reed | 86217d8 | 2014-10-25 20:44:40 -0700 | [diff] [blame] | 1 | |
| 2 | gPath = "/skia/trunk/resources/" |
| 3 | |
| 4 | function load_file(file) |
reed | 07dada7 | 2014-10-29 20:36:05 -0700 | [diff] [blame] | 5 | local prev_path = package.path |
reed | 86217d8 | 2014-10-25 20:44:40 -0700 | [diff] [blame] | 6 | package.path = package.path .. ";" .. gPath .. file .. ".lua" |
| 7 | require(file) |
reed | 07dada7 | 2014-10-29 20:36:05 -0700 | [diff] [blame] | 8 | package.path = prev_path |
reed | d2e7dfb | 2014-10-13 19:43:17 -0700 | [diff] [blame] | 9 | end |
| 10 | |
reed | 86217d8 | 2014-10-25 20:44:40 -0700 | [diff] [blame] | 11 | load_file("slides_utils") |
reed | d2e7dfb | 2014-10-13 19:43:17 -0700 | [diff] [blame] | 12 | |
reed | de330ff | 2014-11-02 19:19:34 -0800 | [diff] [blame] | 13 | gSlides = parse_file(io.open("/skia/trunk/resources/slides_content2.lua", "r")) |
reed | 18ea777 | 2014-10-11 11:28:07 -0700 | [diff] [blame] | 14 | |
reed | bdc49ae | 2014-10-14 09:34:52 -0700 | [diff] [blame] | 15 | function make_rect(l, t, r, b) |
| 16 | return { left = l, top = t, right = r, bottom = b } |
| 17 | end |
| 18 | |
| 19 | function make_paint(typefacename, stylebits, size, color) |
reed | 18ea777 | 2014-10-11 11:28:07 -0700 | [diff] [blame] | 20 | local paint = Sk.newPaint(); |
| 21 | paint:setAntiAlias(true) |
reed | 09a1d67 | 2014-10-11 13:13:11 -0700 | [diff] [blame] | 22 | paint:setSubpixelText(true) |
reed | bdc49ae | 2014-10-14 09:34:52 -0700 | [diff] [blame] | 23 | paint:setTypeface(Sk.newTypeface(typefacename, stylebits)) |
reed | 18ea777 | 2014-10-11 11:28:07 -0700 | [diff] [blame] | 24 | paint:setTextSize(size) |
| 25 | paint:setColor(color) |
| 26 | return paint |
| 27 | end |
| 28 | |
reed | 9e233b2 | 2014-11-03 12:18:24 -0800 | [diff] [blame^] | 29 | function draw_bullet(canvas, x, y, paint, indent) |
| 30 | if 0 == indent then |
| 31 | return |
| 32 | end |
| 33 | local ps = paint:getTextSize() |
| 34 | local cx = x - ps * .8 |
| 35 | local cy = y - ps * .4 |
| 36 | local radius = ps * .2 |
| 37 | canvas:drawCircle(cx, cy, radius, paint) |
| 38 | end |
| 39 | |
reed | de330ff | 2014-11-02 19:19:34 -0800 | [diff] [blame] | 40 | function drawSlide(canvas, slide, master_template) |
| 41 | template = master_template.slide -- need to sniff the slide to know if we're title or slide |
reed | bdc49ae | 2014-10-14 09:34:52 -0700 | [diff] [blame] | 42 | |
| 43 | local x = template.margin_x |
| 44 | local y = template.margin_y |
reed | 9e233b2 | 2014-11-03 12:18:24 -0800 | [diff] [blame^] | 45 | local scale = 1.25 |
reed | bdc49ae | 2014-10-14 09:34:52 -0700 | [diff] [blame] | 46 | |
reed | de330ff | 2014-11-02 19:19:34 -0800 | [diff] [blame] | 47 | if slide.blockstyle == "code" then |
| 48 | local paint = master_template.codePaint |
| 49 | local fm = paint:getFontMetrics() |
| 50 | local height = #slide * (fm.descent - fm.ascent) |
| 51 | y = (480 - height) / 2 |
| 52 | for i = 1, #slide do |
| 53 | local node = slide[i] |
reed | 9e233b2 | 2014-11-03 12:18:24 -0800 | [diff] [blame^] | 54 | y = y - fm.ascent * scale |
reed | de330ff | 2014-11-02 19:19:34 -0800 | [diff] [blame] | 55 | canvas:drawText(node.text, x, y, paint) |
