reed | 1b6ab44 | 2014-11-03 19:55:41 -0800 | [diff] [blame^] | 1 | gShowBounds = false |
reed | 86217d8 | 2014-10-25 20:44:40 -0700 | [diff] [blame] | 2 | |
| 3 | gPath = "/skia/trunk/resources/" |
| 4 | |
| 5 | function load_file(file) |
reed | 07dada7 | 2014-10-29 20:36:05 -0700 | [diff] [blame] | 6 | local prev_path = package.path |
reed | 86217d8 | 2014-10-25 20:44:40 -0700 | [diff] [blame] | 7 | package.path = package.path .. ";" .. gPath .. file .. ".lua" |
| 8 | require(file) |
reed | 07dada7 | 2014-10-29 20:36:05 -0700 | [diff] [blame] | 9 | package.path = prev_path |
reed | d2e7dfb | 2014-10-13 19:43:17 -0700 | [diff] [blame] | 10 | end |
| 11 | |
reed | 86217d8 | 2014-10-25 20:44:40 -0700 | [diff] [blame] | 12 | load_file("slides_utils") |
reed | d2e7dfb | 2014-10-13 19:43:17 -0700 | [diff] [blame] | 13 | |
reed | de330ff | 2014-11-02 19:19:34 -0800 | [diff] [blame] | 14 | gSlides = parse_file(io.open("/skia/trunk/resources/slides_content2.lua", "r")) |
reed | 18ea777 | 2014-10-11 11:28:07 -0700 | [diff] [blame] | 15 | |
reed | bdc49ae | 2014-10-14 09:34:52 -0700 | [diff] [blame] | 16 | function make_rect(l, t, r, b) |
| 17 | return { left = l, top = t, right = r, bottom = b } |
| 18 | end |
| 19 | |
| 20 | function make_paint(typefacename, stylebits, size, color) |
reed | 18ea777 | 2014-10-11 11:28:07 -0700 | [diff] [blame] | 21 | local paint = Sk.newPaint(); |
| 22 | paint:setAntiAlias(true) |
reed | 09a1d67 | 2014-10-11 13:13:11 -0700 | [diff] [blame] | 23 | paint:setSubpixelText(true) |
reed | bdc49ae | 2014-10-14 09:34:52 -0700 | [diff] [blame] | 24 | paint:setTypeface(Sk.newTypeface(typefacename, stylebits)) |
reed | 18ea777 | 2014-10-11 11:28:07 -0700 | [diff] [blame] | 25 | paint:setTextSize(size) |
| 26 | paint:setColor(color) |
| 27 | return paint |
| 28 | end |
| 29 | |
reed | 9e233b2 | 2014-11-03 12:18:24 -0800 | [diff] [blame] | 30 | function draw_bullet(canvas, x, y, paint, indent) |
| 31 | if 0 == indent then |
| 32 | return |
| 33 | end |
| 34 | local ps = paint:getTextSize() |
| 35 | local cx = x - ps * .8 |
| 36 | local cy = y - ps * .4 |
| 37 | local radius = ps * .2 |
| 38 | canvas:drawCircle(cx, cy, radius, paint) |
| 39 | end |
| 40 | |
reed | 1b6ab44 | 2014-11-03 19:55:41 -0800 | [diff] [blame^] | 41 | function stroke_rect(canvas, rect, color) |
| 42 | local paint = Sk.newPaint() |
| 43 | paint:setStroke(true); |
| 44 | paint:setColor(color) |
| 45 | canvas:drawRect(rect, paint) |
| 46 | end |
| 47 | |
reed | de330ff | 2014-11-02 19:19:34 -0800 | [diff] [blame] | 48 | function drawSlide(canvas, slide, master_template) |
| 49 | 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] | 50 | |
| 51 | local x = template.margin_x |
| 52 | local y = template.margin_y |
reed | 9e233b2 | 2014-11-03 12:18:24 -0800 | [diff] [blame] | 53 | local scale = 1.25 |
reed | bdc49ae | 2014-10-14 09:34:52 -0700 | [diff] [blame] | 54 | |
reed | de330ff | 2014-11-02 19:19:34 -0800 | [diff] [blame] | 55 | if slide.blockstyle == "code" then |
| 56 | local paint = master_template.codePaint |
| 57 | local fm = paint:getFontMetrics() |
| 58 | local height = #slide * (fm.descent - fm.ascent) |
| 59 | y = (480 - height) / 2 |
| 60 | for i = 1, #slide do |
| 61 | local node = slide[i] |
