def get_text_layout(self, ctx, text=None, exclude_extents=True):
layout = PangoCairo.create_layout(ctx)
pango_font_desc = Pango.FontDescription.from_string(self.font)
layout.set_wrap(Pango.WrapMode(0))
layout.set_font_description(pango_font_desc)
if text is None:
text = self.display_text
layout.set_markup(text)
if (self.max_width_chars > 0):
font_size = pango_font_desc.get_size()
if pango_font_desc.get_size_is_absolute():
font_size *= Pango.SCALE
layout.set_width(int(self.max_width_chars * font_size))
text_rect = layout.get_pixel_extents()[0]
text_width = text_rect.width
text_height = text_rect.height
text_left = text_rect.x
text_top = text_rect.y
if (self.max_width_chars > 0):
text_width = layout.get_width() * 1. / Pango.SCALE
text_point_rect = layout.get_extents()[0]
if self.max_width_chars <= 0: # or self.exposure<1:
layout.set_width(int(text_point_rect.width))
if self.x_align == X_ALIGN_LEFT:
x = self.border_width + self.corner_radius
elif self.x_align == X_ALIGN_RIGHT:
x = self.width - text_width - self.border_width - self.corner_radius
elif self.x_align == X_ALIGN_CENTER:
x = (self.width - text_width) * .5
if self.y_align == Y_ALIGN_TOP:
y = self.border_width + self.corner_radius
elif self.y_align == Y_ALIGN_BOTTOM:
y = self.height - text_height - self.border_width - self.corner_radius
elif self.y_align == Y_ALIGN_MIDDLE:
y = (self.height - text_height) * .5
if isinstance(self.font_color, GradientColor):
ctx.set_source(self.font_color.get_pattern())
elif self.font_color is not None:
ctx.set_source_rgba(*self.font_color.get_array())
layout.set_alignment(Pango.Alignment(int(round(self.line_align))))
PangoCairo.update_layout(ctx, layout)
if exclude_extents:
x -= text_left
y -= text_top
return layout, x, y
def calculate_text_size(self):
surf = cairo.ImageSurface(cairo.FORMAT_ARGB32, 320, 120)
context = cairo.Context(surf)
layout = PangoCairo.create_layout(context)
pango_font_desc = Pango.FontDescription.from_string(self.font)
layout.set_wrap(Pango.WrapMode(0))
layout.set_font_description(pango_font_desc)
#from "pose", line-align may become float
layout.set_alignment(Pango.Alignment(int(self.line_align)))
if (self.max_width_chars > 0):
layout.set_width(
int(self.max_width_chars * pango_font_desc.get_size()))
try:
layout.set_markup(self.text)
except:
pass
return layout.get_pixel_extents()[0]
def draw_text(ctx, text,
x, y, width=None, corner=5, align=None, fit_width=False,
height=None, fit_height=False,
text_color=None, back_color=None, border_color=None, border_width=1,
padding=0, font_name=None, pre_draw=None):
layout = PangoCairo.create_layout(ctx)
font = Pango.FontDescription.from_string(font_name)
layout.set_wrap(Pango.WrapMode(0))
layout.set_font_description(font)
layout.set_alignment(Pango.Alignment(0))
layout.set_markup(text)
text_rect = layout.get_pixel_extents()[1]
l = text_rect.x
t = text_rect.y
w= text_rect.width
h = text_rect.height
scale_x = 1
scale_y = 1
if width:
if width<w:
if fit_width:
scale_x = width/float(w)
else:
layout.set_width(int(width*Pango.SCALE))
#w = width
else:
width = w
if height:
if height<h:
if fit_height:
scale_y = height/float(h)
else:
h = height
else:
height = 0
if align:
if align.find("bottom-center")>=0:
y -= t+h*scale_y+2*padding
elif align.find("bottom")>=0:
y -= -t+h*scale_y+padding
if align.find("right")>=0:
x -= w*scale_x+padding
elif align.find("hcenter")>=0:
x -= (w*scale_x+padding)*.5
if back_color:
ctx.save()
if pre_draw: pre_draw(ctx)
ctx.translate(x, y)
ctx.scale(scale_x, scale_y)
draw_rounded_rectangle(ctx, 0, 0, w+2*padding, h+2*padding, corner)
ctx.restore()
draw_fill(ctx, back_color)
if border_color:
ctx.save()
if pre_draw: pre_draw(ctx)
ctx.translate(x, y)
ctx.scale(scale_x, scale_y)
draw_rounded_rectangle(ctx, 0, 0, w+2*padding, h+2*padding, corner)
ctx.restore()
draw_stroke(ctx, border_width, border_color)
if not text_color:
ctx.set_source_rgba(0,0,0,1)
elif isinstance(text_color, Color):
ctx.set_source_rgba(*text_color.get_array())
elif type(text_color) is str:
ctx.set_source_rgba(*Color.from_html(text_color).get_array())
ctx.save()
if pre_draw: pre_draw(ctx)
ctx.translate(x, y)
ctx.move_to(padding, padding)
ctx.scale(scale_x, scale_y)
PangoCairo.show_layout(ctx, layout)
ctx.restore()
return Rect(x, y, w+2*padding, h+2*padding)