reed | 9e233b2 | 2014-11-03 12:18:24 -0800 | [diff] [blame^] | 56 | y = y + fm.descent * scale |
reed | de330ff | 2014-11-02 19:19:34 -0800 | [diff] [blame] | 57 | end |
| 58 | return |
| 59 | end |
| 60 | |
reed | d2e7dfb | 2014-10-13 19:43:17 -0700 | [diff] [blame] | 61 | for i = 1, #slide do |
| 62 | local node = slide[i] |
reed | 9fbc3f3 | 2014-10-21 07:12:58 -0700 | [diff] [blame] | 63 | local paint = template[node.indent + 1].paint |
| 64 | local extra_dy = template[node.indent + 1].extra_dy |
reed | d2e7dfb | 2014-10-13 19:43:17 -0700 | [diff] [blame] | 65 | local fm = paint:getFontMetrics() |
reed | 9e233b2 | 2014-11-03 12:18:24 -0800 | [diff] [blame^] | 66 | local x_offset = -fm.ascent * node.indent * 1.25 |
reed | bdc49ae | 2014-10-14 09:34:52 -0700 | [diff] [blame] | 67 | |
reed | d2e7dfb | 2014-10-13 19:43:17 -0700 | [diff] [blame] | 68 | y = y - fm.ascent * scale |
reed | 9e233b2 | 2014-11-03 12:18:24 -0800 | [diff] [blame^] | 69 | draw_bullet(canvas, x + x_offset, y, paint, node.indent) |
reed | bdc49ae | 2014-10-14 09:34:52 -0700 | [diff] [blame] | 70 | canvas:drawText(node.text, x + x_offset, y, paint) |
reed | 9fbc3f3 | 2014-10-21 07:12:58 -0700 | [diff] [blame] | 71 | y = y + fm.descent * scale + extra_dy |
| 72 | end |
| 73 | end |
| 74 | |
reed | 18ea777 | 2014-10-11 11:28:07 -0700 | [diff] [blame] | 75 | -------------------------------------------------------------------------------------- |
reed | 9fbc3f3 | 2014-10-21 07:12:58 -0700 | [diff] [blame] | 76 | function make_tmpl(paint, extra_dy) |
| 77 | return { paint = paint, extra_dy = extra_dy } |
| 78 | end |
reed | 18ea777 | 2014-10-11 11:28:07 -0700 | [diff] [blame] | 79 | |
reed | bdc49ae | 2014-10-14 09:34:52 -0700 | [diff] [blame] | 80 | function SkiaPoint_make_template() |
| 81 | local title = { |
| 82 | margin_x = 30, |
| 83 | margin_y = 100, |
| 84 | } |
reed | 9e233b2 | 2014-11-03 12:18:24 -0800 | [diff] [blame^] | 85 | title[1] = make_paint("Arial", 1, 45, { a=1, r=1, g=1, b=1 }) |
reed | bdc49ae | 2014-10-14 09:34:52 -0700 | [diff] [blame] | 86 | title[1]:setTextAlign("center") |
reed | 9fbc3f3 | 2014-10-21 07:12:58 -0700 | [diff] [blame] | 87 | title[2] = make_paint("Arial", 1, 25, { a=1, r=.75, g=.75, b=.75 }) |
reed | bdc49ae | 2014-10-14 09:34:52 -0700 | [diff] [blame] | 88 | title[2]:setTextAlign("center") |
reed | 18ea777 | 2014-10-11 11:28:07 -0700 | [diff] [blame] | 89 | |
reed | bdc49ae | 2014-10-14 09:34:52 -0700 | [diff] [blame] | 90 | local slide = { |
| 91 | margin_x = 20, |
reed | 9fbc3f3 | 2014-10-21 07:12:58 -0700 | [diff] [blame] | 92 | margin_y = 25, |
reed | bdc49ae | 2014-10-14 09:34:52 -0700 | [diff] [blame] | 93 | } |
reed | 9e233b2 | 2014-11-03 12:18:24 -0800 | [diff] [blame^] | 94 | slide[1] = make_tmpl(make_paint("Arial", 1, 35, { a=1, r=1, g=1, b=1 }), 18) |
| 95 | slide[2] = make_tmpl(make_paint("Arial", 0, 25, { a=1, r=1, g=1, b=1 }), 0) |
| 96 | slide[3] = make_tmpl(make_paint("Arial", 0, 20, { a=1, r=.9, g=.9, b=.9 }), 0) |
reed | bdc49ae | 2014-10-14 09:34:52 -0700 | [diff] [blame] | 97 | |
| 98 | return { |
| 99 | title = title, |
| 100 | slide = slide, |
reed | 9e233b2 | 2014-11-03 12:18:24 -0800 | [diff] [blame^] | 101 | codePaint = make_paint("Courier", 0, 20, { a=1, r=.9, g=.9, b=.9 }), |