reed | 9e233b2 | 2014-11-03 12:18:24 -0800 | [diff] [blame] | 62 | y = y - fm.ascent * scale |
reed | de330ff | 2014-11-02 19:19:34 -0800 | [diff] [blame] | 63 | canvas:drawText(node.text, x, y, paint) |
reed | 9e233b2 | 2014-11-03 12:18:24 -0800 | [diff] [blame] | 64 | y = y + fm.descent * scale |
reed | de330ff | 2014-11-02 19:19:34 -0800 | [diff] [blame] | 65 | end |
| 66 | return |
| 67 | end |
| 68 | |
reed | d2e7dfb | 2014-10-13 19:43:17 -0700 | [diff] [blame] | 69 | for i = 1, #slide do |
| 70 | local node = slide[i] |
reed | 9fbc3f3 | 2014-10-21 07:12:58 -0700 | [diff] [blame] | 71 | local paint = template[node.indent + 1].paint |
| 72 | local extra_dy = template[node.indent + 1].extra_dy |
reed | d2e7dfb | 2014-10-13 19:43:17 -0700 | [diff] [blame] | 73 | local fm = paint:getFontMetrics() |
reed | 9e233b2 | 2014-11-03 12:18:24 -0800 | [diff] [blame] | 74 | local x_offset = -fm.ascent * node.indent * 1.25 |
reed | bdc49ae | 2014-10-14 09:34:52 -0700 | [diff] [blame] | 75 | |
reed | 1b6ab44 | 2014-11-03 19:55:41 -0800 | [diff] [blame^] | 76 | local bounds = make_rect(x + x_offset, y, 620, 640) |
| 77 | local blob, newBottom = Sk.newTextBlob(node.text, bounds, paint) |
| 78 | draw_bullet(canvas, x + x_offset, y - fm.ascent, paint, node.indent) |
| 79 | canvas:drawTextBlob(blob, 0, 0, paint) |
| 80 | y = newBottom + paint:getTextSize() * .5 |
| 81 | |
| 82 | if gShowBounds then |
| 83 | bounds.bottom = newBottom |
| 84 | stroke_rect(canvas, bounds, {a=1,r=0,g=1,b=0}) |
| 85 | stroke_rect(canvas, blob:bounds(), {a=1,r=1,g=0,b=0}) |
| 86 | end |
| 87 | |
reed | 9fbc3f3 | 2014-10-21 07:12:58 -0700 | [diff] [blame] | 88 | end |
| 89 | end |
| 90 | |
reed | 18ea777 | 2014-10-11 11:28:07 -0700 | [diff] [blame] | 91 | -------------------------------------------------------------------------------------- |
reed | 9fbc3f3 | 2014-10-21 07:12:58 -0700 | [diff] [blame] | 92 | function make_tmpl(paint, extra_dy) |
| 93 | return { paint = paint, extra_dy = extra_dy } |
| 94 | end |
reed | 18ea777 | 2014-10-11 11:28:07 -0700 | [diff] [blame] | 95 | |
reed | bdc49ae | 2014-10-14 09:34:52 -0700 | [diff] [blame] | 96 | function SkiaPoint_make_template() |
| 97 | local title = { |
| 98 | margin_x = 30, |
| 99 | margin_y = 100, |
| 100 | } |
reed | 9e233b2 | 2014-11-03 12:18:24 -0800 | [diff] [blame] | 101 | 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] | 102 | title[1]:setTextAlign("center") |
reed | 9fbc3f3 | 2014-10-21 07:12:58 -0700 | [diff] [blame] | 103 | 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] | 104 | title[2]:setTextAlign("center") |
reed | 18ea777 | 2014-10-11 11:28:07 -0700 | [diff] [blame] | 105 | |
reed | bdc49ae | 2014-10-14 09:34:52 -0700 | [diff] [blame] | 106 | local slide = { |
| 107 | margin_x = 20, |
reed | 9fbc3f3 | 2014-10-21 07:12:58 -0700 | [diff] [blame] | 108 | margin_y = 25, |
reed | bdc49ae | 2014-10-14 09:34:52 -0700 | [diff] [blame] | 109 | } |
reed | 9e233b2 | 2014-11-03 12:18:24 -0800 | [diff] [blame] | 110 | slide[1] = make_tmpl(make_paint("Arial", 1, 35, { a=1, r=1, g=1, b=1 }), 18) |
| 111 | slide[2] = make_tmpl(make_paint("Arial", 0, 25, { a=1, r=1, g=1, b=1 }), 0) |
| 112 | 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] | 113 | |
| 114 | return { |
| 115 | title = title, |
| 116 | slide = slide, |
