Magic-Mirror/gecko-dev
1
0
Fork 0
mirror of https://github.com/mozilla/gecko-dev.git synced 2024-10-20 00:35:44 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity
99a921d037
gecko-dev/editor/libeditor/HTMLEditorObjectResizer.cpp
Masayuki Nakano d40825b1e4 Bug 1463327 - part 3: Change scope of some methods of HTMLEditor which won't be called by non-helper classes of editing to protected r=m_kato 
HTMLEditor has 2 type of public methods.  One is rue-public methods.  I.e.,
they should be able to be called by anybody.  E.g., command handlers, event
listeners, or JS via nsIEditor interface.  The other is semi-public methods.
They are not called by the above examples but called by other classes which
are helper classes to handle edit actions.  E.g., TextEditRules, HTMLEditRules,
HTMLEditUtils, CSSEditUtils and Transaction classes.

When we will implement InputEvent.inputType, we need to create new stack
class and create its instance at every true-public methods to manage current
inputType (like TextEditRules::AutoSafeEditorData).  Therefore, it should not
happen that new code starts to call semi-public methods without the new
stack class instance.

For preventing this issue, we should make HTMLEditor have only the true-public
methods as public.  The other public methods should be protected and their
users should be friend classes.  Then, we can protect such method from external
classes.

Note that this patch just moves the methods without any changes in HTMLEditor.h
(except removes BlockTransformationType since it's unused and replaces
ResizingRequestID with new enum class ResizeAt since normal enum isn't hit by
searchfox.org).

MozReview-Commit-ID: 7PC8E8vD7w2

--HG--
extra : rebase_source : 13f51565f2b89ab816ba529af18ee88193a9c932
2018-05-22 18:28:50 +09:00

961 lines
30 KiB
C++
Raw Blame History

/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "mozilla/HTMLEditor.h"
#include "HTMLEditorObjectResizerUtils.h"
#include "HTMLEditUtils.h"
#include "mozilla/DebugOnly.h"
#include "mozilla/EditorUtils.h"
#include "mozilla/LookAndFeel.h"
#include "mozilla/MathAlgorithms.h"
#include "mozilla/Preferences.h"
#include "mozilla/mozalloc.h"
#include "mozilla/dom/Event.h"
#include "mozilla/dom/MouseEvent.h"
#include "mozilla/dom/EventTarget.h"
#include "nsAString.h"
#include "nsAlgorithm.h"
#include "nsCOMPtr.h"
#include "nsDebug.h"
#include "nsError.h"
#include "nsGkAtoms.h"
#include "nsAtom.h"
#include "nsIContent.h"
#include "nsID.h"
#include "nsIDocument.h"
#include "nsIPresShell.h"
#include "nsISupportsUtils.h"
#include "nsPIDOMWindow.h"
#include "nsReadableUtils.h"
#include "nsString.h"
#include "nsStringFwd.h"
#include "nscore.h"
#include <algorithm>
namespace mozilla {
using namespace dom;
/******************************************************************************
* mozilla::DocumentResizeEventListener
******************************************************************************/
NS_IMPL_ISUPPORTS(DocumentResizeEventListener, nsIDOMEventListener)
DocumentResizeEventListener::DocumentResizeEventListener(
HTMLEditor& aHTMLEditor)
: mHTMLEditorWeak(&aHTMLEditor)
{
}
NS_IMETHODIMP
DocumentResizeEventListener::HandleEvent(Event* aMouseEvent)
{
RefPtr<HTMLEditor> htmlEditor = mHTMLEditorWeak.get();
if (htmlEditor) {
return htmlEditor->RefreshResizers();
}
return NS_OK;
}
/******************************************************************************
* mozilla::ResizerMouseMotionListener
******************************************************************************/
NS_IMPL_ISUPPORTS(ResizerMouseMotionListener, nsIDOMEventListener)
ResizerMouseMotionListener::ResizerMouseMotionListener(HTMLEditor& aHTMLEditor)
: mHTMLEditorWeak(&aHTMLEditor)
{
}
NS_IMETHODIMP
ResizerMouseMotionListener::HandleEvent(Event* aMouseEvent)
{
MouseEvent* mouseEvent = aMouseEvent->AsMouseEvent();
if (!mouseEvent) {
//non-ui event passed in. bad things.
