アニメ表示＆間隔の設定

　ドット絵アニメ表示する。

成果物

• github

コード

コード(600行)

main.py

#!/usr/bin/python3
# -*- coding: utf-8 -*-
import sys, os, numpy, PIL
from PySide2 import QtCore, QtGui, QtWidgets
from PIL import Image, ImagePalette

class Window(QtWidgets.QMainWindow):
    def __init__(self):
        super(self.__class__, self).__init__()
        self.setAcceptDrops(True)
        self.widget = Widget(self)
        self.setCentralWidget(self.widget)

        menu_file = QtWidgets.QMenu('File', self)
        menu_file.addAction(self.widget.GraphicsView.Scene.Drawable.SaveAction)
        self.menuBar().addMenu(menu_file)

        menu_frame = QtWidgets.QMenu('Animation', self)
        menu_frame.addAction(FrameListView.AddFrameAction)
        menu_frame.addAction(FrameListView.DeleteFrameAction)
        self.menuBar().addMenu(menu_frame)

        self.show()

        # Frame側でも使いたいので
        globals()['Window'] = self

    def mousePressEvent(self, event):
        super(self.__class__, self).mousePressEvent(event)
        self.widget.update()
    def mouseMoveEvent(self, event):
        super(self.__class__, self).mouseMoveEvent(event)
        self.widget.update()
    def dragEnterEvent(self, event):
        super(self.__class__, self).dragEnterEvent(event)
        self.widget.update()
    def dragMoveEvent(self, event):
        super(self.__class__, self).dragMoveEvent(event)
    def dropEvent(self, event):
        super(self.__class__, self).dropEvent(event)

class Widget(QtWidgets.QWidget):
    def __init__(self, parent):
        super(self.__class__, self).__init__(parent)
        self.setAcceptDrops(True)
        self.view = GraphicView()

        self.animation = AnimationWidget()
#        self.animation.setMinimumHeight(self.animation.height())
#        self.animation.setMaximumHeight(self.animation.height()*1.2)
        self.animation.setMinimumHeight(32)
        self.animation.setMaximumHeight(64)
        self.animation.resize(self.animation.width(), self.animation.height())
        globals()['AnimationWidget'] = self.animation

        scroller1 = QtWidgets.QScrollArea()
        scroller1.setWidget(self.view)

        layout = QtWidgets.QGridLayout()
        layout.addWidget(scroller1, 0, 0)
        layout.addWidget(self.animation, 1, 0)

        self.setLayout(layout)
        self.resize(self.view.width(), self.view.height())
        self.setWindowTitle("QAction")
        self.show()
    @property
    def GraphicsView(self): return self.view
    def mousePressEvent(self, event):
        super(self.__class__, self).mousePressEvent(event)
        self.view.scene().update()
        self.view.update()
    def mouseMoveEvent(self, event):
        super(self.__class__, self).mouseMoveEvent(event)
        self.view.scene().update()
        self.view.update()
    def dragEnterEvent(self, event):
        super(self.__class__, self).dragEnterEvent(event)
        self.view.dragEnterEvent(event)
        self.view.scene().update()
        self.view.update()
    def dragMoveEvent(self, event):
        super(self.__class__, self).dragMoveEvent(event)
    def dropEvent(self, event):
        super(self.__class__, self).dropEvent(event)

class GraphicView(QtWidgets.QGraphicsView):
    def __init__(self):
        QtWidgets.QGraphicsView.__init__(self)
        self.setAcceptDrops(True)
        self.setWindowTitle("QGraphicsScene draw Grid")
        self.__editorScene = EditorScene(self)
        self.setScene(self.__editorScene)
    def mousePressEvent(self, event):
        super(self.__class__, self).mousePressEvent(event)
        self.scene().update()
    def mouseMoveEvent(self, event):
        super(self.__class__, self).mouseMoveEvent(event)
        self.scene().update()
    @property
    def Scene(self): return self.__editorScene
    def dragEnterEvent(self, event):
        super(self.__class__, self).dragEnterEvent(event)
        self.scene().update()
    def dragEnterEvent(self, event):
        super(self.__class__, self).dragMoveEvent(event)
        self.scene().update()
    def dropEvent(self, event):
        super(self.__class__, self).dropEvent(event)
        self.scene().update()

class EditorScene(QtWidgets.QGraphicsScene):
    def __init__(self, *args, **kwargs):
        super(self.__class__, self).__init__(*args, **kwargs)
        self.size = 16
        self.scale = 32
        self.setSceneRect(0, 0, self.size*self.scale, self.size*self.scale)

        self.grid = GridItem()
        self.addItem(self.grid)

        self.background = BackgroundItem()
        self.addItem(self.background)

        self.drawable = DrawableItem()
        self.addItem(self.drawable)

        self.background.setZValue(0)
        self.drawable.setZValue(1)
        self.grid.setZValue(9999)

