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raspi_remote_display.py
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raspi_remote_display.py
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# -*- coding: utf-8 -*-
import os
import sys
from PySide.QtGui import *
from PySide.QtCore import *
from framework.gui.msgbox import *
from framework.core.uimailbox import *
from framework.gui.widget import ImageWidget
import resources_rc
from settings import RaspiModeManager
from raspi_io.utility import scan_server
from raspi_io import TVService, MmalGraph, RaspiSocketError
class RaspiRemoteDisplay(QWidget):
Version = "0.1"
ScanTimeout = 0.05
DefaultResolution = "1920x1080"
AcceptFormats = ("bmp", "jpg", "png", "jpeg")
def __init__(self):
super(RaspiRemoteDisplay, self).__init__()
self.tv = None
self.graph = None
self.modes = RaspiModeManager()
self.__initUi()
self.__initData()
self.__initSignalAndSlots()
def __initUi(self):
self.ui_mail = UiMailBox(self)
self.ui_reduce_size = QCheckBox()
self.ui_device_list = QComboBox()
self.ui_timing_list = QComboBox()
self.ui_image_preview = ImageWidget(640, 480)
self.ui_image_preview.drawFromText(self.tr("请先连接树莓派"))
self.ui_reset_select = QPushButton(self.tr("重新选择"))
self.ui_reset_timing = QPushButton(self.tr("重置分辨率"))
for element in (self.ui_timing_list, self.ui_reset_timing, self.ui_reduce_size):
element.setDisabled(True)
tools_layout = QHBoxLayout()
tools_layout.addWidget(QLabel(self.tr("树莓派列表：")))
tools_layout.addWidget(self.ui_device_list)
tools_layout.addWidget(self.ui_reset_select)
tools_layout.addWidget(QSplitter())
tools_layout.addWidget(QLabel(self.tr("显示器分辨率：")))
tools_layout.addWidget(self.ui_timing_list)
tools_layout.addWidget(self.ui_reset_timing)
tools_layout.addWidget(QSplitter())
tools_layout.addWidget(QLabel(self.tr("BMP 转为 PNG")))
tools_layout.addWidget(self.ui_reduce_size)
layout = QVBoxLayout()
layout.addLayout(tools_layout)
layout.addWidget(self.ui_image_preview)
self.setLayout(layout)
self.setWindowTitle(self.tr("树莓派远程显示工具 v{}".format(self.Version)))
self.setWindowIcon(QIcon(QPixmap(":/icon/resources/icon.ico")))
self.setFixedSize(self.sizeHint())
def __initData(self):
self.ui_device_list.addItem(self.tr("请选择树莓派"))
self.ui_device_list.addItems(scan_server(self.ScanTimeout))
for res, mode in self.modes.get_modes().items():
self.ui_timing_list.addItem(res, mode)
self.ui_timing_list.setCurrentIndex(self.modes.get_index_from_resolution(self.DefaultResolution))
def __initSignalAndSlots(self):
self.ui_reset_select.clicked.connect(self.__slotResetDevice)
self.ui_reset_timing.clicked.connect(self.__slotResetTiming)
self.ui_device_list.currentIndexChanged.connect(self.__slotSelectDevice)
self.ui_timing_list.currentIndexChanged.connect(self.__slotSelectTiming)
def __slotResetDevice(self):
self.setAcceptDrops(False)
self.ui_device_list.clear()
self.ui_device_list.addItem(self.tr("请选择树莓派"))
self.ui_image_preview.drawFromText(self.tr("请先连接树莓派"))
self.ui_device_list.addItems(scan_server(self.ScanTimeout))
self.ui_device_list.setEnabled(True)
for element in (self.ui_timing_list, self.ui_reset_timing, self.ui_reduce_size):
element.setDisabled(True)
del self.tv
self.tv = None
del self.graph
self.graph = None
def __slotResetTiming(self):
self.ui_timing_list.setEnabled(True)
self.ui_reset_timing.setDisabled(True)
def __slotSelectDevice(self, index):
try:
if index <= 0:
return
# Get raspberry pi address and resolution
address = self.ui_device_list.itemText(index)
mode = self.ui_timing_list.itemData(self.ui_timing_list.currentIndex())
# Create TVService and MmalGraph object and accept drop
self.tv = TVService(address)
self.graph = MmalGraph(address)
self.tv.set_explicit(TVService.DMT, mode)
self.setAcceptDrops(True)
self.ui_image_preview.drawFromText(
self.tr("拖动图片到此显示\n（{}）".format("、".join(self.AcceptFormats).upper()))
)
self.ui_device_list.setDisabled(True)
self.ui_reset_select.setEnabled(True)
self.ui_reset_timing.setEnabled(True)
self.ui_reduce_size.setEnabled(True)
except RaspiSocketError as err:
self.ui_mail.send(MessageBoxMail(MB_TYPE_ERR, "连接错误", "{}".format(err)))
def __slotSelectTiming(self, item):
try:
if item <= 0:
return
if not isinstance(self.tv, TVService) or not isinstance(self.graph, MmalGraph):
raise RuntimeError("请先连接树莓派")
# Change raspberry pi mode and re-open image
self.tv.set_explicit(TVService.DMT, self.ui_timing_list.itemData(item))
self.graph.open(self.graph.uri)
self.ui_timing_list.setDisabled(True)
self.ui_reset_timing.setEnabled(True)
except RuntimeError as err:
self.ui_mail.send(MessageBoxMail(MB_TYPE_ERR, "运行错误", "{}".format(err)))
except RaspiSocketError as err:
self.ui_mail.send(MessageBoxMail(MB_TYPE_ERR, "连接错误", "{}".format(err)))
def dragEnterEvent(self, ev):
for url in ev.mimeData().urls():
path = url.toLocalFile()
fmt = os.path.splitext(path)[-1][1:].lower()
if fmt in self.AcceptFormats:
# Accept drag, preview image
ev.acceptProposedAction()
self.ui_image_preview.drawFromFs(path)
def dropEvent(self, ev):
for url in ev.mimeData().urls():
path = url.toLocalFile()
reduce_size = self.ui_reduce_size.isChecked()
if isinstance(self.graph, MmalGraph):
# Background display
self.ui_mail.send(CallbackFuncMail(self.graph.open, args=(path.encode("gbk"), reduce_size)))
if __name__ == "__main__":
app = QApplication(sys.argv)
QTextCodec.setCodecForTr(QTextCodec.codecForName("UTF-8"))
widget = RaspiRemoteDisplay()
widget.show()
sys.exit(app.exec_())