return NS_OK;
}
// Don't do anything special if not an HTML object resizer editor
RefPtr<HTMLEditor> htmlEditor = mHTMLEditorWeak.get();
if (htmlEditor) {
// check if we have to redisplay a resizing shadow
htmlEditor->OnMouseMove(mouseEvent);
}
return NS_OK;
}
/******************************************************************************
* mozilla::HTMLEditor
******************************************************************************/
ManualNACPtr
HTMLEditor::CreateResizer(int16_t aLocation,
nsIContent& aParentContent)
{
ManualNACPtr ret =
CreateAnonymousElement(nsGkAtoms::span,
aParentContent,
NS_LITERAL_STRING("mozResizer"),
false);
if (NS_WARN_IF(!ret)) {
return nullptr;
}
// add the mouse listener so we can detect a click on a resizer
ret->AddEventListener(NS_LITERAL_STRING("mousedown"), mEventListener,
true);
nsAutoString locationStr;
switch (aLocation) {
case nsIHTMLObjectResizer::eTopLeft:
locationStr = kTopLeft;
break;
case nsIHTMLObjectResizer::eTop:
locationStr = kTop;
break;
case nsIHTMLObjectResizer::eTopRight:
locationStr = kTopRight;
break;
case nsIHTMLObjectResizer::eLeft:
locationStr = kLeft;
break;
case nsIHTMLObjectResizer::eRight:
locationStr = kRight;
break;
case nsIHTMLObjectResizer::eBottomLeft:
locationStr = kBottomLeft;
break;
case nsIHTMLObjectResizer::eBottom:
locationStr = kBottom;
break;
case nsIHTMLObjectResizer::eBottomRight:
locationStr = kBottomRight;
break;
}
nsresult rv =
ret->SetAttr(kNameSpaceID_None, nsGkAtoms::anonlocation, locationStr, true);
NS_ENSURE_SUCCESS(rv, nullptr);
return Move(ret);
}
ManualNACPtr
HTMLEditor::CreateShadow(nsIContent& aParentContent,
Element& aOriginalObject)
{
// let's create an image through the element factory
RefPtr<nsAtom> name;
if (HTMLEditUtils::IsImage(&aOriginalObject)) {
name = nsGkAtoms::img;
} else {
name = nsGkAtoms::span;
}
return CreateAnonymousElement(name, aParentContent,
NS_LITERAL_STRING("mozResizingShadow"), true);
}
ManualNACPtr
HTMLEditor::CreateResizingInfo(nsIContent& aParentContent)
{
// let's create an info box through the element factory
return CreateAnonymousElement(nsGkAtoms::span, aParentContent,
NS_LITERAL_STRING("mozResizingInfo"), true);
}
nsresult
HTMLEditor::SetAllResizersPosition()
{
NS_ENSURE_TRUE(mTopLeftHandle, NS_ERROR_FAILURE);
int32_t x = mResizedObjectX;
int32_t y = mResizedObjectY;
int32_t w = mResizedObjectWidth;
int32_t h = mResizedObjectHeight;
// now let's place all the resizers around the image
// get the size of resizers
nsAutoString value;
float resizerWidth, resizerHeight;
RefPtr<nsAtom> dummyUnit;
CSSEditUtils::GetComputedProperty(*mTopLeftHandle, *nsGkAtoms::width,
value);
CSSEditUtils::ParseLength(value, &resizerWidth, getter_AddRefs(dummyUnit));
CSSEditUtils::GetComputedProperty(*mTopLeftHandle, *nsGkAtoms::height,
value);
CSSEditUtils::ParseLength(value, &resizerHeight, getter_AddRefs(dummyUnit));
int32_t rw = (int32_t)((resizerWidth + 1) / 2);
int32_t rh = (int32_t)((resizerHeight+ 1) / 2);
SetAnonymousElementPosition(x-rw, y-rh, mTopLeftHandle);
SetAnonymousElementPosition(x+w/2-rw, y-rh, mTopHandle);
SetAnonymousElementPosition(x+w-rw-1, y-rh, mTopRightHandle);
SetAnonymousElementPosition(x-rw, y+h/2-rh, mLeftHandle);
SetAnonymousElementPosition(x+w-rw-1, y+h/2-rh, mRightHandle);
SetAnonymousElementPosition(x-rw, y+h-rh-1, mBottomLeftHandle);
SetAnonymousElementPosition(x+w/2-rw, y+h-rh-1, mBottomHandle);
SetAnonymousElementPosition(x+w-rw-1, y+h-rh-1, mBottomRightHandle);
return NS_OK;
}
NS_IMETHODIMP
HTMLEditor::RefreshResizers()
{
// nothing to do if resizers are not displayed...
