodrigo Moreiro Araujo <alf.rodrigo@gmail.com> +# +# This program is free software; you can redistribute it and/or +# modify it under the terms of the GNU Lesser General Public License +# as published by the Free Software Foundation; either version 2 of +# the License, or (at your option) any later version. +# +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU Lesser General Public +# License along with this program; if not, write to the Free Software +# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 +# USA + +#Contributor: João S. O. Bueno + +#TODO: review BarPlot Code +#TODO: x_label colision problem on Horizontal Bar Plot +#TODO: y_label's eat too much space on HBP + + +__version__ = 1.2 + +import cairo +import math +import random +from series import Series, Group, Data + +HORZ = 0 +VERT = 1 +NORM = 2 + +COLORS = {"red" : (1.0,0.0,0.0,1.0), "lime" : (0.0,1.0,0.0,1.0), "blue" : (0.0,0.0,1.0,1.0), + "maroon" : (0.5,0.0,0.0,1.0), "green" : (0.0,0.5,0.0,1.0), "navy" : (0.0,0.0,0.5,1.0), + "yellow" : (1.0,1.0,0.0,1.0), "magenta" : (1.0,0.0,1.0,1.0), "cyan" : (0.0,1.0,1.0,1.0), + "orange" : (1.0,0.5,0.0,1.0), "white" : (1.0,1.0,1.0,1.0), "black" : (0.0,0.0,0.0,1.0), + "gray" : (0.5,0.5,0.5,1.0), "light_gray" : (0.9,0.9,0.9,1.0), + "transparent" : (0.0,0.0,0.0,0.0)} + +THEMES = {"black_red" : [(0.0,0.0,0.0,1.0), (1.0,0.0,0.0,1.0)], + "red_green_blue" : [(1.0,0.0,0.0,1.0), (0.0,1.0,0.0,1.0), (0.0,0.0,1.0,1.0)], + "red_orange_yellow" : [(1.0,0.2,0.0,1.0), (1.0,0.7,0.0,1.0), (1.0,1.0,0.0,1.0)], + "yellow_orange_red" : [(1.0,1.0,0.0,1.0), (1.0,0.7,0.0,1.0), (1.0,0.2,0.0,1.0)], + "rainbow" : [(1.0,0.0,0.0,1.0), (1.0,0.5,0.0,1.0), (1.0,1.0,0.0,1.0), (0.0,1.0,0.0,1.0), (0.0,0.0,1.0,1.0), (0.3, 0.0, 0.5,1.0), (0.5, 0.0, 1.0, 1.0)]} + +def colors_from_theme( theme, series_length, mode = 'solid' ): + colors = [] + if theme not in THEMES.keys() : + raise Exception, "Theme not defined" + color_steps = THEMES[theme] + n_colors = len(color_steps) + if series_length <= n_colors: + colors = [color + tuple([mode]) for color in color_steps[0:n_colors]] + else: + iterations = [(series_length - n_colors)/(n_colors - 1) for i in color_steps[:-1]] + over_iterations = (series_length - n_colors) % (n_colors - 1) + for i in range(n_colors - 1): + if over_iterations <= 0: + break + iterations[i] += 1 + over_iterations -= 1 + for index,color in enumerate(color_steps[:-1]): + colors.append(color + tuple([mode])) + if iterations[index] == 0: + continue + next_color = color_steps[index+1] + color_step = ((next_color[0] - color[0])/(iterations[index] + 1), + (next_color[1] - color[1])/(iterations[index] + 1), + (next_color[2] - color[2])/(iterations[index] + 1), + (next_color[3] - color[3])/(iterations[index] + 1)) + for i in range( iterations[index] ): + colors.append((color[0] + color_step[0]*(i+1), + color[1] + color_step[1]*(i+1), + color[2] + color_step[2]*(i+1), + color[3] + color_step[3]*(i+1), + mode)) + colors.append(color_steps[-1] + tuple([mode])) + return colors + + +def other_direction(direction): + "explicit is better than implicit" + if direction == HORZ: + return VERT + else: + return HORZ + +#Class definition + +class Plot(object): + def __init__(self, + surface=None, + data=None, + width=640, + height=480, + background=None, + border = 0, + x_labels = None, + y_labels = None, + series_colors = None): + random.seed(2) + self.create_surface(surface, width, height) + self.dimensions = {} + self.dimensions[HORZ] = width + self.dimensions[VERT] = height + self.context = cairo.Context(self.surface) + self.labels={} + self.labels[HORZ] = x_labels + self.labels[VERT] = y_labels + self.load_series(data, x_labels, y_labels, series_colors) + self.font_size = 10 + self.set_background (background) + self.border = border + self.borders = {} + self.line_color = (0.5, 0.5, 0.5) + self.line_width = 0.5 + self.label_color = (0.0, 0.0, 0.0) + self.grid_color = (0.8, 0.8, 0.8) + + def create_surface(self, surface, width=None, height=None): + self.filename = None + if isinstance(surface, cairo.Surface): + self.surface = surface + return + if not type(surface) in (str, unicode): + raise TypeError("Surface should be either a Cairo surface or a filename, not %s" % surface) + sufix = surface.rsplit(".")[-1].lower() + self.filename = surface + if sufix == "png": + self.surface = cairo.ImageSurface(cairo.FORMAT_ARGB32, width, height) + elif sufix == "ps": + self.surface = cairo.PSSurface(surface, width, height) + elif sufix == "pdf": + self.surface = cairo.PSSurface(surface, width, height) + else: + if sufix != "svg": + self.filename += ".svg" + self.surface = cairo.SVGSurface(self.filename, width, height) + + def commit(self): + try: + self.context.show_page() + if self.filename and self.filename.endswith(".png"): + self.surface.write_to_png(self.filename) + else: + self.surface.finish() + except cairo.Error: + pass + + def load_series (self, data, x_labels=None, y_labels=None, series_colors=None): + self.series_labels = [] + self.series = None + + #The pretty way + #if not isinstance(data, Series): + # # Not an instance of Series + # self.series = Series(data) + #else: + # self.series = data + # + #self.series_labels = self.series.get_names() + + #TODO: Remove on next version + # The ugly way, keeping retrocompatibility... + if callable(data) or type(data) is list and callable(data[0]): # Lambda or List of lambdas + self.series = data + self.series_labels = None + elif isinstance(data, Series): # Instance of Series + self.series = data + self.series_labels = data.get_names() + else: # Anything else + self.series = Series(data) + self.series_labels = self.series.get_names() + + #TODO: allow user passed series_widths + self.series_widths = [1.0 for group in self.series] + + #TODO: Remove on next version + self.process_colors( series_colors ) + + def process_colors( self, series_colors, length = None, mode = 'solid' ): + #series_colors might be None, a theme, a string of colors names or a list of color tuples + if length is None : + length = len( self.series.to_list() ) + + #no colors passed + if not series_colors: + #Randomize colors + self.series_colors = [ [random.random() for i in range(3)] + [1.0, mode] for series in range( length ) ] + else: + #Just theme pattern + if not hasattr( series_colors, "__iter__" ): + theme = series_colors + self.series_colors = colors_from_theme( theme.lower(), length ) + + #Theme pattern and mode + elif not hasattr(series_colors, '__delitem__') and not hasattr( series_colors[0], "__iter__" ): + theme = series_colors[0] + mode = series_colors[1] + self.series_colors = colors_from_theme( theme.lower(), length, mode ) + + #List + else: + self.series_colors = series_colors + for index, color in enumerate( self.series_colors ): + #element is a color name + if not hasattr(color, "__iter__"): + self.series_colors[index] = COLORS[color.lower()] + tuple([mode]) + #element is rgb tuple instead of rgba + elif len( color ) == 3 : + self.series_colors[index] += (1.0,mode) + #element has 4 elements, might be rgba tuple or rgb tuple with mode + elif len( color ) == 4 : + #last element is mode + if not hasattr(color[3], "__iter__"): + self.series_colors[index] += tuple([color[3]]) + self.series_colors[index][3] = 1.0 + #last element is alpha + else: + self.series_colors[index] += tuple([mode]) + + def get_width(self): + return self.surface.get_width() + + def get_height(self): + return self.surface.get_height() + + def set_background(self, background): + if background is None: + self.background = (0.0,0.0,0.0,0.0) + elif type(background) in (cairo.LinearGradient, tuple): + self.background = background + elif not hasattr(background,"__iter__"): + colors = background.split(" ") + if len(colors) == 1 and colors[0] in COLORS: + self.background = COLORS[background] + elif len(colors) > 1: + self.background = cairo.LinearGradient(self.dimensions[HORZ] / 2, 0, self.dimensions[HORZ] / 2, self.dimensions[VERT]) + for index,color in enumerate(colors): + self.background.add_color_stop_rgba(float(index)/(len(colors)-1),*COLORS[color]) + else: + raise TypeError ("Background should be either cairo.LinearGradient or a 3/4-tuple, not %s" % type(background)) + + def render_background(self): + if isinstance(self.background, cairo.LinearGradient): + self.context.set_source(self.background) + else: + self.context.set_source_rgba(*self.background) + self.context.rectangle(0,0, self.dimensions[HORZ], self.dimensions[VERT]) + self.context.fill() + + def render_bounding_box(self): + self.context.set_source_rgba(*self.line_color) + self.context.set_line_width(self.line_width) + self.context.rectangle(self.border, self.border, + self.dimensions[HORZ] - 2 * self.border, + self.dimensions[VERT] - 2 * self.border) + self.context.stroke() + + def render(self): + pass + +class ScatterPlot( Plot ): + def __init__(self, + surface=None, + data=None, + errorx=None, + errory=None, + width=640, + height=480, + background=None, + border=0, + axis = False, + dash = False, + discrete = False, + dots = 0, + grid = False, + series_legend = False, + x_labels = None, + y_labels = None, + x_bounds = None, + y_bounds = None, + z_bounds = None, + x_title = None, + y_title = None, + series_colors = None, + circle_colors = None ): + + self.bounds = {} + self.bounds[HORZ] = x_bounds + self.bounds[VERT] = y_bounds + self.bounds[NORM] = z_bounds + self.titles = {} + self.titles[HORZ] = x_title + self.titles[VERT] = y_title + self.max_value = {} + self.axis = axis + self.discrete = discrete + self.dots = dots + self.grid = grid + self.series_legend = series_legend + self.variable_radius = False + self.x_label_angle = math.pi / 2.5 + self.circle_colors = circle_colors + + Plot.