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1 /* | 1 /* |
2 * Copyright (C) 2006, 2007, 2008, 2010 Apple Inc. All rights reserved. | 2 * Copyright (C) 2006, 2007, 2008, 2010 Apple Inc. All rights reserved. |
3 * | 3 * |
4 * Redistribution and use in source and binary forms, with or without | 4 * Redistribution and use in source and binary forms, with or without |
5 * modification, are permitted provided that the following conditions | 5 * modification, are permitted provided that the following conditions |
6 * are met: | 6 * are met: |
7 * 1. Redistributions of source code must retain the above copyright | 7 * 1. Redistributions of source code must retain the above copyright |
8 * notice, this list of conditions and the following disclaimer. | 8 * notice, this list of conditions and the following disclaimer. |
9 * 2. Redistributions in binary form must reproduce the above copyright | 9 * 2. Redistributions in binary form must reproduce the above copyright |
10 * notice, this list of conditions and the following disclaimer in the | 10 * notice, this list of conditions and the following disclaimer in the |
11 * documentation and/or other materials provided with the distribution. | 11 * documentation and/or other materials provided with the distribution. |
12 * | 12 * |
13 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY | 13 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY |
14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | 14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR | 15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR | 16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR |
17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, | 17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, | 18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
19 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY | 19 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY |
20 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | 20 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
21 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | 21 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
22 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | 22 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
23 */ | 23 */ |
24 | 24 |
25 #include "core/html/ImageDocument.h" | 25 #include "core/html/ImageDocument.h" |
26 | 26 |
27 #include "bindings/core/v8/ExceptionStatePlaceholder.h" | 27 #include "bindings/core/v8/ExceptionStatePlaceholder.h" |
28 #include "core/HTMLNames.h" | 28 #include "core/HTMLNames.h" |
29 #include "core/dom/ExecutionContextTask.h" | |
29 #include "core/dom/RawDataDocumentParser.h" | 30 #include "core/dom/RawDataDocumentParser.h" |
30 #include "core/events/EventListener.h" | 31 #include "core/events/EventListener.h" |
31 #include "core/events/MouseEvent.h" | 32 #include "core/events/MouseEvent.h" |
32 #include "core/fetch/ImageResource.h" | 33 #include "core/fetch/ImageResource.h" |
33 #include "core/frame/FrameHost.h" | 34 #include "core/frame/FrameHost.h" |
34 #include "core/frame/FrameView.h" | 35 #include "core/frame/FrameView.h" |
35 #include "core/frame/LocalDOMWindow.h" | 36 #include "core/frame/LocalDOMWindow.h" |
36 #include "core/frame/LocalFrame.h" | 37 #include "core/frame/LocalFrame.h" |
37 #include "core/frame/Settings.h" | 38 #include "core/frame/Settings.h" |
38 #include "core/frame/UseCounter.h" | 39 #include "core/frame/UseCounter.h" |
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165 String fileName = | 166 String fileName = |
166 decodeURLEscapeSequences(document()->url().lastPathComponent()); | 167 decodeURLEscapeSequences(document()->url().lastPathComponent()); |
167 if (fileName.isEmpty()) | 168 if (fileName.isEmpty()) |
168 fileName = document()->url().host(); | 169 fileName = document()->url().host(); |
169 document()->setTitle(imageTitle(fileName, size)); | 170 document()->setTitle(imageTitle(fileName, size)); |
170 if (isDetached()) | 171 if (isDetached()) |
171 return; | 172 return; |
172 } | 173 } |