        # Frame側でも使いたいので
        globals()['Drawable'] = self.drawable

    def mousePressEvent(self, event):
        for item in self.items():
            item.mousePressEvent(event)
        super(self.__class__, self).mousePressEvent(event)
    def mouseMoveEvent(self, event):
        for item in self.items():
            item.setAcceptHoverEvents(True)
            item.mouseMoveEvent(event)
        super(self.__class__, self).mouseMoveEvent(event)
    def dragEnterEvent(self, event):
        for item in self.items():
            item.setAcceptDrops(True)
            if event is type(QtWidgets.QGraphicsSceneDragDropEvent):
                item.dragEnterEvent(event)
        if event is type(QtWidgets.QGraphicsSceneDragDropEvent):
            super(self.__class__, self).dragEnterEvent(event)
    def dragMoveEvent(self, event):
        for item in self.items():
            item.setAcceptDrops(True)
            if event is type(QtWidgets.QGraphicsSceneDragDropEvent):
                item.dragEnterEvent(event)
        if event is type(QtWidgets.QGraphicsSceneDragDropEvent):
            super(self.__class__, self).dragEnterEvent(event)
    def dropEvent(self, event):
        for item in self.items():
            item.setAcceptDrops(True)
            item.dropEvent(event)
        if event is type(QtWidgets.QGraphicsSceneDragDropEvent):
            super(self.__class__, self).dropEvent(event)
    @property
    def Grid(self): return self.grid
    @property
    def Background(self): return self.background
    @property
    def Drawable(self): return self.drawable

class DrawableItem(QtWidgets.QGraphicsRectItem):
    def __init__(self, *args, **kwargs):
        super(self.__class__, self).__init__(*args, **kwargs)
        self.setAcceptDrops(True)
        self.setAcceptHoverEvents(True)
        self.scale = 32
        self.pixels = Pixels()
        self.actions = {}
        self.__create_save_action()

    def __create_save_action(self):
        a = QtWidgets.QAction('Save')
        a.setObjectName('Save')
        a.setShortcut('Ctrl+S')
        a.triggered.connect(self.Pixels.save)
        self.actions['Save'] = a

    def paint(self, painter, option, widget):
        painter.fillRect(widget.rect(), QtGui.QBrush( QtGui.QColor(0,0,0,0), QtCore.Qt.SolidPattern))
        for y in range(self.pixels.Height):
            for x in range(self.pixels.Width):
                if 1 == self.pixels.Pixels[y][x]:
                    painter.fillRect(x*self.scale, y*self.scale, self.scale, self.scale, QtGui.QBrush( QtGui.QColor(255,0,0,128), QtCore.Qt.SolidPattern))
 
