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Split draw module into multiple submodules
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weasyprint/draw.py
1511
weasyprint/draw.py
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535
weasyprint/draw/__init__.py
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535
weasyprint/draw/__init__.py
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"""Take an "after layout" box tree and draw it onto a pydyf stream."""
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import operator
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from math import floor
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from xml.etree import ElementTree
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from ..formatting_structure import boxes
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from ..images import SVGImage
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from ..layout import replaced
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from ..layout.background import BackgroundLayer
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from ..matrix import Matrix
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from ..stacking import StackingContext
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from .border import draw_border, draw_line, draw_outline, rounded_box, set_mask_border
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from .color import styled_color
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from .stack import stacked
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from .text import draw_text
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def draw_page(page, stream):
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"""Draw the given PageBox."""
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marks = page.style['marks']
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stacking_context = StackingContext.from_page(page)
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draw_background(
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stream, stacking_context.box.background, clip_box=False, bleed=page.bleed,
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marks=marks)
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set_mask_border(stream, page)
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draw_background(stream, page.canvas_background, clip_box=False)
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draw_border(stream, page)
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draw_stacking_context(stream, stacking_context)
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def draw_stacking_context(stream, stacking_context):
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"""Draw a ``stacking_context`` on ``stream``."""
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# See https://www.w3.org/TR/CSS2/zindex.html.
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with stacked(stream):
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box = stacking_context.box
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stream.begin_marked_content(box, mcid=True)
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# Apply the viewport_overflow to the html box, see #35.
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if box.is_for_root_element and (
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stacking_context.page.style['overflow'] != 'visible'):
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rounded_box(stream, stacking_context.page.rounded_padding_box())
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stream.clip()
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stream.end()
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if box.is_absolutely_positioned() and box.style['clip']:
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top, right, bottom, left = box.style['clip']
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if top == 'auto':
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top = 0
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if right == 'auto':
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right = 0
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if bottom == 'auto':
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bottom = box.border_height()
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if left == 'auto':
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left = box.border_width()
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stream.rectangle(
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box.border_box_x() + right, box.border_box_y() + top,
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left - right, bottom - top)
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stream.clip()
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stream.end()
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if box.style['opacity'] < 1:
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original_stream = stream
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stream = stream.add_group(*stream.page_rectangle)
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if box.transformation_matrix:
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if box.transformation_matrix.determinant:
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stream.transform(*box.transformation_matrix.values)
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else:
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stream.end_marked_content()
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return
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# Point 1 is done in draw_page.
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# Point 2.
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if isinstance(box, (boxes.BlockBox, boxes.MarginBox,
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boxes.InlineBlockBox, boxes.TableCellBox,
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boxes.FlexContainerBox, boxes.ReplacedBox)):
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set_mask_border(stream, box)
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# The canvas background was removed by layout_backgrounds
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draw_background(stream, box.background)
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draw_border(stream, box)
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with stacked(stream):
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# Dont clip the page box, see #35.
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clip = (
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box.style['overflow'] != 'visible' and
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not isinstance(box, boxes.PageBox))
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if clip:
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# Only clip the content and the children:
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# - the background is already clipped,
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# - the border must *not* be clipped.
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rounded_box(stream, box.rounded_padding_box())
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stream.clip()
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stream.end()
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# Point 3.
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for child_context in stacking_context.negative_z_contexts:
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draw_stacking_context(stream, child_context)
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# Point 4.
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for block in stacking_context.block_level_boxes:
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set_mask_border(stream, block)
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if isinstance(block, boxes.TableBox):
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draw_table(stream, block)
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else:
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draw_background(stream, block.background)
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draw_border(stream, block)
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# Point 5.
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for child_context in stacking_context.float_contexts:
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draw_stacking_context(stream, child_context)
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# Point 6.
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if isinstance(box, boxes.InlineBox):
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draw_inline_level(stream, stacking_context.page, box)
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# Point 7.
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for block in (box, *stacking_context.blocks_and_cells):
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if isinstance(block, boxes.ReplacedBox):
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draw_replacedbox(stream, block)
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elif block.children:
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if block != box:
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stream.begin_marked_content(block, mcid=True)
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if isinstance(block.children[-1], boxes.LineBox):
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for child in block.children:
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draw_inline_level(stream, stacking_context.page, child)
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if block != box:
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stream.end_marked_content()
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# Point 8.
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for child_context in stacking_context.zero_z_contexts:
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draw_stacking_context(stream, child_context)
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# Point 9.
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for child_context in stacking_context.positive_z_contexts:
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draw_stacking_context(stream, child_context)
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# Point 10.
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draw_outline(stream, box)
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if box.style['opacity'] < 1:
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group_id = stream.id
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stream = original_stream
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with stacked(stream):
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stream.set_alpha(box.style['opacity'], stroke=True, fill=True)
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stream.draw_x_object(group_id)
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stream.end_marked_content()
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def draw_background(stream, bg, clip_box=True, bleed=None, marks=()):
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"""Draw the background color and image to a ``document.Stream``.
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If ``clip_box`` is set to ``False``, the background is not clipped to the
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border box of the background, but only to the painting area.
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"""
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if bg is None:
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return
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with stacked(stream):
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if clip_box:
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for box in bg.layers[-1].clipped_boxes:
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rounded_box(stream, box)
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stream.clip()
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stream.end()
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# Draw background color.
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if bg.color.alpha > 0:
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with stacked(stream):
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stream.set_color_rgb(*bg.color[:3])
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stream.set_alpha(bg.color.alpha)
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painting_area = bg.layers[-1].painting_area
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stream.rectangle(*painting_area)
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stream.clip()
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stream.end()
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stream.rectangle(*painting_area)
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stream.fill()
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# Draw crop marks and crosses.
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if bleed and marks:
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x, y, width, height = bg.layers[-1].painting_area
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half_bleed = {key: value * 0.5 for key, value in bleed.items()}
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svg = f'''
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<svg height="{height}" width="{width}"
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fill="transparent" stroke="black" stroke-width="1"
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xmlns="http://www.w3.org/2000/svg">
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'''
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if 'crop' in marks:
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svg += f'''
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<path d="M0,{bleed['top']} h{half_bleed['left']}" />
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<path d="M0,{bleed['top']} h{half_bleed['right']}"
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transform="translate({width},0) scale(-1,1)" />
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<path d="M0,{bleed['bottom']} h{half_bleed['right']}"
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transform="translate({width},{height}) scale(-1,-1)" />
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<path d="M0,{bleed['bottom']} h{half_bleed['left']}"
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transform="translate(0,{height}) scale(1,-1)" />
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<path d="M{bleed['left']},0 v{half_bleed['top']}" />
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<path d="M{bleed['right']},0 v{half_bleed['bottom']}"
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transform="translate({width},{height}) scale(-1,-1)" />
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<path d="M{bleed['left']},0 v{half_bleed['bottom']}"
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transform="translate(0,{height}) scale(1,-1)" />
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<path d="M{bleed['right']},0 v{half_bleed['top']}"
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transform="translate({width},0) scale(-1,1)" />
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'''
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if 'cross' in marks:
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svg += f'''
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<circle r="{half_bleed['top']}" transform="scale(0.5)
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translate({width},{half_bleed['top']}) scale(0.5)" />
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<path transform="scale(0.5) translate({width},0)" d="
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M-{half_bleed['top']},{half_bleed['top']} h{bleed['top']}
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M0,0 v{bleed['top']}" />
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<circle r="{half_bleed['bottom']}" transform="
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translate(0,{height}) scale(0.5)
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translate({width},-{half_bleed['bottom']}) scale(0.5)" />
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<path d="M-{half_bleed['bottom']},-{half_bleed['bottom']}
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h{bleed['bottom']} M0,0 v-{bleed['bottom']}" transform="
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translate(0,{height}) scale(0.5) translate({width},0)" />
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<circle r="{half_bleed['left']}" transform="scale(0.5)
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translate({half_bleed['left']},{height}) scale(0.5)" />
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<path d="M{half_bleed['left']},-{half_bleed['left']}
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v{bleed['left']} M0,0 h{bleed['left']}"
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transform="scale(0.5) translate(0,{height})" />
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<circle r="{half_bleed['right']}" transform="
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translate({width},0) scale(0.5)
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translate(-{half_bleed['right']},{height}) scale(0.5)" />
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<path d="M-{half_bleed['right']},-{half_bleed['right']}
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v{bleed['right']} M0,0 h-{bleed['right']}" transform="
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translate({width},0) scale(0.5) translate(0,{height})" />
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'''
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svg += '</svg>'
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tree = ElementTree.fromstring(svg)
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image = SVGImage(tree, None, None, stream)
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# Painting area is the PDF media box
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size = (width, height)
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position = (x, y)
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repeat = ('no-repeat', 'no-repeat')
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unbounded = True
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painting_area = position + size
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positioning_area = (0, 0, width, height)
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clipped_boxes = []
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layer = BackgroundLayer(
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image, size, position, repeat, unbounded, painting_area,
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positioning_area, clipped_boxes)
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bg.layers.insert(0, layer)
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# Paint in reversed order: first layer is "closest" to the viewer.
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for layer in reversed(bg.layers):
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draw_background_image(stream, layer, bg.image_rendering)
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def draw_background_image(stream, layer, image_rendering):
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if layer.image is None or 0 in layer.size:
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return
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painting_x, painting_y, painting_width, painting_height = layer.painting_area
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positioning_x, positioning_y, positioning_width, positioning_height = (
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layer.positioning_area)
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position_x, position_y = layer.position
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repeat_x, repeat_y = layer.repeat
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image_width, image_height = layer.size
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if repeat_x == 'no-repeat':
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# We want at least the whole image_width drawn on sub_surface, but we
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# want to be sure it will not be repeated on the painting_width. We
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# double the painting width to ensure viewers don't incorrectly bleed
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# the edge of the pattern into the painting area. (See #1539.)
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repeat_width = max(image_width, 2 * painting_width)
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elif repeat_x in ('repeat', 'round'):
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# We repeat the image each image_width.