__init__(self, surface, data, width, height, background, border, x_labels, y_labels, series_colors) + + self.dash = None + if dash: + if hasattr(dash, "keys"): + self.dash = [dash[key] for key in self.series_labels] + elif max([hasattr(item,'__delitem__') for item in data]) : + self.dash = dash + else: + self.dash = [dash] + + self.load_errors(errorx, errory) + + def convert_list_to_tuple(self, data): + #Data must be converted from lists of coordinates to a single + # list of tuples + out_data = zip(*data) + if len(data) == 3: + self.variable_radius = True + return out_data + + def load_series(self, data, x_labels = None, y_labels = None, series_colors=None): + #TODO: In cairoplot 2.0 keep only the Series instances + + # Convert Data and Group to Series + if isinstance(data, Data) or isinstance(data, Group): + data = Series(data) + + # Series + if isinstance(data, Series): + for group in data: + for item in group: + if len(item) is 3: + self.variable_radius = True + + #Dictionary with lists + if hasattr(data, "keys") : + if hasattr( data.values()[0][0], "__delitem__" ) : + for key in data.keys() : + data[key] = self.convert_list_to_tuple(data[key]) + elif len(data.values()[0][0]) == 3: + self.variable_radius = True + #List + elif hasattr(data[0], "__delitem__") : + #List of lists + if hasattr(data[0][0], "__delitem__") : + for index,value in enumerate(data) : + data[index] = self.convert_list_to_tuple(value) + #List + elif type(data[0][0]) != type((0,0)): + data = self.convert_list_to_tuple(data) + #Three dimensional data + elif len(data[0][0]) == 3: + self.variable_radius = True + + #List with three dimensional tuples + elif len(data[0]) == 3: + self.variable_radius = True + Plot.load_series(self, data, x_labels, y_labels, series_colors) + self.calc_boundaries() + self.calc_labels() + + def load_errors(self, errorx, errory): + self.errors = None + if errorx == None and errory == None: + return + self.errors = {} + self.errors[HORZ] = None + self.errors[VERT] = None + #asimetric errors + if errorx and hasattr(errorx[0], "__delitem__"): + self.errors[HORZ] = errorx + #simetric errors + elif errorx: + self.errors[HORZ] = [errorx] + #asimetric errors + if errory and hasattr(errory[0], "__delitem__"): + self.errors[VERT] = errory + #simetric errors + elif errory: + self.errors[VERT] = [errory] + + def calc_labels(self): + if not self.labels[HORZ]: + amplitude = self.bounds[HORZ][1] - self.bounds[HORZ][0] + if amplitude % 10: #if horizontal labels need floating points + self.labels[HORZ] = ["%.2lf" % (float(self.bounds[HORZ][0] + (amplitude * i / 10.0))) for i in range(11) ] + else: + self.labels[HORZ] = ["%d" % (int(self.bounds[HORZ][0] + (amplitude * i / 10.0))) for i in range(11) ] + if not self.labels[VERT]: + amplitude = self.bounds[VERT][1] - self.bounds[VERT][0] + if amplitude % 10: #if vertical labels need floating points + self.labels[VERT] = ["%.2lf" % (float(self.bounds[VERT][0] + (amplitude * i / 10.0))) for i in range(11) ] + else: + self.labels[VERT] = ["%d" % (int(self.bounds[VERT][0] + (amplitude * i / 10.0))) for i in range(11) ] + + def calc_extents(self, direction): + self.context.set_font_size(self.font_size * 0.8) + self.max_value[direction] = max(self.context.text_extents(item)[2] for item in self.labels[direction]) + self.borders[other_direction(direction)] = self.max_value[direction] + self.border + 20 + + def calc_boundaries(self): + #HORZ = 0, VERT = 1, NORM = 2 + min_data_value = [0,0,0] + max_data_value = [0,0,0] + + for group in self.series: + if type(group[0].content) in (int, float, long): + group = [Data((index, item.content)) for index,item in enumerate(group)] + + for point in group: + for index, item in enumerate(point.content): + if item > max_data_value[index]: + max_data_value[index] = item + elif item < min_data_value[index]: + min_data_value[index] = item + + if not self.bounds[HORZ]: + self.bounds[HORZ] = (min_data_value[HORZ], max_data_value[HORZ]) + if not self.bounds[VERT]: + self.bounds[VERT] = (min_data_value[VERT], max_data_value[VERT]) + if not self.bounds[NORM]: + self.bounds[NORM] = (min_data_value[NORM], max_data_value[NORM]) + + def calc_all_extents(self): + self.calc_extents(HORZ) + self.calc_extents(VERT) + + self.plot_height = self.dimensions[VERT] - 2 * self.borders[VERT] + self.plot_width = self.dimensions[HORZ] - 2* self.borders[HORZ] + + self.plot_top = self.dimensions[VERT] - self.borders[VERT] + + def calc_steps(self): + #Calculates all the x, y, z and color steps + series_amplitude = [self.bounds[index][1] - self.bounds[index][0] for index in range(3)] + + if series_amplitude[HORZ]: + self.horizontal_step = float (self.plot_width) / series_amplitude[HORZ] + else: + self.horizontal_step = 0.00 + + if series_amplitude[VERT]: + self.vertical_step = float (self.plot_height) / series_amplitude[VERT] + else: + self.vertical_step = 0.00 + + if series_amplitude[NORM]: + if self.variable_radius: + self.z_step = float (self.bounds[NORM][1]) / series_amplitude[NORM] + if self.circle_colors: + self.circle_color_step = tuple([float(self.circle_colors[1][i]-self.circle_colors[0][i])/series_amplitude[NORM] for i in range(4)]) + else: + self.z_step = 0.00 + self.circle_color_step = ( 0.0, 0.0, 0.0, 0.0 ) + + def get_circle_color(self, value): + return tuple( [self.circle_colors[0][i] + value*self.circle_color_step[i] for i in range(4)] ) + + def render(self): + self.calc_all_extents() + self.calc_steps() + self.render_background() + self.render_bounding_box() + if self.axis: + self.render_axis() + if self.grid: + self.render_grid() + self.render_labels() + self.render_plot() + if self.errors: + self.render_errors() + if self.series_legend and self.series_labels: + self.render_legend() + + def render_axis(self): + #Draws both the axis lines and their titles + cr = self.context + cr.set_source_rgba(*self.line_color) + cr.move_to(self.borders[HORZ], self.dimensions[VERT] - self.borders[VERT]) + cr.line_to(self.borders[HORZ], self.borders[VERT]) + cr.stroke() + + cr.move_to(self.borders[HORZ], self.dimensions[VERT] - self.borders[VERT]) + cr.line_to(self.dimensions[HORZ] - self.borders[HORZ], self.dimensions[VERT] - self.borders[VERT]) + cr.stroke() + + cr.set_source_rgba(*self.label_color) + self.context.set_font_size( 1.2 * self.font_size ) + if self.titles[HORZ]: + title_width,title_height = cr.text_extents(self.titles[HORZ])[2:4] + cr.move_to( self.dimensions[HORZ]/2 - title_width/2, self.borders[VERT] - title_height/2 ) + cr.show_text( self.titles[HORZ] ) + + if self.titles[VERT]: + title_width,title_height = cr.text_extents(self.titles[VERT])[2:4] + cr.move_to( self.dimensions[HORZ] - self.borders[HORZ] + title_height/2, self.dimensions[VERT]/2 - title_width/2) + cr.save() + cr.rotate( math.pi/2 ) + cr.show_text( self.titles[VERT] ) + cr.restore() + + def render_grid(self): + cr = self.context + horizontal_step = float( self.plot_height ) / ( len( self.labels[VERT] ) - 1 ) + vertical_step = float( self.plot_width ) / ( len( self.labels[HORZ] ) - 1 ) + + x = self.borders[HORZ] + vertical_step + y = self.plot_top - horizontal_step + + for label in self.labels[HORZ][:-1]: + cr.set_source_rgba(*self.grid_color) + cr.move_to(x, self.dimensions[VERT] - self.borders[VERT]) + cr.line_to(x, self.borders[VERT]) + cr.stroke() + x += vertical_step + for label in self.labels[VERT][:-1]: + cr.set_source_rgba(*self.grid_color) + cr.move_to(self.borders[HORZ], y) + cr.line_to(self.dimensions[HORZ] - self.borders[HORZ], y) + cr.stroke() + y -= horizontal_step + + def render_labels(self): + self.context.set_font_size(self.font_size * 0.8) + self.render_horz_labels() + self.render_vert_labels() + + def render_horz_labels(self): + cr = self.context + step = float( self.plot_width ) / ( len( self.labels[HORZ] ) - 1 ) + x = self.borders[HORZ] + y = self.dimensions[VERT] - self.borders[VERT] + 5 + + # store rotation matrix from the initial state + rotation_matrix = cr.get_matrix() + rotation_matrix.rotate(self.x_label_angle) + + cr.set_source_rgba(*self.label_color) + + for item in self.labels[HORZ]: + width = cr.text_extents(item)[2] + cr.move_to(x, y) + cr.save() + cr.set_matrix(rotation_matrix) + cr.show_text(item) + cr.restore() + x += step + + def render_vert_labels(self): + cr = self.context + step = ( self.plot_height ) / ( len( self.labels[VERT] ) - 1 ) + y = self.plot_top + cr.set_source_rgba(*self.label_color) + for item in self.labels[VERT]: + width = cr.text_extents(item)[2] + cr.move_to(self.borders[HORZ] - width - 5,y) + cr.show_text(item) + y -= step + + def render_legend(self): + cr = self.context + cr.set_font_size(self.font_size) + cr.set_line_width(self.line_width) + + widest_word = max(self.series_labels, key = lambda item: self.context.text_extents(item)[2]) + tallest_word = max(self.series_labels, key = lambda item: self.context.text_extents(item)[3]) + max_width = self.context.text_extents(widest_word)[2] + max_height = self.context.text_extents(tallest_word)[3] * 1.1 + + color_box_height = max_height / 2 + color_box_width = color_box_height * 2 + + #Draw a bounding box + bounding_box_width = max_width + color_box_width + 15 + bounding_box_height = (len(self.series_labels)+0.5) * max_height + cr.set_source_rgba(1,1,1) + cr.rectangle(self.dimensions[HORZ] - self.borders[HORZ] - bounding_box_width, self.borders[VERT], + bounding_box_width, bounding_box_height) + cr.fill() + + cr.set_source_rgba(*self.line_color) + cr.set_line_width(self.line_width) + cr.rectangle(self.dimensions[HORZ] - self.borders[HORZ] - bounding_box_width, self.borders[VERT], + bounding_box_width, bounding_box_height) + cr.stroke() + + for idx,key in enumerate(self.series_labels): + #Draw color box + cr.set_source_rgba(*self.series_colors[idx][:4]) + cr.rectangle(self.dimensions[HORZ] - self.borders[HORZ] - max_width - color_box_width - 10, + self.borders[VERT] + color_box_height + (idx*max_height) , + color_box_width, color_box_height) + cr.fill() + + cr.set_source_rgba(0, 0, 0) + cr.rectangle(self.dimensions[HORZ] - self.borders[HORZ] - max_width - color_box_width - 10, + self.borders[VERT] + color_box_height + (idx*max_height), + color_box_width, color_box_height) + cr.stroke() + + #Draw series labels + cr.set_source_rgba(0, 0, 0) + cr.move_to(self.dimensions[HORZ] - self.borders[HORZ] - max_width - 5, self.borders[VERT] + ((idx+1)*max_height)) + cr.show_text(key) + + def render_errors(self): + cr = self.context + cr.rectangle(self.borders[HORZ], self.borders[VERT], self.plot_width, self.plot_height) + cr.clip() + radius = self.dots + x0 = self.borders[HORZ] - self.bounds[HORZ][0]*self.horizontal_step + y0 = self.borders[VERT] - self.bounds[VERT][0]*self.vertical_step + for index, group in enumerate(self.series): + cr.set_source_rgba(*self.series_colors[index][:4]) + for number, data in enumerate(group): + x = x0 + self.horizontal_step * data.content[0] + y = self.dimensions[VERT] - y0 - self.vertical_step * data.content[1] + if self.errors[HORZ]: + cr.move_to(x, y) + x1 = x - self.horizontal_step * self.errors[HORZ][0][number] + cr.line_to(x1, y) + cr.line_to(x1, y - radius) + cr.line_to(x1, y + radius) + cr.stroke() + if self.errors[HORZ] and len(self.errors[HORZ]) == 2: + cr.move_to(x, y) + x1 = x + self.horizontal_step * self.errors[HORZ][1][number] + cr.line_to(x1, y) + cr.line_to(x1, y - radius) + cr.line_to(x1, y + radius) + cr.stroke() + if self.errors[VERT]: + cr.move_to(x, y) + y1 = y + self.vertical_step * self.errors[VERT][0][number] + cr.line_to(x, y1) + cr.line_to(x - radius, y1) + cr.line_to(x + radius, y1) + cr.stroke() + if self.errors[VERT] and len(self.errors[VERT]) == 2: + cr.move_to(x, y) + y1 = y - self.vertical_step * self.errors[VERT][1][number] + cr.line_to(x, y1) + cr.line_to(x - radius, y1) + cr.line_to(x + radius, y1) + cr.stroke() + + + def render_plot(self): + cr = self.context + if self.discrete: + cr.rectangle(self.borders[HORZ], self.borders[VERT], self.plot_width, self.plot_height) + cr.clip() + x0 = self.borders[HORZ] - self.bounds[HORZ][0]*self.horizontal_step + y0 = self.borders[VERT] - self.bounds[VERT][0]*self.vertical_step + radius = self.dots + for number, group in enumerate (self.series): + cr.set_source_rgba(*self.series_colors[number][:4]) + for data in group : + if self.variable_radius: + radius = data.content[2]*self.z_step + if self.circle_colors: + cr.set_source_rgba( *self.get_circle_color( data.content[2]) ) + x = x0 + self.horizontal_step*data.content[0] + y = y0 + self.vertical_step*data.content[1] + cr.arc(x, self.dimensions[VERT] - y, radius, 0, 2*math.pi) + cr.fill() + else: + cr.rectangle(self.borders[HORZ], self.borders[VERT], self.plot_width, self.plot_height) + cr.clip() + x0 = self.borders[HORZ] - self.bounds[HORZ][0]*self.horizontal_step + y0 = self.borders[VERT] - self.bounds[VERT][0]*self.vertical_step + radius = self.dots + for number, group in enumerate (self.series): + last_data = None + cr.set_source_rgba(*self.series_colors[number][:4]) + for data in group : + x = x0 + self.horizontal_step*data.content[0] + y = y0 + self.vertical_step*data.content[1] + if self.dots: + if self.variable_radius: + radius = data.content[2]*self.z_step + cr.arc(x, self.dimensions[VERT] - y, radius, 0, 2*math.pi) + cr.fill() + if last_data : + old_x = x0 + self.horizontal_step*last_data.content[0] + old_y = y0 + self.vertical_step*last_data.content[1] + cr.move_to( old_x, self.dimensions[VERT] - old_y ) + cr.line_to( x, self.dimensions[VERT] - y) + cr.set_line_width(self.series_widths[number]) + + # Display line as dash line + if self.dash and self.dash[number]: + s = self.series_widths[number] + cr.set_dash([s*3, s*3], 0) + + cr.stroke() + cr.set_dash([]) + last_data = data + +class DotLinePlot(ScatterPlot): + def __init__(self, + surface=None, + data=None, + width=640, + height=480, + background=None, + border=0, + axis = False, + dash = False, + dots = 0, + grid = False, + series_legend = False, + x_labels = None, + y_labels = None, + x_bounds = None, + y_bounds = None, + x_title = None, + y_title = None, + series_colors = None): + + ScatterPlot.__init__(self, surface, data, None, None, width, height, background, border, + axis, dash, False, dots, grid, series_legend, x_labels, y_labels, + x_bounds, y_bounds, None, x_title, y_title, series_colors, None ) + + + def load_series(self, data, x_labels = None, y_labels = None, series_colors=None): + Plot.load_series(self, data, x_labels, y_labels, series_colors) + for group in self.series : + for index,data in enumerate(group): + group[index].content = (index, data.content) + + self.calc_boundaries() + self.calc_labels() + +class FunctionPlot(ScatterPlot): + def __init__(self, + surface=None, + data=None, + width=640, + height=480, + background=None, + border=0, + axis = False, + discrete = False, + dots = 0, + grid = False, + series_legend = False, + x_labels = None, + y_labels = None, + x_bounds = None, + y_bounds = None, + x_title = None, + y_title = None, + series_colors = None, + step = 1): + + self.function = data + self.step = step + self.discrete = discrete + + data, x_bounds = self.load_series_from_function( self.function, x_bounds ) + + ScatterPlot.__init__(self, surface, data, None, None, width, height, background, border, + axis, False, discrete, dots, grid, series_legend, x_labels, y_labels, + x_bounds, y_bounds, None, x_title, y_title, series_colors, None ) + + def load_series(self, data, x_labels = None, y_labels = None, series_colors=None): + Plot.load_series(self, data, x_labels, y_labels, series_colors) + + if len(self.series[0][0]) is 1: + for group_id, group in enumerate(self.series) : + for index,data in enumerate(group): + group[index].content = (self.bounds[HORZ][0] + self.step*index, data.content) + + self.calc_boundaries() + self.calc_labels() + + def load_series_from_function( self, function, x_bounds ): + #TODO: Add the possibility for the user to define multiple functions with different discretization parameters + + #This function converts a function, a list of functions or a dictionary + #of functions into its corresponding array of data + series = Series() + + if isinstance(function, Group) or isinstance(function, Data): + function = Series(function) + + # If is instance of Series + if isinstance(function, Series): + # Overwrite any bounds passed by the function + x_bounds = (function.range[0],function.range[-1]) + + #if no bounds are provided + if x_bounds == None: + x_bounds = (0,10) + + + #TODO: Finish the dict translation + if hasattr(function, "keys"): #dictionary: + for key in function.keys(): + group = Group(name=key) + #data[ key ] = [] + i = x_bounds[0] + while i <= x_bounds[1] : + group.add_data(function[ key ](i)) + #data[ key ].append( function[ key ](i) ) + i += self.step + series.add_group(group) + + elif hasattr(function, "__delitem__"): #list of functions + for index,f in enumerate( function ) : + group = Group() + #data.append( [] ) + i = x_bounds[0] + while i <= x_bounds[1] : + group.add_data(f(i)) + #data[ index ].append( f(i) ) + i += self.step + series.add_group(group) + + elif isinstance(function, Series): # instance of Series + series = function + + else: #function + group = Group() + i = x_bounds[0] + while i <= x_bounds[1] : + group.add_data(function(i)) + i += self.step + series.add_group(group) + + + return series, x_bounds + + def calc_labels(self): + if not self.labels[HORZ]: + self.labels[HORZ] = [] + i = self.bounds[HORZ][0] + while i<=self.bounds[HORZ][1]: + self.labels[HORZ].append(str(i)) + i += float(self.bounds[HORZ][1] - self.bounds[HORZ][0])/10 + ScatterPlot.calc_labels(self) + + def render_plot(self): + if not self.discrete: + ScatterPlot.render_plot(self) + else: + last = None + cr = self.context + for number, group in enumerate (self.series): + cr.set_source_rgba(*self.series_colors[number][:4]) + x0 = self.borders[HORZ] - self.bounds[HORZ][0]*self.horizontal_step + y0 = self.borders[VERT] - self.bounds[VERT][0]*self.vertical_step + for data in group: + x = x0 + self.horizontal_step * data.content[0] + y = y0 + self.vertical_step * data.content[1] + cr.move_to(x, self.dimensions[VERT] - y) + cr.line_to(x, self.plot_top) + cr.set_line_width(self.series_widths[number]) + cr.stroke() + if self.dots: + cr.new_path() + cr.arc(x, self.dimensions[VERT] - y, 3, 0, 2.1 * math.pi) + cr.close_path() + cr.fill() + +class BarPlot(Plot): + def __init__(self, + surface = None, + data = None, + width = 640, + height = 480, + background = "white light_gray", + border = 0, + display_values = False, + grid = False, + rounded_corners = False, + stack = False, + three_dimension = False, + x_labels = None, + y_labels = None, + x_bounds = None, + y_bounds = None, + series_colors = None, + main_dir = None): + + self.bounds = {} + self.bounds[HORZ] = x_bounds + self.bounds[VERT] = y_bounds + self.display_values = display_values + self.grid = grid + self.rounded_corners = rounded_corners + self.stack = stack + self.three_dimension = three_dimension + self.x_label_angle = math.pi / 2.5 + self.main_dir = main_dir + self.max_value = {} + self.plot_dimensions = {} + self.steps = {} + self.value_label_color = (0.5,0.5,0.5,1.0) + + Plot.__init__(self, surface, data, width, height, background, border, x_labels, y_labels, series_colors) + + def load_series(self, data, x_labels = None, y_labels = None, series_colors = None): + Plot.load_series(self, data, x_labels, y_labels, series_colors) + self.calc_boundaries() + + def process_colors(self, series_colors): + #Data for a BarPlot might be a List or a List of Lists. + #On the first case, colors must be generated for all bars, + #On the second, colors must be generated for each of the inner lists. + + #TODO: Didn't get it... + #if hasattr(self.data[0], '__getitem__'): + # length = max(len(series) for series in self.data) + #else: + # length = len( self.data ) + + length = max(len(group) for group in self.series) + + Plot.process_colors( self, series_colors, length, 'linear') + + def calc_boundaries(self): + if not self.bounds[self.main_dir]: + if self.stack: + max_data_value = max(sum(group.to_list()) for group in self.series) + else: + max_data_value = max(max(group.to_list()) for group in self.series) + self.bounds[self.main_dir] = (0, max_data_value) + if not self.bounds[other_direction(self.main_dir)]: + self.bounds[other_direction(self.main_dir)] = (0, len(self.series)) + + def calc_extents(self, direction): + self.max_value[direction] = 0 + if self.labels[direction]: + widest_word = max(self.labels[direction], key = lambda item: self.context.text_extents(item)[2]) + self.max_value[direction] = self.context.text_extents(widest_word)[3 - direction] + self.borders[other_direction(direction)] = (2-direction)*self.max_value[direction] + self.border + direction*(5) + else: + self.borders[other_direction(direction)] = self.border + + def calc_horz_extents(self): + self.calc_extents(HORZ) + + def calc_vert_extents(self): + self.calc_extents(VERT) + + def calc_all_extents(self): + self.calc_horz_extents() + self.calc_vert_extents() + other_dir = other_direction(self.main_dir) + self.value_label = 0 + if self.display_values: + if self.stack: + self.value_label = self.context.text_extents(str(max(sum(group.to_list()) for group in self.series)))[2 + self.main_dir] + else: + self.value_label = self.context.text_extents(str(max(max(group.to_list()) for group in self.series)))[2 + self.main_dir] + if self.labels[self.main_dir]: + self.plot_dimensions[self.main_dir] = self.dimensions[self.main_dir] - 2*self.borders[self.main_dir] - self.value_label + else: + self.plot_dimensions[self.main_dir] = self.dimensions[self.main_dir] - self.borders[self.main_dir] - 1.2*self.border - self.value_label + self.plot_dimensions[other_dir] = self.dimensions[other_dir] - self.borders[other_dir] - self.border + self.plot_top = self.dimensions[VERT] - self.borders[VERT] + + def calc_steps(self): + other_dir = other_direction(self.main_dir) + self.series_amplitude = self.bounds[self.main_dir][1] - self.bounds[self.main_dir][0] + if self.series_amplitude: + self.steps[self.main_dir] = float(self.plot_dimensions[self.main_dir])/self.series_amplitude + else: + self.steps[self.main_dir] = 0.00 + series_length = len(self.series) + self.steps[other_dir] = float(self.plot_dimensions[other_dir])/(series_length + 0.1*(series_length + 1)) + self.space = 0.1*self.steps[other_dir] + + def render(self): + self.calc_all_extents() + self.calc_steps() + self.render_background() + self.render_bounding_box() + if self.grid: + self.render_grid() + if self.three_dimension: + self.render_ground() + if self.display_values: + self.render_values() + self.render_labels() + self.render_plot() + if self.series_labels: + self.render_legend() + + def draw_3d_rectangle_front(self, x0, y0, x1, y1, shift): + self.context.rectangle(x0-shift, y0+shift, x1-x0, y1-y0) + + def draw_3d_rectangle_side(self, x0, y0, x1, y1, shift): + self.context.move_to(x1-shift,y0+shift) + self.context.line_to(x1, y0) + self.context.line_to(x1, y1) + self.context.line_to(x1-shift, y1+shift) + self.context.line_to(x1-shift, y0+shift) + self.context.close_path() + + def draw_3d_rectangle_top(self, x0, y0, x1, y1, shift): + self.context.move_to(x0-shift,y0+shift) + self.context.line_to(x0, y0) + self.context.line_to(x1, y0) + self.context.line_to(x1-shift, y0+shift) + self.context.line_to(x0-shift, y0+shift) + self.context.close_path() + + def draw_round_rectangle(self, x0, y0, x1, y1): + self.context.arc(x0+5, y0+5, 5, -math.pi, -math.pi/2) + self.context.line_to(x1-5, y0) + self.context.arc(x1-5, y0+5, 5, -math.pi/2, 0) + self.context.line_to(x1, y1-5) + self.context.arc(x1-5, y1-5, 5, 0, math.pi/2) + self.context.line_to(x0+5, y1) + self.context.arc(x0+5, y1-5, 5, math.pi/2, math.pi) + self.context.line_to(x0, y0+5) + self.context.close_path() + + def render_ground(self): + self.draw_3d_rectangle_front(self.borders[HORZ], self.dimensions[VERT] - self.borders[VERT], + self.dimensions[HORZ] - self.borders[HORZ], self.dimensions[VERT] - self.borders[VERT] + 5, 10) + self.context.fill() + + self.draw_3d_rectangle_side (self.borders[HORZ], self.dimensions[VERT] - self.borders[VERT], + self.dimensions[HORZ] - self.borders[HORZ], self.dimensions[VERT] - self.borders[VERT] + 5, 10) + self.context.fill() + + self.draw_3d_rectangle_top (self.borders[HORZ], self.dimensions[VERT] - self.borders[VERT], + self.dimensions[HORZ] - self.borders[HORZ], self.dimensions[VERT] - self.borders[VERT] + 5, 10) + self.context.fill() + + def render_labels(self): + self.context.set_font_size(self.font_size * 0.8) + if self.labels[HORZ]: + self.render_horz_labels() + if self.labels[VERT]: + self.render_vert_labels() + + def render_legend(self): + cr = self.context + cr.set_font_size(self.font_size) + cr.set_line_width(self.line_width) + + widest_word = max(self.series_labels, key = lambda item: self.context.text_extents(item)[2]) + tallest_word = max(self.series_labels, key = lambda item: self.context.text_extents(item)[3]) + max_width = self.context.text_extents(widest_word)[2] + max_height = self.context.text_extents(tallest_word)[3] * 1.1 + 5 + + color_box_height = max_height / 2 + color_box_width = color_box_height * 2 + + #Draw a bounding box + bounding_box_width = max_width + color_box_width + 15 + bounding_box_height = (len(self.series_labels)+0.5) * max_height + cr.set_source_rgba(1,1,1) + cr.rectangle(self.dimensions[HORZ] - self.border - bounding_box_width, self.border, + bounding_box_width, bounding_box_height) + cr.fill() + + cr.set_source_rgba(*self.line_color) + cr.set_line_width(self.line_width) + cr.rectangle(self.dimensions[HORZ] - self.border - bounding_box_width, self.border, + bounding_box_width, bounding_box_height) + cr.stroke() + + for idx,key in enumerate(self.series_labels): + #Draw color box + cr.set_source_rgba(*self.series_colors[idx][:4]) + cr.rectangle(self.dimensions[HORZ] - self.border - max_width - color_box_width - 10, + self.border + color_box_height + (idx*max_height) , + color_box_width, color_box_height) + cr.fill() + + cr.set_source_rgba(0, 0, 0) + cr.rectangle(self.dimensions[HORZ] - self.border - max_width - color_box_width - 10, + self.border + color_box_height + (idx*max_height), + color_box_width, color_box_height) + cr.stroke() + + #Draw series labels + cr.set_source_rgba(0, 0, 0) + cr.move_to(self.dimensions[HORZ] - self.border - max_width - 5, self.border + ((idx+1)*max_height)) + cr.show_text(key) + + +class HorizontalBarPlot(BarPlot): + def __init__(self, + surface = None, + data = None, + width = 640, + height = 480, + background = "white light_gray", + border = 0, + display_values = False, + grid = False, + rounded_corners = False, + stack = False, + three_dimension = False, + series_labels = None, + x_labels = None, + y_labels = None, + x_bounds = None, + y_bounds = None, + series_colors = None): + + BarPlot.__init__(self, surface, data, width, height, background, border, + display_values, grid, rounded_corners, stack, three_dimension, + x_labels, y_labels, x_bounds, y_bounds, series_colors, HORZ) + self.series_labels = series_labels + + def calc_vert_extents(self): + self.calc_extents(VERT) + if self.labels[HORZ] and not self.labels[VERT]: + self.borders[HORZ] += 10 + + def draw_rectangle_bottom(self, x0, y0, x1, y1): + self.context.arc(x0+5, y1-5, 5, math.pi/2, math.pi) + self.context.line_to(x0, y0+5) + self.context.arc(x0+5, y0+5, 5, -math.pi, -math.pi/2) + self.context.line_to(x1, y0) + self.context.line_to(x1, y1) + self.context.line_to(x0+5, y1) + self.context.close_path() + + def draw_rectangle_top(self, x0, y0, x1, y1): + self.context.arc(x1-5, y0+5, 5, -math.pi/2, 0) + self.context.line_to(x1, y1-5) + self.context.arc(x1-5, y1-5, 5, 0, math.pi/2) + self.context.line_to(x0, y1) + self.context.line_to(x0, y0) + self.context.line_to(x1, y0) + self.context.close_path() + + def draw_rectangle(self, index, length, x0, y0, x1, y1): + if length == 1: + BarPlot.draw_rectangle(self, x0, y0, x1, y1) + elif index == 0: + self.draw_rectangle_bottom(x0, y0, x1, y1) + elif index == length-1: + self.draw_rectangle_top(x0, y0, x1, y1) + else: + self.context.rectangle(x0, y0, x1-x0, y1-y0) + + #TODO: Review BarPlot.render_grid code + def render_grid(self): + self.context.set_source_rgba(0.8, 0.8, 0.8) + if self.labels[HORZ]: + self.context.set_font_size(self.font_size * 0.8) + step = (self.dimensions[HORZ] - 2*self.borders[HORZ] - self.value_label)/(len(self.labels[HORZ])-1) + x = self.borders[HORZ] + next_x = 0 + for item in self.labels[HORZ]: + width = self.context.text_extents(item)[2] + if x - width/2 > next_x and x - width/2 > self.border: + self.context.move_to(x, self.border) + self.context.line_to(x, self.dimensions[VERT] - self.borders[VERT]) + self.context.stroke() + next_x = x + width/2 + x += step + else: + lines = 11 + horizontal_step = float(self.plot_dimensions[HORZ])/(lines-1) + x = self.borders[HORZ] + for y in xrange(0, lines): + self.context.move_to(x, self.border) + self.context.line_to(x, self.dimensions[VERT] - self.borders[VERT]) + self.context.stroke() + x += horizontal_step + + def render_horz_labels(self): + step = (self.dimensions[HORZ] - 2*self.borders[HORZ])/(len(self.labels[HORZ])-1) + x = self.borders[HORZ] + next_x = 0 + + for item in self.labels[HORZ]: + self.context.set_source_rgba(*self.label_color) + width = self.context.text_extents(item)[2] + if x - width/2 > next_x and x - width/2 > self.border: + self.context.move_to(x - width/2, self.dimensions[VERT] - self.borders[VERT] + self.max_value[HORZ] + 3) + self.context.show_text(item) + next_x = x + width/2 + x += step + + def render_vert_labels(self): + series_length = len(self.labels[VERT]) + step = (self.plot_dimensions[VERT] - (series_length + 1)*self.space)/(len(self.labels[VERT])) + y = self.border + step/2 + self.space + + for item in self.labels[VERT]: + self.context.set_source_rgba(*self.label_color) + width, height = self.context.text_extents(item)[2:4] + self.context.move_to(self.borders[HORZ] - width - 5, y + height/2) + self.context.show_text(item) + y += step + self.space + self.labels[VERT].reverse() + + def render_values(self): + self.context.set_source_rgba(*self.value_label_color) + self.context.set_font_size(self.font_size * 0.8) + if self.stack: + for i,group in enumerate(self.series): + value = sum(group.to_list()) + height = self.context.text_extents(str(value))[3] + x = self.borders[HORZ] + value*self.steps[HORZ] + 2 + y = self.borders[VERT] + (i+0.5)*self.steps[VERT] + (i+1)*self.space + height/2 + self.context.move_to(x, y) + self.context.show_text(str(value)) + else: + for i,group in enumerate(self.series): + inner_step = self.steps[VERT]/len(group) + y0 = self.border + i*self.steps[VERT] + (i+1)*self.space + for number,data in enumerate(group): + height = self.context.text_extents(str(data.content))[3] + self.context.move_to(self.borders[HORZ] + data.content*self.steps[HORZ] + 2, y0 + 0.5*inner_step + height/2, ) + self.context.show_text(str(data.content)) + y0 += inner_step + + def render_plot(self): + if self.stack: + for i,group in enumerate(self.series): + x0 = self.borders[HORZ] + y0 = self.borders[VERT] + i*self.steps[VERT] + (i+1)*self.space + for number,data in enumerate(group): + if self.series_colors[number][4] in ('radial','linear') : + linear = cairo.LinearGradient( data.content*self.steps[HORZ]/2, y0, data.content*self.steps[HORZ]/2, y0 + self.steps[VERT] ) + color = self.series_colors[number] + linear.add_color_stop_rgba(0.0, 3.5*color[0]/5.0, 3.5*color[1]/5.0, 3.5*color[2]/5.0,1.0) + linear.add_color_stop_rgba(1.0, *color[:4]) + self.context.set_source(linear) + elif self.series_colors[number][4] == 'solid': + self.context.set_source_rgba(*self.series_colors[number][:4]) + if self.rounded_corners: + self.draw_rectangle(number, len(group), x0, y0, x0+data.content*self.steps[HORZ], y0+self.steps[VERT]) + self.context.fill() + else: + self.context.rectangle(x0, y0, data.content*self.steps[HORZ], self.steps[VERT]) + self.context.fill() + x0 += data.content*self.steps[HORZ] + else: + for i,group in enumerate(self.series): + inner_step = self.steps[VERT]/len(group) + x0 = self.borders[HORZ] + y0 = self.border + i*self.steps[VERT] + (i+1)*self.space + for number,data in enumerate(group): + linear = cairo.LinearGradient(data.content*self.steps[HORZ]/2, y0, data.content*self.steps[HORZ]/2, y0 + inner_step) + color = self.series_colors[number] + linear.add_color_stop_rgba(0.0, 3.5*color[0]/5.0, 3.5*color[1]/5.0, 3.5*color[2]/5.0,1.0) + linear.add_color_stop_rgba(1.0, *color[:4]) + self.context.set_source(linear) + if self.rounded_corners and data.content != 0: + BarPlot.draw_round_rectangle(self,x0, y0, x0 + data.content*self.steps[HORZ], y0 + inner_step) + self.context.fill() + else: + self.context.rectangle(x0, y0, data.content*self.steps[HORZ], inner_step) + self.context.fill() + y0 += inner_step + +class VerticalBarPlot(BarPlot): + def __init__(self, + surface = None, + data = None, + width = 640, + height = 480, + background = "white light_gray", + border = 0, + display_values = False, + grid = False, + rounded_corners = False, + stack = False, + three_dimension = False, + series_labels = None, + x_labels = None, + y_labels = None, + x_bounds = None, + y_bounds = None, + series_colors = None): + + BarPlot.