reed | bdc49ae | 2014-10-14 09:34:52 -0700 | [diff] [blame] | 102 | } |
| 103 | end |
| 104 | |
| 105 | gTemplate = SkiaPoint_make_template() |
reed | 18ea777 | 2014-10-11 11:28:07 -0700 | [diff] [blame] | 106 | |
| 107 | gRedPaint = Sk.newPaint() |
| 108 | gRedPaint:setAntiAlias(true) |
| 109 | gRedPaint:setColor{a=1, r=1, g=0, b=0 } |
| 110 | |
reed | 09a1d67 | 2014-10-11 13:13:11 -0700 | [diff] [blame] | 111 | -- animation.proc is passed the canvas before drawing. |
| 112 | -- The animation.proc returns itself or another animation (which means keep animating) |
| 113 | -- or it returns nil, which stops the animation. |
| 114 | -- |
| 115 | local gCurrAnimation |
| 116 | |
reed | f355df5 | 2014-10-12 12:18:40 -0700 | [diff] [blame] | 117 | gSlideIndex = 1 |
| 118 | |
reed | 96affcd | 2014-10-13 12:38:04 -0700 | [diff] [blame] | 119 | function new_drawable_picture(pic) |
| 120 | return { |
| 121 | picture = pic, |
| 122 | width = pic:width(), |
| 123 | height = pic:height(), |
| 124 | draw = function (self, canvas, x, y, paint) |
| 125 | canvas:drawPicture(self.picture, x, y, paint) |
| 126 | end |
| 127 | } |
| 128 | end |
| 129 | |
| 130 | function new_drawable_image(img) |
| 131 | return { |
| 132 | image = img, |
| 133 | width = img:width(), |
| 134 | height = img:height(), |
| 135 | draw = function (self, canvas, x, y, paint) |
| 136 | canvas:drawImage(self.image, x, y, paint) |
| 137 | end |
| 138 | } |
| 139 | end |
reed | f355df5 | 2014-10-12 12:18:40 -0700 | [diff] [blame] | 140 | |
reed | 86217d8 | 2014-10-25 20:44:40 -0700 | [diff] [blame] | 141 | function new_drawable_slide(slide) |
| 142 | return { |
| 143 | slide = slide, |
| 144 | draw = function (self, canvas, x, y, paint) |
| 145 | if (nil == paint or ("number" == type(paint) and (1 == paint))) then |
| 146 | canvas:save() |
| 147 | else |
| 148 | canvas:saveLayer(paint) |
| 149 | end |
| 150 | canvas:translate(x, y) |
| 151 | drawSlide(canvas, self.slide, gTemplate) |
| 152 | canvas:restore() |
| 153 | end |
| 154 | } |
| 155 | end |
| 156 | |
| 157 | function next_slide() |
| 158 | local prev = gSlides[gSlideIndex] |
| 159 | |
| 160 | gSlideIndex = gSlideIndex + 1 |
| 161 | if gSlideIndex > #gSlides then |
| 162 | gSlideIndex = 1 |
| 163 | end |
| 164 | |
| 165 | spawn_transition(prev, gSlides[gSlideIndex], true) |
| 166 | end |
| 167 | |
| 168 | function prev_slide() |
| 169 | local prev = gSlides[gSlideIndex] |
| 170 | |
| 171 | gSlideIndex = gSlideIndex - 1 |
| 172 | if gSlideIndex < 1 then |
| 173 | gSlideIndex = #gSlides |
| 174 | end |
| 175 | |
| 176 | spawn_transition(prev, gSlides[gSlideIndex], false) |
| 177 | end |
| 178 | |
reed | 468b181 | 2014-10-19 11:42:54 -0700 | [diff] [blame] | 179 | function convert_to_picture_drawable(slide) |
| 180 | local rec = Sk.newPictureRecorder() |
| 181 | drawSlide(rec:beginRecording(640, 480), slide, gTemplate) |
| 182 | return new_drawable_picture(rec:endRecording()) |
| 183 | end |
| 184 | |
| 185 | function convert_to_image_drawable(slide) |
| 186 | local surf = Sk.newRasterSurface(640, 480) |
| 187 | drawSlide(surf:getCanvas(), slide, gTemplate) |
| 188 | return new_drawable_image(surf:newImageSnapshot()) |
| 189 | end |
