nsresult
nsHTMLEditor::StartResizing(nsIDOMElement *aHandle)
{
// First notify the listeners if any
PRInt32 listenersCount = objectResizeEventListeners.Count();
if (listenersCount) {
nsCOMPtr<nsIHTMLObjectResizeListener> listener;
PRInt32 index;
for (index = 0; index < listenersCount; index++) {
listener = objectResizeEventListeners[index];
listener->OnStartResizing(mResizedObject);
}
}
mIsResizing = PR_TRUE;
mActivatedHandle = aHandle;
mActivatedHandle->SetAttribute(NS_LITERAL_STRING("_moz_activated"), NS_LITERAL_STRING("true"));
// do we want to preserve ratio or not?
PRBool preserveRatio = nsHTMLEditUtils::IsImage(mResizedObject);
nsresult result;
nsCOMPtr<nsIPrefBranch> prefBranch =
do_GetService(NS_PREFSERVICE_CONTRACTID, &result);
if (NS_SUCCEEDED(result) && prefBranch && preserveRatio) {
result = prefBranch->GetBoolPref("editor.resizing.preserve_ratio", &preserveRatio);
if (NS_FAILED(result)) {
// just in case Anvil does not update its prefs file
// and because it really does not make sense to me to allow free
// resizing on corners without a modifier key
preserveRatio = PR_TRUE;
}
}
// the way we change the position/size of the shadow depends on
// the handle
nsAutoString locationStr;
aHandle->GetAttribute(NS_LITERAL_STRING("anonlocation"), locationStr);
if (locationStr.Equals(kTopLeft)) {
SetResizeIncrements(1, 1, -1, -1, preserveRatio);
}
else if (locationStr.Equals(kTop)) {
SetResizeIncrements(0, 1, 0, -1, PR_FALSE);
}
else if (locationStr.Equals(kTopRight)) {
SetResizeIncrements(0, 1, 1, -1, preserveRatio);
}
else if (locationStr.Equals(kLeft)) {
SetResizeIncrements(1, 0, -1, 0, PR_FALSE);
}
else if (locationStr.Equals(kRight)) {
SetResizeIncrements(0, 0, 1, 0, PR_FALSE);
}
else if (locationStr.Equals(kBottomLeft)) {
SetResizeIncrements(1, 0, -1, 1, preserveRatio);
}
else if (locationStr.Equals(kBottom)) {
SetResizeIncrements(0, 0, 0, 1, PR_FALSE);
}
else if (locationStr.Equals(kBottomRight)) {
SetResizeIncrements(0, 0, 1, 1, preserveRatio);
}
// make the shadow appear
mResizingShadow->RemoveAttribute(NS_LITERAL_STRING("class"));
// position it
mHTMLCSSUtils->SetCSSPropertyPixels(mResizingShadow,
NS_LITERAL_STRING("width"),
mResizedObjectWidth);
mHTMLCSSUtils->SetCSSPropertyPixels(mResizingShadow,
NS_LITERAL_STRING("height"),
mResizedObjectHeight);
// add a mouse move listener to the editor
if (!mMouseMotionListenerP) {
mMouseMotionListenerP = new ResizerMouseMotionListener(this);
if (!mMouseMotionListenerP) {
return NS_ERROR_OUT_OF_MEMORY;
}
nsCOMPtr<nsPIDOMEventTarget> piTarget = GetPIDOMEventTarget();
nsCOMPtr<nsIDOMEventTarget> target = do_QueryInterface(piTarget);
NS_ENSURE_TRUE(target, NS_ERROR_FAILURE);
result = target->AddEventListener(NS_LITERAL_STRING("mousemove"),
mMouseMotionListenerP, PR_TRUE);
NS_ASSERTION(NS_SUCCEEDED(result),
"failed to register mouse motion listener");
}
return result;
}
nsresult
HTMLEditor::StartResizing(nsIDOMElement* aHandle)
{
mIsResizing = true;
mActivatedHandle = do_QueryInterface(aHandle);
NS_ENSURE_STATE(mActivatedHandle || !aHandle);
mActivatedHandle->SetAttr(kNameSpaceID_None, nsGkAtoms::_moz_activated,
NS_LITERAL_STRING("true"), true);
// do we want to preserve ratio or not?
bool preserveRatio = HTMLEditUtils::IsImage(mResizedObject) &&
Preferences::GetBool("editor.resizing.preserve_ratio", true);
// the way we change the position/size of the shadow depends on
// the handle
nsAutoString locationStr;
aHandle->GetAttribute(NS_LITERAL_STRING("anonlocation"), locationStr);
if (locationStr.Equals(kTopLeft)) {
SetResizeIncrements(1, 1, -1, -1, preserveRatio);
} else if (locationStr.Equals(kTop)) {
SetResizeIncrements(0, 1, 0, -1, false);
} else if (locationStr.Equals(kTopRight)) {
SetResizeIncrements(0, 1, 1, -1, preserveRatio);
} else if (locationStr.Equals(kLeft)) {
SetResizeIncrements(1, 0, -1, 0, false);
} else if (locationStr.Equals(kRight)) {
SetResizeIncrements(0, 0, 1, 0, false);
} else if (locationStr.Equals(kBottomLeft)) {
SetResizeIncrements(1, 0, -1, 1, preserveRatio);
} else if (locationStr.Equals(kBottom)) {
SetResizeIncrements(0, 0, 0, 1, false);
} else if (locationStr.Equals(kBottomRight)) {
SetResizeIncrements(0, 0, 1, 1, preserveRatio);
}
// make the shadow appear
mResizingShadow->UnsetAttr(kNameSpaceID_None, nsGkAtoms::_class, true);
// position it
mCSSEditUtils->SetCSSPropertyPixels(*mResizingShadow, *nsGkAtoms::width,
mResizedObjectWidth);
mCSSEditUtils->SetCSSPropertyPixels(*mResizingShadow, *nsGkAtoms::height,
mResizedObjectHeight);
// add a mouse move listener to the editor
nsresult result = NS_OK;
if (!mMouseMotionListenerP) {
mMouseMotionListenerP = new ResizerMouseMotionListener(*this);
if (!mMouseMotionListenerP) {
return NS_ERROR_OUT_OF_MEMORY;
}
nsCOMPtr<nsIDOMEventTarget> target = GetDOMEventTarget();
NS_ENSURE_TRUE(target, NS_ERROR_FAILURE);
result = target->AddEventListener(NS_LITERAL_STRING("mousemove"),
mMouseMotionListenerP, true);
NS_ASSERTION(NS_SUCCEEDED(result),
"failed to register mouse motion listener");
}
return result;
}
