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Merge pull request #4090 from MSOpenTech:highgui_winrt

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pull/4128/head
Vadim Pisarevsky 10 years ago
parent fd225469bc 6724a0b8cd
commit 0824ed595b
5 changed files with 461 additions and 10042 deletions
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  1. 26
      modules/highgui/CMakeLists.txt
  2. 568
      modules/highgui/src/agile_wrl.h
  3. 9466
      modules/highgui/src/ppltasks_winrt.h
  4. 5
      modules/highgui/src/window.cpp
  5. 438
      modules/highgui/src/window_winrt.cpp

26
modules/highgui/CMakeLists.txt
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@ -1,7 +1,3 @@
if (WINRT)
ocv_module_disable(highgui)
endif()
set(the_description "High-level GUI and Media I/O")
ocv_add_module(highgui opencv_imgproc opencv_imgcodecs opencv_videoio WRAP python)
@ -11,8 +7,7 @@ ocv_add_module(highgui opencv_imgproc opencv_imgcodecs opencv_videoio WRAP pytho
# Jose Luis Blanco, 2008
# ----------------------------------------------------------------------------
# Compilation with /ZW is not allowed for *.c files
if(HAVE_WINRT_CX AND NOT WINRT)
if(WINRT_8_1)
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /ZW")
endif()
@ -71,6 +66,25 @@ elseif(HAVE_QT)
if(${_have_flag})
set_source_files_properties(${_RCC_OUTFILES} PROPERTIES COMPILE_FLAGS -Wno-missing-declarations)
endif()
elseif(WINRT AND NOT WINRT_8_0)
# Dependencies used by the implementation referenced
# below are not available on WinRT 8.0.
# Enabling it for WiRT 8.1+ only.
status(" ${name}: WinRT detected")
list(APPEND highgui_srcs ${CMAKE_CURRENT_LIST_DIR}/src/window_winrt.cpp)
# libraries below are neither available nor required
# on ARM devices and/or Windows Phone
if(WINRT_PHONE OR (OpenCV_ARCH STREQUAL "ARM"))
list(REMOVE_ITEM HIGHGUI_LIBRARIES "comctl32" "gdi32" "ole32" "setupapi")
if(WINRT_PHONE)
status(" ${name}: Windows Phone detected")
elseif(OpenCV_ARCH STREQUAL "ARM")
status(" ${name}: ARM detected")
endif()
status(" ${name}: Removing 'comctl32.lib, gdi32.lib, ole32.lib, setupapi.lib'")
status(" ${name}: Leaving '${HIGHGUI_LIBRARIES}'")
endif()
elseif(HAVE_WIN32UI)
list(APPEND highgui_srcs ${CMAKE_CURRENT_LIST_DIR}/src/window_w32.cpp)
elseif(HAVE_GTK OR HAVE_GTK3)

568
modules/highgui/src/agile_wrl.h
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@ -1,568 +0,0 @@
//
// Copyright (C) Microsoft Corporation
// All rights reserved.
