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

["Tomasz Janeczko" <groups@xxxxxxxxxxxxx>]

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@xxxxxxxxxxxxxxx

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@xxxxxxxxxxxxxxx [mailto:amibroker@xxxxxxxxxxxxxxx] On Behalf Of Tomasz Janeczko
Sent: Wednesday, April 30, 2008 8:32 AM
To: amibroker@xxxxxxxxxxxxxxx
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)

• MDI Tab order is now saved in the layout
• 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
• 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();

 

• 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

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