roar/libgui/GuiCanvasWxBackend.py

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#!/usr/bin/env python3
#
# GuiCanvasWxBackend.py
# Copyright (c) 2018, 2019 Lucio Andrés Illanes Albornoz <lucio@lucioillanes.de>
#
from ctypes import *
from GuiCanvasColours import Colours
import math, os, wx
class GuiBufferedDC(wx.MemoryDC):
# {{{ __del__(self)
def __del__(self):
self.dc.Blit(0, 0, *self.viewSize, self, 0, 0)
self.SelectObject(wx.NullBitmap)
# }}}
# {{{ __init__(self, backend, buffer, clientSize, dc, viewRect)
def __init__(self, backend, buffer, clientSize, dc, viewRect):
super().__init__()
canvasSize = [a - b for a, b in zip(backend.canvasSize, viewRect)]
clientSize = [math.ceil(m / n) for m, n in zip(clientSize, backend.cellSize)]
viewRect = [m * n for m, n in zip(backend.cellSize, viewRect)]
viewSize = [min(m, n) for m, n in zip(canvasSize, clientSize)]
viewSize = [m * n for m, n in zip(backend.cellSize, viewSize)]
bitmap = wx.Bitmap(viewSize); self.SelectObject(bitmap);
bufferDc = wx.MemoryDC(); bufferDc.SelectObject(buffer);
self.Blit(0, 0, *viewSize, bufferDc, *viewRect)
bufferDc.SelectObject(wx.NullBitmap)
self.dc, self.viewSize = dc, viewSize
# }}}
class GuiCanvasWxBackend():
# {{{ _drawBrushPatch(self, eventDc, patch, point)
def _drawBrushPatch(self, eventDc, patch, point):
absPoint = self._xlatePoint(point)
brushBg, brushFg, pen = self._getBrushPatchColours(patch)
self._setBrushDc(brushBg, brushFg, eventDc, pen)
eventDc.DrawRectangle(*absPoint, *self.cellSize)
# }}}
# {{{ _drawCharPatch(self, eventDc, patch, point)
def _drawCharPatch(self, eventDc, patch, point):
absPoint, fontBitmap = self._xlatePoint(point), wx.Bitmap(*self.cellSize)
brushBg, brushFg, pen = self._getCharPatchColours(patch)
fontDc = wx.MemoryDC(); fontDc.SelectObject(fontBitmap);
fontDc.SetTextForeground(wx.Colour(Colours[patch[0]][:4]))
fontDc.SetTextBackground(wx.Colour(Colours[patch[1]][:4]))
fontDc.SetBrush(brushBg); fontDc.SetBackground(brushBg); fontDc.SetPen(pen);
fontDc.SetFont(self._font)
fontDc.DrawRectangle(0, 0, *self.cellSize); fontDc.DrawText(patch[3], 0, 0);
eventDc.Blit(*absPoint, *self.cellSize, fontDc, 0, 0)
# }}}
# {{{ _finiBrushesAndPens(self)
def _finiBrushesAndPens(self):
[brush.Destroy() for brush in self._brushes or []]
[pen.Destroy() for pen in self._pens or []]
self._brushes, self._lastBrushBg, self._lastBrushFg, self._lastPen, self._pens = None, None, None, None, None
# }}}
# {{{ _getBrushPatchColours(self, patch)
def _getBrushPatchColours(self, patch):
if (patch[0] != -1) and (patch[1] != -1):
brushBg, brushFg, pen = self._brushes[patch[0]], self._brushes[patch[1]], self._pens[patch[1]]
elif (patch[0] == -1) and (patch[1] == -1):
brushBg, brushFg, pen = self._brushes[1], self._brushes[1], self._pens[1]
elif patch[0] == -1:
brushBg, brushFg, pen = self._brushes[patch[1]], self._brushes[patch[1]], self._pens[patch[1]]
elif patch[1] == -1:
brushBg, brushFg, pen = self._brushes[1], self._brushes[patch[0]], self._pens[1]
return (brushBg, brushFg, pen)
# }}}
# {{{ _getCharPatchColours(self, patch)
def _getCharPatchColours(self, patch):
if (patch[0] != -1) and (patch[1] != -1):
brushBg, brushFg, pen = self._brushes[patch[1]], self._brushes[patch[0]], self._pens[patch[1]]
elif (patch[0] == -1) and (patch[1] == -1):
brushBg, brushFg, pen = self._brushes[1], self._brushes[1], self._pens[1]
elif patch[0] == -1:
brushBg, brushFg, pen = self._brushes[patch[1]], self._brushes[patch[1]], self._pens[patch[1]]
elif patch[1] == -1:
brushBg, brushFg, pen = self._brushes[1], self._brushes[patch[0]], self._pens[1]
return (brushBg, brushFg, pen)
# }}}
# {{{ _initBrushesAndPens(self)
def _initBrushesAndPens(self):
self._brushes, self._pens = [None for x in range(len(Colours))], [None for x in range(len(Colours))]
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for mircColour in range(len(Colours)):
self._brushes[mircColour] = wx.Brush(wx.Colour(Colours[mircColour][:4]), wx.BRUSHSTYLE_SOLID)
self._pens[mircColour] = wx.Pen(wx.Colour(Colours[mircColour][:4]), 1)
