GetTextWidth Method (GdPictureImaging)

In This Topic

Calculate the width of the specified text, based on the specified font, font size and font style. The result is measured in units specified by the FontSetUnit() method.

Syntax

Visual Basic
C#
Delphi
JScript
Managed Extensions for C++
C++/CLI

'Declaration

 

Public Function GetTextWidth( _

   ByVal ImageID As Integer, _

   ByVal Text As String, _

   ByVal FontName As String, _

   ByVal FontSize As Single, _

   ByVal FontStyle As GdPictureFontStyle _

) As Single

public float GetTextWidth( 

   int ImageID,

   string Text,

   string FontName,

   float FontSize,

   GdPictureFontStyle FontStyle

)

public function GetTextWidth( 

    ImageID: Integer;

    Text: String;

    FontName: String;

    FontSize: Single;

    FontStyle: GdPictureFontStyle

): Single;

public function GetTextWidth( 

   ImageID : int,

   Text : String,

   FontName : String,

   FontSize : float,

   FontStyle : GdPictureFontStyle

) : float;

public: float GetTextWidth( 

   int ImageID,

   string* Text,

   string* FontName,

   float FontSize,

   GdPictureFontStyle FontStyle

)

public:

float GetTextWidth( 

   int ImageID,

   String^ Text,

   String^ FontName,

   float FontSize,

   GdPictureFontStyle FontStyle

)

Parameters

ImageID: GdPicture image identifier.
Text: Text to draw.
FontName: The name of the font. IE: "Arial".
FontSize: The font size in units specified by the FontSetUnit() method.
FontStyle: A member of the FontStyle enumeration.

Return Value

The width of the text measured in units specified by the FontSetUnit() method.

Remarks

This method requires the Image Documents component to run.

Example

Drawing the red text and the black text border based on the text width and height on jpeg image.

using (GdPictureImaging gdpictureImaging = new GdPictureImaging())

{

    int imageID = gdpictureImaging.CreateGdPictureImageFromFile("input.jpg");

    string text = "GdPicture.PDF";

    

    // Set font unit to Pixel

    gdpictureImaging.FontSetUnit(UnitMode.UnitPixel);

    

    float width = gdpictureImaging.GetTextWidth(imageID, text, "Arial", 24, GdPicture14.FontStyle.FontStyleRegular);

    float height = gdpictureImaging.GetTextHeight(imageID, text, "Arial", 24, GdPicture14.FontStyle.FontStyleRegular);

 

    // Draw the text.

    gdpictureImaging.DrawText(imageID, text, 10, 10, 24, GdPicture14.FontStyle.FontStyleRegular, Color.Red, "Arial", true);

 

    // Draw the border rectangle.

    gdpictureImaging.DrawRectangle(imageID, 10, 10, (int)width, (int)height, 1, Color.Black, true);

 

    gdpictureImaging.SaveAsJPEG(imageID, "output.jpg");

    gdpictureImaging.ReleaseGdPictureImage(imageID);

}

Example

Drawing the red text and the black text border based on the text width and height on jpeg image. using (GdPictureImaging gdpictureImaging = new GdPictureImaging()) { int imageID = gdpictureImaging.CreateGdPictureImageFromFile("input.jpg"); string text = "GdPicture.PDF"; // Set font unit to Pixel gdpictureImaging.FontSetUnit(UnitMode.UnitPixel); float width = gdpictureImaging.GetTextWidth(imageID, text, "Arial", 24, GdPicture14.FontStyle.FontStyleRegular); float height = gdpictureImaging.GetTextHeight(imageID, text, "Arial", 24, GdPicture14.FontStyle.FontStyleRegular); // Draw the text. gdpictureImaging.DrawText(imageID, text, 10, 10, 24, GdPicture14.FontStyle.FontStyleRegular, Color.Red, "Arial", true); // Draw the border rectangle. gdpictureImaging.DrawRectangle(imageID, 10, 10, (int)width, (int)height, 1, Color.Black, true); gdpictureImaging.SaveAsJPEG(imageID, "output.jpg"); gdpictureImaging.ReleaseGdPictureImage(imageID); }

Reference

GdPictureImaging Class
GdPictureImaging Members
FontSetUnit Method
FontGetUnit Method