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1 // Copyright (c) 2011 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2012 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 #include "chrome/browser/chrome_page_zoom.h" | 5 #include "chrome/browser/chrome_page_zoom.h" |
6 | 6 |
7 #include <algorithm> | 7 #include <algorithm> |
8 #include <cmath> | 8 #include <cmath> |
9 | 9 |
10 #include "chrome/browser/chrome_page_zoom_constants.h" | 10 #include "chrome/browser/chrome_page_zoom_constants.h" |
11 #include "content/public/common/page_zoom.h" | 11 #include "content/public/browser/render_view_host.h" |
| 12 #include "content/public/browser/user_metrics.h" |
| 13 #include "content/public/browser/web_contents.h" |
| 14 #include "content/public/common/renderer_preferences.h" |
12 #include "third_party/WebKit/Source/WebKit/chromium/public/WebView.h" | 15 #include "third_party/WebKit/Source/WebKit/chromium/public/WebView.h" |
13 | 16 |
| 17 using content::UserMetricsAction; |
| 18 |
14 namespace chrome_page_zoom { | 19 namespace chrome_page_zoom { |
15 | 20 |
16 enum PageZoomValueType { | 21 enum PageZoomValueType { |
17 PAGE_ZOOM_VALUE_TYPE_FACTOR, | 22 PAGE_ZOOM_VALUE_TYPE_FACTOR, |
18 PAGE_ZOOM_VALUE_TYPE_LEVEL, | 23 PAGE_ZOOM_VALUE_TYPE_LEVEL, |
19 }; | 24 }; |
20 | 25 |
21 std::vector<double> PresetZoomValues(PageZoomValueType value_type, | 26 std::vector<double> PresetZoomValues(PageZoomValueType value_type, |
22 double custom_value) { | 27 double custom_value) { |
23 // Generate a vector of zoom values from an array of known preset | 28 // Generate a vector of zoom values from an array of known preset |
(...skipping 25 matching lines...) Expand all Loading... |
49 } | 54 } |
50 | 55 |
51 std::vector<double> PresetZoomFactors(double custom_factor) { | 56 std::vector<double> PresetZoomFactors(double custom_factor) { |
52 return PresetZoomValues(PAGE_ZOOM_VALUE_TYPE_FACTOR, custom_factor); | 57 return PresetZoomValues(PAGE_ZOOM_VALUE_TYPE_FACTOR, custom_factor); |
53 } | 58 } |
54 | 59 |
55 std::vector<double> PresetZoomLevels(double custom_level) { | 60 std::vector<double> PresetZoomLevels(double custom_level) { |
56 return PresetZoomValues(PAGE_ZOOM_VALUE_TYPE_LEVEL, custom_level); | 61 return PresetZoomValues(PAGE_ZOOM_VALUE_TYPE_LEVEL, custom_level); |
57 } | 62 } |
58 | 63 |
| 64 void Zoom(content::WebContents* web_contents, content::PageZoom zoom) { |
| 65 content::RenderViewHost* host = web_contents->GetRenderViewHost(); |
| 66 if (zoom == content::PAGE_ZOOM_RESET) { |
| 67 host->SetZoomLevel(0); |
| 68 content::RecordAction(UserMetricsAction("ZoomNormal")); |
| 69 return; |
| 70 } |
| 71 |
| 72 double current_zoom_level = web_contents->GetZoomLevel(); |
| 73 double default_zoom_level = |
| 74 web_contents->GetMutableRendererPrefs()->default_zoom_level; |
| 75 |
| 76 // Generate a vector of zoom levels from an array of known presets along with |
| 77 // the default level added if necessary. |
| 78 std::vector<double> zoom_levels = PresetZoomLevels(default_zoom_level); |
| 79 |
| 80 if (zoom == content::PAGE_ZOOM_OUT) { |
| 81 // Iterate through the zoom levels in reverse order to find the next |
| 82 // lower level based on the current zoom level for this page. |
| 83 for (std::vector<double>::reverse_iterator i = zoom_levels.rbegin(); |
| 84 i != zoom_levels.rend(); ++i) { |
| 85 double zoom_level = *i; |
| 86 if (content::ZoomValuesEqual(zoom_level, current_zoom_level)) |
| 87 continue; |
| 88 if (zoom_level < current_zoom_level) { |
| 89 host->SetZoomLevel(zoom_level); |
| 90 content::RecordAction(UserMetricsAction("ZoomMinus")); |
| 91 return; |
| 92 } |
| 93 content::RecordAction(UserMetricsAction("ZoomMinus_AtMinimum")); |
| 94 } |
| 95 } else { |
| 96 // Iterate through the zoom levels in normal order to find the next |
| 97 // higher level based on the current zoom level for this page. |
| 98 for (std::vector<double>::const_iterator i = zoom_levels.begin(); |
| 99 i != zoom_levels.end(); ++i) { |
| 100 double zoom_level = *i; |
| 101 if (content::ZoomValuesEqual(zoom_level, current_zoom_level)) |
| 102 continue; |
| 103 if (zoom_level > current_zoom_level) { |
| 104 host->SetZoomLevel(zoom_level); |
| 105 content::RecordAction(UserMetricsAction("ZoomPlus")); |
| 106 return; |
| 107 } |
| 108 } |
| 109 content::RecordAction(UserMetricsAction("ZoomPlus_AtMaximum")); |
| 110 } |
| 111 } |
| 112 |
59 } // namespace chrome_page_zoom | 113 } // namespace chrome_page_zoom |
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