#include <appview.h>

Inheritance diagram for CAppScrnshotPreview:

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Collaboration diagram for CAppScrnshotPreview:

[legend]

Public Member Functions
HWND	Create (HWND hParent)

VOID	PreviousDisplayCleanup ()

VOID	DisplayEmpty ()

BOOL	DisplayImage (LPCWSTR lpszLocation)

int	GetRequestedWidth (int Height)

	CAppScrnshotPreview (const CStringW &BasePath)

	~CAppScrnshotPreview ()

Public Member Functions inherited from ATL::CWindowImpl< CAppScrnshotPreview >
HWND	Create (HWND hWndParent, _U_RECT rect=NULL, LPCTSTR szWindowName=NULL, DWORD dwStyle=0, DWORD dwExStyle=0, _U_MENUorID MenuOrID=0U, LPVOID lpCreateParam=NULL)

Public Member Functions inherited from ATL::CWindowImplBaseT< TBase, TWinTraits >
	CWindowImplBaseT ()

virtual void	OnFinalMessage (HWND)

BOOL	SubclassWindow (HWND hWnd)

HWND	UnsubclassWindow (BOOL bForce=FALSE)

virtual WNDPROC	GetWindowProc ()

LRESULT	DefWindowProc (UINT uMsg, WPARAM wParam, LPARAM lParam)

HWND	Create (HWND hWndParent, _U_RECT rect, LPCTSTR szWindowName, DWORD dwStyle, DWORD dwExStyle, _U_MENUorID MenuOrID, ATOM atom, LPVOID lpCreateParam)

Public Member Functions inherited from ATL::CWindowImplRoot< TBase >
	CWindowImplRoot ()

virtual	~CWindowImplRoot ()

Public Member Functions inherited from ATL::CWindow
	CWindow (HWND hWnd=NULL)

	operator HWND () const

UINT	ArrangeIconicWindows ()

void	Attach (HWND hWndNew)

HDC	BeginPaint (LPPAINTSTRUCT lpPaint)

BOOL	BringWindowToTop ()

BOOL	CenterWindow (HWND hWndCenter=NULL)

BOOL	ChangeClipboardChain (HWND hWndNewNext)

BOOL	CheckDlgButton (int nIDButton, UINT nCheck)

BOOL	CheckRadioButton (int nIDFirstButton, int nIDLastButton, int nIDCheckButton)

HWND	ChildWindowFromPoint (POINT point) const

HWND	ChildWindowFromPointEx (POINT point, UINT uFlags) const

BOOL	ClientToScreen (LPPOINT lpPoint) const

BOOL	ClientToScreen (LPRECT lpRect) const

HWND	Create (LPCTSTR lpstrWndClass, HWND hWndParent, _U_RECT rect=NULL, LPCTSTR szWindowName=NULL, DWORD dwStyle=0, DWORD dwExStyle=0, _U_MENUorID MenuOrID=0U, LPVOID lpCreateParam=NULL)

BOOL	CreateCaret (HBITMAP pBitmap)

BOOL	CreateGrayCaret (int nWidth, int nHeight)

BOOL	CreateSolidCaret (int nWidth, int nHeight)

HDWP	DeferWindowPos (HDWP hWinPosInfo, HWND hWndInsertAfter, int x, int y, int cx, int cy, UINT uFlags)

BOOL	DestroyWindow ()

HWND	Detach ()

int	DlgDirList (LPTSTR lpPathSpec, int nIDListBox, int nIDStaticPath, UINT nFileType)

int	DlgDirListComboBox (LPTSTR lpPathSpec, int nIDComboBox, int nIDStaticPath, UINT nFileType)

BOOL	DlgDirSelect (LPTSTR lpString, int nCount, int nIDListBox)

BOOL	DlgDirSelectComboBox (LPTSTR lpString, int nCount, int nIDComboBox)

void	DragAcceptFiles (BOOL bAccept=TRUE)

BOOL	DrawMenuBar ()

BOOL	EnableScrollBar (UINT uSBFlags, UINT uArrowFlags=ESB_ENABLE_BOTH)

BOOL	EnableWindow (BOOL bEnable=TRUE)

void	EndPaint (LPPAINTSTRUCT lpPaint)

BOOL	FlashWindow (BOOL bInvert)

BOOL	GetClientRect (LPRECT lpRect) const

HDC	GetDC ()

HDC	GetDCEx (HRGN hRgnClip, DWORD flags)

HWND	GetDescendantWindow (int nID) const

HRESULT	GetDlgControl (int nID, REFIID iid, void **ppCtrl)

int	GetDlgCtrlID () const

HRESULT	GetDlgHost (int nID, REFIID iid, void **ppHost)

