diff options
Diffstat (limited to 'winrt/mupdf_cpp/MainPage.xaml.cpp')
| -rw-r--r-- | winrt/mupdf_cpp/MainPage.xaml.cpp | 1479 |
1 files changed, 0 insertions, 1479 deletions
diff --git a/winrt/mupdf_cpp/MainPage.xaml.cpp b/winrt/mupdf_cpp/MainPage.xaml.cpp deleted file mode 100644 index d31c2b94..00000000 --- a/winrt/mupdf_cpp/MainPage.xaml.cpp +++ /dev/null @@ -1,1479 +0,0 @@ -// -// MainPage.xaml.cpp -// Implementation of the MainPage class. -// - -#include "pch.h" -#include "MainPage.xaml.h" - -#define LOOK_AHEAD 0 /* A +/- count on the pages to pre-render */ -#define THUMB_PREADD 10 -#define MIN_SCALE 0.5 - -#define SCALE_THUMB 0.1 - -#define BLANK_WIDTH 17 -#define BLANK_HEIGHT 22 - -#define KEYBOARD_ZOOM_STEP 0.25 -#define ZOOM_MAX 4 -#define ZOOM_MIN 0.25 - -#define KEY_PLUS 0xbb -#define KEY_MINUS 0xbd -#define ZOOM_IN 0 -#define ZOOM_OUT 1 - -static float screenScale = 1; - -using namespace mupdf_cpp; -using namespace Windows::Foundation; -using namespace Windows::UI::Xaml; -using namespace Windows::UI::Xaml::Controls; -using namespace Windows::UI::Xaml::Controls::Primitives; -using namespace Windows::UI::Xaml::Data; -using namespace Windows::UI::Xaml::Media; -using namespace Windows::UI::Xaml::Navigation; -using namespace Windows::Graphics::Display; - -//****************** Added ***************** -using namespace Windows::Storage::Pickers; -using namespace Windows::Devices::Enumeration; -using namespace concurrency; -using namespace Windows::Graphics::Imaging; -//****************** End Add **************** - -#ifndef NDEBUG -unsigned int _mainThreadId = 0U; - -#ifdef __cplusplus -extern "C" { -#endif - - // The IsMainThread function returns true if the current thread is the app's main thread and false otherwise. - bool IsMainThread() - { - return (_mainThreadId == GetCurrentThreadId()); - } - - // The IsBackgroundThread function returns false if the current thread is the app's main thread and true otherwise. - bool IsBackgroundThread() - { - return (_mainThreadId != GetCurrentThreadId()); - } - - // The RecordMainThread function registers the main thread ID for use by the IsMainThread and IsBackgroundThread functions. - void RecordMainThread() - { - _mainThreadId = GetCurrentThreadId(); - } - -#ifdef __cplusplus -} -#endif - -#endif /* not NDEBUG */ - -mupdf_cpp::MainPage::MainPage() -{ - InitializeComponent(); - Application::Current->Suspending += - ref new SuspendingEventHandler(this, &MainPage::App_Suspending); - m_textcolor="#402572AC"; - m_linkcolor="#40AC7225"; - mu_doc = nullptr; - m_docPages = ref new Platform::Collections::Vector<DocumentPage^>(); - m_thumbnails = ref new Platform::Collections::Vector<DocumentPage^>(); - m_page_link_list = ref new Platform::Collections::Vector<IVector<RectList^>^>(); - m_text_list = ref new Platform::Collections::Vector<RectList^>(); - m_linkset = ref new Platform::Collections::Vector<int>(); - CleanUp(); - RecordMainThread(); - /* So that we can catch special loading events (e.g. open with) */ - _pageLoadedHandlerToken = Loaded += ref new RoutedEventHandler(this, &MainPage::Page_Loaded); -} - -/* Used during launch of application from file */ -void MainPage::Page_Loaded(Object^ sender, RoutedEventArgs^ e) -{ - MainPage^ rootPage = dynamic_cast<MainPage^>(sender); - if (rootPage->FileEvent != nullptr) - { - /* Launched with an "open with", or as default app */ - if (rootPage->FileEvent->Files->Size > 0) - { - IStorageItem ^file = rootPage->FileEvent->Files->GetAt(0); - StorageFile ^sfile = safe_cast<StorageFile^>(file); - - OpenDocumentPrep(sfile); - } - } -} - -/// <summary> -/// Invoked when this page is about to be displayed in a Frame. -/// </summary> -/// <param name="e">Event data that describes how this page was reached. The Parameter -/// property is typically used to configure the page.</param> -void MainPage::OnNavigatedTo(NavigationEventArgs^ e) -{ - -} - -void mupdf_cpp::MainPage::App_Suspending(Object^ sender, SuspendingEventArgs^ e) -{ - -} - -void mupdf_cpp::MainPage::ExitInvokedHandler(Windows::UI::Popups::IUICommand^ command) -{ - -} - -void mupdf_cpp::MainPage::OKInvokedHandler(Windows::UI::Popups::IUICommand^ command) -{ - -} - -void mupdf_cpp::MainPage::NotifyUser(String^ strMessage, NotifyType_t type) -{ - MessageDialog^ msg = ref new MessageDialog(strMessage); - UICommand^ ExitCommand = nullptr; - UICommand^ OKCommand = nullptr; - - switch (type) - { - case StatusMessage: - OKCommand = ref new UICommand("OK", - ref new UICommandInvokedHandler(this, &mupdf_cpp::MainPage::OKInvokedHandler)); - msg->Commands->Append(OKCommand); - /// Set the command that will be invoked by default - msg->DefaultCommandIndex = 0; - // Set the command to be invoked when escape is pressed - msg->CancelCommandIndex = 1; - break; - case ErrorMessage: - ExitCommand = ref new UICommand("Exit", - ref new UICommandInvokedHandler(this, &mupdf_cpp::MainPage::ExitInvokedHandler)); - msg->Commands->Append(ExitCommand); - /// Set the command that will be invoked by default - msg->DefaultCommandIndex = 0; - // Set the command to be invoked when escape is pressed - msg->CancelCommandIndex = 1; - break; - default: - break; - } - // Show the message dialog - msg->ShowAsync(); -} - -bool mupdf_cpp::MainPage::EnsureUnsnapped() -{ - // FilePicker APIs will not work if the application is in a snapped