173 | 174 |
174 document()->imageUpdated(); | 175 document()->imageUpdated(); |
176 document()->imageLoaded(); | |
175 } | 177 } |
176 | 178 |
177 if (!isDetached()) | 179 if (!isDetached()) |
178 document()->finishedParsing(); | 180 document()->finishedParsing(); |
179 } | 181 } |
180 | 182 |
181 // -------- | 183 // -------- |
182 | 184 |
183 ImageDocument::ImageDocument(const DocumentInit& initializer) | 185 ImageDocument::ImageDocument(const DocumentInit& initializer) |
184 : HTMLDocument(initializer, ImageDocumentClass), | 186 : HTMLDocument(initializer, ImageDocumentClass), |
185 m_divElement(nullptr), | 187 m_divElement(nullptr), |
186 m_imageElement(nullptr), | 188 m_imageElement(nullptr), |
187 m_imageSizeIsKnown(false), | 189 m_imageSizeIsKnown(false), |
188 m_didShrinkImage(false), | 190 m_didShrinkImage(false), |
189 m_shouldShrinkImage(shouldShrinkToFit()), | 191 m_shouldShrinkImage(shouldShrinkToFit()), |
192 m_imageIsLoaded(false), | |
190 m_shrinkToFitMode(frame()->settings()->viewportEnabled() ? Viewport | 193 m_shrinkToFitMode(frame()->settings()->viewportEnabled() ? Viewport |
191 : Desktop) { | 194 : Desktop) { |
192 setCompatibilityMode(QuirksMode); | 195 setCompatibilityMode(QuirksMode); |
193 lockCompatibilityMode(); | 196 lockCompatibilityMode(); |
194 UseCounter::count(*this, UseCounter::ImageDocument); | 197 UseCounter::count(*this, UseCounter::ImageDocument); |
195 if (!isInMainFrame()) | 198 if (!isInMainFrame()) |
196 UseCounter::count(*this, UseCounter::ImageDocumentInFrame); | 199 UseCounter::count(*this, UseCounter::ImageDocumentInFrame); |
197 } | 200 } |
198 | 201 |
199 DocumentParser* ImageDocument::createParser() { | 202 DocumentParser* ImageDocument::createParser() { |
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211 HTMLHeadElement* head = HTMLHeadElement::create(*this); | 214 HTMLHeadElement* head = HTMLHeadElement::create(*this); |
212 HTMLMetaElement* meta = HTMLMetaElement::create(*this); | 215 HTMLMetaElement* meta = HTMLMetaElement::create(*this); |
213 meta->setAttribute(nameAttr, "viewport"); | 216 meta->setAttribute(nameAttr, "viewport"); |
214 meta->setAttribute(contentAttr, "width=device-width, minimum-scale=0.1"); | 217 meta->setAttribute(contentAttr, "width=device-width, minimum-scale=0.1"); |
215 head->appendChild(meta); | 218 head->appendChild(meta); |
216 | 219 |
217 HTMLBodyElement* body = HTMLBodyElement::create(*this); | 220 HTMLBodyElement* body = HTMLBodyElement::create(*this); |
218 | 221 |
219 if (shouldShrinkToFit()) { | 222 if (shouldShrinkToFit()) { |
220 // Display the image prominently centered in the frame. | 223 // Display the image prominently centered in the frame. |
221 body->setAttribute(styleAttr, "margin: 0px;"); | 224 body->setAttribute(styleAttr, "margin: 0px; background: #0e0e0e;"); |
222 | 225 |
223 // See w3c example on how to centering an element: | 226 // See w3c example on how to center an element: |
224 // https://www.w3.org/Style/Examples/007/center.en.html | 227 // https://www.w3.org/Style/Examples/007/center.en.html |
225 m_divElement = HTMLDivElement::create(*this); | 228 m_divElement = HTMLDivElement::create(*this); |
226 m_divElement->setAttribute(styleAttr, | 229 m_divElement->setAttribute(styleAttr, |
227 "display: flex;" | 230 "display: flex;" |
228 "flex-direction: column;" | 231 "flex-direction: column;" |
229 "justify-content: center;" | 232 "justify-content: center;" |
230 "align-items: center;" | 233 "align-items: center;" |
231 "min-height: min-content;" | 234 "min-height: min-content;" |
232 "min-width: min-content;" | 235 "min-width: min-content;" |
233 "height: 100%;" | 236 "height: 100%;" |
234 "width: 100%;"); | 237 "width: 100%;"); |
235 HTMLContentElement* content = HTMLContentElement::create(*this); | 238 HTMLContentElement* content = HTMLContentElement::create(*this); |
236 m_divElement->appendChild(content); | 239 m_divElement->appendChild(content); |
237 | 240 |
238 ShadowRoot& shadowRoot = body->ensureUserAgentShadowRoot(); | 241 ShadowRoot& shadowRoot = body->ensureUserAgentShadowRoot(); |