__init__(self, surface, data, width, height, background, border, + display_values, grid, rounded_corners, stack, three_dimension, + x_labels, y_labels, x_bounds, y_bounds, series_colors, VERT) + self.series_labels = series_labels + + def calc_vert_extents(self): + self.calc_extents(VERT) + if self.labels[VERT] and not self.labels[HORZ]: + self.borders[VERT] += 10 + + def draw_rectangle_bottom(self, x0, y0, x1, y1): + self.context.move_to(x1,y1) + self.context.arc(x1-5, y1-5, 5, 0, math.pi/2) + self.context.line_to(x0+5, y1) + self.context.arc(x0+5, y1-5, 5, math.pi/2, math.pi) + self.context.line_to(x0, y0) + self.context.line_to(x1, y0) + self.context.line_to(x1, y1) + self.context.close_path() + + def draw_rectangle_top(self, x0, y0, x1, y1): + self.context.arc(x0+5, y0+5, 5, -math.pi, -math.pi/2) + self.context.line_to(x1-5, y0) + self.context.arc(x1-5, y0+5, 5, -math.pi/2, 0) + self.context.line_to(x1, y1) + self.context.line_to(x0, y1) + self.context.line_to(x0, y0) + self.context.close_path() + + def draw_rectangle(self, index, length, x0, y0, x1, y1): + if length == 1: + BarPlot.draw_rectangle(self, x0, y0, x1, y1) + elif index == 0: + self.draw_rectangle_bottom(x0, y0, x1, y1) + elif index == length-1: + self.draw_rectangle_top(x0, y0, x1, y1) + else: + self.context.rectangle(x0, y0, x1-x0, y1-y0) + + def render_grid(self): + self.context.set_source_rgba(0.8, 0.8, 0.8) + if self.labels[VERT]: + lines = len(self.labels[VERT]) + vertical_step = float(self.plot_dimensions[self.main_dir])/(lines-1) + y = self.borders[VERT] + self.value_label + else: + lines = 11 + vertical_step = float(self.plot_dimensions[self.main_dir])/(lines-1) + y = 1.2*self.border + self.value_label + for x in xrange(0, lines): + self.context.move_to(self.borders[HORZ], y) + self.context.line_to(self.dimensions[HORZ] - self.border, y) + self.context.stroke() + y += vertical_step + + def render_ground(self): + self.draw_3d_rectangle_front(self.borders[HORZ], self.dimensions[VERT] - self.borders[VERT], + self.dimensions[HORZ] - self.borders[HORZ], self.dimensions[VERT] - self.borders[VERT] + 5, 10) + self.context.fill() + + self.draw_3d_rectangle_side (self.borders[HORZ], self.dimensions[VERT] - self.borders[VERT], + self.dimensions[HORZ] - self.borders[HORZ], self.dimensions[VERT] - self.borders[VERT] + 5, 10) + self.context.fill() + + self.draw_3d_rectangle_top (self.borders[HORZ], self.dimensions[VERT] - self.borders[VERT], + self.dimensions[HORZ] - self.borders[HORZ], self.dimensions[VERT] - self.borders[VERT] + 5, 10) + self.context.fill() + + def render_horz_labels(self): + series_length = len(self.labels[HORZ]) + step = float (self.plot_dimensions[HORZ] - (series_length + 1)*self.space)/len(self.labels[HORZ]) + x = self.borders[HORZ] + step/2 + self.space + next_x = 0 + + for item in self.labels[HORZ]: + self.context.set_source_rgba(*self.label_color) + width = self.context.text_extents(item)[2] + if x - width/2 > next_x and x - width/2 > self.borders[HORZ]: + self.context.move_to(x - width/2, self.dimensions[VERT] - self.borders[VERT] + self.max_value[HORZ] + 3) + self.context.show_text(item) + next_x = x + width/2 + x += step + self.space + + def render_vert_labels(self): + self.context.set_source_rgba(*self.label_color) + y = self.borders[VERT] + self.value_label + step = (self.dimensions[VERT] - 2*self.borders[VERT] - self.value_label)/(len(self.labels[VERT]) - 1) + self.labels[VERT].reverse() + for item in self.labels[VERT]: + width, height = self.context.text_extents(item)[2:4] + self.context.move_to(self.borders[HORZ] - width - 5, y + height/2) + self.context.show_text(item) + y += step + self.labels[VERT].reverse() + + def render_values(self): + self.context.set_source_rgba(*self.value_label_color) + self.context.set_font_size(self.font_size * 0.8) + if self.stack: + for i,group in enumerate(self.series): + value = sum(group.to_list()) + width = self.context.text_extents(str(value))[2] + x = self.borders[HORZ] + (i+0.5)*self.steps[HORZ] + (i+1)*self.space - width/2 + y = value*self.steps[VERT] + 2 + self.context.move_to(x, self.plot_top-y) + self.context.show_text(str(value)) + else: + for i,group in enumerate(self.series): + inner_step = self.steps[HORZ]/len(group) + x0 = self.borders[HORZ] + i*self.steps[HORZ] + (i+1)*self.space + for number,data in enumerate(group): + width = self.context.text_extents(str(data.content))[2] + self.context.move_to(x0 + 0.5*inner_step - width/2, self.plot_top - data.content*self.steps[VERT] - 2) + self.context.show_text(str(data.content)) + x0 += inner_step + + def render_plot(self): + if self.stack: + for i,group in enumerate(self.series): + x0 = self.borders[HORZ] + i*self.steps[HORZ] + (i+1)*self.space + y0 = 0 + for number,data in enumerate(group): + if self.series_colors[number][4] in ('linear','radial'): + linear = cairo.LinearGradient( x0, data.content*self.steps[VERT]/2, x0 + self.steps[HORZ], data.content*self.steps[VERT]/2 ) + color = self.series_colors[number] + linear.add_color_stop_rgba(0.0, 3.5*color[0]/5.0, 3.5*color[1]/5.0, 3.5*color[2]/5.0,1.0) + linear.add_color_stop_rgba(1.0, *color[:4]) + self.context.set_source(linear) + elif self.series_colors[number][4] == 'solid': + self.context.set_source_rgba(*self.series_colors[number][:4]) + if self.rounded_corners: + self.draw_rectangle(number, len(group), x0, self.plot_top - y0 - data.content*self.steps[VERT], x0 + self.steps[HORZ], self.plot_top - y0) + self.context.fill() + else: + self.context.rectangle(x0, self.plot_top - y0 - data.content*self.steps[VERT], self.steps[HORZ], data.content*self.steps[VERT]) + self.context.fill() + y0 += data.content*self.steps[VERT] + else: + for i,group in enumerate(self.series): + inner_step = self.steps[HORZ]/len(group) + y0 = self.borders[VERT] + x0 = self.borders[HORZ] + i*self.steps[HORZ] + (i+1)*self.space + for number,data in enumerate(group): + if self.series_colors[number][4] == 'linear': + linear = cairo.LinearGradient( x0, data.content*self.steps[VERT]/2, x0 + inner_step, data.content*self.steps[VERT]/2 ) + color = self.series_colors[number] + linear.add_color_stop_rgba(0.0, 3.5*color[0]/5.0, 3.5*color[1]/5.0, 3.5*color[2]/5.0,1.0) + linear.add_color_stop_rgba(1.0, *color[:4]) + self.context.set_source(linear) + elif self.series_colors[number][4] == 'solid': + self.context.set_source_rgba(*self.series_colors[number][:4]) + if self.rounded_corners and data.content != 0: + BarPlot.draw_round_rectangle(self, x0, self.plot_top - data.content*self.steps[VERT], x0+inner_step, self.plot_top) + self.context.fill() + elif self.three_dimension: + self.draw_3d_rectangle_front(x0, self.plot_top - data.content*self.steps[VERT], x0+inner_step, self.plot_top, 5) + self.context.fill() + self.draw_3d_rectangle_side(x0, self.plot_top - data.content*self.steps[VERT], x0+inner_step, self.plot_top, 5) + self.context.fill() + self.draw_3d_rectangle_top(x0, self.plot_top - data.content*self.steps[VERT], x0+inner_step, self.plot_top, 5) + self.context.fill() + else: + self.context.rectangle(x0, self.plot_top - data.content*self.steps[VERT], inner_step, data.content*self.steps[VERT]) + self.context.fill() + + x0 += inner_step + +class StreamChart(VerticalBarPlot): + def __init__(self, + surface = None, + data = None, + width = 640, + height = 480, + background = "white light_gray", + border = 0, + grid = False, + series_legend = None, + x_labels = None, + x_bounds = None, + y_bounds = None, + series_colors = None): + + VerticalBarPlot.