Accessible* XULTreeGridRowAccessible::ChildAtPoint(
int32_t aX, int32_t aY, EWhichChildAtPoint aWhichChild) {
nsIFrame* frame = GetFrame();
if (!frame) return nullptr;
nsPresContext* presContext = frame->PresContext();
PresShell* presShell = presContext->PresShell();
nsIFrame* rootFrame = presShell->GetRootFrame();
NS_ENSURE_TRUE(rootFrame, nullptr);
CSSIntRect rootRect = rootFrame->GetScreenRect();
int32_t clientX = presContext->DevPixelsToIntCSSPixels(aX) - rootRect.X();
int32_t clientY = presContext->DevPixelsToIntCSSPixels(aY) - rootRect.Y();
ErrorResult rv;
dom::TreeCellInfo cellInfo;
mTree->GetCellAt(clientX, clientY, cellInfo, rv);
// Return if we failed to find tree cell in the row for the given point.
if (cellInfo.mRow != mRow || !cellInfo.mCol) return nullptr;
return GetCellAccessible(cellInfo.mCol);
}
Accessible*
XULTreeGridRowAccessible::ChildAtPoint(int32_t aX, int32_t aY,
EWhichChildAtPoint aWhichChild)
{
nsIFrame *frame = GetFrame();
if (!frame)
return nullptr;
nsPresContext *presContext = frame->PresContext();
nsIPresShell* presShell = presContext->PresShell();
nsIFrame *rootFrame = presShell->GetRootFrame();
NS_ENSURE_TRUE(rootFrame, nullptr);
CSSIntRect rootRect = rootFrame->GetScreenRect();
int32_t clientX = presContext->DevPixelsToIntCSSPixels(aX) - rootRect.X();
int32_t clientY = presContext->DevPixelsToIntCSSPixels(aY) - rootRect.Y();
int32_t row = -1;
nsCOMPtr<nsITreeColumn> column;
nsAutoString childEltUnused;
mTree->GetCellAt(clientX, clientY, &row, getter_AddRefs(column),
childEltUnused);
// Return if we failed to find tree cell in the row for the given point.
if (row != mRow || !column)
return nullptr;
return GetCellAccessible(column);
}
Accessible*
XULTreeAccessible::ChildAtPoint(int32_t aX, int32_t aY,
EWhichChildAtPoint aWhichChild)
{
nsIFrame *frame = GetFrame();
if (!frame)
return nullptr;
nsPresContext *presContext = frame->PresContext();
nsIPresShell* presShell = presContext->PresShell();
nsIFrame *rootFrame = presShell->GetRootFrame();
NS_ENSURE_TRUE(rootFrame, nullptr);
CSSIntRect rootRect = rootFrame->GetScreenRect();
int32_t clientX = presContext->DevPixelsToIntCSSPixels(aX) - rootRect.X();
int32_t clientY = presContext->DevPixelsToIntCSSPixels(aY) - rootRect.Y();
int32_t row = -1;
nsCOMPtr<nsITreeColumn> column;
nsAutoString childEltUnused;
mTree->GetCellAt(clientX, clientY, &row, getter_AddRefs(column),
childEltUnused);
// If we failed to find tree cell for the given point then it might be
// tree columns.
if (row == -1 || !column)
return AccessibleWrap::ChildAtPoint(aX, aY, aWhichChild);
Accessible* child = GetTreeItemAccessible(row);
if (aWhichChild == eDeepestChild && child) {
// Look for accessible cell for the found item accessible.
RefPtr<XULTreeItemAccessibleBase> treeitem = do_QueryObject(child);
Accessible* cell = treeitem->GetCellAccessible(column);
if (cell)
child = cell;
}
return child;
}
nsresult
nsBaseDragService::DrawDrag(nsIDOMNode* aDOMNode,
nsIScriptableRegion* aRegion,
CSSIntPoint aScreenPosition,
LayoutDeviceIntRect* aScreenDragRect,
RefPtr<SourceSurface>* aSurface,
nsPresContext** aPresContext)
{
*aSurface = nullptr;
*aPresContext = nullptr;
// use a default size, in case of an error.
aScreenDragRect->SetRect(aScreenPosition.x - mImageOffset.x,
aScreenPosition.y - mImageOffset.y,
1, 1);
// if a drag image was specified, use that, otherwise, use the source node
nsCOMPtr<nsIDOMNode> dragNode = mImage ? mImage.get() : aDOMNode;
// get the presshell for the node being dragged. If the drag image is not in
// a document or has no frame, get the presshell from the source drag node
nsIPresShell* presShell = GetPresShellForContent(dragNode);
if (!presShell && mImage)
presShell = GetPresShellForContent(aDOMNode);
if (!presShell)
return NS_ERROR_FAILURE;
*aPresContext = presShell->GetPresContext();
nsCOMPtr<nsIFrameLoaderOwner> flo = do_QueryInterface(dragNode);
if (flo) {
RefPtr<nsFrameLoader> fl = flo->GetFrameLoader();
if (fl) {
auto* tp = static_cast<mozilla::dom::TabParent*>(fl->GetRemoteBrowser());
if (tp && tp->TakeDragVisualization(*aSurface, aScreenDragRect)) {
if (mImage) {
// Just clear the surface if chrome has overridden it with an image.
