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This object places a clock on the screen. It has construction arguments only.
Object Creation: The roClockWidget object is created with several parameters.
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CreateObject("roClockWidget", rect As roRectangle, res As roResourceManager, display_type As Integer) |
rect
: The rectangle in which the clock is displayed. The widget picks a font based on the size of the rectangle.res
: A resources.txt file that allows localization via the roResourceManager object (see below for further details).display_type
: Use 0 for date only, and 1 for clock only. To show both on the screen, you need to create two widgets.
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Example
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title | Example |
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rect=CreateObject("roRectangle", 0, 0, 300, 60)
res=CreateObject("roResourceManager", "resources.txt")
c=CreateObject("roClockWidget", rect, res, 1)
c.Show() |
The resource manager is passed into the widget, which uses the following resources within the resources.txt file to display the time and date correctly. Here are the "eng" entries:
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[CLOCK_DATE_FORMAT]
eng "%A, %B %e, %Y"
[CLOCK_TIME_FORMAT]
eng "%l:%M"
[CLOCK_TIME_AM]
eng "AM"
[CLOCK_TIME_PM]
eng "PM"
[CLOCK_DATE_SHORT_MONTH]
eng "Jan|Feb|Mar|Apr|May|Jun|Jul|Aug|Sep|Oct|Nov|Dec"
[CLOCK_DATE_LONG_MONTH]
eng
"January|February|March|April|May|June|July|August|September|October|November|December"
[CLOCK_DATE_SHORT_DAY]
eng "Sun|Mon|Tue|Wed|Thu|Fri|Sat"
[CLOCK_DATE_LONG_DAY]
eng "Sunday|Monday|Tuesday|Wednesday|Thursday|Friday|Saturday" |
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Control Characters
The following are the control characters for the date/time format strings:
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// Date format
//
// %a Abbreviated weekday name
// %A Long weekday name
// %b Abbreviated month name
// %B Full month name
// %d Day of the month as decimal 01 to 31
// %e Like %d, the day of the month as a decimal number, but without leading zero
// %m Month name as a decimal 01 to 12
// %n Like %m, the month as a decimal number, but without leading zero
// %y Two digit year
// %Y Four digit year
// Time format
//
// %H The hour using 24-hour clock (00 to 23)
// %I The hour using 12-hour clock (01 to 12)
// %k The hour using 24-hour clock (0 to 23); single digits are preceded by a blank.
// %l The hour using 12-hour clock (1 to 12); single digits are preceded by a blank.
// %M Minutes (00 to 59)
// %S Seconds (00 to 59) |
ifWidget
SetForegroundColor(color As Integer) As Boolean
Sets the foreground color in ARGB format. Hex color values should be converted to integers before being passed to this method (e.g. the value &hFFFFFFFF
should be passed as 4294967295). You can use the HexToInteger()
method (available in the core library extension) to convert a hex string to an integer.
SetBackgroundColor(color As Integer) As Boolean
Sets the background color in ARGB format. Hex color values should be converted to integers before being passed to this method (e.g. the value &hFFFFFFFF
should be passed as 4294967295). You can use the HexToInteger()
method (available in the core library extension) to convert a hex string to an integer.
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The top 8 bits of the SetForegroundColor()
and SetBGackgroundColor()
values are "alpha" parameters. Zero is equivalent to fully transparent and 255 to fully non-transparent. This feature allows for effects similar to subtitles. For example, you can create a semi-transparent black box containing text over video.
SetFont(font_filename As String) As Boolean
Sets the font_filename using a TrueType font (for example, SD:/Arial.ttf
).
SetBackgroundBitmap(bitmap_filename As String, stretch As Boolean) As Boolean
Sets the background bitmap image. If stretch is True, then the image is stretched to the size of the window.
SetBackgroundBitmap(parameters As roAssociativeArray, stretch As Boolean) As Boolean
Sets the background bitmap image. If stretch is True, then the image is stretched to the size of the window. The associative array can contain the following parameters:
Filename
: The name of the image fileEncryptionAlgorithm
: The file-encryption algorithm. Currently the options are "AesCtr" and "AesCtrHmac".EncryptionKey
: The key to decrypt the image file. This is a byte array consisting of 128 bits of key, followed by 128 bits of IV.
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See the Image Decryption section in the roImagePlayer entry for details on displaying encrypted images.
SetSafeTextRegion(region As roRectangle) As Boolean
Specifies the rectangle within the widget where the text can be drawn safely.
Show() As Boolean
Displays the widget. After creation, the widget is hidden
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until Show()
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is called.
Hide() As Boolean
Hides the widget.
Raise() As Void
Sends the widget to the top of the z-order on the graphics plane (i.e. in front of all other surfaces that implement the ifWidget interface). By default, new widgets are placed at the top of the graphics z-order.
Some surfaces are always drawn at the top of the graphics z-order, including the mouse cursor, closed captions, and scrolling tickers.
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Tip You can use the |
Lower() As Void
Sends the widget to the bottom of the z-order on the graphics plane (i.e. behind all other surfaces that implement the ifWidget interface). By default, new widgets are placed at the top of the graphics z-order.
GetFailureReason() As String
Yields additional useful information if a function return indicates an error.
SetRectangle(r As roRectangle) As Boolean
Changes the size and positioning of the widget rectangle using the passed roRectangle object.
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