Re: [amibroker] AmiBroker 5.09.0 BETA released [. New fields in Status() function: pxchart* Chart coordinates! ]

[Tomasz Janeczko]

Hello,

1. No,  all GFX commands go to the "drawing list" (actually metafile) that is 
then executed (played back) on final rendering device (i.e. usually window, but 
can be also printer)
either BEFORE or AFTER normal "plot" commands depending on overlay mode. If 
more than one GfxSetOverlayMode is used, then the value set by last call counts.

2. See the code sample published on the KB that does exactly that:
http://www.amibroker.com/kb/2008/04/21/big-symbol-text-in-the-background/

Best regards,
Tomasz Janeczko
amibroker.com
  ----- Original Message ----- 
  From: J. Biran 
  To: amibroker@yahoogroups.com 
  Sent: Thursday, May 01, 2008 12:58 AM
  Subject: RE: [amibroker] AmiBroker 5.09.0 BETA released [. New fields in 
Status() function: pxchart* Chart coordinates! ]


  Hi, 

   

  This is REAL NEAT addition!.

   

  Two questions: 

   

  1)

  in the samples below there is multiple usage of the command 
GfxSetOverlayMode(); 

   

  Can several of these be interleaved within the code and as a result the Gfx() 
following these will be plotted some on op others underneath (transparent) for 
individual sections? (I don't seem to get it to work)

   

  2)

  If you select text pointsize X, how do you compensate its vertical position 
to line up its center height with a value Y, independent of chart size?

   

  Joseph Biran
  ____________________________________________

   

  From: amibroker@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of Tomasz 
Janeczko
  Sent: Wednesday, April 30, 2008 8:32 AM
  To: amibroker@yahoogroups.com
  Subject: [amibroker] AmiBroker 5.09.0 BETA released [. New fields in Status() 
function: pxchart* Chart coordinates! ]

   

  Hello,

   

  AmiBroker 5.09.0 BETA released

  http://www.amibroker.com/devlog/2008/04/30/amibroker-5090-beta-released/

   

  CHANGES FOR VERSION 5.09.0 (as compared to 5.08.0)

    a.. MDI Tab order is now saved in the layout 
    b.. Added interface to BugsLayerUtil.dll for optional call stack / symbol 
dump report in crash recovery window
    Now there is a detailed call stack and CPU register state in the bottom of 
the crash report. This should allow quicker/easier fixes of any crashes 
    c.. New fields in Status() function: pxchart* 

    Status("pxchartleft") - returns x-coordinate of top-left corner of chart 
area
    Status("pxcharttop") - returns y-coordinate of top-left corner of chart area
    Status("pxchartright") - returns x-coordinate of bottom-right corner of 
chart area
    Status("pxchartbottom") - returns y-coordinate of bottom-right corner of 
chart area
    Status("pxchartwidth") - returns width chart area (right-left)
    Status("pxchartheight") - returns width chart area (bottom-top)
    Chart co-ordinates are useful because they automatically take into account 
selected axis font size, whether date axis is on or off
    and other settings (New Look chart style)
    All co-ordinates are in screen pixels. Note that top, left coordinates may 
not be zero as chart rectangle is smaller than underlying window because there 
is an extra space (padding) around chart. 

  // Test code:
  Title = StrFormat("left=%g, top=%g, right=%g, bottom=%g, width=%g, 
height=%g", 
  left=Status("pxchartleft"), 
  top=Status("pxcharttop"), 
  right=Status("pxchartright"), 
  bottom=Status("pxchartbottom"), 
  Status("pxchartwidth"), 
  Status("pxchartheight") ); 
  GfxSetOverlayMode(1); 
  GfxRectangle(Left,top, right, bottom);

  ============ Overlay sample ================
  _SECTION_BEGIN("GfxOverlaySampleNew"); 

  function GetVisibleBarCount() 
  { 
   lvb = Status("lastvisiblebar"); 
   fvb = Status("firstvisiblebar"); 

   return Min( Lvb - fvb, BarCount - fvb ); 
  } 

  function GfxConvertBarToPixelX( bar ) 
  { 
   lvb = Status("lastvisiblebar"); 
   fvb = Status("firstvisiblebar"); 
   pxchartleft = Status("pxchartleft"); 
   pxchartwidth = Status("pxchartwidth"); 

   return pxchartleft + bar  * pxchartwidth / ( Lvb - fvb + 1 ); 
  } 

  function GfxConvertValueToPixelY( Value ) 
  { 
   local Miny, Maxy, pxchartbottom, pxchartheight; 

   Miny = Status("axisminy"); 
   Maxy = Status("axismaxy"); 

   pxchartbottom = Status("pxchartbottom"); 
   pxchartheight = Status("pxchartheight"); 

   return pxchartbottom - floor( 0.5 + ( Value - Miny ) * pxchartheight/ ( Maxy 
- Miny ) ); 
  } 



  Plot(C, "Price", colorBlack, styleHistogram ); 

  GfxSetOverlayMode(0); 
  GfxSelectSolidBrush( colorRed ); 
  GfxSelectPen( colorRed ); 

  AllVisibleBars = GetVisibleBarCount(); 
  fvb = Status("firstvisiblebar"); 

  for( i = 0; i < AllVisibleBars ; i++ ) 
  { 
     x = GfxConvertBarToPixelX( i ); 
     y = GfxConvertValueToPixelY( C[ i + fvb ] ); 

    GfxRectangle( x-1, y-1, x + 2, y+1 ); 
  } 

  //SetChartBkGradientFill( ColorRGB(200,200,200), ColorRGB( 255,255,255) ); 
  _SECTION_END();

   

    a.. OLE: Name property is now writable, allowing switchin currently 
selected symbol for the document

    Example (JScript):
    AB = new ActiveXObject("Broker.Application");
    AB.ActiveDocument.Name = "MSFT"; // change the symbol for current document 
to "MSFT" 

  Best regards,
  Tomasz Janeczko
  amibroker.com