Major changes in the entire design.

Initial commit of this and it has several issues that have to be worked through.  Lots of
broken stuff but I needed to get it in place.

Added 2 new classes.  One is muctx which contains all the interfacing to mupdf and uses
standard c++ types.  The other is mudocument which interfaces between muctx and the WinRT
world.  It passes WinRT objects to and from applications which can be written in C++, C#,
Visual Basic, Javascript etc.   mudocument and muctx will reside in a winRT DLL.   The
Viewer application (c++ version) is now in mupdf_cpp project and now has a flip view
structure that includes a scroll viewer which has data binding to a collection.  This
enables much easier zooming and updating, however I am still trying how to bind the
canvas elements that contain the text search or link information.

1 files changed, 198 insertions, 0 deletions

diff --git a/winrt/mupdf_cpp/MainPage.xaml.h b/winrt/mupdf_cpp/MainPage.xaml.h
new file mode 100644
index 00000000..6d8bbe79
--- /dev/null
+++ b/winrt/mupdf_cpp/MainPage.xaml.h
@@ -0,0 +1,198 @@
+//
+// MainPage.xaml.h
+// Declaration of the MainPage class.
+//
+
+#pragma once
+
+#include "MainPage.g.h"
+#include "ppl.h"
+#include "ppltasks.h"
+#include <collection.h>
+#include <algorithm>
+#include "LVContents.h"
+#include "mudocument.h"
+#include "DocumentPage.h"
+
+using namespace Platform;
+using namespace Concurrency;
+using namespace Windows::Storage;
+using namespace Windows::UI::Xaml;
+using namespace Windows::UI::Xaml::Media::Imaging;
+using namespace Windows::Storage::Streams;
+using namespace Windows::Foundation;
+using namespace Windows::UI::Xaml::Controls;
+using namespace Windows::UI::Xaml::Media;
+using namespace Windows::UI::Xaml::Input;
+using namespace Windows::UI::Xaml::Shapes;
+using namespace Windows::Foundation::Collections;
+using namespace Platform::Collections;
+using namespace ListViewContents;
+using namespace Windows::UI::ViewManagement;
+using namespace Windows::UI::Popups;
+using namespace Windows::UI::Xaml::Navigation;
+using namespace mupdfwinrt;
+
+typedef enum
+{
+    StatusMessage,
+    ErrorMessage
+} NotifyType_t;
+
+typedef enum {
+    REN_AVAILABLE = 0,
+    REN_THUMBS,
+    REN_UPDATE_THUMB_CANVAS,
+    REN_PAGE            /* Used to ignore value when source based setting */  
+} RenderingStatus_t;
+
+typedef struct SearchResult_s
+{
+    int box_count;
+    int page_num;
+} SearchResult_t;
+
+typedef struct spatial_info_s
+{
+    Point size;   
+    double scale_factor;
+} spatial_info_t;
+
+typedef struct thumbs_s
+{
+    Array<InMemoryRandomAccessStream^>^ raster;  
+    Array<double>^ scale;
+    Array<Point>^  size;
+} thumbs_t;
+
+typedef struct content_s
+{
+    int num;
+    Vector<int>^  page;
+    Vector<String^>^ string_orig;
+    Vector<String^>^ string_margin;
+} content_t;
+
+namespace mupdf_cpp
+{
+	/// <summary>
+	/// An empty page that can be used on its own or navigated to within a Frame.
+	/// </summary>
+	public ref class MainPage sealed
+	{
+	public:
+		MainPage();
+
+	protected:
+		virtual void OnNavigatedTo(Windows::UI::Xaml::Navigation::NavigationEventArgs^ e) override;
+
+    /* added */
+    private:
+        Vector<DocumentPage^>^ m_docPages;
+        mudocument^ mu_doc; 
+        LVContents temp;
+        bool m_file_open;
+        int  m_currpage;
+        int  m_searchpage;
+        int  m_num_pages;
+        int  m_slider_min;
+        int  m_slider_max;
+        bool m_init_done;
+        bool m_first_time;
+        bool m_flip_from_searchlink;
+        bool m_links_on;
+        int m_search_rect_count;
+        Point m_display_size;
+        cancellation_token_source m_searchcts;
+        cancellation_token_source m_thumbcts;
+        bool m_page_update;
+        long long m_memory_use;
+        double m_curr_zoom;
+        Point m_zoom_size;
+        Point m_touchpoint;
+        Point m_canvas_translate;
+        Windows::UI::Input::ManipulationDelta m_changes;
+        ImageBrush^ m_renderedImage;
+        ImageBrush^ m_blankPage;
+        WriteableBitmap ^m_BlankBmp;
+        Canvas^ m_renderedCanvas;
+        ImageBrush^ m_zoomedImage;
+        SolidColorBrush^ m_textcolor_brush; 
+        SolidColorBrush^ m_linkcolor_brush; 
+        FlipView^ m_curr_flipView;
+        thumbs_t m_thumbnails;
+        RenderingStatus_t m_ren_status;
+        int m_thumb_page_start;
+        int m_thumb_page_stop;
+        cancellation_token_source m_ThumbCancel;
+        content_t m_content;
+        TextBlock^ m_StatusBlock;
+        bool m_zoom_mode;
+        bool m_from_doubleflip;
+        bool m_scaling_occured;
+        bool m_insearch;  /* Used for UI display */
+        bool m_search_active;  /* Used to avoid multiple UI clicks */
