0 12 11

ChangeLog

@@ -1,4 +1,12 @@
-2017-11-28 (0.12.10/11)
+2017-11-28 (0.12.11)
+	Fix img.save(dat) to build correct indexes
+	Fix ESCm implementation bug
+	Implements ESC<n ESC>n back screen handlers
+
+2017-11-28 (0.12.10)
+	Released 82f865d61a6eba1c017b8a58e1c892f1b7d6a0c0
+
+2017-11-28 (0.12.10)
 	COMMON: owner strings
 
 2017-11-28 (0.12.10)

configure.ac

@@ -7,7 +7,7 @@ dnl This program is distributed under the terms of the GPL v2.0
 dnl Download the GNU Public License (GPL) from www.gnu.org
 dnl
 
-AC_INIT([smallbasic], [0.12.10])
+AC_INIT([smallbasic], [0.12.11])
 AC_CONFIG_SRCDIR([configure.ac])
 
 AC_CANONICAL_TARGET

debian/changelog

@@ -1,3 +1,8 @@
+smallbasic (0.12.11) unstable; urgency=low
+  * Various see web site
+
+ -- Chris Warren-Smith <cwarrensmith@gmail.com>  Wed, 27 Dec 2017 09:45:25 +1000
+
 smallbasic (0.12.10) unstable; urgency=low
   * Various see web site
 

ide/android/AndroidManifest.xml

@@ -2,8 +2,8 @@
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
           package="net.sourceforge.smallbasic"
           android:installLocation="preferExternal"
-          android:versionCode="25"
-          android:versionName="0.12.10">
+          android:versionCode="26"
+          android:versionName="0.12.11">
   <uses-sdk android:minSdkVersion="15"/>
 
   <!-- support large + xlarge screens to avoid compatibility mode -->

samples/distro-examples/graphics/img2ascii.bas

@@ -0,0 +1,157 @@
+#http://mattmik.com/articles/ascii/ascii.html
+const chars = "~`!@#$%^&*()+-=[]\;',./_+{}|:"
+const block_width = 4
+const block_height = 6
+
+func calc_block(byref dat, h, y2, w, x2)
+  local y,x,c,r,g,b,n
+
+  n = 0
+  for y = 0 to h
+    for x = 0 to w
+      c = -dat[y2 + y, x2 + x]
+      r = ((c band 0xff0000) rshift 16)
+      g = ((c band 0xff00) rshift 8)
+      b = (c band 0xff)
+      n += (r + g + b) / 3
+    next x
+  next y
+  return n
+end
+
+func calc_color(byref dat, h, y2, w, x2)
+  local y,x,c
+  local r = 0
+  local g = 0
+  local b = 0
+  local wh = w * h
+
+  for y = 0 to h
+    for x = 0 to w
+      c = -dat[y2 + y, x2 + x]
+      rx = ((c band 0xff0000) rshift 16)
+      gx = ((c band 0xff00) rshift 8)
+      bx= (c band 0xff)
+
+      r += ((c band 0xff0000) rshift 16)
+      g += ((c band 0xff00) rshift 8)
+      b += (c band 0xff)
+    next x
+  next y
+
+  r = r / wh
+  g = g / wh
+  b = b / wh
+
+  local minv = min(r,g,b)
+  local maxv = max(r,g,b)
+
+  if (minv < maxv) then
+    local diff = iff(maxv - minv == 0, 1, maxv - minv)
+    r = int(255 * (r - minv) / diff)
+    g = int(255 * (g - minv) / diff)
+    b = int(255 * (b - minv) / diff)
+    return rgb(r,g,b)
+  else
+    r = min(255, r)
+    return rgb(r,r,r) 
+  endif
+
+end
+
+func get_char(byref tbl, n)
+  local r = tbl[n]
+  if r > 0 then return r
+  for sn in tbl.sorted
+    if (sn > n) then
+      ' round up to the nearest value
+      tbl[n] = tbl[sn]
+      return tbl[sn]
+    endif
+  next n
+  return " "
+end
+
+# analyze the graphic data corresponding to each character in the character set.
+func create_table
+  local img,dat,i,ch,x2,n
+  local w = txtw(chars)
+  local h = txth(chars)
+  local cw = txtw("1")
+
+  cls: print chars
+  img = image(0, 0, w, h, 1)
+  img.save(dat)
+  cls: showpage
+
+  local vals = []
+  local minv = maxint
+  local maxv = 0
+
+  for i = 1 to len(chars)
+    ch = mid(chars, i, 1)
+    x2 = ((i - 1) * cw)
+    n = calc_block(dat, h - 1, 0, cw - 1, x2) / (w * h)
+    minv = min(minv, n)
+    maxv = max(maxv, n)
+    vals << n
+  next i
+
+  ' scale the values from 0:255
+  local tbl = {}
+  for i = 1 to len(chars)
+    ch = mid(chars, i, 1)
+    diff = iff(maxv - minv == 0, 1, maxv - minv)
+    n = 255 * (vals[i - 1] - minv) / diff
+    vals[i - 1] = n
+    tbl[n] = ch
+  next i
+
+  sort vals
+  tbl["sorted"] = vals
+  return tbl
+end
+
+sub imageToAscii(path)
+  local img,dat,pic,bly,blx,y2,x2,n,minv,maxv,row
+  local tbl = create_table()
+
+  img = image(path)
+  img.save(dat)
+
+  local w = img.width
+  local h = img.height
+  local blw = w / block_width
+  local blh = h / block_height
+  local vals = []
+  local minv = maxint
+  local maxv = 0
+
+  dim pic(blh, blw)
+
+  for bly = 0 to blh - 1
+    for blx = 0 to blw - 1
+      y2 = bly * block_height
+      x2 = blx * block_width
+      n = calc_block(dat, block_height, y2, block_width - 1, x2) / (w * h)
+      minv = min(minv, n)
+      maxv = max(maxv, n)
+      pic[bly,blx] = n 
+    next blx
+  next bly
+
+  for bly = 0 to blh - 1
+    for blx = 0 to blw - 1
+      diff = iff(maxv - minv == 0, 1, maxv - minv)
+      n = 255 * (pic[bly, blx] - minv) / diff
+      y2 = iff(bly==0,1,bly) * block_height
+      x2 = iff(blx==0,1,blx) * block_width
+      color calc_color(dat, block_height, y2, block_width - 1, x2)
+      print get_char(tbl, n);
+    next blx
+    print
+  next bly
+  showpage
+end
+
+imageToAscii("tree.png")

