appview.h

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#pragma once

#include "rapps.h"
#include "rosui.h"
#include "crichedit.h"
#include "asyncinet.h"

#include <shlobj_undoc.h>
#include <shlguid_undoc.h>

#include <atlbase.h>
#include <atlcom.h>
#include <atltypes.h>
#include <atlwin.h>
#include <wininet.h>
#include <shellutils.h>
#include <rosctrls.h>
#include <gdiplus.h>
#include <math.h>

using namespace Gdiplus;

#define LISTVIEW_ICON_SIZE 32

// default broken-image icon size
#define BROKENIMG_ICON_SIZE 96

// the boundary of w/h ratio of scrnshot preview window
#define SCRNSHOT_MAX_ASPECT_RAT 2.5

// padding between scrnshot preview and richedit (in pixel)
#define INFO_DISPLAY_PADDING 10

// minimum width of richedit
#define RICHEDIT_MIN_WIDTH 160

// padding between controls in toolbar
#define TOOLBAR_PADDING 6

// user-defined window message
#define WM_RAPPS_DOWNLOAD_COMPLETE (WM_USER + 1) // notify download complete. wParam is error code, and lParam is a pointer to ScrnshotDownloadParam
#define WM_RAPPS_RESIZE_CHILDREN   (WM_USER + 2) // ask parent window to resize children.

enum SCRNSHOT_STATUS
{
    SCRNSHOT_PREV_EMPTY,      // show nothing
    SCRNSHOT_PREV_LOADING,    // image is loading (most likely downloading)
    SCRNSHOT_PREV_IMAGE,       // display image from a file
    SCRNSHOT_PREV_FAILED      // image can not be shown (download failure or wrong image)
};

#define TIMER_LOADING_ANIMATION 1 // Timer ID

#define LOADING_ANIMATION_PERIOD 3 // Animation cycling period (in seconds)
#define LOADING_ANIMATION_FPS 18 // Animation Frame Per Second


#define PI 3.1415927

// retrieve the value using a mask
#define STATEIMAGETOINDEX(x) (((x) & LVIS_STATEIMAGEMASK) >> 12)

// for listview with extend style LVS_EX_CHECKBOXES, State image 1 is the unchecked box, and state image 2 is the checked box.
// see this: https://docs.microsoft.com/en-us/windows/win32/controls/extended-list-view-styles
#define STATEIMAGE_UNCHECKED 1
#define STATEIMAGE_CHECKED 2

class CMainWindow;

enum APPLICATION_VIEW_TYPE
{
    AppViewTypeEmpty,
    AppViewTypeAvailableApps,
    AppViewTypeInstalledApps
};

typedef struct __ScrnshotDownloadParam
{
    LONGLONG ID;
    HANDLE hFile;
    HWND hwndNotify;
    ATL::CStringW DownloadFileName;
} ScrnshotDownloadParam;


class CAppRichEdit :
    public CUiWindow<CRichEdit>
{
private:
    VOID LoadAndInsertText(UINT uStringID,
        const ATL::CStringW &szText,
        DWORD StringFlags,
        DWORD TextFlags);

    VOID LoadAndInsertText(UINT uStringID,
        DWORD StringFlags);

    VOID InsertVersionInfo(CAvailableApplicationInfo *Info);

    VOID InsertLicenseInfo(CAvailableApplicationInfo *Info);

    VOID InsertLanguageInfo(CAvailableApplicationInfo *Info);

public:
    BOOL ShowAvailableAppInfo(CAvailableApplicationInfo *Info);

    inline VOID InsertTextWithString(UINT StringID, DWORD StringFlags, const ATL::CStringW &Text, DWORD TextFlags);

    BOOL ShowInstalledAppInfo(CInstalledApplicationInfo *Info);

    VOID SetWelcomeText();
};

int ScrnshotDownloadCallback(
    pASYNCINET AsyncInet,
    ASYNC_EVENT Event,
    WPARAM wParam,
    LPARAM lParam,
    VOID *Extension
);

class CAppScrnshotPreview :
    public CWindowImpl<CAppScrnshotPreview>
{
private:

