nsPrintObject.h (2661B)
1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ 2 /* vim: set ts=8 sts=2 et sw=2 tw=80: */ 3 /* This Source Code Form is subject to the terms of the Mozilla Public 4 * License, v. 2.0. If a copy of the MPL was not distributed with this 5 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ 6 #ifndef nsPrintObject_h___ 7 #define nsPrintObject_h___ 8 9 #include "mozilla/UniquePtr.h" 10 11 // Interfaces 12 #include "nsCOMPtr.h" 13 #include "nsIDocShell.h" 14 #include "nsIDocShellTreeOwner.h" 15 16 class nsIContent; 17 class nsPresContext; 18 19 namespace mozilla { 20 class PresShell; 21 } // namespace mozilla 22 23 //--------------------------------------------------- 24 //-- nsPrintObject Class 25 //--------------------------------------------------- 26 class nsPrintObject final { 27 public: 28 /** 29 * If aParent is nullptr (default), then this instance will be initialized as 30 * a "root" nsPrintObject. Otherwise, this will be a "nested" nsPrintObject. 31 */ 32 nsPrintObject(nsIDocShell& aDocShell, mozilla::dom::Document& aDoc, 33 nsPrintObject* aParent = nullptr); 34 ~nsPrintObject(); 35 36 void DestroyPresentation(); 37 38 /** 39 * Recursively sets all the PO items to be printed 40 * from the given item down into the tree 41 */ 42 void EnablePrinting(bool aEnable); 43 44 /** 45 * Recursively sets all the PO items to be printed if they have a selection. 46 */ 47 void EnablePrintingSelectionOnly(); 48 49 bool PrintingIsEnabled() const { return mPrintingIsEnabled; } 50 51 bool HasSelection() const; 52 53 // Data Members 54 nsCOMPtr<nsIDocShell> mDocShell; 55 nsCOMPtr<nsIDocShellTreeOwner> mTreeOwner; 56 RefPtr<mozilla::dom::Document> mDocument; 57 58 RefPtr<nsPresContext> mPresContext; 59 RefPtr<mozilla::PresShell> mPresShell; 60 61 nsCOMPtr<nsIContent> mContent; 62 63 nsTArray<mozilla::UniquePtr<nsPrintObject>> mKids; 64 const nsPrintObject* mParent; // This is a non-owning pointer. 65 bool mHasBeenPrinted = false; 66 bool mInvisible = false; // Indicates PO is set to not visible by CSS 67 68 // The scale factor that sheets should be scaled by. This is either the 69 // explicit scale chosen by the user or else the shrink-to-fit scale factor 70 // if the user selects shrink-to-fit. Only set on the top-level nsPrintObject 71 // since this is only used by nsPageFrame (via nsPresContext::GetPageScale()). 72 float mZoomRatio = 1.0; 73 74 // If the user selects the shrink-to-fit option, the shrink-to-fit scale 75 // factor is calculated and stored here. Only set on the top-level 76 // nsPrintObject. 77 float mShrinkRatio = 1.0; 78 79 private: 80 nsPrintObject& operator=(const nsPrintObject& aOther) = delete; 81 82 bool mPrintingIsEnabled = false; 83 }; 84 85 #endif /* nsPrintObject_h___ */