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| 1 // Copyright 2014 The Chromium Authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. |
| 4 |
| 5 #include "config.h" |
| 6 #include "core/css/MediaValues.h" |
| 7 |
| 8 #include "core/dom/Document.h" |
| 9 #include "core/dom/Element.h" |
| 10 #include "core/frame/FrameHost.h" |
| 11 #include "core/frame/FrameView.h" |
| 12 #include "core/frame/LocalFrame.h" |
| 13 #include "core/frame/Settings.h" |
| 14 #include "core/html/imports/HTMLImport.h" |
| 15 #include "core/page/Page.h" |
| 16 #include "core/rendering/RenderObject.h" |
| 17 #include "core/rendering/RenderView.h" |
| 18 #include "core/rendering/compositing/RenderLayerCompositor.h" |
| 19 #include "core/rendering/style/RenderStyle.h" |
| 20 #include "platform/PlatformScreen.h" |
| 21 |
| 22 namespace WebCore { |
| 23 |
| 24 static int calculateViewportWidth(LocalFrame* frame, RenderStyle* style) |
| 25 { |
| 26 ASSERT(frame && frame->view() && style); |
| 27 int viewportWidth = frame->view()->layoutSize(IncludeScrollbars).width(); |
| 28 return adjustForAbsoluteZoom(viewportWidth, style); |
| 29 } |
| 30 |
| 31 static int calculateViewportHeight(LocalFrame* frame, RenderStyle* style) |
| 32 { |
| 33 ASSERT(frame && frame->view() && style); |
| 34 int viewportHeight = frame->view()->layoutSize(IncludeScrollbars).height(); |
| 35 return adjustForAbsoluteZoom(viewportHeight, style); |
| 36 } |
| 37 |
| 38 static int calculateDeviceWidth(LocalFrame* frame) |
| 39 { |
| 40 ASSERT(frame && frame->view() && frame->settings() && frame->host()); |
| 41 int deviceWidth = static_cast<int>(screenRect(frame->view()).width()); |
| 42 if (frame->settings()->reportScreenSizeInPhysicalPixelsQuirk()) |
| 43 deviceWidth = lroundf(deviceWidth * frame->host()->deviceScaleFactor()); |
| 44 return deviceWidth; |
| 45 } |
| 46 |
| 47 static int calculateDeviceHeight(LocalFrame* frame) |
| 48 { |
| 49 ASSERT(frame && frame->view() && frame->settings() && frame->host()); |
| 50 int deviceHeight = static_cast<int>(screenRect(frame->view()).height()); |
| 51 if (frame->settings()->reportScreenSizeInPhysicalPixelsQuirk()) |
| 52 deviceHeight = lroundf(deviceHeight * frame->host()->deviceScaleFactor()
); |
| 53 return deviceHeight; |
| 54 } |
| 55 |
| 56 static bool calculateStrictMode(LocalFrame* frame) |
| 57 { |
| 58 ASSERT(frame && frame->document()); |
| 59 return !frame->document()->inQuirksMode(); |
| 60 } |
| 61 |
| 62 static float calculateDevicePixelRatio(LocalFrame* frame) |
| 63 { |
| 64 return frame->devicePixelRatio(); |
| 65 } |
| 66 |
| 67 static int calculateColorBitsPerComponent(LocalFrame* frame) |
| 68 { |
| 69 ASSERT(frame && frame->page() && frame->page()->mainFrame()); |
| 70 if (screenIsMonochrome(frame->page()->mainFrame()->view())) |
| 71 return 0; |
| 72 return screenDepthPerComponent(frame->view()); |
| 73 } |
| 74 |
| 75 static int calculateMonochromeBitsPerComponent(LocalFrame* frame) |
| 76 { |
| 77 ASSERT(frame && frame->page() && frame->page()->mainFrame()); |
| 78 if (screenIsMonochrome(frame->page()->mainFrame()->view())) |
| 79 return screenDepthPerComponent(frame->view()); |
| 80 return 0; |
| 81 } |
| 82 |
| 83 static int calculateDefaultFontSize(RenderStyle* style) |
