--- a/Cairo__ClockView.st Wed Dec 24 22:29:13 2014 +0100
+++ b/Cairo__ClockView.st Wed Dec 24 23:59:59 2014 +0100
@@ -52,30 +52,31 @@
redraw
- | time hours mins secs |
+ | image image_cr time hours mins secs |
self clippingRectangle:
(Smalltalk::Rectangle left:1 top:1 width:self width height:self height).
cr isNil ifTrue:[
cr := self cairo.
].
+ image_cr := Cairo::GraphicsContext on: (image := Cairo::Surface forImageFormatARGB32width: self width height: self height).
"/ scale to unit square and translate (0, 0) to be (0.5, 0.5), i.e.
"/ the center of the window
- cr save.
- cr scale: self extent.
- cr translate: (0.5 @ 0.5).
- cr lineWidth: 0.05.
+ image_cr save.
+ image_cr scale: self extent.
+ image_cr translate: (0.5 @ 0.5).
+ image_cr lineWidth: 0.05.
- cr paint: (Color red: 33 green: 61 blue: 11).
- cr paint.
+ image_cr paint: (Color red: 33 green: 61 blue: 11).
+ image_cr paint.
- cr arcX: 0 y: 0 radius: 0.42 from: 0 to: (2 * (Float pi)).
- cr paint: Color white.
- cr fillAndPreserve.
- cr paint: Color black.
- cr strokeAndPreserve.
- cr clip.
+ image_cr arcX: 0 y: 0 radius: 0.42 from: 0 to: (2 * (Float pi)).
+ image_cr paint: Color white.
+ image_cr fillAndPreserve.
+ image_cr paint: Color black.
+ image_cr strokeAndPreserve.
+ image_cr clip.
"Now, clock ticks"
@@ -83,23 +84,23 @@
| inset |
inset := 0.05.
- cr save.
+ image_cr save.
- cr lineCap: Cairo::LineCap LINE_CAP_ROUND.
+ image_cr lineCap: Cairo::LineCap LINE_CAP_ROUND.
(i \\ 3) ~~ 0 ifTrue:[
inset := inset * 0.8.
- cr lineWidth: 0.03.
+ image_cr lineWidth: 0.03.
].
- cr moveToX: (0.42 - inset) * ( i * (Float pi / 6)) cos
+ image_cr moveToX: (0.42 - inset) * ( i * (Float pi / 6)) cos
y: (0.42 - inset) * ( i * (Float pi / 6)) sin.
- cr lineToX: (0.42 ) * ( i * (Float pi / 6)) cos
+ image_cr lineToX: (0.42 ) * ( i * (Float pi / 6)) cos
y: (0.42 ) * ( i * (Float pi / 6)) sin.
- cr stroke.
+ image_cr stroke.
- cr restore.
+ image_cr restore.
].
"/ Not, the current time"
@@ -110,45 +111,49 @@
mins := time minutes * (Float pi / 30).
secs := time seconds * (Float pi / 30).
- cr save.
- cr lineCap: Cairo::LineCap LINE_CAP_ROUND.
+ image_cr save.
+ image_cr lineCap: Cairo::LineCap LINE_CAP_ROUND.
"/ draw the seconds hand
- cr save.
- cr lineWidth: 0.016.
- cr paint: ((Color red: 70 green: 70 blue: 70) alpha: 0.8).
- cr moveToX: 0.0 y: 0.0.
- cr lineToX: (secs sin * (0.42 * 0.9))
+ image_cr save.
+ image_cr lineWidth: 0.016.
+ image_cr paint: ((Color red: 70 green: 70 blue: 70) alpha: 0.8).
+ image_cr moveToX: 0.0 y: 0.0.
+ image_cr lineToX: (secs sin * (0.42 * 0.9))
y: (-1 * (secs cos * (0.42 * 0.9))).
- cr stroke.
- cr restore.
+ image_cr stroke.
+ image_cr restore.
"/ draw th minutes
- cr paint: ((Color red: 11 green: 33 blue: 61) alpha: 0.7).
- cr moveToX: 0.0 y: 0.0.
- cr lineToX: ((mins + (secs / 60)) sin * (0.42 * 0.8))
+ image_cr paint: ((Color red: 11 green: 33 blue: 61) alpha: 0.7).
+ image_cr moveToX: 0.0 y: 0.0.
+ image_cr lineToX: ((mins + (secs / 60)) sin * (0.42 * 0.8))
y: (-1 * ((mins + (secs / 60)) cos * (0.42 * 0.8))).
- cr stroke.
+ image_cr stroke.
"/ draw the hours hand
- cr paint: ((Color red: 33 green: 61 blue: 11) alpha: 0.6).
- cr moveToX: 0.0 y: 0.0.
- cr lineToX: ((hours + (mins / 12)) sin * (0.42 * 0.5))
+ image_cr paint: ((Color red: 33 green: 61 blue: 11) alpha: 0.6).
+ image_cr moveToX: 0.0 y: 0.0.
+ image_cr lineToX: ((hours + (mins / 12)) sin * (0.42 * 0.5))
y: (-1 * ((hours + (mins / 12)) cos * (0.42 * 0.5))).
- cr stroke.
+ image_cr stroke.
- cr restore.
- cr arcX: 0 y: 0 radius: 0.01 from: 0 to: (2 * (Float pi)).
- cr fill.
+ image_cr restore.
+ image_cr arcX: 0 y: 0 radius: 0.01 from: 0 to: (2 * (Float pi)).
+ image_cr fill.
- cr restore.
+ image_cr restore.
+
+ cr setSourceSurface: image.
+ cr paint.
"Created: / 16-06-2012 / 23:25:36 / Jan Vrany <jan.vrany@fit.cvut.cz>"
+ "Modified: / 24-12-2014 / 23:56:53 / Jan Vrany <jan.vrany@fit.cvut.cz>"
!
redrawX: x y: y width: w height: h
@@ -163,3 +168,4 @@
version_HG
^ '$Changeset: <not expanded> $'
! !
+