def update_preview(self, *args, **kwargs):
try:
imdata = self.preview_handler.queue.get(False)
except queue.Empty:
return
# textures must be created in the main thread;
# this is a limitation in pygame
texture = Texture.create_from_data(imdata)
if self.preview_widget is None:
self.tilt = 90
tilt_max = pkConfig.getint('arduino', 'max-tilt')
tilt_min = pkConfig.getint('arduino', 'min-tilt')
def on_touch_move(widget, touch):
if widget.collide_point(touch.x, touch.y):
self.tilt += touch.dpos[1] / 5
if self.tilt < tilt_min:
self.tilt = tilt_min
if self.tilt > tilt_max:
self.tilt = tilt_max
value = int(round(self.tilt, 0))
self.arduino_handler.set_camera_tilt(value)
self.preview_widget = Image(texture=texture, nocache=True)
self.preview_widget.bind(on_touch_move=on_touch_move)
self.preview_widget.allow_stretch = True
self.preview_widget.x = 0
self.preview_widget.y = -2000
self.view.add_widget(self.preview_widget)
else:
self.preview_widget.texture = texture
def update_preview(self, *args, **kwargs):
try:
imdata = self.preview_handler.queue.get(False)
except queue.Empty:
return
# textures must be created in the main thread;
# this is a limitation in pygame
texture = Texture.create_from_data(imdata)
if self.preview_widget is None:
tilt_max = pkConfig.getint('arduino', 'max-tilt')
tilt_min = pkConfig.getint('arduino', 'min-tilt')
def on_touch_move(widget, touch):
if widget.collide_point(touch.x, touch.y):
self.tilt += touch.dpos[1] / 5
if self.tilt < tilt_min:
self.tilt = tilt_min
if self.tilt > tilt_max:
self.tilt = tilt_max
value = int(round(self.tilt, 0))
self.arduino_handler.set_camera_tilt(value)
self.preview_widget = Image(texture=texture, nocache=True)
self.preview_widget.bind(on_touch_move=on_touch_move)
self.preview_widget.allow_stretch = True
self.preview_widget.size_hint = None, None
self.preview_widget.size = (1280, 1024)
self.preview_widget.x = (1280 / 2) - (self.preview_widget.width / 2)
self.preview_widget.y = -self.preview_widget.height
self.layout.add_widget(self.preview_widget)
else:
self.preview_widget.texture = texture
def TextureFromPyImage(pyImg):
raw = pyImg.tostring()
width, height = pyImg.size
imdata = ImageData(width, height, 'rgb', raw)
texture = Texture.create_from_data(imdata)
texture.flip_vertical()
return texture
def redisplay(self, root):
if self.result.code == preview_thread.COMPLETE:
root.cols = self.result.columnCount
while len(root.children) > len(self.result.data):
root.remove_widget(root.children[-1])
while len(root.children) < len(self.result.data):
root.add_widget(Image())
for i in xrange(0, len(self.result.data)):
current = root.children[i]
if len(self.textures) <= i:
self.textures.append(
Texture.create_from_data(self.result.data[i]))
self.textures[i].flip_vertical()
else:
self.textures[i].blit_data(self.result.data[i])
current.texture = None
current.texture = self.textures[i]
current.size_hint = (1.0 * self.result.sizes[i][0] /
self.result.width,
1.0 * self.result.sizes[i][1] /
self.result.height)
root.width = root.height * self.result.width / self.result.height
#root.height = root.width * self.result.height / self.result.width
else:
root.clear_widgets()
def plt_to_image():
buf = StringIO()
plt.savefig(buf, format='png', dpi=400)
buf.seek(0)
imgdata = ImageLoaderPIL(buf)._data[0]
t = Texture.create_from_data(imgdata)
# for some reason image is loaded upside-down
t.flip_vertical()
return t
def create_preview_texture(self, initial_data):
texture = Texture.create_from_data(initial_data)
# add_reload_observer is required for loading texture info
# after the openGL context is lost and images need to be reloaded
# currently, losing opengl context is not tested
texture.add_reload_observer(self.update_texture)
texture.flip_vertical()
texture.flip_horizontal()
return texture
def textureFromPyImage(pyImg):
# Suspect this has to be called in the OpenGL event loop which
# is bound to slow us down.
raw = pyImg.tostring()
width, height = pyImg.size
print width, height
imdata = ImageData(width, height, 'rgb', raw)
texture = Texture.create_from_data(imdata)
texture.flip_vertical()
return texture
def textureFromPyImage(pyImg):
