printing/printing_context_android.h

   1 // Copyright 2013 The Chromium Authors
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef PRINTING_PRINTING_CONTEXT_ANDROID_H_
   6 #define PRINTING_PRINTING_CONTEXT_ANDROID_H_
   7
   8 #include <string>
   9
  10 #include "base/android/scoped_java_ref.h"
  11 #include "base/file_descriptor_posix.h"
  12 #include "printing/mojom/print.mojom.h"
  13 #include "printing/printing_context.h"
  14
  15 namespace ui {
  16 class WindowAndroid;
  17 }
  18
  19 namespace printing {
  20
  21 // Android subclass of PrintingContext. This class communicates with the
  22 // Java side through JNI.
  23 class COMPONENT_EXPORT(PRINTING) PrintingContextAndroid
  24     : public PrintingContext {
  25  public:
  26   explicit PrintingContextAndroid(Delegate* delegate);
  27   PrintingContextAndroid(const PrintingContextAndroid&) = delete;
  28   PrintingContextAndroid& operator=(const PrintingContextAndroid&) = delete;
  29   ~PrintingContextAndroid() override;
  30
  31   // Called when the page is successfully written to a PDF using the file
  32   // descriptor specified, or when the printing operation failed. On success,
  33   // the PDF has `page_count` pages. Non-positive `page_count` indicates
  34   // failure.
  35   static void PdfWritingDone(int page_count);
  36
  37   static void SetPendingPrint(
  38       ui::WindowAndroid* window,
  39       const base::android::ScopedJavaLocalRef<jobject>& printable,
  40       int render_process_id,
  41       int render_frame_id);
  42
  43   // Called from Java, when printing settings from the user are ready or the
  44   // printing operation is canceled.
  45   void AskUserForSettingsReply(JNIEnv* env,
  46                                const base::android::JavaParamRef<jobject>& obj,
  47                                jboolean success);
  48
  49   // Called from Java, when a printing process initiated by a script finishes.
  50   void ShowSystemDialogDone(JNIEnv* env,
  51                             const base::android::JavaParamRef<jobject>& obj);
  52
  53   // PrintingContext implementation.
  54   void AskUserForSettings(int max_pages,
  55                           bool has_selection,
  56                           bool is_scripted,
  57                           PrintSettingsCallback callback) override;
  58   mojom::ResultCode UseDefaultSettings() override;
  59   gfx::Size GetPdfPaperSizeDeviceUnits() override;
  60   mojom::ResultCode UpdatePrinterSettings(
  61       const PrinterSettings& printer_settings) override;
  62   mojom::ResultCode NewDocument(const std::u16string& document_name) override;
  63   mojom::ResultCode PrintDocument(const MetafilePlayer& metafile,
  64                                   const PrintSettings& settings,
  65                                   uint32_t num_pages) override;
  66   mojom::ResultCode DocumentDone() override;
  67   void Cancel() override;
  68   void ReleaseContext() override;
  69   printing::NativeDrawingContext context() const override;
  70
  71  private:
  72   bool is_file_descriptor_valid() const { return fd_ > base::kInvalidFd; }
  73
  74   base::android::ScopedJavaGlobalRef<jobject> j_printing_context_;
  75
  76   // The callback from AskUserForSettings to be called when the settings are
  77   // ready on the Java side
  78   PrintSettingsCallback callback_;
  79
  80   int fd_ = base::kInvalidFd;
  81 };
  82
  83 }  // namespace printing
  84
  85 #endif  // PRINTING_PRINTING_CONTEXT_ANDROID_H_