    def mouseMoveEvent(self, event):
        pos = event.scenePos()
        x = int(pos.x()//self.scale)
        y = int(pos.y()//self.scale)
        if event.buttons() & QtCore.Qt.LeftButton:
            self.pixels.Pixels[y][x] = 1
#            print(x, y, self.pixels.Pixels)
            for idx in FrameListView.selectedIndexes():
                FrameListModel.Frames[idx.row()].Pixels.Pixels[y][x] = 1
                FrameListModel.update_icon(idx)
#                print(idx.row(), 'Drawable', x, y, FrameListModel.Frames[idx.row()].Pixels.Pixels)
#                FrameListView.mouseMoveEvent(QtGui.QMouseEvent(QtCore.QEvent.MouseButtonPress, event.pos(), event.button(), event.buttons(), QtCore.Qt.NoModifier))
#                FrameListView.mouseMoveEvent(QtGui.QMouseEvent(QtCore.QEvent.MouseMove, event.pos(), event.button(), event.buttons(), QtCore.Qt.NoModifier))
#            FrameListView.mouseMoveEvent(QtGui.QMouseEvent(QtCore.QEvent.MouseMove, event.pos(), event.button(), event.buttons(), QtCore.Qt.NoModifier))
#            FrameListView.update_icon()
#            FrameListView.update()
#            FrameListView.repaint()
            # 再描画。意味不明だがListViewのマウスイベントを発行すればListViewが再描画されることを発見した。なぜかupdate()やrepaint()では一切再描画されない。
            # だがListViewの先頭項目が選択されてしまう。このせいでバグるため再描画させられない。
#            super(FrameListView.__class__, FrameListView).mousePressEvent(QtGui.QMouseEvent(QtCore.QEvent.MouseMove, event.pos(), event.button(), event.buttons(), QtCore.Qt.NoModifier))
#            FrameListView.mousePressEvent(QtGui.QMouseEvent(QtCore.QEvent.MouseMove, event.pos(), event.button(), event.buttons(), QtCore.Qt.NoModifier))
            """
            FrameListView.update()
            FrameListView.updateGeometry()
            FrameListView.repaint()
            Window.update()
            Window.repaint()
            """
            FrameListView.update()
            Window.update()
        if event.buttons() & QtCore.Qt.RightButton:
            self.pixels.Pixels[y][x] = 0
            for idx in FrameListView.selectedIndexes():
                FrameListModel.Frames[idx.row()].Pixels.Pixels[y][x] = 0
                FrameListModel.update_icon(idx)
                print(idx.row(), 'Drawable', x, y, FrameListModel.Frames[idx.row()].Pixels.Pixels)
#            super(FrameListView.__class__, FrameListView).mousePressEvent(QtGui.QMouseEvent(QtCore.QEvent.MouseMove, event.pos(), event.button(), event.buttons(), QtCore.Qt.NoModifier))
#            FrameListView.mousePressEvent(QtGui.QMouseEvent(QtCore.QEvent.MouseMove, event.pos(), event.button(), event.buttons(), QtCore.Qt.NoModifier))
            """
            FrameListView.update()
            FrameListView.updateGeometry()
            FrameListView.repaint()
            Window.update()
            Window.repaint()
            """

    def mousePressEvent(self, event):
        pos = event.scenePos()
        x = int(pos.x()//self.scale)
        y = int(pos.y()//self.scale)
        if event.buttons() & QtCore.Qt.LeftButton:
            self.pixels.Pixels[y][x] = 1
            for idx in FrameListView.selectedIndexes():
                FrameListModel.Frames[idx.row()].Pixels.Pixels[y][x] = 1
                FrameListModel.update_icon(idx)
                print(idx.row(), 'Drawable', x, y, FrameListModel.Frames[idx.row()].Pixels.Pixels)
#            super(FrameListView.__class__, FrameListView).mousePressEvent(QtGui.QMouseEvent(QtCore.QEvent.MouseMove, event.pos(), event.button(), event.buttons(), QtCore.Qt.NoModifier))
#            FrameListView.mousePressEvent(QtGui.QMouseEvent(QtCore.QEvent.MouseMove, event.pos(), event.button(), event.buttons(), QtCore.Qt.NoModifier))
            """
            FrameListView.update()
            FrameListView.updateGeometry()
            FrameListView.repaint()
            Window.update()
            Window.repaint()
            """

        if event.buttons() & QtCore.Qt.RightButton:
            self.pixels.Pixels[y][x] = 0
            for idx in FrameListView.selectedIndexes():
                FrameListModel.Frames[idx.row()].Pixels.Pixels[y][x] = 0
                FrameListModel.update_icon(idx)
                print(idx.row(), 'Drawable', x, y, FrameListModel.Frames[idx.row()].Pixels.Pixels)
#            super(FrameListView.__class__, FrameListView).mousePressEvent(QtGui.QMouseEvent(QtCore.QEvent.MouseMove, event.pos(), event.button(), event.buttons(), QtCore.Qt.NoModifier))
#            FrameListView.mousePressEvent(QtGui.QMouseEvent(QtCore.QEvent.MouseMove, event.pos(), event.button(), event.buttons(), QtCore.Qt.NoModifier))
            """
            FrameListView.update()
            FrameListView.updateGeometry()
            FrameListView.repaint()
            Window.update()
            Window.repaint()
            Window.widget.update()
            Window.widget.repaint()
            """