HWND	GetDlgItem (_In_ int nID) const

UINT	GetDlgItemInt (_In_ int nID, _Out_opt_ BOOL *lpTrans=NULL, _In_ BOOL bSigned=TRUE) const

UINT	GetDlgItemText (_In_ int nID, _Out_writes_to_(nMaxCount, return+1) LPTSTR lpStr, _In_ int nMaxCount) const

BOOL	GetDlgItemText (_In_ int nID, _Inout_ _Outref_result_maybenull_ _Post_z_ BSTR &bstrText) const

DWORD	GetExStyle () const

HFONT	GetFont () const

DWORD	GetHotKey () const

HICON	GetIcon (BOOL bBigIcon=TRUE) const

HWND	GetLastActivePopup () const

HMENU	GetMenu () const

HWND	GetNextDlgGroupItem (HWND hWndCtl, BOOL bPrevious=FALSE) const

HWND	GetNextDlgTabItem (HWND hWndCtl, BOOL bPrevious=FALSE) const

CWindow	GetParent () const

BOOL	GetScrollInfo (int nBar, LPSCROLLINFO lpScrollInfo)

BOOL	GetScrollPos (int nBar)

BOOL	GetScrollRange (int nBar, LPINT lpMinPos, LPINT lpMaxPos) const

DWORD	GetStyle () const

HMENU	GetSystemMenu (BOOL bRevert)

HWND	GetTopLevelParent () const

HWND	GetTopLevelWindow () const

HWND	GetTopWindow () const

BOOL	GetUpdateRect (LPRECT lpRect, BOOL bErase=FALSE)

int	GetUpdateRgn (HRGN hRgn, BOOL bErase=FALSE)

HWND	GetWindow (UINT nCmd) const

DWORD	GetWindowContextHelpId () const

HDC	GetWindowDC ()

LONG	GetWindowLong (int nIndex) const

LONG_PTR	GetWindowLongPtr (int nIndex) const

BOOL	GetWindowPlacement (WINDOWPLACEMENT *lpwndpl) const

DWORD	GetWindowProcessID ()

BOOL	GetWindowRect (LPRECT lpRect) const

int	GetWindowRgn (HRGN hRgn)

int	GetWindowText (_Out_writes_to_(nMaxCount, return+1) LPTSTR lpszStringBuf, _In_ int nMaxCount) const

BOOL	GetWindowText (_Inout_ _Outref_result_maybenull_ _Post_z_ BSTR &bstrText) const

int	GetWindowTextLength () const

DWORD	GetWindowThreadID ()

WORD	GetWindowWord (int nIndex) const

void	GotoDlgCtrl (HWND hWndCtrl) const

BOOL	HideCaret ()

BOOL	HiliteMenuItem (HMENU hMenu, UINT uHiliteItem, UINT uHilite)

BOOL	Invalidate (BOOL bErase=TRUE)

BOOL	InvalidateRect (LPCRECT lpRect, BOOL bErase=TRUE)

void	InvalidateRgn (HRGN hRgn, BOOL bErase=TRUE)

BOOL	IsChild (const HWND hWnd) const

BOOL	IsDialogMessage (LPMSG lpMsg)

UINT	IsDlgButtonChecked (int nIDButton) const

BOOL	IsIconic () const

BOOL	IsParentDialog ()

BOOL	IsWindow () const

BOOL	IsWindowEnabled () const

BOOL	IsWindowVisible () const

BOOL	IsWindowUnicode ()

BOOL	IsZoomed () const

BOOL	KillTimer (UINT_PTR nIDEvent)

BOOL	LockWindowUpdate (BOOL bLock=TRUE)

int	MapWindowPoints (HWND hWndTo, LPPOINT lpPoint, UINT nCount) const

int	MapWindowPoints (HWND hWndTo, LPRECT lpRect) const

int	MessageBox (LPCTSTR lpszText, LPCTSTR lpszCaption=NULL, UINT nType=MB_OK)

BOOL	ModifyStyle (DWORD dwRemove, DWORD dwAdd, UINT nFlags=0)

BOOL	ModifyStyleEx (DWORD dwRemove, DWORD dwAdd, UINT nFlags=0)

BOOL	MoveWindow (int x, int y, int nWidth, int nHeight, BOOL bRepaint=TRUE)

void	NextDlgCtrl () const

BOOL	OpenClipboard ()