NS_ENSURE_TRUE(mResizedObject, NS_OK);
nsresult rv =
GetPositionAndDimensions(
*mResizedObject,
mResizedObjectX,
mResizedObjectY,
mResizedObjectWidth,
mResizedObjectHeight,
mResizedObjectBorderLeft,
mResizedObjectBorderTop,
mResizedObjectMarginLeft,
mResizedObjectMarginTop);
NS_ENSURE_SUCCESS(rv, rv);
rv = SetAllResizersPosition();
NS_ENSURE_SUCCESS(rv, rv);
return SetShadowPosition(mResizingShadow, mResizedObject,
mResizedObjectX, mResizedObjectY);
}
NS_IMETHODIMP
HTMLEditor::ShowResizers(Element* aResizedElement)
{
if (NS_WARN_IF(!aResizedElement)) {
return NS_ERROR_NULL_POINTER;
}
return ShowResizers(*aResizedElement);
}
nsresult
HTMLEditor::ShowResizers(Element& aResizedElement)
{
nsresult rv = ShowResizersInner(aResizedElement);
if (NS_FAILED(rv)) {
HideResizers();
}
return rv;
}
nsresult
HTMLEditor::ShowResizersInner(Element& aResizedElement)
{
if (mResizedObject) {
NS_ERROR("call HideResizers first");
return NS_ERROR_UNEXPECTED;
}
nsCOMPtr<nsIContent> parentContent = aResizedElement.GetParent();
if (NS_WARN_IF(!parentContent)) {
return NS_ERROR_FAILURE;
}
if (NS_WARN_IF(!IsDescendantOfEditorRoot(&aResizedElement))) {
return NS_ERROR_UNEXPECTED;
}
mResizedObject = &aResizedElement;
// The resizers and the shadow will be anonymous siblings of the element.
mTopLeftHandle =
CreateResizer(nsIHTMLObjectResizer::eTopLeft, *parentContent);
NS_ENSURE_TRUE(mTopLeftHandle, NS_ERROR_FAILURE);
mTopHandle = CreateResizer(nsIHTMLObjectResizer::eTop, *parentContent);
NS_ENSURE_TRUE(mTopHandle, NS_ERROR_FAILURE);
mTopRightHandle =
CreateResizer(nsIHTMLObjectResizer::eTopRight, *parentContent);
NS_ENSURE_TRUE(mTopRightHandle, NS_ERROR_FAILURE);
mLeftHandle = CreateResizer(nsIHTMLObjectResizer::eLeft, *parentContent);
NS_ENSURE_TRUE(mLeftHandle, NS_ERROR_FAILURE);
mRightHandle = CreateResizer(nsIHTMLObjectResizer::eRight, *parentContent);
NS_ENSURE_TRUE(mRightHandle, NS_ERROR_FAILURE);
mBottomLeftHandle =
CreateResizer(nsIHTMLObjectResizer::eBottomLeft, *parentContent);
NS_ENSURE_TRUE(mBottomLeftHandle, NS_ERROR_FAILURE);
mBottomHandle = CreateResizer(nsIHTMLObjectResizer::eBottom, *parentContent);
NS_ENSURE_TRUE(mBottomHandle, NS_ERROR_FAILURE);
mBottomRightHandle =
CreateResizer(nsIHTMLObjectResizer::eBottomRight, *parentContent);
NS_ENSURE_TRUE(mBottomRightHandle, NS_ERROR_FAILURE);
nsresult rv =
GetPositionAndDimensions(aResizedElement,
mResizedObjectX,
mResizedObjectY,
mResizedObjectWidth,
mResizedObjectHeight,
mResizedObjectBorderLeft,
mResizedObjectBorderTop,
mResizedObjectMarginLeft,
mResizedObjectMarginTop);
NS_ENSURE_SUCCESS(rv, rv);
// and let's set their absolute positions in the document
rv = SetAllResizersPosition();
NS_ENSURE_SUCCESS(rv, rv);
// now, let's create the resizing shadow
mResizingShadow = CreateShadow(*parentContent, aResizedElement);
NS_ENSURE_TRUE(mResizingShadow, NS_ERROR_FAILURE);
// and set its position
rv = SetShadowPosition(mResizingShadow, &aResizedElement,
mResizedObjectX, mResizedObjectY);
NS_ENSURE_SUCCESS(rv, rv);
// and then the resizing info tooltip
mResizingInfo = CreateResizingInfo(*parentContent);
NS_ENSURE_TRUE(mResizingInfo, NS_ERROR_FAILURE);
// and listen to the "resize" event on the window first, get the
// window from the document...
