Add ``print_labels`` option to print label too. (Fix #197) Add ``value_label_font_family`` and ``value_label_font_size`` style options for ``print_labels``. Default ``print_zeroes`` to True (Re)Add xlink in desc to show on tooltip Activate element on tooltip hovering. (Fix #106)

demo/moulinrouge/tests.py

@@ -50,7 +50,7 @@ def get_test_routes(app):
     def test_bar_links():
         bar = StackedLine(style=styles['default'](
             font_family='googlefont:Raleway'))
-        # bar.js = ('http://l:2343/2.0.x/pygal-tooltips.js',)
+        bar.js = ('http://l:2343/2.0.x/pygal-tooltips.js',)
         bar.title = 'Wow ! Such Chart !'
         bar.x_title = 'Many x labels'
         bar.y_title = 'Much y labels'
@@ -145,31 +145,42 @@ def get_test_routes(app):
         bar.x_labels = range(1, 4)
         return bar.render_response()
 
-    @app.route('/test/print_values')
-    def test_bar_print_values():
-        bar = Bar(print_values=True, js=[],
-                  style=styles['default'](
-                      value_font_family='googlefont:Raleway',
-                      value_font_size=30,
-                      value_colors=(None, None, 'blue', 'red', 'green')
-                  ))
+    @app.route('/test/print_values/<chart>')
+    def test_print_values_for(chart):
+        graph = CHARTS_BY_NAME[chart](
+            print_values=True, print_labels=True, print_zeroes=True,
+            style=styles['default'](
+                value_font_family='googlefont:Raleway',
+                value_colors=(None, None, 'blue', 'red', 'green')
+            ))
+        graph.js = ('http://l:2343/2.0.x/pygal-tooltips.js',)
         for i in range(12):
-            bar.add('', i)
-        return bar.render_response()
+            graph.add('', [{
+                'value': i + j,
+                'label': 'abcdefghijklmnopqrstuvwxyz'[i + j]
+            } for j in range(5)])
+        return graph.render_response()
 
     @app.route('/test/treemap')
     def test_treemap():
-        treemap = Treemap(style=RotateStyle('#ff5995', opacity=.6))
+        treemap = Treemap(style=RotateStyle('#ff5995', opacity=.6,
+                                            value_font_size=32,
+                                            value_colors=['#ffffff']))
         treemap.title = 'Binary TreeMap'
-        treemap.add('A', [2, 1, 12, 4, 2, 1, 1, 3, 12, 3, 4, None, 9])
-        treemap.add('B', [4, 2, 5, 10, 3, 4, 2, 7, 4, -10, None, 8, 3, 1])
-        treemap.add('C', [3, 8, 3, 3, 5, 3, 3, 5, 4, 12])
-        treemap.add('D', [23, 18])
-        treemap.add('E', [1, 2, 1, 2, 3, 3, 1, 2, 3,
-                          4, 3, 1, 2, 1, 1, 1, 1, 1])
-        treemap.add('F', [31])
-        treemap.add('G', [5, 9.3, 8.1, 12, 4, 3, 2])
-        treemap.add('H', [12, 3, 3])
+        treemap.print_values = True
+        treemap.print_labels = True
+        for i in range(1, 5):
+            treemap.add('', [{'label': 'Area %d' % i, 'value': i}])
+        treemap.add('', [2])
+        # treemap.add('A', [2, 1, 12, 4, 2, 1, 1, 3, 12, 3, 4, None, 9])
+        # treemap.add('B', [4, 2, 5, 10, 3, 4, 2, 7, 4, -10, None, 8, 3, 1])
+        # treemap.add('C', [3, 8, 3, 3, 5, 3, 3, 5, 4, 12])
+        # treemap.add('D', [23, 18])
+        # treemap.add('E', [1, 2, 1, 2, 3, 3, 1, 2, 3,
+        #                   4, 3, 1, 2, 1, 1, 1, 1, 1])
+        # treemap.add('F', [31])
+        # treemap.add('G', [5, 9.3, 8.1, 12, 4, 3, 2])
+        # treemap.add('H', [12, 3, 3])
         return treemap.render_response()
 
