# -*- coding: iso-8859-1 -*- #---------------------------------------------------------------------------- # Name: drawn.py # Purpose: DrawnShape class # # Author: Pierre Hjälm (from C++ original by Julian Smart) # # Created: 2004-08-25 # RCS-ID: $Id$ # Copyright: (c) 2004 Pierre Hjälm - 1998 Julian Smart # License: wxWindows license #---------------------------------------------------------------------------- import os.path from _basic import RectangleShape from _oglmisc import * METAFLAGS_OUTLINE = 1 METAFLAGS_ATTACHMENTS = 2 DRAWN_ANGLE_0 = 0 DRAWN_ANGLE_90 = 1 DRAWN_ANGLE_180 = 2 DRAWN_ANGLE_270 = 3 # Drawing operations DRAWOP_SET_PEN = 1 DRAWOP_SET_BRUSH = 2 DRAWOP_SET_FONT = 3 DRAWOP_SET_TEXT_COLOUR = 4 DRAWOP_SET_BK_COLOUR = 5 DRAWOP_SET_BK_MODE = 6 DRAWOP_SET_CLIPPING_RECT = 7 DRAWOP_DESTROY_CLIPPING_RECT = 8 DRAWOP_DRAW_LINE = 20 DRAWOP_DRAW_POLYLINE = 21 DRAWOP_DRAW_POLYGON = 22 DRAWOP_DRAW_RECT = 23 DRAWOP_DRAW_ROUNDED_RECT = 24 DRAWOP_DRAW_ELLIPSE = 25 DRAWOP_DRAW_POINT = 26 DRAWOP_DRAW_ARC = 27 DRAWOP_DRAW_TEXT = 28 DRAWOP_DRAW_SPLINE = 29 DRAWOP_DRAW_ELLIPTIC_ARC = 30 class DrawOp(object): def __init__(self, theOp): self._op = theOp def GetOp(self): return self._op def GetPerimeterPoint(self, x1, y1, x2, y2, xOffset, yOffset, attachmentMode): return False def Scale(self,scaleX, scaleY): pass def Translate(self, x, y): pass def Rotate(self, x, y, theta, sinTheta, cosTheta): pass class OpSetGDI(DrawOp): """Set font, brush, text colour.""" def __init__(self, theOp, theImage, theGdiIndex, theMode = 0): DrawOp.__init__(self, theOp) self._gdiIndex = theGdiIndex self._image = theImage self._mode = theMode def Do(self, dc, xoffset = 0, yoffset = 0): if self._op == DRAWOP_SET_PEN: # Check for overriding this operation for outline colour if self._gdiIndex in self._image._outlineColours: if self._image._outlinePen: dc.SetPen(self._image._outlinePen) else: try: dc.SetPen(self._image._gdiObjects[self._gdiIndex]) except IndexError: pass elif self._op == DRAWOP_SET_BRUSH: # Check for overriding this operation for outline or fill colour if self._gdiIndex in self._image._outlineColours: # Need to construct a brush to match the outline pen's colour if self._image._outlinePen: br = wx.Brush(self._image._outlinePen, wx.SOLID) if br: dc.SetBrush(br) elif self._gdiIndex in self._image._fillColours: if self._image._fillBrush: dc.SetBrush(self._image._fillBrush) else: brush = self._image._gdiObjects[self._gdiIndex] if brush: dc.SetBrush(brush) elif self._op == DRAWOP_SET_FONT: try: dc.SetFont(self._image._gdiObjects[self._gdiIndex]) except IndexError: pass elif self._op == DRAWOP_SET_TEXT_COLOUR: dc.SetTextForeground(wx.Colour(self._r, self._g, self._b)) elif self._op == DRAWOP_SET_BK_COLOUR: dc.SetTextBackground(wx.Colour(self._r, self._g, self._b)) elif self._op == DRAWOP_SET_BK_MODE: dc.SetBackgroundMode(self._mode) class OpSetClipping(DrawOp): """Set/destroy clipping.""" def __init__(self, theOp, theX1, theY1, theX2, theY2): DrawOp.