nsCOMPtr<nsIDocument> doc = GetDocument();
NS_ENSURE_TRUE(doc, NS_ERROR_NULL_POINTER);
nsCOMPtr<EventTarget> target = do_QueryInterface(doc->GetWindow());
if (!target) {
return NS_ERROR_NULL_POINTER;
}
mResizeEventListenerP = new DocumentResizeEventListener(*this);
rv = target->AddEventListener(NS_LITERAL_STRING("resize"),
mResizeEventListenerP, false);
if (NS_WARN_IF(NS_FAILED(rv))) {
return rv;
}
// XXX Even when it failed to add event listener, should we need to set
// _moz_resizing attribute?
aResizedElement.SetAttr(kNameSpaceID_None, nsGkAtoms::_moz_resizing,
NS_LITERAL_STRING("true"), true);
MOZ_ASSERT(mResizedObject == &aResizedElement);
mHasShownResizers = true;
return NS_OK;
}
NS_IMETHODIMP
HTMLEditor::HideResizers()
{
NS_ENSURE_TRUE(mResizedObject, NS_OK);
// get the presshell's document observer interface.
nsCOMPtr<nsIPresShell> ps = GetPresShell();
// We allow the pres shell to be null; when it is, we presume there
// are no document observers to notify, but we still want to
// UnbindFromTree.
NS_NAMED_LITERAL_STRING(mousedown, "mousedown");
RemoveListenerAndDeleteRef(mousedown, mEventListener, true,
Move(mTopLeftHandle), ps);
RemoveListenerAndDeleteRef(mousedown, mEventListener, true,
Move(mTopHandle), ps);
RemoveListenerAndDeleteRef(mousedown, mEventListener, true,
Move(mTopRightHandle), ps);
RemoveListenerAndDeleteRef(mousedown, mEventListener, true,
Move(mLeftHandle), ps);
RemoveListenerAndDeleteRef(mousedown, mEventListener, true,
Move(mRightHandle), ps);
RemoveListenerAndDeleteRef(mousedown, mEventListener, true,
Move(mBottomLeftHandle), ps);
RemoveListenerAndDeleteRef(mousedown, mEventListener, true,
Move(mBottomHandle), ps);
RemoveListenerAndDeleteRef(mousedown, mEventListener, true,
Move(mBottomRightHandle), ps);
RemoveListenerAndDeleteRef(mousedown, mEventListener, true,
Move(mResizingShadow), ps);
RemoveListenerAndDeleteRef(mousedown, mEventListener, true,
Move(mResizingInfo), ps);
if (mActivatedHandle) {
mActivatedHandle->UnsetAttr(kNameSpaceID_None, nsGkAtoms::_moz_activated,
true);
mActivatedHandle = nullptr;
}
// don't forget to remove the listeners !
