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1 // Copyright (c) 2011 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2011 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/renderer/print_web_view_helper.h" | 5 #include "chrome/renderer/print_web_view_helper.h" |
6 | 6 |
7 #if defined(USE_SKIA) | |
8 #include <algorithm> | |
9 #include <cmath> | |
10 #endif | |
7 #include <string> | 11 #include <string> |
8 | 12 |
9 #include "base/command_line.h" | 13 #include "base/command_line.h" |
10 #include "base/logging.h" | 14 #include "base/logging.h" |
11 #include "base/metrics/histogram.h" | 15 #include "base/metrics/histogram.h" |
12 #include "base/process_util.h" | 16 #include "base/process_util.h" |
13 #include "base/utf_string_conversions.h" | 17 #include "base/utf_string_conversions.h" |
14 #include "chrome/common/chrome_switches.h" | 18 #include "chrome/common/chrome_switches.h" |
15 #include "chrome/common/print_messages.h" | 19 #include "chrome/common/print_messages.h" |
16 #include "chrome/common/render_messages.h" | 20 #include "chrome/common/render_messages.h" |
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29 #include "third_party/WebKit/Source/WebKit/chromium/public/WebSize.h" | 33 #include "third_party/WebKit/Source/WebKit/chromium/public/WebSize.h" |
30 #include "third_party/WebKit/Source/WebKit/chromium/public/WebURLRequest.h" | 34 #include "third_party/WebKit/Source/WebKit/chromium/public/WebURLRequest.h" |
31 #include "third_party/WebKit/Source/WebKit/chromium/public/WebURLResponse.h" | 35 #include "third_party/WebKit/Source/WebKit/chromium/public/WebURLResponse.h" |
32 #include "third_party/WebKit/Source/WebKit/chromium/public/WebView.h" | 36 #include "third_party/WebKit/Source/WebKit/chromium/public/WebView.h" |
33 #include "ui/base/l10n/l10n_util.h" | 37 #include "ui/base/l10n/l10n_util.h" |
34 | 38 |
35 #if defined(OS_POSIX) | 39 #if defined(OS_POSIX) |
36 #include "content/common/view_messages.h" | 40 #include "content/common/view_messages.h" |
37 #endif | 41 #endif |
38 | 42 |
43 #if defined(USE_SKIA) | |
44 #include "base/string_number_conversions.h" | |
45 #include "skia/ext/vector_canvas.h" | |
46 #include "skia/ext/vector_platform_device_skia.h" | |
47 #include "third_party/skia/include/core/SkTypeface.h" | |
48 #endif // USE_SKIA | |
49 | |
50 using base::Time; | |
39 using printing::ConvertPixelsToPoint; | 51 using printing::ConvertPixelsToPoint; |
40 using printing::ConvertPixelsToPointDouble; | 52 using printing::ConvertPixelsToPointDouble; |
41 using printing::ConvertUnit; | 53 using printing::ConvertUnit; |
42 using printing::ConvertUnitDouble; | 54 using printing::ConvertUnitDouble; |
55 using printing::GetDPI; | |
56 using printing::GetSegmentWidth; | |
43 using WebKit::WebConsoleMessage; | 57 using WebKit::WebConsoleMessage; |
44 using WebKit::WebDocument; | 58 using WebKit::WebDocument; |
45 using WebKit::WebElement; | 59 using WebKit::WebElement; |
46 using WebKit::WebFrame; | 60 using WebKit::WebFrame; |
47 using WebKit::WebNode; | 61 using WebKit::WebNode; |
48 using WebKit::WebSize; | 62 using WebKit::WebSize; |
49 using WebKit::WebString; | 63 using WebKit::WebString; |
50 using WebKit::WebURLRequest; | 64 using WebKit::WebURLRequest; |
51 using WebKit::WebView; | 65 using WebKit::WebView; |
52 | 66 |
53 namespace { | 67 namespace { |
54 | 68 |
55 const double kMinDpi = 1.0; | 69 const double kMinDpi = 1.0; |
56 | 70 |
57 int GetDPI(const PrintMsg_Print_Params* print_params) { | |
58 #if defined(OS_MACOSX) | |
59 // On the Mac, the printable area is in points, don't do any scaling based | |
60 // on dpi. | |
61 return printing::kPointsPerInch; | |
62 #else | |
63 return static_cast<int>(print_params->dpi); | |
64 #endif // defined(OS_MACOSX) | |
65 } | |
66 | |