__init__(self, theOp) self._x1 = theX1 self._y1 = theY1 self._x2 = theX2 self._y2 = theY2 def Do(self, dc, xoffset, yoffset): if self._op == DRAWOP_SET_CLIPPING_RECT: dc.SetClippingRegion(self._x1 + xoffset, self._y1 + yoffset, self._x2 + xoffset, self._y2 + yoffset) elif self._op == DRAWOP_DESTROY_CLIPPING_RECT: dc.DestroyClippingRegion() def Scale(self, scaleX, scaleY): self._x1 *= scaleX self._y1 *= scaleY self._x2 *= scaleX self._y2 *= scaleY def Translate(self, x, y): self._x1 += x self._y1 += y class OpDraw(DrawOp): """Draw line, rectangle, rounded rectangle, ellipse, point, arc, text.""" def __init__(self, theOp, theX1, theY1, theX2, theY2, theRadius = 0.0, s = ""): DrawOp.__init__(self, theOp) self._x1 = theX1 self._y1 = theY1 self._x2 = theX2 self._y2 = theY2 self._x3 = 0.0 self._y3 = 0.0 self._radius = theRadius self._textString = s def Do(self, dc, xoffset, yoffset): if self._op == DRAWOP_DRAW_LINE: dc.DrawLine(self._x1 + xoffset, self._y1 + yoffset, self._x2 + xoffset, self._y2 + yoffset) elif self._op == DRAWOP_DRAW_RECT: dc.DrawRectangle(self._x1 + xoffset, self._y1 + yoffset, self._x2, self._y2) elif self._op == DRAWOP_DRAW_ROUNDED_RECT: dc.DrawRoundedRectangle(self._x1 + xoffset, self._y1 + yoffset, self._x2, self._y2, self._radius) elif self._op == DRAWOP_DRAW_ELLIPSE: dc.DrawEllipse(self._x1 + xoffset, self._y1 + yoffset, self._x2, self._y2) elif self._op == DRAWOP_DRAW_ARC: dc.DrawArc(self._x2 + xoffset, self._y2 + yoffset, self._x3 + xoffset, self._y3 + yoffset, self._x1 + xoffset, self._y1 + yoffset) elif self._op == DRAWOP_DRAW_ELLIPTIC_ARC: dc.DrawEllipticArc(self._x1 + xoffset, self._y1 + yoffset, self._x2, self._y2, self._x3 * 360 / (2 * math.pi), self._y3 * 360 / (2 * math.pi)) elif self._op == DRAWOP_DRAW_POINT: dc.DrawPoint(self._x1 + xoffset, self._y1 + yoffset) elif self._op == DRAWOP_DRAW_TEXT: dc.DrawText(self._textString, self._x1 + xoffset, self._y1 + yoffset) def Scale(self, scaleX, scaleY): self._x1 *= scaleX self._y1 *= scaleY self._x2 *= scaleX self._y2 *= scaleY if self._op != DRAWOP_DRAW_ELLIPTIC_ARC: self._x3 *= scaleX self._y3 *= scaleY self._radius *= scaleX def Translate(self, x, y): self._x1 += x self._y1 += y if self._op == DRAWOP_DRAW_LINE: self._x2 += x self._y2 += y elif self._op == DRAWOP_DRAW_ARC: self._x2 += x self._y2 += y self._x3 += x self._y3 += y def Rotate(self, x, y, theta, sinTheta, cosTheta): newX1 = self._x1 * cosTheta + self._y1 * sinTheta + x * (1 - cosTheta) + y * sinTheta newY1 = self._x1 * sinTheta + self._y1 * cosTheta + y * (1 - cosTheta) + x * sinTheta if self._op == DRAWOP_DRAW_LINE: newX2 = self._x2 * cosTheta - self._y2 * sinTheta + x * (1 - cosTheta) + y * sinTheta newY2 = self._x2 * sinTheta + self._y2 * cosTheta + y * (1 - cosTheta) + x * sinTheta; self._x1 = newX1 self._y1 = newY1 self._x2 = newX2 self._y2 = newY2 elif self._op in [DRAWOP_DRAW_RECT, DRAWOP_DRAW_ROUNDED_RECT, DRAWOP_DRAW_ELLIPTIC_ARC]: # Assume only 0, 90, 180, 270 degree rotations. # oldX1, oldY1 represents the top left corner. Find the # bottom right, and rotate that. Then the width/height is # the difference between x/y values. oldBottomRightX = self._x1 + self._x2 oldBottomRightY = self._y1 + self._y2 newBottomRightX = oldBottomRightX * cosTheta - oldBottomRightY * sinTheta + x * (1 - cosTheta) + y * sinTheta newBottomRightY = oldBottomRightX * sinTheta + oldBottomRightY * cosTheta + y * (1 - cosTheta) + x * sinTheta # Now find the new top-left, bottom-right coordinates. minX = min(newX1, newBottomRightX) minY = min(newY1, newBottomRightY) maxX = max(newX1, newBottomRightX) maxY = max(newY1, newBottomRightY) self._x1 = minX self._y1 = minY self._x2 = maxX - minX # width self._y2 = maxY - minY # height if self._op == DRAWOP_DRAW_ELLIPTIC_ARC: # Add rotation to angles self._x3 += theta self._y3 += theta elif self._op == DRAWOP_DRAW_ARC: newX2 = self._x2 * cosTheta - self._y2 * sinTheta + x * (1 - cosTheta) + y * sinTheta newY2 = self._x2 * sinTheta + self._y2 * cosTheta + y * (1 - cosTheta) + x * sinTheta newX3 = self._x3 * cosTheta - self._y3 * sinTheta + x * (1 - cosTheta) + y * sinTheta newY3 = self._x3 * sinTheta + self._y3 * cosTheta + y * (1 - cosTheta) + x * sinTheta self._x1 = newX1 self._y1 = newY1 self._x2 = newX2 self._y2 = newY2 self._x3 = newX3 self._y3 = newY3 class OpPolyDraw(DrawOp): """Draw polygon, polyline, spline.""" def __init__(self, theOp, thePoints): DrawOp.__init__(self, theOp) self._noPoints = len(thePoints) self._points = thePoints def Do(self, dc, xoffset, yoffset): if self._op == DRAWOP_DRAW_POLYLINE: dc.DrawLines(self._points, xoffset, yoffset) elif self._op == DRAWOP_DRAW_POLYGON: dc.DrawPolygon(self._points, xoffset, yoffset) elif self._op == DRAWOP_DRAW_SPLINE: dc.DrawSpline(self._points) # no offsets in DrawSpline def Scale(self, scaleX, scaleY): for i in range(self._noPoints): self._points[i] = wx.Point(self._points[i][0] * scaleX, self._points[i][1] * scaleY) def Translate(self, x, y): for i in range(self._noPoints): self._points[i][0] += x self._points[i][1] += y def Rotate(self, x, y, theta, sinTheta, cosTheta): for i in range(self._noPoints): x1 = self._points[i][0] y1 = self._points[i][1] self._points[i] = x1 * cosTheta - y1 * sinTheta + x * (1 - cosTheta) + y * sinTheta, x1 * sinTheta + y1 * cosTheta + y * (1 - cosTheta) + x * sinTheta def OnDrawOutline(self, dc, x, y, w, h, oldW, oldH): dc.SetBrush(wx.TRANSPARENT_BRUSH) # Multiply all points by proportion of new size to old size x_proportion = abs(w / oldW) y_proportion = abs(h / oldH) dc.DrawPolygon([(x_proportion * x, y_proportion * y) for x, y in self._points], x, y) def GetPerimeterPoint(self, x1, y1, x2, y2, xOffset, yOffset, attachmentMode): # First check for situation where the line is vertical, # and we would want to connect to a point on that vertical -- # oglFindEndForPolyline can't cope with this (the arrow # gets drawn to the wrong place). if attachmentMode == ATTACHMENT_MODE_NONE and x1 == x2: # Look for the point we'd be connecting to. This is # a heuristic... for point in self._points: if point[0] == 0: if y2 > y1 and point[1] > 0: return point[0]+xOffset, point[1]+yOffset elif y2 < y1 and point[1] < 0: return point[0]+xOffset, point[1]+yOffset return FindEndForPolyline([ p[0] + xOffset for p in self._points ], [ p[1] + yOffset for p in self._points ], x1, y1, x2, y2) class PseudoMetaFile(object): """ A simple metafile-like class which can load data from