// nsCOMPtr so we can do_QueryInterface into it.
nsCOMPtr<EventTarget> target = GetDOMEventTarget();
if (target && mMouseMotionListenerP) {
target->RemoveEventListener(NS_LITERAL_STRING("mousemove"),
mMouseMotionListenerP, true);
}
mMouseMotionListenerP = nullptr;
nsCOMPtr<nsIDocument> doc = GetDocument();
if (!doc) {
return NS_ERROR_NULL_POINTER;
}
target = do_QueryInterface(doc->GetWindow());
if (!target) {
return NS_ERROR_NULL_POINTER;
}
if (mResizeEventListenerP) {
target->RemoveEventListener(NS_LITERAL_STRING("resize"),
mResizeEventListenerP, false);
}
mResizeEventListenerP = nullptr;
mResizedObject->UnsetAttr(kNameSpaceID_None, nsGkAtoms::_moz_resizing, true);
mResizedObject = nullptr;
return NS_OK;
}
void
HTMLEditor::HideShadowAndInfo()
{
if (mResizingShadow) {
mResizingShadow->SetAttr(kNameSpaceID_None, nsGkAtoms::_class,
NS_LITERAL_STRING("hidden"), true);
}
if (mResizingInfo) {
mResizingInfo->SetAttr(kNameSpaceID_None, nsGkAtoms::_class,
NS_LITERAL_STRING("hidden"), true);
}
}
nsresult
HTMLEditor::StartResizing(Element* aHandle)
{
mIsResizing = true;
mActivatedHandle = 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;
mActivatedHandle->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;
}
EventTarget* 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;
}
nsresult
HTMLEditor::OnMouseDown(int32_t aClientX,
int32_t aClientY,
Element* aTarget,
Event* aEvent)
{
NS_ENSURE_ARG_POINTER(aTarget);
nsAutoString anonclass;
aTarget->GetAttribute(NS_LITERAL_STRING("_moz_anonclass"), anonclass);
if (anonclass.EqualsLiteral("mozResizer")) {
// If we have an anonymous element and that element is a resizer,
// let's start resizing!
aEvent->PreventDefault();
mResizerUsedCount++;
mOriginalX = aClientX;
mOriginalY = aClientY;
return StartResizing(aTarget);
}
if (anonclass.EqualsLiteral("mozGrabber")) {
// If we have an anonymous element and that element is a grabber,
// let's start moving the element!
mGrabberUsedCount++;
mOriginalX = aClientX;
mOriginalY = aClientY;
return GrabberClicked();
}
return NS_OK;
}
nsresult
HTMLEditor::OnMouseUp(int32_t aClientX,
int32_t aClientY,
Element* aTarget)
{
if (mIsResizing) {
// we are resizing and release the mouse button, so let's
// end the resizing process
mIsResizing = false;
HideShadowAndInfo();
SetFinalSize(aClientX, aClientY);
} else if (mIsMoving || mGrabberClicked) {
if (mIsMoving) {
mPositioningShadow->SetAttr(kNameSpaceID_None, nsGkAtoms::_class,
NS_LITERAL_STRING("hidden"), true);
SetFinalPosition(aClientX, aClientY);
}
if (mGrabberClicked) {
EndMoving();
}
}
return NS_OK;
}
void
HTMLEditor::SetResizeIncrements(int32_t aX,
int32_t aY,
int32_t aW,
int32_t aH,
bool aPreserveRatio)
{
mXIncrementFactor = aX;
mYIncrementFactor = aY;
mWidthIncrementFactor = aW;
mHeightIncrementFactor = aH;
mPreserveRatio = aPreserveRatio;
}
nsresult
HTMLEditor::SetResizingInfoPosition(int32_t aX,
int32_t aY,
int32_t aW,
int32_t aH)
{
// Determine the position of the resizing info box based upon the new
// position and size of the element (aX, aY, aW, aH), and which
// resizer is the "activated handle". For example, place the resizing
// info box at the bottom-right corner of the new element, if the element
// is being resized by the bottom-right resizer.
int32_t infoXPosition;
int32_t infoYPosition;
if (mActivatedHandle == mTopLeftHandle ||
mActivatedHandle == mLeftHandle ||
mActivatedHandle == mBottomLeftHandle) {
infoXPosition = aX;
} else if (mActivatedHandle == mTopHandle ||
mActivatedHandle == mBottomHandle) {
infoXPosition = aX + (aW / 2);
} else {
// should only occur when mActivatedHandle is one of the 3 right-side
// handles, but this is a reasonable default if it isn't any of them (?)
