diff options
Diffstat (limited to 'fpicker/source/win32/filepicker/dibpreview.cxx')
| -rw-r--r-- | fpicker/source/win32/filepicker/dibpreview.cxx | 472 |
1 files changed, 472 insertions, 0 deletions
diff --git a/fpicker/source/win32/filepicker/dibpreview.cxx b/fpicker/source/win32/filepicker/dibpreview.cxx new file mode 100644 index 000000000000..fcc369972ff8 --- /dev/null +++ b/fpicker/source/win32/filepicker/dibpreview.cxx @@ -0,0 +1,472 @@ +/************************************************************************* + * + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. + * + * Copyright 2000, 2010 Oracle and/or its affiliates. + * + * OpenOffice.org - a multi-platform office productivity suite + * + * This file is part of OpenOffice.org. + * + * OpenOffice.org is free software: you can redistribute it and/or modify + * it under the terms of the GNU Lesser General Public License version 3 + * only, as published by the Free Software Foundation. + * + * OpenOffice.org is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU Lesser General Public License version 3 for more details + * (a copy is included in the LICENSE file that accompanied this code). + * + * You should have received a copy of the GNU Lesser General Public License + * version 3 along with OpenOffice.org. If not, see + * <http://www.openoffice.org/license.html> + * for a copy of the LGPLv3 License. + * + ************************************************************************/ + +// MARKER(update_precomp.py): autogen include statement, do not remove +#include "precompiled_fpicker.hxx" + +//------------------------------------------------------------------------ +// includes +//------------------------------------------------------------------------ + +#include <tchar.h> +#include "dibpreview.hxx" +#include <osl/diagnose.h> + +#ifndef _COM_SUN_STAR_UI_DIALOG_FILEPREVIEWIMAGEFORMATS_HPP_ +#include <com/sun/star/ui/dialogs/FilePreviewImageFormats.hpp> +#endif + +#ifndef _USTRING_HXX_ +#include <rtl/ustring.hxx> +#endif + +#include <stdexcept> +#include <string> + +//------------------------------------------------------------------------ +// +//------------------------------------------------------------------------ + +using ::com::sun::star::uno::Sequence; +using ::com::sun::star::uno::RuntimeException; +using ::com::sun::star::uno::Any; +using ::com::sun::star::lang::IllegalArgumentException; +using rtl::OUString; + +//------------------------------------------------------------------------ +// +//------------------------------------------------------------------------ + +namespace /* private */ +{ + const LPTSTR CURRENT_INSTANCE = TEXT("CurrInst"); +}; + +//------------------------------------------------------------------------ +// defines +//------------------------------------------------------------------------ + +#define PREVIEWWND_CLASS_NAME TEXT("DIBPreviewWnd###") + +// means 3 pixel left and 3 pixel right +#define HORZ_BODER_SPACE 6 + +// means 3 pixel top and 3 pixel bottom +#define VERT_BORDER_SPACE 6 + +//--------------------------------------------------- +// static member initialization +//--------------------------------------------------- + +osl::Mutex CDIBPreview::s_Mutex; +ATOM CDIBPreview::s_ClassAtom = 0; +sal_Int32 CDIBPreview::s_RegisterDibPreviewWndCount = 0; + +//--------------------------------------------------- +// +//--------------------------------------------------- + +CDIBPreview::CDIBPreview(HINSTANCE instance,HWND parent,sal_Bool bShowWindow) : + m_Instance(instance) +{ + RegisterDibPreviewWindowClass(); + + DWORD dwStyle = WS_CHILD | WS_CLIPSIBLINGS | WS_CLIPCHILDREN; + + if (bShowWindow) + dwStyle |= WS_VISIBLE; + + m_Hwnd = CreateWindowEx( + WS_EX_CLIENTEDGE, + PREVIEWWND_CLASS_NAME, + TEXT(""), + dwStyle, + 0, 0, 0, 0, + parent, + (HMENU)0x0, // for child windows this will + // be used as child window identifier + m_Instance, + (LPVOID)this // pass a pointer to the current + // instance of this class + ); + + bool bSuccess = IsWindow(m_Hwnd); + + OSL_POSTCOND(bSuccess,"Coud not create preview window"); + + if (!bSuccess) + { + UnregisterDibPreviewWindowClass(); + throw std::runtime_error("Could not create preview window"); + } +} + +//--------------------------------------------------- +// +//--------------------------------------------------- + +CDIBPreview::~CDIBPreview( ) +{ + // remember: we don't have to destroy the + // preview window because it will be destroyed + // by it's parent window (the FileOpen dialog) + // but we have to unregister the window class + //if ( m_bWndClassRegistered ) + UnregisterDibPreviewWindowClass(); +} + +//------------------------------- +// +//------------------------------- + +sal_Int32 SAL_CALL CDIBPreview::getTargetColorDepth() throw (RuntimeException) +{ + HDC hdc = GetDC(m_Hwnd); + int clrRes = 0; + + if (hdc) + clrRes = GetDeviceCaps(hdc, COLORRES); + + return clrRes; +} + +//------------------------------- +// +//------------------------------- + +sal_Int32 SAL_CALL CDIBPreview::getAvailableWidth() throw (RuntimeException) +{ + RECT rect; + bool bRet = GetClientRect(m_Hwnd,&rect); + + sal_Int32 cx = 0; + + if ( bRet ) + cx = rect.right; + + return cx; +} + +//------------------------------- +// +//------------------------------- + +sal_Int32 SAL_CALL CDIBPreview::getAvailableHeight() throw (RuntimeException) +{ + RECT rect; + bool bRet = GetClientRect(m_Hwnd,&rect); + + sal_Int32 cy = 0; + + if ( bRet ) + cy = rect.bottom; + + return cy; +} + +//------------------------------- +// +//------------------------------- + +void SAL_CALL CDIBPreview::setImage(sal_Int16 aImageFormat, const Any& aImage) + throw (IllegalArgumentException, RuntimeException) +{ + PreviewBase::setImage(aImageFormat,aImage); + + // if the any has no value we have an + // empty Sequence which clears the + // preview window + osl::ClearableMutexGuard aGuard(m_PaintLock); + + m_Image.realloc(0); + m_ImageData >>= m_Image; + + aGuard.clear(); + + InvalidateRect(m_Hwnd,NULL,FALSE); + UpdateWindow(m_Hwnd); +} + +//------------------------------- +// +//------------------------------- + +sal_Bool SAL_CALL CDIBPreview::setShowState(sal_Bool bShowState) throw (RuntimeException) +{ + PreviewBase::setShowState(bShowState); + ShowWindow(m_Hwnd, m_bShowState ? SW_SHOW : SW_HIDE); + return sal_True; +} + +//------------------------------- +// +//------------------------------- + +sal_Bool SAL_CALL CDIBPreview::getShowState() throw (RuntimeException) +{ + return (sal_Bool)IsWindowVisible(m_Hwnd); +} + +//------------------------------- +// +//------------------------------- + +HWND SAL_CALL CDIBPreview::getWindowHandle() const +{ + return m_Hwnd; +} + +//--------------------------------------------------- +// +//--------------------------------------------------- + +void SAL_CALL CDIBPreview::onPaint(HWND hWnd, HDC hDC) +{ + BITMAPFILEHEADER* pbmfh; + BITMAPINFO * pbmi; + BYTE * pBits; + int cxDib; + int cyDib; + + osl::MutexGuard aGuard(m_PaintLock); + + try + { + pbmfh = reinterpret_cast<BITMAPFILEHEADER*>(m_Image.getArray()); + + if ( !IsBadReadPtr( pbmfh, sizeof(BITMAPFILEHEADER)) && + (pbmfh->bfType == ('B' | ('M' << 8))) ) + { + pbmi = reinterpret_cast<BITMAPINFO*>((pbmfh + 1)); + pBits = reinterpret_cast<BYTE*>(((DWORD)pbmfh) + pbmfh->bfOffBits); + + cxDib = pbmi->bmiHeader.biWidth; + cyDib = abs (pbmi->bmiHeader.biHeight); + + SetStretchBltMode(hDC, COLORONCOLOR); + + int nWidth = getAvailableWidth(); + int nHeight = getAvailableHeight(); + + int nX = abs(nWidth - cxDib) / 2; + int nY = abs(nHeight - cyDib) / 2; + + int GDIError = GDI_ERROR; + GDIError = StretchDIBits( + hDC, nX, nY, cxDib, cyDib, + 0, 0, cxDib, cyDib, pBits, pbmi, + DIB_RGB_COLORS, SRCCOPY); + + OSL_ASSERT(GDI_ERROR != GDIError); + + // paint the border + RECT rc; + + if (nY > 0) + { + // top + rc.left = 0; + rc.top = 0; + rc.right = nWidth; + rc.bottom = nY; + FillRect(hDC,&rc,(HBRUSH)(COLOR_INACTIVEBORDER + 1)); + + // bottom + rc.left = 0; + rc.top = nHeight - nY - 