From a50a07c4920047f5bf55154bc70fb236b16ef20c Mon Sep 17 00:00:00 2001
From: Eugenio Parodi <ceccopierangiolieugenio@googlemail.com>
Date: Sat, 9 Sep 2023 19:01:06 +0100
Subject: [PATCH] Added fast canvas copy

---
 TermTk/TTkCore/canvas.py | 58 ++++++++++++++++++++++++++++++++++++++++
 1 file changed, 58 insertions(+)

diff --git a/TermTk/TTkCore/canvas.py b/TermTk/TTkCore/canvas.py
index 666616b4..b91cb177 100644
--- a/TermTk/TTkCore/canvas.py
+++ b/TermTk/TTkCore/canvas.py
@@ -638,6 +638,14 @@ class TTkCanvas:
         if bx+bw<0 or by+bh<0 or bx>=cw or by>=ch: return
         if x+w<=bx or y+h<=by or bx+bw<=x or by+bh<=y: return
 
+        if (0,0,cw,ch)==geom==bound and (cw,ch)==canvas.size():
+            # fast Copy
+            # the canvas match exactly on top of the current one
+            for y in range(h):
+                self._data[y]   = canvas._data[y].copy()
+                self._colors[y] = canvas._colors[y].copy()
+            return
+
         x = min(x,cw-1)
         y = min(y,ch-1)
         w = min(w,cw-x)
@@ -747,6 +755,56 @@ class TTkCanvas:
                 empty=True
         # Reset the color at the end
         TTkTerm.push(TTkColor.RST)
+        # TTkTerm.flush()
         # Switch the buffer
         self._bufferedData, self._bufferedColors = data, colors
         self._data,         self._colors         = oldData, oldColors
+
+    def pushToTerminalBufferedOld(self, x, y, w, h):
+        # TTkLog.debug("pushToTerminal")
+        data, colors = self._data, self._colors
+        oldData, oldColors = self._bufferedData, self._bufferedColors
+        lastcolor = TTkColor.RST
+        empty = True
+        ansi = ""
+        for y,(lda,ldb,lca,lcb) in enumerate(zip(data,oldData,colors,oldColors)):
+            count = 0
+            chBk = ''
+            for x,(da,db,ca,cb) in enumerate(zip(lda,ldb,lca,lcb)):
+                if da==db and ca==cb:
+                    if not empty:
+                        ansi += "" if not chBk else chBk*count if count<=4 else f"{chBk}\033[{count-1}b"
+                        TTkTerm.push(ansi)
+                        count = 0
+                        chBk = ''
+                        empty=True
+                    continue
+                ch = da
+                color = ca
+                if empty:
+                    ansi = ("" if not chBk else chBk*count if count<=4 else f"{chBk}\033[{count-1}b") + TTkTerm.Cursor.moveTo(y+1,x+1)
+                    empty = False
+                    count = 0
+                    chBk = ''
+                if color != lastcolor:
+                    ansi += ("" if not chBk else chBk*count if count<=4 else f"{chBk}\033[{count-1}b") + str(color-lastcolor)
+                    lastcolor = color
+                    count = 0
+                    chBk = ''
+                # "Collect the consecutive characters"
+                if ch == chBk:
+                    count+=1
+                else:
+                    ansi += "" if not chBk else chBk*count if count<=4 else f"{chBk}\033[{count-1}b"
+                    chBk = ch
+                    count=1
+                # ansi+=ch
+            if not empty:
+                ansi += "" if not chBk else chBk*count if count<=4 else f"{chBk}\033[{count-1}b"
+                TTkTerm.push(ansi)
+                empty=True
+        # Reset the color at the end
+        TTkTerm.push(TTkColor.RST)
+        # Switch the buffer
+        self._bufferedData, self._bufferedColors = data, colors
+        self._data,         self._colors         = oldData, oldColors
\ No newline at end of file