BOOL	PostMessage (UINT message, WPARAM wParam=0, LPARAM lParam=0)

void	PrevDlgCtrl () const

void	Print (HDC hDC, DWORD dwFlags) const

void	PrintClient (HDC hDC, DWORD dwFlags) const

BOOL	RedrawWindow (LPCRECT lpRectUpdate=NULL, HRGN hRgnUpdate=NULL, UINT flags=RDW_INVALIDATE\|RDW_UPDATENOW\|RDW_ERASE)

int	ReleaseDC (HDC hDC)

BOOL	ResizeClient (int nWidth, int nHeight, BOOL bRedraw=FALSE)

BOOL	ScreenToClient (LPPOINT lpPoint) const

BOOL	ScrollWindow (int xAmount, int yAmount, LPCRECT lpRect=NULL, LPCRECT lpClipRect=NULL)

int	ScrollWindowEx (int dx, int dy, LPCRECT lpRectScroll, LPCRECT lpRectClip, HRGN hRgnUpdate, LPRECT lpRectUpdate, UINT flags)

LRESULT	SendDlgItemMessage (int nID, UINT message, WPARAM wParam=0, LPARAM lParam=0)

LRESULT	SendMessage (UINT message, WPARAM wParam=0, LPARAM lParam=0)

void	SendMessageToDescendants (UINT message, WPARAM wParam=0, LPARAM lParam=0, BOOL bDeep=TRUE)

BOOL	SendNotifyMessage (UINT message, WPARAM wParam=0, LPARAM lParam=0)

HWND	SetActiveWindow ()

HWND	SetCapture ()

HWND	SetClipboardViewer ()

int	SetDlgCtrlID (int nID)

BOOL	SetDlgItemInt (int nID, UINT nValue, BOOL bSigned=TRUE)

BOOL	SetDlgItemText (int nID, LPCTSTR lpszString)

HWND	SetFocus ()

void	SetFont (HFONT hFont, BOOL bRedraw=TRUE)

int	SetHotKey (WORD wVirtualKeyCode, WORD wModifiers)

HICON	SetIcon (HICON hIcon, BOOL bBigIcon=TRUE)

BOOL	SetMenu (HMENU hMenu)

HWND	SetParent (HWND hWndNewParent)

void	SetRedraw (BOOL bRedraw=TRUE)

int	SetScrollInfo (int nBar, LPSCROLLINFO lpScrollInfo, BOOL bRedraw=TRUE)

int	SetScrollPos (int nBar, int nPos, BOOL bRedraw=TRUE)

BOOL	SetScrollRange (int nBar, int nMinPos, int nMaxPos, BOOL bRedraw=TRUE)

UINT_PTR	SetTimer (UINT_PTR nIDEvent, UINT nElapse, void(CALLBACK *lpfnTimer)(HWND, UINT, UINT_PTR, DWORD)=NULL)

BOOL	SetWindowContextHelpId (DWORD dwContextHelpId)

LONG	SetWindowLong (int nIndex, LONG dwNewLong)

LONG_PTR	SetWindowLongPtr (int nIndex, LONG_PTR dwNewLong)

BOOL	SetWindowPlacement (const WINDOWPLACEMENT *lpwndpl)

BOOL	SetWindowPos (HWND hWndInsertAfter, int x, int y, int cx, int cy, UINT nFlags)

int	SetWindowRgn (HRGN hRgn, BOOL bRedraw=FALSE)

BOOL	SetWindowText (LPCTSTR lpszString)

WORD	SetWindowWord (int nIndex, WORD wNewWord)

BOOL	ShowCaret ()

BOOL	ShowOwnedPopups (BOOL bShow=TRUE)

BOOL	ShowScrollBar (UINT nBar, BOOL bShow=TRUE)

BOOL	ShowWindow (int nCmdShow)

BOOL	ShowWindowAsync (int nCmdShow)

BOOL	UpdateWindow ()

BOOL	ValidateRect (LPCRECT lpRect)

BOOL	ValidateRgn (HRGN hRgn)

BOOL	WinHelp (LPCTSTR lpszHelp, UINT nCmd=HELP_CONTEXT, DWORD dwData=0)

virtual BOOL	ProcessWindowMessage (HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam, LRESULT &lResult, DWORD dwMsgMapID)=0

Static Public Member Functions
static ATL::CWndClassInfo &	GetWndClassInfo ()

Static Public Member Functions inherited from ATL::CWindowImpl< CAppScrnshotPreview >
static LPCTSTR	GetWndCaption ()

Static Public Member Functions inherited from ATL::CWindowImplBaseT< TBase, TWinTraits >
static DWORD	GetWndStyle (DWORD dwStyle)

static DWORD	GetWndExStyle (DWORD dwExStyle)

static LRESULT CALLBACK	StartWindowProc (HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam)

static LRESULT CALLBACK	WindowProc (HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam)