1; + rc.right = nWidth; + rc.bottom = nHeight; + FillRect(hDC,&rc,(HBRUSH)(COLOR_INACTIVEBORDER + 1)); + } + + if (nX > 0) + { + // left + rc.left = 0; + rc.top = nY; + rc.right = nX; + rc.bottom = nHeight - nY; + FillRect(hDC,&rc,(HBRUSH)(COLOR_INACTIVEBORDER + 1)); + + // right + rc.left = nWidth - nX - 1; + rc.top = nY; + rc.right = nWidth; + rc.bottom = nHeight - nY; + FillRect(hDC,&rc,(HBRUSH)(COLOR_INACTIVEBORDER + 1)); + } + } + else // clear background + { + RECT rc; + GetClientRect(hWnd,&rc); + FillRect(hDC,&rc,(HBRUSH)(COLOR_INACTIVEBORDER + 1)); + } + } + catch(...) + { + OSL_ASSERT(sal_False); + } +} + +//--------------------------------------------------- +// +//--------------------------------------------------- + +LRESULT CALLBACK CDIBPreview::WndProc( + HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam) +{ + LRESULT lResult = 0; + + switch(uMsg) + { + + // we connect a pointer to the current instance + // with a window instance via SetProp + case WM_CREATE: + { + LPCREATESTRUCT lpcs = + reinterpret_cast< LPCREATESTRUCT >(lParam); + + OSL_ASSERT(lpcs->lpCreateParams); + + // connect the instance handle to the window + SetProp(hWnd, CURRENT_INSTANCE, lpcs->lpCreateParams); + } + break; + + // we remove the window property which connects + // a class instance with a window class + case WM_NCDESTROY: + { + // RemoveProp returns the saved value on success + if (reinterpret_cast<CDIBPreview*>( + RemoveProp(hWnd, CURRENT_INSTANCE)) == NULL) + { + OSL_ASSERT(false); + } + } + break; + + case WM_PAINT: + { + CDIBPreview* pImpl = reinterpret_cast<CDIBPreview*>( + GetProp(hWnd, CURRENT_INSTANCE)); + + OSL_ASSERT(pImpl); + + HDC hDC; + PAINTSTRUCT ps; + + hDC = BeginPaint(hWnd,&ps); + pImpl->onPaint(hWnd,hDC); + EndPaint(hWnd,&ps); + } + break; + + // ignore this message in order to + // avoid flickering during paint + case WM_ERASEBKGND: + lResult = 1; + break; + + default: + return DefWindowProc(hWnd, uMsg, wParam, lParam); + } + + return lResult; +} + +//--------------------------------------------------- +// +//--------------------------------------------------- + +ATOM SAL_CALL CDIBPreview::RegisterDibPreviewWindowClass() +{ + osl::MutexGuard aGuard( s_Mutex ); + + if (0 == s_ClassAtom) + { + // register the preview window class + WNDCLASSEX wndClsEx; + ZeroMemory(&wndClsEx, sizeof(wndClsEx)); + + wndClsEx.cbSize = sizeof(wndClsEx); + wndClsEx.style = CS_HREDRAW | CS_VREDRAW; + wndClsEx.lpfnWndProc = CDIBPreview::WndProc; + wndClsEx.hInstance = m_Instance; + wndClsEx.hbrBackground = (HBRUSH)(COLOR_INACTIVEBORDER + 1); + wndClsEx.lpszClassName = PREVIEWWND_CLASS_NAME; + + // register the preview window class + // !!! Win95 - the window class will be unregistered automaticly + // if the dll is unloaded + // Win2000 - the window class must be unregistered manually + // if the dll is unloaded + s_ClassAtom = RegisterClassEx(&wndClsEx); + + OSL_POSTCOND(s_ClassAtom,"Could not register preview window class"); + + if (0 == s_ClassAtom) + throw std::runtime_error("Preview window class could not be registered"); + } + + // increment the register class counter + // so that we keep track of the number + // of class registrations + //if ( 0 != s_ClassAtom ) + s_RegisterDibPreviewWndCount++; + + return s_ClassAtom; +} + +//--------------------------------------------------- +// +//--------------------------------------------------- + +void SAL_CALL CDIBPreview::UnregisterDibPreviewWindowClass() +{ + osl::MutexGuard aGuard( s_Mutex ); + + OSL_ASSERT( ( (0 != s_ClassAtom) && (s_RegisterDibPreviewWndCount > 0)) || + ( (0 == s_ClassAtom) && (0 == s_RegisterDibPreviewWndCount) ) ); + + // update the register class counter + // and unregister the window class if + // counter drops to zero + if (0 != s_ClassAtom) + { + s_RegisterDibPreviewWndCount--; + OSL_ASSERT(s_RegisterDibPreviewWndCount >= 0); + } + + if (0 == s_RegisterDibPreviewWndCount) + { + UnregisterClass((LPCTSTR)MAKELONG(s_ClassAtom,0),m_Instance); + s_ClassAtom = 0; + } +} |