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with joost: support for pasting metafiles under windows

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git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@24144 a592a061-630c-0410-9148-cb99ea01b6c8
This commit is contained in:
Edwin Leuven 2008-04-07 07:28:03 +00:00
parent 7412bd1fb1
commit 753aa0451d
2 changed files with 148 additions and 1 deletions
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2
src/frontends/Clipboard.h
View File

@ -37,6 +37,8 @@ public:
PngGraphicsType,
JpegGraphicsType,
LinkBackGraphicsType,
EmfGraphicsType,
WmfGraphicsType,
AnyGraphicsType,
};

147
src/frontends/qt4/GuiClipboard.cpp
View File

@ -41,6 +41,11 @@
#include <QString>
#include <QStringList>
#ifdef Q_WS_WIN
#include <QWindowsMime>
#include <objidl.h>
#endif // Q_WS_WIN
#include "boost/assert.hpp"
#include <map>
@ -54,11 +59,132 @@ using namespace lyx::support;
static char const * const lyx_mime_type = "application/x-lyx";
static char const * const pdf_mime_type = "application/pdf";
static char const * const emf_mime_type = "image/x-emf";
static char const * const wmf_mime_type = "image/x-wmf";
namespace lyx {
namespace frontend {
#ifdef Q_WS_WIN
static FORMATETC setCf(int cf)
{
FORMATETC formatetc;
formatetc.cfFormat = cf;
formatetc.ptd = NULL;
formatetc.dwAspect = DVASPECT_CONTENT;
formatetc.lindex = -1;
if (cf == CF_ENHMETAFILE)
formatetc.tymed = TYMED_ENHMF;
if (cf == CF_METAFILEPICT)
formatetc.tymed = TYMED_MFPICT;
return formatetc;
}
static bool canGetData(int cf, IDataObject * pDataObj)
{
FORMATETC formatetc = setCf(cf);
return pDataObj->QueryGetData(&formatetc) == S_OK;
}
class QWindowsMimeMetafile : public QWindowsMime {
public:
bool canConvertFromMime(FORMATETC const & formatetc, QMimeData const * mimeData) const;
bool canConvertToMime(QString const & mimeType, IDataObject * pDataObj) const;
bool convertFromMime(FORMATETC const & formatetc, const QMimeData * mimeData, STGMEDIUM * pmedium) const;
QVariant convertToMime(QString const & mimeType, IDataObject * pDataObj, QVariant::Type preferredType) const;
QVector<FORMATETC> formatsForMime(QString const & mimeType, QMimeData const * mimeData) const;
QString mimeForFormat(FORMATETC const &) const;
};
QString QWindowsMimeMetafile::mimeForFormat(const FORMATETC & formatetc) const
{
QString f;
if (formatetc.cfFormat == CF_ENHMETAFILE)
f = emf_mime_type;
else if (formatetc.cfFormat == CF_METAFILEPICT)
f = wmf_mime_type;
return f;
}
bool QWindowsMimeMetafile::canConvertFromMime(
const FORMATETC & formatetc, const QMimeData * mimeData) const
{
return false;
}
bool QWindowsMimeMetafile::canConvertToMime(
const QString & mimeType, IDataObject * pDataObj) const
{
return (mimeType == "image/x-emf" && canGetData(CF_ENHMETAFILE, pDataObj))
|| (mimeType == "image/x-wmf" && canGetData(CF_METAFILEPICT, pDataObj));
}
bool QWindowsMimeMetafile::convertFromMime(
const FORMATETC & formatetc, const QMimeData * mimeData,
STGMEDIUM * pmedium) const
{
return false;
}
QVariant QWindowsMimeMetafile::convertToMime(
const QString & mimeType, IDataObject * pDataObj,
QVariant::Type preferredType) const
{
QVariant ret;
if (canConvertToMime(mimeType, pDataObj)) {
FORMATETC formatetc;
if (mimeType == "image/x-emf")
formatetc = setCf(CF_ENHMETAFILE);
if (mimeType == "image/x-wmf")
formatetc = setCf(CF_METAFILEPICT);
STGMEDIUM s;
QByteArray data;
int dataSize;
if (pDataObj->GetData(&formatetc, &s) == S_OK) {
if (s.tymed == TYMED_ENHMF) {
dataSize = GetEnhMetaFileBits(s.hEnhMetaFile, NULL, NULL);
data.resize(dataSize);
dataSize = GetEnhMetaFileBits(s.hEnhMetaFile, dataSize, (LPBYTE)data.data());
