зеркало из https://github.com/mozilla/gecko-dev.git
add first stage of dragging images. advertise os-native image format to other applications. r=ccarlen/sr=alecf. bug# 138049
This commit is contained in:
pinkerton%netscape.com
Родитель
bf83785982
Коммит
4008c80d05
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@ -83,6 +83,19 @@
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#include "nsUnicharUtils.h"
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#include "nsHTMLAtoms.h"
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#include "nsIURI.h"
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#include "nsIImage.h"
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#include "nsIDocument.h"
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#include "nsIPresShell.h"
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#include "nsIPresContext.h"
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#include "nsIImageFrame.h"
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#include "nsIFrame.h"
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#include "nsLayoutAtoms.h"
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#include "imgIContainer.h"
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#include "imgIRequest.h"
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#include "gfxIImageFrame.h"
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#include "nsIInterfaceRequestor.h"
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NS_IMPL_ADDREF(nsContentAreaDragDrop)
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NS_IMPL_RELEASE(nsContentAreaDragDrop)
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@ -700,15 +713,15 @@ nsContentAreaDragDrop::GetEventDocument(nsIDOMEvent* inEvent, nsIDOMDocument** o
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//
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PRBool
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nsContentAreaDragDrop::BuildDragData(nsIDOMEvent* inMouseEvent, nsAString & outURLString, nsAString & outTitleString,
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nsAString & outHTMLString, PRBool* outIsAnchor)
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nsAString & outHTMLString, nsIImage** outImage, PRBool* outIsAnchor)
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{
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if ( !outIsAnchor )
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if ( !outIsAnchor || !outImage )
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return PR_FALSE;
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outURLString.Truncate();
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outTitleString.Truncate();
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outHTMLString.Truncate();
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*outImage = nsnull;
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*outIsAnchor = PR_FALSE;
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nsCOMPtr<nsIDOMUIEvent> uiEvent(do_QueryInterface(inMouseEvent));
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@ -821,6 +834,9 @@ nsContentAreaDragDrop::BuildDragData(nsIDOMEvent* inMouseEvent, nsAString & outU
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GetAnchorURL(parentAnchor, urlString);
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CreateLinkText(urlString, htmlString, htmlString);
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}
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// also grab the image data
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GetImageFromDOMNode(draggedNode, outImage);
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} // img
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else {
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nsCOMPtr<nsIDOMHTMLLinkElement> link(do_QueryInterface(draggedNode));
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@ -875,7 +891,8 @@ nsContentAreaDragDrop::BuildDragData(nsIDOMEvent* inMouseEvent, nsAString & outU
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//
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nsresult
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nsContentAreaDragDrop::CreateTransferable(const nsAString & inURLString, const nsAString & inTitleString,
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const nsAString & inHTMLString, PRBool inIsAnchor, nsITransferable** outTrans)
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const nsAString & inHTMLString, nsIImage* inImage, PRBool inIsAnchor,
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nsITransferable** outTrans)
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{
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if ( !outTrans )
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return NS_ERROR_FAILURE;
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@ -892,7 +909,7 @@ nsContentAreaDragDrop::CreateTransferable(const nsAString & inURLString, const n
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nsAutoString dragData ( inURLString );
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dragData += NS_LITERAL_STRING("\n");
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dragData += inTitleString;
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nsCOMPtr<nsISupportsWString> urlPrimitive(do_CreateInstance("@mozilla.org/supports-wstring;1"));
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nsCOMPtr<nsISupportsWString> urlPrimitive(do_CreateInstance(NS_SUPPORTS_WSTRING_CONTRACTID));
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if ( !urlPrimitive )
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return NS_ERROR_FAILURE;
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urlPrimitive->SetData(dragData.get());
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@ -900,7 +917,7 @@ nsContentAreaDragDrop::CreateTransferable(const nsAString & inURLString, const n
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}
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// add the full html
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nsCOMPtr<nsISupportsWString> htmlPrimitive(do_CreateInstance("@mozilla.org/supports-wstring;1"));
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nsCOMPtr<nsISupportsWString> htmlPrimitive(do_CreateInstance(NS_SUPPORTS_WSTRING_CONTRACTID));
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if ( !htmlPrimitive )
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return NS_ERROR_FAILURE;
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htmlPrimitive->SetData(PromiseFlatString(inHTMLString).get());
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@ -909,11 +926,22 @@ nsContentAreaDragDrop::CreateTransferable(const nsAString & inURLString, const n
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// add the plain (unicode) text. we use the url for text/unicode data if an anchor
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// is being dragged, rather than the title text of the link or the alt text for
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// an anchor image.