state. - // If an app wants to show a FilePicker while snapped, it must attempt to unsnap first - - bool unsnapped = (ApplicationView::Value != ApplicationViewState::Snapped || - ApplicationView::TryUnsnap()); - if (!unsnapped) - { - NotifyUser("Cannot unsnap the application", StatusMessage); - } - return unsnapped; -} - -void mupdf_cpp::MainPage::Picker(Platform::Object^ sender, Windows::UI::Xaml::RoutedEventArgs^ e) -{ - if (!EnsureUnsnapped()) - return; - - FileOpenPicker^ openPicker = ref new FileOpenPicker(); - openPicker->ViewMode = PickerViewMode::List; - openPicker->SuggestedStartLocation = PickerLocationId::DocumentsLibrary; - openPicker->FileTypeFilter->Append(".pdf"); - openPicker->FileTypeFilter->Append(".xps"); - openPicker->FileTypeFilter->Append(".cbz"); - openPicker->FileTypeFilter->Append(".oxps"); - - create_task(openPicker->PickSingleFileAsync()).then([this](StorageFile^ file) - { - if (file) - { - this->OpenDocumentPrep(file); - } - else - { - /* Nothing selected */ - } - }); -} - -/* Set the page with the new raster information */ -void MainPage::UpdatePage(int page_num, InMemoryRandomAccessStream^ ras, - Point ras_size, Page_Content_t content_type) -{ - assert(IsMainThread()); - - WriteableBitmap ^bmp = ref new WriteableBitmap(ras_size.X, ras_size.Y); - bmp->SetSource(ras); - - DocumentPage^ doc_page = ref new DocumentPage(); - doc_page->Image = bmp; - - if (content_type == THUMBNAIL) - { - doc_page->Height = ras_size.Y / SCALE_THUMB; - doc_page->Width = ras_size.X / SCALE_THUMB; - } - else - { - doc_page->Height = ras_size.Y; - doc_page->Width = ras_size.X; - } - doc_page->Content = content_type; - - /* We do not want flipview change notification to occur for ourselves */ - m_page_update = true; - this->m_docPages->SetAt(page_num, doc_page); - m_page_update = false; -} - -/* Set the page with the new raster information but only the image data */ -void MainPage::ReplaceImage(int page_num, InMemoryRandomAccessStream^ ras, - Point ras_size) -{ - assert(IsMainThread()); - - WriteableBitmap ^bmp = ref new WriteableBitmap(ras_size.X, ras_size.Y); - bmp->SetSource(ras); - - DocumentPage^ doc_page = this->m_docPages->GetAt(page_num); - doc_page->Image = bmp; - - doc_page->Height = ras_size.Y; - doc_page->Width = ras_size.X; -} - -Point MainPage::ComputePageSize(spatial_info_t spatial_info, int page_num) -{ - Point screenSize; - Point pageSize; - Point size = mu_doc->GetPageSize(page_num); - - screenSize = spatial_info.size; - screenSize.Y *= screenScale; - screenSize.X *= screenScale; - - float hscale = screenSize.X / size.X; - float vscale = screenSize.Y / size.Y; - float scale = min(hscale, vscale); - pageSize.X = size.X * scale * spatial_info.scale_factor; - pageSize.Y = size.Y * scale * spatial_info.scale_factor; - - return pageSize; -} - -static Point fitPageToScreen(Point page, Point screen) -{ - Point pageSize; - - float hscale = screen.X / page.X; - float vscale = screen.Y / page.Y; - float scale = min(hscale, vscale); - pageSize.X = floorf(page.X * scale) / page.X; - pageSize.Y = floorf(page.Y * scale) / page.Y; - - return pageSize; -} - -spatial_info_t MainPage::InitSpatial(double scale) -{ - spatial_info_t value; - - value.size.Y = this->ActualHeight; - value.size.X = this->ActualWidth; - value.scale_factor = scale; - - return value; -} - -void Prepare_bmp(int width, int height, DataWriter ^dw) -{ - int row_size = width * 4; - int bmp_size = row_size * height + 54; - - dw->WriteString("BM"); - dw->ByteOrder = ByteOrder::LittleEndian; - dw->WriteInt32(bmp_size); - dw->WriteInt16(0); - dw->WriteInt16(0); - dw->WriteInt32(54); - dw->WriteInt32(40); - dw->WriteInt32(width); - dw->WriteInt32(height); - dw->WriteInt16(1); - dw->WriteInt16(32); - dw->WriteInt32(0); - dw->WriteInt32(row_size * height); - dw->WriteInt32(2835); - dw->WriteInt32(2835); - dw->WriteInt32(0); - dw->WriteInt32(0); -} - -void MainPage::ReleasePages(int old_page, int new_page) -{ - if (old_page == new_page) return; - /* To keep from having memory issue reset the page back to - the thumb if we are done rendering the thumbnails */ - for (int k = old_page - LOOK_AHEAD; k <= old_page + LOOK_AHEAD; k++) - { - if (k < new_page - LOOK_AHEAD || k > new_page + LOOK_AHEAD) - { - if (k >= 0 && k < this->m_num_pages) - { - SetThumb(k, true); - } - } - } -} - -/* Return this page from a full res image to the thumb image or only set - to thumb if it has not already been set */ -void MainPage::SetThumb(int page_num, bool replace) -{ - /* See what is there now */ - auto doc = this->m_docPages->GetAt(page_num); - if (doc->Content == THUMBNAIL) return; - if (doc->Content == FULL_RESOLUTION && replace == false) return; - - if (this->m_thumbnails->Size > page_num) - { - m_page_update = true; - this->m_docPages->SetAt(page_num, this->m_thumbnails->GetAt(page_num)); - m_page_update = false; - } -} - -/* Create white image for us to use as place holder in large document for flip - view filling instead of the thumbnail image */ -void MainPage::CreateBlank(int width, int height) -{ - Array<unsigned char>^ bmp_data = ref new Array<unsigned char>(height * 4 * width); - /* Set up the memory stream */ - WriteableBitmap ^bmp = ref new WriteableBitmap(width, height); - InMemoryRandomAccessStream ^ras = ref new InMemoryRandomAccessStream(); - DataWriter ^dw = ref new