239 shadowRoot.appendChild(m_divElement); | 242 shadowRoot.appendChild(m_divElement); |
240 } else { | 243 } else { |
241 body->setAttribute(styleAttr, "margin: 0px;"); | 244 body->setAttribute(styleAttr, "margin: 0px;"); |
242 } | 245 } |
243 | 246 |
244 willInsertBody(); | 247 willInsertBody(); |
245 | 248 |
246 StringBuilder imageStyle; | |
247 imageStyle.append("-webkit-user-select: none;"); | |
248 if (shouldShrinkToFit() && m_shrinkToFitMode == Viewport) | |
249 imageStyle.append("max-width: 100%"); | |
250 m_imageElement = HTMLImageElement::create(*this); | 249 m_imageElement = HTMLImageElement::create(*this); |
251 m_imageElement->setAttribute(styleAttr, imageStyle.toAtomicString()); | 250 updateImageStyle(); |
252 m_imageElement->setLoadingImageDocument(); | 251 m_imageElement->setLoadingImageDocument(); |
253 m_imageElement->setSrc(url().getString()); | 252 m_imageElement->setSrc(url().getString()); |
254 body->appendChild(m_imageElement.get()); | 253 body->appendChild(m_imageElement.get()); |
255 if (loader() && m_imageElement->cachedImage()) | 254 if (loader() && m_imageElement->cachedImage()) |
256 m_imageElement->cachedImage()->responseReceived(loader()->response(), | 255 m_imageElement->cachedImage()->responseReceived(loader()->response(), |
257 nullptr); | 256 nullptr); |
258 | 257 |
259 if (shouldShrinkToFit()) { | 258 if (shouldShrinkToFit()) { |
260 // Add event listeners | 259 // Add event listeners |
261 EventListener* listener = ImageEventListener::create(this); | 260 EventListener* listener = ImageEventListener::create(this); |
262 if (LocalDOMWindow* domWindow = this->domWindow()) | 261 if (LocalDOMWindow* domWindow = this->domWindow()) |
263 domWindow->addEventListener("resize", listener, false); | 262 domWindow->addEventListener(EventTypeNames::resize, listener, false); |
264 if (m_shrinkToFitMode == Desktop) | 263 |
265 m_imageElement->addEventListener("click", listener, false); | 264 if (m_shrinkToFitMode == Desktop) { |
265 m_imageElement->addEventListener(EventTypeNames::click, listener, false); | |
266 } else if (m_shrinkToFitMode == Viewport) { | |
267 m_imageElement->addEventListener(EventTypeNames::touchend, listener, | |
268 false); | |
269 m_imageElement->addEventListener(EventTypeNames::touchcancel, listener, | |
270 false); | |
271 } | |
266 } | 272 } |
267 | 273 |
268 rootElement->appendChild(head); | 274 rootElement->appendChild(head); |
269 rootElement->appendChild(body); | 275 rootElement->appendChild(body); |
270 } | 276 } |
271 | 277 |
272 float ImageDocument::scale() const { | 278 float ImageDocument::scale() const { |
273 DCHECK_EQ(m_shrinkToFitMode, Desktop); | 279 DCHECK_EQ(m_shrinkToFitMode, Desktop); |
274 if (!m_imageElement || m_imageElement->document() != this) | 280 if (!m_imageElement || m_imageElement->document() != this) |
275 return 1.0f; | 281 return 1.0f; |
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339 float scrollX = | 345 float scrollX = |
340 imageX / scale - static_cast<float>(frame()->view()->width()) / 2; | 346 imageX / scale - static_cast<float>(frame()->view()->width()) / 2; |
341 float scrollY = | 347 float scrollY = |
342 imageY / scale - static_cast<float>(frame()->view()->height()) / 2; | 348 imageY / scale - static_cast<float>(frame()->view()->height()) / 2; |
343 | 349 |
344 frame()->view()->layoutViewportScrollableArea()->setScrollOffset( | 350 frame()->view()->layoutViewportScrollableArea()->setScrollOffset( |
345 ScrollOffset(scrollX, scrollY), ProgrammaticScroll); | 351 ScrollOffset(scrollX, scrollY), ProgrammaticScroll); |
346 } | 352 } |
347 } | 353 } |
348 | 354 |
355 static void updateDocumentImageStyle(ExecutionContext* context) { | |
356 // Shouldn't be anything except an ImageDocument if |context| is a Document. | |
357 ImageDocument* document = static_cast<ImageDocument*>(toDocument(context)); | |
358 document->updateImageStyle(); | |
359 } | |
360 | |
361 void ImageDocument::imageLoaded() { | |
362 m_imageIsLoaded = true; | |
363 postTask(BLINK_FROM_HERE, createSameThreadTask(&updateDocumentImageStyle), | |
pdr.