67 bool PrintMsg_Print_Params_IsEmpty(const PrintMsg_Print_Params& params) { | 71 bool PrintMsg_Print_Params_IsEmpty(const PrintMsg_Print_Params& params) { |
68 return !params.document_cookie && !params.desired_dpi && !params.max_shrink && | 72 return !params.document_cookie && !params.desired_dpi && !params.max_shrink && |
69 !params.min_shrink && !params.dpi && params.printable_size.IsEmpty() && | 73 !params.min_shrink && !params.dpi && params.printable_size.IsEmpty() && |
70 !params.selection_only && params.page_size.IsEmpty() && | 74 !params.selection_only && params.page_size.IsEmpty() && |
71 !params.margin_top && !params.margin_left && | 75 !params.margin_top && !params.margin_left && |
72 !params.supports_alpha_blend; | 76 !params.supports_alpha_blend; |
73 } | 77 } |
74 | 78 |
75 bool PrintMsg_Print_Params_IsEqual( | 79 bool PrintMsg_Print_Params_IsEqual( |
76 const PrintMsg_PrintPages_Params& oldParams, | 80 const PrintMsg_PrintPages_Params& oldParams, |
77 const PrintMsg_PrintPages_Params& newParams) { | 81 const PrintMsg_PrintPages_Params& newParams) { |
78 return oldParams.params.desired_dpi == newParams.params.desired_dpi && | 82 return oldParams.params.desired_dpi == newParams.params.desired_dpi && |
79 oldParams.params.max_shrink == newParams.params.max_shrink && | 83 oldParams.params.max_shrink == newParams.params.max_shrink && |
80 oldParams.params.min_shrink == newParams.params.min_shrink && | 84 oldParams.params.min_shrink == newParams.params.min_shrink && |
81 oldParams.params.dpi == newParams.params.dpi && | 85 oldParams.params.dpi == newParams.params.dpi && |
82 oldParams.params.printable_size == newParams.params.printable_size && | 86 oldParams.params.printable_size == newParams.params.printable_size && |
83 oldParams.params.selection_only == newParams.params.selection_only && | 87 oldParams.params.selection_only == newParams.params.selection_only && |
84 oldParams.params.page_size == newParams.params.page_size && | 88 oldParams.params.page_size == newParams.params.page_size && |
85 oldParams.params.margin_top == newParams.params.margin_top && | 89 oldParams.params.margin_top == newParams.params.margin_top && |
86 oldParams.params.margin_left == newParams.params.margin_left && | 90 oldParams.params.margin_left == newParams.params.margin_left && |
87 oldParams.params.supports_alpha_blend == | 91 oldParams.params.supports_alpha_blend == |
88 newParams.params.supports_alpha_blend && | 92 newParams.params.supports_alpha_blend && |
89 oldParams.pages.size() == newParams.pages.size() && | 93 oldParams.pages.size() == newParams.pages.size() && |
94 oldParams.params.display_header_footer == | |
95 newParams.params.display_header_footer && | |
90 std::equal(oldParams.pages.begin(), oldParams.pages.end(), | 96 std::equal(oldParams.pages.begin(), oldParams.pages.end(), |
91 newParams.pages.begin()); | 97 newParams.pages.begin()); |
92 } | 98 } |
93 | 99 |
94 void CalculatePrintCanvasSize(const PrintMsg_Print_Params& print_params, | 100 void CalculatePrintCanvasSize(const PrintMsg_Print_Params& print_params, |
95 gfx::Size* result) { | 101 gfx::Size* result) { |
96 int dpi = GetDPI(&print_params); | 102 int dpi = GetDPI(&print_params); |
97 result->set_width(ConvertUnit(print_params.printable_size.width(), dpi, | 103 result->set_width(ConvertUnit(print_params.printable_size.width(), dpi, |
98 print_params.desired_dpi)); | 104 print_params.desired_dpi)); |
99 | 105 |
100 result->set_height(ConvertUnit(print_params.printable_size.height(), dpi, | 106 result->set_height(ConvertUnit(print_params.printable_size.height(), dpi, |
101 print_params.desired_dpi)); | 107 print_params.desired_dpi)); |
102 } | 108 } |
103 | 109 |
110 #if defined(USE_SKIA) | |
111 // Given a text, the positions, and the paint object, this method gets the | |
