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- TABLE OF CONTENTS
-
- button_gc/--datasheet--
- button_gc/BUTTON_GetClass
- button_gc/--datasheet-- button_gc/--datasheet--
-
- NAME
- button_gc -- create button BOOPSI objects
-
- SUPERCLASS
- gadgetclass
-
- REQUIRES
- bevel.image, glyph.image
-
- DESCRIPTION
- The button gadget class is used to create action buttons that are
- momentary, toggle and sticky. This class also supports relativity
- and placement within the window border.
-
- Advantages that this class provides:
-
- > Centered images.
-
- > Centered pen-sensitive glyphs.
-
- > Multi-frame images animation ability (NEW V42)
-
- > Ability to change the text and background colors for normal
- and selected buttons.
-
- > Supports window relativity.
-
- > Supports OS 3.0 BOOPSI Gadget HelpTest.
-
- METHODS
- OM_NEW -- Passed to superclass, defaults set, then OM_SET.
-
- OM_SET -- Passed to superclass, custom tags set.
-
- OM_GET -- Custom tag returned or passed to superclass.
-
- OM_UPDATE -- Passed to superclass, options set then rendered.
-
- OM_NOTIFY -- Tag set then passed to superclass.
-
- OM_DISPOSE -- MemPool memory freed, then Passed to superclass.
-
- GM_RENDER -- Passed to superclass, then button is rendered.
-
- GM_HITTEST -- Overrides supperclass, returns GMR_HITTEST.
-
- GM_GOACTIVE -- Passed to superclass, button activated.
-
- GM_HANDLEINPUT -- Overrides supperclass, all input processed.
-
- GM_GOINACTIVE -- Passed to superclass, button deactivated.
-
- GM_DOMAIN -- Returns GDOMAIN_MINIMUM and GDOMAIN_MAXIMUM dimensions.
-
- GM_KEYACTIVE -- Private method for keyboard control.
-
- GM_KEYINACTIVE -- Private method for keyboard control.
-
- ATTRIBUTES
-
- GA_ID (WORD)
-
- Applicability is (OM_NEW, OM_SET, OM_UPDATE, OM_GET, OM_NOTIFY)
-
- GA_Selected (BOOL)
- Determines whether the button is selected or not.
- Changing selection state will invoke GM_RENDER.
-
- Defaults to FALSE.
-
- Applicability is (OM_NEW, OM_SET, OM_GET, OM_NOTIFY)
-
- GA_Disabled (BOOL)
- Determines whether the button is disabled or
- not. Changing disable state will invoke GM_RENDER. A disabled
- button's border and label are all rendered in SHADOWPEN and then
- dusted in a ghosting pattern.
-
- Defaults to FALSE.
-
- Applicability is (OM_NEW, OM_SET, OM_UPDATE, OM_GET, OM_NOTIFY)
-
- GA_Text (STRPTR)
- Used to specify the NULL terminated string to use as the text
- for the gadget. The Text() function is used to draw the text.
- NULL is valid input. Changing the label will invoke GM_RENDER.
- Text string is clipped to fit inside the button via the
- TextLength() function. The text string may contain varargs
- format specifiers compatible to RawDoFmt() if the varargs data
- is supplied via BUTTON_VarArgs.
-
- Applicability is (OM_NEW, OM_SET, OM_UPDATE)
-
- GA_Image (struct Image *)
- Used to specify the image to use for the label of the gadget.
- The DrawImageState() function is used to draw the image.
- Changing the label will invoke GM_RENDER.
-
- Defaults to NULL.
-
- Applicability is (OM_NEW, OM_SET)
-
- GA_SelectImage (struct Image *)
- Used to specify the image to use for the label of the gadget
- in the selected state. The DrawImageState() function is used
- to draw the image. Changing the label will invoke GM_RENDER
- if the gadget is currently selected.
-
- Defaults to NULL.
-
- Applicability is (OM_NEW, OM_SET)
-
- GA_TextAttr (struct TextAttr *)
- Text attribute for the font to use for the text labels.
-
- Defaults to RPort->Font, which is often the screen or
- window preferences font.