infoXPosition = aX + aW;
}
if (mActivatedHandle == mTopLeftHandle ||
mActivatedHandle == mTopHandle ||
mActivatedHandle == mTopRightHandle) {
infoYPosition = aY;
} else if (mActivatedHandle == mLeftHandle ||
mActivatedHandle == mRightHandle) {
infoYPosition = aY + (aH / 2);
} else {
// should only occur when mActivatedHandle is one of the 3 bottom-side
// handles, but this is a reasonable default if it isn't any of them (?)
infoYPosition = aY + aH;
}
// Offset info box by 20 so it's not directly under the mouse cursor.
const int mouseCursorOffset = 20;
mCSSEditUtils->SetCSSPropertyPixels(*mResizingInfo, *nsGkAtoms::left,
infoXPosition + mouseCursorOffset);
mCSSEditUtils->SetCSSPropertyPixels(*mResizingInfo, *nsGkAtoms::top,
infoYPosition + mouseCursorOffset);
nsCOMPtr<nsIContent> textInfo = mResizingInfo->GetFirstChild();
ErrorResult erv;
if (textInfo) {
mResizingInfo->RemoveChild(*textInfo, erv);
NS_ENSURE_TRUE(!erv.Failed(), erv.StealNSResult());
textInfo = nullptr;
}
nsAutoString widthStr, heightStr, diffWidthStr, diffHeightStr;
widthStr.AppendInt(aW);
heightStr.AppendInt(aH);
int32_t diffWidth = aW - mResizedObjectWidth;
int32_t diffHeight = aH - mResizedObjectHeight;
if (diffWidth > 0) {
diffWidthStr.Assign('+');
}
if (diffHeight > 0) {
diffHeightStr.Assign('+');
}
diffWidthStr.AppendInt(diffWidth);
diffHeightStr.AppendInt(diffHeight);
nsAutoString info(widthStr + NS_LITERAL_STRING(" x ") + heightStr +
NS_LITERAL_STRING(" (") + diffWidthStr +
NS_LITERAL_STRING(", ") + diffHeightStr +
NS_LITERAL_STRING(")"));
nsCOMPtr<nsIDocument> doc = GetDocument();
textInfo = doc->CreateTextNode(info);
if (NS_WARN_IF(!textInfo)) {
return NS_ERROR_FAILURE;
}
mResizingInfo->AppendChild(*textInfo, erv);
if (NS_WARN_IF(erv.Failed())) {
return erv.StealNSResult();
}
return mResizingInfo->UnsetAttr(kNameSpaceID_None, nsGkAtoms::_class, true);
}
nsresult
HTMLEditor::SetShadowPosition(Element* aShadow,
Element* aOriginalObject,
int32_t aOriginalObjectX,
int32_t aOriginalObjectY)
{
SetAnonymousElementPosition(aOriginalObjectX, aOriginalObjectY, aShadow);
if (HTMLEditUtils::IsImage(aOriginalObject)) {
nsAutoString imageSource;
aOriginalObject->GetAttr(kNameSpaceID_None, nsGkAtoms::src, imageSource);
nsresult rv = aShadow->SetAttr(kNameSpaceID_None, nsGkAtoms::src,
imageSource, true);
NS_ENSURE_SUCCESS(rv, rv);
}
return NS_OK;
}
int32_t
HTMLEditor::GetNewResizingIncrement(int32_t aX,
int32_t aY,
ResizeAt aResizeAt)
{
int32_t result = 0;
if (!mPreserveRatio) {
switch (aResizeAt) {
case ResizeAt::eX:
case ResizeAt::eWidth:
result = aX - mOriginalX;
break;
case ResizeAt::eY:
case ResizeAt::eHeight:
result = aY - mOriginalY;
break;
default:
MOZ_ASSERT_UNREACHABLE("Invalid resizing request");
}
return result;
}
int32_t xi = (aX - mOriginalX) * mWidthIncrementFactor;
int32_t yi = (aY - mOriginalY) * mHeightIncrementFactor;
float objectSizeRatio =
((float)mResizedObjectWidth) / ((float)mResizedObjectHeight);
result = (xi > yi) ? xi : yi;
switch (aResizeAt) {
case ResizeAt::eX:
case ResizeAt::eWidth:
if (result == yi)
result = (int32_t) (((float) result) * objectSizeRatio);
result = (int32_t) (((float) result) * mWidthIncrementFactor);