self._lastBrushBg, self._lastBrushFg, self._lastPen = None, None, None
# }}}
# {{{ _setBrushDc(self, brushBg, brushFg, dc, pen)
def _setBrushDc(self, brushBg, brushFg, dc, pen):
if self._lastBrushBg != brushBg:
dc.SetBackground(brushBg); self._lastBrushBg = brushBg;
if self._lastBrushFg != brushFg:
dc.SetBrush(brushFg); self._lastBrushFg = brushFg;
if self._lastPen != pen:
dc.SetPen(pen); self._lastPen = pen;
# }}}
# {{{ _xlatePoint(self, point)
def _xlatePoint(self, point):
return [a * b for a, b in zip(point, self.cellSize)]
# }}}
# {{{ drawCursorMaskWithJournal(self, canvasJournal, eventDc, viewRect)
def drawCursorMaskWithJournal(self, canvasJournal, eventDc, viewRect):
[self.drawPatch(eventDc, patch, viewRect) for patch in canvasJournal.popCursor()]
# }}}
# {{{ drawPatch(self, eventDc, patch, viewRect)
def drawPatch(self, eventDc, patch, viewRect):
point = [m - n for m, n in zip(patch[:2], viewRect)]
if [(c >= 0) and (c < s) for c, s in zip(point, self.canvasSize)] == [True, True]:
if patch[5] == " ":
self._drawBrushPatch(eventDc, patch[2:], point)
else:
self._drawCharPatch(eventDc, patch[2:], point)
return True
else:
return False
# }}}
# {{{ getDeviceContext(self, clientSize, parentWindow, viewRect)
def getDeviceContext(self, clientSize, parentWindow, viewRect):
if viewRect == (0, 0):
eventDc = wx.BufferedDC(wx.ClientDC(parentWindow), self.canvasBitmap)
else:
eventDc = GuiBufferedDC(self, self.canvasBitmap, clientSize, wx.ClientDC(parentWindow), viewRect)
self._lastBrushBg, self._lastBrushFg, self._lastPen = None, None, None
return eventDc
# }}}
# {{{ onPaint(self, clientSize, panelWindow, viewRect)
def onPaint(self, clientSize, panelWindow, viewRect):
if self.canvasBitmap != None:
if viewRect == (0, 0):
eventDc = wx.BufferedPaintDC(panelWindow, self.canvasBitmap)
else:
eventDc = GuiBufferedDC(self, self.canvasBitmap, clientSize, wx.PaintDC(panelWindow), viewRect)
# }}}
# {{{ resize(self, canvasSize, cellSize):
def resize(self, canvasSize, cellSize):
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winSize = [a * b for a, b in zip(canvasSize, cellSize)]
if self.canvasBitmap == None:
self.canvasBitmap = wx.Bitmap(winSize)
else:
oldDc = wx.MemoryDC(); oldDc.SelectObject(self.canvasBitmap);
newDc = wx.MemoryDC(); newBitmap = wx.Bitmap(winSize); newDc.SelectObject(newBitmap);
newDc.Blit(0, 0, *self.canvasBitmap.GetSize(), oldDc, 0, 0)
oldDc.SelectObject(wx.NullBitmap)
self.canvasBitmap.Destroy(); self.canvasBitmap = newBitmap;
self.canvasSize, self.cellSize = canvasSize, cellSize
self._font = wx.TheFontList.FindOrCreateFont(8, wx.FONTFAMILY_DEFAULT, wx.FONTSTYLE_NORMAL, wx.FONTWEIGHT_NORMAL, False, self.fontName)
# }}}
# {{{ xlateEventPoint(self, event, eventDc, viewRect)
def xlateEventPoint(self, event, eventDc, viewRect):
eventPoint = event.GetLogicalPosition(eventDc)
rectX, rectY = eventPoint.x - (eventPoint.x % self.cellSize[0]), eventPoint.y - (eventPoint.y % self.cellSize[1])
mapX, mapY = int(rectX / self.cellSize[0] if rectX else 0), int(rectY / self.cellSize[1] if rectY else 0)
return [m + n for m, n in zip((mapX, mapY), viewRect)]
# }}}
# {{{ __del__(self): destructor method
def __del__(self):
if self.canvasBitmap != None:
self.canvasBitmap.Destroy(); self.canvasBitmap = None;
self._finiBrushesAndPens()
# }}}
#
# __init__(self, canvasSize, cellSize, fontName="Dejavu Sans Mono", fontPathName=os.path.join("assets", "fonts", "DejaVuSansMono.ttf")): initialisation method
def __init__(self, canvasSize, cellSize, fontName="Dejavu Sans Mono", fontPathName=os.path.join("assets", "fonts", "DejaVuSansMono.ttf")):
self._brushes, self._font, self._lastBrush, self._lastPen, self._pens = None, None, None, None, None
self.canvasBitmap, self.cellSize, self.fontName, self.fontPathName = None, None, fontName, fontPathName
WinDLL("gdi32.dll").AddFontResourceW(self.fontPathName.encode("utf16"))
self._initBrushesAndPens(); self.resize(canvasSize, cellSize);
# vim:expandtab foldmethod=marker sw=4 ts=4 tw=120