112 // coordinates and prints the text at those coordinates on the canvas. | |
113 void PrintHeaderFooterText( | |
114 string16 text, | |
115 skia::VectorCanvas* canvas, | |
116 SkPaint paint, | |
117 float webkit_scale_factor, | |
118 const PageSizeMargins& page_layout, | |
119 printing::HorizontalHeaderFooterPosition horizontal_position, | |
120 printing::VerticalHeaderFooterPosition vertical_position, | |
121 SkScalar offset_to_baseline) { | |
122 size_t text_byte_length = text.length() * sizeof(char16); | |
123 // Get the (x, y) coordinate from where printing of the current text should | |
124 // start depending on the horizontal alignment (LEFT, RIGHT, CENTER) and | |
125 // vertical alignment (TOP, BOTTOM). | |
126 SkScalar text_width_in_points = paint.measureText(text.c_str(), | |
127 text_byte_length); | |
128 SkScalar x = 0; | |
129 switch (horizontal_position) { | |
130 case printing::LEFT: | |
131 x = printing::kSettingHeaderFooterInterstice - page_layout.margin_left; | |
132 break; | |
133 case printing::RIGHT: | |
134 x = page_layout.content_width + page_layout.margin_right - | |
135 printing::kSettingHeaderFooterInterstice - text_width_in_points; | |
136 break; | |
137 case printing::CENTER: { | |
138 SkScalar available_width = GetSegmentWidth( | |
139 page_layout.margin_left + page_layout.margin_right + | |
140 page_layout.content_width); | |
141 x = available_width - page_layout.margin_left + | |
142 (available_width - text_width_in_points) / 2; | |
143 break; | |
144 } | |
145 default: | |
146 NOTREACHED(); | |
147 } | |
148 | |
149 SkScalar y = 0; | |
150 switch (vertical_position) { | |
151 case printing::TOP: | |
152 y = printing::kSettingHeaderFooterInterstice - | |
153 page_layout.margin_top - offset_to_baseline; | |
154 break; | |
155 case printing::BOTTOM: | |
156 y = page_layout.margin_bottom + page_layout.content_height - | |
157 printing::kSettingHeaderFooterInterstice - offset_to_baseline; | |
158 break; | |
159 default: | |
160 NOTREACHED(); | |
161 } | |
162 | |
163 x = x / webkit_scale_factor; | |
164 y = y / webkit_scale_factor; | |
165 paint.setTextSize(paint.getTextSize() / webkit_scale_factor); | |
166 canvas->drawText(text.c_str(), text_byte_length, x, y, paint); | |
167 } | |
168 | |
169 // Prints the headers onto the |canvas| if there is enough space to print them. | |
170 void PrintHeaders(skia::VectorCanvas* canvas, | |
171 SkPaint paint, | |
172 float webkit_scale_factor, | |
173 const PageSizeMargins& page_layout, | |
174 const DictionaryValue& header_footer_info) { | |
175 string16 date; | |
176 string16 title; | |
177 if (!header_footer_info.GetString(printing::kSettingHeaderFooterTitle, | |
178 &title) || | |
179 !header_footer_info.GetString(printing::kSettingHeaderFooterDate, | |
180 &date)) { | |
181 NOTREACHED(); | |
182 } | |
183 string16 header_text = date + title; | |
184 | |
185 SkRect header_bounds; | |
186 paint.measureText(header_text.c_str(), header_text.length() * sizeof(char16), | |
187 &header_bounds, 0); | |
188 SkScalar text_height = | |
189 printing::kSettingHeaderFooterInterstice + header_bounds.height(); | |
190 if (text_height > page_layout.margin_top) | |
191 return; | |
192 | |
193 PrintHeaderFooterText(date, canvas, paint, webkit_scale_factor, page_layout, | |
194 printing::LEFT, printing::TOP, header_bounds.top()); | |
195 PrintHeaderFooterText(title, canvas, paint, webkit_scale_factor, page_layout, | |
196 printing::CENTER, printing::TOP, header_bounds.top()); | |
197 } | |
198 | |
199 // Prints the footers onto the |canvas| if there is enough space to print them. | |
200 void PrintFooters(skia::VectorCanvas* canvas, | |
vandebo (ex-Chrome)
2011/08/11 23:32:13
PrintHeaders and PrintFooters don't do much. I th
Aayush Kumar
2011/08/12 08:35:40
Done.