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repeat_width = image_width
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else:
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assert repeat_x == 'space'
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n_repeats = floor(positioning_width / image_width)
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if n_repeats >= 2:
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# The repeat width is the whole positioning width with one image
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# removed, divided by (the number of repeated images - 1). This
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# way, we get the width of one image + one space. We ignore
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# background-position for this dimension.
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repeat_width = (positioning_width - image_width) / (n_repeats - 1)
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position_x = 0
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else:
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# We don't repeat the image.
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repeat_width = positioning_width
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# Comments above apply here too.
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if repeat_y == 'no-repeat':
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repeat_height = max(image_height, 2 * painting_height)
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elif repeat_y in ('repeat', 'round'):
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repeat_height = image_height
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else:
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assert repeat_y == 'space'
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n_repeats = floor(positioning_height / image_height)
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if n_repeats >= 2:
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repeat_height = (positioning_height - image_height) / (n_repeats - 1)
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position_y = 0
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else:
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repeat_height = positioning_height
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matrix = Matrix(e=position_x + positioning_x, f=position_y + positioning_y)
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matrix @= stream.ctm
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pattern = stream.add_pattern(
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0, 0, image_width, image_height, repeat_width, repeat_height, matrix)
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group = pattern.add_group(0, 0, repeat_width, repeat_height)
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with stacked(stream):
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layer.image.draw(group, image_width, image_height, image_rendering)
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pattern.draw_x_object(group.id)
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stream.color_space('Pattern')
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stream.set_color_special(pattern.id)
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if layer.unbounded:
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x1, y1, x2, y2 = stream.page_rectangle
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stream.rectangle(x1, y1, x2 - x1, y2 - y1)
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else:
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stream.rectangle(painting_x, painting_y, painting_width, painting_height)
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stream.fill()
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def draw_table(stream, table):
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# Draw backgrounds.
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draw_background(stream, table.background)
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for column_group in table.column_groups:
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draw_background(stream, column_group.background)
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for column in column_group.children:
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draw_background(stream, column.background)
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for row_group in table.children:
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draw_background(stream, row_group.background)
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for row in row_group.children:
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draw_background(stream, row.background)
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for cell in row.children:
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draw_cell_background = (
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table.style['border_collapse'] == 'collapse' or
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cell.style['empty_cells'] == 'show' or
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not cell.empty)
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if draw_cell_background:
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draw_background(stream, cell.background)
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# Draw borders.
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if table.style['border_collapse'] == 'collapse':
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return draw_collapsed_borders(stream, table)
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draw_border(stream, table)
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for row_group in table.children:
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for row in row_group.children:
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for cell in row.children:
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if cell.style['empty_cells'] == 'show' or not cell.empty:
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draw_border(stream, cell)
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def draw_collapsed_borders(stream, table):
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"""Draw borders of table cells when they collapse."""
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row_heights = [
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row.height for row_group in table.children
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for row in row_group.children]
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column_widths = table.column_widths
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if not (row_heights and column_widths):
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# One of the list is empty: don’t bother with empty tables.
|
||||||
|
return
|
||||||
|
row_positions = [
|
||||||
|
row.position_y for row_group in table.children
|
||||||
|
for row in row_group.children]
|
||||||
|
column_positions = list(table.column_positions)
|
||||||
|
grid_height = len(row_heights)
|
||||||
|
grid_width = len(column_widths)
|
||||||
|
assert grid_width == len(column_positions)
|
||||||
|
# Add the end of the last column, but make a copy from the table attr.
|
||||||
|
if table.style['direction'] == 'ltr':
|
||||||
|
column_positions.append(column_positions[-1] + column_widths[-1])
|
||||||
|
else:
|
||||||
|
column_positions.insert(0, column_positions[0] + column_widths[0])
|
||||||
|
# Add the end of the last row. No copy here, we own this list.
|
||||||
|
row_positions.append(row_positions[-1] + row_heights[-1])
|
||||||
|
vertical_borders, horizontal_borders = table.collapsed_border_grid
|
||||||
|
if table.children[0].is_header:
|
||||||
|
header_rows = len(table.children[0].children)
|
||||||
|
else:
|
||||||
|
header_rows = 0
|
||||||
|
if table.children[-1].is_footer:
|
||||||
|
footer_rows = len(table.children[-1].children)
|
||||||
|
else:
|
||||||
|
footer_rows = 0
|
||||||
|
skipped_rows = table.skipped_rows
|
||||||
|
if skipped_rows:
|
||||||
|
body_rows_offset = skipped_rows - header_rows
|
||||||
|
else:
|
||||||
|
body_rows_offset = 0
|
||||||
|
original_grid_height = len(vertical_borders)
|
||||||
|
footer_rows_offset = original_grid_height - grid_height
|
||||||
|
|
||||||
|
def row_number(y, horizontal):
|
||||||
|
# Examples in comments for 2 headers rows, 5 body rows, 3 footer rows.
|
||||||
|
if header_rows and y < header_rows + int(horizontal):
|
||||||
|
# Row in header: y < 2 for vertical, y < 3 for horizontal.
|
||||||
|
return y
|
||||||
|
elif footer_rows and y >= grid_height - footer_rows - int(horizontal):
|
||||||
|
# Row in footer: y >= 7 for vertical, y >= 6 for horizontal.
|
||||||
|
return y + footer_rows_offset
|
||||||
|
else:
|
||||||
|
# Row in body: 2 >= y > 7 for vertical, 3 >= y > 6 for horizontal.
|
||||||
|
return y + body_rows_offset
|
||||||
|
|
||||||
|
segments = []
|
||||||
|
|
||||||
|
def half_max_width(border_list, yx_pairs, vertical=True):
|
||||||
|
result = 0
|
||||||
|
for y, x in yx_pairs:
|
||||||
|
if vertical:
|
||||||
|
inside = 0 <= y < grid_height and 0 <= x <= grid_width
|
||||||
|
else:
|
||||||
|
inside = 0 <= y <= grid_height and 0 <= x < grid_width
|
||||||
|
if inside:
|
||||||
|
yy = row_number(y, horizontal=not vertical)
|
||||||
|
_, (_, width, _) = border_list[yy][x]
|
||||||
|
result = max(result, width)
|
||||||
|
return result / 2
|
||||||
|
|
||||||
|
def add_vertical(x, y):
|
||||||
|
yy = row_number(y, horizontal=False)
|
||||||
|
score, (style, width, color) = vertical_borders[yy][x]
|
||||||
|
if width == 0 or color.alpha == 0:
|
||||||
|
return
|
||||||
|
pos_x = column_positions[x]
|
||||||
|
pos_y1 = row_positions[y]
|
||||||
|
if y != 0 or not table.skip_cell_border_top:
|
||||||
|
pos_y1 -= half_max_width(
|
||||||
|
horizontal_borders, [(y, x - 1), (y, x)], vertical=False)
|
||||||
|
pos_y2 = row_positions[y + 1]
|
||||||
|
if y != grid_height - 1 or not table.skip_cell_border_bottom:
|
||||||
|
pos_y2 += half_max_width(
|
||||||
|
horizontal_borders, [(y + 1, x - 1), (y + 1, x)], vertical=False)
|
||||||
|
segments.append((
|
||||||
|
score, style, width, color, 'left', (pos_x, pos_y1, 0, pos_y2 - pos_y1)))
|
||||||
|
|
||||||
|
def add_horizontal(x, y):
|
||||||
|
if y == 0 and table.skip_cell_border_top:
|
||||||
|
return
|
||||||
|
if y == grid_height and table.skip_cell_border_bottom:
|
||||||
|
return
|
||||||
|
yy = row_number(y, horizontal=True)
|
||||||
|
score, (style, width, color) = horizontal_borders[yy][x]
|
||||||
|
if width == 0 or color.alpha == 0:
|
||||||
|
return
|
||||||
|
pos_y = row_positions[y]
|
||||||
|
shift_before = half_max_width(vertical_borders, [(y - 1, x), (y, x)])
|
||||||
|
shift_after = half_max_width(vertical_borders, [(y - 1, x + 1), (y, x + 1)])
|
||||||
|
if table.style['direction'] == 'ltr':
|
||||||
|
pos_x1 = column_positions[x] - shift_before
|
||||||
|
pos_x2 = column_positions[x + 1] + shift_after
|
||||||
|
else:
|
||||||
|
pos_x1 = column_positions[x + 1] - shift_after
|
||||||
|
pos_x2 = column_positions[x] + shift_before
|
||||||
|
segments.append((
|
||||||
|
score, style, width, color, 'top', (pos_x1, pos_y, pos_x2 - pos_x1, 0)))
|
||||||
|
|
||||||
|
for x in range(grid_width):
|
||||||
|
add_horizontal(x, 0)
|
||||||
|
for y in range(grid_height):
|
||||||
|
add_vertical(0, y)
|
||||||
|
for x in range(grid_width):
|
||||||
|
add_vertical(x + 1, y)
|
||||||
|
add_horizontal(x, y + 1)
|
||||||
|
|
||||||
|
# Sort bigger scores last (painted later, on top).
|
||||||
|
segments.sort(key=operator.itemgetter(0))
|
||||||
|
|
||||||
|
for segment in segments:
|
||||||
|
_, style, width, color, side, border_box = segment
|
||||||
|
with stacked(stream):
|
||||||
|
bx, by, bw, bh = border_box
|
||||||
|
color = styled_color(style, color, side)
|
||||||
|
draw_line(stream, bx, by, bx + bw, by + bh, width, style, color)
|
||||||
|
|
||||||
|
|
||||||
|
def draw_replacedbox(stream, box):
|
||||||
|
"""Draw the given :class:`boxes.ReplacedBox` to a ``document.Stream``."""