    def mouseReleaseEvent(self, event):
        pass
    def mouseDoubleClickEvent(self, event):
        pass
    @property
    def Pixels(self): return self.pixels
    @Pixels.setter
    def Pixels(self, value):
        #self.pixels = value
        for y in range(value.Height):
            for x in range(value.Width):
                self.pixels.Pixels[y][x] = value.Pixels[y][x]
    @property
    def SaveAction(self): return self.actions['Save']
    def dragEnterEvent(self, event):
        if event.mimeData().hasUrls():
            event.acceptProposedAction()
    def dropEvent(self, event):
        for url in event.mimeData().urls():
            file_name = url.toLocalFile()
            print("Dropped file: " + file_name)
            self.Pixels.load(file_name)

class BackgroundItem(QtWidgets.QGraphicsRectItem):
    def __init__(self, *args, **kwargs):
        super(self.__class__, self).__init__(*args, **kwargs)
        self.size = 16
        self.scale = 32
        self.colors = [QtGui.QColor(196,196,196,255), QtGui.QColor(232,232,232,255)]
    def paint(self, painter, option, widget):
        for i in range(self.size*self.size):
            x = (i % self.size)
            y = (i // self.size)
            color = QtGui.QColor(128,128,128,255) if 0 == (i % 2) and 0 == (x % 2) else QtGui.QColor(196,196,196,255)
            painter.fillRect(x * (self.scale),               y * (self.scale),               self.scale//2, self.scale//2, self.colors[0])
            painter.fillRect(x * (self.scale)+self.scale//2, y * (self.scale)+self.scale//2, self.scale//2, self.scale//2, self.colors[0])
            painter.fillRect(x * (self.scale)+self.scale//2, y * (self.scale),               self.scale//2, self.scale//2, self.colors[1])
            painter.fillRect(x * (self.scale),               y * (self.scale)+self.scale//2, self.scale//2, self.scale//2, self.colors[1])

class GridItem(QtWidgets.QGraphicsRectItem):
    def __init__(self, *args, **kwargs):
        super(self.__class__, self).__init__(*args, **kwargs)
        self.size = 16
        self.scale = 32
    def paint(self, painter, option, widget):
        painter.fillRect(widget.rect(), QtGui.QBrush(QtGui.QColor(0,0,0,0), QtCore.Qt.SolidPattern))
        lines = []
        for y in range(self.size+1):
            lines.append(QtCore.QLine(0, y*self.scale, self.size*self.scale, y*self.scale))
        for x in range(self.size+1):
            lines.append(QtCore.QLine(x*self.scale, 0, x*self.scale, self.size*self.scale))
        painter.drawLines(lines)

class Pixels:
    def __init__(self):
        self.width = 16
        self.height = 16
        self.pixels = numpy.zeros(self.width*self.height, dtype=int).reshape(self.height, self.width)
    @property
    def Pixels(self): return self.pixels
    @property
    def Width(self): return self.width
    @property
    def Height(self): return self.height
    def save(self):
        print(os.getcwd())
        self.save_txt()
        for ext in ('gif', 'png', 'webp'):
            self.save_raster(ext)
        for ext in ('gif', 'png', 'webp'):
            self.save_animation(ext)
    def load(self, file_path):
        ext = os.path.splitext(file_path)[1].lower()[1:]
        if '' == ext: raise Exception('拡張子が必要です。png,gif,webp,txt形式のいずれかに対応しています。')
        elif 'txt' == ext: self.load_txt(file_path)
        elif 'gif' == ext: self.load_gif(file_path)
        elif 'png' == ext: self.load_png(file_path)
        elif 'webp' == ext: self.load_webp(file_path)
        else: raise Exception('拡張子が未対応です。png,gif,webp,txt形式のいずれかに対応しています。')
    def save_txt(self):
        with open(os.path.join(os.getcwd(), 'pixels.txt'), 'w') as f:
            f.write('\n'.join([''.join(map(str, self.pixels[y].tolist())) for y in range(self.height)]))
    def load_txt(self, file_path):
        with open(file_path, 'r') as f:
            lines = f.read().split('\n')
            self.height = len(lines)
            self.width = len(lines[0])
            self.pixels = numpy.zeros(self.width*self.height, dtype=int).reshape(self.height, self.width)
            x = 0; y = 0;
            for line in lines:
                for c in line:
                    self.pixels[y][x] = int(c, 16)
                    x += 1
                y += 1
                x = 0