| |
201 SkPaint paint, | |
202 int page_number, | |
203 int total_pages, | |
204 float webkit_scale_factor, | |
205 const PageSizeMargins& page_layout, | |
206 const DictionaryValue& header_footer_info) { | |
207 string16 page_of_total_pages = base::IntToString16(page_number) + | |
208 UTF8ToUTF16("/") + | |
209 base::IntToString16(total_pages); | |
210 string16 url; | |
211 if (!header_footer_info.GetString(printing::kSettingHeaderFooterURL, | |
212 &url)) { | |
213 NOTREACHED(); | |
214 } | |
215 string16 footer_text = page_of_total_pages + url; | |
216 | |
217 SkRect footer_bounds; | |
218 paint.measureText(footer_text.c_str(), footer_text.length() * sizeof(char16), | |
219 &footer_bounds, 0); | |
220 SkScalar text_height = | |
221 printing::kSettingHeaderFooterInterstice + footer_bounds.height(); | |
222 if (text_height > page_layout.margin_bottom) | |
223 return; | |
224 | |
225 PrintHeaderFooterText(page_of_total_pages, canvas, paint, | |
226 webkit_scale_factor, page_layout, printing::RIGHT, | |
227 printing::BOTTOM, footer_bounds.bottom()); | |
228 PrintHeaderFooterText(url, canvas, paint, webkit_scale_factor, page_layout, | |
229 printing::LEFT, printing::BOTTOM, footer_bounds.bottom() ); | |
230 } | |
231 #endif // USE_SKIA | |
232 | |
104 } // namespace | 233 } // namespace |
105 | 234 |
235 #if defined(USE_SKIA) | |
236 // static - Not anonymous so that platform implementations can use it. | |
237 void PrintWebViewHelper::PrintHeaderAndFooter( | |
238 SkDevice* device, | |
239 skia::VectorCanvas* canvas, | |
240 int page_number, | |
241 int total_pages, | |
242 float webkit_scale_factor, | |
243 const PageSizeMargins& page_layout, | |
244 const DictionaryValue& header_footer_info) { | |
245 static_cast<skia::VectorPlatformDeviceSkia*>(device)->setDrawingArea( | |
246 SkPDFDevice::kMargin_DrawingArea); | |
247 | |
248 SkPaint paint; | |
249 paint.setColor(SK_ColorBLACK); | |
250 paint.setTextEncoding(SkPaint::kUTF16_TextEncoding); | |
251 paint.setTextSize(printing::kSettingHeaderFooterFontSize); | |
252 paint.setTypeface(SkTypeface::CreateFromName( | |
253 printing::kSettingHeaderFooterFontName, SkTypeface::kNormal)); | |
254 | |
255 PrintHeaders(canvas, paint, webkit_scale_factor, page_layout, | |
256 header_footer_info); | |
257 PrintFooters(canvas, paint, page_number, total_pages, webkit_scale_factor, | |
258 page_layout, header_footer_info); | |
259 | |
260 static_cast<skia::VectorPlatformDeviceSkia*>(device)->setDrawingArea( | |
261 SkPDFDevice::kContent_DrawingArea); | |
262 } | |
263 #endif // USE_SKIA | |
264 | |
106 PrepareFrameAndViewForPrint::PrepareFrameAndViewForPrint( | 265 PrepareFrameAndViewForPrint::PrepareFrameAndViewForPrint( |
107 const PrintMsg_Print_Params& print_params, | 266 const PrintMsg_Print_Params& print_params, |
108 WebFrame* frame, | 267 WebFrame* frame, |
109 WebNode* node) | 268 WebNode* node) |
110 : frame_(frame), | 269 : frame_(frame), |
111 web_view_(frame->view()), | 270 web_view_(frame->view()), |
112 dpi_(static_cast<int>(print_params.dpi)), | 271 dpi_(static_cast<int>(print_params.dpi)), |
113 expected_pages_count_(0), | 272 expected_pages_count_(0), |
114 use_browser_overlays_(true), | 273 use_browser_overlays_(true), |
115 finished_(false) { | 274 finished_(false) { |
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758 return false; | 917 return false; |
759 } | 918 } |
760 return true; | 919 return true; |
761 } | 920 } |
762 | 921 |
