def paintEvent(self, event): if self.flag: qp = QPainter() qp.begin(self) qp.setBrush( QColor(random.randrange(255), random.randrange(255), random.randrange(255))) a = random.randrange(1, 351) qp.drawEllipse(100, 100, a, a) qp.end()
def paintEvent(self, event): painter = QPainter(self) painter.setRenderHint(QPainter.HighQualityAntialiasing) painter.setPen(QPen(Qt.red, 3)) painter.setBrush(Qt.transparent) painter.translate(self.width() / 2, self.height() / 2) painter.drawEllipse(QPoint(0, 0), self.outer_circle, self.outer_circle) painter.drawEllipse(QPoint(self.ball.x, self.ball.y), self.ball.r, self.ball.r)
def paintEvent(self, event): ''' @param event QPaintEvent ''' p = QPainter(self) p.setRenderHint(QPainter.Antialiasing) size = 16 pixmapSize = round(size * self.data().animationPixmap.devicePixelRatioF()) # Center the pixmap in rect r = QRect(self.rect()) r.setX((r.width() - size) / 2) r.setY((r.height() - size) / 2) r.setWidth(size) r.setHeight(size) if self._animationRunning: p.drawPixmap( r, self.data().animationPixmap, QRect(self._currentFrame * pixmapSize, 0, pixmapSize, pixmapSize)) elif self._audioIconDisplayed and not self._tab.isPinned(): self._audioIconRect = QRect(r) p.drawPixmap( r, self._tab.isMuted() and self.data().audioMutedPixmap or self.data().audioPlayingPixmap) elif not self._sitePixmap.isNull(): p.drawPixmap(r, self._sitePixmap) elif self._tab and self._tab.isPinned(): p.drawPixmap(r, IconProvider.emptyWebIcon().pixmap(size)) # Draw audio icon on top of site icon for pinned tabs if not self._animationRunning and self._audioIconDisplayed and self._tab.isPinned( ): s = size - 4 r0 = QRect(self.width() - 4, 0, s, s) self._audioIconRect = r0 c = self.palette().color(QPalette.Window) c.setAlpha(180) p.setPen(c) p.setBrush(c) p.drawEllipse(r) p.drawPixmap( r, self._tab.isMuted() and self.data().audioMutedPixmap or self.data().audioPlayingPixmap) # Draw background activity indicator if self._tab and self._tab.isPinned() and self._tab.webView( ).backgroundActivity(): s = 5 # Background r1 = QRect(self.width() - s - 2, self.height() - s - 2, s + 2, s + 2) c1 = self.palette().color(QPalette.Window) c1.setAlpha(180) p.setPen(Qt.transparent) p.setBrush(c1) p.drawEllipse(r1) # Forground r2 = QRect(self.width() - s - 1, self.height() - s - 1, s, s) c2 = self.palette().color(QPalette.Text) p.setPen(Qt.transparent) p.setBrush(c2) p.drawEllipse(r2)
class PaintBoard(QWidget): # Define virtual panel coordinates for different shapes/regions VPCoord_Start = [316, 332] #LeftTopX, Y VPCoord_Circle = [316, 332, 336, 363] #LeftTopX, Y, RightBotX, Y VPCoord_Rect = [336, 332, 356, 363] #LeftTopX, Y, RightBotX, Y VPCoord_Tri = [316, 363, 336, 395] #LeftTopX, Y, RightBotX, Y VPCoord_Line = [336, 363, 356, 395] #LeftTopX, Y, RightBotX, Y # A flag to check if the user is currently using the virtual panel usingVP = False def __init__(self, sizeX, sizeY, Parent=None): ''' Constructor ''' super().__init__(Parent) self.__InitData(sizeX, sizeY) #Initialize Data first, then interface/view self.__InitView() print("Init PaintBoard") def __InitView(self): self.setFixedSize(self.__size) def __InitData(self, sizeX, sizeY): self.__size = QSize(sizeX, sizeY) self.__board = QPixmap( self.__size) #Make a new QPixmap as paint board,350px * 250px self.__board.fill(Qt.white) #Fill the paint board with white self.