def _render_offscreen(self, drawable, data, dst_x, dst_y, width, height):
# NOTE [A]
daht, dawd, depth = data.shape
self.logger.debug("data shape is %dx%dx%d" % (dawd, daht, depth))
# Get qimage for copying pixel data
qimage = self._get_qimage(data)
painter = QPainter(drawable)
painter.setWorldMatrixEnabled(True)
# fill pixmap with background color
imgwin_wd, imgwin_ht = self.get_window_size()
bgclr = self._get_color(*self.img_bg)
painter.fillRect(QtCore.QRect(0, 0, imgwin_wd, imgwin_ht), bgclr)
# draw image data from buffer to offscreen pixmap
painter.drawImage(QtCore.QRect(dst_x, dst_y, width, height), qimage,
QtCore.QRect(0, 0, width, height))
# Draw a cross in the center of the window in debug mode
if self.t_['show_pan_position']:
clr = QColor()
clr.setRgbF(1.0, 0.0, 0.0)
painter.setPen(clr)
ctr_x, ctr_y = self.get_center()
painter.drawLine(ctr_x - 10, ctr_y, ctr_x + 10, ctr_y)
painter.drawLine(ctr_x, ctr_y - 10, ctr_x, ctr_y + 10)
# render self.message
if self.message:
self._draw_message(painter, imgwin_wd, imgwin_ht, self.message)
def __get_color(self, color, alpha):
clr = QColor()
if isinstance(color, tuple):
clr.setRgbF(color[0], color[1], color[2], alpha)
else:
r, g, b = colors.lookup_color(color)
clr.setRgbF(r, g, b, alpha)
return clr
def __get_color(self, color, alpha):
clr = QColor()
if isinstance(color, tuple):
clr.setRgbF(color[0], color[1], color[2], alpha)
else:
r, g, b = colors.lookup_color(color)
clr.setRgbF(r, g, b, alpha)
return clr
def _render_offscreen(self, drawable, data, dst_x, dst_y,
width, height):
# NOTE [A]
daht, dawd, depth = data.shape
self.logger.debug("data shape is %dx%dx%d" % (dawd, daht, depth))
# Get qimage for copying pixel data
qimage = self._get_qimage(data)
painter = QPainter(drawable)
painter.setWorldMatrixEnabled(True)
# fill pixmap with background color
imgwin_wd, imgwin_ht = self.get_window_size()
bgclr = self._get_color(*self.img_bg)
painter.fillRect(QtCore.QRect(0, 0, imgwin_wd, imgwin_ht),
bgclr)
# draw image data from buffer to offscreen pixmap
painter.drawImage(QtCore.QRect(dst_x, dst_y, width, height),
qimage,
QtCore.QRect(0, 0, width, height))
# Draw a cross in the center of the window in debug mode
if self.t_['show_pan_position']:
clr = QColor()
clr.setRgbF(1.0, 0.0, 0.0)
painter.setPen(clr)
ctr_x, ctr_y = self.get_center()
painter.drawLine(ctr_x - 10, ctr_y, ctr_x + 10, ctr_y)
painter.drawLine(ctr_x, ctr_y - 10, ctr_x, ctr_y + 10)
# render self.message
if self.message:
self._draw_message(painter, imgwin_wd, imgwin_ht,
self.message)
def _get_color(self, r, g, b):
n = 255.0
clr = QColor(int(r * n), int(g * n), int(b * n))
return clr
def _get_color(self, r, g, b):
# TODO: combine with the method from the RenderContext?
n = 255.0
clr = QColor(int(r * n), int(g * n), int(b * n))
return clr
def _draw(self, cr):
width, height = self.get_size()
#print "window size is %d,%d" % (width, height)
x1 = 0; x2 = width
clr_wd = width // 256
rem_px = x2 - (clr_wd * 256)
if rem_px > 0:
ival = 256 // rem_px
else:
ival = 0
clr_ht = height
#print "clr is %dx%d width=%d rem=%d ival=%d" % (
# width, height, clr_wd, rem_px, ival)
dist = self.rgbmap.get_dist()
j = ival; off = 0
range_pts = []
for i in range(256):
wd = clr_wd
if rem_px > 0:
j -= 1
if j == 0:
rem_px -= 1
j = ival
wd += 1
x = off
(r, g, b) = self.rgbmap.get_rgbval(i)
color = QColor(r, g, b)
cr.fillRect(QtCore.QRect(x, 0, wd, clr_ht), color)
# Draw range scale if we are supposed to
if self.t_showrange and i in self._interval:
cb_pct = float(i) / 256.0
# get inverse of distribution function and calculate value
# at this position
rng_pct = dist.get_dist_pct(cb_pct)
val = int(self.loval + (rng_pct * (self.hival - self.loval)))
text = "%d" % (val)
rect = cr.boundingRect(0, 0, 1000, 1000, 0, text)
x1, y1, x2, y2 = rect.getCoords()
_wd = x2 - x1
_ht = y2 - y1
_ht = 14
rx = x
ry = _ht - 2
range_pts.append((rx, ry, text))
off += wd
# draw range
pen = cr.pen()
cr.setFont(QFont(self.t_font, pointSize=self.t_fontsize))
color = QColor()
color.setRgbF(0.0, 0.0, 0.0)
pen.setColor(color)
cr.setPen(pen)
for (x, y, text) in range_pts:
# tick
cr.drawLine(x, 0, x, 2)
# number
cr.drawText(x, y, text)
def _draw(self, cr):
width, height = self.get_size()
#print "window size is %d,%d" % (width, height)
x1 = 0
x2 = width
clr_wd = width // 256
rem_px = x2 - (clr_wd * 256)
if rem_px > 0:
ival = 256 // rem_px
else:
ival = 0
clr_ht = height
#print "clr is %dx%d width=%d rem=%d ival=%d" % (
# width, height, clr_wd, rem_px, ival)
dist = self.rgbmap.get_dist()
j = ival
off = 0
range_pts = []
for i in range(256):
wd = clr_wd
if rem_px > 0:
j -= 1
if j == 0:
rem_px -= 1
j = ival
wd += 1
x = off
(r, g, b) = self.rgbmap.get_rgbval(i)
color = QColor(r, g, b)
cr.fillRect(QtCore.QRect(x, 0, wd, clr_ht), color)
# Draw range scale if we are supposed to
if self.t_showrange and i in self._interval:
cb_pct = float(i) / 256.0
# get inverse of distribution function and calculate value
# at this position
rng_pct = dist.get_dist_pct(cb_pct)
val = int(self.loval + (rng_pct * (self.hival - self.loval)))
text = "%d" % (val)
rect = cr.boundingRect(0, 0, 1000, 1000, 0, text)
x1, y1, x2, y2 = rect.getCoords()
_wd = x2 - x1
_ht = y2 - y1
_ht = 14
rx = x
ry = _ht - 2
range_pts.append((rx, ry, text))
off += wd
# draw range
pen = cr.pen()
cr.setFont(QFont(self.t_font, pointSize=self.t_fontsize))
color = QColor()
color.setRgbF(0.0, 0.0, 0.0)
pen.setColor(color)
cr.setPen(pen)
for (x, y, text) in range_pts:
# tick
cr.drawLine(x, 0, x, 2)
# number
cr.drawText(x, y, text)