# Suspect this has to be called in the OpenGL event loop which
# is bound to slow us down.
raw = pyImg.tostring()
width, height = pyImg.size
print width, height
imdata = ImageData(width, height, 'rgb', raw)
texture = Texture.create_from_data(imdata)
texture.flip_vertical()
return texture
def SetImageInWidget(self, image):
if self.fbo is None:
self._init_fbo()
#show the image in kivy
if image.get_bytesize() == 3:
fmt = 'rgb'
elif image.get_bytesize() == 4:
fmt = 'rgba'
data = pygame.image.tostring(image, fmt.upper(), True)
k_im_data = ImageData(image.get_width(), image.get_height(), fmt, data)
imageTexture = Texture.create_from_data(k_im_data)
self.canvas.clear()
#Modify size and offset to avoid image distortion
orig_h = image.get_height()
orig_w = image.get_width()
wid_h = self.size[1]
wid_w = self.size[0]
print self.size
s_size = (0,0)
offset = (0,0)
orig_ratio = float(orig_w)/orig_h
wid_ratio = float(wid_w)/wid_h
if wid_ratio > orig_ratio: #fix height
s_size = (int(wid_h*orig_ratio), wid_h)
offset = ((wid_w - s_size[0])/2, 0)
self.fbo_scale = float(orig_h)/wid_h #scale factor to recover the original image size
else: #fix width
s_size = (wid_w, int(wid_w/orig_ratio))
offset = (0, (wid_h - s_size[1])/2)
self.fbo_scale = float(orig_w)/wid_w #scale factor to recover the original image size
self.fbo_pos = (self.pos[0] + offset[0], self.pos[1] + offset[1])
#self.fbo_pos = (self.pos[0] + offset[0]*self.fbo_scale, self.pos[1] + offset[1]*self.fbo_scale)
self.fbo_size = s_size
self.fbo_real_size = (orig_w, orig_h)
#self.canvas.add(Rectangle(texture=imageTexture, pos = self.fbo_pos,
# size=self.fbo_size))
self._init_fbo() #reload the fbo
#here we are drawing the sketches directly over the background image
#TODO: (tomas) I'm not sure why this happens, but scaling the widget does not keep the background
with self.fbo:
#Rectangle(texture=imageTexture, pos = (0,0) ,size=self.fbo_size)
Rectangle(texture=imageTexture, pos = (0,0) ,size=self.fbo_real_size)
def redisplay(self, root):
if self.result.code == preview_thread.COMPLETE:
root.cols = self.result.columnCount
while len(root.children) > len(self.result.data):
root.remove_widget(root.children[-1])
while len(root.children) < len(self.result.data):
root.add_widget(Image())
for i in xrange(0, len(self.result.data)):
current = root.children[i]
if len(self.textures) <= i:
self.textures.append(Texture.create_from_data(self.result.data[i]))
self.textures[i].flip_vertical()
else:
self.textures[i].blit_data(self.result.data[i])
current.texture = None
current.texture = self.textures[i]
current.size_hint = (1.0*self.result.sizes[i][0]/self.result.width,
1.0*self.result.sizes[i][1]/self.result.height)
root.width = root.height * self.result.width / self.result.height
#root.height = root.width * self.result.height / self.result.width
else:
root.clear_widgets()
def render(self):
self.image_surface.fill(self.background_colour)
for element in self.element_list:
element.update_condition(self.weather_underground, self.sun_almanac, self.indoor_sensor)
element.render()
# Deal with any text alignments
for element in self.element_list:
if element.align_to_other is not None:
for e in self.element_list:
if e.element_name == element.align_to_other:
element.pos = (e.surface.get_width() + element.align_base_pos, element.pos[1])
# Blit the new surfaces
for element in self.element_list:
element.blit(self.image_surface)
# And import into kivy
buffer = pygame.image.tostring(self.image_surface, 'RGB', True)
imdata = ImageData(self.image_size[0], self.image_size[1], 'rgb', buffer)
self.image.texture = Texture.create_from_data(imdata)
self.update_birthdays()
def _real_render(self):
# use the lines to do the rendering !
self._render_begin()
r = self._render_text
# convert halign/valign to int, faster comparaison
av = {'top': 0, 'middle': 1, 'bottom': 2}[self.options['valign']]
ah = {'left': 0, 'center': 1, 'right': 2}[self.options['halign']]
y = 0
w, h = self._size
refs = self._refs
txt_height = sum(line[1] for line in self._lines)
for line in self._lines:
lh = line[1]
lw = line[0]
# horizontal alignement
if ah == 0:
x = 0
elif ah == 1:
x = int((w - lw) / 2)
else:
x = w - lw
# vertical alignement
if y == 0:
if av == 1:
y = int((h - txt_height) / 2)
elif av == 2:
y = h - (txt_height)
for pw, ph, part, options in line[2]:
self.options = options
r(part, x, y + (lh - ph) / 1.25)
# should we record refs ?
ref = options['_ref']
if ref is not None:
if not ref in refs:
refs[ref] = []
refs[ref].append((x, y, x + pw, y + ph))
#print 'render', repr(part), x, y, (lh, ph), options
x += pw
y += line[1]
# get data from provider
data = self._render_end()
assert (data)
# create texture is necessary
texture = self.texture
mipmap = self.options['mipmap']
if texture is None or \
self.width != texture.width or \
self.height != texture.height:
texture = Texture.create_from_data(data, mipmap=mipmap)
data = None
texture.flip_vertical()
texture.add_reload_observer(self._texture_refresh)
self.texture = texture
# update texture
# If the text is 1px width, usually, the data is black.
# Don't blit that kind of data, otherwise, you have a little black bar.
if data is not None and data.width > 1:
texture.blit_data(data)
def render(self, real=False):
'''Return a tuple(width, height) to create the image
with the user constraints.
2 differents methods are used:
* if user don't set width, splitting line
and calculate max width + height
* if user set a width, blit per glyph
'''
options = self.options
uw, uh = self.text_size
w, h = 0, 0
x, y = 0, 0
if real:
self._render_begin()
halign = options['halign']
valign = options['valign']
if valign == 'bottom':
y = self.height - self._internal_height
elif valign == 'middle':
y = int((self.height - self._internal_height) / 2)
else:
self._internal_height = 0
# no width specified, faster method
if uw is None:
for line in self.text.split('\n'):
lw, lh = self.get_extents(line)
if real:
x = 0
if halign == 'center':
x = int((self.width - lw) / 2.)
elif halign == 'right':
x = int(self.width - lw)
self._render_text(line, x, y)
y += int(lh)
else:
w = max(w, int(lw))
self._internal_height += int(lh)
h = self._internal_height if uh is None else uh
# constraint
else:
# precalculate id/name
if not self.fontid in self._cache_glyphs:
self._cache_glyphs[self.fontid] = {}
cache = self._cache_glyphs[self.fontid]
if not real:
# verify that each glyph have size
glyphs = list(set(self.text)) + ['.']