__IsEmpty = True #board is empty by default self.EraserMode = False #eraser mode is disabled by default self.__lastPos = None self.__currentPos = QPoint(0, 0) self.__painter = QPainter() self.__thickness = 1 #default pen thickness is 1 self.__penColor = QColor("black") #default color is black self.__colorList = QColor.colorNames() #get the list of colors def Clear(self): #Clear the board self.__board.fill(Qt.white) self.update() self.__IsEmpty = True def ChangePenColor(self, color="black"): self.__penColor = QColor(color) def ChangePenThickness(self, thickness=1): self.__thickness = thickness def IsEmpty(self): #Is the board empty return self.__IsEmpty def GetContentAsQImage(self): #return the content of the board (return QImage) image = self.__board.toImage() return image def paintEvent(self, paintEvent): self.__painter.begin(self) self.__painter.drawPixmap(0, 0, self.__board) self.__painter.end() # print("inside paintEvent") def penPressEvent(self, pos): self.__currentPos = QPoint(pos[0], pos[1]) self.__lastPos = self.__currentPos def penMoveEvent(self, pos, pressure): pen_x = pos[0] pen_y = pos[1] pen_pressure = pressure if self.__lastPos is None: self.__lastPos = QPoint(pen_x, pen_y) elif (abs(pen_x - self.__lastPos.x()) > 21 or abs(pen_y - self.__lastPos.y()) > 21): self.__lastPos = QPoint(pen_x, pen_y) self.__currentPos = QPoint(pen_x, pen_y) self.__painter.begin(self.__board) if self.EraserMode == False: #Non-Eraser mode self.__painter.setPen(QPen( self.__penColor, self.__thickness)) #Set pen color, thickness else: #Eraser mode: pen color is white, thickness is 6 self.__painter.setPen(QPen(Qt.white, 6)) self.__painter.drawLine(self.__lastPos, self.__currentPos) self.__painter.end() self.__lastPos = self.__currentPos self.update() #Show updates def penVPEvent(self, pos, pressure): pass ''' # Check if the pressure is over 500 if(pen_pressure > 400): # Check which region the pen is in and prepare to draw shape accordingly if(pen_x < self.VPCoord_Circle[2] and pen_y < self.VPCoord_Circle[3]): print("A") elif(pen_x < self.VPCoord_Rect[2] and pen_y < self.VPCoord_Rect[3]): print("B") elif(pen_x < self.VPCoord_Tri[2] and pen_y < self.VPCoord_Tri[3]): print("C") elif(pen_x < self.VPCoord_Line[2] and pen_y < self.VPCoord_Line[3]): print("D") ''' def penReleaseEvent(self, pos): self.__IsEmpty = False #board is not empty def paintEllipse(self, center_x, center_y, radias1, radias2): self.__painter.begin(self.__board) self.__painter.setPen(QPen(self.__penColor, self.__thickness)) self.__painter.drawEllipse(QPoint(center_x, center_y), radias1, radias2) self.__painter.end() self.update() #Show updates def paintRect(self, center_x, center_y, upper_left_x, upper_left_y): width = abs(2 * (center_x - upper_left_x)) height = abs(2 * (center_y - upper_left_y)) self.__painter.begin(self.__board) self.__painter.setPen(QPen(self.__penColor, self.__thickness)) self.__painter.drawRect(upper_left_x, upper_left_y, width, height) self.__painter.end() self.update() #Show updates def paintTriangle(self, points): self.__painter.begin(self.__board) self.__painter.setPen(QPen(self.__penColor, self.__thickness)) self.__painter.drawPolygon(points) self.__painter.end() self.update() #Show updates def paintLine(self, P1_x, P1_y, P2_x, P2_y): P1 = QPoint(P1_x, P1_y) P2 = QPoint(P2_x, P2_y) self.__painter.begin(self.__board) self.__painter.drawLine(P1, P2) self.__painter.end() self.update() #Show updates
