def create_icon(text, palette=None, sz=None, divider=2, fill='white'): if isinstance(fill, string_or_bytes): fill = QColor(fill) sz = sz or int( math.ceil(tprefs['toolbar_icon_size'] * QApplication.instance().devicePixelRatio())) if palette is None: palette = QApplication.palette() img = QImage(sz, sz, QImage.Format.Format_ARGB32) img.fill(Qt.GlobalColor.transparent) p = QPainter(img) p.setRenderHints(QPainter.RenderHint.TextAntialiasing | QPainter.RenderHint.Antialiasing) if fill is not None: qDrawShadeRect(p, img.rect(), palette, fill=fill, lineWidth=1, midLineWidth=1) f = p.font() f.setFamily('Liberation Sans'), f.setPixelSize(int( sz // divider)), f.setBold(True) p.setFont(f), p.setPen(QColor('#2271d5')) p.drawText(img.rect().adjusted(2, 2, -2, -2), Qt.AlignmentFlag.AlignCenter, text) p.end() return QIcon(QPixmap.fromImage(img))
def refresh(self, row, mi=None): if isinstance(row, QModelIndex): row = row.row() if row == self.current_row and mi is None: return mi = self.view.model().get_book_display_info(row) if mi is None else mi if mi is None: # Indicates books was deleted from library, or row numbers have # changed return self.previous_button.setEnabled(False if row == 0 else True) self.next_button.setEnabled(False if row == self.view.model().rowCount(QModelIndex()) - 1 else True) self.current_row = row self.setWindowTitle(mi.title) self.cover_pixmap = QPixmap.fromImage(mi.cover_data[1]) self.path_to_book = getattr(mi, 'path', None) try: dpr = self.devicePixelRatioF() except AttributeError: dpr = self.devicePixelRatio() self.cover_pixmap.setDevicePixelRatio(dpr) self.marked = mi.marked self.resize_cover() html = render_html(mi, True, self, pref_name='popup_book_display_fields') set_html(mi, html, self.details) self.update_cover_tooltip()
def drag_icon(self, cover, multiple): cover = cover.scaledToHeight(120, Qt.TransformationMode.SmoothTransformation) if multiple: base_width = cover.width() base_height = cover.height() base = QImage(base_width + 21, base_height + 21, QImage.Format.Format_ARGB32_Premultiplied) base.fill(QColor(255, 255, 255, 0).rgba()) p = QPainter(base) rect = QRect(20, 0, base_width, base_height) p.fillRect(rect, QColor('white')) p.drawRect(rect) rect.moveLeft(10) rect.moveTop(10) p.fillRect(rect, QColor('white')) p.drawRect(rect) rect.moveLeft(0) rect.moveTop(20) p.fillRect(rect, QColor('white')) p.save() p.setCompositionMode( QPainter.CompositionMode.CompositionMode_SourceAtop) p.drawImage(rect.topLeft(), cover) p.restore() p.drawRect(rect) p.end() cover = base return QPixmap.fromImage(cover)
def test(scale=0.25): from qt.core import QLabel, QPixmap, QMainWindow, QWidget, QScrollArea, QGridLayout from calibre.gui2 import Application app = Application([]) mi = Metadata('Unknown', ['Kovid Goyal', 'John & Doe', 'Author']) mi.series = 'A series & styles' m = QMainWindow() sa = QScrollArea(m) w = QWidget(m) sa.setWidget(w) l = QGridLayout(w) w.setLayout(l), l.setSpacing(30) scale *= w.devicePixelRatioF() labels = [] for r, color in enumerate(sorted(default_color_themes)): for c, style in enumerate(sorted(all_styles())): mi.series_index = c + 1 mi.title = 'An algorithmic cover [%s]' % color prefs = override_prefs(cprefs, override_color_theme=color, override_style=style) scale_cover(prefs, scale) img = generate_cover(mi, prefs=prefs, as_qimage=True) img.setDevicePixelRatio(w.devicePixelRatioF()) la = QLabel() la.setPixmap(QPixmap.fromImage(img)) l.addWidget(la, r, c) labels.append(la) m.setCentralWidget(sa) w.resize(w.sizeHint()) m.show() app.exec()