// Modified for native C++ WRL support by Gregory Morse
//
// Code in Details namespace is for internal usage within the library code
//
#ifndef _PLATFORM_AGILE_H_
#define _PLATFORM_AGILE_H_
#ifdef _MSC_VER
#pragma once
#endif // _MSC_VER
#include <algorithm>
#include <wrl\client.h>
template <typename T, bool TIsNotAgile> class Agile;
template <typename T>
struct UnwrapAgile
{
static const bool _IsAgile = false;
};
template <typename T>
struct UnwrapAgile<Agile<T, false>>
{
static const bool _IsAgile = true;
};
template <typename T>
struct UnwrapAgile<Agile<T, true>>
{
static const bool _IsAgile = true;
};
#define IS_AGILE(T) UnwrapAgile<T>::_IsAgile
#define __is_winrt_agile(T) (std::is_same<T, HSTRING__>::value || std::is_base_of<Microsoft::WRL::FtmBase, T>::value || std::is_base_of<IAgileObject, T>::value) //derived from Microsoft::WRL::FtmBase or IAgileObject
#define __is_win_interface(T) (std::is_base_of<IUnknown, T>::value || std::is_base_of<IInspectable, T>::value) //derived from IUnknown or IInspectable
#define __is_win_class(T) (std::is_same<T, HSTRING__>::value || std::is_base_of<Microsoft::WRL::Details::RuntimeClassBase, T>::value) //derived from Microsoft::WRL::RuntimeClass or HSTRING
namespace Details
{
IUnknown* __stdcall GetObjectContext();
HRESULT __stdcall GetProxyImpl(IUnknown*, REFIID, IUnknown*, IUnknown**);
HRESULT __stdcall ReleaseInContextImpl(IUnknown*, IUnknown*);
template <typename T>
#if _MSC_VER >= 1800
__declspec(no_refcount) inline HRESULT GetProxy(T *ObjectIn, IUnknown *ContextCallBack, T **Proxy)
#else
inline HRESULT GetProxy(T *ObjectIn, IUnknown *ContextCallBack, T **Proxy)
#endif
{
#if _MSC_VER >= 1800
return GetProxyImpl(*reinterpret_cast<IUnknown**>(&ObjectIn), __uuidof(T*), ContextCallBack, reinterpret_cast<IUnknown**>(Proxy));
#else
return GetProxyImpl(*reinterpret_cast<IUnknown**>(&const_cast<T*>(ObjectIn)), __uuidof(T*), ContextCallBack, reinterpret_cast<IUnknown**>(Proxy));
#endif
}
template <typename T>
inline HRESULT ReleaseInContext(T *ObjectIn, IUnknown *ContextCallBack)
{
return ReleaseInContextImpl(ObjectIn, ContextCallBack);
}
template <typename T>
class AgileHelper
{
__abi_IUnknown* _p;
bool _release;
public:
AgileHelper(__abi_IUnknown* p, bool release = true) : _p(p), _release(release)
{
}
AgileHelper(AgileHelper&& other) : _p(other._p), _release(other._release)
{
_other._p = nullptr;
_other._release = true;
}
AgileHelper operator=(AgileHelper&& other)
{
_p = other._p;
_release = other._release;
_other._p = nullptr;
_other._release = true;
return *this;
}
~AgileHelper()
{
if (_release && _p)
{
_p->__abi_Release();
}
}
__declspec(no_refcount) __declspec(no_release_return)
T* operator->()
{
return reinterpret_cast<T*>(_p);
}
__declspec(no_refcount) __declspec(no_release_return)
operator T * ()
{
return reinterpret_cast<T*>(_p);
}
private:
AgileHelper(const AgileHelper&);
AgileHelper operator=(const AgileHelper&);
};
template <typename T>
struct __remove_hat
{
typedef T type;
};
template <typename T>
struct __remove_hat<T*>
{
typedef T type;
};
template <typename T>
struct AgileTypeHelper
{
typename typedef __remove_hat<T>::type type;
typename typedef __remove_hat<T>::type* agileMemberType;
};
} // namespace Details
#pragma warning(push)
#pragma warning(disable: 4451) // Usage of ref class inside this context can lead to invalid marshaling of object across contexts