a Windows metafile on all platforms. """ def __init__(self): self._currentRotation = 0 self._rotateable = True self._width = 0.0 self._height = 0.0 self._outlinePen = None self._fillBrush = None self._outlineOp = -1 self._ops = [] self._gdiObjects = [] self._outlineColours = [] self._fillColours = [] def Clear(self): self._ops = [] self._gdiObjects = [] self._outlineColours = [] self._fillColours = [] self._outlineColours = -1 def IsValid(self): return self._ops != [] def GetOps(self): return self._ops def SetOutlineOp(self, op): self._outlineOp = op def GetOutlineOp(self): return self._outlineOp def SetOutlinePen(self, pen): self._outlinePen = pen def GetOutlinePen(self, pen): return self._outlinePen def SetFillBrush(self, brush): self._fillBrush = brush def GetFillBrush(self): return self._fillBrush def SetSize(self, w, h): self._width = w self._height = h def SetRotateable(self, rot): self._rotateable = rot def GetRotateable(self): return self._rotateable def GetFillColours(self): return self._fillColours def GetOutlineColours(self): return self._outlineColours def Draw(self, dc, xoffset, yoffset): for op in self._ops: op.Do(dc, xoffset, yoffset) def Scale(self, sx, sy): for op in self._ops: op.Scale(sx, sy) self._width *= sx self._height *= sy def Translate(self, x, y): for op in self._ops: op.Translate(x, y) def Rotate(self, x, y, theta): theta1 = theta - self._currentRotation if theta1 == 0: return cosTheta = math.cos(theta1) sinTheta = math.sin(theta1) for op in self._ops: op.Rotate(x, y, theta, sinTheta, cosTheta) self._currentRotation = theta def LoadFromMetaFile(self, filename, rwidth, rheight): if not os.path.exist(filename): return False print "LoadFromMetaFile not implemented yet." return False # TODO # Scale to fit size def ScaleTo(self, w, h): scaleX = w / self._width scaleY = h / self._height self.Scale(scaleX, scaleY) def GetBounds(self): maxX, maxY, minX, minY = -99999.9, -99999.9, 99999.9, 99999.9 for op in self._ops: if op.GetOp() in [DRAWOP_DRAW_LINE, DRAWOP_DRAW_RECT, DRAWOP_DRAW_ROUNDED_RECT, DRAWOP_DRAW_ELLIPSE, DRAWOP_DRAW_POINT, DRAWOP_DRAW_TEXT]: if op._x1 < minX: minX = op._x1 if op._x1 > maxX: maxX = op._x1 if op._y1 < minY: minY = op._y1 if op._y1 > maxY: maxY = op._y1 if op.GetOp() == DRAWOP_DRAW_LINE: if op._x2 < minX: minX = op._x2 if op._x2 > maxX: maxX = op._x2 if op._y2 < minY: minY = op._y2 if op._y2 > maxY: maxY = op._y2 elif op.GetOp() in [ DRAWOP_DRAW_RECT, DRAWOP_DRAW_ROUNDED_RECT, DRAWOP_DRAW_ELLIPSE]: if op._x1 + op._x2 < minX: minX = op._x1 + op._x2 if op._x1 + op._x2 > maxX: maxX = op._x1 + op._x2 if op._y1 + op._y2 < minY: minY = op._y1 + op._y2 if op._y1 + op._y2 > maxX: maxY = op._y1 + op._y2 elif op.GetOp() == DRAWOP_DRAW_ARC: # TODO: don't yet know how to calculate the bounding box # for an arc. So pretend it's a line; to get a correct # bounding box, draw a blank rectangle first, of the # correct size. if op._x1 < minX: minX = op._x1 if op._x1 > maxX: maxX = op._x1 if op._y1 < minY: minY = op._y1 if op._y1 > maxY: maxY = op._y1 if op._x2 < minX: minX = op._x2 if op._x2 > maxX: maxX = op._x2 if op._y2 < minY: minY = op._y2 if