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#pragma once
#include "WinCompat.h"
#include <string>
/// This file defines all interfacing between console API and rendering backends.
/// Increment FAR2L_BACKEND_ABI_VERSION each time when:
/// Something changed in code below.
/// "WinCompat.h" changed in a way affecting code below.
/// Behavior of backend's code changed in incompatible way.
#define FAR2L_BACKEND_ABI_VERSION 0x01
class IConsoleOutputBackend
{
protected:
virtual ~IConsoleOutputBackend() {};
public:
virtual void OnConsoleOutputUpdated(const SMALL_RECT *areas, size_t count) = 0;
virtual void OnConsoleOutputResized() = 0;
virtual void OnConsoleOutputTitleChanged() = 0;
virtual void OnConsoleOutputWindowMoved(bool absolute, COORD pos) = 0;
virtual COORD OnConsoleGetLargestWindowSize() = 0;
virtual void OnConsoleAdhocQuickEdit() = 0;
virtual DWORD OnConsoleSetTweaks(DWORD tweaks) = 0;
virtual void OnConsoleChangeFont() = 0;
virtual void OnConsoleSetMaximized(bool maximized) = 0;
virtual void OnConsoleExit() = 0;
virtual bool OnConsoleIsActive() = 0;
virtual void OnConsoleDisplayNotification(const wchar_t *title, const wchar_t *text) = 0;
virtual bool OnConsoleBackgroundMode(bool TryEnterBackgroundMode) = 0;
virtual bool OnConsoleSetFKeyTitles(const char **titles) = 0;
};
class IClipboardBackend
{
protected:
friend class ClipboardBackendSetter;
virtual ~IClipboardBackend() {};
public:
virtual bool OnClipboardOpen() = 0;
virtual void OnClipboardClose() = 0;
virtual void OnClipboardEmpty() = 0;
virtual bool OnClipboardIsFormatAvailable(UINT format) = 0;
virtual void *OnClipboardSetData(UINT format, void *data) = 0;
virtual void *OnClipboardGetData(UINT format) = 0;
virtual UINT OnClipboardRegisterFormat(const wchar_t *lpszFormat) = 0;
};
IClipboardBackend *WinPortClipboard_SetBackend(IClipboardBackend *clipboard_backend);
class ClipboardBackendSetter
{
IClipboardBackend *_prev_cb = nullptr;
bool _is_set = false;
public:
inline bool IsSet() const { return _is_set; }
template <class BACKEND_T, typename... ArgsT>
inline void Set(ArgsT... args)
{
IClipboardBackend *cb = new BACKEND_T(args...);
IClipboardBackend *prev_cb = WinPortClipboard_SetBackend(cb);
if (!_is_set) {
_prev_cb = prev_cb;
_is_set = true;
} else {
delete prev_cb;
}
}
inline ~ClipboardBackendSetter()
{
if (_is_set) {
IClipboardBackend *cb = WinPortClipboard_SetBackend(_prev_cb);
if (cb != _prev_cb) {
delete cb;
}
}
}
};
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
class IConsoleInput
{
protected:
virtual ~IConsoleInput() {};
public:
virtual void Enqueue(const INPUT_RECORD *data, DWORD size) = 0;
virtual DWORD Peek(INPUT_RECORD *data, DWORD size, unsigned int requestor_priority = 0) = 0;
virtual DWORD Dequeue(INPUT_RECORD *data, DWORD size, unsigned int requestor_priority = 0) = 0;
virtual DWORD Count(unsigned int requestor_priority = 0) = 0;
virtual DWORD Flush(unsigned int requestor_priority = 0) = 0;
virtual bool WaitForNonEmpty(unsigned int timeout_msec = (unsigned int)-1, unsigned int requestor_priority = 0) = 0;
virtual unsigned int RaiseRequestorPriority() = 0;
virtual void LowerRequestorPriority(unsigned int released_priority) = 0;
};
class ConsoleInputPriority
{
IConsoleInput *_con_input;
unsigned int _my_priority;
public:
inline ConsoleInputPriority(IConsoleInput *con_input)
: _con_input(con_input),
_my_priority(con_input->RaiseRequestorPriority())
{
}
inline ~ConsoleInputPriority()
{
_con_input->LowerRequestorPriority(_my_priority);
}