|
||||||
|
if box.style['visibility'] != 'visible' or not box.width or not box.height:
|
||||||
|
return
|
||||||
|
|
||||||
|
draw_width, draw_height, draw_x, draw_y = replaced.replacedbox_layout(box)
|
||||||
|
if draw_width <= 0 or draw_height <= 0:
|
||||||
|
return
|
||||||
|
|
||||||
|
with stacked(stream):
|
||||||
|
stream.set_alpha(1)
|
||||||
|
stream.transform(e=draw_x, f=draw_y)
|
||||||
|
with stacked(stream):
|
||||||
|
# TODO: Use the real intrinsic size here, not affected by
|
||||||
|
# 'image-resolution'?
|
||||||
|
box.replacement.draw(
|
||||||
|
stream, draw_width, draw_height, box.style['image_rendering'])
|
||||||
|
|
||||||
|
|
||||||
|
def draw_inline_level(stream, page, box, offset_x=0, text_overflow='clip',
|
||||||
|
block_ellipsis='none'):
|
||||||
|
if isinstance(box, StackingContext):
|
||||||
|
stacking_context = box
|
||||||
|
allowed_boxes = (boxes.InlineBlockBox, boxes.InlineFlexBox, boxes.InlineGridBox)
|
||||||
|
assert isinstance(stacking_context.box, allowed_boxes)
|
||||||
|
draw_stacking_context(stream, stacking_context)
|
||||||
|
else:
|
||||||
|
set_mask_border(stream, box)
|
||||||
|
draw_background(stream, box.background)
|
||||||
|
draw_border(stream, box)
|
||||||
|
if isinstance(box, (boxes.InlineBox, boxes.LineBox)):
|
||||||
|
link_annotation = None
|
||||||
|
if isinstance(box, boxes.LineBox):
|
||||||
|
text_overflow = box.text_overflow
|
||||||
|
block_ellipsis = box.block_ellipsis
|
||||||
|
else:
|
||||||
|
link_annotation = box.link_annotation
|
||||||
|
ellipsis = 'none'
|
||||||
|
if link_annotation:
|
||||||
|
stream.begin_marked_content(box, mcid=True, tag='Link')
|
||||||
|
for i, child in enumerate(box.children):
|
||||||
|
if i == len(box.children) - 1:
|
||||||
|
# Last child
|
||||||
|
ellipsis = block_ellipsis
|
||||||
|
if isinstance(child, StackingContext):
|
||||||
|
child_offset_x = offset_x
|
||||||
|
else:
|
||||||
|
child_offset_x = offset_x + child.position_x - box.position_x
|
||||||
|
if isinstance(child, boxes.TextBox):
|
||||||
|
draw_text(stream, child, child_offset_x, text_overflow, ellipsis)
|
||||||
|
else:
|
||||||
|
draw_inline_level(
|
||||||
|
stream, page, child, child_offset_x, text_overflow, ellipsis)
|
||||||
|
if link_annotation:
|
||||||
|
stream.end_marked_content()
|
||||||
|
elif isinstance(box, boxes.InlineReplacedBox):
|
||||||
|
draw_replacedbox(stream, box)
|
||||||
|
else:
|
||||||
|
assert isinstance(box, boxes.TextBox)
|
||||||
|
# Should only happen for list markers.
|
||||||
|
draw_text(stream, box, offset_x, text_overflow)
|
673
weasyprint/draw/border.py
Normal file
673
weasyprint/draw/border.py
Normal file
@ -0,0 +1,673 @@
|
|||||||
|
"""Draw borders."""
|
||||||
|
|
||||||
|
from math import ceil, floor, pi, sqrt, tan
|
||||||
|
|
||||||
|
from ..formatting_structure import boxes
|
||||||
|
from ..layout import replaced
|
||||||
|
from ..layout.percent import percentage
|
||||||
|
from ..matrix import Matrix
|
||||||
|
from .color import get_color, styled_color
|
||||||
|
from .stack import stacked
|
||||||
|
|
||||||
|
SIDES = ('top', 'right', 'bottom', 'left')
|
||||||
|
|
||||||
|
|
||||||
|
def set_mask_border(stream, box):
|
||||||
|
"""Set ``box`` mask border as alpha state on ``stream``."""
|
||||||
|
if box.style['mask_border_source'][0] == 'none' or box.mask_border_image is None:
|
||||||
|
return
|
||||||
|
x, y, w, h, tl, tr, br, bl = box.rounded_border_box()
|
||||||
|
matrix = Matrix(e=x, f=y)
|
||||||
|
matrix @= stream.ctm
|
||||||
|
mask_stream = stream.set_alpha_state(x, y, w, h, box.style['mask_border_mode'])
|
||||||
|
draw_border_image(
|
||||||
|
box, mask_stream, box.mask_border_image, box.style['mask_border_slice'],
|
||||||
|
box.style['mask_border_repeat'], box.style['mask_border_outset'],
|
||||||
|
box.style['mask_border_width'])
|
||||||
|
|
||||||
|
|
||||||
|
def draw_border(stream, box):
|
||||||
|
"""Draw the box borders and column rules to a ``document.Stream``."""
|
||||||
|
|
||||||
|
# The box is hidden, easy.
|
||||||
|
if box.style['visibility'] != 'visible':
|
||||||
|
return
|
||||||
|
|
||||||
|
# Draw column borders.
|
||||||
|
columns = (
|
||||||
|
isinstance(box, boxes.BlockContainerBox) and (
|
||||||
|
box.style['column_width'] != 'auto' or
|
||||||
|
box.style['column_count'] != 'auto'))
|
||||||
|
if columns and box.style['column_rule_width']:
|
||||||
|
border_widths = (0, 0, 0, box.style['column_rule_width'])
|
||||||
|
skip_next = True
|
||||||
|
for child in box.children:
|
||||||
|
if child.style['column_span'] == 'all':
|
||||||
|
skip_next = True
|
||||||
|
continue
|
||||||
|
elif skip_next:
|
||||||
|
skip_next = False
|
||||||
|
continue
|
||||||
|
with stacked(stream):
|
||||||
|
rule_width = box.style['column_rule_width']
|
||||||
|
rule_style = box.style['column_rule_style']
|
||||||
|
gap = percentage(box.style['column_gap'], box.width)
|
||||||
|
position_x = (
|
||||||
|
child.position_x - (box.style['column_rule_width'] + gap) / 2)
|
||||||
|
border_box = (position_x, child.position_y, rule_width, child.height)
|
||||||
|
clip_border_segment(
|
||||||
|
stream, rule_style, rule_width, 'left', border_box, border_widths)
|
||||||
|
color = styled_color(
|
||||||
|
rule_style, get_color(box.style, 'column_rule_color'), 'left')
|
||||||
|
draw_rect_border(stream, border_box, border_widths, rule_style, color)
|
||||||
|
|
||||||
|
# If there's a border image, that takes precedence.
|
||||||
|
if box.style['border_image_source'][0] != 'none' and box.border_image is not None:
|
||||||
|
draw_border_image(
|
||||||
|
box, stream, box.border_image, box.style['border_image_slice'],
|
||||||
|
box.style['border_image_repeat'], box.style['border_image_outset'],
|
||||||
|
box.style['border_image_width'])
|
||||||
|
return
|
||||||
|
|
||||||
|
widths = [getattr(box, f'border_{side}_width') for side in SIDES]
|
||||||
|
|
||||||
|
if set(widths) == {0}:
|
||||||
|
# No border, return early.
|
||||||
|
return
|
||||||
|
|
||||||
|
colors = [get_color(box.style, f'border_{side}_color') for side in SIDES]
|
||||||
|
styles = [
|
||||||
|
colors[i].alpha and box.style[f'border_{side}_style']
|
||||||
|
for (i, side) in enumerate(SIDES)]
|
||||||
|
|
||||||
|
simple_style = set(styles) in ({'solid'}, {'double'}) # one style, simple lines
|
||||||
|
single_color = len(set(colors)) == 1 # one color
|
||||||
|
four_sides = 0 not in widths # no 0-width border, to avoid PDF artifacts
|
||||||
|
if simple_style and single_color and four_sides:
|
||||||
|
# Simple case, we only draw rounded rectangles.
|
||||||
|
draw_rounded_border(stream, box, styles[0], colors[0])
|
||||||
|
return
|
||||||
|
|
||||||
|
# We're not smart enough to find a good way to draw the borders, we must
|
||||||
|
# draw them side by side. Order is not specified, but this one seems to be
|
||||||
|
# close to what other browsers do.
|
||||||
|
values = tuple(zip(SIDES, widths, colors, styles))
|
||||||
|
for index in (2, 3, 1, 0):
|
||||||
|
side, width, color, style = values[index]
|
||||||
|
if width == 0 or not color:
|
||||||
|
continue
|
||||||
|
with stacked(stream):
|
||||||
|
clip_border_segment(
|
||||||
|
stream, style, width, side, box.rounded_border_box()[:4],
|
||||||
|
widths, box.rounded_border_box()[4:])
|
||||||
|
draw_rounded_border(
|
||||||
|
stream, box, style, styled_color(style, color, side))
|
||||||
|
|
||||||
|
|
||||||
|
def draw_border_image(box, stream, image, border_slice, border_repeat, border_outset,
|
||||||
|
border_width):
|
||||||
|
"""Draw ``image`` as a border image for ``box`` on ``stream`` as specified."""