op._y2 > maxY: maxY = op._y2 elif op.GetOp() in [DRAWOP_DRAW_POLYLINE, DRAWOP_DRAW_POLYGON, DRAWOP_DRAW_SPLINE]: for point in op._points: if point[0] < minX: minX = point[0] if point[0] > maxX: maxX = point[0] if point[1] < minY: minY = point[1] if point[1] > maxY: maxY = point[1] return [minX, minY, maxX, maxY] # Calculate size from current operations def CalculateSize(self, shape): boundMinX, boundMinY, boundMaxX, boundMaxY = self.GetBounds() # By Pierre Hjälm: This is NOT in the old version, which # gets this totally wrong. Since the drawing is centered, we # cannot get the width by measuring from left to right, we # must instead make enough room to handle the largest # coordinates #self.SetSize(boundMaxX - boundMinX, boundMaxY - boundMinY) w = max(abs(boundMinX), abs(boundMaxX)) * 2 h = max(abs(boundMinY), abs(boundMaxY)) * 2 self.SetSize(w, h) if shape: shape.SetWidth(self._width) shape.SetHeight(self._height) # Set of functions for drawing into a pseudo metafile def DrawLine(self, pt1, pt2): op = OpDraw(DRAWOP_DRAW_LINE, pt1[0], pt1[1], pt2[0], pt2[1]) self._ops.append(op) def DrawRectangle(self, rect): op = OpDraw(DRAWOP_DRAW_RECT, rect[0], rect[1], rect[2], rect[3]) self._ops.append(op) def DrawRoundedRectangle(self, rect, radius): op = OpDraw(DRAWOP_DRAW_ROUNDED_RECT, rect[0], rect[1], rect[2], rect[3]) op._radius = radius self._ops.append(op) def DrawEllipse(self, rect): op = OpDraw(DRAWOP_DRAW_ELLIPSE, rect[0], rect[1], rect[2], rect[3]) self._ops.append(op) def DrawArc(self, centrePt, startPt, endPt): op = OpDraw(DRAWOP_DRAW_ARC, centrePt[0], centrePt[1], startPt[0], startPt[1]) op._x3, op._y3 = endPt self._ops.append(op) def DrawEllipticArc(self, rect, startAngle, endAngle): startAngleRadians = startAngle * math.pi * 2 / 360 endAngleRadians = endAngle * math.pi * 2 / 360 op = OpDraw(DRAWOP_DRAW_ELLIPTIC_ARC, rect[0], rect[1], rect[2], rect[3]) op._x3 = startAngleRadians op._y3 = endAngleRadians self._ops.append(op) def DrawPoint(self, pt): op = OpDraw(DRAWOP_DRAW_POINT, pt[0], pt[1], 0, 0) self._ops.append(op) def DrawText(self, text, pt): op = OpDraw(DRAWOP_DRAW_TEXT, pt[0], pt[1], 0, 0) op._textString = text self._ops.append(op) def DrawLines(self, pts): op = OpPolyDraw(DRAWOP_DRAW_POLYLINE, pts) self._ops.append(op) # flags: # oglMETAFLAGS_OUTLINE: will be used for drawing the outline and # also drawing lines/arrows at the circumference. # oglMETAFLAGS_ATTACHMENTS: will be used for initialising attachment # points at the vertices (perhaps a rare case...) def DrawPolygon(self, pts, flags = 0): op = OpPolyDraw(DRAWOP_DRAW_POLYGON, pts) self._ops.append(op) if flags & METAFLAGS_OUTLINE: self._outlineOp = len(self._ops) - 1 def DrawSpline(self, pts): op = OpPolyDraw(DRAWOP_DRAW_SPLINE, pts) self._ops.append(op) def SetClippingRect(self, rect): OpSetClipping(DRAWOP_SET_CLIPPING_RECT, rect[0], rect[1], rect[2], rect[3]) def DestroyClippingRect(self): op = OpSetClipping(DRAWOP_DESTROY_CLIPPING_RECT, 0, 0, 0, 0) self._ops.append(op) def SetPen(self, pen, isOutline = False): self._gdiObjects.append(pen) op = OpSetGDI(DRAWOP_SET_PEN, self, len(self._gdiObjects) - 