Static Public Member Functions inherited from ATL::CWindow
static LPCTSTR	GetWndClassName ()

static LRESULT	SendMessage (HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)

Private Member Functions
BOOL	ProcessWindowMessage (HWND hwnd, UINT Msg, WPARAM wParam, LPARAM lParam, LRESULT &theResult, DWORD dwMapId)

VOID	DisplayLoading ()

VOID	DisplayFailed ()

BOOL	DisplayFile (LPCWSTR lpszFileName)

VOID	SetStatus (SCRNSHOT_STATUS Status)

VOID	PaintOnDC (HDC hdc, int width, int height, BOOL bDrawBkgnd)

float	GetLoadingDotWidth (int width, int height)

float	GetFrameDotShift (int Frame, int width, int height)

Private Attributes
CStringW	m_BasePath

SCRNSHOT_STATUS	ScrnshotPrevStauts = SCRNSHOT_PREV_EMPTY

Gdiplus::Image *	pImage = NULL

HICON	hBrokenImgIcon = NULL

BOOL	bLoadingTimerOn = FALSE

int	LoadingAnimationFrame = 0

int	BrokenImgSize = BROKENIMG_ICON_SIZE

pASYNCINET	AsyncInet = NULL

LONGLONG	ContentID = 0

CStringW	TempImagePath

Additional Inherited Members
Public Types inherited from ATL::CWindowImplRoot< TBase >
enum	{ WINSTATE_DESTROYED = 0x00000001 }

Public Attributes inherited from ATL::CWindowImplBaseT< TBase, TWinTraits >
WNDPROC	m_pfnSuperWindowProc

Public Attributes inherited from ATL::CWindowImplRoot< TBase >
CWndProcThunk	m_thunk

const _ATL_MSG *	m_pCurrentMsg

DWORD	m_dwState

Public Attributes inherited from ATL::CWindow
HWND	m_hWnd

Static Public Attributes inherited from ATL::CWindow
static RECT	rcDefault

Detailed Description

Definition at line 97 of file appview.h.

Constructor & Destructor Documentation

◆ CAppScrnshotPreview()

CAppScrnshotPreview::CAppScrnshotPreview ( const CStringW & BasePath )

Definition at line 352 of file appview.cpp.

                                                                 : m_BasePath(BasePath)
{
}

◆ ~CAppScrnshotPreview()

CAppScrnshotPreview::~CAppScrnshotPreview ( )

Definition at line 767 of file appview.cpp.

{
    PreviousDisplayCleanup();
}

Member Function Documentation

◆ Create()

HWND CAppScrnshotPreview::Create ( HWND hParent )

Definition at line 636 of file appview.cpp.

{
    RECT r = {0, 0, 0, 0};
 
    return CWindowImpl::Create(hParent, r, L"", WS_CHILD | WS_VISIBLE);
}

Referenced by CAppInfoDisplay::ProcessWindowMessage().

◆ DisplayEmpty()

VOID CAppScrnshotPreview::DisplayEmpty ( )

Definition at line 669 of file appview.cpp.

{
    InterlockedIncrement64(&ContentID);
    SetStatus(SCRNSHOT_PREV_EMPTY);
    PreviousDisplayCleanup();
}

Referenced by CAppInfoDisplay::SetWelcomeText(), and CAppInfoDisplay::ShowAppInfo().

◆ DisplayFailed()

VOID CAppScrnshotPreview::DisplayFailed ( )

private

Definition at line 494 of file appview.cpp.

{
    InterlockedIncrement64(&ContentID);
    SetStatus(SCRNSHOT_PREV_FAILED);
    PreviousDisplayCleanup();
}

Referenced by DisplayFile(), DisplayImage(), and ProcessWindowMessage().

◆ DisplayFile()

BOOL CAppScrnshotPreview::DisplayFile ( LPCWSTR lpszFileName )

private

Definition at line 502 of file appview.cpp.

{
    PreviousDisplayCleanup();
    SetStatus(SCRNSHOT_PREV_IMAGE);
    pImage = Bitmap::FromFile(lpszFileName, 0);
    if (pImage->GetLastStatus() != Ok)
    {
        DisplayFailed();
        return FALSE;
    }
    return TRUE;
}

Referenced by DisplayImage(), and ProcessWindowMessage().

◆ DisplayImage()

BOOL CAppScrnshotPreview::DisplayImage ( LPCWSTR lpszLocation )

Definition at line 677 of file appview.cpp.