class PaintBoard(QLabel): signal_right_mouse = pyqtSignal(int) signal_draw = pyqtSignal() def __init__(self, parent=None): super().__init__(parent) self.__parent = parent self.__board = QPixmap(QSize(440, 440)) self.__board.fill(Qt.transparent) self.__board_old = self.__board.copy() self.__board_old_old = self.__board.copy() self.__board_before_dots = self.__board.copy() self.__thickness = 10 # 默认画笔粗细为10px self.__penColor = QColor(0, 0, 0, 128) self.__painter = QPainter() self.__pen = QPen(self.__penColor, self.__thickness) self.__pen_seg = QPen(QColor(0, 0, 0, 128)) self.__brush = QBrush(QColor(0, 0, 0, 128)) self.__pen.setCapStyle(Qt.RoundCap) #self.__painter.setPen(self.__pen) self.__lastPos = QPoint(0, 0) # 上一次鼠标位置 self.__currentPos = QPoint(0, 0) # 当前的鼠标位置 self.__points = [] # dots模式的点集 self.__mouse_pressed = False self.__can_undo = False self.__has_seg = False self.__mode = 1 self.__ERASE = 0 self.__LINE = 1 self.__RECT = 2 self.__CIRCLE = 3 self.__DOTS = 4 self.__transparent = False self.__trans_board = self.__board.copy() self.__trans_board.fill(Qt.transparent) @staticmethod def dist(p1, p2): return math.hypot(p1.x() - p2.x(), p1.y() - p2.y()) # Each time paintEvent is called it clean the space where it is going to draw. # So it does not save memory of the previous drawings, # A simple solution is to first paint a QPixmap to store what you have painted. # And then paint the widget with that QPixmap. def set_trans(self, trans): self.__transparent = trans self.update() def is_trans(self): return self.__transparent def paintEvent(self, paint_event): # 把board绘制到界面上 self.__painter.begin(self) if not self.__transparent: self.__painter.drawPixmap(0, 0, self.__board) else: self.__painter.drawPixmap(0, 0, self.__trans_board) #结果图关闭mask self.__painter.end() def mousePressEvent(self, mouse_event): if mouse_event.button() == Qt.LeftButton: self.__mouse_pressed = True self.__board_old_old = self.__board_old.copy() self.__board_old = self.__board.copy() self.__currentPos = mouse_event.pos() self.__lastPos = self.__currentPos if self.__mode == self.__DOTS: if len(self.__points) == 0: self.__board_before_dots = self.__board.copy() self.__parent.childAt(740, 0).setEnabled(False) self.__parent.childAt(840, 0).setEnabled(False) self.__parent.childAt(370, 0).setEnabled(False) self.__parent.childAt(300, 610).setEnabled(False) if len(self.__points) > 0: print( self.dist( self.__points[0], QPoint(self.__currentPos.x(), self.__currentPos.y()))) if len(self.__points) > 2 and \ self.dist(self.__points[0], QPoint(self.__currentPos.x(), self.__currentPos.y())) < 5: self.__board = self.__board_before_dots.copy() self.__painter.begin(self.__board) if self.__ERASE: self.__painter.setCompositionMode( QPainter.CompositionMode_Clear) else: self.__painter.setCompositionMode( QPainter.CompositionMode_Source) self.__painter.setPen(Qt.NoPen) self.__painter.setBrush(self.__brush) self.__painter.drawPolygon(QPolygon(self.__points)) self.signal_draw.emit() self.__painter.end() self.__points.clear() self.__parent.childAt(740, 0).setEnabled(True) self.__parent.childAt(840, 0).setEnabled(True) self.__parent.childAt(370, 0).setEnabled(True) self.__parent.childAt(300, 610).setEnabled(True) self.update() else: self.__points.append( QPoint(self.__currentPos.x(), self.__currentPos.y())) if not (self.__mode == self.