1) self._ops.append(op) if isOutline: self._outlineColours.append(len(self._gdiObjects) - 1) def SetBrush(self, brush, isFill = False): self._gdiObjects.append(brush) op = OpSetGDI(DRAWOP_SET_BRUSH, self, len(self._gdiObjects) - 1) self._ops.append(op) if isFill: self._fillColours.append(len(self._gdiObjects) - 1) def SetFont(self, font): self._gdiObjects.append(font) op = OpSetGDI(DRAWOP_SET_FONT, self, len(self._gdiObjects) - 1) self._ops.append(op) def SetTextColour(self, colour): op = OpSetGDI(DRAWOP_SET_TEXT_COLOUR, self, 0) op._r, op._g, op._b = colour.Red(), colour.Green(), colour.Blue() self._ops.append(op) def SetBackgroundColour(self, colour): op = OpSetGDI(DRAWOP_SET_BK_COLOUR, self, 0) op._r, op._g, op._b = colour.Red(), colour.Green(), colour.Blue() self._ops.append(op) def SetBackgroundMode(self, mode): op = OpSetGDI(DRAWOP_SET_BK_MODE, self, 0) self._ops.append(op) class DrawnShape(RectangleShape): """ Draws a pseudo-metafile shape, which can be loaded from a simple Windows metafile. wxDrawnShape allows you to specify a different shape for each of four orientations (North, West, South and East). It also provides a set of drawing functions for programmatic drawing of a shape, so that during construction of the shape you can draw into it as if it were a device context. Derived from: RectangleShape """ def __init__(self): RectangleShape.__init__(self, 100, 50) self._saveToFile = True self._currentAngle = DRAWN_ANGLE_0 self._metafiles=PseudoMetaFile(), PseudoMetaFile(), PseudoMetaFile(), PseudoMetaFile() def OnDraw(self, dc): # Pass pen and brush in case we have force outline # and fill colours if self._shadowMode != SHADOW_NONE: if self._shadowBrush: self._metafiles[self._currentAngle]._fillBrush = self._shadowBrush self._metafiles[self._currentAngle]._outlinePen = wx.Pen(wx.WHITE, 1, wx.TRANSPARENT) self._metafiles[self._currentAngle].Draw(dc, self._xpos + self._shadowOffsetX, self._ypos + self._shadowOffsetY) self._metafiles[self._currentAngle]._outlinePen = self._pen self._metafiles[self._currentAngle]._fillBrush = self._brush self._metafiles[self._currentAngle].Draw(dc, self._xpos, self._ypos) def SetSize(self, w, h, recursive = True): self.SetAttachmentSize(w, h) if self.GetWidth() == 0.0: scaleX = 1 else: scaleX = w / self.GetWidth() if self.GetHeight() == 0.0: scaleY = 1 else: scaleY = h / self.GetHeight() for i in range(4): if self._metafiles[i].IsValid(): self._metafiles[i].Scale(scaleX, scaleY) self._width = w self._height = h self.SetDefaultRegionSize() def Scale(self, sx, sy): """Scale the shape by the given amount.""" for i in range(4): if self._metafiles[i].IsValid(): self._metafiles[i].Scale(sx, sy) self._metafiles[i].CalculateSize(self) def Translate(self, x, y): """Translate the shape by the given amount.""" for i in range(4): if self._metafiles[i].IsValid(): self._metafiles[i].Translate(x, y) self._metafiles[i].CalculateSize(self) # theta is absolute rotation from the zero position def Rotate(self, x, y, theta): """Rotate about the given axis by the given amount in radians.""" self._currentAngle = self.DetermineMetaFile(theta) if self._currentAngle == 0: # Rotate metafile if not self._metafiles[0].GetRotateable(): return self._metafiles[0].Rotate(x, y, theta) actualTheta = theta - self._rotation # Rotate attachment points sinTheta = math.sin(actualTheta) cosTheta = math.cos(actualTheta) for point in self._attachmentPoints: x1 = point._x y1 = point._y point._x = x1 * cosTheta - y1 * sinTheta + x * (1.0 - cosTheta) + y * sinTheta point._y = x1 * sinTheta + y1 * cosTheta + y * (1.0 - cosTheta) + x * sinTheta self._rotation = theta self._metafiles[self._currentAngle].CalculateSize(self) # Which metafile do we use now? Based on current rotation and validity # of metafiles. def DetermineMetaFile(self, rotation): tolerance = 0.0001 angles = [0.0, math.pi / 2, math.pi, 3 * math.pi / 2] whichMetaFile = 0 for i in range(4): if RoughlyEqual(rotation, angles[i], tolerance): whichMetaFile = i break if whichMetaFile > 0 and not self._metafiles[whichMetaFile].IsValid(): whichMetaFile = 0 return whichMetaFile def OnDrawOutline(self, dc, x, y, w, h): if self._metafiles[self._currentAngle].GetOutlineOp() != -1: op = self._metafiles[self._currentAngle].GetOps()[self._metafiles[self._currentAngle].GetOutlineOp()] if op.OnDrawOutline(dc, x, y, w, h, self._width, self._height): return # Default... just use a rectangle RectangleShape.OnDrawOutline(self, dc, x, y, w, h) # Get the perimeter point using the special outline op, if there is one, # otherwise use default wxRectangleShape scheme def GetPerimeterPoint(self, x1, y1, x2, y2): if self._metafiles[self._currentAngle].GetOutlineOp() != -1: op = self._metafiles[self._currentAngle].GetOps()[self._metafiles[self._currentAngle].GetOutlineOp()] p = op.GetPerimeterPoint(x1, y1, x2, y2, self.GetX(), self.GetY(), self.GetAttachmentMode()) if p: return p return RectangleShape.GetPerimeterPoint(self, x1, y1, x2, y2) def LoadFromMetaFile(self, filename): """Load a (very simple) Windows metafile, created for example by Top Draw, the Windows shareware graphics package.""" return self._metafiles[0].LoadFromMetaFile(filename) # Set of functions for drawing into a pseudo metafile. # They use integers, but doubles are used internally for accuracy # when scaling. def DrawLine(self, pt1, pt2): self._metafiles[self._currentAngle].DrawLine(pt1, pt2) def DrawRectangle(self, rect): self._metafiles[self._currentAngle].DrawRectangle(rect) def DrawRoundedRectangle(self, rect, radius): """Draw a rounded rectangle. radius is the corner radius. If radius is negative, it expresses the radius as a proportion of the smallest dimension of the rectangle. """ self._metafiles[self._currentAngle].DrawRoundedRectangle(rect, radius) def DrawEllipse(self, rect): self._metafiles[self._currentAngle].DrawEllipse(rect) def DrawArc(self, centrePt, startPt, endPt): """Draw an arc.""" self._metafiles[self._currentAngle].DrawArc(centrePt, startPt, endPt) def DrawEllipticArc(self, rect, startAngle, endAngle): """Draw an elliptic arc.""" self._metafiles[self._currentAngle].DrawEllipticArc(rect, startAngle, endAngle) def DrawPoint(self, pt): self._metafiles[self._currentAngle].DrawPoint(pt) def DrawText(self, text, pt): self._metafiles[self._currentAngle].DrawText(text, pt) def