    def save_raster(self, ext):
        image = Image.new('1', (self.width, self.height))
        image.putdata(self.pixels.reshape(self.width * self.height).tolist())
        print(ext)
        image.save(os.path.join(os.getcwd(), 'pixels.' + ext), optimize=True, lossless=True)

    def save_animation(self, ext):
        print(ext)
        if len(FrameListView.Model.Frames) < 2: return
        images = []
        for frame in FrameListView.Model.Frames:
            image = Image.new('P', (frame.Pixels.Width, frame.Pixels.Height))
            image.putpalette([0,0,0,255,255,255])
            image.putdata(frame.Pixels.Pixels.reshape(frame.Pixels.Width * frame.Pixels.Height).tolist())
            images.append(image)

        image.save(os.path.join(os.getcwd(), 'animation.' + ext), save_all=True, append_images=images, duration=AnimationDurationSetDialog.Duration, loop=AnimationDurationSetDialog.Loop, optimize=False)
#        image.save(os.path.join(os.getcwd(), 'animation.' + ext), save_all=True, append_images=images, duration=100, loop=0, optimize=False)
#        image.save(os.path.join(os.getcwd(), 'pixels.' + ext), optimize=True, lossless=True, save_all=True, append_images=images)

    def load_png(self, file_path):
        image = Image.open(file_path, mode='r')
        image = image.convert('1')
        print(len(image.getdata()), list(image.getdata()))
        self.pixels = numpy.array(list(map(lambda x: 0 if 0 == x else 1, list(image.getdata())))).reshape(image.size[1], image.size[0])
        self.width, self.height = image.size
        print(self.width, self.height)
    def load_gif(self, file_path): # 値が0/255で出力されてしまうので0/1に変換する
        image = Image.open(file_path, mode='r')
        self.width, self.height = image.size
        self.pixels = numpy.array(list(map(lambda x: 0 if 0 == x else 1, list(image.getdata())))).reshape(self.height, self.width)
    def load_webp(self, file_path): # 値が[0,0,0]/[255,255,255]で出力されてしまうので0/1に変換する
        image = Image.open(file_path, mode='r')
        self.width, self.height = image.size
        self.pixels = numpy.array(list(map(lambda x: 0 if (0,0,0) == x else 1, list(image.getdata())))).reshape(self.height, self.width)

class AnimationWidget(QtWidgets.QWidget):
    def __init__(self, parent=None):
        super(self.__class__, self).__init__(parent)
        self.frame_list = FrameListView()
        globals()['FrameListView'] = self.frame_list
        self.label = AnimationLabel()
        globals()['AnimationLabel'] = self.label
        layout = QtWidgets.QBoxLayout(QtWidgets.QBoxLayout.LeftToRight)
        layout.addWidget(self.label)
        layout.addWidget(self.frame_list)
        self.setLayout(layout)
    @property
    def Label(self): return self.label
    @property
    def FrameListView(self): return self.frame_list

class AnimationLabel(QtWidgets.QLabel):
    def __init__(self, parent=None):
        super(self.__class__, self).__init__(parent)
        self.__is_stop = True
        self.__frame_index = 0
        self.start_animation()
    def mousePressEvent(self, event):
        if event.buttons() & QtCore.Qt.LeftButton:
            self.__is_stop = not self.__is_stop
            print('is_stop:', self.__is_stop)
            self.start_animation()
    def start_animation(self):
        self.setPixmap(FrameListView.Model.Frames[self.__frame_index].Icon.pixmap(16,16))
        if not self.__is_stop:
            if self.__frame_index < FrameListView.Model.rowCount()-1: self.__frame_index += 1
            else: self.__frame_index = 0
            QtCore.QTimer.singleShot(AnimationDurationSetDialog.Duration, self.start_animation)