|
||||||
|
# Shared by border-image-* and mask-border-*.
|
||||||
|
width, height, ratio = image.get_intrinsic_size(
|
||||||
|
box.style['image_resolution'], box.style['font_size'])
|
||||||
|
intrinsic_width, intrinsic_height = replaced.default_image_sizing(
|
||||||
|
width, height, ratio, specified_width=None, specified_height=None,
|
||||||
|
default_width=box.border_width(), default_height=box.border_height())
|
||||||
|
|
||||||
|
image_slice = border_slice[:4]
|
||||||
|
should_fill = border_slice[4]
|
||||||
|
|
||||||
|
def compute_slice_dimension(dimension, intrinsic):
|
||||||
|
if isinstance(dimension, (int, float)):
|
||||||
|
return min(dimension, intrinsic)
|
||||||
|
else:
|
||||||
|
assert dimension.unit == '%'
|
||||||
|
return min(100, dimension.value) / 100 * intrinsic
|
||||||
|
|
||||||
|
slice_top = compute_slice_dimension(image_slice[0], intrinsic_height)
|
||||||
|
slice_right = compute_slice_dimension(image_slice[1], intrinsic_width)
|
||||||
|
slice_bottom = compute_slice_dimension(image_slice[2], intrinsic_height)
|
||||||
|
slice_left = compute_slice_dimension(image_slice[3], intrinsic_width)
|
||||||
|
|
||||||
|
repeat_x, repeat_y = border_repeat
|
||||||
|
|
||||||
|
x, y, w, h, tl, tr, br, bl = box.rounded_border_box()
|
||||||
|
px, py, pw, ph, ptl, ptr, pbr, pbl = box.rounded_padding_box()
|
||||||
|
border_left = px - x
|
||||||
|
border_top = py - y
|
||||||
|
border_right = w - pw - border_left
|
||||||
|
border_bottom = h - ph - border_top
|
||||||
|
|
||||||
|
def compute_outset_dimension(dimension, from_border):
|
||||||
|
if dimension.unit is None:
|
||||||
|
return dimension.value * from_border
|
||||||
|
else:
|
||||||
|
assert dimension.unit == 'px'
|
||||||
|
return dimension.value
|
||||||
|
|
||||||
|
outset_top = compute_outset_dimension(border_outset[0], border_top)
|
||||||
|
outset_right = compute_outset_dimension(border_outset[1], border_right)
|
||||||
|
outset_bottom = compute_outset_dimension(border_outset[2], border_bottom)
|
||||||
|
outset_left = compute_outset_dimension(border_outset[3], border_left)
|
||||||
|
|
||||||
|
x -= outset_left
|
||||||
|
y -= outset_top
|
||||||
|
w += outset_left + outset_right
|
||||||
|
h += outset_top + outset_bottom
|
||||||
|
|
||||||
|
def compute_width_adjustment(dimension, original, intrinsic,
|
||||||
|
area_dimension):
|
||||||
|
if dimension == 'auto':
|
||||||
|
return intrinsic
|
||||||
|
elif isinstance(dimension, (int, float)):
|
||||||
|
return dimension * original
|
||||||
|
elif dimension.unit == '%':
|
||||||
|
return dimension.value / 100 * area_dimension
|
||||||
|
else:
|
||||||
|
assert dimension.unit == 'px'
|
||||||
|
return dimension.value
|
||||||
|
|
||||||
|
# We make adjustments to the border_* variables after handling outsets
|
||||||
|
# because numerical outsets are relative to border-width, not
|
||||||
|
# border-image-width. Also, the border image area that is used
|
||||||
|
# for percentage-based border-image-width values includes any expanded
|
||||||
|
# area due to border-image-outset.
|
||||||
|
border_top = compute_width_adjustment(
|
||||||
|
border_width[0], border_top, slice_top, h)
|
||||||
|
border_right = compute_width_adjustment(
|
||||||
|
border_width[1], border_right, slice_right, w)
|
||||||
|
border_bottom = compute_width_adjustment(
|
||||||
|
border_width[2], border_bottom, slice_bottom, h)
|
||||||
|
border_left = compute_width_adjustment(
|
||||||
|
border_width[3], border_left, slice_left, w)
|
||||||
|
|
||||||
|
def draw_border_image_region(x, y, width, height, slice_x, slice_y, slice_width,
|
||||||
|
slice_height, repeat_x='stretch', repeat_y='stretch',
|
||||||
|
scale_x=None, scale_y=None):
|
||||||
|
if 0 in (intrinsic_width, width, slice_width):
|
||||||
|
scale_x = 0
|
||||||
|
else:
|
||||||
|
extra_dx = 0
|
||||||
|
if not scale_x:
|
||||||
|
scale_x = (height / slice_height) if height and slice_height else 1
|
||||||
|
if repeat_x == 'repeat':
|
||||||
|
n_repeats_x = ceil(width / slice_width / scale_x)
|
||||||
|
elif repeat_x == 'space':
|
||||||
|
n_repeats_x = floor(width / slice_width / scale_x)
|
||||||
|
# Space is before the first repeat and after the last,
|
||||||
|
# so there's one more space than repeat.
|
||||||
|
extra_dx = (
|
||||||
|
(width / scale_x - n_repeats_x * slice_width) / (n_repeats_x + 1))
|
||||||
|
elif repeat_x == 'round':
|
||||||
|
n_repeats_x = max(1, round(width / slice_width / scale_x))
|
||||||
|
scale_x = width / (n_repeats_x * slice_width)
|
||||||
|
else:
|
||||||
|
n_repeats_x = 1
|
||||||
|
scale_x = width / slice_width
|
||||||
|
|
||||||
|
if 0 in (intrinsic_height, height, slice_height):
|
||||||
|
scale_y = 0
|
||||||
|
else:
|
||||||
|
extra_dy = 0
|
||||||
|
if not scale_y:
|
||||||
|
scale_y = (width / slice_width) if width and slice_width else 1
|
||||||
|
if repeat_y == 'repeat':
|
||||||
|
n_repeats_y = ceil(height / slice_height / scale_y)
|
||||||
|
elif repeat_y == 'space':
|
||||||
|
n_repeats_y = floor(height / slice_height / scale_y)
|
||||||
|
# Space is before the first repeat and after the last,
|
||||||
|
# so there's one more space than repeat.
|
||||||
|
extra_dy = (
|
||||||
|
(height / scale_y - n_repeats_y * slice_height) / (n_repeats_y + 1))
|
||||||
|
elif repeat_y == 'round':
|
||||||
|
n_repeats_y = max(1, round(height / slice_height / scale_y))
|
||||||
|
scale_y = height / (n_repeats_y * slice_height)
|
||||||
|
else:
|
||||||
|
n_repeats_y = 1
|
||||||
|
scale_y = height / slice_height
|
||||||
|
|
||||||
|
if 0 in (scale_x, scale_y):
|
||||||
|
return scale_x, scale_y
|
||||||
|
|
||||||
|
rendered_width = intrinsic_width * scale_x
|
||||||
|
rendered_height = intrinsic_height * scale_y
|
||||||
|
offset_x = rendered_width * slice_x / intrinsic_width
|
||||||
|
offset_y = rendered_height * slice_y / intrinsic_height
|
||||||
|
|
||||||
|
with stacked(stream):
|
||||||
|
stream.rectangle(x, y, width, height)
|
||||||
|
stream.clip()
|
||||||
|
stream.end()
|
||||||
|
stream.transform(e=x - offset_x + extra_dx, f=y - offset_y + extra_dy)
|
||||||
|
stream.transform(a=scale_x, d=scale_y)
|
||||||
|
for i in range(n_repeats_x):
|
||||||
|
for j in range(n_repeats_y):
|
||||||
|
with stacked(stream):
|
||||||
|
translate_x = i * (slice_width + extra_dx)
|
||||||
|
translate_y = j * (slice_height + extra_dy)
|
||||||
|
stream.transform(e=translate_x, f=translate_y)
|
||||||
|
stream.rectangle(
|
||||||
|
offset_x / scale_x, offset_y / scale_y,
|
||||||
|
slice_width, slice_height)
|
||||||
|
stream.clip()
|
||||||
|
stream.end()
|
||||||
|
image.draw(
|
||||||
|
stream, intrinsic_width, intrinsic_height,
|
||||||
|
box.style['image_rendering'])
|
||||||
|
|
||||||
|
return scale_x, scale_y
|
||||||
|
|
||||||
|
# Top left.
|
||||||
|
scale_left, scale_top = draw_border_image_region(
|
||||||
|
x, y, border_left, border_top, 0, 0, slice_left, slice_top)
|
||||||
|
# Top right.
|
||||||
|
draw_border_image_region(
|
||||||
|
x + w - border_right, y, border_right, border_top,
|
||||||
|
intrinsic_width - slice_right, 0, slice_right, slice_top)
|
||||||
|
# Bottom right.
|
||||||
|
scale_right, scale_bottom = draw_border_image_region(
|
||||||
|
x + w - border_right, y + h - border_bottom, border_right, border_bottom,
|
||||||
|
intrinsic_width - slice_right, intrinsic_height - slice_bottom,
|
||||||
|
slice_right, slice_bottom)
|
||||||
|
# Bottom left.
|
||||||
|
draw_border_image_region(
|
||||||
|
x, y + h - border_bottom, border_left, border_bottom,
|
||||||
|
0, intrinsic_height - slice_bottom, slice_left, slice_bottom)
|
||||||
|
if x_middle := slice_left + slice_right < intrinsic_width:
|
||||||
|
# Top middle.
|
||||||
|
draw_border_image_region(
|
||||||
|
x + border_left, y, w - border_left - border_right, border_top,
|
||||||
|
slice_left, 0, intrinsic_width - slice_left - slice_right,
|
||||||
|
slice_top, repeat_x=repeat_x)
|
||||||
|
# Bottom middle.
|
||||||
|
draw_border_image_region(
|
||||||
|
x + border_left, y + h - border_bottom,
|
||||||
|
w - border_left - border_right, border_bottom,
|
||||||
|
slice_left, intrinsic_height - slice_bottom,
|
||||||
|
intrinsic_width - slice_left - slice_right, slice_bottom,
|
||||||
|
repeat_x=repeat_x)
|
||||||
|
if y_middle := slice_top + slice_bottom < intrinsic_height:
|
||||||
|
# Right middle.
|
||||||
|
draw_border_image_region(
|
||||||
|
x + w - border_right, y + border_top,
|
||||||
|
border_right, h - border_top - border_bottom,
|
||||||
|
intrinsic_width - slice_right, slice_top,
|
||||||
|
slice_right, intrinsic_height - slice_top - slice_bottom,
|
||||||
|
repeat_y=repeat_y)
|
||||||
|
# Left middle.
|
||||||
|
draw_border_image_region(
|
||||||
|
x, y + border_top, border_left, h - border_top - border_bottom,
|
||||||
|
0, slice_top, slice_left,
|
||||||
|
intrinsic_height - slice_top - slice_bottom,
|
||||||
|
repeat_y=repeat_y)
|
||||||
|
if should_fill and x_middle and y_middle:
|
||||||
|
# Fill middle.
|
||||||
|
draw_border_image_region(
|
||||||
|
x + border_left, y + border_top, w - border_left - border_right,
|
||||||
|
h - border_top - border_bottom, slice_left, slice_top,
|
||||||
|
intrinsic_width - slice_left - slice_right,
|
||||||
|
intrinsic_height - slice_top - slice_bottom,
|
||||||
|
repeat_x=repeat_x, repeat_y=repeat_y,
|
||||||
|
scale_x=scale_left or scale_right, scale_y=scale_top or scale_bottom)
|
||||||
|
|
||||||
|
|
||||||
|
def clip_border_segment(stream, style, width, side, border_box,
|
||||||
|
border_widths=None, radii=None):
|
||||||
|
"""Clip one segment of box border.