__DOTS and len(self.__points) == 1): self.__can_undo = True self.__parent.childAt(70, 610).setEnabled(True) else: self.__can_undo = False self.__parent.childAt(70, 610).setEnabled(False) def mouseMoveEvent(self, mouse_event): # 把线绘制到board上 self.__currentPos = mouse_event.pos() if self.__mode != self.__LINE: if len(self.__points) > 0: self.__board = self.__board_old.copy() elif not self.__mode == self.__DOTS: if self.__mouse_pressed: self.__board = self.__board_old.copy() self.__painter.begin(self.__board) self.__painter.setPen(self.__pen) if self.__ERASE: self.__painter.setCompositionMode(QPainter.CompositionMode_Clear) else: self.__painter.setCompositionMode(QPainter.CompositionMode_Source) if self.__mode == self.__LINE: if self.__mouse_pressed: self.__painter.drawLine(self.__lastPos, self.__currentPos) self.signal_draw.emit() elif self.__mode == self.__RECT: self.__painter.setPen(Qt.NoPen) self.__painter.setBrush(self.__brush) if self.__mouse_pressed: self.__painter.drawRect( self.__lastPos.x(), self.__lastPos.y(), (self.__currentPos.x() - self.__lastPos.x()), (self.__currentPos.y() - self.__lastPos.y())) self.signal_draw.emit() elif self.__mode == self.__CIRCLE: self.__painter.setPen(Qt.NoPen) self.__painter.setBrush(self.__brush) if self.__mouse_pressed: self.__painter.drawEllipse( self.__lastPos.x(), self.__lastPos.y(), (self.__currentPos.x() - self.__lastPos.x()), (self.__currentPos.y() - self.__lastPos.y())) self.signal_draw.emit() elif self.__mode == self.__DOTS: if len(self.__points) > 0: self.__painter.setCompositionMode( QPainter.CompositionMode_Source) self.__painter.setPen(QPen(self.__pen_seg.color(), 1)) self.__painter.drawLine(self.__points[-1], self.__currentPos) self.signal_draw.emit() self.__painter.end() if self.__mode == self.__LINE: self.__lastPos = self.__currentPos self.update() # 触发paintEvent def mouseDoubleClickEvent(self, mouse_event): if mouse_event.button() == Qt.LeftButton: if not self.__mode == self.__DOTS: if self.__has_seg: x = mouse_event.pos().x() y = mouse_event.pos().y() value = self.segment[y][x] # 注意这里x和y要反过来 self.__painter.begin(self.__board) self.paint_segment(value, x, y) self.__painter.end() self.signal_draw.emit() self.update() # 触发paintEvent def mouseReleaseEvent(self, mouse_event): if mouse_event.button() == Qt.LeftButton: self.__mouse_pressed = False if mouse_event.button() == Qt.RightButton: self.signal_right_mouse.emit(1 - self.__ERASE) return def undo(self): if self.__can_undo: if self.__mode != self.__DOTS: self.__board = self.__board_old.copy() else: if len(self.__points) == 0: self.__board = self.__board_before_dots.copy() else: self.__points.pop() self.__board = self.__board_old_old.copy() self.__board_old = self.__board_old_old.copy() self.signal_draw.emit() self.update() self.__can_undo = False self.__parent.childAt(70, 610).setEnabled(False) def update_segment(self, seg): self.segment = seg self.__parent.childAt(1040, 0).setEnabled(False) self.__has_seg = True def set_board(self, x, y): self.__board = self.__board.scaled(x, y) def update_board(self, board): self.__board = board self.update() def paint_segment(self, value, x, y): has_painted = np.zeros(self.segment.shape, dtype=np.uint8) point_stack = [(x, y)] while len(point_stack) > 0: point = point_stack.pop() x = point[0] y = point[1] self.__painter.setPen(self.__pen_seg) if self.__ERASE: self.