def __init__(self, parent=None): QStackedWidget.__init__(self, parent) self.welcome = w = QLabel('<p>'+_( 'Double click a file in the left panel to start editing' ' it.')) self.addWidget(w) w.setWordWrap(True) w.setAlignment(Qt.AlignmentFlag.AlignTop | Qt.AlignmentFlag.AlignHCenter) self.container = c = QWidget(self) self.addWidget(c) l = c.l = QVBoxLayout(c) c.setLayout(l) l.setContentsMargins(0, 0, 0, 0) self.editor_tabs = t = QTabWidget(c) l.addWidget(t) t.setDocumentMode(True) t.setTabsClosable(True) t.setMovable(True) pal = self.palette() if pal.color(QPalette.ColorRole.WindowText).lightness() > 128: i = QImage(I('modified.png')) i.invertPixels() self.modified_icon = QIcon(QPixmap.fromImage(i)) else: self.modified_icon = QIcon(I('modified.png')) self.editor_tabs.currentChanged.connect(self.current_editor_changed) self.editor_tabs.tabCloseRequested.connect(self._close_requested) self.search_panel = SearchPanel(self) l.addWidget(self.search_panel) self.restore_state() self.editor_tabs.tabBar().installEventFilter(self)
def entry_to_item(entry, parent): icon = get_icon(entry.get('icon_file'), as_data=False) if icon is None: icon = entry_to_icon_text(entry)[0] else: icon = QPixmap.fromImage(icon) ans = QListWidgetItem(QIcon(icon), entry.get('name') or _('Unknown'), parent) ans.setData(ENTRY_ROLE, entry) ans.setToolTip(_('Application path:') + '\n' + entry['path'])
def trim_cover(self): book_id = self.data.get('id') if not book_id: return from calibre.utils.img import image_from_x, remove_borders_from_image img = image_from_x(self.pixmap) nimg = remove_borders_from_image(img) if nimg is not img: self.last_trim_id = book_id self.last_trim_pixmap = self.pixmap self.update_cover(QPixmap.fromImage(nimg))
def __getitem__(self, key): ' Must be called in the GUI thread ' with self.lock: self.clear_staging() ans = self.items.pop(key, False) # pop() so that item is moved to the top if ans is not False: if isinstance(ans, QImage): # Convert to QPixmap, since rendering QPixmap is much # faster ans = QPixmap.fromImage(ans) self.items[key] = ans return ans
def update_preview(self): if self.ignore_changed: return dpr = getattr(self, 'devicePixelRatioF', self.devicePixelRatio)() w, h = int(dpr * self.preview_label.sizeHint().width()), int(dpr * self.preview_label.sizeHint().height()) prefs = self.prefs_for_rendering hr = h / prefs['cover_height'] for x in ('title', 'subtitle', 'footer'): attr = '%s_font_size' % x prefs[attr] = int(prefs[attr] * hr) prefs['cover_width'], prefs['cover_height'] = w, h img = generate_cover(self.mi, prefs=prefs, as_qimage=True) img.setDevicePixelRatio(dpr) self.preview_label.setPixmap(QPixmap.fromImage(img))
def show_data(self, data): self.animation.stop() same_item = getattr(data, 'id', True) == self.data.get('id', False) self.data = {'id':data.get('id', None)} if data.cover_data[1]: self.pixmap = QPixmap.fromImage(data.cover_data[1]) if self.pixmap.isNull() or self.pixmap.width() < 5 or \ self.pixmap.height() < 5: self.pixmap = self.default_pixmap else: self.pixmap = self.default_pixmap self.do_layout() self.update() if (not same_item and not config['disable_animations'] and self.isVisible()): self.animation.start()
def render_svg(widget, path): img = QPixmap() rend = QSvgRenderer() if rend.load(path): dpr = getattr(widget, 'devicePixelRatioF', widget.devicePixelRatio)() sz = rend.defaultSize() h = (max_available_height() - 50) w = int(h * sz.height() / float(sz.width())) pd = QImage(w * dpr, h * dpr, QImage.Format.Format_RGB32) pd.fill(Qt.GlobalColor.white) p = QPainter(pd) rend.render(p) p.end() img = QPixmap.fromImage(pd) img.setDevicePixelRatio(dpr) return img
def update_cover(self, pmap=None, cdata=None): if pmap is None: pmap = QPixmap() pmap.loadFromData(cdata) if pmap.isNull(): return if pmap.hasAlphaChannel(): pmap = QPixmap.fromImage(blend_image(image_from_x(pmap))) self.pixmap = pmap self.do_layout() self.update() self.update_tooltip(getattr(self.parent(), 'current_path', '')) if not config['disable_animations']: self.animation.start() id_ = self.data.get('id', None) if id_ is not None: self.cover_changed.emit(id_, cdata or pixmap_to_data(pmap))