| 190 | |
reed | 86217d8 | 2014-10-25 20:44:40 -0700 | [diff] [blame] | 191 | -- gMakeDrawable = convert_to_picture_drawable |
| 192 | gMakeDrawable = new_drawable_slide |
reed | 468b181 | 2014-10-19 11:42:54 -0700 | [diff] [blame] | 193 | |
reed | 07dada7 | 2014-10-29 20:36:05 -0700 | [diff] [blame] | 194 | load_file("slides_transitions") |
| 195 | |
reed | f355df5 | 2014-10-12 12:18:40 -0700 | [diff] [blame] | 196 | function spawn_transition(prevSlide, nextSlide, is_forward) |
| 197 | local transition |
| 198 | if is_forward then |
reed | 07dada7 | 2014-10-29 20:36:05 -0700 | [diff] [blame] | 199 | transition = gTransitionTable[nextSlide.transition] |
reed | f355df5 | 2014-10-12 12:18:40 -0700 | [diff] [blame] | 200 | else |
reed | 07dada7 | 2014-10-29 20:36:05 -0700 | [diff] [blame] | 201 | transition = gTransitionTable[prevSlide.transition] |
reed | f355df5 | 2014-10-12 12:18:40 -0700 | [diff] [blame] | 202 | end |
| 203 | |
| 204 | if not transition then |
reed | d2e7dfb | 2014-10-13 19:43:17 -0700 | [diff] [blame] | 205 | transition = fade_slide_transition |
reed | f355df5 | 2014-10-12 12:18:40 -0700 | [diff] [blame] | 206 | end |
| 207 | |
reed | 468b181 | 2014-10-19 11:42:54 -0700 | [diff] [blame] | 208 | local prevDrawable = gMakeDrawable(prevSlide) |
| 209 | local nextDrawable = gMakeDrawable(nextSlide) |
reed | 96affcd | 2014-10-13 12:38:04 -0700 | [diff] [blame] | 210 | gCurrAnimation = transition(prevDrawable, nextDrawable, is_forward) |
reed | f355df5 | 2014-10-12 12:18:40 -0700 | [diff] [blame] | 211 | end |
| 212 | |
| 213 | -------------------------------------------------------------------------------------- |
| 214 | |
reed | 09a1d67 | 2014-10-11 13:13:11 -0700 | [diff] [blame] | 215 | function spawn_rotate_animation() |
| 216 | gCurrAnimation = { |
| 217 | angle = 0, |
| 218 | angle_delta = 5, |
| 219 | pivot_x = 320, |
| 220 | pivot_y = 240, |
reed | f355df5 | 2014-10-12 12:18:40 -0700 | [diff] [blame] | 221 | proc = function (self, canvas, drawSlideProc) |
| 222 | if self.angle >= 360 then |
| 223 | drawSlideProc(canvas) |
reed | 09a1d67 | 2014-10-11 13:13:11 -0700 | [diff] [blame] | 224 | return nil |
| 225 | end |
reed | f355df5 | 2014-10-12 12:18:40 -0700 | [diff] [blame] | 226 | canvas:translate(self.pivot_x, self.pivot_y) |
| 227 | canvas:rotate(self.angle) |
| 228 | canvas:translate(-self.pivot_x, -self.pivot_y) |
| 229 | drawSlideProc(canvas) |
reed | 09a1d67 | 2014-10-11 13:13:11 -0700 | [diff] [blame] | 230 | |
reed | f355df5 | 2014-10-12 12:18:40 -0700 | [diff] [blame] | 231 | self.angle = self.angle + self.angle_delta |
| 232 | return self |
reed | 09a1d67 | 2014-10-11 13:13:11 -0700 | [diff] [blame] | 233 | end |
| 234 | } |
| 235 | end |
| 236 | |
| 237 | function spawn_scale_animation() |
| 238 | gCurrAnimation = { |
| 239 | scale = 1, |
| 240 | scale_delta = .95, |
| 241 | scale_limit = 0.2, |
| 242 | pivot_x = 320, |
| 243 | pivot_y = 240, |
reed | f355df5 | 2014-10-12 12:18:40 -0700 | [diff] [blame] | 244 | proc = function (self, canvas, drawSlideProc) |
| 245 | if self.scale < self.scale_limit then |
| 246 | self.scale = self.scale_limit |
| 247 | self.scale_delta = 1 / self.scale_delta |