src/ui/ansiwidget.cpp

@@ -203,7 +203,7 @@ void AnsiWidget::print(const char *str) {
       case '\003': // end of text
         flush(true);
         break;
-      case '\xC':
+      case '\xC':  // form feed
         clearScreen();
         break;
       case '\033': // ESC ctrl chars
@@ -218,9 +218,6 @@ void AnsiWidget::print(const char *str) {
       case '\r':   // return
         _back->_curX = INITXY;     // erasing the line will clear any previous text
         break;
-      case 'm':    // scroll to the top (M = scroll up one line)
-        _back->_scrollY = 0;
-        break;
       default:
         p += _back->print(p, lineHeight) - 1; // allow for p++
         break;
@@ -658,11 +655,46 @@ bool AnsiWidget::drawHoverLink(MAEvent &event) {
 
 // print() helper
 void AnsiWidget::handleEscape(const char *&p, int lineHeight) {
-  if (*(p + 1) == '[') {
+  switch (*(p + 1)) {
+  case '[':
     p += 2;
     while (doEscape(p, lineHeight)) {
       // continue
     }
+    break;
+  case 'm':
+    // scroll to the top (M = scroll up one line)
+    p += 2;
+    _back->_scrollY = 0;
+    break;
+  case '<':
+    // select back screen
+    switch (*(p + 2)) {
+    case '1':
+      p += 3;
+      selectBackScreen(USER_SCREEN1);
+      break;
+    case '2':
+      p += 3;
+      selectBackScreen(USER_SCREEN2);
+      break;
+    }
+    break;
+  case '>':
+    // select front screen
+    switch (*(p + 2)) {
+    case '1':
+      p += 3;
+      selectFrontScreen(USER_SCREEN1);
+      break;
+    case '2':
+      p += 3;
+      selectFrontScreen(USER_SCREEN2);
+      break;
+    }
+    break;
+  default:
+    break;
   }
 }
 

src/ui/image.cpp

@@ -391,7 +391,7 @@ void cmd_image_save(var_s *self) {
         saved = true;
       }
     } else if (array != NULL) {
-      v_tomatrix(array, w, h);
+      v_tomatrix(array, h, w);
       for (int y = 0; y < h; y++) {
         int yoffs = (4 * y * w);
         for (int x = 0; x < w; x++) {