763 bool PrintWebViewHelper::UpdatePrintSettings( | 922 bool PrintWebViewHelper::UpdatePrintSettings( |
764 const DictionaryValue& job_settings) { | 923 const DictionaryValue& job_settings) { |
765 PrintMsg_PrintPages_Params settings; | 924 PrintMsg_PrintPages_Params settings; |
766 | 925 |
767 Send(new PrintHostMsg_UpdatePrintSettings(routing_id(), | 926 Send(new PrintHostMsg_UpdatePrintSettings(routing_id(), |
768 print_pages_params_->params.document_cookie, job_settings, &settings)); | 927 print_pages_params_->params.document_cookie, job_settings, &settings)); |
769 | 928 |
770 if (settings.params.dpi < kMinDpi || !settings.params.document_cookie) | 929 if (settings.params.dpi < kMinDpi || !settings.params.document_cookie) |
771 return false; | 930 return false; |
772 | 931 |
773 if (!UpdatePrintSettingsRequestId(job_settings, &(settings.params))) | 932 if (!UpdatePrintSettingsRequestId(job_settings, &(settings.params))) |
774 return false; | 933 return false; |
775 | 934 |
776 print_pages_params_.reset(new PrintMsg_PrintPages_Params(settings)); | 935 print_pages_params_.reset(new PrintMsg_PrintPages_Params(settings)); |
936 | |
937 // Getting Header and Footer settings. | |
938 bool display_header_footer = false; | |
939 if (!job_settings.GetBoolean(printing::kSettingHeaderFooterEnabled, | |
940 &display_header_footer)) { | |
941 NOTREACHED(); | |
942 } | |
943 print_pages_params_->params.display_header_footer = display_header_footer; | |
944 if (display_header_footer) { | |
945 header_footer_info_.reset(new DictionaryValue()); | |
946 header_footer_info_->SetString(printing::kSettingHeaderFooterDate, | |
947 print_pages_params_->params.date); | |
948 header_footer_info_->SetString(printing::kSettingHeaderFooterURL, | |
949 print_pages_params_->params.url); | |
950 header_footer_info_->SetString(printing::kSettingHeaderFooterTitle, | |
951 print_pages_params_->params.title); | |
952 } | |
953 | |
777 Send(new PrintHostMsg_DidGetDocumentCookie(routing_id(), | 954 Send(new PrintHostMsg_DidGetDocumentCookie(routing_id(), |
778 settings.params.document_cookie)); | 955 settings.params.document_cookie)); |
779 return true; | 956 return true; |
780 } | 957 } |
781 | 958 |
782 bool PrintWebViewHelper::GetPrintSettingsFromUser(WebKit::WebFrame* frame, | 959 bool PrintWebViewHelper::GetPrintSettingsFromUser(WebKit::WebFrame* frame, |
783 int expected_pages_count, | 960 int expected_pages_count, |
784 bool use_browser_overlays) { | 961 bool use_browser_overlays) { |
785 PrintHostMsg_ScriptedPrint_Params params; | 962 PrintHostMsg_ScriptedPrint_Params params; |
786 PrintMsg_PrintPages_Params print_settings; | 963 PrintMsg_PrintPages_Params print_settings; |
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1123 const gfx::Size& | 1300 const gfx::Size& |
1124 PrintWebViewHelper::PrintPreviewContext::GetPrintCanvasSize() const { | 1301 PrintWebViewHelper::PrintPreviewContext::GetPrintCanvasSize() const { |
1125 return prep_frame_view_->GetPrintCanvasSize(); | 1302 return prep_frame_view_->GetPrintCanvasSize(); |
1126 } | 1303 } |
1127 | 1304 |
1128 void PrintWebViewHelper::PrintPreviewContext::ClearContext() { | 1305 void PrintWebViewHelper::PrintPreviewContext::ClearContext() { |
1129 prep_frame_view_.reset(); | 1306 prep_frame_view_.reset(); |
1130 metafile_.reset(); | 1307 metafile_.reset(); |
1131 rendered_pages_.clear(); | 1308 rendered_pages_.clear(); |
1132 } | 1309 } |
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