    SCRNSHOT_STATUS ScrnshotPrevStauts = SCRNSHOT_PREV_EMPTY;
    Image *pImage = NULL;
    HICON hBrokenImgIcon = NULL;
    BOOL bLoadingTimerOn = FALSE;
    int LoadingAnimationFrame = 0;
    int BrokenImgSize = BROKENIMG_ICON_SIZE;
    pASYNCINET AsyncInet = NULL;
    LONGLONG ContentID = 0; // used to determine whether image has been switched when download complete. Increase by 1 each time the content of this window changed
    ATL::CStringW TempImagePath; // currently displayed temp file

    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);

public:
    static ATL::CWndClassInfo &GetWndClassInfo();

    HWND Create(HWND hParent);

    VOID PreviousDisplayCleanup();

    VOID DisplayEmpty();

    BOOL DisplayImage(LPCWSTR lpszLocation);

    // calculate requested window width by given height
    int GetRequestedWidth(int Height);

    ~CAppScrnshotPreview();
};

class CAppInfoDisplay :
    public CUiWindow<CWindowImpl<CAppInfoDisplay>>
{
    LPWSTR pLink = NULL;

private:
    BOOL ProcessWindowMessage(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam, LRESULT &theResult, DWORD dwMapId);

    VOID ResizeChildren();

    VOID ResizeChildren(int Width, int Height);

    VOID OnLink(ENLINK *Link);

public:

    CAppRichEdit *RichEdit = NULL;
    CAppScrnshotPreview *ScrnshotPrev = NULL;

    static ATL::CWndClassInfo &GetWndClassInfo();

    HWND Create(HWND hwndParent);

    BOOL ShowAvailableAppInfo(CAvailableApplicationInfo *Info);

    BOOL ShowInstalledAppInfo(CInstalledApplicationInfo *Info);

    VOID SetWelcomeText();

    VOID OnCommand(WPARAM wParam, LPARAM lParam);

    ~CAppInfoDisplay();
};

class CAppsListView :
    public CUiWindow<CListView>
{
    struct SortContext
    {
        CAppsListView *lvw;
        INT iSubItem;
    };

    BOOL bIsAscending = TRUE;
    BOOL bHasCheckboxes = FALSE;

    INT ItemCount = 0;
    INT CheckedItemCount = 0;
    INT ColumnCount = 0;

    INT nLastHeaderID = -1;

    APPLICATION_VIEW_TYPE ApplicationViewType = AppViewTypeEmpty;

    HIMAGELIST m_hImageListView = NULL;

public:
    CAppsListView();
    ~CAppsListView();

    VOID SetCheckboxesVisible(BOOL bIsVisible);

    VOID ColumnClick(LPNMLISTVIEW pnmv);

    BOOL AddColumn(INT Index, ATL::CStringW &Text, INT Width, INT Format);

    int AddColumn(INT Index, LPWSTR lpText, INT Width, INT Format);

    void DeleteColumn(INT Index);

    INT AddItem(INT ItemIndex, INT IconIndex, LPCWSTR lpText, LPARAM lParam);

    HIMAGELIST GetImageList(int iImageList);

    static INT CALLBACK s_CompareFunc(LPARAM lParam1, LPARAM lParam2, LPARAM lParamSort);

    INT CompareFunc(LPARAM lParam1, LPARAM lParam2, INT iSubItem);

    HWND Create(HWND hwndParent);

    BOOL GetCheckState(INT item);

    VOID SetCheckState(INT item, BOOL fCheck);

    VOID CheckAll();

    PVOID GetFocusedItemData();

    BOOL SetDisplayAppType(APPLICATION_VIEW_TYPE AppType);

    BOOL SetViewMode(DWORD ViewMode);

    BOOL AddInstalledApplication(CInstalledApplicationInfo *InstAppInfo, LPVOID CallbackParam);

    BOOL AddAvailableApplication(CAvailableApplicationInfo *AvlbAppInfo, BOOL InitCheckState, LPVOID CallbackParam);