2016/11/01 06:54:56
This seems reasonable to me if we don't have anoth
gone
2016/11/02 18:42:20
Got rid of the task and tried looking at more flag
| |
364 "updateImageStyle"); | |
365 } | |
366 | |
367 void ImageDocument::updateImageStyle() { | |
368 StringBuilder imageStyle; | |
pdr.
2016/11/01 06:54:56
Because this is called on every touch end/cancel e
gone
2016/11/02 18:42:20
WDYT about this version, where I compare the two s
| |
369 imageStyle.append("-webkit-user-select: none;"); | |
370 if (shouldShrinkToFit()) { | |
371 if (m_shrinkToFitMode == Viewport) { | |
372 imageStyle.append("max-width: 100%;"); | |
373 } | |
374 | |
375 // Once the image has fully loaded, it is displayed atop a checkerboard to | |
376 // show transparency more faithfully. The pattern is generated via CSS. | |
377 if (m_imageIsLoaded) { | |
378 // The base square size is set to 10 because it rounds nicely for both the | |
379 // minimum scale (0.1) and maximum scale (5.0). | |
380 double checkerSize = 10.0; | |
381 | |
382 if (m_shrinkToFitMode == Viewport) { | |
383 // To ensure the checker pattern is visible for large images in | |
384 // viewports, the checker size must be dynamically adjusted to account | |
385 // for how much the page is currently being scaled. | |
386 double scale = frame()->host()->visualViewport().scale(); | |
387 checkerSize = std::max(1.0, checkerSize / scale); | |
388 } | |
389 | |
390 int roundedSize = static_cast<int>(round(checkerSize)); | |
391 int tileSize = roundedSize * 2; | |
392 | |
393 imageStyle.append("background-position: 0px 0px, "); | |
394 imageStyle.append(AtomicString::number(roundedSize)); | |
395 imageStyle.append("px "); | |
396 imageStyle.append(AtomicString::number(roundedSize)); | |
397 imageStyle.append("px;"); | |
398 | |
399 imageStyle.append("background-size: "); | |
400 imageStyle.append(AtomicString::number(tileSize)); | |
401 imageStyle.append("px "); | |
402 imageStyle.append(AtomicString::number(tileSize)); | |
403 imageStyle.append("px;"); | |
404 | |
405 imageStyle.append( | |
406 "background-color: white;" | |
407 "background-image:" | |
408 "linear-gradient(45deg, #eee 25%, transparent 25%, transparent 75%, " | |
409 "#eee 75%, #eee 100%)," | |
410 "linear-gradient(45deg, #eee 25%, transparent 25%, transparent 75%, " | |
411 "#eee 75%, #eee 100%);"); | |
412 } | |
413 } | |
414 | |
415 m_imageElement->setAttribute(styleAttr, imageStyle.toAtomicString()); | |
416 } | |
417 | |
349 void ImageDocument::imageUpdated() { | 418 void ImageDocument::imageUpdated() { |
350 DCHECK(m_imageElement); | 419 DCHECK(m_imageElement); |
351 | 420 |
352 if (m_imageSizeIsKnown) | 421 if (m_imageSizeIsKnown) |
353 return; | 422 return; |
354 | 423 |
355 updateStyleAndLayoutTree(); | 424 updateStyleAndLayoutTree(); |
356 if (!m_imageElement->cachedImage() || | 425 if (!m_imageElement->cachedImage() || |
357 m_imageElement->cachedImage() | 426 m_imageElement->cachedImage() |
358 ->imageSize(LayoutObject::shouldRespectImageOrientation( | 427 ->imageSize(LayoutObject::shouldRespectImageOrientation( |
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423 // screen when the scale is minimum. | 492 // screen when the scale is minimum. |
424 int maxWidth = std::min(imageSize.width().toInt(), viewportWidth * 10); | 493 int maxWidth = std::min(imageSize.width().toInt(), viewportWidth * 10); |
425 int divWidth = std::max(viewportWidth, maxWidth); | 494 int divWidth = std::max(viewportWidth, maxWidth); |