DataWriter(ras->GetOutputStreamAt(0)); - /* Go ahead and write our header data into the memory stream */ - Prepare_bmp(width, height, dw); - - /* Set the data to all white */ - memset(bmp_data->Data, 255, height * 4 * width); - - /* Write the data */ - dw->WriteBytes(bmp_data); - - DataWriterStoreOperation^ result = dw->StoreAsync(); - /* Block on the Async call */ - while(result->Status != AsyncStatus::Completed) { - } - /* And store in a the image brush */ - bmp->SetSource(ras); - m_BlankBmp = bmp; -} - -void mupdf_cpp::MainPage::SetFlipView() -{ - int height = this->ActualHeight; - int width = this->ActualWidth; - - CreateBlank(BLANK_WIDTH, BLANK_HEIGHT); - /* Set the current flip view mode */ - if (height > width) - this->m_curr_flipView = xaml_vert_flipView; - else - this->m_curr_flipView = xaml_horiz_flipView; -} - -/* Clean up everything as we are opening a new document after having another - one open */ -void mupdf_cpp::MainPage::CleanUp() -{ - m_init_done = false; - /* Remove current pages in the flipviews */ - if (m_docPages != nullptr && m_docPages->Size > 0) - m_docPages->Clear(); - if (m_thumbnails != nullptr && m_thumbnails->Size > 0) - m_thumbnails->Clear(); - /* With the ref counting this should not leak */ - if (m_page_link_list != nullptr && m_page_link_list->Size > 0) - m_page_link_list->Clear(); - if (m_text_list->Size > 0) - m_text_list->Clear(); - if (m_linkset != nullptr && m_linkset->Size > 0) - m_linkset->Clear(); - - if (this->mu_doc != nullptr) - mu_doc->CleanUp(); - - mu_doc = ref new mudocument(); - if (mu_doc == nullptr) - throw ref new FailureException("Document allocation failed!"); - - this->m_curr_flipView = nullptr; - m_currpage = -1; - m_file_open = false; - m_slider_min = 0; - m_slider_max = 0; - m_memory_use = 0; - m_insearch = false; - m_search_active = false; - m_sliderchange = false; - m_flip_from_searchlink = false; - m_num_pages = -1; - m_search_rect_count = 0; - m_ren_status = REN_AVAILABLE; - m_links_on = false; - m_rectlist_page = -1; - m_Progress = 0.0; - - this->xaml_PageSlider->Minimum = m_slider_min; - this->xaml_PageSlider->Maximum = m_slider_max; - this->xaml_PageSlider->IsEnabled = false; -} - -/* Create the thumbnail images */ -void mupdf_cpp::MainPage::RenderThumbs() -{ - spatial_info_t spatial_info = this->InitSpatial(1); - int num_pages = this->m_num_pages; - cancellation_token_source cts; - auto token = cts.get_token(); - m_ThumbCancel = cts; - auto ui = task_continuation_context::use_current(); - - this->m_ren_status = REN_THUMBS; - Vector<DocumentPage^>^ thumbnails = m_thumbnails; - auto task_thumb = create_task([spatial_info, num_pages, thumbnails, this, ui, token]()-> int - { - spatial_info_t spatial_info_local = spatial_info; - spatial_info_local.scale_factor = SCALE_THUMB; - - for (int k = 0; k < num_pages; k++) - { - Point ras_size = ComputePageSize(spatial_info_local, k); - auto task2 = create_task(mu_doc->RenderPageAsync(k, ras_size.X, ras_size.Y, false)); - - task2.then([this, k, thumbnails, ras_size](InMemoryRandomAccessStream^ ras) - { - assert(IsMainThread()); - WriteableBitmap ^bmp = ref new WriteableBitmap(ras_size.X, ras_size.Y); - bmp->SetSource(ras); - DocumentPage^ doc_page = ref new DocumentPage(); - doc_page->Image = bmp; - doc_page->Height = ras_size.Y / SCALE_THUMB; - doc_page->Width = ras_size.X / SCALE_THUMB; - doc_page->Content = THUMBNAIL; - doc_page->TextBox = nullptr; - doc_page->LinkBox = nullptr; - if (m_init_done) - { - m_thumbnails->SetAt(k, doc_page); /* This avoids out of order returns from task */ - if (k < THUMB_PREADD) /* Flip view gets overwhelmed if I don't do this */ - SetThumb(k, false); - } - }, ui).then([this] (task<void> t) - { - try - { - t.get(); - } - catch(Platform::InvalidArgumentException^ e) - { - //TODO handle error. - } - }, token); //end task chain */ - - /* If cancelled then save the last one as the continuation will not - have occured. */ - if (is_task_cancellation_requested()) - { - cancel_current_task(); - } - } - return num_pages; /* all done with thumbnails! */ - }, token).then([this](task<int> the_task) - { - /* Finish adding them, but not if we were cancelled. */ - bool is_cancelled = false; - try - { - the_task.get(); - } - catch (const task_canceled& e) - { - (void) e; // Unused parameter - is_cancelled = true; - } - if (!is_cancelled) - { - for (int k = THUMB_PREADD; k < m_num_pages; k++) - SetThumb(k, false); - } - this->m_ren_status = REN_AVAILABLE; - }, task_continuation_context::use_current()); - -} - -void mupdf_cpp::MainPage::OpenDocumentPrep(StorageFile^ file) -{ - if (this->m_num_pages != -1) - { - m_init_done = false; - - /* Set the index to the start of the document */ - this->xaml_vert_flipView->SelectedIndex = 0; - this->xaml_horiz_flipView->SelectedIndex = 0; - - /* If the thumbnail thread is running then we need to end that first */ - RenderingStatus_t *ren_status = &m_ren_status; - cancellation_token_source *ThumbCancel = &m_ThumbCancel; - - /* Create a task to wait until the renderer is available, then clean up then open */ - auto t = create_task([ren_status, ThumbCancel]()->int - { - if (*ren_status == REN_THUMBS) - ThumbCancel->cancel(); - while (*ren_status != REN_AVAILABLE) { - } - return 0; - }).then([this](task<int> the_task) - { - CleanUp(); - return 