| // Copyright 2019 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef THIRD_PARTY_BLINK_PUBLIC_COMMON_PAGE_PAGE_ZOOM_H_ |
| #define THIRD_PARTY_BLINK_PUBLIC_COMMON_PAGE_PAGE_ZOOM_H_ |
| |
| #include "third_party/blink/public/common/common_export.h" |
| |
| namespace blink { |
| |
| // The minimum and maximum page zoom factors that are allowed. |
| BLINK_COMMON_EXPORT extern const double kMinimumPageZoomFactor; |
| BLINK_COMMON_EXPORT extern const double kMaximumPageZoomFactor; |
| |
| // Convert between page zoom factors and levels. |
| BLINK_COMMON_EXPORT double PageZoomLevelToZoomFactor(double zoom_level); |
| BLINK_COMMON_EXPORT double PageZoomFactorToZoomLevel(double factor); |
| |
| // Use this to compare page zoom factors and levels. It accounts for precision |
| // loss due to conversions back and forth. |
| BLINK_COMMON_EXPORT bool PageZoomValuesEqual(double value_a, double value_b); |
| |
| } // namespace blink |
| |
| #endif // THIRD_PARTY_BLINK_PUBLIC_COMMON_PAGE_PAGE_ZOOM_H_ |