template <
typename T,
bool TIsNotAgile = (__is_win_class(typename Details::AgileTypeHelper<T>::type) && !__is_winrt_agile(typename Details::AgileTypeHelper<T>::type)) ||
__is_win_interface(typename Details::AgileTypeHelper<T>::type)
>
class Agile
{
static_assert(__is_win_class(typename Details::AgileTypeHelper<T>::type) || __is_win_interface(typename Details::AgileTypeHelper<T>::type), "Agile can only be used with ref class or interface class types");
typename typedef Details::AgileTypeHelper<T>::agileMemberType TypeT;
TypeT _object;
::Microsoft::WRL::ComPtr<IUnknown> _contextCallback;
ULONG_PTR _contextToken;
#if _MSC_VER >= 1800
enum class AgileState
{
NonAgilePointer = 0,
AgilePointer = 1,
Unknown = 2
};
AgileState _agileState;
#endif
void CaptureContext()
{
_contextCallback = Details::GetObjectContext();
__abi_ThrowIfFailed(CoGetContextToken(&_contextToken));
}
void SetObject(TypeT object)
{
// Capture context before setting the pointer
// If context capture fails then nothing to cleanup
Release();
if (object != nullptr)
{
::Microsoft::WRL::ComPtr<IAgileObject> checkIfAgile;
HRESULT hr = reinterpret_cast<IUnknown*>(object)->QueryInterface(__uuidof(IAgileObject), &checkIfAgile);
// Don't Capture context if object is agile
if (hr != S_OK)
{
#if _MSC_VER >= 1800
_agileState = AgileState::NonAgilePointer;
#endif
CaptureContext();
}
#if _MSC_VER >= 1800
else
{
_agileState = AgileState::AgilePointer;
}
#endif
}
_object = object;
}
public:
Agile() throw() : _object(nullptr), _contextToken(0)
#if _MSC_VER >= 1800
, _agileState(AgileState::Unknown)
#endif
{
}
Agile(nullptr_t) throw() : _object(nullptr), _contextToken(0)
#if _MSC_VER >= 1800
, _agileState(AgileState::Unknown)
#endif
{
}
explicit Agile(TypeT object) throw() : _object(nullptr), _contextToken(0)
#if _MSC_VER >= 1800
, _agileState(AgileState::Unknown)
#endif
{
// Assumes that the source object is from the current context
SetObject(object);
}
Agile(const Agile& object) throw() : _object(nullptr), _contextToken(0)
#if _MSC_VER >= 1800
, _agileState(AgileState::Unknown)
#endif
{
// Get returns pointer valid for current context
SetObject(object.Get());
}
Agile(Agile&& object) throw() : _object(nullptr), _contextToken(0)
#if _MSC_VER >= 1800
, _agileState(AgileState::Unknown)
#endif
{
// Assumes that the source object is from the current context
Swap(object);
}
~Agile() throw()
{
Release();
}
TypeT Get() const
{
// Agile object, no proxy required
#if _MSC_VER >= 1800
if (_agileState == AgileState::AgilePointer || _object == nullptr)
#else
if (_contextToken == 0 || _contextCallback == nullptr || _object == nullptr)
#endif
{
return _object;
}
// Do the check for same context
ULONG_PTR currentContextToken;
__abi_ThrowIfFailed(CoGetContextToken(&currentContextToken));
if (currentContextToken == _contextToken)
{
return _object;
}
#if _MSC_VER >= 1800
// Different context and holding on to a non agile object
// Do the costly work of getting a proxy
TypeT localObject;
__abi_ThrowIfFailed(Details::GetProxy(_object, _contextCallback.Get(), &localObject));
if (_agileState == AgileState::Unknown)
#else
// Object is agile if it implements IAgileObject
// GetAddressOf captures the context with out knowing the type of object that it will hold
if (_object != nullptr)
#endif
{