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nsCOMPtr<nsISupportsWString> textPrimitive(do_CreateInstance("@mozilla.org/supports-wstring;1"));
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nsCOMPtr<nsISupportsWString> textPrimitive(do_CreateInstance(NS_SUPPORTS_WSTRING_CONTRACTID));
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if ( !textPrimitive )
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return NS_ERROR_FAILURE;
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textPrimitive->SetData(PromiseFlatString(inIsAnchor ? inURLString : inTitleString).get());
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trans->SetTransferData(kUnicodeMime, textPrimitive, (inIsAnchor ? inURLString.Length() : inTitleString.Length()) * 2);
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trans->SetTransferData(kUnicodeMime, textPrimitive, (inIsAnchor ? inURLString.Length() : inTitleString.Length()) * 2);
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// add image data, if present. For now, all we're going to do with this is turn it
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// into a native data flavor, so indicate that with a new flavor so as not to confuse
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// anyone who is really registered for image/gif or image/jpg.
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if ( inImage ) {
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nsCOMPtr<nsISupportsInterfacePointer> ptrPrimitive(do_CreateInstance(NS_SUPPORTS_INTERFACE_POINTER_CONTRACTID));
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if ( !ptrPrimitive )
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return NS_ERROR_FAILURE;
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ptrPrimitive->SetData(inImage);
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trans->SetTransferData(kNativeImageMime, ptrPrimitive, sizeof(nsIImage*));
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}
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*outTrans = trans;
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NS_IF_ADDREF(*outTrans);
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@ -949,13 +977,14 @@ nsContentAreaDragDrop::DragGesture(nsIDOMEvent* inMouseEvent)
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nsAutoString urlString, titleString, htmlString;
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PRBool isAnchor = PR_FALSE;
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nsCOMPtr<nsIImage> image;
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// crawl the dom for the appropriate drag data depending on what was clicked
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PRBool startDrag = BuildDragData(inMouseEvent, urlString, titleString, htmlString, &isAnchor);
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PRBool startDrag = BuildDragData(inMouseEvent, urlString, titleString, htmlString, getter_AddRefs(image), &isAnchor);
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if ( startDrag ) {
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// build up the transferable with all this data.
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nsCOMPtr<nsITransferable> trans;
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nsresult rv = CreateTransferable(urlString, titleString, htmlString, isAnchor, getter_AddRefs(trans));
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nsresult rv = CreateTransferable(urlString, titleString, htmlString, image, isAnchor, getter_AddRefs(trans));
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if ( trans ) {
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// if the client has provided an override callback, let them manipulate
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// the flavors or drag data
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@ -990,3 +1019,104 @@ nsContentAreaDragDrop::HandleEvent(nsIDOMEvent *event)
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}
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//
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// GetImageFrame
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//
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// Finds the image from from a content node
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//
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nsresult
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nsContentAreaDragDrop::GetImageFrame(nsIContent* aContent, nsIDocument *aDocument, nsIPresContext *aPresContext,
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nsIPresShell *aPresShell, nsIImageFrame** aImageFrame)
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{
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NS_ENSURE_ARG_POINTER(aImageFrame);
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*aImageFrame = nsnull;
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nsresult rv = NS_ERROR_FAILURE;
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if (aDocument) {
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// Make sure the presentation is up-to-date
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rv = aDocument->FlushPendingNotifications();
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if (NS_FAILED(rv))
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return rv;
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}
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if (aContent && aDocument && aPresContext && aPresShell) {
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nsIFrame* frame = nsnull;
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rv = aPresShell->GetPrimaryFrameFor(aContent, &frame);
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if (NS_SUCCEEDED(rv) && frame) {
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nsCOMPtr<nsIAtom> type;
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frame->GetFrameType(getter_AddRefs(type));
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if (type.get() == nsLayoutAtoms::imageFrame) {
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nsIImageFrame* imageFrame;
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rv = frame->QueryInterface(NS_GET_IID(nsIImageFrame), (void**)&imageFrame);
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if (NS_FAILED(rv)) {
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NS_WARNING("Should not happen - frame is not image frame even though type is nsLayoutAtoms::imageFrame");
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return rv;
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}
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*aImageFrame = imageFrame;
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}
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else
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return NS_ERROR_FAILURE;
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}
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else
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rv = NS_OK;
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}
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return rv;
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}
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//
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// GetImage
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//
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// Given a dom node that's an image, finds the nsIImage associated with it.