0; - }, task_continuation_context::use_current()).then([this, file](task<int> the_task) - { - OpenDocument(file); - }, task_continuation_context::use_current()); - } - else - { - OpenDocument(file); - } -} - -void mupdf_cpp::MainPage::OpenDocument(StorageFile^ file) -{ - this->SetFlipView(); - - /* Open document and when open, push on */ - auto open_task = create_task(mu_doc->OpenFileAsync(file)); - open_task.then([this](int code) -> int - { - assert(IsMainThread()); - if (code != S_ISOK) - { - return code; - } - /* We need to check if password is required */ - if (mu_doc->RequiresPassword()) - { - xaml_PasswordStack->Visibility = Windows::UI::Xaml::Visibility::Visible; - return E_NEEDPASSWORD; - } - else - { - xaml_PasswordStack->Visibility = Windows::UI::Xaml::Visibility::Collapsed; - return S_ISOK; - } - }).then([this](int code)->int - { - assert(IsMainThread()); - if (code == S_ISOK) - InitialRender(); - return code; - }, task_continuation_context::use_current()).then([this](int code) - { - if (code == S_ISOK) - RenderThumbs(); - else - { - if (code != E_NEEDPASSWORD) - { - NotifyUser("Sorry, an issue was encountered in opening file", - StatusMessage); - } - } - }, task_continuation_context::use_current()); -} - -void mupdf_cpp::MainPage::InitialRender() -{ - assert(IsMainThread()); - m_num_pages = mu_doc->GetNumPages(); - - if ((m_currpage) >= m_num_pages) - { - m_currpage = m_num_pages - 1; - } - else if (m_currpage < 0) - { - m_currpage = 0; - } - - /* Initialize all the flipvew items with blanks and the thumbnails. */ - for (int k = 0; k < m_num_pages; k++) - { - /* Blank pages */ - DocumentPage^ doc_page = ref new DocumentPage(); - doc_page->Image = m_BlankBmp; - doc_page->Height = BLANK_HEIGHT; - doc_page->Width = BLANK_WIDTH; - doc_page->Content = DUMMY; - doc_page->TextBox = nullptr; - doc_page->LinkBox = nullptr; - m_docPages->Append(doc_page); - m_thumbnails->Append(doc_page); - /* Create empty lists for our links and specify that they have - not been computed for these pages */ - Vector<RectList^>^ temp_link = ref new Vector<RectList^>(); - m_page_link_list->Append(temp_link); - m_linkset->Append(false); - } - - this->xaml_horiz_flipView->ItemsSource = m_docPages; - this->xaml_vert_flipView->ItemsSource = m_docPages; - - /* Do the first few pages, then start the thumbs */ - spatial_info_t spatial_info = InitSpatial(1); - for (int k = 0; k < LOOK_AHEAD + 2; k++) - { - if (m_num_pages > k ) - { - Point ras_size = ComputePageSize(spatial_info, k); - - auto render_task = - create_task(mu_doc->RenderPageAsync(k, ras_size.X, ras_size.Y, true)); - - render_task.then([this, k, ras_size] (InMemoryRandomAccessStream^ ras) - { - UpdatePage(k, ras, ras_size, FULL_RESOLUTION); - }, task_continuation_context::use_current()); - } - } - - /* Update the slider settings, if more than one page */ - if (m_num_pages > 1) - { - this->xaml_PageSlider->Maximum = m_num_pages; - this->xaml_PageSlider->Minimum = 1; - this->xaml_PageSlider->IsEnabled = true; - } - else - { - this->xaml_PageSlider->Maximum = 0; - this->xaml_PageSlider->Minimum = 0; - this->xaml_PageSlider->IsEnabled = false; - } - - /* All done with initial pages */ - this->m_init_done = true; -} - -void mupdf_cpp::MainPage::RenderRange(int curr_page) -{ - /* Render +/- the look ahead from where we are if blank page is present */ - spatial_info_t spatial_info = InitSpatial(1); - bool curr_page_rendered = true; - int range = LOOK_AHEAD; - - assert(IsMainThread()); - if (m_flip_from_searchlink) - range = 0; - for (int k = curr_page - LOOK_AHEAD; k <= curr_page + LOOK_AHEAD; k++) - { - if (k >= 0 && k < m_num_pages) - { - /* Check if page is already rendered */ - auto doc = this->m_docPages->GetAt(k); - if (doc->Content != FULL_RESOLUTION) - { - Point ras_size = ComputePageSize(spatial_info, k); - auto render_task = - create_task(mu_doc->RenderPageAsync(k, ras_size.X, ras_size.Y, true)); - - render_task.then([this, k, ras_size] (InMemoryRandomAccessStream^ ras) - { - UpdatePage(k, ras, ras_size, FULL_RESOLUTION); - }, task_continuation_context::use_current()).then([this, k, curr_page]() - { - if (k == curr_page && this->m_links_on) - AddLinkCanvas(); - if (k == curr_page && this->m_text_list->Size > 0 && - m_flip_from_searchlink) - { - AddTextCanvas(); - m_flip_from_searchlink = false; - } - },task_continuation_context::use_current()); - } - else - { - /* We did not need to render the curr_page, so add links below if - needed. Otherwise, we need to wait for the task above to - complete before we add the links. */ - if (k == curr_page) - curr_page_rendered = false; - } - } - } - m_currpage = curr_page; - if (this->m_links_on && !curr_page_rendered) - AddLinkCanvas(); - if (this->m_text_list->Size > 0 && !curr_page_rendered && m_flip_from_searchlink) - { - AddTextCanvas(); - m_flip_from_searchlink = false; - } -} - -void mupdf_cpp::MainPage::Slider_ValueChanged(Platform::Object^ sender, Windows::UI::Xaml::Controls::Primitives::RangeBaseValueChangedEventArgs^ e) -{ - int newValue = (int) this->xaml_PageSlider->Value - 1; /* zero based */ - - if (IsNotStandardView()) - return; - - if (m_update_flip) - { - m_update_flip = false; - return; - } - if (m_init_done && this->xaml_PageSlider->IsEnabled) - { - /* Make sure to clear any text search */ - auto doc_old = this->m_docPages->GetAt(m_currpage); - doc_old->TextBox = nullptr; - - auto doc = this->m_docPages->GetAt(newValue); - if (doc->Content != FULL_RESOLUTION) - { - spatial_info_t spatial_info = InitSpatial(1); - Point ras_size = ComputePageSize(spatial_info, newValue); - auto render_task = - create_task(mu_doc->RenderPageAsync(newValue, ras_size.X, ras_size.Y, true)); - - render_task.then([this, newValue, ras_size] (InMemoryRandomAccessStream^ ras) - { - UpdatePage(newValue, ras, ras_size, FULL_RESOLUTION); - this->m_currpage = newValue; - m_sliderchange = true; - this->m_curr_flipView->SelectedIndex = newValue; - }, task_continuation_context::use_current()); - } - else - { - this->m_curr_flipView->SelectedIndex = newValue; - } - } -} - -void mupdf_cpp::MainPage::FlipView_SelectionChanged(Object^ sender, SelectionChangedEventArgs^ e) -{ - if (m_init_done && !m_page_update) - { - int pos = this->m_curr_flipView->SelectedIndex; - - if (pos >= 0) - { - m_update_flip = true; - if (xaml_PageSlider->IsEnabled) - { - xaml_PageSlider->Value = pos; - } - if (m_sliderchange) - { - m_sliderchange = false; - return; - } - else - { - /* Make sure to clear any text search */ - auto doc_old = this->m_docPages->GetAt(m_currpage); - doc_old->TextBox = nullptr; - } - /* Get the current page */ - int curr_page = this->m_currpage; - this->RenderRange(pos); - this->ReleasePages(curr_page, pos); - } - } -} - -/* Search Related Code */ -void mupdf_cpp::MainPage::Searcher(Platform::Object^ sender, Windows::UI::Xaml::RoutedEventArgs^ e) -{ - ShowSearchBox(); - UpdateAppBarButtonViewState(); -} - -void mupdf_cpp::MainPage::ShowSearchBox() -{ - /* Update the app bar so that we can do the search */ - StackPanel^ leftPanel = (StackPanel^) this->TopAppBar->FindName("LeftPanel"); - - if (leftPanel != nullptr && m_insearch) - { - m_insearch = false; - FindBox->Visibility = Windows::UI::Xaml::Visibility::Collapsed; - PrevSearch->Visibility = Windows::UI::Xaml::Visibility::Collapsed; - NextSearch->Visibility = Windows::UI::Xaml::Visibility::Collapsed; - } - else if (leftPanel != nullptr && !m_insearch) - { - /* Search is not going to work in snapped view for now to simplify UI - in this cramped case. So see if we can get out of snapped mode. */ - if (!EnsureUnsnapped()) - return; - - m_insearch = true; - FindBox->Visibility = Windows::UI::Xaml::Visibility::Visible; - PrevSearch->Visibility = Windows::UI::Xaml::Visibility::Visible; - NextSearch->Visibility = Windows::UI::Xaml::Visibility::Visible; - } -} - -void mupdf_cpp::MainPage::ClearTextSearch() -{ - /* Clear out any old search result */ - if (m_text_list->Size > 0) - m_text_list->Clear(); -} - -void mupdf_cpp::MainPage::ShowSearchResults(int page_num, int box_count) -{ - int old_page = this->m_currpage; - int new_page = page_num; - - ClearTextSearch(); - - /* Compute any scalings */ - Point screenSize; - Point pageSize; - Point scale; - - screenSize.Y = this->ActualHeight; - screenSize.X = this->ActualWidth; - screenSize.X *= screenScale; - screenSize.Y *= screenScale; - pageSize = mu_doc->GetPageSize(m_currpage); - scale = fitPageToScreen(pageSize, screenSize); - auto doc_page = this->m_docPages->GetAt(old_page); - - /* Construct our list of rectangles */ - for (int k = 0; k < box_count; k++) - { - RectList^ rect_item = ref new RectList(); - auto curr_box = mu_doc->GetTextSearch(k); - - rect_item->Color = m_textcolor; - rect_item->Height = curr_box->LowerRight.Y - curr_box->UpperLeft.Y; - rect_item->Width = curr_box->LowerRight.X - curr_box->UpperLeft.X; - rect_item->X = curr_box->UpperLeft.X * scale.X; - rect_item->Y = curr_box->UpperLeft.Y * scale.Y; - rect_item->Width *= (scale.X * doc_page->Zoom); - rect_item->Height *= (scale.Y * doc_page->Zoom); - rect_item->Index = k.ToString(); - m_text_list->Append(rect_item); - } - /* Make sure the current page has its text results cleared */ - doc_page->TextBox = nullptr; - - /* Go ahead and set our doc item to this in the vertical and horizontal view */ - m_searchpage = new_page; - m_flip_from_searchlink = true; - - if (old_page == new_page) - { - FlipView_SelectionChanged(nullptr, nullptr); - } - else - { - this->m_curr_flipView->SelectedIndex = new_page; - } - return; -} - -void mupdf_cpp::MainPage::SearchNext(Platform::Object^ sender, Windows::UI::Xaml::RoutedEventArgs^ e) -{ - if (IsNotStandardView()) - return; - - StackPanel^ leftPanel = (StackPanel^) this->TopAppBar->FindName("LeftPanel"); - TextBox^ findBox = (TextBox^) leftPanel->FindName("FindBox"); - String^ textToFind = findBox->Text; - - if (this->m_search_active == false && textToFind != nullptr) - SearchInDirection(1, textToFind); -} - -void mupdf_cpp::MainPage::SearchPrev(Platform::Object^ sender, Windows::UI::Xaml::RoutedEventArgs^ e) -{ - if (IsNotStandardView()) - return; - - StackPanel^ leftPanel = (StackPanel^) this->TopAppBar->FindName("LeftPanel"); - TextBox^ findBox = (TextBox^) leftPanel->FindName("FindBox"); - String^ textToFind = findBox->Text; - - if (this->m_search_active == false && textToFind != nullptr) - SearchInDirection(-1, textToFind); -} - -void mupdf_cpp::MainPage::CancelSearch(Platform::Object^ sender, Windows::UI::Xaml::RoutedEventArgs^ e) -{ - m_searchcts.cancel(); - xaml_ProgressStack->Visibility = Windows::UI::Xaml::Visibility::Collapsed; - this->m_search_active = false; -} - -void mupdf_cpp::MainPage::AddTextCanvas() -{ - /* Go ahead and set our doc item