-
- Applicability is (OM_NEW, OM_SET)
-
- GA_ReadOnly (BOOL)
- Read-only gadgets ignore activation attempts.
-
- Defaults to FALSE.
-
- Applicability is (OM_NEW, OM_SET, OM_UPDATE)
-
- BUTTON_AutoButton (UWORD)
- Used to create automatic button with one of the selected
- scaled image glyphs. Accepted settings are;
-
- BAG_POPFILE - popup file selection glyph
- BAG_POPDRAWER - popup drawer selection glyph
- BAG_POPFONT - popup font selection glyph
- BAG_CHECKBOX - checkmark glyph (same as checkbox.gadget)
- BAG_CANCELBOX - NOT IMPLEMENETED!
- BAG_UPARROW - up arrow
- BAG_DNARROW - down arrow
- BAG_RTARROW - right arrow
- BAG_LFARROW - left arrow
- BAG_POPTIME - popup time glyph
- BAG_POPSCREEN - popup screen mode glyph
-
- Defaults to 0.
-
- Applicability is (OM_NEW, OM_SET, OM_UPDATE)
-
- BUTTON_PushButton (BOOL)
- Used to indicate that the button stays pressed in when the
- user selects it with the mouse. The button may
- programmatically be deselected using {GA_Selected, FALSE}.
-
- Defaults to FALSE.
-
- Applicability is (OM_NEW, OM_SET, OM_UPDATE)
-
- BUTTON_TextPen (LONG)
- Indicate the pen number used to render the IDS_NORMAL text.
- If ~0 is specified, then TEXTPEN is used.
-
- Defaults to ~0.
-
- Applicability is (OM_NEW, OM_SET, OM_UPDATE)
-
- BUTTON_BackgroundPen (LONG)
- Indicate the pen number used to render the IDS_NORMAL
- background. If ~0 is specified, then BACKGROUNDPEN
- is used.
-
- Defaults to ~0.
-
- Applicability is (OM_NEW, OM_SET, OM_UPDATE)
-
- BUTTON_FillTextPen (LONG)
- Indicate the pen number used to render the IDS_SELECTED text.
- If ~0 is specified, then FILLTEXTPEN is used.
-
- Defaults to ~0.
-
- Applicability is (OM_NEW, OM_SET, OM_UPDATE)
-
- BUTTON_FillPen (LONG)
- Indicate the pen number used to render the IDS_SELECTED
- background. If ~0 is specified, then FILLPEN is used.
-
- Defaults to ~0.
-
- Applicability is (OM_NEW, OM_SET, OM_UPDATE)
-
- BUTTON_BevelStyle (WORD)
- Button bevel box rendering style, passed to bevel.image.
- Supports:
-
- BVS_NONE
- BVS_THIN
- BVS_BUTTON
- BVS_GROUP
-
- Defaults to BVS_BUTTON.
-
- Applicability is (OM_NEW, OM_SET)
-
- BUTTON_Transparent (BOOL)
- Make button background rendering transparent.
- EraseRect() is used rather than RectFill() so that
- custom backfill rendering hooks maybe utilized.
-
- Defaults to FALSE.
-
- Applicability is (OM_NEW, OM_SET)
-
- BUTTON_Justification (WORD)
- Justification mode of button text label.
- Supports:
-
- BCJ_LEFT
- BCJ_CENTER
- BCJ_RIGHT
-
- Defaults to BJ_CENTER.
-
- Applicability is (OM_NEW, OM_SET, OM_UPDATE)
-
- BUTTON_SoftStyle (WORD)
- Set the GA_TextAttr font's softstyle, ie BOLD, ITALICS, etc.
- See <graphics/text.h> SoftStyle definitions.
-
- Defaults to 0.
-
- Applicability is (OM_NEW, OM_SET)
-
- BUTTON_VarArgs (APTR)
- Varargs data array to supply data for RawDoFmt() when
- format specifiers are to be used in GA_Text text strings.
- The internal VarArgs result buffer is presently fixed at
- a maximum of 128 bytes, take care not to exceed this buffer.
-
- Defaults to NULL.