     @app.route('/test/gauge')

docs/changelog.rst

@@ -7,6 +7,11 @@ Changelog
 
 * Fix the missing title on x_labels with labels.
 * Auto cast to str x labels in non dual charts (#178)
+* Add ``print_labels`` option to print label too. (#197)
+* Add ``value_label_font_family`` and ``value_label_font_size`` style options for ``print_labels``.
+* Default ``print_zeroes`` to True
+* (Re)Add xlink in desc to show on tooltip
+* Activate element on tooltip hovering. (#106)
 
 2.0.0
 =====

docs/documentation/configuration/data.rst

@@ -28,12 +28,12 @@ Same on x axis for xy like charts:
 print_values
 ------------
 
-When using pygal without javascript for printing for example you can chose to activate this option to print all values as text.
+When using pygal to display static charts for printing for example you can chose to activate this option to print all values as text.
 
 .. pygal-code::
 
   from pygal.style import DefaultStyle
-  chart = pygal.Bar(js=[], print_values=True, style=DefaultStyle(
+  chart = pygal.Bar(print_values=True, style=DefaultStyle(
                     value_font_family='googlefont:Raleway',
                     value_font_size=30,
                     value_colors=('white',)))
@@ -43,14 +43,47 @@ When using pygal without javascript for printing for example you can chose to ac
 print_zeroes
 ------------
 
-zero values are hidden by default but you can use this option to print them anyway.
+zero values are shown by default but you can use this option to hide them.
 
 .. pygal-code::
 
-  chart = pygal.Bar(js=[], print_values=True, print_zeroes=True)
+  chart = pygal.Bar(print_values=True, print_zeroes=False)
   chart.add('line', [0, 12, 31, 8, 28, 0])
 
 
+print_labels
+------------
+
+You can activate value label display:
+
+.. pygal-code::
+
+  chart = pygal.Bar(print_labels=True)
+  chart.add('line', [
+    0,
+    {'value': 12, 'label': 'Twelve'},
+    31,
+    {'value': 8, 'label': 'eight'},
+    28,
+    0
+  ])
+
+
+Displaying both is also possible:
+
+.. pygal-code::
+
+  chart = pygal.Bar(print_labels=True, print_values=True)
+  chart.add('line', [
+    0,
+    {'value': 12, 'label': 'Twelve'},
+    31,
+    {'value': 8, 'label': 'eight'},
+    28,
+    0
+  ])
+
+
 human_readable
 --------------
 

docs/documentation/custom_styles.rst

@@ -47,7 +47,8 @@ Properties                        Description
 ``font_family``                   The main font family
 ``label_font_family``             The label font family
 ``major_label_font_family``       The major label font family
-``value_font_family``             The ``print_value`` font family
+``value_font_family``             The ``print_values`` font family
+``value_label_font_family``       The ``print_labels`` font family
 ``tooltip_font_family``           The tooltip font family
 ``title_font_family``             The title font family
 ``legend_font_family``            The legend font family
@@ -56,7 +57,8 @@ Properties                        Description
 ``major_guide_stroke_dasharray``  The dasharray for major guide line
 ``label_font_size``               The label font size
 ``major_label_font_size``         The major label font size
-``value_font_size``               The ``print_value`` font size
+``value_font_size``               The ``print_values`` font size
+``value_label_font_size``         The ``print_labels`` font size
 ``tooltip_font_size``             The tooltip font size
 ``title_font_size``               The title font size
 ``legend_font_size``              The legend font size
@@ -65,7 +67,7 @@ Properties                        Description
 ``opacity_hover``                 The opacity of chart element on mouse hover
 ``transition``                    Define the global transition property for animation
 ``colors``                        The serie color list
-``value_colors``                  The ``print_value`` color list
+``value_colors``                  The ``print_values`` color list
 ================================  =========================
 