{
    LONGLONG ID = InterlockedIncrement64(&ContentID);
    PreviousDisplayCleanup();
 
    if (PathIsURLW(lpszLocation))
    {
        DisplayLoading();
 
        ScrnshotDownloadParam *DownloadParam = new ScrnshotDownloadParam;
        if (!DownloadParam)
            return FALSE;
 
        DownloadParam->hwndNotify = m_hWnd;
        DownloadParam->ID = ID;
        // generate a filename
        CStringW ScrnshotFolder = m_BasePath;
        PathAppendW(ScrnshotFolder.GetBuffer(MAX_PATH), L"screenshots");
        ScrnshotFolder.ReleaseBuffer();
 
        if (!PathIsDirectoryW(ScrnshotFolder.GetString()))
        {
            CreateDirectoryW(ScrnshotFolder.GetString(), NULL);
        }
 
        if (!GetTempFileNameW(
                ScrnshotFolder.GetString(), L"img", 0, DownloadParam->DownloadFileName.GetBuffer(MAX_PATH)))
        {
            DownloadParam->DownloadFileName.ReleaseBuffer();
            delete DownloadParam;
            DisplayFailed();
            return FALSE;
        }
        DownloadParam->DownloadFileName.ReleaseBuffer();
 
        DownloadParam->hFile = CreateFileW(
            DownloadParam->DownloadFileName.GetString(), GENERIC_WRITE, 0, NULL, CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL,
            NULL);
        if (DownloadParam->hFile == INVALID_HANDLE_VALUE)
        {
            delete DownloadParam;
            DisplayFailed();
            return FALSE;
        }
 
        AsyncInet = AsyncInetDownload(
            0, INTERNET_OPEN_TYPE_PRECONFIG, 0, 0, lpszLocation, TRUE, ScrnshotDownloadCallback, DownloadParam);
        if (!AsyncInet)
        {
            CloseHandle(DownloadParam->hFile);
            DeleteFileW(DownloadParam->DownloadFileName.GetBuffer());
            delete DownloadParam;
            DisplayFailed();
            return FALSE;
        }
        return TRUE;
    }
    else
    {
        return DisplayFile(lpszLocation);
    }
}

Referenced by CAppInfoDisplay::ShowAppInfo().

◆ DisplayLoading()

VOID CAppScrnshotPreview::DisplayLoading ( )

private

Definition at line 481 of file appview.cpp.

{
    SetStatus(SCRNSHOT_PREV_LOADING);
    if (bLoadingTimerOn)
    {
        KillTimer(TIMER_LOADING_ANIMATION);
    }
    LoadingAnimationFrame = 0;
    bLoadingTimerOn = TRUE;
    SetTimer(TIMER_LOADING_ANIMATION, 1000 / LOADING_ANIMATION_FPS, 0);
}

Referenced by DisplayImage().

◆ GetFrameDotShift()

float CAppScrnshotPreview::GetFrameDotShift	(	int	Frame,
		int	width,
		int	height
	)

private

Definition at line 612 of file appview.cpp.

{
    return min(width, height) * (1.0 / 16.0) * (2.0 / (2.0 - sqrt(3.0))) *
           (max(sin((float)Frame * 2 * PI / (LOADING_ANIMATION_PERIOD * LOADING_ANIMATION_FPS)), sqrt(3.0) / 2.0) -
            sqrt(3.0) / 2.0);
}

Referenced by PaintOnDC().

◆ GetLoadingDotWidth()

float CAppScrnshotPreview::GetLoadingDotWidth	(	int	width,
		int	height
	)

private

Definition at line 606 of file appview.cpp.

{
    return min(width, height) / 20.0;
}

Referenced by PaintOnDC().

◆ GetRequestedWidth()

int CAppScrnshotPreview::GetRequestedWidth ( int Height )

Definition at line 741 of file appview.cpp.

{
    switch (ScrnshotPrevStauts)
    {
        case SCRNSHOT_PREV_EMPTY:
            return 0;
        case SCRNSHOT_PREV_LOADING:
            return 200;
        case SCRNSHOT_PREV_IMAGE:
            if (pImage)
            {
                // return the width needed to display image inside the window.
                // and always keep window w/h ratio inside [ 1/SCRNSHOT_MAX_ASPECT_RAT, SCRNSHOT_MAX_ASPECT_RAT ]
                return (int)floor(
                    (float)Height *
                    max(min((float)pImage->GetWidth() / (float)pImage->GetHeight(), (float)SCRNSHOT_MAX_ASPECT_RAT),
                        1.0 / (float)SCRNSHOT_MAX_ASPECT_RAT));
            }
            return 0;
        case SCRNSHOT_PREV_FAILED:
            return 200;
        default:
            return 0;
    }
}

Referenced by CAppInfoDisplay::ResizeChildren().