#if _MSC_VER >= 1800
// Object is agile if it implements IAgileObject
// GetAddressOf captures the context with out knowing the type of object that it will hold
::Microsoft::WRL::ComPtr<IAgileObject> checkIfAgile;
HRESULT hr = reinterpret_cast<IUnknown*>(localObject)->QueryInterface(__uuidof(IAgileObject), &checkIfAgile);
#else
::Microsoft::WRL::ComPtr<IAgileObject> checkIfAgile;
HRESULT hr = reinterpret_cast<IUnknown*>(_object)->QueryInterface(__uuidof(IAgileObject), &checkIfAgile);
#endif
if (hr == S_OK)
{
auto pThis = const_cast<Agile*>(this);
#if _MSC_VER >= 1800
pThis->_agileState = AgileState::AgilePointer;
#endif
pThis->_contextToken = 0;
pThis->_contextCallback = nullptr;
return _object;
}
#if _MSC_VER >= 1800
else
{
auto pThis = const_cast<Agile*>(this);
pThis->_agileState = AgileState::NonAgilePointer;
}
#endif
}
#if _MSC_VER < 1800
// Different context and holding on to a non agile object
// Do the costly work of getting a proxy
TypeT localObject;
__abi_ThrowIfFailed(Details::GetProxy(_object, _contextCallback.Get(), &localObject));
#endif
return localObject;
}
TypeT* GetAddressOf() throw()
{
Release();
CaptureContext();
return &_object;
}
TypeT* GetAddressOfForInOut() throw()
{
CaptureContext();
return &_object;
}
TypeT operator->() const throw()
{
return Get();
}
Agile& operator=(nullptr_t) throw()
{
Release();
return *this;
}
Agile& operator=(TypeT object) throw()
{
Agile(object).Swap(*this);
return *this;
}
Agile& operator=(Agile object) throw()
{
// parameter is by copy which gets pointer valid for current context
object.Swap(*this);
return *this;
}
#if _MSC_VER < 1800
Agile& operator=(IUnknown* lp) throw()
{
// bump ref count
::Microsoft::WRL::ComPtr<IUnknown> spObject(lp);
// put it into Platform Object
Platform::Object object;
*(IUnknown**)(&object) = spObject.Detach();
SetObject(object);
return *this;
}
#endif
void Swap(Agile& object)
{
std::swap(_object, object._object);
std::swap(_contextCallback, object._contextCallback);
std::swap(_contextToken, object._contextToken);
#if _MSC_VER >= 1800
std::swap(_agileState, object._agileState);
#endif
}
// Release the interface and set to NULL
void Release() throw()
{
if (_object)
{
// Cast to IInspectable (no QI)
IUnknown* pObject = *(IUnknown**)(&_object);
// Set * to null without release
*(IUnknown**)(&_object) = nullptr;
ULONG_PTR currentContextToken;
__abi_ThrowIfFailed(CoGetContextToken(&currentContextToken));
if (_contextToken == 0 || _contextCallback == nullptr || _contextToken == currentContextToken)
{
pObject->Release();
}
else
{
Details::ReleaseInContext(pObject, _contextCallback.Get());
}
_contextCallback = nullptr;
_contextToken = 0;
#if _MSC_VER >= 1800
_agileState = AgileState::Unknown;
#endif
}
}
bool operator==(nullptr_t) const throw()
{
return _object == nullptr;
}
bool operator==(const Agile& other) const throw()
{
return _object == other._object && _contextToken == other._contextToken;
}
bool operator<(const Agile& other) const throw()
{
if (reinterpret_cast<void*>(_object) < reinterpret_cast<void*>(other._object))
{
return true;
}
return _object == other._object && _contextToken < other._contextToken;
}
};
template <typename T>
class Agile<T, false>
{
static_assert(__is_win_class(typename Details::AgileTypeHelper<T>::type) || __is_win_interface(typename Details::AgileTypeHelper<T>::type), "Agile can only be used with ref class or interface class types");