| 84 { |
| 85 return style->fontDescription().specifiedSize(); |
| 86 } |
| 87 |
| 88 static bool calculateScanMediaType(LocalFrame* frame) |
| 89 { |
| 90 ASSERT(frame && frame->view()); |
| 91 // Scan only applies to 'tv' media. |
| 92 return equalIgnoringCase(frame->view()->mediaType(), "tv"); |
| 93 } |
| 94 |
| 95 static bool calculateScreenMediaType(LocalFrame* frame) |
| 96 { |
| 97 ASSERT(frame && frame->view()); |
| 98 return equalIgnoringCase(frame->view()->mediaType(), "screen"); |
| 99 } |
| 100 |
| 101 static bool calculatePrintMediaType(LocalFrame* frame) |
| 102 { |
| 103 ASSERT(frame && frame->view()); |
| 104 return equalIgnoringCase(frame->view()->mediaType(), "print"); |
| 105 } |
| 106 |
| 107 static bool calculateThreeDEnabled(LocalFrame* frame) |
| 108 { |
| 109 ASSERT(frame && frame->contentRenderer() && frame->contentRenderer()->compos
itor()); |
| 110 bool threeDEnabled = false; |
| 111 if (RenderView* view = frame->contentRenderer()) |
| 112 threeDEnabled = view->compositor()->canRender3DTransforms(); |
| 113 return threeDEnabled; |
| 114 } |
| 115 |
| 116 static MediaValues::PointerDeviceType calculateLeastCapablePrimaryPointerDeviceT
ype(LocalFrame* frame) |
| 117 { |
| 118 ASSERT(frame && frame->settings()); |
| 119 if (frame->settings()->deviceSupportsTouch()) |
| 120 return MediaValues::TouchPointer; |
| 121 |
| 122 // FIXME: We should also try to determine if we know we have a mouse. |
| 123 // When we do this, we'll also need to differentiate between known not to |
| 124 // have mouse or touch screen (NoPointer) and unknown (UnknownPointer). |
| 125 // We could also take into account other preferences like accessibility |
| 126 // settings to decide which of the available pointers should be considered |
| 127 // "primary". |
| 128 |
| 129 return MediaValues::UnknownPointer; |
| 130 } |
| 131 |
| 132 PassRefPtr<MediaValues> MediaValues::create(MediaValuesMode mode, |
| 133 int viewportWidth, |
| 134 int viewportHeight, |
| 135 int deviceWidth, |
| 136 int deviceHeight, |
| 137 float devicePixelRatio, |
| 138 int colorBitsPerComponent, |
| 139 int monochromeBitsPerComponent, |
| 140 PointerDeviceType pointer, |
| 141 int defaultFontSize, |
| 142 bool threeDEnabled, |
| 143 bool scanMediaType, |
| 144 bool screenMediaType, |
| 145 bool printMediaType, |
| 146 bool strictMode) |
| 147 { |
| 148 ASSERT(mode == CachingMode); |
| 149 RefPtr<MediaValues> mediaValues = adoptRef(new MediaValues(0, nullptr, mode)
); |
| 150 mediaValues->m_viewportWidth = viewportWidth; |
| 151 mediaValues->m_viewportHeight = viewportHeight; |
| 152 mediaValues->m_deviceWidth = deviceWidth; |
| 153 mediaValues->m_deviceHeight = deviceHeight; |
| 154 mediaValues->m_devicePixelRatio = devicePixelRatio; |
| 155 mediaValues->m_colorBitsPerComponent = colorBitsPerComponent; |
| 156 mediaValues->m_monochromeBitsPerComponent = monochromeBitsPerComponent; |
| 157 mediaValues->m_pointer = pointer; |
| 158 mediaValues->m_defaultFontSize = defaultFontSize; |
| 159 mediaValues->m_threeDEnabled = threeDEnabled; |
| 160 mediaValues->m_scanMediaType = scanMediaType; |
| 161 mediaValues->m_screenMediaType = screenMediaType; |
| 162 mediaValues->m_printMediaType = printMediaType; |