    // this function is called when parent window receiving an notification about checkstate changing
    VOID ItemCheckStateNotify(int iItem, BOOL bCheck);
};

class CMainToolbar :
    public CUiWindow< CToolbar<> >
{
    const INT m_iToolbarHeight;
    DWORD m_dButtonsWidthMax;

    WCHAR szInstallBtn[MAX_STR_LEN];
    WCHAR szUninstallBtn[MAX_STR_LEN];
    WCHAR szModifyBtn[MAX_STR_LEN];
    WCHAR szSelectAll[MAX_STR_LEN];

    VOID AddImageToImageList(HIMAGELIST hImageList, UINT ImageIndex);

    HIMAGELIST InitImageList();

public:

    CMainToolbar();

    VOID OnGetDispInfo(LPTOOLTIPTEXT lpttt);

    HWND Create(HWND hwndParent);

    VOID HideButtonCaption();

    VOID ShowButtonCaption();

    DWORD GetMaxButtonsWidth() const;
};

class CSearchBar :
    public CWindow
{
public:
    const INT m_Width;
    const INT m_Height;

    CSearchBar();

    VOID SetText(LPCWSTR lpszText);

    HWND Create(HWND hwndParent);

};

class CComboBox :
    public CWindow
{
    // ID refers to different types of view
    enum
    { m_AppDisplayTypeDetails, m_AppDisplayTypeList, m_AppDisplayTypeTile };

    // string ID for different. this should correspond with the enum above.
    const UINT m_TypeStringID[3] =
    { IDS_APP_DISPLAY_DETAILS, IDS_APP_DISPLAY_LIST, IDS_APP_DISPLAY_TILE };

    const int m_DefaultSelectType = m_AppDisplayTypeDetails;
public:

    int m_Width;
    int m_Height;

    CComboBox();

    HWND Create(HWND hwndParent);
};

class CApplicationView :
    public CUiWindow<CWindowImpl<CApplicationView>>
{
private:
    CUiPanel *m_Panel = NULL;
    CMainToolbar *m_Toolbar = NULL;
    CUiWindow<CComboBox> *m_ComboBox = NULL;
    CUiWindow<CSearchBar> *m_SearchBar = NULL;
    CAppsListView *m_ListView = NULL;
    CAppInfoDisplay *m_AppsInfo = NULL;
    CUiSplitPanel *m_HSplitter = NULL;
    CMainWindow *m_MainWindow = NULL;
    APPLICATION_VIEW_TYPE ApplicationViewType = AppViewTypeEmpty;

    BOOL ProcessWindowMessage(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam, LRESULT &theResult, DWORD dwMapId);

    BOOL CreateToolbar();

    BOOL CreateSearchBar();

    BOOL CreateComboBox();

    BOOL CreateHSplitter();

    BOOL CreateListView();

    BOOL CreateAppInfoDisplay();

    VOID OnSize(HWND hwnd, WPARAM wParam, LPARAM lParam);

    VOID OnCommand(WPARAM wParam, LPARAM lParam);
public:

    CApplicationView(CMainWindow *MainWindow);

    ~CApplicationView();

    static ATL::CWndClassInfo &GetWndClassInfo();

    HWND Create(HWND hwndParent);

    BOOL SetDisplayAppType(APPLICATION_VIEW_TYPE AppType);

    BOOL AddInstalledApplication(CInstalledApplicationInfo *InstAppInfo, LPVOID param);

    BOOL AddAvailableApplication(CAvailableApplicationInfo *AvlbAppInfo, BOOL InitCheckState, LPVOID param);

    void CheckAll();

    PVOID GetFocusedItemData();

    int GetItemCount();

    VOID AppendTabOrderWindow(int Direction, ATL::CSimpleArray<HWND> &TabOrderList);

    // this function is called when a item of listview get focus.
    // CallbackParam is the param passed to listview when adding the item (the one getting focus now).
    BOOL ItemGetFocus(LPVOID CallbackParam);

    // this function is called when a item of listview is checked/unchecked
    // CallbackParam is the param passed to listview when adding the item (the one getting focus now).
    BOOL ItemCheckStateChanged(BOOL bChecked, LPVOID CallbackParam);

};