+        bool m_sliderchange;
+        bool m_update_flip;
+		void Picker(Platform::Object^ sender, Windows::UI::Xaml::RoutedEventArgs^ e);
+        void Searcher(Platform::Object^ sender, Windows::UI::Xaml::RoutedEventArgs^ e);
+        void OpenDocumentPrep(StorageFile^ file);
+        void OpenDocument(StorageFile^ file);
+        task<int> RenderRange(int curr_page);
+        void CleanUp();
+        void UpdatePage(int page_num, InMemoryRandomAccessStream^ ras, Point ras_size, Page_Content_t content_type);
+        void CreateBlank(int width, int height);
+        void HandleFileNotFoundException(Platform::COMException^ e); 
+        void NotifyUserFileNotExist();
+        void SetFlipView();
+        Point currPageSize(int page);
+        void Slider_ValueChanged(Platform::Object^ sender, Windows::UI::Xaml::Controls::Primitives::RangeBaseValueChangedEventArgs^ e);
+        void Slider_Released(Platform::Object^ sender, Windows::UI::Xaml::Controls::Primitives::RangeBaseValueChangedEventArgs^ e);
+        void FlipView_SelectionChanged(Object^ sender, SelectionChangedEventArgs^ e);
+        void SearchNext(Platform::Object^ sender, Windows::UI::Xaml::RoutedEventArgs^ e);
+        void SearchPrev(Platform::Object^ sender, Windows::UI::Xaml::RoutedEventArgs^ e);
+        void ResetSearch(void);  
+        void CancelSearch(Platform::Object^ sender, Windows::UI::Xaml::RoutedEventArgs^ e);
+        void SearchInDirection(int dir, String^ textToFind);    
+        void ShowSearchResults(SearchResult_t result);
+        void GridSizeChanged();
+        void UpDatePageSizes();
+        void ShowThumbnail();
+        void Canvas_ManipulationCompleted(Platform::Object^ sender, Windows::UI::Xaml::Input::ManipulationCompletedRoutedEventArgs^ e);
+        void AddThumbNail(int page_num, FlipView^ flip_view);
+        spatial_info_t InitSpatial(double scale);
+        void InitThumbnails();
+        void RenderThumbs();
+        void SetThumb(int page_num, bool replace);
+        void ReleasePages(int old_page, int new_page);
+        void Linker(Platform::Object^ sender, Windows::UI::Xaml::RoutedEventArgs^ e);
+        void AddLinkCanvas();
+        void Canvas_Single_Tap(Platform::Object^ sender, Windows::UI::Xaml::Input::TappedRoutedEventArgs^ e);
+        bool CheckRect(Rectangle^ curr_rect, Point pt);
+        int JumpToLink(int index);
+        void ClearLinksCanvas();
+        void ContentDisplay(Platform::Object^ sender, Windows::UI::Xaml::RoutedEventArgs^ e);
+        void FlattenOutline(fz_outline *outline, int level);
+        void ListView_Single_Tap(Platform::Object^ sender, Windows::UI::Xaml::Input::TappedRoutedEventArgs^ e);
+        void ContentSelected(Platform::Object^ sender, Windows::UI::Xaml::Controls::ItemClickEventArgs^ e);
+        void ContentChanged(Platform::Object^ sender, Windows::UI::Xaml::Controls::SelectionChangedEventArgs^ e);
+        void Reflower(Platform::Object^ sender, Windows::UI::Xaml::RoutedEventArgs^ e);
+        void WebViewDelta(Platform::Object^ sender, Windows::UI::Xaml::Input::ManipulationDeltaRoutedEventArgs^ e);
+        void WebViewStarting(Platform::Object^ sender, Windows::UI::Xaml::Input::ManipulationStartingRoutedEventArgs^ e);
+        void WebViewCompleted(Platform::Object^ sender, Windows::UI::Xaml::Input::ManipulationCompletedRoutedEventArgs^ e);
+        void TempViewStarting(Platform::Object^ sender, Windows::UI::Xaml::Input::ManipulationStartingRoutedEventArgs^ e);
+        void RichGridSizeChanged(Platform::Object^ sender, Windows::UI::Xaml::SizeChangedEventArgs^ e);
+        void RichGridManipulationStarting(Platform::Object^ sender, Windows::UI::Xaml::Input::ManipulationStartingRoutedEventArgs^ e);
+        void RichGridManipulationDelta(Platform::Object^ sender, Windows::UI::Xaml::Input::ManipulationDeltaRoutedEventArgs^ e);
+        void RichGridManipulationStarted(Platform::Object^ sender, Windows::UI::Xaml::Input::ManipulationStartedRoutedEventArgs^ e);
+        void RichGridManipulationCompleted(Platform::Object^ sender, Windows::UI::Xaml::Input::ManipulationCompletedRoutedEventArgs^ e);
+        void topAppBar_Loaded(Platform::Object^ sender, Windows::UI::Xaml::RoutedEventArgs^ e);
+        void UpdateAppBarButtonViewState();
+        bool EnsureUnsnapped();
+        void NotifyUser(String^ strMessage, NotifyType_t type);
+        void ExitInvokedHandler(Windows::UI::Popups::IUICommand^ command);
+        void OKInvokedHandler(Windows::UI::Popups::IUICommand^ command);
+        Point ComputePageSize(spatial_info_t spatial_info, int page_num);
+        void ScrollChanged(Platform::Object^ sender, Windows::UI::Xaml::Controls::ScrollViewerViewChangedEventArgs^ e);
+};
+}