| Copyright | (c) Daan Leijen 2003 |
|---|---|
| License | wxWindows |
| Maintainer | wxhaskell-devel@lists.sourceforge.net |
| Stability | provisional |
| Portability | portable |
| Safe Haskell | None |
| Language | Haskell2010 |
Graphics.UI.WXCore.Draw
Description
Drawing.
- drawLines :: DC a -> [Point] -> IO ()
- drawPolygon :: DC a -> [Point] -> IO ()
- getTextExtent :: DC a -> String -> IO Size
- getFullTextExtent :: DC a -> String -> IO (Size, Int, Int)
- dcClearRect :: DC a -> Rect -> IO ()
- withPaintDC :: Window a -> (PaintDC () -> IO b) -> IO b
- withClientDC :: Window a -> (ClientDC () -> IO b) -> IO b
- dcDraw :: DC a -> IO b -> IO b
- withSVGFileDC :: FilePath -> (SVGFileDC () -> IO b) -> IO b
- withSVGFileDCWithSize :: FilePath -> Size -> (SVGFileDC () -> IO b) -> IO b
- withSVGFileDCWithSizeAndResolution :: FilePath -> Size -> Float -> (SVGFileDC () -> IO b) -> IO b
- data DrawState
- dcEncapsulate :: DC a -> IO b -> IO b
- dcGetDrawState :: DC a -> IO DrawState
- dcSetDrawState :: DC a -> DrawState -> IO ()
- drawStateDelete :: DrawState -> IO ()
- dcBuffer :: WindowDC a -> Rect -> (DC () -> IO ()) -> IO ()
- dcBufferWithRef :: WindowDC a -> Maybe (Var (Bitmap ())) -> Rect -> (DC () -> IO ()) -> IO ()
- dcBufferWithRefEx :: WindowDC a -> (DC () -> IO ()) -> Maybe (Var (Bitmap ())) -> Rect -> (DC () -> IO ()) -> IO ()
- dcBufferWithRefExGcdc :: WindowDC a -> (DC () -> IO ()) -> Maybe (Var (Bitmap ())) -> Rect -> (GCDC () -> IO b) -> IO ()
- windowGetViewStart :: Window a -> IO Point
- windowGetViewRect :: Window a -> IO Rect
- windowCalcUnscrolledPosition :: Window a -> Point -> IO Point
- data FontStyle = FontStyle {
- _fontSize :: !Int
- _fontFamily :: !FontFamily
- _fontShape :: !FontShape
- _fontWeight :: !FontWeight
- _fontUnderline :: !Bool
- _fontFace :: !String
- _fontEncoding :: !Int
- data FontFamily
- data FontShape
- data FontWeight
- fontDefault :: FontStyle
- fontSwiss :: FontStyle
- fontSmall :: FontStyle
- fontItalic :: FontStyle
- fontFixed :: FontStyle
- withFontStyle :: FontStyle -> (Font () -> IO a) -> IO a
- dcWithFontStyle :: DC a -> FontStyle -> IO b -> IO b
- dcSetFontStyle :: DC a -> FontStyle -> IO ()
- dcGetFontStyle :: DC a -> IO FontStyle
- fontCreateFromStyle :: FontStyle -> IO (Font (), IO ())
- fontGetFontStyle :: Font () -> IO FontStyle
- data BrushStyle = BrushStyle {
- _brushKind :: !BrushKind
- _brushColor :: !Color
- data BrushKind
- = BrushTransparent
- | BrushSolid
- | BrushHatch { }
- | BrushStipple {
- _brushBitmap :: !(Bitmap ())
- data HatchStyle
- brushDefault :: BrushStyle
- brushSolid :: Color -> BrushStyle
- brushTransparent :: BrushStyle
- dcSetBrushStyle :: DC a -> BrushStyle -> IO ()
- dcGetBrushStyle :: DC a -> IO BrushStyle
- withBrushStyle :: BrushStyle -> (Brush () -> IO a) -> IO a
- dcWithBrushStyle :: DC a -> BrushStyle -> IO b -> IO b
- dcWithBrush :: DC b -> Brush a -> IO c -> IO c
- brushCreateFromStyle :: BrushStyle -> IO (Brush (), IO ())
- brushGetBrushStyle :: Brush a -> IO BrushStyle
- data PenStyle = PenStyle {}
- data PenKind
- = PenTransparent
- | PenSolid
- | PenDash { }
- | PenHatch {
- _penHatch :: !HatchStyle
- | PenStipple {
- _penBitmap :: !(Bitmap ())
- data CapStyle
- data JoinStyle
- data DashStyle
- penDefault :: PenStyle
- penColored :: Color -> Int -> PenStyle
- penTransparent :: PenStyle
- dcSetPenStyle :: DC a -> PenStyle -> IO ()
- dcGetPenStyle :: DC a -> IO PenStyle
- withPenStyle :: PenStyle -> (Pen () -> IO a) -> IO a
- dcWithPenStyle :: DC a -> PenStyle -> IO b -> IO b
- dcWithPen :: DC a -> Pen p -> IO b -> IO b
- penCreateFromStyle :: PenStyle -> IO (Pen (), IO ())
- penGetPenStyle :: Pen a -> IO PenStyle
DC
drawPolygon :: DC a -> [Point] -> IO () Source #
Draw a polygon. The polygon is filled with the odd-even rule.