to this in the vertical and horizontal view */ - auto doc_page = this->m_docPages->GetAt(m_currpage); - assert(doc_page->Content == FULL_RESOLUTION); - if (doc_page->Content == FULL_RESOLUTION) // We should not be doing links for thumbnails - { - doc_page->TextBox = m_text_list; - } - this->m_search_active = false; -} - -void mupdf_cpp::MainPage::SearchProgress(IAsyncOperationWithProgress<int, double>^ operation, double status) -{ - xaml_Progress->Value = status; -} - -void mupdf_cpp::MainPage::SearchInDirection(int dir, String^ textToFind) -{ - cancellation_token_source cts; - auto token = cts.get_token(); - m_searchcts = cts; - int pos = m_currpage; - int start; - - if (m_searchpage == pos) - start = pos + dir; - else - start = pos; - - if (start < 0) - return; - if (start > this->m_num_pages - 1) - return; - this->m_search_active = true; - - ProgressBar^ my_xaml_Progress = (ProgressBar^) (this->FindName("xaml_Progress")); - xaml_ProgressStack->Visibility = Windows::UI::Xaml::Visibility::Visible; - auto temp = mu_doc->SearchDocumentWithProgressAsync(textToFind, dir, start); - temp->Progress = ref new AsyncOperationProgressHandler<int, double>(this, &MainPage::SearchProgress); - - auto search_task = create_task(temp, token); - - /* Do the continuation on the ui thread */ - auto con_task = search_task.then([this, textToFind](int page_num) - { - xaml_ProgressStack->Visibility = Windows::UI::Xaml::Visibility::Collapsed; - if (page_num == TEXT_NOT_FOUND) - { - auto str1 = "\"" + textToFind + "\" Was Not Found In The Search"; - NotifyUser(str1, StatusMessage); - this->m_search_active = false; - } - else - { - int box_count = mu_doc->TextSearchCount(); - - if (box_count > 0) - { - this->ShowSearchResults(page_num, box_count); - } - } - }, task_continuation_context::use_current()); -} - -/* This is here to handle when we rotate or go into the snapview mode */ -void mupdf_cpp::MainPage::GridSizeChanged() -{ - int height = this->ActualHeight; - int width = this->ActualWidth; - FlipView^ old_flip = m_curr_flipView; - - if (TopAppBar1->IsOpen) - { - UpdateAppBarButtonViewState(); - } - - if (height > width) - { - m_curr_flipView = this->xaml_vert_flipView; - this->xaml_zoomCanvas->Height = height; - this->xaml_zoomCanvas->Width = width; - this->m_curr_flipView->Height = height; - this->m_curr_flipView->Width = width; - - xaml_vert_flipView->IsEnabled = true; - xaml_vert_flipView->Opacity = 1; - xaml_horiz_flipView->IsEnabled = false; - xaml_horiz_flipView->Opacity = 0; - } - else - { - m_curr_flipView = this->xaml_horiz_flipView; - this->xaml_zoomCanvas->Height = height; - this->xaml_zoomCanvas->Width = width; - this->m_curr_flipView->Height = height; - this->m_curr_flipView->Width = width; - - xaml_horiz_flipView->IsEnabled = true; - xaml_horiz_flipView->Opacity = 1; - xaml_vert_flipView->IsEnabled = false; - xaml_vert_flipView->Opacity = 0; - } - - if (xaml_WebView->Visibility == Windows::UI::Xaml::Visibility::Visible) - { - int height = xaml_OutsideGrid->ActualHeight; - int height_app = TopAppBar1->ActualHeight; - - xaml_WebView->Height = height - height_app; - } - - UpDatePageSizes(); - - if (m_num_pages > 0 && old_flip != m_curr_flipView && old_flip != nullptr) - { - /* If links are on or off, we need to invalidate */ - ClearLinks(); - InvalidateLinks(); - auto doc = this->m_docPages->GetAt(m_currpage); - doc->Content = OLD_RESOLUTION; /* To force a rerender */ - this->m_curr_flipView->SelectedIndex = this->m_currpage; - FlipView_SelectionChanged(nullptr, nullptr); - } -} - -void mupdf_cpp::MainPage::UpDatePageSizes() -{ - /* Reset the thumb view scaling value */ - if (m_num_pages > 0) - { - int num_items = m_thumbnails->Size; - for (int i = 0; i < num_items; i++) - { - DocumentPage ^thumb_page = m_thumbnails->GetAt(i); - if (thumb_page != nullptr && thumb_page->Image != nullptr) - { - int curr_height = thumb_page->Height; - int curr_width = thumb_page->Width; - - double scale_x = (double) curr_height / (double) this->xaml_zoomCanvas->Height; - double scale_y = (double) curr_width / (double) this->xaml_zoomCanvas->Width; - - double min_scale = max(scale_x, scale_y); - thumb_page->Height = curr_height / min_scale; - thumb_page->Width = curr_width / min_scale; - } - } - } -}; - -/* Link related code */ -void mupdf_cpp::MainPage::Linker(Platform::Object^ sender, Windows::UI::Xaml::RoutedEventArgs^ e) -{ - m_links_on = !m_links_on; - - if (!m_init_done || IsNotStandardView()) - return; - if (m_links_on) - AddLinkCanvas(); - else - ClearLinks(); -} - -void mupdf_cpp::MainPage::ClearLinks() -{ - /* Make sure surrounding render pages lose their links */ - for (int k = m_currpage - LOOK_AHEAD; k <= m_currpage + LOOK_AHEAD; k++) - { - if (k >= 0 && k < m_num_pages) - { - auto doc_page = this->m_docPages->GetAt(k); - if (doc_page->Content == FULL_RESOLUTION) - { - doc_page->LinkBox = nullptr; - } - } - } -} - -void mupdf_cpp::MainPage::InvalidateLinks() -{ - for (int k = 0; k < m_num_pages; k++) - m_linkset->SetAt(k, false); -} - -/* Add in the link rects. If we have not already computed them then do that now */ -void mupdf_cpp::MainPage::AddLinkCanvas() -{ - /* See if the link object for this page has already been computed */ - int link_page = m_linkset->GetAt(m_currpage); - auto doc_page = this->m_docPages->GetAt(m_currpage); - - if (!link_page) - { - m_linkset->SetAt(m_currpage, true); - int num_links = mu_doc->ComputeLinks(m_currpage); - if (num_links == 0) return; - - Point screenSize; - Point pageSize; - Point scale; - - screenSize.Y = this->ActualHeight; - screenSize.X = this->ActualWidth; - screenSize.X *= screenScale; - screenSize.Y *= screenScale; - pageSize = mu_doc->GetPageSize(m_currpage); - scale = fitPageToScreen(pageSize, screenSize); - - /* Create a new RectList collection */ - auto link_list = ref new Platform::Collections::Vector<RectList^>(); - - /* Now add the rects */ - for (int k = 0; k < num_links; k++) - { - auto curr_link = mu_doc->GetLink(k); - if (curr_link->Type != NOT_SET) - { - RectList^ rect_item = ref new RectList(); - rect_item->Color = m_linkcolor; - rect_item->Height = curr_link->LowerRight.Y - curr_link->UpperLeft.Y; - rect_item->Width = curr_link->LowerRight.X - curr_link->UpperLeft.X; - rect_item->X = curr_link->UpperLeft.X * scale.X; - rect_item->Y = curr_link->UpperLeft.Y * scale.Y; - rect_item->Width *= (scale.X * doc_page->Zoom); - rect_item->Height *= (scale.Y * doc_page->Zoom); - rect_item->Type = curr_link->Type; - rect_item->Urilink = curr_link->Uri; - rect_item->PageNum = curr_link->PageNum; - rect_item->Index = k.ToString(); - link_list->Append(rect_item); - } - } - /* Now set it in our list of links */ - m_page_link_list->SetAt(m_currpage, link_list); - } - /* Go ahead and set our doc item to this in the vertical and horizontal view */ - if (doc_page->LinkBox == nullptr) - { - if (doc_page->Content == FULL_RESOLUTION) // We should not be doing links for thumbnails - { - doc_page->LinkBox = m_page_link_list->GetAt(m_currpage); - } - } -} - -/* A link was tapped */ -void mupdf_cpp::MainPage::LinkTapped(Platform::Object^ sender, Windows::UI::Xaml::Input::TappedRoutedEventArgs^ e) -{ - Rectangle^ rect = safe_cast<Rectangle^>(e->OriginalSource); - String^ str_index = safe_cast<String^>(rect->Tag); - int index = _wtof(str_index->Data()); - - if (index >= 0 && index < m_num_pages) - { - auto link_list = m_page_link_list->GetAt(m_currpage); - auto link = link_list->GetAt(index); - - if (link->Type == LINK_GOTO) - { - this->m_curr_flipView->SelectedIndex = link->PageNum; - } - else if (link->Type == LINK_URI) - { - // Set the option to show a warning - auto launchOptions = ref new Windows::System::LauncherOptions(); - launchOptions->TreatAsUntrusted = true; - - // Launch the URI with a warning prompt - concurrency::task<bool> launchUriOperation(Windows::System::Launcher::LaunchUriAsync(link->Urilink, launchOptions)); - launchUriOperation.then([](bool success) - { - if (success) - { - // URI launched - } - else - { - // URI launch failed - } - }); - } - } -} - -/* Bring up the contents */ -void mupdf_cpp::MainPage::ContentDisplay(Platform::Object^ sender, Windows::UI::Xaml::RoutedEventArgs^ e) -{ - if (this->m_num_pages < 0) - return; - - if (IsNotStandardView() && !this->xaml_ListView->IsEnabled) - return; - - if (this->xaml_ListView->IsEnabled) - { - this->xaml_ListView->Opacity = 0.0; - this->xaml_ListView->IsEnabled = false; - this->m_curr_flipView->Opacity = 1.0; - this->m_curr_flipView->IsEnabled = true; - this->xaml_PageSlider->IsEnabled = true; - } - else - { - if (xaml_ListView->Items->Size == 0) - { - int size_content = mu_doc->ComputeContents(); - /* Bring up the content now */ - for (int k = 0; k < size_content; k++) - { - ContentItem^ item = mu_doc->GetContent(k); - this->xaml_ListView->Items->Append(item); - } - if (size_content > 0) - { - this->xaml_ListView->Opacity = 1.0; - this->xaml_ListView->IsEnabled = true; - this->m_curr_flipView->Opacity = 0.0; - this->m_curr_flipView->IsEnabled = false; - this->xaml_PageSlider->IsEnabled = false; - } - } - else - { - this->xaml_ListView->Opacity = 1.0; - this->xaml_ListView->IsEnabled = true; - this->m_curr_flipView->Opacity = 0.0; - this->m_curr_flipView->IsEnabled = false; - this->xaml_PageSlider->IsEnabled = false; - } - } -} - -void mupdf_cpp::MainPage::ContentSelected(Platform::Object^ sender, Windows::UI::Xaml::Controls::ItemClickEventArgs^ e) -{ - ContentItem^ b = safe_cast<ContentItem^>(e->ClickedItem); - int newpage = b->Page; - - if (newpage > -1 && newpage < this->m_num_pages) - { - this->xaml_ListView->Opacity = 0.0; - this->xaml_ListView->IsEnabled = false; - this->m_curr_flipView->Opacity = 1.0; - this->m_curr_flipView->IsEnabled = true; - this->xaml_PageSlider->IsEnabled = true; - - int old_page = this->m_currpage; - this->m_curr_flipView->SelectedIndex = newpage; - this->m_currpage = newpage; - } -} - -void mupdf_cpp::MainPage::Reflower(Platform::Object^ sender, Windows::UI::Xaml::RoutedEventArgs^ e) -{ - if (this->m_num_pages < 0) return; - - if (xaml_WebView->Visibility == Windows::UI::Xaml::Visibility::Visible) - { - /* Go back to flip view */ - xaml_WebView->Visibility = Windows::UI::Xaml::Visibility::Collapsed; - this->xaml_MainGrid->Opacity = 1.0; - this->m_curr_flipView->IsEnabled = true; - this->xaml_PageSlider->IsEnabled = true; - xaml_WebView->Visibility = Windows::UI::Xaml::Visibility::Collapsed; - xaml_WebView->Opacity = 0.0; - - } - else if (this->m_curr_flipView->IsEnabled) - { - String^ html_string = mu_doc->ComputeHTML(this->m_currpage); - xaml_WebView->Visibility = Windows::UI::Xaml::Visibility::Visible; - this->xaml_MainGrid->Opacity = 