for glyph in glyphs:
if not glyph in cache:
cache[glyph] = self.get_extents(glyph)
# Shorten the text that we actually display
text = self.text
if options['shorten'] and self.get_extents(text)[0] > uw:
text = self.shorten(text)
# first, split lines
glyphs = []
lines = []
lw = lh = 0
for word in re.split(r'( |\n)', text):
# calculate the word width
ww, wh = 0, 0
for glyph in word:
gw, gh = cache[glyph]
ww += gw
wh = max(gh, wh)
# is the word fit on the uw ?
if ww > uw:
lines.append(((ww, wh), word))
lw = lh = x = 0
continue
# get the maximum height for this line
lh = max(wh, lh)
# is the word fit on the line ?
if (word == '\n' or x + ww > uw) and lw != 0:
# no, push actuals glyph
lines.append(((lw, lh), glyphs))
glyphs = []
# reset size
lw = lh = x = 0
# new line ? don't render
if word == '\n' or word == ' ':
continue
# advance the width
lw += ww
x += ww
lh = max(wh, lh)
glyphs += list(word)
# got some char left ?
if lw != 0:
lines.append(((lw, lh), glyphs))
if not real:
self._internal_height = sum([size[1] for size, glyphs in lines])
h = self._internal_height if uh is None else uh
w = uw
else:
# really render now.
for size, glyphs in lines:
x = 0
if halign == 'center':
x = int((self.width - size[0]) / 2.)
elif halign == 'right':
x = int(self.width - size[0])
for glyph in glyphs:
lw, lh = cache[glyph]
if glyph != '\n':
self._render_text(glyph, x, y)
x += lw
y += size[1]
if not real:
# was only the first pass
# return with/height
w = int(max(w, 1))
h = int(max(h, 1))
return w, h
# get data from provider
data = self._render_end()
assert(data)
# if data width is too tiny, just create texture, don't really render!
if data.width <= 1:
if self.texture:
self.texture = None
return
# create texture is necessary
texture = self.texture
mipmap = options['mipmap']
if texture is None:
if data is None:
if platform() in ('android', 'ios'):
colorfmt = 'rgba'
else:
colorfmt = 'luminance_alpha'
texture = Texture.create(
size=self.size, colorfmt=colorfmt,
mipmap=mipmap)
else:
texture = Texture.create_from_data(data, mipmap=mipmap)
texture.flip_vertical()
elif self.width != texture.width or self.height != texture.height:
if data is None:
texture = Texture.create(size=self.size, mipmap=mipmap)
else:
texture = Texture.create_from_data(data, mipmap=mipmap)
texture.flip_vertical()
'''
# Avoid that for the moment.
# The thing is, as soon as we got a region, the blitting is not going in
# the right position cause of previous flip_vertical
# In addition, as soon as we have a region, we are not testing from the
# original texture. Mean we'll have region of region of region.
# Take more time to implement a fix for it, if it's needed.
else:
print 'get region ??', self, self.width, self.height
texture = texture.get_region(
0, 0, self.width, self.height)
'''
self.texture = texture
# update texture
# If the text is 1px width, usually, the data is black.
# Don't blit that kind of data, otherwise, you have a little black bar.
if data is not None and data.width > 1:
texture.blit_data(data)
def getKivyTexture(img): buffer = tostring(img.getPGSurface(),'RGB',True) # buffer = img.toString() imdata = ImageData(img.width, img.height, 'rgb', buffer) tex = Texture.create_from_data(imdata) return tex
def _real_render(self):
# use the lines to do the rendering !
self._render_begin()
r = self._render_text
# convert halign/valign to int, faster comparison
av = {'top': 0, 'middle': 1, 'bottom': 2}[self.options['valign']]
ah = {'left': 0, 'center': 1, 'right': 2,
'justify': 3,}[self.options['halign']]
y = 0
w, h = self._size
refs = self._refs
_lines = self._lines
txt_height = sum(line[1] for line in _lines)
for line in _lines:
lh = line[1]
lw = line[0]
last_line = line[2]
first_line = line[3]
# horizontal alignement
if ah in (0, 3):
# left
x = 0
elif ah == 1:
# center
x = int((w - lw) / 2)
else:
x = w - lw
# vertical alignment
if y == 0:
if av == 1:
# center
y = int((h - txt_height) / 2)
elif av == 2:
# bottom
y = h - (txt_height)
# justification
just_space = 0
first_space = 0
if ah > 2:
# justified
if line[4] and not last_line:
last_word = line[4][-1][2]
x = first_space = last_space = space_width = _spaces = 0
for pw, ph, word, options in line[4]:
_spaces += 1 if word == ' ' else 0
if word == ' ':
last_space = 1
space_width = pw
if line[4][0][2][0] == ' ':
first_space = 1
space_width += pw
_spaces -= last_space + first_space
# divide left over space between `spaces`
if _spaces:
just_space = (((w - lw + space_width) * 1.)
/(_spaces*1.))
for pw, ph, part, options in line[4]:
self.options = options
if not first_line and first_space:
first_line = 1
continue
if part == ' ':
x += just_space
r(part, x, y + (lh - ph) / 1.25)
# should we record refs ?
ref = options['_ref']
if ref is not None:
if not ref in refs:
refs[ref] = []
refs[ref].append((x, y, x + pw, y + ph))
#print 'render', repr(part), x, y, (lh, ph), options
x += pw
y += line[1]
# get data from provider
data = self._render_end()
assert(data)
# create texture is necessary
texture = self.texture
mipmap = self.options['mipmap']
if texture is None or \
self.width != texture.width or \
self.height != texture.height:
texture = Texture.create_from_data(data, mipmap=mipmap)
data = None
texture.flip_vertical()
texture.add_reload_observer(self._texture_refresh)