*aSurface = nullptr;
}
return NS_OK;
}
}
}
// convert mouse position to dev pixels of the prescontext
CSSIntPoint screenPosition(aScreenPosition);
screenPosition.x -= mImageOffset.x;
screenPosition.y -= mImageOffset.y;
LayoutDeviceIntPoint screenPoint = ConvertToUnscaledDevPixels(*aPresContext, screenPosition);
aScreenDragRect->MoveTo(screenPoint.x, screenPoint.y);
// check if drag images are disabled
bool enableDragImages = Preferences::GetBool(DRAGIMAGES_PREF, true);
// didn't want an image, so just set the screen rectangle to the frame size
if (!enableDragImages || !mHasImage) {
// if a region was specified, set the screen rectangle to the area that
// the region occupies
CSSIntRect dragRect;
if (aRegion) {
// the region's coordinates are relative to the root frame
int32_t dragRectX, dragRectY, dragRectW, dragRectH;
aRegion->GetBoundingBox(&dragRectX, &dragRectY, &dragRectW, &dragRectH);
dragRect.SetRect(dragRectX, dragRectY, dragRectW, dragRectH);
nsIFrame* rootFrame = presShell->GetRootFrame();
CSSIntRect screenRect = rootFrame->GetScreenRect();
dragRect.MoveBy(screenRect.TopLeft());
}
else {
// otherwise, there was no region so just set the rectangle to
// the size of the primary frame of the content.
nsCOMPtr<nsIContent> content = do_QueryInterface(dragNode);
nsIFrame* frame = content->GetPrimaryFrame();
if (frame) {
dragRect = frame->GetScreenRect();
}
}
nsIntRect dragRectDev =
ToAppUnits(dragRect, nsPresContext::AppUnitsPerCSSPixel()).
ToOutsidePixels((*aPresContext)->AppUnitsPerDevPixel());
aScreenDragRect->SizeTo(dragRectDev.Width(), dragRectDev.Height());
return NS_OK;
}
// draw the image for selections
if (mSelection) {
LayoutDeviceIntPoint pnt(aScreenDragRect->TopLeft());
*aSurface = presShell->RenderSelection(mSelection, pnt, aScreenDragRect,
mImage ? 0 : nsIPresShell::RENDER_AUTO_SCALE);
return NS_OK;
}
// if a custom image was specified, check if it is an image node and draw
// using the source rather than the displayed image. But if mImage isn't
// an image or canvas, fall through to RenderNode below.
if (mImage) {
nsCOMPtr<nsIContent> content = do_QueryInterface(dragNode);
HTMLCanvasElement *canvas = HTMLCanvasElement::FromContentOrNull(content);
if (canvas) {
return DrawDragForImage(*aPresContext, nullptr, canvas, aScreenDragRect, aSurface);
}
nsCOMPtr<nsIImageLoadingContent> imageLoader = do_QueryInterface(dragNode);
// for image nodes, create the drag image from the actual image data
if (imageLoader) {
return DrawDragForImage(*aPresContext, imageLoader, nullptr, aScreenDragRect, aSurface);
}
// If the image is a popup, use that as the image. This allows custom drag
// images that can change during the drag, but means that any platform
// default image handling won't occur.
// XXXndeakin this should be chrome-only
nsIFrame* frame = content->GetPrimaryFrame();
if (frame && frame->IsMenuPopupFrame()) {
mDragPopup = content;
}
}
if (!mDragPopup) {
// otherwise, just draw the node
nsIntRegion clipRegion;
uint32_t renderFlags = mImage ? 0 : nsIPresShell::RENDER_AUTO_SCALE;
if (aRegion) {
aRegion->GetRegion(&clipRegion);
}
if (renderFlags) {
nsCOMPtr<nsINode> dragINode = do_QueryInterface(dragNode);
// check if the dragged node itself is an img element
if (dragINode->NodeName().LowerCaseEqualsLiteral("img")) {
renderFlags = renderFlags | nsIPresShell::RENDER_IS_IMAGE;
} else {
nsINodeList* childList = dragINode->ChildNodes();
uint32_t length = childList->Length();
// check every childnode for being an img element
// XXXbz why don't we need to check descendants recursively?
for (uint32_t count = 0; count < length; ++count) {
if (childList->Item(count)->NodeName().LowerCaseEqualsLiteral("img")) {
// if the dragnode contains an image, set RENDER_IS_IMAGE flag
renderFlags = renderFlags | nsIPresShell::RENDER_IS_IMAGE;
break;
}
}
}
}
LayoutDeviceIntPoint pnt(aScreenDragRect->TopLeft());
*aSurface = presShell->RenderNode(dragNode, aRegion ? &clipRegion : nullptr,
pnt, aScreenDragRect,
renderFlags);
}
// If an image was specified, reset the position from the offset that was supplied.
if (mImage) {
aScreenDragRect->MoveTo(screenPoint.x, screenPoint.y);
}
return NS_OK;
}