typename typedef Details::AgileTypeHelper<T>::agileMemberType TypeT;
TypeT _object;
public:
Agile() throw() : _object(nullptr)
{
}
Agile(nullptr_t) throw() : _object(nullptr)
{
}
explicit Agile(TypeT object) throw() : _object(object)
{
}
Agile(const Agile& object) throw() : _object(object._object)
{
}
Agile(Agile&& object) throw() : _object(nullptr)
{
Swap(object);
}
~Agile() throw()
{
Release();
}
TypeT Get() const
{
return _object;
}
TypeT* GetAddressOf() throw()
{
Release();
return &_object;
}
TypeT* GetAddressOfForInOut() throw()
{
return &_object;
}
TypeT operator->() const throw()
{
return Get();
}
Agile& operator=(nullptr_t) throw()
{
Release();
return *this;
}
Agile& operator=(TypeT object) throw()
{
if (_object != object)
{
_object = object;
}
return *this;
}
Agile& operator=(Agile object) throw()
{
object.Swap(*this);
return *this;
}
#if _MSC_VER < 1800
Agile& operator=(IUnknown* lp) throw()
{
Release();
// bump ref count
::Microsoft::WRL::ComPtr<IUnknown> spObject(lp);
// put it into Platform Object
Platform::Object object;
*(IUnknown**)(&object) = spObject.Detach();
_object = object;
return *this;
}
#endif
// Release the interface and set to NULL
void Release() throw()
{
_object = nullptr;
}
void Swap(Agile& object)
{
std::swap(_object, object._object);
}
bool operator==(nullptr_t) const throw()
{
return _object == nullptr;
}
bool operator==(const Agile& other) const throw()
{
return _object == other._object;
}
bool operator<(const Agile& other) const throw()
{
return reinterpret_cast<void*>(_object) < reinterpret_cast<void*>(other._object);
}
};
#pragma warning(pop)
template<class U>
bool operator==(nullptr_t, const Agile<U>& a) throw()
{
return a == nullptr;
}
template<class U>
bool operator!=(const Agile<U>& a, nullptr_t) throw()
{
return !(a == nullptr);
}
template<class U>
bool operator!=(nullptr_t, const Agile<U>& a) throw()
{
return !(a == nullptr);
}
template<class U>
bool operator!=(const Agile<U>& a, const Agile<U>& b) throw()
{
return !(a == b);
}
#endif // _PLATFORM_AGILE_H_

9466
modules/highgui/src/ppltasks_winrt.h
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5
modules/highgui/src/window.cpp
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@ -481,11 +481,12 @@ int cv::createButton(const String&, ButtonCallback, void*, int , bool )
#endif
#if defined(HAVE_WIN32UI) // see window_w32.cpp
#if defined (HAVE_WIN32UI) // see window_w32.cpp
#elif defined (HAVE_GTK) // see window_gtk.cpp
#elif defined (HAVE_COCOA) // see window_carbon.cpp
#elif defined (HAVE_CARBON)
#elif defined (HAVE_QT) //YV see window_QT.cpp
#elif defined (HAVE_QT) // see window_QT.cpp
#elif defined (WINRT) && !defined (WINRT_8_0) // see window_winrt.cpp
#else

438
modules/highgui/src/window_winrt.cpp
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@ -0,0 +1,438 @@
#include "precomp.hpp"
#if defined WINRT && !defined WINRT_8_0
#include <stdlib.h>
#include <string.h>
#include <stdio.h>
#include <assert.h>
struct CvWindow;
typedef struct CvTrackbar
{
int signature;
void* hwnd; // TODO: use proper handle type
char* name;
CvTrackbar* next;
CvWindow* parent;
int* data;
int pos;
int maxval;
void (*notify)(int);
void (*notify2)(int, void*);
void* userdata;
int id;
}
CvTrackbar;
typedef struct CvWindow