|
||||||
|
|
||||||
|
The strategy is to remove the zones not needed because of the style or the
|
||||||
|
side before painting.
|
||||||
|
|
||||||
|
"""
|
||||||
|
bbx, bby, bbw, bbh = border_box
|
||||||
|
(tlh, tlv), (trh, trv), (brh, brv), (blh, blv) = radii or 4 * ((0, 0),)
|
||||||
|
bt, br, bb, bl = border_widths or 4 * (width,)
|
||||||
|
|
||||||
|
def transition_point(x1, y1, x2, y2):
|
||||||
|
"""Get the point use for border transition.
|
||||||
|
|
||||||
|
The extra boolean returned is ``True`` if the point is in the padding
|
||||||
|
box (ie. the padding box is rounded).
|
||||||
|
|
||||||
|
This point is not specified. We must be sure to be inside the rounded
|
||||||
|
padding box, and in the zone defined in the "transition zone" allowed
|
||||||
|
by the specification. We chose the corner of the transition zone. It's
|
||||||
|
easy to get and gives quite good results, but it seems to be different
|
||||||
|
from what other browsers do.
|
||||||
|
|
||||||
|
"""
|
||||||
|
return (
|
||||||
|
((x1, y1), True) if abs(x1) > abs(x2) and abs(y1) > abs(y2)
|
||||||
|
else ((x2, y2), False))
|
||||||
|
|
||||||
|
def corner_half_length(a, b):
|
||||||
|
"""Return the length of the half of one ellipsis corner.
|
||||||
|
|
||||||
|
Inspired by [Ramanujan, S., "Modular Equations and Approximations to
|
||||||
|
pi" Quart. J. Pure. Appl. Math., vol. 45 (1913-1914), pp. 350-372],
|
||||||
|
wonderfully explained by Dr Rob.
|
||||||
|
|
||||||
|
https://mathforum.org/dr.math/faq/formulas/
|
||||||
|
|
||||||
|
"""
|
||||||
|
x = (a - b) / (a + b)
|
||||||
|
return pi / 8 * (a + b) * (
|
||||||
|
1 + 3 * x ** 2 / (10 + sqrt(4 - 3 * x ** 2)))
|
||||||
|
|
||||||
|
if side == 'top':
|
||||||
|
(px1, py1), rounded1 = transition_point(tlh, tlv, bl, bt)
|
||||||
|
(px2, py2), rounded2 = transition_point(-trh, trv, -br, bt)
|
||||||
|
width = bt
|
||||||
|
way = 1
|
||||||
|
angle = 1
|
||||||
|
main_offset = bby
|
||||||
|
elif side == 'right':
|
||||||
|
(px1, py1), rounded1 = transition_point(-trh, trv, -br, bt)
|
||||||
|
(px2, py2), rounded2 = transition_point(-brh, -brv, -br, -bb)
|
||||||
|
width = br
|
||||||
|
way = 1
|
||||||
|
angle = 2
|
||||||
|
main_offset = bbx + bbw
|
||||||
|
elif side == 'bottom':
|
||||||
|
(px1, py1), rounded1 = transition_point(blh, -blv, bl, -bb)
|
||||||
|
(px2, py2), rounded2 = transition_point(-brh, -brv, -br, -bb)
|
||||||
|
width = bb
|
||||||
|
way = -1
|
||||||
|
angle = 3
|
||||||
|
main_offset = bby + bbh
|
||||||
|
elif side == 'left':
|
||||||
|
(px1, py1), rounded1 = transition_point(tlh, tlv, bl, bt)
|
||||||
|
(px2, py2), rounded2 = transition_point(blh, -blv, bl, -bb)
|
||||||
|
width = bl
|
||||||
|
way = -1
|
||||||
|
angle = 4
|
||||||
|
main_offset = bbx
|
||||||
|
|
||||||
|
if side in ('top', 'bottom'):
|
||||||
|
a1, b1 = px1 - bl / 2, way * py1 - width / 2
|
||||||
|
a2, b2 = -px2 - br / 2, way * py2 - width / 2
|
||||||
|
line_length = bbw - px1 + px2
|
||||||
|
length = bbw
|
||||||
|
stream.move_to(bbx + bbw, main_offset)
|
||||||
|
stream.line_to(bbx, main_offset)
|
||||||
|
stream.line_to(bbx + px1, main_offset + py1)
|
||||||
|
stream.line_to(bbx + bbw + px2, main_offset + py2)
|
||||||
|
elif side in ('left', 'right'):
|
||||||
|
a1, b1 = -way * px1 - width / 2, py1 - bt / 2
|
||||||
|
a2, b2 = -way * px2 - width / 2, -py2 - bb / 2
|
||||||
|
line_length = bbh - py1 + py2
|
||||||
|
length = bbh
|
||||||
|
stream.move_to(main_offset, bby + bbh)
|
||||||
|
stream.line_to(main_offset, bby)
|
||||||
|
stream.line_to(main_offset + px1, bby + py1)
|
||||||
|
stream.line_to(main_offset + px2, bby + bbh + py2)
|
||||||
|
|
||||||
|
if style in ('dotted', 'dashed'):
|
||||||
|
dash = width if style == 'dotted' else 3 * width
|
||||||
|
if rounded1 or rounded2:
|
||||||
|
# At least one of the two corners is rounded
|
||||||
|
chl1 = corner_half_length(a1, b1)
|
||||||
|
chl2 = corner_half_length(a2, b2)
|
||||||
|
length = line_length + chl1 + chl2
|
||||||
|
dash_length = round(length / dash)
|
||||||
|
if rounded1 and rounded2:
|
||||||
|
# 2x dashes
|
||||||
|
dash = length / (dash_length + dash_length % 2)
|
||||||
|
else:
|
||||||
|
# 2x - 1/2 dashes
|
||||||
|
dash = length / (dash_length + dash_length % 2 - 0.5)
|
||||||
|
dashes1 = int(ceil((chl1 - dash / 2) / dash))
|
||||||
|
dashes2 = int(ceil((chl2 - dash / 2) / dash))
|
||||||
|
line = int(floor(line_length / dash))
|
||||||
|
|
||||||
|
def draw_dots(dashes, line, way, x, y, px, py, chl):
|
||||||
|
if not dashes:
|
||||||
|
return line + 1, 0
|
||||||
|
for i in range(0, dashes, 2):
|
||||||
|
i += 0.5 # half dash
|
||||||
|
angle1 = (
|
||||||
|
((2 * angle - way) + i * way * dash / chl) /
|
||||||
|
4 * pi)
|
||||||
|
angle2 = (min if way > 0 else max)(
|
||||||
|
((2 * angle - way) + (i + 1) * way * dash / chl) /
|
||||||
|
4 * pi,
|
||||||
|
angle * pi / 2)
|
||||||
|
if side in ('top', 'bottom'):
|
||||||
|
stream.move_to(x + px, main_offset + py)
|
||||||
|
stream.line_to(
|
||||||
|
x + px - way * px * 1 / tan(angle2), main_offset)
|
||||||
|
stream.line_to(
|
||||||
|
x + px - way * px * 1 / tan(angle1), main_offset)
|
||||||
|
elif side in ('left', 'right'):
|
||||||
|
stream.move_to(main_offset + px, y + py)
|
||||||
|
stream.line_to(
|
||||||
|
main_offset, y + py + way * py * tan(angle2))
|
||||||
|
stream.line_to(
|
||||||
|
main_offset, y + py + way * py * tan(angle1))
|
||||||
|
if angle2 == angle * pi / 2:
|
||||||
|
offset = (angle1 - angle2) / ((
|
||||||
|
((2 * angle - way) + (i + 1) * way * dash / chl) /
|
||||||
|
4 * pi) - angle1)
|
||||||
|
line += 1
|
||||||
|
break
|
||||||
|
else:
|
||||||
|
offset = 1 - (
|
||||||
|
(angle * pi / 2 - angle2) / (angle2 - angle1))
|
||||||
|
return line, offset
|
||||||
|
|
||||||
|
line, offset = draw_dots(
|
||||||
|
dashes1, line, way, bbx, bby, px1, py1, chl1)
|
||||||
|
line = draw_dots(
|
||||||
|
dashes2, line, -way, bbx + bbw, bby + bbh, px2, py2, chl2)[0]
|
||||||
|
|
||||||
|
if line_length > 1e-6:
|
||||||
|
for i in range(0, line, 2):
|
||||||
|
i += offset
|
||||||
|
if side in ('top', 'bottom'):
|
||||||
|
x1 = max(bbx + px1 + i * dash, bbx + px1)
|
||||||
|
x2 = min(bbx + px1 + (i + 1) * dash, bbx + bbw + px2)
|
||||||
|
y1 = main_offset - (width if way < 0 else 0)
|
||||||
|
y2 = y1 + width
|
||||||
|
elif side in ('left', 'right'):
|
||||||
|
y1 = max(bby + py1 + i * dash, bby + py1)
|
||||||
|
y2 = min(bby + py1 + (i + 1) * dash, bby + bbh + py2)
|
||||||
|
x1 = main_offset - (width if way > 0 else 0)
|
||||||
|
x2 = x1 + width
|
||||||
|
stream.rectangle(x1, y1, x2 - x1, y2 - y1)
|
||||||
|
else:
|
||||||
|
# 2x + 1 dashes
|
||||||
|
stream.clip(even_odd=True)
|
||||||
|
stream.end()
|
||||||
|
dash = length / (
|
||||||
|
round(length / dash) - (round(length / dash) + 1) % 2) or 1