 

pygal/config.py

@@ -448,11 +448,15 @@ class Config(CommonConfig):
 
     print_values = Key(
         False, bool,
-        "Text", "Print values when graph is in non interactive mode")
+        "Text", "Display values as text over plot")
 
     print_zeroes = Key(
+        True, bool,
+        "Text", "Display zero values as well")
+
+    print_labels = Key(
         False, bool,
-        "Text", "Print zeroes when graph is in non interactive mode")
+        "Text", "Display value labels")
 
     truncate_legend = Key(
         None, int, "Text",

pygal/css/base.css

@@ -48,11 +48,16 @@
   font-size: {{ style.major_label_font_size }}px;
 }
 
-{{ id }}.series text {
+{{ id }}.text-overlay text.value {
   font-family: {{ style.value_font_family }};
   font-size: {{ style.value_font_size }}px;
 }
 
+{{ id }}.text-overlay text.label {
+  font-family: {{ style.value_label_font_family }};
+  font-size: {{ style.value_label_font_size }}px;
+}
+
 {{ id }}.tooltip {
   font-family: {{ style.tooltip_font_family }};
   font-size: {{ style.tooltip_font_size }}px;

pygal/css/style.css

@@ -130,6 +130,11 @@
   fill: {{ style.foreground_strong }};
 }
 
+{{ id }}.tooltip .xlink {
+  font-size: .5em;
+  text-decoration: underline;
+}
+
 {{ id }}.tooltip .value {
   font-size: 1.5em;
 }

pygal/graph/bar.py

@@ -91,7 +91,7 @@ class Bar(Graph):
             self._tooltip_data(
                 bar, val, x_center, y_center, "centered",
                 self._get_x_label(i))
-            self._static_value(serie_node, val, x_center, y_center)
+            self._static_value(serie_node, val, x_center, y_center, metadata)
 
     def _compute(self):
         """Compute y min and max and y scale and set labels"""

pygal/graph/box.py

@@ -113,7 +113,7 @@ class Box(Graph):
             box, serie.values[1:6], serie.outliers, serie.index, metadata)
         self._tooltip_data(box, val, x_center, y_center, "centered",
                            self._get_x_label(serie.index))
-        self._static_value(serie_node, val, x_center, y_center)
+        self._static_value(serie_node, val, x_center, y_center, metadata)
 
     def _draw_box(self, parent_node, quartiles, outliers, box_index, metadata):
         """

pygal/graph/dot.py

@@ -71,7 +71,7 @@ class Dot(Graph):
             self._tooltip_data(
                 dots, value, x, y, 'centered',
                 self._get_x_label(i))
-            self._static_value(serie_node, value, x, y)
+            self._static_value(serie_node, value, x, y, metadata)
 
     def _compute(self):
         """Compute y min and max and y scale and set labels"""

pygal/graph/funnel.py

@@ -62,7 +62,7 @@ class Funnel(Graph):
             self._tooltip_data(
                 funnels, value, x, y, 'centered',
                 self._get_x_label(serie.index))
-            self._static_value(serie_node, value, x, y)
+            self._static_value(serie_node, value, x, y, metadata)
 
     def _center(self, x):
         return x - 1 / (2 * self._order)

pygal/graph/gauge.py

@@ -90,7 +90,7 @@ class Gauge(Graph):
             self._tooltip_data(
                 gauges, value, x, y,
                 xlabel=self._get_x_label(i))
-            self._static_value(serie_node, value, x, y)
+            self._static_value(serie_node, value, x, y, metadata)
 
     def _y_axis(self, draw_axes=True):
         """Override y axis to plot a polar axis"""

pygal/graph/graph.py

@@ -457,12 +457,24 @@ class Graph(PublicApi):
             self.svg.node(node, 'desc',
                           class_="x_label").text = to_str(xlabel)
 