{
int signature;
void* hwnd; // TODO: use proper handle type
char* name;
CvWindow* prev;
CvWindow* next;
HGDIOBJ image;
int flags;
CvMouseCallback on_mouse;
void* on_mouse_param;
struct
{
void* toolbar; // TODO: use proper handle type
int pos;
int rows;
CvTrackbar* first;
}
toolbar;
int width;
int height;
}
CvWindow;
static CvWindow* hg_windows = 0;
// typedef int (CV_CDECL * CvWin32WindowCallback)(HWND, UINT, WPARAM, LPARAM, int*);
static CvWindow* icvFindWindowByName(const char* name) {
CvWindow* window = hg_windows;
for (; window != 0 && strcmp(name, window->name) != 0; window = window->next)
;
return window;
}
static CvTrackbar*
icvFindTrackbarByName(const CvWindow* window, const char* name) {
CvTrackbar* trackbar = window->toolbar.first;
for (; trackbar != 0 && strcmp(trackbar->name, name) != 0; trackbar = trackbar->next)
;
return trackbar;
}
CV_IMPL int cvInitSystem( int, char** )
{
static int wasInitialized = 0;
if (!wasInitialized)
{
hg_windows = 0;
}
return 0;
}
CV_IMPL int cvStartWindowThread(){
return 0;
}
CV_IMPL int cvNamedWindow( const char* name, int flags )
{
int result = 0;
CV_FUNCNAME( "cvNamedWindow" );
__BEGIN__;
__END__;
return result;
}
CV_IMPL void cvDestroyWindow( const char* name )
{
CV_FUNCNAME( "cvDestroyWindow" );
__BEGIN__;
CvWindow* window;
if(!name)
CV_ERROR( CV_StsNullPtr, "NULL name string" );
window = icvFindWindowByName(name);
if( !window )
EXIT;
__END__;
}
CV_IMPL void cvShowImage( const char* name, const CvArr* arr )
{
CV_FUNCNAME( "cvShowImage" );
__BEGIN__;
CvWindow* window;
SIZE size = { 0, 0 };
int channels = 0;
void* dst_ptr = 0;
const int channels_def = 3;
int origin = 0;
CvMat stub, dst, *image;
bool changed_size = false;
if( !name )
CV_ERROR( CV_StsNullPtr, "NULL name" );
window = icvFindWindowByName(name);
if(!window)
{
cvNamedWindow(name, CV_WINDOW_AUTOSIZE);
window = icvFindWindowByName(name);
}
if( !window || !arr )
EXIT;
if( CV_IS_IMAGE_HDR( arr ))
origin = ((IplImage*)arr)->origin;
CV_CALL( image = cvGetMat( arr, &stub ));
#ifdef HAVE_OPENGL
if (window->useGl)
{
cv::imshow(name, cv::cvarrToMat(image));
return;
}
#endif
if (window->image)
{
//TODO: validate image
}
if (size.cx != image->width || size.cy != image->height || channels != channels_def)
{
changed_size = true;
//TODO: handle image resize
}
cvInitMatHeader( &dst, size.cy, size.cx, CV_8UC3,
dst_ptr, (size.cx * channels + 3) & -4 );
cvConvertImage( image, &dst, origin == 0 ? CV_CVTIMG_FLIP : 0 );
if (changed_size)
//TODO: handle consequent image resize
__END__;
}
CV_IMPL void cvResizeWindow(const char* name, int width, int height )
{
CV_FUNCNAME( "cvResizeWindow" );
__BEGIN__;
CvWindow* window;
if( !name )
CV_ERROR( CV_StsNullPtr, "NULL name" );
window = icvFindWindowByName(name);
if(!window)
EXIT;
// TODO: implement appropriate logic here
__END__;
}
CV_IMPL void cvMoveWindow( const char* name, int x, int y )
{
CV_FUNCNAME( "cvMoveWindow" );
__BEGIN__;
CvWindow* window;
RECT rect;
if( !name )
CV_ERROR( CV_StsNullPtr, "NULL name" );
window = icvFindWindowByName(name);
if(!window)
EXIT;
// TODO: implement appropriate logic here
__END__;
}
CV_IMPL void cvDestroyAllWindows(void)
{
// TODO: implement appropriate logic here
}
CV_IMPL int cvWaitKey( int delay )
{
// see https://msdn.microsoft.com/en-us/library/windows/desktop/ms724411(v=vs.85).aspx
int time0 = GetTickCount64();
