CLASS CanvasRectangleText (Defined in: jpgraph_canvtools.php : 375)

CanvasRectangleText

CanvasRectangleText()
ParagraphAlign()
Pos()
Set()
SetAutoMargin()
SetColor()
SetCornerRadius()
SetFillColor()
SetFont()
SetFontColor()
SetPos()
SetShadow()
SetTxt()
Stroke()

Class usage and Overview
YOu can use this class to convieniently draw a text on canvas. The text may have multiple lines wher each line is separated by a "\n" (newline) character.

The text may also be enclosed in a rounded (possibly filled) rectangle.

See also related classes:
CanvasGraph and CanvasScale

Class Methods

function CanvasRectangleText($aTxt,$xl,$yt,$w,$h)
Draws a text paragraph inside a rounded, possibly filled, rectangle

Argument | Default | Description
--- | --- | ---
$aTxt | '' | Text
$xl | 0 | Top left X
$yt | 0 | Top left Y
$w | 0 | Width
$h | 0 | Height

Description
Draws a text paragraph inside a rounded, possible filled, rectangle.

Example

$t = new CanvasRectangleText();
$t->SetFillColor('lightgreen');
$t->SetFontColor('navy');
$t->SetFont(FF_ARIAL,FS_NORMAL,16);
$t->Set("\n\n\n\n\n\n\n\n\n\n\nTTF Fonts",0.5,19,26,32);
$t->Stroke($g->img,$scale);

function ParagraphAlign($aParaAlign)
Specify paragraph alignment for the text

Argument | Default | Description
--- | --- | ---
$aParaAlign |  | Alignment

Description
Specify paragraph alignment for the text. Alignments can be:

- "left"
- "center"
- "right"

Example

$g = new CanvasGraph(550,450);
$scale = new CanvasScale($g);
$scale->Set(0,27,0,53);
//
$t = new CanvasRectangleText();
$t->SetFillColor('lightgreen');
$t->SetFontColor('navy');
$t->SetFont(FF_ARIAL,FS_NORMAL,16);
$t->ParagraphAlign('center');
$t->Set("First line\nSecond line",0.5,19,26,32);
$t->Stroke($g->img,$scale);

function Pos($xl,$yt,$w,$h)
Specify position for text

Argument | Default | Description
--- | --- | ---
$xl | 0 | Top left X
$yt | 0 | Top left Y
$w | 0 | Width
$h | 0 | Height

Description
Set position for text. All coordinates will be translaed according to the current scale used.

function Set($aTxt,$xl,$yt,$w,$h)
Specify the text and position

Argument | Default | Description
--- | --- | ---
$aTxt |  | Text
$xl |  | Top left X
$yt |  | Top left Y
$w | 0 | Width
$h | 0 | Height

Description
Specify the text and position. All coordinates will be translated using the specified scale when stroked.

Example

$t->SetShadow('');
$t->SetFont(FF_ARIAL,FS_BOLD,18);
$t->Set('Family',1,1,8);
$t->Stroke($g->img,$scale);

function SetAutoMargin($aMargin)
Specify auto margin when no specific size is specified

Argument | Default | Description
--- | --- | ---
$aMargin |  | Margin in pixels

Description
Specify auto margin when no specific size is specified. This margin is used to add extra space around the text and the border around the text.

function SetColor($aColor)
Set border color for rectangle

Argument | Default | Description
--- | --- | ---
$aColor |  | Border color

Description
Set border color for rectangle
See also
CanvasRectangleText::SetFontColor and CanvasRectangleText::SetFillColor

Example

$t->SetColor('navy');

function SetCornerRadius($aRad)
Set radius for corners

Argument | Default | Description
--- | --- | ---
$aRad | 5 | Radius in pixels

Description
Specify the radius for the rounded corners. Specifying the value as 0 will give normal square corners.

Example

$t->SetCornerRadius(15);

function SetFillColor($aFillColor)
Specify fill color for rectangle

Argument | Default | Description
--- | --- | ---
$aFillColor |  | Color

Description
Specify fill color for rectangle

Example

$t->SetFillColor('#12A73C');

function SetFont($FontFam,$aFontStyle,$aFontSize)
Specify font

Argument | Default | Description
--- | --- | ---
$FontFam |  | Font family
$aFontStyle |  | Font style
$aFontSize | 12 | Font size

Description
Specify font

Example

$t->SetFont(FF_ARIAL,FS_BOLD,24);

function SetFontColor($aColor)
Specify text (font) color

Argument | Default | Description
--- | --- | ---
$aColor |  | Color specification

Description
Set color for text. Use SetColor() to specify border colro and SetFillColor() to set fill color.
See also
CanvasRectangleText::SetColor and CanvasRectangleText::SetFillColor

Example

$t->SetFontCOlor('black')

function SetPos($xl,$yt,$w,$h)
Specify position

Argument | Default | Description
--- | --- | ---
$xl | 0 | Top left X
$yt | 0 | Top left Y
$w | 0 | Width
$h | 0 | Height

Description
Specify position. All coordinates will be transalted with the specified scale when stroked.

function SetShadow($aColor,$aWidth)
Add a drop shadow

Argument | Default | Description
--- | --- | ---
$aColor | 'gray' | Color of shadow
$aWidth | 3 | Width of shadow

Description
Add a drop shadow to the rounded reactangle surranding the text

Example

$t->SetShadow(); // Use default values

function SetTxt($aTxt)
Specify text string

Argument | Default | Description
--- | --- | ---
$aTxt |  | Textt

Description
Set text string to be displayed. The text string may have multiple lines separated by a newline character "\n"

Example

$t->Set("This is a text!");

function Stroke($aImg,$scale)
Stroke text to canvas

Argument | Default | Description
--- | --- | ---
$aImg |  | Image context
$scale |  | Scale

Description
Stroke text to canvas
See also
CanvasScale::CanvasScale

Example

$t->Stroke($graph->img,$scale);