◆ GetWndClassInfo()

ATL::CWndClassInfo & CAppScrnshotPreview::GetWndClassInfo ( )

static

Definition at line 620 of file appview.cpp.

{
    DWORD csStyle = CS_VREDRAW | CS_HREDRAW;
    static ATL::CWndClassInfo wc = {
        {sizeof(WNDCLASSEX), csStyle, StartWindowProc, 0, 0, NULL, 0, LoadCursorW(NULL, IDC_ARROW),
         (HBRUSH)(COLOR_BTNFACE + 1), 0, L"RAppsScrnshotPreview", NULL},
        NULL,
        NULL,
        IDC_ARROW,
        TRUE,
        0,
        _T("")};
    return wc;
}

◆ PaintOnDC()

VOID CAppScrnshotPreview::PaintOnDC	(	HDC	hdc,
		int	width,
		int	height,
		BOOL	bDrawBkgnd
	)

private

Definition at line 522 of file appview.cpp.

{
    // use an off screen dc to avoid blinking
    HDC hdcMem = CreateCompatibleDC(hdc);
    HBITMAP hBitmap = CreateCompatibleBitmap(hdc, width, height);
    SelectObject(hdcMem, hBitmap);
 
    if (bDrawBkgnd)
    {
        HBRUSH hOldBrush = (HBRUSH)SelectObject(hdcMem, (HGDIOBJ)GetSysColorBrush(COLOR_BTNFACE));
        PatBlt(hdcMem, 0, 0, width, height, PATCOPY);
        SelectObject(hdcMem, hOldBrush);
    }
 
    switch (ScrnshotPrevStauts)
    {
        case SCRNSHOT_PREV_EMPTY:
        {
        }
        break;
 
        case SCRNSHOT_PREV_LOADING:
        {
            Graphics graphics(hdcMem);
            Color color(255, 0, 0);
            SolidBrush dotBrush(Color(255, 100, 100, 100));
 
            graphics.SetSmoothingMode(SmoothingMode::SmoothingModeAntiAlias);
 
            // Paint three dot
            float DotWidth = GetLoadingDotWidth(width, height);
            graphics.FillEllipse(
                (Brush *)(&dotBrush), (REAL)width / 2.0 - min(width, height) * 2.0 / 16.0 - DotWidth / 2.0,
                (REAL)height / 2.0 -
                    GetFrameDotShift(LoadingAnimationFrame + LOADING_ANIMATION_FPS / 4, width, height) - DotWidth / 2.0,
                DotWidth, DotWidth);
 
            graphics.FillEllipse(
                (Brush *)(&dotBrush), (REAL)width / 2.0 - DotWidth / 2.0,
                (REAL)height / 2.0 - GetFrameDotShift(LoadingAnimationFrame, width, height) - DotWidth / 2.0, DotWidth,
                DotWidth);
 
            graphics.FillEllipse(
                (Brush *)(&dotBrush), (REAL)width / 2.0 + min(width, height) * 2.0 / 16.0 - DotWidth / 2.0,
                (REAL)height / 2.0 -
                    GetFrameDotShift(LoadingAnimationFrame - LOADING_ANIMATION_FPS / 4, width, height) - DotWidth / 2.0,
                DotWidth, DotWidth);
        }
        break;
 
        case SCRNSHOT_PREV_IMAGE:
        {
            if (pImage)
            {
                // always draw entire image inside the window.
                Graphics graphics(hdcMem);
                float ZoomRatio =
                    min(((float)width / (float)pImage->GetWidth()), ((float)height / (float)pImage->GetHeight()));
                float ZoomedImgWidth = ZoomRatio * (float)pImage->GetWidth();
                float ZoomedImgHeight = ZoomRatio * (float)pImage->GetHeight();
 
                graphics.DrawImage(
                    pImage, ((float)width - ZoomedImgWidth) / 2.0, ((float)height - ZoomedImgHeight) / 2.0,
                    ZoomedImgWidth, ZoomedImgHeight);
            }
        }
        break;
 
        case SCRNSHOT_PREV_FAILED:
        {
            DrawIconEx(
                hdcMem, (width - BrokenImgSize) / 2, (height - BrokenImgSize) / 2, hBrokenImgIcon, BrokenImgSize,
                BrokenImgSize, NULL, NULL, DI_NORMAL | DI_COMPAT);
        }
        break;
    }
 
    // copy the content form off-screen dc to hdc
    BitBlt(hdc, 0, 0, width, height, hdcMem, 0, 0, SRCCOPY);
    DeleteDC(hdcMem);
    DeleteObject(hBitmap);
}

Referenced by ProcessWindowMessage().