self.texture = texture
# update texture
# If the text is 1px width, usually, the data is black.
# Don't blit that kind of data, otherwise, you have a little black bar.
if data is not None and data.width > 1:
texture.blit_data(data)
def getKivyTexture(img):
buffer = tostring(img.getPGSurface(), 'RGB', True)
# buffer = img.toString()
imdata = ImageData(img.width, img.height, 'rgb', buffer)
tex = Texture.create_from_data(imdata)
return tex
def _real_render(self):
# use the lines to do the rendering !
self._render_begin()
r = self._render_text
# convert halign/valign to int, faster comparaison
av = {'top': 0, 'middle': 1, 'bottom': 2}[self.options['valign']]
ah = {'left': 0, 'center': 1, 'right': 2}[self.options['halign']]
y = 0
w, h = self._size
refs = self._refs
no_of_lines = len(self._lines)
for line in self._lines:
lh = line[1]
lw = line[0]
# horizontal alignement
if ah == 0:
x = 0
elif ah == 1:
x = int((w - lw) / 2)
else:
x = w - lw
# vertical alignement
if y == 0:
if av == 1:
y = int((h - (lh*no_of_lines))/2)
elif av == 2:
y = h - (lh*(no_of_lines))
for pw, ph, part, options in line[2]:
self.options = options
r(part, x, y + (lh - ph) / 1.25)
# should we record refs ?
ref = options['_ref']
if ref is not None:
if not ref in refs:
refs[ref] = []
refs[ref].append((x, y, x + pw, y + ph))
#print 'render', repr(part), x, y, (lh, ph), options
x += pw
y += line[1]
# get data from provider
data = self._render_end()
assert(data)
# create texture is necessary
texture = self.texture
mipmap = self.options['mipmap']
if texture is None:
if data is None:
if platform() in ('android', 'ios'):
colorfmt = 'rgba'
else:
colorfmt = 'luminance_alpha'
texture = Texture.create(
size=self.size, colorfmt=colorfmt,
mipmap=mipmap)
else:
texture = Texture.create_from_data(data, mipmap=mipmap)
texture.flip_vertical()
elif self.width != texture.width or self.height != texture.height:
if data is None:
texture = Texture.create(size=self.size, mipmap=mipmap)
else:
texture = Texture.create_from_data(data, mipmap=mipmap)
texture.flip_vertical()
# update texture
self.texture = texture
self.texture.blit_data(data)
def render_page(self, index, zoom=1):
w, h = map(int, self.get_page_size(index))
w, h = map(lambda x: x * zoom, (w, h))
print 'render1', index
page = self.l_poppler.poppler_document_get_page(self._doc, index)
print 'render2', page
assert (page is not None)
# use cairo ?
if self.l_cairo is not None:
# create a cairo surface
# first argument 0 is ARGB32
surface = self.l_cairo.cairo_image_surface_create(0, w, h)
assert (surface is not None)
# create cairo context
context = self.l_cairo.cairo_create(surface)
assert (context is not None)
# apply zoom
print 'apply scale'
self.l_cairo.cairo_scale(context, c_double(zoom), c_double(zoom))
# render to cairo
print 'render page'
self.l_poppler.poppler_page_render(page, context)
# dump cairo to texture
print 'render to texture'
data = self.l_cairo.cairo_image_surface_get_data(surface)
print 'got', type(data), data
size = int(4 * w * h)
print 'create string buffer', size
buf = create_string_buffer(size)
memmove(buf, data, size)
# release cairo
print 'destroy surface'
self.l_cairo.cairo_surface_destroy(surface)
print 'destroy context'
self.l_cairo.cairo_destroy(context)
print 'done!'
# use gdk ?
else:
# 1: GDK_COLORSPACE_RGB (0)
# 2: has_alpha (1)
# 3: bit per samples
print 'render3'
self.l_gdk.gdk_pixbuf_new.restype = c_void_p
surface = self.l_gdk.gdk_pixbuf_new(0, 1, 8, w, h)
print 'render4'
assert (surface is not None)
# render to pixbuf (fix 6 arg)
print 'render5'
self.l_poppler.poppler_page_render_to_pixbuf.argtypes = [
c_void_p, c_int, c_int, c_int, c_int, c_double, c_int, c_void_p
]
self.l_poppler.poppler_page_render_to_pixbuf(
page, 0, 0, w, h, zoom, 0, surface)
print 'render6'
# get data
class GdkPixdata(Structure):
_fields_ = [('magic', c_int), ('length', c_int),
('pixdata_type', c_int), ('rowstride', c_int),
('width', c_int), ('height', c_int),
('pixel_data', c_void_p)]
pixdata = (GdkPixdata)()
# get a pixdata
print 'render7'
self.l_gdk.gdk_pixdata_from_pixbuf.argtypes = [
c_void_p, c_void_p, c_int
]
self.l_gdk.gdk_pixdata_from_pixbuf(byref(pixdata), surface, 0)
print 'render8'
# convert to buffer
size = int(4 * w * h)
buf = create_string_buffer(size)
memmove(buf, pixdata.pixel_data, size)
print 'render9'
# unref
self.l_gobject.g_object_unref(surface)
print 'render10'
# picking only RGB
print 'create texture'
im = ImageData(w, h, 'bgra', buf.raw)
texture = Texture.create_from_data(im, mipmap=True)
print 'done !'
