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This page was created on 23-Apr-2022 17:05 by Harry Metske

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Version Date Modified Size Author Changes ... Change note
58 23-Apr-2022 17:06 29 KB HarryMetske to previous
57 23-Apr-2022 17:05 29 KB HarryMetske to previous | to last
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55 23-Apr-2022 17:05 26 KB Harry Metske to previous | to last
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52 23-Apr-2022 17:05 24 KB 10.0.0.138 to previous | to last
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45 23-Apr-2022 17:05 20 KB 10.0.0.138 to previous | to last
44 23-Apr-2022 17:05 20 KB HarryMetske to previous | to last
43 23-Apr-2022 17:05 19 KB HarryMetske to previous | to last
42 23-Apr-2022 17:05 19 KB Harry Metske to previous | to last
41 23-Apr-2022 17:05 19 KB Harry Metske to previous | to last

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At line 458 added 49 lines
! week 6
__Graphics__
Classes:
* Drawable (bitmap, color, shape)
** ShapeDrawable
** BitmapDrawable
** ColorDrawable
Drawing to Views, attach Drawables to Views (via xml or programming)
__ShapeDrawable__
Are use for simple shapes, represented by subclasses:
* PathShape (lines)
* RectShape (rectangles)
* OvalShape (ovals & rings)
__Canvas__
You need 4 things:
* bitmap
* canvas (for drawing to the underlying bitmap
* drawing primitive (rect, path, text, bitmap)
* paint object (for setting drawing colors & styes)
Drawing primitives:
* drawText()
* drawPoints()
* drawColors()
* drawOval()
* drawBitmap()
Paint: setStrokeWidth(), setTextSize(), setColor(), setAntiAlias()
Canvas is suitable if you want to update the drawing frequently.
Access to Canvas through GenericViews (less frequent updates) or a subclass of __SurfaceView__ (for frequent updates)
provide secondary thread for drawing.
ostInvalidate() tells android to redraw a View.