◆ PreviousDisplayCleanup()

VOID CAppScrnshotPreview::PreviousDisplayCleanup ( )

Definition at line 644 of file appview.cpp.

{
    if (bLoadingTimerOn)
    {
        KillTimer(TIMER_LOADING_ANIMATION);
        bLoadingTimerOn = FALSE;
    }
    LoadingAnimationFrame = 0;
    if (pImage)
    {
        delete pImage;
        pImage = NULL;
    }
    if (AsyncInet)
    {
        AsyncInetCancel(AsyncInet);
    }
    if (!TempImagePath.IsEmpty())
    {
        DeleteFileW(TempImagePath.GetString());
        TempImagePath.Empty();
    }
}

Referenced by DisplayEmpty(), DisplayFailed(), DisplayFile(), DisplayImage(), ProcessWindowMessage(), and ~CAppScrnshotPreview().

◆ ProcessWindowMessage()

BOOL CAppScrnshotPreview::ProcessWindowMessage	(	HWND	hwnd,
		UINT	Msg,
		WPARAM	wParam,
		LPARAM	lParam,
		LRESULT &	theResult,
		DWORD	dwMapId
	)

privatevirtual

Implements ATL::CMessageMap.

Definition at line 357 of file appview.cpp.

{
    theResult = 0;
    switch (Msg)
    {
        case WM_CREATE:
            hBrokenImgIcon =
                (HICON)LoadImage(hInst, MAKEINTRESOURCE(IDI_BROKEN_IMAGE), IMAGE_ICON, BrokenImgSize, BrokenImgSize, 0);
            break;
        case WM_SIZE:
        {
            if (BrokenImgSize != min(min(GET_X_LPARAM(lParam), GET_Y_LPARAM(lParam)), BROKENIMG_ICON_SIZE))
            {
                BrokenImgSize = min(min(GET_X_LPARAM(lParam), GET_Y_LPARAM(lParam)), BROKENIMG_ICON_SIZE);
 
                if (hBrokenImgIcon)
                {
                    DeleteObject(hBrokenImgIcon);
                    hBrokenImgIcon = (HICON)LoadImage(
                        hInst, MAKEINTRESOURCE(IDI_BROKEN_IMAGE), IMAGE_ICON, BrokenImgSize, BrokenImgSize, 0);
                }
            }
            break;
        }
        case WM_RAPPS_DOWNLOAD_COMPLETE:
        {
            ScrnshotDownloadParam *DownloadParam = (ScrnshotDownloadParam *)lParam;
            AsyncInetRelease(AsyncInet);
            AsyncInet = NULL;
            switch (wParam)
            {
                case ERROR_SUCCESS:
                    if (ContentID == DownloadParam->ID)
                    {
                        DisplayFile(DownloadParam->DownloadFileName);
                        // send a message to trigger resizing
                        ::SendMessageW(::GetParent(m_hWnd), WM_RAPPS_RESIZE_CHILDREN, 0, 0);
                        InvalidateRect(0, 0);
                        TempImagePath =
                            DownloadParam->DownloadFileName; // record tmp file path in order to delete it when cleanup
                    }
                    else
                    {
                        // the picture downloaded is already outdated. delete it.
                        DeleteFileW(DownloadParam->DownloadFileName);
                    }
                    break;
                case ERROR_CANCELLED:
                    DeleteFileW(DownloadParam->DownloadFileName);
                    break;
                default:
                    DisplayFailed();
                    // send a message to trigger resizing
                    ::SendMessageW(::GetParent(m_hWnd), WM_RAPPS_RESIZE_CHILDREN, 0, 0);
                    InvalidateRect(0, 0);
                    DeleteFileW(DownloadParam->DownloadFileName);
                    break;
            }
            delete DownloadParam;
            break;
        }
        case WM_PAINT:
        {
            PAINTSTRUCT ps;
            HDC hdc = BeginPaint(&ps);
            CRect rect;
            GetClientRect(&rect);
 
            PaintOnDC(hdc, rect.Width(), rect.Height(), ps.fErase);
 
            EndPaint(&ps);
            break;
        }
        case WM_PRINTCLIENT:
        {
            if (lParam & PRF_CHECKVISIBLE)
            {
                if (!IsWindowVisible())
                    break;
            }
            CRect rect;
            GetClientRect(&rect);
 
