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109 lines
4.2 KiB
109 lines
4.2 KiB
#!/usr/bin/env python3 |
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# -*- coding: utf-8 -*- |
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# Copyright (C) 2018 Andy Stewart |
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# |
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# Author: Andy Stewart <lazycat.manatee@gmail.com> |
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# Maintainer: Andy Stewart <lazycat.manatee@gmail.com> |
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# |
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# This program is free software: you can redistribute it and/or modify |
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# it under the terms of the GNU General Public License as published by |
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# the Free Software Foundation, either version 3 of the License, or |
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# any later version. |
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# |
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# This program is distributed in the hope that it will be useful, |
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# but WITHOUT ANY WARRANTY; without even the implied warranty of |
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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# GNU General Public License for more details. |
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# |
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# You should have received a copy of the GNU General Public License |
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# along with this program. If not, see <http://www.gnu.org/licenses/>. |
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from PyQt5 import QtCore |
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from PyQt5.QtCore import Qt, QEvent |
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from PyQt5.QtGui import QPainter |
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from PyQt5.QtWidgets import QWidget, QVBoxLayout, QGraphicsView |
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from core.xutils import get_xlib_display |
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class View(QWidget): |
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trigger_focus_event = QtCore.pyqtSignal(str) |
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def __init__(self, buffer, view_info): |
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super(View, self).__init__() |
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self.buffer = buffer |
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# Init widget attributes. |
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self.setWindowFlags(Qt.FramelessWindowHint) |
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self.setAttribute(Qt.WA_X11DoNotAcceptFocus, True) |
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self.setContentsMargins(0, 0, 0, 0) |
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self.installEventFilter(self) |
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# Init attributes. |
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self.view_info = view_info |
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(self.buffer_id, self.emacs_xid, self.x, self.y, self.width, self.height) = view_info.split(":") |
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self.emacs_xid = int(self.emacs_xid) |
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self.x = int(self.x) |
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self.y = int(self.y) |
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self.width = int(self.width) |
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self.height = int(self.height) |
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# Build QGraphicsView. |
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self.layout = QVBoxLayout(self) |
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self.layout.setContentsMargins(0, 0, 0, 0) |
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self.graphics_view = QGraphicsView(buffer, self) |
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self.graphics_view.setHorizontalScrollBarPolicy(Qt.ScrollBarAlwaysOff) |
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self.graphics_view.setVerticalScrollBarPolicy(Qt.ScrollBarAlwaysOff) |
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self.graphics_view.setRenderHints(QPainter.Antialiasing | QPainter.SmoothPixmapTransform | QPainter.TextAntialiasing) |
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# Remove damn border from QGraphicsView. |
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self.graphics_view.setFrameStyle(0) |
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self.graphics_view.setStyleSheet("QGraphicsView {background: transparent; border: 3px; outline: none;}") |
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self.layout.addWidget(self.graphics_view) |
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# NOTE: show function must start before resize to trigger *first* resizeEvent after show. |
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self.show() |
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# Resize after show to trigger fit view operation. |
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self.resize(self.width, self.height) |
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def resizeEvent(self, event): |
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# Fit content to view rect just when buffer fit_to_view option is enable. |
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if self.buffer.fit_to_view: |
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if event.oldSize().isValid(): |
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self.graphics_view.fitInView(self.graphics_view.scene().sceneRect(), Qt.KeepAspectRatio) |
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QWidget.resizeEvent(self, event) |
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def eventFilter(self, obj, event): |
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# Focus emacs buffer when user click view. |
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if event.type() in [QEvent.MouseButtonPress, QEvent.MouseButtonRelease, |
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QEvent.MouseMove, QEvent.MouseButtonDblClick, QEvent.Wheel]: |
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# Send mouse event to applicatin view. |
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self.trigger_focus_event.emit("{0},{1}".format(event.globalX(), event.globalY())) |
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# Stop mouse event. |
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return True |
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return False |
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def showEvent(self, event): |
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# NOTE: we must reparent after widget show, otherwise reparent operation maybe failed. |
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self.reparent() |
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# Make graphics view at left-top corner after show. |
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self.graphics_view.verticalScrollBar().setValue(0) |
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self.graphics_view.horizontalScrollBar().setValue(0) |
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def reparent(self): |
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xlib_display = get_xlib_display() |
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view_xid = self.winId().__int__() |
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view_xwindow = xlib_display.create_resource_object("window", view_xid) |
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emacs_xwindow = xlib_display.create_resource_object("window", self.emacs_xid) |
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view_xwindow.reparent(emacs_xwindow, self.x, self.y) |
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xlib_display.sync() |
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def handle_destroy(self): |
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self.destroy()
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