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| 1 |
| 2 function make_paint(size, color) |
| 3 local paint = Sk.newPaint(); |
| 4 paint:setAntiAlias(true) |
| 5 paint:setTextSize(size) |
| 6 paint:setColor(color) |
| 7 return paint |
| 8 end |
| 9 |
| 10 function find_paint(paints, style) |
| 11 if not style then |
| 12 style = "child" |
| 13 end |
| 14 local paint = paints[style] |
| 15 return paint |
| 16 end |
| 17 |
| 18 function draw_node(canvas, node, x, y, paints) |
| 19 if node.text then |
| 20 local paint = find_paint(paints, node.style) |
| 21 canvas:drawText(node.text, x, y, paint) |
| 22 end |
| 23 if node.draw then |
| 24 node.draw(canvas) |
| 25 end |
| 26 end |
| 27 |
| 28 function drawSlide(canvas, slide, template, paints) |
| 29 draw_node(canvas, slide, template.title.x, template.title.y, paints) |
| 30 |
| 31 if slide.children then |
| 32 local x = template.child.x |
| 33 local y = template.child.y |
| 34 local dy = template.child.dy |
| 35 for i = 1, #slide.children do |
| 36 draw_node(canvas, slide.children[i], x, y, paints) |
| 37 y = y + dy |
| 38 end |
| 39 end |
| 40 end |
| 41 |
| 42 --------------------------------------------------------------------------------
------ |
| 43 |
| 44 gTemplate = { |
| 45 title = { x = 10, y = 64, textSize = 64 }, |
| 46 child = { x = 40, y = 120, dy = 50, textSize = 40 }, |
| 47 } |
| 48 |
| 49 gPaints = {} |
| 50 gPaints.title = make_paint(gTemplate.title.textSize, { a=1, r=0, g=0, b=0 } ) |
| 51 gPaints.child = make_paint(gTemplate.child.textSize, { a=.75, r=0, g=0, b=0 } ) |
| 52 |
| 53 gRedPaint = Sk.newPaint() |
| 54 gRedPaint:setAntiAlias(true) |
| 55 gRedPaint:setColor{a=1, r=1, g=0, b=0 } |
| 56 |
| 57 gSlides = { |
| 58 { text = "Title1", style="title", color = { a=1, r=1, g=0, b=0 }, |
| 59 children = { |
| 60 { text = "bullet 1", style = "child" }, |
| 61 { text = "bullet 2", style = "child" }, |
| 62 { text = "bullet 3", style = "child" }, |
| 63 { draw = function (canvas) |
| 64 canvas:drawOval({left=300, top=300, right=400, bottom=400},
gRedPaint) |
| 65 end }, |
| 66 }, |
| 67 }, |
| 68 { text = "Title2", style="title", color = { a=1, r=0, g=1, b=0 }, |
| 69 children = { |
| 70 { text = "bullet uno", style = "child" }, |
| 71 { text = "bullet 2", style = "child" }, |
| 72 { text = "bullet tres", style = "child" }, |
| 73 } |
| 74 }, |
| 75 { text = "Title3", style="title", |
| 76 children = { |
| 77 { text = "bullet 1", style = "child", }, |
| 78 { text = "bullet 2", style = "child", color = { r=0, g=0, b=1 } }, |
| 79 { text = "bullet 3", style = "child" }, |
| 80 } |
| 81 } |
| 82 } |
| 83 |
| 84 gSlideIndex = 1 |
| 85 |
| 86 --------------------------------------------------------------------------------
------ |
| 87 |
| 88 function onDrawContent(canvas) |
| 89 drawSlide(canvas, gSlides[gSlideIndex], gTemplate, gPaints) |
| 90 |
| 91 return false -- we're not animating |
| 92 end |
| 93 |
| 94 function onClickHandler(x, y) |
| 95 if x < 100 and y < 100 then |
| 96 onNextSlide() |
| 97 return true |
| 98 end |
| 99 return false |
| 100 end |
| 101 |
| 102 function onNextSlide() |
| 103 gSlideIndex = gSlideIndex + 1 |
| 104 if gSlideIndex > #gSlides then |
| 105 gSlideIndex = 1 |
| 106 end |
| 107 end |
| 108 |
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