120 lines
4.2 KiB
Python
120 lines
4.2 KiB
Python
#!/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.QtCore import Qt, QSizeF
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from PyQt5.QtGui import QBrush
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from PyQt5.QtGui import QColor
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from PyQt5.QtMultimedia import QCameraInfo, QCamera, QCameraImageCapture
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from PyQt5.QtMultimediaWidgets import QGraphicsVideoItem
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from PyQt5.QtWidgets import QGraphicsScene, QGraphicsView, QFrame
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from PyQt5.QtWidgets import QWidget, QVBoxLayout
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from core.buffer import Buffer
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from core.utils import message_to_emacs, get_emacs_var
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from pathlib import Path
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import time
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import os
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class AppBuffer(Buffer):
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def __init__(self, buffer_id, url, arguments):
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Buffer.__init__(self, buffer_id, url, arguments, True)
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self.camera_save_path = get_emacs_var("eaf-camera-save-path")
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self.add_widget(CameraWidget(QColor(self.theme_background_color)))
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def all_views_hide(self):
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# Need stop camera if all view will hide, otherwise camera will crash.
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self.buffer_widget.camera.stop()
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def some_view_show(self):
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# Re-start camero after some view show.
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self.buffer_widget.camera.start()
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def take_photo(self):
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if os.path.exists(os.path.expanduser(self.camera_save_path)):
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location = self.camera_save_path
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else:
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location = "~/Downloads"
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result = self.buffer_widget.take_photo(location)
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if result:
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message_to_emacs("Captured Photo at " + location)
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def destroy_buffer(self):
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self.buffer_widget.stop_camera()
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super().destroy_buffer()
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class CameraWidget(QWidget):
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def __init__(self, background_color):
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QWidget.__init__(self)
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self.scene = QGraphicsScene(self)
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self.scene.setBackgroundBrush(QBrush(background_color))
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self.graphics_view = QGraphicsView(self.scene)
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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.setFrameStyle(QFrame.NoFrame)
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self.graphics_view.scale(-1, 1) # this make live video from camero mirror.
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self.video_item = QGraphicsVideoItem()
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self.scene.addItem(self.video_item)
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self.layout = QVBoxLayout(self)
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self.layout.setSpacing(0)
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self.layout.setContentsMargins(0, 0, 0, 0)
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self.layout.addWidget(self.graphics_view)
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self.available_cameras = QCameraInfo.availableCameras()
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# Set the default camera.
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self.select_camera(0)
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def resizeEvent(self, event):
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self.video_item.setSize(QSizeF(event.size().width(), event.size().height()))
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QWidget.resizeEvent(self, event)
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def select_camera(self, i):
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self.camera = QCamera(self.available_cameras[i])
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self.camera.setViewfinder(self.video_item)
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self.camera.setCaptureMode(QCamera.CaptureStillImage)
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self.camera.start()
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def take_photo(self, camera_save_path):
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image_capture = QCameraImageCapture(self.camera)
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save_path = str(Path(os.path.expanduser(camera_save_path)))
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photo_path = os.path.join(save_path, "EAF_Camera_Photo_" + time.strftime("%Y%m%d_%H%M%S", time.localtime(int(time.time()))))
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return image_capture.capture(photo_path)
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def stop_camera(self):
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self.camera.stop()
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if __name__ == "__main__":
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from PyQt5.QtWidgets import QApplication
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import sys
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import signal
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app = QApplication(sys.argv)
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test = CameraWidget(QColor(0, 0, 0, 255))
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test.show()
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signal.signal(signal.SIGINT, signal.SIG_DFL)
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sys.exit(app.exec_())
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