| 163 mediaValues->m_strictMode = strictMode; |
| 164 |
| 165 return mediaValues; |
| 166 } |
| 167 |
| 168 PassRefPtr<MediaValues> MediaValues::create(LocalFrame* frame, RenderStyle* styl
e, MediaValuesMode mode) |
| 169 { |
| 170 ASSERT(frame && style); |
| 171 RefPtr<MediaValues> mediaValues; |
| 172 mediaValues = adoptRef(new MediaValues(frame, style, mode)); |
| 173 if (mode == CachingMode) { |
| 174 mediaValues->m_viewportWidth = calculateViewportWidth(frame, style); |
| 175 mediaValues->m_viewportHeight = calculateViewportHeight(frame, style), |
| 176 mediaValues->m_deviceWidth = calculateDeviceWidth(frame), |
| 177 mediaValues->m_deviceHeight = calculateDeviceHeight(frame), |
| 178 mediaValues->m_devicePixelRatio = calculateDevicePixelRatio(frame), |
| 179 mediaValues->m_colorBitsPerComponent = calculateColorBitsPerComponent(fr
ame), |
| 180 mediaValues->m_monochromeBitsPerComponent = calculateMonochromeBitsPerCo
mponent(frame), |
| 181 mediaValues->m_pointer = calculateLeastCapablePrimaryPointerDeviceType(f
rame), |
| 182 mediaValues->m_defaultFontSize = calculateDefaultFontSize(style), |
| 183 mediaValues->m_threeDEnabled = calculateThreeDEnabled(frame), |
| 184 mediaValues->m_scanMediaType = calculateScanMediaType(frame), |
| 185 mediaValues->m_screenMediaType = calculateScreenMediaType(frame), |
| 186 mediaValues->m_printMediaType = calculatePrintMediaType(frame), |
| 187 mediaValues->m_strictMode = calculateStrictMode(frame); |
| 188 |
| 189 mediaValues->m_style.clear(); |
| 190 mediaValues->m_frame = 0; |
| 191 } |
| 192 |
| 193 return mediaValues; |
| 194 } |
| 195 |
| 196 PassRefPtr<MediaValues> MediaValues::create(Document* document, MediaValuesMode
mode) |
| 197 { |
| 198 ASSERT(document); |
| 199 Document* executingDocument = document->import() ? document->import()->maste
r() : document; |
| 200 ASSERT(executingDocument->frame()); |
| 201 ASSERT(executingDocument->renderer()); |
| 202 ASSERT(executingDocument->renderer()->style()); |
| 203 LocalFrame* frame = executingDocument->frame(); |
| 204 RenderStyle* style = executingDocument->renderer()->style(); |
| 205 |
| 206 return MediaValues::create(frame, style, mode); |
| 207 } |
| 208 |
| 209 PassRefPtr<MediaValues> MediaValues::copy() const |
| 210 { |
| 211 ASSERT(m_mode == CachingMode && !m_style.get() && !m_frame); |
| 212 RefPtr<MediaValues> mediaValues = adoptRef(new MediaValues(0, nullptr, m_mod
e)); |
| 213 mediaValues->m_viewportWidth = m_viewportWidth; |
| 214 mediaValues->m_viewportHeight = m_viewportHeight; |
| 215 mediaValues->m_deviceWidth = m_deviceWidth; |
| 216 mediaValues->m_deviceHeight = m_deviceHeight; |
| 217 mediaValues->m_devicePixelRatio = m_devicePixelRatio; |
| 218 mediaValues->m_colorBitsPerComponent = m_colorBitsPerComponent; |
| 219 mediaValues->m_monochromeBitsPerComponent = m_monochromeBitsPerComponent; |
| 220 mediaValues->m_pointer = m_pointer; |
| 221 mediaValues->m_defaultFontSize = m_defaultFontSize; |
| 222 mediaValues->m_threeDEnabled = m_threeDEnabled; |
| 223 mediaValues->m_scanMediaType = m_scanMediaType; |
| 224 mediaValues->m_screenMediaType = m_screenMediaType; |
| 225 mediaValues->m_printMediaType = m_printMediaType; |
| 226 mediaValues->m_strictMode = m_strictMode; |
| 227 |