426 m_divElement->setInlineStyleProperty(CSSPropertyWidth, divWidth, | 495 m_divElement->setInlineStyleProperty(CSSPropertyWidth, divWidth, |
427 CSSPrimitiveValue::UnitType::Pixels); | 496 CSSPrimitiveValue::UnitType::Pixels); |
428 | 497 |
429 // Explicitly set the height of the <div> containing the <img> so that it | 498 // Explicitly set the height of the <div> containing the <img> so that it |
430 // can display the full image without shrinking it, allowing a full-width | 499 // can display the full image without shrinking it, allowing a full-width |
431 // reading mode for normal-width-huge-height images. | 500 // reading mode for normal-width-huge-height images. |
432 int divHeight = std::max(imageSize.height().toInt(), | 501 int divHeight = std::max(imageSize.height().toInt(), |
433 (int)(divWidth / viewportAspectRatio)); | 502 static_cast<int>(divWidth / viewportAspectRatio)); |
434 m_divElement->setInlineStyleProperty(CSSPropertyHeight, divHeight, | 503 m_divElement->setInlineStyleProperty(CSSPropertyHeight, divHeight, |
435 CSSPrimitiveValue::UnitType::Pixels); | 504 CSSPrimitiveValue::UnitType::Pixels); |
505 updateImageStyle(); | |
436 return; | 506 return; |
437 } | 507 } |
438 | 508 |
439 bool fitsInWindow = imageFitsInWindow(); | 509 bool fitsInWindow = imageFitsInWindow(); |
440 | 510 |
441 // If the image has been explicitly zoomed in, restore the cursor if the image | 511 // If the image has been explicitly zoomed in, restore the cursor if the image |
442 // fits and set it to a zoom out cursor if the image doesn't fit | 512 // fits and set it to a zoom out cursor if the image doesn't fit |
443 if (!m_shouldShrinkImage) { | 513 if (!m_shouldShrinkImage) { |
444 if (fitsInWindow) | 514 if (fitsInWindow) |
445 m_imageElement->removeInlineStyleProperty(CSSPropertyCursor); | 515 m_imageElement->removeInlineStyleProperty(CSSPropertyCursor); |
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488 } | 558 } |
489 | 559 |
490 // -------- | 560 // -------- |
491 | 561 |
492 void ImageEventListener::handleEvent(ExecutionContext*, Event* event) { | 562 void ImageEventListener::handleEvent(ExecutionContext*, Event* event) { |
493 if (event->type() == EventTypeNames::resize) { | 563 if (event->type() == EventTypeNames::resize) { |
494 m_doc->windowSizeChanged(); | 564 m_doc->windowSizeChanged(); |
495 } else if (event->type() == EventTypeNames::click && event->isMouseEvent()) { | 565 } else if (event->type() == EventTypeNames::click && event->isMouseEvent()) { |
496 MouseEvent* mouseEvent = toMouseEvent(event); | 566 MouseEvent* mouseEvent = toMouseEvent(event); |
497 m_doc->imageClicked(mouseEvent->x(), mouseEvent->y()); | 567 m_doc->imageClicked(mouseEvent->x(), mouseEvent->y()); |
568 } else if (event->isTouchEvent()) { | |
569 m_doc->updateImageStyle(); | |
498 } | 570 } |
499 } | 571 } |
500 | 572 |
501 bool ImageEventListener::operator==(const EventListener& listener) const { | 573 bool ImageEventListener::operator==(const EventListener& listener) const { |
502 if (const ImageEventListener* imageEventListener = | 574 if (const ImageEventListener* imageEventListener = |
503 ImageEventListener::cast(&listener)) | 575 ImageEventListener::cast(&listener)) |
504 return m_doc == imageEventListener->m_doc; | 576 return m_doc == imageEventListener->m_doc; |
505 return false; | 577 return false; |
506 } | 578 } |
507 | 579 |
508 } // namespace blink | 580 } // namespace blink |
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