class FrameListView(QtWidgets.QListView):
    def __init__(self, parent=None):
        super(self.__class__, self).__init__(parent)
        self.resizeContents(16*16, 16)
        self.model = FrameListModel()
        self.model.appendRow()
        self.setModel(self.model)
        globals()['FrameListModel'] = self.model
        self.resize(16*32, 32)
        self.actions = {}
        self.__create_add_frame_action()
        self.__create_delete_frame_action()
        self.setCurrentIndex(self.model.index(0,0))
        self.setFlow(QtWidgets.QListView.LeftToRight)
        self.duration_dialog = AnimationDurationSetDialog()
        globals()['AnimationDurationSetDialog'] = self.duration_dialog
        self.show()
    def mouseMoveEvent(self, event):
        super(self.__class__, self).mousePressEvent(event)
    def mousePressEvent(self, event):
        super(self.__class__, self).mousePressEvent(event)
        for idx in self.selectedIndexes():
            frame = idx.data(QtCore.Qt.UserRole)
            Drawable.Pixels = frame.Pixels
            Window.widget.view.scene().update()
        if event.buttons() & QtCore.Qt.RightButton:
            self.duration_dialog.show()
    def update_icon(self):
        for idx in self.selectedIndexes():
            self.model.update_icon(idx)
        self.update()
        self.repaint()
    @property
    def Model(self): return self.model
    @property
    def AddFrameAction(self): return self.actions['AddFrame']
    @property
    def DeleteFrameAction(self): return self.actions['DeleteFrame']
    def __create_add_frame_action(self):
        a = QtWidgets.QAction('Add frame')
        a.setObjectName('AddFrame')
        a.setShortcut('Ctrl+Alt+N')
        a.triggered.connect(self.model.appendRow)
        self.actions['AddFrame'] = a
    def __create_delete_frame_action(self):
        a = QtWidgets.QAction('Delete frame')
        a.setObjectName('DeleteFrame')
        a.setShortcut('Ctrl+Alt+D')
        a.triggered.connect(self.__delete_frame)
        self.actions['DeleteFrame'] = a
    def __delete_frame(self):
        if len(self.model.Frames) < 2: return
        for idx in self.selectedIndexes():
            if idx.row() == self.model.rowCount()-1:
                self.setCurrentIndex(self.model.index(idx.row()-1,0))
            else:
                self.setCurrentIndex(self.model.index(idx.row(),0))
            self.model.removeRow(idx)
        for idx in self.selectedIndexes():
            frame = idx.data(QtCore.Qt.UserRole)
            Drawable.Pixels = frame.Pixels
            Window.widget.view.scene().update()

class FrameListModel(QtCore.QAbstractListModel):
    def __init__(self, parent=None):
        super(self.__class__, self).__init__(parent)
        self.frames = []
    def rowCount(self, parent=QtCore.QModelIndex()):
        if parent.isValid(): return 0
        return len(self.frames)
    def data(self, index, role=QtCore.Qt.DisplayRole):
        if role == QtCore.Qt.DecorationRole:
            return self.frames[index.row()].Icon
        elif  role == QtCore.Qt.UserRole:
            return self.frames[index.row()]
    def appendRow(self):
        self.beginInsertRows(QtCore.QModelIndex(), self.rowCount(), self.rowCount())
        self.frames.append(Frame())
        self.endInsertRows()
    def removeRow(self, index):
        self.beginRemoveRows(QtCore.QModelIndex(), self.rowCount(), self.rowCount())
        print(index.row())
        self.frames.pop(index.row())
        self.endRemoveRows()
    def update_icon(self, index):
        self.frames[index.row()].update_icon()
    @property
    def Frames(self): return self.frames

class Frame:
    def __init__(self):
        self.pixels = Pixels()
        self.icon = QtGui.QImage(self.pixels.Width, self.pixels.Height, QtGui.QImage.Format_Mono)
        self.update_icon()
    def update_icon(self):
        image = QtGui.QImage(self.pixels.Width, self.pixels.Height, QtGui.QImage.Format_Mono)
        for y in range(self.pixels.Height):
            for x in range(self.pixels.Width):
                image.setPixel(x, y, self.pixels.Pixels[y][x])
                if 1 < self.pixels.Pixels[y][x]: print(self.pixels.Pixels[y][x])
        self.icon = QtGui.QIcon(QtGui.QPixmap.fromImage(image))
    @property
    def Pixels(self): return self.pixels
    @Pixels.setter
    def Pixels(self, value): self.pixels = value
    @property
    def Icon(self): return self.icon
    @Icon.setter
    def Icon(self, value): self.icon = value

