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1 // Copyright (c) 2012 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 #ifndef CHROME_RENDERER_PRINT_WEB_VIEW_HELPER_H_ | 5 #ifndef CHROME_RENDERER_PRINT_WEB_VIEW_HELPER_H_ |
6 #define CHROME_RENDERER_PRINT_WEB_VIEW_HELPER_H_ | 6 #define CHROME_RENDERER_PRINT_WEB_VIEW_HELPER_H_ |
7 #pragma once | 7 #pragma once |
8 | 8 |
9 #include <vector> | 9 #include <vector> |
10 | 10 |
11 #include "base/memory/scoped_ptr.h" | 11 #include "base/memory/scoped_ptr.h" |
12 #include "base/shared_memory.h" | 12 #include "base/shared_memory.h" |
13 #include "base/time.h" | 13 #include "base/time.h" |
14 #include "content/public/renderer/render_view_observer.h" | 14 #include "content/public/renderer/render_view_observer.h" |
15 #include "content/public/renderer/render_view_observer_tracker.h" | 15 #include "content/public/renderer/render_view_observer_tracker.h" |
16 #include "printing/metafile.h" | 16 #include "printing/metafile.h" |
17 #include "printing/metafile_impl.h" | 17 #include "printing/metafile_impl.h" |
18 #include "third_party/WebKit/Source/WebKit/chromium/public/platform/WebCanvas.h" | 18 #include "third_party/WebKit/Source/WebKit/chromium/public/platform/WebCanvas.h" |
19 #include "third_party/WebKit/Source/WebKit/chromium/public/WebFrameClient.h" | 19 #include "third_party/WebKit/Source/WebKit/chromium/public/WebFrameClient.h" |
20 #include "third_party/WebKit/Source/WebKit/chromium/public/WebNode.h" | 20 #include "third_party/WebKit/Source/WebKit/chromium/public/WebNode.h" |
| 21 #include "third_party/WebKit/Source/WebKit/chromium/public/WebPrintParams.h" |
21 #include "third_party/WebKit/Source/WebKit/chromium/public/WebViewClient.h" | 22 #include "third_party/WebKit/Source/WebKit/chromium/public/WebViewClient.h" |
22 #include "ui/gfx/size.h" | 23 #include "ui/gfx/size.h" |
23 | 24 |
24 struct PrintMsg_Print_Params; | 25 struct PrintMsg_Print_Params; |
25 struct PrintMsg_PrintPage_Params; | 26 struct PrintMsg_PrintPage_Params; |
26 struct PrintMsg_PrintPages_Params; | 27 struct PrintMsg_PrintPages_Params; |
27 | 28 |
28 namespace base { | 29 namespace base { |
29 class DictionaryValue; | 30 class DictionaryValue; |
30 } | 31 } |
| 32 |
31 namespace printing { | 33 namespace printing { |
32 struct PageSizeMargins; | 34 struct PageSizeMargins; |
33 } | 35 } |
34 | 36 |
| 37 namespace webkit { |
| 38 struct WebPrintScalingOption; |
| 39 struct WebRect; |
| 40 struct WebSize; |
| 41 } |
35 // Class that calls the Begin and End print functions on the frame and changes | 42 // Class that calls the Begin and End print functions on the frame and changes |
36 // the size of the view temporarily to support full page printing.. | 43 // the size of the view temporarily to support full page printing.. |
37 // Do not serve any events in the time between construction and destruction of | 44 // Do not serve any events in the time between construction and destruction of |
38 // this class because it will cause flicker. | 45 // this class because it will cause flicker. |
39 class PrepareFrameAndViewForPrint { | 46 class PrepareFrameAndViewForPrint { |
40 public: | 47 public: |
41 // Prints |frame|. If |node| is not NULL, then only that node will be | 48 // Prints |frame|. If |node| is not NULL, then only that node will be |
42 // printed. | 49 // printed. |
43 PrepareFrameAndViewForPrint(const PrintMsg_Print_Params& print_params, | 50 PrepareFrameAndViewForPrint(const PrintMsg_Print_Params& print_params, |
44 WebKit::WebFrame* frame, | 51 WebKit::WebFrame* frame, |
45 const WebKit::WebNode& node); | 52 const WebKit::WebNode& node); |
46 ~PrepareFrameAndViewForPrint(); | 53 ~PrepareFrameAndViewForPrint(); |
47 | 54 |
48 void UpdatePrintParams(const PrintMsg_Print_Params& print_params); | 55 void UpdatePrintParams(const PrintMsg_Print_Params& print_params); |
49 | 56 |
50 int GetExpectedPageCount() const { | 57 int GetExpectedPageCount() const { |
51 return expected_pages_count_; | 58 return expected_pages_count_; |
52 } | 59 } |
53 | 60 |
54 bool ShouldUseBrowserOverlays() const { | 61 bool ShouldUseBrowserOverlays() const { |
55 return use_browser_overlays_; | 62 return use_browser_overlays_; |