break;
case ResizeAt::eY:
case ResizeAt::eHeight:
if (result == xi)
result = (int32_t) (((float) result) / objectSizeRatio);
result = (int32_t) (((float) result) * mHeightIncrementFactor);
break;
}
return result;
}
int32_t
HTMLEditor::GetNewResizingX(int32_t aX,
int32_t aY)
{
int32_t resized =
mResizedObjectX +
GetNewResizingIncrement(aX, aY, ResizeAt::eX) * mXIncrementFactor;
int32_t max = mResizedObjectX + mResizedObjectWidth;
return std::min(resized, max);
}
int32_t
HTMLEditor::GetNewResizingY(int32_t aX,
int32_t aY)
{
int32_t resized =
mResizedObjectY +
GetNewResizingIncrement(aX, aY, ResizeAt::eY) * mYIncrementFactor;
int32_t max = mResizedObjectY + mResizedObjectHeight;
return std::min(resized, max);
}
int32_t
HTMLEditor::GetNewResizingWidth(int32_t aX,
int32_t aY)
{
int32_t resized =
mResizedObjectWidth +
GetNewResizingIncrement(aX, aY,
ResizeAt::eWidth) * mWidthIncrementFactor;
return std::max(resized, 1);
}
int32_t
HTMLEditor::GetNewResizingHeight(int32_t aX,
int32_t aY)
{
int32_t resized =
mResizedObjectHeight +
GetNewResizingIncrement(aX, aY,
ResizeAt::eHeight) * mHeightIncrementFactor;
return std::max(resized, 1);
}
nsresult
HTMLEditor::OnMouseMove(MouseEvent* aMouseEvent)
{
MOZ_ASSERT(aMouseEvent);
if (mIsResizing) {
// we are resizing and the mouse pointer's position has changed
// we have to resdisplay the shadow
int32_t clientX = aMouseEvent->ClientX();
int32_t clientY = aMouseEvent->ClientY();
int32_t newX = GetNewResizingX(clientX, clientY);
int32_t newY = GetNewResizingY(clientX, clientY);
int32_t newWidth = GetNewResizingWidth(clientX, clientY);
int32_t newHeight = GetNewResizingHeight(clientX, clientY);
mCSSEditUtils->SetCSSPropertyPixels(*mResizingShadow, *nsGkAtoms::left,
newX);
mCSSEditUtils->SetCSSPropertyPixels(*mResizingShadow, *nsGkAtoms::top,
newY);
mCSSEditUtils->SetCSSPropertyPixels(*mResizingShadow, *nsGkAtoms::width,
newWidth);
mCSSEditUtils->SetCSSPropertyPixels(*mResizingShadow, *nsGkAtoms::height,
newHeight);
return SetResizingInfoPosition(newX, newY, newWidth, newHeight);
}
if (mGrabberClicked) {
int32_t clientX = aMouseEvent->ClientX();
int32_t clientY = aMouseEvent->ClientY();
int32_t xThreshold =
LookAndFeel::GetInt(LookAndFeel::eIntID_DragThresholdX, 1);
int32_t yThreshold =
LookAndFeel::GetInt(LookAndFeel::eIntID_DragThresholdY, 1);
if (DeprecatedAbs(clientX - mOriginalX) * 2 >= xThreshold ||
DeprecatedAbs(clientY - mOriginalY) * 2 >= yThreshold) {
mGrabberClicked = false;
StartMoving();
}
}
if (mIsMoving) {
int32_t clientX = aMouseEvent->ClientX();
int32_t clientY = aMouseEvent->ClientY();
int32_t newX = mPositionedObjectX + clientX - mOriginalX;
int32_t newY = mPositionedObjectY + clientY - mOriginalY;
SnapToGrid(newX, newY);
mCSSEditUtils->SetCSSPropertyPixels(*mPositioningShadow, *nsGkAtoms::left,
newX);
mCSSEditUtils->SetCSSPropertyPixels(*mPositioningShadow, *nsGkAtoms::top,
newY);
}
return NS_OK;
}
void
HTMLEditor::SetFinalSize(int32_t aX,
int32_t aY)
{
if (!mResizedObject) {
// paranoia
return;
}
if (mActivatedHandle) {
mActivatedHandle->UnsetAttr(kNameSpaceID_None, nsGkAtoms::_moz_activated, true);
mActivatedHandle = nullptr;