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//
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nsresult
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nsContentAreaDragDrop::GetImageFromDOMNode(nsIDOMNode* inNode, nsIImage**outImage)
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{
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NS_ENSURE_ARG_POINTER(outImage);
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*outImage = nsnull;
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nsresult rv = NS_ERROR_NOT_AVAILABLE;
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nsCOMPtr<nsIContent> content(do_QueryInterface(inNode));
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if ( content ) {
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nsCOMPtr<nsIDocument> document;
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content->GetDocument(*getter_AddRefs(document));
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if ( document ) {
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nsCOMPtr<nsIPresShell> presShell;
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document->GetShellAt(0, getter_AddRefs(presShell));
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if ( presShell ) {
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nsCOMPtr<nsIPresContext> presContext;
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presShell->GetPresContext(getter_AddRefs(presContext));
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if (presContext) {
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nsCOMPtr<imgIContainer> imgContainer;
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nsIImageFrame* imageFrame = nsnull;
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if ( NS_SUCCEEDED(GetImageFrame(content, document, presContext, presShell, &imageFrame)) && imageFrame ) {
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nsCOMPtr<imgIRequest> imgRequest;
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imageFrame->GetImageRequest(getter_AddRefs(imgRequest));
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if (imgRequest)
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imgRequest->GetImage(getter_AddRefs(imgContainer));
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}
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else {
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// We could try the background image, but we really don't want to be dragging
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// the bg image in any case.
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}
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if (imgContainer) {
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nsCOMPtr<gfxIImageFrame> imgFrame;
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imgContainer->GetFrameAt(0, getter_AddRefs(imgFrame));
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if ( imgFrame ) {
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nsCOMPtr<nsIInterfaceRequestor> ir = do_QueryInterface(imgFrame);
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if ( ir )
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rv = ir->GetInterface(NS_GET_IID(nsIImage), (void**)outImage); // will addreff
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}
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}
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}
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}
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}
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}
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return rv;
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}
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@ -51,6 +51,12 @@ class nsISelection;
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class nsITransferable;
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class nsIOverrideDragSource;
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class nsIOverrideDropSite;
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class nsIImage;
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class nsIPresShell;
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class nsIPresContext;
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class nsIImageFrame;
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class nsIContent;
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class nsIDocument;
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// {1f34bc80-1bc7-11d6-a384-d705dd0746fc}
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@ -99,11 +105,14 @@ private:
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static void GetNodeString(nsIDOMNode* inNode, nsAString & outNodeString);
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static void NormalizeSelection(nsIDOMNode* inBaseNode, nsISelection* inSelection);
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static void GetEventDocument(nsIDOMEvent* inEvent, nsIDOMDocument** outDocument);
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static nsresult GetImageFromDOMNode(nsIDOMNode* inNode, nsIImage** outImage);
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static nsresult GetImageFrame(nsIContent* aContent, nsIDocument *aDocument, nsIPresContext *aPresContext,
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nsIPresShell *aPresShell, nsIImageFrame** aImageFrame);
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PRBool BuildDragData(nsIDOMEvent* inMouseEvent, nsAString & outURLString, nsAString & outTitleString,
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nsAString & outHTMLString, PRBool* outIsAnchor);
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nsAString & outHTMLString, nsIImage** outImage, PRBool* outIsAnchor);
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nsresult CreateTransferable(const nsAString & inURLString, const nsAString & inTitleString,
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const nsAString & inHTMLString, PRBool inIsAnchor,
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const nsAString & inHTMLString, nsIImage* inImage, PRBool inIsAnchor,
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nsITransferable** outTrans);
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void ExtractURLFromData(const nsACString & inFlavor, nsISupports* inDataWrapper, PRUint32 inDataLen,
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nsAString & outURL);
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@ -38,6 +38,7 @@
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#define kGIFImageMime "image/gif"
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#define kFileMime "application/x-moz-file"
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#define kURLMime "text/x-moz-url"
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#define kNativeImageMime "application/x-moz-nativeimage"
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%}
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@ -77,6 +77,8 @@
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#include "nsIXULContent.h"
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#include "nsIDOMElement.h"
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#include "nsIImageMac.h"
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#include "nsIImage.h"
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// we need our own stuff for MacOS because of nsIDragSessionMac.