56 } | 63 } |
57 | 64 |
58 const gfx::Size& GetPrintCanvasSize() const { | 65 gfx::Size GetPrintCanvasSize() const { |
59 return print_canvas_size_; | 66 return gfx::Size(web_print_params_.printContentArea.width, |
| 67 web_print_params_.printContentArea.height); |
60 } | 68 } |
61 | 69 |
62 void FinishPrinting(); | 70 void FinishPrinting(); |
63 | 71 |
64 private: | 72 private: |
65 void StartPrinting(const gfx::Size& print_params); | 73 void StartPrinting(const WebKit::WebRect& canvas_area, |
| 74 const WebKit::WebRect& printable_area, |
| 75 const WebKit::WebSize& paper_size, |
| 76 int dpi, |
| 77 const WebKit::WebPrintScalingOption& print_scaling_option); |
66 | 78 |
67 WebKit::WebFrame* frame_; | 79 WebKit::WebFrame* frame_; |
68 WebKit::WebNode node_to_print_; | 80 WebKit::WebNode node_to_print_; |
69 WebKit::WebView* web_view_; | 81 WebKit::WebView* web_view_; |
70 gfx::Size print_canvas_size_; | 82 WebKit::WebPrintParams web_print_params_; |
71 gfx::Size prev_view_size_; | 83 gfx::Size prev_view_size_; |
72 gfx::Size prev_scroll_offset_; | 84 gfx::Size prev_scroll_offset_; |
73 int dpi_; | |
74 int expected_pages_count_; | 85 int expected_pages_count_; |
75 bool use_browser_overlays_; | 86 bool use_browser_overlays_; |
76 bool finished_; | 87 bool finished_; |
77 | 88 |
78 DISALLOW_COPY_AND_ASSIGN(PrepareFrameAndViewForPrint); | 89 DISALLOW_COPY_AND_ASSIGN(PrepareFrameAndViewForPrint); |
79 }; | 90 }; |
80 | 91 |
81 // PrintWebViewHelper handles most of the printing grunt work for RenderView. | 92 // PrintWebViewHelper handles most of the printing grunt work for RenderView. |
82 // We plan on making print asynchronous and that will require copying the DOM | 93 // We plan on making print asynchronous and that will require copying the DOM |
83 // of the document and creating a new WebView with the contents. | 94 // of the document and creating a new WebView with the contents. |
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153 const printing::PageSizeMargins& page_layout_in_points, | 164 const printing::PageSizeMargins& page_layout_in_points, |
154 gfx::Size* page_size, | 165 gfx::Size* page_size, |
155 gfx::Rect* content_area); | 166 gfx::Rect* content_area); |
156 | 167 |
157 // Update |ignore_css_margins_| based on settings. | 168 // Update |ignore_css_margins_| based on settings. |
158 void UpdateFrameMarginsCssInfo(const base::DictionaryValue& settings); | 169 void UpdateFrameMarginsCssInfo(const base::DictionaryValue& settings); |
159 | 170 |
160 // Returns true if the current destination printer is PRINT_TO_PDF. | 171 // Returns true if the current destination printer is PRINT_TO_PDF. |
161 bool IsPrintToPdfRequested(const base::DictionaryValue& settings); | 172 bool IsPrintToPdfRequested(const base::DictionaryValue& settings); |
162 | 173 |
| 174 // Returns the print scaling option to retain/scale/crop the source page size |
| 175 // to fit the printable area of the paper. |
| 176 // |
| 177 // We retain the source page size when the current destination printer is |
| 178 // SAVE_AS_PDF. |
| 179 // |
| 180 // We crop the source page size to fit the printable area or we print only the |
| 181 // left top page contents when |
| 182 // (1) Source is PDF and the user has requested not to fit to printable area |
| 183 // via |job_settings|. |
| 184 // (2) Source is PDF. This is the first preview request and print scaling |
| 185 // option is disabled for initiator renderer plugin. |
| 186 // |
| 187 // In all other cases, we scale the source page to fit the printable area. |
| 188 WebKit::WebPrintScalingOption GetPrintScalingOption( |
| 189 bool source_is_html, |
| 190 const base::DictionaryValue& settings, |
| 191 const PrintMsg_Print_Params& params); |
| 192 |
163 // Initiate print preview. | 193 // Initiate print preview. |
164 void OnInitiatePrintPreview(); | 194 void OnInitiatePrintPreview(); |
165 | 195 |
166 // Start the process of generating a print preview using |settings|. | 196 // Start the process of generating a print preview using |settings|. |
167 void OnPrintPreview(const base::DictionaryValue& settings); | 197 void OnPrintPreview(const base::DictionaryValue& settings); |
168 | 198 |