|
||||||
|
for i in range(0, int(round(length / dash)), 2):
|
||||||
|
if side == 'top':
|
||||||
|
stream.rectangle(bbx + i * dash, bby, dash, width)
|
||||||
|
elif side == 'right':
|
||||||
|
stream.rectangle(
|
||||||
|
bbx + bbw - width, bby + i * dash, width, dash)
|
||||||
|
elif side == 'bottom':
|
||||||
|
stream.rectangle(
|
||||||
|
bbx + i * dash, bby + bbh - width, dash, width)
|
||||||
|
elif side == 'left':
|
||||||
|
stream.rectangle(bbx, bby + i * dash, width, dash)
|
||||||
|
stream.clip(even_odd=True)
|
||||||
|
stream.end()
|
||||||
|
|
||||||
|
|
||||||
|
def draw_rounded_border(stream, box, style, color):
|
||||||
|
if style in ('ridge', 'groove'):
|
||||||
|
stream.set_color_rgb(*color[0][:3])
|
||||||
|
stream.set_alpha(color[0][3])
|
||||||
|
rounded_box(stream, box.rounded_padding_box())
|
||||||
|
rounded_box(stream, box.rounded_box_ratio(1 / 2))
|
||||||
|
stream.fill(even_odd=True)
|
||||||
|
stream.set_color_rgb(*color[1][:3])
|
||||||
|
stream.set_alpha(color[1][3])
|
||||||
|
rounded_box(stream, box.rounded_box_ratio(1 / 2))
|
||||||
|
rounded_box(stream, box.rounded_border_box())
|
||||||
|
stream.fill(even_odd=True)
|
||||||
|
return
|
||||||
|
stream.set_color_rgb(*color[:3])
|
||||||
|
stream.set_alpha(color[3])
|
||||||
|
rounded_box(stream, box.rounded_padding_box())
|
||||||
|
if style == 'double':
|
||||||
|
rounded_box(stream, box.rounded_box_ratio(1 / 3))
|
||||||
|
rounded_box(stream, box.rounded_box_ratio(2 / 3))
|
||||||
|
rounded_box(stream, box.rounded_border_box())
|
||||||
|
stream.fill(even_odd=True)
|
||||||
|
|
||||||
|
|
||||||
|
def draw_rect_border(stream, box, widths, style, color):
|
||||||
|
bbx, bby, bbw, bbh = box
|
||||||
|
bt, br, bb, bl = widths
|
||||||
|
if style in ('ridge', 'groove'):
|
||||||
|
stream.set_color_rgb(*color[0][:3])
|
||||||
|
stream.set_alpha(color[0][3])
|
||||||
|
stream.rectangle(*box)
|
||||||
|
stream.rectangle(
|
||||||
|
bbx + bl / 2, bby + bt / 2,
|
||||||
|
bbw - (bl + br) / 2, bbh - (bt + bb) / 2)
|
||||||
|
stream.fill(even_odd=True)
|
||||||
|
stream.rectangle(
|
||||||
|
bbx + bl / 2, bby + bt / 2,
|
||||||
|
bbw - (bl + br) / 2, bbh - (bt + bb) / 2)
|
||||||
|
stream.rectangle(bbx + bl, bby + bt, bbw - bl - br, bbh - bt - bb)
|
||||||
|
stream.set_color_rgb(*color[1][:3])
|
||||||
|
stream.set_alpha(color[1][3])
|
||||||
|
stream.fill(even_odd=True)
|
||||||
|
return
|
||||||
|
stream.set_color_rgb(*color[:3])
|
||||||
|
stream.set_alpha(color[3])
|
||||||
|
stream.rectangle(*box)
|
||||||
|
if style == 'double':
|
||||||
|
stream.rectangle(
|
||||||
|
bbx + bl / 3, bby + bt / 3,
|
||||||
|
bbw - (bl + br) / 3, bbh - (bt + bb) / 3)
|
||||||
|
stream.rectangle(
|
||||||
|
bbx + bl * 2 / 3, bby + bt * 2 / 3,
|
||||||
|
bbw - (bl + br) * 2 / 3, bbh - (bt + bb) * 2 / 3)
|
||||||
|
stream.rectangle(bbx + bl, bby + bt, bbw - bl - br, bbh - bt - bb)
|
||||||
|
stream.fill(even_odd=True)
|
||||||
|
|
||||||
|
|
||||||
|
def draw_line(stream, x1, y1, x2, y2, thickness, style, color, offset=0):
|
||||||
|
assert x1 == x2 or y1 == y2 # Only works for vertical or horizontal lines
|
||||||
|
|
||||||
|
with stacked(stream):
|
||||||
|
if style not in ('ridge', 'groove'):
|
||||||
|
stream.set_color_rgb(*color[:3], stroke=True)
|
||||||
|
stream.set_alpha(color[3], stroke=True)
|
||||||
|
|
||||||
|
if style == 'dashed':
|
||||||
|
stream.set_dash([5 * thickness], offset)
|
||||||
|
elif style == 'dotted':
|
||||||
|
stream.set_dash([thickness], offset)
|
||||||
|
|
||||||
|
if style == 'double':
|
||||||
|
stream.set_line_width(thickness / 3)
|
||||||
|
if x1 == x2:
|
||||||
|
stream.move_to(x1 - thickness / 3, y1)
|
||||||
|
stream.line_to(x2 - thickness / 3, y2)
|
||||||
|
stream.move_to(x1 + thickness / 3, y1)
|
||||||
|
stream.line_to(x2 + thickness / 3, y2)
|
||||||
|
elif y1 == y2:
|
||||||
|
stream.move_to(x1, y1 - thickness / 3)
|
||||||
|
stream.line_to(x2, y2 - thickness / 3)
|
||||||
|
stream.move_to(x1, y1 + thickness / 3)
|
||||||
|
stream.line_to(x2, y2 + thickness / 3)
|
||||||
|
elif style in ('ridge', 'groove'):
|
||||||
|
stream.set_line_width(thickness / 2)
|
||||||
|
stream.set_color_rgb(*color[0][:3], stroke=True)
|
||||||
|
stream.set_alpha(color[0][3], stroke=True)
|
||||||
|
if x1 == x2:
|
||||||
|
stream.move_to(x1 + thickness / 4, y1)
|
||||||
|
stream.line_to(x2 + thickness / 4, y2)
|
||||||
|
elif y1 == y2:
|
||||||
|
stream.move_to(x1, y1 + thickness / 4)
|
||||||
|
stream.line_to(x2, y2 + thickness / 4)
|
||||||
|
stream.stroke()
|
||||||
|
stream.set_color_rgb(*color[1][:3], stroke=True)
|
||||||
|
stream.set_alpha(color[1][3], stroke=True)
|
||||||
|
if x1 == x2:
|
||||||
|
stream.move_to(x1 - thickness / 4, y1)
|
||||||
|
stream.line_to(x2 - thickness / 4, y2)
|
||||||
|
elif y1 == y2:
|
||||||
|
stream.move_to(x1, y1 - thickness / 4)
|
||||||
|
stream.line_to(x2, y2 - thickness / 4)
|
||||||
|
elif style == 'wavy':
|
||||||
|
assert y1 == y2 # Only allowed for text decoration
|
||||||
|
up = 1
|
||||||
|
radius = 0.75 * thickness
|
||||||
|
|
||||||
|
stream.rectangle(x1, y1 - 2 * radius, x2 - x1, 4 * radius)
|
||||||
|
stream.clip()
|
||||||
|
stream.end()
|
||||||
|
|
||||||
|
x = x1 - offset
|
||||||
|
stream.move_to(x, y1)
|
||||||
|
while x < x2:
|
||||||
|
stream.curve_to(
|
||||||
|
x + radius / 2, y1 + up * radius,
|
||||||
|
x + 3 * radius / 2, y1 + up * radius,
|
||||||
|
x + 2 * radius, y1)
|
||||||
|
x += 2 * radius
|
||||||
|
up *= -1
|
||||||
|
else:
|
||||||
|
stream.set_line_width(thickness)
|
||||||
|
stream.move_to(x1, y1)
|
||||||
|
stream.line_to(x2, y2)
|
||||||
|
stream.stroke()
|
||||||
|
|
||||||
|
|
||||||
|
def draw_outline(stream, box):
|
||||||
|
width = box.style['outline_width']
|
||||||
|
color = get_color(box.style, 'outline_color')
|
||||||
|
style = box.style['outline_style']
|
||||||
|
if box.style['visibility'] == 'visible' and width and color.alpha:
|
||||||
|
outline_box = (
|
||||||
|
box.border_box_x() - width, box.border_box_y() - width,
|
||||||
|
box.border_width() + 2 * width, box.border_height() + 2 * width)
|
||||||
|
for side in SIDES:
|
||||||
|
with stacked(stream):
|
||||||
|
clip_border_segment(stream, style, width, side, outline_box)
|
||||||
|
draw_rect_border(
|
||||||
|
stream, outline_box, 4 * (width,), style,
|
||||||
|
styled_color(style, color, side))
|
||||||
|
|
||||||
|
for child in box.children:
|
||||||
|
if isinstance(child, boxes.Box):
|
||||||
|
draw_outline(stream, child)
|
||||||
|
|
||||||
|
|
||||||
|
def rounded_box(stream, radii):
|
||||||
|
"""Draw the path of the border radius box.
|
||||||
|
|
||||||
|
``widths`` is a tuple of the inner widths (top, right, bottom, left) from
|
||||||
|
the border box. Radii are adjusted from these values. Default is (0, 0, 0,
|
||||||
|
0).
