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want to learn what I want
Posts: 1,641
Karma: 7908443
Join Date: Sep 2020
Device: none
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Quote:
Originally Posted by PapaKilo
Thanks for the info.
So, any clue as to how to create an actual style?
Papa
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If you take a look at covers.py in https://github.com/kovidgoyal/calibr...ooks/covers.py, you'll see some wild coding sorcery going on behind styles, such as:
class Cross(Style):
Spoiler:
NAME = 'The Cross'
GUI_NAME = _('The Cross')
def __call__(self, painter, rect, color_theme, title_block, subtitle_block, footer_block):
painter.fillRect(rect, self.color1)
r = QRect(0, int(title_block.position.y), rect.width(),
title_block.height + subtitle_block.height + subtitle_block.line_spacing // 2 + title_block.leading)
painter.save()
p = QPainterPath()
p.addRoundedRect(QRectF(r), 10, 10 * r.width()/r.height(), Qt.SizeMode.RelativeSize)
painter.setClipPath(p)
painter.setRenderHint(QPainter.RenderHint.Antialia sing)
painter.fillRect(r, self.color2)
painter.restore()
r = QRect(0, 0, int(title_block.position.x), rect.height())
painter.fillRect(r, self.color2)
return self.ccolor2, self.ccolor2, self.ccolor1
or
class Ornamental(Style):
Spoiler:
NAME = 'Ornamental'
GUI_NAME = _('Ornamental')
# SVG vectors {{{
CORNER_VECTOR = "m 67.791903,64.260958 c -4.308097,-2.07925 -4.086719,-8.29575 0.334943,-9.40552 4.119758,-1.03399 8.732363,5.05239 5.393055,7.1162 -0.55,0.33992 -1,1.04147 -1,1.55902 0,1.59332 2.597425,1.04548 5.365141,-1.1316 1.999416,-1.57274 2.634859,-2.96609 2.634859,-5.7775 0,-9.55787 -9.827495,-13.42961 -24.43221,-9.62556 -3.218823,0.83839 -5.905663,1.40089 -5.970755,1.25 -0.06509,-0.1509 -0.887601,-1.19493 -1.827799,-2.32007 -1.672708,-2.00174 -1.636693,-2.03722 1.675668,-1.65052 1.861815,0.21736 6.685863,-0.35719 10.720107,-1.27678 12.280767,-2.79934 20.195487,-0.0248 22.846932,8.0092 3.187273,9.65753 -6.423297,17.7497 -15.739941,13.25313 z m 49.881417,-20.53932 c -3.19204,-2.701 -3.72967,-6.67376 -1.24009,-9.16334 2.48236,-2.48236 5.35141,-2.67905 7.51523,-0.51523 1.85966,1.85966 2.07045,6.52954 0.37143,8.22857 -2.04025,2.04024 3.28436,1.44595 6.92316,-0.77272 9.66959,-5.89579 0.88581,-18.22422 -13.0777,-18.35516 -5.28594,-0.0496 -10.31098,1.88721 -14.26764,5.4991 -1.98835,1.81509 -2.16454,1.82692 -2.7936,0.18763 -0.40973,-1.06774 0.12141,-2.82197 1.3628,-4.50104 2.46349,-3.33205 1.67564,-4.01299 -2.891784,-2.49938 -2.85998,0.94777 -3.81038,2.05378 -5.59837,6.51495 -1.184469,2.95536 -3.346819,6.86882 -4.805219,8.69657 -1.4584,1.82776 -2.65164,4.02223 -2.65164,4.87662 0,3.24694 -4.442667,0.59094 -5.872557,-3.51085 -1.361274,-3.90495 0.408198,-8.63869 4.404043,-11.78183 5.155844,-4.05558 1.612374,-3.42079 -9.235926,1.65457 -12.882907,6.02725 -16.864953,7.18038 -24.795556,7.18038 -8.471637,0 -13.38802,-1.64157 -17.634617,-5.88816 -2.832233,-2.83224 -3.849773,-4.81378 -4.418121,-8.6038 -1.946289,-12.9787795 8.03227,-20.91713135 19.767685,-15.7259993 5.547225,2.4538018 6.993631,6.1265383 3.999564,10.1557393 -5.468513,7.35914 -15.917883,-0.19431 -10.657807,-7.7041155 1.486298,-2.1219878 1.441784,-2.2225068 -0.984223,-2.2225068 -1.397511,0 -4.010527,1.3130878 -5.806704,2.9179718 -2.773359,2.4779995 -3.265777,3.5977995 -3.265777,7.4266705 0,5.10943 2.254112,8.84197 7.492986,12.40748 8.921325,6.07175 19.286666,5.61396 37.12088,-1.63946 15.35037,-6.24321 21.294999,-7.42408 34.886123,-6.92999 11.77046,0.4279 