getTextExtent :: DC a -> String -> IO Size Source #
Gets the dimensions of the string using the currently selected font.
getFullTextExtent :: DC a -> String -> IO (Size, Int, Int) Source #
Gets the dimensions of the string using the currently selected font. Takes text string to measure, and returns the size, descent and external leading. Descent is the dimension from the baseline of the font to the bottom of the descender , and external leading is any extra vertical space added to the font by the font designer (is usually zero).
dcClearRect :: DC a -> Rect -> IO () Source #
Clear a specific rectangle with the current background brush.
This is preferred to dcClear for scrolled windows as dcClear sometimes
only clears the original view area, instead of the currently visible scrolled area.
Unfortunately, the background brush is not set correctly on wxMAC 2.4, and
this will always clear to a white color on mac systems.
Creation
withPaintDC :: Window a -> (PaintDC () -> IO b) -> IO b Source #
Use a PaintDC.
Draw on a window within an 'on paint' event.
withClientDC :: Window a -> (ClientDC () -> IO b) -> IO b Source #
Use a ClientDC.
Draw on a window from outside an 'on paint' event.
withSVGFileDCWithSizeAndResolution :: FilePath -> Size -> Float -> (SVGFileDC () -> IO b) -> IO b Source #
Draw state
The drawing state (pen,brush,font,text color,text background color) of a device context.
dcEncapsulate :: DC a -> IO b -> IO b Source #
Run a computation after which the original drawing state of the DC is restored.
dcGetDrawState :: DC a -> IO DrawState Source #
Get the drawing state. (Should be deleted with drawStateDelete).
drawStateDelete :: DrawState -> IO () Source #
Release the resources associated with a drawing state.
Double buffering
dcBuffer :: WindowDC a -> Rect -> (DC () -> IO ()) -> IO () Source #
Use double buffering to draw to a DC -- reduces flicker. Note that
the windowOnPaint handler can already take care of buffering automatically.
The rectangle argument is normally the view rectangle (windowGetViewRect).
Uses a MemoryDC to draw into memory first and than blit the result to
the device context. The memory area allocated is the minimal size necessary
to accomodate the rectangle, but is re-allocated on each invokation.
dcBufferWithRef :: WindowDC a -> Maybe (Var (Bitmap ())) -> Rect -> (DC () -> IO ()) -> IO () Source #
Optimized double buffering. Takes a possible reference to a bitmap. If it is
Nothing, a new bitmap is allocated everytime. Otherwise, the reference is used
to re-use an allocated bitmap if possible. The Rect argument specifies the
the current logical view rectangle. The last argument is called to draw on the
memory DC.
dcBufferWithRefEx :: WindowDC a -> (DC () -> IO ()) -> Maybe (Var (Bitmap ())) -> Rect -> (DC () -> IO ()) -> IO () Source #
Optimized double buffering. Takes a clear routine as its first argument. Normally this is something like 'dc -> dcClearRect dc viewArea' but on certain platforms, like MacOS X, special handling is necessary.
dcBufferWithRefExGcdc :: WindowDC a -> (DC () -> IO ()) -> Maybe (Var (Bitmap ())) -> Rect -> (GCDC () -> IO b) -> IO () Source #
Optimized double buffering with a GCDC. Takes a clear routine as its first argument. Normally this is something like 'dc -> dcClearRect dc viewArea' but on certain platforms, like MacOS X, special handling is necessary.