}
// we have now to set the new width and height of the resized object
// we don't set the x and y position because we don't control that in
// a normal HTML layout
int32_t left = GetNewResizingX(aX, aY);
int32_t top = GetNewResizingY(aX, aY);
int32_t width = GetNewResizingWidth(aX, aY);
int32_t height = GetNewResizingHeight(aX, aY);
bool setWidth = !mResizedObjectIsAbsolutelyPositioned || (width != mResizedObjectWidth);
bool setHeight = !mResizedObjectIsAbsolutelyPositioned || (height != mResizedObjectHeight);
int32_t x, y;
x = left - ((mResizedObjectIsAbsolutelyPositioned) ? mResizedObjectBorderLeft+mResizedObjectMarginLeft : 0);
y = top - ((mResizedObjectIsAbsolutelyPositioned) ? mResizedObjectBorderTop+mResizedObjectMarginTop : 0);
// we want one transaction only from a user's point of view
AutoPlaceholderBatch batchIt(this);
if (mResizedObjectIsAbsolutelyPositioned) {
if (setHeight) {
mCSSEditUtils->SetCSSPropertyPixels(*mResizedObject, *nsGkAtoms::top, y);
}
if (setWidth) {
mCSSEditUtils->SetCSSPropertyPixels(*mResizedObject, *nsGkAtoms::left, x);
}
}
if (IsCSSEnabled() || mResizedObjectIsAbsolutelyPositioned) {
if (setWidth && mResizedObject->HasAttr(kNameSpaceID_None, nsGkAtoms::width)) {
RemoveAttributeWithTransaction(*mResizedObject, *nsGkAtoms::width);
}
if (setHeight && mResizedObject->HasAttr(kNameSpaceID_None,
nsGkAtoms::height)) {
RemoveAttributeWithTransaction(*mResizedObject, *nsGkAtoms::height);
}
if (setWidth) {
mCSSEditUtils->SetCSSPropertyPixels(*mResizedObject, *nsGkAtoms::width,
width);
}
if (setHeight) {
mCSSEditUtils->SetCSSPropertyPixels(*mResizedObject, *nsGkAtoms::height,
height);
}
} else {
// we use HTML size and remove all equivalent CSS properties
// we set the CSS width and height to remove it later,
// triggering an immediate reflow; otherwise, we have problems
// with asynchronous reflow
if (setWidth) {
mCSSEditUtils->SetCSSPropertyPixels(*mResizedObject, *nsGkAtoms::width,
width);
}
if (setHeight) {
mCSSEditUtils->SetCSSPropertyPixels(*mResizedObject, *nsGkAtoms::height,
height);
}
if (setWidth) {
nsAutoString w;
w.AppendInt(width);
SetAttributeWithTransaction(*mResizedObject, *nsGkAtoms::width, w);
}
if (setHeight) {
nsAutoString h;
h.AppendInt(height);
SetAttributeWithTransaction(*mResizedObject, *nsGkAtoms::height, h);
}
if (setWidth) {
mCSSEditUtils->RemoveCSSProperty(*mResizedObject, *nsGkAtoms::width,
EmptyString());
}
if (setHeight) {
mCSSEditUtils->RemoveCSSProperty(*mResizedObject, *nsGkAtoms::height,
EmptyString());
}
}
// keep track of that size
mResizedObjectWidth = width;
mResizedObjectHeight = height;
RefreshResizers();
}
NS_IMETHODIMP
HTMLEditor::GetResizedObject(Element** aResizedObject)
{
RefPtr<Element> ret = mResizedObject;
ret.forget(aResizedObject);
return NS_OK;
}
NS_IMETHODIMP
HTMLEditor::GetObjectResizingEnabled(bool* aIsObjectResizingEnabled)
{
*aIsObjectResizingEnabled = mIsObjectResizingEnabled;
return NS_OK;
}
NS_IMETHODIMP
HTMLEditor::SetObjectResizingEnabled(bool aObjectResizingEnabled)
{
mIsObjectResizingEnabled = aObjectResizingEnabled;
return NS_OK;
}
} // namespace mozilla
Reference in New Issue View Git Blame Copy Permalink