0.0; - this->m_curr_flipView->IsEnabled = false; - this->xaml_PageSlider->IsEnabled = false; - this->xaml_WebView->NavigateToString(html_string); - this->xaml_WebView->Height = this->ActualHeight - 2 * this->BottomAppBar->ActualHeight; - /* Check if thumb rendering is done. If not then restart */ - } -} - -/* Need to handle resizing of app bar to make sure everything fits */ -void mupdf_cpp::MainPage::topAppBar_Loaded(Platform::Object^ sender, Windows::UI::Xaml::RoutedEventArgs^ e) -{ - /* Remove search box in snapped view as we don't have the room for it */ - if (ApplicationView::Value == ApplicationViewState::Snapped && m_insearch) - ShowSearchBox(); - UpdateAppBarButtonViewState(); -} - -void mupdf_cpp::MainPage::UpdateAppBarButtonViewState() -{ - String ^viewState = Windows::UI::ViewManagement::ApplicationView::Value.ToString(); - VisualStateManager::GoToState(Search, viewState, true); - VisualStateManager::GoToState(Contents, viewState, true); - VisualStateManager::GoToState(Links, viewState, true); - VisualStateManager::GoToState(Reflow, viewState, true); - VisualStateManager::GoToState(ZoomIn, viewState, true); - VisualStateManager::GoToState(ZoomOut, viewState, true); - VisualStateManager::GoToState(PrevSearch, viewState, true); - VisualStateManager::GoToState(NextSearch, viewState, true); -} - -/* Manipulation zooming with touch input */ -void mupdf_cpp::MainPage::ScrollChanged(Platform::Object^ sender, - Windows::UI::Xaml::Controls::ScrollViewerViewChangedEventArgs^ e) -{ - ScrollViewer^ scrollviewer = safe_cast<ScrollViewer^> (sender); - auto doc_page = this->m_docPages->GetAt(m_currpage); - - if (scrollviewer->ZoomFactor == doc_page->Zoom) - return; - - if (!e->IsIntermediate) - { - doc_page->Zoom = scrollviewer->ZoomFactor; - int page = m_currpage; - - /* Render at new resolution */ - spatial_info_t spatial_info = InitSpatial(doc_page->Zoom); - Point ras_size = ComputePageSize(spatial_info, page); - - /* Go ahead and create display list if we dont have one for this page */ - auto render_task = - create_task(mu_doc->RenderPageAsync(page, ras_size.X, ras_size.Y, true)); - render_task.then([this, page, ras_size] (InMemoryRandomAccessStream^ ras) - { - ReplaceImage(page, ras, ras_size); - }, task_continuation_context::use_current()); - } -} - -/* Needed to find scrollviewer child from template of flipview item */ -Windows::UI::Xaml::FrameworkElement^ FindVisualChildByName(DependencyObject^ obj, String^ name) -{ - FrameworkElement^ ret; - if (obj == nullptr) return nullptr; - - int numChildren = VisualTreeHelper::GetChildrenCount(obj); - - for (int i = 0; i < numChildren; i++) - { - auto objChild = VisualTreeHelper::GetChild(obj, i); - auto child = safe_cast<FrameworkElement^>(objChild); - if (child != nullptr && child->Name == name) - { - return child; - } - ret = FindVisualChildByName(objChild, name); - if (ret != nullptr) - break; - } - return ret; -} - -void mupdf_cpp::MainPage::ZoomInPress(Platform::Object^ sender, Windows::UI::Xaml::RoutedEventArgs^ e) -{ - if (!m_init_done || IsNotStandardView()) return; - NonTouchZoom(ZOOM_IN); -} - -void mupdf_cpp::MainPage::ZoomOutPress(Platform::Object^ sender, Windows::UI::Xaml::RoutedEventArgs^ e) -{ - if (!m_init_done || IsNotStandardView()) return; - NonTouchZoom(ZOOM_OUT); -} - -void MainPage::NonTouchZoom(int zoom) -{ - ScrollViewer^ scrollviewer; - FlipViewItem^ item = safe_cast<FlipViewItem^> - (m_curr_flipView->ItemContainerGenerator->ContainerFromIndex(m_currpage)); - auto item2 = m_curr_flipView->ItemContainerGenerator->ContainerFromIndex(m_currpage); - - /* We don't know which one so check for both */ - ScrollViewer^ t1 = - safe_cast<ScrollViewer^> (FindVisualChildByName(item2, "xaml_ScrollView_v")); - ScrollViewer^ t2 = - safe_cast<ScrollViewer^> (FindVisualChildByName(item2, "xaml_ScrollView_h")); - - if (t1 != nullptr) - scrollviewer = t1; - else - scrollviewer = t2; - - if (scrollviewer == nullptr) - return; - - double curr_zoom = scrollviewer->ZoomFactor; - if (zoom == ZOOM_IN) - { - curr_zoom = curr_zoom + KEYBOARD_ZOOM_STEP; - if (curr_zoom > ZOOM_MAX) curr_zoom = ZOOM_MAX; - } - else if (zoom == ZOOM_OUT) - { - curr_zoom = curr_zoom - KEYBOARD_ZOOM_STEP; - if (curr_zoom < ZOOM_MIN) curr_zoom = ZOOM_MIN; - } else - return; - - scrollviewer->ZoomToFactor(curr_zoom); -} - -/* Zoom in and out for keyboard only case. */ -void MainPage::OnKeyDown(KeyRoutedEventArgs^ e) -{ - if (!m_init_done || IsNotStandardView()) return; - - long val = (long) (e->Key); - - if (val == KEY_PLUS) - NonTouchZoom(ZOOM_IN); - else if (val == KEY_MINUS) - NonTouchZoom(ZOOM_OUT); - else - return; -} - -void mupdf_cpp::MainPage::PasswordOK(Platform::Object^ sender, Windows::UI::Xaml::RoutedEventArgs^ e) -{ - /* If password checks out then go ahead and start rendering */ - if (mu_doc->ApplyPassword(xaml_password->Password)) - { - xaml_password->Password = nullptr; - xaml_PasswordStack->Visibility = Windows::UI::Xaml::Visibility::Collapsed; - InitialRender(); - RenderThumbs(); - } - else - NotifyUser("Incorrect Password", StatusMessage); -} - -/* So that we know if we are in a standard view case and not in reflow, or - * content type */ -bool mupdf_cpp::MainPage::IsNotStandardView() -{ - return (this->xaml_ListView->Opacity == 1.0 || - xaml_WebView->Visibility == Windows::UI::Xaml::Visibility::Visible); -} |