trav
fbb439b7ee
The sidebar's art square, when a track has no art, is now the list's own background with a rounded panel set into it, debossed like the visualizer and the now-playing panel. paint_deboss takes its rims in pixels when asked, so a panel as tall as the sidebar is recessed as much as a short one rather than fading over 16 px.
144 lines
5.2 KiB
Python
144 lines
5.2 KiB
Python
"""Round 80: scrollbars lose their arrow buttons, and the thumb is a button.
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- No arrows: the trough runs the bar's full length and the arrow rects are
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empty, so nothing paints or hit-tests there.
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- The thumb gets the buttons' corner radius and emboss, with rims as tall in
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pixels as a button's, however long the thumb.
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- The bar's thickness comes from the UI scale through the style, not QSS
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(any QSS rule on a scrollbar part makes Qt draw the arrows itself).
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"""
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from PyQt6.QtCore import Qt
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from PyQt6.QtGui import QColor
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from PyQt6.QtWidgets import QPushButton, QScrollBar, QStyle, QStyleOptionSlider
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from lintunes import theme
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from lintunes.gui.track_table import ClickToJumpScrollStyle
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SC = QStyle.SubControl
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def _option(bar):
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opt = QStyleOptionSlider()
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bar.initStyleOption(opt)
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return opt
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def _bar(qapp, orientation=Qt.Orientation.Vertical):
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bar = QScrollBar(orientation)
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bar.setStyle(ClickToJumpScrollStyle())
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bar.setRange(0, 900)
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bar.setPageStep(100)
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bar.resize(14, 400) if orientation == Qt.Orientation.Vertical \
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else bar.resize(400, 14)
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return bar
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def test_no_arrow_buttons(qapp):
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bar = _bar(qapp)
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style, opt = bar.style(), _option(bar)
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cc = QStyle.ComplexControl.CC_ScrollBar
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assert style.subControlRect(cc, opt, SC.SC_ScrollBarAddLine, bar).isEmpty()
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assert style.subControlRect(cc, opt, SC.SC_ScrollBarSubLine, bar).isEmpty()
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assert style.subControlRect(cc, opt, SC.SC_ScrollBarGroove, bar) == opt.rect
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def test_thumb_spans_the_full_trough(qapp):
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for orientation in (Qt.Orientation.Vertical, Qt.Orientation.Horizontal):
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bar = _bar(qapp, orientation)
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style, cc = bar.style(), QStyle.ComplexControl.CC_ScrollBar
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bar.setValue(0)
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top = style.subControlRect(cc, _option(bar), SC.SC_ScrollBarSlider, bar)
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bar.setValue(900)
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end = style.subControlRect(cc, _option(bar), SC.SC_ScrollBarSlider, bar)
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if orientation == Qt.Orientation.Vertical:
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assert top.top() == 0 and end.bottom() == 399
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assert top.height() == 40 # 100 / (900 + 100) of 400
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else:
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assert top.left() == 0 and end.right() == 399
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def test_tiny_page_keeps_a_grabbable_thumb(qapp):
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bar = _bar(qapp)
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bar.setRange(0, 100000)
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rect = bar.style().subControlRect(QStyle.ComplexControl.CC_ScrollBar,
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_option(bar), SC.SC_ScrollBarSlider, bar)
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assert rect.height() == ClickToJumpScrollStyle.extent * 2
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def test_thickness_follows_ui_scale(qapp):
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class Prefs(dict):
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def get(self, key, default=None):
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return "large" if key == "ui_scale" else default
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before = ClickToJumpScrollStyle.extent
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try:
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theme.apply_theme(qapp, Prefs())
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assert ClickToJumpScrollStyle.extent == theme.UI_SCALES["large"]["scrollbar"]
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assert "QScrollBar" not in qapp.styleSheet()
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finally:
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ClickToJumpScrollStyle.extent = before
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def test_thumb_rims_match_a_real_button(qapp):
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qapp.setStyleSheet(theme.button_emboss_qss(QColor("#d0d0d0")))
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try:
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button = QPushButton("OK")
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height = button.sizeHint().height()
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assert abs(theme.button_rim_px(button.fontMetrics())
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- theme.EMBOSS_RIM_WIDTH * height) < 1
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finally:
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qapp.setStyleSheet("")
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def test_thumb_paints(qapp):
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bar = _bar(qapp)
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bar.setValue(450)
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image = bar.grab().toImage()
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thumb = bar.style().subControlRect(QStyle.ComplexControl.CC_ScrollBar,
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_option(bar), SC.SC_ScrollBarSlider, bar)
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trough = image.pixelColor(7, 5)
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middle = image.pixelColor(7, thumb.center().y())
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assert middle != trough
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# --------------------------------------------------------------------------
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# no album art: a debossed panel, not a flat square
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# --------------------------------------------------------------------------
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def test_no_art_is_a_debossed_panel(qapp):
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from PyQt6.QtCore import QObject, pyqtSignal
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from lintunes.gui.sidebar import NO_ART_MARGIN, SidebarArt
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class Player(QObject):
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track_changed = pyqtSignal(object)
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art = SidebarArt(Player())
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art.resize(200, 200)
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image = art.grab().toImage()
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base = art.palette().base().color()
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# the margin around the panel is the list's own background...
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assert image.pixelColor(1, 100) == base
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# ...the corner is rounded off, so it's background too...
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assert image.pixelColor(NO_ART_MARGIN + 1, NO_ART_MARGIN + 1) == base
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# ...and the panel is shaded darker at the top than in the middle
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top = image.pixelColor(100, NO_ART_MARGIN + 2).lightness()
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middle = image.pixelColor(100, 100).lightness()
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assert top < middle
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def test_deboss_rims_can_be_fixed_in_pixels(qapp):
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"""On a 400 px panel the default rims are 32 px deep; 3 px rims leave
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row 10 already on the face, a good deal lighter."""
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from PyQt6.QtCore import QRectF
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from PyQt6.QtGui import QImage, QPainter
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color = QColor("#e0e0e0")
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def row10(**kw):
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image = QImage(100, 400, QImage.Format.Format_ARGB32)
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image.fill(0)
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painter = QPainter(image)
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theme.paint_deboss(painter, QRectF(0.5, 0.5, 99, 399), color, 8, **kw)
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painter.end()
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return image.pixelColor(50, 10).lightness()
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assert row10(rim=3) > row10() + 5
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