|
||||||
|
|
||||||
|
"""
|
||||||
|
x, y, w, h, tl, tr, br, bl = radii
|
||||||
|
|
||||||
|
if all(0 in corner for corner in (tl, tr, br, bl)):
|
||||||
|
# No radius, draw a rectangle
|
||||||
|
stream.rectangle(x, y, w, h)
|
||||||
|
return
|
||||||
|
|
||||||
|
r = 0.45
|
||||||
|
|
||||||
|
stream.move_to(x + tl[0], y)
|
||||||
|
stream.line_to(x + w - tr[0], y)
|
||||||
|
stream.curve_to(
|
||||||
|
x + w - tr[0] * r, y, x + w, y + tr[1] * r, x + w, y + tr[1])
|
||||||
|
stream.line_to(x + w, y + h - br[1])
|
||||||
|
stream.curve_to(
|
||||||
|
x + w, y + h - br[1] * r, x + w - br[0] * r, y + h, x + w - br[0],
|
||||||
|
y + h)
|
||||||
|
stream.line_to(x + bl[0], y + h)
|
||||||
|
stream.curve_to(
|
||||||
|
x + bl[0] * r, y + h, x, y + h - bl[1] * r, x, y + h - bl[1])
|
||||||
|
stream.line_to(x, y + tl[1])
|
||||||
|
stream.curve_to(
|
||||||
|
x, y + tl[1] * r, x + tl[0] * r, y, x + tl[0], y)
|
39
weasyprint/draw/color.py
Normal file
39
weasyprint/draw/color.py
Normal file
@ -0,0 +1,39 @@
|
|||||||
|
"""Draw colors."""
|
||||||
|
|
||||||
|
from colorsys import hsv_to_rgb, rgb_to_hsv
|
||||||
|
|
||||||
|
|
||||||
|
def get_color(style, key):
|
||||||
|
"""Return color, taking care of possible currentColor value."""
|
||||||
|
value = style[key]
|
||||||
|
return value if value != 'currentColor' else style['color']
|
||||||
|
|
||||||
|
|
||||||
|
def darken(color):
|
||||||
|
"""Return a darker color."""
|
||||||
|
hue, saturation, value = rgb_to_hsv(color.red, color.green, color.blue)
|
||||||
|
value /= 1.5
|
||||||
|
saturation /= 1.25
|
||||||
|
return (*hsv_to_rgb(hue, saturation, value), color.alpha)
|
||||||
|
|
||||||
|
|
||||||
|
def lighten(color):
|
||||||
|
"""Return a lighter color."""
|
||||||
|
hue, saturation, value = rgb_to_hsv(color.red, color.green, color.blue)
|
||||||
|
value = 1 - (1 - value) / 1.5
|
||||||
|
if saturation:
|
||||||
|
saturation = 1 - (1 - saturation) / 1.25
|
||||||
|
return (*hsv_to_rgb(hue, saturation, value), color.alpha)
|
||||||
|
|
||||||
|
|
||||||
|
def styled_color(style, color, side):
|
||||||
|
"""Return inset, outset, ridge and groove border colors."""
|
||||||
|
if style in ('inset', 'outset'):
|
||||||
|
do_lighten = (side in ('top', 'left')) ^ (style == 'inset')
|
||||||
|
return (lighten if do_lighten else darken)(color)
|
||||||
|
elif style in ('ridge', 'groove'):
|
||||||
|
if (side in ('top', 'left')) ^ (style == 'ridge'):
|
||||||
|
return lighten(color), darken(color)
|
||||||
|
else:
|
||||||
|
return darken(color), lighten(color)
|
||||||
|
return color
|
13
weasyprint/draw/stack.py
Normal file
13
weasyprint/draw/stack.py
Normal file
@ -0,0 +1,13 @@
|
|||||||
|
"""Drawing stack context manager."""
|
||||||
|
|
||||||
|
from contextlib import contextmanager
|
||||||
|
|
||||||
|
|
||||||
|
@contextmanager
|
||||||
|
def stacked(stream):
|
||||||
|
"""Save and restore stream context when used with the ``with`` keyword."""
|
||||||
|
stream.push_state()
|
||||||
|
try:
|
||||||
|
yield
|
||||||
|
finally:
|
||||||
|
stream.pop_state()
|
264
weasyprint/draw/text.py
Normal file
264
weasyprint/draw/text.py
Normal file
@ -0,0 +1,264 @@
|
|||||||
|
"""Draw text."""
|
||||||
|
|
||||||
|
from io import BytesIO
|
||||||
|
from xml.etree import ElementTree
|
||||||
|
|
||||||
|
from PIL import Image
|
||||||
|
|
||||||
|
from ..images import RasterImage, SVGImage
|
||||||
|
from ..matrix import Matrix
|
||||||
|
from ..text.ffi import ffi, pango, units_from_double, units_to_double
|
||||||
|
from ..text.fonts import get_hb_object_data
|
||||||
|
from ..text.line_break import get_last_word_end
|
||||||
|
from .border import draw_line
|
||||||
|
from .color import get_color
|
||||||
|
from .stack import stacked
|
||||||
|
|
||||||
|
|
||||||
|
def draw_text(stream, textbox, offset_x, text_overflow, block_ellipsis):
|
||||||
|
"""Draw a textbox to a pydyf stream."""
|
||||||
|
# Pango crashes with font-size: 0.
|
||||||
|
assert textbox.style['font_size']
|
||||||
|
|
||||||
|
# Don’t draw invisible textboxes.
|
||||||
|
if textbox.style['visibility'] != 'visible':
|
||||||
|
return
|
||||||
|
|
||||||
|
# Draw underline and overline.
|
||||||
|
text_decoration_values = textbox.style['text_decoration_line']
|
||||||
|
text_decoration_color = get_color(textbox.style, 'text_decoration_color')
|
||||||
|
if 'overline' in text_decoration_values:
|
||||||
|
thickness = textbox.pango_layout.underline_thickness
|
||||||
|
offset_y = (
|
||||||
|
textbox.baseline - textbox.pango_layout.ascent + thickness / 2)
|
||||||
|
draw_text_decoration(
|
||||||
|
stream, textbox, offset_x, offset_y, thickness,
|
||||||
|
text_decoration_color)
|
||||||
|
if 'underline' in text_decoration_values:
|
||||||
|
thickness = textbox.pango_layout.underline_thickness
|
||||||
|
offset_y = (
|
||||||
|
textbox.baseline - textbox.pango_layout.underline_position +
|
||||||
|
thickness / 2)
|
||||||
|
draw_text_decoration(
|
||||||
|
stream, textbox, offset_x, offset_y, thickness,
|
||||||
|
text_decoration_color)
|
||||||
|
|
||||||
|
# Draw text.
|
||||||
|
x, y = textbox.position_x, textbox.position_y + textbox.baseline
|
||||||
|
stream.set_color_rgb(*textbox.style['color'][:3])
|
||||||
|
stream.set_alpha(textbox.style['color'][3])
|
||||||
|
textbox.pango_layout.reactivate(textbox.style)
|
||||||
|
stream.begin_text()
|
||||||
|
emojis = draw_first_line(
|
||||||
|
stream, textbox, text_overflow, block_ellipsis, Matrix(d=-1, e=x, f=y))
|
||||||
|
stream.end_text()
|
||||||
|
|
||||||
|
# Draw emojis.
|
||||||
|
draw_emojis(stream, textbox.style['font_size'], x, y, emojis)
|
||||||
|
|
||||||
|
# Draw line through.
|
||||||
|
if 'line-through' in text_decoration_values:
|
||||||
|
thickness = textbox.pango_layout.strikethrough_thickness
|
||||||
|
offset_y = textbox.baseline - textbox.pango_layout.strikethrough_position
|
||||||
|
draw_text_decoration(
|
||||||
|
stream, textbox, offset_x, offset_y, thickness, text_decoration_color)
|
||||||
|
textbox.pango_layout.deactivate()
|
||||||
|
|
||||||
|
|
||||||
|
def draw_emojis(stream, font_size, x, y, emojis):
|
||||||
|
"""Draw list of emojis."""
|
||||||
|
for image, font, a, d, e, f in emojis:
|
||||||
|
with stacked(stream):
|
||||||
|
stream.transform(a=a, d=d, e=x + e * font_size, f=y + f)
|
||||||
|
image.draw(stream, font_size, font_size, None)
|
||||||
|
|
||||||
|
|
||||||
|
def draw_first_line(stream, textbox, text_overflow, block_ellipsis, matrix):
|
||||||
|
"""Draw the given ``textbox`` line to the document ``stream``."""
|
||||||
|
# Don’t draw lines with only invisible characters.
|
||||||
|
if not textbox.text.strip():
|
||||||
|
return []
|
||||||
|
|
||||||
|
font_size = textbox.style['font_size']
|
||||||
|
if font_size < 1e-6: # default float precision used by pydyf
|
||||||
|
return []
|
||||||
|
|
||||||
|
pango.pango_layout_set_single_paragraph_mode(textbox.pango_layout.layout, True)
|
||||||
|
|
||||||
|
if text_overflow == 'ellipsis' or block_ellipsis != 'none':
|
||||||
|
assert textbox.pango_layout.max_width is not None
|
||||||
|
max_width = textbox.pango_layout.max_width
|
||||||
|
pango.pango_layout_set_width(
|
||||||
|
textbox.pango_layout.layout, units_from_double(max_width))
|
||||||
|
if text_overflow == 'ellipsis':
|
||||||
|
pango.pango_layout_set_ellipsize(
|
||||||
|
textbox.pango_layout.layout, pango.PANGO_ELLIPSIZE_END)
|
||||||
|
else:
|
||||||
|
if block_ellipsis == 'auto':
|
||||||
|
ellipsis = '…'
|
||||||
|
else:
|
||||||
|
assert block_ellipsis[0] == 'string'
|
||||||
|
ellipsis = block_ellipsis[1]