__init__(self, surface, data, width, height, background, border, + False, grid, False, True, False, + None, x_labels, None, x_bounds, y_bounds, series_colors) + + def calc_steps(self): + other_dir = other_direction(self.main_dir) + self.series_amplitude = self.bounds[self.main_dir][1] - self.bounds[self.main_dir][0] + if self.series_amplitude: + self.steps[self.main_dir] = float(self.plot_dimensions[self.main_dir])/self.series_amplitude + else: + self.steps[self.main_dir] = 0.00 + series_length = len(self.data) + self.steps[other_dir] = float(self.plot_dimensions[other_dir])/series_length + + def render_legend(self): + pass + + def ground(self, index): + sum_values = sum(self.data[index]) + return -0.5*sum_values + + def calc_angles(self): + middle = self.plot_top - self.plot_dimensions[VERT]/2.0 + self.angles = [tuple([0.0 for x in range(len(self.data)+1)])] + for x_index in range(1, len(self.data)-1): + t = [] + x0 = self.borders[HORZ] + (0.5 + x_index - 1)*self.steps[HORZ] + x2 = self.borders[HORZ] + (0.5 + x_index + 1)*self.steps[HORZ] + y0 = middle - self.ground(x_index-1)*self.steps[VERT] + y2 = middle - self.ground(x_index+1)*self.steps[VERT] + t.append(math.atan(float(y0-y2)/(x0-x2))) + for data_index in range(len(self.data[x_index])): + x0 = self.borders[HORZ] + (0.5 + x_index - 1)*self.steps[HORZ] + x2 = self.borders[HORZ] + (0.5 + x_index + 1)*self.steps[HORZ] + y0 = middle - self.ground(x_index-1)*self.steps[VERT] - self.data[x_index-1][data_index]*self.steps[VERT] + y2 = middle - self.ground(x_index+1)*self.steps[VERT] - self.data[x_index+1][data_index]*self.steps[VERT] + + for i in range(0,data_index): + y0 -= self.data[x_index-1][i]*self.steps[VERT] + y2 -= self.data[x_index+1][i]*self.steps[VERT] + + if data_index == len(self.data[0])-1 and False: + self.context.set_source_rgba(0.0,0.0,0.0,0.3) + self.context.move_to(x0,y0) + self.context.line_to(x2,y2) + self.context.stroke() + self.context.arc(x0,y0,2,0,2*math.pi) + self.context.fill() + t.append(math.atan(float(y0-y2)/(x0-x2))) + self.angles.append(tuple(t)) + self.angles.append(tuple([0.0 for x in range(len(self.data)+1)])) + + def render_plot(self): + self.calc_angles() + middle = self.plot_top - self.plot_dimensions[VERT]/2.0 + p = 0.4*self.steps[HORZ] + for data_index in range(len(self.data[0])-1,-1,-1): + self.context.set_source_rgba(*self.series_colors[data_index][:4]) + + #draw the upper line + for x_index in range(len(self.data)-1) : + x1 = self.borders[HORZ] + (0.5 + x_index)*self.steps[HORZ] + y1 = middle - self.ground(x_index)*self.steps[VERT] - self.data[x_index][data_index]*self.steps[VERT] + x2 = self.borders[HORZ] + (0.5 + x_index + 1)*self.steps[HORZ] + y2 = middle - self.ground(x_index + 1)*self.steps[VERT] - self.data[x_index + 1][data_index]*self.steps[VERT] + + for i in range(0,data_index): + y1 -= self.data[x_index][i]*self.steps[VERT] + y2 -= self.data[x_index+1][i]*self.steps[VERT] + + if x_index == 0: + self.context.move_to(x1,y1) + + ang1 = self.angles[x_index][data_index+1] + ang2 = self.angles[x_index+1][data_index+1] + math.pi + self.context.curve_to(x1+p*math.cos(ang1),y1+p*math.sin(ang1), + x2+p*math.cos(ang2),y2+p*math.sin(ang2), + x2,y2) + + for x_index in range(len(self.data)-1,0,-1) : + x1 = self.borders[HORZ] + (0.5 + x_index)*self.steps[HORZ] + y1 = middle - self.ground(x_index)*self.steps[VERT] + x2 = self.borders[HORZ] + (0.5 + x_index - 1)*self.steps[HORZ] + y2 = middle - self.ground(x_index - 1)*self.steps[VERT] + + for i in range(0,data_index): + y1 -= self.data[x_index][i]*self.steps[VERT] + y2 -= self.data[x_index-1][i]*self.steps[VERT] + + if x_index == len(self.data)-1: + self.context.line_to(x1,y1+2) + + #revert angles by pi degrees to take the turn back + ang1 = self.angles[x_index][data_index] + math.pi + ang2 = self.angles[x_index-1][data_index] + self.context.curve_to(x1+p*math.cos(ang1),y1+p*math.sin(ang1), + x2+p*math.cos(ang2),y2+p*math.sin(ang2), + x2,y2+2) + + self.context.close_path() + self.context.fill() + + if False: + self.context.move_to(self.borders[HORZ] + 0.5*self.steps[HORZ], middle) + for x_index in range(len(self.data)-1) : + x1 = self.borders[HORZ] + (0.5 + x_index)*self.steps[HORZ] + y1 = middle - self.ground(x_index)*self.steps[VERT] - self.data[x_index][data_index]*self.steps[VERT] + x2 = self.borders[HORZ] + (0.5 + x_index + 1)*self.steps[HORZ] + y2 = middle - self.ground(x_index + 1)*self.steps[VERT] - self.data[x_index + 1][data_index]*self.steps[VERT] + + for i in range(0,data_index): + y1 -= self.data[x_index][i]*self.steps[VERT] + y2 -= self.data[x_index+1][i]*self.steps[VERT] + + ang1 = self.angles[x_index][data_index+1] + ang2 = self.angles[x_index+1][data_index+1] + math.pi + self.context.set_source_rgba(1.0,0.0,0.0) + self.context.arc(x1+p*math.cos(ang1),y1+p*math.sin(ang1),2,0,2*math.pi) + self.context.fill() + self.context.set_source_rgba(0.0,0.0,0.0) + self.context.arc(x2+p*math.cos(ang2),y2+p*math.sin(ang2),2,0,2*math.pi) + self.context.fill() + '''self.context.set_source_rgba(0.0,0.0,0.0,0.3) + self.context.arc(x2,y2,2,0,2*math.pi) + self.context.fill()''' + self.context.move_to(x1,y1) + self.context.line_to(x1+p*math.cos(ang1),y1+p*math.sin(ang1)) + self.context.stroke() + self.context.move_to(x2,y2) + self.context.line_to(x2+p*math.cos(ang2),y2+p*math.sin(ang2)) + self.context.stroke() + if False: + for x_index in range(len(self.data)-1,0,-1) : + x1 = self.borders[HORZ] + (0.5 + x_index)*self.steps[HORZ] + y1 = middle - self.ground(x_index)*self.steps[VERT] + x2 = self.borders[HORZ] + (0.5 + x_index - 1)*self.steps[HORZ] + y2 = middle - self.ground(x_index - 1)*self.steps[VERT] + + for i in range(0,data_index): + y1 -= self.data[x_index][i]*self.steps[VERT] + y2 -= self.data[x_index-1][i]*self.steps[VERT] + + #revert angles by pi degrees to take the turn back + ang1 = self.angles[x_index][data_index] + math.pi + ang2 = self.angles[x_index-1][data_index] + self.context.set_source_rgba(0.0,1.0,0.0) + self.context.arc(x1+p*math.cos(ang1),y1+p*math.sin(ang1),2,0,2*math.pi) + self.context.fill() + self.context.set_source_rgba(0.0,0.0,1.0) + self.context.arc(x2+p*math.cos(ang2),y2+p*math.sin(ang2),2,0,2*math.pi) + self.context.fill() + '''self.context.set_source_rgba(0.0,0.0,0.0,0.3) + self.context.arc(x2,y2,2,0,2*math.pi) + self.context.fill()''' + self.context.move_to(x1,y1) + self.context.line_to(x1+p*math.cos(ang1),y1+p*math.sin(ang1)) + self.context.stroke() + self.context.move_to(x2,y2) + self.context.line_to(x2+p*math.cos(ang2),y2+p*math.sin(ang2)) + self.context.stroke() + #break + + #self.context.arc(self.dimensions[HORZ]/2, self.dimensions[VERT]/2,50,0,3*math.pi/2) + #self.context.fill() + + +class PiePlot(Plot): + #TODO: Check the old cairoplot, graphs aren't matching + def __init__ (self, + surface = None, + data = None, + width = 640, + height = 480, + background = "white light_gray", + gradient = False, + shadow = False, + colors = None): + + Plot.__init__( self, surface, data, width, height, background, series_colors = colors ) + self.center = (self.dimensions[HORZ]/2, self.dimensions[VERT]/2) + self.total = sum( self.series.to_list() ) + self.radius = min(self.dimensions[HORZ]/3,self.dimensions[VERT]/3) + self.gradient = gradient + self.shadow = shadow + + def sort_function(x,y): + return x.content - y.content + + def load_series(self, data, x_labels=None, y_labels=None, series_colors=None): + Plot.load_series(self, data, x_labels, y_labels, series_colors) + # Already done inside series + #self.data = sorted(self.data) + + def draw_piece(self, angle, next_angle): + self.context.move_to(self.center[0],self.center[1]) + self.context.line_to(self.center[0] + self.radius*math.cos(angle), self.center[1] + self.radius*math.sin(angle)) + self.context.arc(self.center[0], self.center[1], self.radius, angle, next_angle) + self.context.line_to(self.center[0], self.center[1]) + self.context.close_path() + + def render(self): + self.render_background() + self.render_bounding_box() + if self.shadow: + self.render_shadow() + self.render_plot() + self.render_series_labels() + + def render_shadow(self): + horizontal_shift = 3 + vertical_shift = 3 + self.context.set_source_rgba(0, 0, 0, 0.5) + self.context.arc(self.center[0] + horizontal_shift, self.center[1] + vertical_shift, self.radius, 0, 2*math.pi) + self.context.fill() + + def render_series_labels(self): + angle = 0 + next_angle = 0 + x0,y0 = self.center + cr = self.context + for number,key in enumerate(self.series_labels): + # self.data[number] should be just a number + data = sum(self.series[number].to_list()) + + next_angle = angle + 2.0*math.pi*data/self.total + cr.set_source_rgba(*self.series_colors[number][:4]) + w = cr.text_extents(key)[2] + if (angle + next_angle)/2 < math.pi/2 or (angle + next_angle)/2 > 3*math.pi/2: + cr.move_to(x0 + (self.radius+10)*math.cos((angle+next_angle)/2), y0 + (self.radius+10)*math.sin((angle+next_angle)/2) ) + else: + cr.move_to(x0 + (self.radius+10)*math.cos((angle+next_angle)/2) - w, y0 + (self.radius+10)*math.sin((angle+next_angle)/2) ) + cr.show_text(key) + angle = next_angle + + def render_plot(self): + angle = 0 + next_angle = 0 + x0,y0 = self.center + cr = self.context + for number,group in enumerate(self.series): + # Group should be just a number + data = sum(group.to_list()) + next_angle = angle + 2.0*math.pi*data/self.total + if self.gradient or self.series_colors[number][4] in ('linear','radial'): + gradient_color = cairo.RadialGradient(self.center[0], self.center[1], 0, self.center[0], self.center[1], self.radius) + gradient_color.add_color_stop_rgba(0.3, *self.series_colors[number][:4]) + gradient_color.add_color_stop_rgba(1, self.series_colors[number][0]*0.7, + self.series_colors[number][1]*0.7, + self.series_colors[number][2]*0.7, + self.series_colors[number][3]) + cr.set_source(gradient_color) + else: + cr.set_source_rgba(*self.series_colors[number][:4]) + + self.draw_piece(angle, next_angle) + cr.fill() + + cr.set_source_rgba(1.0, 1.0, 1.0) + self.draw_piece(angle, next_angle) + cr.stroke() + + angle = next_angle + +class DonutPlot(PiePlot): + def __init__ (self, + surface = None, + data = None, + width = 640, + height = 480, + background = "white light_gray", + gradient = False, + shadow = False, + colors = None, + inner_radius=-1): + + Plot.__init__( self, surface, data, width, height, background, series_colors = colors ) + + self.center = ( self.dimensions[HORZ]/2, self.dimensions[VERT]/2 ) + self.total = sum( self.series.to_list() ) + self.radius = min( self.dimensions[HORZ]/3,self.dimensions[VERT]/3 ) + self.inner_radius = inner_radius*self.radius + + if inner_radius == -1: + self.inner_radius = self.radius/3 + + self.gradient = gradient + self.shadow = shadow + + def draw_piece(self, angle, next_angle): + self.context.move_to(self.center[0] + (self.inner_radius)*math.cos(angle), self.center[1] + (self.inner_radius)*math.sin(angle)) + self.context.line_to(self.center[0] + self.radius*math.cos(angle), self.center[1] + self.radius*math.sin(angle)) + self.context.arc(self.center[0], self.center[1], self.radius, angle, next_angle) + self.context.line_to(self.center[0] + (self.inner_radius)*math.cos(next_angle), self.center[1] + (self.inner_radius)*math.sin(next_angle)) + self.context.arc_negative(self.center[0], self.center[1], self.inner_radius, next_angle, angle) + self.context.close_path() + + def render_shadow(self): + horizontal_shift = 3 + vertical_shift = 3 + self.context.set_source_rgba(0, 0, 0, 0.5) + self.context.arc(self.center[0] + horizontal_shift, self.center[1] + vertical_shift, self.inner_radius, 0, 2*math.pi) + self.context.arc_negative(self.center[0] + horizontal_shift, self.center[1] + vertical_shift, self.radius, 0, -2*math.pi) + self.context.fill() + +class GanttChart (Plot) : + def __init__(self, + surface = None, + data = None, + width = 640, + height = 480, + x_labels = None, + y_labels = None, + colors = None): + self.bounds = {} + self.max_value = {} + Plot.