19.35803,3.05537 24.34054,8.42878 4.97758,5.3681 2.53939,13.58271 -4.86733,16.39873 -4.17361,1.58681 -11.00702,1.19681 -13.31978,-0.76018 z m 26.50156,-0.0787 c -2.26347,-2.50111 -2.07852,-7.36311 0.39995,-10.51398 2.68134,-3.40877 10.49035,-5.69409 18.87656,-5.52426 l 6.5685,0.13301 -7.84029,0.82767 c -8.47925,0.89511 -12.76997,2.82233 -16.03465,7.20213 -1.92294,2.57976 -1.96722,3.00481 -0.57298,5.5 1.00296,1.79495 2.50427,2.81821 4.46514,3.04333 2.92852,0.33623 2.93789,0.32121 1.08045,-1.73124 -1.53602,-1.69728 -1.64654,-2.34411 -0.61324,-3.58916 2.84565,-3.4288 7.14497,-0.49759 5.03976,3.43603 -1.86726,3.48903 -8.65528,4.21532 -11.3692,1.21647 z m -4.17462,-14.20302 c -0.38836,-0.62838 -0.23556,-1.61305 0.33954,-2.18816 1.3439,-1.34389 4.47714,-0.17168 3.93038,1.47045 -0.5566,1.67168 -3.38637,2.14732 -4.26992,0.71771 z m -8.48037,-9.1829 c -12.462,-4.1101 -12.53952,-4.12156 -25.49998,-3.7694 -24.020921,0.65269 -32.338219,0.31756 -37.082166,-1.49417 -5.113999,-1.95305 -8.192504,-6.3647405 -6.485463,-9.2940713 0.566827,-0.972691 1.020091,-1.181447 1.037211,-0.477701 0.01685,0.692606 1.268676,1.2499998 2.807321,1.2499998 1.685814,0 4.868609,1.571672 8.10041,4.0000015 4.221481,3.171961 6.182506,3.999221 9.473089,3.996261 l 4.149585,-0.004 -3.249996,-1.98156 c -3.056252,-1.863441 -4.051566,-3.8760635 -2.623216,-5.3044145 0.794,-0.794 6.188222,1.901516 9.064482,4.5295635 1.858669,1.698271 3.461409,1.980521 10.559493,1.859621 11.30984,-0.19266 20.89052,1.29095 31.97905,4.95208 7.63881,2.52213 11.51931,3.16471 22.05074,3.65141 7.02931,0.32486 13.01836,0.97543 13.30902,1.44571 0.29065,0.47029 -5.2356,0.83436 -12.28056,0.80906 -12.25942,-0.044 -13.34537,-0.2229 -25.30902,-4.16865 z" # noqa
# }}}
PATH_CACHE = {}
VIEWPORT = (400, 500)
def calculate_margins(self, prefs):
self.hmargin = int((51 / self.VIEWPORT[0]) * prefs.cover_width)
self.vmargin = int((83 / self.VIEWPORT[1]) * prefs.cover_height)
def __call__(self, painter, rect, color_theme, title_block, subtitle_block, footer_block):
if not self.PATH_CACHE:
from calibre.utils.speedups import svg_path_to_painter_path
try:
self.__class__.PATH_CACHE['corner'] = svg_path_to_painter_path(self.CORNER_VECTOR)
except Exception:
import traceback
traceback.print_exc()
p = painter
painter.setRenderHint(QPainter.RenderHint.Antialia sing)
g = QRadialGradient(QPointF(rect.center()), rect.width())
g.setColorAt(0, self.color1), g.setColorAt(1, self.color2)
painter.fillRect(rect, QBrush(g))
painter.save()
painter.setWindow(0, 0, *self.VIEWPORT)
try:
path = self.PATH_CACHE['corner']
except KeyError:
path = QPainterPath()
pen = p.pen()
pen.setColor(self.ccolor1)
p.setPen(pen)
def corner():
b = QBrush(self.ccolor1)
p.fillPath(path, b)
p.rotate(90), p.translate(100, -100), p.scale(1, -1), p.translate(-103, -97)
p.fillPath(path, b)
p.setWorldTransform(QTransform())
# Top-left corner
corner()
# Top right corner
p.scale(-1, 1), p.translate(-400, 0), corner()
# Bottom left corner
p.scale(1, -1), p.translate(0, -500), corner()
# Bottom right corner
p.scale(-1, -1), p.translate(-400, -500), corner()
for y in (28.4, 471.7):
p.drawLine(QPointF(160, y), QPointF(240, y))
for x in (31.3, 368.7):
p.drawLine(QPointF(x, 155), QPointF(x, 345))
pen.setWidthF(1.8)
p.setPen(pen)
for y in (23.8, 476.7):
p.drawLine(QPointF(160, y), QPointF(240, y))
for x in (26.3, 373.7):
p.drawLine(QPointF(x, 155), QPointF(x, 345))
painter.restore()
return self.ccolor2, self.ccolor2, self.ccolor1
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