diff options
Diffstat (limited to 'deluge/plugins/Stats/deluge_stats/graph.py')
| -rw-r--r-- | deluge/plugins/Stats/deluge_stats/graph.py | 144 |
1 files changed, 74 insertions, 70 deletions
diff --git a/deluge/plugins/Stats/deluge_stats/graph.py b/deluge/plugins/Stats/deluge_stats/graph.py index 0d3220f..ddb8f54 100644 --- a/deluge/plugins/Stats/deluge_stats/graph.py +++ b/deluge/plugins/Stats/deluge_stats/graph.py @@ -104,20 +104,19 @@ class Graph: def set_interval(self, interval): self.interval = interval - def draw_to_context(self, context, width, height): - self.ctx = context + def draw_to_context(self, ctx, width, height): self.width, self.height = width, height - self.draw_rect(white, 0, 0, self.width, self.height) - self.draw_graph() - return self.ctx + self.draw_rect(ctx, white, 0, 0, self.width, self.height) + self.draw_graph(ctx) def draw(self, width, height): + """Create surface with context for use in tests""" surface = cairo.ImageSurface(cairo.FORMAT_ARGB32, width, height) ctx = cairo.Context(surface) self.draw_to_context(ctx, width, height) return surface - def draw_x_axis(self, bounds): + def draw_x_axis(self, ctx, bounds): (left, top, right, bottom) = bounds duration = self.length * self.interval start = self.last_update - duration @@ -142,13 +141,13 @@ class Graph: ) # + 0.5 to allign x to nearest pixel x = int(ratio * (seconds_to_step + i * x_step) + left) + 0.5 - self.draw_x_text(text, x, bottom) - self.draw_dotted_line(gray, x, top - 0.5, x, bottom + 0.5) + self.draw_x_text(ctx, text, x, bottom) + self.draw_dotted_line(ctx, gray, x, top - 0.5, x, bottom + 0.5) - self.draw_line(gray, left, bottom + 0.5, right, bottom + 0.5) + self.draw_line(ctx, gray, left, bottom + 0.5, right, bottom + 0.5) - def draw_graph(self): - font_extents = self.ctx.font_extents() + def draw_graph(self, ctx): + font_extents = ctx.font_extents() x_axis_space = font_extents[2] + 2 + self.line_size / 2 plot_height = self.height - x_axis_space # lets say we need 2n-1*font height pixels to plot the y ticks @@ -171,18 +170,18 @@ class Graph: # find the width of the y_ticks y_tick_text = [self.left_axis['formatter'](tick) for tick in y_ticks] - def space_required(text): - te = self.ctx.text_extents(text) + def space_required(ctx, text): + te = ctx.text_extents(text) return math.ceil(te[4] - te[0]) - y_tick_width = max(space_required(text) for text in y_tick_text) + y_tick_width = max(space_required(ctx, text) for text in y_tick_text) top = font_extents[2] / 2 # bounds(left, top, right, bottom) bounds = (y_tick_width + 4, top + 2, self.width, self.height - x_axis_space) - self.draw_x_axis(bounds) - self.draw_left_axis(bounds, y_ticks, y_tick_text) + self.draw_x_axis(ctx, bounds) + self.draw_left_axis(ctx, bounds, y_ticks, y_tick_text) def intervalise(self, x, limit=None): """Given a value x create an array of tick points to got with the graph @@ -229,7 +228,7 @@ class Graph: ] return intervals - def draw_left_axis(self, bounds, y_ticks, y_tick_text): + def draw_left_axis(self, ctx, bounds, y_ticks, y_tick_text): (left, top, right, bottom) = bounds stats = {} for stat in self.stat_info: @@ -246,29 +245,36 @@ class Graph: for i, y_val in enumerate(y_ticks): y = int(bottom - y_val * ratio) - 0.5 if i != 0: - self.draw_dotted_line(gray, left, y, right, y) - self.draw_y_text(y_tick_text[i], left, y) - self.draw_line(gray, left, top, left, bottom) + self.draw_dotted_line(ctx, gray, left, y, right, y) + self.draw_y_text(ctx, y_tick_text[i], left, y) + self.draw_line(ctx, gray, left, top, left, bottom) for stat, info in stats.items(): if len(info['values']) > 0: - self.draw_value_poly(info['values'], info['color'], max_value, bounds) self.draw_value_poly( - info['values'], info['fill_color'], max_value, bounds, info['fill'] + ctx, info['values'], info['color'], max_value, bounds + ) + self.draw_value_poly( + ctx, + info['values'], + info['fill_color'], + max_value, + bounds, + info['fill'], ) def draw_legend(self): pass - def trace_path(self, values, max_value, bounds): + def trace_path(self, ctx, values, max_value, bounds): (left, top, right, bottom) = bounds ratio = (bottom - top) / max_value line_width = self.line_size - self.ctx.set_line_width(line_width) - self.ctx.move_to(right, bottom) + ctx.set_line_width(line_width) + ctx.move_to(right, bottom) - self.ctx.line_to(right, int(bottom - values[0] * ratio)) + ctx.line_to(right, int(bottom - values[0] * ratio)) x = right step = (right - left) / (self.length - 1) @@ -276,64 +282,62 @@ class Graph: if i == self.length - 1: x = left - self.ctx.line_to(x, int(bottom - value * ratio)) + ctx.line_to(x, int(bottom - value * ratio)) x -= step - self.ctx.line_to(int(right - (len(values) - 1) * step), bottom) - self.ctx.close_path() + ctx.line_to(int(right - (len(values) - 1) * step), bottom) + ctx.close_path() - def draw_value_poly(self, values, color, max_value, bounds, fill=False): - self.trace_path(values, max_value, bounds) - self.ctx.set_source_rgba(*color) + def draw_value_poly(self, ctx, values, color, max_value, bounds, fill=False): + self.trace_path(ctx, values, max_value, bounds) + ctx.set_source_rgba(*color) if fill: - self.ctx.fill() + ctx.fill() else: - self.ctx.stroke() + ctx.stroke() - def draw_x_text(self, text, x, y): + def draw_x_text(self, ctx, text, x, y): """Draws text below and horizontally centered about x,y""" - fe = self.ctx.font_extents() - te = self.ctx.text_extents(text) + fe = ctx.font_extents() + te = ctx.text_extents(text) height = fe[2] x_bearing = te[0] width = te[2] - self.ctx.move_to(int(x - width / 2 + x_bearing), int(y + height)) - self.ctx.set_source_rgba(*self.black) - self.ctx.show_text(text) + ctx.move_to(int(x - width / 2 + x_bearing), int(y + height)) + ctx.set_source_rgba(*self.black) + ctx.show_text(text) - def draw_y_text(self, text, x, y): + def draw_y_text(self, ctx, text, x, y): """Draws text left of and vertically centered about x,y""" - fe = self.ctx.font_extents() - te = self.ctx.text_extents(text) + fe = ctx.font_extents() + te = ctx.text_extents(text) descent = fe[1] ascent = fe[0] x_bearing = te[0] width = te[4] - self.ctx.move_to( - int(x - width - x_bearing - 2), int(y + (ascent - descent) / 2) - ) - self.ctx.set_source_rgba(*self.black) - self.ctx.show_text(text) - - def draw_rect(self, color, x, y, height, width): - self.ctx.set_source_rgba(*color) - self.ctx.rectangle(x, y, height, width) - self.ctx.fill() - - def draw_line(self, color, x1, y1, x2, y2): - self.ctx.set_source_rgba(*color) - self.ctx.set_line_width(1) - self.ctx.move_to(x1, y1) - self.ctx.line_to(x2, y2) - self.ctx.stroke() - - def draw_dotted_line(self, color, x1, y1, x2, y2): - self.ctx.set_source_rgba(*color) - self.ctx.set_line_width(1) - dash, offset = self.ctx.get_dash() - self.ctx.set_dash(self.dash_length, 0) - self.ctx.move_to(x1, y1) - self.ctx.line_to(x2, y2) - self.ctx.stroke() - self.ctx.set_dash(dash, offset) + ctx.move_to(int(x - width - x_bearing - 2), int(y + (ascent - descent) / 2)) + ctx.set_source_rgba(*self.black) + ctx.show_text(text) + + def draw_rect(self, ctx, color, x, y, height, width): + ctx.set_source_rgba(*color) + ctx.rectangle(x, y, height, width) + ctx.fill() + + def draw_line(self, ctx, color, x1, y1, x2, y2): + ctx.set_source_rgba(*color) + ctx.set_line_width(1) + ctx.move_to(x1, y1) + ctx.line_to(x2, y2) + ctx.stroke() + + def draw_dotted_line(self, ctx, color, x1, y1, x2, y2): + ctx.set_source_rgba(*color) + ctx.set_line_width(1) + dash, offset = ctx.get_dash() + ctx.set_dash(self.dash_length, 0) + ctx.move_to(x1, y1) + ctx.line_to(x2, y2) + ctx.stroke() + ctx.set_dash(dash, offset) |