DrawLines(self, pts): self._metafiles[self._currentAngle].DrawLines(pts) def DrawPolygon(self, pts, flags = 0): """Draw a polygon. flags can be one or more of: METAFLAGS_OUTLINE (use this polygon for the drag outline) and METAFLAGS_ATTACHMENTS (use the vertices of this polygon for attachments). """ if flags and METAFLAGS_ATTACHMENTS: self.ClearAttachments() for i in range(len(pts)): self._attachmentPoints.append(AttachmentPoint(i,pts[i][0],pts[i][1])) self._metafiles[self._currentAngle].DrawPolygon(pts, flags) def DrawSpline(self, pts): self._metafiles[self._currentAngle].DrawSpline(pts) def SetClippingRect(self, rect): """Set the clipping rectangle.""" self._metafiles[self._currentAngle].SetClippingRect(rect) def DestroyClippingRect(self): """Destroy the clipping rectangle.""" self._metafiles[self._currentAngle].DestroyClippingRect() def SetDrawnPen(self, pen, isOutline = False): """Set the pen for this metafile. If isOutline is True, this pen is taken to indicate the outline (and if the outline pen is changed for the whole shape, the pen will be replaced with the outline pen). """ self._metafiles[self._currentAngle].SetPen(pen, isOutline) def SetDrawnBrush(self, brush, isFill = False): """Set the brush for this metafile. If isFill is True, the brush is used as the fill brush. """ self._metafiles[self._currentAngle].SetBrush(brush, isFill) def SetDrawnFont(self, font): self._metafiles[self._currentAngle].SetFont(font) def SetDrawnTextColour(self, colour): """Set the current text colour for the current metafile.""" self._metafiles[self._currentAngle].SetTextColour(colour) def SetDrawnBackgroundColour(self, colour): """Set the current background colour for the current metafile.""" self._metafiles[self._currentAngle].SetBackgroundColour(colour) def SetDrawnBackgroundMode(self, mode): """Set the current background mode for the current metafile.""" self._metafiles[self._currentAngle].SetBackgroundMode(mode) def CalculateSize(self): """Calculate the wxDrawnShape size from the current metafile. Call this after you have drawn into the shape. """ self._metafiles[self._currentAngle].CalculateSize(self) def DrawAtAngle(self, angle): """Set the metafile for the given orientation, which can be one of: * DRAWN_ANGLE_0 * DRAWN_ANGLE_90 * DRAWN_ANGLE_180 * DRAWN_ANGLE_270 """ self._currentAngle = angle def GetAngle(self): """Return the current orientation, which can be one of: * DRAWN_ANGLE_0 * DRAWN_ANGLE_90 * DRAWN_ANGLE_180 * DRAWN_ANGLE_270 """ return self._currentAngle def GetRotation(self): """Return the current rotation of the shape in radians.""" return self._rotation def SetSaveToFile(self, save): """If save is True, the image will be saved along with the shape's other attributes. The reason why this might not be desirable is that if there are many shapes with the same image, it would be more efficient for the application to save one copy, and not duplicate the information for every shape. The default is True. """ self._saveToFile = save def GetMetaFile(self, which = 0): """Return a reference to the internal 'pseudo-metafile'.""" return self._metafiles[which]