texture.flip_vertical()
return texture
def _real_render(self):
# use the lines to do the rendering !
self._render_begin()
r = self._render_text
# convert halign/valign to int, faster comparison
av = {"top": 0, "middle": 1, "bottom": 2}[self.options["valign"]]
ah = {"left": 0, "center": 1, "right": 2, "justify": 3}[self.options["halign"]]
y = 0
w, h = self._size
refs = self._refs
_lines = self._lines
txt_height = sum(line[1] for line in _lines)
for line in _lines:
lh = line[1]
lw = line[0]
last_line = line[2]
first_line = line[3]
# horizontal alignement
if ah in (0, 3):
# left
x = 0
elif ah == 1:
# center
x = int((w - lw) / 2)
else:
x = w - lw
# vertical alignment
if y == 0:
if av == 1:
# center
y = int((h - txt_height) / 2)
elif av == 2:
# bottom
y = h - (txt_height)
# justification
just_space = 0
first_space = 0
if ah > 2:
# justified
if line[4] and not last_line:
last_word = line[4][-1][2]
x = first_space = last_space = space_width = _spaces = 0
for pw, ph, word, options in line[4]:
_spaces += 1 if word == " " else 0
if word == " ":
last_space = 1
space_width = pw
if line[4][0][2][0] == " ":
first_space = 1
space_width += pw
_spaces -= last_space + first_space
# divide left over space between `spaces`
if _spaces:
just_space = ((w - lw + space_width) * 1.0) / (_spaces * 1.0)
# previous part height/pos = 0
psp = pph = 0
for pw, ph, part, options in line[4]:
self.options = options
if not first_line and first_space:
first_line = 1
continue
if part == " ":
x += just_space
# calculate sub/super script pos
if options["script"] == "superscript":
script_pos = max(0, psp if psp else self.get_descent())
psp = script_pos
pph = ph
elif options["script"] == "subscript":
script_pos = min(lh - ph, ((psp + pph) - ph) if pph else (lh - ph))
pph = ph
psp = script_pos
else:
script_pos = (lh - ph) / 1.25
psp = pph = 0
r(part, x, y + script_pos)
# should we record refs ?
ref = options["_ref"]
if ref is not None:
if not ref in refs:
refs[ref] = []
refs[ref].append((x, y, x + pw, y + ph))
x += pw
y += line[1]
# get data from provider
data = self._render_end()
assert data
# create texture is necessary
texture = self.texture
mipmap = self.options["mipmap"]
if texture is None or self.width != texture.width or self.height != texture.height:
texture = Texture.create_from_data(data, mipmap=mipmap)
data = None
texture.flip_vertical()
texture.add_reload_observer(self._texture_refresh)
self.texture = texture
# update texture
# If the text is 1px width, usually, the data is black.
# Don't blit that kind of data, otherwise, you have a little black bar.
if data is not None and data.width > 1:
texture.blit_data(data)
def generate_texture(self, data, size, mode, mipmap=False):
idata = ImageData(size[0], size[1], mode, data)
return Texture.create_from_data(idata, mipmap)
def render(self, real=False):
'''Return a tuple(width, height) to create the image
with the user constraints.
2 differents methods are used:
* if user don't set width, splitting line
and calculate max width + height
* if user set a width, blit per glyph
'''
options = self.options
render_text = self._render_text
get_extents = self.get_extents
uw, uh = self.text_size
w, h = 0, 0
x, y = 0, 0
if real:
self._render_begin()
halign = options['halign']
valign = options['valign']
if valign == 'bottom':
y = self.height - self._internal_height
elif valign == 'middle':
y = int((self.height - self._internal_height) / 2)
else:
self._internal_height = 0
# no width specified, faster method
if uw is None:
for line in self.text.split('\n'):
lw, lh = get_extents(line)
lh = lh * options['line_height']
if real:
x = 0
if halign == 'center':
x = int((self.width - lw) / 2.)
elif halign == 'right':
x = int(self.width - lw)
if len(line):
render_text(line, x, y)
y += int(lh)
else:
w = max(w, int(lw))
self._internal_height += int(lh)
h = self._internal_height if uh is None else uh
# constraint
else:
# precalculate id/name
if not self.fontid in self._cache_glyphs:
self._cache_glyphs[self.fontid] = {}
cache = self._cache_glyphs[self.fontid]
if not real:
# verify that each glyph have size
glyphs = list(set(self.text)) + ['.']
for glyph in glyphs:
if not glyph in cache:
cache[glyph] = get_extents(glyph)
# Shorten the text that we actually display
text = self.text
last_word_width = get_extents(text[text.rstrip().rfind(' '):])[0]
if (options['shorten'] and get_extents(text)[0] >
uw - last_word_width):
text = self.shorten(text)
# first, split lines
glyphs = []
lines = []
lw = lh = 0
for word in re.split(r'( |\n)', text):
# calculate the word width
ww, wh = 0, 0
if word == '':
ww, wh = get_extents(' ')
for glyph in word:
gw, gh = cache[glyph]
ww += gw
wh = max(gh, wh)
wh = wh * options['line_height']
# is the word fit on the uw ?
if ww > uw:
lines.append(((ww, wh), word))
lw = lh = x = 0
continue
# get the maximum height for this line
lh = max(wh, lh)
# is the word fit on the line ?
if (word == '\n' or x + ww > uw) and lw != 0:
# no, push actuals glyph
lines.append(((lw, lh), glyphs))
glyphs = []
# reset size
lw = lh = x = 0
# new line ? don't render
if word == '\n' or word == ' ':
continue
# advance the width
lw += ww
x += ww
lh = max(wh, lh)
glyphs += list(word)
# got some char left ?
if lw != 0:
lines.append(((lw, lh), glyphs))
if not real:
self._internal_height = sum([size[1] for size, glyphs in lines])
ll_h = lines[-1][0][1]
lh_offset = ll_h - (ll_h / self.options['line_height'])
self._internal_height = self._internal_height - lh_offset
h = self._internal_height if uh is None else uh
w = uw
else:
# really render now.
for size, glyphs in lines:
x = 0
if halign == 'center':
x = int((self.width - size[0]) / 2.)