inline operator int() const {return _my_priority; }
};
////////////////////////////////////////////////////////////////
class IConsoleOutput
{
protected:
virtual ~IConsoleOutput() {};
friend class DirectLineAccess;
virtual CHAR_INFO *LockedDirectLineAccess(size_t line_index, unsigned int &width) = 0;
virtual const wchar_t *LockedGetTitle() = 0;
virtual void Unlock() = 0;
public:
virtual void SetBackend(IConsoleOutputBackend *listener) = 0;
virtual void SetAttributes(USHORT attributes) = 0;
virtual USHORT GetAttributes() = 0;
virtual void SetCursor(COORD pos) = 0;
virtual void SetCursor(UCHAR height, bool visible) = 0;
virtual COORD GetCursor() = 0;
virtual COORD GetCursor(UCHAR &height, bool &visible) = 0;
virtual void SetSize(unsigned int width, unsigned int height) = 0;
virtual void GetSize(unsigned int &width, unsigned int &height) = 0;
virtual COORD GetLargestConsoleWindowSize() = 0;
virtual void SetWindowMaximized(bool maximized) = 0;
virtual void SetWindowInfo(bool absolute, const SMALL_RECT &rect) = 0;
virtual void SetTitle(const WCHAR *title) = 0;
virtual DWORD GetMode() = 0;
virtual void SetMode(DWORD mode) = 0;
virtual void Read(CHAR_INFO *data, COORD data_size, COORD data_pos, SMALL_RECT &screen_rect) = 0;
virtual void Write(const CHAR_INFO *data, COORD data_size, COORD data_pos, SMALL_RECT &screen_rect) = 0;
virtual bool Read(CHAR_INFO &data, COORD screen_pos) = 0;
virtual bool Write(const CHAR_INFO &data, COORD screen_pos) = 0;
virtual size_t WriteString(const WCHAR *data, size_t count) = 0;
virtual size_t WriteStringAt(const WCHAR *data, size_t count, COORD &pos) = 0;
virtual size_t FillCharacterAt(WCHAR cCharacter, size_t count, COORD &pos) = 0;
virtual size_t FillAttributeAt(WORD wAttribute, size_t count, COORD &pos) = 0;
virtual bool Scroll(const SMALL_RECT *lpScrollRectangle, const SMALL_RECT *lpClipRectangle,
COORD dwDestinationOrigin, const CHAR_INFO *lpFill) = 0;
virtual void SetScrollRegion(SHORT top, SHORT bottom) = 0;
virtual void GetScrollRegion(SHORT &top, SHORT &bottom) = 0;
virtual void SetScrollCallback(PCONSOLE_SCROLL_CALLBACK pCallback, PVOID pContext) = 0;
virtual void AdhocQuickEdit() = 0;
virtual DWORD SetConsoleTweaks(DWORD tweaks) = 0;
virtual void ConsoleChangeFont() = 0;
virtual bool IsActive() = 0;
virtual void ConsoleDisplayNotification(const WCHAR *title, const WCHAR *text) = 0;
virtual bool ConsoleBackgroundMode(bool TryEnterBackgroundMode) = 0;
virtual bool SetFKeyTitles(const CHAR **titles) = 0;
inline std::wstring GetTitle()
{
std::wstring out(LockedGetTitle());
Unlock();
return out;
}
class DirectLineAccess
{
IConsoleOutput *_co;
CHAR_INFO *_line;
unsigned int _width;
public:
inline DirectLineAccess(IConsoleOutput *co, size_t line_index)
: _co(co)
{
_line = _co->LockedDirectLineAccess(line_index, _width);
}
inline ~DirectLineAccess()
{
_co->Unlock();
}
inline CHAR_INFO *Line() { return _line; }
inline unsigned int Width() const { return _width; }
};
};
//////////////////////////////////////////////////////////////////////////////////
extern IConsoleOutput *g_winport_con_out;
extern IConsoleInput *g_winport_con_in;
extern const wchar_t *g_winport_backend;
//////////////////////////////////////////////////////////////////////////////////
struct WinPortMainBackendArg
{
unsigned int abi_version; // set to/check with FAR2L_BACKEND_ABI_VERSION
int argc;
char **argv;
int (*app_main)(int argc, char **argv);
int *result;
IConsoleOutput *winport_con_out;
IConsoleInput *winport_con_in;
};
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