__init__(self, surface, data, width, height, x_labels = x_labels, y_labels = y_labels, series_colors = colors) + + def load_series(self, data, x_labels=None, y_labels=None, series_colors=None): + Plot.load_series(self, data, x_labels, y_labels, series_colors) + self.calc_boundaries() + + def calc_boundaries(self): + self.bounds[HORZ] = (0,len(self.series)) + end_pos = max(self.series.to_list()) + + #for group in self.series: + # if hasattr(item, "__delitem__"): + # for sub_item in item: + # end_pos = max(sub_item) + # else: + # end_pos = max(item) + self.bounds[VERT] = (0,end_pos) + + def calc_extents(self, direction): + self.max_value[direction] = 0 + if self.labels[direction]: + self.max_value[direction] = max(self.context.text_extents(item)[2] for item in self.labels[direction]) + else: + self.max_value[direction] = self.context.text_extents( str(self.bounds[direction][1] + 1) )[2] + + def calc_horz_extents(self): + self.calc_extents(HORZ) + self.borders[HORZ] = 100 + self.max_value[HORZ] + + def calc_vert_extents(self): + self.calc_extents(VERT) + self.borders[VERT] = self.dimensions[VERT]/(self.bounds[HORZ][1] + 1) + + def calc_steps(self): + self.horizontal_step = (self.dimensions[HORZ] - self.borders[HORZ])/(len(self.labels[VERT])) + self.vertical_step = self.borders[VERT] + + def render(self): + self.calc_horz_extents() + self.calc_vert_extents() + self.calc_steps() + self.render_background() + + self.render_labels() + self.render_grid() + self.render_plot() + + def render_background(self): + cr = self.context + cr.set_source_rgba(255,255,255) + cr.rectangle(0,0,self.dimensions[HORZ], self.dimensions[VERT]) + cr.fill() + for number,group in enumerate(self.series): + linear = cairo.LinearGradient(self.dimensions[HORZ]/2, self.borders[VERT] + number*self.vertical_step, + self.dimensions[HORZ]/2, self.borders[VERT] + (number+1)*self.vertical_step) + linear.add_color_stop_rgba(0,1.0,1.0,1.0,1.0) + linear.add_color_stop_rgba(1.0,0.9,0.9,0.9,1.0) + cr.set_source(linear) + cr.rectangle(0,self.borders[VERT] + number*self.vertical_step,self.dimensions[HORZ],self.vertical_step) + cr.fill() + + def render_grid(self): + cr = self.context + cr.set_source_rgba(0.7, 0.7, 0.7) + cr.set_dash((1,0,0,0,0,0,1)) + cr.set_line_width(0.5) + for number,label in enumerate(self.labels[VERT]): + h = cr.text_extents(label)[3] + cr.move_to(self.borders[HORZ] + number*self.horizontal_step, self.vertical_step/2 + h) + cr.line_to(self.borders[HORZ] + number*self.horizontal_step, self.dimensions[VERT]) + cr.stroke() + + def render_labels(self): + self.context.set_font_size(0.02 * self.dimensions[HORZ]) + + self.render_horz_labels() + self.render_vert_labels() + + def render_horz_labels(self): + cr = self.context + labels = self.labels[HORZ] + if not labels: + labels = [str(i) for i in range(1, self.bounds[HORZ][1] + 1) ] + for number,label in enumerate(labels): + if label != None: + cr.set_source_rgba(0.5, 0.5, 0.5) + w,h = cr.text_extents(label)[2], cr.text_extents(label)[3] + cr.move_to(40,self.borders[VERT] + number*self.vertical_step + self.vertical_step/2 + h/2) + cr.show_text(label) + + def render_vert_labels(self): + cr = self.context + labels = self.labels[VERT] + if not labels: + labels = [str(i) for i in range(1, self.bounds[VERT][1] + 1) ] + for number,label in enumerate(labels): + w,h = cr.text_extents(label)[2], cr.text_extents(label)[3] + cr.move_to(self.borders[HORZ] + number*self.horizontal_step - w/2, self.vertical_step/2) + cr.show_text(label) + + def render_rectangle(self, x0, y0, x1, y1, color): + self.draw_shadow(x0, y0, x1, y1) + self.draw_rectangle(x0, y0, x1, y1, color) + + def draw_rectangular_shadow(self, gradient, x0, y0, w, h): + self.context.set_source(gradient) + self.context.rectangle(x0,y0,w,h) + self.context.fill() + + def draw_circular_shadow(self, x, y, radius, ang_start, ang_end, mult, shadow): + gradient = cairo.RadialGradient(x, y, 0, x, y, 2*radius) + gradient.add_color_stop_rgba(0, 0, 0, 0, shadow) + gradient.add_color_stop_rgba(1, 0, 0, 0, 0) + self.context.set_source(gradient) + self.context.move_to(x,y) + self.context.line_to(x + mult[0]*radius,y + mult[1]*radius) + self.context.arc(x, y, 8, ang_start, ang_end) + self.context.line_to(x,y) + self.context.close_path() + self.context.fill() + + def draw_rectangle(self, x0, y0, x1, y1, color): + cr = self.context + middle = (x0+x1)/2 + linear = cairo.LinearGradient(middle,y0,middle,y1) + linear.add_color_stop_rgba(0,3.5*color[0]/5.0, 3.5*color[1]/5.0, 3.5*color[2]/5.0,1.0) + linear.add_color_stop_rgba(1,*color[:4]) + cr.set_source(linear) + + cr.arc(x0+5, y0+5, 5, 0, 2*math.pi) + cr.arc(x1-5, y0+5, 5, 0, 2*math.pi) + cr.arc(x0+5, y1-5, 5, 0, 2*math.pi) + cr.arc(x1-5, y1-5, 5, 0, 2*math.pi) + cr.rectangle(x0+5,y0,x1-x0-10,y1-y0) + cr.rectangle(x0,y0+5,x1-x0,y1-y0-10) + cr.fill() + + def draw_shadow(self, x0, y0, x1, y1): + shadow = 0.4 + h_mid = (x0+x1)/2 + v_mid = (y0+y1)/2 + h_linear_1 = cairo.LinearGradient(h_mid,y0-4,h_mid,y0+4) + h_linear_2 = cairo.LinearGradient(h_mid,y1-4,h_mid,y1+4) + v_linear_1 = cairo.LinearGradient(x0-4,v_mid,x0+4,v_mid) + v_linear_2 = cairo.LinearGradient(x1-4,v_mid,x1+4,v_mid) + + h_linear_1.add_color_stop_rgba( 0, 0, 0, 0, 0) + h_linear_1.add_color_stop_rgba( 1, 0, 0, 0, shadow) + h_linear_2.add_color_stop_rgba( 0, 0, 0, 0, shadow) + h_linear_2.add_color_stop_rgba( 1, 0, 0, 0, 0) + v_linear_1.add_color_stop_rgba( 0, 0, 0, 0, 0) + v_linear_1.add_color_stop_rgba( 1, 0, 0, 0, shadow) + v_linear_2.add_color_stop_rgba( 0, 0, 0, 0, shadow) + v_linear_2.add_color_stop_rgba( 1, 0, 0, 0, 0) + + self.draw_rectangular_shadow(h_linear_1,x0+4,y0-4,x1-x0-8,8) + self.draw_rectangular_shadow(h_linear_2,x0+4,y1-4,x1-x0-8,8) + self.draw_rectangular_shadow(v_linear_1,x0-4,y0+4,8,y1-y0-8) + self.draw_rectangular_shadow(v_linear_2,x1-4,y0+4,8,y1-y0-8) + + self.draw_circular_shadow(x0+4, y0+4, 4, math.pi, 3*math.pi/2, (-1,0), shadow) + self.draw_circular_shadow(x1-4, y0+4, 4, 3*math.pi/2, 2*math.pi, (0,-1), shadow) + self.draw_circular_shadow(x0+4, y1-4, 4, math.pi/2, math.pi, (0,1), shadow) + self.draw_circular_shadow(x1-4, y1-4, 4, 0, math.pi/2, (1,0), shadow) + + def render_plot(self): + for index,group in enumerate(self.series): + for data in group: + self.render_rectangle(self.borders[HORZ] + data.content[0]*self.horizontal_step, + self.borders[VERT] + index*self.vertical_step + self.vertical_step/4.0, + self.borders[HORZ] + data.content[1]*self.horizontal_step, + self.borders[VERT] + index*self.vertical_step + 3.0*self.vertical_step/4.0, + self.series_colors[index]) + +# Function definition + +def scatter_plot(name, + data = None, + errorx = None, + errory = None, + width = 640, + height = 480, + background = "white light_gray", + border = 0, + axis = False, + dash = False, + discrete = False, + dots = False, + grid = False, + series_legend = False, + x_labels = None, + y_labels = None, + x_bounds = None, + y_bounds = None, + z_bounds = None, + x_title = None, + y_title = None, + series_colors = None, + circle_colors = None): + + ''' + - Function to plot scatter data. + + - Parameters + + data - The values to be ploted might be passed in a two basic: + list of points: [(0,0), (0,1), (0,2)] or [(0,0,1), (0,1,4), (0,2,1)] + lists of coordinates: [ [0,0,0] , [0,1,2] ] or [ [0,0,0] , [0,1,2] , [1,4,1] ] + Notice that these kinds of that can be grouped in order to form more complex data + using lists of lists or dictionaries; + series_colors - Define color values for each of the series + circle_colors - Define a lower and an upper bound for the circle colors for variable radius + (3 dimensions) series + ''' + + plot = ScatterPlot( name, data, errorx, errory, width, height, background, border, + axis, dash, discrete, dots, grid, series_legend, x_labels, y_labels, + x_bounds, y_bounds, z_bounds, x_title, y_title, series_colors, circle_colors ) + plot.render() + plot.commit() + +def dot_line_plot(name, + data, + width, + height, + background = "white light_gray", + border = 0, + axis = False, + dash = False, + dots = False, + grid = False, + series_legend = False, + x_labels = None, + y_labels = None, + x_bounds = None, + y_bounds = None, + x_title = None, + y_title = None, + series_colors = None): + ''' + - Function to plot graphics using dots and lines. + + dot_line_plot (name, data, width, height, background = "white light_gray", border = 0, axis = False, grid = False, x_labels = None, y_labels = None, x_bounds = None, y_bounds = None) + + - Parameters + + name - Name of the desired output file, no need to input the .svg as it will be added at runtim; + data - The list, list of lists or dictionary holding the data to be plotted; + width, height - Dimensions of the output image; + background - A 3 element tuple representing the rgb color expected for the background or a new cairo linear gradient. + If left None, a gray to white gradient will be generated; + border - Distance in pixels of a square border into which the graphics will be drawn; + axis - Whether or not the axis are to be drawn; + dash - Boolean or a list or a dictionary of booleans indicating whether or not the associated series should be drawn in dashed mode; + dots - Whether or not dots should be drawn on each point; + grid - Whether or not the gris is to be drawn; + series_legend - Whether or not the legend is to be drawn; + x_labels, y_labels - lists of strings containing the horizontal and vertical labels for the axis; + x_bounds, y_bounds - tuples containing the lower and upper value bounds for the data to be plotted; + x_title - Whether or not to plot a title over the x axis. + y_title - Whether or not to plot a title over the y axis. + + - Examples of use + + data = [0, 1, 3, 8, 9, 0, 10, 10, 2, 1] + CairoPlot.dot_line_plot('teste', data, 400, 300) + + data = { "john" : [10, 10, 10, 10, 30], "mary" : [0, 0, 3, 5, 15], "philip" : [13, 32, 11, 25, 2] } + x_labels = ["jan/2008", "feb/2008", "mar/2008", "apr/2008", "may/2008" ] + CairoPlot.dot_line_plot( 'test', data, 400, 300, axis = True, grid = True, + series_legend = True, x_labels = x_labels ) + ''' + plot = DotLinePlot( name, data, width, height, background, border, + axis, dash, dots, grid, series_legend, x_labels, y_labels, + x_bounds, y_bounds, x_title, y_title, series_colors ) + plot.render() + plot.commit() + +def function_plot(name, + data, + width, + height, + background = "white light_gray", + border = 0, + axis = True, + dots = False, + discrete = False, + grid = False, + series_legend = False, + x_labels = None, + y_labels = None, + x_bounds = None, + y_bounds = None, + x_title = None, + y_title = None, + series_colors = None, + step = 1): + + ''' + - Function to plot functions. + + function_plot(name, data, width, height, background = "white light_gray", border = 0, axis = True, grid = False, dots = False, x_labels = None, y_labels = None, x_bounds = None, y_bounds = None, step = 1, discrete = False) + + - Parameters + + name - Name of the desired output file, no need to input the .svg as it will be added at runtim; + data - The list, list of lists or dictionary holding the data to be plotted; + width, height - Dimensions of the output image; + background - A 3 element tuple representing the rgb color expected for the background or a new cairo linear gradient. + If left None, a gray to white gradient will be generated; + border - Distance in pixels of a square border into which the graphics will be drawn; + axis - Whether or not the axis are to be drawn; + grid - Whether or not the gris is to be drawn; + dots - Whether or not dots should be shown at each point; + x_labels, y_labels - lists of strings containing the horizontal and vertical labels for the axis; + x_bounds, y_bounds - tuples containing the lower and upper value bounds for the data to be plotted; + step - the horizontal distance from one point to the other. The smaller, the smoother the curve will be; + discrete - whether or not the function should be plotted in discrete format. + + - Example of use + + data = lambda x : x**2 + CairoPlot.function_plot('function4', data, 400, 300, grid = True, x_bounds=(-10,10), step = 0.1) + ''' + + plot = FunctionPlot( name, data, width, height, background, border, + axis, discrete, dots, grid, series_legend, x_labels, y_labels, + x_bounds, y_bounds, x_title, y_title, series_colors, step ) + plot.render() + plot.commit() + +def pie_plot( name, data, width, height, background = "white light_gray", gradient = False, shadow = False, colors = None ): + + ''' + - Function to plot pie graphics. + + pie_plot(name, data, width, height, background = "white light_gray", gradient = False, colors = None) + + - Parameters + + name - Name of the desired output file, no need to input the .svg as it will be added at runtim; + data - The list, list of lists or dictionary holding the data to be plotted; + width, height - Dimensions of the output image; + background - A 3 element tuple representing the rgb color expected for the background or a new cairo linear gradient. + If left None, a gray to white gradient will be generated; + gradient - Whether or not the pie color will be painted with a gradient; + shadow - Whether or not there will be a shadow behind the pie; + colors - List of slices colors. + + - Example of use + + teste_data = {"john" : 123, "mary" : 489, "philip" : 890 , "suzy" : 235} + CairoPlot.pie_plot("pie_teste", teste_data, 500, 500) + ''' + + plot = PiePlot( name, data, width, height, background, gradient, shadow, colors ) + plot.render() + plot.commit() + +def donut_plot(name, data, width, height, background = "white light_gray", gradient = False, shadow = False, colors = None, inner_radius = -1): + + ''' + - Function to plot donut graphics. + + donut_plot(name, data, width, height, background = "white light_gray", gradient = False, inner_radius = -1) + + - Parameters + + name - Name of the desired output file, no need to input the .svg as it will be added at runtim; + data - The list, list of lists or dictionary holding the data to be plotted; + width, height - Dimensions of the output image; + background - A 3 element tuple representing the rgb color expected for the background or a new cairo linear gradient. + If left None, a gray to white gradient will be generated; + shadow - Whether or not there will be a shadow behind the donut; + gradient - Whether or not the donut color will be painted with a gradient; + colors - List of slices colors; + inner_radius - The radius of the donut's inner circle. + + - Example of use + + teste_data = {"john" : 123, "mary" : 489, "philip" : 890 , "suzy" : 235} + CairoPlot.donut_plot("donut_teste", teste_data, 500, 500) + ''' + + plot = DonutPlot(name, data, width, height, background, gradient, shadow, colors, inner_radius) + plot.render() + plot.commit() + +def gantt_chart(name, pieces, width, height, x_labels, y_labels, colors): + + ''' + - Function to generate Gantt Charts. + + gantt_chart(name, pieces, width, height, x_labels, y_labels, colors): + + - Parameters + + name - Name of the desired output file, no need to input the .svg as it will be added at runtim; + pieces - A list defining the spaces to be drawn. The user must pass, for each line, the index of its start and the index of its end. If a line must have two or more spaces, they must be passed inside a list; + width, height - Dimensions of the output image; + x_labels - A list of names for each of the vertical lines; + y_labels - A list of names for each of the horizontal spaces; + colors - List containing the colors expected for each of the horizontal spaces + + - Example of use + + pieces = [ (0.5,5.5) , [(0,4),(6,8)] , (5.5,7) , (7,8)] + x_labels = [ 'teste01', 'teste02', 'teste03', 'teste04'] + y_labels = [ '0001', '0002', '0003', '0004', '0005', '0006', '0007', '0008', '0009', '0010' ] + colors = [ (1.0, 0.0, 0.0), (1.0, 0.7, 0.0), (1.0, 1.0, 0.0), (0.0, 1.0, 0.0) ] + CairoPlot.gantt_chart('gantt_teste', pieces, 600, 300, x_labels, y_labels, colors) + ''' + + plot = GanttChart(name, pieces, width, height, x_labels, y_labels, colors) + plot.render() + plot.commit() + +def vertical_bar_plot(name, + data, + width, + height, + background = "white light_gray", + border = 0, + display_values = False, + grid = False, + rounded_corners = False, + stack = False, + three_dimension = False, + series_labels = None, + x_labels = None, + y_labels = None, + x_bounds = None, + y_bounds = None, + colors = None): + #TODO: Fix docstring for vertical_bar_plot + ''' + - Function to generate vertical Bar Plot Charts. + + bar_plot(name, data, width, height, background, border, grid, rounded_corners, three_dimension, + x_labels, y_labels, x_bounds, y_bounds, colors): + + - Parameters + + name - Name of the desired output file, no need to input the .svg as it will be added at runtime; + data - The list, list of lists or dictionary holding the data to be plotted; + width, height - Dimensions of the output image; + background - A 3 element tuple representing the rgb color expected for the background or a new cairo linear gradient. + If left None, a gray to white gradient will be generated; + border - Distance in pixels of a square border into which the graphics will be drawn; + grid - Whether or not the gris is to be drawn; + rounded_corners - Whether or not the bars should have rounded corners; + three_dimension - Whether or not the bars should be drawn in pseudo 3D; + x_labels, y_labels - lists of strings containing the horizontal and vertical labels for the axis; + x_bounds, y_bounds - tuples containing the lower and upper value bounds for the data to be plotted; + colors - List containing the colors expected for each of the bars. + + - Example of use + + data = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10] + CairoPlot.vertical_bar_plot ('bar2', data, 400, 300, border = 20, grid = True, rounded_corners = False) + ''' + + plot = VerticalBarPlot(name, data, width, height, background, border, + display_values, grid, rounded_corners, stack, three_dimension, + series_labels, x_labels, y_labels, x_bounds, y_bounds, colors) + plot.render() + plot.commit() + +def horizontal_bar_plot(name, + data, + width, + height, + background = "white light_gray", + border = 0, + display_values = False, + grid = False, + rounded_corners = False, + stack = False, + three_dimension = False, + series_labels = None, + x_labels = None, + y_labels = None, + x_bounds = None, + y_bounds = None, + colors = None): + + #TODO: Fix docstring for horizontal_bar_plot + ''' + - Function to generate Horizontal Bar Plot Charts. + + bar_plot(name, data, width, height, background, border, grid, rounded_corners, three_dimension, + x_labels, y_labels, x_bounds, y_bounds, colors): + + - Parameters + + name - Name of the desired output file, no need to input the .svg as it will be added at runtime; + data - The list, list of lists or dictionary holding the data to be plotted; + width, height - Dimensions of the output image; + background - A 3 element tuple representing the rgb color expected for the background or a new cairo linear gradient. + If left None, a gray to white gradient will be generated; + border - Distance in pixels of a square border into which the graphics will be drawn; + grid - Whether or not the gris is to be drawn; + rounded_corners - Whether or not the bars should have rounded corners; + three_dimension - Whether or not the bars should be drawn in pseudo 3D; + x_labels, y_labels - lists of strings containing the horizontal and vertical labels for the axis; + x_bounds, y_bounds - tuples containing the lower and upper value bounds for the data to be plotted; + colors - List containing the colors expected for each of the bars. + + - Example of use + + data = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10] + CairoPlot.bar_plot ('bar2', data, 400, 300, border = 20, grid = True, rounded_corners = False) + ''' + + plot = HorizontalBarPlot(name, data, width, height, background, border, + display_values, grid, rounded_corners, stack, three_dimension, + series_labels, x_labels, y_labels, x_bounds, y_bounds, colors) + plot.render() + plot.commit() + +def stream_chart(name, + data, + width, + height, + background = "white light_gray", + border = 0, + grid = False, + series_legend = None, + x_labels = None, + x_bounds = None, + y_bounds = None, + colors = None): + + #TODO: Fix docstring for horizontal_bar_plot + plot = StreamChart(name, data, width, height, background, border, + grid, series_legend, x_labels, x_bounds, y_bounds, colors) + plot.render() + plot.commit() + + +if __name__ == "__main__": + import tests + import seriestests |