reed | 9e233b2 | 2014-11-03 12:18:24 -0800 | [diff] [blame] | 117 | 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] | 118 | } |
| 119 | end |
| 120 | |
| 121 | gTemplate = SkiaPoint_make_template() |
reed | 18ea777 | 2014-10-11 11:28:07 -0700 | [diff] [blame] | 122 | |
| 123 | gRedPaint = Sk.newPaint() |
| 124 | gRedPaint:setAntiAlias(true) |
| 125 | gRedPaint:setColor{a=1, r=1, g=0, b=0 } |
| 126 | |
reed | 09a1d67 | 2014-10-11 13:13:11 -0700 | [diff] [blame] | 127 | -- animation.proc is passed the canvas before drawing. |
| 128 | -- The animation.proc returns itself or another animation (which means keep animating) |
| 129 | -- or it returns nil, which stops the animation. |
| 130 | -- |
| 131 | local gCurrAnimation |
| 132 | |
reed | f355df5 | 2014-10-12 12:18:40 -0700 | [diff] [blame] | 133 | gSlideIndex = 1 |
| 134 | |
reed | 96affcd | 2014-10-13 12:38:04 -0700 | [diff] [blame] | 135 | function new_drawable_picture(pic) |
| 136 | return { |
| 137 | picture = pic, |
| 138 | width = pic:width(), |
| 139 | height = pic:height(), |
| 140 | draw = function (self, canvas, x, y, paint) |
| 141 | canvas:drawPicture(self.picture, x, y, paint) |
| 142 | end |
| 143 | } |
| 144 | end |
| 145 | |
| 146 | function new_drawable_image(img) |
| 147 | return { |
| 148 | image = img, |
| 149 | width = img:width(), |
| 150 | height = img:height(), |
| 151 | draw = function (self, canvas, x, y, paint) |
| 152 | canvas:drawImage(self.image, x, y, paint) |
| 153 | end |
| 154 | } |
| 155 | end |
reed | f355df5 | 2014-10-12 12:18:40 -0700 | [diff] [blame] | 156 | |
reed | 86217d8 | 2014-10-25 20:44:40 -0700 | [diff] [blame] | 157 | function new_drawable_slide(slide) |
| 158 | return { |
| 159 | slide = slide, |
| 160 | draw = function (self, canvas, x, y, paint) |
| 161 | if (nil == paint or ("number" == type(paint) and (1 == paint))) then |
| 162 | canvas:save() |
| 163 | else |
| 164 | canvas:saveLayer(paint) |
| 165 | end |
| 166 | canvas:translate(x, y) |
| 167 | drawSlide(canvas, self.slide, gTemplate) |
| 168 | canvas:restore() |
| 169 | end |
| 170 | } |
| 171 | end |
| 172 | |
| 173 | function next_slide() |
| 174 | local prev = gSlides[gSlideIndex] |
| 175 | |
| 176 | gSlideIndex = gSlideIndex + 1 |
| 177 | if gSlideIndex > #gSlides then |
| 178 | gSlideIndex = 1 |
| 179 | end |
| 180 | |
| 181 | spawn_transition(prev, gSlides[gSlideIndex], true) |
| 182 | end |
| 183 | |
| 184 | function prev_slide() |
| 185 | local prev = gSlides[gSlideIndex] |
| 186 | |
| 187 | gSlideIndex = gSlideIndex - 1 |
| 188 | if gSlideIndex < 1 then |
| 189 | gSlideIndex = #gSlides |
| 190 | end |
| 191 | |
| 192 | spawn_transition(prev, gSlides[gSlideIndex], false) |
| 193 | end |
| 194 | |
reed | 468b181 | 2014-10-19 11:42:54 -0700 | [diff] [blame] | 195 | function convert_to_picture_drawable(slide) |
| 196 | local rec = Sk.newPictureRecorder() |
| 197 | drawSlide(rec:beginRecording(640, 480), slide, gTemplate) |
| 198 | return new_drawable_picture(rec:endRecording()) |
| 199 | end |
| 200 | |
| 201 | function convert_to_image_drawable(slide) |
| 202 | local surf = Sk.newRasterSurface(640, 480) |
| 203 | drawSlide(surf:getCanvas(), slide, gTemplate) |
| 204 | return new_drawable_image(surf:newImageSnapshot()) |
| 205 | end |
| 206 | |
