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1 // Copyright (c) 2013 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2013 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 package org.chromium.content.browser; | 5 package org.chromium.content.browser; |
6 | 6 |
7 /** | 7 /** |
8 * Cached copy of all positions and scales (CSS-to-DIP-to-physical pixels) | 8 * Cached copy of all positions and scales (CSS-to-DIP-to-physical pixels) |
9 * reported from the renderer. | 9 * reported from the renderer. |
10 * Provides wrappers and a utility class to help with coordinate transforms on t
he client side. | 10 * Provides wrappers and a utility class to help with coordinate transforms on t
he client side. |
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259 * @return Maximum page scale factor to be used with the content. | 259 * @return Maximum page scale factor to be used with the content. |
260 */ | 260 */ |
261 public float getMaxPageScaleFactor() { return mMaxPageScaleFactor; } | 261 public float getMaxPageScaleFactor() { return mMaxPageScaleFactor; } |
262 | 262 |
263 /** | 263 /** |
264 * @return Current device scale factor (maps DIP pixels to physical pixels). | 264 * @return Current device scale factor (maps DIP pixels to physical pixels). |
265 */ | 265 */ |
266 public float getDeviceScaleFactor() { return mDeviceScaleFactor; } | 266 public float getDeviceScaleFactor() { return mDeviceScaleFactor; } |
267 | 267 |
268 /** | 268 /** |
269 * @return True if the page doesn't allow zoom-in/zoom-out. | |
270 */ | |
271 public boolean hasFixedPageScale() { return mMinPageScaleFactor == mMaxPageS
caleFactor; } | |
272 | |
273 /** | |
274 * @return Maximum possible horizontal scroll in physical pixels. | 269 * @return Maximum possible horizontal scroll in physical pixels. |
275 */ | 270 */ |
276 public float getMaxHorizontalScrollPix() { | 271 public float getMaxHorizontalScrollPix() { |
277 return getContentWidthPix() - getLastFrameViewportWidthPix(); | 272 return getContentWidthPix() - getLastFrameViewportWidthPix(); |
278 } | 273 } |
279 | 274 |
280 /** | 275 /** |
281 * @return Maximum possible vertical scroll in physical pixels. | 276 * @return Maximum possible vertical scroll in physical pixels. |
282 */ | 277 */ |
283 public float getMaxVerticalScrollPix() { | 278 public float getMaxVerticalScrollPix() { |
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319 return pix / (mDeviceScaleFactor * mPageScaleFactor); | 314 return pix / (mDeviceScaleFactor * mPageScaleFactor); |
320 } | 315 } |
321 | 316 |
322 /** | 317 /** |
323 * @return Local CSS converted to physical coordinates. | 318 * @return Local CSS converted to physical coordinates. |
324 */ | 319 */ |
325 public float fromLocalCssToPix(float css) { | 320 public float fromLocalCssToPix(float css) { |
326 return css * mPageScaleFactor * mDeviceScaleFactor; | 321 return css * mPageScaleFactor * mDeviceScaleFactor; |
327 } | 322 } |
328 } | 323 } |
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