-
- Applicability is (OM_NEW, OM_SET)
-
- BUTTON_DomainString (STRPTR)
- Used to specify the NULL terminated string to use as the text
- to domain the gadgets minimum size. This string is NEVER
- rendered on screen. This is useful when you need to create
- a button with a empty ("") or NULL string, but want to enforce
- minimum size in a layout group based on some initializing
- string and the current preferenced font, rather some fixed
- pixel or weighted minimum. Added by request.
-
- Defaults to NULL.
-
- Applicability is (OM_NEW, OM_SET)
-
- BUTTON_Integer (int) (V42)
- Set an integer value to display a numeric string. Highly useful
- for interconnect notifications from sliders, scrollers, etc.
- Added by request.
-
- Applicability is (OM_NEW, OM_SET, OM_UPDATE)
-
- BUTTON_BitMap (struct BitMap *) (V42)
- Specify a BitMap to render in button, rather than image or
- text. Added by request, but use of bitmap.image is highly
- recommended for AmigaOS V39 and later.
-
- Defaults to NULL.
-
- Applicability is (OM_NEW, OM_SET)
-
- BUTTON_AnimButton (BOOL) (V42)
- Is button animatable? Use to turn animating on or off.
-
- Defaults to FALSE.
-
- Applicability is (OM_NEW, OM_SET)
-
- BUTTON_AnimImages (struct Image *) (V42)
- Sets an array of struct Images for animation
-
- Defaults to NULL.
-
- Applicability is (OM_NEW, OM_SET)
-
- BUTTON_SelAnimImages (struct Image *) (V42)
- Sets an array of alternate images for a selected state
- if used, must contain an equal number of images as the
- array used for BUTTON_AnimImages. It's wise to use the
- same sized images too
-
- Defaults to NULL.
-
- Applicability is (OM_NEW, OM_SET)
-
- BUTTON_MaxAnimImages (LONG) (V42)
- Number of images available in the arrays
-
- Defaults to 0.
-
- Applicability is (OM_NEW, OM_SET)
-
- BUTTON_AnimImageNumber (LONG) (V42)
- Current image number in the array(s) to use the range of
- available frames is 0 .. MaxAnimImages-1
-
- Defaults to 0.
-
- Applicability is (OM_NEW, OM_SET)
-
- BUTTON_AddAnimImageNumber (ULONG) (V42)
- Value to be added to the current image number counter
- the counter will wrap around at MaxAnimImages
-
- Applicability is (OM_SET, OM_UPDATE)
-
- BUTTON_SubAnimImageNumber (ULONG) (V42)
- Value to be subtracted from the current image number counter
- the counter will wrap around when less than 0
-
- Applicability is (OM_SET, OM_UPDATE)
-
- BUGS
- Unfortunetly, this class shares the same filename and tag range
- as the button gadget released by David Junod of C=, released in
- the GI1.lha V42 beta archive on BIX, and later the AT DevCD.
- We admit it, we screwed up... but its not a majorly serious issue
- as this class is atleast 90% compatible.
-
- A few rarely, possibly never, used tags of the original are NOT
- currently supported. The usage of BUTTON_PushButton in ReAction is
- not totally compatible to Junod's. Ours acts like GA_ToggleSelect
- of Junod's.
-
- Please report any incompatibilities immediatly.
- button_gc/BUTTON_GetClass button_gc/BUTTON_GetClass
-
- NAME
- BUTTON_GetClass -- Gets the pointer to the button class.
-
- SYNOPSIS
- button_class = BUTTON_GetClass();
- D0
-
- Class * BUTTON_GetClass(VOID);
-
- FUNCTION
- This function is only available in runtime linked version of the
- class, and is not in the compiler linker library button_gc.lib.
-
- Obtains the pointer to the Button gadget class for use with
- NewObject(). This function always returns a valid pointer so
- you do not need to check it. The reason is that if the library
- opens fine, then the pointer returned is already setup. (Of course
- this implies that if opening the library fails, you shouldn't be
- calling this.)
-
- Note that this function does not create the class, that is done
- when the class library is opened.
-
- INPUTS
- Nothing.
-
- RESULT
- button_class - Pointer to the Button gadget class.
-
- SEE ALSO
-