reed | 86217d8 | 2014-10-25 20:44:40 -0700 | [diff] [blame] | 207 | -- gMakeDrawable = convert_to_picture_drawable |
| 208 | gMakeDrawable = new_drawable_slide |
reed | 468b181 | 2014-10-19 11:42:54 -0700 | [diff] [blame] | 209 | |
reed | 07dada7 | 2014-10-29 20:36:05 -0700 | [diff] [blame] | 210 | load_file("slides_transitions") |
| 211 | |
reed | f355df5 | 2014-10-12 12:18:40 -0700 | [diff] [blame] | 212 | function spawn_transition(prevSlide, nextSlide, is_forward) |
| 213 | local transition |
| 214 | if is_forward then |
reed | 07dada7 | 2014-10-29 20:36:05 -0700 | [diff] [blame] | 215 | transition = gTransitionTable[nextSlide.transition] |
reed | f355df5 | 2014-10-12 12:18:40 -0700 | [diff] [blame] | 216 | else |
reed | 07dada7 | 2014-10-29 20:36:05 -0700 | [diff] [blame] | 217 | transition = gTransitionTable[prevSlide.transition] |
reed | f355df5 | 2014-10-12 12:18:40 -0700 | [diff] [blame] | 218 | end |
| 219 | |
| 220 | if not transition then |
reed | d2e7dfb | 2014-10-13 19:43:17 -0700 | [diff] [blame] | 221 | transition = fade_slide_transition |
reed | f355df5 | 2014-10-12 12:18:40 -0700 | [diff] [blame] | 222 | end |
| 223 | |
reed | 468b181 | 2014-10-19 11:42:54 -0700 | [diff] [blame] | 224 | local prevDrawable = gMakeDrawable(prevSlide) |
| 225 | local nextDrawable = gMakeDrawable(nextSlide) |
reed | 96affcd | 2014-10-13 12:38:04 -0700 | [diff] [blame] | 226 | gCurrAnimation = transition(prevDrawable, nextDrawable, is_forward) |
reed | f355df5 | 2014-10-12 12:18:40 -0700 | [diff] [blame] | 227 | end |
| 228 | |
| 229 | -------------------------------------------------------------------------------------- |
| 230 | |
reed | 09a1d67 | 2014-10-11 13:13:11 -0700 | [diff] [blame] | 231 | function spawn_rotate_animation() |
| 232 | gCurrAnimation = { |
| 233 | angle = 0, |
| 234 | angle_delta = 5, |
| 235 | pivot_x = 320, |
| 236 | pivot_y = 240, |
reed | f355df5 | 2014-10-12 12:18:40 -0700 | [diff] [blame] | 237 | proc = function (self, canvas, drawSlideProc) |
| 238 | if self.angle >= 360 then |
| 239 | drawSlideProc(canvas) |
reed | 09a1d67 | 2014-10-11 13:13:11 -0700 | [diff] [blame] | 240 | return nil |
| 241 | end |
reed | f355df5 | 2014-10-12 12:18:40 -0700 | [diff] [blame] | 242 | canvas:translate(self.pivot_x, self.pivot_y) |
| 243 | canvas:rotate(self.angle) |
| 244 | canvas:translate(-self.pivot_x, -self.pivot_y) |
| 245 | drawSlideProc(canvas) |
reed | 09a1d67 | 2014-10-11 13:13:11 -0700 | [diff] [blame] | 246 | |
reed | f355df5 | 2014-10-12 12:18:40 -0700 | [diff] [blame] | 247 | self.angle = self.angle + self.angle_delta |
| 248 | return self |
reed | 09a1d67 | 2014-10-11 13:13:11 -0700 | [diff] [blame] | 249 | end |
| 250 | } |
| 251 | end |
| 252 | |
| 253 | function spawn_scale_animation() |
| 254 | gCurrAnimation = { |
| 255 | scale = 1, |
| 256 | scale_delta = .95, |
| 257 | scale_limit = 0.2, |
| 258 | pivot_x = 320, |
| 259 | pivot_y = 240, |
reed | f355df5 | 2014-10-12 12:18:40 -0700 | [diff] [blame] | 260 | proc = function (self, canvas, drawSlideProc) |
| 261 | if self.scale < self.scale_limit then |
| 262 | self.scale = self.scale_limit |
| 263 | self.scale_delta = 1 / self.scale_delta |
reed | 09a1d67 | 2014-10-11 13:13:11 -0700 | [diff] [blame] | 264 | end |