            PaintOnDC((HDC)wParam, rect.Width(), rect.Height(), lParam & PRF_ERASEBKGND);
            break;
        }
        case WM_ERASEBKGND:
        {
            return TRUE; // do not erase to avoid blinking
        }
        case WM_TIMER:
        {
            switch (wParam)
            {
                case TIMER_LOADING_ANIMATION:
                    LoadingAnimationFrame++;
                    LoadingAnimationFrame %= (LOADING_ANIMATION_PERIOD * LOADING_ANIMATION_FPS);
                    HDC hdc = GetDC();
                    CRect rect;
                    GetClientRect(&rect);
 
                    PaintOnDC(hdc, rect.Width(), rect.Height(), TRUE);
                    ReleaseDC(hdc);
            }
            break;
        }
        case WM_DESTROY:
        {
            PreviousDisplayCleanup();
            DeleteObject(hBrokenImgIcon);
            hBrokenImgIcon = NULL;
            break;
        }
    }
    return FALSE;
}

◆ SetStatus()

VOID CAppScrnshotPreview::SetStatus ( SCRNSHOT_STATUS Status )

private

Definition at line 516 of file appview.cpp.

{
    ScrnshotPrevStauts = Status;
}

Referenced by DisplayEmpty(), DisplayFailed(), DisplayFile(), and DisplayLoading().

Member Data Documentation

◆ AsyncInet

pASYNCINET CAppScrnshotPreview::AsyncInet = NULL

private

Definition at line 107 of file appview.h.

Referenced by DisplayImage(), PreviousDisplayCleanup(), and ProcessWindowMessage().

◆ bLoadingTimerOn

BOOL CAppScrnshotPreview::bLoadingTimerOn = FALSE

private

Definition at line 104 of file appview.h.

Referenced by DisplayLoading(), and PreviousDisplayCleanup().

◆ BrokenImgSize

int CAppScrnshotPreview::BrokenImgSize = BROKENIMG_ICON_SIZE

private

Definition at line 106 of file appview.h.

Referenced by PaintOnDC(), and ProcessWindowMessage().

◆ ContentID

LONGLONG CAppScrnshotPreview::ContentID = 0

private

Definition at line 108 of file appview.h.

Referenced by DisplayEmpty(), DisplayFailed(), DisplayImage(), and ProcessWindowMessage().

◆ hBrokenImgIcon

HICON CAppScrnshotPreview::hBrokenImgIcon = NULL

private

Definition at line 103 of file appview.h.

Referenced by PaintOnDC(), and ProcessWindowMessage().

◆ LoadingAnimationFrame

int CAppScrnshotPreview::LoadingAnimationFrame = 0

private

Definition at line 105 of file appview.h.

Referenced by DisplayLoading(), PaintOnDC(), PreviousDisplayCleanup(), and ProcessWindowMessage().

◆ m_BasePath

CStringW CAppScrnshotPreview::m_BasePath

private

Definition at line 100 of file appview.h.

Referenced by DisplayImage().

◆ pImage

Gdiplus::Image* CAppScrnshotPreview::pImage = NULL

private

Definition at line 102 of file appview.h.

Referenced by DisplayFile(), GetRequestedWidth(), PaintOnDC(), and PreviousDisplayCleanup().

◆ ScrnshotPrevStauts

SCRNSHOT_STATUS CAppScrnshotPreview::ScrnshotPrevStauts = SCRNSHOT_PREV_EMPTY

private

Definition at line 101 of file appview.h.

Referenced by GetRequestedWidth(), PaintOnDC(), and SetStatus().

◆ TempImagePath

CStringW CAppScrnshotPreview::TempImagePath

private

Definition at line 110 of file appview.h.

Referenced by PreviousDisplayCleanup(), and ProcessWindowMessage().

The documentation for this class was generated from the following files:

base/applications/rapps/include/appview.h
base/applications/rapps/appview.cpp

Public Member Functions

Static Public Member Functions

Private Member Functions

Private Attributes

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ CAppScrnshotPreview()

◆ ~CAppScrnshotPreview()

Member Function Documentation

◆ Create()

◆ DisplayEmpty()

◆ DisplayFailed()

◆ DisplayFile()

◆ DisplayImage()

◆ DisplayLoading()

◆ GetFrameDotShift()

◆ GetLoadingDotWidth()

◆ GetRequestedWidth()

◆ GetWndClassInfo()

◆ PaintOnDC()

◆ PreviousDisplayCleanup()

◆ ProcessWindowMessage()

◆ SetStatus()

Member Data Documentation

◆ AsyncInet

◆ bLoadingTimerOn

◆ BrokenImgSize

◆ ContentID

◆ hBrokenImgIcon

◆ LoadingAnimationFrame

◆ m_BasePath

◆ pImage

◆ ScrnshotPrevStauts

◆ TempImagePath