-    def _static_value(self, serie_node, value, x, y):
+    def _static_value(self, serie_node, value, x, y, metadata):
         """Write the print value"""
+        label = metadata and metadata.get('label')
+        if self.print_labels and label:
+            if self.print_values:
+                y -= self.style.value_font_size / 2
+            self.svg.node(
+                serie_node['text_overlay'], 'text',
+                class_='centered label',
+                x=x,
+                y=y + self.style.value_font_size / 3
+            ).text = label
+            y += self.style.value_font_size
+
         if self.print_values:
             self.svg.node(
                 serie_node['text_overlay'], 'text',
-                class_='centered',
+                class_='centered value',
                 x=x,
                 y=y + self.style.value_font_size / 3
             ).text = value if self.print_zeroes or value != '0' else ''

pygal/graph/histogram.py

@@ -97,7 +97,7 @@ class Histogram(Dual):
             self._tooltip_data(
                 bar, val, x_center, y_center, "centered",
                 self._get_x_label(i))
-            self._static_value(serie_node, val, x_center, y_center)
+            self._static_value(serie_node, val, x_center, y_center, metadata)
 
     def _compute(self):
         """Compute x/y min and max and x/y scale and set labels"""

pygal/graph/line.py

@@ -125,7 +125,8 @@ class Line(Graph):
                 self._static_value(
                     serie_node, val,
                     x + self.style.value_font_size,
-                    y + self.style.value_font_size)
+                    y + self.style.value_font_size,
+                    metadata)
 
         if serie.stroke:
             if self.interpolate:

pygal/graph/pie.py

@@ -84,7 +84,7 @@ class Pie(Graph):
 
             alter(self.svg.slice(
                 serie_node, slice_, big_radius, small_radius,
-                angle, start_angle, center, val, i), metadata)
+                angle, start_angle, center, val, i, metadata), metadata)
             start_angle += angle
             total_perc += perc
 
@@ -93,7 +93,7 @@ class Pie(Graph):
             self.svg.slice(serie_node,
                            self.svg.node(slices, class_="big_slice"),
                            radius * .9, 0, serie_angle,
-                           original_start_angle, center, val, i)
+                           original_start_angle, center, val, i, metadata)
         return serie_angle
 
     def _compute_x_labels(self):

pygal/graph/treemap.py

@@ -65,7 +65,8 @@ class Treemap(Graph):
         self._static_value(
             serie_node, value,
             rx + rw / 2,
-            ry + rh / 2)
+            ry + rh / 2,
+            metadata)
 
     def _binary_tree(self, data, total, x, y, w, h, parent=None):
         if total == 0:

pygal/style.py

@@ -43,6 +43,7 @@ class Style(object):
     label_font_family = None
     major_label_font_family = None
     value_font_family = None
+    value_label_font_family = None
     tooltip_font_family = None
     title_font_family = None
     legend_font_family = None
@@ -50,7 +51,8 @@ class Style(object):
 
     label_font_size = 10
     major_label_font_size = 10
-    value_font_size = 8
+    value_font_size = 16
+    value_label_font_size = 10
     tooltip_font_size = 14
     title_font_size = 16
     legend_font_size = 14

pygal/svg.py

@@ -239,7 +239,7 @@ class Svg(object):
 
     def slice(
             self, serie_node, node, radius, small_radius,
-            angle, start_angle, center, val, i):
+            angle, start_angle, center, val, i, metadata):
         """Draw a pie slice"""
         project = lambda rho, alpha: (
             rho * sin(-alpha), rho * cos(-alpha))
@@ -278,7 +278,7 @@ class Svg(object):
             node, val, x, y, "centered",
             self.graph._x_labels and self.graph._x_labels[i][0])
         if angle >= 0.3:  # 0.3 radians is about 17 degrees
-            self.graph._static_value(serie_node, val, x, y)
+            self.graph._static_value(serie_node, val, x, y, metadata)
         return rv
 
     def pre_render(self):

pygal/util.py

@@ -232,6 +232,8 @@ def decorate(svg, node, metadata):
         if not isinstance(xlink, dict):
             xlink = {'href': xlink, 'target': '_blank'}
         node = svg.node(node, 'a', **xlink)
+        svg.node(node, 'desc', class_='xlink').text = to_unicode(
+            xlink.get('href'))
 
     if 'color' in metadata:
         color = metadata.pop('color')