for(;;)
{
CvWindow* window;
if ((delay > 0 && abs((int)(GetTickCount64() - time0)) >= delay) || hg_windows == 0)
return -1;
if (delay <= 0)
{
// TODO: implement appropriate logic here
}
for( window = hg_windows; window != 0; window = window->next )
{
}
}
}
CV_IMPL int
cvCreateTrackbar( const char* trackbar_name, const char* window_name,
int* val, int count, CvTrackbarCallback on_notify )
{
// TODO: implement appropriate logic here
return 0;
}
CV_IMPL int
cvCreateTrackbar2( const char* trackbar_name, const char* window_name,
int* val, int count, CvTrackbarCallback2 on_notify2,
void* userdata )
{
// TODO: implement appropriate logic here
return 0;
}
CV_IMPL void
cvSetMouseCallback( const char* window_name, CvMouseCallback on_mouse, void* param )
{
CV_FUNCNAME( "cvSetMouseCallback" );
__BEGIN__;
CvWindow* window = 0;
if( !window_name )
CV_ERROR( CV_StsNullPtr, "NULL window name" );
window = icvFindWindowByName(window_name);
if( !window )
EXIT;
// TODO: implement appropriate logic here
__END__;
}
CV_IMPL int cvGetTrackbarPos( const char* trackbar_name, const char* window_name )
{
int pos = -1;
CV_FUNCNAME( "cvGetTrackbarPos" );
__BEGIN__;
CvWindow* window;
CvTrackbar* trackbar = 0;
if( trackbar_name == 0 || window_name == 0 )
CV_ERROR( CV_StsNullPtr, "NULL trackbar or window name" );
window = icvFindWindowByName( window_name );
if( window )
trackbar = icvFindTrackbarByName( window, trackbar_name );
if( trackbar )
pos = trackbar->pos;
__END__;
return pos;
}
CV_IMPL void cvSetTrackbarPos( const char* trackbar_name, const char* window_name, int pos )
{
CV_FUNCNAME( "cvSetTrackbarPos" );
__BEGIN__;
CvWindow* window;
CvTrackbar* trackbar = 0;
if( trackbar_name == 0 || window_name == 0 )
CV_ERROR( CV_StsNullPtr, "NULL trackbar or window name" );
window = icvFindWindowByName( window_name );
if( window )
trackbar = icvFindTrackbarByName( window, trackbar_name );
if( trackbar )
{
if( pos < 0 )
pos = 0;
if( pos > trackbar->maxval )
pos = trackbar->maxval;
//TODO: update trackbar
}
__END__;
}
CV_IMPL void cvSetTrackbarMax(const char* trackbar_name, const char* window_name, int maxval)
{
CV_FUNCNAME( "cvSetTrackbarMax" );
__BEGIN__;
if (maxval >= 0)
{
CvWindow* window = 0;
CvTrackbar* trackbar = 0;
if (trackbar_name == 0 || window_name == 0)
{
CV_ERROR(CV_StsNullPtr, "NULL trackbar or window name");
}
window = icvFindWindowByName(window_name);
if (window)
{
trackbar = icvFindTrackbarByName(window, trackbar_name);
if (trackbar)
{
// The position will be min(pos, maxval).
trackbar->maxval = maxval;
//TODO: update trackbar
}
}
}
__END__;
}
CV_IMPL void* cvGetWindowHandle( const char* window_name )
{
void* hwnd = 0;
CV_FUNCNAME( "cvGetWindowHandle" );
__BEGIN__;
CvWindow* window;
if( window_name == 0 )
CV_ERROR( CV_StsNullPtr, "NULL window name" );
window = icvFindWindowByName( window_name );
if( window )
hwnd = (void*)window->hwnd;
__END__;
return hwnd;
}
CV_IMPL const char* cvGetWindowName( void* window_handle )
{
const char* window_name = "";
CV_FUNCNAME( "cvGetWindowName" );
__BEGIN__;
CvWindow* window = 0;
if( window_handle == 0 )
CV_ERROR( CV_StsNullPtr, "NULL window" );
// window = TODO: find window by handle
if( window )
window_name = window->name;
__END__;
return 0;
}
#endif //defined WINRT && !defined WINRT_8_0
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