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@ -673,7 +675,8 @@ nsDragService :: DragSendDataProc ( FlavorType inFlavor, void* inRefCon, ItemRef
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retVal = ::SetDragItemFlavorData ( inDragRef, inItemRef, inFlavor, data, dataSize, 0 );
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NS_ASSERTION ( retVal == noErr, "SDIFD failed in DragSendDataProc" );
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}
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nsMemory::Free ( data );
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if ( data )
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nsMemory::Free ( data );
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} // if valid refcon
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return retVal;
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@ -729,22 +732,47 @@ nsDragService :: GetDataForFlavor ( nsISupportsArray* inDragItems, DragReference
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*outDataSize = 0;
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nsCOMPtr<nsISupports> data;
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if ( NS_SUCCEEDED(item->GetTransferData(actualFlavor, getter_AddRefs(data), outDataSize)) ) {
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nsPrimitiveHelpers::CreateDataFromPrimitive ( actualFlavor, data, outData, *outDataSize );
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// if required, do the extra work to convert unicode to plain text and replace the output
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// values with the plain text.
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if ( needToDoConversionToPlainText ) {
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char* plainTextData = nsnull;
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PRUnichar* castedUnicode = NS_REINTERPRET_CAST(PRUnichar*, *outData);
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PRInt32 plainTextLen = 0;
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nsPrimitiveHelpers::ConvertUnicodeToPlatformPlainText ( castedUnicode, *outDataSize / 2, &plainTextData, &plainTextLen );
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if ( *outData ) {
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nsMemory::Free(*outData);
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*outData = plainTextData;
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*outDataSize = plainTextLen;
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if ( strcmp(actualFlavor, kNativeImageMime) == 0 ) {
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// unwrap the image from its nsISupportsPrimitive wrapper
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nsCOMPtr<nsISupportsInterfacePointer> ptr(do_QueryInterface(data));
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nsCOMPtr<nsIImage> image;
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ptr->GetData(getter_AddRefs(image));
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// we have an image, which is in the transferable as an nsIImage. Convert it
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// to PICT (PicHandle) and put those bits on the clipboard. The actual size
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// of the picture is the size of the handle, not sizeof(Picture).
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nsCOMPtr<nsIImageMac> imageMac ( do_QueryInterface(image) );
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if ( imageMac ) {
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PicHandle picture = nsnull;
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imageMac->ConvertToPICT ( &picture );
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*outDataSize = ::GetHandleSize((Handle)picture);
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*outData = nsMemory::Alloc(*outDataSize);
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::HLock((Handle)picture);
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::BlockMoveData(*picture, *outData, *outDataSize);
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::HUnlock((Handle)picture);
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::KillPicture(picture);
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}
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else
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retVal = cantGetFlavorErr;
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NS_WARNING ( "Image isn't an nsIImageMac in transferable" );
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}
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else {
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nsPrimitiveHelpers::CreateDataFromPrimitive ( actualFlavor, data, outData, *outDataSize );
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// if required, do the extra work to convert unicode to plain text and replace the output
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// values with the plain text.
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if ( needToDoConversionToPlainText ) {
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char* plainTextData = nsnull;
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PRUnichar* castedUnicode = NS_REINTERPRET_CAST(PRUnichar*, *outData);
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PRInt32 plainTextLen = 0;
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nsPrimitiveHelpers::ConvertUnicodeToPlatformPlainText ( castedUnicode, *outDataSize / 2, &plainTextData, &plainTextLen );
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if ( *outData ) {
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nsMemory::Free(*outData);
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*outData = plainTextData;
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*outDataSize = plainTextLen;
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}
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else
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retVal = cantGetFlavorErr;
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}
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}
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}
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else
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@ -95,18 +95,22 @@ nsMimeMapperMac :: MapMimeTypeToMacOSType ( const char* aMimeStr, PRBool inAddIf
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// pick them up by special casing MapMacsOSTypeToMimeType(). This means that
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// the low two bytes of the generated flavor can be used as an index into the list.