169 // Initialize the print preview document. | 199 // Initialize the print preview document. |
170 bool CreatePreviewDocument(); | 200 bool CreatePreviewDocument(); |
171 | 201 |
172 // Renders a print preview page. |page_number| is 0-based. | 202 // Renders a print preview page. |page_number| is 0-based. |
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193 | 223 |
194 void Print(WebKit::WebFrame* frame, const WebKit::WebNode& node); | 224 void Print(WebKit::WebFrame* frame, const WebKit::WebNode& node); |
195 | 225 |
196 // Notification when printing is done - signal tear-down/free resources. | 226 // Notification when printing is done - signal tear-down/free resources. |
197 void DidFinishPrinting(PrintingResult result); | 227 void DidFinishPrinting(PrintingResult result); |
198 | 228 |
199 // Print Settings ----------------------------------------------------------- | 229 // Print Settings ----------------------------------------------------------- |
200 | 230 |
201 // Initialize print page settings with default settings. | 231 // Initialize print page settings with default settings. |
202 // Used only for native printing workflow. | 232 // Used only for native printing workflow. |
203 bool InitPrintSettings(); | 233 bool InitPrintSettings(bool fit_to_paper_size); |
204 | 234 |
205 // Initialize print page settings with default settings and prepare the frame | 235 // Initialize print page settings with default settings and prepare the frame |
206 // for print. A new PrepareFrameAndViewForPrint is created to fulfill the | 236 // for print. A new PrepareFrameAndViewForPrint is created to fulfill the |
207 // request and is filled into the |prepare| argument. | 237 // request and is filled into the |prepare| argument. |
208 // Used only for native printing workflow. | 238 // Used only for native printing workflow. |
209 bool InitPrintSettingsAndPrepareFrame( | 239 bool InitPrintSettingsAndPrepareFrame( |
210 WebKit::WebFrame* frame, | 240 WebKit::WebFrame* frame, |
211 const WebKit::WebNode& node, | 241 const WebKit::WebNode& node, |
212 scoped_ptr<PrepareFrameAndViewForPrint>* prepare); | 242 scoped_ptr<PrepareFrameAndViewForPrint>* prepare); |
213 | 243 |
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417 void set_generate_draft_pages(bool generate_draft_pages); | 447 void set_generate_draft_pages(bool generate_draft_pages); |
418 void set_error(enum PrintPreviewErrorBuckets error); | 448 void set_error(enum PrintPreviewErrorBuckets error); |
419 | 449 |
420 // Getters | 450 // Getters |
421 WebKit::WebFrame* frame(); | 451 WebKit::WebFrame* frame(); |
422 const WebKit::WebNode& node() const; | 452 const WebKit::WebNode& node() const; |
423 int total_page_count() const; | 453 int total_page_count() const; |
424 bool generate_draft_pages() const; | 454 bool generate_draft_pages() const; |
425 printing::PreviewMetafile* metafile(); | 455 printing::PreviewMetafile* metafile(); |
426 const PrintMsg_Print_Params& print_params() const; | 456 const PrintMsg_Print_Params& print_params() const; |
427 const gfx::Size& GetPrintCanvasSize() const; | 457 gfx::Size GetPrintCanvasSize() const; |
428 int last_error() const; | 458 int last_error() const; |
429 | 459 |
430 private: | 460 private: |
431 enum State { | 461 enum State { |
432 UNINITIALIZED, // Not ready to render. | 462 UNINITIALIZED, // Not ready to render. |
433 INITIALIZED, // Ready to render. | 463 INITIALIZED, // Ready to render. |
434 RENDERING, // Rendering. | 464 RENDERING, // Rendering. |
435 DONE // Finished rendering. | 465 DONE // Finished rendering. |
436 }; | 466 }; |
437 | 467 |
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467 enum PrintPreviewErrorBuckets error_; | 497 enum PrintPreviewErrorBuckets error_; |
468 | 498 |
469 State state_; | 499 State state_; |
470 }; | 500 }; |
471 | 501 |
472 PrintPreviewContext print_preview_context_; | 502 PrintPreviewContext print_preview_context_; |
473 DISALLOW_COPY_AND_ASSIGN(PrintWebViewHelper); | 503 DISALLOW_COPY_AND_ASSIGN(PrintWebViewHelper); |
474 }; | 504 }; |
475 | 505 |
476 #endif // CHROME_RENDERER_PRINT_WEB_VIEW_HELPER_H_ | 506 #endif // CHROME_RENDERER_PRINT_WEB_VIEW_HELPER_H_ |
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