} else if (s.tymed == TYMED_MFPICT) {
dataSize = GetMetaFileBitsEx((HMETAFILE)s.hMetaFilePict, NULL, NULL);
data.resize(dataSize);
dataSize = GetMetaFileBitsEx((HMETAFILE)s.hMetaFilePict, dataSize, (LPBYTE)data.data());
}
data.detach();
ReleaseStgMedium(&s);
}
ret = data;
}
return ret;
}
QVector<FORMATETC> QWindowsMimeMetafile::formatsForMime(
const QString & mimeType, const QMimeData * mimeData) const
{
QVector<FORMATETC> formats;
if (mimeType == "image/x-emf")
formats += setCf(CF_ENHMETAFILE);
if (mimeType == "image/x-wmf")
formats += setCf(CF_METAFILEPICT);
return formats;
}
static QWindowsMimeMetafile * metafileWindowsMime;
#endif // Q_WS_WIN
#ifdef Q_WS_MACX
class QMacPasteboardMimeGraphics : public QMacPasteboardMime {
@ -137,6 +263,11 @@ GuiClipboard::GuiClipboard()
if (!graphicsPasteboardMime)
graphicsPasteboardMime = new QMacPasteboardMimeGraphics();
#endif // Q_WS_MACX
#ifdef Q_WS_WIN
if (!metafileWindowsMime)
metafileWindowsMime = new QWindowsMimeMetafile();
#endif // Q_WS_WIN
}
@ -177,6 +308,10 @@ FileName GuiClipboard::getPastedGraphicsFileName(Cursor const & cur,
{
// create file dialog filter according to the existing types in the clipboard
vector<Clipboard::GraphicsType> types;
if (hasGraphicsContents(Clipboard::EmfGraphicsType))
types.push_back(Clipboard::EmfGraphicsType);
if (hasGraphicsContents(Clipboard::WmfGraphicsType))
types.push_back(Clipboard::WmfGraphicsType);
if (hasGraphicsContents(Clipboard::LinkBackGraphicsType))
types.push_back(Clipboard::LinkBackGraphicsType);
if (hasGraphicsContents(Clipboard::PdfGraphicsType))
@ -196,11 +331,15 @@ FileName GuiClipboard::getPastedGraphicsFileName(Cursor const & cur,
map<Clipboard::GraphicsType, string> extensions;
map<Clipboard::GraphicsType, docstring> typeNames;
extensions[Clipboard::EmfGraphicsType] = "emf";
extensions[Clipboard::WmfGraphicsType] = "wmf";
extensions[Clipboard::LinkBackGraphicsType] = "linkback";
extensions[Clipboard::PdfGraphicsType] = "pdf";
extensions[Clipboard::PngGraphicsType] = "png";
extensions[Clipboard::JpegGraphicsType] = "jpeg";
typeNames[Clipboard::EmfGraphicsType] = _("Enhanced Metafile");
typeNames[Clipboard::WmfGraphicsType] = _("Windows Metafile");
typeNames[Clipboard::LinkBackGraphicsType] = _("LinkBack PDF");
typeNames[Clipboard::PdfGraphicsType] = _("PDF");
typeNames[Clipboard::PngGraphicsType] = _("PNG");
@ -329,6 +468,8 @@ FileName GuiClipboard::getAsGraphics(Cursor const & cur, GraphicsType type) cons
switch (type) {
case PdfGraphicsType: mime = pdf_mime_type; break;
case LinkBackGraphicsType: mime = pdf_mime_type; break;
case EmfGraphicsType: mime = emf_mime_type; break;
case WmfGraphicsType: mime = wmf_mime_type; break;
default: BOOST_ASSERT(false);
}
@ -415,12 +556,14 @@ bool GuiClipboard::hasGraphicsContents(Clipboard::GraphicsType type) const
return hasGraphicsContents(PdfGraphicsType)
|| hasGraphicsContents(PngGraphicsType)
|| hasGraphicsContents(JpegGraphicsType)
|| hasGraphicsContents(EmfGraphicsType)
|| hasGraphicsContents(WmfGraphicsType)
|| hasGraphicsContents(LinkBackGraphicsType);
}
QMimeData const * const source =
qApp->clipboard()->mimeData(QClipboard::Clipboard);
// handle image cases first
if (type == PngGraphicsType || type == JpegGraphicsType)
return source->hasImage();
@ -444,6 +587,8 @@ bool GuiClipboard::hasGraphicsContents(Clipboard::GraphicsType type) const
// compute mime for type
QString mime;
switch (type) {
case EmfGraphicsType: mime = emf_mime_type; break;
case WmfGraphicsType: mime = wmf_mime_type; break;
case PdfGraphicsType: mime = pdf_mime_type; break;
default: BOOST_ASSERT(false);
}