reed | 09a1d67 | 2014-10-11 13:13:11 -0700 | [diff] [blame] | 248 | end |
reed | f355df5 | 2014-10-12 12:18:40 -0700 | [diff] [blame] | 249 | if self.scale > 1 then |
| 250 | drawSlideProc(canvas) |
reed | 09a1d67 | 2014-10-11 13:13:11 -0700 | [diff] [blame] | 251 | return nil |
| 252 | end |
reed | f355df5 | 2014-10-12 12:18:40 -0700 | [diff] [blame] | 253 | canvas:translate(self.pivot_x, self.pivot_y) |
| 254 | canvas:scale(self.scale, self.scale) |
| 255 | canvas:translate(-self.pivot_x, -self.pivot_y) |
| 256 | drawSlideProc(canvas) |
reed | 09a1d67 | 2014-10-11 13:13:11 -0700 | [diff] [blame] | 257 | |
reed | f355df5 | 2014-10-12 12:18:40 -0700 | [diff] [blame] | 258 | self.scale = self.scale * self.scale_delta |
| 259 | return self |
reed | 09a1d67 | 2014-10-11 13:13:11 -0700 | [diff] [blame] | 260 | end |
| 261 | } |
| 262 | end |
| 263 | |
reed | 9fbc3f3 | 2014-10-21 07:12:58 -0700 | [diff] [blame] | 264 | local bgPaint = nil |
| 265 | |
| 266 | function draw_bg(canvas) |
| 267 | if not bgPaint then |
| 268 | bgPaint = Sk.newPaint() |
| 269 | local grad = Sk.newLinearGradient( 0, 0, { a=1, r=0, g=0, b=.3 }, |
| 270 | 640, 480, { a=1, r=0, g=0, b=.8 }) |
| 271 | bgPaint:setShader(grad) |
| 272 | end |
| 273 | |
| 274 | canvas:drawPaint(bgPaint) |
| 275 | end |
| 276 | |
reed | bdc49ae | 2014-10-14 09:34:52 -0700 | [diff] [blame] | 277 | function onDrawContent(canvas, width, height) |
| 278 | local matrix = Sk.newMatrix() |
| 279 | matrix:setRectToRect(make_rect(0, 0, 640, 480), make_rect(0, 0, width, height), "center") |
| 280 | canvas:concat(matrix) |
| 281 | |
reed | 9fbc3f3 | 2014-10-21 07:12:58 -0700 | [diff] [blame] | 282 | draw_bg(canvas) |
| 283 | |
reed | f355df5 | 2014-10-12 12:18:40 -0700 | [diff] [blame] | 284 | local drawSlideProc = function(canvas) |
reed | bdc49ae | 2014-10-14 09:34:52 -0700 | [diff] [blame] | 285 | drawSlide(canvas, gSlides[gSlideIndex], gTemplate) |
reed | 09a1d67 | 2014-10-11 13:13:11 -0700 | [diff] [blame] | 286 | end |
| 287 | |
reed | 09a1d67 | 2014-10-11 13:13:11 -0700 | [diff] [blame] | 288 | if gCurrAnimation then |
reed | f355df5 | 2014-10-12 12:18:40 -0700 | [diff] [blame] | 289 | gCurrAnimation = gCurrAnimation:proc(canvas, drawSlideProc) |
reed | 09a1d67 | 2014-10-11 13:13:11 -0700 | [diff] [blame] | 290 | return true |
| 291 | else |
reed | f355df5 | 2014-10-12 12:18:40 -0700 | [diff] [blame] | 292 | drawSlideProc(canvas) |
reed | 09a1d67 | 2014-10-11 13:13:11 -0700 | [diff] [blame] | 293 | return false |
| 294 | end |
| 295 | end |
| 296 | |
| 297 | function onClickHandler(x, y) |
| 298 | return false |
| 299 | end |
| 300 | |
| 301 | local keyProcs = { |
| 302 | n = next_slide, |
| 303 | p = prev_slide, |
| 304 | r = spawn_rotate_animation, |
| 305 | s = spawn_scale_animation, |
reed | c766398 | 2014-10-21 10:46:01 -0700 | [diff] [blame] | 306 | ["="] = function () scale_text_delta(gTemplate, 1) end, |
| 307 | ["-"] = function () scale_text_delta(gTemplate, -1) end, |
reed | 09a1d67 | 2014-10-11 13:13:11 -0700 | [diff] [blame] | 308 | } |
| 309 | |
| 310 | function onCharHandler(uni) |
| 311 | local proc = keyProcs[uni] |
| 312 | if proc then |
| 313 | proc() |
| 314 | return true |
| 315 | end |
| 316 | return false |
| 317 | end |