class AnimationDurationSetDialog(QtWidgets.QDialog):
    def __init__(self, parent=None):
        super(self.__class__, self).__init__(parent)
        self.setWindowTitle("Set duration")
        self.duration = QtWidgets.QSpinBox()
        self.loop = QtWidgets.QSpinBox()
        self.duration.setMinimum(0)
        self.duration.setMaximum(1000*60*60*24)
        self.duration.setSingleStep(1)
        self.loop.setMinimum(0)
        self.loop.setMaximum(2**30)
        self.loop.setSingleStep(1)
        self.duration.setValue(100)
        self.loop.setValue(0)
        layout = QtWidgets.QFormLayout()
        layout.addRow("Duration", self.duration)
        layout.addRow("Loop time", self.loop)
        self.setLayout(layout)
        self.x = self.geometry().x()
        self.y = self.geometry().y()
        self.w = 0
        self.h = 0

    def show(self):
        self.setGeometry(self.x, self.y, self.w, self.h)
        super(self.__class__, self).show()
    def keyPressEvent(self, event):
        if event.key() == QtCore.Qt.Key_Escape:
            self.x = self.geometry().x()
            self.y = self.geometry().y()
            self.w = self.geometry().width()
            self.h = self.geometry().height()
        super(self.__class__, self).keyPressEvent(event)
        
    @property
    def Duration(self): return self.duration.value()
    @property
    def Loop(self): return self.loop.value()

if __name__ == "__main__":
    app = QtWidgets.QApplication(sys.argv)
    window = Window()
    sys.exit(app.exec_())

python3 main.py

苦労した所

リスト横表示

　setFlow()メソッド。

class FrameListView(QtWidgets.QListView):
    def __init__(self, parent=None):
        ...
        self.setFlow(QtWidgets.QListView.LeftToRight)

QDialog

　アニメ間隔とループ回数を入力する自作ダイアログを作った。QDialogクラスを継承して。

　デフォルトだと毎回画面中央に表示されてしまう。前回閉じた位置で表示して欲しかった。それは自前で制御せねばならなかった。

class AnimationDurationSetDialog(QtWidgets.QDialog):
    ...
    def show(self):
        self.setGeometry(self.x, self.y, self.w, self.h)
        super(self.__class__, self).show()

    def keyPressEvent(self, event):
        if event.key() == QtCore.Qt.Key_Escape:
            self.x = self.geometry().x()
            self.y = self.geometry().y()
            self.w = self.geometry().width()
            self.h = self.geometry().height()
        super(self.__class__, self).keyPressEvent(event)

QSpinBox

　アニメ間隔とループ回数を入力するウィジェットとしてQSpinBoxを使った。

　ネットではQLineEditのほうが情報があった。

　しかし数値入力ならQSpinBoxのほうが良い。インクリメントとデクリメントできるボタンとキー入力がデフォルト実装されている。

アニメーション

　アニメーションに使えそうなクラスとして以下の候補を見つけた。

• QMovie
• QVariantAnimation
• QTimer

　今回の要件に適合したのはQTimerだけだった。

　QMovieはファイルを参照する。たとえばGIFアニメファイルから再生する。今回はエディタでファイルを更新しながらアニメも更新して欲しかったのだが、ダメだった。起動時にanimation.gifファイルが存在しないと、それ以降でファイル出力しても表示されなかった。

　QVariantAnimationに至っては使い方がわからない。valueChangedイベント処理を呼び出すことができなかった。そもそも用途がよくわからない。今回のように画像を変更してアニメさせるのではなく、座標位置を変更してアニメさせるという使い方がネットにあった。そういうものなのか？

バグ

1. ドット描画時にドット抜けする
2. ドット描画時にリストのアイコンが再描画されない

　相変わらず修正できていない。

所感

　手探りでめっちゃ苦労した。

対象環境

• 2020-05-10
• Raspbierry pi 4 Model B
• Raspbian buster 10.0 2019-09-26 ※
• bash 5.0.3(1)-release
• Qt 5.11
• Python 3.7.3
• PySide2
• Pillow 7.1.2

$ uname -a
Linux raspberrypi 4.19.97-v7l+ #1294 SMP Thu Jan 30 13:21:14 GMT 2020 armv7l GNU/Linux