|
||||||
|
|
||||||
|
# Remove last word if hyphenated.
|
||||||
|
new_text = textbox.pango_layout.text
|
||||||
|
if new_text.endswith(textbox.style['hyphenate_character']):
|
||||||
|
last_word_end = get_last_word_end(
|
||||||
|
new_text[:-len(textbox.style['hyphenate_character'])],
|
||||||
|
textbox.style['lang'])
|
||||||
|
if last_word_end:
|
||||||
|
new_text = new_text[:last_word_end]
|
||||||
|
|
||||||
|
textbox.pango_layout.set_text(new_text + ellipsis)
|
||||||
|
|
||||||
|
first_line, index = textbox.pango_layout.get_first_line()
|
||||||
|
|
||||||
|
if block_ellipsis != 'none':
|
||||||
|
while index:
|
||||||
|
last_word_end = get_last_word_end(
|
||||||
|
textbox.pango_layout.text[:-len(ellipsis)],
|
||||||
|
textbox.style['lang'])
|
||||||
|
if last_word_end is None:
|
||||||
|
break
|
||||||
|
new_text = textbox.pango_layout.text[:last_word_end]
|
||||||
|
textbox.pango_layout.set_text(new_text + ellipsis)
|
||||||
|
first_line, index = textbox.pango_layout.get_first_line()
|
||||||
|
|
||||||
|
utf8_text = textbox.pango_layout.text.encode()
|
||||||
|
previous_utf8_position = 0
|
||||||
|
stream.text_matrix(*matrix.values)
|
||||||
|
last_font = None
|
||||||
|
string = ''
|
||||||
|
x_advance = 0
|
||||||
|
emojis = []
|
||||||
|
run = first_line.runs[0]
|
||||||
|
while run != ffi.NULL:
|
||||||
|
# Get Pango objects.
|
||||||
|
glyph_item = run.data
|
||||||
|
run = run.next
|
||||||
|
glyph_string = glyph_item.glyphs
|
||||||
|
glyphs = glyph_string.glyphs
|
||||||
|
num_glyphs = glyph_string.num_glyphs
|
||||||
|
offset = glyph_item.item.offset
|
||||||
|
clusters = glyph_string.log_clusters
|
||||||
|
|
||||||
|
# Add font file content.
|
||||||
|
pango_font = glyph_item.item.analysis.font
|
||||||
|
font = stream.add_font(pango_font)
|
||||||
|
|
||||||
|
# Get positions of the glyphs in the UTF-8 string.
|
||||||
|
utf8_positions = [offset + clusters[i] for i in range(1, num_glyphs)]
|
||||||
|
utf8_positions.append(offset + glyph_item.item.length)
|
||||||
|
|
||||||
|
# Go through the run glyphs.
|
||||||
|
if font != last_font:
|
||||||
|
if string:
|
||||||
|
stream.show_text(string)
|
||||||
|
string = ''
|
||||||
|
stream.set_font_size(font.hash, 1 if font.bitmap else font_size)
|
||||||
|
last_font = font
|
||||||
|
string += '<'
|
||||||
|
for i in range(num_glyphs):
|
||||||
|
glyph_info = glyphs[i]
|
||||||
|
glyph = glyph_info.glyph
|
||||||
|
width = glyph_info.geometry.width
|
||||||
|
if (glyph == pango.PANGO_GLYPH_EMPTY or
|
||||||
|
glyph & pango.PANGO_GLYPH_UNKNOWN_FLAG):
|
||||||
|
string += f'>{-width / font_size}<'
|
||||||
|
continue
|
||||||
|
utf8_position = utf8_positions[i]
|
||||||
|
|
||||||
|
offset = glyph_info.geometry.x_offset / font_size
|
||||||
|
rise = glyph_info.geometry.y_offset / 1000
|
||||||
|
if rise:
|
||||||
|
if string[-1] == '<':
|
||||||
|
string = string[:-1]
|
||||||
|
else:
|
||||||
|
string += '>'
|
||||||
|
stream.show_text(string)
|
||||||
|
stream.set_text_rise(-rise)
|
||||||
|
string = ''
|
||||||
|
if offset:
|
||||||
|
string = f'{-offset}'
|
||||||
|
string += f'<{glyph:02x}>' if font.bitmap else f'<{glyph:04x}>'
|
||||||
|
stream.show_text(string)
|
||||||
|
stream.set_text_rise(0)
|
||||||
|
string = '<'
|
||||||
|
else:
|
||||||
|
if offset:
|
||||||
|
string += f'>{-offset}<'
|
||||||
|
string += f'{glyph:02x}' if font.bitmap else f'{glyph:04x}'
|
||||||
|
|
||||||
|
# Get ink bounding box and logical widths in font.
|
||||||
|
if glyph not in font.widths:
|
||||||
|
pango.pango_font_get_glyph_extents(
|
||||||
|
pango_font, glyph, stream.ink_rect, stream.logical_rect)
|
||||||
|
font.widths[glyph] = int(round(
|
||||||
|
units_to_double(stream.logical_rect.width * 1000) /
|
||||||
|
font_size))
|
||||||
|
|
||||||
|
# Set kerning, word spacing, letter spacing.
|
||||||
|
kerning = int(
|
||||||
|
font.widths[glyph] - units_to_double(width * 1000) / font_size + offset)
|
||||||
|
if kerning:
|
||||||
|
string += f'>{kerning}<'
|
||||||
|
|
||||||
|
# Create mapping between glyphs and characters.
|
||||||
|
if glyph not in font.cmap:
|
||||||
|
utf8_slice = slice(previous_utf8_position, utf8_position)
|
||||||
|
font.cmap[glyph] = utf8_text[utf8_slice].decode()
|
||||||
|
previous_utf8_position = utf8_position
|
||||||
|
|
||||||
|
# Create list of emojis.
|
||||||
|
if font.svg:
|
||||||
|
svg_data = get_hb_object_data(font.hb_face, 'svg', glyph)
|
||||||
|
if svg_data:
|
||||||
|
# Do as explained in specification
|
||||||
|
# https://learn.microsoft.com/typography/opentype/spec/svg
|
||||||
|
tree = ElementTree.fromstring(svg_data)
|
||||||
|
defs = ElementTree.Element('defs')
|
||||||
|
for child in list(tree):
|
||||||
|
defs.append(child)
|
||||||
|
tree.remove(child)
|
||||||
|
tree.append(defs)
|
||||||
|
ElementTree.SubElement(
|
||||||
|
tree, 'use', attrib={'href': f'#glyph{glyph}'})
|
||||||
|
image = SVGImage(tree, None, None, stream)
|
||||||
|
a = d = font.widths[glyph] / 1000 / font.upem * font_size
|
||||||
|
emojis.append([image, font, a, d, x_advance, 0])
|
||||||
|
elif font.png:
|
||||||
|
png_data = get_hb_object_data(font.hb_font, 'png', glyph)
|
||||||
|
if png_data:
|
||||||
|
pillow_image = Image.open(BytesIO(png_data))
|
||||||
|
image_id = f'{font.hash}{glyph}'
|
||||||
|
image = RasterImage(pillow_image, image_id, png_data)
|
||||||
|
d = font.widths[glyph] / 1000
|
||||||
|
a = pillow_image.width / pillow_image.height * d
|
||||||
|
pango.pango_font_get_glyph_extents(
|
||||||
|
pango_font, glyph, stream.ink_rect,
|
||||||
|
stream.logical_rect)
|
||||||
|
f = units_to_double(
|
||||||
|
(-stream.logical_rect.y - stream.logical_rect.height))
|
||||||
|
f = f / font_size - font_size
|
||||||
|
emojis.append([image, font, a, d, x_advance, f])
|
||||||
|
|
||||||
|
x_advance += (font.widths[glyph] + offset - kerning) / 1000
|
||||||
|
|
||||||
|
# Close the last glyphs list, remove if empty.
|
||||||
|
if string[-1] == '<':
|
||||||
|
string = string[:-1]
|
||||||
|
else:
|
||||||
|
string += '>'
|
||||||
|
|
||||||
|
# Draw text.
|
||||||
|
stream.show_text(string)
|
||||||
|
|
||||||
|
return emojis
|
||||||
|
|
||||||
|
|
||||||
|
def draw_text_decoration(stream, textbox, offset_x, offset_y, thickness, color):
|
||||||
|
"""Draw text-decoration of ``textbox`` to a ``document.Stream``."""
|
||||||
|
draw_line(
|
||||||
|
stream, textbox.position_x, textbox.position_y + offset_y,
|
||||||
|
textbox.position_x + textbox.width, textbox.position_y + offset_y,
|
||||||
|
thickness, textbox.style['text_decoration_style'], color, offset_x)
|
@ -35,7 +35,7 @@ def box_rectangle(box, which_rectangle):
|
|||||||
def layout_box_backgrounds(page, box, get_image_from_uri, layout_children=True,
|
def layout_box_backgrounds(page, box, get_image_from_uri, layout_children=True,
|
||||||
style=None):
|
style=None):
|
||||||
"""Fetch and position background images."""
|
"""Fetch and position background images."""
|
||||||
from ..draw import get_color
|
from ..draw.color import get_color
|
||||||
|
|
||||||
# Resolve percentages in border-radius properties
|
# Resolve percentages in border-radius properties
|
||||||
resolve_radii_percentages(box)
|
resolve_radii_percentages(box)
|
||||||
|
@ -949,7 +949,7 @@ def collapse_table_borders(table, grid_width, grid_height):
|
|||||||
[weak_null_border] * grid_width for _ in range(grid_height + 1)]
|
[weak_null_border] * grid_width for _ in range(grid_height + 1)]
|
||||||
|
|
||||||
def set_one_border(border_grid, box_style, side, grid_x, grid_y):
|
def set_one_border(border_grid, box_style, side, grid_x, grid_y):
|
||||||
from ..draw import get_color
|
from ..draw.color import get_color
|
||||||
|
|
||||||
style = box_style[f'border_{side}_style']
|
style = box_style[f'border_{side}_style']
|
||||||
width = box_style[f'border_{side}_width']
|
width = box_style[f'border_{side}_width']
|
||||||
|
@ -21,7 +21,7 @@ class TextBox:
|
|||||||
def text(svg, node, font_size):
|
def text(svg, node, font_size):
|
||||||
"""Draw text node."""
|
"""Draw text node."""
|
||||||
from ..css.properties import INITIAL_VALUES
|
from ..css.properties import INITIAL_VALUES
|
||||||
from ..draw import draw_emojis, draw_first_line
|
from ..draw.text import draw_emojis, draw_first_line
|
||||||
from ..text.line_break import split_first_line
|
from ..text.line_break import split_first_line
|
||||||
|
|
||||||
# TODO: use real computed values
|
# TODO: use real computed values
|
||||||
|
Loading…
Reference in New Issue
Block a user