elif halign == 'right':
x = int(self.width - size[0])
for glyph in glyphs:
lw, lh = cache[glyph]
if glyph != ' ' and glyph != '\n':
render_text(glyph, x, y)
x += lw
y += size[1]
if not real:
# was only the first pass
# return with/height
w = int(max(w, 1))
h = int(max(h, 1))
return w, h
# get data from provider
data = self._render_end()
assert(data)
# if data width is too tiny, just create texture, don't really render!
if data.width <= 1:
if self.texture:
self.texture = None
return
# create texture is necessary
texture = self.texture
mipmap = options['mipmap']
if texture is None or \
self.width != texture.width or \
self.height != texture.height:
texture = Texture.create_from_data(data, mipmap=mipmap)
data = None
texture.flip_vertical()
texture.add_reload_observer(self._texture_refresh)
self.texture = texture
# update texture
# If the text is 1px width, usually, the data is black.
# Don't blit that kind of data, otherwise, you have a little black bar.
if data is not None and data.width > 1:
texture.blit_data(data)
def _real_render(self):
# use the lines to do the rendering !
self._render_begin()
r = self._render_text
# convert halign/valign to int, faster comparaison
#av = {'top': 0, 'middle': 1, 'bottom': 2}[self.options['valign']]
ah = {'left': 0, 'center': 1, 'right': 2}[self.options['halign']]
y = 0
w, h = self._size
refs = self._refs
for line in self._lines:
lh = line[1]
# horizontal alignement
if ah == 0:
x = 0
elif ah == 1:
x = int((w - line[0]) / 2)
else:
x = w - line[0]
for pw, ph, part, options in line[2]:
self.options = options
r(part, x, y + (lh - ph) / 1.25)
# should we record refs ?
ref = options['_ref']
if ref is not None:
if not ref in refs:
refs[ref] = []
refs[ref].append((x, y, x + pw, y + ph))
#print 'render', repr(part), x, y, (lh, ph), options
x += pw
y += line[1]
# get data from provider
data = self._render_end()
assert(data)
# create texture is necessary
texture = self.texture
mipmap = self.options['mipmap']
if texture is None:
if data is None:
if platform() in ('android', 'ios'):
colorfmt = 'rgba'
else:
colorfmt = 'luminance_alpha'
texture = Texture.create(
size=self.size, colorfmt=colorfmt,
mipmap=mipmap)
else:
texture = Texture.create_from_data(data, mipmap=mipmap)
texture.flip_vertical()
elif self.width != texture.width or self.height != texture.height:
if data is None:
texture = Texture.create(size=self.size, mipmap=mipmap)
else:
texture = Texture.create_from_data(data, mipmap=mipmap)
texture.flip_vertical()
# update texture
self.texture = texture
self.texture.blit_data(data)
def generate_texture(self, data, size, mode, mipmap=False):
idata = ImageData(size[0], size[1], mode, data)
return Texture.create_from_data(idata, mipmap)
def _update_preview(self, image):
self.ui.preview_image.texture = Texture.create_from_data(ImageData(image.size[0], image.size[1], image.mode.lower(), image.tobytes()))
def _update_preview(self, image):
self.ui.preview_image.texture = Texture.create_from_data(
ImageData(image.size[0], image.size[1], image.mode.lower(),
image.tobytes()))
def render_page(self, index, zoom=1):
w, h = map(int, self.get_page_size(index))
w, h = map(lambda x: x * zoom, (w, h))
print 'render1', index
page = self.l_poppler.poppler_document_get_page(self._doc, index)
print 'render2', page
assert( page is not None )
# use cairo ?
if self.l_cairo is not None:
# create a cairo surface
# first argument 0 is ARGB32
surface = self.l_cairo.cairo_image_surface_create(0, w, h)
assert( surface is not None )
# create cairo context
context = self.l_cairo.cairo_create(surface)
assert( context is not None )
# apply zoom
print 'apply scale'
self.l_cairo.cairo_scale(context, c_double(zoom), c_double(zoom))
# render to cairo
print 'render page'
self.l_poppler.poppler_page_render(page, context)
# dump cairo to texture
print 'render to texture'
data = self.l_cairo.cairo_image_surface_get_data(surface)
print 'got', type(data), data
size = int(4 * w * h)
print 'create string buffer', size
buf = create_string_buffer(size)
memmove(buf, data, size)
# release cairo
print 'destroy surface'
self.l_cairo.cairo_surface_destroy(surface)
print 'destroy context'
self.l_cairo.cairo_destroy(context)
print 'done!'
# use gdk ?
else:
# 1: GDK_COLORSPACE_RGB (0)
# 2: has_alpha (1)
# 3: bit per samples
print 'render3'
self.l_gdk.gdk_pixbuf_new.restype = c_void_p
surface = self.l_gdk.gdk_pixbuf_new(0, 1, 8, w, h)
print 'render4'
assert( surface is not None )
# render to pixbuf (fix 6 arg)
print 'render5'
self.l_poppler.poppler_page_render_to_pixbuf.argtypes = [
c_void_p, c_int, c_int, c_int, c_int, c_double, c_int, c_void_p]
self.l_poppler.poppler_page_render_to_pixbuf(page, 0, 0,
w, h, zoom, 0, surface)
print 'render6'
# get data
class GdkPixdata(Structure):
_fields_ = [('magic', c_int),
('length', c_int),
('pixdata_type', c_int),
('rowstride', c_int),
('width', c_int),
('height', c_int),
('pixel_data', c_void_p)]
pixdata = (GdkPixdata)()
# get a pixdata
print 'render7'
self.l_gdk.gdk_pixdata_from_pixbuf.argtypes = [
c_void_p, c_void_p, c_int]
self.l_gdk.gdk_pixdata_from_pixbuf(byref(pixdata), surface, 0)
print 'render8'
# convert to buffer
size = int(4 * w * h)
buf = create_string_buffer(size)
memmove(buf, pixdata.pixel_data, size)
print 'render9'
# unref
self.l_gobject.g_object_unref(surface)
print 'render10'
# picking only RGB
print 'create texture'
im = ImageData(w, h, 'bgra', buf.raw)
texture = Texture.create_from_data(im, mipmap=True)
print 'done !'
texture.flip_vertical()
return texture
def render(self, real=False):
'''Return a tuple(width, height) to create the image
with the user constraints.