Scrolled windows
windowGetViewRect :: Window a -> IO Rect Source #
Get logical view rectangle, adjusted for scrolling.
windowCalcUnscrolledPosition :: Window a -> Point -> IO Point Source #
Get logical coordinates adjusted for scrolling.
Font
Font descriptor. The font is normally specified thru the FontFamily, giving
some degree of portability. The _fontFace can be used to specify the exact (platform
dependent) font.
Note that the original wxWidgets FontStyle is renamed to FontShape.
Constructors
| FontStyle | |
Fields
| |
data FontFamily Source #
Standard font families.
Constructors
| FontDefault | A system default font. |
| FontDecorative | Decorative font. |
| FontRoman | Formal serif font. |
| FontScript | Hand writing font. |
| FontSwiss | Sans-serif font. |
| FontModern | Fixed pitch font. |
| FontTeletype | A teletype (i.e. monospaced) font |
Instances
The font style.
Constructors
| ShapeNormal | |
| ShapeItalic | |
| ShapeSlant |
fontDefault :: FontStyle Source #
Default 10pt font.
fontItalic :: FontStyle Source #
Default 10pt italic.
withFontStyle :: FontStyle -> (Font () -> IO a) -> IO a Source #
Use a font that is automatically deleted at the end of the computation.
dcWithFontStyle :: DC a -> FontStyle -> IO b -> IO b Source #
Set a font that is automatically deleted at the end of the computation.
Brush
data BrushStyle Source #
Brush style.
Constructors
| BrushStyle | |
Fields
| |
Instances
Brush kind.
Constructors
| BrushTransparent | No filling |
| BrushSolid | Solid color |
| BrushHatch | Hatch pattern |
Fields | |
| BrushStipple | Bitmap pattern (on win95 only 8x8 bitmaps are supported) |
Fields
| |
data HatchStyle Source #
Hatch style.
Constructors
| HatchBDiagonal | Backward diagonal |
| HatchCrossDiag | Crossed diagonal |
| HatchFDiagonal | Forward diagonal |
| HatchCross | Crossed orthogonal |
| HatchHorizontal | Horizontal |
| HatchVertical | Vertical |
Instances
brushDefault :: BrushStyle Source #
Default brush (transparent, black).
brushSolid :: Color -> BrushStyle Source #
A solid brush of a specific color.
brushTransparent :: BrushStyle Source #
A transparent brush.
dcSetBrushStyle :: DC a -> BrushStyle -> IO () Source #
Set the brush style (and text background color) of a device context.
dcGetBrushStyle :: DC a -> IO BrushStyle Source #
Get the current brush of a device context.
withBrushStyle :: BrushStyle -> (Brush () -> IO a) -> IO a Source #
Use a brush that is automatically deleted at the end of the computation.
dcWithBrushStyle :: DC a -> BrushStyle -> IO b -> IO b Source #
Use a brush that is automatically deleted at the end of the computation.
brushCreateFromStyle :: BrushStyle -> IO (Brush (), IO ()) Source #
Create a new brush from a BrushStyle. Returns both the brush and its deletion procedure.
brushGetBrushStyle :: Brush a -> IO BrushStyle Source #
Get the BrushStyle of Brush.
Pen
Pen style.
Constructors
| PenStyle | |
Pen kinds.
Constructors
| PenTransparent | No edge. |
| PenSolid | |
| PenDash | |
| PenHatch | |
Fields
| |
| PenStipple |
|
Fields
| |
Cap style
Constructors
| CapRound | End points are rounded |
| CapProjecting | |
| CapButt |
Join style.
Dash style
Constructors
| DashDot | |
| DashLong | |
| DashShort | |
| DashDotShort |
penDefault :: PenStyle Source #
Default pen (PenStyle PenSolid black 1 CapRound JoinRound)
penTransparent :: PenStyle Source #
A transparent pen.
dcSetPenStyle :: DC a -> PenStyle -> IO () Source #
Set the current pen style. The text color is also adapted.
withPenStyle :: PenStyle -> (Pen () -> IO a) -> IO a Source #
Use a pen that is automatically deleted at the end of the computation.
dcWithPenStyle :: DC a -> PenStyle -> IO b -> IO b Source #
Set a pen that is automatically deleted at the end of the computation.
dcWithPen :: DC a -> Pen p -> IO b -> IO b Source #
Set a pen that is used during a certain computation.