void
ImageDocument::RestoreImage()
{
if (!mImageContent) {
return;
}
// Keep image content alive while changing the attributes.
nsCOMPtr<Element> imageContent = mImageContent;
imageContent->UnsetAttr(kNameSpaceID_None, nsGkAtoms::width, true);
imageContent->UnsetAttr(kNameSpaceID_None, nsGkAtoms::height, true);
if (ImageIsOverflowing()) {
if (!mImageIsOverflowingVertically) {
SetModeClass(eOverflowingHorizontalOnly);
} else {
SetModeClass(eOverflowingVertical);
}
}
else {
SetModeClass(eNone);
}
mImageIsResized = false;
UpdateTitleAndCharset();
}
nsresult
ImageDocument::CheckOverflowing(bool changeState)
{
/* Create a scope so that the style context gets destroyed before we might
* call RebuildStyleData. Also, holding onto pointers to the
* presentation through style resolution is potentially dangerous.
*/
{
nsIPresShell *shell = GetShell();
if (!shell) {
return NS_OK;
}
nsPresContext *context = shell->GetPresContext();
nsRect visibleArea = context->GetVisibleArea();
mVisibleWidth = nsPresContext::AppUnitsToFloatCSSPixels(visibleArea.width);
mVisibleHeight = nsPresContext::AppUnitsToFloatCSSPixels(visibleArea.height);
}
bool imageWasOverflowing = ImageIsOverflowing();
bool imageWasOverflowingVertically = mImageIsOverflowingVertically;
mImageIsOverflowingHorizontally = mImageWidth > mVisibleWidth;
mImageIsOverflowingVertically = mImageHeight > mVisibleHeight;
bool windowBecameBigEnough = imageWasOverflowing && !ImageIsOverflowing();
bool verticalOverflowChanged =
mImageIsOverflowingVertically != imageWasOverflowingVertically;
if (changeState || mShouldResize || mFirstResize ||
windowBecameBigEnough || verticalOverflowChanged) {
if (ImageIsOverflowing() && (changeState || mShouldResize)) {
ShrinkToFit();
}
else if (mImageIsResized || mFirstResize || windowBecameBigEnough) {
RestoreImage();
} else if (!mImageIsResized && verticalOverflowChanged) {
if (mImageIsOverflowingVertically) {
SetModeClass(eOverflowingVertical);
} else {
SetModeClass(eOverflowingHorizontalOnly);
}
}
}
mFirstResize = false;
return NS_OK;
}
void
ImageDocument::ToggleImageSize()
{
mShouldResize = true;
if (mImageIsResized) {
mShouldResize = false;
ResetZoomLevel();
RestoreImage();
}
else if (ImageIsOverflowing()) {
ResetZoomLevel();
ShrinkToFit();
}
}
NS_IMETHODIMP
ImageDocument::HandleEvent(nsIDOMEvent* aEvent)
{
nsAutoString eventType;
aEvent->GetType(eventType);
if (eventType.EqualsLiteral("resize")) {
CheckOverflowing(false);
}
else if (eventType.EqualsLiteral("click") && mClickResizingEnabled) {
ResetZoomLevel();
mShouldResize = true;
if (mImageIsResized) {
int32_t x = 0, y = 0;
nsCOMPtr<nsIDOMMouseEvent> event(do_QueryInterface(aEvent));
if (event) {
event->GetClientX(&x);
event->GetClientY(&y);
int32_t left = 0, top = 0;
nsCOMPtr<nsIDOMHTMLElement> htmlElement =
do_QueryInterface(mImageContent);
htmlElement->GetOffsetLeft(&left);
htmlElement->GetOffsetTop(&top);
x -= left;
y -= top;
}
mShouldResize = false;
RestoreImageTo(x, y);
}
else if (ImageIsOverflowing()) {
ShrinkToFit();
}
} else if (eventType.EqualsLiteral("load")) {
UpdateSizeFromLayout();
}
return NS_OK;
}
NS_IMETHODIMP
ImageDocument::GetImageIsOverflowing(bool* aImageIsOverflowing)
{
*aImageIsOverflowing = ImageIsOverflowing();
return NS_OK;
}