reed | f355df5 | 2014-10-12 12:18:40 -0700 | [diff] [blame] | 265 | if self.scale > 1 then |
| 266 | drawSlideProc(canvas) |
reed | 09a1d67 | 2014-10-11 13:13:11 -0700 | [diff] [blame] | 267 | return nil |
| 268 | end |
reed | f355df5 | 2014-10-12 12:18:40 -0700 | [diff] [blame] | 269 | canvas:translate(self.pivot_x, self.pivot_y) |
| 270 | canvas:scale(self.scale, self.scale) |
| 271 | canvas:translate(-self.pivot_x, -self.pivot_y) |
| 272 | drawSlideProc(canvas) |
reed | 09a1d67 | 2014-10-11 13:13:11 -0700 | [diff] [blame] | 273 | |
reed | f355df5 | 2014-10-12 12:18:40 -0700 | [diff] [blame] | 274 | self.scale = self.scale * self.scale_delta |
| 275 | return self |
reed | 09a1d67 | 2014-10-11 13:13:11 -0700 | [diff] [blame] | 276 | end |
| 277 | } |
| 278 | end |
| 279 | |
reed | 9fbc3f3 | 2014-10-21 07:12:58 -0700 | [diff] [blame] | 280 | local bgPaint = nil |
| 281 | |
| 282 | function draw_bg(canvas) |
| 283 | if not bgPaint then |
| 284 | bgPaint = Sk.newPaint() |
| 285 | local grad = Sk.newLinearGradient( 0, 0, { a=1, r=0, g=0, b=.3 }, |
| 286 | 640, 480, { a=1, r=0, g=0, b=.8 }) |
| 287 | bgPaint:setShader(grad) |
| 288 | end |
| 289 | |
| 290 | canvas:drawPaint(bgPaint) |
| 291 | end |
| 292 | |
reed | bdc49ae | 2014-10-14 09:34:52 -0700 | [diff] [blame] | 293 | function onDrawContent(canvas, width, height) |
| 294 | local matrix = Sk.newMatrix() |
| 295 | matrix:setRectToRect(make_rect(0, 0, 640, 480), make_rect(0, 0, width, height), "center") |
| 296 | canvas:concat(matrix) |
| 297 | |
reed | 9fbc3f3 | 2014-10-21 07:12:58 -0700 | [diff] [blame] | 298 | draw_bg(canvas) |
| 299 | |
reed | f355df5 | 2014-10-12 12:18:40 -0700 | [diff] [blame] | 300 | local drawSlideProc = function(canvas) |
reed | bdc49ae | 2014-10-14 09:34:52 -0700 | [diff] [blame] | 301 | drawSlide(canvas, gSlides[gSlideIndex], gTemplate) |
reed | 09a1d67 | 2014-10-11 13:13:11 -0700 | [diff] [blame] | 302 | end |
| 303 | |
reed | 09a1d67 | 2014-10-11 13:13:11 -0700 | [diff] [blame] | 304 | if gCurrAnimation then |
reed | f355df5 | 2014-10-12 12:18:40 -0700 | [diff] [blame] | 305 | gCurrAnimation = gCurrAnimation:proc(canvas, drawSlideProc) |
reed | 09a1d67 | 2014-10-11 13:13:11 -0700 | [diff] [blame] | 306 | return true |
| 307 | else |
reed | f355df5 | 2014-10-12 12:18:40 -0700 | [diff] [blame] | 308 | drawSlideProc(canvas) |
reed | 09a1d67 | 2014-10-11 13:13:11 -0700 | [diff] [blame] | 309 | return false |
| 310 | end |
| 311 | end |
| 312 | |
| 313 | function onClickHandler(x, y) |
| 314 | return false |
| 315 | end |
| 316 | |
| 317 | local keyProcs = { |
| 318 | n = next_slide, |
| 319 | p = prev_slide, |
| 320 | r = spawn_rotate_animation, |
| 321 | s = spawn_scale_animation, |
reed | c766398 | 2014-10-21 10:46:01 -0700 | [diff] [blame] | 322 | ["="] = function () scale_text_delta(gTemplate, 1) end, |
| 323 | ["-"] = function () scale_text_delta(gTemplate, -1) end, |
reed | 1b6ab44 | 2014-11-03 19:55:41 -0800 | [diff] [blame^] | 324 | |
| 325 | b = function () gShowBounds = not gShowBounds end, |
reed | 09a1d67 | 2014-10-11 13:13:11 -0700 | [diff] [blame] | 326 | } |
| 327 | |
| 328 | function onCharHandler(uni) |
| 329 | local proc = keyProcs[uni] |
| 330 | if proc then |
| 331 | proc() |
| 332 | return true |
| 333 | end |
| 334 | return false |
| 335 | end |