def load_pixmap(self): canvas_size = self.rect().width(), self.rect().height() if self.last_canvas_size != canvas_size: if self.last_canvas_size is not None and self.selection_state.rect is not None: self.selection_state.reset() # TODO: Migrate the selection rect self.last_canvas_size = canvas_size self.current_scaled_pixmap = None if self.current_scaled_pixmap is None: pwidth, pheight = self.last_canvas_size i = self.current_image width, height = i.width(), i.height() scaled, width, height = fit_image(width, height, pwidth, pheight) try: dpr = self.devicePixelRatioF() except AttributeError: dpr = self.devicePixelRatio() if scaled: i = self.current_image.scaled(int(dpr * width), int(dpr * height), transformMode=Qt.TransformationMode.SmoothTransformation) self.current_scaled_pixmap = QPixmap.fromImage(i) self.current_scaled_pixmap.setDevicePixelRatio(dpr)
def start_show_animation(self): if self.rendered_pixmap is not None: return dpr = getattr(self, 'devicePixelRatioF', self.devicePixelRatio)() p = QImage(dpr * self.size(), QImage.Format.Format_ARGB32_Premultiplied) p.setDevicePixelRatio(dpr) # For some reason, Qt scrolls the book view when rendering this widget, # for the very first time, so manually preserve its position pr = getattr(self.parent(), 'library_view', None) if not hasattr(pr, 'preserve_state'): self.render(p) else: with pr.preserve_state(): self.render(p) self.rendered_pixmap = QPixmap.fromImage(p) self.original_visibility = v = [] for child in self.findChildren(QWidget): if child.isVisible(): child.setVisible(False) v.append(child) self.show_animation.start()
def failed_img(self): if self._failed_img is None: try: dpr = self.devicePixelRatioF() except AttributeError: dpr = self.devicePixelRatio() i = QImage(200, 150, QImage.Format.Format_ARGB32) i.setDevicePixelRatio(dpr) i.fill(Qt.GlobalColor.white) p = QPainter(i) r = i.rect().adjusted(10, 10, -10, -10) n = QPen(Qt.PenStyle.DashLine) n.setColor(Qt.GlobalColor.black) p.setPen(n) p.drawRect(r) p.setPen(Qt.GlobalColor.black) f = self.font() f.setPixelSize(20) p.setFont(f) p.drawText(r.adjusted(10, 0, -10, 0), Qt.AlignmentFlag.AlignCenter | Qt.TextFlag.TextWordWrap, _('Image could not be rendered')) p.end() self._failed_img = QPixmap.fromImage(i) return self._failed_img
def decoration_for_style(palette, style, icon_size, device_pixel_ratio, is_dark): style_key = (is_dark, icon_size, device_pixel_ratio, tuple((k, style[k]) for k in sorted(style))) sentinel = object() ans = decoration_cache.get(style_key, sentinel) if ans is not sentinel: return ans ans = None kind = style.get('kind') if kind == 'color': key = 'dark' if is_dark else 'light' val = style.get(key) if val is None: which = style.get('which') val = (builtin_colors_dark if is_dark else builtin_colors_light).get(which) if val is None: val = style.get('background-color') if val is not None: ans = QColor(val) elif kind == 'decoration': which = style.get('which') if which is not None: q = builtin_decorations.get(which) if q is not None: style = q sz = int(math.ceil(icon_size * device_pixel_ratio)) canvas = QImage(sz, sz, QImage.Format.Format_ARGB32) canvas.fill(Qt.GlobalColor.transparent) canvas.setDevicePixelRatio(device_pixel_ratio) p = QPainter(canvas) p.setRenderHint(QPainter.RenderHint.Antialiasing, True) p.setPen(palette.color(QPalette.ColorRole.WindowText)) irect = QRect(0, 0, icon_size, icon_size) adjust = -2 text_rect = p.drawText(irect.adjusted(0, adjust, 0, adjust), Qt.AlignmentFlag.AlignHCenter| Qt.AlignmentFlag.AlignTop, 'a') p.drawRect(irect) fm = p.fontMetrics() pen = p.pen() if 'text-decoration-color' in style: pen.setColor(QColor(style['text-decoration-color'])) lstyle = style.get('text-decoration-style') or 'solid' q = {'dotted': Qt.PenStyle.DotLine, 'dashed': Qt.PenStyle.DashLine, }.get(lstyle) if q is not None: pen.setStyle(q) lw = fm.lineWidth() if lstyle == 'double': lw * 2 pen.setWidth(fm.lineWidth()) q = style.get('text-decoration-line') or 'underline' pos = text_rect.bottom() height = irect.bottom() - pos if q == 'overline': pos = height elif q == 'line-through': pos = text_rect.center().y() - adjust - lw // 2 p.setPen(pen) if lstyle == 'wavy': p.drawPath(wavy_path(icon_size, height, pos)) else: p.drawLine(0, pos, irect.right(), pos) p.end() ans = QPixmap.fromImage(canvas) elif 'background-color' in style: ans = QColor(style['background-color']) decoration_cache[style_key] = ans return ans