__painter.setCompositionMode( QPainter.CompositionMode_Clear) else: self.__painter.setCompositionMode( QPainter.CompositionMode_Source) self.__painter.drawPoint(x, y) has_painted[y][x] = 1 if x + 1 < self.segment.shape[1] and has_painted[y][ x + 1] == 0 and value == self.segment[y][x + 1]: point_stack.append((x + 1, y)) if x - 1 >= 0 and has_painted[y][ x - 1] == 0 and value == self.segment[y][x - 1]: point_stack.append((x - 1, y)) if y + 1 < self.segment.shape[0] and has_painted[ y + 1][x] == 0 and value == self.segment[y + 1][x]: point_stack.append((x, y + 1)) if y - 1 >= 0 and has_painted[ y - 1][x] == 0 and value == self.segment[y - 1][x]: point_stack.append((x, y - 1)) def Thanos(self, label): if len(label) == 0: return False image = self.__board.copy() image.fill(Qt.transparent) pixels = image.toImage() s = pixels.bits().asstring(pixels.width() * pixels.height() * 4) arr = np.fromstring(s, dtype=np.uint8).reshape( (pixels.height(), pixels.width(), 4)) np.set_printoptions(threshold=sys.maxsize) mask = arr[..., 3] for l in label: mask[self.segment == l] = 255 expand_mask(mask, 5) #Image.fromarray(np.uint8(mask)).save('mask_10.jpg') return mask def set_seg(self): self.__has_seg = False def set_pen(self, value): self.__pen.setWidth(value) def pen_black(self): self.__pen.setColor(QColor(0, 0, 0, 128)) def pen_white(self): self.__pen.setColor(QColor(255, 255, 255, 128)) def geo_black(self): self.__pen_seg.setColor(QColor(0, 0, 0, 128)) self.__brush = QBrush(QColor(0, 0, 0, 128)) def geo_white(self): self.__pen_seg.setColor(QColor(255, 255, 255, 128)) self.__brush = QBrush(QColor(255, 255, 255, 128)) def switch_mode(self): self.__ERASE = 1 - self.__ERASE def set_mode(self, mode): self.__ERASE = mode def tool_pen(self): self.__mode = self.__LINE def tool_rect(self): self.__mode = self.__RECT def tool_circle(self): self.__mode = self.__CIRCLE def tool_dots(self): self.__mode = self.__DOTS def clear_board(self): self.__board.fill(Qt.transparent) self.__board_old = self.__board.copy() self.__board_before_dots = self.__board.copy() self.__board_old_old = self.__board.copy() self.__parent.childAt(70, 610).setEnabled(False) self.signal_draw.emit() self.update() def save(self): # save_path = QFileDialog.getSaveFileName(self, 'Save Your Paint', '.\\', '*.jpg') save_path = 'D:/test.png', '*.png' print(save_path) if save_path[0] == "": print("Save cancel") return image = self.__board pixels = image.toImage() s = pixels.bits().asstring(pixels.width() * pixels.height() * 4) arr = np.fromstring(s, dtype=np.uint8).reshape( (pixels.height(), pixels.width(), 4)) np.set_printoptions(threshold=sys.maxsize) mask = arr[..., 3] print(mask) # qimage2numpy(pixels) # Pixels can only be accessed through QPainter functions or by converting the QPixmap to a QImage. image.save(save_path[0]) def get_mask(self): image = self.__board pixels = image.toImage() s = pixels.bits().asstring(pixels.width() * pixels.height() * 4) arr = np.fromstring(s, dtype=np.uint8).reshape( (pixels.height(), pixels.width(), 4)) np.set_printoptions(threshold=sys.maxsize) mask = arr[..., 3] # 取alpha通道,就是不透明度 mask[mask > 0] = 255 return mask def get_board(self): return self.__board.copy() def test(self): # self.pix = QPixmap("road.jpg") self.__painter.begin(self.__board) for i in range(301): for j in range(301): self.__painter.drawPoint(i, j) self.__painter.end() self.update()