2 differents methods are used:
* if user don't set width, splitting line
and calculate max width + height
* if user set a width, blit per glyph
'''
options = self.options
render_text = self._render_text
get_extents = self.get_extents
uw, uh = self.text_size
w, h = 0, 0
x, y = 0, 0
if real:
self._render_begin()
halign = options['halign']
valign = options['valign']
if valign == 'bottom':
y = self.height - self._internal_height
elif valign == 'middle':
y = int((self.height - self._internal_height) / 2)
else:
self._internal_height = 0
# no width specified, faster method
if uw is None:
for line in self.text.split('\n'):
lw, lh = get_extents(line)
if real:
x = 0
if halign == 'center':
x = int((self.width - lw) / 2.)
elif halign == 'right':
x = int(self.width - lw)
if len(line):
render_text(line, x, y)
y += int(lh)
else:
w = max(w, int(lw))
self._internal_height += int(lh)
h = self._internal_height if uh is None else uh
# constraint
else:
# precalculate id/name
if not self.fontid in self._cache_glyphs:
self._cache_glyphs[self.fontid] = {}
cache = self._cache_glyphs[self.fontid]
if not real:
# verify that each glyph have size
glyphs = list(set(self.text)) + ['.']
for glyph in glyphs:
if not glyph in cache:
cache[glyph] = get_extents(glyph)
# Shorten the text that we actually display
text = self.text
if options['shorten'] and get_extents(text)[0] > uw:
text = self.shorten(text)
# first, split lines
glyphs = []
lines = []
lw = lh = 0
for word in re.split(r'( |\n)', text):
# calculate the word width
ww, wh = 0, 0
if word == '':
ww, wh = get_extents(' ')
for glyph in word:
gw, gh = cache[glyph]
ww += gw
wh = max(gh, wh)
# is the word fit on the uw ?
if ww > uw:
lines.append(((ww, wh), word))
lw = lh = x = 0
continue
# get the maximum height for this line
lh = max(wh, lh)
# is the word fit on the line ?
if (word == '\n' or x + ww > uw) and lw != 0:
# no, push actuals glyph
lines.append(((lw, lh), glyphs))
glyphs = []
# reset size
lw = lh = x = 0
# new line ? don't render
if word == '\n' or word == ' ':
continue
# advance the width
lw += ww
x += ww
lh = max(wh, lh)
glyphs += list(word)
# got some char left ?
if lw != 0:
lines.append(((lw, lh), glyphs))
if not real:
self._internal_height = sum([size[1] for size, glyphs in lines])
h = self._internal_height if uh is None else uh
w = uw
else:
# really render now.
for size, glyphs in lines:
x = 0
if halign == 'center':
x = int((self.width - size[0]) / 2.)
elif halign == 'right':
x = int(self.width - size[0])
for glyph in glyphs:
lw, lh = cache[glyph]
if glyph != ' ' and glyph != '\n':
render_text(glyph, x, y)
x += lw
y += size[1]
if not real:
# was only the first pass
# return with/height
w = int(max(w, 1))
h = int(max(h, 1))
return w, h
# get data from provider
data = self._render_end()
assert(data)
# if data width is too tiny, just create texture, don't really render!
if data.width <= 1:
if self.texture:
self.texture = None
return
# create texture is necessary
texture = self.texture
mipmap = options['mipmap']
if texture is None or \
self.width != texture.width or \
self.height != texture.height:
texture = Texture.create_from_data(data, mipmap=mipmap)
data = None
texture.flip_vertical()
texture.add_reload_observer(self._texture_refresh)
self.texture = texture
# update texture
# If the text is 1px width, usually, the data is black.
# Don't blit that kind of data, otherwise, you have a little black bar.
if data is not None and data.width > 1:
texture.blit_data(data)
def _real_render(self):
# use the lines to do the rendering !
self._render_begin()
r = self._render_text
# convert halign/valign to int, faster comparaison
# av = {'top': 0, 'middle': 1, 'bottom': 2}[self.options['valign']]
ah = {"left": 0, "center": 1, "right": 2}[self.options["halign"]]
y = 0
w, h = self._size
refs = self._refs
for line in self._lines:
lh = line[1]
# horizontal alignement
if ah == 0:
x = 0
elif ah == 1:
x = int((w - line[0]) / 2)
else:
x = w - line[0]
for pw, ph, part, options in line[2]:
self.options = options
r(part, x, y + (lh - ph) / 1.25)
# should we record refs ?
ref = options["_ref"]
if ref is not None:
if not ref in refs:
refs[ref] = []
refs[ref].append((x, y, x + pw, y + ph))
# print 'render', repr(part), x, y, (lh, ph), options
x += pw
y += line[1]
# get data from provider
data = self._render_end()
assert data
# create texture is necessary
texture = self.texture
mipmap = self.options["mipmap"]
if texture is None:
if data is None:
if platform() in ("android", "ios"):
colorfmt = "rgba"
else:
colorfmt = "luminance_alpha"
texture = Texture.create(size=self.size, colorfmt=colorfmt, mipmap=mipmap)
else:
texture = Texture.create_from_data(data, mipmap=mipmap)
texture.flip_vertical()
elif self.width != texture.width or self.height != texture.height:
if data is None:
texture = Texture.create(size=self.size, mipmap=mipmap)
else:
texture = Texture.create_from_data(data, mipmap=mipmap)
texture.flip_vertical()
# update texture
self.texture = texture
self.texture.blit_data(data)
def _real_render(self):