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if ( !format ) {
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if ( PL_strcmp(aMimeStr, kTextMime) == 0 )
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if ( PL_strcmp(aMimeStr, kUnicodeMime) == 0 )
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format = kScrapFlavorTypeUnicode;
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else if ( PL_strcmp(aMimeStr, kTextMime) == 0 )
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format = kScrapFlavorTypeText;
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else if ( PL_strcmp(aMimeStr, kFileMime) == 0 )
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format = flavorTypeHFS;
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else if ( PL_strcmp(aMimeStr, kNativeImageMime) == 0 )
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format = kScrapFlavorTypePicture;
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#if NOT_YET
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else if ( PL_strcmp(aMimeStr, kPNGImageMime) == 0 )
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format = kScrapFlavorTypePicture;
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else if ( PL_strcmp(aMimeStr, kJPEGImageMime) == 0 )
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format = kScrapFlavorTypePicture;
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else if ( PL_strcmp(aMimeStr, kGIFImageMime) == 0 )
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format = kScrapFlavorTypePicture;
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else if ( PL_strcmp(aMimeStr, kUnicodeMime) == 0 )
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format = kScrapFlavorTypeUnicode;
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#endif
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else if ( inAddIfNotPresent ) {
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// create the flavor based on the unique id in the lower two bytes and 'MZ' in the
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@ -143,6 +147,10 @@ nsMimeMapperMac :: MapMacOSTypeToMimeType ( ResType inMacType, nsCAutoString & o
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case kScrapFlavorTypeUnicode: outMimeStr = kUnicodeMime; break;
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case flavorTypeHFS: outMimeStr = kFileMime; break;
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||||
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// if someone gives us PICT (or we could have put it there), use
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// the native image mime type.
|
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case kScrapFlavorTypePicture: outMimeStr = kNativeImageMime; break;
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||||
// This flavor is the old 4.x Composer flavor for HTML. The actual data is a binary
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// data structure which we do NOT want to deal with in any way shape or form. I am
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// only including this flavor here so we don't accidentally use it ourselves and
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|
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@ -199,7 +199,7 @@ nsresult nsClipboard::SetupNativeDataObject(nsITransferable * aTransferable, IDa
|
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#endif
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||||
}
|
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else if ( strcmp(flavorStr, kPNGImageMime) == 0 || strcmp(flavorStr, kJPEGImageMime) == 0 ||
|
||||
strcmp(flavorStr, kGIFImageMime) == 0 ) {
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||||
strcmp(flavorStr, kGIFImageMime) == 0 || strcmp(flavorStr, kNativeImageMime) == 0 ) {
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||||
// if we're an image, register the native bitmap flavor
|
||||
FORMATETC imageFE;
|
||||
SET_FORMATETC(imageFE, CF_DIB, 0, DVASPECT_CONTENT, -1, TYMED_HGLOBAL)
|
||||
|
|
|
|||
|
|
@ -382,10 +382,21 @@ nsDataObj :: GetDib ( const nsACString& inFlavor, FORMATETC &, STGMEDIUM & aSTG
|
|||
PRNTDEBUG("nsDataObj::GetDib\n");
|
||||
ULONG result = E_FAIL;
|
||||
|
||||
|
||||
PRUint32 len = 0;
|
||||
nsCOMPtr<nsISupports> genericDataWrapper;
|
||||
mTransferable->GetTransferData(PromiseFlatCString(inFlavor).get(), getter_AddRefs(genericDataWrapper), &len);
|
||||
nsCOMPtr<nsIImage> image ( do_QueryInterface(genericDataWrapper) );
|
||||
if ( !image ) {
|
||||
// In the 0.9.4 timeframe, I had some embedding clients put the nsIImage directly into the
|
||||
// transferable. Newer code, however, wraps the nsIImage in a nsISupportsInterfacePointer.
|
||||
// We should be backwards compatibile with code already out in the field. If we can't find
|
||||
// the image directly out of the transferable, unwrap the image from its wrapper.
|
||||
nsCOMPtr<nsISupportsInterfacePointer> ptr(do_QueryInterface(genericDataWrapper));
|
||||
if ( ptr )
|
||||
ptr->GetData(getter_AddRefs(image));
|
||||
}
|
||||
|
||||
if ( image ) {
|
||||
// use a the helper class to build up a bitmap. We now own the bits,
|
||||
// and pass them back to the OS in |aSTG|.
|
||||
|
|
|
|||
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