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Fix copy code in nsClipboard

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This commit is contained in:
akkana%netscape.com 1999-04-20 02:12:30 +00:00
parent 3c9b98c2d0
commit b30410d6fe
2 changed files with 81 additions and 55 deletions
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134
widget/src/gtk/nsClipboard.cpp
View File

@ -35,9 +35,6 @@ static NS_DEFINE_IID(kIDataFlavorIID, NS_IDATAFLAVOR_IID);
static NS_DEFINE_IID(kIWidgetIID, NS_IWIDGET_IID);
static NS_DEFINE_IID(kWindowCID, NS_WINDOW_CID);
static GtkTargetEntry targets[] = {
{ "strings n stuff", GDK_SELECTION_TYPE_STRING, GDK_SELECTION_TYPE_STRING }
};
// The class statics:
GtkWidget* nsClipboard::sWidget = 0;
@ -121,7 +118,7 @@ NS_IMETHODIMP nsClipboard::SetNativeClipboardData()
// make sure we have a good transferable
if (nsnull == mTransferable) {
printf("SetNativeClipboardData: no transferable!\n");
printf(" SetNativeClipboardData: no transferable!\n");
return NS_ERROR_FAILURE;
}
@ -186,6 +183,28 @@ NS_IMETHODIMP nsClipboard::ForceDataToClipboard()
}
//
// GTK Weirdness!
// This is here in the hope of being able to call
// gtk_selection_add_targets(w, GDK_SELECTION_PRIMARY,
// targets,
// 1);
// instead of
// gtk_selection_add_target(sWidget,
// GDK_SELECTION_PRIMARY,
// GDK_SELECTION_TYPE_STRING,
// GDK_SELECTION_TYPE_STRING);
// but it turns out that this changes the whole gtk selection model;
// when calling add_targets copy uses selection_clear_event and the
// data structure needs to be filled in in a way that we haven't
// figured out; when using add_target copy uses selection_get and
// the data structure is already filled in as much as it needs to be.
// Some gtk internals wizard will need to solve this mystery before
// we can use add_targets().
//static GtkTargetEntry targets[] = {
// { "strings n stuff", GDK_SELECTION_TYPE_STRING, GDK_SELECTION_TYPE_STRING }
//};
//
void nsClipboard::SetTopLevelWidget(GtkWidget* w)
{
@ -208,7 +227,7 @@ void nsClipboard::SetTopLevelWidget(GtkWidget* w)
return;
}
// Not sure what this does:
// Handle selection requests if we called gtk_selection_add_target:
gtk_signal_connect(GTK_OBJECT(sWidget), "selection_get",
GTK_SIGNAL_FUNC(nsClipboard::SelectionGetCB),
clipboard);
@ -223,7 +242,8 @@ void nsClipboard::SetTopLevelWidget(GtkWidget* w)
GTK_SIGNAL_FUNC(nsClipboard::SelectionReceivedCB),
clipboard);
// Respond to requests for the selection:
#if 0
// Handle selection requests if we called gtk_selection_add_targets:
gtk_signal_connect(GTK_OBJECT(sWidget), "selection_request_event",
GTK_SIGNAL_FUNC(nsClipboard::SelectionRequestCB),
clipboard);
@ -232,26 +252,70 @@ void nsClipboard::SetTopLevelWidget(GtkWidget* w)
gtk_signal_connect(GTK_OBJECT(sWidget), "selection_notify_event",
GTK_SIGNAL_FUNC(nsClipboard::SelectionNotifyCB),
clipboard);
#endif
// Hmm, sometimes we need this, sometimes not. I'm not clear why.
// See also long comment above on why we don't register a whole target list.
// Register all the target types we handle:
gtk_selection_add_targets(w, GDK_SELECTION_PRIMARY,
targets,
1);
gtk_selection_add_target(sWidget,
GDK_SELECTION_PRIMARY,
GDK_SELECTION_TYPE_STRING,
GDK_SELECTION_TYPE_STRING);
// We're done with our reference to the clipboard.
NS_IF_RELEASE(clipboard);
}
//
// This is the callback which is called when another app
// requests the selection.
//
void nsClipboard::SelectionGetCB(GtkWidget *widget,
GtkSelectionData *selection_data,
//guint /*info*/,
//guint /*time*/,
gpointer data)
GtkSelectionData *aSelectionData,
guint /*info*/,
guint /*time*/,
gpointer aData)
{
printf(" nsClipboard::SelectionGetCB\n");
nsClipboard *clipboard = (nsClipboard *)aData;
void *clipboardData;
PRUint32 dataLength;
nsresult rv;
// Make sure we have a transferable:
if (!clipboard->mTransferable) {
printf("Clipboard has no transferable!\n");
return;
}
// XXX hack, string-only for now.
// Create string data-flavor.
nsDataFlavor *dataFlavor = new nsDataFlavor();
// For some reason the XIF data flavor uses text/txt instead of text/plain:
dataFlavor->Init("text/txt", "text/txt");
// Get data out of transferable.
rv = clipboard->mTransferable->GetTransferData(dataFlavor,
&clipboardData,
&dataLength);
// Currently we only offer the data in GDK_SELECTION_TYPE_STRING format.
if (NS_SUCCEEDED(rv) && clipboardData && dataLength > 0) {
gtk_selection_data_set(aSelectionData,
GDK_SELECTION_TYPE_STRING, 8,
(unsigned char *)clipboardData,
dataLength-1);
// Need to subtract one from dataLength, passed in from the transferable,
// to avoid getting a bogus null char.
// the format arg, "8", indicates string data with no endianness
}
else
printf("Transferable didn't support the data flavor\n");
delete dataFlavor;
}
@ -284,46 +348,6 @@ nsClipboard::SelectionRequestCB (GtkWidget *aWidget,
gpointer aData)
{
printf(" nsClipboard::SelectionRequestCB\n");
nsClipboard *clipboard = (nsClipboard *)aData;
void *clipboardData;
PRUint32 dataLength;
nsresult rv;
// Make sure we have a transferable:
if (!clipboard->mTransferable) {
printf("Clipboard has no transferable!\n");
return;
}
// XXX hack, string-only for now.
// Create string data-flavor.
nsDataFlavor *dataFlavor = new nsDataFlavor();
// For some reason the XIF data flavor uses text/txt instead of text/plain:
dataFlavor->Init("text/txt", "text/txt");
// Get data out of transferable.
rv = clipboard->mTransferable->GetTransferData(dataFlavor,
&clipboardData,
&dataLength);
// Currently we only offer the data in GDK_SELECTION_TYPE_STRING format.
if (NS_SUCCEEDED(rv) && clipboardData && dataLength > 0) {
//((unsigned char*)(clipboardData))[dataLength+1] = 0;
printf(" nsClipboard::SelectionRequestCB, data = %s, length=%d\n",
(char*)clipboardData, dataLength);
// Next call crashes! I don't know why, still working on it. ...Akk
gtk_selection_data_set(aSelectionData,
GDK_SELECTION_TYPE_STRING, 8,
(unsigned char *)clipboardData,
dataLength);
// the format arg, "8", indicates string data with no endianness
}
else
printf("Transferable didn't support the data flavor\n");
delete dataFlavor;
}
void

2
widget/src/gtk/nsClipboard.h
View File

@ -57,6 +57,8 @@ protected:
static void SelectionGetCB(GtkWidget *widget,
GtkSelectionData *selection_data,
guint /*info*/,
guint /*time*/,
gpointer data);
static void SelectionClearCB(GtkWidget *widget,