# use the lines to do the rendering !
self._render_begin()
r = self._render_text
# convert halign/valign to int, faster comparaison
av = {'top': 0, 'middle': 1, 'bottom': 2}[self.options['valign']]
ah = {'left': 0, 'center': 1, 'right': 2}[self.options['halign']]
y = 0
w, h = self._size
refs = self._refs
txt_height = sum(line[1] for line in self._lines)
for line in self._lines:
lh = line[1]
lw = line[0]
# horizontal alignement
if ah == 0:
x = 0
elif ah == 1:
x = int((w - lw) / 2)
else:
x = w - lw
# vertical alignement
if y == 0:
if av == 1:
y = int((h - txt_height) / 2)
elif av == 2:
y = h - (txt_height)
for pw, ph, part, options in line[2]:
self.options = options
r(part, x, y + (lh - ph) / 1.25)
# should we record refs ?
ref = options['_ref']
if ref is not None:
if not ref in refs:
refs[ref] = []
refs[ref].append((x, y, x + pw, y + ph))
#print 'render', repr(part), x, y, (lh, ph), options
x += pw
y += line[1]
# get data from provider
data = self._render_end()
assert(data)
# create texture is necessary
texture = self.texture
mipmap = self.options['mipmap']
if texture is None or \
self.width != texture.width or \
self.height != texture.height:
texture = Texture.create_from_data(data, mipmap=mipmap)
data = None
texture.flip_vertical()
texture.add_reload_observer(self._texture_refresh)
self.texture = texture
# update texture
# If the text is 1px width, usually, the data is black.
# Don't blit that kind of data, otherwise, you have a little black bar.
if data is not None and data.width > 1:
texture.blit_data(data)
def render(self, real=False):
'''Return a tuple(width, height) to create the image
with the user constraints.
2 differents methods are used:
* if user don't set width, splitting line
and calculate max width + height
* if user set a width, blit per glyph
'''
options = self.options
uw, uh = self.text_size
w, h = 0, 0
x, y = 0, 0
if real:
self._render_begin()
halign = options['halign']
valign = options['valign']
if valign == 'bottom':
y = self.height - self._internal_height
elif valign == 'middle':
y = int((self.height - self._internal_height) / 2)
else:
self._internal_height = 0
# no width specified, faster method
if uw is None:
for line in self.text.split('\n'):
lw, lh = self.get_extents(line)
if real:
x = 0
if halign == 'center':
x = int((self.width - lw) / 2.)
elif halign == 'right':
x = int(self.width - lw)
self._render_text(line, x, y)
y += int(lh)
else:
w = max(w, int(lw))
self._internal_height += int(lh)
h = self._internal_height if uh is None else uh
# constraint
else:
# precalculate id/name
if not self.fontid in self._cache_glyphs:
self._cache_glyphs[self.fontid] = {}
cache = self._cache_glyphs[self.fontid]
if not real:
# verify that each glyph have size
glyphs = list(set(self.text)) + ['.']
for glyph in glyphs:
if not glyph in cache:
cache[glyph] = self.get_extents(glyph)
# Shorten the text that we actually display
text = self.text
if options['shorten'] and self.get_extents(text)[0] > uw:
text = self.shorten(text)
# first, split lines
glyphs = []
lines = []
lw = lh = 0
for word in re.split(r'( |\n)', text):
# calculate the word width
ww, wh = 0, 0
for glyph in word:
gw, gh = cache[glyph]
ww += gw
wh = max(gh, wh)
# is the word fit on the uw ?
if ww > uw:
lines.append(((ww, wh), word))
lw = lh = x = 0
continue
# get the maximum height for this line
lh = max(wh, lh)
# is the word fit on the line ?
if (word == '\n' or x + ww > uw) and lw != 0:
# no, push actuals glyph
lines.append(((lw, lh), glyphs))
glyphs = []
# reset size
lw = lh = x = 0
# new line ? don't render
if word == '\n' or word == ' ':
continue
# advance the width
lw += ww
x += ww
lh = max(wh, lh)
glyphs += list(word)
# got some char left ?
if lw != 0:
lines.append(((lw, lh), glyphs))
if not real:
self._internal_height = sum(
[size[1] for size, glyphs in lines])
h = self._internal_height if uh is None else uh
w = uw
else:
# really render now.
for size, glyphs in lines:
x = 0
if halign == 'center':
x = int((self.width - size[0]) / 2.)
elif halign == 'right':
x = int(self.width - size[0])
for glyph in glyphs:
lw, lh = cache[glyph]
if glyph != '\n':
self._render_text(glyph, x, y)
x += lw
y += size[1]
if not real:
# was only the first pass
# return with/height
w = int(max(w, 1))
h = int(max(h, 1))
return w, h
# get data from provider
data = self._render_end()
assert (data)
# if data width is too tiny, just create texture, don't really render!
if data.width <= 1:
if self.texture:
self.texture = None
return
# create texture is necessary
texture = self.texture
mipmap = options['mipmap']
if texture is None:
if data is None:
texture = Texture.create(size=self.size,
colorfmt='luminance_alpha',
mipmap=mipmap)
else:
texture = Texture.create_from_data(data, mipmap=mipmap)
texture.flip_vertical()
elif self.width != texture.width or self.height != texture.height:
if data is None:
texture = Texture.create(size=self.size, mipmap=mipmap)
else:
texture = Texture.create_from_data(data, mipmap=mipmap)
texture.flip_vertical()
'''
# Avoid that for the moment.
# The thing is, as soon as we got a region, the blitting is not going in
# the right position cause of previous flip_vertical
# In addition, as soon as we have a region, we are not testing from the
# original texture. Mean we'll have region of region of region.
# Take more time to implement a fix for it, if it's needed.
else:
print 'get region ??', self, self.width, self.height
texture = texture.get_region(
0, 0, self.width, self.height)
'''
self.texture = texture
# update texture
# If the text is 1px width, usually, the data is black.
# Don't blit that kind of data, otherwise, you have a little black bar.
if data is not None and data.width > 1:
texture.blit_data(data)