| 228 return mediaValues; |
| 229 } |
| 230 |
| 231 bool MediaValues::isSafeToSendToAnotherThread() const |
| 232 { |
| 233 return (!m_frame && !m_style && m_mode == CachingMode && hasOneRef()); |
| 234 } |
| 235 |
| 236 int MediaValues::viewportWidth() const |
| 237 { |
| 238 if (m_mode == DynamicMode) |
| 239 return calculateViewportWidth(m_frame, m_style.get()); |
| 240 return m_viewportWidth; |
| 241 } |
| 242 |
| 243 int MediaValues::viewportHeight() const |
| 244 { |
| 245 if (m_mode == DynamicMode) |
| 246 return calculateViewportHeight(m_frame, m_style.get()); |
| 247 return m_viewportHeight; |
| 248 } |
| 249 |
| 250 int MediaValues::deviceWidth() const |
| 251 { |
| 252 if (m_mode == DynamicMode) |
| 253 return calculateDeviceWidth(m_frame); |
| 254 return m_deviceWidth; |
| 255 } |
| 256 |
| 257 int MediaValues::deviceHeight() const |
| 258 { |
| 259 if (m_mode == DynamicMode) |
| 260 return calculateDeviceHeight(m_frame); |
| 261 return m_deviceHeight; |
| 262 } |
| 263 |
| 264 float MediaValues::devicePixelRatio() const |
| 265 { |
| 266 if (m_mode == DynamicMode) |
| 267 return calculateDevicePixelRatio(m_frame); |
| 268 return m_devicePixelRatio; |
| 269 } |
| 270 |
| 271 int MediaValues::colorBitsPerComponent() const |
| 272 { |
| 273 if (m_mode == DynamicMode) |
| 274 return calculateColorBitsPerComponent(m_frame); |
| 275 return m_colorBitsPerComponent; |
| 276 } |
| 277 |
| 278 int MediaValues::monochromeBitsPerComponent() const |
| 279 { |
| 280 if (m_mode == DynamicMode) |
| 281 return calculateMonochromeBitsPerComponent(m_frame); |
| 282 return m_monochromeBitsPerComponent; |
| 283 } |
| 284 |
| 285 MediaValues::PointerDeviceType MediaValues::pointer() const |
| 286 { |
| 287 if (m_mode == DynamicMode) |
| 288 return calculateLeastCapablePrimaryPointerDeviceType(m_frame); |
| 289 return m_pointer; |
| 290 } |
| 291 |
| 292 int MediaValues::defaultFontSize() const |
| 293 { |
| 294 if (m_mode == DynamicMode) |
| 295 return calculateDefaultFontSize(m_style.get()); |
| 296 return m_defaultFontSize; |
| 297 } |
| 298 |
| 299 bool MediaValues::threeDEnabled() const |
| 300 { |
| 301 if (m_mode == DynamicMode) |
| 302 return calculateThreeDEnabled(m_frame); |
| 303 return m_threeDEnabled; |
| 304 } |
| 305 |
| 306 bool MediaValues::scanMediaType() const |
| 307 { |
| 308 if (m_mode == DynamicMode) |
| 309 return calculateScanMediaType(m_frame); |
| 310 return m_scanMediaType; |
| 311 } |
| 312 |
| 313 bool MediaValues::screenMediaType() const |
| 314 { |
| 315 if (m_mode == DynamicMode) |
| 316 return calculateScreenMediaType(m_frame); |
| 317 return m_screenMediaType; |
| 318 } |
| 319 |
| 320 bool MediaValues::printMediaType() const |
| 321 { |
| 322 if (m_mode == DynamicMode) |
| 323 return calculatePrintMediaType(m_frame); |
| 324 return m_printMediaType; |
| 325 } |
| 326 |
| 327 bool MediaValues::strictMode() const |
| 328 { |
| 329 if (m_mode == DynamicMode) |
| 330 return calculateStrictMode(m_frame); |
| 331 return m_strictMode; |
| 332 } |
| 333 |
| 334 Document* MediaValues::document() const |
| 335 { |
| 336 if (!m_frame) |
| 337 return 0; |
| 338 return m_frame->document(); |
| 339 } |
| 340 |
| 341 } // namespace |
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